A melt indexer barrel cleaning tool

Abstract

The utility model relates to a melt index instrument auxiliary equipment technical field, concretely relates to a melt index instrument material cylinder cleaning tool for cleaning the inner wall of the material cylinder of melt index instrument, including cleaning rod, guide disc and handle, the cleaning rod is used for putting into the material cylinder of melt index instrument, the cleaning rod is equipped with outer thread along its axial direction, the cleaning rod penetrates the guide disc, wherein the guide disc has internal thread and is connected with the cleaning rod threadedly, the handle is arranged at the top end of the cleaning rod, the utility model is through the gauze cooperation of the convex rib of cleaning rod lower extreme, and the convex rib forms reliable spacing to gauze, and the composite motion of '' rotation + up and down movement '' makes gauze and material cylinder inner wall fully contact, and cleaning is more comprehensive, thorough, especially suitable for removing the closely adhered residual material, and the conical structure of cleaning rod bottom end can consider dredging function, and further improve cleaning practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for melt flow indexers, specifically to a cleaning tool for the barrel of a melt flow indexer. Background Technology

[0002] The melt flow indexer is a core device for measuring the melt flow rate of thermoplastics. During the test, the thermoplastic melts at high temperatures inside the barrel. After the test, molten material is easily left on the inner wall of the barrel. If the residual material is not cleaned in time, it will solidify and adhere to the wall after cooling, and may even carbonize or cross-link. This not only affects the purity of subsequent test samples and leads to deviations in test data, but may also wear down the inner wall of the barrel and shorten the service life of the equipment.

[0003] The existing barrel cleaning rod has the following shortcomings: First, it is difficult to achieve uniform up-and-down movement and rotation at the same speed during operation, resulting in low cleaning efficiency; second, the positioning accuracy between the tool and the barrel is insufficient, making it easy to shake and scratch the inner wall of the barrel; and third, the operation feel is not good, and prolonged use can easily lead to hand fatigue.

[0004] Therefore, there is an urgent need for a barrel cleaning tool that is easy to operate, has good cleaning effect, and can protect the equipment. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a cleaning tool for a melt indexer barrel, which realizes the synchronous operation of the cleaning rod moving up and down and rotating at a uniform speed, thereby improving cleaning efficiency; at the same time, it optimizes the operating feel, avoids scratching the inner wall of the barrel, and extends the service life of the equipment.

[0006] To achieve the above objectives, this utility model provides a cleaning tool for the barrel of a melt flow indexer, used for cleaning the inner wall of the barrel of the melt flow indexer, comprising: Cleaning rod, used to insert into the barrel of the melt flow indexer; The guide disc has an external thread along its axial direction, and the cleaning rod passes through the guide disc, wherein the guide disc has an internal thread and is threadedly connected to the cleaning rod. The handle is located at the top of the cleaning rod.

[0007] Preferably, the guide disc includes a disc body and a sleeve integrally formed on the disc body, wherein a cleaning rod passes through the sleeve and an internal thread is formed on the inner wall of the sleeve; The bottom of the disc is equipped with a rubber pad that contacts the outer wall of the melt flow indexer above the material cylinder.

[0008] Preferably, a limiting protrusion is formed at the top of the cleaning rod, and the diameter of the limiting protrusion is larger than the inner diameter of the sleeve.

[0009] Preferably, the upper part of the limiting protrusion ring has a protruding hexagonal block, and the planar area of ​​the hexagonal block is smaller than that of the limiting protrusion ring; One end of the handle has a hexagonal hole for fitting onto a hexagonal block.

[0010] Preferably, the other end of the handle is provided with an opening and a handle, and the handle is rotatably disposed in the opening via a bearing.

[0011] Preferably, the hexagonal block has a hollow structure, and at least one ball is provided along the circumference of the cleaning rod and installed inside the hexagonal block. The ball extends out of the outer wall of the hexagonal hole, and a corresponding locking hole is opened on the inner wall of the hexagonal hole at one end of the handle.

[0012] Preferably, the outer wall of the cleaning rod is formed with strip-shaped protrusions, and the protrusions are distributed along the circumference of the cleaning rod; The external thread and the raised edge of the cleaning rod are distributed from top to bottom along the axial direction of the cleaning rod, and the external thread covers a length of the cleaning rod greater than the raised edge.

[0013] Preferably, the bottom end of the cleaning rod is tapered.

[0014] Preferably, the handle at the end of the handle is covered with a rubber anti-slip layer.

[0015] The beneficial effects of this utility model are: 1. This utility model uses the convex ridge at the lower end of the cleaning rod to cooperate with the gauze. The convex ridge provides reliable positioning for the gauze. At the same time, the combined motion of "rotation + up and down movement" ensures that the gauze is in full contact with the inner wall of the material cylinder, making the cleaning more comprehensive and thorough. It is especially suitable for removing tightly adhered residual materials. The conical structure at the bottom of the cleaning rod can also serve as a dredging function, further improving the practicality of cleaning.

