Granulator for recycling and regenerating TPE (Thermoplastic Elastomer) nylon rubber-coated particles from old plastics and granulation method thereof

Abstract

The invention relates to the technical field of waste plastic recycling, in particular to a pelletizer for recycling and regenerating TPE nylon rubber-coated particles through waste plastics and a pelletizing method of the pelletizer. A plurality of groups of parallel double-end cutters are arranged on the transverse moving frame, and the plurality of groups of double-end cutters are connected through a quadrilateral structure; the driving frame is connected with the transverse moving frame through a telescopic structure, and an eccentric wheel is rotationally mounted at one end of the telescopic structure; the elastic abutting assembly is arranged on the driving frame and matched with the eccentric wheel in an abutting mode, and one end of the double-end cutter can be attached to the connecting frame. The triggering assembly is arranged on the driving frame and connected with the eccentric wheel, and when the driving frame moves to the stroke end, the triggering assembly can drive the double-end cutter to deflect so that the other end of the double-end cutter can be attached to the connecting frame; and the stepping assembly is connected with the transverse moving frame and the telescopic structure, the stepping assembly can drive the transverse moving frame to move relative to the driving frame when the driving frame executes one-time lifting action, and the granulation quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste plastic recycling, in particular to a granulator and a granulation method thereof for recycling TPE nylon encapsulated particles from waste plastic. Background Art

[0002] TPE nylon pelletizing involves mixing TPE and nylon, heating and melting them in an extruder, extruding them into a mold, and then cooling and cutting them into pellets. This material combines the flexibility of TPE with the strength of nylon. The resulting pellets can be used in the manufacture of automotive parts, sports equipment, and other products, and exhibit excellent wear and weather resistance.

[0003] In the granulation process, the mainstream granulation processes include straight cut, rotary and hot cut. Among them, the straight cut granulation is simpler in structure and more reliable in operation. However, the cutter in the straight cut granulation adopts a straight up and down motion mode, which will block the TPE nylon strips during the process of completing the granulation and resetting. In addition, the cutter only performs the granulation action on one side, and the action point is constant. This leads to abnormal wear and dulling at the point where the cutter interacts with the extruded TPE nylon strips. During long-term continuous granulation, burrs will appear on the particles, affecting the granulation effect. Summary of the Invention

[0004] The object of the present invention is to provide a granulator and a granulation method for recycling TPE nylon encapsulated particles by recycling old plastics, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pelletizing machine for regenerating TPE nylon encapsulated pellets by recycling old plastics, comprising a connecting frame;

[0007] A transverse frame, wherein the transverse frame is provided with multiple sets of parallel double-headed cutters, and the multiple sets of double-headed cutters are connected by a quadrilateral structure;

[0008] A driving frame is connected to the transverse frame via a telescopic structure, and an eccentric wheel is rotatably mounted on one end of the telescopic structure;

[0009] An elastic abutment component is provided on the driving frame and abuts against the eccentric wheel, so that one end of the double-headed cutter can be fitted with the connecting frame;

[0010] a trigger assembly, disposed on the drive frame and connected to the eccentric wheel, wherein the trigger assembly is capable of driving the double-ended cutter to deflect so that the other end thereof is in contact with the connecting frame when the drive frame moves to the end of its stroke;

[0011] The stepping assembly is connected to the transverse frame and the telescopic structure. The stepping assembly can drive the transverse frame to move relative to the driving frame when the driving frame performs a lifting action.

[0012] As a further solution of the present invention: the quadrilateral structure includes an extension rod connected to the rotating shaft of the double-headed cutter, the extension rod is parallel to the double-headed cutter, and multiple groups of the extension rods are rotatably mounted with connecting plates at the ends.

[0013] As a further solution of the present invention: the telescopic structure includes a guide wheel provided on the driving frame and a guide groove provided on the transverse frame, and the guide wheel is capable of rolling in the guide groove;

[0014] The telescopic structure includes a connecting shaft coaxially connected to the rotating shaft of one set of double-headed cutters and a rotating sleeve rotatably mounted on the driving frame, the rotating sleeve being rotatably connected to the eccentric wheel and the rotating sleeve being slidably engaged with the connecting shaft;

[0015] A limiting block is provided on the inner wall of the rotating sleeve, and the limiting block is slidably matched with a limiting groove provided on the connecting shaft.

