Lifting material guiding system for papermaking felt bottom net
By adopting a lifting guide system in the welding equipment of paper-making blanket bottom mesh, the problem of insufficient cutting space in the equipment and the wrinkles easily generated by paper-making blanket bottom mesh is solved, and efficient welding and convenient cutting are achieved.
Patent Information
- Application Number
- CN202422090072.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the existing ring paper-making blanket bottom mesh welding equipment, the fixing of the support frame leads to insufficient cutting space, and the paper-making blanket bottom mesh is prone to wrinkles during the welding process, affecting the welding effect.
The lifting guide system is adopted, including a lifting rack, clamping rod-pulling assembly and ultrasonic welding head. Through the lifting rack and clamping of the clamping rod-pulling assembly, the paper-making blanket bottom mesh does not produce wrinkles before welding, and the lifting rack is raised after welding is completed to leave cutting space.
It effectively avoids wrinkles during the welding process of paper-making blanket bottom mesh, improves the welding effect, and provides sufficient cutting space through the rise of the lifting rack, simplifying manual operation.
Smart Images
Figure CN223045196U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of papermaking felt production, and particularly relates to a lifting and feeding system for the bottom net of a papermaking felt. Background Art
[0002] In the production of papermaking felt, first, one or more layers of fiber materials are evenly laid on the bottom net. These fibers can be natural fibers (such as cotton, linen) or synthetic fibers (such as polyester, nylon); then, a needle plate with barbs is used to pass the fibers through the bottom net by high-speed reciprocating motion. The barbs can catch the fibers and bring them into the bottom net, so that the fibers are fixed in position on the bottom net; through multiple needling, the fiber layer is further reinforced and fixed on the bottom net to form a felt structure with certain strength and stability; the design and structure of the bottom net of the papermaking felt have an important impact on the performance of the papermaking felt, including dimensional stability, compression resilience, water filtration performance, and service life, etc.
[0003] Papermaking felt is an essential dewatering device in the production process of a paper machine, which plays the roles of transferring wet paper sheets, leveling the surface of paper sheets, and dewatering. When applied in a paper machine, the papermaking felt is usually annular and sleeved on the corresponding roller of the paper machine. Correspondingly, the bottom net of the papermaking felt is also an annular structure. The annular bottom net usually has at least two layers. During processing, a special welding device is used, that is, the upper layer of the bottom net is wound into a ring, and then the head and tail ends of this layer of the bottom net are welded by ultrasonic waves. The lower layer of the bottom net is wound around the upper layer of the bottom net and forms a ring, and finally the head and tail are welded.
[0004] Currently, the existing welding equipment for the annular bottom net of a papermaking felt usually includes a machine base, two rollers, a support frame, an ultrasonic welding head, and a pay-off roller. The two rollers are arranged in parallel at intervals on the machine base. The pay-off roller is used to pay off the bottom net of the papermaking felt. The support frame is fixed on the machine base and is located between the two rollers and the pay-off roller. The ultrasonic welding head is arranged on the support frame in a liftable manner. During operation, the pay-off roller pays off the bottom net of the papermaking felt. One end of the bottom net of the papermaking felt passes through the bottom of the support frame and is wound around the two rollers, so that the bottom net of the papermaking felt is wound into a ring on the two rollers, and the two ends of the papermaking felt wound into a ring are overlapped. Subsequently, the ultrasonic welding head welds the overlapped part. After welding is completed, it is necessary to manually hold a cutting tool to cut the bottom net of the papermaking felt to obtain the welded annular bottom net of the papermaking felt.
[0005] However, since the support frame is fixed, after welding is completed, the space between the bottom of the support frame and the machine base is small, which is not conducive to manual cutting at the bottom of the support frame. Moreover, when the ultrasonic welding head welds the bottom net of the papermaking felt, the bottom net of the papermaking felt is prone to wrinkles, affecting the welding effect. Summary of the Utility Model
[0006] To solve the problems that since the support frame is fixed, after welding is completed, the space between the bottom of the support frame and the machine base is small, which is not conducive to manual cutting at the bottom of the support frame, and when the base web of the papermaking felt is wound into a ring on the two rollers, wrinkles are likely to occur on the base web of the papermaking felt, affecting the welding effect of the ultrasonic welding head on the base web of the papermaking felt, the present utility model provides a lifting and guiding system for papermaking felt.
