JP4813715B2 - Apparatus for laminating a laminated structure of at least two plastic strips into sections - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for laminating a plastic laminate structure for producing a plastic card along a transfer path, the laminate structure comprising at least two plastic strips having panels formed continuously ( 1) and; a heating device and a cooling device which are provided on a common support (14) and which are formed by press elements which are individually temperature-controllable and correspond to an integral number of panels and which are arranged in succession; It can be driven intermittently in the transfer direction, and the pressure bands facing each other are spaced apart, and the plastic strip can be moved between the pressure bands through the heating device and the cooling device for each section. A laminate comprising at least two plastic strips, each having a continuously formed panel An apparatus for laminating a granulated body for each segment.
[0002]
[Prior art]
EP-B-0134820 describes a continuous manufacturing method for plastic cards, in particular, credit cards, check cards, access cards and the like. Here, it is allowed to synchronize and supply plastic strips (strips) into the slab to form a laminate. The strips are made up of individual panels, separated one by one and arranged one behind the other in one or more rows.
This laminating equipment has heating and cooling devices arranged on a long support and formed by temperature-adjustable pressing elements. This dimension of the pressing element is selected for subsequent processing of an integral number of panels, allowing baking of the sections of plastic strip forming the laminated structure and subsequent cooling. Due to the arrangement between the endless pressure bands facing each other, which are driven cyclically, at least two plastic strips move to the processing area of the pressing element. There, heating-pressure effects and cooling-pressure effects occur in the plastic strip . As a result, the plastic strip is thinned, i.e. laminated, for each section. For this purpose, the pressing elements each have a fixed lower pressure bar and a movable upper pressure bar. Between them, a pressure band comes into contact during the heating or cooling-pressure treatment. However, this has been found to have drawbacks. It has been shown that in the case of rapid processing, temperature-controlled webs generate large local expansions or contractions for the pressure band and the plastic strip because of the high temperature of the laminated plastic strip. Also, the plastic strip is fine, particularly at the edge of the pressure zone, and there are many discontinuous temperature and pressure conditions. This results in a large load with compressive force and tension. And there exists a possibility that a pressurization band may be damaged, and these are conditions on having high durability. If the production volume increases, the time used for heat treatment is minimized, but higher temperatures are used to compensate for this and disadvantageous wear increases. In addition, defects on the laminate occur in the panel, increasing the proportion of undesirable defects. This is because the surface of this type of plastic card is strongly required to be defect-free.
[0003]
DE-C-4205746 describes an apparatus for adhesively bonding sheet-like workpieces, in particular for hiding plastic members with sheets. In this, a loading unit, a heating unit, a pressurizing unit, and a cooling unit provided outside the pressurizing unit are sequentially arranged. The workpieces that are to be adhesively bonded are individually and sequentially passed by the lower transfer belt first through the heating section and then through a pair of pressure rolls in the pressure section. The pressure unit is separated by a pair of pressure rolls of the pressure unit, and at the same time, serves as a turning roller for the transfer belt and does not move with respect to the transfer path. The heating part has two heating plate units, each of which has a link chain including a plurality of chain links, on which a transverse support is provided, which is related to the transport direction. Crosses and has heating elements. The links of the link chain are connected to a drive cylinder via intermediate links on both sides and via a drive shaft. By activating this cylinder, two link chains of the heating plate unit are formed. In this case, they are either parallel to each other, either substantially swollen in the same direction, or sag in a wedge shape. Although the link plate of the heating plate unit is adjustable, this adjustment fixes a properly defined position of the drive cylinder and thus does not allow a movable arrangement of the heating element or the pressure part, and It does not allow movement in the direction of the transfer path. There is no cooling press. The position of the chain link is fixed.
[0004]
[Problems to be solved by the invention]
The present invention improves the above-mentioned drawbacks in known laminate manufacturing equipment such as plastic cards.
