A full-size flexible landing platform and thermoforming line

Abstract

The utility model provides a kind of full-size flexible receiving feeding platform and thermoforming production line, the full-size flexible receiving feeding platform provided includes platform frame and roller group, and its receiving end is equipped with telescopic platform, which is composed of fixed roller section and telescopic roller section;Wherein, the telescopic roller section includes telescopic support and the multiple transmission rollers rotationally connected on telescopic support, one end of the telescopic support is connected with the platform frame, and the other section is connected with the fixed roller section;The transmission roller, roller group and fixed roller section are transmission connection;When the fixed roller section is driven by first drive source, the transmission roller, roller group and fixed roller section synchronously rotate in the same direction, the second drive source arranged in the fixed roller section can drive the telescopic support to stretch and retract along the direction of material piece conveying to adjust the spacing between the transmission rollers, so that the fixed roller section can relatively move away / close to the roller group.

Description

Technical Field

[0001] This utility model belongs to the field of conveying equipment, and in particular relates to a full-size flexible material receiving and feeding platform and a thermoforming production line. Background Technology

[0002] Currently, heating furnace equipment has a furnace door, preventing the internal drive rollers from extending outside. When the door is open, materials are conveyed to it, where they are then received by an external roller feeding platform for further downstream transport. However, due to the furnace door's thickness, there is typically a 500mm gap between the end of the internal drive roller and the receiving end of the external roller feeding platform for opening and closing. When the material's length along the conveying direction is less than 800mm, upon reaching this gap, its center of gravity is outside the internal drive roller and not supported by the feeding platform. Furthermore, its front end does not reach the platform, causing it to collide with the receiving roller, resulting in jamming. Jamming necessitates line shutdown, significantly increasing production costs. Existing solutions all aim to reduce the thickness of the furnace door to minimize the gap. However, reducing the thickness of the furnace door will affect the heat preservation effect of the heating furnace. Therefore, the gap between the end of the internal drive roller and the receiving end of the external roller feeding platform cannot be eliminated. Thus, further exploration is needed to address the problem of material jamming during receiving. Utility Model Content

[0003] In view of the problems existing in the prior art, the main purpose of this utility model is to provide a full-size flexible feeding platform and a thermoforming production line. The provided full-size flexible feeding platform has a clever structure, is easy to maintain, and the telescopic feeding action does not interfere with the rotation of the transmission roller. When applied to a thermoforming production line, it can effectively make up for the defect of easy material jamming due to the large distance between the receiving end of the feeding platform and the discharge end of the upstream heating furnace.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model provides a full-size flexible material receiving and feeding platform, which includes a platform frame and a roller assembly. The telescopic platform at its receiving end consists of a fixed roller section and a telescopic roller section.

[0006] The telescopic roller section includes a telescopic bracket and multiple drive rollers rotatably connected to the telescopic bracket. One end of the telescopic bracket is connected to the platform frame, and the other end is connected to the fixed roller section. The drive rollers, roller group, and fixed roller section are connected in a driving manner.

[0007] When the fixed roller section is driven by the first drive source, the transmission roller, roller group and fixed roller section rotate synchronously in the same direction. The second drive source located on the fixed roller section can drive the telescopic bracket to extend and retract along the material conveying direction to adjust the distance between the transmission rollers, so that the fixed roller section can move away from / close to the roller group.

[0008] As a further description of the above technical solution, the telescopic bracket includes at least two rhomboid frames, each of which is formed by four hinged edges, and adjacent rhomboid frames are hinged to each other.

[0009] The transmission rollers are rotatably connected to the nodes of the rhomboid frame at equal intervals, and their axial direction is parallel to the roller axis of the fixed roller section and the roller group.

[0010] As a further description of the above technical solution, the platform frame has an extension section at one end facing the fixed roller section, and in the conveying direction perpendicular to the material, each rhomboid frame included in the telescopic bracket is correspondingly slidably connected to the extension section through a transition piece.

[0011] As a further description of the above technical solution, the two adjacent rollers included in the fixed roller section, as well as the rollers adjacent to the transmission roller in the fixed roller section, are all connected by a first chain sprocket assembly.

[0012] The transmission rollers and roller groups are connected by a second chain and sprocket assembly.

[0013] As a further description of the above technical solution, the first drive source is fixed to the adapter adjacent to the fixed roller section via a first connecting plate; the first drive source is used to drive the first chain sprocket assembly, thereby causing the rollers included in the fixed roller section to rotate around the axis.

