JP2001009547A - Can body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely position a portion to be processed into a recessed part and a projecting part at a position corresponding to a molding means, even if contaminant or dusts are adhered to a can barrel by forming two or more marks for positioning a pattern printed on a peripheral face of the can barrel at a given position, on a peripheral face of the can barrel. SOLUTION: A CAN pattern (letters) 15 is printed on the peripheral face of a can barrel 11 of a can body 10. A recessed part 16 is molded on the can barrel 11 at least at one part of CAN under the condition that it is aligned with the pattern 15. In order to apply mold processing while the pattern 15 is matched with the recessed part 16, a molding means for applying the projecting part 16 requires to be accurately aligned against the pattern 15. A positioning mark 17 is required for alignment, and has two marks of a stopping mark 17a and a checking mark 17b, both of which are formed on the same perimeter of the can barrel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a can body having a pattern printed on an outer peripheral surface of a can body, and a concave portion and / or a convex portion formed on at least a part of the pattern in alignment with the pattern. The present invention relates to a can body having a positioning mark formed on an outer peripheral surface of a can body for securely aligning a pattern with a concave portion and / or a convex portion.

[0002]

2. Description of the Related Art In recent years, a can body having a concave and / or convex portion formed on a can body has been developed and commercialized for reasons such as a variety of designs and an improvement in the strength of the can body accompanying a reduction in the thickness of the can body. Is being transformed. In this case, if the concave portions and / or the convex portions are processed in accordance with the patterns, characters, and the like printed on the can body (in the present specification, these are collectively referred to as patterns), the design of the can body can be improved. Because of the increase, at least a part of the pattern is subjected to processing of a concave portion and / or a convex portion that matches the pattern.

[0003] As a prior art for processing such a concave portion and / or a convex portion on a can body, International Publication WO98 / 032.
79 `` TOOLING AND METHOD THE EMBOSSING OF A CONT
AINER AND THE RESULTING CONTAINER "or W
O97 / 21505 “METHOD OF ORIENTING CANS” is known. In these prior arts, a positioning mark indicating the position of the pattern portion is formed on the can body in order to align a forming means for processing a concave portion and / or a convex portion on the pattern portion of the can body, and this mark is detected by a sensor. After reading, the rotation of the can body is controlled so that the pattern comes to a position corresponding to the molding means.

[0004]

Although these prior arts are excellent inventions, there is room for improvement from the viewpoint of practical application. That is, in the manufacturing process of the can, the can body may become dirty or dust may adhere thereto. In such a case, the sensor may mistakenly recognize the dirt as the positioning mark. Further, in a can body having a metal can body such as a three-piece can, the sensor may erroneously recognize the welded portion as a positioning mark.

[0005] As described above, when the molding means processes the concave and / or convex portions in a state where the dirt on the can body, the adhered dust or the welded portion is erroneously recognized as the positioning mark, the pattern portion and the concave and / or convex portion are processed. The projections are displaced, and the commercial value of the can is lost.

The present invention has been made in view of the above circumstances, and is intended to process concave and / or convex portions even when dirt or dust adheres to the can body or even when the can body has a welded portion. It is an object of the present invention to provide a can body which can reliably position a pattern portion to be subjected to a molding process at a position corresponding to a molding means.

[0007]

According to a first aspect of the present invention, a pattern is printed on an outer peripheral surface of a can body, and at least a part of the pattern is aligned with the pattern. A can body for processing a concave portion and / or a convex portion, wherein two or more positioning marks for positioning the pattern at a predetermined position are formed on an outer peripheral surface of the can body. In this way, by using two or more positioning marks and positioning the pattern at a position corresponding to the molding means only when two or more marks are accurately detected by the sensor, the concave and / or convex portions can be formed. Processing can be performed in a state where the pattern completely matches the pattern portion.

According to a second aspect of the present invention, the can body is formed of a metal welded can body, a pattern is printed on the outer peripheral surface of the can body, and at least a part of the pattern is aligned with the pattern. A concave body and / or a convex body to be processed, wherein one positioning mark for positioning the pattern at a predetermined position is formed on the outer peripheral surface of the can body, and the positioning mark is It is configured to be longer than the welding width of the can body. As described above, if the positioning mark is longer than the welding portion, the welding portion is not erroneously recognized as the positioning mark.

