Double-layer sheet stock stacking mechanism and equipment based on mesh belt conveying

Abstract

The utility model discloses a double-layer sheet stock stacking mechanism and equipment based on mesh belt conveying. The equipment comprises a sheet stock heating station, a sheet stock stacking station and a double-layer sheet stock stacking mechanism which is used for connecting the two stations and is based on mesh belt conveying. The double-layer sheet material stacking mechanism comprises mesh belt conveying mechanisms arranged on the upper layer and the lower layer, a horizontally-movable mesh belt conveying mechanism and an obliquely-arranged mesh belt conveying mechanism. The sheet materials on the lower-layer mesh belt conveying mechanism are moved to the mesh belt conveying mechanism capable of horizontally moving and then horizontally move integrally, the sheet materials which come from the upper-layer mesh belt conveying mechanism and are conveyed by the obliquely-arranged mesh belt conveying mechanism are conveyed to the horizontally-moving mesh belt conveying mechanism, and therefore stacking of the upper-layer sheet materials and the lower-layer sheet materials is achieved. Stacking of the sheet materials is achieved through the mesh belt conveying mechanism, additional manipulators needing stacking operation are reduced, the whole equipment is compact, the processing efficiency can be improved, the upper sheet materials and the lower sheet materials are stacked and attached, and bumps and wrinkles are not prone to occurring.

Description

Technical Field

[0001] This utility model relates to sheet material heating and forming equipment. Background Technology

[0002] In many decorative applications, it is necessary to use two different materials stacked together to form the surface decorations of the product, in order to meet specific requirements for surface physical strength and aesthetic appearance. Before molding, the sheet material needs to be heated. However, heating two stacked sheets can lead to issues where the upper and lower layers cannot reach the required processing temperatures. Therefore, each layer needs to be heated separately before stacking. Because the sheet material softens after heating, the robotic arm places high demands on its handling capabilities. This is because the stacked sheets are prone to wrinkling, and the air barrier between the two layers can cause bulges. Both wrinkles and bulges prevent the upper and lower layers from fitting together properly, affecting the molding process. Summary of the Invention

[0003] The problem this invention aims to solve is that when sheet materials are heated and stacked, traditional robotic arm operations often result in wrinkles and bulges, which cause the upper and lower layers of sheet materials to not fit together properly, affecting the forming process of the molding machine.

[0004] To solve the above problems, the present invention adopts the following solution:

[0005] According to this utility model, a double-layer sheet stacking mechanism based on mesh belt conveying includes four mesh belt conveying mechanisms mounted on a frame. The four mesh belt conveying mechanisms are: a first mesh belt conveying mechanism, a second mesh belt conveying mechanism, a third mesh belt conveying mechanism, and a fourth mesh belt conveying mechanism. The second mesh belt conveying mechanism is positioned above and parallel to the first mesh belt conveying mechanism, with the same conveying direction. The third mesh belt conveying mechanism is mounted on a driven translation frame, allowing it to reciprocate along the conveying direction of the first mesh belt conveying mechanism under drive. The third mesh belt conveying mechanism has the same conveying direction as the first mesh belt conveying mechanism and is not higher than the first mesh belt conveying mechanism, so that when the third mesh belt conveying mechanism moves towards the first mesh belt conveying mechanism... When the distance between the two is closest, the third mesh belt conveyor can connect with the conveying end of the first mesh belt conveyor, so that the third mesh belt conveyor can at least receive the sheet material conveyed by the first mesh belt conveyor; the fourth mesh belt conveyor is inclined, with its conveying start end connecting with the conveying end of the second mesh belt conveyor, and its conveying end tilting downwards to connect with the translating third mesh belt conveyor, so that the sheet material conveyed by the second mesh belt conveyor can be received by the fourth mesh belt conveyor, and the sheet material conveyed by the fourth mesh belt conveyor can be received by the translating third mesh belt conveyor; the length of the third mesh belt conveyor is greater than the length of the conveyed sheet material, so that the conveyed sheet material can at least be laid flat on the third mesh belt conveyor.

