Double-belt press
By using guide elements with cylindrical side surfaces in a dual-belt press, the problems of wear, thermal damage, speed limits and complex settings in the prior art are solved, and higher stability, speed and environmental protection are achieved.
Patent Information
- Application Number
- CN202280098036.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-26
- Publication Date
- 2025-02-28
AI Technical Summary
The existing dual-belt presses have problems of wear, heat damage, speed limitation and complex arrangement when feeding the circumferential roller bed to the extrusion area, and are sensitive to environmental impact.
The guide element with a cylindrical side surface is adopted to reduce contact surfaces between the roller rod and the guide element, reduce wear and heat damage, and simplify configuration and reduce part number and complexity.
By reducing contact surfaces and heat input, reducing wear and heat damage, improving equipment stability and speed, simplifying setup and reducing environmental impact.
Smart Images
Figure CN119546437A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a double belt press, in particular for producing wood-based boards. Background Art
[0002] Double-belt presses are frequently used in the production of boards, in particular wood-based boards such as particleboard, MDF (medium density fiberboard), OSB (oriented strand board) and / or LVL (laminated veneer lumber).
[0003] In general, a double belt press comprises two circumferential metal forming belts. The two forming belts define an extrusion gap. This extrusion gap can often be adjusted, for example opened and closed mechanically. The starting portion of the material to be processed is clamped, and then the forming belts begin to run in the same direction at the desired speed, so that a "continuous material" or a single piece of material is pulled through the extrusion gap. At the same time, pressure and often heat are applied to the material from both sides.
[0004] Furthermore, double belt presses usually include two circumferential roller beds, each of which includes a plurality of parallel roller bars. In particular, the circumferential roller beds each include a plurality of roller bars, which are arranged parallel to each other and are attached to chains on the left and right sides. The two chains are driven by gears. The gears are attached transversely to the feed shaft and the feed shaft, respectively. In this way, the roller bars together with the chains also form a rotating belt. The plurality of roller bars or the belts formed thereby rest against the corresponding metal forming belt. In particular, in known presses, each circumferential metal forming belt is supported on support plates, also referred to as rolling plates, by the roller bars of the corresponding circumferential roller bed in the extrusion area. Pressure is applied to these rolling plates by means of suitable elements, which pressure is transmitted to the extruded material through the roller bars and the circumferential metal forming belt. For this purpose, press cylinder devices are mainly used. These press cylinders are usually attached to the frame of the press on one side and to the rolling plates on the other side. On the opposite rolling plates, counter devices are respectively arranged in the same area. The counter device can be realized, for example, by the frame of the press. This allows the pressure to be established or maintained between the rolling plate on the press top and the rolling plate on the press bottom by means of the press cylinder and the counter device.
[0005] In particular, feeding and guiding a circumferential roller bed having a plurality of parallel roller rods into and / or into the extrusion zone is complex and often accompanied by problems. This will be outlined in more detail below, taking the prior art design shown in FIGS. 6 and 7 as an example. FIG. 6 shows the lower part of a press feed section of a prior art double-belt press. The lower part of the press feed section shown comprises a feed shaft 1000, which comprises a guide element 1100, which is further shown in detail in FIG. 7. The guide element 1100 is used to guide and feed the circumferential roller bed 4000 into the extrusion zone. As shown in FIG. 7, the guide element 1100 comprises a toothed surface, wherein it is understood that in FIG. 6, the toothed surface is not shown because this is a schematic diagram. The spaces between the single teeth are configured for receiving roller rods. In order to ensure that the roller rods can be accurately inserted into these spaces, the deflection shaft 2000 is arranged directly in front of the feed shaft 1000. Before the deflection shaft 2000, a further shaft 3000 is arranged for receiving a circumferential roller bed 4000 arriving from the discharge opening of the double belt press. As explained in further detail below, this configuration has several disadvantages.
[0006] First, the numerous and / or large contact surfaces between the rollers and other machine components may promote wear and / or may result in high heat input to the shaft, which may promote thermal damage and / or limit maximum speed.