According to a third aspect of the present invention, at least one of the two or more positioning marks in the first aspect is arranged so that the rotating can body is oriented in a predetermined direction. It is a positioning stop mark for stopping, and at least one other positioning mark is a positioning confirmation mark for checking whether or not the pattern is oriented in a predetermined direction when the can body stops. . As described above, when two or more positioning marks are used as the positioning stop mark and the positioning confirmation mark, the direction of the pattern can be checked before and after the rotation of the can body is stopped, so that the pattern, the concave portion and the /
Alternatively, alignment of the projections can be performed.

[0010] The positioning confirmation mark can confirm whether the pattern is oriented in a predetermined direction before or after processing the concave and / or convex portions of the pattern. Therefore, in the invention according to claim 4, the positioning confirmation mark confirms whether or not the pattern is oriented in a predetermined direction before processing the concave portion and / or the convex portion on the can body. In the invention according to claim 5, the positioning confirmation mark confirms whether or not the pattern is oriented in a predetermined direction after processing the concave and / or convex portions on the can body. I am trying to do it.

The method of forming two positioning marks can also be applied to a can body having a can body welded. Therefore, in claim 6, the can body is constituted by a metal welded can body.
In this case, if the positioning stop mark is longer than the width of the welded portion, it is possible to prevent the welded portion from being erroneously recognized as the positioning stop mark. There is.

[0012] The invention according to claim 8 is the can, wherein the outer periphery of the can body is covered with a polyester film or an organic coating, wherein the positioning mark is printed inside the polyester film or the organic coating. It has a configuration formed as follows. As described above, when the can body is covered with the polyester film or the organic coating, the forming means does not directly contact the metal portion of the can body when the unevenness is processed, and the metal portion is not damaged.

In particular, when the pattern is printed on the back surface of the film (the side in contact with the outer peripheral surface of the metal can body), the pattern is not damaged because the molding means does not directly contact the ink. When the can is covered with a polyester film or an organic film, the same effect can be obtained even when the pattern is printed on the outer peripheral surface of the can body.

The positioning mark can be formed in various modes. Therefore, a ninth aspect of the present invention is configured such that the positioning mark is formed separately from the pattern, and a tenth aspect of the present invention is configured to use a part of the pattern as the positioning mark. If a part of the pattern is used as a positioning mark, it is not necessary to separately form the mark, so that the design of the can is improved.

As a mode of forming the positioning mark, the positioning stop mark may be formed longer in the circumferential direction of the can body than the positioning confirmation mark. Alternatively, as in the invention according to claim 12, the positioning stop mark and the positioning confirmation stop mark may be formed on the same circumference of the can body, and further, as in the invention according to claim 13, The positioning stop mark and the positioning confirmation stop mark may be formed at different positions in the height direction of the can body.
Here, if the positioning stop mark is formed to be longer than the positioning confirmation mark, the two marks can be distinguished by judging the length of the mark, so that there is no erroneous recognition of the two marks. Further, when the check mark is shortened, the mark is deviated from the monitoring area of the sensor even if the position is slightly displaced, and it can be seen that the position is displaced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A can according to an embodiment of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1A is a perspective view of a can according to a first embodiment of the present invention. The can body 10 shown in FIG.
It is a three-piece can composed of a can body 11, a can lid 12, and a can bottom 13. The can body 11 is made of a thin metal plate and has a cylindrical shape by welding both ends. Reference numeral 14 denotes the welded portion. In the present invention, the welded portion 14 includes a portion which is actually welded and a portion on both sides of which no printing is performed. The outer peripheral surface of the can body 11 has “CA
The pattern (character) 15 of "N" is printed. This pattern 1
5 is printed on the outer peripheral surface of the can body and then covered with a polyester film or an organic coating, but can be printed on the back surface (the side in contact with the outer peripheral surface of the can body) of the polyester film or the organic coating. .

