Cylinder cleaning pad and extrusion cylinder cleaning structure
By designing a hardness-gradient cleaning pad, the deformation loose residue of the front cushion body and the high hardness of the rear cushion body are used for secondary cleaning pads, which solves the problem of easy jamming and scratching of existing cushion pads, and improves the squeeze Efficiency and effectiveness of press cylinder cleaning.
Patent Information
- Application Number
- CN202420376911.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-28
AI Technical Summary
When cleaning the extrusion cylinder, existing cleaning pads are easily stuck by residues with higher adhesion firmness, resulting in jamming or scratching the extrusion cylinder.
Design a cylinder cleaning pad including a front mat and a rear mat. The hardness of the front mat is smaller than that of the rear mat. When the front mat is scraped and swept the residue for the first time, it can deform and loosen the residue due to the small hardness. The rear mat is Scrape and sweep at a higher hardness to ensure cleaning effect.
It effectively avoids the situation where the cylinder cleaning pad is stuck due to excessive hardness, reduces scratches on the hole wall of the compression cylinder, and improves the cleaning effect of the inner hole of the compression cylinder.
Smart Images
Figure CN222491555U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aluminum alloy processing, in particular to a cylinder cleaning pad and an extrusion cylinder cleaning structure. Background Art
[0002] In the field of aluminum alloy extrusion processing, the extrusion barrel is one of the most critical components of the extruder. It is responsible for accommodating the aluminum alloy ingot and limiting the ingot together with the extrusion rod so that it can be formed into the shape to be processed through the die. Therefore, the cleanliness of the inner hole of the extrusion barrel directly determines the quality of the extruded product. Therefore, it is necessary to clean the inner hole of the extrusion barrel regularly to ensure that there is no inclusion and residue on the hole wall of the barrel.
[0003] At present, cylindrical steel pads with high hardness are generally used as cleaning pads to extrude and clean the inner hole of the extrusion cylinder. However, during the process of inserting this type of cleaning pad into the inner hole of the cylinder and extruding it along its axial direction, the cleaning pad is easily stuck by residues with high adhesion strength, which not only gets the cleaning pad stuck in the inner hole of the cylinder, but also easily scratches the extrusion cylinder. Utility Model Content
[0004] The utility model aims to provide a cylinder cleaning pad and an extrusion cylinder cleaning structure to solve the technical problem that the existing cylinder cleaning pad is easily stuck by residues with high adhesion when cleaning the extrusion cylinder, which not only causes the cylinder cleaning pad to be stuck in the inner hole of the cylinder, but also easily causes scratches on the extrusion cylinder.
[0005] In order to solve the above problems, the utility model provides a barrel cleaning pad, which is used for cleaning the extrusion barrel in an extruder. The barrel cleaning pad includes a front pad body and a rear pad body fixed to the tail end of the front pad body along its axial direction. The front pad body and the rear pad body are both matched with the inner hole of the extrusion barrel. The hardness of the front pad body is greater than or equal to the hardness of the extrusion ingot and less than the hardness of the rear pad body.
[0006] Optionally, the front gasket body and the inner hole of the cylinder are in interference fit, and the rear gasket body and the inner hole of the cylinder are in clearance fit.
[0007] Optionally, the outer diameter of the front pad body is 0.5 mm to 1 mm larger than the diameter of the inner hole of the cylinder, and the outer diameter of the rear pad body is 0.5 mm to 1 mm smaller than the diameter of the inner hole of the cylinder.
[0008] Optionally, the front pad body comprises a base body and convex teeth circumferentially arranged on the outer side of the base body; the convex teeth are annular convex teeth and are multiple in number, the multiple annular convex teeth are arranged at intervals along the axial direction of the base body, and a first accommodating groove is formed between any two adjacent annular convex teeth;
[0009] Alternatively, the convex tooth is a spiral convex tooth, and along the axial direction of the base body, the spiral convex tooth includes a plurality of spiral segments connected in sequence, the spiral segments coil around the circumference of the base body and extend a preset distance along the axial direction of the base body, and a first accommodating groove is formed between any two adjacent spiral segments.
