Waste plastic recycling, extruding and die-casting forming equipment

Abstract

The utility model discloses waste plastic recycling, extruding and die-casting forming equipment which comprises an extruding machine, a material blank transferring mechanism arranged in front of the extruding machine and a die-casting press, and an extruding machine head is arranged at the front end of the extruding machine. The material receiving platform is fixedly arranged below the extruding machine head, the moving platform is arranged on the conveying frame in a front-back moving mode, and a first circulating conveying belt capable of circularly rotating and a weighing sensor capable of outputting the weight of the material blank are arranged on the material receiving platform. A second circulating conveying belt capable of circularly rotating is arranged on the moving platform, and the upper surface of the second circulating conveying belt is lower than the lower surface of the first circulating conveying belt. The utility model has the advantages of compact and simple structure, efficient and fast extrusion process, stable and reliable transfer and transmission, high automation degree, high working efficiency and stable product quality.

Description

Technical Field

[0001] This application relates to the field of plastic processing and molding technology, and in particular to a waste plastic recycling extrusion die casting molding equipment. Background Art

[0002] Waste plastic recycling extrusion and die-casting equipment is mainly used in the field of plastic extrusion molding. Specifically, it involves remelting waste plastics and then extruding and die-casting them for recycling. Currently, plastics account for 15%-20% of urban solid waste. How to achieve efficient treatment and high-value reuse of waste plastics has become a major challenge. Therefore, there is an urgent need for waste plastic recycling extrusion and die-casting equipment to solve these problems. Summary of the Invention

[0003] In view of the above situation and to overcome the existing technical difficulties, the purpose of this utility model is to provide a waste plastic recycling extrusion die casting molding equipment to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] A waste plastic recycling extrusion die casting molding equipment includes an extruder, a preform transfer mechanism disposed in front of the extruder, and a die casting press. The front end of the extruder has an extruder head. The preform transfer mechanism includes a conveyor frame, a receiving platform fixedly disposed below the extruder head, and a movable platform disposed on the conveyor frame that can move back and forth. Below the receiving platform is a first circulating conveyor belt capable of cyclic rotation and a weighing sensor capable of outputting the weight of the preform. The movable platform is provided with a second circulating conveyor belt capable of cyclic rotation, and the upper surface of the second circulating conveyor belt is lower than the lower surface of the first circulating conveyor belt.

[0006] In one possible implementation, the side of the extruder head is further provided with a cold cutter for cutting the blank, the cold cutter being configured to cut the blank when the weight of the blank detected by the weighing sensor is greater than a set threshold.

[0007] In one possible implementation, both the first and second circulating conveyor belts are made of polytetrafluoroethylene (PTFE).

[0008] In one possible implementation, the conveyor frame includes a pair of tracks extending forward and backward, the moving platform includes a moving frame slidably connected to the pair of tracks, and the second circulating conveyor belt is mounted on the moving frame.

[0009] In one possible implementation, a gap is left between the movable frame and the front end of the second circulating conveyor belt so that the material blank can fall through the gap.

[0010] In one possible implementation, the front of the movable frame also has a pair of cantilever arms for ejecting the pallet product formed inside the die-casting press.

[0011] In one possible implementation, a pair of tracks of the conveyor frame pass through the die-casting press.

[0012] In one possible implementation, a finished product shelf for placing palletized products is also provided in front of the die-casting press.

[0013] This utility model has the advantages of compact and simple structure, low cost, efficient and fast extrusion process, stable and reliable transfer transmission, high degree of automation, high working efficiency, and stable product quality. Attached Figure Description

[0014] Figure 1 This is a front view of the extrusion die-casting equipment provided in an embodiment of this application.

[0015] Figure 2 This is a top view of the extrusion die-casting equipment provided in an embodiment of this application.

[0016] Among them, 100 is an extruder; 110 is a hopper; 120 is a screw feeder; 130 is a screen changer; 140 is an extruder head; 200 is a conveyor frame; 210 is a receiving platform; 211 is a first circulating conveyor belt; 212 is a first servo motor; 220 is a moving platform; 221 is a second circulating conveyor belt; 222 is a cantilever; 223 is a second servo motor; 224 is a moving frame; 225 is a gap; 226 is a track; 300 is a die-casting press; 310 is an upper mold; 320 is a lower mold; 400 is a finished product rack; 500 is a blank; and 510 is a pallet product. Detailed Implementation

[0017] To illustrate the technical content, structural features, achieved objectives, and effects of this application in detail, the technical solutions in the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of this application. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of an exemplary embodiment may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0018] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0019] Furthermore, in this application, spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side” (e.g., as in “sidewall”) are used to describe the relationship between one element and another (other) element as shown in the accompanying drawings. The spatial relative terms are intended to include different orientations of the device in use, operation, and / or manufacture other than those depicted in the drawings. Figure 1 The left side of the image is what is referred to as the "front" in the instruction manual.

