Double-layer feeding device and rubber feeding and discharging all-in-one machine

Abstract

The utility model discloses a double-layer feeding device and a rubber feeding and discharging all-in-one machine, and relates to the technical field of rubber product machining, the double-layer feeding device comprises two feeding mechanisms and a lifting driving mechanism, the feeding mechanisms are used for conveying rubber sheets, and the two feeding mechanisms are arranged in an up-down layered mode; the upper feeding mechanism and the lower feeding mechanism are fixedly connected with each other, and the lifting driving mechanism is used for driving the two feeding mechanisms to ascend and descend. Two rolls of same or different rubber sheets can be conveyed at the same time, diversified use requirements are met, the material preparation period can be prolonged, and the machining efficiency of rubber products can be improved.

Description

Technical Field

[0001] The present application relates to the field of rubber product processing technology, and in particular to a double-layer feeding device and a rubber loading and unloading integrated machine. Background Art

[0002] Common forming processes for rubber products include injection molding and vulcanization molding. The main processes for preparing rubber products by vulcanization molding include mixing, pressing sheets, cutting strips, and vulcanization.

[0003] In the modern preparation process of rubber products, automated processing equipment is often used for processing to achieve rapid batch processing of rubber products. A rubber loading and unloading integrated machine is a common device in the preparation process of rubber products, and its main function is to trim and cut strip the sheet-shaped rubber sheet and then transport it to the vulcanization equipment of the rubber product.

[0004] During the operation of the loading and unloading integrated machine, workers need to install the pressed raw rubber material roll at the feeding position. During the material preparation process of the loading and unloading integrated machine, it is necessary to stop the machine and wait. Frequent stopping of the loading and unloading integrated machine for material preparation affects the processing efficiency of rubber products. Utility Model Content

[0005] In order to reduce the situation where frequent material preparation of the rubber loading and unloading integrated machine affects the processing efficiency of rubber products, the present application provides a double-layer feeding device and a rubber loading and unloading integrated machine.

[0006] A double-layer feeding device provided by the present application adopts the following technical solution:

[0007] A double-layer feeding device includes a feeding mechanism and a lifting drive mechanism. The feeding mechanism is used for transporting rubber sheets. There are two feeding mechanisms, which are arranged in an upper and lower layer and are fixedly connected to each other. The lifting drive mechanism is used to drive the two feeding mechanisms to move up and down.

[0008] By adopting the above technical solution, when the double-layer feeding device is in use, one of the feeding mechanisms is used to transport rubber sheets to the cutting strip station of the rubber loading and unloading integrated machine, and the other feeding mechanism is in a standby state. When the rubber sheets on the feeding mechanism in the use state are exhausted, the two feeding mechanisms are driven to move by the lifting drive mechanism, so that the feeding mechanism in the standby state moves to a state where it can transport sheets to the cutting strip station. By using the lifting drive mechanism to switch the operating states of the two feeding mechanisms, workers can simultaneously prepare materials for the two feeding mechanisms, thereby extending the material preparation cycle and being beneficial to improving the processing efficiency.

[0009] In addition, the double-layer feeding device can convey two rolls of the same or different rubber materials at one time, meeting the requirement of simultaneously outputting large and small rubber strips or rubber strips of different colors, and realizing the diversified requirements for the size and color of rubber strips in a set of molds. Moreover, conveying two rolls of the same or different rubber materials at one time can also meet the working requirements of the vulcanization equipment for double-layer molds.

[0010] Optionally, it further includes a sliding guiding mechanism, which is used to connect the feeding mechanism to the frame of the rubber loading and unloading integrated machine.

[0011] By adopting the above technical solution, during the process of the lifting drive mechanism driving the two feeding mechanisms to move, the sliding guiding mechanism can play a guiding role in the movement of the two feeding mechanisms, making the movement of the feeding mechanisms relatively smooth.

