Production system for the large-scale production of modified plastics

Abstract

The utility model discloses a kind of production systems of large-scale preparation modified plastics, belong to plastic production technical field. Including N batching devices and M granulating devices, batching device includes batching structure, first lifting feeding structure, mixing structure and second lifting feeding structure arranged in sequence, granulating device includes feed bin, extruder, cooling structure and pelletizing structure arranged in sequence;N batching devices are left and right arranged in batching workshop, M granulating devices are left and right arranged in granulating workshop, batching workshop and granulating workshop are equipped with feeding device between;Feeding device includes corridor, slide rail and N feeding trolley;The both ends of corridor are located in batching workshop and granulating workshop respectively to form batching section and granulating section respectively;N second lifting feeding structure is left and right arranged in front or rear of batching section;M feed bin is left and right arranged on granulating section;Feeding trolley can move to corresponding second lifting feeding structure and feed bin.

Description

Technical Field

[0001] This utility model belongs to the field of plastic production technology, and specifically relates to a production system for large-scale preparation of modified plastics. Background Technology

[0002] The preparation of modified plastics includes processes such as feeding, batching, mixing, extrusion, cooling, and pelleting. In existing technologies, the mixed materials need to be fed into different extruders as required.

[0003] For example, patent application number CN202021897431.X discloses a track-type automatic lifting and feeding device. The feeding device includes a feeding cart, a transmission support, a transmission device, a batching bin, and a load-bearing support. An operating platform is fixedly connected to the middle of the load-bearing support. The operating platform has a through hole for detachable connection to the batching bin. The transmission device includes an inclined lifting track and a horizontal transmission track. The bottom of the inclined lifting track is fixedly connected to the ground, and one side of the top of the inclined lifting track is fixedly connected to the load-bearing support. The horizontal transmission track is fixedly connected to the top of the load-bearing support. The top of the inclined lifting track is higher than the horizontal transmission track. A [missing information - likely a component or element] is connected to the outer side of the middle of the inclined lifting track. A fixed pulley is provided. A steering pulley perpendicular to the fixed pulley is connected to the top of the inclined ascending track. A transmission motor is located at the bottom of the fixed pulley. The transmission support includes a horizontal load-bearing track, a lifting frame parallel to the inclined ascending track, and an inclined rod connecting the load-bearing track and the end of the lifting frame. A steel cable is fixedly connected to the top of the lifting frame, and the steel cable is connected to the transmission motor via the steering pulley and the fixed pulley. The side of the lifting frame closest to the inclined ascending track is connected to the inner side of the inclined ascending track via a first roller. A feeding trolley is located at the bottom of the load-bearing track, and the bottom of the feeding trolley is connected to the load-bearing track via a second roller. A control cabinet for the linkage control feeding device is located at certain intervals on the ground. This device discloses the feeding and batching process. See also the description in application number CN202122299456.0.

[0004] For example, patent application number CN202020991535.0 discloses an automatic control device for a mixer, including a mixer, a main shaft, a first motor, a second motor, a stirring paddle, a feed inlet, a cylinder, a discharge outlet, a base, an electric telescopic rod, a third motor, a first control module, pulleys, a slide rail, a raw material elevator, a second control module, a raw material hopper, a finished product conveyor, a third control module, a finished product hopper, a bottom plate, a conveying plate, a lifting module, a rotating module, a support plate, a clamping block, an operation control cabinet, and a touch screen display; the mixer is equipped with a cylinder, which is connected to the second motor. The cylinder has an inlet and an outlet at its top and bottom, respectively. An internal main shaft is installed, with several equally spaced stirring paddles connected to a first motor. A base is located at the bottom of the mixer, housing a third motor, an electric telescopic rod, and a first control module. Pullers are mounted on slide rails at the bottom. Both the raw material elevator and the finished product conveyor are equipped with a base plate, a conveying plate, a lifting module, a rotating module, a support plate, and locking blocks. The raw material elevator has a second control module and a raw material hopper, and the finished product conveyor has a third control module and a finished product hopper. This device discloses the mixing process.

