JPH0729671B2 - Can winding section cutting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a winding portion cutting device used for inspecting a winding state of a double winding can.

(Prior Art) As quality control in the double canning process of a can, the double winding part of the can c is cut into narrow strips 51 as shown in FIG. 7 by a sampling inspection. Then, the cross section of the width piece is enlarged with a projector, and the body hook, the cover hook, the overlap, and the like are measured to inspect the winding state. Such inspection is generally performed at three locations at 120 ° intervals for one can. Conventionally, as a winding section cutting device for that purpose, as shown in FIG. 9, a slide base 54 which faces a pair of rotary blades 53 and supports a can body is provided. It is known that the winding tightening portion is cut into a narrow width by moving it with respect to (for example, Japanese Utility Model Laid-Open No. 1-110198).

However, this conventional device can cut both side edges 55 of the narrow piece shown in FIG. 7, but cannot cut the cutting edge 56 with the can lid panel portion. Therefore, conventionally, as shown in FIG. 8, a chuck 57 such as a drilling machine is used before cutting with the above device.
A hole 59 is opened in the can lid by the cut-off blade 58 set to, then the can is set on the slide base, and the winding portion is cut by the rotary blade.

(Problems to be Solved by the Invention) The conventional device as described above has the following problems.

(1) Two steps were required: a hole was cut in the can lid with a cutting blade, and the seam band was cut with a rotary blade. However, when the can is installed on the slide base, the hole formed by the cut-off blade must be installed so as to face the rotary blade, so positioning is troublesome and work efficiency is poor.

(2) Since the positions of the rotating teeth are fixed, the cans having a larger diameter than the small-diameter cans do not have the rotating teeth and the cutting length required for the inspection cannot be obtained.

(3) Since the can body crimping portion cannot be adjusted according to the can diameter, the applicable can types are limited.

(4) Since the can slide base is flat in the can axis direction, the can can be changed due to the difference in the winding part diameter due to the difference in the plate thickness of the top and bottom cover or the difference in the seam band diameter and the flange diamond of the open top can It was set diagonally and was unstable.

(5) Since the can is held only by the barrel, it is unstable and the cutting depth is likely to be uneven.

The problems to be solved by the present invention are the above-mentioned problems (1) to (5) that the prior art has. Therefore, an object of the present invention is to provide a device for cutting a can wound portion which does not have such problems.

(Means for Solving the Problems) The most characteristic configuration of the device for cutting a can winding portion of the present invention which achieves the above object is such that the tip of the cutting edge faces the tip of the can mounting table in the axial direction of the can. A cutting blade for making a hole in a can lid installed on a table, and a pair of rotary cutters whose tooth tips are located closer to the base end side of the cutting blade than the tip of the cutting blade have a pair of rotary cutters. The problem of 1) was solved. In addition, the problem (2) is solved by installing the cut-off blade and the rotary cutter on the machine base so that the height can be adjusted according to the can diameter. The above problem (3) was solved by providing a can body pressure bonding pad on the can body pressure bonding device and installing the can body pressure bonding pad so that the height of the can body pressure bonding pad could be adjusted with respect to the can mounting portion according to the can diameter. The above problem (4) has been solved by forming a can winding portion escape hole at a location of the can mounting portion of the can mounting table where the can winding portion is located. The problem (5) is solved by installing a can bottom support at the rear end of the can placing portion of the can placing table so that the position of the can bottom support can be adjusted according to the can height direction.

(Function) By rotating the rotary cutter with the can body set on the can placing table and moving the can placing table to the cutter side, the cutting blade first makes a hole by making contact with the can lid and then rotating. The seam band portion is cut following the hole by a cutter, and the test piece can be cut in one step. Moreover, since the can lid is pierced while it is placed on the can placing table, it is not necessary to position the can, which has been pierced, unlike the conventional case when the can is placed on the can placing table.

In addition, the position of the can bottom support is adjusted in advance according to the can height, and when the crimp pad of the can body crimping device is lowered, the crimp pad holds the can body with just the proper pressure. By finely adjusting in advance, the can is placed on the can receiving part, the can body is pressed by the crimping pad, and the can bottom is locked by the can bottom support so that the can body is securely held so as not to shift during cutting. be able to. In this state, the can tightening portion is fitted in the seam band escape hole, and is supported in parallel with the can receiving portion.

On the other hand, by adjusting the height position of the rotary cutter and the cut-off blade in advance according to the can diameter, it is possible to always properly cut the test piece even if the cans have different can diameters.

(Example) Hereinafter, the Example of this invention is described in detail based on drawing.

1 to 6 show an embodiment of a winding portion cutting device according to the present invention, FIGS. 4 to 6 are overall views thereof, and FIGS. 1 to 3 are enlarged schematic views of characteristic portions thereof. Is. Therefore, the overall structure will first be described based on the overall views of FIGS.

