Automatic feeding assembly of screw extruder

Abstract

The utility model relates to the technical field of extruder accessories, in particular to an automatic feeding assembly of a screw extruder, which comprises a base, a support frame is fixedly connected to one end of the top of the base, and an extrusion device is fixedly connected to the top of the support frame; the discharging device is fixedly connected to the top end of the sealing cover; the cleaning device is fixedly connected to the top end of the top cover; the device has the beneficial effects that through the arrangement of the discharging device and the cleaning device, when materials enter the conical feeding hopper through the feeding opening, a second servo motor drives a stirring rod to rotate, and a scraper blade on the side edge of the stirring rod prevents the raw materials from contaminating the side wall of the conical feeding hopper while stirring the raw materials; the stirring rod rotates to drive the spiral blade arranged at the bottom to rotate, the spiral blade rotates to convey the raw materials into the conveying channel, and the situation that the raw materials block the bottom of the conical feeding hopper is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of extruder accessories, in particular to an automatic feeding component for a spiral extruder. Background Art

[0002] Extruder is a type of plastic machinery, which originated in the 18th century. According to the direction of the material flow in the die and the angle between the center line of the screw, the die head of the extruder can be divided into right-angle die head and bevel die head.

[0003] The screw extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the materials, and form a plastic round tube through the die. Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders, and the rare multi-screw extruders and screwless extruders.

[0004] An automatic feeding component for a screw extruder is disclosed in the Chinese utility model patent application disclosure specification CN220681560U, which passes through a feeding bin, and a support frame is arranged at the bottom of the feeding bin; reinforcing rib plates are arranged on both sides of the feeding bin, and a plurality of reinforcing ribs are arranged on the reinforcing rib plates, and a plurality of pressure sensors are arranged between the feeding bin and the support frame; a top plate is arranged on the top of the feeding bin, and a movable hinge is arranged on the top plate, and a feeding port is arranged on one side above the top plate, and a plurality of fixed components are installed around the other side, a servo motor is installed on one side of the feeding bin, and a discharge port is arranged at the bottom; the utility model senses the weight of raw materials in the feeding bin through a pressure sensor, and when the raw materials in the feeding bin become less, the pressure sensor transmits data to the feeder, and feeds the feeding bin to the set weight, and the feeder stops adding materials, thereby realizing automatic feeding, saving manpower, and making production efficiency higher, which greatly reduces the possibility of safety accidents. However, the automatic feeding component of the screw extruder cannot control the feeding speed when feeding, which may easily cause blockage in the feeding port, thereby affecting the processing progress of the extruder and reducing work efficiency; long-term operation of the screw extruder will cause a carbonized layer to appear on the screw rod, which will affect the extrusion effect. Utility Model Content

[0005] The utility model aims to provide an automatic feeding component for a screw extruder to solve the problems raised by the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An automatic feeding assembly for a screw extruder, comprising:

[0008] A base, one end of the top of the base is fixedly connected to a support frame, and the top of the support frame is fixedly connected to an extrusion device;

[0009] A feeding device, wherein the feeding device is fixedly connected to the top of the cover, a feeding port is arranged on the side of the top of the cover away from the feeding device, and the cover is arranged on the top of the conical feeding hopper;

[0010] A cleaning device is fixedly connected to the top of the top cover and is located in the middle of the two conical feeding hoppers.

[0011] Preferably, the extrusion device comprises a first servo motor fixedly connected to the top of the support frame, the top of the first servo motor is connected to a reducer via a gear box, and the side flange of the reducer is connected to a screw.

[0012] Preferably, the screw rod penetrates the side wall of the fixed box and extends to the inside, and the screw rod is located inside the material conveying channel, and the material conveying channel is fixedly connected to the inner wall of the fixed box.

