Laser cladding pinch roll

Abstract

The utility model provides a laser cladding pinch roll, which belongs to the technical field of laser cladding and comprises a roller, a roll shaft and two shaft end components. A laser cladding layer is arranged on the outer surface of the roller, and a plurality of external positioning openings are formed in the two ends of the roller correspondingly. An external connecting shaft section, a middle shaft section and an internal connecting shaft section are arranged at the two ends of the roller shaft respectively, and a positioning key is arranged on the outer wall of the internal connecting shaft section; the shaft end assembly comprises an inner shaft ring and an outer shaft ring, the inner shaft ring and the outer shaft ring are detachably connected through a plurality of connecting pieces, an inner positioning groove is formed in the inner shaft ring, and a plurality of outer positioning blocks are arranged on the periphery of the outer shaft ring. When the laser cladding layer on the outer surface of the roller cannot be normally used due to collision or abrasion, the roller can be independently replaced, the detached roller shaft and the two shaft end assemblies can continue to be matched with a newly-replaced roller for use, and the problems of waste and high cost caused by overall scrapping of the pinch roller are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cladding, and more specifically relates to a laser cladding pinch roller. Background Art

[0002] Laser cladding technology has shown its unique advantages in industrial applications, especially in improving material properties and extending equipment life. As an important component in many industrial processes, the pinch roller is often used in a very harsh environment and needs to withstand high pressure, high speed and material wear. By adding a layer of cladding with high hardness and high wear resistance to the surface of the pinch roller, its working performance can be significantly improved.

[0003] Although the pinch rollers that have been laser clad can meet the use requirements in terms of hardness and wear resistance, when used in harsh working conditions, the laser cladding layer on the outer surface of the roller often cannot be used normally due to bumps or wear. At this time, the pinch rollers need to be scrapped as a whole, causing waste and increasing costs. Utility Model Content

[0004] The utility model aims to provide a laser cladding pinch roller, aiming to solve the problem of waste and increased cost caused by scrapping the pinch roller as a whole when the laser cladding layer on the outer surface of the roller cannot be used normally due to collision or wear.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a laser cladding pinch roller, comprising:

[0006] A roller, wherein the outer surface of the roller is provided with a laser cladding layer, and both ends of the roller are respectively provided with a plurality of external positioning openings in a circumferential direction;

[0007] A roller shaft, wherein the roller shaft axially penetrates the inner cavity of the roller drum, and two ends of the roller shaft are respectively provided with connecting end structures, wherein the connecting end structure comprises an outer connecting shaft section, a middle shaft section and an inner connecting shaft section arranged in sequence from the outside to the inside, wherein the outer diameters of the outer connecting shaft section, the middle shaft section and the inner connecting shaft section increase in sequence, and a positioning key is arranged on the outer wall of the inner connecting shaft section;

[0008] Two shaft end assemblies, the two shaft end assemblies are respectively arranged at both ends of the roller shaft, the shaft end assemblies include an inner shaft ring and an outer shaft ring arranged in sequence from the inside to the outside, the inner shaft ring and the outer shaft ring are detachably connected through multiple circumferential connecting parts, the inner wall of the inner shaft ring is provided with an internal positioning groove, the inner shaft ring is sleeved on the middle shaft section, the internal positioning groove is engaged with the positioning key, the outer shaft ring is sleeved on the middle shaft section, and the outer periphery of the outer shaft ring is provided with multiple external positioning blocks, and the multiple external positioning blocks are correspondingly engaged in the multiple external positioning openings.

[0009] In a possible implementation, a first positioning groove and a second positioning groove are respectively provided inside the two ends of the roller from the outside to the inside, the outer diameter of the first positioning groove is larger than the outer diameter of the second positioning groove, a plurality of external positioning openings are opened on the outer periphery of the first positioning groove, the external shaft ring abuts against the bottom of the first positioning groove, and the internal shaft ring abuts against the bottom of the second positioning groove.

