Conveying device with compact structure and material receiving and discharging machine

Abstract

The invention relates to the technical field of material receiving and discharging equipment, in particular to a compact-structure conveying device and a material receiving and discharging machine. The compact-structure conveying device comprises a translation conveying module, a first lifting driving mechanism, a lifting seat, a conveying driving mechanism and a rotation driving mechanism; the translation conveying module comprises a supporting seat, a translation plate, a driven belt wheel, a conveying belt, a rack, a transmission gear meshed with the rack, a supporting rod arranged on the supporting seat and a supporting rolling piece rotationally connected to the supporting rod, the conveying driving mechanism is used for driving the conveying belt to rotate, and the rotation driving mechanism is used for driving the transmission gear to rotate; the translation plate is provided with a through hole and a translation groove, the supporting rod penetrates through the through hole, and the supporting rolling piece abuts against the inner wall of the translation groove in a rolling mode. Translation of the translation plate and rotation of the conveying belt are flexibly integrated together, the structural design is ingenious and compact, various combined conveying modes can be formed, the application range is wide, the translation conveying module is in a cantilever state, and the compact layout of the conveying device and an external structure is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of material collecting and unloading equipment, and in particular to a conveying device and a material collecting and unloading machine with a compact structure. Background Art

[0002] When a material collecting and unloading machine collects or discharges materials, a conveying device or a robot is generally required to transport the materials to the loading frame; when a conveying device is used to collect and unload materials, the mechanisms with corresponding action functions are generally stacked and assembled together according to the actions involved in collecting and unloading materials. For example: Among the existing patents, the Chinese patent document with application number 201820753685.0 discloses a lifting and translation belt seat of an intelligent flexible manufacturing conveying platform, including a guide rail, a synchronous belt, a synchronous wheel, an upper fixed plate and a motor, wherein the guide rail is connected to a motor fixing block, the motor is fixed on the motor fixing block, the motor is connected to a driving wheel, the driving wheel is connected to the synchronous wheel through the synchronous belt, a bearing is arranged in the middle of the synchronous wheel, a nut is arranged on the bearing, the upper fixed bottom plate is arranged at the bottom of the guide rail, a cylinder is installed under the upper fixed bottom plate, a bottom fixed bottom plate is connected under the cylinder, and a guide shaft and a linear bearing are arranged between the upper fixed bottom plate and the bottom fixed bottom plate; the patent document can realize lifting and rotation of the synchronous belt to meet the lifting and conveying of materials. Based on the patent document, if the translation function is also desired, a translation drive mechanism is generally added directly below the bottom fixed base plate, and the translation drive mechanism drives the bottom fixed base plate to translate. The simple stacking of functional modules makes the structure less compact and requires a large space, which is not conducive to the compact layout of the devices in the device. Therefore, the defect is very obvious, and a solution is urgently needed. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a conveying device and a material collecting and unloading machine with a compact structure.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] The transmission gear of the present invention is a gear mounted on the support frame, and the gear is mounted on the support frame to drive the transmission gear of the present invention to rotate.

[0006] Furthermore, there are two translation grooves, which are located on both sides of the through hole. There are multiple support rods, which are arranged in a straight line. Each support rod is rotatably connected to two support rollers, and the two support rollers on each support rod are respectively arranged in the two translation grooves.

[0007] Furthermore, there are two racks, the conveyor belt is located between the two racks, two circles of tooth groups are arranged on the circumferential side of the transmission gear, the two circles of tooth groups are respectively engaged with the two racks, an avoidance space is formed between the two circles of tooth groups, and the conveyor belt is located in the avoidance space.

[0008] Furthermore, the rotation drive mechanism includes a first rotating shaft rotatably connected to the lifting seat, a driving gear sleeved on the first rotating shaft, and a first rotating driver installed on the lifting seat and used to drive the first rotating shaft to rotate, and the driving gear is meshed with the transmission gear; the conveying drive mechanism includes a second rotating shaft rotatably connected to the lifting seat, a transmission wheel sleeved on the first rotating shaft, and a second rotating driver installed on the lifting seat and used to drive the second rotating shaft to rotate, and the conveying belt is drivingly wound around the transmission wheel.

