Injection molding plant central feed system

Abstract

This utility model discloses a centralized material supply system for injection molding workshops, belonging to the field of injection molding material supply technology. It includes a storage tank, a first conveying pipe connected to the storage tank, a drying assembly located at the outlet end of the first conveying pipe, a vacuum assembly mounted on the drying assembly, and a second conveying pipe. The drying assembly includes a drying tank, a hot air assembly and a vibrating screen arranged sequentially from bottom to top within the drying tank, a suction hood located at the top of the drying tank, a first filter screen located at the suction end of the suction hood, and a filter assembly located at the outlet end of the suction hood. The filter assembly includes a filter box connected to the outlet end of the suction hood, a second filter screen located within the filter box, and an air outlet located on the side wall of the filter box. The mesh size of the second filter screen is smaller than that of the first filter screen. This utility model can effectively improve drying efficiency and collect dust generated during the drying process, avoiding adverse effects of dust on the environment and the quality of molded products.

Description

Technical Field

[0001] This utility model relates to the field of injection molding material supply technology, and in particular to a centralized material supply system for injection molding workshops. Background Technology

[0002] The centralized material supply system for injection molding workshops is an automated material conveying and management integrated system designed for the production of plastic products in injection molding workshops.

[0003] The specific material supply method is as follows: Plastic raw materials are transported from the storage tank to the drying device using a vacuum conveying system. After drying, the raw materials are then transported to each injection molding machine. Currently, hot air is commonly used to dry plastics. This hot air drying process generates a large amount of airborne dust. If this dust is not treated, it will mix into the plastic, seriously affecting the quality of the molded products. Furthermore, direct emission of dust into the workshop will also cause environmental pollution. Utility Model Content

[0004] The purpose of this invention is to provide a centralized material supply system for injection molding workshops, which can effectively remove dust generated during the plastic drying process, thereby effectively avoiding the adverse effects of dust on the quality of molded products and the workshop environment.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A centralized material supply system for an injection molding workshop includes a storage tank, a first conveying pipe connected to the storage tank, a drying assembly disposed at the outlet end of the first conveying pipe, a vacuum assembly disposed on the drying assembly, and a second conveying pipe; the drying assembly includes a drying tank, a hot air assembly and a vibrating screen disposed sequentially from bottom to top inside the drying tank, a suction hood disposed at the top of the drying tank, a first filter screen disposed at the suction end of the suction hood, and a filter assembly disposed at the air outlet end of the suction hood;

[0007] The filtration assembly includes a filter box connected to the air outlet of the suction hood, a second filter screen disposed inside the filter box, and an air outlet disposed on the side wall of the filter box; the mesh size of the second filter screen is smaller than that of the first filter screen.

[0008] Preferably, the vibrating screen is slidably connected to multiple U-shaped rods disposed on the inner wall of the drying tank, and springs are provided between the top and bottom walls of the vibrating screen and the U-shaped rods.

[0009] Preferably, the drying tank is provided with a rotating shaft, and an eccentric wheel that can contact the vibrating screen is sleeved on the rotating shaft. The outer wall of the drying tank is provided with a first motor connected to the rotating shaft.

[0010] Preferably, a central shaft is rotatably provided inside the suction hood, the bottom end of the central shaft is connected to a scraper rod located below the first filter screen, and the top end of the central shaft is fixedly connected to a second motor located above the suction hood.

[0011] Preferably, the drying assembly includes a hot air blower disposed at the bottom of the drying tank.

[0012] Preferably, the drying tank is provided with a hollow air distribution plate, the top of the air distribution plate is provided with multiple air holes, and the air outlet of the hot air blower is fixedly connected to the bottom of the air distribution plate through an air duct.

[0013] Preferably, the top of the filter box is provided with a box cover, and the second filter screen is detachably installed inside the filter box.

[0014] Preferably, the inner wall of the filter box is provided with a vertical sliding groove that slides with the second filter screen.

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

[0016] By installing a hot air assembly and a vibrating screen inside the drying tank, the plastic granules can be vibrated during drying, thereby increasing the contact area between the plastic granules and the hot air and improving drying efficiency.

[0017] By installing a suction hood at the top of the drying tank and a filter assembly connected to the suction hood, dust can be discharged along with the water vapor into the filter assembly during the discharge process, thereby blocking the dust and preventing it from entering the environment and causing pollution.

[0018] By installing a first filter screen at the suction end of the suction hood, plastic particles can be blocked, effectively preventing them from entering the suction hood.

[0019] Through the synergistic effect of the above-mentioned devices, the drying efficiency can be effectively improved, while the dust generated during the drying process can be collected to avoid dust pollution to the environment and to avoid dust adversely affecting the quality of the molded products. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure between the storage tank and the drying tank in the feeding system of Example 1;

[0021] Figure 2 This is a schematic cross-sectional view of the drying tank from the front view.

[0022] Figure 3 for Figure 2 A schematic diagram of the structure of a vibrating screen viewed from above.

[0023] Figure 4 for Figure 2 A top-view structural diagram of the middle filter box;

[0024] In the diagram: 1-Storage tank, 2-First conveying pipe, 3-Vacuum assembly, 4-Second conveying pipe, 5-Drying tank, 6-Vibrating screen, 7-Suction hood, 8-First filter screen, 9-Filter box, 10-Second filter screen, 11-U-shaped rod, 12-Spring, 13-Rotating shaft, 14-Eccentric wheel, 15-First motor, 16-Central shaft, 17-Scraper, 18-Hot air blower, 19-Air distribution plate, 20-Vertical chute. Detailed Implementation

[0025] Example 1

[0026] A centralized material supply system for injection molding workshops, such as Figure 1 As shown, it includes a storage tank 1, a first conveying pipe 2 connected to the storage tank 1, a drying assembly disposed at the outlet end of the first conveying pipe 2, and a vacuum assembly 3 disposed on the drying assembly (e.g., ...). Figure 2 As shown, a vacuum pump (or other existing technology) and a second conveying pipe 4 (the number of which is set according to the actual situation) can be selected. The second conveying pipe 4 is connected to the injection molding machine. The centralized feeding system in this utility model only improves the drying component of the existing feeding system. The remaining components all adopt existing technology, and the feeding method also adopts existing technology.

[0027] Among them, such as Figure 2 and Figure 3 As shown, the drying assembly includes a drying tank 5, a hot air assembly and a vibrating screen 6 arranged sequentially from bottom to top inside the drying tank 5, a suction hood 7 disposed at the top of the drying tank 5, a first filter 7 disposed at the suction end of the suction hood 7, and a filter assembly disposed at the air outlet end of the suction hood 7; as shown Figure 2 As shown, the filter assembly includes a filter box 9 connected to the air outlet of the suction hood 7, a second filter screen 10 disposed inside the filter box 9, and an air outlet disposed on the side wall of the filter box 9; the mesh size of the second filter screen 10 is smaller than the mesh size of the first filter screen 7.

[0028] Furthermore, such as Figure 2 and Figure 3As shown, the vibrating screen 6 is slidably connected to multiple U-shaped rods 11 disposed on the inner wall of the drying tank 5. Springs 12 are installed between the top and bottom walls of the vibrating screen 6 and the U-shaped rods 11. Furthermore, a rotating shaft 13 is disposed inside the drying tank 5, and an eccentric wheel 14 capable of contacting the vibrating screen 6 is sleeved on the rotating shaft 13. A first motor 15 connected to the rotating shaft 13 is disposed on the outer wall of the drying tank 5. A small gap exists between the vibrating screen 6 and the inner wall of the drying tank 5 to prevent friction between the vibrating screen 6 and the inner wall of the drying tank 5 during vertical vibration, thus avoiding affecting their service life.

[0029] Furthermore, such as Figure 1 As shown, the drying assembly includes a hot air blower 18 disposed at the bottom of the drying tank 5. Furthermore, a hollow air distribution plate 19 is disposed inside the drying tank 5, and the top of the air distribution plate 19 has multiple air holes. The air outlet of the hot air blower 18 is fixedly connected to the bottom of the air distribution plate 19 via an air duct.

[0030] Working principle: Under the action of the vacuum pump, a negative pressure is generated in the drying tank 5, which causes the plastic particles in the storage tank 1 to be transported to the drying tank 5 along the first conveying pipe 2 and retained on the vibrating screen 6. Then, the hot air blower 18 is started. Under the action of the hot air blower 18, the hot air enters the air distribution plate 19 along the air duct and is discharged through multiple air holes to achieve the purpose of drying the plastic particles on the vibrating screen 6.

[0031] During this process, the first motor 15 is turned on, and under the action of the first motor 15, the rotating shaft 13 drives the eccentric wheel 14 to rotate. During the rotation, the eccentric wheel 14 collides with the vibrating screen 6, thereby causing the vibrating screen 6 to vibrate up and down, achieving the purpose of vibration drying.

