Feeding device for plastic extruder

Abstract

The invention relates to the technical field of plastic extruders, and particularly discloses a feeding device for a plastic extruder, the feeding device comprises a hopper, the hopper comprises a guiding part and a discharging part, a rotating rod is rotatably assembled at the joint of the guiding part and the discharging part, a sliding groove is formed in the side face of the rotating rod in a penetrating manner, and a rotating plate is slidably arranged in the sliding groove; a driving assembly is arranged on the hopper and the rotating rod; the driving assembly is connected with the rotating rod and the rotating plate respectively; the driving assembly drives the rotating plate to reciprocate in the sliding grooves so that the two ends of the rotating plate can be alternately located in the sliding grooves. The rotating rod drives the rotating plate to rotate into the discharging part so as to push raw materials into the discharging part, and when the pushing plate rotates into the discharging part and has the same inclination angle with the guiding part, the driving assembly drives the pushing plate to move, so that the end, located in the sliding groove, of the pushing plate is separated from the sliding groove and enters the guiding part, and meanwhile the other end of the pushing plate enters the sliding groove; the feeding device for the plastic extruder has the effect of improving the feeding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of plastic extruders, in particular to a feeding device for a plastic extruder. Background Art

[0002] The plastic extruder is the core equipment for TPE processing. During TPE processing, the prepared raw materials are put into a high-speed mixer, and the components are evenly dispersed through mechanical stirring. The mixed raw materials are then put into the extruder. The extruder uses a screw to mix and melt the TPE raw materials, and then extrude them into sheets, pipes or granules through a mold.

[0003] A patent document with announcement number CN110253817B discloses a plastic extruder, including a frame, the raw material processing mechanism includes a heating chamber arranged in the frame, a first motor is fixedly installed on the top end face of the frame, the lower output shaft of the first motor is fixedly connected to the motor shaft, the motor shaft passes through the heating chamber and rotates between the bottom wall of the heating chamber to feed the plastic raw material into the hopper, the plastic raw material in the hopper enters the heating chamber through the feeding pipe, the heating component heats the raw material in the heating chamber, and finally the heated and melted raw material is fed into the injection molding cavity for extrusion processing.

[0004] However, this solution also has the following problems: when the plastic raw materials enter the heating chamber through the hopper, they are prone to arching and clogging. For example, TPE raw materials are prone to increase in viscosity due to moisture absorption and other reasons, forming lumps and causing the discharge port of the hopper to be blocked. Especially when there is no external force, it will cause the discharge interruption phenomenon. In other existing technologies, a rotatable spiral blade or stirring rod is set in the hopper, and the blockage is cleared by the rotating spiral blade or stirring rod, but this method often cannot completely cover the discharge port, resulting in the inability to completely clear the blockage, and the phenomenon of affecting the discharge efficiency still exists. In addition, when clearing raw materials with higher viscosity, the raw materials are easy to adhere to the spiral blade or stirring rod, which makes the subsequent cleaning cumbersome, and as the raw materials adhered to the surface gradually increase, not only the clearing effect is affected, but also new blockages may be formed, seriously affecting the feeding efficiency. Summary of the Invention

[0005] The invention provides a feeding device for a plastic extruder, aiming to solve the problem in the related art that raw materials in a hopper are easily blocked, thereby affecting the feeding efficiency.

[0006] The feeding device for a plastic extruder of the present invention comprises a hopper, which comprises: a guide portion arranged outwardly and inclined, and a vertically arranged discharge portion, wherein the guide portion is arranged above the discharge portion, a rotating rod is rotatably mounted at the connection between the guide portion and the discharge portion, a chute is penetrated through the side of the rotating rod, and a rotating plate is slidably arranged in the chute, and a driving assembly is provided on the hopper and the rotating rod, and the driving assembly is respectively connected to the rotating rod and the rotating plate to respectively drive the rotating rod to rotate and drive the rotating plate to slide in the chute; The driving assembly drives the rotating plate to move back and forth in the chute so that its two ends are alternately in the chute; The rotating rod drives the rotating plate to rotate into the unloading part to push the raw materials into the unloading part. When the rotating plate rotates into the unloading part and has the same inclination angle as the guide part, the driving assembly drives the rotating plate to move so that one end of the rotating plate in the chute separates from the chute and enters the guide part, while the other end enters the chute.

