Anti-sticking rotary cutting mechanism of PVC plastic particle cutting system

Abstract

The utility model relates to the technical field of plastic granulation, and particularly discloses an anti-sticking rotary cutting mechanism of a PVC (polyvinyl chloride) plastic particle cutting system. The granulating assembly comprises a rotating shaft, the side, close to the extrusion pipe, of the rotating shaft is fixedly connected with a first connecting block, the side, away from the extrusion pipe, of the rotating shaft is fixedly connected with a second connecting block, the second connecting block is provided with a plurality of impact assemblies in an annular array mode, and the impact assemblies are used for impacting the first connecting block; and the air-assisted assembly is arranged on the upper portion of the shell, and the air-assisted assembly is used for blowing away particles attached to the cutting assembly in time. Through the arrangement of the multiple impact assemblies, the impact assemblies can be used for impacting the first connecting blocks, then vibration can be generated, the vibration is transmitted to the multiple cutting assemblies through the first connecting blocks, and therefore the multiple cutting assemblies can be driven to vibrate, and plastic particles attached to the cutting assemblies can be vibrated down; therefore, the number of plastic particles adhered to the cutting assembly can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic granulation, in particular to a kind of anti-sticking knife rotary cutting mechanism of PVC plastic granule cutting system. BACKGROUND

[0002] As an important general-purpose plastic, polyvinyl chloride (PVC) has been widely used in many fields such as construction, packaging, electronics and appliances, automobile manufacturing, etc. due to its excellent chemical stability, good mechanical properties and relatively low cost. With the rapid increase in the use of plastic products, the amount of PVC plastic waste is also growing. In order to realize the recycling of resources, reduce environmental pollution and reduce production costs, recycling and reuse of PVC plastic particles have become an important development direction of the current plastic industry.

[0003] In the recycling process of PVC plastic particles, the extruder is the core equipment. It relies on the rotating screw to push the recycled PVC plastic in a spiral manner. During the pushing process, the screw and the barrel are in mutual extrusion and generate friction heat, causing the PVC plastic to gradually compact and heat up, and finally changing into a molten state. After the plastic is completely melted, the molten plastic is extruded from the die of the extruder head under the continuous pressure of the screw. The originally loose plastic material becomes a continuous strip. The strip of PVC plastic just extruded from the die is at a high temperature and is in a high-temperature molten or semi-molten state. It is soft and has viscoelasticity. In order to make it into a granular product for subsequent processing, it needs to be quickly cooled to solidify and set. The cooled strip of plastic enters the cutting machine, and the high-speed rotating cutter cuts it into particles of a certain size. However, due to the strong interaction between the molecular chains of PVC material in the molten state, even after cooling, the surface still has residual viscoelasticity. When the cutter cuts, the plastic particles are easily adhered to it. With the continuous high-speed rotation and repeated cutting of the cutter, the adhered particles accumulate, changing the cutting angle and force of the cutter, resulting in uneven cutting and affecting the cutting quality of the device. Therefore, we propose a kind of anti-sticking knife rotary cutting mechanism of PVC plastic granule cutting system. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of anti-sticking knife rotary cutting mechanism of PVC plastic granule cutting system to solve the problem of cutter cutting, plastic particles are easily adhered to it, then affect the cutting quality of device in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of anti-sticking knife rotary cutting mechanism of PVC plastic granule cutting system, comprising: support frame;

[0006] Further comprising: shell, support frame upper end and the outer surface lower part of shell are fixedly connected, and extrusion pipe is fixedly connected on one side of shell;

[0007] The cutting assembly is arranged in the inner cavity of the shell, and comprises a rotating shaft, a connecting block one is fixedly connected to one side of the rotating shaft close to the extrusion pipe, a plurality of cutting assemblies are arranged in an annular array on the connecting block one, the cutting assemblies are used for cutting the plastic strip, a connecting block two is fixedly connected to one side of the rotating shaft away from the extrusion pipe, a plurality of impact assemblies are arranged in an annular array on the connecting block two, and the impact assemblies are used for impacting the connecting block one.