[0005]
An object of the present invention is to provide an apparatus for laminating a laminated structure composed of at least two plastic strips for each section , which is highly productive and enables the production of a plastic card having a high laminate quality. .
[0006]
Furthermore, the object of the present invention is to provide a laminated structure consisting of at least two plastic strips having panels formed continuously; provided on a common support and corresponding to an integral number of panels, individually A heating device and a cooling device, which are formed by temperature-controllable pressing elements and are arranged in succession; they can be driven intermittently in the direction of transfer and are arranged with pressure bands facing each other spaced apart. A drive unit in which the plastic strip is movable between the pressure bands by way of the heating device and the cooling device between sections; consists of at least two plastic strips with continuously formed panels an apparatus for laminating on the classification of the laminated structure, the press elements, anti restoring force acting in the direction of their initial position It is accomplished by being arranged so as to be movable in the direction of the transfer path Te.
[0007]
The present invention provides an apparatus for laminating a laminated structure into sections. This laminated structure consists of at least two plastic strips. This has a panel (for example, a rectangular plate-like body) formed continuously in order to manufacture a laminated structure along the transfer path. This device transfers local changes caused by temperature in the length direction of the pressure band to the position of the press element. This allows the pressing element to follow an axial displacement, thereby allowing compensation to occur. As a result, undesirable longitudinal loading of the pressure band and plastic strip is avoided. Therefore, it is possible to operate at a high temperature in a short cycle time without any trouble.
[0008]
The advantage of the above case is that the device reacts directly by incorporating the dissipation of axial strain forces in the design. As a result, a complicated controller for this purpose can be omitted.
[0009]
The apparatus of the present invention effectively relaxes the bonding of adjacent press elements. As a result, the pressing elements can slightly change their mutual distance in the direction of the transfer path. This allows pressure bands and plastic strips that are driven periodically or intermittently to contact them. They are exposed to locally different temperatures because of the press elements that are precisely located on the press elements and controlled at different temperatures. As a result, the stress acting on the pressure band or plastic strip is greatly reduced.
[0010]
According to an advantageous arrangement of the invention, when the production is stopped, the lifting device for lifting the upper pressure bar can be activated to further open the press element. The opening action of the upper pressure bar is small in normal operation and allows the pressure band to advance. A lift device is also provided. This simultaneously raises the pressure band in order to interrupt the contact bridge between the pressure band and the lower pressure bar during the opening of the press element when production is stopped. In such a situation, the pressure band is displaced to a substantially central position between the lower and upper pressure bars. As a result, undesirable overheating of the pressure band is avoided. This is because the pressure band serves only as a heat transfer means during the heat-pressure process. This significantly increases the service life of the pressure band. In particular, overheating of the plastic strip can be effectively prevented in case of failure or maintenance. Otherwise, a wide range of setting up work is required.
[0011]
The pressure band is in each case expediently arranged over the inlet and outlet drums provided outside the pressing element. At least one of these drums has a perimeter with a precision spike, which is combined with a transfer perforation provided at the edge of the assigned pressure band to apply pressure. It is designed to drive the band. This spike portion allows alignment and slip-free guidance for accurate registration of the pressure band. The height of this spike is about 0.5 mm. The spike has a round shape upward. Each drum preferably has a portion with spikes, the inlet drum and outlet drum being offset from each other to avoid the spikes colliding with each other, in a so-called offset relationship. is there. The drum offsets in the inlet side region and the outlet side region are preferably equal and in the same direction. As a result, an equivalent band can be used for both pressure bands.
[0012]
Further advantages and features of the present invention will become apparent from the following description and claims.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail with reference to the following examples and drawings.
