Papermaking felt bottom net welding machine

Abstract

The utility model belongs to the technical field of papermaking felt bottom net processing, and particularly relates to a papermaking felt bottom net welding machine which comprises a machine base, an unwinding assembly, a lifting welding assembly, a driven roller assembly and a driving roller assembly. The lifting welding assembly comprises a fixing frame, a lifting frame, an ultrasonic welding head and a tension roller, the lifting frame is arranged on the fixing frame, and the tension roller is arranged on the lifting frame, is provided with a tension sensor and can detect the tension of a papermaking felt bottom net; the driven roller assembly and the driving roller assembly are both arranged on the machine base, and a driving roller on the driving roller assembly is parallel to a driven roller on the driven roller assembly. During use, the papermaking felt bottom net sequentially bypasses the tension roller, the driven roller and the driving roller, so that the papermaking felt bottom net forms a ring shape, the papermaking felt bottom net tension unwinding roller is used for properly winding or unwinding and adjusting the tension of the papermaking felt bottom net, and finally, the ultrasonic welding head is used for welding the annular papermaking felt bottom net, so that the annular papermaking felt bottom net is produced.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking felt base net processing, and particularly relates to a papermaking felt base net welding machine. Background Art

[0002] In the production of papermaking felt, first, one or more layers of fiber materials are evenly laid on the base 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 base net by high-speed reciprocating motion. The barbs can catch the fibers and bring them into the base net, so that the fibers form fixed positions on the base net; through multiple needling, the fiber layer is further strengthened and fixed on the base net, forming a felt structure with certain strength and stability; the design and structure of the papermaking felt base net 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 dehydration equipment in the production process of a paper machine, which plays the roles of transferring wet paper sheets, leveling the surface of paper sheets, and dehydrating. When applied in a paper machine, the papermaking felt is usually annular and sleeved on the corresponding roller of the paper machine. Correspondingly, the base net of the papermaking felt is also an annular structure. The annular base net usually has at least two layers. During processing, a special welding device is used, that is, the upper layer of the base net is wound into a ring, and then the head and tail ends of this layer of the base net are welded by ultrasonic waves. The lower layer of the base net is wound on the upper layer of the base net and forms a ring, and finally the head and tail are welded.

[0004] Currently, when welding the annular papermaking felt base net, usually, the papermaking felt base net to be welded is manually sleeved on two parallel and spaced rollers, so that the papermaking felt base net sequentially bypasses the upper and lower surfaces of the two rollers to form a ring, and then the head and tail ends of the papermaking felt base net are overlapped manually. Finally, the papermaking felt base net with the overlapped head and tail ends is placed on a welding platform and welded by the ultrasonic welding head of an ultrasonic welding device. Thus, the welding of the first layer of the base net of the papermaking felt is completed. Subsequently, manually, the lower layer of the base net is wound on the two rollers and sleeved on the surface of the first layer of the base net to form the lower layer of the annular base net. Subsequently, the head and tail ends of the lower layer of the base net are welded by an ultrasonic welding head, and the two layers of the base net are welded together. Repeating this way, a multi-layer annular papermaking felt base net can be produced. However, manually winding the papermaking felt base net to be welded into a ring and then manually overlapping the head and tail ends of the papermaking felt base net will cause the tension of the papermaking felt base net to be welded to become slack, and it is impossible to ensure that the papermaking felt base net to be welded is welded under appropriate tension, which affects the welding effect of the papermaking felt base net. Summary of the Utility Model

[0005] In the production process of the existing annular papermaking felt bottom net, when manually winding the papermaking felt bottom net to be welded into a ring and then overlapping the head and tail ends of the papermaking felt bottom net manually, the tension of the papermaking felt bottom net to be welded will be relaxed, and it is impossible to ensure that the papermaking felt bottom net to be welded is welded under appropriate tension, which affects the welding effect of the papermaking felt bottom net. The present utility model provides a papermaking felt bottom net welding machine.

