An automatic cutting twin-screw extruder for TPE pellet production

Abstract

This invention discloses an automatic cutting twin-screw extruder for TPE granule production, belonging to the technical field of twin-screw extruders. The invention includes a processing table, with an extruder body mounted on top of the processing table. An extrusion head is fixed to the discharge end of the extruder body, and an discharge shell is fixed to the outside of the extrusion head. A cooling fan is fixed to the top of the discharge shell, and a cutting device is installed inside the discharge shell. The cutting device includes a rotating shaft horizontally rotatably mounted inside the discharge shell, driven by a motor. A disc is fixed to the outside of the rotating shaft, and a sliding rod is slidably mounted with uniformly transversely extending through the outer circumference of the disc. This invention, through the inclusion of an anti-adhesion device, allows the convex ball rod, disc, and hinge rod to work together to drive an L-shaped scraper to scrape off TPE granules adhering to the cutter surface, thereby preventing TPE granules from adhering to the cutter surface and affecting the cutting effect.

Description

Technical Field

[0001] This invention relates to the field of twin-screw extruder technology, specifically to an automatic cutting twin-screw extruder for TPE granule production. Background Technology

[0002] The twin-screw extruder for TPE granule production is a high-efficiency plastic processing equipment, primarily used for the extrusion molding of thermoplastic elastomers (TPE). Its twin-screw design ensures uniform mixing, plasticizing, and melting of the material during extrusion, making it suitable for processing various TPE formulations. The equipment features a robust temperature control system and a high-precision control system, enhancing production efficiency and ensuring consistent product quality.

[0003] Chinese patent CN215661765U discloses a twin-screw extruder for producing plastic granules, including a self-heating barrel. A screw assembly is installed inside the barrel. A feed box is installed at one end of the barrel, and a discharge port is provided at the other end. An extrusion plate is installed at the bottom of the discharge port, and a cutting plate is slidably mounted on the bottom of the extrusion plate. A slidable smearing assembly is installed on the bottom of the cutting plate, comprising two symmetrically distributed smearing plates. This patent, by installing a slidable smearing assembly on the bottom of the cutting plate, allows the smearing assembly to slide along the bottom of the cutting plate after each cut, resulting in a reciprocating sliding state. This prevents the cut plastic granules from adhering to the cutting plate when they fall, thus avoiding clogging the through-holes and ensuring the normal falling of subsequent granules, thereby guaranteeing the production progress of plastic granules.

[0004] However, current twin-screw extruders have the following problems: During the process of cutting the extruded TPE into granules, the TPE material has strong adhesion at high temperatures, especially when the temperature is too high, TPE becomes more soft and sticky. Therefore, the TPE granules easily adhere to the surface of the blades. The adhesion of TPE granules to the blade surface affects the cutting effect, resulting in uneven granule cutting, or even incomplete cutting or granule accumulation, which in turn affects the continuity and efficiency of production. Therefore, we propose an automatic cutting twin-screw extruder for TPE granule production. Summary of the Invention

