JPH08333022A - Stopper for can conveyance line - Google Patents

Abstract

PURPOSE: To stop traveling cans at a fixed position temporarily without destroying the aligning condition of cans and generating damage such as dents or deformation by fitting a stopper head which supports and stop the cans by being brought into contact with the bottom of the can. CONSTITUTION: By operating a head drive means 35 for a can 33 aligned sideways and conveyed downwards from the above, stopper heads 34A, 34B are brought into contact with the bottom 33a of a can 33 to support and stop the can 33 for positioning. Identifying marking or the like are put on the positioned can 33. By operating a head drive means 35, the head stoppers 34A, 34B are separated from the can 33 to release stopping of the can 33. The can 33 is supported by the can bottom 33a which is the weighing portion of the can 33, so balancing of the can 33 conveyed downwards when stopping of the can 33 is released is easy to destroy, and the respective cans are in aligning condition again and conveyed smoothly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can body transport path stopper for temporarily stopping and positioning a can body transported on a manufacturing line.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 5, a manufacturing process of a can body such as an aluminum can is a stamping process in which a metal plate 2 as a raw material fed from an uncoiler 1 is punched to form a large-diameter shallow-bottom cup. 3, a deep drawing and ironing step 4 for forming the cup-shaped can body into a cylindrical shape with a small diameter and a deep bottom, a trimming step 5 for cutting the open end of the can body, and a washing of the cut can body. Cleaning step 6 for applying, and printing step 7 for performing base coating and printing on the outer surface of the cleaned can body
And an inner surface coating step 8 of applying an inner surface coating to the inner surface of the can body having an outer surface printed thereon, and necking for forming a flange by reducing the diameter of the open end of the can body having the inner surface and the outer surface printed / coated.・
It is composed of a flanging step 9 and an inspection step 10 for inspecting the formed can body.

In FIG. 5, reference numeral 11 is a cupping press, 12 is a DI press, 13 is a trimmer, 14 is a washer, 15 is a base coater, 16 is a base coater oven, 17 is a printer, 18 is a printer oven, and 19 is a coating device. , 20 is an inner coating oven, 21 is a necker flanger, 22 is a pinhole tester, and 23 is a palletizer.

In these steps, the can is subjected to each processing / treatment while being conveyed at a high speed by a conveying means such as a star wheel or a conveyor. Further, among these steps, in the deep drawing and ironing step 4 and the inner surface coating step 8, the working time required for one can is longer than that of the other steps, so a plurality of DI presses 12 and coating devices 19 are provided. Is typically done using.

That is, a large number of cans are conveyed at high speed, and in the deep drawing and ironing step 4, each DI press 12
In the inner coating process 8, each coating device 19
After being branched into two parts and subjected to each work, they are merged again and transported. This allows each DI
Since the number of can bodies that the press 12 or each coating device 19 has to handle is reduced, it becomes possible to manufacture a large number of can bodies at a high speed without reducing the manufacturing speed of the entire manufacturing process. There is.

By the way, as in the above manufacturing process, a plurality of D
When the I press 12 or the coating device 19 is used, it is desirable that the DI press 12 and the coating device 19 that actually worked the can body in those steps can be specified thereafter. In other words, in the deep drawing and ironing process 4, if there is some trouble such as friction and breakage of the mold in the inner surface coating process 8 and paint supply is cut off, nozzle clogging, etc. Can and DI so that you can investigate
It is necessary to associate it with the press 12 or the coating device 19.

Due to this need, means such as marking the identifier on the surface of the can body with a laser marking device or the like has been proposed. In this case, if marking is performed on the moving can body during transportation, it is difficult to take timing and it is difficult to perform marking on a fixed position. Therefore, a means for temporarily stopping the conveyed can body at a fixed position is being studied in order to accurately and accurately mark the fixed position.

[0008]

However, in the case of temporarily stopping the conveyed can body, if the stopped can body loses its posture, the stopped state is released and the can body is conveyed again. There is a risk that the alignment state of will be broken and defective conveyance will occur. Further, when the can body is stopped, a can body such as an aluminum can that has been thinly processed by an ironing process or the like may be damaged or deformed such as a dent.

The present invention has been made in view of the above-mentioned problems, and it is possible to temporarily move a moving can body to a fixed position without breaking the aligned state of the can body and without causing damage or deformation such as a dent. It is an object of the present invention to provide a stopper for a can conveying path that stops at any time.

