JP3717734B2 - Wrinkle confirmation winding and unwinding apparatus and method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus and a method for removing a wrinkle at a front end of a cover hook of a can that can be hermetically sealed by tightening.
[0002]
[Prior art]
The sealing performance of the can is maintained by double-tightening the flange portion of the can body and the curled portion of the can lid while the compound is wound. As a means for confirming and evaluating the sealing performance, there are a method of measuring the dimensions of the tightened portion in a non-destructive manner, and a method of measuring the dimensions by cutting a cross section of the tightened portion (JP-A-7-204766 and JP-A-9-85368). And see how to view your profile.
[0003]
However, in spite of confirming the dimensions and the like, a phenomenon that wrinkles are generated in the curled portion of the wound can lid and the sealing performance is impaired is often reported overseas. As shown in FIG. 9, the wrinkles are classified into two types, that is, a normal wrinkle 92 protruding in the outer peripheral direction of the can and a reverse wrinkle 91 protruding in the inner peripheral direction. In particular, the reverse wrinkle 91 is said to be prone to leak because it may have protrusions that break through the can body. A hard aluminum alloy is used for the lid, and the reverse wrinkles generated at the tip 13 of the cover hook 3 (occurring in the direction A in FIG. 1) as shown in FIG. This is because it is considered that the soft aluminum body portion 2a is sandwiched and reverse wrinkles may break through the body portion.
[0004]
For this reason, in order to prevent leakage, it is necessary to directly observe the presence or absence of wrinkles themselves, particularly the presence of the reverse wrinkles, as well as dimensional measurements and visual inspection of the cross-sectional profile.
[0005]
[Problems to be solved by the invention]
However, there has been no inspection machine or device for confirming wrinkles. For this reason, as a wrinkle inspection work, it has been necessary to take out the winding tightening portion in a ring shape with pliers or the like. This is not an easy task, and the number can be several tens of cans every day. Furthermore, skill is required to take out wrinkles without damaging them.
[0006]
Therefore, an object of the present invention is to provide an apparatus and a method for taking out wrinkles generated at the front end of the cover hook after tightening, in particular, reverse wrinkles easily and without being damaged.
[0007]
[Means for Solving the Problems]
The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.
[0008]
The invention according to claim 1 is a winding and tightening take-out device for wrinkle confirmation at the tip of a cover hook (3) of a can that can be hermetically sealed by winding, and a fixing means (60) for fixing the can (100), And a cutting means (50) for cutting the entire end of the tightened portion of the can into the space between the inside (15) of the folded portion of the body hook (4) of the can and the tip (13) of the cover hook. A wrinkle confirmation winding and unloading apparatus characterized by the above is provided to solve the above-mentioned problems.
[0009]
According to the present invention, since the cut surface (C) is provided below the inside of the folded portion of the body hook, after cutting, the lid portion (1) and the remaining portions of the cover hook and the body hook (3r, 4r) ) Can be easily pulled away from the body of the can in a ring shape. Therefore, an operation requiring skill using pliers or the like is not required. Further, since the cut surface is provided above the front end of the cover hook, wrinkles at the front end portion of the cover hook to be observed are not cut off, and the presence and shape of wrinkles can be reliably observed.
[0010]
According to a second aspect of the present invention, in the wrinkle check winding and unloading apparatus according to the first aspect, the cutting means feeds the rotary blade (54) along a plane perpendicular to the axis (101) of the can. It is characterized by being an excision means.
[0011]
According to a third aspect of the present invention, in the wrinkle confirmation winding and tightening take-out device according to the first aspect, the cutting means is a cutting means in which the rotary blade is fed in the direction of the axial center of the can.
[0012]
According to these inventions, the plane perpendicular to the axial center of the can serves as a cut surface, so that cutting is performed at a predetermined position over the entire circumference of the can, and the invention according to claim 1 is more reliably implemented. I can do it.
[0013]
According to a fourth aspect of the present invention, in the wrinkle confirmation winding and unloading apparatus according to any one of claims 1 to 3, the wrinkle confirmation winding and unloading apparatus includes a push-down mechanism (40) for pushing the lid of the can toward the bottom of the can. ) Is provided.
[0014]
According to the present invention, since the lid of the can is mechanically pushed toward the bottom of the can after excision, labor saving can be achieved.
