Device for sorting PET plastic bottles with different wall thicknesses

Abstract

The utility model relates to the technical field of PET plastic bottles, in particular to a different-wall-thickness PET plastic bottle sorting device which comprises a car loader truss, a first supporting plate, a second supporting plate, a guide plate, a base, universal wheels, a positioning stud, a bent plate and a protective plate. A fixing seat and a gravity sensor are mounted under the action of a weighing bin, PET plastic bottles with different wall thicknesses are recognized through the gravity sensor during use, the PET plastic bottles are convenient to weigh, then a hydraulic cylinder works to drive a mounting plate to slide in a rectangular hole, the height of a frame and the height of a conveying mechanism can be possibly controlled, and the conveying efficiency is improved. And when the PET plastic bottles are conveyed to the same height as the material guiding mechanism, a working motor is started, the working motor drives a rotating rod and rotating wheels to rotate when working, the rotating wheels in different directions are controlled to rotate through the PET plastic bottles recognized by a gravity sensor, and then sorting of the PET plastic bottles with different thicknesses can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of PET plastic bottle technology, specifically a PET plastic bottle sorting device with different wall thicknesses. Background Technology

[0002] PET plastic bottles, used for beverage packaging, are widely used not only for carbonated drinks, drinking water, juice, enzyme drinks, and tea beverages, making them the most widely used beverage packaging today, but also for food, chemical, and pharmaceutical packaging. PET plastic has extensive applications in the packaging industry, used in both packaging films and roll materials. However, the disposal of these materials after they are discarded raises the question of how to handle them. China produces tens of billions of PET plastic bottles annually, and it is estimated that by 2005, more than 500,000 tons of PET would be used annually in the manufacture of PET plastic bottles.

[0003] A search revealed CN116984267A, a sorting device for processing PET plastic bottle caps, comprising a mounting frame, an arc-shaped frame, and conveyor belts. The arc-shaped frame is fixed to the mounting frame; two conveyor belts are connected to the arc-shaped frame; and another conveyor belt is connected between the two conveyor belts via a connecting block. This patent can determine the internal thread condition of the bottle cap by measuring the maximum value reached by a first arc-shaped pressure sensor. The bottle cap is then blown onto the front conveyor belt by air jets through a rectangular groove. Similarly, when a qualified bottle cap passes the conveyor belt between the left and front sides, it is blown onto the same conveyor belt. By using different conveyor belts to transport qualified and defective bottle caps separately, the device can sort qualified and defective bottle caps. This solves the problem of insufficient cooling and shrinkage of the internal threads of bottle caps, resulting in excessively thick threads, which causes the bottle caps to be deformed when tightened or difficult to unscrew after tightening.

[0004] The sorting equipment for PET plastic bottle cap processing in the aforementioned patent has a common problem with similar devices on the market: it cannot accurately sort PET plastic bottles according to their wall thickness, resulting in low sorting quality. Furthermore, it cannot clean the PET plastic bottles during sorting, which easily leads to sorting errors. Utility Model Content

[0005] To address the aforementioned issues, a PET plastic bottle sorting device with different wall thicknesses is provided. A gravity sensor identifies PET plastic bottles of varying wall thicknesses for easy weighing. A hydraulic cylinder then drives a mounting plate to slide within a rectangular hole, allowing for precise control of the height between the frame and the conveying mechanism, thus raising the PET plastic bottles. When the PET plastic bottles are conveyed to the same height as the guiding mechanism, a working motor is activated. This motor drives a rotating rod and rotating wheels. The gravity sensor identifies the PET plastic bottles, controlling the rotation of the rotating wheels in different directions, thereby enabling the sorting of PET plastic bottles of different thicknesses.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sorting device for PET plastic bottles with different wall thicknesses includes a frame, a conveyor belt, a gantry plate, and a weighing bin. The conveyor belt is located inside the frame, the gantry plate is located on top of the frame, a gas tank is located on top of the gantry plate, and the weighing bin is located at the unloading end of the frame. The outer wall of the weighing bin has symmetrical rectangular holes.