[0009] Furthermore, the number of translational conveying modules, the number of driving gears and the number of transmission wheels are all multiple, and the multiple translational conveying modules, the multiple driving gears and the multiple transmission wheels are respectively arranged in one-to-one correspondence, and the multiple translational conveying modules are arranged in parallel. The conveying drive mechanism is used to drive the conveyor belts of all translational conveying modules to rotate, and the rotation drive mechanism is used to drive the transmission gears of all translational conveying modules to rotate.

[0010] Furthermore, each translation conveying module has two transmission gears, and the two transmission gears are located on both sides of the driving gear.

[0011] Furthermore, a guide belt support plate is installed on the top surface of the translation plate, and a limiting groove is concavely provided on the top surface of the guide belt support plate, and the conveyor belt is movably arranged in the limiting groove.

[0012] Furthermore, the support seat is rotatably connected to a tensioning guide wheel, and the tensioning guide wheel is used to contact the conveyor belt.

[0013] Furthermore, there are two tensioning guide pulleys, which are respectively located on both sides above the driving wheel.

[0014] The present invention also provides a material collecting and unloading machine, including a second lifting drive mechanism, a loading frame and the above-mentioned conveying device, the loading frame is installed at the lifting end of the second lifting drive mechanism, the conveying device is located on one side of the loading frame, and the loading frame is provided with a multi-layer loading structure from top to bottom, the loading structure includes a side slot and a loading trough connected to the top port of the side slot, and the side slot is used for allowing the translation plate to be inserted into the loading frame.

[0015] The beneficial effects of the present invention are as follows: in practical application, the first lifting drive mechanism drives the lifting seat and the translation conveying module to lift and lower. The lifted translation conveying module can place the material it carries on the external structure, or lift the material of the external structure; the rotating drive mechanism drives the transmission gear to rotate, and the rotating transmission gear meshes with the rack to drive the rack to translate the translation plate and the two slave pulleys. During the translation of the translation plate, the transmission gear not only meshes with the rack for transmission, but also supports the translation plate. The supporting rolling element rolls against the inner wall of the translation groove. The supporting rolling element can not only support the translation plate, but also guide the movement of the translation plate, thereby improving the stability of the movement of the translation plate. Moreover, since the two slave pulleys move synchronously with the translation plate, under the cooperation of the slave pulley and the conveyor belt, as the translation plate moves, the conveyor belt will move accordingly, and the moving conveyor belt will drive the material to follow the translation plate to move; the conveying drive mechanism drives the conveyor belt to rotate, and the rotating conveyor belt will convey the material. When in use, the translation conveying module is in a cantilever state, which is conducive to the compact layout of the conveying device and the external structure (such as: roller conveying mechanism, etc.), greatly reducing the size of the equipment, and can not only independently complete the lifting of the translation conveying module, the translation of the translation plate or the rotation of the conveyor belt, but also form a variety of combined conveying modes by combining the lifting of the translation conveying module, the translation of the translation plate and the rotation of the conveyor belt to form a variety of combined conveying modes, so as to meet the needs of material transportation in different scenes. The present invention integrates the translation of the translation plate and the rotation flexibility of the conveyor belt, and the structural design is ingenious and compact, which can form a variety of combined conveying modes, so as to meet the needs of material transportation in different scenes, with strong practicality, good versatility, and a wide range of use. The translation conveying module is in a cantilever state, which is conducive to the compact layout of the conveying device and the external structure (such as: roller conveying mechanism, etc.), greatly reducing the size of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the unwinding and rewinding machine of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the translation conveying module of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the translation conveying module of the present invention from another perspective.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the translation plate of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the transmission gear of the present invention.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the first lifting drive mechanism, the conveying drive mechanism and the rotating drive mechanism of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the support seat, translation plate, conveyor belt, support rod and support rolling element of the present invention.