[0007] The effect is that, in the initial state, the turn plate is in the guide part, and the driving component drives the rotating rod to rotate, driving the turn plate to rotate into the guide part, dredging and pushing the raw materials. When the turn plate rotates into the guide part and the inclination angle of the turn plate is the same as that of the guide part, the driving component drives the turn plate to slide in the slide groove, so that the other end of the turn plate moves into the slide groove, and the turn plate enters the guide part again. When the turn plate enters the guide part, it fits with the inner wall of the guide part, increasing the coverage area of ​​the turn plate when it rotates, and at the same time, when the turn plate moves, the raw materials adhering to the side of the turn plate are scraped off by the rotating rod, and the turn plate is cleaned. The above actions are repeated as the rotating rod rotates, and the position of the turn plate and the turn plate are repeatedly adjusted and cleaned to ensure the push and dredging effect of the turn plate on the raw materials, thereby improving the loading efficiency.

[0008] Preferably, the end of the rotating rod extends to the outside of the hopper, and the driving assembly includes: a power member 1 arranged on the hopper, a power member 2 arranged at the end of the rotating rod, and a transmission member connected to the rotating plate. The output end of the power member 1 is connected to the rotating rod to drive the rotating rod to rotate, and the output end of the power member 2 is connected to the transmission member to move the rotating plate.

[0009] The effect is that the power member 1 drives the rotating rod to rotate, and then drives the rotating plate to rotate, and the power member 2 drives the rotating plate to move through the transmission member to adjust the position of the rotating plate.

[0010] Preferably, the transmission member includes: a transmission rod connected to the second output end of the power member, a gear coaxially connected to the transmission rod, and a rack meshing with the gear. The rack is arranged in the rotating plate and is arranged along the sliding direction of the rotating plate.

[0011] The effect is that the power member 2 drives the gear to rotate through the transmission rod, and the gear drives the rotating plate to move through the rack, thereby adjusting the position of the rotating plate.

[0012] Preferably, two groups of rotating rods and rotating plates are provided, and the two groups of rotating plates rotate synchronously in opposite directions.

[0013] The effect is that setting up two groups can improve the dredging and pushing effect of the raw materials.

[0014] Preferably, the rotating plate includes: a middle part and telescopic parts arranged at both ends of the middle part, the telescopic parts are slidably assembled on the middle part, and an elastic member connected to the telescopic part is arranged in the middle part. The elastic member is used to drive the telescopic part to slide away from the middle part. When the two groups of rotating plates rotate to a horizontal position, their telescopic parts abut against each other and compress the elastic member.

[0015] The effect is that when the two sets of rotating plates rotate to be close to each other, the telescopic parts of the two sets of rotating plates abut against each other. As the rotating plates rotate, the telescopic parts slide relative to the middle part. After the rotating plates rotate to the unloading part and are at the same inclination angle as the guide part, the telescopic parts separate. When the rotating plates rotate, the telescopic plates maintain an abutment state so as to push the raw materials into the unloading part, thereby improving the loading efficiency.

[0016] Preferably, the rack includes: a fixed portion arranged in the middle portion, a sliding portion arranged in the telescopic portion, an inclined surface 1 being provided at the end of the sliding portion, and when the inclined surface 1 abuts against the fixed portion, the sliding portion and the fixed portion are on the same straight line, and the sliding portion is slidably arranged in the telescopic portion along a direction perpendicular to the rack, and a spring 2 is provided in the telescopic portion, and the spring 2 is used to drive the inclined surface 1 to abut against the fixed portion, and when the telescopic portion slides relative to the fixed portion, the sliding portion slides and compresses the spring 2, and at the same time the inclined surface 1 is separated from the fixed portion.

