Cooling granulation device and production line for plastic master batches

Abstract

The utility model discloses a plastic master batch cooling granulation device and production line, comprising: a cooling assembly comprising a cooling box, a fixed traction mechanism and a movable traction mechanism, the fixed traction mechanism and the movable traction mechanism are alternately arranged along the advancing direction of a plastic wire belt, a fixed traction roller is rotatably connected to the inside of the cooling box, and a movable traction roller is rotatably connected to the outside of the cooling box; the movable traction mechanism comprises a lifting driving structure, a lifting frame and a movable traction roller, the top end of the motion trail of the movable traction roller is located above the cooling box, and the bottom end of the motion trail of the movable traction roller is located in the cooling box below the fixed traction roller; the drying assembly comprises a drying bearing mechanism and a hot air drying mechanism; the pelletizing assembly comprises a pelletizing driving mechanism, a pelletizing hob and a positioning roller; and the conveying assembly is used for driving the plastic wire belt. According to the utility model, the plastic wire belt can be immersed in the cooling box in a roundabout extending manner, so that the space utilization rate is effectively improved, manual direct intervention is replaced by a mechanical structure, and the working precision and the working efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic masterbatch granulation, in particular to a cooling granulation device and production line for plastic masterbatch. Background Art

[0002] Plastic, as a common industrial product, is widely used in different fields of people's work and life. The raw material for making plastic products is usually plastic masterbatch. Plastic masterbatch is composed of an excessive amount of chemical additives, carrier resin, dispersant, etc., and is processed into plastic masterbatch through a series of steps.

[0003] The production of plastic masterbatch mainly includes the following steps: mixing, extrusion, cooling, and pelletizing. After mixing the raw materials and extruding the plastic tape through an extruder, in the related art, the extruded plastic tape is usually immersed in a coolant for cooling and forming. The plastic tape is directly lifted at both ends to make the middle section hang down in the coolant. After cooling and forming, it is sent to a pelletizer for pelletizing. This cooling method requires a water tank with a sufficient length for cooling, resulting in a large occupied space for the device production line and high land cost. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a cooling granulation device and production line for plastic masterbatch, which has high space utilization rate, low land cost, and simple traction winding operation.

[0005] A cooling granulation device for plastic masterbatch according to an embodiment of the first aspect of the utility model includes:

[0006] A cooling component, including a cooling box, a fixed traction mechanism, and a moving traction mechanism. The cooling box stores a coolant for cooling and forming the plastic tape. There are multiple fixed traction mechanisms and moving traction mechanisms, which are alternately arranged along the advancing direction of the plastic tape. The fixed traction mechanism includes at least one fixed traction roller, which is rotatably connected to the inside of the cooling box. The moving traction mechanism includes a lifting drive structure, a lifting frame, and a moving traction roller. The moving traction roller is rotatably connected to the lifting frame, and the lifting frame is connected to the lifting drive structure. The lifting drive structure is arranged outside the cooling box and is used to drive the moving traction roller to lift. The top of the movement track of the moving traction roller is located above the cooling box, and the bottom of the movement track of the moving traction roller is located in the cooling box below the fixed traction roller. The moving traction roller and the fixed traction roller are parallel, and both the fixed traction roller and the moving traction roller are used for winding the plastic tape;

[0007] A drying component, including a drying support mechanism and a hot air drying mechanism. The drying support mechanism is used to support the plastic tape, and the hot air drying mechanism is located directly above the drying support mechanism and is used to dry the plastic tape on the drying support mechanism;

[0008] The pelletizing assembly includes a pelletizing driving mechanism, a pelletizing hob, and a positioning roller. The pelletizing hob is connected to the pelletizing driving mechanism. The pelletizing hob is arranged parallel to one side of the positioning roller. The pelletizing driving mechanism is used to drive the pelletizing hob to pelletize the plastic tape.

[0009] The conveying assembly is located between the drying assembly and the pelletizing assembly. The conveying assembly is used to drive the plastic tape to sequentially pass through the cooling assembly, the drying assembly, and the pelletizing assembly.

[0010] In this embodiment, the fixed traction roller is provided with n circular first limiting grooves, where n is an integer greater than 1. The first limiting grooves are used to limit the plastic tape. The moving traction roller is provided with n second limiting grooves, and the second limiting grooves are used to limit the plastic tape.