The can body 11 is formed with a recess 16 "CAN" in alignment with the pattern 15. As shown in FIG. 1 (b), the recess 16 has a gentle slope at the edge so as to prevent the can body itself or the pattern 15 from being damaged by forming the recess.

The form in which the pattern 15 and the recess 16 are made to coincide with each other is not limited to the form in which the entire pattern and the entire recess are made to coincide with each other. "A" for "CAN"
Only the concave part is processed, and the concave part “CAN” “A”
There is also a mode in which printing is performed only on the printing.

The shape of the pattern 15 may be not only the shape of the concave part but also the shape of the convex part or the mixture of the concave part and the convex part. and so on. Furthermore, as shown in FIG. 2, a mode in which only the edge portion of the pattern 15 is formed in the concave portion 16, a mode in which only the edge portion is formed in the convex portion, and a mode in which the convex portion and the concave portion are mixed are conceivable. .

In such various modes, the pattern 15 and the recess 16 are formed.
In order to perform the forming process while making the patterns coincide with each other, it is necessary to accurately align the forming means for forming the concave portion 16 with the pattern 15. What is necessary for this alignment is a positioning mark 17. In the present embodiment, the positioning mark 1
7 is a stop mark (positioning stop mark) 17a
And a confirmation mark (positioning confirmation mark) 17b, and the stop mark 17a
And a confirmation mark 17b are formed on the same circumference of the can body.

In this case, the stop mark 17a is
It is longer than the width of 4. When the stop mark 17a is longer than the welded portion 14 and the confirmation mark 17b, the sensor described later allows the stop mark 17a to be confirmed only when a length equal to or longer than a predetermined length is detected. Can be prevented from being erroneously recognized as the stop mark 17a. The check mark 17b is formed shorter than the stop mark 17a. When the check mark 17b is shortened, the detection accuracy of the displacement can be improved.

Stop mark 17a and confirmation mark 17b
May be formed on the same circumference of the can body as in this embodiment, or may be formed at different positions in the height direction of the can body as shown in FIG.

Next, the concave portion 16 in the can of this embodiment
Will be described. FIG. 4 is a schematic front view showing the relationship between an inner roller, an outer roller, and a cam member in a molding device for forming a concave portion. FIG. 5 is a diagram showing an embodiment of an apparatus corresponding to the AA arrow of FIG. It is a partial cutting main part side view.

In FIG. 5, reference numeral 110 denotes a rotating shaft, and its left and right ends are rotatably supported by frames 111 and 112. One end (right end in FIG. 5) is engaged with a driving means (not shown) to rotate the rotating shaft 110. Drive gear 113
Is fixed. Reference numeral 114 denotes a fixed gear, which is concentrically fixed to the rotating shaft 110 on a left frame 111 in FIG.

Reference numeral 115 denotes a first rotating member which is concentrically fixed to the rotating shaft 110, and has, on its peripheral edge, an inner roller shaft 101a and an outer roller shaft 102a having an inner roller 101 and an outer roller 102 at the right ends, respectively. Multiple sets are supported to make The inner roller shaft 101a and the outer roller shaft 102a are positioned such that the inner roller shaft 101a is located closer to the center and the outer roller shaft 102a is separated by a predetermined distance (the radius of the inner roller 101 and the outer roller 102 on the same radiation in the first rotating member 115). They are juxtaposed outward at a distance (a distance equal to the radius of the large diameter portion described later). An inner roller gear 116 meshing with the fixed gear 114 is fixed to the left end of the inner roller shaft 101a, and an outer roller gear 118 meshing with the intermediate gear 117 fixed to the inner roller shaft 101a is fixed to the left end of the outer roller shaft 102a. is there. As a result, the pair of inner roller shafts 1
01a and the outer roller shaft 102a are rotated by power from the same drive system, and their rotations are always synchronized under a fixed relationship.