[0017] The effect is that when the telescopic parts of the two sets of rotating plates abut against each other, the telescopic part moves, and the sliding part slides under the action of the inclined surface 1 and compresses the elastic part 2 until the sliding part and the fixed part are dislocated and separated, thereby reducing the phenomenon of the sliding part interfering with the movement of the telescopic part.

[0018] Preferably, a stopper is rotatably provided on the transmission rod, and a bent portion is provided on the stopper, and the bent portion is in sliding contact with a side of the rack away from the gear.

[0019] The effect is that the stopper fixes the sliding portion at the rotating rod through the bent portion, so that only the telescopic portion close to the other set of rotating plates moves, thereby improving the stability of the two sets of rotating plates when they are matched.

[0020] Preferably, mounting grooves are provided on both side walls of the slide groove, and a blocking block is slidingly provided in the mounting groove. A spring piece three is provided in the mounting groove, and the spring piece three is connected to the blocking block to drive the blocking block to move into the slide groove. The blocking block moves into the slide groove to block the slide groove, and a slope two is provided on the side of the blocking block close to the inside of the slide groove. The rotating plate slides until it abuts against the slope two to drive the blocking block to move into the mounting groove.

[0021] The effect is that when the two ends of the rotating plate are alternately in the chute, the blocking block moves into the chute under the action of the elastic member three, blocking the opening at the other end of the chute, reducing the phenomenon of raw materials entering the chute, and improving the stability of the rotating plate and the rotating rod when they are in cooperation.

[0022] Preferably, a push plate is vertically arranged in the hopper, the push plate is arranged above the guide part, the push plate is horizontally slidably assembled in the hopper, and four spring members are arranged between the push plate and the hopper. The four spring members are used to drive the push plate to be flush with the upper end of the guide part. After the rotating plate moves into the guide part, it abuts against the push plate and drives the push plate to move. After the rotating plate is separated from the push plate, the four spring members drive it to move to the initial position and push the raw materials.

[0023] The effect is that after the rotating plate moves into the guide part, it abuts against the push plate and pushes the push plate to move. The push plate moves and compresses the elastic member four. After the rotating plate and the push plate are separated, the push plate moves to the initial position under the action of the elastic member four, and at the same time pushes the raw material to reduce the blockage of the raw material.

[0024] Preferably, the side surface of the rotating plate is in sliding contact with the inner wall of the hopper, and a clearance groove is provided on one side of the rotating plate close to the inner wall of the hopper, and the transmission rod passes through the clearance groove and is connected to the gear.

[0025] The effect is that the transmission rod slides in the give way groove, reducing the phenomenon of the transmission rod interfering with the movement of the turn plate. At the same time, one side of the give way groove on the turn plate abuts against the inner wall of the hopper to block the give way groove, which can prevent the raw materials from entering between the turn plates.

[0026] Beneficial effects: The present invention drives the rotating plate to push and clear the raw materials through the rotating rod. At the same time, the rotating plate moves into the guide part after rotating into the unloading part, and rotates again in the same direction to clear the raw materials. When the rotating plate enters the guide part, it fits with the guide part, increasing the coverage area of ​​the rotating plate when rotating. At the same time, the rotating plate moves past the rotating rod, and the raw materials adhering to the side of the rotating plate are scraped off by the rotating rod, thereby ensuring the pushing and clearing effect of the rotating plate on the raw materials and improving the loading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure at point A in the middle.

[0029] Figure 3 1 is a top view of the hopper in the embodiment of the present invention.

[0030] Figure 4 Schematic diagram of the connection between the power member 1 and the rotating rod in an embodiment of the present invention.

[0031] Figure 52 is a schematic structural diagram of a rotating plate and a rotating rod in an embodiment of the present invention.

[0032] Figure 6 Schematic diagram of the coordination between the rotating plate and the sliding groove in an embodiment of the present invention.

