JPH0119979B2 - - Google Patents

Description

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

<Background Art> Recently, containers have been developed in which a tear weakening line extending from a tear-off tab protruding from the skirt portion of the container lid all the way to the top surface is provided on the container lid body, and the container can be easily opened by pulling the tear-off tab. Lids are popular. In this type of container lid, it is necessary to pull up the tear tab with considerable force when opening the lid, and therefore, the tear tab is made relatively long or equipped with a suitable tension piece. Makes opening easier.

However, a relatively long tear-off tab has the disadvantage that a lot of material is wasted when the container lid is preformed from sheet metal, which increases the manufacturing cost of the container lid. In addition, when attaching a tension piece to the tear-off tab on a container lid, it has traditionally been
Connections are made by means such as riveting or clamping, but these methods require a lot of time and effort during the manufacturing process, and the manufacturing cost increases.
The connection part is fragile and there is a risk of it being severed before the package is opened.

In order to solve the above-mentioned problems, a substantially cylindrical pre-formed body is formed, and the free end of the tear-off tab of the container lid and a part of the pre-formed body are able to overlap with each other. positioning the container lid and the preformed body, and then curling the peripheral edge of the preformed body in the radial direction to form a ring, and rolling the tear-off tab into the ring to join the two; A manufacturing method and device for manufacturing container lids with tension rings were proposed by Wikanders in Sweden, and a patent application has been filed (patent application).
No. 58-13855 (see JP-A-59-144536) and Japanese Patent Application No. 58-13856 (see JP-A-59-144537). In this type of container lid with a tension ring, the molding of the container lid is carried out by a preform forming means that forms a substantially annular preform, and a position where the preform is joined to a tear-off tab of the container lid. A pre-formed body supplying means, a container lid supplying means for supplying a container lid, and a tension ring forming means for forming the pre-formed body butted against the tear-off tab of the container lid into a tension ring and simultaneously joining this to the container lid. and a coupling means;
This is easily accomplished by an apparatus basically constructed from.

In such a case, in order to obtain a container lid with a tension ring with stable quality at a low cost, a substantially cylindrical annular pre-formed body is formed at a sufficiently high speed, and the formed pre-formed body is used as a tension ring and then formed at a higher speed. It is required to be formed into a shape and to bond sufficiently firmly to the tear tab of the container lid.

Therefore, in order to satisfy the above-mentioned requirements, the applicant improved the apparatus for forming and joining a container lid with a tension ring having the above-described configuration, and formed and joined the tension ring at a sufficiently high speed and with sufficient strength. proposed a device that can simultaneously form a tension ring and bond it to a container lid. Such a device includes a rotating support that is rotated in a predetermined direction, and is arranged at intervals on the rotating support and is moved sequentially through a preformed body receiving area, a container lid receiving area, and a rolling area. a plurality of tension ring forming and joining units, each of the plurality of tension ring forming and joining units having a vertical mandrel member comprising an upper mandrel member and a lower mandrel member; The tension ring and the coupling are arranged such that the preform is fitted onto the vertical mandrel in the container lid receiving area, and the container lid overlaps a portion of the preform that is fitted onto the vertical mandrel in the container lid receiving area. The preform is supplied to the unit, and the preform is curled and joined to the tear-off tab of the container lid in the wind-up area.

However, in such an apparatus, the preform is fitted onto a vertical mandrel by vertical movement of the upper mandrel member and/or the lower mandrel member, and therefore the preform is tilted and the tension ring and If the diameter of the preformed body supplied to the coupling unit or the preformed body is small, it will fit between the upper mandrel member and the upper mandrel member when being fitted, and the preformed body will not be fitted onto the vertical mandrel. , it will not be transported as required. If such a situation occurs, as will be readily understood, only the tear tab of the container lid will be curled in the engulfing area, producing a container lid without a tension ring, and this entrapped preform will be curled. As a result, the preformed body supplied thereafter may enter between the upper mandrel member and the lower mandrel member, and there is a risk that the upper mandrel member and the lower mandrel member may be damaged.

<Object of the Invention> The main object of the present invention is to be able to prevent the occurrence of so-called no-ring container lids and damage to the upper mandrel member, lower mandrel member, etc. by detecting a feeding failure of the preformed body. It is an object of the present invention to provide an apparatus for forming a tension ring and simultaneously tying it to a container lid.

<Summary of the Invention> According to the present invention, in order to achieve the above object,
A preformed body forming means for forming a substantially cylindrical annular preformed body, and a container lid such that the free end of the tear-off tab of the container lid and a part of the preformed body are overlapped with each other. and the pre-formed body, the peripheral edge of the pre-formed body is curled in the radial direction to form a ring, and the tear-off tab is rolled into the ring to join the two together; In an apparatus for forming a tension ring and simultaneously coupling it to a container lid, the tension ring forming and coupling means comprises a rotary support that is rotatably driven in a predetermined direction, and a rotary support that is spaced apart from each other by a predetermined distance in the circumferential direction. a plurality of tension ring forming and connecting units provided on the rotary support and moved sequentially through a preform receiving area, a container lid receiving area and an insertion area by rotation of the rotating support; trouble detection means for detecting a feeding failure of the pre-formed body, each of the tension ring forming and joining units being comprised of an upper mandrel member and a lower mandrel member disposed in vertical alignment. At least one of the upper mandrel member and the lower mandrel member is configured to be vertically movable, and in the preformed body receiving area, movement of at least one of the members causes the preformed body to move vertically. The trouble detection means is fitted onto a mandrel, and the trouble detection means detects the relative positions of the upper mandrel member and the lower mandrel member of the vertical mandrel on the downstream side in the rotational direction of the rotary support body than the preformed body receiving area. An apparatus is provided, characterized in that a feeding failure of the preform is detected by detecting the relationship.

