Pelletizing equipment for thermoplastic elastomer processing

Abstract

The invention provides granulation equipment for thermoplastic elastomer processing, belongs to the technical field of granulation equipment, and aims to solve the problem that cut-off thermoplastic elastomer particles are easy to adhere to a cutter to influence cutting-off of subsequent materials when an existing granulation device cuts off a thermoplastic elastomer material which is initially set after melting by using the rotary cutter. A molten thermoplastic elastomer material enters the inverted-T-shaped cylinder from the feeding pipe, the motor drives the rotating shaft to rotate, the rotating shaft drives the Z-shaped rod and the vertical supporting rod of the stirring rod to stir the material and drives the auxiliary scraper to rotate at the same time, and the extrusion rotating cylinder on the auxiliary scraper extrudes the material from the extrusion hole of the extrusion part under the action of rotating centrifugal force. And the rotating shaft rotates, so that the stirring rod drives the movable sleeve to move up and down on the outer wall of the extrusion part through the L-shaped limiting rod and the guide rod, cutting and granulation of the thermoplastic elastomer extruded strip-shaped objects are realized, and the problem that the thermoplastic elastomer extruded strip-shaped objects are easily adhered to the rotating cutter is avoided by reducing the contact with the cut thermoplastic elastomer particles.

Description

Technical Field

[0001] The invention relates to the technical field of granulation equipment, in particular to granulation equipment for processing thermoplastic elastomer. Background Art

[0002] Thermoplastic elastomer is a polymer material that has the characteristics of both rubber and thermoplastics. It shows the high elasticity of rubber at room temperature, and can be melted and processed like thermoplastics at high temperatures. In the processing of plastic particles, the extruder extrude the raw materials through the die outlet, and then cools them with water and pelletizes them to obtain particles. Therefore, for some discarded thermoplastic elastomer materials, the most common environmentally friendly treatment method is to melt them like plastics and then pelletize them for recycling.

[0003] For example, the patent with the announcement number CN218749209U discloses a thermoplastic elastomer modified granulation device, wherein a connection seat is arranged on both sides of the discharge die frame, an auxiliary discharge mechanism is arranged on one side of the discharge die, and the auxiliary discharge mechanism includes a plate body and a connection head, a protection ring corresponding to the discharge die is arranged on one side of the plate body, and a through hole corresponding to the protection ring is opened on the other side of the plate body. By plugging the connection head into the connection seat, the protection ring is inserted into the corresponding discharge die, and the discharge die is protected from direct contact with the external environment. When the protection ring is blocked by carbide, the auxiliary discharge mechanism is removed for cleaning. The existing granulation device extrude the molten thermoplastic elastomer material, and after it is initially cooled and has a certain strength, it is cut into particles by a rotating cutter. However, when the cutter cuts the molten and initially solidified thermoplastic elastomer material, there is a large contact surface between the cutter and the cut thermoplastic elastomer particles, so that the cut thermoplastic elastomer particles adhere to the cutter, thereby affecting the subsequent granulation and cutting effect of the extruded thermoplastic elastomer material.

[0004] Therefore, a granulating device for processing thermoplastic elastomer is introduced. Summary of the invention

[0005] The object of the present invention is to provide a granulation equipment for processing thermoplastic elastomers, aiming to solve the problem in the above-mentioned background technology that when the existing granulation device uses a rotating cutter to cut the initially solidified thermoplastic elastomer material after melting, the cut thermoplastic elastomer particles are easily adhered to the cutter and affect its cutting of subsequent materials.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a granulating device for processing thermoplastic elastomers, comprising a base and a mounting base fixedly connected to the top of the base, the top of the mounting base is fixedly connected to a support plate, the top of the support plate is fixedly connected to a convex-shaped barrel, the upper outer wall of the convex-shaped barrel is provided with an inclined lifting groove, the bottom of the inner cavity of the convex-shaped barrel is provided with an outwardly protruding extrusion portion, the side wall of the extrusion portion is evenly spaced with extrusion holes, a movable sleeve is movably sleeved on the outer wall of the extrusion portion, an annular groove is provided on the outer wall at the top of the movable sleeve, a rotating shaft is movably penetrated at the middle of the bottom plate of the convex-shaped barrel, the top of the rotating shaft is movably connected to a stirring rod, the ends of both ends of the stirring rod are respectively bent and extended to the outside of the convex-shaped barrel port, and the bottom of the end of the stirring rod outside the convex-shaped barrel port is The top of the support plate is fixedly connected with an L-shaped limit rod, the end of the bottom cross rod of the L-shaped limit rod is movably engaged in the annular groove, and a guide rod is fixedly connected to the vertical rod side wall of the L-shaped limit rod on one side of the convex cylinder, and the end of the guide rod is movably engaged in the lifting groove, and auxiliary scrapers are fixedly connected to the outer wall of the rotating shaft at the extrusion part at even intervals, and an extrusion drum is movably arranged on the top of the end of the auxiliary scraper, and the extrusion drum is arranged to fit the inner wall of the extrusion part, an isolation cover is fixedly connected to the top edge of the support plate, a feed pipe is fixedly connected to the top of the isolation cover, and the feed pipe port is suspended above the top port of the convex cylinder, a mounting frame is fixedly connected to the top of the base end, and an air cooler is fixedly connected to the top of the mounting frame, the air outlet pipe of the air cooler is fixedly connected and communicated with the side wall of one end of the isolation cover, and the air outlet pipe of the air cooler is arranged corresponding to the extrusion hole.

