Extruder with extrusion opening anti-blocking function

Abstract

The utility model relates to the technical field of extruders, and discloses an extruder with an extrusion opening anti-blocking function, which is characterized in that a contraction groove is driven by a linkage plate to rotate, simultaneously abuts against a sliding rod and enables a sliding block to slide along a sliding groove, and the sliding block can drive a sealing block to contract towards the center of a control box; the feeding hopper and the connecting pipe are sealed, so that raw materials cannot enter the extruder body, the raw materials entering the extruder body cannot be accumulated too much, the raw materials can be effectively conveyed and dissolved by the extrusion screw rod, and the cam does not abut against the pull rod after rotating for a certain distance. At the moment, the compressed reset spring can push the pull rod to drive the linkage plate to reset, and then the contraction groove drives the sealing block to expand and reset, so that the feeding hopper and the connecting pipe are opened, raw materials can pass through, the quantitative feeding effect is achieved, and smooth conveying of the extrusion screw is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an extruder with an extrusion port anti-blocking function. Background Art

[0002] An extruder is a common piece of plastics processing equipment used to heat and melt solid plastic material, then extrude it into a variety of continuous product shapes through extrusion. An extruder primarily consists of a feeding system, a screw and barrel, heating and cooling systems, an extrusion head, and a die. The extruder's operating principle is that the rotation of the screw and the heating of the barrel gradually melt the solid plastic material and push it into the die. The rotation of the screw pushes the plastic material from the feeding area to the melting area, evenly melting it. The molten plastic material is then pushed into the extrusion head and extruded through the die's extrusion port to form the desired product shape.

[0003] When using existing extruders, most of them directly pour the raw materials into the hopper and send them into the extruder without doing any quantitative processing. It is very likely that the screw will drive the block of raw materials to rotate and get stuck with the edge of the hopper, causing internal blockage. In addition, pouring too much raw materials at one time will cause too much raw materials inside the extruder, and the heat absorption and dispersion will reduce the hot melt efficiency to a certain extent, making it difficult for the extruder to pass through the extrusion port. Utility Model Content

[0004] The purpose of the utility model is to provide an extruder with an extrusion port anti-blocking function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an extruder with an extrusion port anti-blocking function, comprising an extruder body and a motor, wherein an extrusion screw is rotatably connected to the interior of the extruder body, the extrusion screw penetrates and is rotatably connected to a connecting frame, the connecting frame is fixedly connected to the inner wall of the extrusion screw, a control unit and a cleaning unit are provided inside the extruder body, and the control unit comprises:

[0006] A connecting pipe, the bottom end of which passes through the extruder body and is fixedly connected, the top end of which passes through and is fixedly connected to a control box, and the top surface of which passes through and is fixedly connected to a hopper;

[0007] A linkage plate is rotatably connected to the inner wall of the control box, a contraction groove is provided on the surface of the linkage plate, a slide groove is provided on the inner wall of the control box, a slider is slidably connected to the inner side of the slide groove, a slide rod is fixedly connected to the top surface of the slider, and a sealing block is fixedly connected to the bottom surface of the slider. Since the slider is located in the slide groove, the slider is limited by the slide groove, so that the contraction groove is driven to rotate by the linkage plate while contacting the slide rod and causing the slider to slide along the slide groove;

[0008] The pull rod is fixedly connected to the side of the linkage plate, and a guide groove is provided on the side of the control box. The pull rod passes through the guide groove, and a guide rod passes through and is fixedly connected to the inner side of the guide groove. The guide rod passes through the pull rod, and a return spring is fixedly connected to the side of the pull rod and the inner side of the guide groove. When the pull rod is moved by the cam, the linkage plate will rotate along the direction of the fixed guide rod and with the center line of the control box as the axis.

[0009] Preferably, the output shaft of the motor passes through and is fixedly connected to bevel gear 1, the output shaft of the motor is fixedly connected to the extrusion screw, the bevel gear 1 is meshed with bevel gear 2, and a rotating rod is passed through the surface of the bevel gear 2. When the motor is started, the output shaft of the motor will drive the extrusion screw to rotate, and at the same time, the output shaft of the motor will drive the rotating rod to rotate through the meshing bevel gear 1 and bevel gear 2.

[0010] Preferably, the slide rod passes through the contraction groove, and the contraction groove is in an arc shape. When the cam rotates, it will move the pull rod and make the pull rod drive the linkage plate to rotate, and then the contraction groove will contact the slide rod.

[0011] Preferably, the rotating rod is penetrated by a positioning block, the right side of the positioning block is fixedly connected to the surface of the extruder body, the top end of the rotating rod is penetrated by and fixedly connected to a cam, and the rotating rod drives the cam to rotate together when it rotates.