[0005] For example, patent application number CN201920594762.7 discloses a twin-screw extrusion air-cooled hot pelletizing device for producing flame-retardant masterbatch. It includes a metering feeder, a twin-screw extruder, an air-cooled hot pelletizer, a first cyclone separator, a second cyclone separator, and an air-cooled vibrating screen. The twin-screw extruder includes a base, a barrel, a drive motor, and a gearbox. The barrel is mounted on the base, with the gearbox connected to one end and the drive motor connected to the gearbox. The other end of the barrel is the extrusion port. A feeding port is located on the barrel near the drive motor. The metering feeder is positioned above the feeding port of the twin-screw extruder. The extrusion port of the twin-screw extruder is closely connected to the air-cooled hot pelletizer. The discharge port of the air-cooled hot pelletizer is connected to the first cyclone separator via a first conveying fan. The first cyclone separator is connected to the second cyclone separator via a second conveying fan. The discharge port of the second cyclone separator is connected to the air-cooled vibrating screen. This device discloses the pelletizing process.

[0006] Existing technologies require the mixed raw materials to be fed into a feed hopper. For example, patent application number CN201820825920.0 discloses an extruder auxiliary feeding mechanism, which includes a support spanning above multiple extruders arranged side by side. The support has a horizontal panel with multiple through holes, each of which is connected to a hopper located above each extruder. The mechanism also includes a feeding trolley, which includes a cubic frame, a funnel-shaped storage hopper fixed inside the cubic frame, and multiple casters located on the lower end of the cubic frame. The lower end of the storage hopper has an opening and closing mechanism for sealing the lower outlet of the storage hopper. The opening and closing mechanism includes a sealing plate hinged to the discharge port at the lower end of the storage bin and a connecting rope fixed to the sealing plate. A fixing ring is provided at the end of the connecting rope away from the sealing plate. The fixing ring is fixed to the handle by a pin inserted into the handle. The hinge end of the sealing plate is located away from the handle, and the connection end between the sealing plate and the connecting rope is located near the handle.

[0007] The aforementioned structure involves manually moving the feeding trolley to directly above the hopper on top of the extruder, and then manually opening and closing the mechanism to feed the material. This process has the following problems: 1. Time-consuming and laborious; 2. The operator is standing on a high support, which poses a safety hazard; 3. The space above the support frame may be too low, making it unsuitable for operators to walk on it; 4. If the entire system is connected in series, the system length will be large, requiring a long workshop. Utility Model Content

[0008] To address the aforementioned problems, this utility model provides a large-scale production system for modified plastics, characterized by high automation, improved efficiency, and reduced personnel requirements. Furthermore, the batching and granulation devices are located in two separate workshops, arranged along the width of the workshops, while the feeding device is positioned along the length of the workshops. This design optimizes the aspect ratio of the workshops, ensuring that the N batching devices and M granulation devices do not interfere with each other. The technical solution is as follows: This utility model embodiment provides a production system for large-scale preparation of modified plastics, including N batching devices and M granulation devices. Each batching device includes a batching structure 21, a first lifting and feeding structure 22, a mixing structure 23, and a second lifting and feeding structure 24 arranged sequentially. Each granulation device includes a feeding hopper 3, an extruder 4, a cooling structure, and a pelletizing structure arranged sequentially. The N batching devices are arranged side-by-side in a batching workshop, and the M granulation devices are arranged side-by-side in a granulation workshop. The batching workshop and the granulation workshop are arranged side-by-side with a feeding device between them. The feeding device includes a corridor 2 arranged in a left-right direction, a slide rail 5 arranged in a left-right direction on the corridor 2, and a component slidably mounted on the slide rail 5. N feeding trolleys 1 are arranged side by side, and each feeding trolley 1 can move left and right and has a valve plate 14 at its bottom that can open and close automatically; the corridor 2 is located above the extruder 4, and its two ends are located in the batching workshop and the granulation workshop respectively, forming the batching section and the granulation section; the partition wall between the batching workshop and the granulation workshop has a window for the feeding trolleys 1 to pass through; N second lifting and feeding structures 24 are arranged side by side in front of or behind the batching section, and the materials output by them can fall into the N feeding trolleys 1 respectively; M feeding bins 3 are arranged side by side on the granulation section and their tops are fixed on the corridor 2; the feeding trolleys 1 can move to the corresponding second lifting and feeding structure 24 and feeding bin 3.