Reference numeral 1 in the drawing is a can placing table, and a groove-shaped can receiving portion 2 is formed on the upper surface of the can placing table in the can axial direction so that the can body can be easily received. The can receiving portion is supported through a bracket 6 on a rack 5 that is supported by a pinion 4 that is rotatably driven by a table feed handle 3 and that is supported by a machine base and is movably supported in the axial direction of the can. Further, the bracket 6 is provided with a can bottom support adjusting screw rod 8 for adjusting a can bottom support 7 located at the rear end of the can receiving part 2 with respect to the can receiving part 2 according to the can height. The mating female threaded nut 9 is fixed (Fig. 6). The can bottom support 7 is fixed to a bracket 10 formed with a female screw that is screwed into a can bottom support adjusting screw rod 8.
By rotating the handle 11 fixed to the tip of the can bottom support adjusting screw rod 8, the bracket 10 slides left and right, and the can bottom support also slides accordingly, and its position can be arbitrarily changed according to the can height. It can be adjusted. Reference numeral 12 is a bearing fixed to a machine base for slidably bearing the can bottom support adjusting screw rod 8.

13 is supported by a support plate 14 which is vertically movable with respect to a guide member 19 standing on a can placing table so as to be adjustable in the vertical direction, and the body of the can placed on the can receiving portion is placed from above. It is a can body crimping device for pressing and fixing, a crimping pad 16 is attached to the lower end of the crimping adjustment rod 15 screwed to the support plate, and the crimping adjustment knob 17 is rotated to perform crimping according to the can diameter. The height of the pad can be finely adjusted with respect to the support plate 14. The support plate 14 can be moved up and down with respect to the guide member 19 by operating the lever 37.

Further, as clearly shown in FIG. 1, the can receiving portion is provided with a seam band escape hole 18 and / or a flange escape hole at a seam band mounting portion and / or a flange mounting portion of the can. The barrel is placed parallel to the can receiving part.

Reference numeral 20 denotes a can lid perforating device, which projects toward the can mounting table via a bracket 22 screwed to the lower end of a parting blade adjusting rod 21 supported by a machine base so as to be vertically movable. It has a cutting blade 23 for rotating, and by rotating the cutting blade adjusting nose 24, the height position of the cutting blade can be adjusted according to the can diameter (see FIG. 1). As shown in FIG. 2, the cut-off blade 23 has two elongated holes 34, 34 formed in its axial direction so that the two rotary cutters 27, 27 penetrate therethrough.

A cutter device 25 is shown in detail in FIGS. 3 and 4. Attach the rotary cutter adjustment rod 28 to the bracket 56 fixed to the top of the vertical movement guide 55 fixed to the machine base.
Is rotatably supported (not vertically moved), and a bearing block 30 is screwed to the lower end of the adjusting rod. A guide piece that fits in a dovetail groove formed in the vertical movement guide is formed on a side portion of the bearing block, and the vertical movement adjustment rod is turned by rotating a rotary cutter adjustment knob 29 provided on the top thereof. The bearing block 30 is guided by the vertical movement guide and slides up and down to adjust its height position. The cutter shaft 26 is borne by the bearing block 30,
Two rotary cutters 27, 27, which are fixed at intervals of the width of the seam to be cut, are provided so as to project upward from the elongated holes of the cut-off blade 23. A pulley is provided at the end of the cutter shaft 26.
31 is fixed, the belt is transmitted between the pulley and the pulley 33 fixed to the output shaft of the motor 32 fixed to the machine base,
The cutters 27, 27 are rotationally driven.
Numerals 57 and 58 are clamp levers for clamping the bearing block with respect to the machine base.When adjusting the height of the bearing block, the clamp is released to allow vertical movement and does not move after adjustment. So that it is fixed. Reference numeral 35 denotes a cooling liquid layer, which is provided under the rotary cutter 27 to cool the cutter as shown in FIG. 1, and 36 is a plate for preventing oil scattering.

39 is an arc-shaped cover that is openable and closable on the machine base so as to cover the upper part of the cutting device to prevent noise and danger during cutting, and is molded with transparent resin, etc. Even if it is inside, if the cover is open,
The cutter does not rotate. 40 is a handle of the cover. A switch box 41 includes a forward rotation switch 42, a reverse rotation switch 43, and a stop switch 44.

This embodiment is configured as described above, and the position of the can bottom support 7 is adjusted in advance by rotating the can bottom support adjusting screw rod 8 with the handle 11 according to the can height, and the can body crimping device is also used.
When the crimp adjustment knob 17 of 13 is rotated and the lever 37 is rotated to lower the crimp pad 16, fine adjustment is performed in advance so that the can body is held with just the proper pressure. Then, the can is placed on the can receiving portion 2 of the can placing table 1 with the crimping pad in the upper position, and the crimping pad operating lever of the can body crimping device 13 is placed.
While manipulating 37, the can body is pressed by the crimping pad, the can bottom is locked by the can bottom support 7, and the can body is held so as not to escape to the right in the drawing at the time of cutting. Further, in this state, the seam band portion and / or the flange portion of the can is fitted in the seam band escape hole 18, so that it is supported in parallel with the can receiving portion.

