JP4264275B2 - Processing method of dry squeezing and ironing can - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a processed can body using drawing and ironing, and relates to a method for processing a dry drawing ironing can that performs drawing and ironing on a side wall of a container in a dry environment.
[0002]
[Prior art]
Conventionally, processed cans subjected to drawing and ironing have been widely used in beverage containers because low-cost mass production is easy. As a method of manufacturing this processing can, from the viewpoint of ensuring workability, a plate to be processed such as a tin-plated steel plate or an aluminum plate (aluminum plate) is used, and the above-described processing is performed while applying a lubricant to the surface. The method is common. At this time, in order to prevent external rust and secure internal corrosion resistance, it is necessary to coat and coat the surface of the processed plate after ironing and forming, so each processed can is washed with water using a detergent such as alkali. There has been a problem that the lubricant adhering to the processing canister must be removed after molding through low-productivity processes such as removal, chemical conversion treatment, and painting.
[0003]
As a method for improving productivity by omitting such a low production process, as disclosed in Patent Document 1, a method of performing a laminating process such as resin coating on the surface of a processed plate, or a can in advance before processing A method has been proposed in which the outer surface equivalent surface is coated with a resin-based paint, and the inner surface corresponding to the inner surface of the can is laminated with a resin coating or the like.
At that time, for example, when applying a resin-based paint, it is necessary to omit alkali washing of the lubricant, and for that purpose, when performing so-called dry squeezing and ironing process in which an inner wax is contained in the resin-based paint was there.
[0004]
[Patent Document 1]
JP-A-10-46101
[0005]
[Problems to be solved by the invention]
However, the dry squeezing and ironing can processing method described above has the following problems.
For example, by producing a large number of processed cans, a large amount of metal powder remains in the inner peripheral portion of the through hole of the die to be processed, so that the bottom portion of the container formed from the workpiece plate is placed in the through hole of the die. When manufacturing a processed can by pushing it through, the metal powder may fall and adhere to the side wall of the container passing through the through hole. For this reason, even when the alkali cleaning of the lubricant is omitted due to the inclusion of the inner wax, the processing can may be forced to be cleaned in order to remove the attached metal powder. Accordingly, it is necessary to carry out unnecessary waste water treatment after the squeezing and squeezing process performed in a dry environment, which is not economical and cannot receive the benefits of the dry method that should be originally enjoyed.
It is also possible to periodically clean the inner periphery of the through-hole before the amount of metal powder attached to the inner periphery of the through-hole increases so that the metal powder does not fall on the side wall of the container. However, in this case, it is necessary to temporarily stop the manufacturing of the processed can, so that the manufacturing efficiency of the processed can is lowered and the workability is poor.
The present invention has been made in view of such circumstances, and in the dry environment, a dry drawing that can efficiently produce a working can that suppresses and further prevents the adhesion of metal powder generated during drawing and ironing. It aims at providing the processing method of a ironing can.
[0006]
[Means for Solving the Problems]
In the dry drawing and ironing can processing method according to the first aspect of the present invention, a die having a through hole and a punch that can be inserted with a small gap in the through hole are used in a dry environment. In the processing method of the drawn and ironed processing can, the processed plate body is manufactured by pushing the processed plate into the through hole by the punch and passing through the punch.
The wiping means provided on the punch removes deposits on the inner periphery of the through hole.
As a result, for example, when the side wall of the processing can body in the manufacturing process is squeezed or squeezed, the deposits attached to the inner periphery of the through hole of the die are removed by the wiping means provided on the punch. it can.
[0007]
The processing method of the dry squeezing and ironing can according to the second invention in accordance with the above object is the processing method of the dry squeezing and ironing can according to the first invention. After passing through the through hole, the process is continued.
In this way, after the processed can body in the manufacturing process passes through the through-hole of the die, the deposit around the through-hole is continuously removed by the wiping means. It can be easily removed without providing it.
The dry drawing and ironing can processing method according to the third invention in accordance with the above object is the dry drawing and ironing can processing method according to the first and second inventions, wherein the wiping means is provided around the punch. The protruding wiping portion is brought into contact with the inner peripheral portion of the through hole.
In this way, the wiping portion of the wiping means protrudes around the punch and contacts the inner peripheral portion of the through hole, so that every time the punch passes through the through hole of the die, the deposit on the inner peripheral portion of the through hole is wiped off. It becomes possible to wipe off with a part.