[0007] Furthermore, discharge ports are respectively provided at the top edges of the support plates on the outer sides of both ends of the convex-shaped cylinder, and the discharge ports are symmetrically arranged with respect to the convex-shaped cylinder. A lower hopper is fixedly connected to the bottom of the support plate below the discharge port, and the lower hopper is suspended on the outer side of the base, and a control chassis is fixedly connected to the top end of the base away from the air cooler.

[0008] Furthermore, the discharge hopper includes a material guiding chute fixedly connected to the bottom of the support plate, the top port of the material guiding chute is connected to the discharge port, and an L-shaped material cutting plate is movably provided on the side wall at one end of the top port of the material guiding chute, an electric telescopic rod is fixedly connected between the side plate of the L-shaped material cutting plate and the side wall of the material guiding chute, leakage holes are evenly provided on the inclined bottom plate of the material guiding chute, a material collecting channel is fixedly connected to the bottom of the inclined bottom plate of the material guiding chute below the leakage holes, and a communicating material discharging valve pipe is fixedly connected to the bottom of the material collecting channel.

[0009] Furthermore, the top end of the rotating shaft is a hollow structure, and a sleeve hole for a movable sleeve stirring rod is opened on the top of the rotating shaft. A protrusion is arranged on the inner wall of one side of the sleeve hole, and the protrusion is movably engaged in the slide groove on the side wall of the stirring rod. The auxiliary scraper is arranged to fit the convex cylinder bottom plate, and a round head with a circular structure is arranged at the end of the auxiliary scraper, and a flexible triangular column is fixedly connected to the side wall of the round head at the end of the auxiliary scraper.

[0010] Furthermore, the stirring rod includes an adjusting rod with a movable sleeve arranged in a sleeve hole at the top end of the rotating shaft, a slide groove matching the protrusion is provided on the outer wall on one side of the adjusting rod, and Z-shaped rods are fixedly connected to the outer walls on both sides of the adjusting rod, and the cross bar at the end of the Z-shaped rod extends to the outside of the top port of the convex cylinder, and the bottom of the end of the Z-shaped rod outside the top port of the convex cylinder is fixedly connected to the L-shaped limit rod, and the bottom of the Z-shaped rod near one end of the rotating shaft is evenly fixedly connected with vertical support rods.

[0011] Furthermore, a thick annular plate is fixedly connected to the inner wall of the isolation cover, the thick annular plate is located above the extrusion hole, the thick annular plate is arranged around the convex cylinder, the movable sleeve is movably engaged with the middle hole of the thick annular plate, an annular cavity is arranged inside the isolation cover at the thick annular plate, one end of the annular cavity is connected to the air outlet tube of the air cooler, and an air jet hole is arranged on the inner side of the annular cavity, the air jet hole port extends obliquely downward to the inner wall of the isolation cover at the bottom of the thick annular plate, and the air jet holes are arranged in a spiral distribution.

[0012] Furthermore, the movable sleeve includes a convex sleeve movably sleeved on the outer wall of the extrusion part, the raised edge of the lower part of the convex sleeve fits with the inner wall of the middle hole of the thick annular plate, piston cylinders are evenly spaced at the bottom edge of the convex sleeve, a movable piston rod is movably sleeved at the bottom of the piston cylinder, and an annular extrusion plate is fixedly connected to the bottom of the movable piston rod, an installation groove is provided at the bottom of the convex sleeve on the inner side of the piston cylinder, a deflection rod is movably provided between the inner walls on both sides of the installation groove, an ejection rod is movably connected to one end of the deflection rod close to the middle hole of the convex sleeve, a guide hole is provided on the annular extrusion plate corresponding to the ejection rod, and the lower end of the ejection rod is movably sleeved in the guide hole.

[0013] Furthermore, compressed gas is filled between the piston cylinder top plate and the end of the movable piston rod. When the end of the movable piston rod is located at the bottom of the piston cylinder, the lower end of the deflection rod is arranged in contact with the top plate of the annular extrusion plate. At this time, the top end of the ejection rod is arranged in contact with the top plate of the mounting groove, and the mounting groove is retracted into the guide hole.

[0014] Furthermore, the bottom of the annular extrusion plate outside the guide hole is evenly spaced with storage cavities, and the annular extrusion plate outside the storage cavity is provided with an installation cavity connected to the storage cavity, an annular worm gear is movably embedded between the upper and lower bottom plates of the installation cavity, a worm is meshed with one side of the annular worm gear, the end of the worm extends through and into the storage cavity, and a spiral strip is fixedly connected to the end of the worm in the storage cavity, a positioning hole is provided at the bottom of the annular extrusion plate corresponding to the middle hole of the annular worm gear, an elastic component is fixedly connected to the lower end of the top plate of the positioning hole, a moving rod is fixedly connected to the bottom of the elastic component, the lower end of the moving rod extends to the bottom of the annular extrusion plate after passing through the middle hole of the annular worm gear, and a spiral guide groove is provided on the outer wall of the moving rod, and the inner wall on one side of the middle hole of the annular worm gear is fixedly connected to a limit block, and the end of the limit block is movably engaged in the spiral guide groove.