[0014] As a further description of the above technical solution, it also includes a chain tensioning mechanism, which is used to tension the second chain in the second chain sprocket assembly. The chain tensioning mechanism includes at least two tensioning wheels arranged along the conveying direction of the material. The two tensioning wheels are fixed to the adapter adjacent to the fixed roller section by a second connecting plate.

[0015] The adapter is located between the first connecting plate and the second connecting plate in a direction perpendicular to the material conveying direction.

[0016] As a further description of the above technical solution, both the first connecting plate and the second connecting plate are slidably connected to the extension end of the platform frame.

[0017] As a further description of the above technical solution, a displacement sensor is also included, which is used to monitor the telescopic stroke of the telescopic bracket.

[0018] This utility model also provides a thermoforming production line, including a heating furnace and the full-size flexible feeding platform described above; wherein,

[0019] The heating furnace is equipped with a feeding furnace door, a discharging furnace door, and an internal transmission roller between the two furnace doors. The receiving end of the full-size flexible feeding platform is arranged opposite to the discharging furnace door to receive the material that is transported to the discharging furnace door by the internal transmission roller.

[0020] As a further description of the above technical solution, before the fixed roller section of the telescopic platform provided at the receiving end of the full-size flexible receiving and feeding platform is relatively far away from the roller group included in the full-size flexible receiving and feeding platform, the distance between the end of the fixed roller section facing the discharge furnace door and the internal transmission roller is not less than the thickness of the discharge furnace door.

[0021] After the fixed roller section of the telescopic platform at the receiving end of the full-size flexible material receiving and feeding platform is moved away from the roller group of the full-size flexible material receiving and feeding platform by a preset distance, the distance between the end of the fixed roller section facing the discharge furnace door and the internal transmission roller is not greater than half the length of the material along its conveying direction.

[0022] Based on the above technical solutions, the outstanding effects of this utility model are as follows:

[0023] The full-size flexible material receiving and feeding platform provided by this utility model still includes a platform frame and a roller assembly mounted on it. Unlike existing technologies, it features a telescopic platform at the receiving end, consisting of a fixed roller section and a telescopic roller section. The telescopic roller section includes a telescopic bracket and multiple drive rollers rotatably connected to the bracket. One end of the telescopic bracket is connected to the platform frame, and the other end is connected to the fixed roller section. The drive rollers, roller assembly, and fixed roller section are interconnected. When the fixed roller section is driven by a first drive source, the drive rollers and roller assembly rotate synchronously and in the same direction. A second drive source located on the fixed roller section drives the telescopic bracket to extend and retract accordingly along the material conveying direction to adjust the spacing between the drive rollers, allowing the fixed roller section to move relatively away from / closer to the roller assembly. Its ingenious structure, with each part connected by a hinged or transmission structure, facilitates maintenance. Furthermore, the extension and retraction of the telescopic bracket does not interfere with the rotation of the drive rollers and other rollers. Therefore, when this full-size flexible feeding platform is placed outside the discharge furnace door of the thermoforming production line heating furnace, after the discharge furnace door is opened, only the rotation of the rollers in the fixed roller section needs to be driven by the drive source to drive the transmission rollers and roller group to rotate synchronously in the same direction. At the same time, the telescopic bracket is driven by the second drive source to extend and increase the distance between the transmission rollers, so that the fixed roller section can move relatively away from the roller group and approach the end of the internal transmission roller inside the discharge furnace door for receiving material. After the material is received (that is, the material is transferred to the fixed roller section, and the material will not fall off the fixed roller section during the process of the fixed roller section rotating in the opposite direction and moving away from the internal transmission roller), the drive source drives the rollers in the fixed roller section to rotate in the opposite direction, so that the telescopic bracket is driven by the second drive source to retract and reset in the opposite direction. Thus, the material will continue to be conveyed forward with the reverse rotating transmission roller and roller. Therefore, during the receiving process, the problem of material jamming due to the large distance between the receiving end of the feeding platform and the discharge furnace door of the heating furnace will no longer occur, which can effectively ensure the continuity of production operations. Attached Figure Description

[0024] Figure 1 This is a top view of the full-size flexible material receiving and feeding platform in this embodiment of the present invention;

[0025] Figure 2 This is a front view of the full-size flexible material receiving and feeding platform in this embodiment of the present invention;

[0026] Figure 3 This is a partial front view (internal) of the full-size flexible material receiving and feeding platform in this embodiment of the novel invention.