[0008]
The processing method of the dry squeezing and ironing can according to the fourth invention according to the above object is the processing method of the dry squeezing and ironing can according to the third invention, wherein the deposit removed by the wiping portion is the wiping means. Is recovered in the recess of the punch provided in the vicinity of the base.
Thus, since the deposit is collected in the recess of the punch, the deposit removed by the wiping portion can be prevented from adhering to the inner peripheral portion of the processing can body or the through hole.
The processing method of the dry squeezing and ironing can according to the fifth invention according to the above object is the processing method of the dry squeezing and ironing can according to the third and fourth inventions, wherein a part or all of the deposits are It collect | recovers through the collection | recovery groove provided in the die | dye and opened with respect to the said through-hole.
In this way, because the collected matter is collected by the collection groove that is provided in the die and opened with respect to the through hole, for example, the deposited matter that is sandwiched between the wiping portion and the inner peripheral portion, Can be removed reliably.
[0009]
The processing method of the dry squeezing and ironing can according to the sixth invention according to the above object is the processing method of the dry squeezing and ironing can according to the fifth invention. Is done.
In this way, the collection operation is easy because the suction means communicating with the collection groove is used to collect the deposit.
According to a seventh aspect of the present invention, there is provided a dry drawing and ironing can processing method according to the third to sixth inventions, wherein at least the wiping part is an elastically deformable flexible material. It consists of
Here, the elastically deformable soft material is preferably made of, for example, resin, rubber, or the like.
Thereby, the wiping part can move along an inner peripheral part, without being influenced by the shape of the inner peripheral part of a through-hole.
[0010]
According to the eighth aspect of the present invention, there is provided a dry drawing and ironing can processing method according to the first to seventh inventions, wherein the cleaning means provided on the base side of the punch Then, the wiping means is washed, and the water adhering to the wiping means after washing is removed by the drying means.
Thus, since the wiping means is cleaned by the cleaning means, the deposits attached to the wiping means can be easily removed from the wiping means. Moreover, since the water | moisture content adhering to the wiping means after washing | cleaning is removed by a drying means, a process can main body can be manufactured in a dry type environment.
[0011]
According to a ninth aspect of the present invention, there is provided a dry drawing and ironing can processing method according to the first to eighth inventions, wherein the work plate is a steel plate or an aluminum plate. .
In this way, a processed can body can be manufactured from a material that is easy to process.
According to a tenth aspect of the present invention, there is provided a dry drawing and ironing can processing method according to the ninth invention, wherein the surface of the work plate is pre-coated with a resin coating. ing.
Here, as the resin to be coated on the surface of the processed plate, for example, a resin such as polyester, polyethylene, or polycarbonate can be used, and this can be used as a film, or a lubricant can be mixed into the resin-based paint. Things can be used.
In this way, since the processed plate pre-coated with resin is used, there is no need to paint coat the surface of the processed can body after manufacturing.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIGS. 1 (A) and 1 (B) are explanatory views of the processing method of the dry drawn ironing can according to the first embodiment of the present invention, and FIGS. 2 (A), (B) and (C) are FIG. 3 is an explanatory diagram of a processing method of a dry-type squeezing and ironing can according to the second embodiment of the present invention, FIG. 3 is an explanatory diagram of a collecting groove of a die to which the processing method of the processing can is applied, FIG. B) is an explanatory view of a wiping means cleaning and drying method applied to the processing method of the processed can, FIG. 5 is an explanatory view of a cupping process, and FIG. 6 is an explanatory view of a drawing ironing process.
[0013]
As shown in FIGS. 1, 5, and 6, the dry squeezing and ironing can processing method according to the first embodiment of the present invention is charged with, for example, a beverage such as beer in a dry environment. The method includes a cupping process, a drawing and ironing process, a painting process, and a printing process.
Hereinafter, after describing the cupping processing device 11 used in the cupping processing step and the drawing and ironing processing device 12 used in the drawing and ironing processing step, a processing method of the processing can body 10 will be described.
[0014]
As shown in FIG. 5, the cupping apparatus 11 includes a cylindrical punching die 14 on which a steel plate (an example of a processed plate) 13 can be placed, and a cylindrical punching that can be fitted into the punching die 14. Punch 15 for use.
