DE101337A - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The aim of the new machine for the production of bottle caps by stepwise pulling the performance of such machines can be increased in particular by the fact that the Capsules are transported from one die to another by means of an automatic device.

The dies to be passed through by the capsule one after the other when pulling are arranged on a round table h cast onto the machine frame at equal intervals in a circle. The drawing punches, on the other hand, sit on the flange b _{1 of} a sleeve b, which is fitted onto the guide piece C ₁ seated on the machine frame c and can be displaced in the axial direction against the same. The sleeve is moved by a rod d _{guided in the neck C 1} , which is connected by the connecting rod f to the crankshaft e mounted in the base of the frame.

This type of drive and the guidance of the rod g require a short and stable construction of the machine as a result of the elimination of a special straight-line guidance, and also a perfect guidance of the sleeve b carrying the punch. The punches α and associated matrices are of the customary nature and the latter is provided with the device serving to outer the capsules, which is under the action of a spring.

One of the punches, O ₁ , which is used for the initial drawing, is at the same time provided with a device for punching out the sheet metal disks used to manufacture the capsules, which device has the following properties. The tin strip i is pulled off a drum k by a switching mechanism / and guided under the stamp. The switching mechanism is driven by an eccentric m seated on the crankshaft e and operated in such a way that when the punch α _{λ is moved,} the tin strip is advanced around the corresponding corn.

The punch a _x bears loosely on its circumference the ring-shaped knife n which is used to punch out the platelets and which is always pressed by a spring 0 against the ring-shaped projection ρ of the punch (J _1. When the latter goes down, the knife hits the punch at the same time remains at the Zinnband and now the further down-going from a bit _x back against the die, it DAF by the spring ο firmly against the tape is pressed, and therefore cuts the wafer. the latter falls in this case in the recess q and is thereon from the The punch U _{1 is} pressed into the die g ₁ , whereupon the resulting sleeve remains on the elevation h _{x of} the table h.

This first sleeve t is now. under the second punch and at the same time also the sleeve t pressed under each further punch automatically brought under the next following by the gripper r (Fig. 3), which are attached to the first eight punches in a circle on the ring s. The latter sits loosely on the lower part of the neck C ₁ and is automatically rotated back and forth once around a corresponding arc with every up and down movement of the punch α. This is the forward rotation

Claims (2)

caused by the curved piece u attached to the ascending and descending sleeve b (Fig. 2), which during the descent presses the roller U1 attached to the ring s to soap, while the fall of the ring can be brought about by a spring ν (Fig. 3 ), one end of which is attached to the ring 5 and the other end to the fixed neck C1 of the machine frame. If, for example, the slider b and therefore also the pawl u attached to it is in the companionway (FIGS. 1 and 2), the roller M1 is pushed to the side so that the ring s and all of the grippers r move forward. The curved piece u is now shaped in such a way that at the moment at which each gripper has reached the corresponding punch, the roller Zi1 and therefore also all the grippers come to a standstill. If, as the curve piece continues to descend, the punches penetrate the associated dies, the roller U1, sliding over the upper edge M2 of the curve piece under the action of the spring ν, can return, which is also followed by the movement of the ring s and all of the grippers. In order to enable this retraction of the roller M1, the arm M3, by means of which the pawl is attached to the slider b, must be bent and articulated, so that the pawl can hit the roller M1 with its rear side during the upward movement (Fig. 2a). . At the front of each gripper r an arched piece T1 is attached, which is articulated to the former, but is always held in an extended position against r by the spring rä located on the gripper. While the ring s is turned forward by the curved piece u, each gripper grasps the associated sleeve t with the arc-shaped spring r3 attached to the front part r1, which each time spans a little more than a semicircle, and guides it under the next punch. During the subsequent retreat of the ring s and the grippers r, the latter strike with the backs of their front parts T1 against the punches already in the dies, with the parts rx turning to the side until they hit the punches as the ring retracts further can hit past, whereupon they are brought back into the stretched position by the springs r2. In Fig. 3, the grippers r are drawn on the left in the position in which they evenly encompass the sleeves t lying under the punches with the springs r3, while the right side shows the grippers r in the forward movement. The first gripper is then drawn in the position in which it strikes past the first punch on its backward movement. For the movement of the grippers it is a condition that all sleeves come to lie in the same horizontal plane before and after they are pressed, i.e. H. at the same height as the sleeve tx pressed under the first punch. For this purpose, all the other matrices g (FIGS. 1 and 2) are placed in recesses in the table h. The in the same pressed sleeves t are stripped by the stripping device n> (Fig. Ι left) located on each punch from the punch and remain on the plates y movable in the bores /?., Of the table h, which are supported by the springs ■ {be pressed upwards. As soon as the punch α has left the die, each sleeve t is pushed up again by the plate y, so that all the sleeves come to lie in the same horizontal plane. Patent claims: 1. Machine to gradually !! Pulling bottle caps and the like, characterized in that the drawing punches arranged in a circle are attached to the flange (b _x ) of a sliding piece (b) which is moved up and down in the vertical direction in order to achieve an exactly vertical engagement, . which is guided in a straight line on a cylindrical approach (C ₁ ) of the machine frame. 2. Machine according to claim 1, characterized in that the sleeves to be drawn are automatically carried on from one punch to the other by means of grippers (r) attached to a ring, which are moved back and forth between two adjacent dies and the punch as it rises Guide the sleeves, which are gripped with a resilient clamp (r _s ), under the following punch, in order to then return to their initial position under the action of a spring while the punch penetrates the dies. 1 sheet of drawings.