JPS59191530A - Device for binding metallic pull ring to vessel cap simultaneously with forming ring - Google Patents

Abstract

PURPOSE:To provide a titled device provided with a means which can form efficiently a cylindrical annular preform of a pull ring by the constitution in which an intermittently fed belt-like thin metallic sheet is sheared by a single static shearing blade and plural movable shearing blades and is curved and formed in the transverse direction. CONSTITUTION:Plural movable shearing blades 32 of a movable shearing means 26 are provided to a rotary support 30 attached integrally to a large-sized gear 28 provided on the lower side of a horizontal supporting plate 24, in a means 10 for forming the preform of a pull ring of a device for binding the metallic pull ring to a vessel cap simultaneously with forming the same. A belt-like thin metallic sheet 42 fed between said blades and a static shearing blade 36 of a static shearing means 34 provided to said plate 24 is passed through a guide slot 40, and is cut to a prescribed width by means of the edges 80 of the movable blades and the edge 84 of the static blade and at the same time the cut piece is formed into a preform 70 of a cylindrical annular shape by the pressing surface of the edges 80. Said sheet 42 is fed by each prescribed length to said slot 40 by a feed roll pair 46 actuated by an intermittent moving mechanism 60 which is driven by receiving the driving force from a large-sized gear 30 via a gear 68.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to an apparatus for forming a metal tensile link and simultaneously bonding it 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. . When opening this type of container lid, since there is a core that applies considerable force when pulling up the tear-off tab, it is necessary to make the tear-off tab long and attach an appropriate grip to make opening easier. It is measured. 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 a gripping piece is configured separately and connected to the tear-off tab by means such as dipping, riveting, or clamping, but these methods require a lot of time and effort during the process. This method is time-consuming, the connection portion is fragile, and failures such as breakage occur before the package is opened, and the manufacturing cost increases significantly.

In order to overcome this problem, the end of the thin metal plate is cut and simultaneously curved to form a cylindrical ring with overlapping ends, and the free end of the tear-off 9 tab of the container lid and the above-mentioned The container lid and the cylindrical ring are positioned so that a portion of the cylindrical ring overlaps each other, and the circumferential edge of the cylindrical ring is curled in the radial direction to form a ring, and the tear-off tab is inserted into the ring. A method and apparatus for manufacturing a container lid with a metal tension lid, which can be mass-produced at low cost by combining the two together, was developed by Guikanders GmbH1 in Sweden, and a patent application was filed. (% Gansho 31-/
3g! ! No. and % Gansho A; r-/31# Otsu No.).

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 annular pre-formed body; (2) a position where the pre-formed body is joined to the container lid tab piece; A means for supplying a pre-formed body; (a) a means for supplying a container lid; and (2) a tension forming and joining means for forming the pre-formed body abutted against the container lid tab piece into a tension cylinder and simultaneously joining this to the 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 annular pre-formed body is formed at a sufficiently high speed, and this pre-formed body is applied to the container lid tab piece as a tension ring. It is required to mold at a sufficiently high speed and to bond sufficiently firmly.

[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 tension ring having the above-mentioned structure, in which a preformed body is cut from a strip-shaped thin metal plate to form a cylindrical annular preformed body. The purpose is to improve the forming means.

[Key points of the invention]

The present invention provides a means for shearing and simultaneously curving a strip from an end of a thin metal sheet to form a cylindrical annular preform with overlapping ends, and a means for forming a cylindrical annular preform with overlapping ends, and a free end of a tear-off tab of a container lid and a means for bending the strip at the same time. The container lid and the preformed body are positioned so that a portion of the formed body is overlapped with each other, and the peripheral edge of the preformed body is curled in the radial direction to form a ring. In the apparatus for forming a metal tension cylinder and at the same time connecting it to a container lid, the preform forming means comprises a tension forming and connecting means for winding the tear-off tab into the ring and connecting the two, and the pre-formed body forming means is a metal band-like member. A strip metal thin plate feeding means that intermittently feeds the thin plate in its longitudinal direction by a distance matching the widthwise dimension of the strip, and a stationary shearing device having a single stationary shearing blade located at a predetermined shearing position. , the bale has several movable shearing blades arranged at predetermined distances in the circumferential direction on a rotating support body, and cooperates with the stationary shearing blades to cut the longitudinal tip of the strip metal sheet from one side edge to the other side edge. It is characterized by comprising a movable shearing tool configured to gradually shear toward , and to curve in the width direction.