[0006] Furthermore, according to the double-layer sheet stacking mechanism of this utility model, the translation frame is mounted on the frame via a translation track mechanism and a translation drive mechanism; the translation track mechanism is used to provide track guidance and support for the translation of the translation frame; the translation drive mechanism is used to provide power for the translation of the translation frame.

[0007] Furthermore, according to the double-layer sheet stacking mechanism of this utility model, the translation frame includes at least two parallel translation beams arranged on both sides; the translation track mechanism includes a positioning wheel located above the translation beam, a support wheel located below the translation beam, and a track smoothing guide mechanism; the positioning wheel and the support wheel are arranged on the frame and clamp the translation beam from above and below; the track smoothing guide mechanism includes a slide rail arranged on the translation beam and a slider arranged on the frame that engages with the slide rail.

[0008] Furthermore, according to the double-layer sheet stacking mechanism of this utility model, the translation frame includes at least two parallel translation beams on both sides; the translation drive mechanism includes gears and racks; the gears are disposed at both ends of a synchronous shaft; the synchronous shaft is connected to a translation motor; the racks are disposed on the translation beams; and the racks on the two translation beams respectively mesh with the gears at both ends of the synchronous shaft.

[0009] Furthermore, the double-layer sheet stacking mechanism of this utility model also includes a first sheet detection mechanism disposed at the conveying end of the second mesh belt conveyor mechanism and a second sheet detection mechanism disposed at the conveying end of the fourth mesh belt conveyor mechanism; the sheet detection mechanism is used to detect whether there is sheet material at a set position.

[0010] According to the present invention, a mesh belt conveyor-based device includes the aforementioned double-layer sheet stacking mechanism, sheet heating station, and sheet stacking station; the first mesh belt conveyor mechanism and the second mesh belt conveyor mechanism pass through the sheet heating station; within the sheet heating station, heating devices for heating the sheets on the first mesh belt conveyor mechanism and the second mesh belt conveyor mechanism are respectively provided below the first mesh belt conveyor mechanism and the second mesh belt conveyor mechanism; the third mesh belt conveyor mechanism and the fourth mesh belt conveyor mechanism are located at the sheet stacking station.

[0011] Furthermore, the device according to this utility model also includes a transition station located between the sheet heating station and the sheet stacking station; the first mesh belt conveyor and the second mesh belt conveyor pass through the transition station.

[0012] Furthermore, according to the equipment of this utility model, between the sheet heating station and the transition station, a third sheet detection mechanism is provided on the first mesh belt conveyor, and a fourth sheet detection mechanism is provided on the second mesh belt conveyor; the sheet detection mechanism is used to detect whether sheet material exists at a set position; the third sheet detection mechanism and the fourth sheet detection mechanism are used to determine whether the sheet material has finished heating and should be discharged based on whether sheet material exists at the set position.

[0013] The technical effects of this utility model are as follows:

[0014] The stacking of sheet materials in this invention is achieved by the mesh belt conveyor mechanism itself, which reduces the need for additional robotic arms to perform stacking operations, making the entire device compact and improving processing efficiency.

[0015] Because the stacking of sheet materials is achieved naturally by the conveying process of the mesh belt conveyor, no wrinkles will appear during stacking;

[0016] Because the sheet materials are stacked step by step by the mesh belt conveyor in the direction of sheet material conveying, the air between the upper and lower sheet materials is naturally expelled during the stacking process, so no bulging will occur;

[0017] Compared to the direct transport of the lower layer of sheet material by the mesh belt conveyor when stacking sheets, the overall translation method of this utility model can avoid the problem of tipping that is easily caused by the reduced friction between the mesh belt and the sheet material due to the vibration of the mesh belt during transport. Attached Figure Description

[0018] Figure 1 and Figure 2 This is a schematic diagram of the overall structure of the translation frame from different angles in different positions according to an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the installation structure of the translation frame according to an embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the installation structure of the fourth mesh belt conveyor mechanism of this utility model.

