JPH10146903A - Method for charging boiler shell blank material in surface treatment device of boiler shell blank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the charging method of a boiler shell blank material in the surface treatment device of a boiler shell blank, by which a surface treatment can favorably by applied from the tip of a boiler shell blank material in a continuous form at the start of surface treatment device and consequently a cost can be reduced by preventing the waste of the boiler shell blank material from developing. SOLUTION: At the start of the operation of the surface treatment device A of a boiler shell blank surface-treating or pasting of synthetic resin film F1 and F2 to the band-like boiler shell blank material W1 , in a continuous from, leading plate material X having enough length of allowing to stretch between a charging part 2 and a delivering part 8 is connected to the tip of the boiler shell blank material W1 and then charged from the charging part 2. When the terminal of the leading plate material X passes through a film pasting means 4, the pasting work of the synthetic resin films F1 and F2 with the film pasting means 4 is started from the tip of the boiler shell blank material W1 . When the terminal of the leasing plate material X passes through the delivering part 8, the leading plate material X is cut off the tip of the boiler shell blank material W1 and recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for charging a blank material for a can body in a surface treating apparatus for a can body blank.

[0002]

2. Description of the Related Art As to an apparatus for performing surface treatment of a can body blank by thermocompression bonding synthetic resin films on both sides of the can body blank, the present applicant has previously disclosed Japanese Patent Application No. 3-1986 (Japanese Patent Application Laid-Open No. 5-31868). Gazette).

[0003] This kind of can body blank surface treatment apparatus is
First, the can body blank material is heated by the heating unit while the long can body blank material is charged from the charging section and is continuously conveyed. Next, biaxially stretched polyethylene terephthalate is adhered to a long can body blank material by a film adhering means provided downstream of the heating means. In the process of continuously transporting the long can body blank material, the film sticking means corresponds to one surface of the can body blank material (the surface on the front side of the can body) corresponding to a single can body. A long biaxially stretched polyethylene terephthalate film having a plurality of pattern prints arranged in the longitudinal direction is attached, and a plain biaxially oriented polyethylene terephthalate film is attached to the other surface of the can body blank material. Then, the can body blank material with the biaxially stretched polyethylene terephthalate adhered to the surface in a long state is heated again by the heating and bonding means provided downstream of the film bonding means. Then, the sheet is cut at predetermined lengths by a cutting unit provided on the downstream side of the heating and bonding unit, and is discharged from the discharging unit.

[0004] Each can body blank material dispensed here is:
Since a plurality of can body blanks formed in a strip shape but still corresponding to a predetermined number of can bodies are integrally connected in the longitudinal direction, further, the discharged strip-shaped can body blank material Is conveyed in the width direction thereof and cut by a plurality of cutters provided at intervals corresponding to the can body blank forming a single can body along the longitudinal direction of the can body blank material. Thereby, the can body blank material is divided into a plurality of can body blanks in one behavior. Then, each can body blank is conveyed to a welding device, formed into a cylindrical shape by the welding device, and both ends are welded and joined to form a cylindrical can body.

[0005] In the above-mentioned surface treatment apparatus, when the biaxially stretched polyethylene terephthalate film is adhered by the film adhering means, tension is applied to a long can body blank material being conveyed and the can body blank material is adhered. This is performed in a state where bending is prevented.

In this type of surface treatment apparatus, a long can body blank material is stretched and transported between an input section and a payout section, so that a stable tension is applied to the can body blank material being transported. Has been granted.

[0007]

However, when the surface treatment apparatus is started, sufficient tension is applied to the can body blank material until the leading end of the long can body blank material is fed from the input section to the discharge section. Not done. Further, at the beginning of the start of the surface treatment apparatus, the temperatures of the heating means and the heating and bonding means have not been sufficiently increased. Therefore, even if the leading end of the long can body blank material passes through the film attaching means, the work of attaching the biaxially stretched polyethylene terephthalate film is not performed, and the leading end of the can body blank material further reaches the dispensing section, When sufficient tension was applied to the can body blank material by being stretched between the input section and the payout section, the sticking operation by the film sticking means was started. Thereby, when the sticking operation of the film sticking means is started, tension is applied to the can body blank material, and the heating means and the heat bonding means also have a sufficient heating temperature. However, the biaxially stretched polyethylene terephthalate film is not attached to the can body blank material from the leading end of the can body blank material that has reached the dispensing section to the position where the attaching operation by the film attaching means is started. The desired can body cannot be obtained from the part. Therefore, every time the surface treatment apparatus is started, waste is generated in the can body blank material, and there is a disadvantage that the cost is increased.