[0033] Figure 7 yes Figure 6 Schematic diagram of the structure at point B.

[0034] Figure 8 2 is a schematic structural diagram of a rotating rod in an embodiment of the present invention.

[0035] Figure 9 It is a partial exploded schematic diagram of the sliding portion and the stopper according to an embodiment of the present invention.

[0036] Figure 10 3 is a schematic diagram of a state in which the rotating plate moves into the guide portion in an embodiment of the present invention.

[0037] Reference numerals: 1. Extruder body; 2. Hopper; 21. Guide part; 22. Discharging part; 23. Push plate; 24. Elastic part 4; 3. Rotating rod; 4. Rotating plate; 41. Middle part; 411. Elastic part 1; 42. Telescopic part; 5. Driving assembly; 51. Power part 1; 52. Power part 2; 53. Transmission part; 531. Transmission rod; 532. Gear; 533. Rack; 534. Fixed part; 535. Sliding part; 536. Inclined surface 1; 537. Elastic part 2; 6. Slide; 61. Mounting groove; 7. Blocking block; 71. Elastic part 3; 72. Inclined surface 2; 8. Give way groove; 9. Stop block; 91. Bending part. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] like Figures 1 to 10 As shown, the feeding device for a plastic extruder of the present invention includes a hopper 2 provided on an extruder body 1. The hopper 2 includes a guide portion 21 and a discharge portion 22. The guide portion 21 is tilted outward, the discharge portion 22 is vertically arranged, and the guide portion 21 is arranged above the discharge portion 22. A rotating rod 3 and a rotating plate 4 are provided in the hopper 2. The rotating rod 3 is rotatably assembled at the connection between the guide portion 21 and the discharge portion 22, and the rotating plate 4 is provided on the side of the rotating rod 3. A driving assembly 5 is provided on the hopper 2, and the driving assembly 5 is connected to the rotating rod 3. Raw materials are put into the hopper 2 for feeding, and at the same time, the driving assembly 5 drives the rotating plate 4 to rotate through the rotating rod 3. The rotating plate 4 rotates from the guide portion 21 to the discharge portion 22 to push the raw materials in the guide portion 21 into the discharge portion 22, thereby reducing the phenomenon of blockage during feeding.

[0040] Reference Figures 5 to 8 A slide groove 6 is provided on the side of the rotating rod 3, one end of the rotating plate 4 is arranged in the slide groove 6, and the rotating plate 4 is slidably arranged in the slide groove 6. The driving component 5 is connected to the rotating plate 4 for adjusting the position of the rotating plate 4. The driving component 5 drives the rotating rod 3 to rotate while driving the rotating plate 4 to move back and forth in the slide groove 6, so that the two ends of the rotating plate 4 are alternately in the slide groove 6.

[0041] In the initial state, one end of the rotating plate 4 is in the chute 6, and the rotating rod 3 rotates to drive the rotating plate 4 to rotate into the discharge portion 22. When the rotating plate 4 rotates to the same inclination angle as the guide portion 21, the driving assembly 5 drives the rotating plate 4 to slide in the direction of the guide portion 21, so that the end in the chute 6 separates from the chute 6 and enters the guide portion 21, while the other end enters the chute 6. Then the rotating rod 3 continues to rotate, and the above operation is repeated, repeatedly pushing the raw materials into the discharge portion 22. When the rotating plate 4 moves into the guide portion 21, its inclination angle is the same as the inclination angle of the guide portion 21, that is, it moves close to the side wall of the guide portion 21. When the rotating plate 4 rotates, its coverage area is increased, thereby improving the pushing effect of the raw materials.

[0042] Reference Figure 10 , this state is a schematic diagram of the state when the rotating plate 4 moves toward the guide portion 21, and at this time it has not completely moved into the guide portion 21.