[0010] Optionally, the thickness of the protruding teeth gradually decreases in a direction away from the base body.
[0011] Optionally, the rear wall surface of the protruding tooth is parallel to the radial cross section of the base; along the direction away from the base, the front wall surface of the protruding tooth is inclined from front to rear and intersects with the rear wall surface.
[0012] Optionally, the rear pad body is provided with a second accommodating groove.
[0013] Optionally, one of the head end of the rear pad body and the tail end of the front pad body is provided with a plug connector, and the other is provided with a plug slot, and the plug connector is plugged into the plug slot.
[0014] Optionally, the plug connector is located at the head end of the rear pad body, and the plug connector is tapered in a direction away from the rear pad body; the plug slot is located at the tail end of the front pad body and matches the plug connector.
[0015] The utility model also provides an extrusion cylinder cleaning structure, including an extrusion cylinder, an extrusion drive member and the above-mentioned cylinder cleaning pad, the tail end of the rear pad body in the cylinder cleaning pad is fixedly arranged on the extrusion end of the extrusion drive member, and the cylinder cleaning pad is cooperated and inserted into the cylinder inner hole of the extrusion cylinder.
[0016] The cylinder cleaning pad provided by the utility model can be applied to the extrusion cylinder cleaning structure. When the inner hole of the cylinder needs to be cleaned, the extrusion driving part drives the cylinder cleaning pad to be inserted into the inner hole of the cylinder from one end, and pushes the rear pad body and the front pad body to move in the inner hole of the cylinder from back to front. During the movement, the front pad body scrapes the residues adhering to the wall of the hole in the cylinder for the first time. Most of the residues can be scraped off by the front pad body and move synchronously with the front pad body at the front end of the front pad body. A small number of residues with high adhesion firmness cannot be scraped off by the front pad body. Since the hardness of the front pad body is relatively small, the front pad body and the part of the residue can be deformed accordingly when squeezed against each other. The front pad body can move forward relative to the part of the residue and scrape it to loosen it during the forward movement, thereby ensuring that the front pad body can continue to move forward to reduce the occurrence of the front pad body being stuck due to its high hardness. At the same time, it can also reduce the scratches on the wall of the hole in the cylinder caused by the front pad body being stuck.
[0017] As the drum cleaning pad continues to move forward, the rear pad body with higher hardness reaches the residue with higher adhesion firmness that has not been removed by the front pad body. Since the adhesion firmness of this part of the residue has been greatly reduced after the first scraping and loosening action of the front pad body and the hardness of the rear pad body is relatively large, the rear pad body can easily scrape it off when it performs a second scraping on the residue, thereby improving the cleaning effect of the drum cleaning pad on the drum inner hole and ensuring the smooth movement of the drum cleaning pad in the drum inner hole, reducing the occurrence of the drum cleaning pad getting stuck or even stuck and unable to be pulled out, which will cause damage to the wall of the drum inner hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A cross-sectional exploded view of an extrusion cylinder and a cylinder cleaning pad in an extrusion cylinder cleaning structure provided by an embodiment of the utility model;
[0020] Figure 2 A cross-sectional view of a drum cleaning pad provided in an embodiment of the utility model.
[0021] Description of reference numerals:
[0022] 10-cleaning cylinder pad; 20-extrusion cylinder; 21-cylinder inner hole; 100-front pad body; 110-base body; 120-annular convex teeth; 121-front wall surface; 122-rear wall surface; 130-first accommodating groove; 140-plug-in groove; 200-rear pad body; 210-second accommodating groove; 220-plug-in connector. DETAILED DESCRIPTION
[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] This embodiment provides a drum cleaning pad 10, such as Figure 1 and Figure 2 As shown, it is used for cleaning the extrusion barrel 20 in the extruder. The barrel cleaning pad 10 includes a front pad body 100 and a rear pad body 200 fixed at the tail end of the front pad body 100 along its axial direction. The front pad body 100 and the rear pad body 200 are both matched with the barrel inner hole 21 of the extrusion barrel 20. The hardness of the front pad body 100 is greater than or equal to the hardness of the extrusion ingot and less than the hardness of the rear pad body 200.