An outer blade (not shown) is provided on the inner peripheral portion of the upper end (one end) of the punching die 14, and the plate holding portion 16 having an inner diameter substantially the same as the inner diameter of the punching die 14 is provided above the punching die 14. The steel plate 13 can be fixed by the die 14 for punching and the plate pressing portion 16.
The punching punch 15 includes a cylindrical upper punching portion 17 and a cylindrical lower punching portion 18 having an inner diameter substantially the same as the inner diameter of the upper punching portion 17. Yes. An inner blade is provided on the outer peripheral portion of the lower end of the upper punching portion 17, and a circular plate 19 (also referred to as a blank) is punched from the steel plate 13. A plurality of support members 20 are provided at the lower peripheral portion of the lower punching portion 18, and lifting means (not shown) such as jacks are provided at the lower ends of the plurality of support members 20. The punching punch portion 18 is configured to be movable up and down.
[0015]
A cupping punch 21 disposed substantially on the same axis as the upper punching portion 17 is provided in the upper punching portion 17 so as to be movable up and down with respect to the punching die 14. . The cupping punch 21 can be disposed inside the lower punching portion 18 so as to be movable up and down on substantially the same axis as the lower punching portion 18.
With this configuration, after the steel plate 13 is arranged on the punching die 14 and the steel plate 13 is fixed by the plate pressing portion 16, the upper punching portion 17 is lowered and the lower punching portion 18 is raised. Then, the steel plate 13 is sandwiched between punches 15 for punching. Next, the disc 19 can be punched from the steel plate 13 by lowering the punch 15 for punching with respect to the punching die 14. After the disc 19 is punched, the cupping punch 21 is lowered with respect to the punching die 14, and the peripheral portion of the disc 19 sandwiched between the punching punches 15 is moved to the upper punching portion 17. And the container 22 is manufactured by gradually pulling out from between the punching portion 18 for lower punching.
[0016]
Next, the drawing ironing device 12 will be described.
As shown in FIG. 6, the drawing ironing apparatus 12 includes a drawing die 23 and three dies for ironing 24 to 26, a drawing die 23, and each ironing dies 24 to 26. 26 has punches 32 that can be inserted through the through holes 28 to 31 provided in the respective holes 26 with a slight gap, and a can bottom die 33.
[0017]
The drawing die 23 has a narrow gap (for example, 0.18 to 0.2 mm) between the drawing die 23 and the punch 32, and the side wall portion of the container 22 is formed by drawing (redrawing). 38 is squeezed and a predetermined inner diameter is obtained. The three ironing dies 24 to 26 have a small gap (for example, 0.07 to 0.18 mm) between the ironing dies 24 to 26 and the punch 32. It gradually becomes smaller from the upstream ironing die 24 to the downstream ironing die 26, and the side wall of the container formed by the drawing die 23 is ironed (steering) to form a side wall. This adjusts the height and thickness.
[0018]
The through holes 28 to 31 of the drawing die 23 and the ironing dies 24 to 26 are reduced in diameter toward the center in the thickness direction of the drawing die 23 and the ironing dies 24 to 26. Further, in order to facilitate the explanation, in the inner peripheral portions 34 to 37 of the respective through holes 28 to 31, as shown in FIG. 1, the entrance side (base side) of the punch 32 is defined with reference to the most reduced diameter portion. The a part and the opposite side (front side) are b part.
Each shape of the front-end | tip part of the punch 32 and the die | dye 33 for can bottoms is a shape corresponding to the can bottom shape of the processing can main body 10 to manufacture. The can bottom die 33 has a narrow gap between the bottom die 33 and the tip of the punch 32 (for example, 0.18 to 0.2 mm). After passing the through holes 28 to 31 of the processing dies 24 to 26, the processed can main body 10 is formed by pressing the bottom of the processing dies 24 to 26 against the can bottom die 33 with the punch 32.
[0019]
As shown in FIGS. 1 (A) and 1 (B), two wiping means 39 and 40 are provided on the front side of the punch 32 where the side wall 38 of the container 22 is not in contact. The wiping means 39 and 40 are provided in two grooves 41 and 42 formed at different positions in the longitudinal direction of the punch 32 and around the punch 32, respectively. The wiping means 39 and 40 are each made of a resin that is an example of a flexible material that can be elastically deformed.
