Wrap Foil Dispenser

Abstract

A wrap foil dispenser, comprising a base plate, provided with a channel, through which a blade glides. As part of a cutter assembly which glides along a guide, the blade slides and cuts the foil without touching the plate. The cutter assembly includes an arm which ensures that the blade engages the foil. In case the plate is laterally tilted or the cutter is slid by hand, the cutter assembly moves along a channel to which cutting edges of the blade are placed inside. When the blade is moved, the foil, placed on the upper side of the channel, is cut. The blade's vertical position is uniform as a result of the cutting assembly pressing through the arm's own weight which is limited by a buffer element. The dispenser may include a rotating support, provided with two conical elements that ensure mounting of foil rolls having various dimensions.

Claims

1. Wrap foil dispenser for foil rolls preferably wounded on a cylindrical core, comprising: a base plate 2 having two lateral walls 17 and 18, wherein, on the lateral walls 17 and 18 there are supporting elements 21 and 22, for supporting a rotating support 12, and also supporting elements 19 and 20 to fix a sliding guide 4, on which is glided a cutter assembly 5, provided with a blade 6 in the inferior side, the base plate 2 being provided with a channel 3, parallel with the guide 4, upon which the cutter assembly 5 is gliding, the peak point c of the blade 6 is positioned inside the channel 3, with the cutting edges a and b at a level established at the level of the plan of the plate, the foil roll being positioned upon the base plate 2, the level of the cutting edges of the blade being determined by a buffer element 10.

2. Dispenser according to claim 1 wherein the buffer element 10 has a shape of a disk that it is turning up upon a shaft 9 of the cutter assembly 5, the disk's radius defines the distance between the cutter assembly 5 to the plate 2 and the depth the blade 6 gets into the channel 3 of the plate 2.

3. Dispenser according to claim 1 wherein the cutter assembly 5 is a heavy element and it is pressed by its own weight, ensuring the pressing and the position of the blade 6 on the plate, respectively, the position of the cutting point c inside the channel 3, the result being the foil cutting, the weight of the cutter assembly 5 ensuring also the force, necessary for the lateral sliding on the guide 4, when the plate is tilted to one or the other end of the guide 4.

4. Dispenser according to claim 1 wherein the rotating support 12 comprises a support pipe 13 and two conical elements 24 having the peaks positioned face to face, each of them provided inside with a cylindrical hole g, allowing their mounting on the pipe 13, the distance between the two conical elements 14 mounted on the pipe 13 being adjustable.

5. Dispenser according to claim 1 wherein, it comprises a rotating pipe 25 placed between the rotating support pipe 13 and the sliding guide 4, in order to guide the foil 16 at the level of cutting edges of the blade 6.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Please find below examples of the embodiment of the invention, in accordance with the drawings FIG. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, representing:

[0013] FIG. 1view of the dispenser 1, having the cutter assembly 5 placed on the left side;

[0014] FIG. 2view of the base plate 2;

[0015] FIG. 3view of the cutter assembly 5;

[0016] FIG. 4view of the sliding guide 4;

[0017] FIG. 5view of the rotating support 12, equipped with the pipe 13 and the conical elements 14;

[0018] FIG. 6view of a foil roll 15, with an unrolled foil end 16;

[0019] FIG. 7perspective view of the dispenser 1, with the foil roll 15 placed on the rotating support;

[0020] FIG. 8view of the cutter assembly 5;

[0021] FIG. 9view of the cutter assembly's arm 7;

[0022] FIG. 10view of the disk 10;

[0023] FIG. 11view of the shaft 9;

[0024] FIG. 12view of the rotation bush 11;

[0025] FIG. 13view of the blade 6, its peak point c and the cutting edges a and b;

[0026] FIG. 14view of the sliding bush 8;

[0027] FIG. 15view of a conical element, respectively, full cone 24;

[0028] FIG. 16view of a conical element with cone 14 sections;

[0029] FIG. 17top view of the foil dispenser 1;

[0030] FIG. 18cross-sectional view C-C of the dispenser 1, according to FIG. 17,

[0031] FIG. 19top view of the dispenser 1 with the rotating pipe 25 installed with gougeons 23 at both ends;

[0032] FIG. 20view or the gougeons 23;

[0033] FIG. 21view of the rotating pipe 25;

[0034] FIG. 22view of the base plate 2;

[0035] FIG. 23view of the plate 2 with the guiding pipe 4, support pipe 13 and the rotating pipe 25;

DETAILED DESCRIPTION OF A PREFERENTIAL EMBODIMENT

[0036] In accordance with the invention, the wrap foil dispenser comprises a plate 2, provided with a channel 3, through which a blade 6 of the cutter assembly 5 glides along the channel. The cutter assembly 5 slides along a guiding element 4, having a pipe shape. The sliding guide 4 guides and supports the cutter assembly 5 along the channel 3.