[0013] Preferably, a top cover is provided on the top of the fixed box, and the conical feeding hopper is provided on the top of the top cover. Two groups of conical feeding hoppers are provided and are axially symmetrically distributed on the top of the top cover. The side of the fixed box is connected to the heating and cooling system, and a mouth mold is provided on the top of the heating and cooling system.

[0014] Preferably, the conical hopper is provided with the feeding device, and the feeding device includes a second servo motor fixedly connected to the top of the cover, the bottom of the second servo motor is transmission-connected with a stirring rod, the outer wall of the stirring rod is fixedly connected with a scraper, and the scraper is in contact with the inner wall of the conical hopper, and the bottom of the stirring rod is provided with a spiral blade away from the scraper, the bottom of the spiral blade is flush with the conical hopper, and the conical hopper passes through the top cover and is located directly above the feed channel.

[0015] Preferably, the cleaning device is fixedly connected to the top of the top cover, and the cleaning device includes a water pump fixedly connected to the top of the top cover, one end of the water pump is provided with a water inlet pipe, the other end of the water pump is provided with a water outlet pipe, the top of the water outlet pipe is fixedly connected to a diversion pipe, the outer surface of the diversion pipe is provided with a plurality of spray pipes, and the spray pipes pass through the side of the fixed box and extend to the interior to be located directly on the side of the screw.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model is provided with a feeding device and a cleaning device. When the material enters the conical hopper through the feeding port, the second servo motor drives the stirring rod to rotate, and the scraper on the side of the stirring rod stirs the raw materials while preventing the raw materials from being contaminated by the side wall of the conical hopper. The rotation of the stirring rod drives the spiral blades arranged at the bottom to rotate, and the rotation of the spiral blades conveys the raw materials to the feeding channel, thereby preventing the raw materials from being blocked at the bottom of the conical hopper. When the extruder stops working, the water pump conveys water to the diverter pipe through the water inlet pipe, and the diverter pipe disperses the water into the spray pipe. The water sprayed from the spray pipe cleans the carbonized layer on the surface of the screw, and the first servo motor drives the screw to rotate, thereby cleaning the screw at multiple angles, avoiding that the carbonized layer of the screw is excessive and affects the effect of extruding the workpiece, and at the same time saving the time of separately disassembling the screw for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a frontal anatomical schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the extrusion device of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the feeding device of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the cleaning device of the present utility model.

[0023] In the figure: 1. base; 2. support frame; 3. extrusion device; 31. first servo motor; 32. gear box; 33. reducer; 34. screw; 4. fixed box; 5. top cover; 6. conical feeding hopper; 61. sealing cover; 62. feeding port; 7. unloading device; 71. second servo motor; 72. stirring rod; 73. scraper; 74. spiral blade; 8. cleaning device; 81. water pump; 82. water inlet pipe; 83. water outlet pipe; 84. diverter pipe; 85. spray pipe; 9. heating and cooling system; 10. die; 11. feed channel. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0025] Embodiment 1:

[0026] See also Figures 1 to 5 The utility model provides a technical solution: an automatic feeding component for a screw extruder, comprising:

[0027] A base 1, one end of the top of the base 1 is fixedly connected to a support frame 2, and the top of the support frame 2 is fixedly connected to an extrusion device 3;

[0028] A feeding device 7, wherein the feeding device 7 is fixedly connected to the top of a cover 61, a feeding port 62 is provided on the top of the cover 61 away from the feeding device 7, and the cover 61 is provided on the top of the conical feeding hopper 6;

[0029] The cleaning device 8 is fixedly connected to the top of the top cover 5 , and the cleaning device 8 is located in the middle of the two conical feeding hoppers 6 .

[0030] Through the cleaning device 8, the water pump 81 draws water from the water inlet pipe 82 into the water outlet pipe 83, and the water is dispersed to the diversion pipe 84 by the water outlet pipe 83. The diversion pipe 84 then passes the water through multiple spray pipes 85 to clean the screw 34, thereby avoiding the accumulation of a carbonized layer on the screw 34 after use, which would cause a decrease in the quality of the extruded plastic round tube.

