JPS59191533A - Device for binding metallic pull ring to vessel cap simultaneously with forming ring - Google Patents

Abstract

PURPOSE:To provide a titled device which forms and binds quickly and surely pull rings by the constitution in which preforms and vessel caps are set to units for forming and binding the pull rings and the pull rings are curled and bound by a mandrel, curling tool, etc. CONSTITUTION:Plural units 52 for forming and binding pull rings are provided around a rotary support 28 which is continuously driven to rotate around a static supporting shaft 22 in a means 16 for forming and binding pull rings. The preform supplied in a receiving region for the preform is held by a freely vertically movable mandrel member 102 and lower mandrel member 130 in said unit 52. The free end of the tear-off tab of a vessel cap supplied in a receiving region for the vessel cap is pressed to the preform fixed by said mandrel and is pressed by a hammering means 140 so that both are formed to the same curvature. The preform is curled to a ring by the cooperation of an upper curling tool 98 and a lower curling tool 136 and at the same time the free end of the tear-off tab of the vessel cap is curled by which both are bound.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for forming and simultaneously bonding a metal tension ring to a container lid.

[Prior art and its problems]

Recently, container lids have become popular in which a tear-weakening line is provided on the container lid body that extends from the tear-off tab protruding from the skirt of the container lid all the way to the top surface, and can be easily opened by pulling the tear-off tab. There is. When opening this type of container lid, it is necessary to apply a considerable amount of force to pull up the tear-off tab, so measures are taken to make the tear-off tab long and attach an appropriate grip to make opening easier. It is being However, these measures have the disadvantage that a lot of waste occurs when the container lid is preformed from sheet metal, resulting in an increased cost of the container lid.

In addition, many methods have been proposed in which the gripping piece is constructed separately and connected to the tear-off tab by means such as full gluing, riveting, or clamping, but these methods require a lot of effort and time during the process. In short, the connection part is fragile, and failures such as disconnection occur easily before the package is opened, and the manufacturing cost increases significantly.

In order to overcome this problem, a strip of metal is cut from the end of the thin metal plate and simultaneously curved to form a cylindrical plate with both ends overlapped, so that the free end of the tear-off tab of the container lid and the cylindrical plate are overlapped. The container lid and the cylindrical plate are positioned so that a portion of the cylindrical plate overlaps with the other, and the circumferential edge of the cylindrical plate is curled in the radial direction to form a ring, and the tear-off sheet is rolled into the ring. By combining the two, a method and device for manufacturing a container lid with a metal tension ring that can be mass-produced at low cost was developed and a patent application was filed by Guikanders of Sweden. 58-13
No. 855 and Japanese Patent Application No. 13856/1983).

That is, this type of metal container lid with tension ring is constructed as shown in FIG. 1, for example.

Continuous forming of this container lid is carried out by (1) a pre-formed body forming means that cuts the strip-shaped metal thin plate and forms a cylindrical plate-shaped pre-formed body; and (2) moves the pre-formed body to a position where the pre-formed body is joined to the container lid tag piece. A means for supplying a pre-formed body; (1) a means for supplying a container lid; and (2) a tension-forming and joining means for forming a pre-formed body abutted against a container lid tag piece into a tension ring and simultaneously joining this to a container lid. This can be easily achieved with the basically constructed equipment.

In this case, in order to obtain a metal tension container lid with stable quality at low cost, a cylindrical plate-shaped pre-formed body is formed at a sufficiently high speed, and this pre-formed body is stretched against a container lid tag piece. It is required that the molding be performed at a sufficiently high speed and that the bonding be sufficiently strong.

[Purpose of the invention]

In order to satisfy the above-mentioned requirements, an object of the present invention is to provide a forming and joining apparatus for a container lid with a metal tensioning ring having the above-mentioned structure, which includes: An object of the present invention is to improve a tension ring forming and joining means which receives container lids each having a tear-off tap and butts them against each other to form and connect the tension rings.

[Key points of the invention]

The present invention provides means for shearing and simultaneously bending strips along the ends of a thin metal sheet to form a cylindrical plate-like preformed body with overlapping ends, and a means for shearing and simultaneously bending strips along the ends of a thin metal sheet, and a means for forming a preformed body in the form of a cylindrical plate with overlapping ends, and a means for shearing and simultaneously bending strips along the ends of a thin metal sheet, and a means for forming a preformed body in the form of a cylindrical plate with overlapping ends, and a means for shearing and simultaneously bending strips along the ends of a thin metal sheet. Positioning the container lid and the pre-formed body so that they overlap each other from a portion of the molded body, and curling the peripheral edge of the pre-formed body in a radial direction to form a ring. In the apparatus for forming a metal tension ring and simultaneously connecting it to a container lid, the tension ring and the connection means are configured to form a metal tension ring and connect it to a container lid at the same time.
a rotary support that is continuously driven to rotate; and a plurality of tension ring forming and coupling units provided on the rotary support at predetermined intervals in the circumferential direction, the tension ring being rotated by rotation of the rotary support. Each of the forming and joining units is conveyed sequentially through a preforming pot receiving area, a container lid tag piece, and a rolling area, and the preforming body is supplied to the stretching forming and combining unit at the preforming pot receiving area. The container lid is supplied to the tension forming and joining unit in the container lid receiving area, and the curling and rolling joining are performed in the rolling area.

[Embodiments of the invention]

Next, embodiments of the device according to the present invention will be described in detail below with reference to the accompanying drawings.