[0012] Optionally, the feeding mechanism includes mounting side plates and a trimming component. There are two mounting side plates, which are arranged parallel and opposite to each other. The trimming component includes a first cutter roll, a second cutter roll and a cutter roll driving part. The first cutter roll and the second cutter roll are both rotatably installed between the two mounting side plates. The cutter roll driving part is used to drive the first cutter roll and the second cutter roll to rotate. The rotation direction of the first cutter roll is opposite to that of the second cutter roll. Two first cutting knives are sleeved on the first cutter roll, and two second cutting knives are sleeved on the second cutter roll. The two second cutting knives are respectively arranged corresponding to the two first cutting knives. The first cutting knife and the corresponding second cutting knife can jointly play a role in trimming the edge.

[0013] By adopting the above technical solution, during the process of the feeding mechanism conveying the rubber sheet, the two first cutting knives on the first cutter roll cooperate with the two second cutting knives on the second cutter roll to cut the sides of the rubber sheet, making the sides of the rubber sheet neat, thereby improving the quality of the rubber strip and making the width of the rubber sheet meet the requirements.

[0014] Optionally, the first cutting knife is provided with a first set screw, the first set screw abuts against the outer peripheral surface of the first cutter roll, the first cutter roll is provided with a first guiding groove, and the first cutting knife is provided with a first guiding block adapted to the first guiding groove; the second cutting knife is provided with a second set screw, the second set screw abuts against the outer peripheral surface of the second cutter roll, the second cutter roll is provided with a second guiding groove, and the second cutting knife is provided with a second guiding block adapted to the second guiding groove.

[0015] By adopting the above technical solution, the position of the first cutting knife on the first cutter roller can be adjusted by tightening or loosening the first set screw, and the position of the second cutting knife on the second cutter roller can be adjusted by tightening or loosening the second set screw, so that the distance between the two first cutting knives and the distance between the two second cutting knives can be adjusted to change the feeding width of the rubber sheet. The first guiding block on the first cutting knife cooperates with the first guiding groove on the first cutter roller, which can better transmit torque between the first cutting knife and the first cutter roller. The second guiding block on the second cutting knife cooperates with the second guiding groove on the second cutter roller, which can better transmit torque between the second cutting knife and the second cutter roller.

[0016] Optionally, the cutter roller driving member includes a cutter roller driving motor, the cutter roller driving motor is installed on one of the mounting side plates, a driving gear is provided on the output shaft of the cutter roller driving motor, driven gears are provided on both the first cutter roller and the second cutter roller, the driving gear meshes with one of the driven gears, and the two driven gears mesh with each other.

[0017] By adopting the above technical solution, the cutter roller driving motor drives the first cutter roller and the second cutter roller to rotate simultaneously through the driving gear and the driven gears. The rotation directions of the first cutter roller and the second cutter roller are opposite, so that the first cutting knife and the corresponding second cutting knife jointly cut the side edges of the rubber sheet.

[0018] Optionally, a power roller group is provided between the two mounting side plates. The power roller group includes a driving roller and a pressure roller, and a rotary transmission assembly is commonly connected to one end of the driving roller and one end of the first cutter roller.

[0019] By adopting the above technical solution, the driving roller and the pressure roller of the power roller group jointly roll and convey the rubber sheet. Since the driving roller is indirectly driven by the cutter roller driving motor through the rotary transmission assembly, the driving roller and the edge cutting assembly can be started and stopped synchronously.

[0020] Optionally, movable mounting plates are respectively provided at both ends of the pressure roller. The end of the pressure roller is rotatably connected to the movable mounting plate. The two movable mounting plates correspond to the two mounting side plates respectively. A first telescopic driving member is connected between the movable mounting plate and the corresponding mounting side plate, and the first telescopic driving member is used to drive the pressure roller to approach or move away from the driving roller.

[0021] By adopting the above technical solution, before preparing the feeding mechanism, the first telescopic driving member can be used to drive the pressure roller away from the driving roller, so as to facilitate placing the rubber sheet between the driving roller and the pressure roller.