[0012] Preferably, the cleaning part includes a rotating ring, which is penetrated by and fixedly connected to the extrusion screw. A scraper is fixedly connected to the side of the rotating ring away from the extrusion screw. When the motor drives the extrusion screw to convey the raw materials, the extrusion screw will also drive the scraper to rotate together through the rotating ring, thereby achieving a quantitative feeding effect through the control part.

[0013] Preferably, the cross section of the scraper is U-shaped, the inner side of the scraper is fixedly connected to a limit ring, the limit ring passes through the extruder body and is rotatably connected, and the scraper passes through and is fixedly connected to an extrusion port.

[0014] Preferably, the number of the sealing blocks is six groups, and the six groups of sealing blocks are arranged in a circular array with the center line of the control box as the axis. After the cam rotates a certain distance, it no longer conflicts with the pull rod. At this time, the compressed reset spring will push the pull rod to drive the linkage plate to reset.

[0015] Compared with the prior art, the present invention provides an extruder with an anti-blocking function for the extrusion port, which has the following beneficial effects:

[0016] 1. The extruder with the extrusion port anti-blocking function, the contraction groove is driven by the linkage plate to rotate while contacting the slide bar and making the slider slide along the slide groove, and the slider will drive the sealing block to contract toward the center of the control box, thereby sealing the feed hopper and the connecting pipe, so that the raw materials cannot pass into the interior of the extruder body, so that the raw materials that have entered the extruder body will not accumulate too much, and can be effectively transported and dissolved by the extrusion screw. After the cam rotates a certain distance, it no longer contacts the pull rod. At this time, the compressed return spring will push the pull rod to drive the linkage plate to reset, and then the contraction groove drives the sealing block to expand and reset, so that the feed hopper and the connecting pipe are opened, so that the raw materials can pass through, thereby achieving the effect of quantitative feeding, ensuring smooth transportation of the extrusion screw.

[0017] 2. The extruder with the anti-blocking function of the extrusion port, while the motor drives the extrusion screw to convey the raw materials, the extrusion screw will also drive the scraper to rotate together through the rotating ring to prevent the melted raw materials from being too sticky and adhering to the inside of the extruder body. The quantitative feeding effect of the control part ensures that the raw materials can pass through the extrusion port smoothly, thereby more effectively preventing the extrusion port from being unobstructed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the extruder body of the utility model;

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

[0021] Figure 4 This is a schematic diagram of the cross-sectional expansion structure of the control box of the utility model;

[0022] Figure 5 This is a schematic diagram of the enlarged structure of the control box of the utility model;

[0023] Figure 6 This is an enlarged structural diagram of the cleaning part of the utility model.

[0024] In the figure: 1. Extruder body; 2. Control unit; 21. Connecting pipe; 22. Control box; 23. Feed hopper; 24. Linkage plate; 25. Contraction groove; 26. Slide groove; 27. Slider; 28. Slide rod; 29. ​​Sealing block; 210. Pull rod; 211. Guide groove; 212. Guide rod; 213. Return spring; 214. Bevel gear 1; 215. Bevel gear 2; 216. Rotating rod; 217. Positioning block; 218. Cam; 3. Cleaning unit; 31. Rotating ring; 32. Scraper; 33. Limiting ring; 34. Extrusion port; 4. Motor; 5. Extrusion screw; 6. Connecting frame. DETAILED DESCRIPTION

[0025] like Figures 1-6 As shown, the utility model provides a technical solution: an extruder with an extrusion port anti-blocking function, comprising an extruder body 1 and a motor 4, the extruder body 1 is internally rotatably connected to an extrusion screw 5, the extrusion screw 5 passes through and is rotatably connected to a connecting frame 6, the connecting frame 6 is fixedly connected to the inner wall of the extrusion screw 5, and the interior of the extruder body 1 is provided with a control part 2 and a cleaning part 3, the control part 2 comprises: a connecting pipe 21, a control box 22, a feed hopper 23, a linkage plate 24, a contraction groove 25, a slide groove 26, a slider 27, a slide rod 28, a sealing block 29, a pull rod 210, a guide groove 211, a guide rod 212, a return spring 213, a bevel gear 1 214, a bevel gear 2 215, a rotating rod 216, a positioning block 217, and a cam 218.