[0007] Secondly, the configuration is prone to failure, since even small inaccuracies in the setup can lead to, for example, a sharp increase in wear or direct damage to the roller bars and / or teeth if the roller bars and / or teeth are not precisely engaged. It is therefore also understood that the described configuration requires a complex setup, which must be performed by experienced workers. Furthermore, as shown in FIG6 , the circumferential roller bed 4000 generally requires a comprehensive guide structure 5000.
[0008] Thirdly, the system is very sensitive to environmental influences. For example, temperature fluctuations and the associated changes in the circumferential roller bed length can lead to increased wear.
[0009] It is therefore an object of the present disclosure to provide a double-belt press which at least partially overcomes the above-mentioned disadvantages. Summary of the invention
[0010] This object is at least partly achieved by a double belt press as defined in the independent claim. Further aspects of the disclosure are defined in the dependent claims.
[0011] In particular, the object is achieved by a double-belt press for producing wood-based panels such as particleboard, MDF (medium density fiberboard), OSB (oriented strand board) and / or LVL (laminated veneer lumber).
[0012] The double belt press comprises two circumferential metal forming belts which are configured to press the wood-based component between each other. These metal forming belts can each be driven rotationally by a respective shaft. Optionally, the metal forming belts are based on a steel material.
[0013] Furthermore, the double belt press comprises two circumferential roller beds, each of which comprises a plurality of parallel roller bars. The two circumferential roller beds may each comprise a plurality of roller bars, which are arranged parallel to each other and are attached to chains on the left and right sides. The two chains may be driven by gears which are respectively attached transversely to the feed shaft and / or the feed-out shaft.
[0014] Each forming belt is provided with one of two circumferential roller beds, wherein each of the circumferential roller beds is adapted to transfer pressure to the respective forming belt. In particular, each circumferential roller bed may abut against a respective metal forming belt. More specifically, each circumferential metal forming belt may be supported in the extrusion zone by a respective circumferential roller bed. Furthermore, each of the circumferential roller beds may be adapted to transfer heat to the respective forming belt.
[0015] The double-belt press further comprises at least one feed shaft comprising a guide element having a cylindrical side surface, which guides a plurality of parallel roller rods of one of the circumferential roller beds. The at least one feed shaft can be described as a shaft that feeds the circumferential roller bed into the pressing area of the double-belt press. Alternatively, the at least one feed shaft can be described as the last shaft that contacts the circumferential roller bed before conveying the circumferential roller bed to the pressing area of the double-belt press. It is understood that a plurality of parallel roller rods can abut against the cylindrical side surface of the guide element. Thus, the parallel roller rods can be supported and guided by the cylindrical side surface of the guide element. In terms of geometric description, the cylindrical side surface can also be described as a hollow cylinder without wall thickness.
[0016] The double belt press for manufacturing wood-based panels according to the present disclosure has several advantages over the prior art.
[0017] Firstly, by means of a guide element with such a cylindrical side surface, the size of the contact surface between the roller bar and the guide element is reduced. For example, when compared with guide elements with teeth and / or other receptacles which partially surround the roller bar, wear can be reduced due to the reduced size of the contact surface. Furthermore, the heat input into the guide element and thereby into the feed shaft can be reduced, so that thermal damage and / or maximum speed limitations of the double-belt press can be avoided.
[0018] Secondly, the configuration according to the present disclosure does not require the roller bar to engage with the teeth and / or other receptors of the guide element and is therefore less prone to failure, since small errors in the setting do not lead to a sharp increase in wear or direct damage, as would be the case, for example, if the roller bar engaged with teeth. It will also be appreciated, therefore, that the configuration described requires a less complex configuration.
[0019] Thirdly, the system is less sensitive to environmental influences. For example, as mentioned in the previous paragraph, temperature fluctuations and the associated changes in the circumferential roller bed length do not lead to a sharp increase in wear.