On the other hand, the rotary cutter 27 and the parting blade 23 have their height positions individually adjusted in advance in accordance with the can diameter by the cutter adjusting knob 29 and the parting blade adjusting knob 24.

As described above, with the can c set, the arc-shaped cover 39
Is closed and the forward rotation switch 42 is pressed to rotate the rotary cutter 27. Then, when the table feed handle 3 is operated, the pinion 4 rotates and the rack 5 moves left in the figure, so that the can placing table 1 fixed to the rack also moves left. As a result, the can is set on the can placing table 1 and the can moves together to the left. The can lid is first hit by the cutting blade to make a hole in the can lid, and then the seam band is cut by the rotary cutter. . Then, when the table feed handle is released, the table automatically returns to the home position by the return spring 38.

When cutting soft cans such as aluminum cans,
There is a case where the cover part gets up and cannot be placed on the projector, but this can be prevented by pressing the reverse switch and reversing the cutter.

(Effect) The present invention is configured as described above and has the following special effects.

Hole cutting on the can lid and cutting of the winding part can be done in one process, and accurate positioning is not required when installing the can on the placing table, so the work of cutting the winding part is greatly simplified and compared to the conventional method. Work efficiency is significantly improved.

According to the structure of claim 2, the pinion rack mechanism facilitates the feeding of the can placing table, and the can winding portion can be easily cut with a weak force.

According to the configurations of claims 3 and 4, the positions of the cutting blade and the rotary cutter can be adjusted according to the can diameter, so that the can clamping portion can always be properly cut regardless of the can diameter.

According to the configurations of claims 5 to 7, the cans can be reliably held on the can mounting table regardless of the size of the cans, and the can clamping portion can be cut for all kinds of cans.

[Brief description of drawings]

1 to 6 show an embodiment of a device for cutting a can winding portion according to the present invention, FIG. 1 is an enlarged schematic front view of a main portion thereof, FIG. 2 is a plan view of a cut-off blade portion, and FIG. Is an enlarged front view of the supporting portion of the rotary cutter, FIG. 4 is a plan view of the entire apparatus, FIG. 5 is a partial front sectional view, FIG. 6 is a partial side sectional view, and FIG. FIG. 8 and FIG. 9 show perspective views of a can in a cut state, FIG. 8 shows a front view of a state in which a hole is opened in a can lid, and FIG. It is a side view shown. 1: can mounting table, 2: can receiving part, 3: table feed handle, 4: pinion, 5: rack, 7: can bottom support, 8: can bottom support adjusting screw rod, 13: can body crimping device, 15 : Crimping adjustment rod, 16: Crimping pad, 17: Crimping adjustment knob, 18: Seam band relief hole, 2
0: Drilling device, 21: Cutting blade adjusting rod, 23: Cutting blade,
24: Cutoff blade adjustment knob, 25: Cutter device, 26: Cutter shaft, 27: Rotating cutter, 28: Cutter adjustment rod, 29: Cutter adjustment knob, 32: Motor, 40: Cover

Claims (7)

[Claims] 1. A can placing table having a can placing portion for placing a can and slidably mounted on a machine base, and a tip of a cutting edge faces a tip of the can placing table in an axial direction of the can. A cutting blade that is installed on the machine base so as to make a hole in the lid of the can placed on the can mounting table, and a pair of tooth tips located from the tip of the cutting blade to the proximal end side of the cutting blade. A device for cutting the can winding part that consists of a rotary cutter. 2. The can winding section cutting device according to claim 1, wherein the can mounting table is slidably installed on the machine base by a rack and pinion mechanism on the side of the cutting blade and the rotary cutter. 3. The can winding portion cutting device according to claim 1, wherein the parting blade is installed on the machine base so as to be adjustable in the can radial direction according to the can diameter. 4. The rotary cutter is installed on a machine base so as to be adjustable in a can diameter direction according to the can diameter.
The device for cutting a can wound portion described. 5. The can winding section cutting device according to claim 1, 2, 3 or 4, wherein the can placing table has a can body pressure bonding device having a pressure bonding pad that can be adjusted up and down according to the can diameter. 6. The can bottom support provided at the rear end of the can placing portion of the can placing table so as to be adjustable in accordance with the can height direction. Can winding section cutting device. 7. The can winding portion escape hole is formed at a position of the can mounting portion of the can mounting table where the can winding portion is located. Cutting device for can winding part.