[0021] In the above figures,

[0022] 101 is the first mesh belt conveyor mechanism, 102 is the second mesh belt conveyor mechanism, 103 is the third mesh belt conveyor mechanism, 104 is the fourth mesh belt conveyor mechanism, 11 is the driving roller, 12 is the driven roller, 13 is the mesh belt frame, and 14 is the conveyor motor.

[0023] 2 is the translation frame, 21 is the translation beam, and 22 is the support beam;

[0024] 3 is the sheet material detection mechanism, 301 is the first sheet material detection mechanism, 302 is the second sheet material detection mechanism, 303 is the third sheet material detection mechanism, 304 is the fourth sheet material detection mechanism, 31 is the detection bracket, and 32 is the photoelectric sensor.

[0025] 4 is the translation track mechanism, 41 is the track smoothing guide mechanism, 411 is the slide rail, 412 is the slider, 42 is the support wheel, and 43 is the locking wheel;

[0026] 5 is the translation drive mechanism, 51 is the rack, 52 is the synchronous shaft, 53 is the gear, and 54 is the translation motor;

[0027] 601 is the first material support, 602 is the first material support, 603 is the third material support, and 604 is the fourth material support;

[0028] 801 is the sheet heating station, 802 is the transition station, and 803 is the sheet stacking station;

[0029] 9 is the frame, 91 is the first frame, 92 is the second frame, 93 is the hinge, and 931 is the hinge frame. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Figure 1 and Figure 2 An example of an apparatus, specifically a forming machine, is provided, comprising a sheet material feeding station, a sheet material heating station 801, a sheet material stacking station 803, and a sheet material mold forming station. The sheet material feeding station and the sheet material mold forming station are not shown in the figures, but this does not impede the understanding of this embodiment by those skilled in the art. A double-layer sheet material stacking mechanism is configured between the sheet material heating station 801 and the sheet material stacking station 803. The double-layer sheet material stacking mechanism includes four mesh belt conveying mechanisms mounted on a frame 9. The frame 9 includes a first frame 91 located at the sheet material heating station 801 and a second frame 92 located at the sheet material stacking station 803. The four mesh belt conveying mechanisms are: a first mesh belt conveying mechanism 101, a second mesh belt conveying mechanism 102, a third mesh belt conveying mechanism 103, and a fourth mesh belt conveying mechanism 104.

[0032] Mesh belt conveyor mechanism, refer to Figure 4 The conveyor belt includes a drive roller 11 and a driven roller 12 arranged parallel to each other, a mesh belt frame 13 disposed between the drive roller 11 and the driven roller 12 for supporting the mesh belt, and a mesh belt wound around the drive roller 11 and the driven roller 12. The drive roller 11 is connected to a conveyor motor. The mesh belt is a wire mesh woven from stainless steel wire. Mesh belt conveyor mechanisms are familiar to those skilled in the art and will not be described in detail here.

[0033] The first mesh belt conveyor 101 and the second mesh belt conveyor 102 pass through the sheet heating station 801, with one end located at the sheet heating station 801 and the other end extending to the sheet stacking station 803, thus connecting the sheet heating station 801 and the sheet stacking station 803. The second mesh belt conveyor 102 and the first mesh belt conveyor 101 are arranged vertically, that is, the second mesh belt conveyor 102 is located above the first mesh belt conveyor 101, parallel to the first mesh belt conveyor 101, and in the same conveying direction as the first mesh belt conveyor 101. The conveying direction of the first mesh belt conveyor 101 and the second mesh belt conveyor 102 is from the sheet heating station 801 to the sheet stacking station 803. Heating devices are respectively arranged below the first mesh belt conveyor 101 and the second mesh belt conveyor 102 within the sheet heating station 801. The heating devices are used to heat the sheet material on the mesh belts of the first mesh belt conveyor 101 and the second mesh belt conveyor 102. The heating device is not shown in the figure, but this does not preclude understanding by those skilled in the art.

