JPH1177203A - Lifter pressure regulation mechanism of can seaming machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily regulate the lifter pressure in a short time at low cost by a simple mechanism without any force gauge difficult to handle with respect to a can seaming machine. SOLUTION: In a litter pressure regulating mechanism, a regulation ring nut 59 is screwed in a male screw 58b integrated with a lifter plate 58, an urging member 61 is interposed between the regulation ring nut 59 and a support member 56 to movably support the lifter plate 58 downwardly in its axial direction, the regulation ring nut 59 is turned with respect to the lifter plate 58 and relatively move it in the vertical direction to regulate the urging force (the lifter pressure) of the urging member 61, a thin-walled part 1c is formed on an upper part of a part of a high part 1b of a ring-shaped cam 1, a strain gauge 45a is attached to its lower surface, and the litter pressure is calculated by the deformation quantity of the thin-walled part 1c detected by the strain gauge 45a and the calculated value is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a can body and a can lid,
The present invention relates to a lifter pressure adjusting mechanism of a can winding machine for adjusting a lifter pressure for holding a can in a can winding machine for clamping a can lid to a can body by sandwiching the can lid from above and below with a lifter plate and a chuck of a lifter. .

[0002]

2. Description of the Related Art Conventionally, a can winding machine has been known in which a can body and a can lid are sandwiched between a lifter plate of a lifter and a chuck from above and below and the can lid is wound around the can body. As a winder, there is one that winds a can by an operation as shown in FIG. As shown in FIG. 3, a ring-shaped cam 1 having a low surface portion 1a and a high surface portion 1b is fixedly provided on a main body of a can-winding machine (not shown). The chuck 3 rotates in the direction of B, and the chuck 3 rotates just above the lifter 2 in synchronization with the lifter 2. A can body (of course, with a can bottom) 7 filled with contents is placed between the lifter 2 and the chuck 3 rotating in this manner.
a is fed from the direction of arrow A by a conveyor (not shown), and is loaded on the lifter 2 located on the low surface portion 1a.
Thereafter, the can lid 7b is put on the upper portion of the can body 7a, and is sent in the direction B while the can lid 7b is pressed from above by the pad 4 provided on the chuck 3.

The lifter 2 climbs to the high surface portion 1b while holding the can body 7a and the can lid 7b between the pad 4 and the lifter 2, and when the lifter 2 has completely climbed to the high surface portion 1b, the can body 7a, The can lid 7b rotates on the high surface portion 1b while being pinched by the chuck 3 and the lifter 2 with an appropriate pressing force, and the edge of the can lid 7b is rotated by the first winding roll 5 and the second winding roll 6 on the way. The part is wound around the can body 7a. Thereafter, the lifter 2 returns to the low surface portion 1a again. At this time, the chuck 3 is detached from the can lid 7b, and the can 7 is released from being sandwiched and sent to the next step.

[0004] The can body 7a and the can lid 7b are fastened by the can winder in this manner. Here, the lifter 2 rotates between the high surface portion 1b and the chuck 3 to rotate the can. Body 7a
Pressing force between the container and the can lid 7b (hereinafter referred to as lifter pressure)
Has an appropriate value for each type of can. Therefore,
Prior to the operation of the can winding machine, it is necessary to adjust the lifter pressure to an appropriate value according to the type of the can.
The adjustment was performed by an adjustment mechanism as shown in FIG.

FIG. 4 is a cross-sectional view showing the structure of the upper portion of the lifter 2, showing a state where lifter pressure adjustment is being performed. As shown in FIG. 4, an upper slide bearing 33 is fixed to a lifter body (not shown), an upper slide cylinder 26 is fitted inside the upper slide bearing 33, and an upper part of the lifter gear 32 is placed below the upper slide cylinder 26. It is rotatably fitted. The lifter gear 32 is driven by a rotating mechanism (not shown) to rotate at a high speed, and a lower mandrel 30 is provided below the lifter gear 32.
The lower mandrel 30 is connected to a lifter gear 32 by a lower mandrel screw 29.

