Edge auxiliary automatic feeding equipment of injection machine

Abstract

The utility model discloses side auxiliary automatic feeding equipment of an injection machine, which relates to the technical field of material conveying and comprises an injection machine hopper, the air outlet end of the injection machine hopper is communicated with a negative pressure control structure, the negative pressure control structure is communicated with a vacuum hopper, and the feeding end of the vacuum hopper is provided with a crusher. A first valve body is fixedly connected to the discharging end of the vacuum hopper, a raw material box is fixedly communicated with the bottom of the first valve body, a second material guiding pipeline is fixedly connected between the discharging end of the raw material box and the normally-closed feeding end of the injection machine hopper, and a dredging assembly is installed at the bottom of the outer side of the raw material box. And the labor cost input required for recycling the drainage opening materials and the frequency of mixing errors caused by untimely recycling are reduced, the small particles are quickly and efficiently conveyed into the raw material box to be stored, workers do not need to make contact with the drainage opening materials and climb high in the process, and the safety of the workers is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, specifically an auxiliary automatic feeding device for an injection molding machine. Background Technology

[0002] In the injection molding process, sprue material (also known as recycled material or gating system sprue) refers to the sprue and runner molding material outside the product. It is a type of waste material from production or recycled material after crushing unqualified products.

[0003] After injection molding, the sprue material produced is automatically dropped into the material collection box below the equipment after being ejected by the mold stripper plate or picked up by the robot. It needs to be collected by staff and transported to a designated area (shredding workshop) by a trolley. Dust is generated during the shredding process, so staff must wear dust masks to ensure their safety. After shredding, staff need to pull out the material collection box below the shredder, pour the crushed material into the raw material bucket, and then use a trolley to pull the filled raw material bucket back to the injection molding machine. Staff need to carry the raw material bucket by hand and climb a ladder to add material, which is somewhat dangerous. In addition, the manual operation during the material addition process generates dust, which also requires staff to wear dust masks, which can easily cause discomfort to staff and further reduce the work speed. Utility Model Content

[0004] The purpose of this invention is to provide an automatic feeding device for injection molding machines to solve the problems mentioned in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic feeding device for an injection molding machine, comprising an injection molding machine hopper, wherein the air outlet of the injection molding machine hopper is connected to a negative pressure control structure, the negative pressure control structure is connected to a vacuum hopper, a crusher is provided at the feed end of the vacuum hopper, a valve body is fixedly connected to the discharge end of the vacuum hopper, a raw material box is fixedly connected to the bottom of the valve body, a guide pipe is fixedly connected between the discharge end of the raw material box and the normally closed feed end of the injection molding machine hopper, and a dredging component is installed at the bottom of the outer side of the raw material box.

[0006] Preferably, a guide pipe is fixedly installed at the normally open feed end of the injection molding machine hopper, and a gate valve is fixedly connected to the bottom of the discharge end of the injection molding machine hopper.

[0007] Preferably, the negative pressure control structure includes a support frame three, a vacuum pump fixedly installed inside the support frame three, an air extraction pipe fixedly connected to the air inlet end of the vacuum pump one, and a negative pressure tank fixedly connected to one end of the air extraction pipe one, wherein the negative pressure tank is fixedly installed inside the support frame three.

[0008] Preferably, valve bodies are fixedly connected to both sides of the negative pressure tank, and air extraction pipes are fixedly connected to one side of each of the two valve bodies. One end of one air extraction pipe is fixedly connected to the air outlet of the injection molding machine hopper, and the other air extraction pipe is fixedly connected to the air outlet of the vacuum hopper.

[0009] Preferably, a material guide pipe is fixedly connected between the feed end of the vacuum hopper and the discharge end of the crusher, and a support frame is fixedly installed on the outside of the crusher.