[0015] Furthermore, the lower end of the spiral strip extends to the outside of the bottom port of the storage cavity. When the elastic component maintains a normal relaxation state, the lower end of the moving rod extends to the outside of the bottom of the annular extrusion plate, and the limit block is located in the port at the top of the spiral guide groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a granulation equipment for processing thermoplastic elastomers. The equipment cooperates with a rotating shaft, a stirring rod, a movable sleeve, etc., utilizes an auxiliary scraper to drive the extrusion rotating drum to roll against the inner wall of the extrusion part and combines centrifugal force to extrude the molten thermoplastic elastomer from the extrusion hole. The stirring rod rotates to drive the L-shaped limit rod to cooperate with the inclined lifting groove to push the movable sleeve to move back and forth up and down, so as to realize extrusion, cutting and granulation of the thermoplastic elastomer strip extruded from the extrusion hole. The movable sleeve is in line contact with the extrudate, which reduces the contact area and effectively prevents the cut thermoplastic elastomer particles from being deposited and adhered on the bottom plate of the convex cylinder. This avoids the line-surface contact when the traditional granulation equipment uses a rotating cutter to cut the extruded thermoplastic elastomer, thereby preventing the problem that the cut particles are easy to adhere to the cutter and affect the subsequent granulation work. The equipment is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the isolation cover of the present invention;

[0020] Figure 3 It is a schematic diagram of the installation structure of the convex-shaped cylinder, the stirring rod and the movable sleeve of the present invention;

[0021] Figure 4 It is a schematic diagram of the installation structure of the rotating shaft, the stirring rod and the L-shaped limiting rod of the present invention;

[0022] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0023] Figure 6 It is a schematic cross-sectional view of a convex-shaped cylinder of the present invention;

[0024] Figure 7 It is a schematic cross-sectional view of an annular extruded plate of the present invention;

[0025] Figure 8 It is a schematic cross-sectional view of the isolation cover of the present invention;

[0026] Fig. 9 This is a schematic diagram of the distribution of the jet holes of the present invention;

[0027] Fig.10 It is a schematic diagram of the lower hopper structure of the present invention.

[0028] In the figure: 1, base; 11, mounting frame; 12, air cooler; 13, control box; 2, mounting base; 21, support plate; 22, isolation cover; 221, annular cavity; 222, jet hole; 23, feed pipe; 24, thick annular plate; 25, discharge port; 3, convex cylinder; 31, lifting groove; 32, extrusion part; 33, extrusion hole; 4, moving sleeve; 401, annular groove; 41, convex sleeve; 42, piston cylinder; 43, moving piston rod; 44, annular extrusion plate; 441, storage cavity; 442, annular worm gear; 443, worm; 444, spiral strip; 445. Positioning hole; 446. Elastic component; 447. Moving rod; 448. Spiral guide groove; 449. Limit block; 45. Mounting groove; 46. Deflection rod; 47. Ejector rod; 48. Guide hole; 5. Rotating shaft; 51. Auxiliary scraper; 52. Extrusion drum; 53. Flexible triangular column; 6. Stirring rod; 61. Adjusting rod; 62. Z-shaped rod; 63. Vertical support rod; 7. L-shaped limit rod; 71. Guide rod; 8. Discharge hopper; 81. Material guide chute; 82. L-shaped material cutting plate; 83. Electric telescopic rod; 84. Leakage hole; 85. Aggregate channel; 86. Discharge valve pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1 , Figure 2 and Fig.10 A granulation device for processing thermoplastic elastomers, comprising a base 1, a mounting base 2, a support plate 21, a control box 13 and other components, a support column (not shown) is welded at a dead angle at the bottom of the base 1, a mounting base 2 with a columnar structure is fixedly connected to the top of the base 1, a disc-shaped support plate 21 is fixedly connected to the top of the mounting base 2, an isolation cover 22 is fixedly connected to the top edge of the support plate 21, and a feed pipe 23 is fixedly connected to the top of the isolation cover 22. The feed pipe 23 is used to introduce the thermoplastic elastomer processed by melting. Elastomer material, the top of the support plate 21 is fixedly connected with a stainless steel convex cylinder 3, there is a gap between the top plate of the isolation cover 22 and the top port of the convex cylinder 3, the feed pipe 23 port is suspended above the top port of the convex cylinder 3, and discharge ports 25 are respectively opened at the top edges of the support plate 21 on the outside of the two ends of the convex cylinder 3, and the discharge ports 25 are symmetrically arranged about the convex cylinder 3, and the bottom of the support plate 21 below the discharge port 25 is fixedly connected with a lower hopper 8, and the lower hopper 8 is suspended on the outside of the base 1.