Without further ado, the overall basic structure of the apparatus for forming and joining metal tensioning in a container lid according to the present invention will be explained with reference to FIG. That is, the apparatus of the present invention includes a preform forming means 10, a preform supplying means 12, a container lid supplying means 14, a tension forming and joining means 16,
A container lid transfer means 18 and a bond reinforcing means 20 are included. The functions and operations of each of these means are outlined as follows.

The pre-formed body forming means 10 is a recess formed by cutting a strip of metal thin plate made of chromic acid treated steel, tinplate, aluminum alloy, etc. and simultaneously bending it in the longitudinal direction so that both ends overlap each other. A ring-shaped preformed body is formed.

Next, the preformed body supplying means 12 supplies the preformed body forming means 10
Receive the preformed body formed by the holding areas A and B,
It is transported in the direction of the arrow and taken out to the preformed pot receiving area C. on the other hand,
The container lid supply means 14 receives the container lid in the holding area, conveys it in the direction of the arrow, and carries it out to the container lid receiving area E. The tension ring forming and joining means 16 receives the molded body @1 from the preformed body supplying means 12 in the preformed pot receiving area C, conveys it in the direction of the arrow, and then supplies the container lid in the container lid receiving area E. Means 1
4, the container lid and the preform are positioned so that the container lid tag piece and a part of the preform can overlap with each other, and then the peripheral edge of the preform is curved in the curved area F. A force IJ is applied in the direction to form a ring, and at the same time, the container lid tab piece is rolled into this ring in the tension forming and joining area G to join them together, and then transported to the discharge area H.

Furthermore, the container lid transfer means 18 transports the container lid to which the tension ring has been joined from the tension ring forming and joining means 16 to the receiving area 9 in the direction of the arrow, and carries it out to the transport area (2). Then, the bond reinforcing means 2 C1 receives the container lid to which the tension ring is bonded from the container lid transfer means 18 in the transfer area (3), transports it in the direction of the arrow, and tightens it with the container lid tab piece in the pressurized deformation area J. After applying pressure deformation to the mutually wrapped joint with a part of the joint to strengthen the joint,
(see Figure 1) and transported to the delivery area.

Next, an embodiment of the tension forming and joining means which is the main part of the apparatus of the present invention will be described with reference to FIGS. 6 to 12.

Stretch forming and joining means 16 in the apparatus of the invention 2
As shown in FIG.
A rotary support 28 is rotatably mounted via 4.26.

The rotary support body 28 has a large input gear 30 fixed to its lower end, is connected to an appropriate drive source via the gear 60, and is configured to be continuously driven to rotate in a predetermined direction.

A first annular cam block 62 is fixed to the upper end of the support shaft 22. This first annular cam block 6
An annular cam groove 34 is provided on the outer peripheral surface of the second cylindrical hanging portion. Further, a second annular cam block 66 is fixed to the outer periphery of the upper end of the first annular cam block 62, and an annular cam groove 38 is provided on the outer circumferential surface of the second annular cam block 3B. ing.

The tension forming and coupling means 16 of this embodiment is further provided with an annular stationary support plate 40 around the lower end of the rotary support 28 at a predetermined distance. This support plate 40 is supported by support legs 42, and a sixth annular cam block 44 and a fourth annular cam block 46 are fixed to the upper surface thereof. Third annular cam 1:r
An annular cam #48 is provided on the outer peripheral surface of the hook 44, and a fourth
An annular cam groove 50 is provided on the outer peripheral surface of the annular cam block 46 .

Furthermore, a plurality of tension ring forming and coupling units 52 are disposed on the rotary support 28 at equal intervals in the circumferential direction. That is, the lower half of the rotation support body 28 is
It has a regular polygonal outer shape corresponding to the number of the tension forming and coupling units 52, and a tension forming and coupling unit 5 is provided on each outer surface 54 of the polygon.
2 are arranged. These tension-forming and joining units 52 are each provided with a support member 58 fixed by a set screw 56 on each outer side 54 of the rotary support 2 . As shown in FIGS. 4 and 5, the support member 58 has an upper portion 600 that is larger in radial dimension than a lower half portion 62, and the upper half portion 60 is larger than the lower half portion 62 in the radial direction. Projects beyond the exterior. As shown in FIG. 4, the radially outer portion of the upper portion 600 that projects beyond the radially outer surface of the lower half portion 620 of the support member 58 includes:
A rectangular cross-section 464 is provided that extends vertically therethrough. This groove 64 is open radially outward in the upper half 60 of the support member 58 itself, and is provided on the radially outer surface of the upper half 60 of the support member 58 by a set screw 66. This outer member 6 is fixed in place.
8 covers the radially outer surface of the groove 64. moreover,
The support member 58 includes a groove 70 extending vertically through the radially inner portion of the upper half 60 and through the lower half 62.
is provided. This groove 70 has a somewhat smaller rectangular cross-section than the rectangular cross-section of said groove 64 and continues directly into said groove 64 radially in the upper half 60 of the support member 58 and radially in the lower half 62. It is open to the outside.

Further, in the upper half 60 of the support member 58, the width of the support member 5 from this groove 70 is the same as that of the groove 70 except for the upper end.
A groove 72 is provided extending to the radially inner end of 8. Therefore, in the upper half 60, except for its upper end.

Support member 58 is continuously open from its radially outer end to its radially outer end by grooves 72, 70 and 64iC. On the other hand, as shown in FIGS. 6 and 5, at the lower end of the lower half 62 of the support member 58, the lower half 62
An outer member 76 is fixed to the radially outer surface of the groove 70 by a set screw 74, and this outer member 76 covers the radially outer surface of the groove 70.

