A raw material preparation production line for PC film production

Abstract

A kind of raw material preparation production line for PC film production, including feeding device, mixing device, extruder and cooling water tank, feeding device includes gantry crane, discharging chute and turnover hopper, turnover hopper is rotatably installed at the side of discharging chute, and is located directly below gantry crane, ton bag fixing assembly is arranged on turnover hopper;The utility model has the advantages that: when feeding, ton bag is poured by turnover hopper, time and effort are saved, and the raw materials can be poured into discharging chute at a uniform speed, effectively preventing the raw materials from scattering;Raw materials are repeatedly circulated in mixing hopper and mixing barrel, which can quickly mix the raw materials evenly, and the protective filter screen shakes up and down during mixing process, which can effectively prevent the raw materials from blocking and ensure smooth discharging;Cooling water marks are removed twice by double-channel air knives, and water marks are removed more completely.

Description

Technical Field

[0001] This utility model relates to the technical field of PC film production equipment, specifically to a production line for preparing raw materials for PC film production. Background Technology

[0002] PC film production raw materials are made by mixing and plasticizing resin and various auxiliary materials, then pelletizing them, and finally melting and molding them in an extruder. The existing raw material preparation process has the following problems: During the feeding process, after the raw material ton bags are hoisted onto the hopper, the workers need to manually control the tilting of the ton bags, which is time-consuming and labor-intensive, and easily causes the raw materials to scatter outside the hopper; During the raw material mixing stage, because PC resin particles and PC recycled crushed materials are relatively light, they are prone to clogging in the mixing hopper, affecting the efficiency of feeding and mixing; During plasticizing and cooling, most of the water stains brought out from the water tank are removed by air knives, but the existing air knives only have one air outlet, and the water stain removal effect is not ideal. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a production line for preparing raw materials for PC film production.

[0004] This utility model includes a feeding device, a mixing device, an extruder, and a cooling water tank. The feeding device includes a gantry crane, a discharge chute, and a tipping hopper. The tipping hopper is rotatably installed on one side of the discharge chute and located directly below the gantry crane. A ton bag fixing component is provided on the tipping hopper. The mixing device includes a mixing barrel and a mixing hopper. The lower side wall of the mixing barrel is provided with a circulating mixing outlet pipe and a discharge pipe, respectively. The bottom of the mixing barrel is provided with a circulating feed pipe. The mixing hopper is installed on one side of the mixing barrel and is connected to the circulating feed pipe. The mixing hopper is provided with a protective filter screen that can be shaken up and down. The mixing barrel is provided with a spiral conveying blade coaxially. The top of the mixing barrel is provided with a drive motor to drive the spiral conveying blade to rotate. The mixing hopper is located below the discharge end of the feeding chute. The discharge pipe is connected to the feed inlet of the extruder via a conveyor. The cooling water tank includes a tank body and a dewatering assembly. Adjustable guide rollers are provided at both the front and rear ends of the tank body. A circulating drain pipe is provided at the feed end of the tank body, and a circulating water inlet pipe is provided at the discharge end of the tank body. The dewatering assembly is located above the discharge end of the tank body. The dewatering assembly includes a water receiving tank and a dewatering air knife. The water receiving tank is installed on the tank body via a support frame. The drain outlet of the water receiving tank is connected to the tank body. Guide support rollers are provided at both the front and rear ends of the water receiving tank. The dewatering air knife is located directly above the space between the two guide support rollers.

[0005] The bottom of the discharge chute is equipped with a chute support frame. The tipping hopper is rotatably mounted on the chute support frame via a pin. The chute support frame is equipped with a pneumatic slide that drives the tipping hopper to flip. The slider of the pneumatic slide is connected to the tipping hopper via a connecting rod.

[0006] The ton bag fixing assembly includes an adsorption plate and an air pump. The adsorption plate is installed inside the tipping hopper and has multiple sets of air holes at the bottom. The air pump is installed outside the tipping hopper and communicates with the multiple sets of air holes on the adsorption plate.