An upper mandrel 24 is rotatably supported on the upper slide cylinder 26 via a bearing 27. The outer periphery of the upper mandrel 24 is formed in a substantially two-stage cylindrical shape, the upper cylindrical portion is inserted into the upper slide cylinder 26, and the lower cylindrical portion is inserted into the lifter gear 32 so as to be vertically movable with respect to the lifter gear 32. Has been inserted. And
A female screw hole 24 is provided in the axial center (inner circumference) of the upper mandrel 24.
a and a hole 24b of a slightly larger diameter are formed thereunder.
A spring pressure adjusting screw 25 having a hexagonal hole 25a at the upper end is inserted into the female screw hole 24a. A compression spring 31 is interposed between the spring pressure adjusting screw 25 and the lower mandrel screw 29 via a washer 28 in the lower large diameter hole 24b. The spring pressure adjusting screw 25 is urged upward.

A lifter plate 21 is fixed to the upper part of the upper mandrel 24 together with the cover 22 by a plurality of bolts. When the can 7 is fastened, the can body 7a is placed on the lifter plate 21. The can body 7a of the lifter 2 is moved from the low surface portion 1a to the high surface portion 1b of the ring cam 1. The can 7 is raised in accordance with the rotation, and the can 7 is held between the chuck 3 and the chuck 3 provided at a predetermined height.

At this time, the lifter plate 21 is urged upward by the compression spring 31 via the upper mandrel 24, and the can 7 is held by the urging force. It becomes the lifter pressure to be clamped. Therefore, the spring pressure adjusting screw 25 is rotated to rotate the spring pressure adjusting screw 2 relative to the upper mandrel 24.
By lowering or raising the position of 5, the compression spring 31 can be compressed or expanded, and the lifter pressure can be increased or decreased. This adjustment is performed by inserting a hexagonal wrench 34 into the female screw hole 24a from the counterbore 21a formed in the center of the lifter plate 21, inserting the hexagonal wrench 34 into the hexagonal hole 25a, and then turning the spring pressure adjusting screw 25. Can do it. The counterbore 21a
Is a cap screw 23 normally screwed into the female screw hole 24a.
Is blocked by

Next, the procedure for adjusting the lifter pressure will be described. FIG. 5 is a diagram showing the measurement state of the lifter pressure in the lifter pressure adjusting mechanism of the conventional can winding machine. To adjust the lifter pressure, first, the lifter 2 is moved to a predetermined position on the high surface portion 1b of the ring-shaped cam 1. Then, as shown in FIG. 5, the spacer 43 is mounted on the lifter plate 21, the force gauge 40 is mounted thereon, and the adapter 44 is further mounted thereon. At this time, the height of the spacer 43 is determined so that no gap is formed between the adapter 44 and the chuck 3, and the height adjusting unit 40 a of the force gauge 40 is further rotated using the rod spanner 41. ,
The gap between the adapter 44 and the chuck 3 is completely eliminated.

Then, after turning the zero point adjusting knob 40d to adjust the indicated value of the force gauge 40 to 0, the height adjusting section 40a is further rotated to set a prescribed length determined according to the can winding machine (for example, The compression spring 31 is compressed by about 0.56 mm), and the force value displayed on the display unit 40c at this time is read. This force value is the lifter pressure, and if this lifter pressure is out of the specified value determined according to the type of the can, the adapter 44, the force gauge 40,
The spacer 43 is removed from the lifter plate 21, the cap screw 23 of the lifter plate 21 is further removed from the counterbore 21 a, a hexagonal wrench 34 is inserted, and the compression spring 3 is rotated by rotating the spring pressure adjusting screw 25.
The spring pressure adjustment of 1 is performed. Then, the above-described operation of measuring the lifter pressure is performed again, and the measurement operation and the adjustment operation are repeated until the lifter pressure reaches the specified value.

[0011]

However, in the lifter pressure adjusting mechanism of the conventional can winding machine described above, the lifter pressure is measured by interposing a force gauge between the lifter plate and the chuck. Adjustment is performed by inserting a hexagon wrench from the top of the lifter plate and turning the built-in spring pressure adjustment screw.If measurement and adjustment operations are repeated until the lifter pressure reaches the specified value, There was a problem that a force gauge had to be attached and detached.