[0005] This invention provides an automatic cutting twin-screw extruder for TPE granule production, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic cutting twin-screw extruder for TPE granule production, comprising a processing table, an extruder body mounted on top of the processing table, an extrusion head fixed at the discharge end of the extruder body, a discharge shell fixed outside the extrusion head, a cooler fixed on top of the discharge shell, a cutting device inside the discharge shell, the cutting device comprising a rotating shaft horizontally rotatably mounted inside the discharge shell, the rotating shaft being driven by a motor, a disc fixed outside the rotating shaft, a sliding rod slidably mounted with uniformly transversely penetrating the outer circumference of the disc, a cutter fixed on the side of the sliding rod near the extrusion head, and a spring provided between the cutter and the disc, the cutter contacting the outer wall of the discharge end of the extrusion head, and an arc-shaped disk fixedly mounted inside the discharge shell via a bracket, a convex ball rod slidably mounted with uniformly transversely penetrating the outer circumference of the disc. A spring is provided between the convex ball rod and the disc. A hinge rod is hinged to the side of the convex ball rod near the extrusion head, and an L-shaped shovel is hinged to the side of the hinge rod away from the convex ball rod. The L-shaped shovel is slidably installed on the outer wall of the cutter. An arc block is fixed at the top of the side of the arc block disc near the extrusion head. The side of the convex ball rod away from the extrusion head is semi-circular. The arc block of the arc block disc is located on the semi-circular movement trajectory of the convex ball rod. An opening is provided in the middle of the arc block disc. The rotating shaft passes through the opening of the arc block disc. The discharge end of the extrusion head and the part corresponding to the arc block of the arc block disc do not have a discharge hole. At the same time, the convex ball rod will also rotate with the disc. When the semi-circular shape of the convex ball rod rotates to the position of the arc block of the arc block disc (that is, the cutter moves to the position where the extrusion head does not have a discharge hole), the arc block of the arc block disc pushes the semi-circular shape of the convex ball rod, causing the convex ball rod to move towards the cutter. The convex ball rod pushes the hinge rod, causing the L-shaped shovel to move on the outer wall of the cutter.

[0007] According to the above technical solution, a liquid storage shell is fixed to the outer wall of the cutter, and an injection pipe is provided on the outer wall of the liquid storage shell. An absorbent cotton (first type) is fixed inside the liquid storage shell, and the absorbent cotton (first type) absorbs a nano-anti-stick coating agent. A pressure plate is fixed to the side of the absorbent cotton (first type) away from the cutter, and the pressure plate is slidably installed inside the liquid storage shell. Several connecting pipes are fixed to the side wall of the liquid storage shell, and a receiving shell is fixed to the side of the several connecting pipes away from the liquid storage shell. The receiving shell is embedded in the outer wall of the cutter, and absorbent cotton (second type) is fixed inside the receiving shell. A Z-shaped rod is fixed to the outer wall of the L-shaped spatula, and the horizontal support of the Z-shaped rod is close to the liquid storage shell. One side of the plate is semi-circularly shaped, and a semi-circular strip is fixed on the side of the pressure plate away from the cutter. The semi-circular strip of the pressure plate is located on the semi-circular movement trajectory of the Z-shaped rod. At the same time, each time the L-shaped shovel moves, the L-shaped shovel will drive the Z-shaped rod to move as well. When the semi-circular shape of the Z-shaped rod moves to the position of the semi-circular strip of the pressure plate, the semi-circular shape of the Z-shaped rod pushes the semi-circular strip of the pressure plate, causing the pressure plate to squeeze the first absorbent cotton. The nano anti-stick coating agent adsorbed by the first absorbent cotton is squeezed out, and the nano anti-stick coating agent is transferred to the receiving shell through the connecting pipe and adsorbed by the second absorbent cotton. The nano anti-stick coating agent adsorbed by the second absorbent cotton will wet the contact surface between the L-shaped shovel and the cutter.

[0008] According to the above technical solution, a sorting device is provided at the lower interior of the discharge shell. The sorting device includes an elliptical groove plate and a U-shaped slide. The elliptical groove plate is fixed to the outer wall of the rotating shaft, and an elliptical groove is formed on the outer wall of the elliptical groove plate. The U-shaped slide is slidably installed on the lower inner wall of the discharge shell. Several baffles are evenly and equidistantly fixed on the inner wall of the U-shaped slide. An L-shaped column is fixed to the top of the U-shaped slide. The top of the L-shaped column is slidably installed inside the elliptical groove of the elliptical groove plate. The tops of the baffles are all arc-shaped. During the rotation of the rotating shaft, the elliptical groove plate will also rotate. The elliptical groove of the elliptical groove plate will push the L-shaped column to drive the U-shaped slide to move up and down reciprocally. The U-shaped slide will drive the mesh surface formed by the baffles to move up and down reciprocally. The mesh surface formed by the baffles will screen the TPE particles falling on it.

