JPH02200408A - Calender device for processing themoplastic resin - Google Patents

Abstract

PURPOSE: To obtain a calender apparatus extremely simple in plan by positioning the vertical axial lines of two first calender rolls and the vertical axial line of a third calender roll on the same plane, pref. an almost horizontal surface. CONSTITUTION: The vertical axial line of a calender roll 3 second from the last is fixed and the vertical axial lines of calender rolls 1,2 are positioned on the same plane, pref., an almost horizontal surface and the calender rolls can be moved only in the direction parallel to those axial lines within the plane shown by an arrow F1 and the vertical axial line of other calender roll 4 is moved within the plane almost vertical to the plane shown by an arrow F2. The vertical axial line of the single calender roll 4 not positioned on the almost horizontal surface can be additionally adjusted to an oblique direction in parallel to the plane shown by an arrow F3. As a result, by altering the setting of the energizing of the calender roll 4, the thickness uniformity of a rolled product can be easily adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is particularly suitable for processing thermoplastics to produce flexible or rigid films or sheets, optionally lined with a substrate. BACKGROUND OF THE INVENTION 6. Prior Art Calendering technology is of particular interest in the industrial production of products made in particular from optionally plasticized resins based on vinyl chloride.

Many types of calender devices that can be used for this purpose have already been proposed, particularly L-type, F-type, ■-type, 2-type and similar types of calender devices.

In addition to this, Belgian patent no. A roll calendaring device is disclosed.

However, it appears that all calendaring devices proposed to date have some drawbacks which are not insignificant.

Therefore, some types of calendering equipment cannot be used equally well for processing granular hard resins or plasticized resins, and some are difficult to adjust (or difficult to clean. , in other forms of calendaring devices,
It is necessary to rely on heavy structures to mechanically support a series of vertically stacked calender rolls.

OBJECTS OF THE INVENTION The objects of the invention are therefore equally suitable for processing hard and plasticized resins and further offer a number of advantages which will become clear in the detailed description given below. The object of the present invention is to provide a calendar device that is very simple in design.

Structure of the Invention The invention therefore comprises a supporting bridge of at least four calender rolls arranged in series and a feeding device, with a predetermined support bridge arranged above and between the first two calender rolls. In a calendering apparatus for processing thermoplastic resins, the longitudinal axes of the first two calender rolls and the longitudinal axes of the third calender roll are on the same plane, The present invention relates to a calender device for processing thermoplastic resins, which is preferably located on a substantially horizontal plane.

According to a preferred embodiment, the longitudinal axes of the first two calender rolls and of the at least third calender roll are located in a completely horizontal plane, but if necessary at an angle of 30 degrees to the horizontal plane. It is clear that the plane may preferably form an angle of 20 degrees,
This makes it possible in particular to avoid the problem of feeding the material to the calender device. Furthermore, it is not at all impossible to offset one of the longitudinal axes of these rolls slightly parallel to the plane defined by the longitudinal axes of the other calender rolls.

In the calendering device according to the invention, it is further provided that the longitudinal axes of the last two calender rolls are located on the same plane, which is approximately perpendicular to the plane defined by the longitudinal axes of the first two calender rolls. Preferably, "substantially perpendicular" means that the angle formed by these planes is 60 degrees, 120 degrees,
This means that it can be varied at a preferred angle between 90 degrees.

The calendering device according to the invention and the advantages resulting therefrom will be explained in more detail in the following description of three preferred specific embodiments. In this example.

Reference is made in turn to FIGS. 1, 2 and 3 of the accompanying drawings.

EXAMPLE In a first preferred embodiment shown in FIG. 1, the calender device comprises four calendar rolls (
1, 2, 3 and 4), the longitudinal axes of the first three calender rolls (1, 2.3) lie in the same horizontal plane and the last calender roll (1, 2.3) The longitudinal axis of the roll 4 is located above the longitudinal axis of the third calender roll 3 with respect to the plane defined by the longitudinal axes of the first three calender rolls (1, 2 and 3) together with the third calender roll 3. arranged to define a vertical plane.

As can be seen in FIG. 1, the calendering device also constitutes a device for supplying the material to the calendering device, and has a predetermined contoured side material plate 7 arranged above and between the first two calender rolls. It is equipped with This calender device is also securely attached to the bridge 6 and has a working through passage 8 which facilitates access to the top side of the calender rolls (1, 2 and 3) and the rear side of the calender roll 4.
It is equipped with

Finally, a device for taking off the rolled thermoplastic consisting of small rolls (9, lOl and 11)
Arranged facing the penultimate calender roll 3 and above this take-off device, an infrared heating device 12 is provided for the purpose of preheating the rolled sheet so that it can, for example, be serially processed. is provided.