Further, since the force gauge itself is difficult to handle, and the vertical distance between the lifter plate and the chuck is small and workability is poor, there is a problem that much time is required for adjustment work. This adjustment work requires intuition, and requires skill of the operator. In order to solve such a problem, Japanese Patent Publication No. Hei 8-13 discloses a technology that enables the urging force of the compression spring to be adjusted from the outside of the lifter without removing the force gauge.
391 and JP-A-8-309462. However, in the former technique, it is necessary to attach a force gauge that is difficult to handle, and in the latter technique, there remains a problem that the cost is high due to the complicated mechanism.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is capable of adjusting the lifter pressure easily in a short time without using a force gauge which is difficult to handle, and at a low cost with a simple mechanism. It is an object of the present invention to provide a lifter pressure adjusting mechanism for a can winding machine.

[0014]

In order to achieve the above object, a lifter pressure adjusting mechanism for a can winding machine according to the present invention comprises a ring-shaped cam having a low surface portion and a high surface portion, and a lifter plate on an upper portion. A lifter that rotates while being in contact with the upper surface of the ring-shaped cam via a cam roller; and a chuck that is positioned above the lifter plate and rotates in synchronization with the lifter. In a can winding machine for clamping a can body and a can lid and winding the can lid around the can body, a male screw integrally formed with the lifter plate, and screwed to the male screw to rotate with respect to the lifter plate. An adjustment ring nut that can be relatively moved in the vertical direction by doing so, a support member that supports the lifter plate so as to be movable downward in the axial direction, and an adjustment ring nut that is interposed between the adjustment ring nut and the support member, Adjustment A thin portion formed on an upper surface of a portion of a high surface portion of the ring-shaped cam, comprising a biasing member for biasing the lifter plate upward according to a vertical position of the ring nut with respect to the lifter plate; A strain gauge affixed to the lower surface of the portion for detecting deformation of the thin portion, and a force meter for calculating and displaying the lifter pressure based on the detection result of the strain gauge. .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a lifter pressure adjusting mechanism of a can winding machine as an embodiment of the present invention. so,
FIG. 1 is a schematic external view, and FIG.
3 is a sectional view taken along the line AA in FIG. The configuration of the main part of the can winding machine will be described with reference to FIG.

First, the outline of the lifter pressure adjusting mechanism of the can winding machine of the present embodiment will be described with reference to FIG. 1. In the lifter pressure adjusting mechanism of the can winding machine of the present embodiment, the high surface portion of the ring-shaped cam 1 will be described. 1b (see FIG. 3) is provided with a square hole 1A, and the upper surface thereof is provided with a thin portion 1c having a uniform thickness. The thin portion 1c is formed such that the bending rigidity is reduced by reducing the thickness, so that distortion is likely to occur. A strain gauge 45a, which is a part of the force meter 45, is provided on the center rear surface of the thin portion 1c. Affixed.

The force meter 45 is a strain gauge 45
a, a measuring section 45b, and a display section 45c. The distortion of the thin portion 1c when the cam roller 54 provided at the lower portion of the lifter 50 is positioned on the thin portion 1c is detected by the strain gauge 45a. The lifter pressure is calculated by the measuring unit 45b having an arithmetic function based on the information and is displayed on the display unit 45c. For reference, the position of the thin portion 1c in the ring-shaped cam 1 is indicated by a chain line (M portion) in FIG.

As described above, in the lifter pressure adjusting mechanism of the can winding machine according to the present embodiment, the lifter pressure is calculated from the distortion of the thin portion 1c of the ring-shaped cam 1, so that the chuck 3 and the lifter 5
It is not necessary to interpose a force gauge between 0 and 0, and it is necessary to detect the distortion generated in the thin portion 1c when the can is actually clamped. Between them, dummy cans 8 corresponding to actual cans are interposed.

