A tool for rapid cleaning of a die of a plastic pelletizer

By designing a rapid cleaning tool that integrates die opening clearance and discharge hole inner wall cleaning, the problem of low cleaning efficiency in existing technologies has been solved, achieving a highly efficient and adaptable cleaning effect, suitable for multi-size adaptation of plastic pelletizer die heads.

CN224928451UActive Publication Date: 2026-11-03CHANGCHUN HUASHENG PLASTIC PRODUCTS CO LTD
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Patent Information

Application Number
CN202522573938.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-04
Publication Date
2026-11-03
Estimated Expiration
2035-12-04

AI Technical Summary

Technical Problem

In the existing technology, different tools are required to clean the die head of a plastic pelletizing machine, which is time-consuming and not compatible with different sized die heads, resulting in low cleaning efficiency and affecting production continuity.

Method used

A rapid cleaning tool integrating die opening clearance and discharge hole inner wall cleaning functions was designed. It adopts a detachable scraper head and linkage scraper structure to adapt to different die head sizes. Efficient cleaning is achieved through the irregular design of the scraper head and the mechanical transmission of the cleaning components.

Benefits of technology

It achieves efficient cleaning without frequent tool changes, shortens cleaning time, adapts to different die head specifications, and improves production continuity and cleaning efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to die cleaning tool technical field discloses a kind of die of plastic granulator quick cleaning tool, including mounting sleeve, the mounting sleeve is fixedly installed with copper plate by bolt, the copper plate is detachably connected with the head of scraper, the side of mounting sleeve away from copper plate is fixedly connected with handle, the end of handle away from mounting sleeve is provided with cleaning assembly.In the utility model, the integrated die gap cleaning and the inner wall cleaning function of discharge hole can be completed full scene cleaning without switching multiple sets of tools.The structure design of the top flat of the head of scraper, the inclined lower side can accurately fit the die gap, quickly remove the carbon deposition in gap;Cleaning assembly is linked by sliding ring, articulated rod linkage scraper, adapts the inner wall cleaning demand of discharge hole, avoids the cumbersome steps of frequent replacement of traditional tool, greatly shortens cleaning time, reduces the influence of stop on production continuity, adapts the efficient cleaning demand of large-scale granulation production.
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Description

Technical Field

[0001] This utility model relates to the technical field of die head cleaning tools, and in particular to a quick cleaning tool for the die head of a plastic granulator. Background Technology

[0002] The die head of a plastic granulator is a key component in the molding of molten plastic. The discharge orifice of the die head extrudes molten plastic to form plastic granules, and its unobstructed flow directly determines the quality of granule molding and production efficiency. During the granulation process, molten plastic is prone to carbon deposits and coking on the inner wall of the die head discharge orifice due to high-temperature oxidation and formula residues. If not cleaned in time, this can lead to problems such as discharge orifice blockage, uneven granule size, and surface burrs.

[0003] Currently, in existing technologies, different tools are required to clean the gap between the die head and the inner wall of the die head. Cleaning the gap between the die head and the die head requires carefully removing carbon deposits with a thin-bladed scraper, while cleaning the inner wall of the discharge hole relies on scraping back and forth with a thin drill bit, which is time-consuming. In addition, different sizes of die heads and the die head require different matching tools for cleaning. In view of this, a quick cleaning tool for the die head of a plastic pelletizer is proposed. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a quick cleaning tool for the die head of a plastic granulator, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick cleaning tool for the die head of a plastic granulator, comprising an installation sleeve, wherein a copper plate is fixedly installed on the installation sleeve by bolts, a scraper is detachably connected to the copper plate, a handle is fixedly connected to the side of the installation sleeve away from the copper plate, and a cleaning component is provided at the end of the handle away from the installation sleeve; The top of the scraper head is flat and its lower side is inclined, which is used to clean the gap between the die head and the die opening. The cleaning component is used to clean the inner wall of the die head and the die opening.

[0006] As a further description of the above technical solution: The copper plate has an inlay groove, and the inlay groove has an insertion hole.

[0007] As a further description of the above technical solution: A connecting block is fixedly connected to the outer wall of the scraper head. The connecting block matches the inlay groove and can be fixed in the inlay groove by a pin.

[0008] As a further description of the above technical solution: The cleaning assembly includes a fixing ring, which is fixedly connected to the end of the handle away from the mounting sleeve. A sliding ring is slidably connected to the handle. The fixing ring and the sliding ring are elastically connected by a return spring. A fixing sleeve is fixedly connected to the end of the fixing ring away from the handle. A sliding plate is slidably connected to the inner wall of the fixing sleeve. A scraper is fixedly connected to the outer wall of the sliding plate. A hinge rod is hinged to the outer wall of the sliding plate. A vertical rod is hinged to the end of the hinge rod away from the sliding plate. The vertical rod is fixed to the sliding ring.

