JPS62134127A - Manufacture of neck-in can - Google Patents

Abstract

PURPOSE:To smoothly manufacture a can by forming a bead of a specified shape in a divided position, bringing a divided side end part of a can drum to neck-in working, and obtaining a separate can drum having no wrinkle nor elastic return, when obtaining plural pieces of titled cans by dividing a long cylinder can drum. CONSTITUTION:A score 37 is formed in a position which becomes the boundary line of two pieces of can drums 20 of a blank 38 of a plural piece portion of the can drums, for instance, a two piece portion. Subsequently, a cylinder drum 8 is formed by making round this blank 38 and joining both the ends by welding, etc. Next, the whole periphery bead 42 is formed by performing the bead working projected to the inside along the score 37. Thereafter, the can drum 8 is cut along the score 37 by placing a cutter against it from the outside, and a separate can drum 20 which has been drawn to the inside so that the end part becomes a shape on the way of neck-in, and has a shape fitted well to a neck-in device. When this end part is brought to neck-in working, and a cover is wound and clamped to its end part, a neck-in can is smoothly obtained. In this regard, a formation of the bead 42 and the cutting are executed by a can drum dividing device for a neck-in can.

Description

Detailed Description of the Invention (a) Purpose of the Invention [Industrial Use] This invention relates to a method for manufacturing a neck-in can used for manufacturing a neck-in can, which is a type of can for packaging beverages, etc. It is.

[Prior Art] A neck-in can is a can with one or both ends narrowed down, and is used for reasons such as saving on the inside and lid material.

Conventionally, in order to make a general can fy7, as shown in Fig. 10, first, a long cylinder-like cylinder - λπ20 was divided into ljl.
to form a cylindrical Hibarate upper #body 102, and then its #9
νl: Part 103 was filled with D104. Can 1B was recently divided! At 102, it is desirable that the end 103 has a shape similar to a flange and expands outward for the next lid tightening process. (Y is the conventional L't
II minutes;
°1 (so that the end 103 in the mouth expands outward,
Schilling - The cutter is cut at +74 by applying a right-handed cutter to the outward facing blade from the inside of the can 20.

[Problem to be Solved by the Invention 1] In manufacturing Jm of netquin λ, first, a long cylindrical barrel is made by 1ζ11, a cylindrical barrel is made by 111, and then each of the barrels is You can use the method of squeezing the end and wrapping a rug around the squeezed end, but this requires 7a.
J of can clothing 102: If the sea urchin cut opening expands outwards, the next neck-in process is applied to reduce the breathability of the cylinder body.
) There is a problem of adapting the device to /r. In other words,
In neck-in processing, the end of the delaminated material to be processed must be inserted into a cylindrical outer die with a constricted tip. If the outer diameter is larger than the inner diameter of the outer die, or if the outer diameter is so large that it can barely be inserted into the inner diameter of the outer die, the end of the barrel may be slightly distorted. However, due to the need to save resources, the wall thickness of cans tends to decrease, and therefore the rigidity of λ1t tends to decrease. etc., λn
There is a possibility that the divided part of IJl will be distorted to 1 yen and will not be compatible with January's neck-in addition In'';<i1'''7. This does not solve the problem that the end of the levered λ1j body is not compatible with neck-in mounting.

Therefore, the present applicant has previously proposed a new method for producing neck-in tuna (see Figure 3 of Published Application No. 29537 of 1982). This newly proposed manufacturing method for neck-in cans allows for good shilling - the opening of the can is squeezed inward to form the final shape of the neck-in, and then the can is divided by acupuncture, thus eliminating the need for subsequent neck-in processing. Separate LfH
1 for l! However, the final shape of the neck-in before cutting and dividing is approximately 1 inch (because the width of the neck-in is human when it is formed (usually 12 to 15 mm))
Wrinkles and elastic return occur in the can body, making the final neck-in shape difficult.For this reason, it is difficult to make the final neck-in shape of the can, which makes it difficult to create a neck-in can with a dividing wall. It is hoped that this will be established.

The present invention has been made in view of the above-mentioned circumstances, and provides a method for manufacturing a neck-in can that allows the neck-in can to be smoothly assembled without causing wrinkles or elastic return in the cylinder. The purpose is to

(Explanation) Structure of the Invention [Means for Solving the Problem 1] Corresponding to this object, the method for manufacturing a neck-in can of the present invention provides a method for producing a neck-in can at the boundary between the plurality of barrels of the blank for multiple rounds of rapid firing. forming a score at the desired position, then molding the blank to form a cylinder body having a height for a plurality of cans, and then protruding inward along the score of the cylinder body. Next, a cutter is applied to the cylinder can body from the outside to divide it along the score to form a plurality of cylinder bodies, and then a neck-in is applied to the divided side end of the cylinder can body. 1Sf is required to be processed.

