Feeding device of injection molding equipment

Abstract

The utility model discloses a feeding device of injection molding equipment, which comprises a temporary storage bin, the input end of the temporary storage bin is communicated with a raw material bin, the output end of the temporary storage bin is communicated with an injection molding machine, and the temporary storage bin is communicated with an air exhaust blowing assembly. And the air exhaust and material blowing assembly can exhaust air and suck material particles in the raw material bin into the temporary storage bin, and the air exhaust and material blowing assembly can blow air and blow the material particles in the raw material bin into the injection molding machine. According to the feeding device for the injection molding machine, the air exhaust and material blowing assembly is communicated with the temporary storage bin, material particles in the raw material bin can be sucked into the temporary storage bin during air exhaust, material supplementing is conducted on the temporary storage bin, the material particles in the temporary storage bin can be blown into a discharging hopper of the injection molding machine along a pipeline during air blowing, and stable discharging is conducted on the injection molding machine. The state that the particles are input into and output from the temporary storage bin can be changed only by adjusting the air exhausting and blowing states of the air exhausting and blowing assembly and adjusting opening and closing of the valves at the input end and the output end of the particles of the temporary storage bin in a matched mode.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a feeding device for injection molding equipment. Background Technology

[0002] The temporary storage hopper of an injection molding machine is used to store and supply the raw materials required for the injection molding process, ensuring a stable and continuous supply of raw materials to the machine during processing. Material is typically added to the hopper manually, requiring constant monitoring and replenishment. Existing technology, patent number CN113400579A, discloses a feeding device for injection molding equipment. This device uses a feeding hopper and a storage hopper. When feeding is needed, a suction fan is activated to create negative pressure inside the feeding hopper. A suction gun then draws the raw material from the storage hopper into the feeding hopper through a feeding pipe, thus completing the feeding process. However, this device does not address the problem of how to stably and continuously deliver the material particles from the feeding hopper to the injection molding equipment. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems mentioned above, and provides a feeding device for injection molding equipment, which can realize the input and output functions of granules through the air blowing component, and ensure stable transportation of granules to the injection molding machine.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A feeding device for an injection molding machine includes a temporary storage bin, an input end of which is connected to a raw material bin, an output end of which is connected to an injection molding machine, and an air extraction and blowing assembly connected to the temporary storage bin. The air extraction and blowing assembly can extract air and draw material particles from the raw material bin into the temporary storage bin, and can also blow air and blow the material particles from the raw material bin into the injection molding machine.

[0006] As an improvement to the above technical solution, the vacuum blowing assembly includes a blower, a discharge pipe is connected to the bottom of the temporary storage hopper, a vacuum blowing pipe is connected to the blower, the output end of the discharge pipe is connected to the vacuum blowing pipe, and the output end of the vacuum blowing pipe is connected to the injection molding machine.

[0007] As an improvement to the above technical solution, a first material blocking mesh is provided inside the end of the exhaust blowing pipe near the blower.

[0008] As an improvement to the above technical solution, an air extraction pipe is connected to the air extraction and blowing pipe, the output end of the air extraction pipe is connected to the top of the temporary storage bin, and a second material blocking net is provided inside the air extraction pipe.

[0009] As an improvement to the above technical solution, a guide baffle is provided inside the temporary storage bin and at the output end of the exhaust pipe.

[0010] As an improvement to the above technical solution, the output end of the raw material silo is connected to the input end of the top of the temporary storage silo through a material conveying pipe. The material conveying pipe is equipped with a first valve, and the end of the suction blowing pipe near the injection molding machine is equipped with a second valve.

[0011] As an improvement to the above technical solution, a control cabinet is also included. The control cabinet is equipped with a central processing unit and a signal acquisition unit. The temporary storage hopper is equipped with a material level sensor. The signal acquisition unit can receive the material level value signal output by the material level sensor. The central processing unit has a preset material level threshold. The central processing unit can compare the real-time material level value with the material level threshold and control the opening and closing of the first valve and the second valve, as well as the suction or blowing of the blower, according to the comparison result.