<Preferred Embodiments of the Invention> Hereinafter, preferred embodiments of the apparatus constructed according to the present invention will be described in detail with reference to the accompanying drawings. First, the overall basic configuration of the apparatus according to the present invention will be explained with reference to FIG. , a tension ring forming and coupling means 16 , a container lid transfer means 18 , and a coupling reinforcement means 20 . The outline of each of these means is as follows.

The pre-formed body forming means 10 is a substantially cylindrical shape in which a strip is cut from a strip-shaped thin metal plate made of chromic acid treated steel, tin plate, aluminum alloy, etc., and simultaneously curved in the longitudinal direction and both ends of the strip are overlapped with each other. An annular preform is formed. Next, the preform supplying means 12 receives the preform formed by the preform forming means 10 in the holding areas A and B, conveys it in the direction shown by the arrow, and transfers it to the preform receiving area C. Carry it out. On the other hand, the container lid supply means 14 receives the container lid in the holding area D, conveys it in the direction shown by the arrow, and carries it out to the container lid receiving area E. The tension ring forming and joining means 16 (described in detail later) receives the preform from the preform supply means 12 in the preform receiving area C, carries it out in the direction shown by the arrow, and then transfers it to the container lid receiving area E. receives the container lid from the container lid supply means 14, positions the container lid and the preformed body so that the tearing tab of the container lid and the preformed body can overlap with each other, and then removes the container lid at the curved area F. The tear-off tab of the container lid is bent as required, and then the pre-formed body is curled to form a ring in the tension ring forming and joining area G, and the tear-off tab of the container lid is rolled into this ring to join the two. and transported to discharge area H. Further, the container lid moving means 18 receives the container lid to which the tension ring is coupled from the tension ring and coupling means 16 in the discharge area H, and transports it in the direction of the arrow.
Export to transfer area I. The bond reinforcing means 20 receives the container lid to which the tension ring is bonded from the container lid transfer means 18 in the transfer zone I, and carries it out in the direction of the arrow.
In the pressurized deformation area J, the joint between the tear-off tab of the container lid and a part of the tension ring is pressurized and deformed to strengthen the joint, and then transported to the delivery area K. . The structure and operation effect of each of the above-mentioned preformed body forming means 10, preformed body supplying means 12, container lid forming means 14, container lid transferring means 18, and bond reinforcing means 20 are described in the patent application filed by the present applicant. Application No. 58-65285 (see Japanese Patent Application Laid-open No. 59-191530),
Japanese Patent Application No. 58-65286 (see Japanese Patent Publication No. 62-38054), Japanese Patent Application No. 58-65287 (see Japanese Patent Publication No. 63-33931), Japanese Patent Application No. 58-65289 (Japanese Unexamined Patent Publication No. 59-191527)
(see Japanese Patent Application No. 1983-65290), and Japanese Patent Application No. 1983-65290
-191534)).

Next, the tension ring forming and connecting means 16 will be described in detail with reference to FIGS. 2 to 11. Illustrated tension ring forming and coupling means 16
As shown in FIG. 2, the stationary support shaft 22 is provided with a stationary support shaft 22 extending substantially vertically.
A rotary support body 28 is rotatably mounted around the periphery of the body via bearing members 24 and 26. A large input gear 30 is fixed to the lower end of the rotary support 28, and this gear 30 is drivingly connected to a drive source (not shown) such as an electric motor via a suitable transmission means (not shown). There is. Therefore, the rotary support 28 is continuously rotated in a predetermined direction (the direction indicated by the arrow in FIG. 1). A first annular cam block 32 is fixed to the upper end of the support shaft 22. An annular cam groove 34 is provided on the outer peripheral surface of the cylindrical hanging portion of the first annular cam block 32 . Further, a second annular cam block 36 is fixed to the outer circumference of the upper end of the first annular cam block 32, and an annular cam groove 38 is provided on the outer circumferential surface of the second annular cam block 36.

The illustrated tension ring forming and coupling means 16 includes:
Furthermore, an annular stationary support plate 40 is provided around the lower end of the rotary support body 28 at a predetermined distance. This support plate 40 is supported by support legs 42, and a third annular cam block 44 and a fourth annular cam block 46 are fixed to the upper surface thereof. An annular cam groove 48 is provided on the outer peripheral surface of the third annular cam block 44, and an annular cam groove 50 is provided on the outer peripheral surface of the fourth annular cam block 46.