Each of the wiping means 39 and 40 has a substantially container shape, and a base portion of a side wall portion serving as the wiping portions 45 and 46 is integrally provided on the bottom portions 43 and 44 attached to the groove portions 41 and 42 of the punch 32. In addition, the diameter of the wiping portions 45 and 46 from the base portion to the tip portion is increased and the thickness is reduced. Moreover, the diameter of the bottom parts 43 and 44 is smaller than the minimum inner diameter D1 of each through-hole 28-31, and the diameter of the front part of the wiping parts 45 and 46 is larger than the minimum inner diameter D1 of each through-hole 28-31. And since it is smaller than the largest internal diameter D2 of each through-hole 28-31, the front part of the wiping parts 45 and 46 can contact the inner peripheral parts 34-37 of each through-hole 28-31.
[0020]
The wiping means 39 and 40 provided in the groove portions 41 and 42 are fixed in a state where the tip portions of the wiping portions 45 and 46 are opposed to each other. Here, the attachment of each wiping means 39, 40 to each groove 41, 42 can be changed depending on the material of each wiping means 39, 40. For example, in the case of resin, each wiping means formed in a plate shape is used for each wiping means 39, 40. It can be attached in the state shown in FIG. 1 by winding around the groove portions 41 and 42 and connecting both end portions of the wiping means 39 and 40. In the case of rubber, for example, an opening is provided in the bottom in advance, and the tip of the punch 32 is passed through the opening and fitted into the grooves 41 and 42 to be attached to the grooves 41 and 42. Is possible.
[0021]
Thereby, as shown in FIG. 1 (A), when the processed can body 10 is manufactured by the punch 32, the outer surface of the wiping unit 45 of the wiping means 39 disposed on the front side of the punch 32 is Since it moves along the a part of the inner peripheral parts 34 to 37 of the through holes 28 to 31, the removal of the metal powder (an example of a deposit) by the wiping means 39 is not performed. However, since the tip of the wiping portion 46 of the wiping means 40 arranged on the base side of the punch 32 moves along the a portion of each inner peripheral portion 34 to 37, the metal powder in this portion is removed. .
[0022]
On the other hand, as shown in FIG. 1B, when the manufacture of the processing can body 10 by the punch 32 is completed and the punch 32 returns to the original position, the wiping means disposed on the base side of the punch 32 Since the outer surface of the wiping part 46 of 40 moves along b part of the inner peripheral parts 34-37 of each through-holes 28-31, the removal of metal powder by this wiping means 40 is not performed. However, since the tip of the wiping portion 45 of the wiping means 39 arranged on the tip side of the punch 32 moves along the b portion of the inner peripheral portions 34 to 37 of the through holes 28 to 31, the metal of this portion Powder removal is performed.
Thus, the metal powder adhering to the inner peripheral portions 34 to 37 of the through holes 28 to 31 can be removed together with the reciprocating movement of the punch 32. In addition, a part or all of the removed metal powder is in the vicinity of the base of each wiping means 39, 40 within each groove 41, 42 of the punch 32 (for example, the inner surface of the bottom 43, 44 of each wiping means 39, 40). From 5 cm to 5 cm) is dropped and collected in the recesses 47 and 48 located inside the wiping portions 45 and 46, and the state of being attached to the inside of each wiping portion 45 and 46 is maintained.
[0023]
Therefore, the container 22 manufactured in the cupping process is attached to the tip end of the punch 32, and then the drawing die 23 is drawn with a predetermined load (for example, 0.1 to 0.3 ton). , The side wall 38 of the container 22 is squeezed, and the side walls 38 of the container 22 are squeezed by passing through the respective ironing dies 24 to 26 and further pressed against the can bottom die 33. The bottom of the can is then molded. Thereby, the processing can main body 10 is manufactured.
[0024]
Subsequently, a processing method of the dry drawn ironing can according to the first embodiment of the present invention will be described with reference to FIGS. 1, 5, and 6.
First, in the cupping process, as shown in FIG. 5, a steel sheet having a thickness of, for example, 0.15 to 0.25 mm and having a polyester-based sheet previously attached thereto (that is, a resin coating is applied). 13 is placed on the upper end of the punching die 14 of the cupping processing apparatus 11 and fixed by the plate pressing portion 16 to prevent the position of the steel plate 13 from the punching die 14.
[0025]
Next, the punching punch 15 is actuated on the steel sheet 13 sandwiched between the punching die 14 and the plate pressing portion 16, and the upper punching portion 17 and the lower punching portion 18 for punching are used. The steel plate 13 is sandwiched.