[0027] The present embodiment also provides an extrusion cylinder cleaning structure, including an extrusion cylinder 20, an extrusion drive member and the above-mentioned cylinder cleaning pad 10, wherein the tail end of the rear pad body 200 in the cylinder cleaning pad 10 is fixedly arranged at the extrusion end of the extrusion needle, and the cylinder cleaning pad 10 is cooperatively inserted into the cylinder inner hole 21 of the extrusion cylinder 20.
[0028] The present embodiment provides a cylinder cleaning pad 10 and an extrusion cylinder cleaning structure, wherein the cylinder cleaning pad 10 includes a front pad body 100 with relatively low hardness capable of performing a primary cleaning treatment on the cylinder inner hole 21 of the extrusion cylinder 20, and a rear pad body 200 with relatively high hardness capable of performing a secondary cleaning treatment on the cylinder inner hole 21; wherein the extrusion cylinder cleaning structure includes an extrusion cylinder 20 for accommodating extruded ingots, the above-mentioned cylinder cleaning pad 10 for cleaning the cylinder inner hole 21 of the extrusion cylinder 20, and an extrusion drive member for pushing the cylinder cleaning pad 10 to move in the cylinder inner hole 21.
[0029] When the inner hole 21 of the cylinder needs to be cleaned, the extrusion drive member drives the cylinder cleaning pad 10 to be inserted into the inner hole 21 of the cylinder from one end, and pushes the rear pad body 200 and the front pad body 100 to move in the inner hole 21 of the cylinder from the back to the front. During the movement, the front pad body 100 first scrapes the residues adhering to the wall of the inner hole 21 of the cylinder. Most of the residues can be scraped off by the front pad body 100 and move synchronously with the front pad body 100 at the front end of the front pad body 100. A small amount of residues with high adhesion strength cannot be scraped off. The residue cannot be scraped off by the front pad body 100. Since the hardness of the front pad body 100 is relatively low, the front pad body 100 and the residue can be deformed accordingly when squeezed against each other. The front pad body 100 can move forward relative to the residue and scrape and loosen it during the forward movement, thereby ensuring that the front pad body 100 can continue to move forward and reduce the occurrence of the front pad body 100 being stuck due to its high hardness. At the same time, it can also reduce the scratches on the wall of the inner hole 21 of the cylinder caused by the front pad body 100 being stuck.
[0030] As the barrel cleaning pad 10 continues to move forward, the rear pad body 200 with higher hardness reaches the residues with higher adhesion firmness that have not been removed by the front pad body 100. Since the adhesion firmness of this part of the residue has been greatly reduced after the first scraping and loosening action of the front pad body 100 and the hardness of the rear pad body 200 is relatively large, the rear pad body 200 can easily scrape off the residues during the second scraping of the residues, thereby improving the cleaning effect of the barrel cleaning pad 10 on the barrel inner hole 21 and ensuring the smooth movement of the barrel cleaning pad 10 in the barrel inner hole 21, reducing the occurrence of the barrel cleaning pad 10 getting stuck or even stuck and unable to be pulled out, and causing damage to the hole wall of the barrel inner hole 21.
[0031] Specifically, the extruded ingot can be an aluminum alloy ingot, and the front pad body 100 can be made of a 6005 aluminum alloy structure formed by integral casting, wherein the composition of the 6005 aluminum alloy meets the requirements of the national standard; after the integral casting of the front pad body 100 is completed, it is kept at a temperature of 530±5℃ for two hours, then water-cooled and quenched, and then aged at 190±5℃ for 3 hours to increase the hardness, ensuring that the Weber hardness of the front pad body 100 reaches ≥15hw. The rear pad body 200 can be made of the same hot alloy tool steel as the extrusion cylinder 20.