[0015]
The invention as set forth in claim 5 is a method for removing a wrinkle from a cover hook tip of a can that is hermetically sealed by tightening, wherein the can is fixed, and the entire tip of the clamped portion of the fixed can is fixed. For wrinkle confirmation, which is cut out between the inside of the folded part of the body hook of the can and the tip of the cover hook, presses the lid of the can, pushes it toward the bottom of the can, and removes the cover hook of the can The above-described problem is solved by providing a winding and unloading method.
[0016]
According to this invention, since the cut surface is provided below the inside of the folded portion of the body hook, the end of the cover hook can be easily removed from the can body main body in a ring shape, and skill using pliers or the like is required. No work is required. Moreover, since the lid of the can is mechanically pushed toward the bottom of the can after excision, labor saving can be achieved. Furthermore, since the cut surface is provided above the front end of the cover hook, wrinkles at the front end portion of the cover hook to be observed are not cut off, and the presence and shape of the wrinkles can be reliably observed.
[0017]
The invention of claim 6 is the method of winding and removing for wrinkle confirmation according to claim 5, wherein the cutting method is a cutting method in which a rotary blade is sent along a plane perpendicular to the axis of the can. To do.
[0018]
A seventh aspect of the invention is characterized in that in the wrinkle confirmation winding and tightening extraction method according to the fifth aspect, the excision method is an excision method in which a rotary blade is sent in the direction of the axial center of the can.
[0019]
According to the methods of these inventions, the cutting is performed along a plane orthogonal to the axial center of the can, so that the cutting can be performed at a predetermined position over the entire circumference of the can. It can be implemented reliably.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
First, how the winding portion of the can is processed by the wrinkle confirmation winding and tightening take-out device of the present invention will be described with reference to FIGS.
[0021]
FIG. 1 shows a cross section of a can winding part. The “-”-shaped tip of the tightening portion of the lid 1 is called a cover hook 3. Further, the inverted “U” -shaped tip of the tightening portion of the trunk portion 2 is called a body hook 4. These play a critical role in the sealing of the can. The cutting position is provided on a plane perpendicular to the axis of the can between the inner side 15 of the folded portion 15 of the body hook 4 and the tip 13 of the cover hook (range indicated by D in FIG. 1).
[0022]
FIG. 2 shows a can-clamping portion of a can whose upper portion is cut horizontally by the wrinkle confirmation winding-and-carrying-out device of the present invention. The inverted “U” -shaped portion 22 of the upper portion of the body hook 4 in the winding portion and the inverted “U” -shaped portion 21 of the lid portion 1 are cut off.
[0023]
Next, the structure of the wrinkle confirmation winding and tightening take-out device of the present invention will be described with reference to FIGS. 3 is a front view of the apparatus, FIG. 4 is a plan view, and FIG. 5 is a side view. 3, 4 and 5, (a) shows the positional relationship of each component in the device before excision, and (b) shows the device after excision.
[0024]
The wrinkle confirmation winding / clamping take-out device of the present invention includes a gantry 29 and a feed mechanism 30, a push-down mechanism 40, a cutting means 50, and a fixing means 60 provided thereon.
[0025]
The feed mechanism 30 is provided to horizontally move a push-down mechanism 40 (to be described later), a support box 34 provided with the cutting means 50 and a cutting means support base 39 to predetermined positions on the gantry 29. On the gantry 29, two horizontal and parallel linear motion guides 32a and 32b, which are spaced apart from each other by a predetermined distance over almost the entire length, are attached. On the linear motion guides 32a and 32b, there is a support box 34 in which two pairs of linear motion blocks 33a and 33b and 33c and 33d that can reciprocate on the linear motion guides 32a and 32b are attached to the lower four corners. It is placed.
[0026]
On the gantry 29, a screw shaft 37 is attached by two support members 38a and 38b so that the axis of the screw shaft 37 is positioned in parallel to the two linear motion guides 32a and 32b and at the center of both. . The screw shaft 37 is attached to be rotatable about a shaft center by bearings (not shown) provided on the support members 38a and 38b. One end side (left side in FIG. 3) of the screw shaft 37 protrudes from the outer extension of the gantry 29, and a rotary handle 36 is attached to the tip end portion thereof.