[0020] Fourthly, by means of the guide element with the cylindrical side surface, the number of parts and / or the complexity of the double belt press can be reduced. For example, a deflection shaft arranged directly in front of the feed shaft can be omitted to ensure that the roller rod is accurately inserted into the space between the teeth of the guide element.
[0021] With respect to the advantages described above, it will be appreciated that these advantages may also be applied to and enhanced by the aspects described below.
[0022] The guide element may be disc-shaped. According to the present disclosure, this may mean that the guide element is a geometric body in the form of a cylinder, wherein the radius of the cylinder is several times the thickness of the cylinder. Optionally, the radius of the cylinder is at least five times the thickness of the cylinder. Disc-shaped guide elements have proven to be beneficial because, for example, they allow localized targeted support of the circumferential roller bed and / or an increased deflection radius, while saving weight compared to a solid shaft.
[0023] The cross-section of the cylindrical side surface may be circular. Thus, it is understood that the cross-section may be taken in a plane perpendicular to the axis of rotation of the feed shaft. Furthermore, from the aspect that the cross-section of the cylindrical side surface may be circular, it is understood that the cylindrical side surface may be provided without teeth and / or any other elements protruding outwardly from the cylindrical side surface.
[0024] Furthermore, the cylindrical side surface may be a smooth surface. Furthermore, from the perspective that the cylindrical side surface may be a smooth surface, it can be concluded that there may be no teeth on the cylindrical side surface and / or any other elements protruding from the cylindrical side surface.
[0025] It will be appreciated that a cylindrical side surface having a circular cross-section and / or a smooth cylindrical side surface has advantages as described in detail above, namely, for example, reduced wear, a configuration that is less prone to failure, a configuration that requires less complex setup, and is less sensitive to environmental influences.
[0026] The cylindrical side surface may include chamfered and / or rounded edges. This may prevent the roller bar from hitting sharp edges. This may further avoid damage and / or wear of the guide element and / or the roller bar.
[0027] The diameter of the cylindrical side surface may be in the range of 100 mm to 900 mm, optionally in the range of 200 mm to 800 mm, further optionally in the range of 300 mm to 700 mm, even further optionally in the range of 400 mm to 600 mm. These diameters have proven to be advantageous because they provide the circumferential roller bed with a sufficiently large deflection radius to keep wear relatively low and / or ensure smooth operation without unnecessarily increasing the required installation space.
[0028] The guide element may be segmented, optionally into two to four segments. For example, the guide element may be a two-piece disc, which may be divided into two semicircular segments. Segmented guide elements have been shown to allow improved replacement and / or assembly.
[0029] The at least one feed shaft may include a plurality of guide elements. The number of guide elements may be in the range of 2 to 12, optionally in the range of 3 to 10, further optionally in the range of 4 to 8, even further optionally in the range of 5 to 7. These numbers of guide elements have been shown to provide adequate support for most lengths of roller bars used in double-belt presses while avoiding redundant parts.
[0030] The double belt press may further comprise a transmission shaft arranged to transmit the circumferential roller bed to the guide element, wherein the transmission shaft and the at least one feed shaft have the same direction of rotation. Optionally, the transmission shaft is arranged to transmit the circumferential roller bed directly to the guide element. It is therefore understood that between the transmission shaft and the at least one feed shaft, no other shaft rotating in the opposite direction to the transmission shaft and the at least one feed shaft can engage with the circumferential roller bed. By means of the transmission shaft and the at least one feed shaft rotating in the same direction, it is understood that a deflection shaft rotating in another direction and arranged directly in front of the feed shaft is omitted, for example, to ensure that the roller bar is precisely inserted into the space between the teeth of the guide element known in the prior art. It is understood that this configuration is achieved in particular by the cylindrical side surface of the guide element. Therefore, the number of components and / or the complexity of the double belt press can be reduced. In addition, the reduced deflection of the circumferential roller bed may result in reduced wear.