[0007] The adsorption plate is provided with an anti-slip rubber layer, and the anti-slip rubber layer has through holes corresponding to the air pores.

[0008] The protective filter screen is located between the circulating mixing outlet pipe and the circulating feed pipe. Both the circulating mixing outlet pipe and the discharge pipe are equipped with discharge valves.

[0009] One end of the protective filter screen is hinged to the mixing hopper by a pin, and the other end of the protective filter screen is linked to the screw conveyor blades by a drive rod.

[0010] One end of the mounting shaft of the spiral conveyor blade extends below the circulating feed pipe. The frame of the mixing tank is equipped with a drive shaft. The mounting shaft and the drive shaft are respectively equipped with matching transmission gears. The drive shaft is equipped with a drive cam that controls the reciprocating movement of the drive rod.

[0011] The adjustable guide roller is equipped with a suspension plate at both ends. The top end of the suspension plate is equipped with an L-shaped fixing plate that matches the side plate of the tank. The adjustable guide roller is movably inserted into the tank through the two suspension plates.

[0012] A limiting support plate is provided between the two suspension plates.

[0013] The water-removing air knife has a crescent-shaped structure with its opening facing downwards. Air outlets are provided on both sides of the opening of the crescent-shaped structure, and an air inlet pipe is provided in the middle of one end of the crescent-shaped structure.

[0014] The advantages of this utility model are: during feeding, the ton bag pours the raw material through the tipping hopper, saving time and effort, and can pour the raw material into the discharge chute at a uniform speed, effectively preventing the raw material from scattering; the raw material circulates repeatedly in the mixing hopper and mixing barrel, which can quickly mix the raw material evenly, and at the same time, the protective filter screen shakes up and down during the mixing process, which can effectively prevent the raw material from clogging and ensure smooth discharge; cooling and water stain removal are carried out twice by the dual-channel air knife, and the water stains are removed more thoroughly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the feeding device.

[0017] Figure 3 This is a schematic diagram of the hopper installation structure.

[0018] Figure 4 This is a schematic diagram of the structure of the tipping hopper in the material feeding state.

[0019] Figure 5 This is a schematic diagram of the tipping hopper structure.

[0020] Figure 6 This is a schematic diagram of the mixing device.

[0021] Figure 7 This is a schematic diagram of the protective filter drive mechanism.

[0022] Figure 8 This is a schematic diagram of the cooling water tank structure.

[0023] Figure 9 This is a schematic diagram of the adjustable guide roller structure.

[0024] Figure 10 This is a schematic diagram of the water removal component. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] As shown in the attached figure, this utility model includes a feeding device 1, a mixing device 2, an extruder 3, and a cooling water tank 4. Each raw material ton bag is poured into the mixing device 2 through the feeding device 1 for mixing. After mixing, it is plasticized and extruded in the extruder 3. After being cooled by the cooling water tank 4, it enters the pelletizer for granulation and is used as the raw material for PC film molding.

[0030] The feeding device 1 includes a gantry crane 6, a discharge chute 7 and a tipping hopper 8. The tipping hopper 8 is rotatably installed on one side of the discharge chute 7 and located directly below the gantry crane 6. The tipping hopper 8 is equipped with a ton bag fixing assembly 9. The gantry crane 6 is equipped with an electric hoist. The ton bag is lifted and transported laterally into the tipping hopper 8 by the electric hoist. The ton bag fixing component 9 fixes the ton bag. Then the tipping hopper 8 flips over and slowly pours the raw material in the ton bag into the discharge chute 7.