Then, the punching punch 15 is lowered with respect to the punching die 14 to punch the disc 19 from the steel plate 13. Subsequently, the cup 22 is lowered with respect to the punching die 14 and the peripheral portion of the disc 19 sandwiched between the punches 15 is gradually pulled out, so that the container 22 (for example, an inner diameter of 70 to 100 mm) is obtained. , 15 to 50 mm in height).
[0026]
Next, in the drawing and ironing process, as shown in FIG. 6, after attaching the opening 49 side of the container 22 to the tip of the punch 32, the bottom of the container-shaped steel plate (container 22) is subjected to a predetermined load. (For example, 0.1 to 0.3 tons) The pressing die 23 is pressed and passed through the through hole 28 to squeeze the side wall 38 of the container 22 and have a predetermined inner diameter (for example, 50 to 70 mm). Mold the container.
At this time, the tip of the wiping portion 46 of the wiping means 40 disposed on the base side of the punch 32 moves along the a portion of the inner peripheral portion 34 and adheres to the a portion of the inner peripheral portion 34 of the through hole 28. The removed metal powder is removed, and the metal powder is collected in the recess 48 of the punch 32 or is attached to the inside of the wiping portion 46.
[0027]
The container 50 that has passed through the through hole 28 of the drawing die 23 is passed through the bottom of each of the ironing dies 24 to 26 by pressing against the through holes 29 to 31, and the height of the side wall 51. The sheath thickness is adjusted. At this time, the tip of the wiping portion 46 of the wiping means 40 disposed on the base side of the punch 32 moves along the a portion of each inner peripheral portion 35 to 37, and the inner peripheral portion of each through hole 29 to 31. The metal powder adhering to the a part of 35 to 37 is removed, and the metal powder is collected in the concave portion 48 of the punch 32 or the state of adhering to the inside of the wiping part 46 is maintained.
Further, the container that has passed through the through-hole 31 of the ironing die 26 arranged on the most downstream side is pressed against the can bottom die 33 to form (mold) the can bottom, and the processed can body 10 is manufactured. Is done.
[0028]
After the manufactured processed can body 10 is removed from the tip of the punch 32, the punch 32 returns to the original position. At this time, the tip of the wiping part 45 of the wiping means 39 disposed on the tip side of the punch 32 is The metal powder moves along the b portion of the inner peripheral portions 34 to 37 of the through holes 28 to 31, and the metal powder adhered to the b portion of the inner peripheral portions 34 to 37 of the through holes 28 to 31 is removed. The state in which the metal powder is collected in the concave portion 47 of the punch 32 or adhered to the inside of the wiping portion 45 is maintained.
As described above, the removal of the metal powder is continuously performed after the processed can body 10 to be manufactured passes through each of the through holes 28 to 31, so that the inner peripheral portions 34 to 37 of the respective through holes 28 to 31 are cleaned. There is no need to provide a separate process, and the production efficiency of the processed can body 10 can be increased.
[0029]
The manufactured processed can body 10 is transported to the painting process, and after the paint is sprayed uniformly on the inner surface of the processed can body 10 as necessary, baking is performed by a heating device. Thereby, the corrosion of the processing can main body 10 by the contents is prevented.
And in a printing process, the design according to the content is given to the outer surface of the processed work main body.
Note that the upper end of the processed can body processed in the printing process has a flange necessary for necking the aperture of the processed can body smaller than the can diameter and double-tightening the lid attached to the opening. After performing the flange processing for mounting, after filling the contents, the lid is attached.
[0030]
Next, a processing method of the dry drawn ironing can according to the second embodiment of the present invention will be described. What is the above-described processing method of the dry drawn ironing can according to the first embodiment of the present invention? Since only the wiping means, punches, and dies used are different in configuration, these will be described, and detailed descriptions of other parts will be omitted.
As shown in FIGS. 2 (B), 4 (A), and 4 (B), a wiping means 56 is provided at a portion where the side wall 38 of the container 22 does not contact on the front side of the punch 55 of the drawing and ironing apparatus. It has been. The wiping means 56 is made of a resin that is an example of an elastically deformable soft material, and is provided in a groove 57 formed around the punch 55.