[0009] According to the above technical solution, the sorting device also includes a triangular plate, which is fixed in the middle of the inner wall of the discharge shell. A U-shaped pressure block is fixed at the bottom of the triangular plate. The TPE particles cut by the cutter will fall to the triangular plate. Then, the TPE particles will fall along the inclined surface of the triangular plate onto the mesh surface formed by several baffles. The triangular plate increases the falling displacement of the TPE particles inside the discharge shell.

[0010] According to the above technical solution, several inclined plates are evenly and equidistantly fixed on both sides of the bottom of the U-shaped pressure block, and the several inclined plates are respectively located between two adjacent baffles. Each time the L-shaped column pulls the U-shaped slide upward, the agglomerated TPE particles are guided by the arc surface of the baffle to the bottom of the U-shaped pressure block. When the L-shaped column pulls the U-shaped slide upward, the U-shaped slide drives the agglomerated TPE particles toward the U-shaped pressure block through the several baffles. The U-shaped pressure block and the inclined plates squeeze the agglomerated TPE particles on the several baffles.

[0011] According to the above technical solution, U-shaped carriages are slidably installed on both sides of the top of the U-shaped carriage. The U-shaped carriages are hinged to the bottom of the triangular plate by push rods. Several push columns are evenly and equidistantly fixed at the bottom of the U-shaped carriage. The push columns are located between two adjacent stop columns. Each time the L-shaped column pushes the U-shaped carriage downward, the U-shaped carriage drives the U-shaped carriage to move downward. During this process, the push rod pulls the U-shaped carriage to move along the top of the U-shaped carriage towards the center of the U-shaped carriage. The U-shaped carriage drives the push columns to move, thereby pushing the TPE particles accumulated on both sides of the stop columns towards the center of the stop columns.

[0012] This invention provides an automatic cutting twin-screw extruder for TPE granule production. It has the following advantages:

[0013] (1) The present invention, through the setting of the anti-adhesion device, enables the convex ball rod, disc and hinge rod to drive the L-shaped shovel to scrape off the TPE particles adhering to the surface of the cutter, thereby avoiding the problem of TPE particles adhering to the surface of the cutter and affecting the cutting effect of the cutter; each time the L-shaped shovel moves, the L-shaped shovel, Z-shaped rod and pressure plate work together to drive the nano anti-adhesion coating agent adsorbed by the first adsorption cotton to be transferred to the receiving shell through the connecting pipe and adsorbed by the second adsorption cotton. The nano anti-adhesion coating agent adsorbed by the second adsorption cotton will wet the contact surface between the L-shaped shovel and the cutter when it moves to the position of the second adsorption cotton, so that the L-shaped shovel will apply the nano anti-adhesion coating agent to the surface of the cutter in the next movement. The nano anti-adhesion coating agent forms a thin and uniform protective film on the surface of the cutter, reducing the direct contact between the TPE particles and the surface of the cutter. This film has a low coefficient of friction, thereby effectively preventing TPE particles from adhering to the surface of the cutter.

[0014] (2) By setting up a sorting device, the triangular plate increases the falling displacement of TPE particles inside the discharge shell, which allows the air cooler to cool the TPE particles for a longer time. This helps to better reduce the temperature of the TPE particles and prevent them from becoming too soft or sticking together due to high temperature. At the same time, the rotating shaft, elliptical groove plate, L-shaped column, U-shaped slide, and baffle work together to screen the TPE particles falling on the baffle. The TPE particles that are clustered and stuck together will be intercepted on the mesh formed by several baffles, thus ensuring that the screened TPE particles meet the quality standards. At the same time, the baffle, L-shaped column, U-shaped slide, and U-shaped pressure block work together to squeeze the clustered TPE particles on several baffles. The clustered TPE particles will be subjected to pressure, which will cause the clustered TPE particles to disperse from the agglomerated state. The squeezing action helps to break the adhesion between TPE particles and improve the dispersion and uniformity of TPE particles.