[0009] Specifically, in this embodiment, the corridor 2 is located at the rear of the batching workshop and the pelleting workshop. The batching structure 21, the first lifting and feeding structure 22, the mixing structure 23, and the second lifting and feeding structure 24 are arranged sequentially from front to back. The feed hopper 3 is located directly above the feed inlet of the extruder 4. The extruder 4, the cooling structure, and the pelletizing structure are arranged sequentially from back to front. The second lifting and feeding structure 24 is located in front of the batching section.

[0010] Furthermore, in this embodiment, the front end of the corridor 2 is provided with a guardrail 8, which is arranged in the left and right direction and the distance between the guardrail 8 and the feeding trolley 1 is greater than 0.5m; the front end of the batching section away from the granulation workshop is provided with a step between it and the ground.

[0011] In this embodiment, the batching structure 21 includes a conveyor belt arranged in the front-to-back direction and a plurality of batching units arranged side by side above it. The rear end of the conveyor belt is located directly above the feeding end of the first lifting and feeding structure 22. The mixing structure 23 can move in the front-to-back direction and rotate. The first lifting and feeding structure 22 and the second lifting and feeding structure 24 are arranged obliquely upward from front to back. The discharge end of the second lifting and feeding structure 24 is located directly above the corresponding feeding trolley 1.

[0012] Furthermore, in this embodiment, a power supply beam 6 is provided at the rear of the corridor 2 and behind the feeding trolley 1, and a positioning sensor 7 is provided at the rear of the corridor 2 and at the second lifting and feeding structure 24 and the feeding bin 3. The power supply beam 6 is arranged in the left-right direction, and the positioning sensor 7 is located above the power supply beam 6. The feeding trolley 1 includes a car body, a movable power supply structure 19, a positioning trigger plate 15, a drive motor 16, and an opening and closing motor 17. The car body is slidably mounted on the slide rail 5. The movable power supply structure 19, the positioning trigger plate 15, and the drive motor 16 are all located at the rear of the car body. The positioning trigger plate 15 and the movable power supply structure 19 are located above and below the power supply beam 6, respectively. The positioning trigger plate 15 cooperates with the positioning sensor 7, and the movable power supply structure 19 cooperates with the power supply beam 6. The drive motor 16 is used to drive the car body to move left and right. The opening and closing motor 17 is located on the left or right side of the car body and is used to drive the valve plate 14 to move left and right.

[0013] In this embodiment, the vehicle body includes a movable frame 11, two wheel pairs 12 arranged side-by-side at the bottom of the movable frame 11, a storage bin 13 on the movable frame 11, a fixed plate 18 on the rear side of the movable frame 11, and a material feeding bracket 41 on the left or right side of the movable frame 11. The movable frame 11 is a frame structure arranged in the left-right direction; the storage bin 13 is a rectangular bin arranged in the left-right direction with a conical bottom; the two wheel pairs 12 are respectively located on the left and right sides of the movable frame 11 and are slidably mounted on the slide rail 5; the valve plate 14 is slidably mounted on the bottom of the storage bin 13, is arranged in the left-right direction, and can move in the left-right direction; the fixed plate 18 is located below the movable power-taking structure 19, the drive motor 16 is located on the lower side of the fixed plate 18 and is connected to one of the wheel pairs 12; the opening and closing motor 17 is located on the material feeding bracket 41 and is rotatably connected to the valve plate 14 through a drive component.

[0014] In this embodiment of the invention, the driving components include a lead screw 42, a pulley 43, and a belt 44. The lead screw 42 is arranged in a left-right direction and is located at one end of the valve plate 14 near the discharge bracket 41, and is rotatably connected to the end of the valve plate 14. The start-stop motor 17 is arranged in a left-right direction at the top of the discharge bracket 41 and is located directly above the lead screw 42. The pulley 43 is located at the lower part of the discharge bracket 41 and is rotatably located on the side of the discharge bracket 41 away from the storage bin 13, and is arranged in a left-right direction. The lead screw 42 is threadedly connected to the pulley 43, and the start-stop motor 17 is driven by the pulley 43 through the belt 44.

[0015] Specifically, in this embodiment of the present invention, the mobile power supply structure 19, the positioning trigger plate 15 and the fixing plate 18 are all located at the rear of the mobile frame 11 away from the granulation workshop and are all arranged in the front-back direction. The material feeding bracket 41 is located on the side of the mobile frame 11 close to the granulation workshop.