[0007] The lifting and guiding system for the base web of papermaking felt provided by the present utility model adopts the following technical solutions:
[0008] A lifting and guiding system for the base web of papermaking felt, comprising a machine base, two support frames, a lifting frame, a first roller, a pinch roll stretching assembly, a driving device and an ultrasonic welding head. The two support frames are horizontally and spaced apart on the machine base, the support frames extend vertically, and the two ends of the lifting frame are respectively and vertically and liftably arranged on the two support frames. The driving device is arranged on the support frame and is used to drive the lifting of the lifting frame; the first roller is arranged on the lifting frame, and the opposite ends of the first roller are respectively and rotatably connected to the opposite ends of the lifting frame; the ultrasonic welding head is arranged on the lifting frame and is used to weld the base web of the papermaking felt; the pinch roll stretching assembly is arranged between the ultrasonic welding head and the first roller, and the pinch roll stretching assembly comprises a pinch roll assembly, a first driving structure and a connecting frame. The connecting frame is arranged on the lifting frame, the pinch roll assembly is slidably arranged on the connecting frame, the pinch roll assembly is used to roll and clamp the opposite surfaces of the base web of the papermaking felt, and the first driving structure is arranged on the connecting frame and is used to drive the pinch roll assembly to slide along the axial direction of the first roller.
[0009] Further, the pinch roll assembly comprises a sliding seat, a through groove is formed in the sliding seat and penetrates through the opposite sides of the sliding seat along the axial direction of the first roller, roller groups are arranged on the opposite inner walls of the through groove, the roller groups comprise upper rollers and lower rollers which are vertically spaced apart, the rotation axes of the upper rollers and the lower rollers are both perpendicular to the first roller, the upper rollers and the lower rollers clamp the connecting frame, and the upper rollers and the lower rollers can roll along the connecting frame.
[0010] Further, the pinch roll assembly further comprises a fixed roll, an adjusting roll, a second driving structure and a mounting plate. The fixed roll and the adjusting roll are rotatably arranged on the mounting plate, the fixed roll and the adjusting roll are both parallel to the first roller, the adjusting roll and the fixed roll are spaced apart on the mounting plate, the second driving structure is arranged on the mounting plate, and the second driving structure is used to drive the adjusting roll to adjust the distance between the fixed roll and the adjusting roll.
[0011] Furthermore, it also includes a second roller, which is arranged on the lifting frame, and the second roller is located between the ultrasonic welding head and the clamping roller spoke pulling assembly, and the opposite ends of the second roller are rotatably connected to the opposite ends of the lifting frame respectively.
[0012] Furthermore, a tension detection element is provided on the first roller, and the tension detection element is used to detect the tension of the bottom wire of the papermaking felt passing around the first roller.
[0013] Furthermore, the lifting frame is also provided with a first driving unit, a fixed plate, a rack and two slide rails, the rack is arranged on the lifting frame, the rack is located on the side of the second roller facing away from the first roller, the rack is parallel to the second roller, the opposite ends of the rack extend to the opposite ends of the lifting frame, the two slide rails are parallel to the rack, the two guide rails are spaced apart in the vertical direction, the rack is located between the two slide rails, the fixed plate is slidably arranged on the two slide rails, the ultrasonic welding head is arranged on the fixed plate, the first driving unit is arranged on the fixed plate, the output end of the first driving unit is meshed with the rack for transmission, and the first driving unit is used to drive the fixed plate to move along the slide rail.
[0014] Furthermore, the ultrasonic horn is arranged on a fixed plate for vertical sliding, and a driving component is also arranged on the fixed plate, and the driving component is used for the ultrasonic horn to slide vertically.
[0015] Furthermore, the support frame includes two columns, which extend in a vertical direction, and the two columns of each support frame are spaced apart in a direction perpendicular to the first roller. A guide groove is provided on the side of the column facing away from the lifting frame, and the guide groove extends along the extension direction of the column. One end of the lifting frame is slidably connected to the guide grooves of the two columns of one support frame through a first connecting member, and the other end of the lifting frame is slidably connected to the guide grooves of the two columns of another support frame through a second connecting member; the driving device includes a first driving mechanism and a second driving mechanism, which are respectively arranged on the two support frames, and the first driving mechanism and the second driving mechanism are respectively drivingly connected to the first connecting member and the second connecting member, and the first driving mechanism and the second driving mechanism synchronously drive the first connecting member and the second connecting member to drive the lifting frame to rise and fall.