[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.

First, the overall basic structure of the forming and joining device for 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 comprises a preform forming means 10, a preform supplying means/-2, a container lid supplying means/F, a tension link forming and joining means/2, and a container lid transfer means/g. , and a bond reinforcing means 20. The functions and operations of each of these means are outlined as follows.

The pre-formed body forming means/θ is of the form in which a strip of metal thin plate made of chrome-plated steel, tin plate, aluminum alloy, etc. is cut, simultaneously curved in the longitudinal direction, and both ends of the strip are overlapped with each other. A recessed annular preformed body is formed.

Next, the preformed body supplying means/2 supplies the preformed body forming means io
Receive the preformed body formed by the holding area A, B in the holding area Q1
It is transported between the arrows and taken out to the preformed body area C. on the other hand,
The container lid supply means/4' receives the container lid in the holding area;
Convey in the direction of the arrow and take it out to the container lid receiving area E. The tension forming and joining means /& receives the preformed body from the preformed body supplying means /λ in the preformed body distribution area C and conveys it in the direction of the arrow, and then supplies the container lid in the container lid receiving area E. means/l
The container lid is received from /-, and the container lid and the preformed body are positioned so that the container lid tab piece and a part of the preformed body are overlapped with each other, and then the peripheral edge of the preformed body is is curled in the radial direction to form a ring, and the container lid tag piece is rolled into this ring in the tensile ring forming and joining area G to join them together, and then transported to the discharge area H.

Furthermore, the container lid transfer means /f receives the container lid to which the tension ring is connected from the tension link and connection means /l in the discharge area H, transports it in the direction of the arrow, and carries it out to the transfer area (2). Then, the bond reinforcing means 20 receives the container cap to which the tension ring is bonded from the container lid transfer means IT in the transfer zone (3), transports it in the direction of the arrow, and in the pressure deformation zone J, connects the container cap tab piece with the tension ring. After applying pressure and deformation to the joint part with a part of the joint to strengthen the joint part (see Fig. 1), the joint part is conveyed to the delivery area.

Next, regarding the pre-formed body forming means which is the shaking part of the apparatus of the present invention, FIGS. This will be explained with reference to the figures.

In FIG. 3, the preformed body forming means /θ is equipped with a stationary support shaft λ, and a horizontal support plate 2 is attached to the upper end of the support shaft 22.
≠ is fixed, and a movable shearing tool 2B located below the support plate 2≠ is attached to 6A. Movable shearing tool 2B is
It includes a large gear 2g rotatably mounted on a support shaft 22 and a disc-shaped rotating support 3Q, and these gears g and support 30 are fixed to each other so that they can rotate as a unit. The outer periphery of the upper surface of the rotating support 30 is formed somewhat lower than the center of the upper surface.

A plurality of three driving shearing blades are fixed to the outer circumferential portion of the upper surface at equiangular intervals in the circumferential direction (see FIGS. 3 and 3).

Further, an opening (not shown) is provided at a predetermined position of the support plate 2, that is, at an angular position corresponding to the preformed body holding area indicated by reference numerals in FIG. A stationary shearing tool 34t cooperating with the shearing tool 2B is fixed.