Next, the configuration of the lifter pressure adjusting mechanism of the can winding machine of the present embodiment will be described in detail with reference to FIG.
As shown in FIG. 2, the lifter 50 is attached to a main body of a can screwing machine (not shown) by fixing a lower slide bearing 51 and an upper slide bearing 52 to a rotating turret 70. The lower slide bearing 51 and the upper slide bearing 52 are arranged concentrically, and each has a lower mandrel 5 inside.
3. An upper mandrel (supporting member) 56 is provided concentrically.

Although the rotation of the lower mandrel 53 is restricted by the lower slide bearing 51, it is slidably supported in the vertical direction. And the lower mandrel 53
A fork 53a is provided at the lower end of the cam, and a cam roller 54 is rotatably supported by a rotating shaft 55 which is pivotally supported by the fork 53a. On the other hand, a small-diameter rod portion 53b is provided concentrically at the upper end.

The upper mandrel 56 is rotatably supported by the upper slide bearing 52 so as to be vertically slidable. The upper mandrel 56 is driven by a rotating mechanism (not shown) via a gear portion 56a integrally formed on a lower side surface thereof, and is driven at high speed. It is designed to rotate. A large-diameter hole 56d is formed at the lower end of the upper mandrel 56, and a small-diameter hole 56b is formed at the upper end thereof concentrically.
6c. First, a plurality of bearings 57 are inserted into the large-diameter hole 56d, and the rod portion 53b of the lower mandrel 53 is inserted into these bearings 57. The rod portion 53b is connected to the inner race side of the bearing 57 by a nut 62. It is fixed to. Therefore,
The upper mandrel 56 is rotatably supported by a rod portion 53b via a bearing 57 so as to be restrained from moving in the vertical direction.

On the other hand, a rod 58a concentrically fixed to the bottom surface of the lifter plate 58 is inserted into the upper small diameter hole 56b, and its rotation with respect to the upper mandrel 56 is restricted by a key (not shown). A stopper washer 63 having a larger diameter than the small-diameter hole 56b is attached to the lower end of the rod 58a together with a nut 64, and the upward movement of the lifter plate 58 with respect to the upper mandrel 56 is restricted.

The rod 58a has a male screw 58b at its base end, and an adjusting ring nut 59 is screwed to the male screw 58b. A compression spring (biasing member) 6 is provided between the adjustment ring nut 59 and the spring receiver 60 externally fitted to the upper end of the upper mandrel 56.
1 is provided to urge the lifter plate 58 upward.

A plurality of wrench holes 59a are drilled radially on the side surface of the adjustment ring nut 59. By inserting a set screw 59b into the wrench hole 59a,
The rotation of the adjustment ring nut 59 with respect to the lifter plate 58 is restricted. In addition, by inserting a spanner (not shown) into the spanner hole 59 a and rotating the adjustment ring nut 59 to change the relative position of the adjustment ring nut 59 with respect to the lifter plate 58, the compression spring 61 is rotated.
Is adjusted. A cover 59c is attached to the lower end of the side surface of the adjustment ring nut 59 so as to cover the compression spring 61.

Since the lifter pressure adjusting mechanism of the can winding machine according to one embodiment of the present invention is configured as described above, when adjusting the lifter pressure, first, the lifter 50 is moved to the low position of the ring-shaped cam 1. Move to the surface 1a and lifter plate 5
The dummy can 8 is placed on 8. Then, the turret 70 is manually or inching-operated to move the lifter 50 to a position above the thin portion 1c provided on the high surface portion 1b. At this time, the lifter 50 is arranged at a correct position by adjusting the position so that a matching mark (not shown) attached to an appropriate place of the thin portion 1c and the lifter 50 matches.

The height H from the upper surface of the high surface portion 1b of the ring-shaped cam 1 to the lower surface of the chuck 3 at this time is adjusted to a constant height for each can type. dummy cans 8 when Ueno, cam roller 54 of the lower end (ground portion) defined determined by the cans species than the height H ₁ to the upper surface of the dummy cans 8 from the length h (for example, 0.5
(H = H ₁ -h).