[0016] As a further solution of the present invention: the elastic abutment assembly includes a slide groove provided on the driving frame, a slider is slidably installed in the slide groove, and the slider is connected to the inner wall of the slide groove via a first cylindrical spring;

[0017] The elastic abutment assembly further includes an abutment member connected to the slider, and the abutment member is in abutment engagement with the eccentric wheel.

[0018] As a further solution of the present invention: the trigger assembly includes a trigger shaft connected to the rotating sleeve and coaxial with the rotating shaft of the eccentric wheel, and a first trigger part and a second trigger part mounted on the driving frame;

[0019] The first trigger portion and the second trigger portion are both provided with inclined guide surfaces, and the two groups of inclined guide surfaces are parallel.

[0020] As a further solution of the present invention: an angle between a line connecting the trigger shaft to the center of the rotating sleeve and the inclined guide surface provided on the second trigger part is an obtuse angle.

[0021] As a further solution of the present invention: the stepper assembly includes:

[0022] A driving shaft rotatably mounted on the driving frame, wherein one end of the driving shaft is connected to the rotating sleeve via a toothed belt, and the other end is connected to a driven shaft rotatably mounted on the driving frame via a one-way locking structure;

[0023] A transverse sleeve connected to the transverse frame has a guide groove on its inner wall, and the convex shaft arranged on the driven shaft can roll in the guide groove.

[0024] As a further solution of the present invention: the one-way locking structure includes a follower sleeve slidably mounted on the drive shaft, and the end of the follower sleeve facing away from the driven shaft is connected to the drive shaft via a second cylindrical spring;

[0025] The end of the follower sleeve opposite to the driven shaft is provided with a latching tooth.

[0026] As a further solution of the present invention: the guide groove includes a first arcuate groove and a second arcuate groove provided on the inner wall of the transverse sleeve, and the first arcuate groove and the second arcuate groove are connected at their ends through a spiral groove.

[0027] A method for granulating using the granulator for recycling TPE nylon encapsulated granules from waste plastics comprises the following steps:

[0028] Step 1: The screw extruder extrude the plastic strip, which is then guided into the drive device after cooling;

[0029] Step 2: The drive frame drives multiple sets of double-headed cutters to cut the strip plastic into granules;

[0030] Step 3: After the drive frame moves to the end of the stroke, the trigger component moves to drive the double-headed cutter to deflect;

[0031] Step 4: The drive frame moves in the opposite direction and cuts again;

[0032] Step 5: When the drive frame moves to the reset state, the stepping assembly drives the double-headed cutter to move horizontally;

[0033] Step 6: Repeat steps 2 to 5 above.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] By setting the elastic abutment component, trigger component and multiple sets of double-headed cutters, the trigger component first triggers the action of the elastic abutment component, which can automatically switch the state of the double-headed cutter, and realize continuous cutting with its reciprocating motion, thereby avoiding abnormal wear and blunting of the blade caused by only one side of the blade acting on the strip plastic, and the inclined setting of the double-headed cutter can effectively avoid obstruction of the strip plastic after cutting, thereby ensuring the stability of the strip plastic conveying;

[0036] By setting up a stepping assembly, the lateral position of the double-headed cutter can be switched step by step in a cycle when the double-headed cutter performs the lifting action to granulate, thereby ensuring that the double-headed cutter can interact with the strip plastic at different positions when performing the granulation action, thereby improving the utilization rate of the blade on the double-headed cutter and preventing abnormal wear and blunting of the blade of the double-headed cutter due to the constant cutting position. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of an embodiment of a granulator for recycling TPE nylon encapsulated particles from waste plastics.

[0038] Figure 2 This is a schematic structural diagram from another angle of an embodiment of a granulator for recycling TPE nylon encapsulated particles from waste plastics.

[0039] Figure 3 This is a schematic diagram of the structure of an embodiment of a granulator for recycling TPE nylon encapsulated particles from waste plastics after the connecting frame is removed.

[0040] Figure 4 for Figure 3 A magnified view of the structure at point A in the middle.