[0011] In this embodiment, the lifting driving structure includes a rotating shaft and two gears. The two gears are connected to the rotating shaft, and the rotating shaft is rotatably connected to the cooling box. The lifting frame includes two guide sleeves, two guide columns, and two racks. The two guide columns are respectively slidably connected in the two guide sleeves. The two ends of the moving traction roller are respectively rotatably connected to the two guide columns. The two racks are respectively connected to the tops of the two guide columns. The two racks are respectively meshed with the two gears, and the two racks are located on the same side of the rotating shaft.

[0012] In this embodiment, the hot air drying mechanism includes a hot air blower and an upper air duct. The inlet of the upper air duct is connected to the hot air outlet of the hot air blower, and the outlet of the upper air duct faces the top surface of the drying support mechanism.

[0013] In this embodiment, the drying support mechanism includes at least two mutually parallel support rollers. The hot air drying mechanism further includes a side air duct. The inlet of the side air duct is connected to the hot air outlet of the hot air blower. The side air duct is located on one side of the drying support mechanism, and the outlet of the side air duct is inclined from bottom to top towards the lower part of the drying support mechanism.

[0014] In this embodiment, the support roller is provided with a number of water drainage through holes, and the water drainage through holes are perpendicular to the support roller.

[0015] In this embodiment, the conveying assembly includes a driving motor and two driving rollers. The two driving rollers are parallel and adjacent to each other, and one of the driving rollers is connected to the driving motor.

[0016] A production line according to an embodiment of the second aspect of the present invention includes the cooling and pelletizing device for plastic masterbatch according to the embodiment of the first aspect above, and further includes an extruder. The extruder is located on one side of the cooling box, and the extruder is used to extrude a plastic tape.

[0017] The embodiments of the present invention at least have the following beneficial effects:

[0018] By means of a cooling box in cooperation with a fixed traction mechanism and a movable traction mechanism, before production and processing, the movable traction roller is located above the cooling box, and there is sufficient space between the movable traction roller and the fixed traction roller, which can facilitate the operator to place the semi-finished plastic wire belt to be processed on the fixed traction roller. The feeding operation of the plastic wire belt is convenient and fast. Through the lifting drive structure in cooperation with the lifting frame, the movable traction roller can be lowered to the lower side of the fixed traction roller, so that the plastic wire belt can be wound around the fixed traction roller and the movable traction roller respectively from the upper and lower sides, and the plastic wire belt can be immersed in the cooling box in a circuitous extension manner, thereby effectively improving the utilization rate of the internal space of the cooling box, effectively reducing the floor area of the device, and further saving the land cost; the step of the circuitous winding of the plastic wire belt is realized by driving and pressing the movable traction mechanism in cooperation with the fixed traction mechanism, which can effectively reduce the working difficulty of the operator. At the same time, the mechanical structure replaces the direct intervention of manual labor, which can not only effectively improve the working precision and working efficiency, but also effectively reduce the potential safety hazards; each movable traction mechanism is equipped with an independent lifting drive structure, which can complete flexible lifting actions, and can accurately and independently control the lifting actions of each movable traction mechanism according to actual needs, which can effectively reduce problems such as breakage or deformation caused by excessive traction force, and can effectively improve the continuity and stability of production and processing; the drying assembly is closely connected to the rear of the cooling assembly, and the dried plastic wire belt is cut and granulated by the granulation assembly, and the overall production and processing actions are coherent, and the production efficiency is high. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a three-dimensional structural schematic diagram of a cooling and granulating device for plastic masterbatch according to an embodiment of the present utility model;

[0021] Figure 2 is a three-dimensional structural schematic diagram of the cooling and granulating device for plastic masterbatch according to an embodiment of the present utility model from another perspective;

[0022] Figure 3 is a three-dimensional structural schematic diagram of the cooling and granulating device for plastic masterbatch according to an embodiment of the present utility model in another working state;

[0023] Figure 4 is a winding state schematic diagram of the plastic wire belt when it is cooled in the cooling assembly of the cooling and granulating device for plastic masterbatch according to an embodiment of the present utility model;

[0024] Figure 5 is a three-dimensional structural schematic diagram when the cooling and granulating device for plastic masterbatch according to an embodiment of the present utility model is applied;

[0025] Figure 6Schematic three-dimensional structure diagram of the production line according to an embodiment of the present utility model.