Further, a plurality of tension ring molding and coupling units 52 are disposed on the rotary support 28 at equal intervals in the circumferential direction. That is, the rotation support 2
The upper half of 8 has a regular polygonal outer shape corresponding to the number of tension ring forming and coupling units 52, and a tension ring forming and coupling unit 52 is disposed on each outer surface 54 of these polygons. ing. These tensile ring forming and joining units 5
2 is provided with a support member 58 fixed to each outer surface 54 of the rotary support body 28 by a set screw 56. As shown in FIGS. 4 and 5, the support member 58 has an upper half 60 having a radial dimension larger than a lower half 62, and the upper half 60 having a radius larger than that of the lower half 62. Projecting beyond the outer surface. As shown in FIG.
The radially outer surface of the upper half 60, which projects beyond the radially outer surface of the lower half 62, is provided with a groove 64 of square cross section that extends vertically therethrough. This groove 64 is formed in the upper half 60 of the support member 58.
Although the support member 58 itself is open radially outward, an outer member 68 is fixed to the radially outer surface of the upper half 60 of the support member 58 by a set screw 66, and this outer member 68 is connected to the groove. 64 in the radial direction. Furthermore, the support member 58 includes
A groove 70 is provided that extends vertically through the radially inner portion of the upper half 60 and through the lower half 62. This groove 70 has a rectangular cross section that is somewhat smaller than the rectangular cross section of the groove 64 and is
The upper half 60 directly follows said groove 64 in the radial direction and is open radially outwards in the lower half 62 . In addition, the upper half 6 of the support member 58
0, a groove 72 is provided which has the same width as the groove 70 except for the upper end and extends from this groove 70 to the radially inner end of the support member 58. Therefore, in the upper half 60, except for its upper end, the support member 58 is continuously open from the radially inner end to the radially outer end by the grooves 72, 70 and 64. On the other hand, as shown in FIGS. 3 and 5, at the lower end of the lower half 62 of the support member 58, an outer member 76 is fixed to the radially outer surface of the lower half 62 by a set screw 74. Ori,
This outer member 76 covers the radially outer surface of the groove 70.

In FIGS. 2 and 3, a square post 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. (See Figure 4). At the lower end of this prism 78 are two plate members 82 and 84 that sandwich a pair of disc springs 80.
A prism 86 is fixed via the. This prism 8
6 is provided with a hole 88 having a circular cross section that is open downward, and a hole 90 having a somewhat smaller diameter than the hole 88 that extends upward from the upper end of this hole 88 through the prism 86 is provided. There is. Furthermore, the disc spring 80 and the two plate members 82 and 84 that sandwich it are also provided with through holes that align with the holes 90. A set screw 94 whose head is located at the upper end of the hole 88 provided in the square column 86 is attached to the hole 90.
and is screwed into a screw hole 96 formed at the lower end of the square column 78 through a through hole, thereby fixing the two plate members 82 and 84 holding the disc spring 80 and the square column 86 to the lower end of the square column 78. Ru. The two plate members 82 and 84 that sandwich the disc spring 80 and the square pillar 86 have the same cross-sectional outline as the square pillar 78, and can slide in the groove 64 together with the square pillar 78 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 86. That is, the upper winding tool 98 is brought into contact with the shoulder formed on the inner surface of the hole 88 via the sleeve member 99, and the stopper is brought into contact with the shoulder formed on the outer peripheral surface of the upper winding tool 98. By fixing the member 100 to the lower end of the square column 86, the upper end of the upper winding tool 98 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. Upper mandrel member 1
02 has a slot (elongated hole) 1 extending vertically.
06 is provided in which the slot 106 has a square post 8 at both ends extending through the upper winding tool 98.
6 is inserted through the horizontal pin 108. The horizontal pin 108 allows the upper mandrel member 102 to move relative to the prism 86 and the upper winding tool 98 in the vertical direction over a predetermined range, and also allows the upper mandrel member 102 to move relative to the prism 86 and the upper winding tool 98 over a predetermined range. and prevents the upper mandrel member 102 from rotating relative to each other about a vertically extending central axis. On the other hand, as shown in FIG. 2, a horizontally extending shaft 110 is fixed to the upper end of the square column 78, and a shaft 110 is provided at the inner protruding end of the shaft 110 to the first annular cam block 32. A driven roller 112 accommodated in the annular cam groove 34 is rotatably mounted. As described above, when the rotating support 28 rotates in a predetermined direction,
It will be appreciated that the prism 78, and therefore the upper winding tool 98 and the upper mandrel member 102 located at its lower end, move vertically up and down according to a trajectory defined by the annular cam groove 34.

2, 4, and 6, the outer surface of the outer member 68 fixed to the radially outer surface of the upper half 60 of the support member 58 has a vertically extending portion at a predetermined distance laterally. A pair of guide members 114
are fixed, and a guide groove 116 extending vertically is defined between the pair of guide members 114. An elongated sliding plate 118 is attached to the guide groove 116 so as to be slidable in the vertical direction.
A presser member 120 made of a flexible material such as synthetic rubber is joined to 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. On the other hand, a plate member 122 extending vertically upward is fixed to the outer surface of the upper end of the sliding plate 118, and a shaft 12 extending horizontally is fixed to the upper end of the plate member 122.
4 is fixed. The second annular cam block 3 is attached to the inner protruding end of the shaft 124.
A driven roller 126 accommodated in an annular cam groove 38 provided at 6 is rotatably mounted. As described above, it will be understood that when the rotary support body 28 rotates in a predetermined direction, the sliding plate 118 moves up and down in the vertical direction according to the locus defined by the annular cam groove 38.