[0020] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

[0021] The waste plastic recycling extrusion die-casting molding equipment mentioned in this application is referred to in [reference]. Figure 1 , 2 As shown in the diagram, the extruder 100 and hopper 110 are fastened together by bolts. The hopper 110 continuously supplies raw materials to the production process and can also monitor and measure the supply of raw materials in real time, achieving precise control over the material feeding. A screw feeder 120 is installed beside the extruder 100 and above the hopper 110. Because the hopper 110 is located above the extruder 100, the feeding process is inconvenient for workers; therefore, the screw feeder 120 is specifically provided to solve this problem. During operation, the worker pours the production raw materials into the screw feeder 120. The screw feeder 120 then spirals upwards, pouring the raw materials into the hopper 110. The hopper 110 then discharges the material, which enters the extruder 100, completing the feeding process.

[0022] A screen changer 130 is coaxially fixed at the front end of the extruder 100, and is installed at the outlet of the plastic melt. The screen changer 130 is equipped with a filter screen to remove impurities and unmelted particles from the plastic melt. To prevent the filter screen from becoming clogged after prolonged operation and affecting the normal operation of the machine, the screen changer 130 is pushed and pulled by a hydraulic cylinder. Each time a filter screen needs to be replaced, the hydraulic cylinder pulls it out, and then a worker replaces it. After the filter screen is replaced, the hydraulic cylinder pushes it back into the extruder outlet, and the equipment continues to operate.

[0023] An extruder head 140 is coaxially fixed in front of the screen changer 130. The extruder head 140 is mainly used to evenly spread the plastic melt extruded by the extruder 100 to ensure that the thickness of the preform is consistent and to guarantee product quality.

[0024] A special cold-cutting blade for preforms is installed below the extruder head 140. The special cold-cutting blade for preforms is responsible for cutting and slitting the preforms extruded from the extruder head 140, so that each preform has the same mass and ensures product quality.

[0025] A preform transfer mechanism is fixedly installed in front of the extruder 100 and below the extruder head 140 to transfer the preform to the die-casting press 300. The preform transfer mechanism includes a conveyor frame 200, a receiving platform 210, a moving platform 220, a first circulating conveyor belt 211, and a second circulating conveyor belt 221. A weighing tray and a weighing sensor are installed below the receiving platform 210. When the preform reaches a predetermined weight, a signal is sent to control the cold-cutting blade to cut it. The moving platform 220 can move horizontally back and forth on the conveyor frame 200 to receive the preform transferred from the receiving platform.

[0026] Both the first circulating conveyor belt 211 and the second circulating conveyor belt 221 are made of polytetrafluoroethylene (PTFE). The receiving platform 210 has a pair of rotating rollers and a first servo motor 212 connected to one of the rotating rollers. The first circulating conveyor belt 211 is tensioned on the pair of rotating rollers and driven to rotate by the first servo motor 212. The moving platform 220 also has a pair of rotating rollers and a second servo motor 223. Similarly, the second conveying platform 221 is tensioned on the pair of rotating rollers and driven to rotate by the second servo motor 223, thus causing the first circulating conveyor belt 211 and the second circulating conveyor belt 221 to rotate cyclically, transferring the material blanks falling on the conveyor belts forward.

[0027] After the extruder head extrudes the blank, the receiving platform 210 receives the blank first, and then the blank is slowly transferred forward by the first circulating conveyor belt 211. The moving platform 220 moves backward on the conveyor frame 200 and comes to the bottom of the first circulating conveyor belt 211 so that the blank can fall onto the second circulating conveyor belt 211. Then the moving platform 200 moves forward and the second circulating conveyor belt 211 rotates slowly to transfer the blank to the die-casting press 300 for die-casting.

[0028] The conveyor frame 200 includes a pair of tracks 226 extending back and forth. The moving platform 220 includes a moving frame 224 slidably connected to the pair of tracks 226. The second circulating conveyor belt 221 is mounted on the moving frame 224. The conveyor frame 200 is also provided with a rack parallel to the extension direction of the tracks. The moving frame is provided with a drive motor and a gear meshing with the rack. Under the action of the drive motor, the moving frame can move rapidly back and forth along the tracks.