[0010]

As a can body conveying path stopper for solving the above-mentioned problems, a can body conveying path in which a plurality of bottomed cylindrical can bodies are laterally aligned and conveyed from above to below. Is a stopper for a can body transporting path, which is disposed at a position to temporarily stop the can body to be conveyed at a fixed position, and which supports the can body by contacting the can bottom portion of the can body and stopping the can body. And a head driving means for bringing the stopper head into contact with and separating from the can body. A technique is adopted in which the stopper head is arranged at a position where it comes into contact with a reduced diameter portion which is formed on the peripheral edge of the can bottom portion and whose outer diameter is gradually narrowed. Further, a technique is adopted in which the tip end portion of the stopper head is set in a shape along the can bottom portion with which the stopper head abuts.

[0011]

With respect to the cans that are laterally aligned and conveyed from above to below, the head driving means is operated to bring the stopper head into contact with the can bottom portion of the cans to support and stop the cans. And position it. At this time, an identifier is stamped on the positioned can body. After that, the head driving means is operated to separate the stopper head from the can body to release the stop of the can body. At this time, since the can body is supported by the can bottom portion which is the weight part of the can body, the balance of the can body that is conveyed downward when the stop of the can body is released is not easily disturbed, and the can bodies are aligned again. Next, it is transported smoothly. Further, the can bottom has a high rigidity, and when the stopper head is brought into contact with the can body to support the can body, the can body is unlikely to be damaged or deformed such as a dent, and is caused by the elasticity of the can body when the stopper head is brought into contact. Vibration such as flipping of the can body is unlikely to occur. Further, by supporting the can body by bringing the stopper head into contact with the reduced diameter portion, which is a highly rigid portion in the can bottom portion, damage to the can body is further reduced. Then, by setting the stopper head in a shape along the bottom portion of the can against which the tip of the stopper head abuts, the surface pressure of the tip of the stopper head abutting the can is reduced, and damage to the can is prevented. It is further reduced, and the can body is less likely to slip when stopped.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows stoppers 31A and 31B for can body transport paths to which the present invention is applied. These stoppers 31A and 31B for can body transport paths are, for example, a production line for a can body 33 of a bottomed cylindrical aluminum can. At
A plurality of can bodies 33 are arranged in each can body transport path 32 for distributing and transporting the plurality of can bodies 33 to the plurality of coating devices 19 in the inner surface coating step 8 as shown in FIG. It is temporarily stopped at a fixed position for the identifier marking step (not shown) or the like.

The can body transport path 32 encloses, for example, a plurality of laterally aligned can bodies 33 by a plurality of rods 32a and a strip-shaped contact plate 32b extending parallel to the rods 32a, and from the top to the bottom. It is a rod shooter to be transported to. As shown in FIG. 2, the rods 32a are arranged on both side surfaces of the can body 33 and at opposing positions of the can bottom portion 33a, and the contact plate 32b is arranged on the opening side of the can body 33. The can body transport path stoppers 31A and 31B are arranged to face the side surface of the transported can body 33 and are spaced apart from each other by the outer diameter of one can body 33 in the transport direction. The stopper heads 34A and 34B that come into contact with each other to support and stop the can body 33 and the stopper heads 34A and 34B are moved to move the can body 3 respectively.
3 and a head driving means 35 for contacting and separating the head 3 and the head 3 with each other.

The stopper heads 34A and 34B are arranged in a facing state on the side surface side of the can bottom portion 33a of the can body 33,
The tip portion 34a is formed in a shape along a reduced diameter portion 33b which is formed on the peripheral edge of the can bottom portion 33a with which the tip portion 34a abuts and the outer diameter of the can bottom portion 33a is gradually narrowed. In this embodiment,
Can body 33 in which two stopper heads 34A and 34B are arranged side by side
The tip portions 34a of the two can bodies 33 have a shape along the diameter-reducing portions 33b of the two can bodies 33 facing each other, that is, the diameter of the diameter-reducing portion 33b so that the tip portions 34a are inserted between the can bodies 33. A curved portion 34b along the curved shape is vertically symmetrically formed, and a protruding portion 34c is formed between the curved portions 34b.