[0022] Optionally, the feeding mechanism further includes a guiding roller set. The guiding roller set is located on the side of the power roller set away from the trimming assembly. The guiding roller set includes a positioning roller and a movable roller. The movable roller is closer to the power roller set than the positioning roller. Two ends of the positioning roller are respectively rotatably connected to the two mounting side plates; two ends of the movable roller are respectively rotatably connected to the two movable mounting plates.

[0023] In addition to being able to cooperate to move the rubber sheet forward, the two clamping assemblies can also cooperate to move the rubber sheet backward to cope with situations such as material jamming that require material withdrawal; by adopting the above technical solution, when the two clamping assemblies feed the rubber sheet forward or withdraw the material backward, the guiding roller set can limit the deformation of the rubber sheet and reduce the occurrence of arching of the rubber sheet, so that the rubber sheet is protected. The movable roller is installed between the two movable mounting plates, so that the movable roller can move with the pressing roller of the power roller set, and the movable roller is not likely to affect the preparation of the rubber sheet.

[0024] Optionally, the feeding mechanism further includes a clamping assembly. The clamping assembly is used to clamp the rubber sheet processed by the trimming assembly. The clamping assembly is divided into a movable clamping assembly and a fixed clamping assembly; the movable clamping assembly is farther from the trimming assembly than the fixed clamping assembly. The mounting side plate is provided with a translation driving member for driving the movable clamping assembly to approach or move away from the fixed clamping assembly; the clamping assembly includes a fixed clamping plate, a movable clamping plate and a second telescopic driving member. The fixed clamping plate is fixedly installed between the two mounting side plates, and the second telescopic driving member is used to drive the movable clamping plate to approach or move away from the fixed clamping plate.

[0025] By adopting the above technical solution, during the process of the feeding mechanism feeding the rubber sheet forward, first make the fixed clamping assembly in an open state, and at the same time the movable clamping assembly clamps the rubber sheet and moves it to the cutting station. When the feeding mechanism withdraws the rubber sheet backward, the fixed clamping assembly clamps the rubber sheet, and then the movable clamping assembly opens and retreats. The two clamping assemblies cooperate to move the rubber sheet back and forth continuously, so that the feeding mechanism can accurately convey the rubber sheet to ensure the dimensional accuracy of the rubber sheet.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] When the double-layer feeding device is in use, one of the feeding mechanisms is used to convey rubber sheets to the strip-cutting station of the rubber loading and unloading machine, and the other feeding mechanism is in a standby state. Workers can prepare materials for the two feeding mechanisms simultaneously, thereby extending the material preparation cycle and facilitating the improvement of processing efficiency. The double-layer feeding device can convey two rolls of the same or different rubber materials at one time, meeting the requirement of simultaneously outputting large and small rubber strips or rubber strips of different colors, and realizing the diversified requirements for the size and color of rubber strips in a set of molds. Moreover, conveying two rolls of the same or different rubber materials at one time can also meet the working requirements of the vulcanization equipment for double-layer molds.

[0028] The driving roller of the power roller group and the pressure roller jointly roll and convey the rubber sheet. Since the driving roller is indirectly driven by the cutter roller driving motor through the rotary transmission component, the driving roller and the edge-cutting component can start and stop synchronously.

[0029] The adopted material clamping component has a novel structure, and the rubber material is not prone to deviation and deformation.

[0030] This feeding device does not require belt conveyance, avoiding the errors and adjustment time caused by belt deformation and improving the conveying accuracy. Description of the Drawings

[0031] Figure 1 is the structural view of the double-layer feeding device of this embodiment.

[0032] Figure 2 is the schematic diagram of the feeding mechanism of this embodiment.

[0033] Figure 3 is the schematic diagram of another perspective of the feeding mechanism of this embodiment.

[0034] Figure 4 is the structural schematic diagram of the edge-cutting component of this embodiment.

[0035] Figure 5 is the structural schematic diagram of the rubber loading and unloading machine of this embodiment.