[0008] The wind auxiliary assembly is arranged on the upper portion of the shell, and is used for timely blowing away the particles adhered to the cutting assemblies.

[0009] The inner cavity of the shell is fixedly connected with a connecting plate on one side close to the motor, the connecting plate is rotationally connected with the rotating shaft, an adjusting groove is formed in the upper portion of the shell on one side close to the extrusion pipe, and the upper portion of the shell is fixedly connected with a sealing plate through bolts.

[0010] The outer surface of the shell is rotationally connected with a connecting shaft on one side away from the extrusion pipe, the outer surface of the shell is provided with a motor on one side away from the extrusion pipe, the output shaft of the motor is fixedly connected with the connecting shaft, and the connecting shaft is fixedly connected with the rotating shaft on one side away from the motor.

[0011] The wind auxiliary assembly comprises a gas pump fixedly connected with the upper end of the shell, a connecting pipe one is fixedly connected to the output end of the gas pump, the connecting pipe one extends to the inner cavity of the shell through the outer surface of the shell and is fixedly connected with the inner wall of the shell, a universal joint pipe is fixedly connected to the output end of the connecting pipe one, and a gas outlet block is fixedly connected to the output end of the universal joint pipe.

[0012] The impact assembly comprises a connecting shell fixedly connected with the connecting block two, an electromagnet is fixedly connected to one side of the inner cavity of the connecting shell close to the connecting block two, a striking rod is slidingly connected to the inner cavity of the connecting shell, a magnet block is fixedly connected to one side of the striking rod close to the electromagnet, a spring is arranged in the inner cavity of the connecting shell, one side of the spring is fixedly connected with the inner wall of the connecting shell, and the other side of the spring is fixedly connected with one side of the magnet block away from the electromagnet.

[0013] The cutting assembly comprises a support rod fixedly connected with the connecting block one, an installation sleeve is slidingly connected to one side of the support rod away from the connecting block one, and a cutting knife is fixedly connected to one side of the installation sleeve close to the extrusion pipe.

[0014] The rotating shaft is fixedly connected with a plurality of reinforcing ribs in an annular array on one side close to the extrusion pipe, the reinforcing ribs are fixedly connected with the connecting block one on one side away from the extrusion pipe, and the surface of the cutting knife is coated with a Teflon coating.

[0015] The utility model at least has the following beneficial effects:

[0016] By setting several impact components, the impact components can impact the connecting block one, then vibration is generated, the vibration is transmitted to the several cutting components through the connecting block one, so that the several cutting components can be vibrated, the plastic particles adhered to the cutting components can be vibrated down, thereby reducing the number of plastic particles adhered to the cutting components, and the wind auxiliary component is arranged, the particles adhered to the cutting components are blown away in time by the wind auxiliary component, and the cutting effect is prevented from being affected by the particle accumulation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic diagram of the utility model Figure One ;

[0018] Figure 2 It is a whole structure schematic diagram of the utility model Figure Two ;

[0019] Figure 3 It is a local structure schematic diagram of the utility model;

[0020] Figure 4 It is a cutting particle component schematic diagram of the utility model;

[0021] Figure 5 It is an impact component schematic diagram of the utility model;

[0022] Figure 6 It is a cutting component schematic diagram of the utility model.

[0023] In the drawing: 1, support frame;2, shell;21, connecting plate;22, control groove;23, sealing plate;3, motor;31, connecting shaft;4, wind auxiliary component;41, air pump;42, connecting pipe one;43, universal joint pipe;44, air outlet block;5, extrusion pipe;6, cutting particle component;61, rotating shaft;62, reinforcing rib;63, connecting block one;64, impact component;641, connecting shell;642, electromagnet;643, magnet block;644, spring;645, impact rod;65, connecting block two;66, cutting component;661, support rod;662, mounting sleeve;663, cutting knife. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment one

[0026] Please refer toFigures 1 to 6 The utility model provides a technical scheme: a kind of anti-sticking knife rotary cutting mechanism of PVC plastic particle cutting system, comprising: support frame 1;