[0031]
The wiping means 56 includes a wiping portion 58 in which the central portion in the thickness direction of the wiping means 56 protrudes around the punch 55. As shown in FIG. 2A, the diameter of the wiping means 56 on both sides in the thickness direction is the minimum inner diameter D3 of each of the through holes 63 to 66 provided in the drawing die 59 and the ironing dies 60 to 62, respectively. Since the diameter of the tip of the wiping part 58 is larger than the minimum inner diameter D3 of each through hole 63 to 66 and smaller than the maximum inner diameter D4 of each through hole 63 to 66, the wiping part The 58 corners can contact the inner peripheral portions 67 to 70 of the through holes 63 to 66.
Here, the attachment of the wiping means 56 to the groove portion 57 can be changed depending on the material of the wiping means 56. For example, in the case of resin, the wiping means formed in a plate shape is wound around the groove portion 57 and both end portions thereof are wound. Can be attached in the state shown in FIG. 2 (B). In the case of rubber, for example, an opening is provided in the thickness direction of the wiping means in advance, the tip of the punch 55 is passed through this opening, and the groove is inserted into the groove 57, so that attachment to the groove 57 is possible. Become.
[0032]
As shown in FIGS. 2 (A), (B), (C) and FIG. 3, the drawing die 59 and the ironing dies 60 to 62 are collected with respect to the through holes 63 to 66. Grooves 71 to 74 are provided. The collection grooves 71 to 74 are provided inside the one end in the thickness direction of the drawing die 59 and each ironing die 60 to 62 so as to surround the through holes 63 to 66, and a vacuum pump is provided in a part thereof. (An example of suction means) Since the collection paths 76 to 79 communicating with 75 communicate with each other, the metal powder can be easily collected. A plurality of recovery grooves may be provided in each processing die.
As shown in FIGS. 4A and 4B, a punch accommodating portion 80 is provided on the base side of the punch 55 serving as a standby position for the punch 55, and in the vicinity of the punch inlet / outlet 81 in the punch accommodating portion 80, drying is performed. A cleaning means 83 is provided on the base side of the punch 55 in the punch accommodating portion 80.
[0033]
The cleaning means 83 is disposed so as to surround the periphery of the punch 55 and includes a large number of nozzles 84 capable of ejecting cleaning water to the periphery of the punch 55. Therefore, the wiping means after the processing can body 10 is manufactured. 56 can be easily washed. In addition, although it is preferable to use water as washing water, it is also possible to mix detergent etc. as needed. The washed waste water is sucked and discharged through a drain pipe 85 provided at the lower part of the punch accommodating portion 80.
The drying means 82 is also disposed so as to surround the periphery of the punch 55 and includes a plurality of nozzles 86 capable of ejecting air to the periphery of the punch 55, so that moisture adhered to the punch 55 and the wiping means 56 Can be easily removed. Although the moisture adhering to the punch 55 and the wiping means 56 can be removed by the air force ejected from the nozzle 86, hot air is ejected from the nozzle 86 to remove the moisture adhering to the punch 55 and the wiping means 56. It is also possible to do.
[0034]
Thereby, when manufacturing the process can main body 10 with the punch 55, as shown to FIG. 2 (A), the metal powder 87 adhering to a part of each inner peripheral part 67-70 is shown in FIG. As shown in B), the front corner of the wiping portion 58 of the wiping means 56 can be moved along the a portion of the inner peripheral portions 67 to 70 to be attached to the front side of the wiping portion 58 and removed. . Further, as shown in FIG. 2A, the metal powder 88 attached to the b portion of the inner peripheral portions 67 to 70 of the through holes 63 to 66 is removed from the wiping means 56 as shown in FIG. By moving the base corner of the wiping part 58 along the b part of the inner peripheral parts 67 to 70, the wiping part 58 is attached to the tip of the wiping part 56 and carried to the vicinity of the collecting grooves 71 to 74. As shown in 2 (C), it can be removed through the recovery grooves 71 to 74. The metal powder 88 adhering to the b portion of the inner peripheral portions 67 to 70 of the through holes 63 to 66 can also be removed in the process in which the punch 55 returns to the punch accommodating portion 80.
[0035]
After manufacturing the processed can body 10, the punch 55 is pulled back into the punch accommodating portion 80 and washed with the washing water from the nozzle 84 of the washing means 83, so that the metal powder adhering to the punch 55 and the wiping means 56 is removed. Easy to remove.