[0036] Description of the Reference Numerals:

[0037] 1. Feeding mechanism; 11. Installation side plate; 12. Guide roller group; 121. Positioning roller; 122. Movable roller; 13. Power roller group; 131. Driving roller; 132. Pressing roller; 133. Rotary transmission assembly; 134. Movable mounting plate; 135. First telescopic driving member; 14. Trimming assembly; 141. First cutter roller; 1411. First cutter; 1412. First guide groove; 1413. First guide block; 1414. First set screw; 142. Second cutter roller; 1421. Second cutter; 1422. Second guide groove; 1423. Second guide block; 1424. Second set screw; 143. Cutter roller driving member; 1431. Cutter roller driving motor; 1432. Driving gear; 1433. Driven gear; 15. Clamping assembly; 1501. Movable clamping assembly; 1502. Fixed clamping assembly; 151. Mounting frame; 152. Fixed clamping plate; 153. Movable clamping plate; 154. Second telescopic driving member; 16. Translation driving member; 161. Motor; 162. Belt transmission assembly; 1621. First pulley; 1622. Second pulley; 1623. Timing belt; 1624. Connecting member; 2. Lifting driving mechanism; 3. Sliding guiding mechanism; 31. Connecting plate; 32. Slide block; 33. Slide rail; 4. Frame. Detailed implementation mode

[0038] The following is a further detailed description of the present application in conjunction with the attached Figures 1-5 drawings.

[0039] An embodiment of the present application discloses a double-layer feeding device. Refer to Figure 1 , a double-layer feeding device includes a feeding mechanism 1, a lifting driving mechanism 2 and a sliding guiding mechanism 3. The feeding mechanism 1 is installed on the frame 4 of the rubber loading and unloading machine through the sliding guiding mechanism 3. The feeding mechanism 1 is used for conveying rubber sheets. There are two feeding mechanisms 1, which are arranged in upper and lower layers and are fixedly connected to each other. The lifting driving mechanism 2 is a linear module mechanism, and in another implementation mode, it can also be a hydraulic cylinder or a pneumatic cylinder. The lifting driving mechanism 2 is fixedly installed on the frame 4 of the rubber loading and unloading machine, and the lifting driving mechanism 2 is used to drive the two feeding mechanisms 1 to move up and down.

[0040] Refer to Figure 1 , Figure 2 and Figure 3, the feeding mechanism 1 includes mounting side plates 11, a guiding roller set 12, a driving roller set 13, a trimming assembly 14 and a clamping assembly 15. There are two mounting side plates 11, which are arranged parallel and opposite to each other. The mounting side plates 11 are formed by splicing and combining multiple plates with different thicknesses. There are four sliding guiding mechanisms 3, which are distributed at the four corners. The sliding guiding mechanism 3 includes a connecting plate 31. The connecting plate 31 is connected to the mounting side plates 11 of the upper and lower feeding mechanisms 1 at the same time. Two sliders 32 are fixedly arranged on the connecting plate 31. The two sliders 32 are jointly slidably connected to a slide rail 33, and the slide rail 33 is fixedly connected to the frame 4 of the rubber loading and unloading machine.

[0041] Referring to Figure 2 and Figure 3 , the trimming assembly 14 includes a first cutter roller 141, a second cutter roller 142 and a cutter roller driving member 143. The first cutter roller 141 and the second cutter roller 142 are both rotatably mounted between the two mounting side plates 11. The cutter roller driving member 143 includes a cutter roller driving motor 1431. The cutter roller driving motor 1431 is mounted on one of the mounting side plates 11. A driving gear 1432 is provided on the output shaft of the cutter roller driving motor 1431. Both the first cutter roller 141 and the second cutter roller 142 are provided with driven gears 1433. The driving gear 1432 meshes with one of the driven gears 1433, and the two driven gears 1433 mesh with each other. The cutter roller driving motor 1431 drives the first cutter roller 141 and the second cutter roller 142 to rotate through the driving gear 1432 and the driven gears 1433. The rotation direction of the first cutter roller 141 is opposite to that of the second cutter roller 142.