[0027] Figure 4 This is a partial bottom view structural diagram of the full-size flexible material receiving and feeding platform in this embodiment of the present utility model;

[0028] Figure 5This is a diagram showing the first working state of a partial thermoforming production line in an embodiment of this utility model.

[0029] Figure 6 This is a diagram showing the second working state of a partial thermoforming production line in an embodiment of this utility model.

[0030] Explanation of icon numbers:

[0031] 1. Platform frame; 11. Extension section; 2. Telescopic platform; 21. Telescopic bracket; 22. Drive roller; 31. First drive source; 32. Second drive source; 4. Roller; 5. Adapter; 61. First chain and sprocket assembly; 621. Second chain; 7. Tensioner; 81. First connecting plate; 82. Second connecting plate; 9. Heating furnace; 91. Internal drive roller; l. Distance between the beginning of the fixed roller section and the end of the internal drive roller. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "upper," "middle," "lower," "inner," "outer," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0034] Please see Figures 1 to 6 This utility model discloses a full-size flexible material receiving and feeding platform. The provided full-size flexible material receiving and feeding platform includes a platform frame 1 and a roller assembly. The telescopic platform 2 at its receiving end is composed of a fixed roller section and a telescopic roller section; wherein,

[0035] The telescopic roller section includes a telescopic bracket 21 and multiple drive rollers 22 rotatably connected to the telescopic bracket 21. One end of the telescopic bracket 21 is connected to the platform frame 1, and the other end is connected to the fixed roller section. The drive rollers 22, the roller group, and the fixed roller section are connected in a driving manner.

[0036] When the fixed roller section is driven by the first drive source 31, the transmission roller 22, the roller group and the fixed roller section rotate synchronously in the same direction. The second drive source 32 located on the fixed roller section can drive the telescopic bracket 21 to extend and retract along the material conveying direction to adjust the distance between the transmission rollers 22, so that the fixed roller section can move away from / close to the roller group.

[0037] In the above configuration, the full-size flexible material receiving and feeding platform still includes a platform frame 1 and a roller assembly mounted on it. Unlike the prior art, a telescopic platform 2 is added to its receiving end. The telescopic platform 2 consists of a fixed roller section and a telescopic roller section. The telescopic roller section includes a telescopic bracket 21 and multiple drive rollers 22 rotatably connected to the telescopic bracket 21. One end of the telescopic bracket 21 is connected to the platform frame 1, and the other end is connected to the fixed roller section. The drive rollers 22, the roller assembly, and the fixed roller section are connected in a driving manner. When the fixed roller section is driven by the first drive source 31, the transmission roller 22 and the roller group will rotate synchronously and in the same direction with the fixed roller section. The second drive source 32 located on the fixed roller section can also synchronously drive the telescopic bracket 21 to extend and retract accordingly along the material conveying direction to adjust the distance between the transmission rollers 22, so that the fixed roller section can move away from / close to the roller group. Its structure is ingenious, and each part is connected by a hinged structure or a transmission structure, which is convenient for maintenance. At the same time, the extension and retraction of the telescopic bracket 21 does not interfere with the rotation of the transmission roller 22 and other rollers 4. Therefore, when this full-size flexible material receiving and feeding platform is arranged outside the discharge furnace door of the heating furnace 9, after the discharge furnace door is opened, only the first drive source 31 needs to drive the roller 4 of the fixed roller section to rotate, which can drive the transmission roller 22 and the roller group to rotate synchronously in the same direction. The second drive source 32 located on the fixed roller section can synchronously drive the telescopic bracket 21 to extend and increase the distance between the transmission rollers 22, so that the fixed roller section can move relatively away from the roller group and approach the end of the internal transmission roller 91 inside the discharge furnace door to receive material. After the material is received (i.e., the material is conveyed to the discharge furnace door), the material is received. On the fixed roller section, as the fixed roller section rotates in the opposite direction and moves away from the internal transmission roller 91, the material will not fall off the fixed roller section. The drive source 31 drives the roller 4 of the fixed roller section to rotate in the opposite direction, while the second drive source 32 drives the telescopic bracket 21 to retract and reset in the opposite direction. Thus, the material will continue to be conveyed forward with the reverse-rotating transmission roller 22 and roller 4. Therefore, during the receiving process, the problem of material jamming due to the large gap between the receiving end of the receiving platform and the discharge door of the heating furnace 9 will no longer occur, which can effectively ensure the continuity of production operations.

