Central feeding device of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and discloses a central feeding device of an injection molding machine, which comprises a plurality of injection molding machines, a stirring device, a vacuum feeding device and a plurality of material collecting barrels, the lower ends of the plurality of material collecting barrels are provided with first electromagnetic valves, and the lower ends of the plurality of first electromagnetic valves are connected with the same material conveying pipe; the end of the material conveying pipe is connected to the feeding end of the vacuum feeding device, the discharging end of the vacuum feeding device is connected with a discharging pipe, the end of the discharging pipe is connected to the feeding end of the stirring device, the discharging end of the stirring device is connected with a main feeding pipe, and a material barrel of the injection molding machine is connected with a feeding pipe. By arranging the stirring device, the vacuum feeding device and the multiple material collecting barrels, materials can be supplied into the injection molding machine needing to be supplied, the problem that an existing feeding mode is complex is solved, the feeding difficulty is reduced, the feeding efficiency is improved, and the feeding efficiency is improved. And meanwhile, the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to a central feeding device for injection molding machines. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection machines, are often called "pig machines" in factories. Injection-molded products are called "pig parts." They are the main molding equipment that uses plastic molds to make various shapes of plastic products from thermoplastic or thermosetting materials. When using an injection molding machine, granular or powdered plastic is first added to the barrel. The outer wall of the barrel is heated by the spiral rotation to melt the plastic. Under the push of the screw (or plunger), the molten plastic (i.e., in a viscous flow state) is injected into the closed injection cavity and then solidified.

[0003] Currently, during the injection molding process, as production progresses, the injection molding raw materials are continuously consumed, thus requiring the addition of new injection molding raw materials. If the material is added manually, the efficiency is low and the labor intensity is high. Generally speaking, in order to facilitate the material addition, each injection molding machine is matched with a feeding device. After the operator puts the injection molding raw materials into the feeding device, the feeding device intermittently supplies material to the injection molding machine.

[0004] In the above scheme, as production progresses, it is still necessary to replenish the material into the feeding device. Therefore, during injection molding production, staff need to monitor the remaining material of each injection molding machine at all times in order to replenish the material in a timely manner. The whole process is quite cumbersome. In addition, with multiple injection molding machines in the workshop, the space covered is large, resulting in a long transportation distance for injection molding raw materials, which further increases the difficulty of replenishing the material. At the same time, each injection molding machine is matched with a feeding device, resulting in high production costs. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a central feeding device for injection molding machines. By equipping the device with a stirring device, a vacuum feeding device and multiple material collection bins, it can feed materials into the injection molding machine that needs to be fed, thus solving the problem of the cumbersome feeding method in the existing method, reducing the difficulty of feeding materials, and reducing production costs.

[0006] The solution of this utility model to the aforementioned technical problem is:

[0007] A central feeding device for injection molding machines includes multiple injection molding machines, a mixing device, a vacuum feeding device, and multiple collection bins. A first solenoid valve is installed at the lower end of each collection bin. The lower ends of the multiple first solenoid valves are connected to the same conveying pipe. The end of the conveying pipe is connected to the inlet end of the vacuum feeding device. A discharge pipe is connected to the outlet end of the vacuum feeding device, and the end of the discharge pipe is connected to the inlet end of the mixing device. A main feeding pipe is connected to the outlet end of the mixing device. Inlet pipes are connected to the material bins of the injection molding machines. The ends of multiple inlet pipes are connected to the side wall of the same main feeding pipe. A second solenoid valve is installed on the side wall of the inlet pipe, located on the side of the inlet pipe closest to the main feeding pipe.

[0008] When it is necessary to feed materials into the injection molding machine, the various required injection molding materials are poured into multiple collection bins. According to the requirements, multiple first solenoid valves are opened and the vacuum feeding device is started, so that the various required injection molding materials pass through the conveying pipe and the discharge pipe in sequence and enter the mixing device. The mixing device is started to mix the various injection molding materials. After the various injection molding materials are mixed, the injection molding materials are output through the main feeding pipe. The second solenoid valve corresponding to the injection molding machine to be fed is opened, so that the injection molding materials enter the material bin of the injection molding machine to be fed through the feeding pipe, thereby completing the feeding of the injection molding machine.