[0026] Reference numerals:

[0027] Cooling assembly 1000, cooling box 1100, fixed traction roller 1200, first limiting groove 1210, lifting drive structure 1300, rotating shaft 1310, gear 1320, lifting frame 1400, guide sleeve 1410, guide post 1420, rack 1430, moving traction roller 1500, second limiting groove 1510;

[0028] Drying assembly 2000, drying support mechanism 2100, support roller 2110, water drainage through holes 2111, hot air drying mechanism 2200, hot air blower 2210, upper air duct 2220, side air duct 2230;

[0029] Pelletizing assembly 3000, pelletizing drive mechanism 3100, pelletizing hob 3200, positioning roller 3300;

[0030] Conveying assembly 4000, driving motor 4100, driving roller 4200;

[0031] Extruder 5000. Detailed implementation manners

[0032] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, left, right, front, back, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, if the terms first and second are used for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0035] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0036] Plastic masterbatch, which is composed of an excessive amount of chemical additives, carrier resin, dispersant, etc., and is processed into plastic masterbatch through a series of steps. As a common industrial product, plastic is widely used in different fields of people's work and life. The raw material for making plastic products is usually plastic masterbatch. The production of plastic masterbatch mainly includes the following steps: mixing, extrusion, cooling, and pelletizing. After mixing the raw materials and extruding the plastic tape through an extruder, in related technologies, the extruded plastic tape is usually immersed in a coolant for cooling and forming. The plastic tape is directly pulled at both ends to make the middle section hang down in the coolant. After cooling and forming, it is sent to a pelletizer for pelletizing. This cooling method requires a water tank with a sufficiently large length for cooling, resulting in a large occupied space for the device production line and high land costs.

[0037] Currently, most of the plastic masterbatch cooling and pelletizing devices on the market adopt a single cooling method, such as natural cooling or simple water cooling. This cooling method often fails to quickly and evenly reduce the temperature of the plastic tape, resulting in unsatisfactory cooling effects. At the same time, traditional traction mechanisms mostly use fixed traction rollers, which are difficult to adapt to plastic tapes of different specifications and materials, easily causing unstable traction and affecting the continuity and stability of the production line. In addition, there are also problems of independent equipment and poor coordination in the drying and pelletizing links, making the entire production process inefficient. The traditional plastic masterbatch has problems such as low cooling efficiency, insufficient traction force, and insufficient drying, which not only increase production costs but also affect the market competitiveness of products. Therefore, developing an efficient and stable plastic masterbatch cooling and pelletizing device has become an urgent need in the industry.

[0038] The following refers to the attached Figure 1 to the attached Figure 6 to describe the plastic masterbatch cooling and pelletizing device and production line of the embodiments of the present invention, which have high space utilization rate, low land cost, and simple traction and winding operation.

[0039] To clearly show the structure of each part of this cooling and pelletizing device, the device frames in the attached Figure 1 to the attached Figure 4 , as well as the attached Figure 6 are not shown and drawn. The attached Figure 5 is a three-dimensional structure schematic diagram including the device frame during application.

[0040] Referring to Figures 1 to 6 , a plastic masterbatch cooling and pelletizing device according to an embodiment of the first aspect of the present invention includes a cooling component 1000, a drying component 2000, a conveying component 4000, and a pelletizing component 3000 arranged in sequence along the advancing direction of the plastic tape;