[0012] As an improvement to the above technical solution, a stirring shaft is rotatably installed inside the temporary storage hopper, and a stirring motor with its drive end connected to the stirring shaft is provided on the temporary storage hopper.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] This utility model discloses a feeding device for injection molding equipment. By connecting an air extraction and blowing assembly to a temporary storage hopper, air extraction draws material granules from the raw material hopper into the temporary storage hopper to replenish it. Air blowing propels the granules from the temporary storage hopper along a pipe to the injection molding machine's discharge hopper, ensuring stable material feeding. The input and output states of the material granules in and out of the temporary storage hopper can be changed simply by adjusting the air extraction and blowing states of the assembly, along with the opening and closing of the valves at the input and output ends of the granules in the temporary storage hopper. The device is simple in structure and operation, reducing manual labor. Attached Figure Description

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;

[0018] Figure 3 This is a partial structural diagram of an embodiment of the present utility model. Figure 1 ;

[0019] Figure 4 This is a partial structural diagram of an embodiment of the present utility model. Figure 2 . Detailed Implementation

[0020] 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.

[0021] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figures 1 to 4 As shown, this utility model provides a feeding device for an injection molding machine, including a temporary storage bin 10. The input end of the temporary storage bin 10 is connected to a raw material bin 20, and the output end of the temporary storage bin 10 is connected to an injection molding machine 30. An air extraction and blowing assembly 40 is connected to the temporary storage bin 10. The air extraction and blowing assembly 40 can extract air and draw material particles from the raw material bin 20 into the temporary storage bin 10, and can also blow air and deliver the material particles from the raw material bin 20 into the injection molding machine 30. Multiple raw material bins 20 can be provided, each connected to the top of the temporary storage bin 10 via a conveying hose; multiple discharge hoses can also be provided at the output end of the temporary storage bin 10, each connected to multiple discharge hoppers of the injection molding machine 30.

[0024] See Figure 1 and Figure 3In one specific embodiment of this application, the suction blowing assembly 40 includes a blower 41, a discharge pipe 11 is connected to the bottom of the temporary storage hopper 10, a suction blowing pipe 42 is connected to the blower 41, the output end of the discharge pipe 11 is connected to the suction blowing pipe 42, and the output end of the suction blowing pipe 42 is connected to the injection molding machine 30. The discharge end of the suction blowing pipe 42 can be connected to multiple hoppers of the injection molding machine 30 via multiple conveying hoses. After the material particles in the temporary storage hopper 10 fall into the discharge pipe 11, the blower 41 blows air to blow the material particles along the discharge end of the suction blowing pipe 42 and the conveying hoses to the injection molding machine 30. When the blower 41 suctions air, a negative pressure is generated inside the temporary storage hopper 10, causing the material particles in the raw material hopper 20 to be sucked into the temporary storage hopper 10. Furthermore, to prevent material particles from being sucked into the blower 41 during air extraction, a first material blocking net 43 is provided inside the end of the air extraction and blowing pipe 42 near the blower 41, which can intercept material particles during air extraction.

[0025] See further Figure 4 In another specific embodiment of this application, since the blower 41 is connected to the bottom of the temporary storage silo 10, the material particles located at the bottom of the temporary storage silo 10 can easily affect the suction efficiency when the blower 41 is pumping air. An suction pipe 44 is connected to the suction and blowing pipe 42, and the output end of the suction pipe 44 is connected to the top of the temporary storage silo 10. A second material blocking mesh 45 is provided inside the suction pipe 44. By setting the suction pipe 44 to directly connect to the top of the temporary storage silo 10, and by installing control valves on the suction pipe 44 and the suction and blowing pipe 42 to perform suction and blowing respectively without affecting each other, the efficiency of material suction and discharge is improved. Furthermore, a guide baffle 46 is provided inside the temporary storage silo 10 at the output end of the suction pipe 44.

[0026] In a specific embodiment of this application, the output end of the raw material silo 20 is connected to the input end at the top of the temporary storage silo 10 via a conveying pipe 21. A first valve 22 is provided on the conveying pipe 21, and a second valve 47 is provided on the end of the suction blowing pipe 42 near the injection molding machine 30. The first valve 22 and the second valve 47 can be one-way valves; the first valve 22 is a one-way input valve, and the second valve 47 is a one-way output valve. Alternatively, electrically controlled valves can also be used.