In a second preferred embodiment shown in FIG. 2, the calendering device comprises five calendar rolls (one
' , 2', 3', 4', 5°) with bridges 6 supporting the first four calender rolls (1', 2', 3', 4°). The vertical axes of the last calender roll 4° are located on the same horizontal plane, and the vertical axis of the last calender roll 4° is located below the vertical axis of the fourth calender roll 4°.
along with the first four calendar rolls (1”, 2’
, 3', 4°) so as to define a plane perpendicular to the plane defined by the longitudinal axis.

As can be seen in FIG. 2, the calendering device also includes two side plates 7 for the material with a predetermined contour, a device (9, 1O111) for taking off the rolled thermoplastic resin, and the calendering device shown in FIG. Infrared heating device 12 similarly arranged
It is equipped with.

In a third preferred embodiment, shown in FIG. The vertical axes of the first, second and fourth calender rolls (1", 2", 4") are located on the same horizontal plane, and the vertical axes of the third calender roll 3" are located on the same horizontal plane. the axis is located below the longitudinal axis of the second calender roll 2'';
arranged so as to define a plane perpendicular to a plane defined by the longitudinal axis of the first, second and fourth calender rolls (l"2", 4") together with the longitudinal axis of the second calender roll 2",
Further, the vertical axis of the last calender roll 5'' is located above the vertical axis of the fourth calender roll 4'', and the vertical axis of the fourth calender roll 4'' as well as the first, second and fourth calender rolls are located above the vertical axis of the fourth calender roll 4''. They are arranged so as to define a plane perpendicular to the plane defined by the vertical axes of (1'', 2'', 4'').

As can be seen in FIG. 3, the calendering device also includes side plates 7 for the material with a predetermined contour, devices (9, 10, 11) for taking off the rolled thermoplastic, and An infrared heating device 12 arranged similarly to the calendar device shown in the figure is provided.

In the three embodiments described above, the calender rolls may have the same or different diameters.

A calender device according to the invention, particularly a preferred embodiment, comprises:
Provides the following benefits:

(1) Ease of installation In these devices, the vertical axis of the penultimate calender roll (3, 4', 4") is fixed, and the vertical axis of the calender roll (1, 2, l', 2", 3") ', l'' and 2'') lie in the same plane, preferably in a substantially horizontal plane, and may only move within this plane in directions parallel to their axes, as indicated by the arrow Fl. The vertical axes of the other calender rolls (4, 5', 3", 5") are
It is possible to move in a plane approximately perpendicular to this plane as shown by arrow F2. Add to this a single calender roll (4 rolls) preferably not located on a substantially horizontal plane
, 5', 3'', 5°'') can be additionally adjusted obliquely parallel to this plane, as shown by arrow F3. As a result, the calender rolls (4, 5
The uniformity of the thickness of the rolled product can be easily adjusted by changing the settings of the A-forces in (3", 5"), which interferes with the settings of other calender rolls. (The thickness of the further rolled product is
Calendar roll (1, 2, 1', 2', 3.1", 2
”) or by the vertical movement of the calender rolls (4,5゛3”,5”). In particular, this setting allows the supply rolls (1,
2, 1', 2'', 1'', 2''), and as a result, the material side plates 7 with a predetermined contour can be made from a single piece.

(2) Ease of supply In the calender device according to the present invention, the supply rolls (1, 2
, bi, 2', l'', 2'') are located on a horizontal plane and are not in contact with other calender rolls, which easily allows for adjustable feeding. In addition, since these supply rolls are on a horizontal plane, the material side plates 7 with a predetermined contour can be made from a single part.
It does not need to be made of two movable parts, as is the case when the setting of the calender rolls leaves a vertical offset between these rolls.

(3) Full length surrounding the calender roll Figures 1 to 3
As can be seen in the figure, when considering the hatch area, the rolled sheet has a force [the total length surrounding the non-groove rolls is equal to 1 calender roll, 1.5 rolls, and 1 calender roll, respectively; - thereby reducing the risk of thermal deterioration of processed thermoplastics.

(4) Versatility The calender device according to the invention is very suitable for processing plasticized or unplasticized thermoplastic resins. In particular, depending on the arrangement of the calendar rolls,
Plasticizer vapors generated at any point do not deposit on the processed product; the same is true for any granular thermoplastic.