[0034] The third mesh belt conveyor 103 is a movable mesh belt conveyor mechanism, mounted on a driven translation frame 2, allowing it to translate with the translation frame 2 under drive. The translation of the third mesh belt conveyor 103 is a reciprocating translation along the conveying direction of the first mesh belt conveyor 101. This reciprocating translation allows the third mesh belt conveyor 103 to move closer to or further away from the first mesh belt conveyor 101. The third mesh belt conveyor 103 shares the same conveying direction as the first mesh belt conveyor 101 and is not higher than it, ensuring that when the third mesh belt conveyor 103 moves towards the first mesh belt conveyor 101 to its closest point, it can connect with the conveying end of the first mesh belt conveyor 101, thus enabling the third mesh belt conveyor 103 to receive at least the sheet material conveyed by the first mesh belt conveyor 101.

[0035] The fourth mesh belt conveyor mechanism 104 is inclined. In this embodiment, to facilitate adjustment of the inclination angle of the fourth mesh belt conveyor mechanism 104, refer to... Figure 4 The top end of the fourth mesh belt conveyor 104 is mounted on the second frame 92 via a hinge 93 provided on the hinge frame 931, allowing the fourth mesh belt conveyor 104 to rotate around the axis of the hinge 93.

[0036] The top of the fourth mesh belt conveyor 104 is its conveying start point, which connects to the conveying end point of the second mesh belt conveyor 102, allowing the sheet material conveyed by the second mesh belt conveyor 102 to be received by the fourth mesh belt conveyor 104. The conveying end point of the fourth mesh belt conveyor 104 is its downwardly sloping bottom end, which connects to the translating third mesh belt conveyor 103, allowing the sheet material conveyed by the fourth mesh belt conveyor 104 to be received by the translating third mesh belt conveyor 103.

[0037] More specifically, in this embodiment, the reciprocating translation of the third mesh belt conveyor 103 has two stopping positions: the first stopping position is when the third mesh belt conveyor 103 moves away from the first mesh belt conveyor 101, such as... Figure 1 In the illustrated configuration, the conveying end of the third mesh belt conveyor 103 is connected to the subsequent workstation, and the conveying beginning of the third mesh belt conveyor 103 is connected to the conveying end of the fourth mesh belt conveyor 104; when the third mesh belt conveyor 103 approaches the first mesh belt conveyor 101, such as Figure 2 In the illustrated configuration, the starting point of the third mesh belt conveyor 103 is connected to the ending point of the first mesh belt conveyor 101.

[0038] The working principle of this embodiment is as follows:

[0039] When the sheet material is heated at the sheet material heating station 801, the upper layer of sheet material is laid flat on the second mesh belt conveyor mechanism 102 by the transfer robot at the sheet material loading station, and the lower layer of sheet material is laid flat on the first mesh belt conveyor mechanism 101 by the transfer robot at the sheet material loading station. The upper and lower layers of sheet material are heated by heating devices located below the second mesh belt conveyor mechanism 102 and the first mesh belt conveyor mechanism 101, respectively. The heated upper and lower layers of sheet material are then moved to the sheet material stacking station 803 by the second mesh belt conveyor mechanism 102 and the first mesh belt conveyor mechanism 101, respectively. When the sheet material is conveyed to the sheet material stacking station 803, the third mesh belt conveyor mechanism 103 connects to the conveying end of the first mesh belt conveyor mechanism 101. The upper sheet material is conveyed to the fourth mesh belt conveyor 104 via the connection between the second mesh belt conveyor 102 and the fourth mesh belt conveyor 104, and then the fourth mesh belt conveyor 104 tilts downwards to convey the sheet material. The lower sheet material is conveyed to the third mesh belt conveyor 103 via the connection between the first mesh belt conveyor 101 and the third mesh belt conveyor 103. When the sheet material is carried by the third mesh belt conveyor 103, the third mesh belt conveyor 103 stops working and then directly starts to move horizontally, so that the third mesh belt conveyor 103 moves away from the first mesh belt conveyor 101. By matching and controlling the horizontal movement speed of the third mesh belt conveyor 103 and the conveying speed of the fourth mesh belt conveyor 104, the upper sheet material on the fourth mesh belt conveyor 104 is just placed on top of the lower sheet material carried by the third mesh belt conveyor 103 when it is received by the third mesh belt conveyor 104, thus completing the stacking of the upper and lower heated sheet materials. Obviously, under the above working principle, since the sheet material needs to be laid flat on the third mesh belt conveyor mechanism 103, and the stacking of the upper and lower layers of sheet material is achieved by the overall translation of the third mesh belt conveyor mechanism 103, the length of the third mesh belt conveyor mechanism 103 is greater than the length of the sheet material being conveyed. It should be noted that the upper and lower layers of sheet material are usually the same size.

