JPH0248103Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a can lid tightening machine for caulking and sealing a can lid fitted over an opening of a can body.

[Conventional technology]

As conventional examples of this type of lid tightening machine for canning cans, there are three types as shown below.

First, in the first conventional example, a can body and a can lid fitted into an opening of the can body are vertically crimped, and the can body is rotated by manual operation of a handle. At the same time, the swing arm is rotated, and the first seam roller attached to the swing arm is gradually brought into pressure contact with the peripheral end of the can lid, thereby performing the first stage of caulking.

Next, the handle is rotated in the opposite direction to move the first seam roller on the swing arm away from the can body, and the second seam roller attached to the swing arm is gradually brought into pressure contact with the peripheral edge of the can lid. It is configured to perform two stages of finishing caulking (Japanese Utility Model Publication No. 157047/1983).

In the second conventional example, after the upper dome is fitted into the opening of the can, both are clamped under pressure between a lower rotary support plate and an upper rotary support plate, and the upper rotary support plate is closed. At the same time as the first handle is rotated manually, the sliding piece is moved forward by manual operation of the second handle, and the concave curved portion provided at the tip of the sliding piece is pressed against the outer circumferential edge of the upper dome. It was constructed so that the opening of the can could be caulked (in 1987).
−185340).

Furthermore, in the third conventional example, a can lid is fitted onto the opening of a case set on a rotatable pedestal and held down with a can lid holder, and the pedestal is raised by a manual lever mechanism to attach it to the can. Pressurize the can lid. Next, the operating shaft is operated manually or by power to rotate the can lid holder, and at the same time, the lid tightening mechanism having the fastener is moved forward intermittently, and the fastener is crimped against the can. It is constructed so that the lid can be caulked (see Utility Model Application No. 60-38635).

[The problem that the idea aims to solve]

However, in the first conventional example disclosed in Japanese Utility Model Application Publication No. 53-157047, the handle must be rotated in two directions, forward rotation direction and reverse rotation direction, during the lid tightening operation. The disadvantage was that it was very cumbersome to operate and reduced work efficiency.

In addition, in the second conventional example disclosed in Japanese Utility Model Application Publication No. 58-185340, a handle for rotating the can and an operation handle for a sliding piece for caulking the outer periphery of the upper cannula are provided separately. This makes it difficult to operate both handles in synchronization, and the sliding piece that caulks the outer periphery of the upper cannula is done by the touch of the operator operating the operating handle. There was a drawback that caulking was not done uniformly.

Furthermore, in the third conventional example disclosed in Japanese Utility Model Application Publication No. 60-38635, the rotation handle of the case and the manual lever mechanism of the pedestal for pressurizing the can cover against the case are separately provided. It was difficult to operate because of the

[Means to solve the problem]

The present invention was developed to solve the above-mentioned drawbacks of the conventional technology, and by operating a single handle, it is possible to press the can lid against the can body, rotate the can body, and press the can lid against the can body. The purpose is to provide a can lid tightening machine that can synchronize the operation of caulking can lids. a press disk of a can lid, a disk cam, an eccentric cam, and a disk cam arranged on the same axis as the turntable rotated by a handle shaft horizontally mounted so as to be rotatable; A plate cam that is biased in the direction of the cam and slides in the direction of the turntable to move the pivot shaft up and down by a cam surface having an inclined surface, and a pair of clamps that are biased in the direction of the eccentric cam by an eccentric cam. A lid tightening machine for canned goods is characterized in that it is constituted by a movable plate arranged in parallel so as to press and swage a forming roller to the outer periphery of a can lid.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in FIGS. 1 to 7. In addition, Fig. 1 is a front view showing the lid tightening machine for canned goods according to the present invention, Fig. 2 is a side view with a part of the lid tightening machine cut away, and Fig. 3 is a side view showing the canned lid tightening machine according to the present invention.
Figure 4 is a sectional view taken along the line - in Figure 1, Figure 5 is a partial sectional view taken along the line - in Figure 1, and Figure 6 shows the main parts of the lid tightening machine. The perspective view shown in FIG. 7A and FIG.

In the figure, reference numeral 1 denotes a base, at one end of which a fixed cylindrical body 2 with a low height stands upright, and at its upper end a movable cylindrical body 3 is attached so as to be able to move up and down. A turntable 5 on which the can body A is placed is rotatably attached to the upper end of the movable cylindrical body 3 via a bearing 4.

Further, an elevating body 6 is installed in the center hole of the movable cylindrical body 3 so as to be able to move up and down, and a compressed spring 7 is installed between the elevating body 6 and the movable cylindrical body 3.
A pivot shaft 8 is rotatably screwed into the axis of the elevating body 6, and the lower end of the pivot shaft 8 protrudes from the lower surface of the elevating body 6. For this reason,
The height of the turntable 5 in the vertical direction can be adjusted by rotating a pivot shaft 8.