[0043] In addition, when the turn plate 4 moves into the guide portion 21, the edge of the opening of the slide groove 6 abuts against the side of the turn plate 4, and part of the raw materials adhering to the side of the turn plate 4 can be scraped off, that is, when the turn plate 4 moves through the turn rod 3, the surface of the turn plate 4 is cleaned, reducing the excessive raw materials adhering to the side of the turn plate 4, and improving the pushing effect of the turn plate 4 on the raw materials.

[0044] Reference Figure 6 、 Figure 8 , mounting grooves 61 are opened on both side walls of the chute 6, and blocking blocks 7 are arranged in the mounting grooves 61. The blocking blocks 7 are slidably arranged in the direction toward the chute 6, and a spring three 71 connected to the blocking blocks 7 is provided in the mounting groove 61. The spring three 71 is set as a spring. The spring three 71 is used to drive the blocking blocks 7 on both sides of the chute 6 to move into the chute 6 and abut against each other, so as to block the opening of the chute 6, reduce the phenomenon of raw materials entering the chute 6, and improve the stability of the turn plate 4 when moving.

[0045] Reference Figure 8A second inclined surface 72 is provided on the side of the blocking block 7 near the interior of the chute 6, and the second inclined surface 72 is arranged toward the inner wall of the chute 6. When the rotating plate 4 moves, the rotating plate 4 abuts against the second inclined surface 72, and the second inclined surface 72 drives the blocking block 7 to move until the blocking block 7 moves into the installation groove 61, thereby adjusting the position of the rotating plate 4. There are two sets of blocking blocks 7, each set at the opening at each end of the chute 6. When the two ends of the rotating plate 4 are alternately in the chute 6, one set of blocking blocks 7 abuts against each other to block the chute 6, and the other set of blocking blocks 7 abuts against the side of the rotating plate 4.

[0046] Reference Figure 4 、 Figure 5 、 Figure 8 The driving assembly 5 includes a power piece 1 51, a power piece 2 52, and a transmission piece 53. The power piece 1 51 and the power piece 2 52 are both configured as motors. The end of the rotating rod 3 extends to the outside of the hopper 2. The power piece 1 51 is disposed on the hopper 2. The output end of the power piece 1 51 is coaxially connected to the rotating rod 3. The power piece 2 52 is disposed on the rotating rod 3. The transmission piece 53 is disposed inside the rotating rod 3. The transmission piece 53 is respectively connected to the output end of the power piece 2 52 and the rotating plate 4.

[0047] The power member 1 51 drives the rotating rod 3 to rotate, and the power member 2 52 rotates synchronously with the rotating rod 3. When the rotating plate 4 needs to be adjusted, the power member 2 52 drives the rotating plate 4 to move relative to the rotating rod 3 through the transmission member 53.

[0048] Reference Figure 8 、 Figure 9 The transmission member 53 includes a transmission rod 531, a gear 532, and a rack 533. The rack 533 is disposed within the rotating plate 4 and is arranged along the sliding direction of the rotating plate 4. The transmission rod 531 is coaxially connected to the output end of the second power member 52. The gear 532 is coaxially disposed outside the transmission rod 531 and meshes with the rack 533. The second power member 52 drives the gear 532 to rotate via the transmission rod 531. The rotation of the gear 532 drives the rack 533 to move, thereby adjusting the position of the rotating plate 4.

[0049] Reference Figure 5 A clearance groove 8 is provided on the side of the rotating plate 4 near the interior of the hopper 2. The clearance groove 8 is arranged along the sliding direction of the rotating plate 4. The transmission rod 531 extends through the clearance groove 8 into the interior of the rotating plate 4, reducing the transmission rod 531 from interfering with the movement of the rotating plate 4. The side of the rotating plate 4 slides against the inner wall of the hopper 2, blocking the clearance groove 8 when the rotating plate 4 rotates, thereby reducing the possibility of raw materials entering the interior of the rotating plate 4.