[0016] Further, a first guide wheel is provided between the two columns of the support frame. The two columns of the support frame are respectively set as a first column and a second column. The side wall of the first column facing the second column is set as a first side wall, and the side wall of the second column facing the first column is set as a second side wall. The first guide wheels are rotatably provided on both the first side wall and the second side wall. The rotation axis of the first guide wheel is perpendicular to the extension direction of the guide groove, and the rolling surface of the first guide wheel is in rolling contact with the lifting frame.
[0017] Further, second guide wheels are rotatably provided on both sides of the opposite ends of the lifting frame. The rotation axis of the second guide wheel is perpendicular to the extension direction of the guide groove. The surface of the second column facing away from the first column is set as a third side wall, and the surface of the first column facing away from the second column is set as a fourth side wall. The third side wall and the fourth side wall are respectively in rolling contact with the rolling surfaces of the second guide wheels.
[0018] Advantages of the present utility model: When the lifting and guiding system for the bottom net of the paper-making felt of the present utility model is in use, one end of the bottom net of the paper-making felt on the lifting frame sequentially bypasses the upper surface of the first roller, passes through the pinch roller stretching assembly, and is clamped by the pinch roller stretching assembly in a rolling manner. Driven by the first driving structure, the pinch roller stretching assembly rolls and clamps the bottom net of the paper-making felt, so that the bottom net of the paper-making felt will not wrinkle in its width direction. At the same time, after the bottom net of the paper-making felt is wound into a ring, the driving device drives the lifting frame to descend, so that the head and tail ends of the ring-shaped bottom net of the paper-making felt are overlapped together. The ultrasonic welding head on the lifting frame welds the overlapping part. After the welding is completed, the lifting frame starts to rise, leaving a space at the bottom of the lifting frame to facilitate the next manual operation of cutting. Description of the Drawings
[0019] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features and advantages of the exemplary embodiments of the present utility model will become easily understandable. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0020] Figure 1 is a three-dimensional view of a lifting and guiding system for the bottom net of a paper-making felt of the present utility model;
[0021] Figure 2 is Figure 1 an enlarged structural schematic diagram of part A in
[0022] Figure 3 is a three-dimensional view of a lifting and guiding system for the bottom net of a paper-making felt of the present utility model;
[0023] Figure 4 is Figure 3Schematic diagram of the enlarged structure at position B;
[0024] Figure 5 Front view of a lifting and guiding system for the bottom net of a paper-making felt according to the present utility model;
[0025] Figure 6 is Figure 5 Cross-sectional view taken along the A-A direction in ;
[0026] Figure 7 Side view of a lifting and guiding system for the bottom net of a paper-making felt according to the present utility model;
[0027] Figure 8 Stereogram of a pinch roll stretching assembly according to an embodiment of the present utility model;
[0028] Figure 9 is Figure 8 Schematic diagram of the enlarged structure at position C in.
[0029] Explanation of reference numerals:
[0030] 1, machine base; 2, support frame; 3, lifting frame; 4, first roller; 5, pinch roll stretching assembly; 6, driving device; 7, ultrasonic welding head; 8, pinch roll assembly; 9, first driving structure; 10, connecting frame; 11, first driving motor; 12, first reducer; 13, first lead screw; 14, sliding seat; 15, through groove; 16, upper roller; 17, lower roller; 18, fixed frame; 19, connecting plate; 20, fixed roller; 21, adjusting roller; 22, mounting plate; 23, second driving structure; 24, sliding cavity; 25, second roller; 26, tension sensor; 27, second driving motor; 28, fixing plate; 29, rack; 30, slide rail; 31, driving assembly; 32, third driving motor; 33, second lead screw; 34, mounting block; 35, mounting seat; 36, track; 37, guide groove; 38, first connecting piece; 39, second connecting piece; 40, first driving mechanism; 41, second driving mechanism; 42, first guide wheel; 43, first column; 44, second column; 45, first side wall; 46, second side wall; 47, second guide wheel; 48, third side wall; 49, fourth side wall; 50, bottom net of paper-making felt. Detailed implementation manners
[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.
[0032] The following specifically introduces various non - restrictive embodiments of the present utility model. Any number of elements in the drawings is for illustration rather than limitation, and any naming is only for distinction without any limiting meaning.
[0033] The following refers to several representative embodiments of the present utility model to elaborate in detail the principles and spirit of the present utility model.