[0032] Specifically, in this embodiment, Figure 1As shown, the front pad body 100 and the cylinder inner hole 21 are interference fit, and the rear pad body 200 and the cylinder inner hole 21 are clearance fit. In the process of the cylinder cleaning pad 10 squeezing and moving in the cylinder inner hole 21 to clean it, the outer peripheral wall of the front pad body 100 with a smaller hardness can be squeezed and fully contacted with the hole wall of the cylinder inner hole 21, thereby improving the scraping strength of the front pad body 100 on the residues in the process of moving forward relative to the cylinder inner hole 21, and correspondingly increasing the scraping amount of the residues by the front pad body 100, and at the same time, it can also play a stronger loosening effect on the residues with higher adhesion firmness. In addition, since the hardness of the front pad body 100 is less than the hardness of the extrusion cylinder 20, the front pad body 100 scratches the hole wall of the cylinder inner hole 21 less or even does not scratch in the process of moving forward relative to the cylinder inner hole 21.
[0033] As the barrel cleaning pad 10 moves forward, the loosened residues that have not yet been scraped off are in a convex state, and the convex height is greater than the matching clearance between the rear pad body 200 and the wall of the inner hole 21 of the barrel. When the rear pad body 200 moves forward to the loosened residues, the rear pad body 200 with higher hardness can scrape them a second time, thereby scraping them off; due to the matching clearance between the rear pad body 200 and the inner hole 21 of the barrel, the rear pad body 200 can improve the forward movement smoothness of the rear pad body 200 and the barrel cleaning pad 10 while ensuring the hardness of the connection clamped between the extrusion needle and the front pad body 100 and the secondary scraping effect on the loosened residues, and effectively reduce the scratches on the wall of the inner hole 21 of the barrel caused by the forward movement process.
[0034] Specifically, the outer diameter of the front pad body 100 is 0.5 mm to 1 mm larger than the diameter of the inner hole 21 of the cylinder, and the outer diameter of the rear pad body 200 is 0.5 mm to 1 mm smaller than the diameter of the inner hole 21 of the cylinder.
[0035] Optionally, in this embodiment, if Figure 2As shown, the front pad body 100 includes a base body 110 and convex teeth circumferentially arranged on the outside of the base body 110; the convex teeth are annular convex teeth 120 and there are multiple of them, and the multiple annular convex teeth 120 are arranged at intervals along the axial direction of the base body 110, and a first accommodating groove 130 is formed between any two adjacent annular convex teeth 120. During the cleaning process, compared with the interference fit between the entire outer circumferential wall of the front pad body 100 and the inner hole 21 of the cylinder, in the front pad body 100 of this embodiment, only the interference fit between the annular boss and the inner hole 21 of the cylinder is provided, thereby reducing the extrusion action area, improving the smoothness of the front pad body 100 being squeezed through the inner hole 21 of the cylinder, and correspondingly further reducing the occurrence of the front pad body 100 being stuck during the forward movement process; at the same time, as the front pad body 100 moves forward, the residue can be fully scraped by the outer circumferential walls of the multiple annular bosses for multiple times, and the residue scraped off in the middle can enter the first accommodating groove 130 in the corresponding area, thereby reducing the interference and obstruction of the front pad body 100 caused by the residue scraped off in the middle, further improving the smoothness of the forward movement of the front pad body 100 and its scraping effect on the residue, and at the same time, it can further reduce the scratches caused by the front pad body 100 to the wall of the inner hole 21 of the cylinder.
[0036] In addition to the above-mentioned annular form, the convex teeth can also be spiral convex teeth. Along the axial direction of the base 110, the spiral convex teeth include a plurality of spiral segments connected in sequence. The spiral segments are coiled around the circumference of the base 110 and extend a preset distance along the axial direction of the base 110. A first receiving groove 130 is formed between any two adjacent spiral segments. Its working principle and effect are similar to those of the above-mentioned annular convex teeth 120, and will not be repeated here.