[0015] (3) By setting up the U-shaped slide, the L-shaped column rod and the push rod, the push rod pulls the U-shaped slide to push the push rod to push the TPE particles piled on both sides of the baffle towards the center of the baffle. The push rod can make the TPE particles more evenly distributed on the mesh surface formed by several baffles, thereby improving the efficiency of screening TPE particles on the mesh surface formed by several baffles. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the entire invention. Figure 2 ;

[0018] Figure 3 This is a partial structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the anti-adhesion device of the present invention;

[0020] Figure 5 This is a partial structural diagram of the anti-adhesion device of the present invention. Figure 1 ;

[0021] Figure 6 This is a partial structural diagram of the anti-adhesion device of the present invention. Figure 2 ;

[0022] Figure 7 This is a partial structural diagram of the anti-adhesion device of the present invention. Figure 3 ;

[0023] Figure 8 This is a schematic diagram of the sorting device of the present invention;

[0024] Figure 9 This is a partial structural diagram of the sorting device of the present invention. Figure 1 ;

[0025] Figure 10 This is a partial structural diagram of the sorting device of the present invention. Figure 2 ;

[0026] Figure 11 This is a schematic diagram of the spiral carriage of the present invention;

[0027] Figure 12 This is a schematic diagram of the triangular plate of the present invention.

[0028] In the diagram: 1. Processing table; 2. Extruder body; 3. Extrusion head; 4. Discharge shell; 5. Cooling fan; 6. Cutting device; 61. Rotating shaft; 62. Disc; 63. Slide rod; 64. Cutter; 65. Arc block disc; 66. Convex ball rod; 67. Hinge rod; 68. L-shaped shovel plate; 69. Liquid storage shell; 610. Pressure plate; 611. Connecting pipe; 612. Receiving shell; 613. Absorbent cotton one; 614. Absorbent cotton two; 615. Z-shaped rod; 7. Sorting device; 71. Elliptical groove plate; 72. L-shaped column rod; 73. U-shaped slide; 74. Stop column; 75. Triangular plate; 76. U-shaped slide; 77. Push column; 78. Push rod; 79. U-shaped pressure block; 710. Inclined plate. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Please see Figure 1 - Figure 12One embodiment of the present invention is as follows: an automatic cutting twin-screw extruder for TPE granule production, comprising a processing table 1, an extruder body 2 disposed on the top of the processing table 1, an extrusion head 3 fixed at the discharge end of the extruder body 2, an discharge shell 4 fixed outside the extrusion head 3, a cooler 5 fixed on the top of the discharge shell 4, a cutting device 6 disposed inside the discharge shell 4, the cutting device 6 comprising a rotating shaft 61 horizontally rotatably mounted inside the discharge shell 4, the rotating shaft 61 being driven by a motor, a disc 62 fixed outside the rotating shaft 61, a slide rod 63 uniformly horizontally penetrating and slidably mounted on the outer circumference of the disc 62, a cutter 64 fixed on the side of the slide rod 63 near the extrusion head 3, and a spring provided between the cutter 64 and the disc 62, the cutter 64 contacting the outer wall of the discharge end of the extrusion head 3, and the discharge shell Inside the cutter 64, an arc block disk 65 is fixedly installed by a bracket. A convex ball rod 66 is slidably installed with uniform transverse circumference through the outer wall of the disk 62, and a spring is provided between the convex ball rod 66 and the disk 62. A hinge rod 67 is hinged to the side of the convex ball rod 66 near the extruder head 3, and an L-shaped spade plate 68 is hinged to the side of the hinge rod 67 away from the convex ball rod 66. The L-shaped spade plate 68 is slidably installed on the outer wall of the cutter 64. An arc block is fixed at the top of the side of the arc block disk 65 near the extruder head 3. The side of the convex ball rod 66 away from the extruder head 3 is semi-circular. The arc block of the arc block disk 65 is located on the semi-circular movement trajectory of the convex ball rod 66. An opening is opened in the middle of the arc block disk 65, and the rotating shaft 61 passes through the opening of the arc block disk 65. The discharge end of the extruder head 3 and the part corresponding to the arc block of the arc block disk 65 do not have a discharge hole (e.g., Figure 3 As shown in the diagram, the arc block of the arc block disk 65 pushes the semi-circular shape of the convex ball rod 66, causing the convex ball rod 66 to move towards the cutter 64. The convex ball rod 66 pushes the hinge rod 67, causing the L-shaped shovel plate 68 to move on the outer wall of the cutter 64. This allows the L-shaped shovel plate 68 to scrape off the TPE particles adhering to the surface of the cutter 64, thus avoiding the problem of TPE particles adhering to the surface of the cutter 64 and affecting the cutting effect of the cutter 64.