[0031] The lower hopper 8 includes a material guide chute 81 fixedly connected to the bottom of the support plate 21, the top port of the material guide chute 81 is connected to the discharge port 25, and an L-shaped material cut-off plate 82 is movably provided on the side wall at one end of the top port of the material guide chute 81, and an electric telescopic rod 83 is fixedly connected between the side plate of the L-shaped material cut-off plate 82 and the side wall of the material guide chute 81, and the electric telescopic rod 83 is used to push the L-shaped material cut-off plate 82 to move laterally at the top port of the material guide chute 81 to control the opening and closing of the top port of the material guide chute 81. Leakage holes 84 are evenly arranged on the inclined bottom plate of the material guide chute 81, and a collection channel 85 is fixedly connected to the bottom of the inclined bottom plate of the material guide chute 81 below the leakage holes 84. The collection channel 85 is a funnel-shaped structure, and a connected discharge valve pipe 86 is fixedly connected to the bottom of the material collection channel 85. The leakage holes 84 on the inclined bottom plate of the material guide chute 81 are used to separate and collect the fragments generated during the pelletizing of the thermoplastic elastomer, and the complete thermoplastic elastomer particles roll down from the end of the inclined bottom plate of the material guide chute 81 for collection, so as to avoid the fragments being mixed with the thermoplastic elastomer particles.

[0032] In order to solve the problem that when the existing granulation device uses a rotary cutter to cut the initially solidified thermoplastic elastomer material after melting, the cut thermoplastic elastomer particles are easily adhered to the cutter, thus affecting the cutting of subsequent materials, please refer to Figure 1-Figure 5 and Figure 8-Figure 9 , provide the following preferred technical solutions:

[0033] An inclined lifting groove 31 is provided on the upper outer wall of the convex-shaped cylinder 3, an outwardly protruding extrusion portion 32 is provided at the bottom of the inner cavity of the convex-shaped cylinder 3, and extrusion holes 33 are evenly spaced on the side wall of the extrusion portion 32. A movable sleeve 4 is movably sleeved on the outer wall of the extrusion portion 32, and an annular groove 401 is provided on the outer wall at the top of the movable sleeve 4. A rotating shaft 5 is movably penetrated at the middle of the bottom plate of the convex-shaped cylinder 3, and the lower end of the rotating shaft 5 extends through and extends to the inside of the base 1. A motor is provided inside the base 1, and the output end of the motor is fixedly connected to the lower end of the rotating shaft 5. The top of the rotating shaft 5 is movably connected to a stirring rod 6. The top of the rotating shaft 5 is a hollow structure. A sleeve hole for a movable sleeve stirring rod 6 is provided at the top of the shaft 5, and a convex block is provided on the inner wall of one side of the sleeve hole, and the convex block is movably engaged in the slide groove on the side wall of the stirring rod 6. The ends of both ends of the stirring rod 6 are bent and extended to the outside of the port of the convex cylinder 3, and the bottom of the end of the stirring rod 6 outside the port of the convex cylinder 3 is fixedly connected with an L-shaped limit rod 7, and the end of the bottom cross bar of the L-shaped limit rod 7 is movably engaged in the annular groove 401, and a guide rod 71 is fixedly connected to the vertical rod side wall of the L-shaped limit rod 7 on one side of the convex cylinder 3, and the end of the guide rod 71 is movably engaged in the lifting groove 31, and the outer wall of the rotating shaft 5 at the extrusion part 32 is evenly spaced and fixed. The auxiliary scraper 51 is fixedly connected, and the auxiliary scraper 51 is arranged in contact with the bottom plate of the convex cylinder 3. When the auxiliary scraper 51 rotates with the rotating shaft 5, the bottom plate of the convex cylinder 3 is scraped to prevent the molten thermoplastic elastomer fluid from being deposited and adhering to the bottom plate of the convex cylinder 3. An extrusion drum 52 is movably arranged on the top of the end of the auxiliary scraper 51. The extrusion drum 52 is arranged in contact with the inner wall of the extrusion part 32. The molten thermoplastic elastomer fluid is squeezed out of the extrusion hole 33 by rolling the extrusion drum 52. A round head with a circular structure is arranged at the end of the auxiliary scraper 51. The diameter of the round head is smaller than the diameter of the extrusion drum 52 to avoid hindering the rotation of the extrusion drum 52. A flexible triangular column 53 is fixedly connected to the round head side wall at the end of the auxiliary scraper 51. The flexible triangular column 53 scrapes and cleans the inner wall of the convex cylinder 3 at the extrusion hole 33 when it fits against the inner wall. An isolation cover 22 is fixedly connected to the top edge of the support plate 21. A feed pipe 23 is fixedly connected to the top of the isolation cover 22. The feed pipe 23 port is suspended above the top port of the convex cylinder 3. A mounting frame 11 is fixedly connected to the top of the end of the base 1. A cold air fan 12 is fixedly connected to the top of the mounting frame 11. The air outlet pipe of the cold air fan 12 is fixedly connected and communicated with the side wall of one end of the isolation cover 22. The air outlet pipe of the cold air fan 12 is arranged corresponding to the extrusion hole 33.