However, the movable shearing tool 2B and the stationary shearing tool Jl are the same!
The structure and arrangement are as shown in the figures and FIG. That is, the stationary shearing tool 3≠ includes a rectangular stationary shearing blade 36 and a rectangular stationary guide restraining member 3t. The shearing blade 36 and the guide restraint member 3g are connected to each other so that their respective lower surfaces define a substantially horizontal common plane. A guide groove extending in the vertical direction is formed on the surface of the guide restraining member 3 that comes into contact with the shear blade 3t.
A guide slot 4to extending in the vertical direction is defined between the guide restraining member 3g and the guide restraining member 3g. The guide slot 4LO has a cross-sectional shape corresponding to the cross-sectional shape of the strip metal thin plate ≠ 2 to be sheared by the cooperation of the movable shearing tool 2B and the stationary shearing tool 31I-, and through this guide slot 11-0. The strip metal thin plate l/L2 is fed downward from above.

As shown in FIG. 3, the strip-shaped thin metal plate 2 is inserted into the guide slot ≠O defined in the stationary shearing tool 31/- through the pair of guide rolls and the pair of feed rolls 4t6. . In this case, between the pair of guide rolls 4t4t and the pair of feed rolls 6, there are provided a pair of guide groove wheels, SO, for guiding both side edges of the strip metal thin plate 2, and the pair of feed rolls I/ −
Similarly, between 6 and static shear 3≠, a strip metal thin plate≠
A pair of guide groove wheels that fully guide both sides of 2! λ is arranged.

The above-mentioned pair of feeding rolls≠6 constitutes the output end of the can-shaped thin metal sheet feeding means Shiro for intermittently feeding the strip metal thin sheet 4t2 by a predetermined distance.

That is, as shown in FIG. 3, one of the feeding rolls is attached to the frame body, 5
' It is fixed to a driven shaft 5 which is rotatably mounted on the shaft. This driven shaft! is connected via a joint t4t to an output shaft t of an intermittent movement mechanism to, which is arranged on the support plate 2≠ and has a well-known configuration. On the other hand, intermittent exercise machine 8
The input shaft t6 of 60 extends downward through the support plate 24t, and a gear 2g engaged with the two large gears of the movable shearing tool 2B described above is fixed to the lower end of the input shaft t6. There is. The large gear r of the movable shearing tool 2 is connected to a drive source (not shown) via an appropriate transmission mechanism, and continuously drives the movable shearing tool 2B to rotate at a predetermined speed in the direction of the arrow. As a result, the input shaft 66 of the intermittent movement mechanism tO rotates continuously via the large gear 2g and the gear 6g, and the input shaft 66 of the intermittent movement mechanism to
The output shaft 62 and the driven shaft connected thereto rotate intermittently by a predetermined amount.

Therefore, the feeding roll can intermittently feed a predetermined amount from above to below in synchronization with the rotation of the movable shearer. In this case, the feeding distance of the strip metal thin plates 4t, 2 seven times is set to the width direction dimension of the strip forming the preformed body 70 shown in FIG. g.

In this embodiment, in order to prevent the occurrence of defective products when forming the preformed body 70 described above, the detection input shaft 7 of the rotary encoder 7z is connected to the rotating shaft 72 of the guide roll pair +p via a joint 7. The rotation amount of the guide roll versus the guide roll is detected by the one-rotation encoder 7B connected to the ♂. As a result, the one-rotation encoder 7z has a guide roll pair≠
The feeding distance of the belt-shaped thin metal plate 4t2 can be detected by the amount of rotation of the belt.
It can be configured to output a warning signal when the number of feeding distances deviates from a predetermined range. Therefore, if a warning signal is generated by the rotary encoder 7B, even if the pre-formed body formed at this time is used to form the tension ring and join together with the container lid, the product will be defective. It may be configured to dispose of the container lid on which the tension link described above has been formed and bonded as a defective product in accordance with the timing at which the alarm signal is generated.

Next, the operation of forming the preformed body 70 by the cooperative action of the movable shearing tool 2B and the stationary shearing tool 3≠, which is the essential part of the present invention, will be described in detail with reference to FIGS. 5 to 7. do.