In FIG. 6, a square column 78 having a rectangular cross section corresponding to the cross-sectional shape of the groove 64 is attached to a groove 64 provided in the upper half 60 of the support member 58 so as to be slidable in the vertical direction. A prism 86 is fixed to the lower end of this prism 78 via two plate members 82 and 84'i which sandwich a countersunk 80. This prism 86 is provided with a hole 88 that is open downward and has a circular cross section, and a hole 90 that extends upward from the upper end of this hole 88 through the prism 86 and has a diameter somewhat smaller than that of the hole 88 is provided. It is being Further, the disc spring 80 and the two plate members 82 and 84 that sandwich it are also provided with a through hole 92 that aligns with the hole 90. And the prism 86
A set screw 94, the head of which is located at the upper end of the hole 88 provided in the hole 88, is inserted through the hole 90.
It is screwed into a screw hole 96 formed at the lower end of the prism 78, thereby fixing the prism 86 and the two plate members 82 and 84 holding the disc spring 80 between them at the lower end of the prism 78. Belleville spring 8
The two plate members 82 and 84 holding 0 between them and the square pillar 86 have the same cross-sectional outline as the square pillar 78, and the square pillar 78 has the same cross-sectional outline as the square pillar 78.
8 in the groove 64 in the vertical direction.

Further, the upper end of an annular upper winding tool 98 is fixed to the lower end of the hole 88 provided in the square column 78.

That is, the upper end of the upper winding tool 98 is brought into contact with the shoulder formed on the inner surface of the hole 88, and the stop member 100, which comes into contact with the shoulder formed on the outer peripheral surface of the upper winding tool 98, is connected to a square column. By fixing it to the lower end of 86,
The upper end of the upper winding tool 9 is fixed to the lower end of the hole 88 . An upper mandrel member 102 is mounted within the upper winding tool 98 so as to be slidable in the vertical direction. A spring member 104 is interposed between the upper end of the upper mandrel member 102 and the head of the set screw 94 to elastically bias the upper mandrel member 102 downward in the vertical direction.

The vertical movement of the upper mandrel member 102 is as follows:
The lower surface of the 7 flange formed at the upper end thereof is limited by abutting against the upper end surface of the upper winding tool 9B. The upper mandrel member 102 is provided with a vertically extending slot 106 in which a horizontal pin 108 extends through the upper winding tool 98 and is secured to the prism 86 at both ends. It is inserted.

Horizontal pin 108 connects to square post 86 and upper winding tool 98
The upper mandrel member 102 is allowed to move vertically upward over a predetermined range relative to the rectangular column 86 against the elastic biasing action of the spring member 104, and the upper winding tool 98 and Upper mandrel member 102
to prevent them from rotating relative to each other about a central axis extending in the vertical direction. On the other hand, a horizontally extending shaft 110 is fixed to the upper end of the prism 78.
The first annular cam block 6 marked 011 is attached to the inner protruding end of 0.
A driven roller 112 housed in an annular cam 64 provided at 2 is rotatably mounted. In this way,
When the rotating support body 28 rotates in a predetermined direction, the prism 78,
Therefore, it will be understood that the upper winding tool 98 and the upper mandrel member 102 located at the lower ends move up and down in the vertical direction according to the locus defined by the annular cam groove 34.

In FIGS. 6, 4 and 6, the outer member 6 is fixed to the radially outer surface of the upper half 60 of the support member 58.
A pair of guide members 114 extending in the vertical direction are fixed to the outer surface of the guide member 8 at a predetermined distance in the lateral direction, and a guide groove 11 extending in the vertical direction is fixed between the pair of guide members 114
6 is set. An elongated sliding plate 118 is attached to this guide 'm116 so as to be slidable in the vertical direction. On the inner surface of the lower end of the sliding plate 118 that protrudes downward beyond the lower ends of the outer member 68 and the pair of guide members 114,
A presser member 120 made of a flexible material such as synthetic rubber is joined. On the other hand, a plate member 122 extending further vertically upward is fixed to the outer surface of the upper end of the sliding plate 118, and a shaft 124 extending horizontally is fixed to the upper end of this plate member 122. has been done. And this axis 1
A driven roller 126 accommodated in an annular cam groove 38 provided in the second annular cam block 36 is rotatably mounted on the inner protruding end of the second annular cam block 36 . In this way, when the one-turn support body 28 rotates in a predetermined direction, the sliding plate 1
18 is understood to move up and down in the vertical direction according to a locus defined by the annular cam groove 38.

In FIGS. 3 and 5, the lower half 6 of the support member 58
The outer member 76 fixed to the radially outer surface of the outer member 2 is provided with a hole 128 having a circular cross section and passing through in the vertical direction.

In this hole 128, a lower mandrel member 160 whose main portion except the upper end and the lower end has a circular cross section corresponding to the circular cross section of the hole 128 is installed. Although it cannot rotate about its axis, it can slide in the vertical direction. It is attached freely. The lower end of the lower mandrel member 130 is.

A horizontally extending shaft 162 is fixed to the protrusion, which protrudes downward beyond the lower end of the outer member 76. The outer protruding end of this shaft 162 has the fourth
A driven roller 164 accommodated in an annular cam groove 50 provided in an annular cam block A6 is rotatably mounted. In this way, when the rotary support 28 rotates in a predetermined direction, the lower mandrel member 160
It will be understood that the robot moves up and down in the vertical direction according to a trajectory defined by the following. In addition, this lower mandrel member 16
0 is vertically aligned with and cooperates with the upper mandrel member 102 . An annular lower winding tool 166 is fixed to the upper surface of the outer member 76. That is, the lower winding tool 166 located around the hole 128 and therefore around the lower mandrel member 160 is similar to the upper winding tool 98.
The upper winding tool 9 is positioned in vertical alignment with the
Collaborate with 8. Furthermore, the outer member 76 has a container lid receiving pocket 16 at the upper end of its outer surface that receives a container lid.
8 is provided.