[0034] Refer to Figure 1 、 Figure 6 A lifting and guiding system for the bottom net 50 of a paper - making felt, comprising a machine base 1, two support frames 2, a lifting frame 3, a first roller 4, a pinch - roll stretching assembly 5, a driving device 6, and an ultrasonic welding head 7.
[0035] Refer to Figure 1 、 Figure 6 The two support frames 2 are horizontally and spaced apart on the machine base 1 in the width direction of the machine base 1. The support frames 2 extend vertically, and the bottoms of the support frames 2 are fixed to the machine base 1 by screws. The two ends of the lifting frame 3 are respectively arranged on the two support frames 2 in a vertically liftable manner. The driving device 6 is arranged on the support frame 2, and the driving device 6 is used to drive the lifting frame 3 to lift and lower in the vertical direction. The first roller 4 is arranged on the lifting frame 3, and the opposite ends of the first roller 4 are respectively rotatably connected to the opposite ends of the lifting frame 3; A plurality of ultrasonic welding heads 7 are arranged on the lifting frame 3 at intervals in the width direction of the machine base 1 for welding the bottom net 50 of the paper - making felt; Two groups of pinch - roll stretching assemblies 5 are provided, and the two groups of pinch - roll stretching assemblies 5 are respectively arranged at the opposite ends of the lifting frame 3, and both groups of pinch - roll stretching assemblies 5 are located between the ultrasonic welding head 7 and the first roller 4.
[0036] Refer to Figure 1 、 Figure 8 、 Figure 9 Specifically, the pinch - roll stretching assembly 5 includes a pinch - roll assembly 8, a first driving structure 9, and a connecting frame 10. The connecting frame 10 is arranged on the lifting frame 3. The pinch - roll assembly 8 is slidably arranged on the connecting frame 10. The pinch - roll assembly 8 is used to roll - clamp the opposite surfaces of the bottom net 50 of the paper - making felt. The first driving structure 9 is arranged on the connecting frame 10 and is used to drive the pinch - roll assembly 8 to slide along the axial direction of the first roller 4. The first driving structure 9 includes a first driving motor 11, a first speed reducer 12, and a first lead screw 13. The first driving motor 11 and the first speed reducer 12 are fixed on the connecting frame 10. One end of the first lead screw is drivingly connected to the first driving motor 11, and the other end of the first lead screw is rotatably connected to the connecting frame 10, and the first lead screw extends along a direction parallel to the axial direction of the first roller 4, that is, the first lead screw is parallel to the first roller 4; In addition, the pinch - roll assembly 8 is threadedly connected to the first lead screw. Thus, the first driving motor 11 drives the first lead screw to rotate through the first speed reducer 12, and further drives the pinch - roll assembly 8 to slide along the axial direction of the first roller 4.
[0037] It can be seen from this that the two sets of pinch roller stretching components 5 on the two sets of pinch roller assemblies 8 respectively perform rolling clamping on the opposite surfaces of the opposite sides of the base net 50 of the paper-making felt. The two first drive structures 9 on the two sets of pinch roller stretching components 5 respectively drive the two sets of pinch roller assemblies 8 to slide, so that the base net 50 of the paper-making felt is stretched from the opposite sides without generating wrinkles, and the lifting frame 3 can be lifted and lowered, so that a space can be reserved at the bottom of the lifting frame 3, which is convenient for workers to cut the annular base net 50 of the paper-making felt.
[0038] Refer to Figure 1 、 Figure 8 、 Figure 9 The pinch roller assembly 8 includes a sliding seat 14, and the sliding seat 14 is threadedly connected to the first lead screw 13 through a lead screw nut; a through groove 15 is formed in the sliding seat 14 and penetrates through the opposite sides of the sliding seat 14 along the axial direction of the first roller 4, and roller groups are arranged on the opposite inner walls of the through groove 15. The roller group includes an upper roller 16 and a lower roller 17 that are arranged at intervals in the vertical direction. The rotation axes of the upper roller 16 and the lower roller 17 are both perpendicular to the first roller 4. The upper roller 16 and the lower roller 17 clamp the connecting frame 10, and the upper roller 16 and the lower roller 17 can roll along the connecting frame 10.