[0006] The papermaking felt bottom net welding machine provided by the present utility model adopts the following technical solutions:

[0007] A papermaking felt bottom net welding machine includes a machine base, a unwinding assembly, a lifting welding assembly, a passive roller assembly and a driving roller assembly. The unwinding assembly is used for unwinding or winding the coil material of the papermaking felt bottom net. The lifting welding assembly includes a fixed frame, a lifting frame, an ultrasonic welding head, a driver and a tension roller. The fixed frame is arranged on the machine base. The lifting frame is arranged on the fixed frame so as to be liftable in the vertical direction. The driver is arranged on the fixed frame and is used for driving the lifting frame to lift. The tension roller is arranged on the lifting frame. The tension roller is parallel to the unwinding assembly. A tension sensor is arranged on the tension roller and is used for detecting the tension of the papermaking felt bottom net bypassing the tension roller. The ultrasonic welding head is arranged on the lifting frame. The passive roller assembly includes a first connecting seat and a passive roller. The first connecting seat is arranged on the machine base. The passive roller is rotatably arranged on the first connecting seat. The driving roller assembly is located between the passive roller assembly and the lifting welding assembly. The driving roller assembly includes a mounting member, a second connecting seat and a driving roller. The second connecting seat is arranged on the machine base. The mounting member is arranged on the machine base. The opposite ends of the driving roller are respectively rotatably arranged on the second connecting seat and the mounting member. The driving roller is parallel to the passive roller.

[0008] Furthermore, the papermaking felt bottom net welding machine of the present utility model further includes a swing arm type electromagnetic clamping plate assembly. The swing arm type electromagnetic clamping plate assembly includes an electromagnetic clamping plate, a second driving unit and two swing plates. The electromagnetic clamping plate is used for clamping and fixing one end of the papermaking felt bottom net. One ends of the two swing plates are respectively connected to the opposite ends of the electromagnetic clamping plate. The other ends of the two swing plates are respectively rotatably sleeved on the opposite ends of the driving roller. The second driving unit is arranged on the second connecting seat and is used for driving the swing plates to swing around the driving roller.

[0009] Furthermore, the electromagnetic clamping plate includes a fixed beam, a clamping plate and an electromagnet. The opposite ends of the fixed beam are respectively connected to the two swing plates. The clamping plate is arranged on the upper surface of the fixed beam, and the clamping plate is hinged to the fixed beam. The electromagnet is fixed on the fixed beam. The electromagnet can generate a magnetic force to attract the clamping plate so that one end of the papermaking felt bottom net is clamped between the fixed beam and the clamping plate.

[0010] Furthermore, the papermaking felt base net welding machine of the present utility model further includes a moving guide rail, which is arranged on the machine base. The moving guide rail extends in the horizontal direction and is perpendicular to the driven roller. A driving device is arranged on the first connecting seat, and the driving device is used to drive the first connecting seat to move along the moving guide rail.

[0011] Furthermore, the second connecting seat includes a cantilever part and a fixing part. The opposite ends of the driving roller are respectively rotatably arranged on the cantilever part and the mounting part. The fixing part includes a cantilever beam main body, a first connecting beam and a second connecting beam. The cantilever beam main body is parallel to the driving roller. The first connecting beam extends in the vertical direction. The first end of the first connecting beam is connected to the cantilever beam main body, and the second end of the first connecting beam is connected to the fixing part. The second connecting beam is fixed on the machine base. The cantilever part is fixed at the end of the cantilever beam main body facing away from the first connecting beam. The projection of the cantilever part in the horizontal direction parallel to the driving roller is within the inner ring of the annular papermaking felt base net. The first connecting seat includes two mounting seats, and fixing grooves are arranged on the mounting seats. The opposite ends of the driven roller are respectively rotatably arranged in the two fixing grooves, and the opposite ends of the driven roller are respectively rotatably arranged on the two mounting seats. A notch is arranged on one side of the fixing groove facing the driving roller, and a sliding part is slidably connected to the notch, and the sliding part can slide outwards towards the side of the driving roller so that one end of the cantilever part facing the mounting seat can be inserted into the bottom of the fixing groove from the position of the notch to support the driven roller.