[0040] Reference Figure 3 The translation frame 2 is a frame structure composed of two parallel translation beams 21 respectively arranged on both sides and several support beams 22 connecting the two translation beams 21. In this embodiment, the support beams 22 are vertically connected to the translation beams 21. In other optional embodiments, the support beams 22 may also be obliquely connected to the translation beams 21. In this embodiment, the translation frame 2 is mounted on the frame 9 via a translation track mechanism 4 and a translation drive mechanism 5. The frame 9 here is more specifically the second frame 92. The translation frame 2 achieves the aforementioned drivable translation through the track guidance and support provided by the translation track mechanism 4 and the power provided by the translation drive mechanism 5.

[0041] The translation track mechanism 4 includes a track smoothing guide mechanism 41, a support wheel 42, and a locking wheel 43. The track smoothing guide mechanism 41 includes two slide rails 411 respectively disposed on the outer sides of the two translation beams 21, and a slider 412 disposed on the second frame 92 and engaging with the slide rails 411. The support wheel 42 and the locking wheel 43 are horizontally mounted on the second frame 92. The support wheel 42 is located below the translation beams 21, with its wheel surface in close contact with the bottom surface of the translation beams 21; the locking wheel 43 is located above the translation beams 21, with its wheel surface in close contact with the top surface of the translation beams 21, thus allowing the locking wheel 43 and the support wheel 42 to clamp the translation beams 21 above and below, respectively. When the translation beams 21 translate relative to the second frame 92, the locking wheel 43 and the support wheel 42 roll along the top and bottom surfaces of the translation beams 21 above and below, respectively.

[0042] The translation drive mechanism 5 is implemented by a rack and pinion system. Specifically, the translation drive mechanism 5 includes a rack 51, a synchronous shaft 52, gears 53, and a translation motor 54. There are two racks 51. The two racks 51 are respectively mounted on the bottom surfaces of the two translation beams 21 and fixed to the translation beams 21. There are two gears 53, which are respectively mounted at both ends of the synchronous shaft 52. The gears 53 at both ends of the synchronous shaft 52 mesh with the two racks 51. The synchronous shaft 52 is mounted on the second frame 92 and connected to the translation motor 54. Thus, the translation motor 54 drives the synchronous shaft 52 to rotate, which in turn drives the gears 53 to rotate. Through the meshing of the gears 53 and the racks 51, the translation beams 21 are moved, thereby realizing the translation of the entire translation frame 2.

[0043] Furthermore, in this embodiment, a transition station 802 is provided between the sheet heating station 801 and the sheet stacking station 803. The first mesh belt conveyor 101 and the second mesh belt conveyor 102 pass through the transition station 802.

[0044] Furthermore, to facilitate the conveying and stacking control of the upper and lower layers of sheet materials, this embodiment is equipped with multiple sheet material detection mechanisms. Specifically, a first sheet material detection mechanism 301 is provided at the conveying end of the second mesh belt conveyor 102, and a second sheet material detection mechanism 302 is provided at the conveying end of the fourth mesh belt conveyor 104; at the outlet of the sheet material heating station 801, i.e., between the sheet material heating station 801 and the transition station 802, a third sheet material detection mechanism 303 is provided on the first mesh belt conveyor 101, and a fourth sheet material detection mechanism 304 is provided on the second mesh belt conveyor 102. The sheet material detection mechanisms are used to detect whether sheet materials are present at a set position. In particular, the third sheet material detection mechanism 303 and the fourth sheet material detection mechanism 304 are also used to determine whether the sheet material has finished heating and should be discharged based on whether sheet materials are present at the set position.