[0016] Furthermore, in this embodiment of the utility model, the rear of the corridor 2 is provided with an installation bracket; the power supply beam 6 includes N sets of sliding contact lines arranged side by side, each set of sliding contact lines includes multiple sliding contact lines arranged side by side, the sliding contact lines are arranged on the installation bracket in the left-right direction, the N sets of sliding contact lines provide power to N feeding trolleys 1 respectively, then the N mobile power taking structures 19 are respectively located below the adjacent N sets of sliding contact lines; the number of positioning sensors 7 is N+M and it includes N photoelectric sensors; the photoelectric sensors are arranged vertically downward, they are arranged on the installation bracket, and they are located above the sliding contact lines; the N photoelectric sensors are distributed in a stepped manner; the rear ends of the positioning trigger plates 15 of the N feeding trolleys 1 are respectively located directly below the N photoelectric sensors.

[0017] In this embodiment of the invention, N is an integer from 2 to 5, and M is an integer from 2 to 20.

[0018] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This utility model embodiment provides a production system for large-scale preparation of modified plastics, with a high degree of automation, requiring no manual intervention, and automatically realizing feeding, movement, discharge, and positioning. This improves efficiency and reduces personnel requirements. The batching device and granulation device are respectively located in two workshops and arranged along the width direction of the workshops, while the feeding device is arranged along the length direction of the workshops. The length-to-width ratio of the workshops is more suitable (not directly connected in series). The N batching devices and M granulation devices do not interfere with each other (a one-to-one arrangement is not required; a one-to-many arrangement is possible, and interference includes dust interference, temperature interference, and noise interference, etc.). Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the production system for large-scale preparation of modified plastics provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the batching device; Figure 3 This is a schematic diagram of the feeding device during material feeding; Figure 4 This is a schematic diagram of the feeding device during material discharge; Figure 5 This is a schematic diagram of the structure when the first feeding trolley is feeding material; Figure 6 This is a schematic diagram of the structure when the second feeding trolley is feeding material; Figure 7 This is a schematic diagram of the structure when the third feeding trolley is feeding material; Figure 8 This is a schematic diagram of the structure of the feeding trolley during material discharge; Figure 9 This is a schematic diagram of the combination of valve plate and start / stop motor.

[0020] In the diagram: 1. Feeding trolley, 2. Corridor, 3. Feeding hopper, 4. Extruder, 5. Slide rail, 6. Power supply beam, 7. Positioning sensor, 8. Guardrail; 11. Moving frame, 12. Wheel pair, 13. Storage bin, 14. Valve plate, 15. Positioning trigger plate, 16. Drive motor, 17. Opening and closing motor, 18. Fixed plate, 19. Moving power supply structure. 21 Ingredient feeding structure, 22 First lifting and feeding structure, 23 Mixing structure, 24 Second lifting and feeding structure; 41 Material feeding bracket, 42 lead screw, 43 pulley, 44 belt. Detailed Implementation

[0021] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0022] Example 1 See Figure 1-9 Example 1 provides a production system for large-scale preparation of modified plastics. The system includes a feeding device, N batching devices, and M granulation devices, where N is an integer from 2 to 5, and M is an integer from 2 to 20. The N batching devices (arranged along the front-to-back direction, specifically along the width of the workshop) are arranged side-by-side in the batching workshop, and the M granulation devices (arranged along the front-to-back direction, specifically along the width of the workshop) are arranged side-by-side in the granulation workshop. Specifically, the batching workshop and the granulation workshop can be formed by dividing a single workshop with a partition wall (arranged along the front-to-back direction). The batching workshop is smaller, and the granulation workshop is larger.

[0023] The feeding device is located between the batching workshop and the pelleting workshop. It is arranged in the left-right direction (specifically along the length of the workshop) and delivers the raw materials output by the batching device to the pelleting device. It is located at the front of the batching workshop and the pelleting workshop.