[0034] A thick annular plate 24 is fixedly connected to the inner wall of the isolation cover 22, and the thick annular plate 24 is located above the extrusion hole 33. The thick annular plate 24 is arranged around the convex cylinder 3, and the movable sleeve 4 is movably engaged with the middle hole of the thick annular plate 24. An annular cavity 221 is arranged inside the isolation cover 22 at the thick annular plate 24, and one end of the annular cavity 221 is connected to the air outlet of the air cooler 12. An air jet hole 222 is arranged inside the annular cavity 221, and the port of the air jet hole 222 extends obliquely downward to the inner wall of the isolation cover 22 at the bottom of the thick annular plate 24, and the air jet hole 222 is arranged inside the annular cavity 221. The holes 222 are arranged in a spiral distribution. The cold air ejected from the jet holes 222 condenses the thermoplastic elastomer material extruded from the extrusion hole 33, and at the same time, the cold air ejected from the spirally distributed jet holes 222 forms a vortex between the movable sleeve 4 and the support plate 21. The vortex drives the formed thermoplastic elastomer particles to roll to the discharge port 25 for discharge. The top end of the base 1 away from the air cooler 12 is fixedly connected to the control chassis 13, the air cooler 12 is electrically connected to the control chassis 13, and a touch screen controller is arranged on the outer wall of the shell of the control chassis 13.

[0035] The stirring rod 6 includes an adjusting rod 61 with a movable sleeve arranged in a sleeve hole at the top end of the rotating shaft 5, a slide groove matching the protrusion is provided on the outer wall of one side of the adjusting rod 61, and Z-shaped rods 62 are fixedly connected to the outer walls on both sides of the adjusting rod 61, and the cross bar at the end of the Z-shaped rod 62 extends to the outside of the top port of the convex cylinder 3, and the bottom of the end of the Z-shaped rod 62 outside the top port of the convex cylinder 3 is fixedly connected to the L-shaped limit rod 7, and the bottom of the Z-shaped rod 62 near one end of the rotating shaft 5 is evenly fixedly connected with vertical support rods 63, and the vertical support rods 63 and the Z-shaped rod 62 stir the molten thermoplastic elastomer inside the convex cylinder 3 when the rotating shaft 5 rotates.

[0036] Specifically, the molten thermoplastic elastomer material for waste recycling is introduced from the feed pipe 23, and the molten thermoplastic elastomer material falls into the convex cylinder 3. The motor is started to drive the rotating shaft 5 to drive the Z-shaped rod 62 and the auxiliary scraper 51 to rotate. The Z-shaped rod 62 drives the vertical support rod 63 to stir the fallen thermoplastic elastomer material. At the same time, the auxiliary scraper 51 drives the extrusion drum 52 to roll against the inner wall of the extrusion part 32. When the extrusion drum 52 rolls against the inner wall of the extrusion part 32, the rotating centrifugal force is cooperated to extrude the molten thermoplastic elastomer material from the extrusion hole 33 on the side wall of the extrusion part 32. The air cooler 12 provides cold air to blow toward the extrusion hole 33 to quickly cool the extruded thermoplastic elastomer strip. When the Z-shaped rod 62 rotates, it pushes the guide rod 71 to slide along the inclined lifting groove 31 on the side wall of the convex cylinder 3, so as to use the height difference of the inclined lifting groove 31 to push the Z-shaped rod 62 to rotate up and down outside the convex cylinder 3. When 62 rotates back and forth up and down, the L-shaped limit rod 7 is used to drive the movable sleeve 4 to move back and forth up and down on the outer wall of the extrusion part 32 at the extrusion hole 33. After the thermoplastic elastomer strip is extruded from the extrusion hole 33, the end is deflected and tilted downward due to gravity, so that the bottom edge of the middle hole of the movable sleeve 4 is used to extrude the thermoplastic elastomer strip extending from the extrusion hole 33, and the misalignment between the bottom edge of the middle hole of the movable sleeve 4 and the outer wall of the extrusion part 32 is used to cut the thermoplastic elastomer strip extruded from the extrusion hole 33. When the movable sleeve 4 is used to synchronously extrude, cut and granulate the thermoplastic elastomer extruded from the numerous extrusion holes 33 on the side wall of the extrusion part 32, the bottom edge of the middle hole of the movable sleeve 4 is in line contact with the extruded thermoplastic elastomer, thereby avoiding the line-surface contact of the extruded thermoplastic elastomer cut by the rotary cutter of the conventional granulation equipment, and reducing the contact area with the cut thermoplastic elastomer particles to avoid the problem of adhesion to the rotary cutter and affecting the subsequent granulation process.