[0023] Description of reference numerals:

[0024] 1. Translation conveying module; 2. First lifting drive mechanism; 3. Lifting seat; 4. Conveying drive mechanism; 5. Rotation drive mechanism; 6. Support seat; 7. Translation plate; 8. From pulley; 9. Conveyor belt; 10. Rack; 11. Transmission gear; 12. Support rod; 13. Support rolling element; 14. Through hole; 15. Translation slot; 16. Tooth group; 17. First rotating shaft; 18. Driving gear; 19. First rotation driver; 20. Second rotating shaft; 21. Transmission wheel; 22. Second rotation driver; 23. Guide belt support plate; 24. Limiting slot; 25. Tensioning guide belt wheel; 26. Second lifting drive mechanism; 27. Loading frame; 28. Side slot; 29. ​​Loading trough; 30. Material; 31. Avoidance space. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0026] like Figures 1 to 7As shown, the present invention provides a compact conveying device, which includes a translation conveying module 1, a first lifting drive mechanism 2, a lifting seat 3 installed at the lifting end of the first lifting drive mechanism 2, and a conveying drive mechanism 4 and a rotating drive mechanism 5 respectively arranged on the lifting seat 3. The translation conveying module 1 includes a support seat 6 installed on the lifting seat 3, a translation plate 7 cantilevered and translated on the support seat 6, two slave pulleys 8 respectively rotatably connected to the two ends of the translation plate 7, a conveying belt 9 drivingly sleeved outside the two slave pulleys 8, a rack 10 arranged on the bottom surface of the translation plate 7, and a conveying drive mechanism 4 and a rotating drive mechanism 5 respectively arranged on the lifting seat 3. The support seat 6 is provided with a transmission gear 11 meshing with the rack 10, a support rod 12 installed on the support seat 6 and a support rolling member 13 rotatably connected to the support rod 12, and the translation plate 7 is located in the annular space of the conveyor belt 9. The conveying drive mechanism 4 is used to drive the conveyor belt 9 to rotate, and the rotation drive mechanism 5 is used to drive the transmission gear 11 to rotate. The translation plate 7 is provided with a through hole 14 and a translation groove 15 connected to the through hole 14, the support rod 12 passes through the through hole 14, and the support rolling member 13 rolls against the inner wall of the translation groove 15. The extension direction of the through hole 14 and the translation groove 15 is parallel to the translation direction of the translation plate 7.

[0027] In practical applications, the first lifting drive mechanism 2 drives the lifting seat 3 to lift the translation conveying module 1. The lifting translation conveying module 1 can place the material 30 it carries on an external structure (such as a roller conveying mechanism, etc.), or lift the material 30 of the external structure; the rotating drive mechanism 5 drives the transmission gear 11 to rotate, and the rotating transmission gear 11 engages with the rack 10 to drive the rack 10 to translate the translation plate 7 and the two slave pulleys 8. In the process of translation of the translation plate 7, the transmission gear 11 not only engages with the rack 10 for transmission, but also supports the translation plate 7. The supporting rolling member 13 rolls against the inner wall of the translation groove 15, and the supporting rolling member 13 can not only support the translation plate 7, but also guide the movement of the translation plate 7, thereby improving the stability of the movement of the translation plate 7. Moreover, since the two slave pulleys 8 move synchronously with the translation plate 7, under the cooperation of the slave pulleys 8 and the conveyor belt 9, as the translation plate 7 moves, the conveyor belt 9 will move accordingly, and the moving conveyor belt 9 will drive the material 30 to follow the movement of the translation plate 7; the conveying drive mechanism 4 drives the conveyor belt 9 to rotate, and the rotating conveyor belt 9 will transport the material 30. When in use, the translational conveying module 1 is in a cantilever state, which is conducive to the compact layout of the conveying device and the external structure (such as: roller conveying mechanism, etc.), greatly reducing the volume of the equipment, and can independently complete the lifting and lowering of the translational conveying module 1, the translation of the translation plate 7 or the rotation of the conveyor belt 9, and also by combining at least two of the lifting and lowering of the translational conveying module 1, the translation of the translation plate 7 and the rotation of the conveyor belt 9 to form a variety of combined conveying methods, thereby meeting the needs of conveying materials 30 in different scenarios.

[0028] The present invention integrates the translation of the translation plate 7 and the rotation flexibility of the conveyor belt 9. The structural design is ingenious and compact, and can form a variety of combined conveying modes, so as to meet the needs of conveying materials 30 in different scenarios. It has strong practicality, good versatility, and a wide range of uses. The translation conveying module 1 is in a cantilever state, which is conducive to the compact layout of the conveying device and the external structure (such as: roller conveying mechanism, etc.), greatly reducing the size of the equipment.