[0010] Preferably, the unblocking component includes a pressure box fixedly sleeved on the bottom of the outer side of the raw material box, a valve body three fixedly connected to the outer side of the pressure box, and an exhaust pipe. The exhaust pipe is fixedly connected to the exhaust end of the vacuum pump. A support frame two is fixedly installed on the outer side of the raw material box one, and the support frame two is fixedly connected to the ground, so that the raw material box cannot move.

[0011] Preferably, the outer side of the raw material box is provided with multiple vent holes, each of which is provided with an elastic sheet. The elastic sheet is fixedly connected to the raw material box. A second vent is provided on one side of each vent hole and is located on the pressure box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When this application is used, a negative pressure is generated inside the vacuum hopper and the material guide pipe connected to the vacuum hopper. The small particles processed by the crusher are drawn into the vacuum hopper, and the filter structure inside the vacuum hopper intercepts the small particles. When the crusher finishes one cycle, the vacuum pump stops working, the valve opens, and the small particles fall into the raw material box for storage. The sprue material can be directly collected and crushed into small particles, reducing the labor cost required for sprue material recycling and the number of mixing errors caused by untimely recycling. The small particles are quickly and efficiently transported to the raw material box for storage. During the process, the staff does not need to touch the sprue material or climb, ensuring the safety of the staff.

[0014] 2. When this application is used, the control valve body three is closed. As the internal air pressure of the vacuum pump working pressure box increases, the elastic plate inside the exhaust port one is fixedly connected to the raw material box, so the thrust on the elastic plate increases. As the working time of the vacuum pump increases, the elastic plate deforms and pushes the material at the bottom of the inner cavity of the raw material box. The multiple elastic plates that are staggered require different air pressures to deform. The deformation of multiple elastic plates plays a role in guiding the bottom of the inner cavity of the raw material box, avoiding the blockage of the material box outlet end. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2This is a schematic diagram of the structure of the raw material box of this utility model;

[0017] Figure 3 This is a schematic diagram of the pressure tank structure of this utility model;

[0018] Figure 4 This is a cross-sectional view of the pressure tank of this utility model.

[0019] The following are the labels in the diagram: 1. Support frame one; 2. Crusher; 3. Feed pipe one; 4. Vacuum hopper; 5. Valve body one; 6. Raw material box; 7. Support frame two; 8. Feed pipe two; 9. Support frame three; 10. Vacuum pump; 11. Evacuation pipe one; 12. Negative pressure tank; 13. Valve body two; 14. Evacuation pipe two; 15. Injection machine hopper; 16. Gate valve; 17. Feed pipe three; 18. Exhaust pipe; 19. Pressure tank; 20. Valve body three; 21. Exhaust port one; 22. Elastic sheet; 23. Exhaust port two. 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] Example: Figures 1-4 As shown, this utility model provides a technical solution for an automatic feeding device for an injection molding machine, including an injection molding machine hopper 15. The air outlet of the injection molding machine hopper 15 is connected to a negative pressure control structure, and the negative pressure control structure is connected to a vacuum hopper 4. A crusher 2 is installed at the feed end of the vacuum hopper 4. A valve body 5 is fixedly connected to the discharge end of the vacuum hopper 4. A raw material box 6 is fixedly connected to the bottom of the valve body 5. A guide pipe 8 is fixedly connected between the discharge end of the raw material box 6 and the normally closed feed end of the injection molding machine hopper 15. A dredging component is installed on the bottom of the outer side of the raw material box 6.

[0022] Specifically, a guide pipe 17 is fixedly installed on the normally open feed end of the injection molding machine hopper 15 for conveying raw materials into the injection molding machine hopper 15 under normal conditions. A gate valve 16 is fixedly connected to the bottom of the discharge end of the injection molding machine hopper 15 to control the opening and closing of the gate valve 16 so that the injection molding machine hopper 15 can perform raw material injection.