[0039] Refer to Figure 1 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 The connecting frame 10 includes a fixing frame 18 and a connecting plate 19. The fixing frame 18 is connected to the lifting frame 3 and is fixed to the lifting frame 3 by screws. The connecting plate 19 is fixedly connected to the fixing frame 18. The connecting plate 19 is parallel to the first roller 4. The connecting plate 19 is connected to the fixing frame 18, and the upper roller 16 and the lower roller 17 respectively clamp the upper and lower surfaces of the connecting plate 19. It can be seen from this that when the pinch roller assembly 8 slides along the axial direction of the first roller 4, the upper roller 16 and the lower roller 17 respectively roll along the upper and lower surfaces of the connecting plate 19, making the sliding of the pinch roller assembly 8 more stable.
[0040] Refer to Figure 1 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9, the clamping bar assembly 8 further includes a fixed roller 20, an adjusting roller 21, a second driving structure 23 and a mounting plate 22. The fixed roller 20 and the adjusting roller 21 are rotatably arranged on the mounting plate 22. Both the fixed roller 20 and the adjusting roller 21 are parallel to the first roller 4. The adjusting roller 21 and the fixed roller 20 are arranged at intervals on the mounting plate 22. A sliding cavity 24 is provided on the mounting plate 22. The extending direction of the sliding cavity 24 is perpendicular to the fixed roller 20. The adjusting roller 21 is slidably arranged in the sliding cavity 24. The second driving structure 23 is arranged on the mounting plate 22. The second driving structure 23 is a cylinder. The second driving structure 23 drives the adjusting roller 21 to slide along the sliding cavity 24, so as to adjust the distance between the fixed roller 20 and the adjusting roller 21. Thus, it can be seen that the side of the papermaking felt base net 50 can pass through the gap between the fixed roller 20 and the adjusting roller 21. By adjusting the size of the distance between the fixed roller 20 and the adjusting roller 21, the papermaking felt base net 50 with different thicknesses can be clamped.
[0041] Referring to Figures 1-6 , on the basis of the above structure, the lifting and feeding system for the papermaking felt base net 50 further includes a second roller 25. The second roller 25 is arranged on the lifting frame 3. The second roller 25 is located between the ultrasonic welding head 7 and the clamping bar stretching assembly 5. The second roller 25 is parallel to the first roller 4. The opposite ends of the second roller 25 are respectively rotatably connected to the opposite ends of the lifting frame 3. The second roller 25 is lower than the ultrasonic welding head 7. Thus, it can be seen that the papermaking felt base net 50 is first input by bypassing the upper surface of the first roller 4 and then output by passing under the lower surface of the second roller 25. When the lifting frame 3 descends and the ultrasonic welding head 7 welds the overlapping papermaking felt base nets 50, the lower surface of the second roller 25 can fully press down the papermaking felt base net 50, so that the overlapping papermaking felt base nets 50 at the welding part are overlapped more tightly.
[0042] Referring to Figures 1-6 , a tension detection element is arranged on the first roller 4. The tension detection element is a tension sensor 26. The tension sensor 26 is arranged at the opposite ends of the first roller 4. When the papermaking felt base net 50 is wound around the first roller 4, the tension sensor 26 detects the tension of the papermaking felt base net 50 wound around the first roller 4. Since the papermaking felt base net 50 enters the lifting frame 3 by winding around the upper surface of the first roller 4, the lifting frame 3 will pull the papermaking felt base net 50 when it rises and falls. Therefore, the tension sensor 26 can detect the tension of the papermaking felt base net 50 to control the appropriate lifting and lowering of the lifting frame 3 and avoid excessive pulling of the papermaking felt base net 50.
[0043] Referring to Figures 1-5, a first driving unit, a fixing plate 28, a rack 29 and two slide rails 30 are further arranged on the lifting frame 3. Among them, the rack 29 is fixed on the lifting frame 3 by screws. The rack 29 is located on the side of the second roller 25 facing away from the first roller 4. The rack 29 is parallel to the second roller 25. The opposite ends of the rack 29 extend to the opposite ends of the lifting frame 3. The two slide rails 30 are parallel to the rack 29. The opposite ends of the slide rails 30 extend to the opposite ends of the lifting frame 3. The two guide rails are arranged at intervals in the vertical direction. The rack 29 is located between the two slide rails 30. The fixing plate 28 is slidably arranged on the two slide rails 30. A plurality of fixing plates 28 are provided. The fixing plate 28 can slide along the extending direction of the slide rail 30 on the slide rail 30. The ultrasonic welding head 7 is arranged on the fixing plate 28. The second driving motor 27 is arranged on the fixing plate 28. The first driving unit is the second driving motor 27. The output end of the second driving motor 27 is in meshing transmission with the rack 29. The second driving motor 27 drives the fixing plate 28 to move along the extending direction of the slide rail 30. In this way, the two slide rails 30 can make the ultrasonic welding head 7 move along the extending direction of the rack 29 during welding through the fixing plate 28, improving the welding effect.