[0031] The mixing device 2 includes a mixing barrel 20 and a mixing hopper 21. The lower side wall of the mixing barrel 20 is provided with a circulating mixing outlet pipe 23 and a discharge pipe 24, respectively. The bottom of the mixing barrel 20 is provided with a circulating feed pipe 25. The mixing hopper 21 is installed on one side of the mixing barrel 20 and communicates with the circulating feed pipe 25. The mixing hopper 21 is provided with a protective filter screen 26 that can be shaken up and down. The mixing barrel 20 is provided with a spiral conveying blade 27 coaxially. The top of the mixing barrel 20 is provided with a drive motor 28 that drives the spiral conveying blade 27 to rotate. The mixing hopper 21 is located below the discharge end of the feeding chute 7. The discharge pipe 24 is connected to the feed inlet of the extruder 3 via the conveyor 22. The raw material enters the mixing hopper 21 through the feeding chute 7, and then enters the mixing barrel 20 through the mixing hopper 21. When the spiral conveyor blades 27 rotate, they convey the raw material entering the mixing barrel 20 upwards. During mixing, the circulating mixing discharge pipe 23 is in the open state, and the discharge pipe 24 is in the closed state. When the raw material is conveyed upwards in the mixing barrel 20, it will flow back from the circulating mixing discharge pipe 23 to the mixing hopper 21, and then enter the mixing barrel 20 together with the raw material in the mixing hopper 21. This cycle is repeated to mix the raw materials evenly. After mixing is completed, the circulating mixing discharge pipe 23 is closed, and the discharge pipe 24 is opened. The raw material is discharged from the discharge pipe 24 and conveyed to the extruder 3 via the conveyor 22 for plasticization.

[0032] The cooling water tank 4 includes a tank body 40 and a water removal assembly. Adjustable guide rollers 42 are provided at the front and rear ends of the tank body 40. A circulating drain pipe 43 is provided at the feed end of the tank body 40, and a circulating water inlet pipe 44 is provided at the discharge end of the tank body 40. The water removal assembly is located above the discharge end of the tank body 40. The water removal assembly includes a water receiving tank 45 and a water removal air knife 46. The water receiving tank 45 is installed on the tank body 40 by a support frame. The drain outlet of the water receiving tank 45 is connected to the inside of the tank body 40. Guide support rollers 47 are provided at the front and rear ends of the water receiving tank 45, and the water removal air knife 46 is located directly above the two guide support rollers 47.

[0033] The filamentous material extruded through extruder 3 enters the tank 40 for cooling and shaping. The filaments pass sequentially under the adjustable guide roller 42, which has annular positioning grooves on its surface. Each groove corresponds to one filament, ensuring even separation between filaments, preventing them from sticking together, and facilitating rapid heat removal. Water is filled into the tank 40, with the water level exceeding the adjustable guide roller 42. The tank 40 is connected to an external cooling water pool; water discharged from the circulating drain pipe 43 enters the cooling water pool, and then the circulating inlet pipe 44 pumps cooled water from the cooling water pool into the tank 40. The water flows from the discharge end to the feed end of the tank 40, thus carrying away heat from the raw material.

[0034] After cooling, the material enters the dewatering assembly. Two guide support rollers 47 on the water receiving tank 45 guide and support the material. The guide support rollers 47 are provided with annular positioning grooves corresponding to the adjustable guide rollers 42. The dewatering air knife 46 blows air downwards to blow the water stains attached to the material into the water receiving tank 45. The water in the water receiving tank 45 then flows back into the tank body 40.

[0035] Furthermore, the bottom of the discharge chute 7 is provided with a chute support frame, and the tipping hopper 8 is rotatably mounted on the chute support frame via a pin. The chute support frame is provided with a pneumatic slide table 10 that drives the tipping hopper 8 to flip. The slider of the pneumatic slide table 10 is connected to the tipping hopper 8 via a connecting rod 11.

[0036] The pneumatic slide 10 moves linearly, and the bottom end of the tipping hopper 8 is tilted up and down by the connecting rod 11, thereby tipping the ton bag.

[0037] Preferably, the ton bag fixing assembly 9 includes an adsorption plate 12 and an air pump 13. The adsorption plate 12 is installed inside the tipping hopper 8 and has multiple sets of air holes at the bottom. The air pump 13 is installed outside the tipping hopper 8 and communicates with the multiple sets of air holes of the adsorption plate 12.

[0038] After the ton bag is placed on the tipping hopper 8, the lower surface of the ton bag, which is attached to one side of the tipping hopper 8, is adsorbed by the air holes of the adsorption plate 12, preventing the ton bag from sliding into the discharge chute 7 during the tipping process.