[0027] Further comprising: shell 2, support frame 1 upper end is fixedly connected with the lower part of the outer surface of shell 2, and one side of shell 2 is fixedly connected with extrusion pipe 5;

[0028] Cutting assembly 6, cutting assembly 6 is arranged in the inner cavity of shell 2, and cutting assembly 6 includes rotating shaft 61, and one side of rotating shaft 61 close to extrusion pipe 5 is fixedly connected with connecting block one 63, and connecting block one 63 is arranged with a plurality of cutting components 66 in annular array, and cutting component 66 is used to cut plastic strip, and one side of rotating shaft 61 away from extrusion pipe 5 is fixedly connected with connecting block two 65, and connecting block two 65 is arranged with a plurality of impact components 64 in annular array, and impact component 64 is used to impact connecting block one 63;

[0029] Wind auxiliary assembly 4, wind auxiliary assembly 4 is arranged on the upper portion of shell 2, and wind auxiliary assembly 4 is used to blow away the particle adhered to cutting component 66 in time.

[0030] By being provided with support frame 1, the entire device can be supported and connected by support frame 1, the plastic particles cut off can be prevented from falling to other places by shell 2, the plastic strips can be transported into the inner cavity of shell 2 by extrusion pipe 5 being connected with extruder, then the plastic strips are cut by a plurality of cutting components 66, a plurality of impact components 64 are arranged, connecting block one 63 is impacted by impact component 64, then vibration is generated, the vibration is transmitted to a plurality of cutting components 66 by connecting block one 63, so that a plurality of cutting components 66 can be vibrated, the plastic particles adhered to cutting component 66 can be vibrated down, so that the number of plastic particles adhered to cutting component 66 can be reduced, wind auxiliary assembly 4 is arranged, and the particles adhered to cutting component 66 are blown away in time by wind auxiliary assembly 4, so that the particles are prevented from being accumulated to affect cutting effect.

[0031] Connecting shaft 31 is rotatably connected to one side of shell 2 away from extrusion pipe 5, motor 3 is arranged on one side of shell 2 away from extrusion pipe 5, the output shaft of motor 3 is fixedly connected with connecting shaft 31, and one side of connecting shaft 31 away from motor 3 is fixedly connected with rotating shaft 61.

[0032] When the plastic strip needs to be cut, extrusion pipe 5 is connected with extruder, so that the plastic after being cut into strips can be transported into the inner cavity of shell 2, then connecting shaft 31 is rotated by motor 3, then rotating shaft 61 is rotated by connecting shaft 31, then the entire cutting assembly 6 can be rotated by rotating shaft 61, and the plastic strips transported into the inner cavity of shell 2 can be cut by a plurality of cutting components 66 when cutting assembly 6 rotates, so that the plastic strips are cut into particles.

[0033] The air auxiliary assembly 4 comprises an air pump 41 fixedly connected to the upper end of the shell 2, an connecting pipe one 42 fixedly connected to the output end of the air pump 41, the connecting pipe one 42 extending through the outer surface of the shell 2 to the inner cavity of the shell 2 and fixedly connected to the inner wall of the shell 2, a universal joint pipe 43 fixedly connected to the output end of the connecting pipe one 42, and an air outlet block 44 fixedly connected to the output end of the universal joint pipe 43. The impact assembly 64 comprises a connecting shell 641 fixedly connected to a connecting block two 65, an electromagnet 642 fixedly connected to the inner cavity of the connecting shell 641 near one side of the connecting block two 65, a striking rod 645 slidingly connected to the inner cavity of the connecting shell 641, a magnet block 643 fixedly connected to one side of the striking rod 645 near the electromagnet 642, a spring 644 arranged in the inner cavity of the connecting shell 641, one side of the spring 644 fixedly connected to the inner wall of the connecting shell 641, and the other side of the spring 644 fixedly connected to one side of the magnet block 643 away from the electromagnet 642. A plurality of reinforcing ribs 62 are fixedly connected to the side of the rotating shaft 61 near the extrusion pipe 5 in an annular array, and the plurality of reinforcing ribs 62 are fixedly connected to the connecting block one 63 together away from the extrusion pipe 5. The cutting knife 663 is coated with a Teflon coating on the surface.