[0024] The batching device includes a batching structure 21, a first lifting and feeding structure 22, a mixing structure 23, and a second lifting and feeding structure 24 arranged sequentially, similar to existing technologies. The batching structure 21, the first lifting and feeding structure 22, the mixing structure 23, and the second lifting and feeding structure 24 are arranged sequentially from front to back. The batching structure 21 includes a conveyor belt arranged in a front-to-back direction and multiple batching units arranged side-by-side above it. The rear end of the conveyor belt is located directly above the feed end of the first lifting and feeding structure 22. The mixing structure 23 can move back and forth (from directly below the discharge end of the first lifting and feeding structure 22 to directly above the feed end of the second lifting and feeding structure 24) and rotate (during feeding, the opening of the barrel faces upward; during discharge, the opening of the barrel faces downward). The first lifting and feeding structure 22 and the second lifting and feeding structure 24 are arranged obliquely upward from front to back. The batching structure 21 can be found in the description of CN202122299456.0. The first lifting and feeding structure 22, the mixing structure 23, and the second lifting and feeding structure 24 can be found in the description of CN202020991535.0.

[0025] The pelletizing device includes a feed hopper 3, an extruder 4, a cooling structure, and a pelletizing structure arranged sequentially, similar to existing technologies. The feed hopper 3 is located directly above the feed inlet of the extruder 4, and its discharge outlet can be connected to the feed inlet of the extruder 4 via a screw metering structure. The extruder 4, cooling structure, and pelletizing structure are arranged sequentially from back to front. See the description in CN201920594762.7.

[0026] The feeding device includes a left-right corridor 2, a left-right sliding rail 5 on the corridor 2, and N feeding trolleys 1 slidably mounted on the sliding rail 5. The N feeding trolleys 1 are arranged side-by-side, and each feeding trolley 1 can move left-right and has an automatically opening and closing valve plate 14 at its bottom (to automatically release material after reaching its destination, specifically an electric valve). The corridor 2 is located above the extruder 4, with its two ends located in the batching workshop and granulation workshop, respectively forming the batching section and granulation section. The partition wall between the batching workshop and the granulation workshop has windows for the feeding trolleys 1 to pass through. N second lifting and feeding structures 24 are arranged side-by-side in front of the batching section, and the material output from them can fall into the N feeding trolleys 1 respectively (i.e., the discharge end of the second lifting and feeding structure 24 is located directly above the corresponding feeding trolley 1). M feeding bins 3 are arranged side-by-side on the granulation section, and their tops are fixed to the corridor 2. The feeding trolley 1 can move to the corresponding second lifting and feeding structure 24 or the feeding bin 3. When feeding, the feeding trolley 1 moves to the direct below the corresponding second lifting and feeding structure 24; when discharging, the feeding trolley 1 moves to the direct above the corresponding feeding bin 3.

[0027] Example 2 See Figure 3-8Example 2 provides a production system for large-scale preparation of modified plastics, the structure of which is basically the same as that of Example 1, except that: in this example, the front end of the corridor 2 is provided with a guardrail 8 (preferably with a height greater than 0.6m), the guardrail 8 is arranged in the left and right direction and the distance between it and the feeding trolley 1 is greater than 0.5m to facilitate walking. The front end of the batching section away from the granulation workshop is provided with steps (arranged diagonally upward from front to back) between the front end and the ground.

[0028] Example 3 See Figure 3-9 Example 3 provides a production system for large-scale preparation of modified plastics. Its structure is basically the same as that of Example 1, except that: in this example, a power supply beam 6 is provided at the rear of the corridor 2 and behind the feeding trolley 1 to reduce the wiring of the feeding trolley 1. Positioning sensors 7 are also provided at the rear of the corridor 2 and at the second lifting and feeding structure 24 and the feeding bin 3. The power supply beam 6 is used to supply power to the feeding trolley 1 and to control the feeding trolley 1 (in conjunction with the positioning sensors 7). The positioning sensors 7 are used to control the position of the feeding trolley 1. The power supply beam 6 is arranged in a left-right direction, and the positioning sensors 7 are located above the power supply beam 6.