[0041] Figure 5 This is a schematic structural diagram of a quadrilateral structure in one embodiment of a granulator for recycling TPE nylon encapsulated particles from waste plastics.

[0042] Figure 6 This is a schematic structural diagram of the coordination relationship between the trigger shaft and the first trigger part and the second trigger part in different states in one embodiment of a granulator for recycling TPE nylon encapsulated particles from waste plastics.

[0043] Figure 7 This is an exploded view of the telescopic structure of an embodiment of a pelletizer for recycling TPE nylon encapsulated pellets from old plastics.

[0044] Figure 8 This is an exploded view of the structure of the stepping assembly in one embodiment of a granulator for regenerating TPE nylon encapsulated pellets by recycling old plastics.

[0045] Figure 9 for Figure 8 A magnified view of the structure at point B.

[0046] Figure 10 A cross section of a traverse sleeve in one embodiment of a pelletizer for recycling TPE nylon encapsulated pellets from old plastics.

[0047] Figure 11 This is an expanded view of the structure of the guide groove in one embodiment of a granulator for recycling TPE nylon encapsulated particles from waste plastics.

[0048] In the figure: 1. connecting frame; 101. discharge hole; 2. linear drive module; 3. driving frame; 301. guide wheel; 302. slide; 4. transverse frame; 401. guide groove; 5. double-head cutter; 501. connecting shaft; 502. limit groove; 6. extension rod; 7. connecting plate; 8. rotating sleeve; 801. limit block; 9. eccentric wheel; 10. trigger shaft; 11. abutment; 12. slider; 13. first cylindrical spring; 14. toothed belt; 15. driving shaft; 16. second cylindrical spring; 17. follower sleeve; 18. driven shaft; 1801. convex shaft; 19. latching tooth; 20. transverse sleeve; 2001. first arc groove; 2002. second arc groove; 2003. spiral groove; 21. first trigger part; 22. second trigger part. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0050] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0051] See also Figures 1 to 11 In an embodiment of the present invention, a granulator for recycling TPE nylon-coated granules from waste plastics includes a connecting frame 1, a transverse frame 4, a driving frame 3, an elastic abutment component, a trigger component and a stepping component, wherein the connecting frame 1 is connected to the driving device, and the connecting frame 1 is fixedly installed with a linear driving module 2, and the linear driving module 2 is connected to the driving frame 3. Furthermore, the connecting frame 1 is provided with a discharge hole 101 for the strip plastic to pass through.

[0052] The transverse frame 4 is provided with multiple groups of parallel double-headed cutters 5, and the multiple groups of double-headed cutters 5 are connected by a quadrilateral structure. The quadrilateral structure includes an extension rod 6 connected to the rotating shaft of the double-headed cutter 5. The extension rod 6 is parallel to the double-headed cutter 5, and the ends of the multiple groups of extension rods 6 are rotatably installed with connecting plates 7.

[0053] The double-headed cutter 5 is initially tilted to avoid obstruction to the movement of the strip plastic after cutting.

[0054] During use, the strip plastic extruded by the screw is guided into the cold water device. During this process, the strip plastic is cooled and hardened, and is manually guided into the corresponding discharge hole 101, and then guided into the driving device, and the strip plastic is driven by the driving device. During this process, the double-headed cutter 5 is in contact with the discharge side of the connecting frame 1, so that when the linear drive module 2 drives the drive frame 3 to move, the double-headed cutter 5 can move vertically in space and parallel to the discharge side of the connecting frame 1 to cut the strip plastic that is transported and protrudes from the discharge hole 101, thereby realizing granulation.

[0055] In this embodiment, multiple groups of double-headed cutters 5 are provided. This arrangement enables each group of double-headed cutters 5 to pass through the discharge hole 101 position in sequence when the drive frame 3 is in motion, so that when the linear drive module 2 moves in one direction, multiple strips of plastic can be continuously cut. Compared with the existing design that uses a single group of cutters, the linear drive module 2 can reciprocate at a lower frequency, thereby reducing the vibration caused by inertia when it drives the drive frame 3 to reciprocate to the end of the stroke.