[0038] Please see Figures 1 to 6Specifically, in this embodiment, the material is conveyed from right to left. The telescopic roller section is located between the roller group and the fixed roller section in the left-right direction. The telescopic bracket 21 includes four diamond-shaped frames arranged sequentially in the left-right direction. Each diamond-shaped frame is hinged by four hinged edges, and adjacent diamond-shaped frames are hinged to each other. Preferably, adjacent diamond-shaped frames share two long hinged edges, that is, the two hinged edges of adjacent diamond-shaped frames that extend in the same direction and are located on the same extension line can be integrally formed, so that the telescopic bracket 21 extends or retracts more continuously and smoothly in the left-right direction. Of course, in other embodiments, the maximum length that the telescopic bracket 21 can extend can be set according to the thickness of the discharge furnace door of the heating furnace 9 to compensate for the material receiving gap, so that after the telescopic bracket 21 is fully extended, the gap between the right (first) end of the fixed roller section on its right side and the left (last) end of the internal transmission roller 91 in the heating furnace 9 will not cause the material to jam during the discharge process. Meanwhile, the drive rollers 22 are rotatably connected to the nodes of the rhomboid frame at equal intervals, and their axial direction is parallel to the axis of the fixed roller section and the roller 4 of the roller group. It should be understood that when the telescopic bracket 21 is extended to its maximum length, the spacing between the drive rollers 22 rotatably connected to it is not sufficient to cause the material to jam. Preferably, the maximum spacing between the drive rollers 22 is consistent with the spacing of the roller group and the roller 4 of the fixed roller 4.

[0039] Please see Figures 1 to 4 Specifically, in this embodiment, the right end of the platform frame 1 has an extension section 11. In the vertical direction, each rhomboid frame included in the telescopic bracket 21 is slidably connected to the extension section 11 through a connector 5, so that the weight of the telescopic platform 2 is supported on the extension section 11 of the platform frame 1 during the telescopic conveying of materials, ensuring that it has sufficient load-bearing capacity to convey the materials.

[0040] Specifically, in this embodiment, the two adjacent rollers 4 included in the fixed roller section, as well as the leftmost roller 4 of the fixed roller section and the rightmost drive roller 22 of the telescopic roller section, are all connected by a first chain sprocket assembly 61. All drive rollers 22 of the telescopic roller section and all rollers 4 of the roller group are connected by a second chain sprocket assembly, thereby realizing the mutual transmission connection between the drive roller 22, the roller group, and the fixed roller section of the telescopic roller section.

[0041] Specifically, in this embodiment, the first drive source 31 can be a motor, which is fixed to the rightmost adapter 5 via a first connecting plate 81. It drives the leftmost first chain sprocket assembly 61, causing all rollers 4 included in the fixed roller section to rotate around an axis, synchronously driving the transmission roller 22 of the telescopic roller section on the left, as well as the rollers 4 of the roller group, to rotate synchronously in the same direction. The second drive source 32 can also be a motor, installed below the rollers 4 of the fixed roller section. When the fixed roller section is driven by the first drive source 31 to rotate synchronously in the same direction as the transmission roller 22, roller group, and fixed roller section, it synchronously drives the telescopic bracket 21 to extend and retract along the material conveying direction to adjust the distance between the transmission rollers. This allows the fixed roller section to move relatively away from / closer to the roller group, ensuring that the extension and retraction of the telescopic bracket 21 does not interfere with the rotation of the transmission roller 22 and other rollers 4.

[0042] Please see Figure 2 and Figure 3 Specifically, in this embodiment, since the telescopic platform 2 can extend to the right or return to the left relative to the roller group on its left side, but the left end of the second chain 621 used in the second chain sprocket assembly is fixed in a fixed rotational position, a chain tensioning mechanism is provided to tension the second chain 621 in the second chain sprocket assembly. The chain tensioning mechanism includes at least two tensioning wheels 7 arranged along the conveying direction of the material. The two tensioning wheels 7 are fixed to the rightmost adapter 5 by a second connecting plate 82. In the front-back direction, the adapter 5 is located between the first connecting plate 81 and the second connecting plate 82, which is equivalent to the first connecting plate 81 being connected to the inner side of the adapter 5 and the second connecting plate 82 being connected to the outer side of the adapter 5.