[0031] The double belt press may further comprise a support plate, which is arranged behind the guide element in the direction of movement of the circumferential roller bed. The support plate may have a support surface for receiving the roller bed from the guide element, wherein the support surface and the cylindrical side surface may be substantially flush in the region where the roller bed is received from the guide element. It can be understood from the feature that the support surface and the cylindrical side surface are substantially flush in the region where the roller bed is received from the guide element that the line on the cylindrical side surface can fall with the support surface. With this configuration, the roller bar can leave from the cylindrical side surface and be smoothly and / or evenly transferred to the support surface. Thus, for example, the double belt press can be operated at a higher speed compared to a toothed guide element. Furthermore, exemplarily, the support surface and the cylindrical side surface may be substantially tangential, since this allows the roller bar to be particularly smoothly and / or evenly left and transferred. Thus, for example, the double belt press can be operated at a higher speed compared to a toothed guide element. It should be understood that the support plate may be a heating plate. Furthermore, the support plate may extend into the pressing region of the double belt press.
[0032] The support plate can extend against the feed direction, at least to a vertical axis which intersects the rotation axis of the at least one feed shaft. Against the feed direction can also be described as "away from the pressing area". With this configuration, the roller bar can be smoothly and / or evenly removed from the cylindrical side surface. Thus, for example, the double belt press can be operated at higher speeds compared to a toothed guide element.
[0033] The support plate can extend in the direction opposite to the feeding direction beyond a vertical axis intersecting the rotation axis of the at least one feeding shaft, the excess length being in the range of 0.2 to 5 times, optionally 0.4 to 4 times, further optionally 0.6 to 3 times, even further optionally 0.8 to 2 times the diameter of the roller bar. The roller bar can be a roller bar of a corresponding circumferential roller bed. With this configuration, the roller bar can be more smoothly and / or evenly removed from the cylindrical side surface. Thus, the double belt press can be operated at a higher speed.
[0034] Furthermore, at least one of the plurality of parallel roller bars may comprise a roller bar having a length in the range of 1100 mm to 3600 mm, optionally 1200 mm to 3500 mm, further optionally 1300 mm to 3400 mm, even further optionally 1400 mm to 3300 mm. These lengths have proven to be advantageous, since they allow the roller bar to be guided by the cylindrical side surface in a particularly stable manner.
[0035] The circumferential roller bed may partially wrap around the guide element, wherein the wrap angle of the circumferential roller bed with the guide element is in the range of 70° to 180°, optionally in the range of 90° to 160°, further optionally in the range of 110° to 140°, and even optionally in the range of 120° to 130°. It will be appreciated that a wrap angle of 90° will result in a 90° deflection of the circumferential roller bed. Furthermore, it will be appreciated that a wrap angle of 180° will result in a 180° deflection of the circumferential roller bed. The above wrap angle ranges have proven to be advantageous because they provide good guidance for the circumferential roller bed without unnecessarily increasing the deflection of the circumferential roller bed and / or the contact surface between the circumferential roller bed and the guide element. Thus, adequate guidance can be obtained while maintaining moderate wear.
[0036] The guide element can be made essentially of metal, wherein optionally the guide element is made essentially of steel. In particular, steel has proven to be advantageous because a low-wear interaction with the guide element can be achieved.
[0037] The cylindrical side surface can optionally be surface treated by case hardening. Studies have shown that case hardening not only reduces wear but also adjusts the running properties of the roller bar on the cylindrical side surface.
[0038] The double belt press may comprise a second feed shaft comprising a second guide element having a cylindrical side surface, the second guide element guiding a plurality of parallel roller bars of a second circumferential roller bed of the two circumferential roller beds. It is understood that the second feed shaft, the second guide element and / or the second circumferential roller bed may be configured as at least one feed shaft, guide element and / or circumferential roller bed as described above. Therefore, the above advantages apply accordingly.
[0039] The double belt press may comprise a second conveying shaft conveying the second circumferential roller bed to the second guide element, wherein the second conveying shaft and the second feed shaft have the same direction of rotation. It is understood that the second conveying shaft may be configured as a conveying shaft as described above. Therefore, the above advantages apply accordingly.