[0042] Two first cutting knives 1411 are sleeved on the first cutter roller 141. Two second cutting knives 1421 are sleeved on the second cutter roller 142. The two second cutting knives 1421 are respectively arranged corresponding to the two first cutting knives 1411. The first cutting knife 1411 and the corresponding second cutting knife 1421 can jointly play a role in trimming the edge.

[0043] Referring to Figure 4 , the first cutting knife 1411 is provided with a first set screw 1414. The first set screw 1414 abuts against the outer peripheral surface of the first cutter roller 141. The first cutter roller 141 is provided with a first guiding groove 1412. The first cutting knife 1411 is provided with a first guiding block 1413 adapted to the first guiding groove 1412; the second cutting knife 1421 is provided with a second set screw 1424. The second set screw 1424 abuts against the outer peripheral surface of the second cutter roller 142. The second cutter roller 142 is provided with a second guiding groove 1422. The second cutting knife 1421 is provided with a second guiding block 1423 adapted to the second guiding groove 1422.

[0044] By loosening or tightening the first set screw 1414, the position of the first cutting knife 1411 on the first cutter roller 141 can be adjusted. By loosening or tightening the second set screw 1424, the position of the second cutting knife 1421 on the second cutter roller 142 can be adjusted. Thus, the distance between the two first cutting knives 1411 and the distance between the two second cutting knives 1421 can be adjusted to change the feeding width of the rubber sheet.

[0045] Referring to Figure 2 and Figure 3 , the power roller group 13 includes a driving roller 131 and a pressure roller 132. One end of the driving roller 131 and one end of the first cutter roller 141 are commonly connected with a rotary transmission component 133. In this embodiment, the rotary transmission component 133 is a sprocket and chain transmission component. Both ends of the pressure roller 132 are respectively provided with movable mounting plates 134. The end of the pressure roller 132 is rotatably connected with the movable mounting plates 134. The two movable mounting plates 134 respectively correspond to the two mounting side plates 11. A first telescopic driving member 135 is connected between the movable mounting plate 134 and the corresponding mounting side plate 11. The first telescopic driving member 135 is a double-acting piston cylinder, and the first telescopic driving member 135 is used to drive the pressure roller 132 to approach or move away from the driving roller 131.

[0046] When the double-layer feeding device is in use, the cutter roller driving motor 1431 drives the power roller group 13 and the edge trimming component 14 at the same time, so that the power roller group 13 and the edge trimming component 14 start and stop synchronously. The power roller group 13 continuously transfers the rubber sheet to the edge trimming component 14, and the edge trimming component 14 continuously trims the two side edges of the rubber sheet.

[0047] The guiding roller group 12 is located on the side of the power roller group 13 away from the edge trimming component 14. The guiding roller group 12 includes a positioning roller 121 and a movable roller 122. Both ends of the positioning roller 121 are respectively rotatably connected with the two mounting side plates 11; both ends of the movable roller 122 are respectively rotatably connected with the two movable mounting plates 134.

[0048] In addition to being able to cooperate to transfer the rubber sheet forward, the two clamping components can also cooperate to transfer the rubber sheet in the reverse direction to cope with situations such as material jamming that require material withdrawal; by providing the guiding roller group 12, when the two clamping components transfer the rubber sheet forward or withdraw the material in the reverse direction, the guiding roller group 12 can limit the deformation of the rubber sheet and reduce the occurrence of the rubber sheet arching.

[0049] The clamping assembly 15 is used to clamp the rubber sheet processed by the trimming assembly 14. The clamping assembly 15 includes a mounting frame 151, which is installed between two side mounting plates. A fixed clamp plate 152, a movable clamp plate 153 and a second telescopic driving member 154 are provided on the inner side of the mounting frame 151. The fixed clamp plate 152 and the second telescopic driving member 154 are respectively fixedly connected to the mounting frame 151. The second telescopic driving member 154 is a cylinder. The second telescopic driving member 154 is used to drive the movable clamp plate 153 to move closer to or away from the fixed clamp plate 152.