Hereinafter, details of the present invention will be explained with reference to the drawings without showing an embodiment.

In the jΔ method for manufacturing neck-in cans of the present invention (,Ll), first, as shown in FIG. Figure 9 (a)). The position where this score 37 is formed is 1 at minute^11! ? Two round cans +p. This is the position that should be the boundary of +20.

Next, this blank 38 is rolled up and both ends are joined by melting or gluing to form a cylindrical cylinder IH8 (Fig. 9(b)) (Showa 4.0 Patent Application Publication No. (See Publication No. 26637).

Next, Schilling Wff IN118 with a score of 37
Then, a bead is processed to protrude inwardly from the base to form a bead 12 all around the circumference (FIG. 9(C)). This bead/12
The depth is preferably 0.8 mm to 2 mm.

The depth of the bead 42 is O. If it is less than 8 mm, as will be explained later, there will be little effect of guiding and promoting neck-in processing, and the depth of the bead 12 will be 2 m.
If it is more than m, Schilling-Kan1ki18 will cut off the part 'chQ with a score of 37.

Further, the width of the bead 42 is preferably between 2 mm and 5 mm. If the width of the bead 42 is 2 mm or less, the curvature of the bead portion and the continuation portion of the can IHJ portion will be small and will curve inward, making it difficult to use as a guide for neck-in machining.1. 1. The width of the bead 42 is 5m.
If the above is the case, the force applied to Schilling-Xf Wi 8 and the processing skewer will be 7I, Schilling-can+fi, J
If 8 bends, wrinkles or 1 edge becomes light 4 (2). After bead processing, cut 8 at the bead 42 part... 1 and make 2 f[!J's can If120 ( 7. Bead processing and cutting are carried out using the neck-in cylinder can shown in Fig. 1.

That is, in FIG. 1, 1 is a crucian carp body dividing device for neck-in. The neck-in feeding can body dividing device 1 consists of a can turret [・2, shaft turrets 1 to 3, and a lever lever rail 4].
and cutting 1]-rule 5.

Can turrets 1 and 2 are formed by forming a plurality of pockets 1 and 7 on the outer circumferential surface of a disk that is rotatable around a single horizontal axis G at a fixed position, and pockets 1 and 7 are cylinder cans i, + 8.
The shaft is held in a position parallel to the main shaft 6 with a reduced part of the outer circular surface exposed to the outside. It is arranged in a ring around it.

The shaft coolet 3 is fixed and integrated with the can coolet 2 and is rotatable around the main shaft 6. The shaft coolet 3 has the same number of shaft holes 12 as the holes 1 to 7.

The shaft chamber 12 has a cylindrical shape 41 with an axis parallel to the main shaft 6, and is arranged in an oil-like manner surrounding the main shaft 6 at a position equidistant from the main shaft 6.

Cudding rolls 5 are placed in chambers 12 and 12 respectively.
A shaft mount is provided with a sliding shaft 13 accommodated so as to be movable in the direction of the main shaft 6. That is, the shaft 13 has a large diameter base 13a and a base 1.
The cam roller 15 consists of a small-diameter tip portion 13b fixed to the base portion 13a, and a cam roller 15 is attached to the base portion 13a.
15, and as the shaft turrets 1 to 3 rotate, each tip portion 13b sequentially reciprocates in the direction of the main shaft 6 and can advance and retreat into each box [-7].

When each tip 13b has advanced by 1y, its leading edge 13C is pushed 1mm into the pocket 7.Auxiliary turret 10 is inserted into the hole 9 at a position to receive the advancement of the leading edge 13G, and holds the leading edge 13G in its normal position. is fixed to the can turret 1-2, and the auxiliary coolet 10 is rotated around the main shaft 60 by the vehicle 19 to the can turret (-2, shaft turret) which forms one unit.

The cutting D-rule 5 is shown in detail in FIGS. 3 and 4 in a nearly cylindrical shape, and the oak t-21a in front and behind it,
The horizontal position δ is determined by 21b, and the shaft 13 is rotatably fitted to the tip 13b of the shaft 13 and mounted on the shaft.

Circular around the outer circumference of the cutting roll 5! :? A + portion 16 is formed.

The cutting roll 5 is adapted to the size of λW, and is constructed so that it can be replaced by removing the knurling h 21 a when the roll 13 is 3n L/ behind the hole 9.

In addition, the cutting roll 5 rotates while pressing the can against the robare rail 4, but it is preferable to rotate it forcibly from the outside as a countermeasure against slipping. The 1° brake lever rail 1, which has a method of rotating with a bell 1-22, is fixed to the 4 side of the can turret 3 with a fixing metal fitting 35, and has a blade part 17 protruding inward from the inner peripheral surface on the right side. -ru. The cutting edge 18 of the blade part 17 has a circular arc centered on the main shaft 6 with <L'L, and its width is 1 (less than 2 points) of the circumference of the Schilling-speed 8.