[0031] A liquid storage shell 69 is fixed to the outer wall of the cutter 64. An injection pipe is provided on the outer wall of the liquid storage shell 69. An absorbent cotton 613 is fixed inside the liquid storage shell 69, containing a nano-anti-stick coating agent. A pressure plate 610 is fixed to the side of the absorbent cotton 613 away from the cutter 64, and the pressure plate 610 is slidably installed inside the liquid storage shell 69. Several connecting pipes 611 are fixed to the side wall of the liquid storage shell 69. A receiving shell 612 is fixed to the side of the connecting pipes 611 away from the liquid storage shell 69, and the receiving shell 612 is embedded in the outer wall of the cutter 64. An absorbent cotton 614 is fixed inside the receiving shell 612. The outer wall of the L-shaped spatula 68... A Z-shaped rod 615 is fixed, and the side of the Z-shaped rod 615 closest to the liquid storage shell 69 is set in a semi-arc shape. A semi-circular strip is fixed on the side of the pressure plate 610 away from the cutter 64. The semi-circular strip of the pressure plate 610 is located on the semi-arc movement trajectory of the Z-shaped rod 615. With the above structure, the L-shaped spatula 68 will apply a nano anti-stick coating agent to the surface of the cutter 64 during the movement. The nano anti-stick coating agent forms a thin and uniform protective film on the surface of the cutter 64, reducing the direct contact between TPE particles and the surface of the cutter 64. This film has a low coefficient of friction, thereby effectively preventing TPE particles from adhering to the surface of the cutter 64.

[0032] During use, when the TPE material is extruded from the extruder head 3 by the extruder body 2, the operator drives the rotating shaft 61 to rotate via the motor and starts the cooling fan 5. The rotating shaft 61 drives the disc 62 to rotate, and the disc 62 drives the cutter 64 to rotate via the slide rod 63. During the rotation, the cutter 64 cuts the TPE material extruded from the extruder head 3. The cooling fan 5 cools the cut TPE granules, thereby realizing the pelletizing operation of the TPE material. At the same time, the convex ball rod 66 also rotates with the disc 62. When the semi-circular shape of the convex ball rod 66 rotates to the arc block disc... When the arc block of the arc block disk 65 is in position 65 (i.e., the cutter 64 moves to the position where the extruder 3 does not have a discharge hole), the arc block of the arc block disk 65 pushes the semi-circular shape of the convex ball rod 66, causing the convex ball rod 66 to move towards the cutter 64. The convex ball rod 66 pushes the hinge rod 67, causing the L-shaped scraper plate 68 to move on the outer wall of the cutter 64. This allows the L-shaped scraper plate 68 to scrape off the TPE particles adhering to the surface of the cutter 64, thus avoiding the problem of TPE particles adhering to the surface of the cutter 64 and affecting the cutting effect of the cutter 64. When the arc block of the arc block disk 65 does not push the semi-circular shape of the convex ball rod 66, the convex ball... Rod 66 will reset under the corresponding spring force, and the convex ball rod 66 drives the L-shaped shovel plate 68 to reset via the hinge rod 67; at the same time, each time the L-shaped shovel plate 68 moves, the L-shaped shovel plate 68 will drive the Z-shaped rod 615 to move accordingly. When the semi-circular shape of the Z-shaped rod 615 moves to the semi-circular strip position of the pressure plate 610, the semi-circular shape of the Z-shaped rod 615 pushes the semi-circular strip of the pressure plate 610, causing the pressure plate 610 to squeeze the absorbent cotton 613. The nano anti-stick coating agent adsorbed by the absorbent cotton 613 is squeezed out, and the nano anti-stick coating agent is transferred to the receiving shell through the connecting pipe 611. The nano-anti-stick coating agent adsorbed by the cotton 614 in 612 will wet the contact surface between the L-shaped shovel 68 and the cutter 64 when it moves to the position of the cotton 614. This will cause the L-shaped shovel 68 to apply the nano-anti-stick coating agent to the surface of the cutter 64 during the next movement. The nano-anti-stick coating agent forms a thin and uniform protective film on the surface of the cutter 64, reducing the direct contact between the TPE particles and the surface of the cutter 64. This film has a low coefficient of friction, thus effectively preventing the TPE particles from adhering to the surface of the cutter 64.