[0031] Embodiment 2:

[0032] like Figure 2-3 As shown, the structure of the automatic feeding assembly of the screw extruder disclosed in the second embodiment of the present utility model is basically the same as that in the first embodiment, except that:

[0033] The extrusion device 3 includes a first servo motor 31 fixedly connected to the top of the support frame 2 . The top of the first servo motor 31 is connected to a reducer 33 through a gear box 32 . The side flange of the reducer 33 is connected to a screw 34 .

[0034] The screw rod 34 penetrates the side wall of the fixed box 4 and extends to the inside. The screw rod 34 is located inside the material conveying channel 11 . The material conveying channel 11 is fixedly connected to the inner wall of the fixed box 4 .

[0035] The top of the fixed box 4 is provided with a top cover 5, and the top of the top cover 5 is provided with the conical feeding hopper 6. Two groups of conical feeding hoppers 6 are provided and are axially symmetrically distributed on the top of the top cover 5. The side of the fixed box 4 is connected to the heating and cooling system 9, and the top of the heating and cooling system 9 is provided with a mouth mold 10.

[0036] Through the extrusion device 3, the first servo motor 31 rotates the screw 34 through the reducer 33, and the rotation of the screw 34 will transfer the raw materials placed in the conical feeding hopper 6 to the heating and cooling system 9 through the feeding channel 11, and then form them through the die 10.

[0037] Embodiment three:

[0038] like Figure 4-5As shown, the structure of the automatic feeding assembly of the screw extruder disclosed in the third embodiment of the present invention is basically the same as that in the second embodiment, except that:

[0039] The conical hopper 6 is provided with the unloading device 7 inside, and the unloading device 7 includes a second servo motor 71 fixedly connected to the top of the sealing cover 61, and the bottom of the second servo motor 71 is transmission-connected with a stirring rod 72, and the outer wall of the stirring rod 72 is fixedly connected with a scraper 73, and the scraper 73 is in contact with the inner wall of the conical hopper 6, and the bottom of the stirring rod 72 away from the scraper 73 is provided with a spiral blade 74, and the bottom of the spiral blade 74 is flush with the conical hopper 6, and the conical hopper 6 passes through the top cover 5 and is located directly above the feeding channel 11.

[0040] The top of the top cover 5 is fixedly connected with the cleaning device 8, and the cleaning device 8 includes a water pump 81 fixedly connected to the top of the top cover 5, one end of the water pump 81 is provided with a water inlet pipe 82, and the other end of the water pump 81 is provided with a water outlet pipe 83, and the top of the water outlet pipe 83 is fixedly connected with a diversion pipe 84, and the outer surface of the diversion pipe 84 is provided with a plurality of spray pipes 85, and the spray pipes 85 pass through the side of the fixed box 4 and extend to the inside to be located directly on the side of the screw 34.

[0041] Through the feeding device 7, the second servo motor 71 drives the stirring rod 72 to rotate, and the rotation of the stirring rod 72 drives the scraper 73 and the spiral blade 74 on the outer wall to rotate. The rotation of the scraper 73 can stir the raw materials and prevent the raw materials from being contaminated by the inner wall of the conical feeding hopper 6. The rotation of the spiral blade 74 prevents the raw materials from being accumulated and blocked at the bottom of the conical feeding hopper 6 due to too fast feeding speed.