[0008] Further, when a problem occurs in the welding device or the like, the transport of the can body blank material by the surface treatment device is temporarily stopped, and after the problem is resolved, the can body blank material is removed by the surface treatment device. Transport is resumed. However, when the transport of the can body blank material is stopped in the surface treatment apparatus in this way, the can body blank material is stopped while being heated by the heating means or the heating and bonding means, and the portion is excessively heated. There is a possibility that a defect may occur in the film sticking by the film sticking means or a deformation may occur in the can body blank material. Thereby, when the transport of the can body blank material is restarted, the can body blank material that has been stopped in the surface treatment device is discharged without performing the surface treatment, and waste occurs in the can body blank material. There was a disadvantage that the cost was high.

According to the present invention, it is possible to solve the above-mentioned inconvenience and to perform a surface treatment without causing waste to the can body blank material at the time of starting or resuming after a temporary stop of the surface treatment apparatus. It is an object of the present invention to provide a method for charging a can body blank material in a can body blank surface treatment apparatus capable of reducing costs by using the method.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method for producing a long strip-shaped can body blank by stretching the material over a conveying path between a charging section and a discharging section. The can body blank material is continuously conveyed while applying tension to the material, and the can body blank material is heated by a heating means provided in the conveyance path, and a film sticking means provided on the downstream side thereof A method for charging a can body blank material in a can body blank surface treatment apparatus for performing a surface treatment of attaching a synthetic resin film to the surface of the can body blank material by the method, wherein A leading plate having a length that can be stretched is connected between the portion and the payout portion, and the leading plate is inserted from the input portion, and when the end of the leading plate passes through the film sticking means, Tip of can body blank material Then, the sticking operation of the synthetic resin film by the film sticking means is started, and when the end of the leading plate passes through the payout portion, the leading plate is separated from the tip of the can body blank material and collected. It is characterized by the following.

According to the method of the present invention, first, when starting the surface treatment apparatus, the rear end of the leading plate is connected to the front end of the can body blank material to be charged into the surface treatment apparatus. Next, the leading plate is put into a surface treatment device. The leading plate material supplied to the surface treatment device is conveyed prior to the can body blank material, and passes through the heating means and the film sticking means to reach the payout section. At this point, the leading plate is stretched between the input section and the payout section. Further, the can body blank material connected to the trailing end of the leading plate, which is connected to the leading plate that is continuously conveyed, is charged from the charging section. At this time, since the leading plate has already been stretched between the input portion and the payout portion and has been given tension, tension is also applied to the can body blank material that has passed through the loading portion following the leading plate. Is done. In addition, the temperature of the heating means rises sufficiently while the leading plate is being conveyed. Then, when the leading end of the can body blank material passes through the film attaching means, the film attaching means starts the operation of attaching the synthetic resin film to the can body blank material. on the other hand,
The leading plate material is continuously paid out from the payout unit. continue,
When the front end of the can body blank material having the surface to which the synthetic resin film is adhered is discharged from the dispensing section following the rear end of the leading plate material, the front end of the can body blank material and the rear end of the leading plate material are Disconnect. Then, the leading plate material separated from the can body blank material is collected.

Thus, when the surface treatment apparatus is started,
By charging the leading plate before charging the can body blank material, the leading end of the can body blank material is sufficiently heated when passing through the heating means, and the leading end of the can body blank material is attached to the film sticking means. When passing through the can body blank material, sufficient tension is applied to the can body blank material to prevent bending and meandering, so that a good surface treatment can be performed from the front end of the can body blank material. Therefore, the surface treatment can be performed without waste on the can body blank material, and the cost can be reduced.