[0033] Please see Figure 1 - Figure 12Based on the above embodiments, in another embodiment of the present invention, a sorting device 7 is provided inside the lower part of the discharge shell 4. The sorting device 7 includes an elliptical groove plate 71 and a spiral slide 73. The elliptical groove plate 71 is fixed to the outer wall of the rotating shaft 61, and an elliptical groove is formed on the outer wall of the elliptical groove plate 71. The spiral slide 73 is slidably installed on the lower inner wall of the discharge shell 4. A plurality of baffles 74 are evenly and equidistantly fixed on the inner wall of the spiral slide 73. An L-shaped column rod 72 is fixed to the top of the spiral slide 73, and the top of the L-shaped column rod 72 is slidably installed. Inside the elliptical groove of the elliptical groove plate 71, the tops of several baffles 74 are all curved. Through the above structure, the mesh formed by the baffles 74 will screen the TPE particles falling on it. The TPE particles that are stuck together will be intercepted on the mesh formed by the baffles 74, thereby ensuring that the screened TPE particles meet the quality standards. At the same time, due to the curved top of the baffles 74, the TPE particles that are stuck together will be guided to the middle position of the baffles 74 by the curved surface of the baffles 74.

[0034] The sorting device 7 also includes a triangular plate 75, which is fixed in the middle of the inner wall of the discharge shell 4. A U-shaped pressure block 79 is fixed at the bottom of the triangular plate 75. Through the above structure, the triangular plate 75 increases the falling displacement stroke of the TPE particles inside the discharge shell 4. This allows the air cooler 5 to cool the TPE particles for a longer time, which helps to better reduce the temperature of the TPE particles and prevent the TPE particles from becoming too soft or sticking together due to high temperature.

[0035] Several inclined plates 710 are evenly and equidistantly fixed on both sides of the bottom of the U-shaped pressure block 79, and the inclined plates 710 are respectively located between two adjacent baffles 74. Each time the L-shaped column rod 72 pulls the U-shaped slide 73 upward, the above structure allows the U-shaped pressure block 79 and the inclined plates 710 to squeeze the TPE particles that are clustered on the baffles 74. The clustered TPE particles will be subjected to pressure, thereby causing the clustered TPE particles to disperse from the agglomerated state. The squeezing action helps to break the adhesion between TPE particles and improve the dispersion and uniformity of TPE particles.

[0036] U-shaped carriages 76 are slidably installed on both sides of the top of the U-shaped carriage 73. The U-shaped carriages 76 are hinged to the bottom of the triangular plate 75 via push rods 78. Several push posts 77 are evenly and equidistantly fixed at the bottom of the U-shaped carriages 76. The push posts 77 are located between two adjacent baffle posts 74. Each time the L-shaped column 72 pushes the U-shaped carriage 73 downward, the push posts 77 push the TPE particles accumulated on both sides of the baffle posts 74 toward the center of the baffle posts 74. The push posts 77 can make the TPE particles more evenly distributed on the mesh surface formed by the baffle posts 74, thereby improving the efficiency of screening TPE particles on the mesh surface formed by the baffle posts 74.