In FIGS. 2 and 5, the outer member 7 is fixed to the radially outer surface of the lower half 62 of the support member 58.
6 has a hole 128 with a circular cross section that penetrates in the vertical direction.
is provided. This hole 128 is provided with a lower mandrel member 1 whose main portion, excluding the upper end and lower end, has a circular cross section corresponding to the circular cross section of the hole 128.
30 is mounted so that it cannot rotate about its axis but can slide vertically.
The lower end of the lower mandrel member 130 projects downwardly beyond the lower end of the outer member 76, and a horizontally extending shaft 132 is secured to this projection. A driven roller 134 accommodated in an annular cam groove 50 provided in the fourth annular cam block 46 is attached to the outer protruding end of the shaft 132.
is rotatably mounted. As described above, when the rotary support 28 rotates in a predetermined direction, the lower mandrel member 130 moves into the annular cam groove 50.
It will be understood that the robot moves vertically up and down according to a trajectory defined by . Further, this lower mandrel member 130 is similar to the upper mandrel member 10.
2 and cooperates with the upper mandrel member 102. An annular lower winding tool 136 is fixed to the upper surface of the outer member 76. That is, a lower winding tool 136 located around the hole 128 and therefore around the lower mandrel member 130 is positioned in vertical alignment with the upper winding tool 98 . Collaborate with Furthermore, the outer member 7
6 is provided with a container lid receiving socket 138 at the upper end of its outer surface for receiving a container lid.

In FIGS. 2 and 3, the tension ring forming and joining unit 52 is provided with hammer means 140. That is, this hammer means 140 has a pin 144 fixed to the prism 78 at both ends and extending in the vertical direction as shown in FIGS.
It is pivoted by. A substantially L-shaped 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 that further protrudes from the tip of the arm 146 is fixed by a set screw 154.
A hammer tool 156 is attached to 2. 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, and one end of this connecting rod 158 is screwed into the hammer tool 156 . A locking nut 160 is screwed onto the other end of the connecting member 152 that protrudes beyond the outer surface of the connecting member 152, and a hammer tool 156 is attached to the connecting member 152. A recess is provided in the surfaces of the connecting member 152 and the hammer tool 156 that face each other, and a plurality of disc springs 162 through which the connecting rod 158 passes are accommodated in the space defined by the recess. ing. The disc spring 162 elastically cushions the impact when the tip of the hammer tool 156 hits the free end of the tear-off tab of the container lid and pressurizes it, as will be described later. On the other hand, the rear end portion of the arm 146 projects into grooves 70 and 72 provided in the support member 58. One end of a connecting lever 164 is rotatably connected to the rear end of the arm 146. The other end of the connecting lever 164 is pivotally connected to the upper end of a sliding lever 166. As shown in FIGS. 2 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 166 protrudes downward beyond the lower end of the support member 58, and a horizontally extending shaft 168 is fixed to this lower end. A driven roller 170 accommodated in an annular cam groove 48 provided in an annular cam block 44 of No. 3 is rotatably mounted. As described above, it will be understood that when the rotary support body 28 rotates in a predetermined direction, the sliding lever 166 moves up and down in the vertical direction according to the locus defined by the annular cam groove 48. In this case, the sliding lever 16
6 is raised, the arm 146 pivots around the pin 144 in the counterclockwise direction in FIGS. Turn clockwise in Figures 2 and 3. In addition,
In this way, the sliding lever 166 rises and the arm 1
46 in the counterclockwise direction about the pin 144, the tip of the hammer tool 156 projects radially inward through the opening 172 provided at the lower end of the sliding plate 118 (see FIG. 11), and Acts on the free end of the tear tab on the lid.

Tensile ring forming and joining means 1 as described above
6 is further equipped with a trouble detection means for detecting a feeding failure of the preformed body. Referring to FIGS. 1 to 3, the illustrated trouble detection means includes a detector 174 (FIG. 1) disposed near the movement path of the tension ring forming and coupling unit 52, and a detector 174 (FIG. It includes a detection mechanism 176 (FIGS. 2 and 3) disposed in the coupling unit 52,
The detection mechanism 176 consists of a first pin member 178 and a second pin member 180. The detector 174 is composed of a known proximity switch, and in the illustrated example, it is arranged in a preformed body detection area P that exists between a preformed body receiving area C and a container lid receiving area E. . This detector 174, as shown in FIG.
It is secured by a mounting screw 182 to the distal end of a support arm 184 which is secured to a portion of the stationary portion of the tension ring forming and coupling means 16 . On the other hand, the first pin member 178
8 so as to be slidable in the vertical direction. A set screw 94 whose one end is screwed into the square column 78
A through hole 186 extending in the vertical direction is formed in the through hole 186, and the first pin member 17 is inserted into the through hole 186.
8 is slidably attached. One end (lower end) of the first pin member 178 protrudes downward from the lower surface of the set screw 94 into the hole 88, and a head 180a provided at this one end and a recess provided on the lower surface of the set screw 94. A spring member 188 is interposed between the two. As described above, the head 180a of the first pin member 178 is brought into contact with the upper surface of the upper mandrel member 102 by the elastic biasing action of the spring member 188, and furthermore, the head 180a of the first pin member 178 is brought into contact with the upper surface of the upper mandrel member 102 as described above. The lower surface of the flange thus made is brought into contact with the upper end surface of the upper winding tool 98 (see FIGS. 2 and 3). The first pin member 178 described above
The other end (upper end) is formed into a substantially conical shape, and this conical surface defines an inclined action surface. The other end is projectable through the threaded hole 96 of the prism 78 and into the opening 142 thereof, as can be readily seen in FIGS. 2 and 3. Also, the second
The pin member 180 is slidably mounted on the hammer means 140. A through guide hole 190 extending outward is formed in the L-shaped arm 146, and the second pin member 1 is inserted into the through guide hole 190.
80 is attached, and a pin 193 implanted in the arm 146 is received in a groove 191 formed at one end of the second pin member 180. The pin 193 prevents the second pin member 180 from rotating. Therefore, the second pin member 180 is slidable along the longitudinal direction of the through guide hole 190, but does not rotate relative to the arm 146. The other end of the second pin member 180 is provided with a male threaded portion, and the male threaded portion is provided with a first
A screw member 192 and a second screw member 194 are screwed together. Furthermore, at the other end of this male thread,
Third screw member 196 and fourth screw member 198
is screwed on. The fourth screw member 198 is made of a magnetic material and acts as a detected portion, as will be easily understood from the description below. The position of this fourth screw member 198, that is, the fourth screw member 198 and the detector 174 in the preformed body detection area P.
The distance between the second pin member 180 and the third pin member 180 is
The adjustment can be made as required by rotating the screw member 196 and the fourth screw member 198. A fixing screw 200 is screwed onto the outer surface of the lever 146 to which the second pin member 180 is attached, and the fixing screw 200 and the second pin member 1
A spring member 202 is interposed between the step portion 80 and the step portion 80 . As such, the second pin member 180 is biased inwardly by the action of the spring member 202, and the inner surface of the first screw member 192 abuts the outer surface of the fixing screw 200, thereby causing the second pin member 180 to be biased inwardly by the action of the spring member 202. Movement is restricted. Second pin member 18 as described above
0 is inclined, and this inclined end surface defines an inclined action surface. This inclined action surface can come into contact with an inclined action surface formed at the other end of the first pin member 178, as will be described later.