[0029] A gap 225 is left between the movable frame 224 and the front end of the second circulating conveyor belt 221 so that the blank can fall through the gap 225 and enter the lower mold of the die-casting press.

[0030] The die-casting press 300 has a fixed lower mold 320, an upper mold 310 that can move up and down, and a cylinder that can lift the pallet product in the lower mold. After the blank is transferred to the die-casting press via the moving platform 220, the second circulating conveyor belt 211 rotates and spreads the blank evenly in the mold, and the moving platform 220 exits the die-casting press 300. Then, the die-casting press 300 starts working, the upper mold 310 and the lower mold 320 close, and the blank is die-cast to form the final product.

[0031] The newly formed pallet product 510 is at a very high temperature. In order to remove it from the die-casting press, this application also fixes a pair of cantilever arms 222 at the front of the moving frame 224. After the die-casting is completed, the upper and lower molds of the die-casting press are opened, and the cylinder lifts the pressed pallet product. When the moving platform 220 transports the next blank forward, the cantilever arms 222 at the front of the moving frame 224 are also inserted into the previous product in the die-casting press, and the completed pallet product is removed from the die-casting press 300. Then the moving platform 220 continues to feed the blank to be processed into the die-casting press for processing.

[0032] The die-casting press 300 is equipped with a finished product rack 400 in front of it. The finished products are removed from the cantilever and placed on the finished product rack to prevent the cantilever from being occupied and thus hindering the processing.

[0033] In the overall process of this utility model, the worker pours the raw material into the screw feeder, which is responsible for feeding the raw material into the upper hopper. Then the hopper discharges the material, which enters the extruder and melts into plastic melt. When passing through the screen changer, the impurities in the plastic melt are filtered out by the internal filter screen. Then it enters the extruder head for even spreading to form a preform. The conveyor belts on the receiving platform and the moving platform rotate at a constant speed, and the preform is evenly spread above the receiving platform. After reaching the predetermined weight value, the preform is cut into batches by a cold cutting knife. The first circulating conveyor belt then spreads the preform on the second circulating conveyor belt and sends it into the die-casting press for die-casting processing. At the same time, the cantilever sends the product from the previous cycle to the finished product rack, thus completing the entire cycle process of the equipment.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the inventive spirit and scope. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A waste plastic recycling extrusion die-casting molding equipment, comprising an extruder, a preform transfer mechanism disposed in front of the extruder, and a die-casting press, wherein the front end of the extruder has an extruder head, characterized in that: The material transfer mechanism includes a conveyor frame, a receiving platform fixedly installed below the extruder head, and a movable platform that can be moved back and forth on the conveyor frame. Below the receiving platform is a first circulating conveyor belt that can rotate cyclically and a weighing sensor that can output the weight of the material. The movable platform is equipped with a second circulating conveyor belt that can rotate cyclically, and the upper surface of the second circulating conveyor belt is lower than the lower surface of the first circulating conveyor belt.

2. The waste plastic recycling extrusion die-casting molding equipment according to claim 1, characterized in that, The side of the extruder head is also provided with a cold cutting blade for cutting the blank. The cold cutting blade is configured to cut the blank when the weight of the blank detected by the weighing sensor is greater than a set threshold.

3. The waste plastic recycling extrusion die-casting molding equipment according to claim 1, characterized in that, Both the first and second circulating conveyor belts are made of polytetrafluoroethylene (PTFE).

4. The waste plastic recycling extrusion die-casting molding equipment according to claim 1, characterized in that, The conveyor frame includes a pair of tracks extending forward and backward, the moving platform includes a moving frame slidably connected to the pair of tracks, and the second circulating conveyor belt is mounted on the moving frame.

5. The waste plastic recycling extrusion die-casting molding equipment according to claim 4, characterized in that, A gap is left between the movable frame and the front end of the second circulating conveyor belt so that the material blank can fall through the gap.

6. The waste plastic recycling extrusion die-casting molding equipment according to claim 4, characterized in that, The front of the movable frame also has a pair of cantilever arms for pushing out the tray products formed in the die-casting press.

7. The waste plastic recycling extrusion die-casting molding equipment according to claim 4, characterized in that, A pair of tracks of the conveyor frame pass through the die-casting press.

8. The waste plastic recycling extrusion die-casting molding equipment according to claim 1, characterized in that, The die-casting press is also equipped with a finished product shelf for placing palletized products in front of it.

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