[0023] In the negative pressure control structure, support frame 39 is fixed to the ground. The air inlet of vacuum pump 10, which is fixedly installed inside support frame 39, is fixedly connected to suction pipe 11. One end of suction pipe 11 is fixedly connected to negative pressure tank 12. Negative pressure tank 12 is fixedly installed inside support frame 39 and cannot move. The setting of negative pressure tank 12 increases the number of structures that suction pipe 11 can connect to.

[0024] Valve bodies 13 are fixedly connected to both sides of the negative pressure tank 12. Each valve body 13 is fixedly connected to one side of a vacuum pipe 14. One end of one vacuum pipe 14 is fixedly connected to the air outlet of the injection molding machine hopper 15, so that the inside of the injection molding machine hopper 15 can be evacuated. The other vacuum pipe 14 is fixedly connected to the air outlet of the vacuum hopper 4, so that the inside of the vacuum hopper 4 can be evacuated.

[0025] A guide pipe 3 is fixedly connected between the feed end of the vacuum hopper 4 and the discharge end of the crusher 2. A support frame 1 is fixedly installed on the outside of the crusher 2 and is fixed to the ground, so the crusher 2 cannot move. The sprue material is fed into the crusher 2 by a mechanical arm set on one side of the injection molding machine. The working crusher 2 crushes the sprue material into small particles. During the operation of the crusher 2, the vacuum pump 10 works to draw air from the inside of the negative pressure tank 12 through the suction pipe 11, and the valve body 13 connected to the vacuum hopper 4 is opened. At this time, a negative pressure is generated inside the vacuum hopper 4. The guide pipe 3 is fixedly connected to the vacuum hopper 4. The internal negative pressure draws the small particles produced by the crusher 2 into the vacuum hopper 4, where the filter structure traps them. Once the crusher 2 has finished its work, the vacuum pump 10 stops, the valve 5 opens, and the small particles fall into the raw material box 6 for storage. This allows for the direct collection and crushing of sprue material into small particles, reducing the labor costs associated with sprue material recycling and minimizing the number of mixing errors caused by untimely recycling. Furthermore, the small particles are quickly and efficiently transported to the raw material box 6 for storage. During this process, workers do not need to come into contact with the sprue material or climb, ensuring their safety.

[0026] The valve body 13 connected to the vacuum hopper 4 is closed, and the valve body 13 connected to the injection molding machine hopper 15 is opened. The vacuum pump 10 is activated to draw air from inside the injection molding machine hopper 15, creating negative pressure inside. The normally open feed end of the injection molding machine hopper 15 is closed, and the normally closed feed end is opened, allowing the injection molding machine hopper 15 to draw material from the raw material box 6 through the guide pipe 8. The material inside the raw material box 6 is then transported to the injection molding machine hopper 15 for application, specifically for waste material processing. (In this application, the injection molding machine hopper 15 has two feed ports. One feed port is fixedly connected to a normally closed solenoid valve. This feed port is the normally closed feed end. Controlling the normally closed solenoid valve to open or close achieves the effect of controlling the opening and closing of the normally closed feed end. The normally open feed end works similarly.)

[0027] Furthermore, a dredging assembly is installed on the outside of the raw material box 6. In the dredging assembly, the pressure box 19 is fixedly installed at the bottom outside of the raw material box 6. The pressure box 19 is fixedly connected to the valve body 20 and the exhaust pipe 18. The exhaust pipe 18 is fixedly connected to the air outlet of the vacuum pump 10. The airflow drawn by the vacuum pump 10 is discharged through the exhaust pipe 18. The valve body 20 is in the normally open state, and the airflow is discharged through the pressure box 19 and the valve body 20.