A case box 9 stands upright at the other end of the base 1. A middle support plate 10 is fixed to the upper end of the case box 9, and a support 1 is fixed to the middle support plate 10.
An upper support plate 12 is fixed via 1.

A handle shaft 14 is rotatably supported horizontally on the middle support plate 10 via bearings 13 installed spaced apart in the front-rear direction in the drawing, and a handle 15 is detachably attached to the end of the handle shaft 14. mounted on.

A first worm 16 is fixed to the handle shaft 14 and meshes with a worm gear 18 fixed to a first driven shaft 17 rotatably provided between the middle support plate 10 and the upper support plate 12. ing.

A spur gear 19 is fixed coaxially with the worm gear 18, and meshes with a large spur gear 21 fixed to a main shaft 20 rotatably standing upright between the base 1 and the upper support plate 12. There is. In addition, the lower end of the main shaft 20 has a recess 22a on the periphery.
A disc cam 22 having a diameter is fixed.

A second worm 23 is fixed to the handle shaft 14, and a first driven shaft is rotatably mounted coaxially with the turntable 5 between the middle support plate 10 and the upper support plate 12. It meshes with a worm gear 25 fixed to 24. This driven shaft 24 has, on the back side of the middle support plate 10,
A pressing disk 26 of the can lid B is fixed.

Note that the pressing disk 26 and the main shaft 20
The number of rotations per unit time of the pressing disk 26 is set to be larger than that of the pressing disk 26 by the number of teeth of the gear.

27 is a prismatic plate cam with a trochanter 28 at one end.
is rotatably attached, and a flat part 2 is attached to the other end.
A cam surface 29 is formed which includes a cam surface 9a and an inclined surface 29b.

This plate cam 27 is slidably mounted on the base 1 on a line connecting the fixed cylindrical body 2 and the main shaft 20, and the trochanter 28 of the plate cam 27 is fixed to the main shaft 20. The cam surface 2 of the plate cam 27 comes into contact with the peripheral edge of the disk cam 22.
9 is in contact with the semicircular portion of the pivot shaft 8. Further, the plate cam 27 has a spring 31 tensioned between the base 1 and both ends of a plate 30 fixed to the upper end thereof in a cross shape, so that the trochanter 28 is moved to the disk cam 27.
It is urged so that it is pressed against the periphery of 2.

Before starting the lid tightening work, the trochanter 28 of the plate cam 27 is in contact with the recess 22a of the disc cam 22, and the pivot shaft 8 is in contact with the flat part 29a of the cam surface 29 of the plate cam 27. are in contact. In this state, as shown in FIG.
It has been matched to

Reference numeral 34 denotes an eccentric cam, which is fixed to the main shaft 20 on the back side of the middle support plate 10. In addition, on the back side of the same middle support plate 10, a pair of movable plates 35, 35 formed in the same shape are located at left and right positions with the axis connecting the main shaft 20 and the second driven shaft 24 as an axis of line symmetry. It is located.

Both movable plates 35, 35 have bolts 37 planted on the back side of the middle support plate 10 inserted into their elongated holes 36.
By pressing with the holding plate 38, the eccentric cam 3
4 and the pressing disk 26. Furthermore, rotors 39 are rotatably attached to the inner sides of the central portions of both movable plates 35, 35, respectively, so as to come into contact with the peripheral edge of the eccentric cam 34. Further, fastening rollers 40, 40 of the same shape are rotatably attached to the tips of the movable plates 35, 35, respectively, and contact the outer periphery of the pressing disk 26. has a concave groove 40a (seventh
(see figure) is formed. The above-mentioned movable plates 35, 35 are biased in the direction of the eccentric cam 34 by a spring 41 stretched between the movable plates and the middle support plate 10, and the trochanters of the movable plates 35, 35 are 39 is pressed against the peripheral edge of the eccentric cam 34.

[Effect]

First, after fitting the can lid B into the opening of the can body A placed on the turntable 5, when the handle shaft 14 is rotated in a predetermined direction by the handle 15, the first worm 16 of the handle shaft 14 is rotated into the first position. Driven shaft 1
A large spur gear 21 fixed to the main shaft 20 is rotated via a worm gear 18 and a spur gear 19 of No. 7, and a disc cam 22 fixed to the lower end of the main shaft 20 is rotated.

When the disc cam 22 rotates, the trochanter 28 of the disc cam 27 is pushed out of the recess 22a of the disc cam 22 and rolls on the periphery, so that the disc cam 27 is rotated by the spring 3.
It slides in the direction of the turntable 5 against the elastic force of 1.