[0040] Furthermore, it will be appreciated that the double belt press may include a second support plate configured as a support plate as described above. Figure 1 This aspect will be particularly understood from the description of BRIEF DESCRIPTION OF THE DRAWINGS
[0041] The attached drawings are briefly described below:
[0042] Figure 1 A double belt press according to the invention is shown;
[0043] Figure 2 The lower part of the press feed section of a double-belt press according to the invention is shown;
[0044] Figure 3 shows a cross section through a feed shaft of a double belt press according to the invention, wherein the cross section is taken in a plane perpendicular to the axis of rotation of the feed shaft;
[0045] Figure 4 shows another cross section through a feed shaft of a double belt press according to the invention, wherein the cross section is taken in a plane parallel to the axis of rotation of the feed shaft;
[0046] Figure 5 shows the lower part of the press feed section of another double-belt press according to the invention, and
[0047] FIG6 shows the lower part of the press feed section of a prior art double belt press, and
[0048] FIG. 7 shows a prior art guide element of said prior art double belt press. DETAILED DESCRIPTION
[0049] Figure 1 A double belt press 10 for producing wood-based boards is shown in a schematic diagram. Since the double belt press cannot be shown in its entirety with the same level of detail, the reference symbols 100a, 100b are placeholders for other components of the double belt press 10.
[0050] Figure 1 The double belt press 10 comprises two circumferential metal forming belts 12, 13, which are configured to press the wood-based component between each other. A pressing area 11 is provided between the circumferential metal forming belts 12, 13, which pressing area can also be referred to as pressing gap 11. The metal forming belts 12, 13 are both arranged on shafts, wherein these shafts are provided with reference numerals 200a, 200b.
[0051] The double-belt press 10 further comprises two circumferential roller beds 14 , 15 , each of which comprises a plurality of parallel roller bars 16 , 17 .
[0052] like Figure 1 It can be further seen in the drawing that each forming belt 12, 13 is provided with one of two circumferential roller beds 14, 15, wherein the circumferential roller beds 14, 15 are each adapted to transmit a pressure force to the respective forming belt 12 and 13. In particular, the circumferential roller beds 14, 15 rest on the respective metal forming belt 12, 13. Furthermore, each circumferential metal forming belt 12, 13 is supported in the pressing area 11 by the respective circumferential roller bed 14, 15.
[0053] Furthermore, the double belt press 10 shown comprises a first feed shaft 20, which comprises a first guide element 21 with a cylindrical side surface 22, which guides a plurality of parallel roller bars 16 of a first circumferential roller bed 14 of the two circumferential roller beds 14, 15. The aspect of the first guide element 21 with a cylindrical side surface 22 is Figure 2 and Figure 3 Specifically shown in.
[0054] Furthermore, the double belt press 10 comprises a first transfer shaft 30 which is arranged to transfer the first circumferential roller bed 14 to the first guide element 21, wherein the first transfer shaft 30 and the first feed shaft 20 have the same direction of rotation. Figure 5 It can be concluded.
[0055] In addition to the first feed shaft 20 , the double-belt press 10 comprises a second feed shaft 40 which comprises a second guide element 41 with a cylindrical side surface 42 which guides a plurality of parallel roller bars 17 of a second of the two circumferential roller beds 15 .
[0056] also, Figure 1 The double-belt press 10 comprises a second transfer shaft 50 which transfers the second circumferential roller bed 15 to the second guide element 41 , wherein the second transfer shaft 50 and the second feed shaft 40 have the same direction of rotation.
[0057] Figure 2 The lower part of the press feed section of the double-belt press 10 is shown, wherein it can be seen that the double-belt press 10 further comprises a first support plate 60, which is arranged behind the first guide element 21 in the direction of movement of the first circumferential roller bed 14. The first support plate 60 has a support surface 61 for receiving the first circumferential roller bed 14 from the first guide element 21, wherein the support surface 61 and the cylindrical side surface 22 are substantially flush in the region of receiving the first circumferential roller bed 14 from the first guide element 21. Figure 1 It is understood that the double belt press 10 further comprises a second support plate 70 which is arranged behind the second guide element 41 in the movement direction of the second circumferential roller bed 15. The second support plate 70 is configured and arranged like the first support plate 60.