FIG. 1 shows an apparatus for laminating a laminated structure 1 in sections. This laminated structure is composed of at least two plastic strips having panels (for example, rectangular plate-like bodies) formed continuously . This is shown as a substation of an apparatus that produces plastic cards along the transfer path. The plastic strips forming the laminated structure 1 are supplied in synchronism and the various plastic strips to be laminated pass through different processing stations in advance. Here, the panel may include a hole for synchronization, a printed image for manufacturing a plastic card according to an intended purpose, an information holding body, punched perforation, and the like. The average thickness of the plastic strip to be processed depends on how many plastic strips form the laminated structure 1, but is preferably on the order of about 0.1 to 3 mm. The thickness of the finished plastic card is usually about 0.8 mm. In order to refine the transparent film strip on the upper side, the lower side and the two intermediate printed inserts, the four plastic strips are preferably used to form the laminated structure 1 Bring together.
[0014]
Once at least two plastic strips are brought together, they form a laminated structure 1, which runs in the nip between the two pressure bands 2,3. These pressure bands 2 and 3 are placed on the two uninterrupted input drums 4 and 5 and on the output drums 6 and 7, respectively, and are formed by endless bands facing each other. At least one band, for example the lower band, is driven incrementally and during its circulating movement, if the other bands are not driven synchronously, the laminated structure 1 and other With a band. At these outer edges, the pressure bands 2, 3 have perforations that are continuously transferred. This meshes with the spiked portions of the four drums 4, 5, 6, 7 respectively, and sets a clear, relatively unchangeable position. In order for the pressure bands 2, 3 to act as a slip-free transfer carrier for the laminated structure 1, a device for transfer aligned in the transfer direction is provided. In this case, this type of device is a pin that is provided on at least one pressure band and couples to the aligned alignment holes of the laminated structure 1 and other pressure bands. As an alternative, an adhesive bonding device can be used. This sets the position of the laminated structure 1 between the pressure bands 2 and 3. The operation of the pressure band with the pins and the transfer perforation results in the exact position of the laminated structure 1 in the heating device and the cooling device as shown below. As a result, the surfaces of the pressure bands 2 and 3 facing the laminated structure highlight the surface of the laminated structure.
[0015]
The heating devices 8 and 9 and the cooling devices 10 and 11 provided continuously along the pressure bands 2 and 3 are formed by pressing elements capable of controlling the respective temperatures. The number of heating devices 8, 9 and cooling devices 10, 11 arranged adjacent to each other can be selected. These heating devices 8, 9 and cooling devices 10, 11 are spaced apart from each other so that the heating devices and cooling devices 8, 9, 10, 11 are actuated by the integer numbers of the panels, respectively. According to the interval of the panel of the laminated structure 1.
[0016]
The heating devices 8 and 9 and the cooling devices 10 and 11 are designed as pressing elements. In any case, the upper pressure bar 12 and the lower pressure bar 13 are provided. Between the pressure bar 12 above and the pressure bar 13 below the press elements, the laminated structure 1 is guided between the two pressure bands 2 and 3 and travels in the transport direction. This direction is the direction from right to left in FIGS. The pressing elements designed as heating devices 8, 9 can be heated electrically or by a temperature-controllable fluid. On the other hand, the pressing elements designed as cooling devices 10, 11 are preferably cooled with water. As an alternative, upper and lower dies can be provided for the heating devices 8, 9 and the cooling devices 10, 11, respectively.
[0017]
FIG. 1 shows a pair of pressure bars 12, 13, respectively, in the closed position of the press element for a pressure-controllable pressure treatment of the laminated structure 1. At least the upper pressure bar 12 is movable in the form of a die to exert a compressive force on the lower pressure bar 13. After completion of the temperature-controllable pressing process, the pressing elements are released by slightly raising the pressure bar 12, respectively. And the pressurization bands 2 and 3 with the laminated structure 1 processed for every division progress to a transfer direction. For example, the section of the laminated structure 1 processed by the heating devices 8 and 9 moves to the region of the cooling devices 10 and 11.