[0050] Reference Figure 2There are two groups of rotating rods 3 and rotating plates 4. The two groups of rotating rods 3 are arranged in parallel and at intervals. The two groups of rotating plates 4 rotate synchronously in opposite directions and then enter the unloading part 22. By setting up two groups of rotating plates 4 to rotate synchronously, the dredging efficiency of the raw materials is improved.

[0051] Reference Figure 5 、 Figure 6 、 Figure 7 The rotating plate 4 includes a middle portion 41 and a telescopic portion 42. Two telescopic portions 42 are provided, and the two telescopic portions 42 are respectively arranged at the ends of the middle portion 41. The telescopic portions 42 slide in cooperation with the middle portion 41. The sliding direction of the telescopic portions 42 relative to the middle portion 41 is the same as the sliding direction of the rotating plate 4 in the slide groove 6. An elastic member 411 is provided in the middle portion 41. The elastic member 411 is mounted on a spring and connected to the telescopic portion 42. The elastic member 411 is used to drive the telescopic portion 42 to slide in a direction away from the middle portion 41.

[0052] Reference Figure 2 When the two sets of rotating plates 4 rotate toward each other, their telescopic portions 42 abut against each other. As the plates 4 rotate, the telescopic portions 42 slide relative to the intermediate portion 41, compressing the first elastic member 411. Meanwhile, the telescopic portions 42 maintain their abutment, pushing the raw material into the unloading portion 22 as the plates 4 rotate. This also reduces interference between the two sets of rotating plates 4. In this embodiment, the second power member 52 utilizes a self-locking motor. After adjusting the position of the plates 4, this reduces the possibility of the two sets of rotating plates 4 sliding relative to the rotating rod 3 when in abutment.

[0053] Reference Figure 6 、 Figure 7 The rack 533 includes a fixed portion 534 and a sliding portion 535. The fixed portion 534 is arranged in the middle portion 41, and the sliding portion 535 is arranged in the telescopic portion 42. An inclined surface 536 is provided at one end of the sliding portion 535 close to the fixed portion 534. The sliding portion 535 abuts against the fixed portion 534 through the inclined surface 536. The sliding portion 535 slides in the telescopic portion 42 along a direction perpendicular to the rack 533. A second elastic member 537 is provided in the telescopic portion 42. The second elastic member 537 is set as a spring. The second elastic member 537 is connected to the sliding portion 535. The second elastic member 537 is used to drive the inclined surface 536 to abut against the fixed portion 534.

[0054] In the initial state, the second spring 537 drives the sliding portion 535 to move, causing the first bevel 536 to abut against the fixed portion 534. At this point, the sliding portion 535 and the fixed portion 534 are aligned, and the gear 532 can cooperate with the fixed portion 534 and the sliding portion 535 to adjust the position of the rotating plate 4. When the two sets of rotating plates 4 abut, the telescopic portion 42 slides relative to the middle portion 41, driving the synchronized position on the first bevel 536 to abut against the fixed portion 534. Simultaneously, the sliding portion 535 slides and compresses the second spring 537 until the first bevel 536 separates from the fixed portion 534. At this point, the sliding portion 535 moves to one side of the fixed portion 534, allowing the telescopic portion 42 to slide relative to the middle portion 41, thereby reducing the interference of the rack 533 with the movement of the telescopic portion 42. When the rotating plate 4 rotates to the same inclination angle as the guide part 21, the telescopic parts 42 on the two groups of rotating plates 4 are separated, and the elastic member 1 411 and the elastic member 2 537 respectively drive the telescopic part 42 and the sliding part 535 to move to the initial position, and the sliding part 535 moves again to be in the same straight line with the fixed part 534, and the gear 532 rotates to adjust the position of the rotating plate 4.

[0055] When the gear 532 drives the rotating plate 4 to move, the second elastic member 537 drives the sliding portion 535 and the fixing portion 534 to be aligned on the same straight line, so as to ensure the stability of the rotating plate 4 during movement.