[0029] The feeding trolley 1 includes a trolley body, a movable power supply structure 19, a positioning trigger plate 15, a drive motor 16, and an on / off motor 17. The trolley body slides on the slide rail 5. The movable power supply structure 19, the positioning trigger plate 15, and the drive motor 16 are all located on the rear side of the trolley body. The positioning trigger plate 15 and the movable power supply structure 19 are located above and below the power supply beam 6, respectively. The positioning trigger plate 15 cooperates with the positioning sensor 7 and is arranged along the front-rear direction. The movable power supply structure 19 cooperates with the power supply beam 6 and is also arranged along the front-rear direction. The drive motor 16 is used to drive the trolley body to move left and right. The on / off motor 17 is located on the left or right side of the trolley body and is used to drive the valve plate 14 to move left and right. The drive motor 16 and the on / off motor 17 are electrically connected to the movable power supply structure 19 to provide power. The positioning sensor 7 is used to control the power supply beam 6, and control is achieved by controlling the power supply. Of course, other methods can also be used. When the corresponding positioning sensor 7 is triggered, the feeding trolley 1 stops moving and feeds material (the lifting feeding structure 7 works) or discharges material (the opening and closing mechanism 14 works).

[0030] The vehicle body includes a movable frame 11, a storage bin 13, a fixed plate 18, and a discharge bracket 41. The movable frame 11 is a frame structure arranged in the left-right direction. The storage bin 13 is located on the movable frame 11 and is a rectangular bin arranged in the left-right direction with a conical bottom. Two wheel sets 12 are arranged side by side on the left and right sides of the movable frame 11, respectively; the wheel sets 12 are located at the bottom of the movable frame 11, arranged in the front-back direction, and slidably mounted on a slide rail 5. Correspondingly, the slide rail 5 includes two steel rails arranged side by side, with the feed bin 3 located between the two steel rails. A valve plate 14 is slidably mounted at the bottom of the storage bin 13, arranged in the left-right direction, and can move in the left-right direction. The fixed plate 18 is located on the rear side of the movable frame 11, below the movable power supply structure 19, and is arranged in the front-back direction. The discharge bracket 41 is located on the left or right side of the movable frame 11 and is specifically a rectangular frame. A drive motor 16 is located on the lower side of the fixed plate 18 and is connected to one of the wheelsets 12. An opening / closing motor 17 is located on the feeding bracket 41 and is rotatably connected to the valve plate 14 via a drive component. The drive component includes a lead screw 42, a pulley 43, and a belt 44. The lead screw 42 is positioned horizontally and located at the middle of one end (left or right) of the valve plate 14 near the feeding bracket 41, rotatably connected to the end of the valve plate 14 via a rotating seat. The opening / closing motor 17 is positioned horizontally and located at the top of the feeding bracket 41, directly above the lead screw 42. The pulley 43 is located at the lower part of the feeding bracket 41, rotatably positioned (via a bearing) on ​​the side of the feeding bracket 41 away from the storage hopper 13, and is coaxially arranged with the lead screw 42. The lead screw 42 is threadedly connected to the pulley 43, and the start / stop motor 17 (with a pulley on its drive shaft) is connected to the pulley 43 via the belt 44 (vertically set).

[0031] Example 4 Example 4 provides a production system for large-scale preparation of modified plastics. Its structure is basically the same as that of Example 3, except that: in this example, the movable power supply structure 19, the positioning trigger plate 15 and the fixed plate 18 are all located at the rear of the movable frame 11 away from the granulation workshop (left or right end), and the material feeding bracket 41 is located on the side of the movable frame 11 close to the granulation workshop (left or right side).

[0032] Example 5 Example 5 provides a production system for large-scale preparation of modified plastics, whose structure is basically the same as that of Example 3, except that the rear of the corridor 2 in this example is equipped with a mounting bracket. The power supply beam 6 includes N sets of sliding contact lines arranged side by side, each set of sliding contact lines including multiple sliding contact lines arranged side by side. The number of sliding contact lines is such that the drive motor 16 and the start / stop motor 17 can be controlled independently. The sliding contact lines are arranged on the mounting bracket in the left-right direction. The N sets of sliding contact lines supply power to N feeding trolleys 1 respectively, and the N moving power-taking structures 19 are located below the adjacent N sets of sliding contact lines. The number of positioning sensors 7 is N+M, and it includes N photoelectric sensors (the number of photoelectric sensors on the positioning sensors 7 in the batching section can be reduced, such as only one photoelectric sensor). The photoelectric sensors are arranged vertically downwards on the mounting bracket, above the sliding contact lines. The N photoelectric sensors are distributed in a stepped manner (increasing or decreasing steps in the left-right direction). Specifically, the N photoelectric sensors are arranged side by side vertically, and they move forward one by one from bottom to top. The rear end of the positioning trigger plate 15 of the N feeding trolleys 1 (the distance between the plate and the feeding trolley 1 changes) is located directly below the N photoelectric sensors.