[0018]
In normal operation, to move the temperature, the upper pressure bar is raised by a small amount, the pressure band is displaced, and the upper pressure bar is lowered again. When the production is to be stopped, the wide open part of the upper pressure bar 12 is detected by the control device 30 and, in particular, is started and determined by the latter. This activates the raising devices 31 and 32 to raise the pressure bands 2 and 3. This provides contact between the lower pressure bar 13 and the pressure bars 12, 13 when the press element is wide open. The raising devices 31 and 32 are formed by lifts provided on the inlet and outlet sides of the heating devices 8 and 9 and the cooling devices 10 and 11. And as FIG. 2 shows, it can move upwards by a perpendicular | vertical member compared with the disengagement position regarding the pressurization bands 2 and 3. FIG. As a result, the pressure bands 2, 3 extending between the pressure bars 12, 13 of the press element have a clear contact with the lower pressure bar 13 along the processing area divided by the heating and cooling devices. And is preferably brought to an elevated intermediate position between the two pressure bars. At this time, the upper pressure bar 12 is wide open or wide open. The distance from the lower or upper pressure bar 13, 12 to the pressure band 2, 3 is preferably between 1 cm and 35 cm.
[0019]
As an alternative to the lift shown in FIGS. 1 and 2, other lift devices such as compressed air actuators can be used.
[0020]
Each pressing element is individually adjustable with respect to the temperature and pressure applied thereto, and the laminated structure 1 remains between the presses for the heating and cooling process. This temperature and pressure are chosen so that the baked and cooled laminated structure 1 forms a stable laminate. Due to the progressive advancement of the laminated structure 1, the press is slightly opened in each case. Then, the portion of the laminated structure 1 processed by the heating devices 8 and 9 is cyclically advanced to the processing region of the cooling devices 11 and 12, and the laminated structure 1 is preferably divided into one section through a heating process and a cooling process. Run one by one. The duration of the heating and cooling processes determines the circulation time.
[0021]
The heating devices 8 and 9 and the cooling devices 10 and 11 are provided on a common support 14. This sets up the respective pressing elements of the heating devices 8, 9 and the cooling devices 10, 11 so that they can be displaced on the shaft against the restoring force. The lower pressure bar 13 is provided on the support 14.
[0022]
In FIG. 1, the support 14 is designed as a straight and long support, and is supported at both ends by supports 15 and 16. Each of the heating device and the cooling devices 8, 9, 10 and 11, Predetermined bending points (bending points) 17, 18, 19 are provided between the pair of press elements. The predetermined bending points 17, 18, and 19 allow local bending or upward bending of the support body 14, and are formed by slits 21, 22, and 23. The slit extends in a direction perpendicular to the support surface 20 of the support, and the support 14 is elastically placed on the supports 24, 25, and 26 below the slit. The slits 21, 22 and 23 are partially cut transversely with respect to the longitudinal axis through the support 14. The length of this slit in the direction of the support surface determines the degree of bending. The important point here is that the predetermined bending points 17, 18, 19 are as transverse as possible to the longitudinal axis so that they can follow when the pressure bands 2, 3 expand or contract. It is in the middle between the respective heating and cooling devices 8, 9, 10, 11 arranged. As a result, the expansion and contraction of the pressure bands 2 and 3 is relieved.
[0023]
According to the above configuration, the pressure bands 2 and 3 and the laminated structure 1 can be contracted or expanded. This is caused by a temperature change, and also occurs between the two heating and cooling devices 8, 9, 10, 11 and the local upward bending and deflection of the support 14 in the allocated area. Bring. This increases or decreases the distance between the paired heating and cooling devices 8, 9, 10, and 11. This load produces a restoring force and arises from the supports 24, 25, 26 having the residual stiffness and elasticity of the support 14 left by the slits 21, 22, 23. Temporary upward bends or deflections are caused by the pressure bands 2 and 3, but the design compensation for this is done separately. For example, various preset bending points can be subjected to different loads.