[0056] Furthermore, multiple groups of double-headed cutters 5 are in a parallel state with each other, and the above-mentioned extension rod 6, connecting plate 7 and transverse frame 4 form a parallelogram structure. Under the action of this parallelogram structure, when the driving frame 3 moves to the end of the stroke and the double-headed cutter 5 is deflected, each group of double-headed cutters 5 can still remain in a parallel state, thereby improving the position stability of the double-headed cutter 5 during cutting.

[0057] See also Figure 7 The driving frame 3 is connected to the transverse frame 4 through a telescopic structure. An eccentric wheel 9 is rotatably mounted on one end of the telescopic structure. The telescopic structure includes a guide wheel 301 provided on the driving frame 3 and a guide groove 401 provided on the transverse frame 4. The guide wheel 301 can roll in the guide groove 401.

[0058] The telescopic structure includes a connecting shaft 501 coaxially connected to the rotating shaft of one set of double-headed cutters 5 and a rotating sleeve 8 rotatably mounted on the driving frame 3, the rotating sleeve 8 is rotatably connected to the eccentric wheel 9, and the rotating sleeve 8 is slidably engaged with the connecting shaft 501;

[0059] A limiting block 801 is provided on the inner wall of the rotating sleeve 8 , and the limiting block 801 is slidably engaged with the limiting groove 502 provided on the connecting shaft 501 .

[0060] In the present application, the double-headed cutter 5 can reciprocate and act on the strip plastic to perform the granulation action. The strip plastic can interact with the double-headed cutter 5 evenly under the guidance of the discharge hole 101, ensuring that the force of the double-headed cutter 5 is balanced. However, during the long granulation process, the force between a single group of strip plastics and the double-headed cutter 5 will be concentrated on a certain point on the double-headed cutter 5, which can easily cause the wear and passivation of this position to be more serious than on both sides of the action point. Therefore, under the action of the stepping assembly, the double-headed cutter 5 can move horizontally relative to the driving frame 3 by a predetermined distance, so that the action point between the single group of strip plastics and the double-headed cutter 5 can be at the double end. Switching occurs on the cutter 5, thereby improving the durability of the double-headed cutter 5, and the above-mentioned double-headed cutter 5 needs to perform a deflection action synchronously. At this time, the connection between the double-headed cutter 5 and the rotating sleeve 8 can be maintained by the provided connecting shaft 501 and the rotating sleeve 8, so that the double-headed cutter 5 can perform an angular deflection action under the cooperation of the elastic abutment component and the trigger component. At the same time, the connecting shaft 501 can slide in the rotating sleeve 8, that is, under the cooperation of the rotating sleeve 8 and the connecting shaft 501, the double-headed cutter 5 can perform an angular rotation action in a step-by-step manner, and can also perform a transverse movement action, ensuring that there is no interference between the two actions, thereby improving the integration of the device.

[0061] See also Figures 3 and 4 The elastic abutment component is provided on the driving frame 3 and abuts against the eccentric wheel 9, so that one end of the double-headed cutter 5 can be fitted with the connecting frame 1;

[0062] The elastic abutment assembly includes a slide groove 302 provided on the driving frame 3, a slider 12 is slidably mounted in the slide groove 302, and the slider 12 is connected to the inner wall of the slide groove 302 via a first cylindrical spring 13;

[0063] The elastic abutment assembly further includes an abutment member 11 connected to the slider 12 , and the abutment member 11 abuts and cooperates with the eccentric wheel 9 , wherein the abutment member 11 is provided with a horizontal abutment surface and two groups of vertical abutment surfaces on a side facing the eccentric wheel 9 .

[0064] In the initial state, the first cylindrical spring 13 is in a stretched state. At this time, the eccentric wheel 9 abuts against the horizontal abutment surface and one group of vertical abutment surfaces, so that the eccentric wheel 9 is in a locked state. In this state, the double-headed cutter 5 can maintain contact with the discharge side of the connecting frame 1, so that the strip plastic can be stably cut when the double-headed cutter 5 moves. Similarly, when the double-headed cutter 5 has completed its deflection, the eccentric wheel 9 can abut against the other end of the horizontal abutment surface and the other self-vertical abutment surface, so that the eccentric wheel 9 is locked again. At the same time, the other end of the double-headed cutter 5 is in contact with the discharge side of the connecting frame 1, and when the double-headed cutter 5 moves in the opposite direction, the granulation action is performed.

