FR2503092A1 - DEVICE FOR ENTERING AND TRANSFERRING PRODUCTS IN AN ENVELOPING MACHINE - Google Patents

Abstract

THIS DEVICE IS ESTABLISHED TO CARRY OUT AND TRANSFER PRODUCTS 2 INTO A MACHINE DESIGNED TO WRAP THESE PRODUCTS. IN THIS DEVICE, MEANS 7 OR 13, 21 ALLOWING TO SEIZE THE PRODUCTS, HAVE THEIR GRIPPING ENDS EQUIPPED WITH ELASTIC ELEMENTS OR BUFFERS 9 OR 17, 24 EQUIPPED WITH AT LEAST AN INTERNAL CAVITY 10 OR 18. THIS CAVITY ALLOWS '' INCREASE THE DEFORMABILITY OF THE ELASTIC ELEMENTS WHILE ENSURING AN EFFECTIVE AND SENSITIVE GRIP ON THE PERIPHERY OF THE PRODUCTS TO BE SEIZED. THE INVENTION IS USED IN PARTICULAR IN THE FIELD OF CONFECTIONERY.

Description

The subject of the present invention is a device for taking and

  transfer products into a wrapping machine

  fragile or deformable products.

  This device is of advantageous application in the field of the confectionery industry, more specifically in the

  machines for wrapping fragile products such as

  good, chocolates, chocolate bars or the like.

  In these machines, the transfer of products is usually

  made by gripping devices consisting of

  pliers, or else by sets with pushers and counter-

  pushers animated with an alternative movement.

  These gripping members are equipped in their areas in contact with the products, rubber pads, or are still made of a similar flexible material, to thereby obtain a commitment and contact as sensitive as possible, with the

  products to seize. However, this goal is never achieved by

  satisfactory. Indeed, the use of buffers

  in all cases, to ensure contact

  sufficiently flexible and to grasp the product with delicacy,

  all in the case where the latter has curved surfaces.

  In the case of very soft pads, soft and porous rubber, the latter allow better handling of the products in question, but lead to their frequent replacement

as a result of their rapid wear.

  According to the present invention, it has been desired to

  gripping ganes of great duration and great sensitivity,

  to grasp products of all shapes in a delicate way.

  According to the present invention, the device for gripping and transferring the products in a wrapping machine comprises gripping means whose ends intended to engage the product, are provided with elastic elements, with at least one

  element provided with an interior cavity.

  To fix the object of the invention, without, however, limiting

ter, to the figures of the annexed drawing:

  FIG. 1 is a schematic side view of a device

  gripping of products, according to the invention;

  FIG. 2 shows the device in section according to the

II-II of Figure 1;

  FIG. 3 is a schematic side view of a device

  tif gripping according to an alternative embodiment.

  -2- According to Figure 1, there is illustrated as a whole, a

  wheel or turret (1) intended to effect the transfer and

  lopper products (2). This wheel (1) forming part of a

  China to wrap, not illustrated.

  Said wheel (1) comprises a disk-shaped element (3)

  supported axially by a horizontal shaft (4) animated by a movement

  intermittently rotating and driven by a motor member not shown. The element (3) is traversed along its periphery by a plurality of pivots (5) parallel to the shaft (4), on which are

  one end, arms (6) extending in a direction

  substantially radial, towards the outside of the wheel (1).

  The arms (6) are, in pairs, of tongs (7) provided

  symmetrically at equal angular distances, one

  port to another, and intended to seize the goods (2).

  The two arms (6) of each clamp (7) carry at their end

  free assembly, by dovetail assembly (8) or otherwise,

  elastic elements or buffers (9).

  Each tampon (9) made of rubber or other flexible material, has a cavity (10) which extends in said buffer,

  in a direction parallel to the shaft (4).

  Closing means, not illustrated and known, allow

  attempt to oscillate the arms (6) around their pivots (5) to cause the opening and closing of the clamps (7), whenever a product (2) is received by said clamps (7) or is took of. As illustrated in FIGS. 1 and 2, each clamp (7) is designed to receive and hold between the two buffers (9), during a wrapping operation, a product (2), together with a sheet covering (11) which is distributed to the

  wheel (1) in a manner not illustrated.

  As a result of the particular structure of the buffers (9), their engagement walls (12) are capable of deforming to perfectly match the contours of the products (2) they

hold.

  As illustrated in FIG. 3, the buffers thus defined can also be used for assemblies in which the gripping means comprise pushers and animated pushbuttons.

  of a rectilinear reciprocating motion.

  For this purpose, FIG. 3 represents a pushing member (13).

  comprising an axis (14) on one end of which is fixed a

  that (15) arranged perpendicularly.

  The plate (15) supports by dovetail assembly (16) or otherwise, a buffer (17), a cavity (18) receives at least one elastic member such as coil spring (20) disposed parallel to the axis (14). This spring (20) improves

  the adhesion of the gripping wall (19) to the product (2).

  The pressure exerted by the spring (20) on the wall (19) in no way affects the deformation capacity of the buffer (17)

  it makes it possible to obtain an elastic return of said wall (19) each

  than Month. a retained product is released, or when the cape cited / flexible material is weakened as a result of prolonged use. In the axial alignment of the pusher element (13), a counterpulcer (21) is provided, comprising an axis (22)

  one end of which is secured to a plate (23) serving as

  to a buffer (24) of conventional type and made in one

flexible.

  It must be considered that the combination of a buffer (17)

  cavity (18) and a solid buffer (24) ensures a

  sufficiently reliable products (2), in all cases where, as shown in Figure 3, they are not subject, when transferred, to a centrifugal force or other force likely to mc

change the position.

  It is also provided, without departing from the scope of the invention, to arrange the cavity formed in the buffers (9) or (17), in directions other than that indicated, to allow, according to the particular cases envisaged, a better adaptation. walls (12) or

(19) to the shape of the products (2).

  Similarly, in the case of products of relatively large dimensions, it can be provided several cavities distinct one

  on the other, arranged inside the buffers (9) or (17).

  The invention is in no way limited to that of these modes of application, nor to those of the embodiments of these various parts which have more especially been indicated; she

  on the contrary, embraces all variants.

-4-

Claims (1)

CLAIMS -1- Device for gripping and transferring products in a wrapping machine, comprising gripping means (7, or 13, 21) of said products (2) with at the end, elastic elements (9, or 17, 24), characterized in that at least one of said elastic members is established with one or more inner cavities (10 or 18). -2- Device according to claim 1, characterized in that the means for gripping the products are established respectively with an elastic member provided with an inner cavity. -3- Device according to any one of the claims   1 and 2, characterized in that the one or more elastic elements   -Eport one or elastic members (20) housed in their inner cavity. -4- Device according to claim 3, characterized in that the elastic member is a coil spring (20) whose two ends rest on the two opposite walls of the inner cavity.   -5- Device according to any one of the claims   1, 2, 3 and 4, characterized in that one or the elastic elements   are provided with a plurality of inner cavities.