[0027]
An “L” -shaped member 35 provided with a hole is attached to the lower portion of the support box 34 so as to protrude downward. An internal thread is cut in the hole. The “L” -shaped member 35 is positioned below the support box 34 so that the male screw of the screw shaft 37 and the female screw of the “L” -shaped member 35 are screwed together.
[0028]
The operation of the feeding mechanism 30 will be described below. When the rotary handle 36 is turned, the screw shaft 37 is rotated. When the screw shaft 37 is rotated, the “L” -shaped member 35 screwed to the screw shaft 37 gives the support box 34 movement in the axial direction of the screw shaft 37. On the other hand, the support box 34 is directly moved by a linear motion mechanism including two linear motion blocks 33a to 33d attached to the lower surface of the support box 34 and two linear motion guides 32a and 32b provided on the mount 29. The movable guides 32a and 32b are reciprocally movable. The linear motion guides 32a and 32b and the axis of the screw shaft 37 are provided in parallel. Therefore, by rotating the rotary handle, the support box 34 is reciprocated back and forth on the linear motion guides 32a and 32b. (Hereafter, in FIG. 3, the right direction is “front” and the left direction is “rear”.)
A push-down mechanism 40 for pushing down the cut can lid in the direction of the bottom of the can is attached to the support box 34. A hole is provided on the upper surface of the support box 34. The air-air cylinder 41 is inserted downward into the hole so that its axis is vertical and intersects with the axis of the screw shaft 37, and is fixed by a flange or the like. A disc 42 having a diameter slightly smaller than the diameter of the can lid is attached to the tip of the piston rod 41a of the air cylinder 41. The center point of the disc 42 is provided on the axial center extension line of the air cylinder 41.
[0029]
A cutting means support base 39 is attached to the front side surface of the support box 34 (the right side in FIG. 3 and the lower side in FIG. 4). The support box 34 and the excision means support base 39 are integrally movable on the two linear motion guides 32a and 32b so as to reciprocate.
[0030]
The excision means 50 is attached to the excision means support base 39. In this cutting means 50, the rotational driving force generated by the motor 51 is transmitted to the rotary shaft 52 via the speed reduction mechanism 53. The excision means 50 is attached to the excision means support base 39 so that the axis of the rotary shaft 52 is vertical and orthogonal to the screw shaft 37. A rotary blade 54 is attached to the lower end of the rotary shaft 52. The processing surface of the rotary blade 54 is set by adjusting the mounting position of the rotary blade 54 before processing so as to have a predetermined height. More preferably, the excision means 50 may be provided with a positioning mechanism to thereby position the processing surface height.
[0031]
Next, the can fixing means 60 in the wrinkle check winding and unloading apparatus of the present invention will be described with reference to FIGS. Here, FIG. 5 is a side view of the apparatus, and shows a view when the viewpoint is placed at the fixed position of the can and facing the direction of the rotary handle 36, (a) is before excision, (b) is Each component after resection is shown.
[0032]
A first fixing plate 61 a is horizontally attached to the upper surface of the gantry 29. One side of the first fixing plate 61a is hollowed into the same shape 61c as the outer peripheral circle of the can body. A vertical line passing through the center point of the hollowed circle is provided so as to be orthogonal to the axis of the screw shaft 37. On the other hand, two guide plates 62a and 62b orthogonal to the screw shaft 37 are provided on the mount 29 on the opposite side of the first fixed plate 61a. A second fixed plate 61b is provided on the two guide plates 62a and 62b so as to face each other on the same plane as the first fixed plate 61a. The second fixed plate 61b is movable in a direction perpendicular to the screw shaft 37 while being guided by the guide plates 62a and 62b. The side of the second fixing plate 61b that faces the first fixing plate 61a is also hollowed into the same shape 61d as the outer circumference of the can body. On the other end side (the right side in FIGS. 4 and 5) of the second fixing plate 61b, toggle mechanisms 63 and 64 are provided. In FIG. 5, when the lever 63 of the toggle mechanism is at the position 63a, the second fixing plate 61b is at the position farthest from the first fixing plate 61a (see FIG. 4A). On the other hand, when the lever 63 is pulled up from 63a to 63b, the second fixing plate 61b slides on the guide plates 62a and 62b in the direction of the first fixing plate 61a, and closes to the first fixing plate 61a. 100 is fixed. At this time, since the vertical line passing through the center of the oppositely cut circles of the two fixing plates 61a and 61b coincides with the axis 101 of the can, a horizontal cut surface can be realized.