[0037] like Figure 2 , Figure 3 and Figure 6 As shown, in order to further enhance the anti-sticking effect of cutting the molten thermoplastic elastomer, this embodiment provides the following technical solutions:

[0038] The movable sleeve 4 includes a convex sleeve 41 movably sleeved on the outer wall of the extrusion part 32, and the convex edge of the lower part of the convex sleeve 41 is in contact with the inner wall of the middle hole of the thick annular plate 24. When the convex sleeve 41 slides, the cold air ejected from the jet hole 222 is prevented from flowing upward, so that the extruded thermoplastic elastomer material is quickly cooled in the space below the convex sleeve 41 to promote the rapid solidification and molding of the extruded thermoplastic elastomer material. Piston cylinders 42 are evenly spaced at the bottom edge of the convex sleeve 41, and a movable piston rod 43 is movably sleeved at the bottom of the piston cylinder 42. An annular extrusion plate 44 is fixedly connected to the bottom of the piston rod 43, and a mounting groove 45 is provided at the bottom of the convex sleeve 41 inside the piston cylinder 42. A deflection rod 46 is movably arranged between the inner walls on both sides of the mounting groove 45, and sliding grooves are provided on the inner walls on both sides of the mounting groove 45. Sliding rods are fixedly connected to the outer walls on both sides of the deflection rod 46, and the ends of the sliding rods are movably engaged in the sliding grooves. An ejection rod 47 is movably connected to one end of the deflection rod 46 near the middle hole of the convex sleeve 41, and a guide hole 48 is provided on the annular extrusion plate 44 corresponding to the ejection rod 47, and the lower end of the ejection rod 47 is movably sleeved in the guide hole 48.

[0039] Compressed gas is filled between the top plate of the piston cylinder 42 and the end of the movable piston rod 43. When the end of the movable piston rod 43 is located at the bottom of the piston cylinder 42, the lower end of the deflection rod 46 is set in contact with the top plate of the annular extrusion plate 44. At this time, the top end of the ejection rod 47 is set in contact with the top plate of the mounting groove 45, and the mounting groove 45 is retracted into the guide hole 48.

[0040] Specifically, when the movable sleeve 4 moves back and forth up and down on the outer wall of the extrusion part 32 for dislocation pelletizing, the annular extrusion plate 44 first contacts the formed thermoplastic elastomer particles accumulated on the top of the support plate 21, and the annular extrusion plate 44 pushes the movable piston rod 43 to compress the compressed gas inside the piston cylinder 42, and the annular extrusion plate 44 moves in the opposite direction to approach the convex sleeve 41. After the annular extrusion plate 44 moves toward the convex sleeve 41, the annular extrusion plate 44 squeezes the end of the deflection rod 46, so that the deflection rod 46 slides and deflects based on the slide groove in the installation groove 45. After the deflection rod 46 is deflected, it pushes the ejection rod 47 to eject the guide hole 48 on the annular extrusion plate 44. After the lower end of the ejection rod 47 extends from the guide hole 48 port at the bottom of the annular extrusion plate 44, it presses the bottom edge of the middle hole of the annular extrusion plate 44, thereby causing a small amount of sticky thermoplastic elastomer particles at the bottom of the annular extrusion plate 44 to detach, thereby avoiding the adhesion of the thermoplastic elastomer particles to affect the subsequent pelletizing work of the thermoplastic elastomer, and the use is convenient.

[0041] Furthermore, in order to prevent the molten thermoplastic elastomer from sticking to the movable sleeve 4 after being cut, as Figure 2-Figure 3 and Figure 6-Figure 7 As shown, this embodiment provides the following technical solutions:

[0042] The bottom of the annular extrusion plate 44 outside the guide hole 48 is evenly spaced with a storage cavity 441, and the annular extrusion plate 44 outside the storage cavity 441 is provided with a mounting cavity connected to the storage cavity 441. An annular worm gear 442 is movably embedded between the upper and lower bottom plates of the mounting cavity, and a worm 443 is meshed on one side of the annular worm gear 442. The end of the worm 443 extends through the storage cavity 441. The end of the worm 443 in the storage cavity 441 is fixedly connected with a spiral strip 444. The bottom of the annular extrusion plate 44 corresponds to the annular worm gear 442. A positioning hole 445 is provided at the middle hole of the wheel 442, and an elastic component 446 is fixedly connected to the lower end of the top plate of the positioning hole 445, and a moving rod 447 is fixedly connected to the bottom of the elastic component 446. The lower end of the moving rod 447 passes through the middle hole of the annular worm gear 442 and extends to the bottom of the annular extrusion plate 44, and a spiral guide groove 448 is provided on the outer wall of the moving rod 447. A limit block 449 is fixedly connected to the inner wall on one side of the middle hole of the annular worm gear 442, and the end of the limit block 449 is movably engaged in the spiral guide groove 448.

[0043] The lower end of the spiral strip 444 extends to the outside of the bottom port of the storage chamber 441. When the elastic component 446 maintains a normal relaxation state, the lower end of the moving rod 447 extends to the outside of the bottom of the annular extrusion plate 44, and the limit block 449 is located in the port at the top of the spiral guide groove 448.