[0042] The present scheme is specifically as follows: after the raw material is added into the conical hopper 6 from the feeding port 62, the feeding device 7 is used to make the second servo motor 71 drive the stirring rod 72 to rotate, and the rotation of the stirring rod 72 drives the scraper 73 and the spiral blade 74 of the outer wall to rotate, and the rotation of the scraper 73 can stir the raw material, and at the same time can prevent the raw material from being contaminated by the inner wall of the conical hopper 6, and the rotation of the spiral blade 74 can prevent the raw material from being accumulated and blocked at the bottom of the conical hopper 6 due to the excessive feeding speed, and then the first servo motor 31 is driven by the extrusion device 3. The screw 34 is rotated by the reducer 33, and the rotation of the screw 34 will transfer the raw materials placed in the conical feeding hopper 6 to the heating and cooling system 9 through the feeding channel 11, and finally form them through the die 10. After stopping working, the cleaning device 8 is used to make the water pump 81 draw water from the water inlet pipe 82 into the water outlet pipe 83, and the water is dispersed to the diversion pipe 84 by the water outlet pipe 83. The diversion pipe 84 then passes the water through multiple spray pipes 85 to clean the screw 34, thereby avoiding the accumulation of a carbonized layer on the screw 34 after use, which causes a decrease in the quality of the extruded plastic round tube.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0044] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An automatic feeding assembly for a screw extruder, characterized in that: include: A base (1), wherein one end of the top of the base (1) is fixedly connected to a support frame (2), and the top of the support frame (2) is fixedly connected to an extrusion device (3); A feeding device (7), wherein the feeding device (7) is fixedly connected to the top of a cover (61), a feeding port (62) is provided on the side of the top of the cover (61) away from the feeding device (7), and the cover (61) is provided on the top of the conical feeding hopper (6); A cleaning device (8), wherein the cleaning device (8) is fixedly connected to the top of the top cover (5), and the cleaning device (8) is located in the middle of the two conical feeding hoppers (6).

2. The automatic feeding assembly for a screw extruder according to claim 1, characterized in that: The extrusion device (3) comprises a first servo motor (31) fixedly connected to the top of the support frame (2); the top of the first servo motor (31) is connected to a reducer (33) via a gear box (32); and the side flange of the reducer (33) is connected to a screw (34).

3. The automatic feeding assembly of the screw extruder according to claim 2, characterized in that: The screw rod (34) penetrates the side wall of the fixed box (4) and extends to the inside, and the screw rod (34) is located inside the material conveying channel (11), and the material conveying channel (11) is fixedly connected to the inner wall of the fixed box (4).

4. The automatic feeding assembly for a screw extruder according to claim 3, characterized in that: The top of the fixed box (4) is provided with a top cover (5), and the top of the top cover (5) is provided with the conical feeding hopper (6). Two groups of the conical feeding hoppers (6) are provided and are axially symmetrically distributed on the top of the top cover (5). The side of the fixed box (4) is connected to the heating and cooling system (9), and the top of the heating and cooling system (9) is provided with a die (10).

5. The automatic feeding assembly for a screw extruder according to claim 4, characterized in that: The conical hopper (6) is provided with the unloading device (7), and the unloading device (7) includes a second servo motor (71) fixedly connected to the top of the sealing cover (61), and the bottom of the second servo motor (71) is transmission-connected to a stirring rod (72), and the outer wall of the stirring rod (72) is fixedly connected to a scraper (73), and the scraper (73) is in contact with the inner wall of the conical hopper (6), and a spiral blade (74) is provided at the bottom end of the stirring rod (72) away from the scraper (73), and the bottom of the spiral blade (74) is flush with the conical hopper (6), and the conical hopper (6) passes through the top cover (5) and is located directly above the feeding channel (11).

6. The automatic feeding assembly for a screw extruder according to claim 5, characterized in that: The top of the top cover (5) is fixedly connected to the cleaning device (8), and the cleaning device (8) comprises a water pump (81) fixedly connected to the top of the top cover (5), one end of the water pump (81) is provided with a water inlet pipe (82), the other end of the water pump (81) is provided with a water outlet pipe (83), the top of the water outlet pipe (83) is fixedly connected to a diversion pipe (84), the outer surface of the diversion pipe (84) is provided with a plurality of spray pipes (85), and the spray pipes (85) penetrate the side of the fixed box (4) and extend to the inside to be located directly on the side of the screw rod (34).

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