[0013] Further, the present invention is characterized in that, when the transport of the can body blank material is temporarily stopped, a back end of the transported can body blank material is stretched between the input section and the payout section. Connecting the leading plate having a possible length,
The can body blank material is fed from the charging section in series, and when the end of the can body blank material passes through the film sticking means, the film is cut to stop the supply, and the synthesis by the film sticking means is performed. Stopping the attaching operation of the resin film, temporarily stopping the conveyance of the leading plate when the leading plate is stretched between the input section and the payout section, and conveying the can body blank material. When resuming, the leading end of the can body blank material to be charged is connected to the rear end of the leading plate, and the leading plate is inserted from the loading section in series with the leading plate, and the end of the leading plate is the film. When passing through the sticking means, the sticking operation of the synthetic resin film by the film sticking means is restarted from the leading end of the can body blank material, and when the end of the leading plate material passes through the payout part, the leading Plate for the can body And recovering separately from the tip of the link material.

According to the method of the present invention, for example, when a trouble occurs in a post-process of the surface treatment device and it is necessary to temporarily stop the conveyance of the can body blank material, first, the conveyance is performed along the surface treatment device. The leading plate is connected to the rear end of the can body blank material being conveyed. At this time, the conveyed can body blank material may be cut in the vicinity of the charging section to form a rear end. As a result, the leading plate material is supplied from the charging section in a continuous manner to the can body blank material. Next, when the end of the can body blank material passes through the film sticking means, the supply of the film is stopped by cutting the film, and the sticking operation of the synthetic resin film by the film sticking means is stopped. As a result, the discharged can body blank material is subjected to a surface treatment up to the rear end. When the leading plate is stretched between the input section and the payout section, the transport of the leading plate is temporarily stopped. Thereby, it is the leading plate that is heated by the heating means in the surface treatment apparatus, and it is possible to prevent the can body blank material from being excessively heated. Thereafter, when transporting the can body blank material is restarted, the leading end of the can body blank material to be charged is connected to the rear end of the leading plate.
Since the leading plate has already been stretched between the input portion and the payout portion, sufficient tension is applied to the can body blank material conveyed following the leading plate. Moreover, when the end of the leading plate material passes through the film sticking means, since the synthetic resin film sticking operation by the film sticking means is restarted from the tip of the can body blank material,
The surface treatment can be favorably performed from the tip of the can body blank material without any wasteful portion. Then, as described above, the leading plate material that has passed through the payout section is separated from the leading end of the can body blank material and collected. Therefore, even when the surface treatment device is temporarily stopped, the surface treatment can be satisfactorily performed on the blank material of the can body without waste, so that the cost can be reduced.

In the present invention, further, the leading plate material separated and collected from the tip of the can body blank material is connected to the tip of the can body blank material when the can body blank material is charged, and is connected to the charging section from the charging section. It is preferable to put in.
As a result, it is possible to prevent the increase in cost by reusing the collected leading plate material.

[0016]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing the present embodiment apparatus, FIG. 2 is an explanatory view showing a charging step of a can body blank material at the time of starting the surface treatment apparatus, FIG. 3 is an operation explanatory view of a leading plate material collecting means, and FIG. It is explanatory drawing which shows the injection | pouring process of a can body blank material at the time of a stop of a surface treatment apparatus.

[0017] In the surface treatment apparatus A of the can body blank shown in FIG. 1, the blank material supply means for supplying a metal can body blank material W ₁ long from the input unit 2 1, 3 the blank material supply means heating means for heating the can body blank material W ₁ supplied from the 1, 4 bonded by supplying a biaxially stretched polyethylene terephthalate film F _1, F ₂ to the can body blank material W ₁ which has been heated by the heating means 3 The film sticking means 5 to be attached is a heat bonding means for reheating the can body blank material W ₁ sent out from the film sticking means 4, and 6 is the can body blank material W ₁ sent out from the heat bonding means 5. cooling means for cooling the 7 is the first cutting means to dispensing from the dispensing portion 8 by cutting the can body blank material W ₁ fed from the cooling means 6 for every predetermined length.

Reference numeral 9 denotes a leading plate material supply means which is disposed adjacent to the blank material supply means 1 and supplies a long metal leading plate material X from the charging section 2; Is a leading plate material collecting means that winds and collects the leading plate material X paid out in the state described above while forming a coil.
Said leading plate material for X are the same width as the can body blank material W _1, a metallic steel strip formed into the same thickness.