[0056] Reference Figure 6 、 Figure 9 A stopper 9 is provided on the transmission rod 531 , and the stopper 9 rotates with the transmission rod 531 . A bending portion 91 is provided on the stopper 9 , and the bending portion 91 slides and abuts against the side of the rack 533 away from the gear 532 .

[0057] After adjusting the position of the rotating plate 4, the bent portion 91 moves to the sliding portion 535, securing the sliding portion 535 near the rotating rod 3 to prevent the sliding portion 535 from sliding and separating from the fixing portion 534. Only the sliding portion 535 near the other set of rotating plates 4 is allowed to slide. That is, when the telescopic portion 42 slides, the gear 532 remains engaged with the corresponding sliding portion 535, ensuring the stability of the gear 532 and the sliding portion 535, and improving the stability of the two sets of rotating plates 4 when they are in contact.

[0058] Reference Figure 2 、 Figure 10A push plate 23 is provided within the hopper 2. The push plate 23 is positioned above the guide portion 21 and is arranged vertically. The push plate 23 slides horizontally within the hopper 2. A spring 24 is provided between the push plate 23 and the hopper 2, connecting the two. The spring 24 is configured as a spring, and the spring 24 drives the push plate 23 to move flush with the upper end of the guide portion 21. When the rotating plate 4 moves from the discharge portion 22 into the guide portion 21, the end of the rotating plate 4 abuts against the push plate 23, pushing the push plate 23 to move. The push plate 23 then moves and compresses the spring 24. The rotating plate 4 then rotates and separates from the push plate 23. The spring 24 then moves the push plate 23 to its initial position, thereby pushing the raw materials within the hopper 2 and further reducing the risk of raw materials becoming clogged.

[0059] The implementation principle of the present invention is as follows: the rotating plate 4 rotates from the guide part 21 to the discharge part 22 to push the raw materials into the discharge part 22 to reduce the phenomenon of material blockage, and then the rotating plate 4 moves in the chute 6 and enters the guide part 21 again, thereby increasing the range covered by the rotating plate 4 during rotation. At the same time, when the rotating plate 4 moves through the rotating rod 3, the rotating rod 3 can scrape off the raw materials adhering to the side of the rotating plate 4, clean the rotating plate 4, improve its dredging and pushing effect of raw materials, and improve the loading efficiency.

[0060] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A feeding device for a plastic extruder, comprising a hopper (2), characterized in that: The hopper (2) comprises: a guide portion (21) arranged outwardly and tilted, and a discharge portion (22) arranged vertically. The guide portion (21) is arranged above the discharge portion (22). A rotating rod (3) is rotatably mounted at the connection between the guide portion (21) and the discharge portion (22). A chute (6) is provided through the side of the rotating rod (3). A rotating plate (4) is slidably arranged in the chute (6). A driving assembly (5) is provided on the hopper (2) and the rotating rod (3). The driving assembly (5) is respectively connected to the rotating rod (3) and the rotating plate (4) to respectively drive the rotating rod (3) to rotate and drive the rotating plate (4) to slide in the chute (6). The driving assembly (5) drives the rotating plate (4) to move back and forth in the chute (6) so that its two ends are alternately located in the chute (6); The rotating rod (3) drives the rotating plate (4) to rotate into the unloading portion (22) to push the raw materials into the unloading portion (22). When the rotating plate (4) rotates into the unloading portion (22) and has the same inclination angle as the guide portion (21), the driving component (5) drives the rotating plate (4) to move, so that one end of the rotating plate (4) in the chute (6) is separated from the chute (6) and enters the guide portion (21), and the other end enters the chute (6).

2. The feeding device for a plastic extruder according to claim 1, characterized in that: The end of the rotating rod (3) extends to the outside of the hopper (2). The driving assembly (5) includes: a power member 1 (51) arranged on the hopper (2), a power member 2 (52) arranged at the end of the rotating rod (3), and a transmission member (53) connected to the rotating plate (4). The output end of the power member 1 (51) is connected to the rotating rod (3) to drive the rotating rod (3) to rotate, and the output end of the power member 2 (52) is connected to the transmission member (53) to move the rotating plate (4).