[0065] See also Figure 1、 Figure 4 、 Figure 6 The trigger assembly is arranged on the driving frame 3 and connected to the eccentric wheel 9. When the driving frame 3 moves to the end of the stroke, the trigger assembly can drive the double-headed cutter 5 to deflect so that the other end thereof is in contact with the connecting frame 1;

[0066] The trigger assembly includes a trigger shaft 10 connected to the rotating sleeve 8 and coaxial with the rotating shaft of the eccentric wheel 9, and a first trigger part 21 and a second trigger part 22 mounted on the driving frame 3;

[0067] The first trigger portion 21 and the second trigger portion 22 are both provided with inclined guide surfaces, and the two sets of inclined guide surfaces are parallel, wherein the angle between the center line from the trigger shaft 10 to the rotating sleeve 8 and the inclined guide surface provided on the second trigger portion 22 is an obtuse angle.

[0068] For ease of understanding, the double-headed cutter 5 starts to move downward as the initial state for description. In this state, the eccentric wheel 9 abuts against the horizontal abutment surface and one of the vertical abutment surfaces, so that the eccentric wheel 9 is in a locked state. At this time, the lower end of the double-headed cutter 5 is in contact with the discharge side of the connecting frame 1, so that when the double-headed cutter 5 moves downward, it can cut and granulate the strip plastic. When the driving frame 3 moves downward to the end of the stroke, the trigger shaft 10 can abut against the inclined guide surface on the second trigger part 22. The eccentric wheel 9 then moves in a circular motion, which in turn drives the abutment 11 and the slider 12 to move, and further compresses the first cylindrical spring 13. After the eccentric wheel 9 passes the middle position of the abutment 11, the first cylindrical spring 13 releases its elastic potential energy, and the eccentric wheel 9 actively moves in a circular motion, thereby realizing the switching of the double-headed cutter 5, so that the other end thereof is in contact with the discharge side of the connecting frame 1, and the granulation action can continue to be performed when the double-headed cutter 5 moves upward.

[0069] Based on the above arrangement, the state of the double-headed cutter 5 can be automatically switched, and continuous cutting can be achieved with its reciprocating motion, thereby avoiding abnormal wear and blunting of the blade caused by only one side of the blade acting on the strip plastic.

[0070] Furthermore, since the angle between the center line connecting the trigger shaft 10 to the rotating sleeve 8 and the inclined guide surface provided on the second trigger portion 22 is an obtuse angle, and the attached Figure 6 The angle a is an acute angle, which enables the rotating sleeve 8 to drive the double-headed cutter 5 to perform a deflection action when the trigger shaft 10 acts on the inclined guide surface on the second trigger portion 22.

[0071] Furthermore, the projections of the two sets of inclined guide surfaces on the horizontal plane partially overlap with the central axis of the rotating sleeve 8, so that when the trigger shaft 10 moves to the end of the inclined guide surface, it can ensure that the eccentric wheel 9 moves past the middle position of the abutment 11, thereby utilizing the pulling force of the first cylindrical spring 13 to enable the rotating sleeve 8 to actively drive the double-headed cutter 5 to deflect.

[0072] See also Figures 7 to 11 The stepping assembly is connected to the transverse frame 4 and the telescopic structure, and the stepping assembly can drive the transverse frame 4 to move relative to the driving frame 3 when the driving frame 3 performs a lifting action;

[0073] include:

[0074] A drive shaft 15 rotatably mounted on the drive frame 3, one end of the drive shaft 15 being connected to the rotating sleeve 8 via a toothed belt 14, and the other end being connected to a driven shaft 18 rotatably mounted on the drive frame 3 via a one-way locking structure, wherein a damping sleeve is provided at the rotational connection between the driven shaft 18 and the drive frame 3;

[0075] The one-way locking structure includes a follower sleeve 17 slidably mounted on the drive shaft 15 , and one end of the follower sleeve 17 facing away from the driven shaft 18 is connected to the drive shaft 15 via a second cylindrical spring 16 ;

[0076] The follower sleeve 17 and the driven shaft 18 are both provided with latching teeth 19 at one end thereof opposite to the driven shaft 18 .