As mentioned above, in this embodiment, the movable shearing tool 3 is a rotating support 3 that is continuously driven to rotate in the direction shown by the arrow.
A plurality of movable shearing blades 3λ are fixed to the outer periphery of the upper surface of 0 (No. The band-shaped thin metal plate Hiroko is sheared in cooperation with the single stationary shearing blade 3z of the Hitoshi stationary shearing tool J['. Therefore, in the band-shaped thin metal plate≠2, after the stationary shearing blade 3t and one of the movable shearing blades 32 cooperate to form a preform, the next movable shearing blade 32 cooperates with the stationary shearing blade 3t. In the meantime, the tip of the band-shaped thin metal plate λ is sent downward by a predetermined distance beyond the lower surface of the stationary shearing blade 36.

The movable shearing blade 32 has a convex blade edge 10 defined by its upper edge on the front side as viewed in the rotational direction, and a blade edge g.
It has a convex pressing surface λ extending continuously from o.

Said blade edge g.

cooperates with the cutting edge edge ≠ defined by the lower edge of the surface of the stationary shearing blade 3B that is still in contact with the stationary guide restraint member 3♂,
The tip of the strip-shaped thin metal plate≠2 is gradually sheared from the inner end to the outer end in the radial direction of the movable shearing joint 26. In this case, the shapes of the cutting edges l and θ of the movable shearing blade 32 meet the requirement that the movable shearing blade 32 act on and shear the strip metal thin plate≠2 from the inner end to the outer end in the radial direction, as described above. In addition, during this shearing, a shearing action is actually applied to the strip-shaped thin metal plate 4t-2 at the cutting edge 10 so that a uniform shearing action is applied to the strip-shaped thin metal plate 11-2 over its entire width in the width direction. It is preferable that the shear angle α formed between the tangent line and the strip-shaped thin metal plate 412 at the location where the cutting edge is cut does not actually change over the entire length of the cutting edge ♂O. Incidentally, the α degree is as stated in the above-mentioned Japanese Patent Application No. 55 of 1973-/3.
20-35° preferably 2! ~300.

In addition, as mentioned above, the movable shearing blade 3.2 has a cutting edge edge.
The cutting edge ♂O of the movable shearing blade 32 works together with the cutting edge g of the stationary shearing blade 3z to gradually shear the tip of the band-shaped thin metal plate ll-λ from one side edge to the other side edge. Due to the shearing force applied to the tip of the strip metal thin plate≠2, the tip of the strip metal thin plate Go tends to curve from one edge toward the other ◇1j edge as the shear progresses.

In this case, each pressing surface r2 of the movable shearing blade 32 has one side edge (the side edge located on the left side in FIG. ) to the other side line (the side edge located on the right side in Fig. S) to promote the above-mentioned tendency to curve. Oshimenryo λ is the %a昭j♂i3gゆ! Through the lines described in the specification and drawings of the issue, the direction of rotation is forward in the direction away from the edge of the cutting edge O, zo, ko, ! It is convenient to have a zero slope. Therefore, the strip metal thin plate 4t-2
At the time when the tip of the band-shaped thin metal plate is completely sheared, the tip of the band-shaped metal thin plate Guko forms a cylindrical preformed body 70 in which the strip is curved in its longitudinal direction and both ends are overlapped with each other. 7 and g). As shown in FIG. g, the preformed body 70 formed in this manner has its upper edge slightly warped outward due to so-called shear warping during shearing. However.

This warp serves as an advantage when forming the preform 70 into a tension ring in the tension link forming and joining means.

As mentioned above, the preformed body 70 formed from the tip of the strip metal sheet≠- is separated from the strip metal sheet goo by the cooperation of the stationary shear blade 36 and the movable shear blade 3.2. It is located at the outermost position in the radial direction of the shearing position (see Fig. 7). This position corresponds to the preformed body holding area indicated by reference numeral A in FIG. 2, and the preformed body supply means/2 holds the preformed body 70 located in the preformed body holding area A. As shown in FIG. 7, the preformed body supplying means 7.2 may include a curved surface ♂♂ having a slightly larger diameter than the outer diameter of the preformed body 70 at the tip of the holder 6. A magnet 0 can be embedded in this curved surface so that the metal preform 70 can be attracted and held by magnetic force.