[0029] Specifically, the supporting rolling element 13 may be a roller or a bearing.

[0030] In this embodiment, there are two translation grooves 15, which are located on both sides of the through hole 14. There are multiple support rods 12, which are arranged in a straight line. Each support rod 12 is rotatably connected to two support rollers 13, and the two support rollers 13 on each support rod 12 are respectively arranged in the two translation grooves 15. This structural design increases the number of support rollers 13, increases the force supporting the translation plate 7, and further improves the stability of the translation of the translation plate 7.

[0031] In this embodiment, there are two racks 10, and the conveyor belt 9 is located between the two racks 10. Two circles of tooth groups 16 are provided on the circumferential side of the transmission gear 11. The two circles of tooth groups 16 are respectively engaged with the two racks 10. An avoidance space 31 is formed between the two circles of tooth groups 16, and the conveyor belt 9 is located in the avoidance space 31.

[0032] In this embodiment, the rotation drive mechanism 5 includes a first rotating shaft 17 rotatably connected to the lifting seat 3, a driving gear 18 sleeved on the first rotating shaft 17, and a first rotating driver 19 installed on the lifting seat 3 and used to drive the first rotating shaft 17 to rotate, and the driving gear 18 is meshed with the transmission gear 11; the conveying drive mechanism 4 includes a second rotating shaft 20 rotatably connected to the lifting seat 3, a transmission wheel 21 sleeved on the first rotating shaft 17, and a second rotating driver 22 installed on the lifting seat 3 and used to drive the second rotating shaft 20 to rotate, and the conveyor belt 9 is transmission-wound around the transmission wheel 21.

[0033] In actual application, the first rotary driver 19 drives the first rotating shaft 17 to rotate, the rotating first rotating shaft 17 drives the driving gear 18 to rotate, the rotating driving gear 18 is meshed with the transmission gear 11 to drive the transmission gear 11 to rotate, the rotating transmission gear 11 is meshed with the rack 10 to drive the rack 10 to move, and the moving rack 10 drives the translation plate 7 to move; the second rotary driver 22 drives the second rotating shaft 20 to rotate, the rotating second rotating shaft 20 drives the transmission wheel 21 to rotate, and the rotating transmission wheel 21 drives the conveyor belt 9 to rotate. In the process of the translation plate 7 moving, the conveyor belt 9, the transmission wheel 21 and the two slave pulleys 8 roughly form a fixed pulley structure, which is similar to the principle of the fixed pulley. Under the action of the two slave pulleys 8, the conveyor belt 9 will move accordingly.

[0034] Specifically, the first rotary driver 19 and the second rotary driver 22 have the same structure, and are both composed of a motor, a synchronous belt and a synchronous wheel.

[0035] In this embodiment, the number of translation conveying modules 1, the number of driving gears 18 and the number of transmission wheels 21 are all multiple, and the multiple translation conveying modules 1, the multiple driving gears 18 and the multiple transmission wheels 21 are respectively arranged one by one, and the multiple translation conveying modules 1 are arranged in parallel. The conveying drive mechanism 4 is used to drive the conveyor belts 9 of all translation conveying modules 1 to rotate, and the rotation drive mechanism 5 is used to drive the transmission gears 11 of all translation conveying modules 1 to rotate. In practical applications, according to the type and size of the material 30, one material 30 can be conveyed by one translation conveying module 1, or one material 30 can be conveyed by at least two translation conveying modules 1, which is diverse, flexible and convenient to use. One conveying drive mechanism 4 can drive the conveyor belts 9 of all translation conveying modules 1 to rotate synchronously, and one rotation drive mechanism 5 can drive the translation plates 7 of all translation conveying modules 1 to move, which greatly reduces the number of driving sources used, has a compact structure, and reduces the production and use costs.

[0036] In this embodiment, each translation conveying module 1 has two transmission gears 11, and the two transmission gears 11 are located on both sides of the driving gear 18. In actual application, one driving gear 18 drives the two transmission gears 11 to rotate synchronously, and the two transmission gears 11 are meshed with the rack 10 for transmission at the same time, which improves the stability of the meshing transmission on the one hand, and increases the supporting force of the transmission gear 11 on the translation plate 7 on the other hand.