In FIG. 6, tension ring forming and joining unit 5
2 is equipped with hammer means 140.

That is, this hammer means 140 is pivotally connected to a pin 144 fixed at both ends to the prism 78 and extending in the vertical direction in FIG. has been done. An abbreviated arm 146 is rotatably attached to this pin 144, and the tip of this arm 146 passes through an opening 148 provided in the outer member 68 and an opening 150 provided in the sliding plate 118. It protrudes outward (see Figure 6).

Furthermore, a connecting member 152 further protruding from the tip of the arm 146 is fixed by a set screw 154, and a trimming tool 156 is attached to this connecting member 152. In this case, the hammer tool 156 is attached to the connecting member 152 as follows. A through hole is provided at the tip of the connecting member 152, and a connecting rod 158 having screws at both ends extends through the through hole.

One end of this connecting rod 158 is screwed into the hammer tool 156, and the other end protruding beyond the outer surface of the connecting member 152 is screwed with a locking nut 160, so that the hammer tool 156 is attached to the connecting member 152. . A recess is provided in the mutually opposing surfaces of the connecting member 152 and the hammer tool 156, and
In the space defined by this recess, the connecting rod 15
A plurality of plate springs 162 having a diameter 8 passing through them are accommodated.

This countersunk 162 is connected to the hammer tool 156 as described later.
It elastically cushions the impact when the tip hits the protruding end of the tear-off tab piece of the container lid and pressurizes it. On the other hand, the rear end of the arm 146 is connected to the groove 7o provided in the support member 58.
, 72.

A connecting lever 164 is attached to the rear end of the arm 146.
One end is rotatably connected. Connection lever 164
The other end is pivotally connected to the upper end of a sliding lever 166. As shown in FIGS. 6 and 5, this sliding lever 164 is mounted in a groove 70 provided in the support member 58 so as to be slidable in the vertical direction. That is, the lower end of the sliding lever 164 protrudes downward beyond the lower end of the support member 58, and a horizontally extending shaft 168 is fixed thereto, and the sixth shaft 168 is attached to the inner projecting end of the shaft 168. A driven roller 170 accommodated in an annular cam groove 48 provided in an annular cam block 44 is rotatably mounted. It will be appreciated that in this way, when the rotary support 28 rotates in a predetermined direction, the sliding lever 166 moves up and down in the vertical direction according to the locus f'L defined by the annular cam groove 48. In this case, when the sliding lever 166 is raised, the arm 146 turns counterclockwise around the pin 144, and conversely, when the sliding lever 166 is lowered, the arm 146 turns clockwise around the pin 144. Turn (
(See Figure 3). Note that when the sliding lever 166 rises and the arm 146 turns counterclockwise around the pin 144, the tip of the cutting tool 156 passes through the opening 172 provided at the lower end of the sliding plate 118. (see Figure 6) acts on the free end of the tab piece (see Figure 6).

FIG. 7 shows the square column 78 (the upper winding tool 98 and the upper mandrel member 102 attached thereto) in the tension forming and joining unit 52 that moves up and down when the rotary support 28 rotates once as described above. )and,
It shows the loci of the lower mandrel member 130, the sliding plate 118, and the sliding lever 166 of the nozzle means 140, respectively, moving up and down. In addition, the rotation angle 0 shown in Fig. 7
degrees and 360 degrees correspond to the preform receiving C of the tension forming and joining means 16 shown in FIG.

The operation of the tension ring forming and coupling unit 52 will now be described with reference to FIG. 8 in conjunction with FIG.

In FIG. 8, a holder 174 of the preform supply means 12
At the same time that the pre-formed body 176 held at the tips of 174a and 174b reaches the pre-formed body receiving C, the upper mandrel member 102 and the lower mandrel member 160 constituting the tension forming and joining unit 52 are removed. The central axis reaches the preformed body receiving C. In this case, the preformed body receiving C
Also, in the upstream N, there is a sufficient distance between the lower end of the upper mandrel member 102 and the upper end of the lower mandrel member 160, and the lower end of the upper mandrel part 102 and the upper end of the lower mandrel member 130 are held, respectively. Ingredients 1
The preformed body 176 being conveyed to the preformed body receiving C by 74a or 174b is also located above or below. The upper mandrel member 102, as shown in FIG. It has a columnar main portion 182 and a substantially conical upper end 184 that gradually tapers upward. The outer diameter of the main portion 178 of the upper mandrel member 102 and the outer diameter of the main portion 182 of the lower mandrel member 160 are substantially the same. Furthermore, the upper mandrel member 102
The lower end 180 of the lower mandrel member 130 and the upper end 1 of the lower mandrel member 130
84 are provided with complementary notches 186, 188, each fully accommodating the other; lower end 180 of upper mandrel member 102 and lower mandrel member 160.
When fully assembled with the upper end 184, the main portion 178 of the upper mandrel member 102, as shown at the left end in FIG.
and the main portion 182 of the lower mandrel member 130 come into contact with each other, thereby forming a substantially continuous cylindrical vertical mandrel 190.

However, as is clear from FIG. 7, when the upper mandrel member 102 and the lower mandrel member 160 turn in the direction of the arrow from the position shown by the solid line in FIG. 8 and reach the preformed body receiving C.