[0045] In a mesh belt conveyor mechanism, the mesh belt is wound around the active roller and the passive roller. Due to this characteristic, when two mesh belt conveyors are connected, the conveying plane cannot be directly connected. In this embodiment, to facilitate the connection between two mesh belt conveyors, a height difference is set between the two mesh belt conveyors, and a material support plate is set at the conveying end of the mesh belt conveyor mechanism, thereby achieving the connection of the sheet material conveying plane. Specifically, in this embodiment, the height of the third mesh belt conveyor mechanism 103 is lower than that of the first mesh belt conveyor mechanism 101, and a first material support 601 is set at the conveying end of the first mesh belt conveyor mechanism 101. In addition, a second material support 602 is set at the conveying end of the second mesh belt conveyor mechanism 102; a third material support 603 is set at the conveying end of the third mesh belt conveyor mechanism 103; and a fourth material support 604 is set at the conveying end of the fourth mesh belt conveyor mechanism 104. The first material support 601, the second material support 602, the third material support 603, and the fourth material support 604 are the aforementioned material support plates, which are plate structures.

[0046] It should be noted that the overall translational conveying of the lower layer sheet material after the third mesh belt conveyor mechanism 103 stops, thereby achieving stacking, has the following technical effects:

[0047] If the third mesh belt conveyor 103 is fixed instead of mounted on a movable frame, the lower sheet material is conveyed by the third mesh belt conveyor 103 to stack with the upper sheet material on the inclined fourth mesh belt conveyor 104. When the third mesh belt conveyor 103 conveys the sheet material, the vibration caused by the movement of the mesh belt results in dynamic friction between the lower sheet material and the mesh belt. This dynamic friction is much less than the static friction between the lower sheet material and the mesh belt when it is moved by the movable frame. Furthermore, due to the characteristics of the mesh belt itself, the fourth mesh belt conveyor 104 and the third mesh belt conveyor 103 cannot be seamlessly connected; a support plate is needed at the end of the fourth mesh belt conveyor 104 for auxiliary transition. Therefore, when the upper and lower sheet materials are stacked, because they need to pass through the support plate, the speed of the upper sheet material's front end when it contacts the lower sheet material is affected by friction from the support plate, preventing it from perfectly matching the speed of the mesh belt. This also results in a speed difference when the upper sheet material's front end contacts the lower sheet material. This speed difference causes the front end of the upper sheet to pull on the front end of the lower sheet. Although the force of this pulling is not large, the friction between the lower sheet and the mesh belt is small due to the dynamic friction. This small pulling force causes the front end of the lower sheet to be pulled. In particular, since the lower sheet itself is thinner and becomes softer after heating, it is easier for the lower sheet to be pulled, thus forming wrinkles at the front end of the lower sheet.

[0048] When the translation frame of this utility model is translated, the third mesh belt conveyor mechanism 103 stops working. There is static friction with greater friction between the lower sheet and the mesh belt. The front end of the upper sheet pulls on the front end of the lower sheet, but cannot pull the lower sheet. This reduces the possibility of the lower sheet being pulled when stacking, thus avoiding the formation of wrinkles at the front end of the lower sheet.