The head driving means 35 includes the air cylinders 40A and 40B and the air cylinders 40A and 40B.
Support part 4 for fixing B to the rod 32a of the can body transport path 32
1A, 41B and air cylinder control means 42 are provided. The air cylinders 40A and 40B are provided with a cylinder portion 40a and a piston rod 40b, respectively, and these piston rods 40b are arranged at right angles to the conveying direction. Stopper heads 34A and 34B are fixed to the tip portions of the piston rods 40A and 34B, respectively. The rod 40b has a reduced diameter portion 33.
It is possible to move back and forth toward b.

As shown in FIG. 2, the supporting portions 41A and 41B respectively include an L-shaped member 41a and rod fixing members 41b and 41c. One of the L-shaped members 41a is fixed to the cylinder portion 40a and the other is fixed. It is fixed to the rod fixing member 41b by a bolt 41d, and the rod 32a is fixed by the rod fixing member 41b and the rod fixing member 41c.
And is fixed to the rod 32a with a bolt 41e. These rod fixing members 41b and 41c can move the entire supporting portion 41A along the rod 32a by loosening the bolt 41e, and the mounting position of the supporting portion 41A can be adjusted. is there.

The air cylinder control means 42 is connected to the air cylinders 40A and 40B, respectively, and
Based on an output signal from a can body sensor (not shown) provided on the upstream side of the can body transport path 32, pressurized air is sent and discharged in accordance with the timing of the can body 33 to be transported, and the two air cylinders 40A. , 40B is controlled.

In the can body transport path stoppers 31A and 31B having the above-described structure, the transported can body 33 is used.
Temporary stop and positioning of is performed as follows.

As shown in FIG. 1, the air cylinder control means 42 extends the piston rod 40b of the air cylinder 40A to reduce the diameter of the can body 33A conveyed from the upstream side of the can body conveyance path 32 to the can bottom portion 33a. The stopper head 34A is brought into contact with and supported by the portion 33b, and the transport upstream of the can body 33A is temporarily stopped. At this time, as shown in FIG. 3A, the can body 33 downstream of the can body 33A is transported further downstream by its own weight.

Then, by the air cylinder control means 42, as shown in FIG.
After extending the piston rod 40b of the air cylinder 40A, the piston rod 40b of the air cylinder 40A is contracted. At this time, the can body 33A locked by the stopper head 34A is lowered by its own weight, abuts against the stopper head 34B of the air cylinder 40B, and is supported and stopped to be positioned.

Further, as shown in FIG. 3 (c), the piston rod 40b of the air cylinder 40A is extended again, and the can body 33A is held by the stopper heads 34A and 34B.

In this state, the can 33A is marked with an identifier by a laser marking device or the like. After that, the air cylinder 40B is controlled by the air cylinder control means 42.
Stopper head 34B by shrinking the piston rod 40b of
Is separated from the can body 33A to open the can body 33A, and is transported to the downstream of the can body transport path 32 by its own weight.

The stoppers 31A, 31 for the above-mentioned can body transport path
When the can body 33A is stopped by B, the can body 33A is supported by the can bottom portion 33a, which is a heavy portion, so that the balance of the can body 33A is less likely to be lost when the can body 33A is released from being stopped, and the can body 33A Will be aligned again and transported smoothly. That is, when the can body 33A is supported, as shown in FIG. 4A, when the can body 33A is supported not by the can bottom portion 33a but by the opening portion, the can body 33A is supported.
A tilts toward the can bottom portion 33a, which is a heavy portion, and even if the can body 33A is to be dropped when the support is released, the can body 33A remains in the stopped state while being locked by the rod 32a and the contact plate 32b. However, by supporting the can bottom portion 33a as in the present embodiment, the can body 33A becomes a heavy portion of the can bottom portion when the support is released, as shown in FIG. 4B. While falling from 33a, the posture is returned to the normal carrying state (shown by the chain double-dashed line in FIG. 4), and the sheet is smoothly carried again.

Further, the can bottom portion 33a has a high rigidity, and when the can bodies 33A are supported by abutting the stopper heads 34A and 34B, the can bodies 33A are less likely to be damaged or deformed such as dents, and the stopper heads 34A. , 34B when contacting the can body 33
Vibration such as rebound of the can body 33A caused by the elasticity of A is unlikely to occur.