[0044] Referring to Figures 1-5 , the ultrasonic welding head 7 is slidably arranged on the fixing plate 28 in the vertical direction. A driving component 31 is further arranged on the fixing plate 28. The driving component 31 is used for the ultrasonic welding head 7 to slide in the vertical direction. The driving component 31 includes a third driving motor 32, a second lead screw 33, a mounting block 34 and a mounting seat 35. A track 36 is further arranged on the fixing plate 28. The track 36 extends vertically to the upper and lower ends of the fixing plate 28. The mounting block 34 is arranged at the upper end of the fixing plate 28. The third driving motor 32 is arranged on the mounting block 34. The mounting seat 35 is slidably arranged on the track 36. The second lead screw extends in the vertical direction. The opposite ends of the second lead screw are respectively connected to the motor and the mounting seat 35. The motor drives the mounting seat 35 to slide up and down along the track 36. The ultrasonic welding head 7 is arranged on the slide rail 30 of the fixing plate 28 through the mounting seat 35. The ultrasonic welding head 7 rises and falls with the mounting seat 35 sliding up and down on the fixing plate 28. Thus, the ultrasonic welding head 7 makes a large range of lifting driven by the lifting frame 3, and the ultrasonic welding head 7 makes a small range of lifting on the fixing plate 28, which can make the ultrasonic welding head 7 perform a small range of fine adjustment during the welding process to improve the welding effect.
[0045] Of course, in other embodiments, the driving component 31 can also adopt an electric push rod or a linear driving motor, which is not limited here.
[0046] Referring to Figures 1-5, the support frame 2 includes two columns that extend vertically. The two columns of each support frame 2 are spaced apart along a direction perpendicular to the first roller 4. The columns are fixed to the machine base 1 by screws. A guide groove 37 is formed on the side of the column facing away from the lifting frame 3, and the guide groove 37 extends along the extending direction of the column. One end of the lifting frame 3 is slidably connected to the guide grooves 37 of the two columns of a support frame 2 through a first connecting member 38, and the other end of the lifting frame 3 is slidably connected to the guide grooves 37 of the two columns of another support frame 2 through a second connecting member 39. Thus, it can be seen that the lifting frame 3 can be lifted along the guide groove 37.
[0047] Refer to Figures 1-7 , the driving device 6 includes a first driving mechanism 40 and a second driving mechanism 41. The first driving mechanism 40 and the second driving mechanism 41 are respectively arranged on the two support frames 2. The first driving mechanism 40 and the second driving mechanism 41 are respectively drivingly connected to the first connecting member 38 and the second connecting member 39. The first driving mechanism 40 and the second driving mechanism 41 can be selected as linear driving modules. Thus, the lifting frame 3 is lifted by sliding along the guide groove 37, ensuring the stability of the lifting.
[0048] Of course, in other embodiments, the structure for driving the lifting frame 3 can also adopt a motor screw mechanism, which is not limited here.
[0049] Refer to Figure 1 , Figure 3 , Figure 5 , Figure 7 , a plurality of first guide wheels 42 are arranged between the two columns of the support frame 2. The two columns of the support frame 2 are respectively set as a first column 43 and a second column 44. The side wall of the first column 43 facing the second column 44 is set as a first side wall 45, and the side wall of the second column 44 facing the first column 43 is set as a second side wall 46. A plurality of first guide wheels 42 are rotatably arranged on both the first side wall 45 and the second side wall 46. The rotation axis of the first guide wheels 42 is perpendicular to the extending direction of the guide groove 37. The plurality of first guide wheels 42 are arranged at intervals in the vertical direction, and the rolling surfaces of the plurality of first guide wheels 42 are in rolling contact with the lifting frame 3. Thus, it can be seen that by arranging a plurality of first guide wheels 42 on the column and the rolling surfaces of the first guide wheels 42 being in rolling contact with the lifting frame 3, it is ensured that the lifting frame 3 will not shift in the width direction of the machine base 1 during the lifting process, improving the stability of the lifting frame 3.