[0037] In this embodiment, Figure 2 As shown, the thickness of the convex teeth gradually decreases in the direction away from the base 110. The convex teeth are conical, and the constricted end of the convex teeth is interference fit with the hole wall of the inner hole 21 of the cylinder, which can ensure the scraping and cleaning effect of the residue; at the same time, the extrusion action area between the convex teeth and the hole wall of the inner hole 21 of the cylinder is smaller, and the relative smoothness of the forward movement of the inner hole 21 of the cylinder is higher and it is less likely to be stuck; in addition, the first accommodating groove 130 between adjacent convex teeth has a larger accommodating space, which can fully accommodate the scraped residue, thereby further improving the cleaning effect of the front pad body 100 and the cylinder cleaning pad 10 on the inner hole 21 of the cylinder.
[0038] Specifically, in this embodiment, Figure 2As shown, the rear wall surface 122 of the protruding tooth is parallel to the radial section of the base 110 ; along the direction away from the base 110 , the front wall surface 121 of the protruding tooth is inclined from front to rear and intersects with the rear wall surface 122 . On the one hand, the rear wall surface 122 intersects with the front wall surface 121 at the outer end, and the outer end of the convex tooth is an arc. Correspondingly, the convex tooth is in line contact with the inner hole 21 of the cylinder. On the basis of ensuring that the residue is scraped all around the circumference, the base area of the convex tooth and the inner hole 21 of the cylinder is smaller, and the forward movement is smoother and the risk of getting stuck is lower; on the other hand, the rear wall surface 122 is parallel to the radial cross-section of the base 110, and the processing convenience is higher; on the other hand, along the front-to-back direction, the front wall surface 121 is a flared conical guide surface. When the front pad body 100 is inserted into the inner hole 21 of the cylinder, the front wall surface 121 can play a guiding role to improve the convenience of inserting the front pad body 100 into the inner hole 21 of the cylinder, and correspondingly improve the convenience of cleaning the inner hole 21 of the cylinder by the cleaning pad 10.
[0039] In this embodiment, Figure 2 As shown, the rear pad body 200 is provided with a second receiving groove 210, and the second receiving groove 210 is an annular groove or a spiral groove. On the one hand, when the rear pad body 200 performs a second scraping of the residue, the scraped residue can be accommodated in the second receiving groove 210, thereby reducing the interference of the scraped residue on the rear pad body 200, and correspondingly improving the forward movement smoothness of the rear pad body 200. On the other hand, the area of the rear pad body 200 that is different from the second accommodating groove 210 is convex relative to the second accommodating groove 210, and the convex area is continuous in the circumferential direction, thereby ensuring the strength and hardness of the outer peripheral wall of the rear pad body 200, and correspondingly ensuring the connection strength between it and the extrusion drive member and the front pad body 100 and the cleaning effect of the residue; at the same time, the provision of the second accommodating groove 210 can reduce the weight of the rear pad body 200, and reduce the impact of the falling of the rear pad body 200 by reducing its own weight, so that the scraping intensity of the rear pad body 200 on the circumferential areas of the inner wall of the cylinder is more balanced and the cleaning effect is more uniform, thereby reducing the situation where the rear pad body 200 falls due to its own weight, and the scraping and cleaning effect on the lower area of the inner hole 21 of the cylinder is higher, and the scraping and cleaning effect on the upper area is smaller and poorer.
[0040] Optionally, in this embodiment, one of the head end of the rear cushion body 200 and the tail end of the front cushion body 100 is provided with a plug connector 220, and the other is provided with a plug slot 140, and the plug connector 220 is plugged into the plug slot 140. The rear cushion body 200 and the front cushion body 100 are detachably plugged into each other through the plug connector 220 and the plug slot 140. During the cleaning process, the plug connector 220 and the plug slot 140 can be used to limit the relative positions of the front cushion body 100 and the rear cushion body 200 to ensure the cleaning stability of the inner hole 21 of the cylinder by both. After the cleaning is completed, when the front cushion body 100 is deformed, the plug connector 220 and the plug slot 140 can be removed to pull out the front cushion body 100, and a new front cushion body 100 can be replaced and plugged into the rear cushion body 200 to ensure the cleaning effect of the inner hole 21 of the cylinder in the next cleaning process.