[0077] During use, when the double-head cutter 5 performs a deflection action, the rotating sleeve 8 will rotate accordingly. At this time, the rotating sleeve 8 drives the drive shaft 15 to rotate through the toothed belt 14, and in the initial state, the second cylindrical spring 16 is in a compressed state, so that under the support of the elastic force of the second cylindrical spring 16, the follower sleeve 17 and the latching teeth 19 on the driven shaft 18 can be in a locked state, and then when the drive shaft 15 rotates, it can drive the driven shaft 18 to rotate.

[0078] When the double-headed cutter 5 deflects in the opposite direction, the rotating sleeve 8 will also drive the follower sleeve 17 to deflect in the opposite direction. At this time, under the action of the damping sleeve, the driven shaft 18 is stationary, and the follower sleeve 17 and the latching teeth 19 on the driven shaft 18 will be relatively continuously misaligned. Based on the above arrangement, it is possible to achieve intermittent unidirectional rotation of the driven shaft 18 during the reciprocating deflection of the double-headed cutter 5.

[0079] The transverse sleeve 20 is connected to the transverse frame 4, and a guide groove is provided on the inner wall of the transverse sleeve 20. The cam 1801 arranged on the driven shaft 18 can roll in the guide groove. The guide groove includes a first arc groove 2001 and a second arc groove 2002 arranged on the inner wall of the transverse sleeve 20. The first arc groove 2001 and the second arc groove 2002 are connected at their ends through a spiral groove 2003.

[0080] In this embodiment, since the driven shaft 18 is in an intermittent unidirectional rotation state, the cam 1801 will also intermittently rotate unidirectionally. During the rotation of the cam 1801, it can cooperate with the guide groove, thereby realizing the relative lateral movement of the double-headed cutter 5 relative to the driving frame 3, so that when the double-headed cutter 5 performs the granulation action, its different positions can interact with the strip plastic, avoiding the two action positions always being consistent, resulting in abnormal wear and blunting of the action point of the double-headed cutter 5.

[0081] It should be noted that the above-mentioned driven shaft 18 rotates only once when the double-headed cutter 5 performs a lifting action, so that when the double-headed cutter 5 performs a lifting action, the double-headed cutter 5 can act on the strip plastic with one of the action points, and when the double-headed cutter 5 performs the lifting action again, the driven shaft 18 will rotate again, so that the convex shaft 1801 can switch to the middle of the spiral groove 2003 through the first arc groove 2001 or the second arc groove 2002. During this process, the double-headed cutter 5 can produce a transverse movement, so that when it acts on the strip plastic, the action point can be different from the first action point. Similarly, when the double-headed cutter 5 performs the lifting action again, the convex shaft 1801 can switch from the middle of the spiral groove 2003 to the first arc groove 2001 or the second arc groove 2002, thereby realizing further switching of the action point.

[0082] Based on the above arrangement, when the double-headed cutter 5 performs the lifting action to granulate, the lateral position of the double-headed cutter 5 can be switched in a step-by-step cycle, thereby ensuring that when performing the granulation action, the double-headed cutter 5 can interact with the strip plastic at different positions, thereby improving the utilization rate of the blade on the double-headed cutter 5 and preventing abnormal wear and blunting of the blade of the double-headed cutter 5 due to the constant cutting position.

[0083] As an embodiment of the present invention, a method for granulating using the granulator for recycling TPE nylon encapsulated granules from waste plastics is also proposed, comprising the following steps:

[0084] Step 1: The screw extruder extrude the plastic strip, which is then guided into the drive device after cooling;

[0085] Step 2: The driving frame 3 drives the multiple sets of double-headed cutters 5 to cut the strip plastic into granules;

[0086] Step 3: After the driving frame 3 moves to the end of the stroke, the trigger component is activated to drive the double-headed cutter 5 to deflect;

[0087] Step 4: Drive frame 3 to move in the reverse direction and cut again;

[0088] Step 5: When the driving frame 3 moves to the reset state, the stepping assembly drives the double-headed cutter 5 to move horizontally;

[0089] Step 6: Repeat steps 2 to 5 above.