[0043] Specifically, in this embodiment, the first connecting plate 81 and the second connecting plate 82 are slidably connected to the extension end of the platform frame 1. When the roller group and the roller 4 of the fixed roller section rotate synchronously and in the same direction with the transmission roller 22 of the telescopic roller section, the first connecting plate 81 and the second connecting plate 82 will be driven by the adapter 5 to slide relative to the extension end of the platform frame 1 in the same direction.

[0044] Specifically, in this embodiment, a displacement sensor (not shown in the figure) is also included. The displacement sensor is used to monitor the extension and retraction stroke of the telescopic bracket 21 in order to better control the extension and retraction of the telescopic bracket 21 to the right and the retraction and retraction to the left.

[0045] Please see Figures 1 to 6Specifically, this embodiment also provides a thermoforming production line, including a heating furnace 9 and a full-size flexible feeding platform as described above; wherein, the heating furnace 9 is provided with a feeding furnace door, a discharging furnace door and an internal transmission roller 91 disposed between the two furnace doors, and the receiving end of the full-size flexible feeding platform is disposed opposite to the discharging furnace door to receive the material parts conveyed by the internal transmission roller 91 to the discharging furnace door.

[0046] Furthermore, in this embodiment, before the fixed roller section of the telescopic platform 2 at the receiving end of the full-size flexible material receiving platform is relatively far away from the roller group included in the full-size flexible material receiving platform, the distance between the end of the fixed roller section facing the discharge furnace door and the internal transmission roller 91 is not less than the thickness of the discharge furnace door, so that the discharge furnace door can be smoothly opened or closed in the vertical direction; after the fixed roller section of the telescopic platform 2 at the receiving end of the full-size flexible material receiving platform is relatively far away from the roller group included in the full-size flexible material receiving platform to a preset distance, the distance between the end of the fixed roller section facing the discharge furnace door and the internal transmission roller 91 is not greater than half the length of the material along its conveying direction, so that the material will not get stuck between the end of the internal transmission roller 91 and the receiving end of the full-size flexible material receiving platform due to the continuous forward shift of the center of gravity during the conveying process.

[0047] Specifically, the process of completing one material feeding operation using the full-size flexible material feeding platform described in this embodiment is as follows:

[0048] Please refer to Figures 1 to 3 ,as well as Figure 5 and Figure 6 The discharge furnace door of the heating furnace 9 is located at its left end. The material is discharged from the discharge furnace door from right to left. The full-size flexible feeding platform is located outside the discharge furnace door of the heating furnace 9. In the initial state, its telescopic bracket 21 is in the retracted state. Therefore, the distance between the right end of the fixed roller section set therein and the left end of the internal transmission roller 91 set therein in the heating furnace 9 is relatively large (about 500mm).

[0049] Before the internal drive roller 91 conveys the material to its end, the drive source 3 in the full-size flexible feeding platform drives the first sprocket and chain assembly, causing the rollers 4 included in the fixed roller section to rotate around the axis. Simultaneously, the second sprocket and chain assembly drives the drive roller 22 of the telescopic roller section on the left and all the rollers 4 of the roller group to rotate, causing the telescopic bracket 21 to extend to the right. The fixed roller section gradually moves away from the roller group and towards the right end (left) of the internal drive roller 91 provided in the heating furnace 9. The distance between the right end of the fixed roller section and the end (left) of the internal drive roller 91 is at least no greater than half the length of the material in the left-right direction. Only then does the drive source 3 stop, while the internal drive roller 91 continues to convey the material to its end. Therefore, the material is being fed to the full-size flexible feeding platform. As the material platform continues to move forward, when its center of gravity is outside the internal drive roller 91, its front end has moved onto the full-size flexible receiving and feeding platform. Therefore, there is no need to consider the material getting stuck between the internal drive roller 91 and the fixed roller section. Then, at least after the center of gravity of the material falls onto the full-size flexible receiving and feeding platform, the drive source 3 drives the first sprocket and chain assembly in the opposite direction, causing the rollers 4 included in the fixed roller section to rotate in the opposite direction around the axis. Simultaneously, the second sprocket and chain assembly drives the drive roller 22 of the telescopic roller section on the left and all the rollers 4 of the roller group to rotate in the opposite direction, causing the telescopic bracket 21 to retract and reset to the left. Then, the fixed roller section gradually resets to the left and approaches the roller group to the initial position. After the material is conveyed to the preset position to the left, the drive source 3 stops rotating to start the next receiving and feeding cycle.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any changes, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A full-size flexible material receiving and feeding platform, characterized in that, The platform includes a frame and roller assembly, with a telescopic platform at the receiving end consisting of a fixed roller section and a telescopic roller section; among which, The telescopic roller section includes a telescopic bracket and multiple drive rollers rotatably connected to the telescopic bracket. One end of the telescopic bracket is connected to the platform frame, and the other end is connected to the fixed roller section. The drive rollers, roller group, and fixed roller section are connected in a driving manner. When the fixed roller section is driven by the first drive source, the transmission roller, roller group and fixed roller section rotate synchronously in the same direction. The second drive source located on the fixed roller section can drive the telescopic bracket to extend and retract along the material conveying direction to adjust the distance between the transmission rollers, so that the fixed roller section can move away from / close to the roller group.