[0050] The clamping assembly 15 is divided into a movable clamping assembly 1501 and a fixed clamping assembly 1502, wherein the fixed clamping assembly 1502 is fixed between two mounting side plates 11; the movable clamping assembly 1501 is relatively far away from the trimming assembly 14 with respect to the fixed clamping assembly 1502, and the mounting side plate 11 is provided with a translation driving member 16 for driving the movable clamping assembly 1501 to approach or move away from the fixed clamping assembly 1502, and the translation driving member 16 includes a motor 161 and two belt transmission assemblies 162, the motor 161 is a servo motor or a stepping motor, and the motor The machine 161 is fixedly mounted on one of the mounting side plates 11, and the two belt transmission assemblies 162 correspond to the two mounting side plates 11 respectively. The belt transmission assembly 162 includes a first pulley 1621, a second pulley 1622 and a synchronous belt 1623. The first pulley 1621 and the second pulley 1622 are respectively rotatably connected to the mounting side plates 11, and the output shaft of the motor 161 is coaxially fixedly connected to one of the first pulleys 1621; a connecting piece 1624 is connected between the synchronous belt 1623 and the mounting frame 151 of the movable clamping assembly 1501.

[0051] The belt drive assembly 162 in this embodiment can be replaced by a cylinder or a linear module.

[0052] During the process of conveying the rubber sheet by the feeding mechanism 1, the fixed clamping assembly is first opened, and at the same time, the movable clamping assembly clamps the rubber sheet and moves it to the strip cutting station. Then, the fixed clamping assembly clamps the rubber sheet, and then the movable clamping assembly opens and retreats. The two clamping assemblies cooperate to convey the rubber sheet back and forth continuously, so that the feeding mechanism 1 can accurately convey the rubber sheet to ensure the dimensional accuracy of the rubber sheet.

[0053] The implementation principle of a double-layer feeding device in an embodiment of the present application is as follows: When the double-layer feeding device is in use, one of the feeding mechanisms 1 is used to convey rubber sheets to the strip cutting station of the rubber loading and unloading machine, and the other feeding mechanism 1 is in a standby state. When the rubber sheets on the feeding mechanism 1 in the use state are exhausted, the lifting drive mechanism 2 is used to drive the two feeding mechanisms 1 to move, so that the feeding mechanism 1 in the standby state moves to a state where it can convey sheets to the strip cutting station. By using the lifting drive mechanism 2 to switch the operating states of the two feeding mechanisms 1, workers can prepare materials for the two feeding mechanisms 1 simultaneously, thereby extending the material preparation cycle and facilitating the improvement of processing efficiency.

[0054] This embodiment also discloses a double-layer feeding device including a frame 4 and the above-mentioned double-layer feeding device. The double-layer feeding device is slidably and guidingly connected to the frame 4 in a vertical sliding manner, and the lifting drive mechanism 2 of the double-layer feeding device is fixedly installed on the frame 4.

[0055] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A double-layer feeding device, characterized in that: The invention comprises a feeding mechanism (1) and a lifting drive mechanism (2), wherein the feeding mechanism (1) is used to convey rubber sheets, two feeding mechanisms (1) are provided and arranged in upper and lower layers, the upper and lower feeding mechanisms (1) are connected and fixed to each other, and the lifting drive mechanism (2) is used to drive the two feeding mechanisms (1) to move upward and downward.

2. A double-layer feeding device according to claim 1, characterized in that: It also comprises a sliding guide mechanism (3), wherein the sliding guide mechanism (3) is used to connect the feeding mechanism (1) to a frame (4) of the rubber loading and unloading integrated machine.

3. A double-layer feeding device according to claim 1, characterized in that: The feeding mechanism (1) comprises a mounting side plate (11) and a trimming assembly (14), wherein two mounting side plates (11) are provided and are arranged in parallel and opposite to each other; the trimming assembly (14) comprises a first knife roller (141), a second knife roller (142) and a knife roller driving component (143), wherein the first knife roller (141) and the second knife roller (142) are both rotatably mounted between the two mounting side plates (11), and the knife roller driving component (143) is used to drive the first knife roller (141) and the second knife roller (142) to rotate. The knife roller (142) rotates, and the rotation direction of the first knife roller (141) is opposite to the rotation direction of the second knife roller (142). The first knife roller (141) is provided with two first cutting knives (1411), and the second knife roller (142) is provided with two second cutting knives (1421). The two second cutting knives (1421) are respectively arranged corresponding to the two first cutting knives (1411). The first cutting knives (1411) and the corresponding second cutting knives (1421) can jointly play a role in cutting edges.