[0041] ​The cooling assembly 1000 includes a cooling tank 1100, a fixed traction mechanism, and a moving traction mechanism. The cooling tank 1100 stores a coolant for cooling and shaping the extruded semi-finished plastic tape. The coolant can be a liquid for cooling such as cold water. There are multiple fixed traction mechanisms and moving traction mechanisms. Each fixed traction mechanism and moving traction mechanism are alternately arranged along the advancing direction of the plastic tape. That is, along the advancing direction of the plastic tape, the mechanism adjacent to the fixed traction mechanism is the moving traction mechanism to achieve the corresponding traction effect. The fixed traction mechanism includes at least one fixed traction roller 1200. The fixed traction roller 1200 is perpendicular to the extending direction of the plastic tape. The fixed traction roller 1200 is rotatably connected inside the cooling tank 1100 and is immersed in the coolant in the cooling tank 1100. The moving traction mechanism includes a lifting drive structure 1300, a lifting frame 1400, and a moving traction roller 1500. The moving traction roller 1500 is rotatably connected to the lifting frame 1400. The lifting frame 1400 is connected to the lifting drive structure 1300. The lifting drive structure 1300 is provided outside the cooling tank 1100. The lifting drive structure 1300 can be connected to the cooling tank 1100 or to the device frame outside the cooling tank 1100. The lifting drive structure 1300 is used to drive the moving traction roller 1500 to lift through the lifting frame 1400 so that the moving traction roller 1500 can move above the cooling tank 1100 or into the coolant in the cooling tank 1100. The top of the lifting movement trajectory of the moving traction roller 1500 is above the cooling tank 1100. That is, when the moving traction roller 1500 moves to the highest point, it is above the liquid level of the coolant in the cooling tank 1100. At this time, the moving traction roller 1500 is also above the plane where the fixed traction roller 1200 is located. The bottom of the lifting movement trajectory of the moving traction roller 1500 is in the cooling tank 1100 below the fixed traction roller 1200. That is, the moving traction roller 1500 can be lifted above and below the fixed traction roller 1200. The moving traction roller 1500 can be driven to different height positions from the fixed traction roller 1200. The moving traction roller 1500 is perpendicular to the extending direction of the plastic tape. The moving traction roller 1500 and the fixed traction roller 1200 are parallel to each other. Both the fixed traction roller 1200 and the moving traction roller 1500 are used to wind the plastic tape from different directions. The plastic tape is wound below the moving traction roller 1500 and above the fixed traction roller 1200 respectively, so that the shape of the plastic tape advances in a zigzag shape up and down, which can effectively improve the utilization rate of the space inside the cooling tank 1100, effectively increase the effective cooling length of the cooling tank 1100 for the plastic tape, effectively reduce the floor space of the cooling tank 1100 on the premise of ensuring the cooling time of the plastic tape, and can effectively save land costs;

[0042] The drying assembly 2000 includes a drying support mechanism 2100 and a hot air drying mechanism 2200. The drying assembly 2000 is located outside one end of the cooling assembly 1000. The drying support mechanism 2100 is used to support the plastic tape. The hot air drying mechanism 2200 is located directly above the drying support mechanism 2100, and the hot air drying mechanism 2200 is used to dry the plastic tape on the drying support mechanism 2100;

[0043] The pelletizing assembly 3000 includes a pelletizing drive mechanism 3100, a pelletizing hob 3200, and a positioning roller 3300. The pelletizing assembly 3000 is located outside the end of the drying assembly 2000 away from the cooling assembly 1000. The pelletizing hob 3200 is connected to the pelletizing drive mechanism 3100. The pelletizing hob 3200 is arranged in parallel on one side of the positioning roller 3300. The plastic tape is threaded between the positioning roller 3300 and the pelletizing hob 3200. The pelletizing drive mechanism 3100 is used to drive the pelletizing hob 3200 to cooperate with the positioning roller 3300 to pelletize the plastic tape. Preferably, the pelletizing drive mechanism 3100 is a motor for driving the pelletizing hob 3200 to rotate;

[0044] The conveying assembly 4000 is located between the drying assembly 2000 and the pelletizing assembly 3000. The cooling assembly 1000 is located on the side of the drying assembly 2000 away from the pelletizing assembly 3000. The cooling assembly 1000, the drying assembly 2000, and the pelletizing assembly 3000 are arranged in sequence. The conveying assembly 4000 is used to drive the plastic tape to advance and pass through the cooling assembly 1000, the drying assembly 2000, and the pelletizing assembly 3000 in sequence.

[0045] The working process of the cooling and pelletizing device for plastic masterbatch of the present utility model is as follows:

[0046] In the preparation stage, each lifting drive structure 1300 drives the corresponding lifting frame 1400 to rise respectively, so that each moving traction roller 1500 rises above the cooling box 1100. The semi-finished plastic tape that has just been extruded and needs to be cooled is laid on each fixed traction roller 1200 and the drying support mechanism 2100. The plastic tape passes through the conveying assembly 4000 and is threaded between the pelletizing hob 3200 and the positioning roller 3300. At this time, all the moving traction rollers 1500 are located above the plastic tape and each fixed traction roller 1200;