[0033]
FIG. 6 shows the can 100 and the first fixing plate 61a and the second fixing plate 61b that fix the can 100. (a) is a top view, (b) is a front view. From the viewpoint of firmly fixing the can 100 to the gantry 29, the inner surface is the neck portion of the can 100 so that the surfaces where the two fixing plates 61a and 61b contact the can 100 are in close contact with the neck portion 16 of the can 100. It is desirable to process the same shape as the outer surface. Therefore, when the diameter of the can to be cut is several different types, it is necessary to prepare a pair of fixing plates suitable for each diameter in advance.
[0034]
Next, a procedure for cutting out the winding portion of the can by the above-described wrinkle confirmation winding and tightening take-out device will be described. As the first step of the procedure, the rotary handle 36 is operated so that the position of the excision means 50 comes closer to the rear of the gantry 29 (the positions in FIGS. 3A and 4A). Next, the neck portion of the can 100 to be cut is held so as to be in contact with the first fixing plate 61a, the lever 63 of the toggle mechanism is pulled up, and the second fixing plate 61b is pulled toward the first fixing plate 61a, and the can 100 is removed. Fix it.
[0035]
At this stage, the height of the lower end surface of the rotary blade 54 is between the inner side 15 of the folded portion of the body hook of the can 100 and the tip 13 of the cover hook (range indicated by D in FIG. 1). Make adjustments so that
[0036]
Next, the switch of the excision means 50 is set to “ON”, and while rotating the rotary blade 54, the rotary handle 36 is operated to slide the rotary blade 54 forward (rightward in FIG. 3A). This sliding motion is performed horizontally and in the axial direction of the screw shaft 37 by the linear motion mechanism.
[0037]
As the rotary blade 54, a type in which a contact portion with a workpiece such as a face mill is cut in a lateral direction is used. When the rotary handle 36 is further operated and the rotary blade 54 has completely traversed the upper part of the can 100 in the forward direction, the cutting process is completed. The cutting plane C coincides with the trajectory moved by the rotating surface at the lower end of the rotary blade 54.
[0038]
At this time, the upper part of the tightening portion of the can 100 is cut into a shape as shown in FIG. That is, the inverted “U” -shaped portion 22 of the upper portion of the body hook 4 in the tightening portion and the inverted “U” -shaped portion 21 of the lid portion are cut off.
[0039]
Next, with the can 100 fixed, the rotary handle 36 is operated until the disc 42 provided at the lower end of the air cylinder 41 is positioned directly above the can 100 (position in FIG. 3B). When it is confirmed that the disc 42 is set immediately above the can 100, the piston rod 41a of the air cylinder 41 is extended, and the lid 1 of the can 100 is pushed downward by the disc 42 at the tip. As described above, since the reverse “U” -shaped portion 21 (see FIG. 2) of the upper portion of the cover hook 3 in the winding portion is removed by cutting, the lid portion 1 can be easily pushed down toward the bottom of the can 100. .
[0040]
Further, the remaining portion 3r of the cover hook 3 sandwiching the remaining portion 4r of the body hook 4 is easily removed from the body portion 2 by being pushed up because the inverted “U” -shaped portions 21 and 22 on the upper side are cut away ( (See FIG. 7). As a result, the reverse wrinkle 91 generated at the tip 13 of the cover hook 3 is exposed inside the ring. Therefore, the winding wrinkles, particularly the reverse wrinkles 91 can be easily observed visually. Moreover, since the can body part tip 17 is also exposed by the above-described operation, it can be visually confirmed whether or not the body part is broken by reverse wrinkles.