The prism 78 is lowered, the upper mandrel member 102 is lowered, and the lower mandrel member 130 is raised.
As shown, the lower end 1 of the upper mandrel member 102
80 and the upper end 184 of the lower mandrel member 130 are respectively inserted from above and below into the preformed body 176 which has reached the preformed pot receiving area C in synchronization, and are partially assembled with each other. Next, the holder 17 is removed from the preformed pot receiving area C.
4a, 174b pivot in the direction of the arrow, and upper mandrel member 102 and lower mandrel member 160 pivot in the direction of the arrow. Therefore, at this time, the holders 174a, 1
74b, the upper mandrel member 102, and the lower mandrel member 160 gradually move away from each other, but at this time, the preformed body 1
76 exists around the lower end 180 of the upper mandrel member 102 and the upper end 184 of the lower mandrel member 160 that are partially assembled with each other, so that the preformed body 17
For example, a holder 174a that magnetically attracts and holds 6
, detached from the tip of 174b and upper mandrel member 1
02 and is received by the lower mandrel member 160. When the upper mandrel member 102 turns from the pre-formed pot receiving area C in the direction of the arrow, the prism 78 further descends a little, lowering the upper mandrel member 102 a little further, and the lower mandrel member 160 further descends a little. The lower end 180 of the upper mandrel member 102 and the upper end 18 of the lower mandrel member 160 rise as shown at the left end of FIG.
4 are fully assembled to form a substantially continuous cylindrical vertical mandrel 190, and the preform 176 is fitted around this vertical mandrel 190.

As described above, after the preform 176 is delivered from the preform supply means 12 to the vertical mandrel 190 of the tensile ring forming and bonding unit 52, the tensile ring forming and bonding unit 52 continues to rotate, and the preform pot Receiving area C
When it reaches the angular position of approximately 25 degrees from the angle, the prism 78 starts to further descend as is clear from FIG. 7, and the preformed pot receiving area C
The lowering of the prism 78 is maintained until the angular position is approximately 45 degrees. When the prism 78 is lowered, the upper mandrel member 102 can be lowered because its lower end 180 is fully engaged with the upper end 184 of the lower mandrel member 160 that is not raised or lowered, and therefore the elasticity of the spring member 104 is It rises relative to the prism 78 against the biasing action. On the other hand, the upper winding tool 98 descends together with the prism 78, and the inner peripheral edge of the lower surface of the upper winding tool 98 comes into contact with the upper edge of the preformed body 176 fitted into the vertical mandrel 190,
The preform 176 is lowered along a vertical mandrel 190. When the upper winding tool 98 descends to a predetermined position,
As a result, the lower edge of the preformed body 176 that has descended comes into contact with the inner peripheral edge of the upper surface of the lower winding tool 136, and at this point, the lowering of the upper winding tool 98 is completed. Therefore, the preformed body 176 is not substantially deformed between the upper winding tool 98 and the lower winding tool 136 due to the downward pressure of the upper winding tool 98 .

The tension forming and joining unit 52 is then approximately 2
When turning over an angular range of 0 degrees, that is, when turning from an angular position of approximately 45 degrees to an angular position of approximately 65 degrees when viewed from the preformed pot receiving area C, the prism 78 rises, and The upper winding tool 98 is also returned to its original position. At this time, the upper mandrel member 102 descends relative to the prism 78 due to the elastic biasing action of the spring member 104, but does not rise or fall relative to the lower mandrel member 160. Furthermore, the preformed body 176 that has descended to a position where its lower edge abuts the inner peripheral edge of the upper surface of the lower winding tool 166 is maintained at that position without rising along with the upper winding tool 98.

When the tension forming and joining unit 52 continues to rotate further and reaches an angular position of approximately 80 degrees from the pre-formed pot receiving area C, the tension forming and joining unit 52
As shown in FIG. 2, the container lid receiving area E is reached. and,
In this container lid receiving area E, the container lid 192 conveyed by the container lid supply means 14 is delivered to the container lid receiving pocket 168 provided at the upper end of the outer surface of the outer member 76 in the stretching forming and joining unit 52. . That is, the container lid receiving pocket 138 is provided at the upper end of the outer surface of the outer member 76 of the tension ring forming and coupling unit 52, as shown in FIG. The pocket 138 has a generally circular shape that corresponds to the outer shape of the skirt wall 194 of the container lid 192, and its radial depth is approximately half the height of the skirt wall 194.

A groove 196 extending circumferentially is provided in the outer member 76 at a substantially intermediate portion in the vertical direction of the pocket 168 . This groove 196 continues to the pocket 168
The radial depth of the pocket 168 is also set to be considerably larger than the radial depth of the pocket 168. On the other hand, the tension forming and coupling means 16 are provided with stationary guide rails 198 that extend along the path of movement of the outer member 76. This stationary guide rail 198 is supported by support legs (not shown) and extends from the container lid receiving area E to the container lid discharging area H when viewed in the direction of the arrow of the tension forming and joining unit 52 (see FIG. 2). ].Inner surface 20 of stationary guide rail 198
0 is positioned at a predetermined spacing relative to the outer surface of the outer member 76, ie, approximately half the height of the skirt wall 194 of the container lid 192. However, when the tension forming and joining unit 52 reaches the container lid receiving area E,
In synchronization with this, a container lid receiving block (not shown) fixed to the outer periphery of a rotary conveyance board (not shown) in the container lid supply means 14 reaches the container lid receiving area E.

At this time, the outer surface of the outer member 76 in the tension forming and joining unit 52 and the outer surface of the container lid receiving block are close to each other and face each other.