[0010] In a possible implementation, the connecting member is a connecting bolt, and the outer shaft ring and the inner shaft ring are coaxially arranged and detachably connected in the circumferential direction via a plurality of the connecting bolts.

[0011] In a possible implementation, a plurality of first connecting holes are circumferentially opened on the end surface of the outer shaft ring, and a plurality of second connecting holes are circumferentially opened on the end surface of the inner shaft ring, the plurality of first connecting holes correspond one-to-one to the plurality of second connecting holes, and the connecting bolts penetrate the second connecting holes and the first connecting holes in sequence from the inside to the outside and are fixed by nuts.

[0012] In a possible implementation, a first annular groove is coaxially opened on the outer end surface of the outer shaft ring, and the plurality of first connecting holes are located in the first annular groove; a second annular groove is coaxially opened on the inner end surface of the inner shaft ring, and the plurality of second connecting holes are located in the second annular groove.

[0013] In a possible implementation, the inner end surface of the outer shaft ring is provided with a boss, and the outer end surface of the inner shaft ring is provided with a slot axially plugged with the boss.

[0014] In a possible implementation, an outer end surface of the outer collar protrudes beyond the end of the roller.

[0015] In a possible implementation manner, the outer end of the middle shaft segment protrudes beyond the outer end surface of the outer shaft ring.

[0016] In a possible implementation, a positioning shoulder is formed between the middle shaft segment and the internal connecting shaft segment, and the inner end surface of the internal shaft ring abuts against the end surface of the positioning shoulder.

[0017] In a possible implementation manner, an external connection key is provided on an outer wall of the external connection shaft segment.

[0018] The beneficial effect of the laser cladding pinch roller provided by the utility model is that compared with the prior art, when installing the pinch roller, the inner shaft ring and the outer shaft ring at one end of the roller shaft are first sleeved on the roller shaft in sequence, and the inner positioning groove of the inner shaft ring is clamped with the positioning key of the middle shaft section on the roller shaft. The inner shaft ring and the outer shaft ring are connected by a connecting piece, and the roller shaft passes through the roller from the end where the outer shaft ring and the inner shaft ring are not installed, and the multiple external positioning blocks of the outer shaft ring are clamped in the multiple external positioning ports at one end of the roller. Then the inner shaft ring and the outer shaft ring at the other end of the roller shaft are installed, and the inner shaft ring and the outer shaft ring are first connected by a connecting piece, and then the inner shaft ring and the outer shaft ring are simultaneously sleeved on the other end of the roller shaft, and the inner positioning groove of the inner shaft ring is clamped with the positioning key of the middle shaft section on the roller shaft, and the multiple external positioning blocks of the outer shaft ring are clamped in the multiple external positioning ports at the other end of the roller, and finally the connecting pieces on both sides are reinforced to ensure the stability of the connection between the roller shaft and the roller. When disassembling the pinch roller, the operation can be reversed relative to the installation process, which will not be repeated here. When the laser cladding layer on the outer surface of the roller cannot be used normally due to bumps or wear, the roller can be replaced separately, and the removed roller shaft and two shaft end components can continue to be used with the newly replaced roller, avoiding the waste and high cost caused by the overall scrapping of the pinch roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of the laser cladding pinch roller provided in an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the structure of a roller provided in an embodiment of the utility model;

[0022] Figure 3 A side view of a roller provided in an embodiment of the utility model;

[0023] Figure 4 An outer end view of an outer collar provided for an embodiment of the utility model;

[0024] Figure 5 An inner end view of an inner collar provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Roller; 2. Laser cladding layer; 3. External positioning port; 4. Roller shaft; 5. External connecting shaft section; 6. Middle shaft section; 7. Internal connecting shaft section; 8. Positioning key; 9. Internal shaft ring; 10. External shaft ring; 11. Internal positioning groove; 12. External positioning block; 13. First positioning groove; 14. Second positioning groove; 15. Connecting bolt; 16. First connecting hole; 17. Second connecting hole; 18. Nut; 19. First annular groove; 20. Second annular groove; 21. Positioning shoulder; 22. External connecting key. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0029] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0030] See also Figures 1 to 5 The laser cladding pinch roller provided by the utility model is now described. The laser cladding pinch roller comprises a roller 1, a roller shaft 4 and two shaft end components.