[0009] By incorporating a stirring device, a vacuum feeding device, and multiple material collection bins, materials can be supplied to the injection molding machine that requires them, solving the problem of the cumbersome nature of existing material supply methods, reducing the difficulty of material supply, and lowering production costs.

[0010] The utility model is further configured such that a transparent observation pipe is installed on the side wall of the feed pipe, and the observation pipe is located on the side of the feed pipe closer to the injection molding machine.

[0011] The above technical solution allows for real-time monitoring of whether injection molding raw materials are entering the corresponding injection molding machine's hopper, as well as whether there is any blockage in the feed pipe.

[0012] The utility model is further configured such that a third solenoid valve is installed on the side wall of the feed pipe, and the third solenoid valve is located on the side of the feed pipe closer to the injection molding machine.

[0013] With the above technical solution, by setting up a backup third solenoid valve, if the second solenoid valve fails due to long-term use, the third solenoid valve can be activated in time to control whether the injection molding material is output.

[0014] The utility model is further configured such that two vacuum feeding devices are provided.

[0015] The above technical solution improves the fault tolerance of this utility model and prevents the problem of being unable to supply materials to multiple injection molding machines due to malfunction of the vacuum feeding device.

[0016] The utility model is further configured such that an ultrasonic level detector is installed at the upper end of the material hopper.

[0017] The above technical solution allows for real-time detection of the remaining amount of injection molding material in the barrel, facilitating timely addition of injection molding material to the barrel.

[0018] The beneficial effects of this utility model are:

[0019] Compared with existing technologies, by incorporating a stirring device, a vacuum feeding device, and multiple collection bins, materials can be supplied to the injection molding machine that requires material, solving the problem of the cumbersome nature of existing material supply methods, reducing the difficulty of material supply, and lowering production costs.

[0020] By installing observation pipes, it is possible to observe whether injection molding raw materials are entering the material barrel, and at the same time, whether there is any blockage in the feed pipe.

[0021] The presence of an ultrasonic level detector facilitates the timely addition of injection molding materials to the hopper. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a front view of the present invention with multiple injection molding machines removed;

[0024] Figure 3 for Figure 1 Enlarged view of A;

[0025] Figure 4 for Figure 1 A magnified view of B.

[0026] Reference numerals in the attached drawings: 1. Injection molding machine; 101. Material hopper; 2. Mixing device; 3. Vacuum feeding device; 4. Collection hopper; 5. First solenoid valve; 6. Conveying pipe; 7. Discharge pipe; 8. Main feeding pipe; 9. Feed pipe; 10. Second solenoid valve; 11. Observation pipe; 12. Third solenoid valve; 13. Ultrasonic level detector. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] The following is for reference Figures 1 to 4 This utility model will now be described.

[0029] A central feeding device for injection molding machines includes multiple injection molding machines 1, a mixing device 2, a vacuum feeding device 3, and multiple collection bins 4. A first solenoid valve 5 is installed at the lower end of each collection bin 4. The lower ends of the multiple first solenoid valves 5 are connected to the same conveying pipe 6. The end of the conveying pipe 6 is connected to the inlet end of the vacuum feeding device 3. A discharge pipe 7 is connected to the outlet end of the vacuum feeding device 3. The end of the discharge pipe 7 is connected to the inlet end of the mixing device 2. A main feeding pipe 8 is connected to the outlet end of the mixing device 2. A feeding pipe 9 is connected to the material bin 101 of the injection molding machine 1. The ends of multiple feeding pipes 9 are connected to the side wall of the same main feeding pipe 8. A second solenoid valve 10 is installed on the side wall of the feeding pipe 9, located on the side of the feeding pipe 9 closest to the main feeding pipe 8.

[0030] When it is necessary to feed materials into the injection molding machine 1, the various required injection molding materials are poured into multiple collection bins 4 respectively. Multiple first solenoid valves 5 are opened as needed, and the vacuum feeding device 3 is started, so that the various required injection molding materials pass through the conveying pipe 6 and the discharge pipe 7 in sequence and enter the mixing device 2. The mixing device 2 is started to mix the various injection molding materials. After the various injection molding materials are mixed, the injection molding materials are output through the feeding main pipe 8, and the second solenoid valve 10 corresponding to the injection molding machine 1 to be fed is opened, so that the injection molding materials enter the material bin 101 of the injection molding machine 1 to be fed through the feeding pipe 9, thereby completing the feeding of the injection molding machine 1.