A portion of the container lid 192 (ie, the lower end of the skirt wall 194), which is partially received in a pocket (not shown) of the container lid receiving block, is then inserted into the pocket 138 of the outer member 76. At this point, the downstream end of the stationary guide rail 202 disposed on the container lid supply means 14 is located deep in the groove 196 provided in the outer member 76 . The downstream end of the stationary guide rail 202 is connected to the tenth
As shown in the figure, it has a reduced thickness and height compared to the upstream portion, and is positioned deep within the groove 196. On the other hand, the upstream end of the stationary guide rail 198 disposed on the tension ring forming and coupling means 16 is positioned deep in a groove provided in the container lid receiving block (not shown). Therefore, when the outer member 76 is rotated in the direction of the arrow from the container lid receiving area E and the container lid receiving block is turned in the direction of the arrow from the container lid receiving area E, the outward tilting member 76 and the container lid receiving block are mutually When leaving, close the container lid 1.
92 is released from the restraint by the stationary guide rail 202 and removed from the pocket of the container lid receiving block, and is restrained by the stationary guide rail 198 to the pocket 168 of the outer member 76. In this manner, the container lid 192 received in the pocket 168 of the outer member 76 is
As shown in the figure, the top wall 204 is directed radially outward and the tear-off piece 206 is positioned at the top.

The tear-off tab piece 206 is located on the upper surface of the outer pusher 1 member 76. That is, the tear-off tab piece 206 has its base 20
8 extends radially inward along the outer member 76;
A free end 210 extends vertically upward from base 208.

Therefore, the free end 210 of the tear-off tab piece 206 is positioned superimposed on the outside of the radially outer portion of the preform 176 that is fitted onto the vertical mandrel 190 . Further, the boundary between the base 208 and the free end 210 of the tear-off piece 206 is
Since the protruding length of the free end 210 is somewhat smaller than the width of the preform 176, the edge of the free end 210 is located at approximately the same height as the lower edge of the preform 176. The upper edge of the holder is also positioned at a somewhat lower position. When the tension ring forming end and coupling unit 52 continues to rotate in the direction of the arrow and the outer member 76 is conveyed from the container lid receiving area E in the direction of the arrow, the pocket 1
The container lid 192 received by the container 68 is also conveyed together with the outer member 76 in the direction of the arrow. During this transportation, the container lid 192 is maintained in the above-described state with respect to the outer member 76. Furthermore, due to the centrifugal force acting on the container lid 192 due to the pivoting of the outer member 76 in the direction of the arrow, the container lid 192 tends to disengage radially outwardly from the pocket 168, but this is prevented by the stationary guide rail 198. blocked by.

While the tension ring forming and joining unit 52 pivots from the container lid receiving area E over an angular range of approximately 45 degrees in the direction of the arrow, the sliding plate 118 is lowered, as shown in FIG. By lowering the sliding plate 118, the sliding plate 118
It is positioned from the non-operative position shown in FIGS. 3 and 6 to the operative position shown in FIGS. 11 and 12. That is, in FIGS. 11 and 12, when the slide plate 118 is lowered to the operating position, the lower end of the slide plate 118 touches the container lid 192 housed in the pocket 138 of the outer member 76.
Beyond the top of the container lid 19
It is located opposite to the upper part of the top wall 204 of No. 2. As a result, the presser member 120 made of a flexible material such as synthetic rubber, which is joined to the inner surface of the lower end of the sliding plate 118, is pressed against the container lid 19.
It is pressed against the upper half of the outer surface of the top wall 204 of No. 2.

Further, as shown in FIG. 7, the sliding plate 118 that has been lowered to the operating position shown in FIGS. continues to be maintained in the working position until the angular position is reached. When the tension forming and joining unit 52 pivots over an angular range of approximately 60 degrees from this angular position, the sliding plate 118 rises to the position shown in FIGS. 11 and 12.
It is returned from the active position shown in the figure to the non-active position shown in FIGS. 3 and 6.

On the other hand, as shown in FIG. 7, when the tension forming and joining unit 52 passes through the curved area F (see FIG. 2), the sliding lever 166 of the 7177 means 140
It moves up and down in exactly the same way corresponding to the up and down movement of No. 8. Therefore,
The arm 146 of the arm 140 often pivots about the pin 144. However, while the tensile ring forming and bonding w knit 52 passes through the curved area F, the prism 78 is not raised or lowered, but the sliding lever 166 of the 7177 means 140 is raised and then lowered. That is, while the tension forming and joining unit 52 is pivoting from an angular position of approximately 100 degrees to an angular position of approximately 165 degrees when viewed from the preform pot receiving area C, the sliding lever 166 is raised and then the preform pot is rotated. While pivoting from an angular position of approximately 135 degrees to an angular position of approximately 170 degrees as viewed from the receiving area C, the sliding lever 166 descends to its original position. As can be seen by comparing FIGS. 6 and 11, when the slide lever 166 of the hammer means 140 is raised, the arm 146 is moved from the pin 14.
Turn counterclockwise around 4 (see Figure 6).