[0041] Specifically, Figure 2 As shown, the plug connector 220 is located at the head end of the rear pad body 200, and the plug connector 220 is tapered in the direction away from the rear pad body 200; the plug slot 140 is located at the tail end of the front pad body 100 and matches the plug connector 220. During the cleaning process, the extrusion drive member applies force to the tail end, i.e., the rear end, of the rear pad body 200 to push the rear pad body 200 forward, and accordingly, the plug connector 220 squeezes the plug slot 140 from the back to the front to push the front pad body 100 forward. During this process, the tapered plug connector 220 and the plug slot 140 have a higher degree of tightness and firmness, thereby further ensuring the stability and firmness of the connection between the front pad body 100 and the rear pad body 200, and correspondingly further ensuring the cleaning effect of the drum cleaning pad 10 on the drum inner hole 21.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A barrel cleaning pad, used for cleaning the extrusion barrel (20) in an extruder, characterized in that: The cylinder cleaning pad (10) includes a front pad body (100) and a rear pad body (200) fixed to the rear end of the front pad body (100) along its axial direction. The front pad body (100) and the rear pad body (200) are both matched with the inner hole (21) of the extrusion cylinder (20). The hardness of the front pad body (100) is greater than or equal to the hardness of the extruded ingot and less than the hardness of the rear pad body (200).
2. The drum cleaning pad according to claim 1, characterized in that: The front pad body (100) and the inner hole (21) of the cylinder are in interference fit, and the rear pad body (200) and the inner hole (21) of the cylinder are in clearance fit.
3. The drum cleaning pad according to claim 2, characterized in that: The outer diameter of the front pad body (100) is 0.5 mm to 1 mm larger than the diameter of the inner hole (21) of the cylinder, and the outer diameter of the rear pad body (200) is 0.5 mm to 1 mm smaller than the diameter of the inner hole (21) of the cylinder.
4. The drum cleaning pad according to claim 2, characterized in that: The front pad body (100) comprises a base body (110) and convex teeth circumferentially arranged on the outside of the base body (110); the convex teeth are annular convex teeth (120) and are multiple in number, the multiple annular convex teeth (120) are arranged at intervals along the axial direction of the base body (110), and a first receiving groove (130) is formed between any two adjacent annular convex teeth (120); Alternatively, the convex tooth is a spiral convex tooth, and along the axial direction of the base (110), the spiral convex tooth includes a plurality of spiral segments connected in sequence, the spiral segments are coiled around the circumference of the base (110) and extend a preset distance along the axial direction of the base (110), and a first receiving groove (130) is formed between any two adjacent spiral segments.
5. The drum cleaning pad according to claim 4, characterized in that: The thickness of the protruding teeth gradually decreases in a direction away from the base body (110).
6. The drum cleaning pad according to claim 5, characterized in that: The rear wall surface (122) of the protruding tooth is parallel to the radial section of the base (110); along the direction away from the base (110), the front wall surface (121) of the protruding tooth is inclined from front to rear and intersects with the rear wall surface (122).
7. The drum cleaning pad according to any one of claims 1 to 6, characterized in that: The rear pad body (200) is provided with a second accommodating groove (210).
8. The drum cleaning pad according to any one of claims 1 to 6, characterized in that: One of the head end of the rear pad body (200) and the tail end of the front pad body (100) is provided with a plug connector (220), and the other is provided with a plug slot (140), and the plug connector (220) is plugged into the plug slot (140).
9. The drum cleaning pad according to claim 8, characterized in that: The plug connector (220) is located at the head end of the rear pad body (200), and the plug connector (220) is in a tapered shape in a direction away from the rear pad body (200); the plug slot (140) is located at the tail end of the front pad body (100) and matches the plug connector (220).
10. An extrusion cylinder cleaning structure, characterized in that: It comprises an extrusion cylinder (20), an extrusion drive member and a cleaning pad (10) as claimed in any one of claims 1 to 9, wherein the tail end of the rear pad body (200) in the cleaning pad (10) is fixedly arranged at the extrusion end of the extrusion drive member, and the cleaning pad (10) is inserted into the inner hole (21) of the extrusion cylinder (20).