[0047] During the cooling stage, the lifting drive structure 1300 is started one by one in the direction opposite to the advancement of the plastic ribbon, so that each moving traction roller 1500 descends one by one below the fixed traction roller 1200 in the direction opposite to the advancement of the plastic ribbon. By making each moving traction roller 1500 descend one by one at different time intervals, it is possible to achieve step-by-step pressing of the plastic ribbon in coordination with the input speed of the plastic ribbon, effectively avoiding the plastic ribbon from being broken due to excessive tension. At this time, the winding state of the plastic ribbon being cooled in the cooling assembly 1000 can be referred to Figure 4 as shown. The plastic ribbon is wound below and above each moving traction roller 1500, and this section of the plastic ribbon is immersed in the cooling tank 1100 for cooling. The specific driving actions can be realized through software program design for automatic control, or can also be realized manually;

[0048] During the drying stage, the conveying assembly 4000 drives the plastic ribbon to advance in the direction of successively reaching the cooling assembly 1000, the drying assembly 2000, and the granulating assembly 3000. The plastic ribbon that has completed cooling and shaping in the cooling tank 1100 is conveyed by the conveying assembly 4000 to the drying support mechanism 2100, and the hot air drying mechanism 2200 dries the plastic ribbon on the drying support mechanism 2100 to remove the moisture on the surface of the plastic ribbon;

[0049] During the granulating stage, the conveying assembly 4000 drives the dried plastic ribbon to reach between the granulating cutter 3200 and the positioning roller 3300. The granulating motor drives the granulating cutter 3200 to rotate, and the granulating cutter 3200 cooperates with the positioning roller 3300 to cut and granulate the plastic ribbon, thereby obtaining plastic masterbatch.

[0050] By means of the cooling box 1100 in cooperation with the fixed traction mechanism and the movable traction mechanism, before production and processing, the movable traction roller 1500 is located above the cooling box 1100, and there is sufficient space between the movable traction roller 1500 and the fixed traction roller 1200, which facilitates the operator to place the semi-finished plastic wire belt to be processed on the fixed traction roller 1200. The feeding operation of the plastic wire belt is convenient and fast, which can effectively improve the production efficiency. Through the lifting drive structure 1300 in cooperation with the lifting frame 1400, the movable traction roller 1500 can be lowered below the fixed traction roller 1200, so that the plastic wire belt can be wound around the fixed traction roller 1200 and the movable traction roller 1500 from the upper and lower sides respectively, and the plastic wire belt can be immersed in the cooling box 1100 in a circuitous extension manner, thereby effectively improving the utilization rate of the internal space of the cooling box 1100, effectively reducing the floor area of the device, and further saving the land cost. The cooling efficiency of this device is high and the cooling effect is uniform, which can effectively improve the production efficiency; the step of the circuitous winding of the plastic wire belt is realized by driving and pressing by the movable traction mechanism in cooperation with the fixed traction mechanism, which can effectively reduce the working difficulty of the operator. At the same time, the mechanical structure replaces the direct intervention of manual labor, which can not only effectively improve the working accuracy and working efficiency, but also effectively reduce the potential safety hazards. The structures in specific contact with the plastic wire belt are the rotatable fixed traction roller 1200 and movable traction roller 1500, which can effectively reduce the friction on the plastic wire belt, effectively maintain the shape of the plastic wire belt, thereby improving the accuracy of cooling and forming, and the forward movement of the plastic wire belt is smooth and reliable; each movable traction mechanism is equipped with an independent lifting drive structure 1300, which can complete flexible lifting actions, can accurately and independently control the lifting actions of each movable traction mechanism according to actual needs, can effectively reduce problems such as fracture or deformation caused by excessive traction force, and can effectively improve the continuity and stability of production and processing; the drying assembly 2000 is closely connected to the rear of the cooling assembly 1000, and the dried plastic wire belt is cut and granulated by the granulating assembly 3000, and dry plastic masterbatch can be obtained. The overall production and processing actions are coherent, the production efficiency is high, and the cutting and granulating processing with high consistency can be completed by the cutting hob 3200 in cooperation with the positioning roller 3300, and the processing efficiency is high.

[0051] It can be understood that there are two fixed traction rollers 1200 in each fixed traction mechanism, and the two fixed traction rollers 1200 are both rotatably connected in the cooling box 1100. There are two movable traction rollers 1500 in each movable traction mechanism, and the two movable traction rollers 1500 in the same movable traction mechanism are both rotatably connected to the same lifting frame 1400. By setting two fixed traction rollers 1200, the bending degree of the plastic wire belt can be effectively reduced. Similarly, by setting two movable traction rollers 1500, the bending degree of the plastic wire belt can be effectively reduced, the consistency of the wire diameters at various positions during the cooling and forming of the plastic wire belt can be effectively improved, and the cooling and forming effect can be effectively improved.

