A control method and device for multi-layer injection of materials in an active buffer environment

Abstract

The present invention discloses a control method and device for multi-layer injection of materials in an active buffering environment, which belongs to the field of automated logistics transportation. The present invention is based on a multi-layer material injection device in an active buffering environment, wherein a material guide table is rotatably connected to the discharge end of a material injection component, and the bevel angle of the material guide table is matched with the bevel angle of an inclined conveying component. The present invention can actively absorb the kinetic energy of materials by setting a buffer device, and can also form a linkage control system with a conveying system and no longer occupy the working space of the conveying equipment, thereby effectively avoiding other materials on the conveying equipment. An active buffer component, a material injection component and an inclined conveying component are set to form a material conveying unit, and the operating parameters of the material conveying unit are determined by a PLC program algorithm to determine the injection window, injection timing, conveying speed, buffering frequency and related parameters, and are precisely controlled by a perfect control method, and the equipment efficiency is maximized by multi-layer stacking, while the material breakage rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automated logistics transportation, and in particular to a control method and device for multi-layer injection of materials in an active buffer environment. Background Art

[0002] In the logistics industry, injection units composed of active buffering equipment, injection equipment and inclined conveying equipment are often used. At present, the common usage and control mode of injection units of this type of combination is the single-layer material injection mode. The scenarios where it is used more frequently include airport arrival and departure buffers, logistics sorting and transportation, warehouse picking, etc. The current usage scenarios require increased production capacity due to limited space. The current dilemma can be solved through double-layer or multi-layer material injection modes. Active buffering can effectively reduce material damage during the injection process. In an active buffering environment, the realization of multi-layer material injection on inclined conveying equipment requires consideration of active buffering, injection windows, judgment conditions, material accumulation, interface coordination and other factors. The poor logic of related factors in the control often leads to equipment damage, material damage and even personal safety accidents.

[0003] The existing application document, 202211449430.2, is a buffer transition device and method for conveying materials to an inclined conveyor body. Although it can reduce the damage to the materials and the noise generated, the buffer device passively absorbs the kinetic energy of the materials, so the possibility of damage to the materials is not minimized, and it occupies the working space of the conveying equipment; at the same time, in the prior art, there is a lack of a guide conveying device between the injection platform and the inclined platform, and it cannot be matched with the cutting platform. Inconsistent angles may cause material jamming and other situations. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the buffer device in the prior art passively absorbs the kinetic energy of the material, so the possibility of damage to the material is not minimized, and the working space of the conveying equipment is occupied; at the same time, in the prior art, there is a lack of a guiding conveying device between the injection table and the inclined table, and it cannot be matched with the cutting table. The inconsistent angles may cause material jamming, etc., and a control method and equipment for multi-layer injection of materials in an active buffering environment are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A control method for multi-layer injection of materials in an active buffer environment comprises the following steps:

[0007] Step 1: Start the material injection component to transfer the material;

[0008] Step 2: Use the detection component to detect the material transmission, and when the inclined conveying component detects sufficient space, prepare to import;

[0009] Step 3: When the material injection component receives the material, the detection component detects whether the material meets the conditions for the injection of one layer of material. If not, the detection component detects whether the material meets the conditions for the injection of multiple layers. If the conditions for the injection of multiple layers are met, the material injection component injects the material, and the material injection is completed.

[0010] Step 4: If the multi-layer injection conditions are not met, return to the detection component and judge the process by returning the component;

[0011] Step 5: If the detection component meets the material injection conditions of one layer, the detection component detects whether the material size is greater than the minimum material size. If the conditions are not met, the active buffer component does not start, and the material injection component injects the material according to the process;

[0012] Step 6: If the material size detected by the detection component is larger than the minimum material size, the active buffer component extends and the material injection component injects the material at the same time;

[0013] Step 7: After the active buffer component is extended, the detection component detects whether there is a signal when it is pushed into place within the set time. If there is no signal, the equipment fault is reported and the system stops; if there is a signal, the active buffer component receives the material and the extended component is retracted along with the material;

[0014] Step 8: The detection component detects whether there is a signal when it is retracted into place. If there is no signal, the device fault is reported and the system stops. If there is a signal, the buffering action is completed and the next process is repeated.