2. The full-size flexible material receiving and feeding platform according to claim 1, characterized in that, The telescopic support includes at least two rhomboid frames, each of which is formed by four hinged edges, and adjacent rhomboid frames are hinged to each other. The transmission rollers are rotatably connected to the nodes of the rhomboid frame at equal intervals, and their axial direction is parallel to the roller axis of the fixed roller section and the roller group.

3. The full-size flexible material receiving and feeding platform according to claim 2, characterized in that, The platform frame has an extension section at one end facing the fixed roller section. In the conveying direction perpendicular to the material, each diamond-shaped frame included in the telescopic bracket is correspondingly slidably connected to the extension section via an adapter.

4. The full-size flexible material receiving and feeding platform according to claim 3, characterized in that, The fixed roller section includes two adjacent rollers that are connected to each other, as well as the fixed roller section and the rollers adjacent to the transmission roller, through a first chain sprocket assembly. The transmission rollers and roller groups are connected by a second chain and sprocket assembly.

5. The full-size flexible material receiving and feeding platform according to claim 4, characterized in that, The first drive source is fixed to the adapter adjacent to the fixed roller section via a first connecting plate; the first drive source is used to drive the first chain sprocket assembly, thereby causing the rollers included in the fixed roller section to rotate around the axis.

6. The full-size flexible material receiving and feeding platform according to claim 5, characterized in that, It also includes a chain tensioning mechanism for tensioning the second chain in the second chain sprocket assembly, which includes at least two tensioning wheels arranged along the conveying direction of the material, the two tensioning wheels being fixed to the adapter adjacent to the fixed roller section by a second connecting plate; The adapter is located between the first connecting plate and the second connecting plate in a direction perpendicular to the material conveying direction.

7. The full-size flexible material receiving and feeding platform according to claim 6, characterized in that, Both the first connecting plate and the second connecting plate are slidably connected to the extension end of the platform frame.

8. The full-size flexible material receiving and feeding platform according to claim 1, characterized in that, It also includes a displacement sensor for monitoring the extension and retraction stroke of the telescopic support.

9. A thermoforming production line, characterized in that, Includes a heating furnace, and a full-size flexible material receiving and feeding platform as described in any one of claims 1 to 8; wherein, The heating furnace is equipped with a feeding furnace door, a discharging furnace door, and an internal transmission roller between the two furnace doors. The receiving end of the full-size flexible feeding platform is arranged opposite to the discharging furnace door to receive the material that is transported to the discharging furnace door by the internal transmission roller.

10. The thermoforming production line according to claim 9, characterized in that, Before the fixed roller section of the telescopic platform at the receiving end of the full-size flexible receiving and feeding platform is relatively far away from the roller group included in the full-size flexible receiving and feeding platform, the distance between the end of the fixed roller section facing the discharge furnace door and the internal transmission roller is not less than the thickness of the discharge furnace door. After the fixed roller section of the telescopic platform at the receiving end of the full-size flexible material receiving and feeding platform is moved away from the roller group of the full-size flexible material receiving and feeding platform by a preset distance, the distance between the end of the fixed roller section facing the discharge furnace door and the internal transmission roller is not greater than half the length of the material along its conveying direction.

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