[0052] It can be understood that the surface of the fixed traction roller 1200 is provided with n circular first limiting grooves 1210. Preferably, the first limiting grooves 1210 are equidistantly arranged on the circumferential surface of the fixed traction roller 1200. n is an integer greater than 1, that is, n is an integer with a minimum of 2. The first limiting grooves 1210 are used to limit the plastic wire belt, that is, the plastic wire belt is received and clamped into the first limiting grooves 1210. The surface of the movable traction roller 1500 is provided with n second limiting grooves 1510. Preferably, the second limiting grooves 1510 are equidistantly arranged on the circumferential surface of the movable traction roller 1500. The second limiting grooves 1510 are used to limit the plastic wire belt. The positions of the second limiting grooves 1510 are arranged opposite to the positions of the first positioning grooves, which can effectively limit the straightness of the plastic wire belt in the forward direction, effectively avoid the plastic wire belt from deviating to both sides in the forward direction, thereby effectively controlling the distance between adjacent plastic wire belts, effectively avoiding problems such as adhesion of the plastic wire belts, effectively improving the cooling and forming effect of the plastic wire belts, and the n first limiting grooves 1210 and the n second limiting grooves 1510 can limit multiple plastic wire belts, and applying to the work of multiple wire belts can effectively improve the work efficiency.

[0053] It can be understood that the lifting drive structure 1300 includes a rotating shaft 1310 and two gears 1320. The two gears 1320 are coaxially and fixedly connected to the rotating shaft 1310. The rotating shaft 1310 is rotatably connected to the cooling box 1100, and the rotating shaft 1310 can also be rotatably connected to the device frame. The lifting frame 1400 includes two guide sleeves 1410, two guide columns 1420 and two racks 1430. The guide columns 1420 are erected. The two guide columns 1420 are respectively slidably connected in the two guide sleeves 1410. Each guide sleeve 1410 is fixedly connected to the device frame. The guide sleeve 1410 is used to limit the guide column 1420, so that the guide column 1420 can perform lifting and sliding under the limiting action of the guide sleeve 1410. The two ends of the movable traction roller 1500 are respectively rotatably connected to the two guide columns 1420. The two racks 1430 are respectively fixedly connected to the tops of the two guide columns 1420. The two racks 1430 are respectively meshed with the two gears 1320, and the two racks 1430 are located on the same side of the rotating shaft 1310, so that when the rotating shaft 1310 rotates, it can drive the two racks 1430 to rise or fall synchronously through the two gears 1320, thereby making the movable traction roller 1500 perform a stable lifting action through the cooperation of the two guide columns 1420 and the guide sleeves 1410.

[0054] It should be noted that the guide sleeve 1410 also matches the rack 1430, and the rack 1430 can also be connected to the guide sleeve 1410 in a lifting and sliding manner, which can effectively improve the space utilization rate and ensure the reliability of the lifting action of the moving traction roller 1500. One end of the rotating shaft 1310 can be provided with a handle, and by shaking the handle, the rotating shaft 1310 can be rotated to drive the gear 1320 to rotate. The handle can facilitate the operator to rotate the rotating shaft 1310. The rotating shaft 1310 can be positioned through a locking mechanism. The locking mechanism is set to include a positioning plate, a locking plate, a locking screw and a clamping plate. The positioning plate is fixedly connected to the cooling box 1100 or fixedly connected to the device frame. The locking screw is threadedly connected to the locking plate. The clamping plate and the locking plate are located on opposite sides of the rotating shaft 1310. The clamping plate is fixedly connected to the cooling box 1100 or fixedly connected to the device frame. The locking plate is fixedly connected to one end of the locking screw close to the rotating shaft 1310. By rotating the locking screw, the locking plate can be driven to move closer to or away from the clamping plate to cooperate with the clamping plate to clamp and position the rotating shaft 1310 or move away and release it. The locking mechanism can also be other structures that can achieve tight and loose locking and positioning.

[0055] It can be understood that in addition to being set as the above structure, the lifting drive structure 1300 and the lifting frame 1400 can also be set such that the lifting drive structure 1300 is a cylinder for driving the lifting, and the lifting frame 1400 is a bracket structure for connecting the cylinder and the moving traction roller 1500.