[0050] Refer to Figure 1 , Figure 3 , Figure 5 , Figure 7, on both sides of the opposite ends of the lifting frame 3, a plurality of second guide wheels 47 are rotatably arranged. The rotation axes of the plurality of second guide wheels 47 are perpendicular to the extension direction of the guide groove 37. The plurality of second guide wheels 47 are arranged at intervals in the vertical direction. The surface of the second column 44 facing away from the first column 43 is set as the third side wall 48, and the surface of the first column 43 facing away from the second column 44 is set as the fourth side wall 49. The third side wall 48 and the fourth side wall 49 are respectively in rolling contact with the rolling surfaces of the second guide wheels 47. It can be seen from this that by arranging a plurality of second guide wheels 47 at the end of the lifting frame 3, when the lifting frame 3 is lifted and lowered, the plurality of second guide wheels 47 are in rolling contact with the side walls of the column, ensuring that the lifting frame 3 will not shift in the front-back direction of the machine base 1 during the lifting process and improving the stability of the lifting frame 3.
[0051] In summary, the working principle of the present utility model is as follows:
[0052] When the lifting and feeding system for the bottom net 50 of the papermaking felt is in use, the end of the bottom net 50 of the papermaking felt entering the lifting frame 3 sequentially bypasses the upper surface of the first roller 4. The pinch roll stretching assembly 5 clamps the bottom net 50 of the papermaking felt on the lifting frame bypassing the first roller 4. The fixed roller 20 and the adjusting roller 21 roll and clamp the papermaking felt, so that the bottom net 50 of the papermaking felt is stretched under the rolling clamping of the fixed roller 20 and the adjusting roller 21 to ensure that no wrinkles occur in the width direction of the bottom net 50 of the papermaking felt. At the same time, after the bottom net 50 of the papermaking felt passes through the lifting frame 3 and is wound into a ring, the lifting frame 3 descends. As the lifting frame 3 descends, the lower surface of the first roller 4 presses against the bottom net 50 of the papermaking felt output by the pinch roll stretching assembly 5, so that the head and tail ends of the annular bottom net 50 of the papermaking felt are fully overlapped. The ultrasonic welding head on the lifting frame 3 starts to weld the overlap. After the annular bottom net 50 of the papermaking felt is welded, the lifting frame 3 starts to rise, thereby increasing the space at the bottom of the lifting frame 3. Workers cut the welded annular papermaking felt at the bottom of the lifting frame 3.
[0053] In addition, the two sets of pinch roll assemblies 8 respectively roll and clamp the opposite surfaces of the opposite sides of the bottom net 50 of the papermaking felt. And the first driving motor 11 drives the first lead screw to rotate through the first speed reducer 12. Then, the rotation of the lead screw drives the two sets of pinch roll assemblies 8 to slide along the axial direction of the first roller 4. Through the relative sliding of the two sets of pinch roll assemblies 8, the bottom net 50 of the papermaking felt with different widths can be roll-clamped.
Claims
1. A lifting and guiding system for a bottom wire of a papermaking felt, characterized in that: The invention comprises a machine base, two support frames, a lifting frame, a first roller, a clamping roller and a spoke pulling assembly, a driving device and an ultrasonic welding head, wherein the two support frames are arranged on the machine base at a horizontal interval, the support frames extend vertically, and the two ends of the lifting frame are respectively arranged on the two support frames vertically and can be lifted and lowered, and the driving device is arranged on the support frames to drive the lifting and lowering of the lifting frames; the first roller is arranged on the lifting frame, and the opposite ends of the first roller are respectively rotatably connected with the opposite ends of the lifting frame; the ultrasonic welding head is arranged on the lifting frame to weld the bottom net of the papermaking felt; the clamping roller and the spoke pulling assembly is arranged between the ultrasonic welding head and the first roller, and the clamping roller and the spoke pulling assembly comprises a clamping roller assembly, a first driving structure and a connecting frame, the connecting frame is arranged on the lifting frame, the clamping roller assembly is slidably arranged on the connecting frame, the clamping roller assembly is used to roll and clamp the relative surfaces of the bottom net of the papermaking felt, and the first driving structure is arranged on the connecting frame to drive the clamping roller assembly to slide along the axial direction of the first roller.