Further, 11 is predetermined by the first cutting means 7.
Blank material W cut and dispensed at each length_Two
Transfer means for further transferring the paper from the dispensing section 8 in the longitudinal direction thereof
And 12 is a can body bra transferred by the transfer means.
Ink material W_TwoIs transported in the width direction of the can body blank material.
Fee W_TwoCut into several pieces to fit the size of a single can body
And multiple can body blanks W_ThreeThe second cutting means for obtaining
You. Can body blank formed by the second cutting means 12
W_ThreeIs provided by the conveyor 13 and the can body blank W _ThreeFrom
It is transported to a welding device (not shown) that manufactures a cylindrical can body.

Next, the surface treatment apparatus A for the can body blank
Will be described in detail. The blank material supply means 1
As shown in FIG. 1, a rotating plate 15 pivotally mounted on a rotating shaft 14 and both ends of the rotating plate 15 are provided with a can body blank material W _1.
And support shafts 17 and 18 for rotatably supporting the can body blank material coils 16a and 16b, respectively, on which are wound. Downstream of the can body blank material coils 16a and 16b supported by the support shafts 17 and 18 is the charging section 2, which includes a splicer 19 and a delivery roll 20 provided downstream of the splicer 19. Is provided. The illustration shows a can body blank material coil 16a on a support shaft 17.
Is supported, and a can body blank material coil 16 is supported on a support shaft 18.
b is supported, but can body blank material coil 16
a and 16b are the same, and it goes without saying that any of them may be supported by the support shafts 17 and 18, respectively.

One of the can body blank material coils 16a and 16b of the blank material supply means 1 is reserved. Can body blank material W wound around one coil
_{When 1} disappears, the end pulled out from the other coil is connected to the end by seam welding by the splicer 19. The splicer 19 includes a holding means 21 for sucking and holding the can body blank material W ₁ , a seam welding unit 22 which can move forward and backward facing the holding means 21, and another can at a position below the holding means 21. by sucking and holding the tip of the barrel blank material W _1, and a lift holding means 23 for lifting towards the holding means 21. The delivery rolls 20 is intended to feed the downstream pull the can body blank material W ₁ from the can barrel blank material coil 16a,
Can body is intended for feeding while applying a constant tension to the blank material W _1.

The leading plate material supply means 9 is provided with a leading plate material X.
Can be loaded in the leading plate coil 24 wound with. The leading plate material coil 24 is formed by winding a leading plate material X having a length that can be stretched between the input portion 2 and the payout portion 8.

The storage means 25 is provided for temporarily storing the can body blank material W ₁ on the downstream side of the insertion portion 2. The storage means 25 includes a plurality of rolls 26a and 26b which are vertically rotatable and rotatable.
can body blank material W ₁ is Wataru over alternately in b.

The state shown in FIG. 1 shows the can body blank material W ₁
Is drawn out of one of the can body blank material coils 16a. When the can body blank material W ₁ wound was used up in the can body blank material coil 16a, as described later, the end of the can body blank material W _1, the coil of the other barrel blank material coil 16b the wound on the can barrel beginning of the blank material W ₁ performs the task of splicing by the splicer 19.

[0025] At this time, the storage unit 25 sends out roll 26a located above and below, each roll 26a close 26b each other, the can barrel blank material W ₁ being Wataru subjected to 26b downstream. On the other hand, the supply of the can body blank material W ₁ upstream of the storage means 25 can be temporarily stopped. During this time, the connection of the can body blank material W ₁ by the above-described splicer 19 is performed. Thereafter, the roll 26a located above and below, and separated 26b to each other, storing the can body blank material W _1. Thus, the storage means 2
5 indicates that the can body blank material W ₁ on the downstream side is stopped while the can body blank material W ₁ on the upstream side is stopped.
₁ can be continuously delivered, so that both can blank material coils 16a, 16b
It can be carried out of the can body blank material W ₁ to each other of the connection work.

The heating means 3 comprises a plurality of heat rolls 2
7 are arranged. The heat roll 27 is
Can body blank material supplied from blank material supply means 1
Fee W ₁Low-frequency dielectric heating for
Can roll blank material W₁Multiply
Conduct contact heating.