[0039] Furthermore, the adsorption plate 12 is provided with an anti-slip rubber layer 14, and the anti-slip rubber layer 14 has through holes corresponding to the air vents. The anti-slip rubber layer 14 can further enhance the anti-slip effect.

[0040] Furthermore, the protective filter 26 is located between the circulating mixing outlet pipe 23 and the circulating feed pipe 25, and both the circulating mixing outlet pipe 23 and the discharge pipe 24 are equipped with discharge valves. The protective filter 26 serves to prevent large foreign objects from falling into the mixing tank 20, while simultaneously ensuring that the incoming raw materials are evenly fed into the mixing tank 20.

[0041] Furthermore, one end of the protective filter screen 26 is hinged to the mixing hopper 21 by a pin, and the other end of the protective filter screen 26 is linked to the spiral conveying blade 27 by the drive rod 31.

[0042] Specifically, one end of the mounting shaft of the spiral conveyor blade 27 extends below the circulating feed pipe 25, and the frame of the mixing tank 20 is equipped with a drive shaft. The mounting shaft and the drive shaft are respectively equipped with a transmission gear 34 that cooperates with each other. The drive shaft is equipped with a drive cam 35 that controls the drive rod 31 to move up and down reciprocally.

[0043] The drive cam 35 is provided with a cam groove, and the drive rod 31 is provided with a roller that cooperates with the cam groove. When the drive cam 35 rotates, it drives the drive rod 31 to move up and down, thereby causing one end of the protective filter screen 26 to swing up and down.

[0044] Furthermore, the adjustable guide roller 42 is provided with suspension plates 50 at both ends, and an L-shaped fixing plate 51 that cooperates with the side plate of the trough 40 is provided at the top end of the suspension plate 50. The adjustable guide roller 42 is movably inserted into the trough 40 through the two suspension plates 50. The L-shaped fixing plate 51 is directly fastened to the top of the side plate of the trough 40, making installation and disassembly convenient and quick.

[0045] Furthermore, a limiting support plate 52 is provided between the two suspension plates 50. The limiting support plate 52 is used to spread the two L-shaped fixing plates 51 to both sides, so as to fix them to the groove 40 and prevent them from loosening.

[0046] The limiting support plate 52 is an elastic metal plate. The inner side of the L-shaped fixing plate 51 is provided with a positioning groove that cooperates with the limiting support plate 52. The end of the limiting support plate 52 is located in the positioning groove. The length of the limiting support plate 52 is greater than the width of the groove 40. When in use, the limiting support plate 52 is bent so that both ends are located in the corresponding positioning grooves. The limiting support plate 52 is stretched to both sides by its own elasticity, and the L-shaped fixing plate 51 is tightened on the groove 40.

[0047] Preferably, the dewatering air knife 46 has a crescent-shaped structure with its opening facing downwards. Air outlets are located on both sides of the crescent-shaped opening, and an air inlet pipe 53 is located in the middle of one end of the crescent-shaped structure. The air inlet pipe 53 sends air into the dewatering air knife 46 via a high-pressure blower. The air is then split into two halves within the dewatering air knife 46 and blown out from the two air outlets, spraying the material as it passes through, thereby blowing off water stains. The material undergoes two spray cycles when passing through the dewatering air knife 46, effectively removing water stains.