[0008] The weighing chamber is equipped with a weighing mechanism, a lifting mechanism, a conveying mechanism, and a material guiding mechanism.

[0009] Furthermore, the weighing mechanism includes a fixed base, which is disposed inside the weighing chamber. A placement slot is provided on the top of the fixed base, and a gravity sensor is installed inside the placement slot.

[0010] Furthermore, the lifting mechanism includes a frame, which is disposed inside the weighing chamber. The frame has mounting plates on both sides that are adapted to the rectangular holes, and a hydraulic cylinder is disposed at the bottom of the mounting plates.

[0011] Furthermore, the conveying mechanism includes a U-shaped plate, which is disposed on the inner wall of the lifting mechanism. There are three U-shaped plates. A rotating rod is rotatably installed inside the U-shaped plate. A working motor is provided at the input end of the rotating rod. Rotating wheels are provided at equal intervals on the outer wall of the rotating rod.

[0012] Furthermore, the inner wall of the frame is provided with a feeding plate, and the frame and the feeding plate are rotatably installed by a hinge, and the number of feeding plates is set to three.

[0013] Furthermore, the material guiding mechanism includes a vertical plate and a conveying plate. The vertical plate is disposed above the outer wall of the weighing bin, and the conveying plate is disposed on one side of the vertical plate. The vertical plate and the conveying plate are rotatably mounted together by a shaft. The number of conveying plates is set to three, and a storage bin is disposed below the conveying plate.

[0014] Furthermore, the outer wall of the weighing chamber is symmetrically provided with guide holes, and a horizontal plate connected to the lifting mechanism is slidably installed inside the guide holes. A rod is provided at the bottom of the horizontal plate, and an air cylinder is provided at the bottom of the rod. The air cylinder and the air tank are connected by an air pipe, and an air blowing head is provided below the air tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The fixed base and gravity sensor are installed under the action of the weighing bin. During use, the gravity sensor identifies PET plastic bottles of different wall thicknesses for easy weighing. Then, the hydraulic cylinder drives the mounting plate to slide inside the rectangular hole, which facilitates the control of the height between the frame and the conveying mechanism, thereby raising the PET plastic bottles. When the PET plastic bottles are conveyed to the same height as the guiding mechanism, the working motor is started. When the working motor is working, it drives the rotating rod and rotating wheel to rotate. The PET plastic bottles identified by the gravity sensor control the rotation of the rotating wheel in different directions, thereby realizing the sorting of PET plastic bottles of different thicknesses.

[0017] 2. The lifting mechanism drives the horizontal plate and the insertion rod to rise and fall. The insertion rod extends and retracts inside the air cylinder to generate gas. The gas is then transported into the air tank through the air pipe. The air blowing head at the bottom of the air tank can perform pre-treatment of PET plastic bottles before sorting, ensuring the cleanliness of the PET plastic bottles and avoiding errors in PET plastic bottle sorting due to the presence of impurities, thus improving the practicality of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the insertion rod and the air cylinder of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the weighing chamber of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the air cylinder and the air tank of this utility model.

[0023] Figure reference numerals: 1. Frame; 2. Conveyor belt; 3. Gantry plate; 4. Weighing bin; 5. Weighing mechanism; 51. Fixed base; 52. Gravity sensor; 6. Lifting mechanism; 61. Frame; 62. Mounting plate; 7. Conveying mechanism; 71. U-shaped plate; 72. Rotating rod; 73. Rotating wheel; 8. Material guiding mechanism; 81. Vertical plate; 82. Conveying plate; 9. Rectangular hole; 10. Feeding plate; 11. Storage bin; 12. Horizontal plate; 13. Inserting rod; 14. Air cylinder; 15. Air tank. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to the following: Figures 1 to 5 A sorting device for PET plastic bottles with different wall thicknesses includes a frame 1, a conveyor belt 2, a gantry plate 3 and a weighing bin 4. The conveyor belt 2 is located inside the frame 1. The gantry plate 3 is located on the top of the frame 1. A gas tank 15 is located on the top of the gantry plate 3. The weighing bin 4 is located at the unloading end of the frame 1. Rectangular holes 9 are symmetrically opened on the outer wall of the weighing bin 4.