The film sticking means 4 sticks biaxially stretched polyethylene terephthalate films F ₁ and F ₂ on both front and back surfaces of the can body blank material W ₁ heated by the heating means 3. Can body blank material W
It comprises a film coil 28 to the film F ₁ wound of attaching the _first surface, and a film coil 29 wound film F ₂ which is stuck to the back surface of the can body blank material W _1.
The films F ₁ and F ₂ are previously coated with a tack-free thermosetting adhesive on the sticking side, so that the film coils 28 and 2
It is wound around 9. The films F ₁ and F ₂ are pulled out of the respective coils 28 and 29 by a plurality of rolls 30 and 31, respectively, are adjusted to predetermined positions of the can body blank material W ₁ by film alignment devices 32 and 33, and then respectively. The pressure rolls 36, via a plurality of guide rolls 34, 35,
37 by being adhered to a predetermined position of the front and rear surfaces of the can body blank material W _1. At this time, the state where the biaxially stretched polyethylene terephthalate films F ₁ and F ₂ are adhered to the front and back surfaces of the can body blank material W ₁ is a temporary adhesion state where the cured state of the thermosetting adhesive is not perfect.

The heating and bonding means 5 comprises a biaxially stretched polyethylene terephthalate film F ₁ , F ₂ and a can body blank by reheating the can body blank material W ₁ to cure the thermosetting adhesive and permanently bonding the same. the adhesion state between the material W ₁ is intended to be firmly. The heat bonding means 5
Is a box-shaped body 3 having an atmosphere of a predetermined heating temperature inside.
8 and a plurality of guide rolls 3 arranged inside the main body 38
9 roll group. A circulation device (not shown) for circulating heat from the burner through a duct is connected to the main body 38. Thereby, the hot air circulates through the inside of the main body 38 to create an atmosphere of a predetermined temperature.

The cooling means 6 includes a box-shaped main body 40 having an atmosphere at a predetermined cooling temperature, and a roll group including a plurality of guide rolls 41 arranged inside the main body 40. The plurality of guide rolls 41, the internal refrigerant is circulated by surface being cooled, can barrel blank material W ₁ is contact cooling on the surface of the guide roll 41.

[0030] between the cooling means 6 and the first cutting means 7, the pinch rolls 42 that applies tension to the can body blank material W ₁ is provided. By the pinch rolls 42, a constant tension is applied to the cooling unit 8 inside the can body blank material W _1.

[0031] The first cutting means 7 are delivered in a downstream direction by the feed roll 43 a can barrel blank material W _1, the rotation of the knife cylinder 44 when the can body blank material W ₁ is fed by a predetermined length by cutting the the can body blank material W _1. Can body blank material W cut here
₂ is paid out toward the transfer means 11 by the payout roll 45 of the payout unit 8.

On the other hand, the leading plate material collecting means 10 is provided below the transfer means 11, and the leading plate material X is led out between the payout roll 45 of the payout section 8 and the transferring means 11. A leading plate material lead-out path 46 is provided.

[0033] Here, explaining the can body turned methods of the blank material W ₁ in the surface treatment apparatus A. When starting the operation of the surface treatment apparatus A of the input barrel blank material W ₁ to the surface treatment apparatus A has not yet been performed. From this state, first, as shown in FIG. 2A, the coil 24 of the leading plate X is supported on one support shaft 18 of the blank material supply means 1, and the leading plate X is pulled out from the coil 24. Input from the input unit 2. Thus, the surface treatment apparatus A starts conveyance of the can body blank material W ₁ instead lead plate material for X, the leading end of the leading plate material for X is, FIG. 1 shows a storage means 25, heating means 3, film sticking means 4, the heating unit 5, the cooling unit 6, and the first cutting unit 7 respectively pass through the payout unit 8. At this time, the film sticking means 4 and the first cutting means 7 are not started.

[0034] Then, the leading end of the leading plate material for X to be paid out continuously from the payout unit 8, as shown in FIG. 3, via a lead plate material for lead-out path 46 are different passage and can body blank material W ₂ mentioned above The leading plate material collecting means 10 is reached, and is wound by the leading plate material collecting means 10 to form the coil 24.