[0037] During operation, the TPE granules cut by the cutter 64 fall onto the triangular plate 75. Then, the TPE granules fall along the inclined surface of the triangular plate 75 onto the mesh surface formed by several baffles 74. The triangular plate 75 increases the falling displacement of the TPE granules inside the discharge shell 4, allowing the cooling fan 5 to cool the TPE granules for a longer period. This helps to better reduce the temperature of the TPE granules and prevent them from becoming too soft or sticking together due to high temperatures. During the rotation of the shaft 61, the elliptical groove plate 71 also rotates, and the elliptical groove of the elliptical groove plate 71 pushes the L-shaped columns... The lever 72 drives the loop-shaped carriage 73 to move up and down reciprocally. The loop-shaped carriage 73 drives the mesh surface formed by several guide posts 74 to move up and down reciprocally. The mesh surface formed by the guide posts 74 filters the TPE particles falling on it. Clumps of TPE particles are intercepted on the mesh surface formed by the guide posts 74, thus ensuring that the filtered TPE particles meet the quality standards. At the same time, due to the arc surface of the top of the guide post 74, clumps of TPE particles are guided to the middle position of the guide post 74 by the arc surface of the guide post 74. Each time the L-shaped lever 72 pulls the loop-shaped carriage 73 upward, it moves the TPE particles back up. At this time, the clustered TPE particles are guided by the arc surface of the baffle 74 to directly below the U-shaped pressure block 79. When the L-shaped column 72 pulls the U-shaped slide 73 upward, the U-shaped slide 73, through several baffles 74, causes the clustered TPE particles to move towards the U-shaped pressure block 79. The U-shaped pressure block 79 and the inclined plate 710 squeeze the clustered TPE particles on the baffles 74. The clustered TPE particles are subjected to pressure, which causes the clustered TPE particles to disperse from their agglomerated state. The squeezing action helps to break the adhesion between TPE particles and improve the dispersion and uniformity of TPE particles. In each L-shaped... When the column rod 72 pushes the U-shaped slide 73 downward, the U-shaped slide 73 drives the U-shaped slide 76 to move downward as well. During this process, the push rod 78 pulls the U-shaped slide 76 to move along the top of the U-shaped slide 73 towards the center of the U-shaped slide 73. The U-shaped slide 76 drives the push column 77 to move as well, so that the push column 77 pushes the TPE particles accumulated on both sides of the baffle 74 towards the center of the baffle 74. The push column 77 can make the TPE particles more evenly distributed on the mesh surface formed by several baffles 74, thereby improving the efficiency of screening TPE particles on the mesh surface formed by several baffles 74.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic cutting twin-screw extruder for TPE granule production, comprising a processing table (1), an extruder body (2) being disposed on the top of the processing table (1), and an extrusion head (3) being fixed at the discharge end of the extruder body (2), characterized in that: An outlet shell (4) is fixed to the outside of the extrusion head (3). A cool air blower (5) is fixed to the top of the outlet shell (4). A cutting device (6) is provided inside the outlet shell (4). The cutting device (6) includes a rotating shaft (61) that is horizontally rotatably installed inside the outlet shell (4). The rotating shaft (61) is driven by a motor. A disc (62) is fixed to the outside of the rotating shaft (61). A slide rod (63) is slidably installed horizontally through the outer circumference of the disc (62). A cutter (64) is fixed to the side of the slide rod (63) near the extrusion head (3). A spring is provided between the cutter (64) and the disc (62). An arc block disc (65) is fixedly installed inside the discharge shell (4) by a bracket. A convex ball rod (66) is slidably installed through the outer circumference of the disc (62). A spring is provided between the convex ball rod (66) and the disc (62). A hinge rod (67) is hinged to the side of the convex ball rod (66) near the extrusion head (3). An L-shaped shovel plate (68) is hinged to the side of the hinge rod (67) away from the convex ball rod (66). The L-shaped shovel plate (68) is slidably installed on the outer wall of the cutter (64). The outer wall of the cutter (64) is fixed with a liquid storage shell (69). The outer wall of the liquid storage shell (69) is provided with an injection pipe. The inside of the liquid storage shell (69) is fixed with absorbent cotton (613). The absorbent cotton (613) is filled with nano anti-stick coating agent. The side of the absorbent cotton (613) away from the cutter (64) is fixed with a pressure plate (610). The pressure plate (610) is slidably installed inside the liquid storage shell (69). The side wall of the liquid storage shell (69) is fixed with several connecting pipes (611). The side of the several connecting pipes (611) away from the liquid storage shell (69) is fixed with a receiving shell (612). The receiving shell (612) is embedded in the outer wall of the cutter (64). The inside of the receiving shell (612) is fixed with absorbent cotton (614). The outer wall of the L-shaped spatula (68) is fixed with a Z-shaped rod (615). The Z-shaped rod (615) is semi-arc-shaped on the side near the liquid storage shell (69), and a semi-circular strip is fixed on the side of the pressure plate (610) away from the cutter (64). The semi-circular strip of the pressure plate (610) is located on the semi-arc-shaped movement trajectory of the Z-shaped rod (615).