A pattern (CAN) is formed on the outer peripheral surface of the inner roller 101 fixed to the right end of the inner roller shaft 101a.
Are formed. On the other hand, the outer roller 1 fixed to the right end of the outer roller shaft 102a
The reference numeral 02 denotes a cam having a large diameter portion on one half and a small diameter portion on the other half, and a convex portion having the same shape (CAN) as the concave portion of the inner roller 101 is formed on the large diameter portion. ,
These forming concave and convex portions form a pair of forming molds (forming means).

In FIG. 5, reference numeral 119 denotes a second rotating member.
The first rotating member 115 is fixed to the rotating shaft 10 integrally. A portion of the peripheral surface of the second rotating member 119 which is located on the right side of the inner roller 101 has a can body holding means 1.
20 are provided. The can body holding means 120 includes a slide body 122 that slides along a slide guide 121 formed on the second rotating member 119, and a slide body 12.
A rocking body 125 is provided on a support 123 fixed to 2 so as to be swingable about a shaft 124, a can bottom chuck 126 rotatably supported on the left side of the rocking body 125, and the chuck 126 is rotated. Stepping motor 129
And the roller supporting member 12 protruding from the left side of the rocking body 125.
Roller 12 that is rotatably mounted on 7a
7 and a cam roller 128 mounted on the right side of the rocking body 125. Note that a servo motor can be used instead of the stepping motor 129.

In FIG. 5, reference numeral 130 denotes a fixed member, which is located on the right side of the second rotating
12 fixed. A cam groove 131 is formed on the peripheral side surface of the fixing member 130. The range from the cam groove 131 in FIG. 4 is closer to the inner roller 101 (the inner roller 11 is located on the can body 11 on the can body mounting roller 127). In a range other than the above, a position apart from the inner roller 101 (from the can body 11 on the can body mounting roller 127 to the inner roller 10).
1). A cam groove 131 is formed at a portion connecting the position near the inner roller 101 and the position distant from the inner roller 101 along a locus corresponding to the movement of the can body.

Numeral 132 denotes a connecting member. A cam roller 133 rotatably engaged with the cam groove 131 is attached to the right end, and a left portion is fixed to the slide body 122. Therefore, when the trajectory of the cam groove 131 changes, the connecting body 132 also moves left and right accordingly.

Reference numeral 140 denotes a cam member, which is disposed outside the inner roller 101 over a range slightly wider than the range as shown in FIG. This cam member 14
The position 0 is the oscillating body 125 when the oscillating body 125 is moved to the left by the cam groove 131 and the inner roller 101 is inserted into the can body 11 on the can body mounting roller 127.
Are arranged at the same position as the position of the cam roller 128.

The cam member 140 pushes the cam roller 28 in a range from the position shown in FIG. 1 to swing the rocking body 125 about the shaft 124 in the direction of the rotating shaft 110. Thereby, the can body wall on the side in contact with the outer roller 102 is pressed against the inner roller 101. The basic structure of the molding apparatus up to this point is the same as the technique disclosed in Japanese Patent Application Laid-Open No. 9-192763 filed by the present applicant.

Reference numerals 151 and 152 denote sensors which detect the positioning marks 17 formed on the can body. here,
The sensor 151 for detecting the stop mark is arranged at the position shown in FIG. 4, and the sensor 152 for detecting the confirmation mark is arranged at the position shown in FIG.

The molding apparatus having such a configuration operates as follows. When the rotating shaft 110 is rotated by the rotation of the driving gear 113, the first rotating member 115 and the second rotating member 119 are rotated.
Also rotate. Thereby, the can body (can bottom is attached) 1 sent from the pre-processing step (not shown) to the molding apparatus.
1 is held by the chuck 126 and transported to the position shown in FIG. Here, the sensor 151 detects the stop mark 17a, and rotates the can body 11 by the servo motor 129 so that the pattern 15 is directed to a predetermined position (a position corresponding to the concave and convex portions of the mold). Next, at the position (1), the sensor 152 detects the confirmation mark on the can body 11 to determine whether the pattern is facing a predetermined position.

The rotation control of the servo motor 129 based on the detection signal from the sensor 151, the confirmation of the pattern position based on the detection signal from the sensor 152, and the stop mark 17a based on the detection signal from both the sensors 151 and 152. And whether the check mark 17b is a normal mark (whether the mark 17b is not dirty) is performed by a control unit (not shown).