Claims

1. A web-conveyor-based double sheet material stacking mechanism, characterized by, The four net belt conveying mechanisms are arranged on the frame; the four net belt conveying mechanisms are respectively a first net belt conveying mechanism, a second net belt conveying mechanism, a third net belt conveying mechanism and a fourth net belt conveying mechanism; the second net belt conveying mechanism is arranged above the first net belt conveying mechanism and is parallel to the first net belt conveying mechanism, and the conveying directions are the same; the third net belt conveying mechanism is arranged on the driven translation frame, so that the third net belt conveying mechanism can be driven to reciprocate along the conveying direction of the first net belt conveying mechanism; the conveying direction of the third net belt conveying mechanism is the same as that of the first net belt conveying mechanism, and the third net belt conveying mechanism is not higher than the first net belt conveying mechanism, so that when the third net belt conveying mechanism moves to the first net belt conveying mechanism to the closest distance, the third net belt conveying mechanism can be connected with the conveying end of the first net belt conveying mechanism, so that the third net belt conveying mechanism can at least receive the sheet material conveyed by the first net belt conveying mechanism; the fourth net belt conveying mechanism is arranged obliquely, the conveying start end of the fourth net belt conveying mechanism is connected with the conveying end of the second net belt conveying mechanism, and the conveying end of the fourth net belt conveying mechanism is obliquely downward to be connected with the third net belt conveying mechanism in translation, so that the sheet material conveyed by the second net belt conveying mechanism can be received by the fourth net belt conveying mechanism, and the sheet material conveyed by the fourth net belt conveying mechanism can be received by the third net belt conveying mechanism in translation; the length of the third net belt conveying mechanism is greater than the length of the conveyed sheet material, so that the conveyed sheet material can be at least laid on the third net belt conveying mechanism.

2. The bilayer tablet stacker mechanism of claim 1, wherein, The translation frame is arranged on the frame through a translation rail mechanism and a translation driving mechanism; the translation rail mechanism is used for providing track guidance and support for the translation of the translation frame; and the translation driving mechanism is used for providing power for the translation of the translation frame.

3. The bilayer tablet stacker mechanism of claim 2, wherein, The translation frame at least includes translation beams arranged in parallel on two sides; the translation rail mechanism includes a clamping wheel above the translation beams, a supporting wheel below the translation beams and a track smooth guiding mechanism; the clamping wheel and the supporting wheel are arranged on the frame and clamp the translation beams up and down; and the track smooth guiding mechanism includes a sliding rail arranged on the translation beams and a sliding block arranged on the frame and engaged with the sliding rail.

4. The bilayer tablet stacker mechanism of claim 2, wherein, The translation frame at least includes translation beams arranged in parallel on two sides; the translation driving mechanism includes a gear and a rack; the gear is arranged at two ends of a synchronous shaft; the synchronous shaft is connected with a translation motor; and the rack is arranged on the translation beams; the racks on the two translation beams are respectively engaged with the gears at the two ends of the synchronous shaft.

5. The bilayer tablet stacking mechanism according to claim 1 or 2 or 3 or 4, wherein, The first sheet material detection mechanism arranged at the conveying end of the second net belt conveying mechanism and the second sheet material detection mechanism arranged at the conveying end of the fourth net belt conveying mechanism are further included; the sheet material detection mechanism is used for detecting whether there is sheet material at a set position.

6. A mesh belt conveyor-based apparatus, characterized by, The double-layer sheet material stacking mechanism, sheet material heating station and sheet material stacking station of any one of claims 1 to 5; the first and second web belt conveying mechanisms pass through the sheet material heating station; below the first and second web belt conveying mechanisms in the sheet material heating station, heating devices are arranged for heating the sheet materials on the first and second web belt conveying mechanisms; the third and fourth web belt conveying mechanisms are located in the sheet material stacking station.

7. The apparatus of claim 6, wherein, A transition station is further arranged between the sheet material heating station and the sheet material stacking station; the first and second web belt conveying mechanisms pass through the transition station.

8. The apparatus of claim 7, wherein, Between the sheet material heating station and the transition station, a third sheet material detection mechanism is arranged on the first web belt conveying mechanism, and a fourth sheet material detection mechanism is arranged on the second web belt conveying mechanism; the sheet material detection mechanisms are used for detecting whether there is a sheet material at a set position; the third and fourth sheet material detection mechanisms are used for judging whether the sheet material is discharged after heating is completed according to whether there is a sheet material at the set position.

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