[0009] As a further description of the above technical solution: The vertical rod passes through the handle and is slidably connected to the handle, and the scraper passes through the fixing sleeve and is slidably connected to the fixing sleeve.

[0010] As a further description of the above technical solution: The handle has a through groove, and the middle connection of the sliding ring slides in the through groove.

[0011] As a further description of the above technical solution: The handle is fitted with a soft sleeve, which has anti-slip texture.

[0012] This utility model has the following beneficial effects: 1. This utility model integrates the functions of cleaning the die opening gap and cleaning the inner wall of the discharge hole, enabling cleaning in all scenarios without switching between multiple sets of tools. The flat top and inclined bottom design of the scraper head allows for precise fitting of the die opening gap, quickly removing carbon deposits within the gap. The cleaning component, through a sliding ring and hinged rod, links the scraper blade to meet the cleaning needs of the inner wall of the discharge hole, avoiding the cumbersome steps of frequent tool changes in traditional methods, significantly shortening cleaning time, reducing the impact of downtime on production continuity, and meeting the high-efficiency cleaning needs of large-scale granulation production.

[0013] 2. In this utility model, the scraper head adopts a detachable design. Through the cooperation of the connecting block and the inlay groove, and with the help of the pin for fixation, the corresponding scraper head can be quickly replaced according to the gap width of different mold heads. The scraper blade of the cleaning component can be adjusted through the linkage of the sliding ring to adapt to the cleaning of the inner wall of the discharge hole of different diameters, without the need to equip multiple sets of tools for different specifications of mold heads. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a quick cleaning tool for the die head of a plastic granulator proposed in this utility model; Figure 2 This is a partial cross-sectional view of a quick cleaning tool for the die head of a plastic granulator proposed in this utility model; Figure 3 This utility model proposes a quick cleaning tool for the die head of a plastic pelletizer. Figure 2 Schematic diagram of structure A in the middle; Figure 4 This is a schematic diagram of the cleaning component structure of a quick cleaning tool for the die head of a plastic granulator proposed in this utility model; Figure 5 This is a partially exploded three-dimensional diagram of a quick cleaning tool for the die head of a plastic granulator proposed in this utility model.

[0015] Legend: 1. Mounting sleeve; 2. Copper plate; 3. Scraper head; 4. Handle; 5. Soft sleeve; 6. Cleaning assembly; 21. Inlay groove; 31. Connecting block; 32. Pin; 41. Through groove; 61. Fixing ring; 62. Sliding ring; 63. Vertical rod; 64. Fixing sleeve; 65. Slide plate; 66. Scraper blade; 67. Hinge rod. Detailed Implementation

[0016] 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.

[0017] Reference Figures 1-5 This utility model provides an embodiment of a quick cleaning tool for the die head of a plastic granulator, including a mounting sleeve 1. A copper plate 2 is fixedly mounted on the mounting sleeve 1 by bolts. A scraper head 3 is detachably connected to the copper plate 2. A handle 4 is fixedly connected to the side of the mounting sleeve 1 away from the copper plate 2. A cleaning component 6 is provided at the end of the handle 4 away from the mounting sleeve 1. The top of the scraper head 3 is flat and its lower side is inclined, used to clean the gap between the die head and the die opening. The cleaning component 6 is used to clean the inner wall of the die opening. The scraper head 3 adopts an irregular design of "flat top + inclined lower side". Targeting the narrow space between the die head and the die opening, it uses the acute angle of the inclined surface to cut into the residual plastic material in the gap. The flat top is used to scrape the residue off the die opening surface. The cleaning component 6 focuses on the annular material accumulation on the inner wall of the die opening and realizes the extension and contact of the scraper blade through mechanical transmission, adapting to the cleaning of the inner wall of the die opening with different diameters.

[0018] Reference Figures 2-4The cleaning component 6 includes a retaining ring 61, which is fixedly connected to the end of the handle 4 away from the mounting sleeve 1. A sliding ring 62 is slidably connected to the handle 4. The retaining ring 61 and the sliding ring 62 are elastically connected by a return spring. A retaining sleeve 64 is fixedly connected to the end of the retaining ring 61 away from the handle 4. A sliding plate 65 is slidably connected to the inner wall of the retaining sleeve 64. A scraper 66 is fixedly connected to the outer wall of the sliding plate 65. A hinge rod 67 is hinged to the outer wall of the sliding plate 65. A vertical rod 63 is hinged to the end of the hinge rod 67 away from the sliding plate 65. The vertical rod 63 is fixed to the sliding ring 62, passes through the handle 4, and is slidably connected to the handle 4. The scraper 66 passes through the retaining sleeve 64 and is slidably connected to the retaining sleeve 64. Next, by pushing the sliding ring 62 away from the fixed ring 61, the vertical rod 63 moves axially along the handle 4, which in turn moves the hinge rod 67, pulling the slide plate 65 radially inward on the inner wall of the fixed sleeve 64, causing the scraper 66 to retract and fit against the inner wall of the die opening; after releasing the sliding ring 62, the return spring releases its elasticity, pulling the sliding ring 62 back to its original position, the hinge rod 67 drives the slide plate 65 back to its original position, and the scraper 66 back to its original position. In this way, it can be adapted to die openings of different diameters and meet the cleaning needs of the inner wall of different discharge holes. During cleaning, the scraper 66 fits tightly against the inner wall, and rotating the handle 4 can achieve ring scraping, thoroughly removing the molten plastic deposits attached to the inner wall and preventing the solidified material from affecting the smoothness of granulation.