On the other hand, when the rotating shaft 110 rotates, the inner roller gear 116 meshing with the fixed gear 114 acts as a planetary gear to rotate (revolve), and the inner roller 101 rotates.
And the outer roller 102 is rotated via the intermediate gear 117 and the outer roller gear 118. Here, the fixed gear 114 and the inner roller gear 116
Has a gear ratio of 4: 1.
6 rotates once when it makes a quarter turn along the fixed gear 114.
The gear ratio between the intermediate gear 117 and the outer roller gear 118 is 1: 2. When the intermediate gear 117, that is, the inner roller 101 makes one rotation, the outer roller 102 makes a half rotation in synchronization with the inner roller 101.

When the second rotating member 119 rotates, the cam roller 133 and the connecting member 132 move to the left according to the locus of the cam groove 131 formed in the fixed member 130,
The slide body 122 moves to the left along the slide guide 121, and moves the can body 11 on the can body placing roller 127 toward the inner roller 101. At this time, the center of the inner roller 101 and the center of the can body 11 are substantially aligned, and the outer roller 102 has a small diameter portion facing the inner roller 101, so that the movement of the can body 11 is not hindered at all. The inner roller 101 is inserted into the can body 11 without being removed (the position shown in FIG. 1).

Next, when the first rotating member 115 rotates to the position shown in FIG. 4, the cam roller 128 is pushed by the cam member 140, and the oscillating body 125 is
24, so that the side wall surface of the can body facing the outer roller 102 is
Press

In this state, when the first rotating member 115 further rotates, the large-diameter portion having the forming protrusion formed by the rotation of the outer roller 102 rotates toward the side facing the inner roller 101, and the can body 11 is moved. Inner roller 101
4 and a large diameter portion of the outer roller 102 (FIG. 4).
Position). When the first rotating member 115 further rotates by 90 degrees with the can body 11 sandwiched therebetween and the can body 11 moves to the position shown in FIG. 4, the inner roller 101 rotates once.
The outer roller 102 rotates by a half rotation, and forms a concave portion on the outer peripheral surface of the can body 11 which is aligned with the pattern.

The can body 11 having the pattern formed in the concave portion is
When it revolves to the position shown in FIG. 4, the pressing of the cam roller 28 by the cam member 40 is released. As a result, the swinging body 125 swings in a direction in which the can body 11 is separated from the inner roller 102.

Next, when the can body 11 revolves to the position shown in FIG. 4 by the rotation of the second rotating member 119, the inner roller 101 of the cam groove 131 formed in the fixing member 130 is formed.
The cam roller 133, the slide body 122, and the oscillating body 125 move to the right according to the trajectory in the direction away from the
The inner roller 101 comes out of the position 1. In this way, in the can body 10 of the first embodiment, the concave portion is processed in the pattern portion.

In this embodiment, the confirmation mark 17 is used.
The example in which the pattern is directed to a predetermined position by using b before the concave portion is formed has been described.However, after the concave portion is formed, the pattern is directed to a predetermined position. That is, it can be confirmed whether the position of the pattern 15 and the position of the concave portion 16 match. In this case, the sensor 152 is placed at or in FIG.

[Second Embodiment] FIG. 6 is a perspective view of a can according to a second embodiment of the present invention. In this embodiment, a part of the pattern is used as a positioning mark. More specifically, the underline part, which is a part of the pattern 15, is used as the stop mark 17a and the confirmation mark 17b. According to this embodiment, the positioning marks 17 (17a, 17a) are provided.
Since b) is melted into the pattern 15, the positioning mark 17 does not impair the design. In addition,
As a mode in which a part of the pattern is used as the positioning mark 17,
Various forms are possible without being limited to the present embodiment.