In order to manufacture the processed can body 10 again, the punch 55 is protruded from the punch inlet / outlet 81 of the punch accommodating portion 80 and air is blown out from the nozzle 86 of the drying means 82 to remove moisture adhering to the surface of the punch 55. By doing so, it is possible to prevent moisture from being discharged to the processing step of the processing tube main body 10 and to sufficiently obtain the merit performed in a dry environment.
[0036]
As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included. For example, a case where the processing method of the dry drawing ironing can of the present invention is configured by combining some or all of the above-described embodiments and modifications is also included in the scope of the right of the present invention.
In the above embodiment, the case where the wiping means is provided in the punch of the drawing ironing apparatus has been described. However, the wiping means is provided in the punching punch of the cupping processing apparatus, and the inner periphery of the punching die of the cupping processing apparatus is provided. It is also possible to remove the deposits not attached to the part.
[0037]
And in the said embodiment, although the case where the collection groove | channel was provided in all of the drawing die and each ironing die which are the dies of a drawing ironing apparatus was demonstrated, one of them, two, or It is also possible to provide recovery grooves in three units. Note that the number of ironing dies may be one, or two or a plurality of four or more.
Furthermore, in the said embodiment, the case where the cupping process and the drawing ironing process were performed to the resin-coated steel plate was demonstrated. However, it is also possible to perform a cupping process and a drawing ironing process on a steel sheet that is not coated with resin, and it is also possible to apply a resin coating after manufacturing the processed can body. It is also possible to use a resin-coated aluminum plate or a resin-coated aluminum plate without using a resin-coated steel plate.
[0038]
【The invention's effect】
In the processing method of the dry-type squeezing and ironing can according to claim 1 to 10, for example, it occurs when the side wall portion of the processing can body in the manufacturing process is squeezed or squeezed, and the inner periphery of the through hole of the die is generated. The attached deposits can be removed by wiping means provided on the punch. As a result, metal powder can be prevented from dropping and adhering to the side wall of the container passing through the through-hole, and further prevented, so that the machined can body can be manufactured without performing the cleaning operation on the machined can, and the dry environment You can get the full benefits of the following. Further, since the wiping means is provided on the punch, the deposits on the inner peripheral portion of the through hole can be removed without manual intervention, and the workability is good.
In particular, in the processing method of the dry drawn ironing can according to claim 2, after the processed can body in the manufacturing process passes through the through hole of the die, the wiping means continuously removes the deposits around the through hole. Therefore, for example, the work can be easily removed without newly providing work time for removing the deposits, the manufacturing efficiency of the processed can body can be improved, and workability is also good.
[0039]
In the processing method of the dry drawing ironing can according to claim 3, since the wiping portion of the wiping means protrudes around the punch and contacts the inner peripheral portion of the through hole, each time the punch passes through the through hole of the die. It becomes possible to wipe off the deposits on the inner peripheral portion of the through hole with the wiping portion. Thereby, since the adhesion amount of the deposit | attachment to the inner peripheral part of a through-hole can be reduced as much as possible, the processing can main body which suppressed the adhesion of the deposit | attachment and also prevented it can be manufactured efficiently.
In the processing method of the dry-type squeezing and ironing can according to claim 4, since the deposit is collected in the concave portion of the punch, the deposit removed by the wiping portion adheres to the inner periphery of the workpiece can and the through hole. Can be prevented, and the removal work of the deposit can be performed efficiently.
[0040]
In the processing method of the dry squeezing and ironing can according to claim 5, the collected matter is collected by the collection groove provided in the die and opened to the through hole. For example, between the wiping portion and the inner peripheral portion The adhered matter sandwiched between the two can be reliably removed, and the removal work of the adhered matter is easy.
In the processing method of the dry squeezing and ironing can according to the sixth aspect, the suction means communicating with the recovery groove is used for recovering the deposit, so that the workability at the time of recovery is good.
[0041]
In the processing method of the dry drawn ironing can according to claim 7, since at least the wiping portion is made of a flexible material that can be elastically deformed, the wiping portion is not affected by the shape of the inner peripheral portion of the through hole. It can move along the shape of the inner periphery. Thereby, the quantity of the deposit | attachment adhering to the inner peripheral part of a through-hole can further be reduced.
In the processing method of the dry-type squeezing and ironing can according to claim 8, the wiping means is washed by the washing means, so that the deposits adhering to the wiping means can be easily removed from the wiping means, and the workability is good.
Moreover, since the water | moisture content adhering to the wiping means after washing | cleaning is removed by a drying means, a process can main body can be manufactured in a dry environment, and the merit performed in a dry environment can fully be acquired.