[0016] 2. Convenient and comfortable operation: The handle uses hexagonal blocks and hexagonal holes to ensure stable torque transmission, and the ball-bearing snap-fit ​​structure allows for quick assembly and disassembly of the handle; the handle is set by a bearing rotation and covered with a rubber anti-slip layer, resulting in low friction and a stable grip during operation, effectively reducing hand fatigue and improving the operating experience.

[0017] 3. Protect equipment safety: The rubber pad at the bottom of the guide plate avoids hard contact that could scratch the outer wall of the equipment, while also enhancing positioning stability; the limiting ring prevents the cleaning rod from moving too far down and hitting the bottom of the material cylinder.

[0018] 4. Stable and reliable structure: The components are assembled by means of threaded connection, snap-fit ​​and other methods, which makes the connection firm, the transmission smooth, and it is not easy to be damaged after long-term use, with low maintenance cost. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 Enlarged view of point A.

[0021] The numbers on the map are: 1-Guide plate; 11-Plate body; 12-Sleeve; 13-Rubber pad; 2-Cleaning rod; 21-Limiting protrusion ring; 22-Hexagonal block; 23-Pellet; 24-Protrusion; 3-Handle; 31-Handle handle; 32-Rubber anti-slip layer. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] This utility model proposes a cleaning tool for the barrel of a melt flow indexer, such as... Figures 1 to 4 As shown, it includes a cleaning rod 2, a guide plate 1, and a handle 3.

[0025] The cleaning rod 2 is inserted into the barrel of the melt flow indexer. It has external threads along its axial direction and strip-shaped ridges 24 on its outer wall. The ridges 24 are distributed circumferentially along the cleaning rod 2. The external threads and ridges 24 are distributed axially from top to bottom along the cleaning rod 2, and the length of the external threads covering the cleaning rod 2 is greater than the length of the ridges 24. The bottom end of the cleaning rod 2 is tapered, facilitating alignment with the discharge port at the bottom of the barrel and aiding in clearing residual material from narrow channels. During cleaning, gauze is wrapped around the ridges 24 at the lower end of the cleaning rod 2. The circumferential distribution of the ridges 24 limits the gauze, preventing it from slipping or shifting after wrapping, ensuring stable contact between the gauze and the inner wall of the barrel during cleaning.

[0026] The guide disc 1 is threadedly connected to the cleaning rod 2, which passes through the guide disc 1. The guide disc 1 has an internal thread that matches the external thread of the cleaning rod 2. The guide disc 1 includes a disc body 11 and a sleeve 12 integrally formed on the disc body 11. The cleaning rod 2 passes through the sleeve 12, and the internal thread is formed on the inner wall of the sleeve 12. A rubber pad 13 is provided at the bottom of the disc body 11. During cleaning, the rubber pad 13 contacts the outer wall of the melt indexer above the material cylinder, which can not only achieve stable positioning of the guide disc 1, but also play a buffering role to avoid scratches caused by hard contact between the guide disc 1 and the outer wall of the equipment. At the same time, it enhances the friction between the guide disc 1 and the surface of the equipment, preventing the guide disc 1 from shifting during the cleaning process.

[0027] A handle 3 is located at the top of the cleaning rod 2 and is used to drive the cleaning rod 2 to rotate. A limiting protrusion 21 is formed at the top of the cleaning rod 2. The diameter of the limiting protrusion 21 is larger than the inner diameter of the sleeve 12 to prevent the cleaning rod 2 from moving excessively downward. Above the limiting protrusion 21 is a raised hexagonal block 22. The plane area of ​​the hexagonal block 22 is smaller than that of the limiting protrusion 21. One end of the handle 3 has a hexagonal hole for fitting onto the hexagonal block 22. The hexagonal structure ensures stable torque transmission and prevents relative sliding between the handle 3 and the cleaning rod 2.

[0028] The other end of the handle 3 has an opening and a handle 31. The handle 31 is rotatably mounted in the opening via a bearing, and the handle 31 is covered with a rubber anti-slip layer 32, which reduces friction during rotation, improves the smoothness of operation, enhances grip comfort and anti-slip performance, and reduces hand fatigue caused by prolonged operation. The hexagonal block 22 has a hollow structure, and at least one ball bearing 23 is provided along the circumference of the cleaning rod 2 and installed inside the hexagonal block 22. Part of the ball bearing 23 protrudes from the outer wall of the hexagonal block 22. The inner wall of the handle 3 with the hexagonal hole has a locking hole corresponding to the ball bearing 23. Through the locking engagement of the ball bearing 23 with the locking hole, the handle 3 and the hexagonal block 22 can be quickly positioned and disassembled, which facilitates the storage and maintenance of the tool.

[0029] Before use, check the connection status of each component: ensure that the hexagonal hole of the handle 3 and the hexagonal block 22 of the cleaning rod 2 are properly fitted, the ball 23 is inserted into the corresponding hole, and the handle 3 and the cleaning rod 2 are firmly fixed; check that the internal thread of the sleeve 12 of the guide plate 1 and the external thread of the cleaning rod 2 mesh smoothly without jamming; confirm that the rubber pad 13 at the bottom of the guide plate 1 is firmly attached and has not fallen off; check that the rubber anti-slip layer 32 of the handle 31 is undamaged and the bearing rotates flexibly.