[0037] In this embodiment, a guide belt support plate 23 is installed on the top surface of the translation plate 7, and a limit groove 24 is concavely provided on the top surface of the guide belt support plate 23, and the conveyor belt 9 is movably arranged in the limit groove 24. Specifically, there are multiple guide belt support plates 23, and multiple guide belt support plates 23 are arranged along the length direction of the translation plate 7 at intervals. In practical applications, the limit groove 24 plays a role of limiting the conveyor belt 9, and the guide belt support plate 23 plays a role of supporting the conveyor belt 9, thereby improving the strength of the conveyor belt 9 carrying the material 30, so that the conveyor belt 9 is not easily stretched and deformed.

[0038] Specifically, the limiting groove 24 is polished to reduce the friction resistance and wear of the conveyor belt 9 .

[0039] In this embodiment, the support seat 6 is rotatably connected with a tension guide pulley 25, which is used to resist the conveyor belt 9; there are two tension guide pulleys 25, which are respectively located on both sides above the transmission wheel 21. The tension guide pulley 25 positions and guides the conveyor belt 9, and applies a certain tension to the conveyor belt 9, thereby improving the working stability of the conveyor belt 9.

[0040] The present invention also provides a material collecting and unloading machine, including a second lifting drive mechanism 26, a loading frame 27 and the above-mentioned conveying device, the loading frame 27 is installed at the lifting end of the second lifting drive mechanism 26, the conveying device is located on one side of the loading frame 27, and the loading frame 27 is provided with a multi-layer loading structure from top to bottom, the loading structure includes a side slot 28 and a loading trough 29 connected to the top port of the side slot 28, the side slot 28 is used for the translation plate 7 of the translation conveying module 1 to be inserted into the loading frame 27, and one side slot 28 corresponds to the translation plate 7 of the translation conveying module 1.

[0041] The material receiving and unloading machine can realize receiving and unloading of the material 30. This embodiment is described by taking receiving of the material 30 as an example. In actual application, after the external roller conveying mechanism conveys the material 30 to the top of the conveying device, the first lifting drive mechanism 2 of the conveying device drives the translation conveying module 1 to rise and lift the material 30 on the external roller conveying mechanism, and then the translation of the translation plate 7 and the rotation of the conveyor belt 9 cooperate with each other, so that the translation plate 7 drives the conveyor belt 9 to insert into the loading frame 27 from the side slot 28, and convey the material 30 to the loading trough 29. After the material 30 is transported to the right place, the first lifting drive mechanism 2 drives the translation conveying module 1 to descend, so that the material 30 is placed in the loading trough 29 to realize the collection of the material 30. Finally, the rotation drive mechanism 5 drives the translation plate 7 to move out of the loading frame 27 from the side slot 28 and reset it to facilitate the collection of the next material 30. When the translation plate 7 moves out of the loading frame 27, the second lifting drive mechanism 26 drives the loading frame 27 to descend or rise one layer of the loading structure, so that the loading frame 27 is ready to receive the next material 30. When the loading frame 27 collects materials from top to bottom, the second lifting drive mechanism 26 drives the loading frame 27 to rise layer by layer from bottom to top; when the loading frame 27 collects materials from bottom to top, the second lifting drive mechanism 26 drives the loading frame 27 to descend layer by layer from top to bottom.

[0042] Preferably, the material 30 may be a board such as a circuit board.

[0043] Specifically, the first lifting drive mechanism 2 and the second lifting drive mechanism 26 can both be driven by a mechanism of a motor, a lead screw, a guide rail and a slider.

[0044] All technical features in this embodiment can be freely combined according to actual needs.