Claims

1. A production line for preparing raw materials for PC film production, characterized in that... It includes a feeding device (1), a mixing device (2), an extruder (3) and a cooling water tank (4). The feeding device (1) includes a gantry crane (6), a discharge chute (7) and a tipping hopper (8). The tipping hopper (8) is rotatably installed on one side of the discharge chute (7) and located directly below the gantry crane (6). The tipping hopper (8) is equipped with a ton bag fixing assembly (9). The mixing device (2) includes a mixing barrel (20) and a mixing hopper (21). The lower side wall of the mixing barrel (20) is provided with a circulating mixing outlet pipe (23) and a discharge pipe (24). The bottom of the mixing barrel (20) is provided with a circulating feed pipe (25). The mixing hopper (21) is installed on one side of the mixing barrel (20) and is connected to the circulating feed pipe (25). The mixing hopper (21) is provided with a protective filter screen (26) that can be shaken up and down. The mixing barrel (20) is provided with a spiral conveying blade (27) coaxially. The top of the mixing barrel (20) is provided with a drive motor (28) that drives the spiral conveying blade (27) to rotate. The mixing hopper (21) is located below the discharge end of the feeding chute (7). The discharge pipe (24) is connected to the feed inlet of the extruder (3) through the conveyor (22). The cooling water tank (4) includes a tank body (40) and a dewatering component. Adjustable guide rollers (42) are provided at the front and rear ends of the tank body (40). A circulating drain pipe (43) is provided at the feed end of the tank body (40). A circulating water inlet pipe (44) is provided at the discharge end of the tank body (40). The dewatering component is located above the discharge end of the tank body (40). The dewatering component includes a water receiving tank (45) and a dewatering air knife (46). The water receiving tank (45) is installed on the tank body (40) through a support frame. The drain outlet of the water receiving tank (45) is connected to the inside of the tank body (40). Guide support rollers (47) are provided at the front and rear ends of the water receiving tank (45). The dewatering air knife (46) is located directly above the two guide support rollers (47).

2. The production line for preparing raw materials for PC film production according to claim 1, characterized in that... The bottom of the discharge chute (7) is provided with a chute support frame. The tipping hopper (8) is rotatably mounted on the chute support frame via a pin. The chute support frame is provided with a pneumatic slide (10) that drives the tipping hopper (8) to flip. The slider of the pneumatic slide (10) is connected to the tipping hopper (8) via a connecting rod (11).

3. The production line for preparing raw materials for PC film production according to claim 1, characterized in that... The ton bag fixing assembly (9) includes an adsorption plate (12) and an air pump (13). The adsorption plate (12) is installed inside the turning hopper (8) and has multiple sets of air holes at the bottom. The air pump (13) is installed outside the turning hopper (8) and communicates with the multiple sets of air holes of the adsorption plate (12).

4. The raw material preparation production line for PC film production according to claim 3, characterized in that The adsorption plate (12) is provided with an anti-slip rubber layer (14), and the anti-slip rubber layer (14) is provided with through holes corresponding to the air holes.

5. The production line for preparing raw materials for PC film production according to claim 1, characterized in that... The protective filter (26) is located between the circulating mixing outlet pipe (23) and the circulating feed pipe (25). Both the circulating mixing outlet pipe (23) and the discharge pipe (24) are equipped with discharge valves.

6. The raw material preparation production line for PC film production according to claim 1, characterized in that One end of the protective filter (26) is hinged to the mixing hopper (21) by a pin, and the other end of the protective filter (26) is linked to the spiral conveying blade (27) by a drive rod (31).

7. The raw material preparation production line for PC film production according to claim 6, characterized in that One end of the mounting shaft of the spiral conveyor blade (27) extends below the circulating feed pipe (25). The frame of the mixing tank (20) is equipped with a drive shaft. The mounting shaft and the drive shaft are respectively equipped with a transmission gear (34). The drive shaft is equipped with a drive cam (35) that controls the drive rod (31) to move up and down.

8. The raw material preparation production line for PC film production according to claim 1, characterized in that The adjustable guide roller (42) is provided with a suspension plate (50) at both ends. The top end of the suspension plate (50) is provided with an L-shaped fixing plate (51) that cooperates with the side plate of the trough (40). The adjustable guide roller (42) is movably inserted into the trough (40) through the two suspension plates (50).

9. The raw material preparation production line for PC film production according to claim 8, characterized in that A limiting support plate (52) is provided between the two suspension plates (50).

10. A production line for preparing raw materials for PC film production according to claim 1, characterized in that... The water-removing air knife (46) is a crescent-shaped structure with the opening facing downwards. Air outlets are provided on both sides of the opening of the crescent-shaped structure, and an air inlet pipe (53) is provided in the middle of one end of the crescent-shaped structure.

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