[0031] The outer surface of the roller 1 is provided with a laser cladding layer 2, and a plurality of external positioning openings 3 are respectively opened in the circumferential direction at both ends of the roller 1; the roller shaft 4 axially penetrates the inner cavity of the roller 1, and the two ends of the roller shaft 4 are respectively provided with a connecting end structure, which includes an external connecting shaft section 5, a middle shaft section 6 and an internal connecting shaft section 7 arranged in sequence from the outside to the inside, and the outer diameters of the external connecting shaft section 5, the middle shaft section 6 and the internal connecting shaft section 7 increase in sequence, and a positioning key 8 is arranged on the outer wall of the internal connecting shaft section 7; two shaft end assemblies are respectively arranged on the two ends of the roller shaft 4 The shaft end assembly includes an inner shaft ring 9 and an outer shaft ring 10 which are arranged in sequence from the inside to the outside. The inner shaft ring 9 and the outer shaft ring 10 are detachably connected through multiple circumferential connecting parts. The inner wall of the inner shaft ring 9 is provided with an internal positioning groove 11. The inner shaft ring 9 is sleeved on the middle shaft section 6. The internal positioning groove 11 is snap-fitted with the positioning key 8. The outer shaft ring 10 is sleeved on the middle shaft section 6. A plurality of external positioning blocks 12 are arranged on the outer periphery of the external shaft ring 10. The plurality of external positioning blocks 12 are snap-fitted into the plurality of external positioning openings 3 one by one.

[0032] Compared with the prior art, the laser cladding pinch roller provided by the utility model has the following advantages: when installing the pinch roller, the inner collar 9 and the outer collar 10 at one end of the roller shaft 4 are first sleeved on the roller shaft 4 in sequence, and the inner positioning groove 11 of the inner collar 9 is engaged with the positioning key 8 of the middle shaft section 6 on the roller shaft 4. The inner collar 9 and the outer collar 10 are connected by a connecting piece, and the roller shaft 4 passes through the roller 1 from the end where the outer collar 10 and the inner collar 9 are not installed, and the multiple external positioning blocks 12 of the external collar 10 are engaged in the multiple external positioning openings 3 at one end of the roller 1. Then install the inner collar 9 and the outer collar 10 at the other end of the roller shaft 4. First, use the connecting piece to connect the inner collar 9 and the outer collar 10, and then simultaneously sleeve the inner collar 9 and the outer collar 10 on the other end of the roller shaft 4. The inner positioning groove 11 of the inner collar 9 is engaged with the positioning key 8 of the middle shaft section 6 on the roller shaft 4, and the multiple external positioning blocks 12 of the external collar 10 are engaged with the multiple external positioning ports 3 at the other end of the roller 1. Finally, the connecting pieces on both sides are reinforced to ensure the stability of the connection between the roller shaft 4 and the roller 1. When disassembling the pinch roller, the installation process can be reversed, which will not be repeated here. When the laser cladding layer 2 on the outer surface of the roller 1 cannot be used normally due to bumps or wear, the roller 1 can be replaced separately, and the removed roller shaft 4 and the two shaft end components can continue to be used in conjunction with the newly replaced roller 1, avoiding the waste and high cost caused by the overall scrapping of the pinch roller.

[0033] See also Figure 1 and Figure 3The first and second positioning grooves 13 and 14 are respectively provided inside the two ends of the roller 1 from the outside to the inside. The outer diameter of the first positioning groove 13 is larger than the outer diameter of the second positioning groove 14. A plurality of external positioning openings 3 are opened on the outer periphery of the first positioning groove 13. The internal shaft ring 9 is axially inserted into the second positioning groove 14 and the internal shaft ring 9 abuts against the bottom of the second positioning groove 14 to ensure the stability of the installation of the internal shaft ring 9. The external shaft ring 10 abuts against the bottom of the first positioning groove 13. The external shaft ring 10 is axially inserted into the first positioning groove 13 and the internal shaft ring 9 abuts against the bottom of the first positioning groove 13 and the outer end face of the internal shaft ring 9, which can ensure the stability of the installation of the external shaft ring 10 and the internal shaft ring 9 at the same time.