[0028] When waste material is being processed, the control valve body 20 is closed. As the vacuum pump 10 operates, the internal pressure of the pressure tank 19 increases. Because multiple exhaust holes 21 are provided on the outside of the raw material tank 6, and exhaust holes 23 are provided on one side of the exhaust holes 21 on the pressure tank 19, the elastic plate 22 inside the exhaust hole 21 is fixedly connected to the raw material tank 6. Therefore, the thrust on the elastic plate 22 increases. As the vacuum pump 10 operates for a longer period of time, the elastic plate 22 deforms and pushes the material at the bottom of the inner cavity of the raw material tank 6. After a period of time, the control valve body 20 stops operating and opens, the pressure tank 19 is depressurized, and the elastic plate 22 returns to its original shape. Then the control valve body 20 closes again, and the internal pressure of the pressure tank 19 increases. The control valve body 20 repeats the above operation. The multiple elastic plates 22, which are arranged in an alternating manner, require different air pressures to deform. The deformation of the multiple elastic plates 22 plays a role in guiding the material at the bottom of the inner cavity of the raw material tank 6, preventing blockage at the outlet of the raw material tank 6.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic feeding device for an injection molding machine, comprising an injection molding machine hopper (15), characterized in that: The outlet of the injection molding machine hopper (15) is connected to a negative pressure control structure, and the negative pressure control structure is connected to a vacuum hopper (4). A crusher (2) is installed at the feed end of the vacuum hopper (4). A valve body (5) is fixedly connected to the discharge end of the vacuum hopper (4). A raw material box (6) is fixedly connected to the bottom of the valve body (5). A guide pipe (8) is fixedly connected between the discharge end of the raw material box (6) and the normally closed feed end of the injection molding machine hopper (15). A drainage component is installed at the bottom of the outer side of the raw material box (6).

2. The automatic auxiliary feeding device for an injection molding machine according to claim 1, characterized in that: The normally open feed end of the injection molding machine hopper (15) is fixedly equipped with a guide pipe three (17), and the bottom of the discharge end of the injection molding machine hopper (15) is fixedly connected with a gate valve (16).

3. The automatic auxiliary feeding device for an injection molding machine according to claim 1, characterized in that: The negative pressure control structure includes a support frame three (9), a vacuum pump (10) fixedly installed inside the support frame three (9), an air extraction pipe one (11) fixedly connected to the air inlet end of the vacuum pump (10), and a negative pressure tank (12) fixedly connected to one end of the air extraction pipe one (11). The negative pressure tank (12) is fixedly installed inside the support frame three (9).

4. The automatic auxiliary feeding device for an injection molding machine according to claim 3, characterized in that: Both sides of the negative pressure tank (12) are fixedly connected to valve body two (13), and both valve bodies two (13) are fixedly connected to one side of the two air extraction pipes two (14). One end of one of the air extraction pipes two (14) is fixedly connected to the air outlet of the injection machine hopper (15), and the other air extraction pipe two (14) is fixedly connected to the air outlet of the vacuum hopper (4).

5. The automatic auxiliary feeding device for an injection molding machine according to claim 1, characterized in that: A guide pipe (3) is fixedly connected between the feed end of the vacuum hopper (4) and the discharge end of the crusher (2), and a support frame (1) is fixedly installed on the outside of the crusher (2).

6. The automatic auxiliary feeding device for an injection molding machine according to claim 3, characterized in that: The unblocking assembly includes a pressure box (19) fixedly sleeved on the bottom of the outside of the raw material box (6), a valve body (20) and an exhaust pipe (18) fixedly connected to the outside of the pressure box (19). The exhaust pipe (18) is fixedly connected to the outlet of the vacuum pump (10). A support frame (7) is fixedly installed on the outside of the raw material box (6).

7. The automatic auxiliary feeding device for an injection molding machine according to claim 6, characterized in that: The raw material box (6) has multiple exhaust holes (21) on its outer side. Each of the multiple exhaust holes (21) has an elastic sheet (22) inside. The elastic sheet (22) is fixedly connected to the raw material box (6). An exhaust hole (23) is provided on one side of the exhaust hole (21). The exhaust hole (23) is located on the pressure box (19).

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