Therefore, when the lifter 50 is moved onto the high surface portion 1b, the lifter plate 58 is pressed by the dummy can 8 and is displaced downward by the specified length h. This displacement h
Causes the compression spring 61 to contract as it is, and the compression spring 61 generates a repulsive force corresponding to the compression length h, and pushes up the dummy can 8 as a reaction. That is, the pressure when the compression spring 61 pushes up the dummy can 8 as a reaction is the lifter pressure.

On the other hand, the force when the compression spring 61 pushes up the dummy can 8 is applied as a reaction to the thin portion 1c of the ring-shaped cam 1 by the cam roller 54, thereby bending the thin portion 1c. The amount of distortion generated in the thin portion 1c at this time is proportional to the force (lifter pressure) applied from the cam roller 54 when the amount is small, so that the thin portion 1c
The lifter pressure can be calculated by measuring the amount of distortion generated in the lifter. Therefore, the strain gauge 45a attached to the lower surface of the thin portion 1c detects the amount of distortion generated in the thin portion 1c, and the measuring portion 45 of the force meter 45
The lifter pressure is calculated by b and displayed on the display unit 45c.

The force meter 45 (or the display unit 45)
Since c) is installed near the adjustment position, the operator looks at the numerical value displayed on the display unit 45c and inserts a wrench (not shown) into the wrench hole 59a of the adjustment ring nut 59.
And rotate it in the appropriate direction.
The compression length of the compression spring 61 is changed by changing the relative position of the adjustment ring nut 59 with respect to the display unit 4.
Adjust so that the lifter pressure displayed in 5c becomes a specified value. When the lifter pressure reaches the specified value and the adjustment is completed, the adjusting ring plate 59 is fixed to the ring plate 58 by tightening the set screw 59b.

As described above, according to the lifter pressure adjusting mechanism of the can winding machine of the present embodiment, the lifter pressure is measured by the lifter pressure applied to the thin portion 1c provided on the high surface portion 1b of the ring-shaped cam 1. Since the detection is performed by detecting the amount of distortion with the strain gauge 45a, a force gauge that is difficult to handle is not required, and the dummy can 8 may be mounted between the chuck 3 and the lifter plate 58. Therefore, the troublesome work of attaching and detaching the force gauge and the spacer in a narrow place between the chuck 3 and the lifter plate 58 is not required, and the adjustment work time can be reduced.

Since the adjustment of the lifter pressure is performed by rotating the adjustment ring nut 59 exposed to the outside of the lifter 50, the adjustment is performed while the dummy can 8 is mounted between the chuck 3 and the lifter plate 58. And the lifter pressure is always displayed on the display unit 45c at the time of adjustment. Therefore, the operator can perform the adjustment at once while checking the current value of the lifter pressure, and the adjustment operation time can be shortened because the intuition of the skill is not required.

Further, since the lifter 50 is a simple mechanism, the cost can be reduced. It should be noted that the present invention is not limited to the above-described embodiment, and can be implemented with various modifications without departing from the spirit of the present invention.

[0033]

As described in detail above, according to the lifter pressure adjusting mechanism of the can winding machine of the present invention, the force (lifter pressure) when the urging member pushes up the lifter plate is formed as a reaction from the cam roller to the ring shape. When the cam roller is on the thin portion of the ring-shaped cam, the thin portion bends and deforms due to lifter pressure applied from the cam roller. Since the amount of deformation of the thin portion corresponds to the lifter pressure applied by the cam roller, the amount of deformation of the thin portion is detected by a strain gauge, thereby eliminating the need for a difficult-to-handle force gauge. Pressure measurement is possible, and a dummy can can be installed between the chuck and the lifter plate, which is a cumbersome task of attaching and detaching force gauges and spacers in a narrow space between the chuck and the lifter plate. Is no longer necessary, and the time required for adjustment work can be reduced.

The lifter pressure is adjusted by rotating an adjusting ring nut screwed into a male screw of the lifter plate relative to the lifter plate to move the adjusting ring nut vertically relative to the lifter plate, thereby supporting the adjusting ring nut and the lifter plate. The adjustment can be performed by adjusting the urging force of the urging member interposed therebetween. Therefore, it is possible to perform adjustment while the dummy can is mounted between the chuck and the lifter plate, and at the time of adjustment, the lifter pressure is always displayed on the force meter. The adjustment can be performed at one time, and the skill of the operator is not required, and the adjustment operation time can be reduced.