[0034] See also Figure 1 The connecting member is a connecting bolt 15. The outer shaft ring 10 and the inner shaft ring 9 are coaxially arranged and detachably connected circumferentially by multiple connecting bolts 15 to prevent the outer shaft ring 10 and the inner shaft ring 9 from relative circumferential rotation and ensure that the two rotate synchronously.

[0035] See also Figure 1 , Figure 4 and Figure 5 A plurality of first connecting holes 16 are circumferentially opened on the end surface of the external shaft ring 10, and a plurality of second connecting holes 17 are circumferentially opened on the end surface of the internal shaft ring 9. The plurality of first connecting holes 16 and the plurality of second connecting holes 17 are the same in number and are coaxially corresponding one to one. The connecting bolts 15 penetrate the second connecting holes 17 and the first connecting holes 16 from the inside to the outside in sequence and are fixed by nuts 18, thereby stably connecting the external shaft ring 10 and the external shaft ring 10 together to prevent the two from circumferential relative rotation.

[0036] See also Figure 4 and Figure 5 A first annular groove 19 is coaxially formed on the outer end face of the external shaft ring 10, and a plurality of first connecting holes 16 are located in the first annular groove 19. The first annular groove 19 is larger than the thickness of the nut 18, ensuring that the nut 18 does not protrude from the outer end face of the external shaft ring 10; a second annular groove 20 is coaxially formed on the inner end face of the internal shaft ring 9, and a plurality of second connecting holes 17 are located in the second annular groove 20. The second annular groove 20 is larger than the thickness of the nut end of the connecting bolt 15, ensuring that the nut end does not protrude from the inner end face of the internal shaft ring 9.

[0037] See also Figure 1 The inner end face of the outer shaft ring 10 is provided with a boss, and the outer end face of the inner shaft ring 9 is provided with a slot axially plugged in with the boss. The boss and the slot are axially plugged in, which can ensure that the two are always in a coaxial state, so as to facilitate synchronous installation in the roller 1.

[0038] Preferably, the outer end surface of the external shaft ring 10 protrudes from the end of the roller 1 , so as to facilitate the installation or removal of the external shaft ring 10 at the end of the roller 1 .

[0039] Preferably, the outer end of the middle shaft section 6 protrudes from the outer end surface of the external shaft ring 10. When the external shaft ring 10 and the internal shaft ring 9 are both sleeved on the middle shaft section 6, more space can be reserved for the roller 4 on the outside of the external shaft ring 10, which facilitates the lifting and installation of the roller 4.

[0040] Also, see Figure 1 and Figure 2 A positioning shoulder 21 is formed between the middle shaft section 6 and the internal connecting shaft section 7. The inner end face of the internal shaft ring 9 abuts against the end face of the positioning shoulder 21. The positioning shoulder 21 and the bottom of the second positioning groove 14 are in the same plane. The internal shaft ring 9 is positioned and installed in the roller 1 through the positioning shoulder 21 and the second positioning groove 14 at the same time. While ensuring the installation position of the internal shaft ring 9, the axial direction of the roller shaft 4 can also be positioned.