FIG. 7 shows that the rotary support 28 as described above is
The square column 78 (the upper winding tool 98 and the upper mandrel member 102 attached thereto) and the lower mandrel member 13 in the tension ring forming and joining unit 52 move up and down respectively when rotating.
0, the sliding plate 118, and the sliding lever 166 of the hammer means 140, respectively. In addition, the rotation angle in Fig. 7 is 0 degrees and
360 degrees corresponds to the preform receiving area C of the tension ring forming and joining means 16 shown in FIG.

Next, referring to FIGS. 8 through 11 in conjunction with FIG. 7, the tension ring forming and coupling unit 52
The effect of this will be explained. In FIG. 8, in synchronization with the preformed body 206 held at the tip of the holder 204 of the preformed body supply means 12 reaching the preformed body receiving area C, the tension ring forming and coupling unit 52 is activated. The central axes of the upper mandrel member 102 and lower mandrel member 130 that constitute the same reach the preformed body receiving area C. In this case, on the upstream side of the preformed body receiving area C, there is a sufficient gap between the lower end of the upper mandrel member 102 and the upper end of the lower mandrel member 130, and the lower end of the upper mandrel part 102 and the lower mandrel member Member 13
The upper end of the preformed body 206 is located above or below the preformed body 206 that is being conveyed to the preformed body receiving area C by the holder 204, respectively. As shown in FIG. 8, the upper mandrel member 102 has a cylindrical main portion 208 and a substantially conical lower end portion 210 that gradually tapers downward. It has a columnar main portion 212 and a substantially conical upper end 214 that gradually tapers upward. Then, the upper mandrel member 102
The outer diameter of the main portion 208 and the lower mandrel member 130
The outer diameter of the main portion 212 is substantially the same. In some cases, the main portion 2 of the upper mandrel member 102
The outer diameter of 08 is the main part 2 of the lower mandrel member 130.
It can also be made slightly larger than the outer diameter of 12.
Furthermore, the lower end 21 of the upper mandrel member 102
The lower end 210 of the upper mandrel member 102 and the upper end 214 of the lower mandrel member 130 are provided with complementary notches 216, 218, each fully accommodating the other. When these are sufficiently combined, as shown in the left end of FIG. Cylindrical vertical mandrel 2
20.

However, as is clear from Figure 7,
When the upper mandrel member 102 and the lower mandrel member 130 turn in the direction of the arrow from the position indicated by the solid line in the figure and reach the pre-formed body receiving area C, the prism 78 descends, the upper mandrel member 102 descends, and The lower mandrel member 130 is raised;
In the preformed body receiving area C, as shown in the center of FIG.
14 are respectively inserted from above and below into the preformed body 206 which has reached the preformed body receiving area C in synchronization, and are partially assembled with each other. Next, the holder 204 is rotated in the direction of the arrow from the preformed body receiving area C.
Upper mandrel member 102 and lower mandrel member 130 pivot in the direction of the arrow. Therefore, at this time, the holder 204, the upper mandrel member 102, and the lower mandrel member 130 gradually move away from each other, but at this time, the preformed body 206 is separated from the lower end 210 of the upper mandrel member 102 and the lower mandrel member, which are partially assembled with each other. Since it is present around the upper end 214 of the member 130, it is detached from the tip of the holder 204 and received by the upper mandrel member 102 and the lower mandrel member 130. When turning from the pre-formed body receiving area C in the direction of the arrow, the prism 78 further descends a little, the upper mandrel member 102 further descends a little, and the lower mandrel member 130 further rises a little. As shown at the left end of the figure, the lower end 180 of the upper mandrel member 102
and the container lid 184 of the lower mandrel member 130 are fully assembled to form a substantially continuous cylindrical vertical mandrel 220 around which the preform 196 is fitted.