Further, the stopper heads 34A, 34B
Since the can body 33A is supported by contacting the reduced diameter portion 33b, which is a highly rigid portion of the can bottom portion 33a, with the can body 33A, damage to the can body 33A is further reduced. Since the stopper heads 34A, 34B are set in a shape along the can bottom portion 33a with which the tip end portion 34a abuts, the surface of the tip end portion 34a of the stopper heads 34A, 34B abutting the can body 33A. The pressure is reduced, damage to the can body 33A is further reduced, and the can body 33A is less likely to shift from the stopper heads 34A and 34B when stopped. Further, since the stopper heads 34A and 34B are not forcibly inserted between the juxtaposed can bodies 33 to stop the can bodies 33, an extra force for expanding the intervening can bodies 33 is applied to the can bodies 33. The can body 33 can be stopped without giving.

The above-mentioned can body transport path stoppers 31A, 31
By repeating the operation of B, the transported can body 3
3 can be surely stopped and positioned, and the can body 3
It is possible to engrave the identifier on the No. 3 or the like.

In this embodiment, the head driving means 35 including the stopper heads 34A and 34B and the air cylinders 40A and 40B having the above-mentioned shapes is adopted, but other stopper head shapes and head driving means, for example, a star wheel shape are adopted. A stopper head which is formed on the above and which comes into contact with and separates from the can body by rotation may be rotationally driven by a motor or the like.

[0028]

The present invention has the following effects. (1) By providing a stopper head that supports the can body at the can bottom portion, which is the weight portion of the can body, the balance of the can body conveyed downward when the can body is released from the stop state is less likely to be lost. Since the cans are aligned again and smoothly transported, it is possible to significantly reduce the maltransportation of the cans due to the interposition of the stopper and improve the transport efficiency. (2) Further, since the can bottom portion has high rigidity, when the stopper head is brought into contact with the can bottom portion to support the can body,
Since the can body is unlikely to be damaged or deformed, such as a dent, it is possible to significantly reduce the appearance defect of the can body due to the stopper, and at the time of contact with the stopper head, the elasticity of the can body causes vibration such as rebound of the can body. Is less likely to occur, and the posture of the can can be quickly stabilized when the can is stopped. (3) By providing the stopper head that supports the can body by bringing it into contact with the reduced diameter portion, which is the portion having the highest rigidity in the can bottom portion, damage to the can body and the like can be further reduced.
It is possible to reduce the appearance defect of the can body. (4) By setting the tip end portion of the stopper head to have a shape along the abutting bottom portion of the can, the surface pressure of the tip end portion of the stopper head abutting the can body is lowered, so that the can body is not dented or the like. The damage can be greatly reduced, the can body is unlikely to be displaced when stopped, and quick positioning can be performed.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a stopper for a can carrying path according to the present invention.

FIG. 2 is a top view showing an embodiment of a stopper for can body conveying path according to the present invention.

FIG. 3 is a schematic view for explaining the operation of an embodiment of the can body transport path stopper according to the present invention.

FIG. 4 is a schematic view for explaining a supporting state of a can body in an embodiment of the can body carrying path stopper according to the present invention.

FIG. 5 is a schematic view showing a manufacturing process of a can body.

[Explanation of symbols]

 31A, 31B Can body conveying path stopper 32 Can body conveying path 32a Rod 32b Abutting plate 33, 33A Can body 33a Can bottom portion 33b Reduced diameter portion 34A, 34B Stopper head 34a Tip portion 35 Head driving means 40A, 40B Air cylinder 40a Cylinder part 40b Piston rod part 41A, 41B Support part 41a L-shaped member 41b, 41c Rod fixing member 42 Air cylinder control means

Claims (3)

[Claims] 1. A plurality of bottomed cylindrical can bodies are arranged in a lateral direction and are arranged in a can body conveying path conveyed from the upper side to the lower side, and the conveyed can bodies are temporarily stopped at a fixed position. A stopper for a can body transport path, which comprises a stopper head that abuts on a can bottom portion of the can body to support and stop the can body, and a head drive means that abuts and separates the stopper head from the can body. A stopper for a can conveying path, which is characterized by being provided. 2. The stopper head is arranged at a position where it comes into contact with a reduced diameter portion which is formed on the peripheral edge of the can bottom portion and whose outer diameter is gradually narrowed. Stopper for can transport path. 3. The stopper for a can body transporting path according to claim 1, wherein a tip end portion of the stopper head is set to have a shape along a can bottom portion with which the stopper head abuts.