The fixing position of the separator rail 4 is the annular shape of the cutting roll 5 which has entered the groove 1-7) 111 part 1G
1) A device in which the tip 18 of the blade portion 17 comes into contact with the blade.

The blade part 17 is located around a part of the outside of the can turrets 1 and 2, and the two guides are connected and fixed at the terminal end i7b of the blade part 17, and its inner surface is an extension of the arc of the tip 18. 30
is doing. The extension portion 30 forms a circular arc centered on the main shaft 6, and its radius is larger than the radius of the circular arc of the tip 18, and is located away from the cutting roll 5.

Can body for neck-in cylinder;', ++ equipment 1t, input section 23 that feeds cylinder can 11n 8 into cans 1 to 2, and feeds out Sepathy 1 to can 1B120, which are produced products. 1 and 24, for which the prior art described in 1) a can be used.

That is, the input section 23 sends 263 to the feeder 1.
Hey, feeding turrets 1-2G are can turrets;・2
is in contact with the upper shaft 6 at the feed position △, and the upper shaft 6 and flat i'J <K 輔2
The sugar turret 1-2 rotates around the turret 1-2 in the direction of the warp 1, and a plurality of sockets 1-27 which receive the cylinder can 148 in a posture parallel to the 'I'lil 25 on the outer peripheral surface are formed.

(At Q position Δ, the rotation ΦZ speed of both turrets 1- is adjusted so that the turrets 1 to 27 and the cylinders 1 to 7 overlap in the same position, 8 (,1 After being rotated to position A and IS, guide plate 2
B and is guided away from the infeed coolet 26 and held in the can coolet 2. The guide plate 28 is located on the outside of the can turret l-2 from the device △ to the starting end 17a of the hive turret rail, and its inner surface is located at the tip 1.
The extended portion 30 of the circular arc drawn by 8 is smaller in radius than the diameter of the circular arc of the tip 18 and is located further away from the cudding roll 5.

On the other hand, the feeding turret is 1 to 2G, and the L can diameter and height can be adjusted to adjust the capacity. f31 and the guide rod 32 are connected to CJ3, and the cylinder speed control 8 that is fed by these is the poplar 1 of the feeding turret 1-26.
It'l: is made so that it enters into 27 sequentially. .

In addition, the exit guide 33.34 that connects the exit part 24 (the two terminal ends 29a of the guides 29a! It has a position and shape that allows it to be released from turret 2 and sent out to 1.

[For fl''] Next, the operation of the present invention using the neck-in feeding can body dividing device configured as described above will be explained with reference to FIG.

Here, the divided Zubesa shilling can body 8 is made by rolling up a blank 38 on which a score 37 has been formed in advance and joining the two ends by welding or gluing, etc., at the divided Zubesa position as shown in FIG. 9(a). There is a cylindrical C (patent application published in 1965)
．． No. 26637), its inner diameter is R6 (see No. 9
Figure<b)). Guide plate 31. The cylinder is fed from between the rods 32 of the guy 1z into the holes 1 of the turrets 1 to 26 and rotated at speed control 8 fj and position AJ:, and is fed into the holes 1-7 of the can turret L-2. Here, the tip 13c of the shaft '13 has moved above the cylinder speed regulator 8.

Here, the shilling can barrel 8 is guided by the guide plate 28 and separated from the feeding coolet 26, and the can turret l-2
It rotates in direction 41 according to the rotation of .

While rotating to the position B where it comes into contact with the tip 17a of the blade part of the shaft 13b, the shaft 13k) enters the sill can S in the box 1-7, and the leading end 13c of the shaft 13b is the auxiliary turret. It fits into the hole 9 of No. 10.

At position B, when the starting end i7a of the blade 17 comes into contact with the original groove 1G of the cutting roll 5, the cylinder λπ cylinder 8 is pressed between the blades 17 of the cutting roll 5. This part subjected to 1 fire pressure corresponds to the part where the score 37 was formed, and the part with the score = 37 becomes the bead part 42 protruding inwardly as shown in FIG. 9(c). In this case, the surrounding portion IJ other than the portion to be squeezed is in contact with the outer circumferential surface of the cutting roll 5, so that deformation of q' and q does not occur.

This beading process is completed at δG after moving along the arc of the cutting edge 18 of the blade 17 by a length approximately equal to the girth of the chisel of the shilling-can 18, and from C to the position of the terminal point 17b of the blade 17. Then, the cutting process is performed by continuing to press and press, and the two valleys 1/can 18120 (inner diameter R2
) (Fig. 9(d)), and R<R2<R6.