Further, in this embodiment, another pre-formed body forming means 1O configured in exactly the same manner as described above is provided symmetrically with respect to the pre-formed body supplying means/2 (see FIGS. 2 and 2).

As a result, the number of preforms 70 supplied to the common preform supply device/2 can be doubled, and the capacity for forming container lids in the tension forming and joining means can be increased.

The details of the respective configurations of the preform supplying means/2, the container lid supplying means/4'/tensile forming and joining means/l, the container lid transporting means/l, and the bonding reinforcing means 20 are the same as in the present application. The date is the % correction request for submission (21, (3),
+4), (5), (6) and (Since they are detailed in the specification and drawings of the above, their descriptions will be omitted in this specification, with reference to these specifications and drawings.

[Effects of the Invention] As is clear from the foregoing, in the present invention, the preformed body can be formed at high speed and reliably by the preformed body forming means having the above-described configuration. Therefore, the preformed body formed in this manner is supplied to the tension forming and joining means via the preform supplying means as described above, and the container lid is subjected to tension forming and joining through the container lid supplying means. supply means.

By forming and bonding the tensile ring together with the container lid, and then supplying the tensile ring to the bond reinforcing means via the container lid transfer means to apply pressure deformation to the joint between the tensioner and the container lid, it is possible to reduce the cost. It is possible to mass-produce container lids with metal tension links that have excellent strength.

[Brief explanation of the drawing]

FIG. 1 is a ff1F 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,
FIG. 3 is a partially sectional side view showing an embodiment of a preform forming means for forming a metal tensile conductor, which is a main part of the apparatus of the present invention; FIGS. 5 to 7 are plan explanatory views showing the coupling relationship between the body forming means and the preform supplying means adjacent thereto. A partial explanatory view showing a state in which a molded body is shear-formed, and Fig. g is a perspective view of a pre-formed body formed by the apparatus of the present invention. 10... Preformed body formation /2... Preformed body supply means /I... Container Mle feeding means 20... Bond reinforcement bio-killing 2-2... Stationary support shaft 241... Horizontal Support plate 26...Movable shearing 2 and...Dog type Sono single 30-
"°Rotating support body 3-!...Sada" dynamic shearing blade 3-Hiroshi
・・Static shearing blade 3z・Stationary shearing blade≠λ・・・・
Band-shaped thin metal plate 4...Guide roll pair≠6...
Feeding roll pair: 4 tons! Q... Guide Navy vs. J6.
...Frame body 5g...Driven shaft to...Intermittent motion mechanism z2...Output shaft t4t...Joint
6 B...Input shaft g, r90. gear wheel
7o...Preformed body 72...Rotating shaft 7Hiroshi...Joint 7 &, 99 rotation encoder 7...
Detection input axis rO...blade edge (movable) g2...
Retaining surface r≠...Blade edge (stationary) rz...Holder groove...Curved surface TaO...Magnet FIG, 1 FIG, 5 36 FIG, 6:, iz 6Z bu Fio, 7 FIo , 8

Claims (1)

[Claims] (1) A means for shearing and simultaneously curving a strip from an end of a thin metal plate to form a cylindrical annular preformed body with both ends overlapped, and a free end of a tear-off portion of a container lid and said preformed body. The container lid and the preformed body are positioned so that a portion of the preformed body is overlapped with 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 tensile link and connecting means for rolling the tear-off tab into the ring and connecting the two to a container lid at the same time, the pre-formed body forming means is configured to form a metal band. A strip-shaped gold ingot thin plate feeding means that intermittently feeds the thin plate in the longitudinal direction by a distance matching the widthwise dimension of the strip, and a stationary shearing tool having a single stationary shearing blade located at a predetermined shearing position. It has a plurality of movable shearing blades arranged at predetermined distances in the circumferential direction on the one-rotation support, and cooperates with the stationary shearing blades to move the longitudinal end of the strip metal thin plate from one side edge to the other side edge. A device for forming a metal tensioning ring and at the same time bonding it to a container lid.