Therefore, the flat portion 2 of the cam surface 29 of the plate cam 27
Since the pivot shaft 8 located at 9a slides on the inclined surface 29b, the turntable 5 moves along the movable cylindrical body 3.
As it rises through the can body A, the spring 7 interposed between the movable cylindrical body 3 and the elevating body 6 is compressed, so that the can lid B is strongly pressed against the opening of the can body A due to its restoring force. be done. At the same time, the second
The worm 23 is the worm gear 2 of the second driven shaft 24
5, the can body A and the can lid B rotate while being pressed together by the pressing disk 26 fixed to the lower end of the second driven shaft 24.

On the other hand, due to the rotation of the main shaft 20,
Both movable plates 35, 35 slide in the direction of the pressing disk 26 against the elastic force of the spring 41 via the eccentric cam 34 and the rotor 39 of the movable plates 35, 35.

Therefore, the pair of fastening rollers 40, 40 at the tips of the movable plates 35, 35 are gradually pressed against the outer periphery of the can lid B, and the can lid is attached to the periphery of the opening of the can body A by the groove 40a. Roll up the outer periphery of B and swage it. At this time, the radius of the eccentric cam 34 gradually increases until it rotates 3/4, so the pressing force of the tightening rollers 40, 40 against the outer periphery of the can lid B gradually increases. Since the parts are pressed together by the two tightening rollers 40, 40, the caulking is performed reliably and uniformly.

When the eccentric cam 34 rotates once, the mark 32 on the upper surface of the main shaft 20 again aligns with the reference portion 33 of the upper support plate 12, and the trochanter 28 of the plate cam 27 aligns with the spring 31.
The restoring force restores the disc cam 22 to its position in the recess 22a. Therefore, the turntable 5 descends, and the can lid B sealed on the can body A is pushed against the pressing disc 26.
Since the can body A is separated from the turntable 5, the can body A can be easily taken out from the turntable 5.

As described above, sealing of the can lid B to the can body A is completed by just one rotation of the main shaft 20.

[Effect of idea]

As mentioned above, the lid tightening machine for canned goods according to the present invention has the following features:
a turntable on which a can body is placed, which is movable up and down and has a pivot shaft at the lower end; a press disk for a can lid, which is arranged coaxially with the turntable, which is rotated by a handle shaft that is rotatably mounted horizontally; A disc cam, an eccentric cam, a disc cam that is biased in the direction of the disc cam, slides in the direction of the turntable, and moves the pivot shaft up and down with a cam surface having an inclined surface, and an eccentric cam. It consists of a movable plate arranged in parallel so that a pair of tightening rollers, which are urged in the direction of the eccentric cam by the cam, are crimped and caulked to the outer periphery of the can lid, so that the plate cam can be attached simply by rotating the handle shaft. The cam surface allows the can lid to firmly fit into the opening of the can body set between the turntable and the pressing disc, and the pressing disc also allows the can body and the can lid to be firmly fitted. Can be rotated under pressure.

At the same time, the eccentric cam causes the pair of movable plates to slide in the direction of the pressing disc against the elastic force of the spring, so that the tightening roller gradually presses against the outer periphery of the can lid B and wraps around the outer periphery to swage it. wear.

As a result, cans can be sealed easily and quickly, and work efficiency is improved. Additionally, the outer periphery of the can lid is caulked mechanically and
Since the sealing is performed using individual tightening rollers, there are various effects such as uniform and strong sealing of cans.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a lid tightening machine for canned goods according to the present invention, Fig. 2 is a side view with a part of the lid tightening machine cut away, and Fig. 3 is a cross-sectional view taken along the line - - of Fig. 1. Figure 4 is a sectional view taken along the - line in Figure 1, and Figure 5 is a - line sectional view in Figure 1.
A line sectional view, FIG. 6 is a perspective view showing the main parts of the lid tightening machine, and FIGS. 7A and 7B are enlarged views of the main parts showing the can sealing state by the lid tightening machine. 5...Turntable, 7...Spring, 8...Pivot shaft, 14...Handle shaft, 15...Handle, 20...Main shaft, 22...Disc cam, 22a...Recess, 26...Press Disc, 27...
... Plate cam, 29a ... Inclined surface, 34 ... Eccentric cam, 35 ... Movable plate, 40 ... Tightening roller, 41
...Spring, A...Can body, B...Can lid.

Claims (1)

[Scope of utility model registration request] a turntable on which a can body is placed, which is movable up and down and has a pivot shaft at the lower end; a press disk for a can lid, which is arranged coaxially with the turntable, which is rotated by a handle shaft that is rotatably mounted horizontally; A disc cam, an eccentric cam, a disc cam that is biased in the direction of the disc cam, slides in the direction of the turntable, and moves the pivot shaft up and down with a cam surface having an inclined surface, and an eccentric cam. A can lid tightening machine comprising a pair of tightening rollers urged in the direction of the eccentric cam by a cam and a movable plate arranged in parallel so as to press and caulk the outer periphery of a can lid. .