[0041] In addition, an external connection key 22 is provided on the outer wall of the external connection shaft section 5 to facilitate the connection of the roller shaft 4 to external transmission components.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Laser cladding pinch roller, characterized in that: include: A roller (1), wherein the outer surface of the roller (1) is provided with a laser cladding layer (2), and both ends of the roller (1) are respectively provided with a plurality of external positioning openings (3) in a circumferential direction; A roller shaft (4), the roller shaft (4) axially passes through the inner cavity of the roller drum (1), and connecting end structures are respectively provided at both ends of the roller shaft (4), and the connecting end structure comprises an external connecting shaft section (5), a middle shaft section (6) and an internal connecting shaft section (7) arranged in sequence from the outside to the inside, and the outer diameters of the external connecting shaft section (5), the middle shaft section (6) and the internal connecting shaft section (7) increase in sequence, and a positioning key (8) is provided on the outer wall of the internal connecting shaft section (7); Two shaft end assemblies, the two shaft end assemblies are respectively arranged at the two ends of the roller shaft (4), the shaft end assemblies include an inner shaft ring (9) and an outer shaft ring (10) arranged in sequence from the inside to the outside, the inner shaft ring (9) and the outer shaft ring (10) are detachably connected through a plurality of circumferential connecting pieces, the inner wall of the inner shaft ring (9) is provided with an inner positioning groove (11), the inner shaft ring (9) is sleeved on the middle shaft section (6), the inner positioning groove (11) is snap-fitted with the positioning key (8), the outer shaft ring (10) is sleeved on the middle shaft section (6), the outer periphery of the outer shaft ring (10) is provided with a plurality of external positioning blocks (12), and the plurality of external positioning blocks (12) are snap-fitted in the plurality of external positioning openings (3) one by one.

2. The laser cladding pinch roller according to claim 1, characterized in that: A first positioning groove (13) and a second positioning groove (14) are respectively arranged inside the two ends of the roller (1) from the outside to the inside, the outer diameter of the first positioning groove (13) is larger than the outer diameter of the second positioning groove (14), a plurality of external positioning openings (3) are opened on the outer periphery of the first positioning groove (13), the external shaft ring (10) abuts against the bottom of the first positioning groove (13), and the internal shaft ring (9) abuts against the bottom of the second positioning groove (14).

3. The laser cladding pinch roller according to claim 1, characterized in that: The connecting member is a connecting bolt (15); the outer shaft ring (10) and the inner shaft ring (9) are coaxially arranged and detachably connected in the circumferential direction via a plurality of the connecting bolts (15).

4. The laser cladding pinch roller according to claim 3, characterized in that: The end surface of the outer shaft ring (10) is provided with a plurality of first connection holes (16) in the circumferential direction, and the end surface of the inner shaft ring (9) is provided with a plurality of second connection holes (17) in the circumferential direction. The plurality of first connection holes (16) correspond to the plurality of second connection holes (17) in a one-to-one manner, and the connection bolts (15) penetrate the second connection holes (17) and the first connection holes (16) in sequence from the inside to the outside and are fixed by nuts (18).

5. The laser cladding pinch roller according to claim 4, characterized in that: The outer end surface of the outer shaft ring (10) is coaxially provided with a first annular recessed groove (19), and a plurality of the first connecting holes (16) are located in the first annular recessed groove (19); the inner end surface of the inner shaft ring (9) is coaxially provided with a second annular recessed groove (20), and a plurality of the second connecting holes (17) are located in the second annular recessed groove (20).

6. The laser cladding pinch roller according to claim 1, characterized in that: The inner end surface of the outer shaft ring (10) is provided with a boss, and the outer end surface of the inner shaft ring (9) is provided with a slot axially plugged into and mating with the boss.

7. The laser cladding pinch roller according to claim 1, characterized in that: The outer end surface of the outer collar (10) protrudes from the end of the roller (1).

8. The laser cladding pinch roller according to claim 1, characterized in that: The outer end of the middle shaft section (6) protrudes from the outer end surface of the outer shaft ring (10).

9. The laser cladding pinch roller according to claim 1, characterized in that: A positioning shoulder (21) is formed between the middle shaft section (6) and the internal connecting shaft section (7), and the inner end surface of the internal shaft ring (9) abuts against the end surface of the positioning shoulder (21).

10. The laser cladding pinch roller according to claim 1, characterized in that: An external connection key (22) is provided on the outer wall of the external connection shaft section (5).

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