Automatic feeding device of plastic extruder

Abstract

The utility model relates to the technical field of plastic processing, in particular to an automatic feeding device of a plastic extruder, which comprises a suction mechanism and a blanking mechanism, the blanking mechanism is positioned at the bottom end of the suction mechanism, the suction mechanism comprises a negative pressure generator, an airflow channel is arranged in the negative pressure generator, and the airflow channel is communicated with the suction mechanism. An air inlet connector is fixedly installed at the front end of the negative pressure generator, an air guide pipe is fixedly installed at the right end of the negative pressure generator, the front end of the air guide pipe is fixedly installed at the front end of the air tank, a cushion block is fixedly installed at the bottom end of the air tank, and a pulse valve is fixedly installed in the middle of the front end of the air tank. The negative pressure generator drives the interior of the feeding barrel to generate negative pressure, so that materials can rapidly enter the feeding barrel through the material pumping pipe, dust flying can be effectively avoided through negative pressure feeding, meanwhile, the crushing teeth rotate in the crushing barrel for crushing, large-particle materials can be crushed into powder, and the crushing efficiency is improved. Therefore, the materials are prevented from being blocked and cannot enter the extruder.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, and particularly relates to an automatic feeding device for a plastic extruder. Background Art

[0002] A plastic extruder is a device that mixes and extrudes plastic raw materials. When the extruder is working, it is necessary to add materials in a timely manner. Manual feeding will cause problems such as high work intensity and low efficiency. Therefore, an automatic feeding device is needed.

[0003] As disclosed in the patent with the authorization announcement number CN208730318U, an automatic feeding device for a plastic extruder is disclosed. The following technical solutions are adopted: It includes a mixing hopper, a first driving bracket, a second driving bracket, and a plurality of feeding hoppers. A vertical driving device is arranged on the first driving bracket. The vertical driving device drives and connects a rotary driving device through a driving block. The rotary driving device is connected to the mixing hopper through a horizontally arranged telescopic frame. The plurality of feeding hoppers are circular and are arranged on the second driving bracket through a rotating device; when the horizontally arranged telescopic frame is in the unfolded state, the mixing hopper is below the feeding hoppers; a metering pump is arranged at the bottom of the feeding hopper, and a discharge valve is arranged at the bottom of the mixing hopper. The advantages of the utility model are as follows: The raw materials are quantitatively poured into the mixing hopper through the feeding hopper, and the mixing hopper is driven above the feeding hopper of the extruder for automatic feeding through the vertical driving device and the telescopic frame, reducing labor costs and improving the feeding efficiency at the same time.

[0004] However, currently, when the existing feeding device is feeding, a filter screen is usually set at the insertion pipe to prevent large-particle materials from entering the feeding device. However, during long-term feeding, the filter screen will be blocked by large-particle materials, resulting in a decrease in the feeding amount. At the same time, the large-particle materials need to be crushed again for continued use after being filtered out, resulting in a cumbersome process and reduced efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic feeding device for a plastic extruder to solve the problems put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An automatic feeding device for a plastic extruder includes a suction mechanism and a feeding mechanism. The feeding mechanism is located at the bottom end of the suction mechanism. The suction mechanism includes a negative pressure generator. An air flow channel is opened inside the negative pressure generator. An air inlet joint is fixedly installed at the front end of the negative pressure generator. A guide pipe is fixedly installed at the right end of the negative pressure generator. The front end of the guide pipe is fixedly installed at the front end of an air tank. A cushion block is fixedly installed at the bottom end of the air tank. A pulse valve is fixedly installed in the middle of the front end of the air tank.

[0008] Preferably, the suction mechanism includes a cylinder cover. A negative pressure generator is fixedly installed on the left side of the top end of the cylinder cover. A pulse valve is fixedly installed in the middle of the top end of the cylinder cover. A cushion block is fixedly installed on the right side of the top end of the cylinder cover. A filter element is movably installed at the bottom end of the cylinder cover.

[0009] Preferably, the feeding mechanism includes a feeding cylinder. A cylinder cover is fixedly installed at the top end of the feeding cylinder. A material suction pipe is fixedly installed at the left end of the feeding cylinder. An insertion pipe is fixedly installed at the bottom end of the material suction pipe.

[0010] Preferably, a crushing cylinder is fixedly installed in the middle of the material suction pipe. A first driving machine is fixedly installed at the left end of the crushing cylinder. A rotating gear is fixedly installed at the front end of the first driving machine.

[0011] Preferably, a transmission gear is movably installed below the rotating gear. A guide cylinder is movably installed in the middle of the transmission gear. The guide cylinder is fixedly installed on a support plate. The support plate is fixedly installed inside the crushing cylinder. A crushing tooth is fixedly installed at the bottom end of the transmission gear.

