Anti-winding cutter disc structure of water-cooled cutting granulator

Abstract

The utility model discloses a kind of anti-winding cutterhead structures of water-cooled granulator, including cutterhead body, the surface of cutterhead body is provided with four fixed shells, the inside of fixed shell is provided with blade, fixed assembly is provided on the fixed shell, the fixed assembly is used to dismounting operation to the blade, anti-winding assembly is provided on the fixed shell, the anti-winding assembly is used for the blade anti-winding, between fixed shell and cutterhead body is connected by spacing connecting component. The drainage plate of the utility model blade both sides can actively dredge molten material flow direction, avoid material to accumulate and wind in the blade root, cutterhead surface, reduce cutting resistance from source, make blade always maintain efficient cutting state, drainage plate is rigidly connected with fixed shell by reinforcing block, avoid drainage plate deformation or displacement when cutterhead high-speed rotation, ensure that anti-winding effect is long-term stable.

Description

Technical Field

[0001] This utility model relates to the field of blade disc technology, specifically to an anti-winding blade disc structure for a water-cooled pelletizer. Background Technology

[0002] Water-cooled pelletizers are commonly used equipment in the processing of polymer materials such as plastics and rubber. Their working principle involves extruding molten polymer material through a die, then using cutters on a cutter disc to cut the extruded material into pellets, which are then cooled and shaped by cooling water. The cutter disc, as the core component of the water-cooled pelletizer, directly affects the quality and efficiency of pelletizing.

[0003] According to application number CN201820414235.9, a pelletizer cutter disc is disclosed, including a cutter holder, a plurality of connecting holes formed on the side of the cutter holder, a movable rod slidably connected in the connecting holes, a blade disposed at one end of the movable rod extending out of the connecting hole, and a fixing member for fixing the position of the movable rod in the connecting hole.

[0004] The cutter disc in the above case does not have an anti-winding effect. Because the molten polymer material has a certain viscosity, some material is easy to wrap around the surface of the cutter disc and the root of the cutter. As the wrapped material continues to accumulate, it will increase the cutting resistance of the cutter, which will not only reduce the pelletizing efficiency, but may also damage the cutter. At the same time, the number of blades cannot be added or reduced as needed, which reduces the flexibility of use. Therefore, we provide an anti-winding cutter disc structure for a water-cooled pelletizer. Utility Model Content

[0005] The purpose of this invention is to provide an anti-winding cutter head structure for a water-cooled pelletizer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-winding cutter head structure for a water-cooled pelletizer, comprising a cutter head body, four fixing shells disposed on the surface of the cutter head body, blades disposed inside the fixing shells, fixing components disposed on the fixing shells for disassembling and assembling the blades, an anti-winding component disposed on the fixing shells for preventing the blades from winding, and a limiting connection component connecting the fixing shells and the cutter head body, the limiting connection component being used for disassembling and assembling the fixing shells.

[0007] Optionally, the fixing assembly includes two baffles, which are installed inside the fixing housing and located on both sides of the blade. The fixing housing is threaded with a fastening bolt, and the end of the fastening bolt near the blade passes through the fixing housing, the baffles and the blade in sequence and extends into the mounting port of the blade.

[0008] Optionally, the anti-winding assembly includes two guide plates, which are mounted on the fixed housing and located on both sides of the blade. The guide plates are fixedly connected to the fixed housing by reinforcing blocks.

[0009] Optionally, the limiting connection assembly includes eight slots that are equidistantly arranged around the front of the cutter head body, and a plug that matches the slot is installed on the side of the fixing shell near the slot.

[0010] Optionally, the insert block extends through the slot and into its interior on the side closest to the slot, contacting the inner wall of the slot. A fixing groove is provided on the side of the fixing shell, and the two sides of the inner wall of the fixing groove are fixedly connected by a sliding rod.

[0011] Optionally, an adjusting block is slidably connected to the surface of the slide rod, and a locking block is installed on the side of the adjusting block near the insert block. A locking groove is opened on the side of the insert block near the locking block and corresponding to the position of the locking block.

[0012] Optionally, a pull plate is installed on the adjusting block, and a fixing bolt that is threadedly connected to the fixed shell is provided on the pull plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The guide plates on both sides of the blade of this utility model can actively guide the flow of molten material, avoid material accumulation and entanglement at the root of the blade and the surface of the cutter head, reduce cutting resistance from the source, and keep the blade in a high-efficiency cutting state. The guide plates are rigidly connected to the fixed shell through the reinforcing block to prevent the guide plates from deforming or shifting when the cutter head rotates at high speed, and ensure long-term stable anti-entanglement effect.

[0014] 2. The cutter head body of this utility model has eight equidistant slots. The fixing shell is quickly positioned by the cooperation of the insert block and the slot. With the locking structure of the slide rod, adjusting block and locking block, the fixing shell can be disassembled and assembled by simply loosening the fixing bolt and pulling the pull plate. The number of fixing shells and blades can be flexibly increased or decreased according to the thickness of the material strip and the production output requirements, such as increasing from four sets to six sets, or eight sets or reducing to two sets, to adapt to the pelletizing scenarios of different polymer materials, thereby improving the flexibility and applicability during use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the side view of this utility model; Figure 3 This is a three-dimensional structural cross-sectional view of the present invention; Figure 4 This is a three-dimensional structural cross-sectional view of the fixing component, anti-winding component, and limiting connection component of this utility model.