[0015] The present invention also provides a technical solution:

[0016] A multi-layer material injection device based on an active buffer environment comprises a material guide table, which is rotatably connected to the discharge end of a material injection component, and the bevel angle of the material guide table is matched with the bevel angle of a bevel conveying component.

[0017] Preferably, the detection component includes a first detection module, a second detection module, a third detection module, a fourth detection module, a fifth detection module and a sixth detection module.

[0018] Preferably, the material injection assembly includes a first material conveyor belt and a first rotating shaft and a second rotating shaft that are transmission-connected to both ends of the first material conveyor belt, one end of the first rotating shaft is transmission-connected to a first motor, a support frame is provided below the first material conveyor belt, a first cylinder is fixedly mounted on one side of the support frame, a first safety baffle is provided on the rotating disk of the first cylinder, both ends of the first rotating shaft and the second rotating shaft are rotatably mounted in the support frame, and the third detection module is fixedly mounted on one side of the support frame.

[0019] Preferably, the inclined conveying assembly includes two sets of conveying shafts and a second material conveying belt drivingly connected between the two sets of conveying shafts, the first detection module and the second detection module are fixedly installed on one side of the second material conveying belt, and a support block is arranged under the second material conveying belt.

[0020] Furthermore, the first material conveyor belt and the second material conveyor belt are both provided with safety protection components, and the safety protection components include a third cylinder, and a second safety baffle is fixedly installed on the turntable of the third cylinder, and the installation position of the second safety baffle is arranged parallel to the conveying direction of the first material conveyor belt and the second material conveyor belt.

[0021] Furthermore, the material guide table includes a guide plate and a driving block on one side of the guide plate, an installation groove is opened in the guide plate, a floating roller is rotatably installed in the installation groove, the roller surface of the floating roller is 2-3mm higher than the upper surface of the guide plate, a transmission wheel is symmetrically installed on one side of the guide plate, the surface of the second rotating shaft is rotatably connected to the transmission wheel, a driving wheel is integrally formed on one side of the transmission wheel, the driving wheel and the driving block are connected by a spline structure, and one end of the second rotating shaft is connected to the second motor through a synchronous belt pulley.

[0022] Furthermore, a third rotating shaft is provided through the floating roller, and the third rotating shaft is rotatably connected to the guide plate. Positioning grooves are provided at both ends of the guide plate at positions where the third rotating shaft passes through, and weighing sensors are provided in the positioning grooves.

[0023] Preferably, the active buffer assembly comprises a positioning frame and a buffer plate elastically connected to one side of the positioning frame, and the fourth detection module and the fifth detection module are both fixedly mounted on one side of the positioning frame;

[0024] Among them, the buffer plate is arranged on one side of the second material conveyor belt and is arranged opposite to the conveying direction of the first material conveyor belt, a second cylinder is arranged on one side of the positioning frame, the output shaft end of the second cylinder is connected with a linkage plate, one side of the linkage plate is connected to one side of the buffer plate through a linkage rod, the linkage plate and the positioning frame are slidably connected, and the buffer plate is slidably connected to one side of the positioning frame through two sets of linkage rods.

[0025] Furthermore, a spring with a guide rod is connected between the buffer plate and the positioning frame, the sixth detection module is fixedly installed on one side of the positioning frame and located between the buffer plate and the positioning frame, and two groups of positioning rods are symmetrically arranged at the bottom of the positioning frame.

[0026] Compared with the prior art, the present invention provides a control method and device for multi-layer injection of materials in an active buffer environment, which has the following beneficial effects:

[0027] 1. The control method and device for multi-layer injection of materials in an active buffering environment can form a linkage control system with the conveying system and no longer occupy the working space of the conveying equipment, thereby effectively avoiding other materials on the conveying equipment by setting a buffer device to actively absorb the kinetic energy of the materials;

[0028] 2. The control method and equipment for multi-layer injection of materials in the active buffer environment, by setting an active buffer component, a material injection component and an inclined conveying component to form a material conveying unit, the operation parameters of the material conveying unit are determined by the PLC program algorithm to determine the injection window, injection timing, conveying speed, buffering frequency and related parameters, and precise control is performed by a perfect control method, and the equipment efficiency is maximized by multi-layer stacking, while reducing the material breakage rate;