[0058] also, Figure 2Detailedly shown in FIG. 1 is that the first support plate 60 extends against the feeding direction, at least to a vertical axis 80 intersecting the rotation axis 25 of the first feeding shaft 20. In particular, the first support plate 60 extends against the feeding direction beyond the vertical axis 80 intersecting the rotation axis 25 of the first feeding shaft 20, and the exceeding length is in the range of 0.5 to 0.7 times the roller rod diameter of the plurality of parallel roller rods 16 of the first circumferential roller bed 14 of the two circumferential roller beds 14, 15.
[0059] like Figure 2 As shown, the first circumferential roller bed 14 is partially wrapped around the first guide element 21 , wherein a wrap angle 90 of the first circumferential roller bed 14 to the first guide element is in the range of 135° to 170°.
[0060] like Figure 3 As shown, the cross-section of the cylindrical side surface 22 is circular. Therefore, the cylindrical side surface 22 includes a chamfered edge 26.
[0061] In addition, from Figure 3 It will be appreciated that the cylindrical side surface 22 is a smooth surface, i.e., has no teeth or any other protruding elements. Figure 3 and Figure 4 It can be understood that the first guide element 21, that is, the first guide elements 21a, 21b, 21c, 21d are disc-shaped.
[0062] like Figure 4 As shown, the first feed shaft 20 includes four installed guide elements 21a, 21b, 21c, 21d. Figure 4 In the embodiment, gears 28a, 28b are arranged on the feed shaft 20. These gears 28a, 28b can be engaged with the chain of the circumferential roller bed 14.
[0063] Reference Symbols List
[0064] 10 Double belt press
[0065] 11 Extrusion gap / extrusion area
[0066] 12, 13 Metal forming belt
[0067] 14, 15 Circumferential roller bed
[0068] 16, 17 multiple parallel rollers
[0069] 20 First feed axis
[0070] 21 first guide element
[0071] 22 cylindrical side surface of the first guide element
[0072] 25 Rotation axis of the first feed shaft
[0073] 26 Chamfer
[0074] 28a, 28b gears
[0075] 30First transmission axis
[0076] 40 Second feed axis
[0077] 41 Second guide element
[0078] 42 cylindrical side surface of the second guide element
[0079] 50 Second transmission axis
[0080] 60 first support plate
[0081] 61 Support surface
[0082] 70 second support plate
[0083] 80 vertical axis
[0084] 90 wrap angle
[0085] 100a, 100b Placeholder for another double belt press
[0086] 200a, 200b Axis of metal forming belt
[0087] 1000 Prior Art Feed Shaft
[0088] 1100 Prior Art Guiding Components
[0089] 2000 Prior Art Deflection Axis
[0090] 3000 Existing Technology Axles
[0091] 4000 Existing Technology Circumferential Roller Bed
[0092] 5000 Existing Technology Guide Structure
Claims
1. A double belt press (10) for producing a wood-based board, the double belt press (10) comprising: two circumferential metal forming belts (12, 13) configured to press the wood-based component between each other; Two circumferential roller beds (14, 15), each roller bed comprising a plurality of parallel roller bars (16, 17); wherein each forming belt (12, 13) is provided with one of two circumferential roller beds (14, 15), wherein each of the circumferential roller beds (14, 15) is suitable for transmitting a pressure to the respective forming belt (12, 13), and Characterized in that the double-belt press (10) further comprises At least one feed shaft (20) comprises a guide element (21) with a cylindrical side surface (22), said guide element (21) guiding the plurality of parallel roller bars (16) of one of the circumferential roller beds (14).
2. Double-belt press (10) according to the preceding claim, wherein: The guide element (21) is disc-shaped.
3. Double-belt press (10) according to any one of the preceding claims, wherein: The cross section of the cylindrical side surface (22) is circular.