[0090] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0091] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pelletizing machine for recycling TPE nylon encapsulated pellets from waste plastics, including a connecting frame; It is characterized by: Also includes: A transverse frame, wherein the transverse frame is provided with multiple sets of parallel double-headed cutters, and the multiple sets of double-headed cutters are connected by a quadrilateral structure; A driving frame is connected to the transverse frame via a telescopic structure, and an eccentric wheel is rotatably mounted on one end of the telescopic structure; An elastic abutment component is provided on the driving frame and abuts against the eccentric wheel, so that one end of the double-headed cutter can be fitted with the connecting frame; a trigger assembly, disposed on the drive frame and connected to the eccentric wheel, wherein the trigger assembly is capable of driving the double-ended cutter to deflect so that the other end thereof is in contact with the connecting frame when the drive frame moves to the end of its stroke; The stepping assembly is connected to the transverse frame and the telescopic structure. The stepping assembly can drive the transverse frame to move relative to the driving frame when the driving frame performs a lifting action.

2. A granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 1, characterized in that: The quadrilateral structure includes an extension rod connected to the rotating shaft of the double-headed cutter, the extension rod is parallel to the double-headed cutter, and the ends of multiple groups of the extension rods are rotatably mounted with connecting plates.

3. The granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 1, characterized in that: The telescopic structure includes a guide wheel provided on the driving frame and a guide groove provided on the transverse frame, wherein the guide wheel can roll in the guide groove; The telescopic structure includes a connecting shaft coaxially connected to the rotating shaft of one set of double-headed cutters and a rotating sleeve rotatably mounted on the driving frame, the rotating sleeve being rotatably connected to the eccentric wheel and the rotating sleeve being slidably engaged with the connecting shaft; A limiting block is provided on the inner wall of the rotating sleeve, and the limiting block is slidably matched with a limiting groove provided on the connecting shaft.

4. The granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 1, characterized in that: The elastic abutment assembly includes a slide groove provided on the driving frame, a slider is slidably installed in the slide groove, and the slider is connected to the inner wall of the slide groove via a first cylindrical spring; The elastic abutment assembly further includes an abutment member connected to the slider, and the abutment member is in abutment engagement with the eccentric wheel.

5. The granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 3, characterized in that: The trigger assembly includes a trigger shaft connected to the rotating sleeve and coaxial with the rotating shaft of the eccentric wheel, and a first trigger part and a second trigger part mounted on the driving frame; The first trigger portion and the second trigger portion are both provided with inclined guide surfaces, and the two groups of inclined guide surfaces are parallel.

6. A granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 5, characterized in that: An angle between a line connecting the trigger shaft and the center of the rotating sleeve and the inclined guide surface provided on the second trigger portion is an obtuse angle.

7. The granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 3, characterized in that: The stepper assembly comprises: A driving shaft rotatably mounted on the driving frame, wherein one end of the driving shaft is connected to the rotating sleeve via a toothed belt, and the other end is connected to a driven shaft rotatably mounted on the driving frame via a one-way locking structure; A transverse sleeve connected to the transverse frame has a guide groove on its inner wall, and the convex shaft arranged on the driven shaft can roll in the guide groove.

8. The granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 7, characterized in that: The one-way locking structure includes a follower sleeve slidably mounted on the drive shaft, and an end of the follower sleeve facing away from the driven shaft is connected to the drive shaft via a second cylindrical spring; The end of the follower sleeve opposite to the driven shaft is provided with a latching tooth.

9. The granulator for recycling TPE nylon encapsulated particles from waste plastics according to claim 7, characterized in that: The guide groove includes a first arcuate groove and a second arcuate groove provided on the inner wall of the transverse sleeve, and the ends of the first arcuate groove and the second arcuate groove are connected through a spiral groove.

10. A method for granulating using the granulator for recycling TPE nylon encapsulated granules from waste plastics as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The screw extruder extrude the plastic strip, which is then guided into the drive device after cooling; Step 2: The drive frame drives multiple sets of double-headed cutters to cut the strip plastic into granules; Step 3: After the drive frame moves to the end of the stroke, the trigger component moves to drive the double-headed cutter to deflect; Step 4: The drive frame moves in the opposite direction and cuts again; Step 5: When the drive frame moves to the reset state, the stepping assembly drives the double-headed cutter to move horizontally; Step 6: Repeat steps 2 to 5 above.

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