Dust-free vacuum feeding device of injection molding machine

Abstract

The utility model provides a dust-free vacuum feeding device of an injection molding machine, which comprises a feeding barrel, a discharging pipe is arranged at the bottom of the feeding barrel, a valve is arranged on the discharging pipe, a feeding pipe is arranged on the side surface of the feeding barrel, a barrel cover is detachably and fixedly arranged at the top of the feeding barrel, a filtering bin is arranged at the top of the barrel cover, and a discharging pipe is arranged on the filtering bin. A filter cartridge is arranged in the filter bin, the interior of the filter cartridge is communicated with the feeding barrel, an exhaust pipe communicated with the filter bin is arranged on the outer side of the filter bin, a bin cover is arranged at the top of the filter bin, and a sweeping mechanism used for sweeping the inner side of the filter cartridge is arranged on the bin cover; according to the utility model, the cleaning mechanism is periodically started, and materials adhered to the inner side of the filter cartridge can be cleaned through the cleaning mechanism, so that air is smoothly circulated, and the conveying efficiency is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding machines, and in particular relates to a dust-free vacuum feeding device of an injection molding machine. Background Art

[0002] Injection molding machines usually use vacuum loading devices for loading. The vacuum loading device uses the pressure difference between the vacuum and the environment to form gas flow in the pipeline, drive the movement of granular or powdered materials, and thus complete the transportation of powders. Vacuum transportation is a closed pipeline transportation. This transportation method can eliminate dust environmental pollution.

[0003] In the prior art, for example, a Chinese utility model patent document with authorization announcement number CN216992839U discloses an injection molding machine for easy loading of plastics, which uses a vacuum pump to extract the air inside a discharge pipe to the outside, and uses the pressure difference between the discharge pipe and the outside to transport the material to the inside of the discharge pipe; since the material contains fine dust, the dust is easily extracted during the operation of the vacuum pump, polluting the external environment, and a filter is added to prevent the dust from being extracted, but the filter is easily blocked after running for a period of time, which affects the air flow and the transportation efficiency.

[0004] Therefore, it is necessary to design a dust-free vacuum feeding device for the injection molding machine that can automatically clean the dust adhering to the filter screen, make the air flow smooth, and ensure the conveying efficiency to solve the current technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a dust-free vacuum feeding device for an injection molding machine which can automatically clean the dust adhering to the filter screen, make the air flow smooth, and ensure the conveying efficiency.

[0006] The technical solution of the utility model is: a dust-free vacuum feeding device for an injection molding machine, comprising a feeding barrel, a discharge pipe is arranged at the bottom of the feeding barrel, a valve is arranged on the discharge pipe, a feed pipe is arranged on the side of the feeding barrel, a barrel cover is detachably and fixedly arranged on the top of the feeding barrel, a filter bin is arranged on the top of the barrel cover, a filter cartridge is arranged inside the filter bin, the interior of the filter cartridge is connected with the feeding barrel, an exhaust pipe connected with the filter bin is arranged on the outside of the filter bin, a bin cover is arranged on the top of the filter bin, and a cleaning mechanism for cleaning the inside of the filter cartridge is arranged on the bin cover.

[0007] The cleaning mechanism has a driving shaft rotatably connected to the bin cover, at least two cleaning brushes are symmetrically arranged on the outer side of the driving shaft, the cleaning brushes are in contact with the inner side of the filter cartridge, and a driving motor for driving the driving shaft to rotate is arranged on the top of the bin cover.

[0008] A support handle is fixedly arranged between the cleaning brush and the driving shaft.

[0009] A lower positioning edge is fixedly arranged on the top of the barrel cover at the bottom of the filter bin, and an upper positioning edge is arranged on the bottom of the bin cover. The upper positioning edge and the lower positioning edge are matched with the inner sides of the upper and lower ends of the filter cartridge respectively.

[0010] End plates are arranged at both upper and lower ends of the filter cartridge, and gaskets are arranged between the end plate and the bin cover at the upper end of the filter cartridge and between the barrel cover at the lower end of the filter cartridge.

[0011] The bottom of the loading barrel is provided with a cone, and the discharge pipe is arranged at the bottom of the cone.

[0012] The feeding pipe is tangent to the loading barrel.

[0013] The outer side of the barrel cover is detachably fixedly connected to the top of the loading barrel through a bolt and nut mechanism arranged in a circumferential array.