[0034] After the plastic strip is cut, in order to reduce the number of particles adhering to the cutting knife 663 and reduce the influence of the particles adhering to the cutting knife 663 on the cutting quality of the device on the plastic strip in the later period, the air pump 41 can be controlled to run by the controller, air is delivered into the inner cavity of the connecting pipe one 42 by the air pump 41, then the air can be delivered to the cutting knife 663 by the cooperation of the connecting pipe one 42, the universal joint pipe 43 and the air outlet block 44, and then the plastic particles adhering to the cutting knife 663 can be blown. At the same time, the electromagnet 642 can be controlled to run by the controller, a magnetic force repelling the magnet block 643 can be generated by the electromagnet 642, then the magnetic force can be used to push the magnet block 643 to move away from the electromagnet 642, then the magnet block 643 will drive the striking rod 645 to impact in the direction of the connecting block one 63, then vibration will be generated, then the vibration will be transmitted to the cutting knife 663 by the supporting rod 661, then the surface of the cutting knife 663 will vibrate, thereby the inertia force can be used to break the bonding interface between the plastic particles and the cutting edge, so that the plastic particles and the cutting edge are separated, then the plastic particles adhering to the cutting knife 663 can be blown by the air, which can further accelerate the separation of the plastic particles and the cutting edge, then the number of plastic particles adhering to the cutting knife 663 can be reduced. In order to prevent the striking rod 645 from impacting the connecting block one 63 and moving the connecting block one 63, a plurality of reinforcing ribs 62 are fixedly connected to the side of the rotating shaft 61 near the extrusion pipe 5, then the connecting block one 63 can be limited and fixed by the plurality of reinforcing ribs 62, which can further improve the stability of the connecting block one 63. The Teflon coating is coated on the surface of the cutting knife 663, thereby the Teflon coating can effectively reduce the residue of the plastic melt on the cutting edge and reduce the sticking rate.

[0035] The inner cavity of the shell 2 is fixedly connected with a connecting plate 21 close to the motor 3, the connecting plate 21 is rotationally connected with the rotating shaft 61, a regulating groove 22 is formed on the upper part of the side of the shell 2 close to the extrusion pipe 5, and the upper part of the shell 2 is fixedly connected with a sealing plate 23 through bolts.

[0036] When the plastic particles attached to the cutting knife 663 are cleaned by the wind auxiliary assembly 4, the staff can remove the sealing plate 23 by the bolts on the sealing plate 23, release the position limitation of the sealing plate 23, and then separate the sealing plate 23 from the shell 2, then the staff can adjust the position and angle of the universal joint pipe 43 in the inner cavity of the shell 2 through the regulating groove 22 as needed, and then drive the air outlet block 44 to adjust the position and angle, so as to improve the flexibility of the device during use.

[0037] Embodiment two

[0038] The cutting assembly 66 comprises a support rod 661 fixedly connected with the connecting block 163, a mounting sleeve 662 slidingly connected with the side of the support rod 661 away from the connecting block 163, and a cutting knife 663 fixedly connected with the side of the mounting sleeve 662 close to the extrusion pipe 5.

[0039] When the cutting knife 663 needs to be replaced, the position limitation of the mounting sleeve 662 is released by rotating the bolt on the support rod 661, then the mounting sleeve 662 is separated from the support rod 661 by applying a force to the mounting sleeve 662, then the cutting knife 663 is replaced, then the new cutting knife 663 and the mounting sleeve 662 are replaced on the support rod 661, and then the position of the mounting sleeve 662 on the support rod 661 is fixed by the bolt.

[0040] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article, or device.