After passing the position, the brackets 1-7 are rotated by the guide 29, and the clamping pressure on the can 1-1 is released. Cutting roll 5 begins to withdraw completely at the end position E of the two guides)
C/i) The two ropalays i to the cutting body 20 are freed from the restraints on the cutting roll 5, and the exit guide 3
3. Guided by 34 -C separately towards the exit.

The above-mentioned actions are carried out simultaneously and sequentially in a phase-shifted manner in the plurality of holes 1 to 7. Sent one by one.

(c) It is clear from the above theory 1σl that the effect of the invention is clear, according to this invention, the cylinder of the can will not become J
It is possible to obtain a method for manufacturing a neck-in can that can obtain a can body having a shape of 1 to 1.

In particular, in the neck-in-can manufacturing method of the present invention, when dividing the cylinder body, a bead protruding inward is formed at the dividing position prior to dividing the cylinder. In order to avoid distortion at the end of the Schilling-speed split part and the end of the Hibarate 5 body, and to perform a good and efficient J: split v1, neck-in processing in the subsequent process is performed. , flanging processing is also easy.

', K tJi, when forming two separate '581' shown in the above example, one end on the Robusty 1~ side of both ends of the two-circular Separate 1~Can t1 is always connected to the back of the neck. In-processing is performed, but the llj end may require neck-in processing, 4, neck-in + 11 + It,
If not, there is. In addition, the neck-in νt arrangement of the present invention)
The blue method is not limited to forming two separate plates, for example, it may be formed into a barrette can with three turns. ;',
There are two locations at 11 hz, and peades that protrude inward are formed at each of these two locations. In this case both I! ; When forming a body of these three hipares of level 1 and can of i, both ends of intermediate valley 1 and f Ill will be in the middle of the neck-in shape of the neck-in can at both ends,
Of both ends of the canisters on both sides, the - side end t has a neck-in shape, and the other end 1. J
The neck-in process may be performed later, or the neck-in process may be performed to form a slate to a slate.

[Brief explanation of drawings]

FIG. 1 shows a neck-in can body M according to an embodiment of the present invention.
Layer dividing device, Fig. 2 shows the IT-TL shown in Fig. 1.
l! li i'lFi rJ2 clear view, Figure 3 is an enlarged sectional view of the cudding roll 1hlt rack, Figure 4 is an enlarged sectional view of the cutting roll, Figure 5 is a plan view of the separator rail, and Figure 6 is the lever lever. Side view of the rail, No. 7
The figure is a Vl-Vl sectional view in Fig. 5, Fig. 8 is an enlarged view of the △ section in Fig. 7, Fig. 9 (a) is a plan view showing a blank for cylinder rapid formation, and Fig. 9 ( b) is a plan view showing the cylinder quick-forming; FIG. 9(C) is a plan view showing the cylinder quick-forming after the beading process has been completed; FIG. 9(d) is a plan view showing the cylinder can body in a divided state. Figure, and the first
Figure 0 is a cross-sectional explanatory diagram showing a method of manufacturing carp. 1... Neck-in feeder tube dividing device 2... Can turret 3... +1 round turret 4... Leverage rail 5... Cutting roll 6...
・Main 11qlI7... Bokeh 1 to 8... Schilling-speed 9... Hole 10... Auxiliary turret 1
1...Axis 12...Axis chamber 13...'1 Haku
14... Circle in cam 15... Cam [J-ra
1G...1''yA shape ii 6 parts 17...Blade part 1
゛、・1 tip 1...canine medium 20...U
Bareto u1) 4 2-1...Nara 1~22...
Belt material 23...Inlet part 24...Outlet part 2
5... 26... To the feeding turret l 27.
...Pocket 28...Two guide plates...Guide 30...Extension part 31...Guide plate 3
2...Kite salary 33...Exit guide 34...
Exit part ID 35... Fixed money member 36... Te1
To 37...Score 38...Blank /1
1... Direction 42... Bead part patent applicant East) Osamu Kawazuki, Patent attorney representing Isokan Co., Ltd. Figure 5 17Q Figure 6 Figure 7 Figure 9 (a) (b) ( d)

Claims (2)

[Claims] (1) Form a score on a blank for multiple can bodies at a position that should be the boundary between the multiple can bodies, and then mold the blank to form a cylinder can with a height equivalent to multiple can bodies. A cylinder is formed, and then a bead is formed to protrude inwardly along the score of the cylinder can body, and then a cutter is applied to the cylinder can body from the outside to separate the cylinder can body along the score into a plurality of pieces. A method for manufacturing a neck-in can, comprising forming a can body, and then performing a neck-in process on the divided side end of the can body. (2) Manufacturing the neck-in can according to claim 1, wherein the bead formed by the bead processing has a depth of 0.8 mm to 2 mm and a width of 2 mm to 5 mm. Law.