When the tension forming and joining unit 52 is at an angular position of approximately 165 degrees when viewed from the preform pot receiving area C, the arm 146 is pivoted to the position shown in FIGS. 11 and 12 by raising the sliding lever 166. . As a result, the tip of the hammer tool 156 attached to the tip of the arm 146 passes through the opening 172 provided at the lower end of the sliding plate 118 and protrudes inward in the radial direction.
The free end 210 of the tear-off strip 206 and the preform 176 are struck and pressed against the vertical mandrel 190. Therefore, the tip of the hammer tool 156, that is, the striking surface, is formed into an arcuate surface with a curvature corresponding to the curvature of the outer peripheral surface of the vertical mandrel 190. Therefore, due to the impact of the hammer tool 156, the free end 210 of the tear-off tab piece 206 of the container lid 192, which had been flat until then, has a curvature that is substantially the same as the curvature of the outer peripheral surface of the vertical mandrel 190. Therefore, it is curved in the width direction with substantially the same curvature as the curvature (longitudinal curvature) of the outer surface of the preformed body 176, and is sufficiently tightly overlapped with the outer surface of the preformed body 176 over the entire width direction.

Thereafter, the tension ring forming and joining unit 52 is moved from an angular position of about 135 degrees when viewed from the pre-formed pot receiving area C to about 17 degrees.
Swivel to the 0 degree angular position, during which time slide lever 166
When the arm 146 is lowered, the arm 146 pivots clockwise about the pin 144 (see FIG. 11), returning from the striking position shown in FIGS. 11 and 12 to the position shown in FIG.

After the tension forming and joining unit 52 passes through the curved area F, while passing through the tension forming and joining area G, that is, from an angular position of approximately 180 degrees when viewed from the preformed pot receiving area C, to approximately 210 degrees. (see FIG. 2), the preform 176 is formed into a tension ring by the cooperation of the upper winding tool 98 and the lower winding tool 166, and this tension container lid 1
92 and is connected to the free end 210 of the tear-off piece 206 (see FIG. 1).

That is, the upper edge of the preformed body 176 surrounds the free end 210 of the tear-off piece 206 when rolled up into a substantially arc shape, and as the upper edge of the preformed body 176 is rolled up, The free end 210 of the tear-off tab piece 206 is also rolled up. In this manner, the preform 176 is wound into a tension ring having a generally circular cross-sectional shape, and the tension ring is wound and connected to the free end 210 of the tear-off strip 206.

While the tension forming and joining unit 52 passes through the tension ring forming and joining area G and pivots from an angular position of approximately 210 degrees to an angular position of approximately 260 degrees when viewed from the pre-formed pot receiving area C, 2), as is clear from FIG. 7, the prism 78 is raised and the upper winding tool 98 is returned to the position shown in FIG. At the beginning of such a rise on the 7th day of the prism, the upper mandrel member 1 [ ) 2 is lower than the spring member 1
04 relative to the prism 78 due to the elastic biasing action of the upper mandrel member 102. is raised with the upper winding tool 98 in conjunction with the rise of the prism 78, and then disengages upwardly from the formed tensioning ring and returns to the position shown in FIG. Further, the tension forming and joining unit 52 is approximately 260 degrees from the angular position of approximately 210 degrees from the preformed pot receiving area C.
When pivoting to the angular position of the lower mandon
I60 is lowered and lower mandrel member 160 also disengages downwardly from the formed tensioning ring and returns to the position shown in FIG. In this way, the tension forming and joining unit 52 returns to the state shown in FIG. Note that the tension forming and joining unit 52 holds a container lid 192 to which a tension ring is connected.

The tension ring forming and joining unit 52 continues to pivot further and reaches the discharge area H when it reaches an angular position of approximately 280 degrees as viewed from the pre-form pot receiving area C (see FIG. 2).

Details of the configurations of the preformed body forming means 1Q, the preformed body supplying means 12, the container lid supplying means 14, the container lid transfer means 18, and the bonding reinforcement means 20 can be found in the respective patent applications filed on the same date as the present application. (t) , (21, (31, (
Since it is detailed in the specifications and drawings of 5), (6), and Q), the description thereof will be omitted in this specification since it appears in these specifications and drawings.