[0041] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A PVC plastic pellet cutting system anti-sticking knife rotary cutting mechanism, comprising: Support frame (1); It is characterized in that: further comprising: the shell (2), the support frame (1) upper end and the shell (2) outer surface lower part fixedly connected, one side of the shell (2) is fixedly connected with extrusion pipe (5); The pelletizing assembly (6) is arranged in the inner cavity of the shell (2), and the pelletizing assembly (6) comprises a rotating shaft (61), one side of the rotating shaft (61) is fixedly connected with a connecting block one (63), the connecting block one (63) is arranged with a plurality of cutting assemblies (66) in annular array, the cutting assembly (66) is used for cutting plastic strip, one side of the rotating shaft (61) away from the extrusion pipe (5) is fixedly connected with a connecting block two (65), the connecting block two (65) is arranged with a plurality of impact assemblies (64) in annular array, and the impact assembly (64) is used for impacting the connecting block one (63). The wind auxiliary assembly (4) is arranged on the upper portion of the shell (2), and the wind auxiliary assembly (4) is used for timely blowing off the particles adhered to the cutting assembly (66).

2. The anti-sticking knife rotary cutting mechanism of the PVC plastic pellet cutting system according to claim 1, characterized in that: One side of the inner cavity of the shell (2) close to the motor (3) is fixedly connected with a connecting plate (21), the connecting plate (21) is rotatably connected with the rotating shaft (61), and the upper portion of one side of the shell (2) close to the extrusion pipe (5) is provided with a regulating groove (22), and the upper portion of the shell (2) is fixedly connected with a sealing plate (23) through bolts.

3. The anti-sticking knife rotary cutting mechanism of the PVC plastic pellet cutting system according to claim 2, characterized in that: The outer surface of the shell (2) is rotatably connected with a connecting shaft (31) away from the extrusion pipe (5), the motor (3) is arranged on the side of the shell (2) away from the extrusion pipe (5), the output shaft of the motor (3) is fixedly connected with the connecting shaft (31), and the connecting shaft (31) is fixedly connected with the rotating shaft (61) away from the motor (3).

4. The anti-sticking knife rotary cutting mechanism of the PVC plastic pellet cutting system according to claim 1, characterized in that: The wind auxiliary assembly (4) comprises a gas pump (41) fixedly connected with the upper end of the shell (2), the output end of the gas pump (41) is fixedly connected with a connecting pipe one (42), the connecting pipe one (42) extends through the outer surface of the shell (2) to the inner cavity of the shell (2), and the connecting pipe one (42) is fixedly connected with the inner wall of the shell (2), the output end of the connecting pipe one (42) is fixedly connected with a universal joint pipe (43), and the output end of the universal joint pipe (43) is fixedly connected with a gas outlet block (44).

5. The anti-sticking knife rotary cutting mechanism of the PVC plastic pellet cutting system according to claim 1, characterized in that: The impact assembly (64) comprises a connecting shell (641) fixedly connected with the connecting block two (65), the inner cavity of the connecting shell (641) is fixedly connected with an electromagnet (642) on one side close to the connecting block two (65), the inner cavity of the connecting shell (641) is slidably connected with an impact rod (645), one side of the impact rod (645) close to the electromagnet (642) is fixedly connected with a magnet block (643), the inner cavity of the connecting shell (641) is provided with a spring (644), one side of the spring (644) is fixedly connected with the inner wall of the connecting shell (641), and the other side of the spring (644) is fixedly connected with the magnet block (643) away from the electromagnet (642).

6. The anti-sticking knife rotary cutting mechanism of the PVC plastic pellet cutting system according to claim 1, characterized in that: The cutting assembly (66) includes a support rod (661) fixedly connected with the connecting block one (63), a mounting sleeve (662) is slidably connected to the side of the support rod (661) away from the connecting block one (63), and the cutting knife (663) is fixedly connected to the side of the mounting sleeve (662) close to the extrusion pipe (5).

7. The anti-sticking knife rotary cutting mechanism of the PVC plastic pellet cutting system according to claim 6, characterized in that: The rotating shaft (61) is fixedly connected with a plurality of reinforcing ribs (62) in an annular array on the side close to the extrusion pipe (5), the plurality of reinforcing ribs (62) are fixedly connected with the connecting block one (63) on the side away from the extrusion pipe (5) together, and the surface of the cutting knife (663) is coated with a Teflon coating.

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