[0012] Preferably, a feeding hopper is fixedly installed at the bottom end of the feeding cylinder. A second driving machine is fixedly installed at the front end of the feeding hopper. A butterfly plate is fixedly installed at the front end of the second driving machine. A fixing plate is fixedly installed at the bottom end of the feeding hopper. A fixing screw is movably installed on the fixing plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] For the automatic feeding device of the plastic extruder, a negative pressure is generated inside the feeding cylinder driven by the negative pressure generator, so that the material can quickly enter the feeding cylinder through the material suction pipe. Negative pressure feeding can effectively avoid dust flying.

[0015] For the automatic feeding device of the plastic extruder, large-particle materials can be crushed into powder by the rotation and crushing of the crushing teeth in the crushing cylinder, thereby avoiding material blockage and the inability to enter the extruder. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the suction mechanism of the present utility model;

[0018] Figure 3 It is a schematic diagram of the internal plane of the negative pressure generator of the present utility model;

[0019] Figure 4 It is a schematic diagram of the internal plane of the crushing cylinder of the present utility model;

[0020] Figure 5This is a schematic internal plan view of the blanking hopper of the utility model.

[0021] In the figure: 101, suction mechanism; 102, blanking mechanism; 103, negative pressure generator; 104, air flow channel; 105, air inlet joint; 106, air duct; 201, air tank; 202, cushion block; 203, pulse valve; 204, cylinder cover; 205, feeding cylinder; 206, material suction pipe; 301, insertion pipe; 302, crushing cylinder; 303, first driving machine; 304, rotating gear; 305, transmission gear; 306, guide cylinder; 401, support plate; 402, crushing teeth; 403, blanking hopper; 404, second driving machine; 405, butterfly plate; 406, fixing plate; 501, fixing screw; 502, filter element. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 As shown, a technical solution provided by the present utility model:

[0024] An automatic feeding device for a plastic extruder includes a suction mechanism 101 and a blanking mechanism 102. The blanking mechanism 102 is located at the bottom end of the suction mechanism 101. The suction mechanism 101 includes a negative pressure generator 103. An air flow channel 104 is opened inside the negative pressure generator 103. An air inlet joint 105 is fixedly installed at the front end of the negative pressure generator 103. An air duct 106 is fixedly installed at the right end of the negative pressure generator 103. The front end of the air duct 106 is fixedly installed at the front end of an air tank 201. A cushion block 202 is fixedly installed at the bottom end of the air tank 201. A pulse valve 203 is fixedly installed in the middle of the front end of the air tank 201.

[0025] Through the above solution, high-speed gas can be made to move in a specified direction through the air flow channel, gas can enter the negative pressure generator through the air inlet joint, the gas can be brought into the air tank through the air duct, and the gas in the air tank can be instantaneously released through the pulse valve.

[0026] In this embodiment, preferably, the suction mechanism 101 includes a cylinder cover 204. A negative pressure generator 103 is fixedly installed on the left side of the top end of the cylinder cover 204. A pulse valve 203 is fixedly installed in the middle of the top end of the cylinder cover 204. A cushion block 202 is fixedly installed on the right side of the top end of the cylinder cover 204. A filter element 502 is movably installed at the bottom end of the cylinder cover 204.

[0027] Through the above solution, the suction assembly can be installed through the cylinder cover, and the feeding cylinder can be sealed. The filter element can filter out the materials entering the feeding cylinder from the air.

[0028] In this embodiment, preferably, the blanking mechanism 102 includes a feeding cylinder 205. A cylinder cover 204 is fixedly installed at the top end of the feeding cylinder 205. A material suction pipe 206 is fixedly installed at the left end of the feeding cylinder 205. An insertion pipe 301 is fixedly installed at the bottom end of the material suction pipe 206.

[0029] Through the above solution, materials can be introduced into the feeding cylinder through the material suction pipe, and the material suction pipe can be inserted into the storage device through the insertion pipe.

[0030] In this embodiment, preferably, a crushing cylinder 302 is fixedly installed in the middle of the material suction pipe 206. A first driving machine 303 is fixedly installed at the left end of the crushing cylinder 302. A rotating gear 304 is fixedly installed at the front end of the first driving machine 303.

[0031] Through the above solution, the rotation of the rotating gear in the crushing cylinder can be driven by the operation of the first driving machine.

[0032] In this embodiment, preferably, a transmission gear 305 is movably installed below the rotating gear 304. A guide cylinder 306 is movably installed in the middle of the transmission gear 305. The guide cylinder 306 is fixedly installed on a support plate 401. The support plate 401 is fixedly installed inside the crushing cylinder 302. A crushing tooth 402 is fixedly installed at the bottom end of the transmission gear 305.

[0033] Through the above solution, the rotation of the crushing tooth can be driven by the rotation of the transmission gear driven by the rotating gear. The crushed materials can be guided through the guide cylinder and continue to move through the material suction pipe.