2. The lifting and guiding system for the bottom wire of papermaking felt according to claim 1, characterized in that: The clamping roller assembly includes a sliding seat, a through groove is formed on the sliding seat and passes through the opposite sides of the sliding seat along the axial direction of the first roller, and roller groups are arranged on the opposite inner walls of the through groove, and the roller group includes an upper roller and a lower roller arranged at a vertical interval, and the rotation axes of the upper roller and the lower roller are perpendicular to the first roller, and the upper roller and the lower roller clamp the connecting frame, and the upper roller and the lower roller can roll along the connecting frame.
3. The lifting and guiding system for the bottom wire of papermaking felt according to claim 1, characterized in that: The clamping roller assembly also includes a fixed roller, an adjusting roller, a second driving structure and a mounting plate. The fixed roller and the adjusting roller are rotatably arranged on the mounting plate. The fixed roller and the adjusting roller are both parallel to the first roller. The adjusting roller and the fixed roller are arranged on the mounting plate with a spacing. The second driving structure is arranged on the mounting plate. The second driving structure is used to drive the adjusting roller and adjust the spacing between the fixed roller and the adjusting roller.
4. The lifting and guiding system for the bottom wire of a papermaking felt according to claim 3, characterized in that: It also includes a second roller, which is arranged on the lifting frame, located between the ultrasonic welding head and the clamping roller spoke pulling assembly, and the opposite ends of the second roller are rotatably connected to the opposite ends of the lifting frame respectively.
5. The lifting and guiding system for the bottom wire of papermaking felt according to claim 1, characterized in that: The first roller is provided with a tension detection element, and the tension detection element is used to detect the tension of the bottom wire of the papermaking felt passing around the first roller.
6. The lifting and guiding system for the bottom wire of a papermaking felt according to claim 1, characterized in that: The lifting frame is also provided with a first driving unit, a fixed plate, a rack and two slide rails. The rack is arranged on the lifting frame, the rack is located on the side of the second roller facing away from the first roller, the rack is parallel to the second roller, the opposite ends of the rack extend to the opposite ends of the lifting frame, the two slide rails are parallel to the rack, the two slide rails are spaced apart in the vertical direction, the rack is located between the two slide rails, the fixed plate is slidably arranged on the two slide rails, the ultrasonic welding head is arranged on the fixed plate, the first driving unit is arranged on the fixed plate, the output end of the first driving unit is meshed with the rack for transmission, and the first driving unit is used to drive the fixed plate to move along the slide rail.
7. The lifting and guiding system for the bottom wire of a papermaking felt according to claim 6, characterized in that: The ultrasonic horn is arranged on a fixed plate for vertical sliding. A driving assembly is also arranged on the fixed plate, and the driving assembly is used for the ultrasonic horn to slide vertically.
8. The lifting and guiding system for the bottom wire of a papermaking felt according to claim 1, characterized in that: The support frame includes two columns, which extend in a vertical direction. The two columns of each support frame are spaced apart in a direction perpendicular to the first roller. A guide groove is provided on the side of the column facing away from the lifting frame, and the guide groove extends along the extension direction of the column. One end of the lifting frame is slidably connected to the guide grooves of the two columns of one support frame through a first connecting member, and the other end of the lifting frame is slidably connected to the guide grooves of the two columns of the other support frame through a second connecting member; the driving device includes a first driving mechanism and a second driving mechanism, which are respectively arranged on the two support frames, and the first driving mechanism and the second driving mechanism are respectively drivingly connected to the first connecting member and the second connecting member, and the first driving mechanism and the second driving mechanism are respectively drivingly connected to the first connecting member and the second connecting member.
9. The lifting and guiding system for the bottom wire of a papermaking felt according to claim 8, characterized in that: A first guide wheel is arranged between the two columns of the support frame, the two columns of the support frame are respectively set as the first column and the second column, the side wall of the first column facing the second column is set as the first side wall, and the side wall of the second column facing the first column is set as the second side wall, the first guide wheel is rotatably arranged on the first side wall and the second side wall, the rotation axis of the first guide wheel is perpendicular to the extension direction of the guide groove, and the rolling surface of the first guide wheel is in rolling contact with the lifting frame.
10. The lifting and guiding system for the bottom wire of a papermaking felt according to claim 9, characterized in that: Second guide wheels are rotatably arranged on both sides of opposite ends of the lifting frame, the rotation axis of the second guide wheel is perpendicular to the extension direction of the guide groove, the surface of the second column facing away from the first column is arranged as a third side wall, the surface of the first column facing away from the second column is arranged as a fourth side wall, and the third side wall and the fourth side wall are in rolling contact with the rolling surface of the second guide wheel respectively.