[0016] In the diagram: 1. Cutter head body; 100. Fixing shell; 101. Blade; 2. Fixing assembly; 21. Baffle; 22. Fastening bolt; 3. Anti-winding assembly; 31. Drainage plate; 32. Reinforcing block; 4. Limiting connection assembly; 41. Slot; 42. Insert block; 43. Fixing groove; 44. Slide rod; 45. Adjusting block; 46. Locking block; 47. Locking groove; 48. Pull plate; 49. Fixing bolt. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 An anti-winding cutter head structure for a water-cooled pelletizer includes a cutter head body 1. A rotating shaft is fixedly connected to the left side of the cutter head body 1 by welding and is connected to the drive shaft of the water-cooled pelletizer to drive the entire structure to rotate at high speed. Four fixing shells 100 are provided on the surface of the cutter head body 1. The fixing shells 100 indirectly connect the blades 101 to the cutter head body 1. The fixing shells 100 are made of Q235 low carbon steel. The side of the fixing shells 100 closest to the cutter head body 1 is in contact with the cutter head body 1. The blades 101 are provided inside the fixing shells 100. The blades 101 directly contact the molten material strip extruded from the die head of the water-cooled pelletizer and cut the material strip into particles of a preset particle size. It is the core execution component of the cutting function. It is made of high-speed steel and is independently designed and can be replaced individually to avoid the scrapping of the entire cutter head due to local wear.

[0019] A fixing component 2 is provided on the fixing shell 100. The fixing component 2 includes two baffles 21. The two baffles 21 are installed inside the fixing shell 100 and located on both sides of the blade 101. The baffles 21 are installed inside the fixing shell 100 and located on both sides of the blade 101, which limits the blade 101 in the left and right directions to prevent the blade 101 from shifting left and right during cutting vibration. This ensures that the cutting edge of the blade 101 is always in contact with the material strip and avoids particle size deviation due to blade 101 shift. It is made of Q235 steel. The fixing shell 100 is threaded with a fastening bolt 22. Only one bolt needs to be removed to remove the worn blade 101 without disassembling the entire fixing shell 100. The end of the fastening bolt 22 near the blade 101 passes through the fixing shell 100, the baffles 21 and the blade 101 in sequence and extends into the mounting port of the blade 101.

[0020] An anti-winding component 3 is provided on the fixed shell 100. The anti-winding component 3 includes two guide plates 31. The two guide plates 31 are installed on the fixed shell 100 and located on both sides of the blade 101. When the guide plates 31 rotate with the blade 101, they actively guide the flow of molten material, prevent material from winding from the source, reduce the accumulation of material at the root of the blade 101, and reduce cutting resistance. Both the guide plates 31 and the reinforcing blocks 32 are made of 304 stainless steel. The side of the guide plate 31 closest to the blade 101 is in contact with the blade 101. The guide plates 31 are fixedly connected to the fixed shell 100 through the reinforcing blocks 32. The reinforcing blocks 32 enhance the connection strength between the two and prevent the guide plates 31 from deforming or shifting under high-speed rotation or material impact. The two ends of the reinforcing blocks 32 are fixedly connected to the guide plates 31 and the fixed shell 100 respectively by welding.

[0021] The fixed housing 100 and the cutter head body 1 are connected by a limiting connection component 4. The limiting connection component 4 includes eight slots 41, which are equidistantly arranged around the front of the cutter head body 1. The slots 41 cooperate with the inserts 42 of the fixed housing 100 to achieve rapid positioning of the fixed housing 100 on the cutter head body 1. The slots 41 and the inserts 42 are trapezoidal in shape to ensure stability after insertion. The inserts 42 are inserted into the slots 41 to achieve initial connection and positioning of the fixed housing 100 and the cutter head body 1. The side of the fixed housing 100 closest to the slots 41 is equipped with a slot... A matching insert 42, made of Q235 steel, is provided on the side of the insert 42 near the slot 41, penetrating the slot 41 and extending into it to contact the inner wall of the slot 41. A fixing groove 43 is provided on the side of the fixing shell 100. The two sides of the inner wall of the fixing groove 43 are fixedly connected by a slide rod 44. The slide rod 44 guides the adjusting block 45 to slide in a straight line, ensuring that the adjusting block 45 drives the locking block 46 to accurately align with the locking groove 47. The adjusting block 45 is slidably connected to the surface of the slide rod 44. One side of the adjusting block 45 is connected to the locking block 46, and the other side is connected to the pull plate 48. By pulling the pull plate 48, the adjusting block 45 can be adjusted to engage the locking block 46. 8 drives the locking block 46 to move along the slide bar 44, thereby locking or unlocking the locking block 46 and the slot 47. Made of Q235 steel, the adjusting block 45 is fixedly connected to the locking block 46 and the pull plate 48 by welding. The locking block 46 is installed on the side of the adjusting block 45 near the insert block 42. A slot 47 is opened on the side of the insert block 42 near the locking block 46, corresponding to the position of the locking block 46. Driven by the adjusting block 45, the locking block 46 engages with the slot 47 of the insert block 42, achieving the second mechanical locking between the fixed shell 100 and the cutter head body 1. The side of the locking block 46 near the slot 47 passes through... The fixing groove 43, slot 41, insert block 42 and card slot 47 extend into the inside of the card slot 47 and contact the inner wall of the card slot 47. The adjusting block 45 is equipped with a pull plate 48, which provides a manual gripper for the worker to pull the adjusting block 45 to control the movement of the card block 46. The pull plate 48 is provided with a fixing bolt 49 that is threaded to the fixing shell 100. After the card block 46 is inserted into the card slot 47, the bolt is tightened to fix the position of the pull plate 48 and the adjusting block 45, preventing the adjusting block 45 from accidentally sliding and causing the card block 46 to unlock, thus improving the stability of the card block 46 when inserted into the card slot 47.

