FI90321C - Continuously operating device for aligning compressive or pulling force on a piece fed relative to the device - Google Patents

Description

1 90321

A continuous device for applying compressive or tensile force to a device to be fed relative to the device. - Kontinuer 1 iqt opererande anordning for inriktning av kompressions- oII.m dragkraft på ett stycke som matas i forhållande till anordningen.

The invention relates to a continuous device for applying a compressive or tensile force to a body to be fed to a part of a body at the respective device, using at least two pairs of rollers or the like belonging to the device which are spaced apart in the direction of movement of the body.

German application publication 2 160 257 discloses a pressing device of this type for use in the finger-jointing line of wood to continuously press the parts to be glued against each other. In order to reduce energy losses, a hydraulic system is arranged between the feed and the braking roller pair, comprising a hydraulic motor connected to the feed roller shaft, a hydraulic motor connected to the roller, a second hydraulic pump connected to the braking roller shaft and a second pump. The disadvantage of this known pressing device is its complicated and multi-component and therefore potassium structure.

The object of the invention is to provide a continuous device with the simplest possible structure, inexpensive and low in energy consumption for applying a compressive or attraction force to a device or the like to be fed with respect to the device, and which device can be used e.g. as a continuous clamp when making finger joint connections and as part of, for example, a continuous strength sorter for timber or other similar testing equipment.

2 90321 This object is solved according to the invention in such a way that the device according to the invention is characterized in that at least one pair of rollers or at least one roll is connected to the roll in a supported manner, and thus rotatably with the roll, with a rotational movement concentric with the roll in turn, it is arranged by means of mechanical transmission means to transmit said rotational movement to at least one roll of another pair of rollers or the like.

Other advantageous further developments of the invention will become apparent from the subclaims as well as from the following, in which the invention is described in more detail with reference to the accompanying drawing, in which:

Figure 1 shows a device according to the invention in a schematic side view.

Figure 2 shows a schematic plan view of a device according to the invention.

By means of the device schematically shown in Figures 1 and 2, a compressive or tensile force in the direction of movement of the body 1 is applied to the body to be fed from right to left in the figures. The device comprises two pairs of rollers 2, 3 which are spaced apart and through which the body 1 passes through the nips 4, 5. Each pair of rollers 2, 3 is arranged to apply a compressive force to be applied to the body 1 in the nip 4, 5. The compressive or tensile force is thus applied to the part of the nip 4, 5 between the direction of movement of the body 1.

The pair of rollers 2 comprises a top roll marked with reference number 6 and a lower roll marked with reference number 7. Correspondingly, the pair of rollers 3 comprises an upper roll denoted by reference numeral 8 and a lower roll denoted by reference numeral 9. It is, of course, clear that instead of individual rollers 6-9, groups formed by, for example, several rolls can be used, or the rollers can support e.g. a roller belt.

3 90321

A hydraulic motor 10 is arranged inside the roller 6, which is connected to the hydraulic unit 16 acting as a power source in a manner known per se. The body part of the motor 10 is connected to the jacket or end surface of the roller 6. At the same time, the shaft 11 of the motor 10 forms the rotation shaft of the roll 6 or a part thereof. The roller 6 is mounted so that it can rotate freely with respect to the shaft 11.

A chain wheel 12 is connected to the end of the common shaft 11 of the roller 6 and the motor 10, and a chain wheel 14 is connected to the shaft 13 of the roll 8, which form a fixed unit, respectively.

The operation of the device is as follows.

Syotettåesså piece 1 in the direction of arrow 17 nips 4, 5 låvitse, the rotary rolls 6-9 substantially one piece syottono-speed måårååmållå kehånopeudella. Now, when a force is applied from the hydraulic unit 16 to the hydraulic motor 10, the body part of which is thus supported on the roller 6 and rotates with it, the motor 10 exerts a rotating force on the shaft 11 which is transmitted through the chain 15 to the rotating force. The force thus applied to the roll 8 can act either parallel to the direction of rotation of the roll 8 or against the direction of rotation. In the former case, a traction force is applied to the part of the body 1 between the nips 4, 5 and in the latter case to a compressive force. Compression or traction is selected simply by changing the direction of rotation of the motor 10 and the amount of compression or traction by adjusting the power of the motor 10.

The power required by the device is very small, because the pairs of rollers 2, 3 produce forces, most of which are canceled out by internal forces acting on the body 1. In order to feed the piece 1, it is thus necessary to overcome, in addition to the normal frictional forces, only the difference of the forces 90321 applied by the powers 6 and 8 to the piece 1.

The invention has been described above essentially with reference to only one preferred embodiment thereof. However, it is in no way intended to limit the invention to this example only, but many modifications are possible within the scope of the appended claims. The device according to the invention can be used in addition to the compression of finger joint connections 18 in many other applications where a compressive or tensile force has to be applied to a continuously advancing body.

Claims (7)

A continuous device for applying a compressive or tensile force to a part (1) to be fed to a part of a part at the device in each case using at least two pairs of rollers (2, 3) or the like belonging to the device in the direction of movement of the part (1). spaced apart and through which nips (4, 5) the body (1) passes, characterized in that at least one pair of rollers (2) or at least one roll (6) is connected to the roll (6) in a supported manner, and thus the roll (6) a drive member (10) providing a rotational movement concentric with the axis of rotation of the roll (6), which in turn is arranged by means of mechanical transmission means (11-15) to transmit said rotational movement to at least 8 of the second pair of rollers. Device according to Claim 1, characterized in that the drive element (10) is a hydraulic motor. Device according to Claim 1 or 2, characterized in that the drive element (10) is arranged inside the roll (6). Device according to one of Claims 1 to 3, characterized in that the body part of the drive element is supported on the jacket and / or end surface of the roll (6). Device according to one of Claims 1 to 4, characterized in that the part to be rotated relative to the body part of the drive element (10) forms the rotation shaft (11) of the roll (6) or a part thereof. 5 90321 Device according to one of Claims 1 to 5, characterized in that the transmission elements (11-15) are formed on at least one of the sprockets (12, 14) mounted on the roller shaft (11, 13) to be rotated or rotated. , which are connected to each other by a chain belt 1a (15) or the like. 7 C ". Λ"? j