On the other hand, when the leading plate X is started to be recovered by the leading plate recovering means 10, the leading plate X is stretched inside the surface treatment device A over its entire length, and is placed on the leading plate X. Tension is applied. Further, the heating means 3 and the heat bonding means 5
Is sufficiently raised, and uneven heating is prevented.
Then, in the input section 2, the can body blank material coil 16a is attached to the end of the leading plate X by the splicer 19.
The tip of the can body blank material W ₁ pulled out from the connected together by seam welding. In other words, as shown in FIG.
It is kept on the tip of the can body blank material W ₁ of the supported barrel blank material coil 16a to the lifting holding means 23. Leading plate X supported on the other support shaft 18
Is completely pulled out, the rear end of the leading plate X is sucked and held by the holding means 21. Then, FIG.
(C), the polymerizing the tip of the can body blank material W ₁ by lifting the holding means 23 toward the rear end portion of said leading plate material for X, perform seam welding by the seam welding unit 22. During this time, as described above, the leading plate X is fed downstream by the storage means 25 in a state where tension is applied.

Subsequently, the tip of the can body blank material W ₁ is
It is led by the leading plate X and reaches the film sticking means 4 via the storage means 25 and the heating means 3 shown in FIG. Film sticking means 4 starts sticking work by detecting the leading edge of the can body blank material W _1. The can body blank material W _{1 at} this time
Can be detected by, for example, providing a sensor (not shown) for detecting a connection portion with the end of the leading plate X on the upstream side of the film sticking means 4. At this time, since the can body blank material W _{1 that} has already passed through the film attaching means 4 is already tensioned by the leading plate X, the attaching operation can be performed well, and the can body blank material W ₁ Has no wasteful parts.

[0037] Then, the leading end of the can body blank material W ₁ which has passed through the film sticking means 4, Figure 1 shows a heat bonding means 5
Then, it is conveyed to the first cutting means 7 via the cooling means 6.
The first cutting means 7 detects the front end of the can body blank material W ₁ and rotates the knife cylinder 44 to separate the front end of the can body blank material W _{1 from} the end of the leading plate X. Detection of the leading end of the can body blank material W ₁ at this time is, for example,
Although not shown, the detection can be performed by providing a sensor for detecting a connection portion with the end of the leading plate X on the upstream side of the first cutting means 7. Subsequently, in the first cutting means 7 is working to form the can body blank material W ₂ by cutting the can body blank material W ₁ every predetermined length is started. The leading plate material X separated here is taken up and collected by the leading plate material collecting means 10 through the payout section 8 as shown in FIG.

The can body blank material W ₂ formed in the first cutting means 7 is further transferred to the transfer means 11 as shown in FIG. _It is divided into _three parts and transported to a welding device (not shown).

The support shaft 18 on which the coil 24 of the leading plate X is supported in the blank material supply means 1.
Is loaded with the can body blank material coil 16b and the can body blank material W drawn out from the can body blank material coil 16b
_{The first end} is held by the elevating and lowering holding means 23 of the splicer 19 to prepare for the case where the can body blank material coil 16a is used up. Then, the can body blank material coil 16
When a is exhausted, as in the connection of the leading plate material for X and can body blank material W ₁ mentioned above, connecting the can body blank material W ₁ to each other.

The leading plate material X collected by the leading plate material collecting means 10 is loaded into the leading plate material supplying means 9 and is reused according to the above-described procedure when the surface treatment apparatus A is started. .

Further, for example, if it is necessary to temporarily stop the surface treatment apparatus A until the problem is solved by the occurrence of a problem in the welding device, the following prior to the stop, Do something like that. That is, as shown in FIG. 4A, the can body blank material coil 16a
Blank material W conveyed while being drawn from the container
₁ is connected to the cutters 47, 47 provided on the splicer 19;
It was cut with ', held by the holding means 21 the cut end of the can body blank material W ₁ which has been conveyed. On the other hand, the leading plate material X is pulled out from the coil 24 of the leading plate material supply means 9, and the leading end thereof is connected to the elevating and lowering holding means 23 of the splicer 19.
To be held. At this time, when the leading end of the elevating holder 23 to the can body blank material can body drawn from the coil 16b blank material W ₁ is held by releasing the holding, and holds the tip of the leading plate material for X .