(5) Cleaning of the Calendar The upper part of the calendar roll has sufficient space and is easy to clean, especially because of the work passage 8. Furthermore, the lower surface of the calender roll is also easily accessible, especially when a pit is provided below the calender device.6 (6) Crosslinking and Accessories The calender device according to the invention can be Because of the arrangement, the structure supporting the rolls can reduce its weight, which makes it possible to shorten the equipment for taking off the processed product, and also allows for auxiliary sheeting and lubrication. The conduit can also be shortened. Additionally,
Removal and replacement of the calender rolls is made extremely easy.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a calendering device with four calender rolls according to the invention. FIG. 2 is a sectional view of a calendering device equipped with five calender rolls according to another embodiment of the invention. FIG. 3 is a sectional view of a calendering device equipped with five calender rolls according to yet another embodiment of the present invention. l to 4... Calendar rolls 1" to 5"... 〃 1" to 5"... 〃 6... Frame 7...Both side plates for material 9 to 11... Take-up roll 12... Infrared heating device

Claims (9)

[Claims] (1) A structure that supports at least four calender rolls arranged in succession and a supply means, and
In a calendering device for thermoplastic resin processing, the first two calender rolls (1, 2, 1', 2', 1'' , 2") and at least a third calender roll (3, 3', 4, 4").
are located on the same plane, preferably on a substantially horizontal plane, and the last two calender rolls (3, 4, 4'
, 5', 4", 5") are approximately perpendicular to the plane defined by the longitudinal axes of the first two calender rolls (1, 2, 1', 2', 1", 2"). A calender device for processing thermoplastic resin characterized in that it is located on the same plane. (2) The longitudinal axes of the first three calender rolls (1, 2, 3) are located on the same plane, preferably a horizontal plane, and the longitudinal axis of the last calender roll 4 is parallel to the longitudinal axis of the third calender roll 3. Four calendars, characterized in that they are located above and, together with the third calendar roll 3, define a plane perpendicular to the plane defined by the longitudinal axes of the first three calendar rolls (1, 2 and 3). The calender device for processing thermoplastic resin according to claim 1, comprising a roll. (3) First four calendar rolls (1', 2', 3
', 4') are located on the same plane, preferably on a horizontal plane, and the longitudinal axis of the last calender roll 5' is located on the fourth
The fourth calendar roll 4' is located below the vertical axis of the calendar roll 4'.
Five calendars characterized by defining a plane perpendicular to a plane defined by the vertical axis of the first four calendar rolls (1', 2', 3', 4') together with the calendar roll 4'. The calender device for processing thermoplastic resin according to claim 1, comprising a roll. (4) First, second and fourth calender rolls (1”, 2
``, 4'') are located in the same plane, preferably on a horizontal plane, the vertical axis of the third calender roll 3'' is located below the vertical axis of the second calender roll 2'', and the vertical axis of the third calender roll 3'' is located below the vertical axis of the second A plane perpendicular to the plane defined by the vertical axis of the first, second and fourth calender rolls (1'', 2'', 4'') is defined along with the vertical axis of the calender roll 2'', and 5" is located above the longitudinal axis of the fourth calender roll 4", and along with the longitudinal axis of the fourth calender roll 4" the first, second and fourth calender rolls (1", 2 4. The calender device for processing thermoplastic resin according to claim 1, comprising five calender rolls, each of which has a plane perpendicular to the plane defined by the longitudinal axis of the roller. (5) Penultimate calendar roll (3, 4',
Calendar rolls (1, 2
, 1', 2', 3', 1" and 2") can be moved in this plane and parallel to their axes, and the longitudinal axes of the other calender rolls (4, 5', 3 5") is movable in a plane approximately perpendicular to this plane.
4) The calender device for processing thermoplastic resin according to any one of the above. (6) The longitudinal axis of a single, preferably non-substantially horizontal calender roll (4, 5', 3", 5") is additionally adjusted in an oblique direction parallel to this plane. Claims (1) to (5) characterized in that
The calender device for thermoplastic resin processing according to any one of the above. (7) The calender device for processing thermoplastic resin according to any one of claims (1) to (6), wherein the material side plates 7 having a predetermined contour are made of a single component. (8) Device for taking over rolled thermoplastic resin (9
, 10, and 11), and the take-up device is arranged facing the penultimate calender roll (3, 4', 4''). (7
) The calender device for processing thermoplastic resin according to any one of the above. (9) The calender device for processing thermoplastic resin according to any one of claims (1) to (8), wherein the calender rolls have the same diameter or different diameters.