[0026] The bottom end of the connecting pipe 21 passes through the extruder body 1 and is fixedly connected. The top of the connecting pipe 21 passes through and is fixedly connected to the control box 22. The top surface of the control box 22 passes through and is fixedly connected to the feed hopper 23. The linkage plate 24 is rotatably connected to the inner wall of the control box 22. A contraction groove 25 is provided on the surface of the linkage plate 24. A slide groove 26 is provided on the inner wall of the control box 22. A slider 27 is slidably connected to the inner side of the slide groove 26. The top surface of the slider 27 is fixedly connected to the slide rod 28. The bottom surface of the slider 27 is fixedly connected to the sealing block 29. Since the slider 27 is located in the slide groove 26, the slider 27 is limited by the slide groove 26. Finally, the contraction groove 25 is driven to rotate by the linkage plate 24 while resisting the slide rod 28 and The slider 27 slides along the slide groove 26, and the slider 27 will drive the sealing block 29 to shrink toward the center of the control box 22. The pull rod 210 is fixedly connected to the side of the linkage plate 24. A guide groove 211 is provided on the side of the control box 22. The pull rod 210 passes through the guide groove 211. The inner side of the guide groove 211 passes through and is fixedly connected with a guide rod 212. The guide rod 212 passes through the pull rod 210. The side of the pull rod 210 and the inner side of the guide groove 211 are fixedly connected with a return spring 213. When the pull rod 210 is moved by the cam 218, the linkage plate 24 will rotate along the direction of the fixed guide rod 212 and with the center line of the control box 22 as the axis, and at the same time the return spring 213 will be compressed. The output shaft of motor 4 passes through and is fixedly connected to bevel gear 1 214. The output shaft of motor 4 is fixedly connected to extrusion screw 5. Bevel gear 1 214 meshes with bevel gear 2 215. The surface of bevel gear 2 215 is penetrated by a rotating rod 216. When raw materials are poured into hopper 23 and motor 4 is started, the output shaft of motor 4 will drive extrusion screw 5 to rotate. At the same time, the output shaft of motor 4 will drive rotating rod 216 to rotate through the meshing bevel gear 1 214 and bevel gear 2 215. Slide rod 28 passes through contraction groove 25, which is in the shape of an arc. When cam 218 rotates, it will move pull rod 210, causing pull rod 210 to drive linkage plate 24 to rotate, which will then cause contraction groove 25 to conflict with slide rod 28. The rotating rod 216 is penetrated by a positioning block 217. The right side of the positioning block 217 is fixedly connected to the surface of the extruder body 1. The top of the rotating rod 216 is penetrated and fixedly connected to a cam 218. When the rotating rod 216 rotates, it drives the cam 218 to rotate together. The cleaning unit 3 includes a rotating ring 31. The rotating ring 31 is penetrated and fixedly connected by the extrusion screw 5. The side of the rotating ring 31 away from the extrusion screw 5 is fixedly connected to the scraper 32. When the motor 4 drives the extrusion screw 5 to convey the raw material, the extrusion screw 5 also drives the scraper 32 to rotate together through the rotating ring 31. Through the quantitative feeding effect of the control unit 2, it is ensured that the raw material can pass through the extrusion port 34 smoothly, thereby more effectively preventing the extrusion port 34 from being unobstructed. The cross-section of the scraper 32 is U-shaped. The inner side of the scraper 32 is fixedly connected to a limit ring 33. The limit ring 33 penetrates the extruder body 1 and is rotatably connected. The scraper 32 penetrates and is fixedly connected to the extrusion port 34.There are six groups of sealing blocks 29, and the six groups of sealing blocks 29 are arranged in a circular array with the center line of the control box 22 as the axis. After the cam 218 rotates a certain distance, it no longer conflicts with the pull rod 210. At this time, the compressed return spring 213 will push the pull rod 210 to drive the linkage plate 24 to reset, and then the contraction groove 25 will drive the sealing block 29 to expand and reset.

[0027] Based on the above embodiment, first use the bracket for fixing the motor 4 to weld the motor 4 to the surface of the extruder body 1, so that the output shaft of the motor 4 is connected to the extrusion screw 5, the raw material is poured into the hopper 23, and the motor 4 is started. The output shaft of the motor 4 will drive the extrusion screw 5 to rotate, and at the same time, the output shaft of the motor 4 will drive the rotating rod 216 to rotate through the mutually meshing bevel gear 1 214 and the bevel gear 2 215, and the rotating rod 216 will drive the cam 218 to rotate together when rotating. When the pull rod 210 is toggled by the cam 218, the linkage plate 24 will follow the direction of the fixed guide rod 212 and rotate around the center line of the control box 22 as the axis, and at the same time, the return spring 213 will be compressed. When the cam 218 rotates, it will toggle the pull rod 210 and make the pull rod 210 drive the linkage plate 24 to rotate, which will then make the contraction groove 25 contact the slide bar 28, but because the slider 27 is located in the slide groove 2 6 so that the slider 27 is limited by the slide groove 26, and finally the contraction groove 25 is driven by the linkage plate 24 to rotate while contacting the slide bar 28 and causing the slider 27 to slide along the slide groove 26, and the slider 27 will drive the sealing block 29 to contract toward the center of the control box 22, thereby sealing the feed hopper 23 and the connecting pipe 21, so that the raw material cannot pass through and enter the interior of the extruder body 1, so that the raw material that has entered the extruder body 1 will not accumulate too much and can be effectively transported and dissolved by the extrusion screw 5. After the cam 218 rotates a certain distance, it no longer conflicts with the pull rod 210. At this time, the compressed return spring 213 will push the pull rod 210 to drive the linkage plate 24 to reset, and then the contraction groove 25 drives the sealing block 29 to expand and reset, thereby opening the feed hopper 23 and the connecting pipe 21, so that the raw material can pass through, thereby achieving the effect of quantitative feeding, and ensuring smooth transportation of the extrusion screw 5.