[0024]
FIG. 3 shows a second embodiment. This shows the Example of the apparatus for laminating the laminated structure 1 for every division. This is for manufacturing a plastic card composed of at least two plastic strips having a panel (for example, a rectangular plate-like body) formed continuously along the direction of the transfer path. This is different from the first embodiment in the following points. That is, due to the axial displacement of the individual press elements with respect to each other, against the restoring force, the successive press elements of the heating devices 8, 9 and the cooling devices 10, 11 have rollers 40, 41 with respect to each other. Is provided so as to be movable on the support 14. In this case, the pressing element is different in that the axial displacement between the two stoppers 42 and 43 is limited in the direction of the transfer path and is supported on the stopper by springs 44 and 45, respectively.
[0025]
With the above configuration, the compression bands 2 and 3 reaching the heating devices 8 and 9 and the cooling devices 10 and 11 can be contracted or expanded. These are caused by changes in temperature and occur in the region between the heating device and the cooling device 8, 9, 10, 11 resulting in a local axial displacement of the pressing element of the heating device or the cooling device. The adjustable spring force sets the equilibrium again. In this state, each press element is in the basic position.
【The invention's effect】
[0026]
According to the present invention, it is possible to produce a plastic card with high productivity and high laminate quality.
[0027]
According to the present invention, the stress acting on the pressure band and the plastic strip can be greatly reduced. Undesirable longitudinal loading of the pressure band and plastic strip is avoided, and operation at high temperatures in short cycle times can be carried out without hindrance.
[0028]
According to the present invention, the pressure band functions as a heat transfer means during the heat-pressure treatment, and the service life of the pressure band can be significantly increased since undesirable overheating of the pressure band is avoided. .
[Brief description of the drawings]
FIG. 1 is a schematic side view of a laminating apparatus according to a first embodiment of the present invention.
FIG. 2 is a schematic side view showing an upper pressure bar raised in the laminating apparatus of FIG. 1;
FIG. 3 is a schematic side view of a laminating apparatus according to a second embodiment of the present invention, a partial schematic side view of a laminating apparatus as a substation of a complete facility for plastic card manufacturing. .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Laminated structure 2,3 Pressure band 4,5 Inlet side drum 6,7 Outlet side drum 8,9 Heating device 10,11 Cooling device 12,13 Pressure bar 14 Common support body 15,16 Support body 17,18 , 19 Bending point 20 Support surface 21, 22, 23 Slit 24, 25, 26 Elastic support 30 Controller 31, 32 Lifting device 40, 41 Roller 42, 43 Stopper 44, 45 Spring

Claims (15)

A laminated structure (1) consisting of at least two plastic strips with continuously formed panels ; provided on a common support (14) and individually corresponding to an integer number of panels Heating devices (8, 9) and cooling devices (10, 11) formed by controllable pressing elements and arranged in series; pressure bands (2 ) that can be driven intermittently in the transfer direction and face each other , 3) apart from the place, between these pressure band provided with a drive unit is movable through said heating and cooling devices for each of the plastic strip segment are continuously formed In an apparatus for laminating a laminated structure (1) consisting of at least two plastic strips with open panels by section;
In order to manufacture a plastic card along the transfer path, the pressing element is arranged to move in the direction of the transfer path against a restoring force acting in the direction of these initial positions An apparatus for laminating a laminated structure of at least two plastic strips having continuously formed panels for each section.   Each press element has a predetermined bending point (17, 18, 19) between successive pairs of press elements, and is provided with a continuous press element on a straight and long support (14) supported at both ends. 2. An apparatus for laminating a laminated structure comprising at least two plastic strips according to claim 1 for each section.   In order to cause bending or upward bending, predetermined bending points (17, 18, 19) are formed by slits (21, 22, 23) extending in a direction perpendicular to the support surface (20) of the support. The laminate (14) according to claim 2, wherein the support (14) is elastically supported at the lower part of the slit for laminating the laminated structure of at least two plastic strips for each section. apparatus.   Laminated structure comprising at least two plastic strips according to claim 3, characterized in that the slits (21, 22, 23) pass through the support (14) transversely to the transfer path. A device for laminating the body into sections.   