[0019] Reference Figure 5 The copper plate 2 has an inlay groove 21 and an insertion hole. A connecting block 31 is fixedly connected to the outer wall of the scraper head 3. The connecting block 31 matches the inlay groove 21. The connecting block 31 can be fixed in the inlay groove 21 by a pin 32. In this way, the scraper head 3 can be easily replaced after it is worn.

[0020] Reference Figure 1 A soft sleeve 5 is fitted onto the handle 4, and the soft sleeve 5 is provided with anti-slip texture.

[0021] It should be noted that all standard parts used in this application can be purchased from the market, and the specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. In addition, the standard parts are all conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art.

[0022] Working principle: In use, the scraper head 3 is inserted into the gap between the die head and the die opening. The sharp angle of the inclined surface is used to cut into the residual plastic material in the gap. The flat top is used to scrape the residue against the die opening surface. When it is necessary to clean the inner wall of the die opening, the sliding ring 62 is pushed away from the fixed ring 61, which drives the vertical rod 63 to move along the handle 4 axially. This drives the hinge rod 67 to move, pulling the slide plate 65 to slide radially inward on the inner wall of the fixed sleeve 64, so that the scraper blade 66 retracts and fits against the inner wall of the die opening. After the sliding ring 62 is released, the return spring releases its elasticity, pulling the sliding ring 62 to return to its original position. The hinge rod 67 drives the slide plate 65 to return to its original position, which in turn drives the scraper blade 66 to abut against the inner wall of the die opening. Then, the handle 4 is rotated to achieve circular scraping and thoroughly remove the molten plastic deposits attached to the inner wall.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick cleaning tool for the die head of a plastic granulator, comprising an installation sleeve (1), characterized in that: The mounting sleeve (1) is fixedly mounted with a copper plate (2) by bolts. A scraper head (3) is detachably connected to the copper plate (2). A handle (4) is fixedly connected to the side of the mounting sleeve (1) away from the copper plate (2). A cleaning component (6) is provided at the end of the handle (4) away from the mounting sleeve (1). The top of the scraper (3) is flat and the bottom is inclined, which is used to clean the gap between the mold head and the mold opening. The cleaning component (6) is used to clean the inner wall of the mold head and the mold opening.

2. The quick cleaning tool for the die head of a plastic pelletizer according to claim 1, characterized in that: The copper plate (2) has an inlay groove (21) and an insertion hole is provided in the inlay groove (21).

3. The quick cleaning tool for the die head of a plastic pelletizer according to claim 2, characterized in that: A connecting block (31) is fixedly connected to the outer wall of the scraper (3). The connecting block (31) matches the inlay groove (21). The connecting block (31) can be fixed in the inlay groove (21) by a pin (32).

4. The quick cleaning tool for the die head of a plastic granulator according to claim 1, characterized in that: The cleaning component (6) includes a fixing ring (61), which is fixedly connected to the end of the handle (4) away from the mounting sleeve (1). A sliding ring (62) is slidably connected to the handle (4). The fixing ring (61) and the sliding ring (62) are elastically connected by a return spring. A fixing sleeve (64) is fixedly connected to the end of the fixing ring (61) away from the handle (4). A sliding plate (65) is slidably connected to the inner wall of the fixing sleeve (64). A scraper (66) is fixedly connected to the outer wall of the sliding plate (65). A hinge rod (67) is hinged to the outer wall of the sliding plate (65). A vertical rod (63) is hinged to the end of the hinge rod (67) away from the sliding plate (65). The vertical rod (63) is fixed to the sliding ring (62).

5. A quick cleaning tool for the die head of a plastic granulator according to claim 4, characterized in that: The vertical rod (63) passes through the handle (4) and is slidably connected to the handle (4), and the scraper (66) passes through the fixing sleeve (64) and is slidably connected to the fixing sleeve (64).

6. The quick cleaning tool for the die head of a plastic granulator according to claim 4, characterized in that: The handle (4) has a through groove (41), and the middle connection of the sliding ring (62) slides in the through groove (41).

7. The quick cleaning tool for the die head of a plastic pelletizer according to claim 1, characterized in that: A soft sleeve (5) is fitted onto the handle (4), and the soft sleeve (5) is provided with anti-slip texture.