Further, since the lifter has a simple mechanism, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic external view showing a configuration of a lifter pressure adjusting mechanism of a can winding machine as one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the lifter pressure adjusting mechanism of the can winding machine as one embodiment of the present invention, taken along the line AA of FIG. 1;

FIG. 3 is an operation explanatory view of a conventional can winding machine.

FIG. 4 is a side sectional view of an upper portion of a lifter showing a configuration of a lifter pressure adjusting mechanism of a conventional can winding machine.

FIG. 5 is a diagram showing a state of lifter pressure measurement by mounting a force gauge in FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 ring cam 1a low surface portion 1b high surface portion 1c thin portion 3 chuck 8 dummy can 45 force meter 45a strain gauge 45c display portion 50 lifter 51 lower slide bearing 52 upper slide bearing 53 lower mandrel 54 cam roller 56 upper mandrel (supporting member) 58 Lifter plate 58a Rod 58b Male screw 59 Adjusting ring nut 61 Compression spring (biasing member)

[Procedure amendment]

[Submission date] March 26, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

The lifter 2 rises to the high surface portion 1b while holding the can body 7a and the can lid 7b between the pad 4 and the lifter 2, and the lifter 2 rises to the high surface portion 1b, thereby causing the can body 7a and the can lid to rise. 7b rotates the high surface portion 1b while being pinched by the chuck 3 and the lifter 2 with an appropriate pressing force.
The edge of the can lid 7b is wound around the can body 7a by the winding roll 5 and the second winding roll 6. Thereafter, the lifter 2 but you lowered again to the low surface portion 1a, this time, the chuck 3 is separated from the can lid 7b, the can 7 is delivered solved the clamping to the next step.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

An upper mandrel 24 is rotatably supported on the upper slide cylinder 26 via a bearing 27. The outer periphery of the upper mandrel 24 is formed in a substantially two-stage cylindrical shape, the upper cylindrical portion is inserted into the upper slide cylinder 26, and the lower cylindrical portion is inserted into the lifter gear 32 so as to be vertically movable with respect to the lifter gear 32. Has been inserted. And
A female screw hole 24 is provided in the axial center (inner circumference) of the upper mandrel 24.
a and a hole 24b of a slightly larger diameter are formed thereunder.
The female screw hole 24a spring pressure adjusting screw 25 having a hexagonal hole 25a in the upper end portion is screwed. A compression spring 31 is interposed between the spring pressure adjusting screw 25 and the lower mandrel screw 29 via a washer 28 in the lower large diameter hole 24b. The spring pressure adjusting screw 25 is urged upward.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Next, the configuration of the lifter pressure adjusting mechanism of the can winding machine of the present embodiment will be described in detail with reference to FIG.
As shown in FIG. 2, the lifter 50 is provided with a can screwing machine (not shown).
A lower slide bearing 51 and an upper slide bearing 52 are fixed to a turret 70 rotatably attached to the main body . These lower slide bearings 5
1, an upper slide bearing 52 is disposed concentrically, and a lower mandrel 53 and an upper mandrel (support member) 56 are concentrically provided inside each.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

Although the rotation of the lower mandrel 53 is restricted by the lower slide bearing 51, it is slidably supported in the vertical direction. And the lower mandrel 53
A fork portion 53a is formed at the lower end of the cam roller 5 by a rotating shaft 55 supported by the fork portion 53a.
4 is rotatably supported. On the other hand, a small-diameter rod portion 53b is formed concentrically at the upper end.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

A plurality of spanner holes 59a are drilled radially on the side surface of the adjustment ring nut 59, and a set screw 59b is screwed into the spanner hole 59a and tightened . Lifter plate 58 of adjustment ring nut 59
The rotation with respect to is restricted. Also, stop
Loosen the female screw 59b , insert a wrench (not shown) into the wrench hole 59a, rotate the adjustment ring nut 59,
By changing the relative position of the adjustment ring nut 59 with respect to the lifter plate 58, the urging force of the compression spring 61 is adjusted. The lower end of the side surface of the adjustment ring nut 59 is covered with a cover 59 c so as to cover the compression spring 61.
Is attached.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