[0031] By incorporating a stirring device 2, a vacuum feeding device 3, and multiple material collection bins 4, materials can be supplied to the injection molding machine 1 that requires material, thus solving the problem of the cumbersome existing material supply method, reducing the difficulty of material supply, and lowering production costs.

[0032] A transparent observation pipe 11 is installed on the side wall of the feed pipe 9, and the observation pipe 11 is located on the side of the feed pipe 9 closest to the injection molding machine 1.

[0033] It is possible to observe at any time whether there is any injection molding material entering the corresponding injection molding machine 1's hopper 101, and at the same time, it is possible to observe whether there is any blockage in the feed pipe 9.

[0034] A third solenoid valve 12 is installed on the side wall of the feed pipe 9, and the third solenoid valve 12 is located on the side of the feed pipe 9 closer to the injection molding machine 1.

[0035] By providing a backup third solenoid valve 12, if the second solenoid valve 10 fails due to prolonged use, the third solenoid valve 12 can be activated in a timely manner to control whether the injection molding material is output.

[0036] Two vacuum feeding devices 3 are provided.

[0037] This improves the fault tolerance of the present invention and prevents the problem of being unable to supply materials to multiple injection molding machines 1 due to malfunction of the vacuum feeding device 3.

[0038] An ultrasonic level detector 13 is installed at the upper end of the material hopper 101.

[0039] The remaining amount of injection molding material in the material tank 101 can be detected in real time, which makes it convenient to add injection molding material to the material tank 101 in a timely manner.

[0040] Working principle:

[0041] When it is necessary to feed materials into the injection molding machine 1, the various required injection molding materials are poured into multiple collection bins 4 respectively. Multiple first solenoid valves 5 are opened as needed, and the vacuum feeding device 3 is started, so that the various required injection molding materials pass through the conveying pipe 6 and the discharge pipe 7 in sequence and enter the mixing device 2. The mixing device 2 is started to mix the various injection molding materials. After the various injection molding materials are mixed, the injection molding materials are output through the feeding main pipe 8, and the second solenoid valve 10 corresponding to the injection molding machine 1 to be fed is opened, so that the injection molding materials enter the material bin 101 of the injection molding machine 1 to be fed through the feeding pipe 9, thereby completing the feeding of the injection molding machine 1.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A central feeding device for injection molding machines, comprising multiple injection molding machines (1), a mixing device (2), a vacuum feeding device (3), and multiple collecting bins (4), characterized in that: Multiple collection buckets (4) are equipped with first solenoid valves (5) at their lower ends. The lower ends of multiple first solenoid valves (5) are connected to the same conveying pipe (6). The end of the conveying pipe (6) is connected to the inlet end of the vacuum feeding device (3). The outlet end of the vacuum feeding device (3) is connected to the outlet pipe (7). The end of the outlet pipe (7) is connected to the inlet end of the mixing device (2). The outlet end of the mixing device (2) is connected to the main feeding pipe (8). The material bucket (101) of the injection molding machine (1) is connected to the inlet pipe (9). The ends of multiple inlet pipes (9) are connected to the side wall of the same main feeding pipe (8). A second solenoid valve (10) is installed on the side wall of the inlet pipe (9). The second solenoid valve (10) is located on the side of the inlet pipe (9) close to the main feeding pipe (8).

2. The central feeding device for an injection molding machine according to claim 1, characterized in that: A transparent observation pipe (11) is installed on the side wall of the feed pipe (9), and the observation pipe (11) is located on the side of the feed pipe (9) close to the injection molding machine (1).

3. The central feeding device for an injection molding machine according to claim 1, characterized in that: A third solenoid valve (12) is installed on the side wall of the feed pipe (9), and the third solenoid valve (12) is located on the side of the feed pipe (9) close to the injection molding machine (1).

4. The central feeding device for an injection molding machine according to claim 1, characterized in that: Two vacuum feeding devices (3) are provided.

5. A central feeding device for an injection molding machine according to claim 1, characterized in that: An ultrasonic level detector (13) is installed at the top of the material hopper (101).

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