[0029] 3. The control method and equipment for multi-layer injection of materials in the active buffering environment are provided by setting a material guide table between the first material conveyor belt and the second material conveyor belt. The material guide table is provided with a guide plate that can match a uniform angle according to the inclination angle of the second material conveyor belt, and weighing sensors are provided at both ends of the floating roller in the guide plate to detect the volume of the material, and cooperate with the external dimensions detected by the detection component to further collect the material data in the largest range. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A control system flow chart of a control method for multi-layer injection of materials in an active buffer environment proposed by the present invention;

[0031] Figure 2 A schematic diagram of the three-dimensional structure of a multi-layer material injection device in an active buffer environment proposed by the present invention;

[0032] Figure 3 It is a partial enlarged structural schematic diagram of the turning connection part of the material guide table of a multi-layer material injection device in an active buffer environment proposed by the present invention;

[0033] Figure 4 It is a schematic diagram of a partial cross-sectional three-dimensional structure of a material guide table of a multi-layer material injection device in an active buffer environment proposed by the present invention;

[0034] Figure 5 It is a schematic diagram of a partially cutaway three-dimensional structure of an active buffer component of a multi-layer material injection device in an active buffer environment proposed by the present invention;

[0035] Figure 6 This is a schematic diagram of the arrangement structure of active buffer components of a multi-layer material injection device in an active buffer environment proposed by the present invention.

[0036] In the figure: 1, the first material conveyor belt; 2, the second material conveyor belt; 3, the support frame; 4, the first cylinder; 5, the first safety baffle; 6, the first motor; 7, the first detection module; 8, the first rotating shaft; 9, the second detection module; 10, the third detection module; 11, the second safety baffle; 12, the third cylinder; 13, the guide plate; 14, the floating roller; 15, the synchronous pulley; 16, the second motor; 17, the driving block; 18, the driving wheel; 19, the second rotating shaft; 20, the transmission wheel; 21, the positioning frame; 22, the positioning rod; 23, the second cylinder; 24, the guide rod; 25, the linkage plate; 26, the fourth detection module; 27, the fifth detection module; 28, the spring; 29, the buffer plate; 30, the linkage rod; 31, the sixth detection module; 32, the conveying shaft; 33, the support block; 34, the third rotating shaft; 35, the positioning groove; 36, the weighing sensor; 37, the installation groove. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0039] Reference Figure 1 , a control method for multi-layer injection of materials in an active buffer environment, comprising the following steps:

[0040] Step 1: Start the material injection component to transfer the material;

[0041] Step 2: Use the detection component to detect the material transmission, and when the inclined conveying component detects sufficient space, prepare to import;

[0042] Step 3: When the material injection component receives the material, the detection component detects whether the material meets the conditions for the injection of one layer of material. If not, the detection component detects whether the material meets the conditions for the injection of multiple layers. If the conditions for the injection of multiple layers are met, the material injection component injects the material, and the material injection is completed.

[0043] Step 4: If the multi-layer injection conditions are not met, return to the detection component and judge the process by returning the component;

[0044] Step 5: If the detection component meets the material injection conditions of one layer, the detection component detects whether the material size is greater than the minimum material size. If the conditions are not met, the active buffer component does not start, and the material injection component injects the material according to the process;

[0045] Step 6: If the material size detected by the detection component is larger than the minimum material size, the active buffer component extends and the material injection component injects the material at the same time;

[0046] Step 7: After the active buffer component is extended, the detection component detects whether there is a signal when it is pushed into place within the set time. If there is no signal, the equipment fault is reported and the system stops; if there is a signal, the active buffer component receives the material and the extended component is retracted along with the material;

[0047] Step 8: The detection component detects whether there is a signal when it is retracted into place. If there is no signal, the device fault is reported and the system stops. If there is a signal, the buffering action is completed and the next process is repeated.

[0048] This control method includes four aspects: system algorithm, control system, detection system, and fault emergency system. Among them, the system algorithm is the basic support of the present invention, the control system and detection system are the implementation process of the present invention, and the fault emergency system is a safety guarantee. When the site and equipment are limited and the flow requirements are increased, this control method is used to maximize the equipment utilization rate, increase production capacity, and ensure that the injection unit is reliable and efficient.

[0049] Combination Figure 1 The control system flow chart of this control method achieves a series of processes such as system energy saving, buffer injection, regular injection, and fault shutdown by judging conditions.