2. Consisting of at least two plastic strips according to claim 1, characterized in that successive pressing elements are provided so that they can be moved on the support (14) by means of rollers (40, 41), respectively. A device for laminating a laminated structure into sections.   A pressing element is provided in the direction of the transfer path between the two springs (44, 45) supported on the stopper (42, 43), limiting the displacement on the support (14). An apparatus for laminating a laminated structure of at least two plastic strips according to claim 5 according to claim 5, characterized in that the laminated structure is laminated for each section.   For precise guidance of the position of the plastic strip in the laminate construction through the pressing element, one of the pressure bands (2, 3) has a locating pin, which is an aligned opening of the plastic strip and the other pressure band An apparatus for laminating a laminated structure made of at least two plastic strips according to any one of claims 1 to 6 for each section.   A laminated structure comprising at least two plastic strips according to any one of claims 1 to 7, characterized in that the temperature, pressure and processing time of the heatable pressing element can be adjusted by a control unit. Equipment for laminating.   9. Laminate structure comprising at least two plastic strips according to claim 8, characterized in that the processing time of the coolable pressing element is adjustable by the control unit depending on the processing time of the heatable pressing element. A device for laminating the materials into sections Provided plastic pressure bar (13) provided fixedly below the transport path of the strip and the plastic strip transport path upwardly provided with movable pressure bar (12) is above the lower A raising device (31, 32) for raising the pressure band (2, 3) with respect to the pressure bar (13) is provided, and the raising device opens the upper pressure bar (12). 10. A device for laminating a laminated structure of at least two plastic strips according to any one of claims 1 to 9, characterized in that it can be activated and operated by a control device (30) for detection. .   11. The lifting device (31, 32) is formed by a movable lift provided on the inlet and outlet sides of the heating device and cooling device (8, 9, 10, 11). An apparatus for laminating a laminated structure composed of at least two plastic strips described in 1) for each section. A pressure band (2, 3) is placed on the inlet drum (4, 5) and outlet drum (6, 7), respectively, and the inlet drum (4, 5) and outlet drum (6). , 7) are arranged on the outside of the press element, and a drum (4, 5, 6, 7) has a peripheral portion having a spike, the spike was designated edge end region 12. A device for laminating a laminated structure of at least two plastic strips according to any one of claims 1 to 11 in a driving manner with a transfer perforation provided. . At least one of the pair of inlet side drums (4, 5) and outlet side drums (6, 7) has a peripheral portion with spikes arranged so as not to collide with each other in the transfer direction. 13. An apparatus for laminating a laminated structure of at least two plastic strips according to claim 12 into sections. Laminated structure (1) consisting of at least two plastic strips with continuously formed panels; provided on a common support (14), corresponding to the total number of panels and individually temperature controllable A heating device (8, 9) and a cooling device (10, 11) formed by a continuous pressing element and arranged continuously; a lower fixed pressure bar (fixed below the plastic strip transfer path) 13) and an upper movable pressure bar (12) provided so as to be movable above the transport path of the plastic strip; a pressure band (movable intermittently in the transport direction) and arranged facing each other 2 and 3), and between the pressure bands (2, 3), the plastic strip partially passes through the heating device (8, 9) and the cooling device (10, 11). It is movable, in the apparatus for laminating on the classification of the layered structure (1) comprising at least two plastic strips having a continuously formed panel;
An elevating device (31, 32) for elevating the pressure band (2, 3) with respect to a lower fixed pressure bar (13) fixedly provided below the transfer path of the plastic strip is provided. From at least two plastic strips with continuously formed panels, characterized in that the lifting device is actuated by a control device (30) that detects the opening of the upper movable pressure bar (12) described above The apparatus for laminating the laminated structure (1) to be divided into sections. Alternately transferring at least two plastic strips, actuating the pressing element, and the plastic strip with panels comprises at least one heating device (8, 9) and one cooling device (10, 11). 15. A method for producing a plastic card with an apparatus according to any of claims 1 to 14, wherein

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