[0042]
In the processing method of the dry drawn ironing can according to claim 9, since the processed plate is a steel plate or an aluminum plate, the processed can body can be manufactured from a material with easy workability, and workability at the time of manufacture is good. is there.
In the processing method of the dry drawn ironing can according to claim 10, since the processed plate pre-coated with resin is used, there is no need to paint-coat the surface of the processed can body after manufacturing. The productivity is good and the productivity can be increased.
[Brief description of the drawings]
FIGS. 1A and 1B are explanatory diagrams of a processing method of a dry-type squeezing and ironing can according to a first embodiment of the present invention.
FIGS. 2A, 2B, and 2C are explanatory views of a method for processing a dry drawn ironing can according to a second embodiment of the present invention.
FIG. 3 is an explanatory view of a collecting groove of a die to which the processing method of the processing can is applied.
FIGS. 4A and 4B are explanatory views of a wiping means cleaning and drying method applied to the processing method of the processing can. FIG.
FIG. 5 is an explanatory diagram of a cupping process.
FIG. 6 is an explanatory diagram of a drawing ironing process.
[Explanation of symbols]
10: Processing can body, 11: Cupping processing device, 12: Drawing ironing device, 13: Steel plate (working plate), 14: Die for punching, 15: Punch for punching, 16: Plate pressing part, 17: Upper punching Punch part for punching, 18: punching part for lower punching, 19: disc, 20: support member, 21: punch for cupping, 22: container, 23: die for drawing, 24-26: die for ironing, 27: Dies, 28-31: Through-hole, 32: Punch, 33: Die for can bottom, 34-37: Inner peripheral part, 38: Side wall part, 39, 40: Wiping means, 41, 42: Groove part, 43, 44: Bottom, 45, 46: Wiping part, 47, 48: Recessed part, 49: Opening part, 50: Container, 51: Side wall part, 55: Punch, 56: Wiping means, 57: Groove part, 58: Wiping part, 59: Drawing Processing dies, 60-62: Die for slicing, 63 to 66: through hole, 67 to 70: inner peripheral part, 71 to 74: recovery groove, 75: vacuum pump (suction means), 76 to 79: recovery path, 80: punch accommodating part, 81: Punch entrance / exit, 82: Drying means, 83: Cleaning means, 84: Nozzle, 85: Drain pipe, 86: Nozzle, 87, 88: Metal powder

Claims (10)

Using a die having a through hole and a punch that can be inserted with a small gap in the through hole, the processed plate is pushed and passed through the through hole by the punch in a dry environment. A processing method of a drawn and ironed can that produces
A dry squeezing and ironing can processing method, characterized in that deposits on the inner periphery of the through hole are removed by wiping means provided on the punch. 2. The dry drawn and ironed can according to claim 1, wherein the removal of the deposit is continued after the processed can body to be manufactured passes through the through hole. Processing method. The dry squeezing and ironing can processing method according to claim 1, wherein a wiping portion provided in the wiping means and protruding around the punch is brought into contact with an inner peripheral portion of the through hole. A method of processing a dry drawn ironing can characterized by the above. 4. The dry drawn ironing can processing method according to claim 3, wherein the deposits removed by the wiping unit are collected in a recess of the punch provided near the base of the wiping means. Processing method of dry squeezing and ironing can. 5. The dry drawing and ironing can processing method according to claim 3, wherein a part or all of the adhering matter is passed through a collection groove provided in the die and opened to the through hole. A method of processing a dry drawn ironing can, characterized by 6. The processing method for a dry drawn ironing can according to claim 5, wherein the deposit is collected by a suction means communicating with the collecting groove. 7. The dry drawn ironing can according to claim 3, wherein at least the wiping portion is made of an elastically deformable flexible material. Processing method. In the processing method of the dry drawing ironing can of any one of Claims 1-7, the said wiping means is wash | cleaned by the washing | cleaning means provided in the base side of the said punch, and also in the said wiping means after washing | cleaning A processing method for a dry-type squeezing and ironing can characterized by removing adhering moisture by a drying means. The method for processing a dry drawn ironing can according to any one of claims 1 to 8, wherein the plate to be processed is a steel plate or an aluminum plate. 10. The processing method for a dry drawn ironing can according to claim 9, wherein the surface of the plate to be processed is preliminarily coated with a resin.

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