[0050] Reference Figure 2-Figure 6 A multi-layer material injection device in an active buffer environment includes a material guide table, which is rotatably connected to the discharge end of a material injection component, and the bevel angle of the material guide table is matched with the bevel angle of the bevel conveying component.

[0051] In this embodiment, it includes a mechanism layout and a detection point layout, and the mechanism layout includes an active buffer component, a material guide table, a material injection component and an inclined conveying component.

[0052] The detection component includes a first detection module 7 , a second detection module 9 , a third detection module 10 , a fourth detection module 26 , a fifth detection module 27 and a sixth detection module 31 .

[0053] In this example, the detection point layout includes a first detection module 7, a second detection module 9, a third detection module 10, a fourth detection module 26, a fifth detection module 27 and a sixth detection module 31. The detection components composed of the first detection module 7, the second detection module 9, the third detection module 10, the fourth detection module 26, the fifth detection module 27 and the sixth detection module 31 are connected by PLC electrical signals. Combined with the system algorithm, accurate material positioning, condition judgment and information output of the entire system can be achieved.

[0054] The material injection assembly includes a first material conveyor belt 1 and a first rotating shaft 8 and a second rotating shaft 19 which are transmission-connected to both ends of the first material conveyor belt 1. One end of the first rotating shaft 8 is transmission-connected to a first motor 6. A support frame 3 is arranged below the first material conveyor belt 1. A first cylinder 4 is fixedly mounted on one side of the support frame 3. A first safety baffle 5 is arranged on the rotating disk of the first cylinder 4. Both ends of the first rotating shaft 8 and the second rotating shaft 19 are rotationally mounted in the support frame 3. A third detection module 10 is fixedly mounted on one side of the support frame 3.

[0055] The inclined conveying assembly includes two sets of conveying shafts 32 and a second material conveying belt 2 drivingly connected between the two sets of conveying shafts 32 . The first detection module 7 and the second detection module 9 are fixedly installed on one side of the second material conveying belt 2 . A support block 33 is arranged under the second material conveying belt 2 .

[0056] The first material conveyor belt 1 and the second material conveyor belt 2 are both provided with a safety protection component, the safety protection component includes a third cylinder 12, the third cylinder 12 is arranged as a rotating structure, a second safety baffle 11 is fixedly mounted on the turntable of the third cylinder 12, and the installation position of the second safety baffle 11 is arranged parallel to the conveying direction of the first material conveyor belt 1 and the second material conveyor belt 2.

[0057] In this embodiment, a safety protection component is provided. In the initial state, the two sets of second safety baffles 11 are arranged parallel to the conveying direction of the first material conveyor belt 1 or the second material conveyor belt 2. When the above control method fails, the third cylinder 12 is started to drive the second safety baffle 11 to be perpendicular to the conveying direction of the first material conveyor belt 1 and the second material conveyor belt 2 to prevent the first material conveyor belt 1 / the second material conveyor belt 2 from continuing to convey materials without being detected.

[0058] The material guide table includes a guide plate 13 and a driving block 17 on one side of the guide plate 13. A mounting groove 37 is opened in the guide plate 13. A floating roller 14 is rotatably installed in the mounting groove 37. The roller surface of the floating roller 14 is 2-3mm higher than the upper surface of the guide plate 13. A transmission wheel 20 is symmetrically installed on one side of the guide plate 13. The surface of the second rotating shaft 19 is rotatably connected to the transmission wheel 20. A driving wheel 18 is integrally formed on one side of the transmission wheel 20. The driving wheel 18 and the driving block 17 are connected by a spline structure. One end of the second rotating shaft 19 is connected to the second motor 16 through a synchronous belt pulley 15.

[0059] In this embodiment, the synchronous pulley 15 is driven by the second motor 16 to drive the transmission wheel 20 to rotate, and drive the guide plate 13 to rotate a certain angle to match the bevel angle of the second material conveyor belt 2 of the bevel conveying structure, ensuring that the material falls smoothly onto the second material conveyor belt 2 during the conveying process.

[0060] It should be noted that the roller surface of the floating roller 14 is 2-3 mm higher than the upper surface of the guide plate 13 , which can ensure normal material transportation and enable rotation operation when adjusting the inclination angle of the guide plate 13 .