3. The feeding device for a plastic extruder according to claim 2, characterized in that: The transmission member (53) comprises: a transmission rod (531) connected to the output end of the power member (51), a gear (532) coaxially connected to the transmission rod (531), and a rack (533) meshing with the gear (532), wherein the rack (533) is arranged in the rotating plate (4) and is arranged along the sliding direction of the rotating plate (4).

4. The feeding device for a plastic extruder according to claim 3, characterized in that: Two groups of rotating rods (3) and rotating plates (4) are provided, and the two groups of rotating plates (4) rotate synchronously in opposite directions.

5. The feeding device for a plastic extruder according to claim 4, characterized in that: The rotating plate (4) includes: a middle portion (41) and telescopic portions (42) arranged at both ends of the middle portion (41); the telescopic portion (42) is slidably assembled on the middle portion (41); an elastic member (411) connected to the telescopic portion (42) is arranged in the middle portion (41); the elastic member (411) is used to drive the telescopic portion (42) to slide away from the middle portion (41); when the two sets of rotating plates (4) are rotated to a horizontal position, the telescopic portions (42) thereof abut against each other and compress the elastic member (411).

6. The feeding device for a plastic extruder according to claim 5, characterized in that: The rack (533) includes: a fixed portion (534) arranged in the middle portion (41), and a sliding portion (535) arranged in the telescopic portion (42). The end of the sliding portion (535) is provided with an inclined surface (536). When the inclined surface (536) abuts against the fixed portion (534), the sliding portion (535) and the fixed portion (534) are on the same straight line. The sliding portion (535) is slidably arranged in the telescopic portion (42) along a direction perpendicular to the rack (533). The telescopic portion (42) is provided with a second elastic member (537). The second elastic member (537) is used to drive the inclined surface (536) to abut against the fixed portion (534). When the telescopic portion (42) slides relative to the fixed portion (534), the sliding portion (535) slides and compresses the elastic member (537), and at the same time, the inclined surface (536) is separated from the fixed portion (534).

7. The feeding device for a plastic extruder according to claim 6, characterized in that: A stopper (9) is rotatably provided on the transmission rod (531), and a bent portion (91) is provided on the stopper (9). The bent portion (91) is in sliding contact with a side of the rack (533) that is away from the gear (532).

8. The feeding device for a plastic extruder according to claim 1, characterized in that: Both side walls of the chute (6) are provided with mounting grooves (61), a blocking block (7) is slidably provided in the mounting groove (61), a spring member (71) is provided in the mounting groove (61), the spring member (71) is connected to the blocking block (7) and is used to drive the blocking block (7) to move into the chute (6), the blocking block (7) moves into the chute (6) and is used to block the chute (6), a second inclined surface (72) is provided on one side of the blocking block (7) close to the inside of the chute (6), and the rotating plate (4) slides until it abuts against the second inclined surface (72) to drive the blocking block (7) to move into the mounting groove (61).

9. The feeding device for a plastic extruder according to claim 1, characterized in that: A push plate (23) is vertically arranged in the hopper (2), and the push plate (23) is arranged above the guide part (21). The push plate (23) is horizontally slidably assembled in the hopper (2). A spring member (24) is arranged between the push plate (23) and the hopper (2). The spring member (24) is used to drive the push plate (23) to be flush with the upper end of the guide part (21). After the rotating plate (4) moves into the guide part (21), it abuts against the push plate (23) and drives the push plate (23) to move. After the rotating plate (4) is separated from the push plate (23), the spring member (24) drives it to move to the initial position and pushes the raw material.

10. The feeding device for a plastic extruder according to claim 3, characterized in that: The side surface of the rotating plate (4) is in sliding contact with the inner wall of the hopper (2), and a clearance groove (8) is provided on one side of the rotating plate (4) close to the inner wall of the hopper (2). The transmission rod (531) passes through the clearance groove (8) and is connected to the gear (532).

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