2. The automatic cutting twin-screw extruder for TPE granule production according to claim 1, characterized in that: The top of the arc block disk (65) near the extrusion head (3) is fixed with an arc block, and the side of the convex ball rod (66) away from the extrusion head (3) is semi-circular. The arc block of the arc block disk (65) is located on the semi-circular motion trajectory of the convex ball rod (66).

3. The automatic cutting twin-screw extruder for TPE granule production according to claim 1, characterized in that: The arc block disk (65) has an opening in the middle, the rotating shaft (61) passes through the opening of the arc block disk (65), the cutter (64) contacts the outer wall of the discharge end of the extrusion head (3), and the discharge end of the extrusion head (3) and the part corresponding to the arc block of the arc block disk (65) are not provided with discharge holes.

4. The automatic cutting twin-screw extruder for TPE granule production according to claim 1, characterized in that: A sorting device (7) is provided at the bottom of the discharge shell (4). The sorting device (7) includes an elliptical groove plate (71) and a spiral slide (73). The elliptical groove plate (71) is fixed on the outer wall of the rotating shaft (61). An elliptical groove is provided on the outer wall of the elliptical groove plate (71). The spiral slide (73) is slidably installed on the inner wall below the discharge shell (4). Several baffles (74) are evenly and equidistantly fixed on the inner wall of the spiral slide (73). An L-shaped column (72) is fixed on the top of the spiral slide (73). The top of the L-shaped column (72) is slidably installed inside the elliptical groove of the elliptical groove plate (71).

5. The automatic cutting twin-screw extruder for TPE granule production according to claim 4, characterized in that: The tops of several of the aforementioned stop posts (74) are all curved.

6. The automatic cutting twin-screw extruder for TPE granule production according to claim 4, characterized in that: The sorting device (7) also includes a triangular plate (75), which is fixed in the middle of the inner wall of the discharge shell (4), and a U-shaped pressure block (79) is fixed at the bottom of the triangular plate (75).

7. The automatic cutting twin-screw extruder for TPE granule production according to claim 6, characterized in that: The bottom sides of the U-shaped pressure block (79) are evenly and equidistantly fixed with several inclined plates (710), and the several inclined plates (710) are respectively located between two adjacent stop posts (74).

8. The automatic cutting twin-screw extruder for TPE granule production according to claim 6, characterized in that: The top two sides of the U-shaped slide (73) are slidably mounted with U-shaped slides (76). The bottom of the U-shaped slide (76) and the triangular plate (75) are hinged together by push rods (78). The bottom of the U-shaped slide (76) is evenly and equidistantly fixed with several push posts (77). The push posts (77) are located between two adjacent stop posts (74).

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