[0044] Specifically, when the movable sleeve 4 moves back and forth up and down on the outer wall of the extrusion part 32 to perform dislocation pelletizing, the movable rod 447 at the bottom of the annular extrusion plate 44 first contacts the top of the support plate 21, and as the annular extrusion plate 44 moves downward, the movable rod 447 moves upward relative to the annular extrusion plate 44 to compress the elastic component 446 in the positioning hole 445. When the movable rod 447 moves upward, under the action of the spiral guide groove 448, the limit block 449 on the inner wall of the middle hole of the annular worm gear 442 slides along the spiral guide groove 448. In turn, the annular worm wheel 442 is pushed to rotate in the installation cavity. When the annular worm wheel 442 rotates, the meshing worm 443 is engaged to push the spiral strip 444 to rotate in the storage cavity 441. When the spiral strip 444 rotates, the cut thermoplastic elastomer particles adhered to the bottom of the middle hole of the annular extrusion plate 44 are continuously rolled and moved, so that they are quickly separated from the annular extrusion plate 44, further avoiding the problem that the cut thermoplastic elastomer particles adhere to the annular extrusion plate 44 and affect the subsequent pelletizing of the thermoplastic elastomer material. It is simple and efficient.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A granulation device for processing thermoplastic elastomers, comprising a base (1) and a mounting base (2) fixedly connected to the top of the base (1), wherein a support plate (21) is fixedly connected to the top of the mounting base (2), characterized in that: The top end of the support plate (21) is fixedly connected to a convex cylinder (3), an upper outer wall of the convex cylinder (3) is provided with an inclined lifting groove (31), an outer bottom of the inner cavity of the convex cylinder (3) is provided with an outwardly protruding extrusion portion (32), extrusion holes (33) are evenly spaced on the side wall of the extrusion portion (32), a movable sleeve (4) is movably sleeved on the outer wall of the extrusion portion (32), and an annular groove (401) is provided on the outer wall at the top of the movable sleeve (4). A rotating shaft (5) is movably provided at the middle of the bottom plate of the convex-shaped cylinder (3), and a stirring rod (6) is movably connected to the top of the rotating shaft (5). The ends of both ends of the stirring rod (6) are respectively bent and extended to the outside of the port of the convex-shaped cylinder (3). The bottom of the end of the stirring rod (6) outside the port of the convex-shaped cylinder (3) is fixedly connected to an L-shaped limiting rod (7). The bottom cross bar end of the L-shaped limiting rod (7) is movably engaged in the annular groove (401), and the end of the bottom cross bar of the L-shaped limiting rod (7) on one side of the convex-shaped cylinder (3) is fixedly connected to the bottom of the end of the stirring rod (6) outside the port of the convex-shaped cylinder (3). A guide rod (71) is fixedly connected to the side wall of the vertical rod of the L-shaped limit rod (7), and the end of the guide rod (71) is movably engaged in the lifting groove (31). Auxiliary scrapers (51) are evenly spaced and fixedly connected to the outer wall of the rotating shaft (5) at the extrusion part (32). An extrusion rotating drum (52) is movably arranged at the top of the end of the auxiliary scraper (51). The extrusion rotating drum (52) is arranged to fit the inner wall of the extrusion part (32). The top edge of the support plate (21) is fixedly connected to the spacer. The isolation cover (22) is fixedly connected to the top of the isolation cover (22) with a feed pipe (23), the port of the feed pipe (23) is suspended above the top port of the convex-shaped cylinder (3), the top of the end of the base (1) is fixedly connected to a mounting frame (11), the top of the mounting frame (11) is fixedly connected to a cold air fan (12), the air outlet pipe of the cold air fan (12) is fixedly connected to and communicated with the side wall of one end of the isolation cover (22), and the air outlet pipe of the cold air fan (12) is arranged corresponding to the extrusion hole (33).

2. A granulation device for thermoplastic elastomer processing as claimed in claim 1, characterized in that: Discharge ports (25) are respectively provided at the top edges of the support plates (21) on the outside of both ends of the convex-shaped cylinder (3), and the discharge ports (25) are symmetrically arranged with respect to the convex-shaped cylinder (3). A lower hopper (8) is fixedly connected to the bottom of the support plate (21) below the port of the discharge port (25), and the lower hopper (8) is suspended on the outside of the base (1), and a control cabinet (13) is fixedly connected to the top end of the base (1) away from the cooling fan (12).

3. A granulation device for thermoplastic elastomer processing as claimed in claim 2, characterized in that: The material discharge hopper (8) comprises a material guide chute (81) fixedly connected to the bottom of the support plate (21); the top port of the material guide chute (81) is connected to the material discharge port (25); an L-shaped material cut-off plate (82) is movably provided on the side wall at one end of the top port of the material guide chute (81); an electric telescopic rod (83) is fixedly connected between the side plate of the L-shaped material cut-off plate (82) and the side wall of the material guide chute (81); leakage holes (84) are evenly provided on the inclined bottom plate of the material guide chute (81); a material collection channel (85) is fixedly connected to the bottom of the inclined bottom plate of the material guide chute (81) below the leakage holes (84); and a communicating material discharge valve pipe (86) is fixedly connected to the bottom of the material collection channel (85).

4. A granulation device for thermoplastic elastomer processing as claimed in claim 1, characterized in that: The top of the rotating shaft (5) is hollow in structure. A sleeve hole for movably clamping the stirring rod (6) is opened on the top of the rotating shaft (5). A convex block is arranged on the inner wall of one side of the sleeve hole. The convex block is movably clamped in a slide groove on the side wall of the stirring rod (6). The auxiliary scraper (51) is arranged in contact with the bottom plate of the convex cylinder (3). A round head with a circular structure is arranged at the end of the auxiliary scraper (51). A flexible triangular column (53) is fixedly connected to the side wall of the round head at the end of the auxiliary scraper (51).