[0041]
In the above embodiment, an example of cutting in the horizontal direction by a milling cutter has been shown, but cutting in the vertical direction as shown in FIG. 8 is also possible. In this mechanism, the rotational driving force generated by the motor 55 is transmitted to a shaft 56 that is vertical and orthogonal to the screw shaft 37. A machining blade is formed on the lower surface of the rotary blade 57 attached to the tip of the shaft 56. When the shaft 56 descends in the vertical direction, the rotary blade 57 is fed, and the processing blade on the lower surface of the rotary blade 57 cuts the winding portion of the can 100 from the upper side to the lower side. In this mechanism, the rotary blade 57 may be a milling cutter or a grinder.
[0042]
【The invention's effect】
As described above, since the reverse “U” -shaped portion of the upper portion of the cover hook in the tightening portion is removed by cutting, the lid is easily pushed down toward the bottom of the can. Also, since the inverted “U” -shaped portion at the top of the cover hook and the inverted “U” -shaped portion at the top of the body hook are cut away, a ring shape having a “U” -shaped cross-section sandwiching the remainder of the body hook. The cover hook is easily detached from the body by being pushed up, and a reverse wrinkle generated at the tip of the cover hook is exposed inside the ring. Therefore, winding wrinkles, particularly reverse wrinkles, can be easily observed visually. Furthermore, since the tip of the can body portion is also exposed by the above operation, it can be visually confirmed whether or not the body portion is broken by reverse wrinkles.
[0043]
In addition, since the axis of the air cylinder, the rotation axis of the cutting means, and the axis of the fixed can are all on a vertical plane passing through the axis of the screw shaft, The dynamic balance is kept good.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a cover hook and a body hook in a can winding part.
FIG. 2 is a cross-sectional view of a can winding part having an upper portion cut off.
FIGS. 3A and 3B are front views of the wrinkle confirmation winding and unloading apparatus according to the present invention, wherein FIG. 3A shows a state before excision, and FIG.
FIGS. 4A and 4B are plan views of the wrinkle confirmation winding and unloading apparatus according to the present invention, in which FIG. 4A shows a state before excision, and FIG.
FIGS. 5A and 5B are side views of a wrinkle confirmation winding and unloading apparatus according to the present invention, in which FIG. 5A shows a state before excision, and FIG.
6A is a plan view of a can fixed by a plate, and FIG.
FIG. 7 is a diagram showing a removed ring-shaped cover hook and can lid.
FIG. 8 is a conceptual diagram of an excision mechanism that performs excision in a vertical direction.
FIG. 9 is a view showing a cover hook in which wrinkles are generated.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 Cover hook 4 Body hook 13 Cover hook front-end | tip 15 Body hook folding | turning part inner side 40 Depressing mechanism 50 Cutting means 54 Rotary blade 60 Fixing means 100 Can 101 Can axial center

Claims (7)

A winding and unwinding device for checking wrinkles at the tip of a cover hook of a can that is sealed by winding,
Fixing means for fixing the can;
Cutting means for cutting the entire end of the clamped fastening portion of the fixed can between the inside of the folded portion of the body hook of the can and the tip of the cover hook;
The wrinkle confirmation winding and tightening and unwinding device according to claim 1.   2. The wrinkle-confirming winding / unscrewing apparatus according to claim 1, wherein the cutting unit is a cutting unit that feeds a rotary blade along a plane orthogonal to the axis of the can. 3.   2. The wrinkle-confirming winding / unscrewing apparatus according to claim 1, wherein the cutting means is cutting means in which a rotary blade is sent in a direction of an axis of the can.   4. The wrinkle confirmation winding and unloading device according to claim 1, wherein the wrinkle confirmation winding and unwinding device is provided with a push-down mechanism for pushing the lid of the can toward the bottom of the can. . A method for winding and removing a wrinkle at the tip of a cover hook of a can that is sealed by winding,
Fixing the can,
Cutting the entire end of the clamped fastening portion of the fixed can to the space between the inside of the folded portion of the body hook of the can and the tip of the cover hook,
Pressing the lid of the can and pushing it toward the bottom of the can,
Remove the cover hook of the can,
The wrinkle-checking winding and unloading method according to claim 1, wherein   6. The wrinkle-confirming winding and tightening extraction method according to claim 5, wherein the cutting method is a cutting method in which a rotary blade is sent along a plane orthogonal to the axis of the can.   6. The wrinkle confirmation winding and tightening extraction method according to claim 5, wherein the cutting method is a cutting method in which a rotary blade is sent in the direction of the axial center of the can.

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