[0033] Taking N=3 as an example, the positioning trigger plate 15 (corresponding to the photoelectric sensor located at the front) and the moving power supply structure 19 of the first feeding trolley 1 are located above and below the sliding contact line at the front, respectively. The positioning trigger plate 15 (corresponding to the photoelectric sensor located in the middle) and the moving power supply structure 19 of the second feeding trolley 1 are located above and below the sliding contact line in the middle, respectively. The positioning trigger plate 15 (corresponding to the photoelectric sensor located at the rear) and the moving power supply structure 19 of the third feeding trolley 1 are located above and below the sliding contact line at the rear, respectively.

[0034] Example 6 Example 6 provides a production system for large-scale preparation of modified plastics, the structure of which is basically the same as that of Example 1, except that: the system in this example is used to prepare optical cable jacket masterbatch, N is 3; the number of batching units is 7. The batching workshop is located on the left, the granulation workshop is located on the right, the movable power supply structure 19, the positioning trigger plate 15 and the fixing plate 18 are all located at the rear left end of the movable frame 11, and the material feeding bracket 41 is located on the right side of the movable frame 11.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A production system for large-scale preparation of modified plastics, comprising N batching devices and M pelletizing devices, wherein the batching devices include a batching structure (21), a first lifting and feeding structure (22), a mixing structure (23), and a second lifting and feeding structure (24) arranged sequentially, and the pelletizing devices include a feeding hopper (3), an extruder (4), a cooling structure, and a pelletizing structure arranged sequentially; characterized in that, N batching devices are arranged side by side in the batching workshop, and M granulation devices are arranged side by side in the granulation workshop. The batching workshop and the granulation workshop are arranged side by side and a feeding device is provided between them. The feeding device includes a corridor (2) arranged in the left-right direction, a slide rail (5) arranged in the left-right direction on the corridor (2), and N feeding trolleys (1) slidably arranged on the slide rail (5). The N feeding trolleys (1) are arranged side by side, and each feeding trolley (1) can move in the left-right direction and has a valve plate (14) at its bottom that can open and close automatically. The corridor (2) is located above the extruder (4), and its two ends are located in the batching workshop and the granulation workshop, respectively forming the batching section and the granulation section. Granulation section; the partition wall between the batching workshop and the granulation workshop is provided with a window for the feeding trolley (1) to pass through; N second lifting and feeding structures (24) are arranged side by side in front of or behind the batching section and the materials output by them can fall into the N feeding trolleys (1) respectively; M feeding bins (3) are arranged side by side on the granulation section and their tops are fixed on the corridor (2); the feeding trolley (1) can move to the corresponding second lifting and feeding structure (24) and feeding bin (3).

2. The production system for large-scale preparation of modified plastics according to claim 1, characterized in that, The corridor (2) is located at the rear of the batching workshop and the pelleting workshop. The batching structure (21), the first lifting and feeding structure (22), the mixing structure (23) and the second lifting and feeding structure (24) are arranged in sequence from front to back. The feed hopper (3) is located directly above the feed inlet of the extruder (4). The extruder (4), the cooling structure and the pelletizing structure are arranged in sequence from back to front. The second lifting and feeding structure (24) is located in front of the batching section.

3. The production system for large-scale preparation of modified plastics according to claim 2, characterized in that, The front end of the corridor (2) is provided with a guardrail (8), which is arranged in the left and right direction and the distance between it and the feeding trolley (1) is greater than 0.5m; the front end of the batching section away from the granulation workshop is provided with a step between it and the ground.

4. The production system for large-scale preparation of modified plastics according to claim 2, characterized in that, The batching structure (21) includes a conveyor belt arranged in the front-to-back direction and a plurality of batching units arranged side by side above it. The rear end of the conveyor belt is located directly above the feed end of the first lifting and feeding structure (22). The mixing structure (23) can move in the front-to-back direction and rotate. The first lifting and feeding structure (22) and the second lifting and feeding structure (24) are arranged obliquely upward from front to back. The discharge end of the second lifting and feeding structure (24) is located directly above the corresponding feeding trolley (1).