〔Effect of the invention〕

As is clear from the above, in the present invention, the preformed body continuously supplied from the preformed body supplying means and the container lid continuously supplied from the container lid supplying means are
It is possible to securely hold the tension ring at a predetermined timing and in a predetermined positional relationship, and to simultaneously form the tension ring and connect the tension ring to the container lid at high speed. Therefore, the container lid formed and joined in this manner is supplied to the joining reinforcing means via the container lid transfer means to apply pressure deformation of the joint between the tensioning ring and the container lid. It is possible to mass-produce container lids with metal tensioning rings that are inexpensive and have excellent strength.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a container lid with a metal tension ring manufactured by the apparatus of the present invention, FIG. 2 is a schematic explanatory diagram showing the manufacturing process of the container lid with a metal tension ring shown in FIG. 1, and FIG. FIG. 4 is a cross-sectional side view of the main part showing an embodiment of the tension forming and joining means for forming the metal tension ring and joining the container lid, which are the main parts of the apparatus of the present invention, and FIG. 4 is the means shown in FIG. 5 is a sectional view of the main part taken along the line IV-ff, FIG. 5 is a sectional view of the main part taken along the line V-V of the means shown in FIG. 6, and FIG. FIG. 7 is a diagram showing the trajectory of the lifting and lowering movements of various components of the tension ring forming and joining unit shown in FIG. 6, and FIG. A perspective view illustrating the main parts of the tension forming and binding unit showing the delivery state, FIG. 9 is a sectional view of the main parts of the tension ring forming and binding knit in the pre-formed pot receiving area, and FIG. 10 is the container lid receiving area. FIG. 11 is a perspective view illustrating the main parts of the tension ring forming and joining unit showing a state in which container lids are delivered from the container lid supplying means; FIG. 11 is a sectional view of the main parts of the tension ring forming and joining unit in the curved area; FIG. FIG. 2 is a perspective view of the main parts of the tension forming and joining unit in the curved region. DESCRIPTION OF SYMBOLS 10... Preformed body forming means 12... Preformed body supply means 14... Container lid supply means 16... Tensile forming and bonding means 18... Container lid transfer means 20... Bonding reinforcement Means 22... Stationary support shaft 24.26... Bearing member 28... Rotating support body 60... Large input gear 62... First annular cam block 64... Annular cam groove 66... - Second annular cam block 68... annular cam groove 40... annular stationary support plate 4
2... Support leg 44... Sixth annular cam block 46... Fourth annular cam block 48.50... Annular cam groove 52... Stretch forming and coupling unit 54...
・Outer side 56... Set screw 58... Support member 60... Upper half part 62... Lower half part 6
4-... Groove 66... Set screw 68... Outer member 70.72-... Groove 74... Set screw 76...
Outer member 78... Square pillar 80... Countersunk screw
82.84... Plate member 86... Square pillar 88.
90... Hole 92... Through hole 94... Set screw 96.2. Screw hole 98... Upper winding tool 100... Stopping member 102... Upper mandrel member 104... Spring member 106... Slot 108
-...Horizontal pin 110...Shaft 112...Followed roller 114...Guiding member 116...Guiding groove 118...Sliding plate 120...Press member 122...Plate member 124 ... Axis 1
26... Driven roller 128... Hole 130... Lower mandrel member 162... Shaft 164... Driven roller 16
6... Lower winding tool 168... Container lid receiving pocket 140... Hammer means 142... Opening 14
4.--Pin 146...Arm 148.
150... Opening 152... Connecting member 154...
・Set screw 156...Hammer tool 158...Series
Connection rod 160... Locking nut 162... Disc bar
164...Connection lever 166...Sliding lever
168... Axis 170... Followed roller 172...
・Openings 174a, 174b...Holder 176
...Preformed body 178, ...Cylindrical main part 180...
・Lower end part 182...Cylindrical main part 184...
Upper end portion 186, 188... Complementary notch 190,... Vertical mandrel 192... Container
Lid 194...Skirt wall 19610. Groove 198・
・Stationary guide rail 200 ・Inner surface 20
2...Stationary guide rail 204...Top surface
Wall 206... Tear-off tab piece 20B... Base
Part 210...Free end FIG, 4 FIG, 5 FIG, 6 126 IZL)

Claims (1)

[Scope of Claims] (1) Means for shearing and simultaneously curving a strip along the edge of a thin metal plate to form a section-shaped preformed body with overlapping ends, and a free end of a tear-off tab of a container lid. The container lid and the preformed body are positioned so that they overlap each other, and the peripheral edge of the preformed body is curled in the radial direction to form a ring. In an apparatus for forming a metal tension ring and at the same time joining it to a container lid, the tension forming and joining means for forming a metal tension ring and rolling the tear-off tap into the ring and joining the two together, the tension ring and the joining means comprises a rotary support body that is continuously driven to rotate, and a plurality of tension ring molding units and coupling units provided on the rotary support body at predetermined intervals in the circumferential direction; Each of the tension ring forming and bonding units is conveyed sequentially through a preform pot receiving area, a container lid receiving area and a rolling area, and the preform is transferred to the tension forming and bonding unit in the preform pot receiving area. unit, the container lid is supplied to the tension forming and joining unit in the container lid receiving area, and the curling and rolling joining is performed in the rolling area. A device that forms metal tensioning rings and connects them to container lids at the same time. θ) Each of said stretch forming and bonding units:
A vertical mandrel is provided with an upper mandrel member and a lower mandrel member arranged in alignment with each other in the vertical direction, and at least one of the upper mandrel member and the lower mandrel member is configured to be vertically movable. In the receiving area, the preformed body transported by the preformed body supplying means is conveyed between an upper mandrel member and a lower mandrel member that are located vertically apart from each other by a predetermined distance, and the upper mandrel member is lowered and/or 2. The apparatus of claim 1, wherein the preform is fitted into the vertical mandrel trap by raising the lower mandrel member. (3) The upper mandrel member has a cylindrical main part and a substantially conical lower end, and the lower mandrel member has a cylindrical main part and a substantially conical upper end. The lower mandrel member has substantially the same outer diameter as the main portion, and complementary notches are provided in the lower end of the upper mandrel member and the upper end of the lower mandrel member to lower the upper mandrel member and/or to lower the lower mandrel member. 3. The apparatus of claim 2, wherein the main portion of the upper mandrel member and the main portion of the lower mandrel member join together to form a substantially continuous cylindrical vertical mandrel when raised. (4) An upper annular winding tool and a lower annular winding tool are provided on the outer periphery of the vertical mandrel, and the upper annular winding tool is installed after passing through the preformed body receiving area and before reaching the container lid receiving area. The preform is lowered to a predetermined position, lowered to a position where the lower edge of the preform fitted on the vertical mandrel abuts the lower annular winding tool, and after passing through the container lid receiving area, the upper annular winding tool is lowered. the preformed body in cooperation with the lower annular winding tool,
4. The device according to claim 2, wherein the device is configured to simultaneously deform the free end of the tear-off tab of the container lid. (5) Each of said tension forming and joining units comprises a preform having a free end of a tear-off tab superimposed thereon after passing through said container lid body receiving area and before entering said rolling area. 7177 means for pressurizing a portion of the vertical mandrel and the surface of the vertical mandrel to curve the free end of the tear tag in its width direction to a curvature substantially the same as the curvature in the longitudinal direction of the preformed body. The apparatus according to any one of items 1 to 4.