[0022] When in use, place the blade 101 inside the fixed housing 100, so that the two sides of the blade 101 are in contact with the pre-set baffle 21 inside the fixed housing 100. The baffle 21 can limit the left and right displacement of the blade 101 and ensure that the blade is facing the rotation direction of the blade disc. Take the fastening bolt 22, pass it through the threaded hole at the top of the fixed housing 100 and the through hole of the baffle 21 in sequence, and finally screw it into the mounting through hole of the blade 101. The cutter head body 1 drives the blade 101 to rotate at high speed. The blade 101 cuts the material strip into particles of a preset size. During the cutting process, the guide plates 31 on both sides of the blade 101 rotate synchronously with the cutter head, actively guiding the uncut material strip to the front of the blade, preventing the molten material from being wrapped around the root of the blade 101 due to stickiness. The reinforcing block 32 can prevent the guide plate 31 from deforming due to material impact or centrifugal force, ensuring the anti-winding effect is continuous and stable. When increasing the number of fixed housings 100 and blades 101, after stopping the machine, clean the slots 41 on the cutter head body 1 at the installation position, take a new fixed housing 100, which is pre-installed with blades 101 and anti-winding components 3, insert the insert block 42 from left to right into the empty slot 41, and then drive the adjusting block 45 to move closer to the slot 41 through the pull plate 48, so that the adjusting block 45 drives the locking block 46 to insert into the corresponding slot 47, and then use the fixing bolt 49 to lock the position of the pull plate 48.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-winding cutter disc structure for a water-cooled pelletizer, characterized in that: The device includes a cutter head body (1), on the surface of which are provided four fixing shells (100). Inside each fixing shell (100) is a blade (101). A fixing component (2) is provided on the fixing shell (100), which is used to disassemble and assemble the blade (101). An anti-winding component (3) is provided on the fixing shell (100), which is used to prevent the blade (101) from winding. The fixing shell (100) and the cutter head body (1) are connected by a limiting connection component (4), which is used to disassemble and assemble the fixing shell (100).

2. The anti-winding cutter head structure of the water-cooled pelletizer according to claim 1, characterized in that: The fixing assembly (2) includes two baffles (21), which are installed inside the fixing housing (100) and located on both sides of the blade (101). The fixing housing (100) is threaded with a fastening bolt (22), and one end of the fastening bolt (22) near the blade (101) passes through the fixing housing (100), the baffles (21) and the blade (101) in sequence and extends into the mounting port of the blade (101).

3. The anti-winding cutter head structure of the water-cooled pelletizer according to claim 1, characterized in that: The anti-winding component (3) includes two diversion plates (31), which are mounted on the fixed shell (100) and located on both sides of the blade (101). The diversion plates (31) are fixedly connected to the fixed shell (100) by a reinforcing block (32).

4. The anti-winding cutter head structure of the water-cooled pelletizer according to claim 1, characterized in that: The limiting connection assembly (4) includes a slot (41), the number of which is eight and is equidistantly arranged around the front of the cutter head body (1). The fixing shell (100) has a plug (42) adapted to the slot (41) installed on the side near the slot (41).

5. The anti-winding cutter head structure of the water-cooled pelletizer according to claim 4, characterized in that: The insert (42) extends through the slot (41) on the side near the slot (41) and into the slot (41) to contact the inner wall of the slot (41). The side of the fixed shell (100) is provided with a fixing groove (43), and the two sides of the inner wall of the fixing groove (43) are fixedly connected by a slide rod (44).

6. The anti-winding cutter head structure of the water-cooled pelletizer according to claim 5, characterized in that: An adjusting block (45) is slidably connected to the surface of the slide rod (44). A locking block (46) is installed on the side of the adjusting block (45) near the insert block (42). A locking groove (47) is opened on the side of the insert block (42) near the locking block (46) and corresponding to the position of the locking block (46).

7. The anti-winding cutter head structure of the water-cooled pelletizer according to claim 6, characterized in that: A pull plate (48) is installed on the adjusting block (45), and a fixing bolt (49) is provided on the pull plate (48) to be threadedly connected to the fixed shell (100).

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