5. The production system for large-scale preparation of modified plastics according to claim 2, characterized in that, A power supply beam (6) is provided at the rear of the corridor (2) and behind the feeding trolley (1), and a positioning sensor (7) is provided at the rear of the corridor (2) and at the second lifting and feeding structure (24) and the feeding bin (3); the power supply beam (6) is arranged in the left and right direction, and the positioning sensor (7) is located above the power supply beam (6); The feeding trolley (1) includes a trolley body, a movable power supply structure (19), a positioning trigger plate (15), a drive motor (16), and an opening and closing motor (17). The trolley body is slidably mounted on a slide rail (5). The movable power supply structure (19), the positioning trigger plate (15), and the drive motor (16) are all located on the rear side of the trolley body. The positioning trigger plate (15) and the movable power supply structure (19) are located above and below the power supply beam (6), respectively. The positioning trigger plate (15) cooperates with the positioning sensor (7), and the movable power supply structure (19) cooperates with the power supply beam (6). The drive motor (16) is used to drive the trolley body to move left and right. The opening and closing motor (17) is located on the left or right side of the trolley body and is used to drive the valve plate (14) to move left and right.

6. The production system for large-scale preparation of modified plastics according to claim 5, characterized in that, The vehicle body includes a movable frame (11), two wheel sets (12) arranged side by side at the bottom of the movable frame (11), a storage bin (13) on the movable frame (11), a fixing plate (18) on the rear side of the movable frame (11), and a material feeding bracket (41) on the left or right side of the movable frame (11). The movable frame (11) is a frame structure arranged in the left-right direction; the storage bin (13) is a rectangular bin arranged in the left-right direction, and its bottom is a conical structure; the two wheel sets (12) are respectively located on the movable frame (11). The left and right sides of the frame (11) are slidably mounted on the slide rail (5); the valve plate (14) is slidably mounted on the bottom of the storage bin (13), and is arranged in the left and right direction, and can move in the left and right direction; the fixed plate (18) is located below the movable power supply structure (19), the drive motor (16) is located on the lower side of the fixed plate (18) and is connected to one of the wheelsets (12) in a transmission manner; the opening and closing motor (17) is located on the feeding bracket (41) and is rotatably connected to the valve plate (14) through the driving component.

7. The production system for large-scale preparation of modified plastics according to claim 6, characterized in that, The driving component includes a lead screw (42), a pulley (43), and a belt (44); the lead screw (42) is arranged in the left-right direction and is located at one end of the valve plate (14) near the discharge bracket (41), and is rotatably connected to the end of the valve plate (14); the start-stop motor (17) is arranged in the left-right direction at the top of the discharge bracket (41) and is located directly above the lead screw (42); the pulley (43) is located at the lower part of the discharge bracket (41) and is rotatably located on the side of the discharge bracket (41) away from the storage bin (13), and is arranged in the left-right direction; the lead screw (42) and the pulley (43) are threadedly connected, and the start-stop motor (17) is connected to the pulley (43) through the belt (44).

8. The production system for large-scale preparation of modified plastics according to claim 6, characterized in that, The movable power supply structure (19), the positioning trigger plate (15), and the fixing plate (18) are all located at the rear of the movable frame (11) away from the granulation workshop and are arranged in the front-back direction. The material feeding bracket (41) is located on the side of the movable frame (11) close to the granulation workshop.

9. The production system for large-scale preparation of modified plastics according to claim 5, characterized in that, The rear of the corridor (2) is provided with an installation bracket; the power supply beam (6) includes N sets of sliding contact lines arranged side by side, each set of sliding contact lines includes multiple sliding contact lines arranged side by side, the sliding contact lines are arranged on the installation bracket in the left and right direction, the N sets of sliding contact lines provide power to N feeding trolleys (1) respectively, and the N mobile power taking structures (19) are located below the adjacent N sets of sliding contact lines respectively; the number of positioning sensors (7) is N+M and includes N photoelectric sensors; the photoelectric sensors are arranged vertically downward, are arranged on the installation bracket, and are located above the sliding contact lines; the N photoelectric sensors are distributed in a stepped manner; the rear ends of the positioning trigger plates (15) of the N feeding trolleys (1) are located directly below the N photoelectric sensors respectively.

10. The production system for large-scale preparation of modified plastics according to claim 1, characterized in that, N is an integer from 2 to 5, and M is an integer from 2 to 20.

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