[0030] During cleaning preparation, select clean gauze, cut it into strips of appropriate width, and tightly wrap it around the area where the protrusions 24 are located at the lower end of the cleaning rod 2. During the wrapping process, ensure that the gauze covers all the protrusions 24 and forms a limit through the circumferential distribution of the protrusions 24 to prevent the gauze from loosening or shifting. If necessary, the gauze can be tightened appropriately to enhance its fit with the protrusions 24.

[0031] During the cleaning operation, the cylinder die head of the melt indexer is disassembled, the conical bottom end of the cleaning rod 2 is aligned with the cylinder opening, and it is slowly inserted into the cylinder. At the same time, the position of the guide plate 1 is adjusted so that the rubber pad 13 at the bottom of the plate 11 is tightly attached to the outer wall of the equipment above the cylinder, so as to achieve stable positioning of the tool. The operator puts on high-temperature resistant gloves, holds the rubber anti-slip handle 31 at the other end of the handle 3, and rotates the handle 3 at a constant speed. The handle 3 drives the cleaning rod 2 to rotate through the engagement of the hexagonal block 22 and the hexagonal hole. Due to the threaded engagement between the cleaning rod 2 and the guide plate 1, the cleaning rod 2 moves downward at a constant speed along its own axis while rotating. The gauze covered on the convex ridge 24 moves synchronously with the cleaning rod 2, rotating and wiping along the inner wall of the material cylinder, gradually removing the residual material on the inner wall. When the cleaning rod 2 moves down to the point where the limiting protrusion 21 contacts the top of the sleeve 12 of the guide plate 1, it stops moving down. At this time, the handle 3 can be rotated in the opposite direction to drive the cleaning rod 2 to move up at a constant speed. During the upward movement, the gauze continues to wipe the inner wall of the material cylinder in the opposite direction to further remove residual materials. If the gauze becomes dirty, it needs to be replaced with a new clean gauze, and then the cleaning operation should continue until there is no obvious residue on the inner wall of the barrel, at which point the cleaning is complete.

[0032] After cleaning, completely pull the cleaning rod 2 out of the material cylinder, remove the gauze, wipe the surface residue of the cleaning rod 2, guide plate 1 and other parts with a clean cloth, and store each part after disassembly for future use.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0034] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cleaning tool for a melt flow indexer barrel, used to clean the inner wall of the melt flow indexer barrel, characterized in that, include: Cleaning rod, used to insert into the barrel of the melt flow indexer; The guide disc has an external thread along its axial direction, and the cleaning rod passes through the guide disc, wherein the guide disc has an internal thread and is threadedly connected to the cleaning rod. The handle is located at the top of the cleaning rod.

2. The material cylinder cleaning tool for a melt indexer according to claim 1, characterized in that, The guide plate includes a plate body and a sleeve integrally formed on the plate body, wherein a cleaning rod passes through the sleeve and an internal thread is formed on the inner wall of the sleeve. The bottom of the disc is equipped with a rubber pad that contacts the outer wall of the melt flow indexer above the material cylinder.

3. The material cylinder cleaning tool for a melt indexer according to claim 2, characterized in that, The top of the cleaning rod has a limiting protrusion ring, the diameter of which is larger than the inner diameter of the sleeve.

4. The material cylinder cleaning tool for a melt indexer according to claim 3, characterized in that, The limiting protrusion ring has a raised hexagonal block above it, and the planar area of ​​the hexagonal block is smaller than that of the limiting protrusion ring. One end of the handle has a hexagonal hole for fitting onto a hexagonal block.

5. A cleaning tool for a melt flow indexer according to claim 4, characterized in that, The other end of the handle is provided with an opening and a handle, and the handle is rotatably disposed in the opening via a bearing.

6. A cleaning tool for a melt flow indexer according to claim 4, characterized in that, The hexagonal block has a hollow structure, and at least one ball is provided along the circumference of the cleaning rod and installed inside the hexagonal block. The ball extends out of the outer wall of the hexagonal hole, and the inner wall of the handle end with the hexagonal hole has a corresponding locking hole.

7. A cleaning tool for a melt flow indexer according to claim 1, characterized in that, The outer wall of the cleaning rod is formed with strip-shaped protrusions, and the protrusions are distributed along the circumference of the cleaning rod; The external thread and the raised edge of the cleaning rod are distributed from top to bottom along the axial direction of the cleaning rod, and the external thread covers a length of the cleaning rod greater than the raised edge.

8. A cleaning tool for a melt flow indexer according to claim 1, characterized in that, The bottom end of the cleaning rod is tapered.

9. A cleaning tool for a melt flow indexer according to claim 5, characterized in that, The handle at the end of the handle is covered with a rubber anti-slip layer.

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