[0045] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A compact conveying device, characterized in that: The invention comprises a translation conveying module (1), a first lifting drive mechanism (2), a lifting seat (3) mounted on the lifting end of the first lifting drive mechanism (2), and a conveying drive mechanism (4) and a rotating drive mechanism (5) respectively arranged on the lifting seat (3); the translation conveying module (1) comprises a support seat (6) mounted on the lifting seat (3), a translation plate (7) cantilevered and translationally arranged on the support seat (6), two slave pulleys (8) respectively rotatably connected to the two ends of the translation plate (7), a conveying belt (9) transmission-mounted outside the two slave pulleys (8), a rack (10) arranged on the bottom surface of the translation plate (7), a transmission drive mechanism (4) and a transmission drive mechanism (5) respectively arranged on the lifting seat (3), and a transmission drive mechanism (5) respectively arranged on the lifting seat (3). A transmission gear (11) meshed with a rack (10), a support rod (12) mounted on a support seat (6), and a support rolling element (13) rotatably connected to the support rod (12); a conveying drive mechanism (4) is used to drive a conveyor belt (9) to rotate; a rotation drive mechanism (5) is used to drive the transmission gear (11) to rotate; a translation plate (7) is provided with a through hole (14) and a translation groove (15) connected to the through hole (14); the support rod (12) passes through the through hole (14); the support rolling element (13) rolls against the inner wall of the translation groove (15); and the extension direction of the through hole (14) and the translation groove (15) is parallel to the translation direction of the translation plate (7).

2. A compact conveying device according to claim 1, characterized in that: There are two translation grooves (15), which are located on both sides of the through hole (14); there are multiple support rods (12), which are arranged in a straight line; each support rod (12) is rotatably connected to two support rolling elements (13); and the two support rolling elements (13) on each support rod (12) are respectively arranged in the two translation grooves (15).

3. A compact conveying device according to claim 1, characterized in that: There are two racks (10), the conveyor belt (9) is located between the two racks (10), two circles of tooth groups (16) are arranged on the circumferential side of the transmission gear (11), the two circles of tooth groups (16) are respectively in transmission mesh with the two racks (10), an escape space (31) is formed between the two circles of tooth groups (16), and the conveyor belt (9) is located in the escape space (31).

4. A compact conveying device according to claim 1, characterized in that: The rotation drive mechanism (5) comprises a first rotating shaft (17) rotatably connected to the lifting seat (3), a driving gear (18) fitted on the first rotating shaft (17), and a first rotating driver (19) installed on the lifting seat (3) and used for driving the first rotating shaft (17) to rotate, and the driving gear (18) is meshed with the transmission gear (11); the conveying drive mechanism (4) comprises a second rotating shaft (20) rotatably connected to the lifting seat (3), a transmission wheel (21) fitted on the first rotating shaft (17), and a second rotating driver (22) installed on the lifting seat (3) and used for driving the second rotating shaft (20) to rotate, and the conveying belt (9) is transmission-wound outside the transmission wheel (21).

5. A compact conveying device according to claim 4, characterized in that: The number of translation conveying modules (1), the number of driving gears (18) and the number of transmission wheels (21) are all multiple; the multiple translation conveying modules (1), the multiple driving gears (18) and the multiple transmission wheels (21) are respectively arranged in one-to-one correspondence; the multiple translation conveying modules (1) are arranged in parallel; the conveying drive mechanism (4) is used to drive the conveying belts (9) of all the translation conveying modules (1) to rotate; and the rotation drive mechanism (5) is used to drive the transmission gears (11) of all the translation conveying modules (1) to rotate.

6. A compact conveying device according to claim 5, characterized in that: Each translation conveying module (1) has two transmission gears (11), and the two transmission gears (11) are located on both sides of the driving gear (18).

7. A compact conveying device according to claim 1, characterized in that: A guide belt support plate (23) is installed on the top surface of the translation plate (7), a limiting groove (24) is recessed on the top surface of the guide belt support plate (23), and the conveyor belt (9) is movably arranged in the limiting groove (24).

8. A compact conveying device according to claim 4, characterized in that: The support seat (6) is rotatably connected with a tensioning guide wheel (25), and the tensioning guide wheel (25) is used to contact the conveyor belt (9).

9. A compact conveying device according to claim 8, characterized in that: There are two tensioning guide pulleys (25), and the two tensioning guide pulleys (25) are respectively located on both sides above the driving wheel (21).

10. A material unwinding machine, characterized in that: It includes a second lifting drive mechanism (26), a loading frame (27) and a conveying device as described in any one of claims 1 to 9, the loading frame (27) is installed at the lifting end of the second lifting drive mechanism (26), the conveying device is located on one side of the loading frame (27), and the loading frame (27) is provided with a multi-layer loading structure from top to bottom, the loading structure includes a side slot (28) and a loading trough (29) connected to the top end of the side slot (28), and the side slot (28) is used for the translation plate (7) to be inserted into the loading frame (27).

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