On the other hand, the force when the compression spring 61 pushes up the dummy can 8 is applied as a reaction to the thin portion 1c of the ring-shaped cam 1 by the cam roller 54, thereby bending the thin portion 1c. The amount of distortion caused in the thin portion 1c of this time is proportional to the force (lifter pressure) applied from mosquitoes Murora 54, by measuring the amount of strain occurring in the thin portion 1c, to calculate the lifter pressure Can be. Therefore, the strain gauge 4 attached to the lower surface of the thin portion 1c
5a, the amount of distortion generated in the thin portion 1c is detected, the lifter pressure is calculated by the measuring unit 45b of the force meter 45, and displayed on the display unit 45c.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

The force meter 45 (or the display unit 45)
Since c) is disposed in the vicinity of the adjustment position, the operator, while looking at the number displayed on the display unit 45 c, wrench
By loosening the set screw 59b of the adjustment hole 59a, inserting a spanner (not shown) into the adjustment hole nut 59a of the adjustment ring nut 59 and rotating in an appropriate direction, and changing the relative position of the adjustment ring nut 59 with respect to the lifter plate 58, the compression spring is released. The compression length of 61 is changed so that the lifter pressure displayed on the display unit 45c is adjusted to a specified value. When the lifter pressure reaches the specified value and the adjustment is completed, the set screw 59b
Tighten the adjustment ring plate 59 and lifter plate 58
Fixed to.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

As described above, according to the lifter pressure adjusting mechanism of the can winding machine of the present embodiment, the lifter pressure is measured by the lifter pressure applied to the thin portion 1c provided on the high surface portion 1b of the ring-shaped cam 1. rotating the amount of distortion, since carried out by detecting the strain gauges 45a, without requiring difficult force gauge handling, the designated position by mounting a dummy cans 8 between the chuck 3 and the lifter plate 58 Do
Just need. Therefore, the chuck 3 and the lifter plate 5
This eliminates the need for the troublesome work of attaching and detaching the force gauge and the spacer in a narrow place between the positions 8 and 8, and can reduce the adjustment work time.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

[0033]

As described in detail above, according to the lifter pressure adjusting mechanism of the can winding machine of the present invention, the force (lifter pressure) when the urging member pushes up the lifter plate is formed as a reaction from the cam roller to the ring shape. When the cam roller is on the thin portion of the ring-shaped cam, the thin portion bends and deforms due to lifter pressure applied from the cam roller. Since the amount of deformation of the thin portion corresponds to the lifter pressure applied by the cam roller, the amount of deformation of the thin portion is detected by a strain gauge, thereby eliminating the need for a difficult-to-handle force gauge. enables measurement of pressure, also simply rotates the designated position by mounting a dummy cans between the chuck and the lifter plate
In order good, narrow spaces cumbersome it is unnecessary for that force gauge and spacers detachable in between the chuck and the lifter plate, it is possible to shorten the adjustment time.

Claims (1)

[Claims] A ring-shaped cam having a low surface portion and a high surface portion; a lifter having a lifter plate on an upper portion and rotating while contacting an upper surface of the ring-shaped cam via a cam roller; And a chuck that is positioned at the same position as the lifter and rotates in synchronization with the lifter. The can lifter and the chuck sandwich the can body and the can lid and wind the can lid around the can body. A male screw integrally formed with the lifter plate; an adjustment ring nut screwed into the male screw and rotated relative to the lifter plate; and an adjustment ring nut capable of moving vertically relative to the lifter plate; And a support member interposed between the adjustment ring nut and the support member, and the lifter plate is moved upward according to the vertical position of the adjustment ring nut with respect to the lifter plate. A thin portion formed on an upper surface of a part of a high surface portion of the ring-shaped cam; and a strain gauge attached to a lower surface of the thin portion to detect deformation of the thin portion. And a force meter for calculating and displaying the lifter pressure based on the detection result of the strain gauge.