[0027] See Figure 2To achieve automatic adjustment and control of the input and output states of the material particles, a control cabinet 50 is also included. The control cabinet 50 contains a central processing unit and a signal acquisition unit. A level sensor 12 is installed in the temporary storage hopper 10. The signal acquisition unit can receive the level signal output by the level sensor 12. The central processing unit has a preset level threshold. The central processing unit can compare the real-time level value with the level threshold and control the opening and closing of the first valve 22 and the second valve 47, as well as the suction or blowing of the blower 41, based on the comparison result. The central processing unit and the signal acquisition unit both employ existing technology. The level sensor 12 may include a high-level sensor located at the upper end and a low-level sensor located at the lower end of the temporary storage hopper 10. When the height of the material particles in the temporary storage bin 10 is lower than that of the low-level sensor, the central processing unit controls the first valve 22 to open and the second valve 47 to close, and adjusts the blower 41 to the suction function to draw in material particles for replenishment; when the height of the material particles in the temporary storage bin 10 is higher than that of the high-level sensor, the central processing unit controls the first valve 22 to close and the second valve 47 to open, and adjusts the blower 41 to the blowing function to blow the material particles to the injection molding machine 30.

[0028] In addition, since there may be various types of material particles inside the temporary storage bin 10, a stirring shaft 13 is rotatably installed inside the temporary storage bin 10 to facilitate mixing. The temporary storage bin 10 is equipped with a stirring motor 14 whose drive end is connected to the stirring shaft 13.

[0029] This utility model discloses a feeding device for injection molding equipment. By connecting the suction and blowing assembly 40 to the temporary storage bin 10, suction draws material granules from the raw material bin 20 into the temporary storage bin 10 to replenish it. Blowing blows material granules from the temporary storage bin 10 along a pipeline to the discharge hopper of the injection molding machine 30 for stable material feeding. The input and output states of the temporary storage bin 10 can be changed simply by adjusting the suction and blowing states of the suction and blowing assembly 40, along with adjusting the opening and closing of the input and output valves of the material granules in the temporary storage bin 10. The device is simple in structure and operation, reducing manual labor.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.

Claims

1. A feeding device for injection molding equipment, characterized in that, It includes a temporary storage hopper, the input end of which is connected to a raw material hopper, the output end of which is connected to an injection molding machine, and an air extraction and blowing assembly connected to the temporary storage hopper. The air extraction and blowing assembly can extract air and suck the material particles in the raw material hopper into the temporary storage hopper, and the air extraction and blowing assembly can blow air and blow the material particles in the raw material hopper into the injection molding machine.

2. The feeding device for an injection molding equipment according to claim 1, characterized in that, The vacuum blowing assembly includes a blower, a discharge pipe is connected to the bottom of the temporary storage hopper, a vacuum blowing pipe is connected to the blower, the output end of the discharge pipe is connected to the vacuum blowing pipe, and the output end of the vacuum blowing pipe is connected to the injection molding machine.

3. The feeding device for an injection molding equipment according to claim 2, characterized in that, The exhaust blowing pipe has a first material blocking screen inside the end near the blower.

4. The feeding device for an injection molding equipment according to claim 2, characterized in that, The exhaust blowing pipe is connected to an exhaust pipe, the output end of which is connected to the top of the temporary storage bin, and a second material blocking net is provided inside the exhaust pipe.

5. The feeding device for an injection molding equipment according to claim 4, characterized in that, The temporary storage bin is equipped with a guide baffle located inside the air extraction pipe outlet.

6. The feeding device for an injection molding equipment according to claim 2, characterized in that, The output end of the raw material silo is connected to the input end at the top of the temporary storage silo through a material conveying pipe. A first valve is provided on the material conveying pipe, and a second valve is provided on the end of the suction blowing pipe near the injection molding machine.

7. The feeding device for an injection molding equipment according to claim 6, characterized in that, It also includes a control cabinet, which is equipped with a central processing unit and a signal acquisition unit. The temporary storage hopper is equipped with a material level sensor. The signal acquisition unit can receive the material level value signal output by the material level sensor. The central processing unit has a preset material level threshold. The central processing unit can compare the real-time material level value with the material level threshold and control the opening and closing of the first valve and the second valve, as well as the suction or blowing of the blower, according to the comparison result.

8. The feeding device for an injection molding equipment according to claim 1, characterized in that, A stirring shaft is rotatably installed inside the temporary storage hopper, and a stirring motor with its drive end connected to the stirring shaft is provided on the temporary storage hopper.

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