[0028] While the motor 4 drives the extrusion screw 5 to transport the raw materials, the extrusion screw 5 also drives the scraper 32 to rotate together through the rotating ring 31. The quantitative feeding effect of the control part 2 ensures that the raw materials can pass through the extrusion port 34 smoothly, thereby more effectively preventing the extrusion port 34 from being unobstructed.

[0029] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An extruder with an extrusion port anti-blocking function, comprising an extruder body (1) and a motor (4), characterized in that: The extruder body (1) is internally rotatably connected to an extrusion screw (5), the extrusion screw (5) penetrates and is rotatably connected to a connecting frame (6), the connecting frame (6) is fixedly connected to the inner wall of the extrusion screw (5), and a control unit (2) and a cleaning unit (3) are provided inside the extruder body (1), the control unit (2) includes: A connecting pipe (21), the bottom end of the connecting pipe (21) passes through the extruder body (1) and is fixedly connected, the top end of the connecting pipe (21) passes through and is fixedly connected to a control box (22), and the top surface of the control box (22) passes through and is fixedly connected to a feed hopper (23); A linkage plate (24), the linkage plate (24) is rotatably connected to the inner wall of the control box (22), a contraction groove (25) is provided on the surface of the linkage plate (24), a slide groove (26) is provided on the inner wall of the control box (22), a slider (27) is slidably connected to the inner side of the slide groove (26), a slide rod (28) is fixedly connected to the top surface of the slider (27), and a sealing block (29) is fixedly connected to the bottom surface of the slider (27); A pull rod (210) is fixedly connected to the side of the linkage plate (24); a guide groove (211) is provided on the side of the control box (22); the pull rod (210) passes through the guide groove (211); a guide rod (212) passes through and is fixedly connected to the inner side of the guide groove (211); the guide rod (212) passes through the pull rod (210); a return spring (213) is fixedly connected to the side of the pull rod (210) and the inner side of the guide groove (211).

2. The extruder with an anti-blocking function for the extrusion port according to claim 1, characterized in that: The output shaft of the motor (4) passes through and is fixedly connected to a bevel gear 1 (214), the output shaft of the motor (4) is fixedly connected to the extrusion screw (5), the bevel gear 1 (214) is meshed with a bevel gear 2 (215), and a rotating rod (216) passes through the surface of the bevel gear 2 (215).

3. The extruder with an anti-blocking function for the extrusion port according to claim 1, characterized in that: The sliding rod (28) passes through the contraction groove (25), and the contraction groove (25) is in an arc shape.

4. The extruder with an anti-blocking function for the extrusion port according to claim 2, characterized in that: The rotating rod (216) is penetrated by a positioning block (217), the right side of the positioning block (217) is fixedly connected to the surface of the extruder body (1), and the top end of the rotating rod (216) is penetrated by and fixedly connected to a cam (218).

5. The extruder with an extrusion port anti-blocking function according to claim 1, characterized in that: The cleaning portion (3) comprises a rotating ring (31), the rotating ring (31) is penetrated by and fixedly connected to the extrusion screw (5), and a scraper (32) is fixedly connected to the side of the rotating ring (31) away from the extrusion screw (5).

6. The extruder with an anti-blocking function for the extrusion port according to claim 5, characterized in that: The scraper (32) has a U-shaped cross section, and a limiting ring (33) is fixedly connected to the inner side of the scraper (32). The limiting ring (33) passes through the extruder body (1) and is rotatably connected. The scraper (32) passes through and is fixedly connected to an extrusion port (34).

7. The extruder with an anti-blocking function for the extrusion port according to claim 1, characterized in that: The number of the sealing blocks (29) is six groups, and the six groups of sealing blocks (29) are respectively arranged in a circular array with the center line of the control box (22) as the axis.

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