4. A double-layer feeding device according to claim 3, characterized in that: The first cutter (1411) is provided with a first fixing screw (1414), the first fixing screw (1414) abuts against the outer peripheral surface of the first knife roller (141), the first knife roller (141) is provided with a first guide groove (1412), and the first cutter (1411) is provided with a first guide block (1413) adapted to the first guide groove (1412); the second cutter (1421) is provided with a second fixing screw (1424), the second fixing screw (1424) abuts against the outer peripheral surface of the second knife roller (142), the second knife roller (142) is provided with a second guide groove (1422), and the second cutter (1421) is provided with a second guide block (1423) adapted to the second guide groove (1422).

5. A double-layer feeding device according to claim 3, characterized in that: The knife roller drive component (143) comprises a knife roller drive motor (1431), the knife roller drive motor (1431) is mounted on one of the mounting side plates (11), the output shaft of the knife roller drive motor (1431) is provided with a driving gear (1432), the first knife roller (141) and the second knife roller (142) are both provided with a driven gear (1433), the driving gear (1432) is meshed with one of the driven gears (1433), and the two driven gears (1433) are meshed with each other.

6. A double-layer feeding device according to claim 3, characterized in that: A power roller group (13) is provided between the two mounting side plates (11), the power roller group (13) comprising a driving roller (131) and a pressing roller (132), one end of the driving roller (131) and one end of the first knife roller (141) being jointly connected to a rotating transmission assembly (133).

7. A double-layer feeding device according to claim 6, characterized in that: Both ends of the pressing roller (132) are provided with movable mounting plates (134), respectively; the ends of the pressing roller (132) are rotatably connected to the movable mounting plates (134); the two movable mounting plates (134) correspond to two mounting side plates (11) respectively; a first telescopic driving member (135) is connected between the movable mounting plates (134) and the corresponding mounting side plates (11); the first telescopic driving member (135) is used to drive the pressing roller (132) to move closer to or away from the active roller (131).

8. A double-layer feeding device according to claim 7, characterized in that: The feeding mechanism (1) further comprises a guide roller group (12), wherein the guide roller group (12) is located on a side of the power roller group (13) away from the trimming assembly (14), and the guide roller group (12) comprises a positioning roller (121) and a movable roller (122), wherein the movable roller (122) is closer to the power roller group (13) relative to the positioning roller (121), and the two ends of the positioning roller (121) are respectively rotatably connected to the two mounting side plates (11); and the two ends of the movable roller (122) are respectively rotatably connected to the two movable mounting plates (134).

9. A double-layer feeding device according to claim 3, characterized in that: The feeding mechanism (1) further comprises a clamping assembly (15), wherein the clamping assembly (15) is used to clamp the rubber sheet processed by the trimming assembly (14), and the clamping assembly (15) is divided into a movable clamping assembly (1501) and a fixed clamping assembly (1502); the movable clamping assembly (1501) is away from the trimming assembly (14) relative to the fixed clamping assembly (1502), and the mounting side plate (11) is provided with a translation driving member (16) for driving the movable clamping assembly (1501) to approach or move away from the fixed clamping assembly (1502); the clamping assembly (15) comprises a fixed clamping plate (152), a movable clamping plate (153) and a second telescopic driving member (154), wherein the fixed clamping plate (152) is fixedly mounted between the two mounting side plates (11), and the second telescopic driving member (154) is used to drive the movable clamping plate (153) to approach or move away from the fixed clamping plate (152).

10. A rubber loading and unloading integrated machine, characterized in that: It comprises a frame (4) and a double-layer feeding device as described in any one of claims 1 to 9.

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