[0056] It can be understood that the hot air drying mechanism 2200 includes a hot air blower 2210 and an upper air duct 2220. The inlet of the upper air duct 2220 is connected to the hot air outlet of the hot air blower 2210, and the outlet of the upper air duct 2220 faces the top surface of the drying support mechanism 2100. The upper air duct 2220 is used to guide the hot air generated by the operation of the hot air blower 2210 above the drying support mechanism 2100 for drying the plastic wire belt supported on the drying support mechanism 2100.

[0057] It can be understood that the drying support mechanism 2100 includes at least two parallel support rollers 2110. There is a gap between two adjacent support rollers 2110. The support rollers 2110 are rotatably connected to the device frame. The hot air drying mechanism 2200 further includes side air ducts 2230. The inlet of the side air ducts 2230 is connected to the hot air outlet of the hot air blower 2210. Specifically, a diversion pipeline can be arranged at the hot air outlet of the hot air blower 2210 to connect the inlet of the upper air duct 2220 and the inlet of the side air duct 2230 at the same time. The side air ducts 2230 are located on one side of the drying support mechanism 2100. The outlet of the side air ducts 2230 is inclined upward from bottom to top towards the lower part of the drying support mechanism 2100. The side air ducts 2230 are used to divert the hot air generated by the operation of the hot air blower 2210 to the lower part of the drying support mechanism 2100, for drying the lower surface of the plastic wire belt supported on each support roller 2110, which can effectively improve the drying efficiency. There are two side air ducts 2230, and the two side air ducts 2230 are symmetrically arranged on the opposite sides of the drying support mechanism 2100. In addition, in addition to setting one hot air blower 2210 and connecting the inlet of the upper air duct 2220 and the inlet of the side air duct 2230 at the same time, multiple hot air blowers 2210 can also be set, and each hot air blower 2210 is respectively connected to the inlet of the upper air duct 2220 and the inlet of the side air duct 2230.

[0058] Moreover, the outlet of the side air duct 2230 is set to be inclined upward, and the side air duct 2230 is located on one side of the drying support mechanism 2100, which can effectively reduce the water droplets blown off the plastic wire belt from dripping onto the inlet of the side air duct 2230 and affecting the service life of the side air duct 2230. During operation, there is always a plastic wire belt above the support roller 2110. The support roller 2110 can also be dried from below through the side air duct 2230, which can effectively improve the dryness of the support roller 2110 and further improve the drying performance of the overall structure of the drying assembly 2000.

[0059] It can be understood that the support roller 2110 is provided with a number of water drainage through holes 2111. The water drainage through holes 2111 are perpendicular to the support roller 2110, that is, the opposite ends of the water drainage through holes 2111 respectively penetrate the opposite side surfaces of the support roller 2110. During the rotation process, the water drainage holes can effectively divert and drain the water from the middle, which can effectively reduce the water residue on the surface of the support roller 2110 and effectively improve the drying efficiency.

[0060] It can be understood that the conveying assembly 4000 includes a driving motor 4100 and two driving rollers 4200. The two driving rollers 4200 are parallel and adjacent. The plastic wire belt is clamped between the two driving rollers 4200. One of the driving rollers 4200 is connected to the output shaft of the driving motor 4100. The driving motor 4100 is used to drive the connected driving roller 4200 to rotate, so as to cooperate with the other driving roller 4200 to convey the plastic wire belt forward. Both driving rollers 4200 are rotatably connected to the device frame.

[0061] Reference Figure 6 As shown, a production line according to an embodiment of the second aspect of the present utility model includes the cooling granulation device for plastic masterbatch according to the embodiment of the first aspect, and further includes an extruder 5000. The extruder 5000 is located on the side of the cooling box 1100 away from the drying assembly 2000, and the extruder 5000 is used to extrude plastic wire belts.