4. Double-belt press (10) according to any one of the preceding claims, wherein: The cylindrical side surface (22) is a smooth surface.
5. Double-belt press (10) according to any one of the preceding claims, wherein: The cylindrical side surface (22) comprises chamfered and / or rounded edges (26).
6. Double-belt press (10) according to any one of the preceding claims, wherein: The diameter of the cylindrical side surface (22) is in the range of 100 mm to 900 mm, optionally in the range of 200 mm to 800 mm, further optionally in the range of 300 mm to 700 mm, and even optionally in the range of 400 mm to 600 mm.
7. Double-belt press (10) according to any one of the preceding claims, wherein: The guide element (21) is segmented, optionally into two to four segments.
8. Double-belt press (10) according to any one of the preceding claims, wherein: The at least one feed shaft (20) comprises a plurality of guide elements (21a, 21b, 21c, 21d), wherein the number of the guide elements is in the range of 2 to 12, optionally in the range of 3 to 10, further optionally in the range of 4 to 8, and even optionally in the range of 5 to 7.
9. Double-belt press (10) according to any one of the preceding claims, wherein: The double belt press comprises: A transfer shaft (30) is arranged to transfer the circumferential roller bed (14) to the guide element (21), wherein the transfer shaft (30) and the at least one feed shaft (20) have the same direction of rotation.
10. Double-belt press (10) according to any one of the preceding claims, wherein: The double belt press also includes: A support plate (60) is arranged behind the guide element (21) along the movement direction of the circumferential roller bed (14), wherein the support plate (60) has a support surface (61) for receiving the roller bed (14) from the guide element (21), wherein the support surface (61) and the cylindrical side surface (22) are substantially flush in the area where the roller bed (14) is received from the guide element (21).
11. Double-belt press (10) according to the preceding claim, wherein: The support plate (60) extends in the opposite direction to the feeding direction, at least to a vertical axis (80) intersecting the rotation axis (25) of the at least one feeding shaft (20).
12. Double belt press (10) according to any one of claims 10 or 11, wherein: The support plate (60) extends in the opposite direction of the feeding direction beyond a vertical axis (80) intersecting the rotation axis of the at least one feeding shaft (20), and the excess length is in the range of 0.2 to 5 times, optionally 0.4 to 4 times, further optionally 0.6 to 3 times, and even further optionally 0.8 to 2 times the roller rod diameter.
13. Double-belt press (10) according to any one of the preceding claims, wherein: At least one of the plurality of parallel roller bars (16, 17) comprises a roller bar having a length in the range of 1100mm to 3600mm, optionally 1200mm to 3500mm, further optionally 1300mm to 3400mm, even further optionally 1400mm to 3300mm.
14. Double-belt press (10) according to any one of the preceding claims, wherein: The circumferential roller bed (14) partially wraps the guide element (21), wherein a wrap angle (90) between the circumferential roller bed (14) and the guide member (21) is in the range of 70° to 180°, optionally in the range of 90° to 160°, further optionally in the range of 110° to 140°, and even optionally in the range of 120° to 130°.
15. Double-belt press (10) according to any one of the preceding claims, wherein The guide element (21) is substantially made of metal, wherein optionally the guide element (21) is mainly made of steel.
16. Double-belt press (10) according to the preceding claim, wherein The cylindrical side surface (22) is surface treated by surface hardening.
17. Double-belt press (10) according to any one of the preceding claims, wherein The double belt press comprises: A second feed shaft (40) comprises a second guide element (41) having a cylindrical side surface (42), the second guide element (41) guiding the plurality of parallel roller bars (17) of the second circumferential roller bed (15) of the two circumferential roller beds (14, 15).
18. Double-belt press (10) according to the preceding claim, wherein The double belt press (10) comprises: A second conveying shaft (50) conveys the second circumferential roller bed (15) to the second guide element (41), wherein the second conveying shaft (50) and the second feed shaft (40) have the same direction of rotation.