[0037] The cutter assembly 5 is provided with an arm 7, preferably made of a heavy material, thus, by its own weight, it presses the blade 6 on the foil 16, that must be cut. The arm 7 has an adequate length, therefore between the cutting blade 6 and the sliding guide 4 will exist a distance that allows that a portion of unrolled foil to be caught by hand, after performing the cutting operation.

[0038] The base plate 2 has two lateral walls, i.e., the left wall 17 and the right wall 18, each being provided with supporting elements 19 and 20 for the sliding guide 4 and supporting elements 21 and 22 for the rotating support 12. The sliding guide 4 is positioned substantially parallel with the channel 3, thus, the cutter assembly 5 can slide upon it. When the plate is tilted laterally, the cutter assembly 5 will slide due to its own weight.

[0039] The dispersed cutter's weight force exceeds its friction force with the guide 4, therefore, the cutter assembly blade 6 moves along the channel 3.

[0040] The cutting operation is performed as follows: the foil 16 is placed on the upper side of the channel, the blade 6 enters the channel 3, thus, when the blade moves along the channel, the foil is cut.

[0041] Inside the channel, the blade's positioning on vertical direction is set by a buffer element, preferably a disk 10, component of the cutter assembly 5. The distance between the peak point c of the blade 6 and the bottom of the channel 3 is determined by the disk's 10 radius.

[0042] The cutter assembly 5, and thus the blade 6, is pressed by the arm's 7 weight. When the cutter assembly 5 moves laterally, along the channel 3, the disk 10 turns up on a shaft 9, which can be a screw, provided with a rotating bush 11.

[0043] The dispenser 1 comprises a rotating support 12, positioned on the supporting elements 21 and 22. These supporting elements can have the shape of some ribs placed on the lateral walls 17 and 18 of the base plate 2, thus, ensuring the easy rotation upon their axle, here represented by the support pipe 13. The rotating support includes in a preferred embodiment, two conical elements, i.e. cone shape 14, provided with a hole on the axle, through which the support pipe 13 is passing by friction. The conical elements can be of full cone type, in accordance with FIG. 15 or walls type, having conical shape, in accordance with FIG. 16. The full cone shape of the conical elements 14 allows mounting on the rotating support of foil rolls having various inner diameters, i.e. dimensions between the minimum and maximum cone's radius. Also, due to the mounting of the conical elements by friction, on the rotating support's pipe, foil rolls having various lengths can be mounted on it, by positioning the foil roll between the two cones, placed with the peaks face to face, top of the cone inside of the foil roll. The placement of the cones on the pipe is made by a forced movement, preferably by hand.

[0044] In a preferred embodiment, the wrap foil dispenser comprises a rotating pipe 25 which guides the end of the foil unrolled from the foil roll, below the lower part of the cutter assembly 5, and towards the peak of the blade 6, preventing the foil to be stuck by the arm 7 of the cutter assembly. In order to have smooth rotation of the rotating pipe 25, it has at the ends two gougeons 23 rotating in two holes 24 of the walls 17 and 18.

INDEX OF NUMERICAL REFERENCES

[0045] 1. Dispenser

[0046] 2. Base Plate

[0047] 3. Channel

[0048] 4. Guide

[0049] 5. Cutter assembly

[0050] 6. Blade

[0051] 7. Arm

[0052] 8. Sliding bush

[0053] 9. Shaft (Screw)

[0054] 10. Disk

[0055] 11. Rotating bush

[0056] 12. Rotating support

[0057] 13. Pipe

[0058] 14. Cone

[0059] 15. Foil roll

[0060] 16. Foil

[0061] 17. Right wall

[0062] 18. Left wall

[0063] 19. Supporting elements for the (sliding) guide 4

[0064] 20. Supporting elements for the (sliding) guide 4

[0065] 21. Supporting elements for the rotating support 12

[0066] 22. Supporting elements for the rotating support 12

[0067] 23. Gougeon

[0068] 24. Gougeon Hole

[0069] 25. Rotating pipe