As described above, after the preform 176 is delivered from the preform supply means 12 to the vertical mandrel 190 of the tension ring forming and joining unit 52, the tension ring forming and joining unit 52 continues to rotate, and the preform When the prism 78 reaches an angular position of approximately 25 degrees from the receiving area C, the prism 78 starts to further descend, as is clear from FIG. be done. When the prism 78 is lowered, the upper mandrel member 102 cannot lower because its lower end 180 is fully engaged with the upper end 184 of the lower mandrel member 130 that cannot be raised or lowered, and therefore the spring member 188 It rises relative to the prism 78 against the elastic biasing action. On the other hand, the upper winding tool 98 descends together with the prism 78, so that 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 206 fitted into the vertical mandrel 220, and the preformed body 206 is lowered along the vertical mandrel 220. When the upper winding tool 98 descends to a predetermined position, the lower edge of the lower preformed body 206 comes into contact with the inner peripheral edge of the upper surface of the lower winding tool 136, and at this point, the upper winding tool 98 The descent is completed (see Figure 10).

At an angular position of approximately 45 degrees from the pre-formed body receiving area C, ie, at an angular position where the lowering of the upper winding tool 98 ends, a detector 174 is located close to the movement path of the tension ring forming and joining unit 52. (see FIGS. 1, 7, and 10), and therefore, a feeding failure of the preform 206 is detected at such an angular position (i.e., the preform detection area P).
Referring primarily to FIG.
0 as required and reaches the preformed body detection area P, as described above, the upper mandrel member 1
02 rises relative to the prism 78 against the elastic biasing force of the spring member 188, and along with this, the first pin member 178 also rises relatively. In this way, as shown in FIG. 10, the first pin member 17
The other end of the first pin member 178 projects through the screw hole 96 formed in the prism 78 into the opening 142 thereof, and the tilting action of the other end of the first pin member 178 is caused by the second pin member 180 attached to the lever 146. comes into contact with or approaches the tilting action of one end of the . However, in this case, the inclined action surface of the first pin member 178 is connected to the second pin member 1.
80, the second pin member 180 is pushed outward (in FIG. 10) against the elastic biasing force of the spring member 202 by the action of the first pin member 178. upper left), and this second pin member 180 is
In the non-working position shown in the figure (in such a non-working position, the inner surface of the first threaded member 192 is connected to the fixing screw 20).
10), and the fourth screw member 198 is maintained in the position shown in solid line in FIG. On the other hand, as shown in FIG. 9, in the preformed body receiving area C, the preformed body 206
2 and the lower mandrel member 130 and do not fit onto the vertical mandrel 220 as desired (e.g., the preform 206 is fed into the tension ring and coupling unit 52 at an angle, or the preform 206 (occurs when the diameter of the upper mandrel member 102 is small), the lower end 21 of the upper mandrel member 102
A preformed body 206 is interposed between the upper end portion 214 of the lower mandrel member 130 and the upper mandrel member 102 , and the upper mandrel member 102 is supported by the preformed body 206 against the elastic biasing force of the spring member 188 as described above. The increase will be relatively higher than in the case. Thus,
As will be readily understood, the angled acting surface of the first pin member 178 abuts and acts on the angled acting surface of the second pin member 180, thereby causing the second pin member 180 to spring. The fourth screw member 198 is slid outwardly against the elastic biasing force of member 202 into the operative position, and the fourth threaded member 198 is located in the position shown in phantom in FIG. The detector 174
detects the fourth screw member 198 constituting the detected portion in the preformed body detection area P, and detects a feeding failure by detecting the distance between the detector 174 and the fourth screw member 198. More specifically, the detector 174 is configured to generate a deactivation signal when the interval is within a predetermined range, and to generate an activation signal when the interval is less than the predetermined range. As shown above, the preformed body 20
6 is fitted onto the vertical mandrel 220 as required and the fourth screw member 198 is located in the position shown in solid line in FIG.
The distance from the screw member 198 falls within the predetermined range, and the detector 174 generates an inactivation signal. However, on the other hand, the preformed body 206 is not fitted onto the vertical mandrel 220 as required as described above, and the fourth When the screw member 198 is positioned at the position indicated by the two-dot chain line in FIG. generate. When the activation signal is generated, a warning lamp (not shown) lights up based on the signal, and the preformed body 20
6. Notify of supply failure. If desired, the device may be stopped in place of or together with the lighting of the warning lamp. As above,
By detecting a change in the relative positional relationship between the upper mandrel member 102 and the lower mandrel member 130 due to a feeding failure of the preformed body 206, a feeding failure of the preformed body 206 can be easily detected.

Next, the tensile ring forming and joining unit 52
When the prism 78 rotates from an angular position of approximately 45 degrees to an angular position of approximately 65 degrees when viewed from the preformed body receiving area C,
is raised, and the upper winding tool 98 is also returned to its original position. At this time, the upper mandrel member 102 is
Due to the elastic biasing action of the spring member 188, the prism 78
However, the lower mandrel member 130 does not move up or down relative to the lower mandrel member 130. 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 136 is maintained at that position without rising along with the upper winding tool 98.