[0061] A third rotating shaft 34 is provided through the floating roller 14 , and the third rotating shaft 34 is rotatably connected to the guide plate 13 . Positioning grooves 35 are provided at both ends of the guide plate 13 at the positions through which the third rotating shaft 34 passes, and a weighing sensor 36 is provided in the positioning groove 35 .

[0062] In this embodiment, a weighing sensor 36 is added in the guide plate 13. When material falls onto the surface of the floating roller 14, the weighing sensor 36 is triggered to collect the material's own weight data in time, and the material data is further collected in the maximum range in conjunction with the external dimensions detected by the detection component.

[0063] The active buffer assembly includes a positioning frame 21 and a buffer plate 29 elastically connected to one side of the positioning frame 21. The fourth detection module 26 and the fifth detection module 27 are both fixedly installed on one side of the positioning frame 21. The buffer plate 29 is arranged on one side of the second material conveyor belt 2 and is arranged opposite to the conveying direction of the first material conveyor belt 1. A second cylinder 23 is arranged on one side of the positioning frame 21. The output shaft end of the second cylinder 23 is connected to a linkage plate 25. One side of the linkage plate 25 is connected to one side of the buffer plate 29 through a linkage rod 30. The linkage plate 25 and the positioning frame 21 are slidably connected. The buffer plate 29 is slidably connected to one side of the positioning frame 21 through two groups of linkage rods 30. A spring 28 with a guide rod 24 is connected between the buffer plate 29 and the positioning frame 21. The sixth detection module 31 is fixedly installed on one side of the positioning frame 21 and is located between the buffer plate 29 and the positioning frame 21. Two groups of positioning rods 22 are symmetrically arranged at the bottom of the positioning frame 21.

[0064] In the above-mentioned active buffer component, the fifth detection module 27 detects whether there is a signal when it is pushed into place within the set time (that is, whether the signal released by the sixth detection module 31 is received, whether there is a collision between the material and the buffer plate 29). If there is no signal, the system will stop if there is a device failure. If there is a signal, the active buffer component will retract its extended parts with the material after receiving the material. The fourth detection module 26 detects whether there is a signal when it is retracted into place (that is, whether the signal released by the sixth detection module 31 is received, whether there is a collision between the material and the buffer plate 29). If there is no signal, the system will stop if there is a device failure. If there is a signal, the buffering action is completed and the next process is repeated.

[0065] It should be noted that the active buffer component can not only protect the material by utilizing the elastic buffer force generated by the spring 28 connection, but also detect the signal of whether the material is in place through the sixth detection module 31, thereby further controlling the second cylinder 23 to pull the buffer plate 29 back, or using the second cylinder 23 to drive the buffer plate 29 to reset.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A control method for multi-layer injection of materials in an active buffer environment, characterized in that: The steps include: Step 1: Start the material injection component to transfer the material; Step 2: Use the detection component to detect the material transmission, and when the inclined conveying component detects sufficient space, prepare to import; Step 3: When the material injection component receives the material, the detection component detects whether the material meets the conditions for the injection of one layer of material. If not, the detection component detects whether the material meets the conditions for the injection of multiple layers. If the conditions for the injection of multiple layers are met, the material injection component injects the material, and the material injection is completed. Step 4: If the multi-layer injection conditions are not met, return to the detection component and judge the process by returning the component; Step 5: If the detection component meets the material injection conditions of one layer, the detection component detects whether the material size is greater than the minimum material size. If the conditions are not met, the active buffer component does not start, and the material injection component injects the material according to the process; Step 6: If the material size detected by the detection component is larger than the minimum material size, the active buffer component extends and the material injection component injects the material at the same time; Step 7: After the active buffer component is extended, the detection component detects whether there is a signal when it is pushed into place within the set time. If there is no signal, the equipment fault is reported and the system stops; if there is a signal, the active buffer component receives the material and the extended component is retracted along with the material; Step 8: The detection component detects whether there is a signal when it is retracted into place. If there is no signal, the device fault is reported and the system stops. If there is a signal, the buffering action is completed and the next process is repeated.