[0062] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A cooling granulation device for plastic masterbatch, characterized in that, Comprising: A cooling assembly (1000), including a cooling tank (1100), a fixed traction mechanism and a moving traction mechanism. The cooling tank (1100) stores a coolant for cooling and shaping the plastic tape. There are multiple fixed traction mechanisms and multiple moving traction mechanisms. The fixed traction mechanisms and the moving traction mechanisms are arranged alternately along the advancing direction of the plastic tape. The fixed traction mechanism includes at least one fixed traction roller (1200), and the fixed traction roller (1200) is rotatably connected inside the cooling tank (1100). The moving traction mechanism includes a lifting drive structure (1300), a lifting frame (1400) and a moving traction roller (1500). The moving traction roller (1500) is rotatably connected to the lifting frame (1400), and the lifting frame (1400) is connected to the lifting drive structure (1300). The lifting drive structure (1300) is arranged outside the cooling tank (1100), and the lifting drive structure (1300) is used to drive the moving traction roller (1500) to lift. The top of the movement trajectory of the moving traction roller (1500) is located above the cooling tank (1100), and the bottom of the movement trajectory of the moving traction roller (1500) is located in the cooling tank (1100) below the fixed traction roller (1200). The moving traction roller (1500) and the fixed traction roller (1200) are parallel, and both the fixed traction roller (1200) and the moving traction roller (1500) are used for winding the plastic tape; A drying assembly (2000), including a drying support mechanism (2100) and a hot air drying mechanism (2200). The drying support mechanism (2100) is used to support the plastic tape, and the hot air drying mechanism (2200) is located directly above the drying support mechanism (2100). The hot air drying mechanism (2200) is used to dry the plastic tape on the drying support mechanism (2100); A granulating assembly (3000), including a granulating drive mechanism (3100), a granulating hob (3200) and a positioning roller (3300). The granulating hob (3200) is connected to the granulating drive mechanism (3100), and the granulating hob (3200) is arranged in parallel on one side of the positioning roller (3300). The granulating drive mechanism (3100) is used to drive the granulating hob (3200) to granulate the plastic tape; A conveying assembly (4000), located between the drying assembly (2000) and the granulating assembly (3000). The conveying assembly (4000) is used to drive the plastic tape to pass through the cooling assembly (1000), the drying assembly (2000) and the granulating assembly (3000) in sequence.

2. The cooling granulation device for a plastic masterbatch according to claim 1, characterized in that, The fixed traction roller (1200) is provided with n annular first limiting grooves (1210), where n is an integer greater than 1. The first limiting grooves (1210) are used to limit the plastic wire belt; the movable traction roller (1500) is provided with n second limiting grooves (1510), and the second limiting grooves (1510) are used to limit the plastic wire belt.

3. The cooling granulation device for a plastic masterbatch according to claim 1, characterized in that, The lifting drive structure (1300) includes a rotating shaft (1310) and two gears (1320). The two gears (1320) are connected to the rotating shaft (1310), and the rotating shaft (1310) is rotatably connected to the cooling box (1100); the lifting frame (1400) includes two guide sleeves (1410), two guide columns (1420) and two racks (1430). The two guide columns (1420) are respectively slidably connected in the two guide sleeves (1410). The two ends of the movable traction roller (1500) are respectively rotatably connected to the two guide columns (1420). The two racks (1430) are respectively connected to the tops of the two guide columns (1420). The two racks (1430) are respectively meshed and connected with the two gears (1320), and the two racks (1430) are located on the same side of the rotating shaft (1310).

4. A cooling granulation device for a plastic masterbatch according to claim 1, characterized in that, The hot air drying mechanism (2200) includes a hot air blower (2210) and an upper air duct (2220). The inlet of the upper air duct (2220) is connected to the hot air outlet of the hot air blower (2210), and the outlet of the upper air duct (2220) faces the top surface of the drying support mechanism (2100).

5. The cooling granulation device for a plastic masterbatch according to claim 4, characterized in that, The drying support mechanism (2100) includes at least two parallel support rollers (2110). The hot air drying mechanism (2200) further includes a side air duct (2230). The inlet of the side air duct (2230) is connected to the hot air outlet of the hot air blower (2210). The side air duct (2230) is located on one side of the drying support mechanism (2100), and the outlet of the side air duct (2230) is inclined from bottom to top towards the lower part of the drying support mechanism (2100).

6. The cooling granulation device for a plastic masterbatch according to claim 5, characterized in that, The support roller (2110) is provided with a number of water drainage through holes (2111), and the water drainage through holes (2111) are perpendicular to the support roller (2110).

7. The cooling granulation device for a plastic masterbatch according to claim 1, characterized in that, The conveying assembly (4000) includes a driving motor (4100) and two driving rollers (4200). The two driving rollers (4200) are adjacent in parallel, and one of the driving rollers (4200) is connected to the driving motor (4100).

8. A production line, characterized in that, A cooling and granulating device for plastic masterbatch according to any one of claims 1 to 7 further includes an extruder (5000). The extruder (5000) is located on one side of the cooling box (1100), and the extruder (5000) is used to extrude a plastic wire belt.

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