When the tension ring forming and joining unit 52 continues to rotate further and reaches an angular position of approximately 80 degrees from the preform receiving area C, the tension ring forming and joining unit 52 moves to the container lid receiving area E (FIG. 1). reach. In this container lid receiving area E, the container lid 222 transported by the container lid supply means 14 is
(Fig. 1) is the tensile ring forming and joining unit 5.
The container lid receiving pocket 138 provided at the upper end of the outer surface of the outer member 76 in FIG. 2 is delivered as required. Once delivered, the top wall of the lower end 222 is positioned radially outwardly and its tear tab is positioned uppermost, with the tear tab on the top surface of the outer member 76. Therefore,
The free end of the tear-off tab is positioned superimposed on the outside of the radially outer portion of the preform 206 that is fitted onto the vertical mandrel 222 .

While the tension ring forming and joining unit 52 is pivoted 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 slide plate 118, the slide plate 118 is positioned from the non-operating position shown in FIGS. 2 and 6 to the operating position shown in FIG. 11. That is, in FIG. 11, when the sliding plate 118 is lowered to the operating position, the lower end of the sliding plate 118 extends below and beyond the uppermost portion of the container lid 222 housed in the pocket 138 of the outer member 76. It is located opposite to the upper half of the top wall of the container lid 222. As a result, the presser member 120 made of a flexible material such as synthetic rubber and bonded to the inner surface of the lower end of the sliding plate 118 is pressed against the upper half of the outer surface of the top wall of the container lid 222. The sliding plate 118, which has been lowered as described above, allows the tension ring forming and joining unit 52 to be approximately 200 mm wide when viewed from the pre-formed body receiving area C.
It remains in the working position until the angular position is reached. When the tension ring forming and coupling unit 52 pivots from this angular position over an angular range of approximately 60 degrees, the sliding plate 118 is raised and returned to the non-operative position shown in FIGS. 2 and 6. .

On the other hand, as shown in FIG.
The slide lever 166 of the hammer means 140 moves up and down in exactly the same manner as the prism 78 moves up and down, except during the time when the hammer means 140 moves up and down. However, during the passage of the tension ring forming and joining unit 52 through the curved region F, the prism 78 is not raised or lowered, but the sliding lever 166 of the hammer means 140 is raised and then lowered. That is,
While the tension ring forming and joining unit 52 pivots from an angular position of approximately 100 degrees to an angular position of approximately 135 degrees as viewed from the preform receiving area C, the sliding lever 166
is raised, and then approximately
During pivoting from the 135 degree angular position to the approximately 170 degree angular position, the sliding lever 166 is lowered to its original position. When the slide lever 166 of the hammer means 140 is raised, the arm 146 pivots counterclockwise about the pin 144 (see FIGS. 2 and 3). When the tension ring forming and joining unit 52 is at an angular position of approximately 135 degrees as viewed from the preform receiving area C, the arm 146 is pivoted by the raising of the slide lever 166 to the position shown in FIG.
As a result, the tip of the hammer tool 156 attached to the tip of the arm 146 protrudes radially inward through the opening 172 provided at the lower end of the sliding plate 118, and the tear-off tab of the container lid 222. and the vertical mandrel 19 by striking the preformed body 206
Press it to 0. This blow causes the tear tab of the container lid 222 to curve as desired and overly closely overlap the outer surface of the preform 206 over its entire width. Thereafter, when the sliding lever 166 is lowered, the arm 146 is pivoted clockwise about the pin 144 (see FIG. 11) and returned to the position shown in FIGS. 2 and 3. In addition, the lever 146
During the above-mentioned turning, one end of the second pin member 180 comes into contact with the inclined working surface of the first pin member 178, as can be understood by comparing FIGS. 10 and 11. Never.

After the tension ring forming and joining unit 52 passes through the curved area F, while passing through the tension ring forming and joining area G, that is, from an angular position of approximately 180 degrees when viewed from the preform receiving area C, to approximately 210 degrees. (see FIG. 1), the preform 206 is formed into a tension ring by the cooperation of the upper winding tool 98 and the lower winding tool 136. This tension ring is wrapped around and connected to a tear tab on the container lid 222. That is, the preformed body 20
The upper edge of the tear-off tab 6 surrounds the free end of the tear-off tab when it is rolled up in a substantially arc shape in the radial direction, and as the upper edge of the preformed body 206 is rolled up, the tear-off tab is The free end is also rolled up. In this manner, the preform 206 is wound into a tension ring having a generally circular cross-sectional shape, which is wound and connected to the free end of the tear-off tab.

While the tension ring 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 preform 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 FIGS. 2 and 3. At the initial stage of the rise of the prism 78, the upper mandrel member 102 is in contact with the spring member 18.
8 relative to the prism 78 due to the elastic biasing action of the upper mandrel member 102, after the lower surface of the flange formed at the upper end of the upper mandrel member 102 comes into contact with the upper end surface of the upper winding tool 98. , the upper winding tool 9 is moved along with the rise of the prism 78.
8 and then disengages upwardly from the molded tension ring and returns to the position shown in FIGS. 2 and 3. In addition, the tensile ring forming and joining unit 5
2 pivots from an angular position of approximately 210 degrees from the preform receiving area C to an angular position of approximately 260 degrees, the lower mandrel member 130 descends, and the lower mandrel member 130 also moves downwardly from the formed tension ring. It detaches and returns to the position shown in FIG. In this manner, the tension ring forming and joining unit 52 returns to the condition shown in FIG. Note that the tension ring forming and joining unit 52 holds the container lid 222 to which the tension ring is connected.