[0014] The outer side of the bin cover is detachably fixedly connected to the top of the filter bin via a bolt and nut mechanism arranged in a circumferential array.

[0015] Beneficial effects of the utility model:

[0016] (1) In the present invention, the exhaust pipe is used to connect the vacuum pump, and the vacuum pump extracts the air inside the loading barrel to the outside, so that a pressure difference is generated between the loading barrel and the external environment, forming a gas flow from the feed pipe to the inside of the loading barrel, driving the material from the feed pipe into the inside of the loading barrel, and opening the valve can discharge the material inside the loading barrel to the outside to the injection molding machine for loading;

[0017] (2) When the air is sucked out through the suction pipe, the air sucked out from the loading barrel can be filtered through the filter cartridge, the material is intercepted inside the filter cartridge, and the dust is sucked out to pollute the external environment;

[0018] (3) By periodically starting the cleaning mechanism, the material adhering to the inside of the filter cartridge can be cleaned, allowing the air to flow smoothly and ensuring the conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the structural schematic diagrams of the dust-free vacuum feeding device of the injection molding machine in the utility model.

[0020] Figure 2 This is the second structural schematic diagram of the dust-free vacuum feeding device of the injection molding machine in the utility model.

[0021] Figure 3 for Figure 2 Cross-section view at AA in the middle. DETAILED DESCRIPTION

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0023] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figures 1 to 3 As shown, the dust-free vacuum feeding device of the injection molding machine comprises a feeding barrel 1, a discharge pipe 12 is arranged at the bottom of the feeding barrel 1, a valve 6 is arranged on the discharge pipe 12, a feeding pipe 11 is arranged on the side of the feeding barrel 1, a barrel cover 2 is detachably fixedly arranged on the top of the feeding barrel 1, a filter bin 3 is arranged on the top of the barrel cover 2, a filter cartridge 7 is arranged inside the filter bin 3, the inside of the filter cartridge 7 is connected with the feeding barrel 1, an air extraction pipe 31 connected thereto is arranged on the outside of the filter bin 3, a bin cover 4 is arranged on the top of the filter bin 3, and a cleaning mechanism 5 for cleaning the inside of the filter cartridge 7 is arranged on the bin cover 4; in this embodiment, the air extraction pipe 31 is used to connect a vacuum pump, and the vacuum pump discharges the feeding The air inside the barrel 1 is drawn outward, so that an air pressure difference is generated between the loading barrel 1 and the external environment, forming a gas flow from the feed pipe 11 to the inside of the loading barrel 1, driving the material from the feed pipe 11 into the inside of the loading barrel 1, and opening the valve 6 can discharge the material inside the loading barrel 1 to the injection molding machine for loading; when the air is drawn outward through the exhaust pipe 31, the air drawn out from the loading barrel 1 can be filtered through the filter cartridge 7, the material is intercepted inside the filter cartridge 7, the dust is drawn out, and the external environment is polluted; in addition, by periodically starting the cleaning mechanism 5, the material adhering to the inside of the filter cartridge 7 can be cleaned through the cleaning mechanism 5, so that the air can flow smoothly and the conveying efficiency is guaranteed.

[0025] In some embodiments, as a specific implementation of the cleaning mechanism 5, Figure 3As shown, the cleaning mechanism 5 has a driving shaft 52 rotatably connected to the bin cover 4, at least two cleaning brushes 54 are symmetrically arranged on the outer side of the driving shaft 52, and the cleaning brushes 54 are in contact with the inner side of the filter cartridge 7. A driving motor 51 for driving the driving shaft 52 to rotate is arranged on the top of the bin cover 4. After the driving motor 51 is started, the driving shaft 52 is driven to rotate. When the driving shaft 52 rotates, it drives the cleaning brush 54 to clean the inner side of the filter cartridge 7, sweeping off the material adhering to the inner side of the filter cartridge 7, and ensuring smooth air circulation at the filter cartridge 7.

[0026] In some embodiments, a support handle 53 is fixedly disposed between the cleaning brush 54 and the driving shaft 52 , and the cleaning brush 54 is fixedly supported on the outer side of the driving shaft 52 by the support handle 53 .

[0027] In some embodiments, a lower positioning edge 21 is fixedly provided on the top of the barrel cover 2 at the bottom of the filter bin 3, and an upper positioning edge 41 is provided on the bottom of the bin cover 4. The upper positioning edge 41 and the lower positioning edge 21 are respectively matched with the inner sides of the upper and lower ends of the filter cartridge 7. The upper positioning edge 41 and the lower positioning edge 21 are respectively positioned with the upper and lower ends of the filter cartridge 7 to ensure the stability of the filter cartridge 7.