[0026] The weighing chamber 4 is equipped with a weighing mechanism 5, a lifting mechanism 6, a conveying mechanism 7, and a guiding mechanism 8.

[0027] PET plastic bottles of different wall thicknesses are transported to the weighing chamber 4 via the conveyor belt 2 inside the frame 1. The weighing mechanism 5 inside the weighing chamber 4 weighs the PET plastic bottles of different wall thicknesses. Then, the lifting mechanism 6 is controlled to lift and lower the bottles. During the lifting and lowering process, the lifting mechanism 6 drives the conveying mechanism 7 to move. Then, according to the weight of the PET plastic bottles of different wall thicknesses, the different conveying mechanisms 7 are activated to facilitate the sorting of PET plastic bottles of different wall thicknesses. The sorted PET plastic bottles enter the guiding mechanism 8, which can transport PET plastic bottles of different wall thicknesses to the designated position.

[0028] like Figure 1 and Figure 2 As shown, the weighing mechanism 5 includes a fixed base 51, which is disposed inside the weighing chamber 4. A placement slot is provided on the top of the fixed base 51, and a gravity sensor 52 is installed inside the placement slot.

[0029] The fixed base 51 and gravity sensor 52 are installed under the action of the weighing chamber 4. When in use, the gravity sensor 52 identifies PET plastic bottles with different wall thicknesses, making it convenient to weigh and sort them.

[0030] like Figure 1 and Figure 4 As shown, the lifting mechanism 6 includes a frame 61, which is disposed inside the weighing chamber 4. Mounting plates 62 that are adapted to the rectangular holes 9 are provided on both sides of the frame 61, and a hydraulic cylinder is provided at the bottom of the mounting plate 62.

[0031] The hydraulic cylinder can drive the mounting plate 62 to slide inside the rectangular hole 9. When the mounting plate 62 is raised or lowered, it can drive the frame 61 and the conveying mechanism 7 to be raised, which prepares for the sorting of PET plastic bottles.

[0032] like Figure 1 and Figure 4 As shown, the conveying mechanism 7 includes a U-shaped plate 71, which is disposed on the inner wall of the lifting mechanism 6. There are three U-shaped plates 71. A rotating rod 72 is rotatably installed inside the U-shaped plate 71. A working motor is provided at the input end of the rotating rod 72. Rotating wheels 73 are evenly spaced on the outer wall of the rotating rod 72.

[0033] Start the working motor. When the working motor is working, it drives the rotating rod 72 and the rotating wheel 73 to rotate. By rotating the rotating wheel 73 in different directions, PET plastic bottles of different thicknesses can be sorted.

[0034] like Figure 3 As shown, the inner wall of the frame 61 is provided with a feeding plate 10. The frame 61 and the feeding plate 10 are rotatably installed by a hinge. There are three feeding plates 10. The guiding mechanism 8 includes a vertical plate 81 and a conveying plate 82. The vertical plate 81 is located above the outer wall of the weighing chamber 4. The conveying plate 82 is located on one side of the vertical plate 81. The vertical plate 81 and the conveying plate 82 are rotatably installed by a shaft. There are three conveying plates 82. A storage chamber 11 is provided below the conveying plate 82.

[0035] The lifting and lowering of the frame 61 allows the feeding plate 10 to rotate, which increases the contact area and facilitates the positioning and lifting of the PET plastic bottles. This makes it easier to transport them to the guiding mechanism 8. The cooperation between the upright plate 81 and the conveying plate 82 inside the guiding mechanism 8 facilitates the transport of the PET plastic bottles to the designated position.

[0036] like Figure 1 , Figure 3 and Figure 5As shown, the outer wall of the weighing chamber 4 is symmetrically provided with guide holes. A horizontal plate 12 connected to the lifting mechanism 6 is slidably installed inside the guide holes. A rod 13 is provided at the bottom of the horizontal plate 12. An air cylinder 14 is provided at the bottom of the rod 13. The air cylinder 14 is connected to the air tank 15 through an air pipe. An air blowing head is provided below the air tank 15.

[0037] The lifting mechanism 6 drives the horizontal plate 12 and the insertion rod 13 to rise and fall. The insertion rod 13 extends and retracts inside the air cylinder 14 to generate gas. The gas is transported into the air tank 15 by the air pipe. The air blowing head under the air tank 15 can realize the pre-treatment of PET plastic bottles before sorting, ensuring the cleanliness of PET plastic bottles and avoiding errors in PET plastic bottle sorting due to the presence of impurities, thus improving the practicality of the device.

[0038] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A PET plastic bottle different wall thickness sorting device, comprising a rack (1), a conveying belt (2), a gantry plate (3) and a weighing bin (4), the conveying belt (2) is arranged in the inside of the rack (1), the gantry plate (3) is arranged on the top of the rack (1), the top of the gantry plate (3) is provided with an air tank (15), the weighing bin (4) is arranged at the discharging end of the rack (1), and the outer wall of the weighing bin (4) is symmetrically provided with a rectangular hole (9). characterized in that The inside of the weighing bin (4) is respectively provided with a weighing mechanism (5), a lifting mechanism (6), a conveying mechanism (7) and a material guiding mechanism (8).

2. A device for sorting PET plastic bottles of different wall thicknesses according to claim 1, characterized in that, The weighing mechanism (5) comprises a fixed seat (51), the fixed seat (51) is arranged in the inside of the weighing bin (4), the top of the fixed seat (51) is provided with a placing groove, and the inside of the placing groove is mounted with a gravity sensor (52).

3. The PET plastic bottle different wall thickness sorting device according to claim 1, characterized in that, The lifting mechanism (6) comprises a frame (61), the frame (61) is arranged in the inside of the weighing bin (4), the two sides of the frame (61) are provided with mounting plates (62) matched with the rectangular hole (9), and the bottom of the mounting plate (62) is provided with a hydraulic cylinder.

4. The PET plastic bottle different wall thickness sorting device according to claim 1, characterized in that, The conveying mechanism (7) comprises a U-shaped plate (71), the U-shaped plate (71) is arranged on the inner wall of the lifting mechanism (6), the number of the U-shaped plate (71) is three, a rotating rod (72) is rotatably arranged in the U-shaped plate (71), a working motor is arranged on the input end of the rotating rod (72), and rotating wheels (73) are arranged at equal intervals on the outer wall of the rotating rod (72).

5. The PET plastic bottle different wall thickness sorting device according to claim 3, characterized in that, The inside of the frame (61) is provided with a feeding plate (10), the frame (61) and the feeding plate (10) are rotatably connected through a hinge, and the number of the feeding plate (10) is three.

6. The PET plastic bottle different wall thickness sorting device according to claim 1, characterized in that, The material guiding mechanism (8) comprises a vertical plate (81) and a conveying plate (82), the vertical plate (81) is arranged above the outer wall of the weighing bin (4), the conveying plate (82) is arranged on one side of the vertical plate (81), the vertical plate (81) and the conveying plate (82) are rotatably connected through a shaft rod, the number of the conveying plate (82) is three, and a storage bin (11) is arranged below the conveying plate (82).

7. The PET plastic bottle different wall thickness sorting device according to claim 1, characterized in that, The outer wall of the weighing bin (4) is symmetrically provided with a guide hole, a horizontal plate (12) connected with the lifting mechanism (6) is slidably arranged in the guide hole, an insertion rod (13) is arranged at the bottom of the horizontal plate (12), an air cylinder (14) is arranged at the bottom of the insertion rod (13), the air cylinder (14) and the air tank (15) are connected through an air pipe, and a blowing head is arranged below the air tank (15).

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