The tension ring forming and joining unit 52 continues to rotate until it reaches approximately 280 degrees when viewed from the preform receiving area C.
At the angular position of 100 degrees, the discharge zone H is reached (see FIG. 1).

Detailed operation of the tension ring forming and joining means 16 (excluding detection of feeding failure of preform 206)
Regarding the patent application filed by the applicant in 1982,
It is substantially the same as No. 65288 (see Japanese Patent Publication No. 63-33932).

Although the apparatus configured according to the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such specific examples, and various modifications and changes can be made without departing from the scope of the present invention. is possible.

[Brief explanation of drawings]

FIG. 1 is a simplified plan view of an apparatus constructed in accordance with the present invention. 2 is a cross-sectional view of a portion of the tension ring forming and coupling means of the apparatus of FIG. 1; FIG. FIG. 3 is a sectional view showing a prism and hammer means attached to the prism in the tension ring forming and joining means of FIG. 2; Figure 4 shows - in Figure 2.
Cross-sectional view along lines. FIG. 5 is a sectional view taken along the - line in FIG. 2. FIG. 6 is a sectional view taken along the line - in FIG. 2. 7 is a diagram showing the locus of the lifting and lowering movements of various components of each tension ring forming and joining unit of the tension ring forming and joining means of FIG. 2; FIG. FIG. 8 is a partial perspective view for explaining the delivery of the preformed body in the preformed body receiving area. FIG. 9 is a partial perspective view showing a state where the preformed body is insufficiently supplied to the preformed body receiving area. FIG. 10 is a sectional view showing the state of the tensile ring forming and coupling unit in the preformed body detection area. FIG. 11 is a cross-sectional view showing the state of the tension ring forming and coupling unit in the curved area. 10... Preformed body forming means, 16... Tension ring forming and coupling means, 28... Rotating support, 52
...Tension ring forming and joining unit, 102...
... Upper mandrel member, 130 ... Lower mandrel member, 140 ... Hammer means, 174 ... Detector, 176 ... Detection mechanism, 206 ... Preformed body, 220 ... Vertical mandrel, 222 ... Container lid, C ... Preformed body receiving area, E... Container lid receiving area, G
...Involvement area, P...Preformed object detection area.

Claims (1)

[Scope of Claims] 1. A preformed body forming means for forming a substantially cylindrical annular preformed body, a free end of a tear-off tab of a container lid, and a portion of the preformed body are overlapped with each other. Position the container lid and the pre-formed body so that the pre-formed body is formed, curl the peripheral edge of the pre-formed body in the radial direction to form a ring, and roll the tear-off tab into the ring to separate the two. In an apparatus for forming a tension ring and simultaneously coupling it to a container lid, the tension ring forming and coupling means comprises: a rotating support rotatably driven in a predetermined direction; A plurality of tensioners are provided on the rotating support at predetermined intervals in the direction and are sequentially moved through the preform receiving area, the container lid receiving area, and the insertion area by rotation of the rotating support. a ring forming and joining unit; and trouble detection means for detecting a feeding failure of the preform, each of the tension ring forming and joining units having an upper mandrel member disposed in vertical alignment; a vertical mandrel composed of a lower mandrel member, at least one of the upper mandrel member and the lower mandrel member is configured to be vertically movable, and at least one of the upper mandrel member and the lower mandrel member is configured to move vertically in the preformed body receiving area. The pre-formed body is fitted onto the vertical mandrel, and the trouble detection means connects the upper mandrel member of the vertical mandrel to the downstream side of the pre-formed body receiving area in the rotating direction of the rotary support. An apparatus characterized in that a feeding failure of the preform is detected by detecting the relative positional relationship of the lower mandrel members. 2. 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, and the lower end of the upper mandrel member has a cylindrical main part and a substantially conical upper end. and a complementary notch formed in the upper end of the lower mandrel member;
When the upper mandrel member is lowered and/or the lower mandrel member is raised, the main portion of the upper mandrel member and the main portion of the lower mandrel member are combined to form a cylindrical vertical mandrel. An apparatus according to claim 1. 3. The trouble detection means includes a detector disposed near the movement path of the tensile ring forming and joining unit, and a detection mechanism including a detected part, and the trouble detection means includes a detection mechanism including a detected part, The relative positional relationship of is transmitted to the detected part via the detection mechanism, and the detector detects the distance from the detector to the detected part. Apparatus described in section. 4. The detection mechanism includes a first pin member which is slidably disposed and whose one end abuts the upper mandrel member, and a first pin member which is slidably disposed and whose one end abuts the other end of the first pin member. 4. The device according to claim 3, wherein the device comprises a second pin member that obtains a signal, and the detected portion is provided at the other end of the second pin member. 5. Each of the tension ring forming and joining units further includes a support member for movably supporting the upper mandrel member, and a tear tab of the container lid between the container lid receiving area and the rolling area. hammer means for pressing the free end of the member against the surface of the vertical mandrel and a portion of the preform overlaid thereon; the second pin member of the detection mechanism is slidably disposed on the hammer means, and the detector is disposed between the preform receiving area and the container lid receiving area; 5. The device according to claim 4, wherein: