Feeding mechanism and device for multi-thread polyethylene production injection molding machine

Abstract

The utility model relates to the technical field of injection molding, and particularly discloses a multi-thread polyethylene production injection molding machine feeding mechanism and device, the multi-thread polyethylene production injection molding machine feeding mechanism comprises a storage box, a material distribution assembly and a conveying pipeline, the storage box is used for storing polyethylene raw materials, the storage box is provided with a storage cavity, a feeding port and a discharging port, and the storage cavity communicates with the feeding port and the discharging port; the material distributing assembly comprises a material distributing barrel and feeding barrels, a plurality of discharging pipes are arranged at the bottom of the material distributing barrel, a plurality of feeding barrels are arranged at the bottoms of the discharging pipes, and each feeding barrel corresponds to the corresponding discharging pipe. The conveying pipeline is arranged between the storage box and the material distribution barrel, one end of the conveying pipeline is communicated with the storage box, the other end of the conveying pipeline is communicated with the material distribution barrel, the conveying pipeline is used for conveying the polyethylene raw materials from the storage box to the material distribution barrel, the material distribution barrel conveys the polyethylene raw materials to the multiple feeding barrels, and each feeding barrel is connected with an injection molding machine. According to the method, multi-thread feeding can be achieved, and the feeding efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of injection molding technology, and in particular to a feeding mechanism and device for a multi-threaded polyethylene production injection molding machine. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. Injection molding machines heat the plastic, apply high pressure to the molten plastic, and force it to be injected into the mold cavity. The working principle of an injection molding machine is similar to that of a syringe; it uses the thrust of a screw or plunger to inject pre-plasticized molten plastic into a closed mold cavity, where it solidifies and sets to obtain the finished product.

[0003] The existing injection molding feeding mechanism's raw material tank can only supply one injection molding machine, resulting in low feeding efficiency and consequently low injection molding efficiency. Utility Model Content

[0004] To address the problem of low material feeding efficiency in existing injection molding machines, this application provides a material feeding mechanism and device for a multi-threaded polyethylene production injection molding machine.

[0005] On the one hand, the feeding mechanism of a multi-threaded polyethylene injection molding machine provided in this application adopts the following technical solution:

[0006] A feeding mechanism for a multi-threaded polyethylene injection molding machine includes:

[0007] A storage tank is used to store polyethylene raw materials. The storage tank has a storage cavity, an inlet, and an outlet, and the storage cavity is connected to the inlet and outlet.

[0008] The material distribution assembly includes a material distribution hopper and a material feeding hopper. The bottom of the material distribution hopper is equipped with multiple discharge pipes, and the bottom of the discharge pipes is equipped with multiple material feeding hoppers, each corresponding to a discharge pipe. Each material feeding hopper is connected to an injection molding machine.

[0009] The conveying pipeline is located between the storage tank and the distribution tank. One end of the conveying pipeline is connected to the storage tank, and the other end is connected to the distribution tank. The conveying pipeline is used to transport polyethylene raw materials from the storage tank to the distribution tank.

[0010] By adopting the above technical solution, and by setting up multiple discharge pipes and multiple feeding barrels, with each discharge pipe corresponding to a feeding barrel, multiple injection molding machines can be fed simultaneously, which helps to improve feeding efficiency and thus improve injection molding efficiency. At the same time, when one injection molding machine malfunctions, other injection molding machines can ensure normal feeding operations.

[0011] In some embodiments, the dispensing hopper includes a hopper body and a hopper lid. The hopper body has a dispensing cavity, and the hopper lid is installed on the hopper body to close the dispensing cavity. A dispensing shaft is provided inside the dispensing cavity, and a first drive source is provided on the hopper lid. The dispensing shaft is drivenly connected to the first drive source. A guide plate and multiple dispensing plates are provided at the end of the dispensing shaft away from the first drive source. The guide plate is annular, and the dispensing plates are connected to the guide plate and arranged at intervals around the circumference of the guide plate. The dispensing plates divide the dispensing cavity into multiple sub-cavities, each of which corresponds to a discharge pipe.

[0012] By adopting the above technical solution, the first driving source drives the material distribution shaft to rotate, and the material distribution shaft drives the material distribution plate and the guide plate to rotate synchronously. Under the rotation of the material distribution plate, the polyethylene raw material is discharged from different discharge pipes, so as to feed multiple feeding barrels at the same time, which helps to improve the feeding efficiency. At the same time, it can also prevent the polyethylene raw material from adhering to the inner wall of the barrel, which helps to improve the feeding effect.

[0013] In some embodiments, a discharge pipe is provided at the bottom of the dispensing hopper, and a discharge hopper is provided at the bottom of the discharge pipe. A guide plate is used to close the discharge pipe. A lifting assembly is provided on the hopper body. The lifting assembly is connected to the hopper lid. The guide plate moves up and down with the hopper lid to realize the opening and closing of the discharge pipe.

[0014] By adopting the above technical solution, a discharge pipe is set up to discharge waste. The lifting component drives the barrel lid and guide plate to rise, thereby opening the discharge pipe. This makes it easy to clean the barrel and discharge waste when feeding is finished or when the raw materials need to be replaced.

[0015] In some embodiments, the lifting assembly includes a second drive source and a telescopic rod. The telescopic rod is disposed between the barrel body and the barrel lid, with one end connected to the barrel body and the other end connected to the barrel lid. A first mounting plate is disposed on the outer wall of the barrel body, and the second drive source is mounted on the first mounting plate. The second drive source is disposed along the axial direction of the barrel body. A second mounting plate is connected to the outer wall of the barrel lid, and the second drive source is drively connected to the second mounting plate so that the barrel lid moves along the axial direction of the barrel body.

[0016] By adopting the above technical solution, the barrel lid is driven to move axially by the second drive source, and the telescopic rod guides the movement of the barrel lid, thereby achieving stable movement of the barrel lid, facilitating the opening and closing of the discharge pipe, and making operation convenient.

[0017] In some embodiments, the guide plate has an inclined surface that slopes toward the discharge pipe.

[0018] By adopting the above technical solution and setting an inclined surface, it is easier for the raw material to move to the discharge pipe side, and easier for the raw material to enter the feeding hopper from the distribution hopper. This helps to avoid the raw material from settling at the bottom of the distribution hopper and improves the utilization rate of the raw material.

[0019] In some implementations, a discharge valve is provided at the discharge pipe for opening and closing the discharge pipe, and a discharge valve is provided on each discharge pipe for opening and closing the discharge pipe. The discharge valves are independent of each other.

[0020] By adopting the above technical solution, by setting up a discharge valve and an outlet valve, and by controlling the opening and closing of the outlet valve, the amount of material fed can be controlled to adapt to various injection molding scenarios. By opening and closing the discharge valve, it is convenient to switch between feeding and cleaning modes, making operation convenient and helping to improve production efficiency.

[0021] In some implementations, the sidewall of the dispensing plate contacts the inner wall of the barrel, and the bottom wall of the dispensing plate contacts the inner bottom wall of the barrel.

[0022] By adopting the above technical solution, the material distribution plate contacts the inner wall of the barrel, and the rotation of the material distribution plate can clean the raw materials adhering to the inner wall of the barrel, so as to achieve a better cleaning effect.

[0023] In some embodiments, a connecting block is provided on the material distribution shaft, and a guide groove is provided on the inner wall of the guide plate, into which the connecting block is inserted.

[0024] By adopting the above technical solution, and by setting up connecting blocks and guide grooves, the connection effect between the material distribution shaft and the guide plate can be enhanced.

[0025] In some embodiments, the material distribution plate and the guide plate are detachably connected. The outer wall of the guide plate is provided with multiple connecting grooves. The material distribution plate is provided with connecting strips, which are slidably inserted into the connecting grooves. The connecting grooves are provided with snap-fit ​​blocks, and the connecting strips are provided with snap-fit ​​grooves. The snap-fit ​​blocks are embedded in the snap-fit ​​grooves.

[0026] By adopting the above technical solution, it is easy to install and disassemble the material distribution plate and the guide plate, and the operation is convenient and easy to clean the material distribution plate.

[0027] On the other hand, this application provides a multi-threaded polyethylene production injection molding apparatus, including any of the above-mentioned multi-threaded polyethylene production injection molding machine feeding mechanisms.

[0028] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0029] 1. It can simultaneously feed materials to multiple injection molding machines through the feeding hopper, realizing multi-threaded feeding, improving work efficiency, and ensuring the normal operation of other injection molding machines when one injection molding machine fails;

[0030] 2. By setting up a material distribution plate, it is possible to minimize the adhesion of raw materials to the inner wall of the barrel, which helps to improve the feeding effect and increase the feeding efficiency;

[0031] 3. By setting up a lifting component, it is easy to discharge waste and clean the inner wall of the barrel. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0033] Figure 2 This is a top view of the material dispensing component in an embodiment of this application.

[0034] Figure 3 This is a schematic diagram of the material dispensing bucket in an embodiment of this application.

[0035] Figure 4 This is a schematic diagram of the internal structure of the dispensing bucket in an embodiment of this application.

[0036] Figure 5 This is a cross-sectional view of the dispensing bucket in an embodiment of this application.

[0037] Figure 6 This is a top view of the guide plate in an embodiment of this application.

[0038] In the picture:

[0039] 1. Storage box; 12. Feed inlet; 13. Discharge outlet; 2. Material distribution assembly; 21. Material distribution bucket; 211. Discharge pipe; 212. Bucket body; 213. Bucket cover; 214. Material distribution chamber; 215. Material distribution shaft; 216. First drive source; 217. Material distribution plate; 218. Guide plate; 219. Discharge pipe; 22. Feeding bucket; 23. Discharge valve; 24. Discharge valve; 25. Connecting block; 26. Guide groove; 27. Connecting groove; 29. ​​Snap-fit ​​block; 3. Conveying pipe; 4. Discharge bucket; 5. Lifting assembly; 51. Second drive source; 52. Telescopic rod; 53. First mounting plate; 54. Second mounting plate. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely 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. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0042] Reference Figure 1 and Figure 2 This application provides a feeding mechanism for a multi-threaded polyethylene injection molding machine, including a storage tank 1, a distributing assembly 2, and a conveying pipe 3. The storage tank 1 is used to store polyethylene raw materials and has a storage cavity, an inlet 12, and an outlet 13, which are connected to the inlet 12 and the outlet 13. The distributing assembly 2 includes a distributing bucket 21 and a feeding bucket 22. Multiple discharge pipes 211 are provided at the bottom of the distributing bucket 211, and multiple feeding buckets 22 are provided at the bottom of the discharge pipes 211, with each feeding bucket 22 corresponding to a discharge pipe 211. The conveying pipe 3 is located between the storage tank 1 and the distributing bucket 21, with one end connected to the storage tank 1 and the other end connected to the distributing bucket 21. The conveying pipe 3 is used to transport polyethylene raw materials from the storage tank 1 to the distributing bucket 21, and the distributing bucket 21 then conveys the polyethylene raw materials to the multiple feeding buckets 22, with each feeding bucket 22 connected to an injection molding machine. The injection molding machine is a screw extruder, which is a current technology and will not be described in detail here.

[0043] By setting multiple discharge pipes 211 at the bottom of the distribution hopper 21, with the discharge pipes 211 corresponding to the feeding hopper 22, multiple feeding hoppers 22 can be fed simultaneously, which helps to improve feeding efficiency and thus improve injection molding efficiency. Furthermore, when one of the injection molding machines malfunctions, feeding to the feeding hopper 22 corresponding to the malfunctioning injection molding machine can be stopped, ensuring normal feeding of other injection molding machines.

[0044] Furthermore, refer to Figure 3 and Figure 4 In this embodiment, the dispensing hopper 21 includes a hopper body 212 and a hopper cover 213. A dispensing chamber 214 is provided inside the hopper body 212. The hopper cover 213 is installed on the hopper body 212 and is used to close the dispensing chamber 214. A dispensing shaft 215 is provided inside the dispensing chamber 214. A first driving source 216 is fixedly installed on the hopper cover 213. It can be understood that in this embodiment, the first driving source 216 is specifically a drive motor. The first driving source 216 is connected to the dispensing shaft 215 in a transmission connection. A guide plate 218 and multiple dispensing plates 217 are installed at the end of the dispensing shaft 215 away from the first driving source 216. The guide plate 218 is annular. The dispensing plates 217 are installed on the guide plate 218 and are arranged at intervals around the circumference of the guide plate 218. The dispensing plates 217 divide the dispensing chamber 214 into multiple sub-cavities, each of which corresponds to the discharge pipe 211.

[0045] The first drive source 216 drives the material distribution shaft 215 to rotate, and the material distribution shaft 215 drives the material distribution plate 217 and the guide plate 218 to rotate. Under the rotation of the material distribution plate 217, the polyethylene raw material is discharged from multiple discharge pipes 211, and at the same time, multiple feeding barrels 22 are fed, which helps to improve the feeding efficiency and also helps to avoid the polyethylene raw material from adhering to the inner wall of the barrel 212, which helps to improve the feeding effect.

[0046] Reference Figure 1 and Figure 3 The bottom of the material distribution hopper 21 is equipped with a discharge pipe 219, and the bottom of the discharge pipe 219 is equipped with a discharge hopper 4. When the material distribution hopper 21 stops working, the waste material is discharged from the discharge pipe 219, and the discharge hopper 4 is used to receive the waste material. (Refer to...) Figure 3 and Figure 4 A lifting assembly 5 is installed on the barrel body 212, which is connected to the barrel lid 213. The guide plate 218 can rise and fall with the barrel lid 213 to open and close the discharge pipe 219. Thus, when the dispensing barrel 21 is in the process of feeding, the guide plate 218 closes the discharge pipe 219 to allow the raw material to be discharged from the discharge pipe 219. When feeding is finished or the raw material needs to be replaced, the discharge pipe 219 is opened to allow waste material to be discharged from the discharge pipe 219 and to facilitate cleaning of the barrel body 212.

[0047] Specifically, the lifting assembly 5 includes a second drive source 51 and a telescopic rod 52. The telescopic rod 52 is disposed between the barrel body 212 and the barrel lid 213. One end of the telescopic rod 52 is connected to the barrel body 212, and the other end is connected to the barrel lid 213. A first mounting plate 53 is fixed on the outer wall of the barrel body 212, and the second drive source 51 is fixedly mounted on the first mounting plate 53. In this embodiment, the second drive source 51 is specifically a drive motor. The second drive source 51 is arranged along the axial direction of the barrel body 212. A second mounting plate 54 is fixedly connected to the outer wall of the barrel lid 213, and the second drive source 51 is connected to the second mounting plate 54 in a transmission connection. The second drive source 51 drives the barrel lid 213 to move along the axial direction of the barrel body 212. Multiple telescopic rods 52 are provided and arranged circumferentially along the barrel body 212. The telescopic rods 52 can guide the movement of the barrel lid 213 to achieve stable movement of the barrel lid 213, thereby facilitating the opening and closing of the discharge pipe 219.

[0048] Reference Figure 4 The side wall of the material distribution plate 217 contacts the inner wall of the barrel 212, and the bottom wall of the material distribution plate 217 contacts the inner bottom wall of the barrel 212. Through the contact between the material distribution plate 217 and the inner wall of the barrel 212, the material adhering to the inner wall of the barrel 212 can be cleaned by the rotation of the material distribution plate 217, so as to achieve a better cleaning effect.

[0049] In this embodiment, the guide plate 218 is frustum-shaped and has an inclined surface that slopes towards the discharge pipe 211. By setting the inclined surface, the raw material can move towards the discharge pipe 211, and the raw material can enter the feeding hopper 22 from the distribution hopper 21, thereby minimizing the accumulation of raw material at the bottom of the distribution hopper 21 and improving the utilization rate of the raw material.

[0050] Reference Figure 5 and Figure 6 In some embodiments, a connecting block 25 is provided at the bottom end of the dispensing shaft 215. The connecting block 25 can be fixedly connected to the dispensing shaft 215 by welding. A guide groove 26 is provided on the inner wall of the guide plate 218, and the connecting block 25 is inserted into the guide groove 26. The connecting block 25 is inclined relative to the dispensing shaft 215 towards the side closer to the barrel cover 213, thereby achieving a better connection effect between the dispensing shaft 215 and the guide plate 218.

[0051] Furthermore, the material distribution plate 217 and the guide plate 218 are detachably connected. The outer wall of the guide plate 218 has multiple connecting grooves 27. The material distribution plate 217 is provided with connecting strips (not shown in the figure). The connecting strips are slidably inserted into the connecting grooves 27. A snap-fit ​​block 29 is provided within the connecting groove 27. The connecting strip has a snap-fit ​​groove (not shown in the figure), and the snap-fit ​​block 29 is embedded in the snap-fit ​​groove. Specifically, in this embodiment, the connecting groove 27 is a dovetail groove, and the connecting strip is a dovetail strip. By slidably inserting the connecting strip into the connecting groove 27 and embedding it in the snap-fit ​​groove with the snap-fit ​​block 29, a better connection effect is achieved, and the material distribution plate 217 is easily installed and disassembled, facilitating cleaning.

[0052] Furthermore, refer to Figure 1 In this embodiment, a discharge valve 23 is provided at the discharge pipe 219, which is used to open and close the discharge pipe 219. Each discharge pipe 211 is provided with a discharge valve 24, which is used to open and close the discharge pipe 211. The discharge valves 23 and 24 are independent of each other. By controlling the opening and closing of the discharge valves 24, the amount of material fed into the feeding hopper 22 can be controlled to adapt to various injection molding scenarios. By opening and closing the discharge valves 23, and coordinating with the movement of the lifting assembly 5, the feeding and cleaning modes can be switched easily, making operation convenient and helping to improve production efficiency.

[0053] The implementation principle of this application embodiment is as follows: the raw material enters the storage tank 1 from the feed inlet 12, and is then transported to the distribution tank 21 through the conveying pipe 3. Originally, it is divided into multiple portions in the distribution tank 21, and then enters the discharge valve 23 from multiple discharge pipes 211, and then enters the injection molding machine from the discharge valve 23. This achieves multi-threaded simultaneous feeding, which helps to improve work efficiency. When it is necessary to clean the distribution tank 21, the discharge valve 24 is closed and the discharge valve 23 is opened. The second drive source 51 drives the tank cover 213, guide plate 218 and distribution plate 217 to rise, so that the waste material is discharged from the discharge pipe 219. At the same time, the first drive source 216 drives the distribution plate 217 to rotate, cleaning the inner wall of the tank body 212.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A feeding mechanism for a multi-threaded polyethylene injection molding machine, characterized in that, include: Storage box (1) for storing polyethylene raw materials, the storage box (1) having a storage cavity, a feed inlet (12) and a discharge outlet (13), the storage cavity being connected to the feed inlet (12) and the discharge outlet (13); The material distribution assembly (2) includes a material distribution bucket (21) and a feeding bucket (22). The bottom of the material distribution bucket (21) is provided with multiple discharge pipes (211), and the bottom of the discharge pipes (211) is provided with multiple feeding buckets (22). Each feeding bucket (22) corresponds to the discharge pipe (211), and each feeding bucket (22) is connected to an injection molding machine. A conveying pipe (3) is provided between the storage tank (1) and the distribution bucket (21). One end of the conveying pipe (3) is connected to the storage tank (1), and the other end is connected to the distribution bucket (21). The conveying pipe (3) is used to transport the polyethylene raw material from the storage tank (1) to the distribution bucket (21).

2. The feeding mechanism for a multi-threaded polyethylene injection molding machine according to claim 1, characterized in that: The dispensing hopper (21) includes a hopper body (212) and a hopper lid (213). A dispensing chamber (214) is provided inside the hopper body (212). The hopper lid (213) is installed on the hopper body (212) and is used to close the dispensing chamber (214). A dispensing shaft (215) is provided inside the dispensing chamber (214). A first driving source (216) is provided on the hopper lid (213). The dispensing shaft (215) and the first driving source (216) are connected. 6) Transmission connection: The end of the material distribution shaft (215) away from the first drive source (216) is provided with a guide plate (218) and multiple material distribution plates (217). The guide plate (218) is annular. The material distribution plates (217) are connected to the guide plate (218) and are arranged at intervals around the guide plate (218). The material distribution plates (217) divide the material distribution cavity (214) into multiple sub-cavities. Each sub-cavity corresponds to the discharge pipe (211).

3. The feeding mechanism of a multi-threaded polyethylene injection molding machine according to claim 2, characterized in that: The bottom of the dispensing hopper (21) is provided with a discharge pipe (219), and the bottom of the discharge pipe (219) is provided with a discharge hopper (4). The guide plate (218) is used to close the discharge pipe (219). The hopper body (212) is provided with a lifting assembly (5). The lifting assembly (5) is connected to the hopper lid (213). The guide plate (218) moves up and down with the hopper lid (213) to realize the opening and closing of the discharge pipe (219).

4. The feeding mechanism for a multi-threaded polyethylene injection molding machine according to claim 3, characterized in that: The lifting assembly (5) includes a second drive source (51) and a telescopic rod (52). The telescopic rod (52) is disposed between the barrel body (212) and the barrel lid (213). A first mounting plate (53) is disposed on the outer wall of the barrel body (212). The second drive source (51) is mounted on the first mounting plate (53). The second drive source (51) is disposed along the axial direction of the barrel body (212). A second mounting plate (54) is connected to the outer wall of the barrel lid (213). The second drive source (51) and the second mounting plate (54) are connected in a transmission manner so that the barrel lid (213) moves along the axial direction of the barrel body (212).

5. The feeding mechanism for a multi-threaded polyethylene injection molding machine according to claim 2, characterized in that: The guide plate (218) has an inclined surface that is inclined toward the discharge pipe (211).

6. The feeding mechanism for a multi-threaded polyethylene injection molding machine according to claim 3, characterized in that: A discharge valve (23) is provided at the discharge pipe (219), and the discharge valve (23) is used to open and close the discharge pipe (219). A discharge valve (24) is provided on each discharge pipe (211), and the discharge valve (24) is used to open and close the discharge pipe (211). The discharge valve (23) and each discharge valve (24) are independent of each other.

7. The feeding mechanism for a multi-threaded polyethylene injection molding machine according to claim 2, characterized in that: The side wall of the material distribution plate (217) is in contact with the inner wall of the barrel (212), and the bottom wall of the material distribution plate (217) is in contact with the inner bottom wall of the barrel (212).

8. The feeding mechanism of a multi-threaded polyethylene injection molding machine according to claim 2, characterized in that: A connecting block (25) is provided on the material distribution shaft (215), and a guide groove (26) is provided on the inner wall of the guide plate (218), and the connecting block (25) is inserted into the guide groove (26).

9. The feeding mechanism of a multi-threaded polyethylene injection molding machine according to claim 2, characterized in that: The material distribution plate (217) is detachably connected to the guide plate (218). The outer wall of the guide plate (218) has multiple connecting grooves (27). The material distribution plate (217) is provided with a connecting strip. The connecting strip is slidably inserted into the connecting groove (27). The connecting groove (27) is provided with a snap-fit ​​block (29). The connecting strip is provided with a snap-fit ​​groove. The snap-fit ​​block (29) is embedded in the snap-fit ​​groove.

10. A multi-threaded polyethylene injection molding apparatus, characterized in that, Includes the feeding mechanism of a multi-threaded polyethylene production injection molding machine as described in any one of claims 1-9.

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