[0028] In some embodiments, end plates 71 are provided at both upper and lower ends of the filter cartridge 7. The end plate 71 and the filter cartridge 7 are an integrated structure supported by stainless steel. Filter holes are evenly arranged on the filter cartridge 7. Gaskets 8 are provided between the end plate 71 and the bin cover 4 at the upper end of the filter cartridge 7 and between the barrel cover 2 at the lower end of the filter cartridge 7. The gasket 8 is an annular rubber sealing gasket, and the sealing effect at both ends of the filter cartridge 7 can be improved by the gasket 8.

[0029] In some embodiments, the bottom of the loading barrel 1 has a cone 13, and the discharge pipe 12 is arranged at the bottom of the cone 13. The cone 13 can gather and guide the materials to the discharge pipe 12, so as to facilitate the discharge of the materials from the discharge pipe 12.

[0030] In some embodiments, the feed pipe 11 is tangent to the loading barrel 1, and the material enters the loading barrel 1 through the feed pipe 11 and swirls along the inside of the loading barrel 1. Under the action of centrifugal force, the material is pressed against the inner wall of the loading barrel 1, thereby reducing the material from being drawn into the filter bin 3.

[0031] In some embodiments, the outer side of the barrel cover 2 is detachably fixedly connected to the top of the loading barrel 1 by a bolt and nut mechanism arranged in a circular array; the outer side of the bin cover 4 is detachably fixedly connected to the top of the filter bin 3 by a bolt and nut mechanism arranged in a circular array.

[0032] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0033] The above-mentioned embodiments only express some implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A dust-free vacuum feeding device for an injection molding machine, characterized in that: It comprises a loading barrel, a discharge pipe is arranged at the bottom of the loading barrel, a valve is arranged on the discharge pipe, a feed pipe is arranged on the side of the loading barrel, a barrel cover is detachably fixedly arranged on the top of the loading barrel, a filter bin is arranged on the top of the barrel cover, a filter cartridge is arranged inside the filter bin, the inside of the filter cartridge is connected with the loading barrel, an exhaust pipe connected with the filter bin is arranged on the outside of the filter bin, a bin cover is arranged on the top of the filter bin, and a cleaning mechanism for cleaning the inside of the filter cartridge is arranged on the bin cover; The cleaning mechanism has a driving shaft rotatably connected to the bin cover, at least two cleaning brushes are symmetrically arranged on the outer side of the driving shaft, the cleaning brushes are in contact with the inner side of the filter cartridge, and a driving motor for driving the driving shaft to rotate is arranged on the top of the bin cover.

2. The dust-free vacuum feeding device for an injection molding machine according to claim 1, characterized in that: A support handle is fixedly arranged between the cleaning brush and the driving shaft.

3. The dust-free vacuum feeding device for an injection molding machine according to claim 1, characterized in that: A lower positioning edge is fixedly arranged on the top of the barrel cover at the bottom of the filter bin, and an upper positioning edge is arranged on the bottom of the bin cover. The upper positioning edge and the lower positioning edge are matched with the inner sides of the upper and lower ends of the filter cartridge respectively.

4. The dust-free vacuum feeding device for an injection molding machine according to claim 1, characterized in that: End plates are arranged at both upper and lower ends of the filter cartridge, and gaskets are arranged between the end plate and the bin cover at the upper end of the filter cartridge and between the barrel cover at the lower end of the filter cartridge.

5. The dust-free vacuum feeding device for an injection molding machine according to claim 1, characterized in that: The bottom of the loading barrel is provided with a cone, and the discharge pipe is arranged at the bottom of the cone.

6. The dust-free vacuum feeding device for an injection molding machine according to claim 1, characterized in that: The feeding pipe is tangent to the loading barrel.

7. The dust-free vacuum feeding device for an injection molding machine according to claim 1, characterized in that: The outer side of the barrel cover is detachably fixedly connected to the top of the loading barrel through a bolt and nut mechanism arranged in a circumferential array.

8. The dust-free vacuum feeding device for an injection molding machine according to claim 1, characterized in that: The outer side of the bin cover is detachably fixedly connected to the top of the filter bin via a bolt and nut mechanism arranged in a circumferential array.

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