[Third Embodiment] FIG. 7 is a perspective view of a can according to a third embodiment of the present invention. In the present embodiment, a so-called 2 including a bottomed can body 11 and a can lid 12 is provided.
Applied to piece cans. In the case of a two-piece can, since there is no weld, the weld is not misidentified as a positioning mark. Therefore, the positioning mark 17 including the stop mark 17a and the confirmation mark 17b can be formed small.

Although the first to third embodiments of the can body of the present invention have been described, the present invention is not limited to these embodiments. For example, in a three-piece can body, in the case where the pattern and the concave and / or convex portions are slightly misaligned, use only the stop mark as the positioning mark and omit the confirmation mark. Can also. That is, only one positioning mark can be used.

The modifications described in the first embodiment can of course be applied to the second and third embodiments and other embodiments.

[0046]

According to the can body of the present invention having the above-mentioned structure, even if the can body has dirt or dust adhered thereto, or even if the can body has a welded portion, the recess and / or The pattern portion to be processed with the convex portion can be reliably positioned at a position corresponding to the molding means.

[Brief description of the drawings]

FIG. 1A is a perspective view of a can according to a first embodiment of the present invention, and FIG. 1B is an enlarged sectional view of a concave portion.

FIG. 2 is a perspective view showing a modification of the can according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing another modified example of the can according to the first embodiment of the present invention.

FIG. 4 is a schematic front view of the apparatus showing the relationship among an inner roller, an outer roller, and a cam member in an apparatus that forms a can body in a state in which the pattern matches the pattern.

FIG. 5 is a side view of a main part of a device corresponding to a view taken in the direction of arrow AA in FIG. 4;

FIG. 6 is a perspective view of a can according to a second embodiment of the present invention.

FIG. 7 is a perspective view of a can according to a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 can body 11 can body 14 welded part 15 pattern 16 recess 17 positioning mark 17a stop mark 17b confirmation mark

Claims (13)

[Claims] 1. A can body on which a pattern is printed on an outer peripheral surface of a can body and at least a part of the pattern is subjected to processing of a concave portion and / or a convex portion in alignment with the pattern. A can body characterized in that two or more positioning marks for positioning at a predetermined position are formed on the outer peripheral surface of the can body. 2. A can body comprises a metal welded can body, a pattern is printed on the outer peripheral surface of the can body, and at least a part of the pattern is aligned with the pattern to form a concave portion and / or a convex portion. In the can body subjected to the processing of, forming one positioning mark for positioning the pattern at a predetermined position, this positioning mark on the outer peripheral surface of the can body, longer than the welding width of the can body A can body characterized by being formed. 3. The two or more positioning marks,
At least one positioning mark is a positioning stop mark for stopping the rotating can body so that the pattern is oriented in a predetermined direction, and at least one other positioning mark has the can body stopped. 2. The can according to claim 1, wherein the can is a positioning confirmation mark for confirming whether or not the pattern is oriented in a predetermined direction. 4. The positioning confirmation mark is for confirming whether or not the pattern is oriented in a predetermined direction before processing a concave portion and / or a convex portion on the can body. Item 4. A can according to Item 3. 5. The positioning confirmation mark is for confirming whether or not the pattern is oriented in a predetermined direction after processing the concave and / or convex portions on the can body. Item 4. A can according to Item 3. 6. The can body according to claim 3, wherein the can body comprises a metal welded can body. 7. The can body according to claim 6, wherein the positioning stop mark is formed longer than a welding width of the can body. 8. The can body, wherein the outer peripheral surface of the can body is covered with a polyester film or an organic coating, and the positioning mark is formed by printing the positioning mark inside the polyester film or the organic coating. A can according to any one of claims 1 to 8. 9. The can according to claim 1, wherein the positioning mark is formed separately from the pattern. 10. The can according to claim 1, wherein a part of the pattern is used as the positioning mark. 11. The can body according to claim 3, wherein the positioning stop mark is formed longer in the circumferential direction of the can body than the positioning confirmation mark. 12. The can body according to claim 3, wherein the positioning stop mark and the positioning confirmation stop mark are formed on the same circumference of the can body. 13. The can body according to claim 3, wherein the positioning stop mark and the positioning confirmation stop mark are formed at different positions in the height direction of the can body.