2. The control method for multi-layer injection of materials in an active buffer environment according to claim 1, characterized in that: The detection assembly comprises a first detection module (7), a second detection module (9), a third detection module (10), a fourth detection module (26), a fifth detection module (27) and a sixth detection module (31); the third detection module (10) is arranged on one side of the material injection assembly, the first detection module (7) and the second detection module (9) are arranged on one side of the inclined plane conveying assembly, and the fourth detection module (26), the fifth detection module (27) and the sixth detection module (31) are all arranged on the active buffer assembly.

3. A multi-layer material injection device in an active buffer environment, according to any one of claims 1-2, a control method for multi-layer material injection in an active buffer environment, characterized in that: It comprises a material guide table, which is rotatably connected to the discharge end of the material injection component, and the bevel angle of the material guide table is matched with the bevel angle of the bevel conveying component.

4. The multi-layer material injection device in an active buffer environment according to claim 3, characterized in that: The material injection assembly comprises a first material conveyor belt (1) and a first rotating shaft (8) and a second rotating shaft (19) which are transmission-connected to both ends of the first material conveyor belt (1); one end of the first rotating shaft (8) is transmission-connected to a first motor (6); a support frame (3) is arranged below the first material conveyor belt (1); a first cylinder (4) is fixedly mounted on one side of the support frame (3); a first safety baffle (5) is arranged on a rotating disk of the first cylinder (4); and both ends of the first rotating shaft (8) and the second rotating shaft (19) are rotatably mounted in the support frame (3).

5. The multi-layer material injection device in an active buffer environment according to claim 4, characterized in that: The inclined conveying assembly comprises two groups of conveying shafts (32) and a second material conveying belt (2) drivingly connected between the two groups of conveying shafts (32), and a support block (33) is arranged below the second material conveying belt (2).

6. The multi-layer material injection device in an active buffer environment according to claim 5, characterized in that: A third cylinder (12) is fixedly mounted on one side of the second material conveyor belt (2), a second safety baffle (11) is fixedly mounted on the turntable of the third cylinder (12), the installation position of the first safety baffle (5) is arranged parallel to the conveying direction of the first material conveyor belt (1), and the installation position of the second safety baffle (11) is arranged parallel to the conveying direction of the second material conveyor belt (2).

7. The multi-layer material injection device in an active buffer environment according to claim 4, characterized in that: The material guide table comprises a guide plate (13) and a driving block (17) on one side of the guide plate (13); a mounting groove (37) is provided in the guide plate (13); a floating roller (14) is rotatably mounted in the mounting groove (37); a roller surface of the floating roller (14) is 2-3 mm higher than an upper surface of the guide plate (13); a transmission wheel (20) is symmetrically mounted on one side of the guide plate (13); the surface of the second rotating shaft (19) is rotatably connected to the transmission wheel (20); a driving wheel (18) is integrally formed on one side of the transmission wheel (20); the driving wheel (18) and the driving block (17) are connected via a spline structure; one end of the second rotating shaft (19) is transmission-connected to a second motor (16) via a synchronous pulley (15).

8. The multi-layer material injection device in an active buffer environment according to claim 7, characterized in that: A third rotating shaft (34) is provided through the floating roller (14), and the third rotating shaft (34) is rotatably connected to the guide plate (13). Positioning grooves (35) are provided at both ends of the guide plate (13) at positions through which the third rotating shaft (34) passes, and a weighing sensor (36) is provided in the positioning groove (35).

9. The multi-layer material injection device in an active buffer environment according to claim 3, characterized in that: The active buffer assembly comprises a positioning frame (21) and a buffer plate (29) elastically connected to one side of the positioning frame (21); The buffer plate (29) is arranged on one side of the second material conveyor belt (2) and is arranged opposite to the conveying direction of the first material conveyor belt (1); a second cylinder (23) is arranged on one side of the positioning frame (21); an output shaft end of the second cylinder (23) is connected to a linkage plate (25); one side of the linkage plate (25) is connected to one side of the buffer plate (29) via a linkage rod (30); the linkage plate (25) and the positioning frame (21) are slidably connected; and the buffer plate (29) is slidably connected to one side of the positioning frame (21) via two sets of linkage rods (30).

10. The multi-layer material injection device in an active buffer environment according to claim 9, characterized in that: A spring (28) with a guide rod (24) is connected between the buffer plate (29) and the positioning frame (21), and two groups of positioning rods (22) are symmetrically arranged at the bottom of the positioning frame (21).

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