FR2668136A1 - Method and device for delivering a sealing material equipped with a protective paper strip - Google Patents

Abstract

Method and device for delivering a sealing material equipped, on at least one of its faces, with a protective paper strip. The device comprises a horizontal plate (12) including an end (13) folded downwards, below which two spindles (20, 30) are arranged in the same horizontal plane, one of them supporting a grooved roller (3) and the other supporting a roller (2) rolling in the groove of the first one, the two spindles (20, 30) traversing the support plate (10) and connecting the rollers (2, 3) to two notched wheels driven in rotation in opposite directions by a belt notched on both of its faces and driven by an electric motor.

Description

 Ld present invention relates to a method and a device for unwinding a seal comprising a protective paper strip on at least one of its faces, such as a seal used in glazing, and in particular an intermediate seal used during the realization of '' multiple glazing.

 An intermediate seal is generally in the form of a ribbon of rectangular section, of sticky rubbery material, comprising a metal frame and covered on one of its faces with a strip of paper allowing it to be packaged in a reel without risking adhesion between the different turns of said coil.

 The handling of such a seal, due to its sticky nature, is not very easy, furthermore once it is detached from its strip of backing paper it is very easily deformable in traction, which leads to laying irregularities.

 The present invention makes it possible to remedy these drawbacks by proposing a method and a device of simple design, making it possible to unwind the seal directly from the coil where it is conditioned while separating it from the strip of protective paper, and usable during installation. manual or automatic seal.

 The process which is the subject of the invention consists in placing the seal on a flat surface, the protective paper being in contact with said flat surface, and in operating on the paper, at the end of said surface, a directional pull substantially perpendicular to that of said surface, causing both the separation of the paper from the joint and the advancement without deformation of the latter.

 The device object of the invention comprises for this purpose a vertical metal support plate secured to a frame and on which is mounted, at its upper central part and on a horizontal axis, a grooved roller in free rotation, in the vicinity of which is secured to the vertical support plate, tangentially to the upper part of the groove of said roller, a horizontal guide plate whose end opposite to said roller is folded down, forming an acute angle that is not cutting.

 Below and at a certain distance from said horizontal guide plate two axes arranged in the same horizontal plane support, one a grooved roller, the other an ovulating roller in the groove of the first. The two axes pass through the support plate and are connected to a device making it possible to drive the two rollers in rotation.

 Thus, by passing the seal to be unwound over the roller in free rotation, the protective paper being against said roller and on the horizontal plate, and by engaging the end of the strip of paper, previously separated from the seal for a short distance, between the rollers, the latter, by turning, pull down said strip of paper, which separates from the seal at the end of the horizontal plate and advances the latter without deforming it. It then suffices to apply the seal manually or mechanically.

 The device according to the invention is advantageously provided, on the one hand with means allowing the mechanism to be started or stopped on demand, and on the other hand by means making it possible to adjust the unwinding speed of the seal coil , mounted on the shaft of an engine.

 The advantages and characteristics of the present invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents a non-limiting embodiment thereof.

In the attached drawing
- Figure 1 shows a plan view of a device according to the invention.

 - Figure 2 shows a partial perspective view of the same device.

 If we refer to Figure 1 we can see that the device 1 comprises: a vertical support plate 10; a grooved roller 11 in free rotation; a horizontal plate 12 having a part 13 folded downwards at an acute angle; a roller 2 rolling in the groove of a grooved roller 3.

 The roller 2 is mounted on an axis 20 passing through an oblong orifice 14 formed in the support plate 10, and secured to a toothed wheel 21, and it is also freely fixed to the end of a rod 22 whose other end is pivotally mounted on an axis 23 integral with the support plate 10, a spring 24 applying the roller 2 to the roller 3, which is connected, by means of its axis 30 passing through the support plate 10, to a toothed wheel 31 .

 T, are two notched wheels 21 and 31. are driven in reverse rotations by a belt 41, notched on its two faces, and which is itself driven by an electric motor 4.

 The means for starting the device comprise a bar 5 pivotally mounted by one of its ends around an axis 50 integral with the support plate 10, and comprising at its other end a guide element 51, in which the seal separated from its protective paper strip. The rod 5 is returned upwards by a spring 52, so that a simple pull on the seal causes it to lift and trigger a contactor 53 secured to the support plate 10. The contactor is connected to the motor 4 and to motor 8 controlling the unwinding of the seal coil.

 The means for regulating the flow rate of the seal coil comprise a bar 6 pivotally mounted, not far from its upper end, around an axis 60 integral with the support plate 10, comprising at its lower end a roller 61 in free rotation , and at its upper end a spring 62.

The axis 60 and the bar 6 are provided with a potentiometer 63 recording the variations in rotation of said bar 6.

 If we now refer to FIG. 2, we can better understand the operation of the device 1.

 The coil 70 of seal 7 is mounted on the shaft 80 of a motor 8, the seal 7 is placed on the rollers 61 and 11 and on the plate 12, so that the strip of protective paper 71 is in contact with them , the seal 7 is then separated over a short distance from said strip of paper 71, which is slid between the two rollers 2 and 3, operation facilitated by the mobility of the roller 2, the end of the seal removed from the strip of paper 71 being introduced into the guide element 51 of the bar 5. The simple act of slightly pulling the seal 7 raises the bar 5 which triggers, through the contactor 53, the rotation of the rollers 2 and 3, and the unwinding of the reel 70. The paper strip 7 is then detached from the seal 7 at the folded end of the plate 12, and this pulling on the paper strip 71 is sufficient to advance the seal.

 As the reel 70 turns at constant speed, the seal unwinding 7 becomes progressively insufficient, which causes tension on the roller 61, causing the bar 6 to pivot, which affects the potentiometer 63, which consequently regulates the speed of the motor 8, and therefore the speed of rotation of the coil 70.

 It goes without saying that the present invention cannot be limited to the preceding description of one of its embodiments, capable of undergoing a certain number of modifications without departing from the scope of the invention.

Claims (3)

1) Method for unwinding a seal provided on at least one of its faces with a strip of protective paper, characterized in that a pull is made on the strip of paper, in a direction approximately perpendicular to the plane on which said said rests joint, this pulling having the effect of separating the paper from the joint and of advancing the latter. 2) Device for implementing the method according to claim 1, characterized in that it comprises a horizontal plate (12) having one end (13) folded downwards, below which two axes (20, 30 ) arranged in the same horizontal plane support, one a grooved roller (3), the other a roller (2) rolling in the groove of the first, the two axes (20, 30) passing through the support plate (10 ) and connecting the rollers (2, 3) to two notched wheels (21, 31) driven in reverse rotations by a belt (41), notched on its two faces, which is itself driven by an electric motor (4).  3) Device according to claim 2, characterized in that it comprises means for regulating the flow rate of the seal coil (70) consisting of a bar (6) pivotally mounted, not far from its upper end, around an axis (60) integral with the support plate (10), comprising at its lower end a roller (61) in free rotation, and at its upper end a spring (62), said axis (60) and said bar (6 ) being provided with a potentiometer (63) recording the variations in rotation of said bar (6) and thus regulating the speed of the motor (8) which controls the unwinding of the seal coil (70).