[0032] During the drying process, moisture and dust diffuse upwards and sequentially enter the suction hood 7 and filter box 9. After being filtered by the second filter screen 10, the dust is collected.

[0033] In addition, in actual implementation, an exhaust fan can be installed between the suction hood 7 and the filter box 9, and the three can be connected in sequence through pipes to select whether to speed up the discharge of water vapor and dust according to the actual situation.

[0034] Example 2

[0035] In Example 1, some lightweight plastic particles may adhere to the bottom of the first filter screen 7 under the action of hot airflow, thereby obstructing the diffusion of water vapor and dust. Based on this, in addition to Example 1, such as Figure 2As shown, a central shaft 16 is rotatably mounted inside the suction hood 7. The bottom end of the central shaft 16 is connected to a scraper 17 located below the first filter screen 7, and the top end of the central shaft 16 is fixedly connected to a second motor located above the suction hood 7. During drying, the second motor is turned on, causing the scraper 17 to rotate and scrape off the plastic particles adhering to the bottom of the first filter screen 7. Additionally, some dust adhering to the bottom of the first filter screen 7 can also be scraped off.

[0036] Furthermore, such as Figure 2 As shown, the top of the filter box 9 is provided with a cover, and the cover and the filter box 9 can be connected by existing connection methods such as threaded connections. The second filter screen 10 is detachably installed inside the filter box 9. In this solution, the cover can be opened to install and remove the second filter screen 10. Furthermore, as... Figure 4 As shown, the inner wall of the filter box 9 is provided with a vertical sliding groove 20 that slides with the second filter screen 10. The vertical sliding groove 20 facilitates the limiting of the second filter screen 10 and improves the smoothness of the installation and removal of the second filter screen 10.

Claims

1. A centralized material supply system for an injection molding workshop, comprising a storage tank (1), a first conveying pipe (2) connected to the storage tank (1), a drying assembly disposed at the discharge end of the first conveying pipe (2), a vacuum assembly (3) disposed on the drying assembly, and a second conveying pipe (4). Its features are, The drying assembly includes a drying tank (5), a hot air assembly and a vibrating screen (6) arranged sequentially from bottom to top inside the drying tank (5), a suction hood (7) arranged at the top of the drying tank (5), a first filter screen (8) arranged at the suction end of the suction hood (7), and a filter assembly arranged at the air outlet end of the suction hood (7). The filter assembly includes a filter box (9) connected to the air outlet of the suction hood (7), a second filter screen (10) disposed in the filter box (9), and an air outlet disposed on the side wall of the filter box (9); the mesh size of the second filter screen (10) is smaller than that of the first filter screen (8).

2. The centralized material supply system for an injection molding workshop according to claim 1, characterized in that, The vibrating screen (6) is slidably connected to multiple U-shaped rods (11) arranged on the inner wall of the drying tank (5), and springs (12) are provided between the top and bottom walls of the vibrating screen (6) and the U-shaped rods (11).

3. A centralized material supply system for an injection molding workshop according to claim 2, characterized in that, The drying tank (5) is provided with a rotating shaft (13), and an eccentric wheel (14) that can contact the vibrating screen (6) is sleeved on the rotating shaft (13). The outer wall of the drying tank (5) is provided with a first motor (15) connected to the rotating shaft (13).

4. The centralized material supply system for an injection molding workshop according to claim 1, characterized in that, The suction hood (7) has a central shaft (16) rotatably mounted inside. The bottom end of the central shaft (16) is connected to a scraper (17) located below the first filter screen (8). The top end of the central shaft (16) is fixedly connected to a second motor located above the suction hood (7).

5. A centralized material supply system for an injection molding workshop according to claim 1, characterized in that, The drying assembly includes a hot air blower (18) located at the bottom of the drying tank (5).

6. A centralized material supply system for an injection molding workshop according to claim 5, characterized in that, The drying tank (5) is equipped with a hollow air distribution plate (19). The top of the air distribution plate (19) is provided with multiple air holes. The air outlet of the hot air blower (18) is fixedly connected to the bottom of the air distribution plate (19) through an air duct.

7. A centralized material supply system for an injection molding workshop according to claim 1, characterized in that, The filter box (9) is provided with a box cover at the top, and the second filter screen (10) is detachably installed inside the filter box (9).

8. A centralized material supply system for an injection molding workshop according to claim 7, characterized in that, The inner wall of the filter box (9) is provided with a vertical sliding groove (20) that slides with the second filter screen (10).

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