5. A granulation device for thermoplastic elastomer processing as claimed in claim 4, characterized in that: The stirring rod (6) comprises an adjusting rod (61) with a movable sleeve arranged in a sleeve hole at the top end of the rotating shaft (5); a sliding groove matching the protrusion is provided on an outer wall on one side of the adjusting rod (61); Z-shaped rods (62) are fixedly connected to the outer walls on both sides of the adjusting rod (61); a cross bar at the end of the Z-shaped rod (62) extends to the outside of the top port of the convex cylinder (3); the bottom of the end of the Z-shaped rod (62) outside the top port of the convex cylinder (3) is fixedly connected to the L-shaped limit rod (7); and the bottom of the Z-shaped rod (62) close to one end of the rotating shaft (5) is evenly spaced and fixedly connected to vertical support rods (63).

6. A granulation device for thermoplastic elastomer processing as claimed in claim 1, characterized in that: A thick annular plate (24) is fixedly connected to the inner wall of the isolation cover (22), the thick annular plate (24) is located above the extrusion hole (33), the thick annular plate (24) is arranged around the convex cylinder (3), the movable sleeve (4) is movably engaged with the middle hole of the thick annular plate (24), an annular cavity (221) is arranged inside the isolation cover (22) at the thick annular plate (24), one end of the annular cavity (221) is connected to the air outlet tube of the cold air machine (12), an injection hole (222) is arranged inside the annular cavity (221), the port of the injection hole (222) extends obliquely downward to the inner wall of the isolation cover (22) at the bottom of the thick annular plate (24), and the injection holes (222) are arranged in a spiral distribution.

7. A granulation device for processing thermoplastic elastomer according to claim 6, characterized in that: The movable sleeve (4) comprises a convex sleeve (41) movably sleeved on the outer wall of the extrusion part (32), the convex edge of the lower part of the convex sleeve (41) is in contact with the inner wall of the middle hole of the thick annular plate (24), piston cylinders (42) are evenly spaced at the bottom edge of the convex sleeve (41), a movable piston rod (43) is movably sleeved at the bottom of the piston cylinder (42), and the bottom of the movable piston rod (43) is fixedly connected to an annular extrusion plate (44) A mounting groove (45) is provided at the bottom of the convex sleeve (41) inside the piston cylinder (42), a deflection rod (46) is movably provided between the inner walls on both sides of the mounting groove (45), an ejection rod (47) is movably connected to one end of the deflection rod (46) close to the middle hole of the convex sleeve (41), a guide hole (48) is provided on the annular extrusion plate (44) corresponding to the ejection rod (47), and the lower end of the ejection rod (47) is movably inserted into the guide hole (48).

8. A granulation device for thermoplastic elastomer processing as claimed in claim 7, characterized in that: Compressed gas is filled between the top plate of the piston cylinder (42) and the end of the movable piston rod (43). When the end of the movable piston rod (43) is located at the bottom of the piston cylinder (42), the lower end of the deflection rod (46) is arranged in contact with the top plate of the annular extrusion plate (44). At this time, the top end of the ejection rod (47) is arranged in contact with the top plate of the mounting groove (45), and the mounting groove (45) is contracted into the guide hole (48).

9. A granulation device for thermoplastic elastomer processing as claimed in claim 7, characterized in that: The bottom of the annular extrusion plate (44) outside the guide hole (48) is evenly spaced with receiving cavities (441), the annular extrusion plate (44) outside the receiving cavity (441) is provided with a mounting cavity connected to the receiving cavity (441), an annular worm gear (442) is movably embedded between the upper and lower bottom plates of the mounting cavity, a worm (443) is meshedly provided on one side of the annular worm gear (442), the end of the worm (443) extends through the receiving cavity (441), the end of the worm (443) in the receiving cavity (441) is fixedly connected with a spiral strip (444), and the bottom of the annular extrusion plate (44) corresponds to the annular A positioning hole (445) is provided at the middle hole of the worm wheel (442); an elastic component (446) is fixedly connected to the lower end of the top plate of the positioning hole (445); a moving rod (447) is fixedly connected to the bottom of the elastic component (446); the lower end of the moving rod (447) passes through the middle hole of the annular worm wheel (442) and extends to the bottom of the annular extrusion plate (44); a spiral guide groove (448) is provided on the outer wall of the moving rod (447); a limiting block (449) is fixedly connected to the inner wall of one side of the middle hole of the annular worm wheel (442); and the end of the limiting block (449) is movably engaged in the spiral guide groove (448).

10. A granulation device for thermoplastic elastomer processing according to claim 9, characterized in that: The lower end of the spiral strip (444) extends to the outside of the bottom port of the storage chamber (441), and when the elastic component (446) maintains a normal relaxation state, the lower end of the moving rod (447) extends to the outside of the bottom of the annular extrusion plate (44), and the limit block (449) is located in the port at the top of the spiral guide groove (448).

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