Next, as shown in FIG. 4B, the leading end of the leading plate X is superimposed on the can body blank material W ₁ by raising the lifting / lowering holding means 23, and they are joined by the seam welding unit 22. During this period, have been fed the can body blank material W ₁ is to its downstream by storing means 25 as described above.

[0043] When the can body blank material W ₁ followed by leading board material X is Wataru tension between the insertion portion 2 and the dispensing portion 8, to stop the surface treatment apparatus A. As a result, the stationary plate material X instead of the can body blank material W ₁ stays inside the stopped heating means 3 and the heating and bonding means 5,
Can body blank material W ₁ can be subjected to waste without surface treatment can body blank material W ₁ to prevent the occurrence of defects due to being excessively heated.

Thereafter, when the above-mentioned problem is solved and the operation of the surface treatment apparatus A is resumed, the front end of the can body blank material W ₁ cut to the rear end of the leading plate X by the above-described procedure is joined. the turning can body blank material W _1. In the surface treatment apparatus A, the leading plate material X to which tension has been applied is conveyed, so that a sufficient tension is also applied to the subsequent can body blank material W ₁ , whereby the film attaching means 4 attaches the sheet. it is possible to impart sufficient tension to at the time of the can body blank material W _1.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing a charging step of a can body blank material at the time of starting the surface treatment apparatus.

FIG. 3 is an explanatory view of the operation of a leading plate material collecting means.

FIG. 4 is an explanatory view showing a charging step of a can body blank material when the surface treatment apparatus is stopped.

[Explanation of symbols]

A: Surface treatment device, 2: Input unit, 3: Heating unit, 4: Film sticking unit, 8: Dispensing unit, X: Leading plate,
W _1, W ₂ ... can body blank material, F _1, F ₂ ... synthetic resin film.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B29L 23:00

Claims (3)

[Claims] 1. A long and strip-shaped can body blank material is stretched over a conveyance path between an input section and a discharge section to apply tension to the can body blank material and continuously apply the tension to the can body blank material. Conveyed, the can body blank material is heated by a heating means provided in the conveyance path, and a synthetic resin film is adhered to the surface of the can body blank material by a film sticking means provided downstream thereof. A can body blank material charging method in a can body blank surface treatment apparatus that performs a surface treatment, comprising: a length that can be stretched between the charging section and the payout section at a tip of the can body blank material. The leading plate having the following is connected and thrown in from the loading section, and when the end of the leading plate passes through the film sticking means, the synthetic resin film by the film sticking means from the tip of the can body blank material Sticking It was started, when the end of the leading board material is passed through the dispensing portion,
A method for charging a can body blank material in a can body blank surface treatment apparatus, wherein the leading plate material is separated and collected from the tip of the can body blank material. 2. A continuous can body blank material is continuously stretched while applying tension to the can body blank material while stretching the long strip-shaped can body blank material over a transport path between an input section and a discharge section. A surface on which the synthetic resin film is adhered to the surface of the can body blank material by heating the can body blank material by a heating means provided in the conveying path and by a film sticking means provided downstream thereof. A method for charging a can body blank material in a surface treatment apparatus for a can body blank that performs a process, wherein when temporarily stopping transport of the can body blank material, at a rear end of the transported can body blank material, A leading plate having a length that can be stretched is connected between the input section and the payout section, and the leading section is connected to the blank section and is charged from the loading section, and the end of the blank section of the can body is connected. Is the film sticking means When passing, the film is cut and the supply is stopped, the sticking operation of the synthetic resin film by the film sticking means is stopped, and the leading plate material is stretched between the input section and the payout section. When the transport of the leading plate material is temporarily stopped and the transport of the can body blank material is resumed, the leading end of the can body blank material to be charged is connected to the rear end of the leading plate material, and the leading When the end of the leading plate passes through the film sticking means, the synthetic resin film is stuck from the leading end of the can body blank material by the film sticking means. When the end of the leading plate has passed the payout section,
A method for charging a can body blank material in a can body blank surface treatment apparatus, wherein the leading plate material is separated and collected from the tip of the can body blank material. 3. The leading plate material separated and collected from the front end of the can body blank material is connected to the front end of the can body blank material at the time of charging the can body blank material and fed from the charging section. 3. A method for charging a can body blank material in the can body blank surface treatment apparatus according to claim 1 or 2.