[0034] In this embodiment, preferably, a blanking hopper 403 is fixedly installed at the bottom end of the feeding cylinder 205. A second driving machine 404 is fixedly installed at the front end of the blanking hopper 403. A butterfly plate 405 is fixedly installed at the front end of the second driving machine 404. A fixing plate 406 is fixedly installed at the bottom end of the blanking hopper 403. A fixing screw 501 is movably installed on the fixing plate 406.

[0035] Through the above solution, the rotation of the butterfly plate driven by the second driving machine can open the blanking hopper to allow the materials to fall into the blanking cylinder of the extruder. The device can be fixed in the blanking cylinder of the extruder by passing the fixing screw through the fixing plate.

[0036] When the automatic feeding device of a plastic extruder in this embodiment is in use, the user fixes the fixing plate 406 to the top of the feeding barrel of the extruder through the fixing screw 501, thereby completing the installation of the device. Then, the user inserts the insertion tube 301 into the storage device and connects it to the gas source through the air inlet joint 105. After the connection, the negative pressure generator 103 starts to intake air. The high-pressure gas generates high-speed flow through the air flow direction, causing the gas in the feeding barrel 205 to be driven by the air flow. After being driven by the air flow, it enters the gas tank 201 through the air guide pipe 106. The gas flow in the feeding barrel 205 generates negative pressure in the feeding barrel 205. The negative pressure causes the material in the storage device to enter the feeding barrel 205 through the material suction pipe 206. When the material passes through the crushing barrel 302, the first drive motor 303 drives the rotating gear 304 to rotate, causing the transmission gear 305 to drive the crushing teeth 402 to rotate and crush the incoming material to prevent the material particles from being too large. After the material enters the feeding barrel 205, the filter element 502 filters the material from the air and falls into the feeding hopper 403 by gravity. When the material in the feeding barrel of the extruder is insufficient, the second drive motor 404 operates to drive the butterfly plate 405 to open, allowing the material to fall into the feeding barrel of the extruder. While the material is being fed, the pulse valve 203 operates to instantaneously release the gas in the gas tank 201, causing the material attached to the filter element 502 to be blown and fall, thereby completing the automatic feeding of the extruder.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding device for a plastic extruder, characterized in that: The invention comprises a suction mechanism (101) and a feeding mechanism (102), wherein the feeding mechanism (102) is located at the bottom end of the suction mechanism (101), and the suction mechanism (101) comprises a negative pressure generator (103), wherein an air flow channel (104) is provided inside the negative pressure generator (103), an air inlet joint (105) is fixedly installed at the front end of the negative pressure generator (103), an air guide pipe (106) is fixedly installed at the right end of the negative pressure generator (103), and the front end of the air guide pipe (106) is fixedly installed at the front end of a gas tank (201), a cushion block (202) is fixedly installed at the bottom end of the gas tank (201), and a pulse valve (203) is fixedly installed in the middle of the front end of the gas tank (201).

2. The automatic feeding device for a plastic extruder according to claim 1, characterized in that: The suction mechanism (101) comprises a cylinder cover (204), a negative pressure generator (103) is fixedly mounted on the left side of the top end of the cylinder cover (204), a pulse valve (203) is fixedly mounted in the middle of the top end of the cylinder cover (204), a cushion block (202) is fixedly mounted on the right side of the top end of the cylinder cover (204), and a filter element (502) is movably mounted on the bottom end of the cylinder cover (204).

3. The automatic feeding device for a plastic extruder according to claim 1, characterized in that: The unloading mechanism (102) comprises a loading barrel (205), a barrel cover (204) is fixedly mounted on the top of the loading barrel (205), a material extraction pipe (206) is fixedly mounted on the left end of the loading barrel (205), and a plug (301) is fixedly mounted on the bottom end of the material extraction pipe (206).

4. The automatic feeding device for a plastic extruder according to claim 3, characterized in that: A crushing cylinder (302) is fixedly installed in the middle of the extraction pipe (206), a first driving machine (303) is fixedly installed at the left end of the crushing cylinder (302), and a rotating gear (304) is fixedly installed at the front end of the first driving machine (303).

5. The automatic feeding device for a plastic extruder according to claim 4, characterized in that: A transmission gear (305) is movably mounted on the lower side of the rotating gear (304), a guide cylinder (306) is movably mounted in the middle of the transmission gear (305), the guide cylinder (306) is fixedly mounted on a support plate (401), the support plate (401) is fixedly mounted inside a crushing cylinder (302), and a crushing tooth (402) is fixedly mounted on the bottom end of the transmission gear (305).

6. The automatic feeding device for a plastic extruder according to claim 5, characterized in that: A lower hopper (403) is fixedly mounted on the bottom end of the upper barrel (205), a second driving machine (404) is fixedly mounted on the front end of the lower hopper (403), a butterfly plate (405) is fixedly mounted on the front end of the second driving machine (404), a fixing plate (406) is fixedly mounted on the bottom end of the lower hopper (403), and a fixing screw (501) is movably mounted on the fixing plate (406).

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