[0012] Furthermore, the papermaking felt base net welding machine of the present utility model further includes a support lifting device, which includes a support seat, a lifting power device and a lifting plate. The support seat is fixed on the machine base. The lifting plate is arranged on the lifting support seat in a liftable manner. The lifting power device is arranged on the support seat and is used to drive the lifting plate to lift in the vertical direction so that the lifting plate can rise to contact and support the cantilever part.

[0013] Furthermore, the papermaking felt base net welding machine of the present utility model further includes a nip roll stretching assembly, which includes a nip roll assembly, a first driving structure and a connecting frame. The connecting frame is arranged on the machine base. The nip roll assembly is slidably arranged on the connecting frame. The nip roll assembly is used to roll and clamp the opposite surfaces of the papermaking felt base net. The first driving structure is arranged on the connecting frame and is used to drive the nip roll assembly to slide along the connecting frame, and the sliding direction of the nip roll assembly is parallel to the driving roller.

[0014] Further, the pinch roller assembly includes a fixed roller, a moving roller, a second driving structure, and a mounting plate. The fixed roller and the moving roller are parallel to the driving roller. The moving roller and the fixed roller are arranged on the mounting plate at intervals. The second driving structure is arranged on the mounting plate and is used to drive the moving roller to shorten or increase the distance between the fixed roller and the moving roller.

[0015] Further, the unwinding assembly includes a driving unit, a fixed seat, an unwinding roller, and a track. The fixed seat is arranged on the machine base. The unwinding roller is arranged on the fixed seat. The fixed seat includes two support seats arranged at intervals. The track is parallel to the driving roller. At least one of the two support seats is slidably assembled on the track to adjust the distance between the two support seats. The opposite ends of the unwinding roller are rotatably arranged on the two support seats, and the unwinding roller is detachably connected to the support seats.

[0016] Further, the ultrasonic welding head is slidably arranged on the lifting frame, and the sliding direction of the ultrasonic welding head is parallel to the driving roller.

[0017] The beneficial effects of the present utility model are as follows: When the present utility model is in use, the unwinding assembly unwinds the papermaking felt bottom net of the reel. After unwinding, one end of the papermaking felt bottom net bypasses the upper surface of the tension roller of the lifting frame, then winds around to the upper surface of the passive roller, then from the upper surface of the passive roller to the lower surface of the passive roller, and from the lower surface of the passive roller to the lower surface of the driving roller, and finally winds back from the lower surface of the driving roller to the upper surface of the driving roller, and fixes one end of the papermaking felt bottom net on the upper surface of the driving roller. In this way, the step of winding the papermaking felt into a ring is completed. Subsequently, the driver is started to drive the lifting frame to descend, and the papermaking felt bottom net bypassing the upper surface of the tension roller also descends accordingly, so that the papermaking felt bottom net descends to overlap with the end of the papermaking felt bottom net fixed on the upper surface of the driving roller. The current tension of the papermaking felt bottom net is detected according to the tension sensor on the tension roller. According to the magnitude of the tension of the papermaking felt bottom net, the unwinding assembly performs unwinding or rewinding to adjust the tension of the papermaking felt bottom net until the tension of the papermaking felt bottom net is adjusted to an appropriate magnitude. The driver drives the lifting frame to drive the ultrasonic welding head to start welding the overlapping papermaking felt bottom nets to complete the welding of the first layer of the papermaking felt bottom net. Subsequently, the driving roller rotates, thereby driving the first layer of the papermaking felt bottom net to rotate with the driving roller and the passive roller. During the rotation process, the unwinding assembly continuously unwinds the bottom net, so that the unwound papermaking felt bottom net winds around the first layer of the papermaking felt bottom net and overlaps together. During the process of the driving roller rotating to drive the papermaking felt bottom net to rotate, the ultrasonic welding head continuously spot-welds the overlapping papermaking felt bottom nets. In this way, the second layer of the papermaking felt bottom net and the first layer of the papermaking felt bottom net are welded together to form a double-layer papermaking felt bottom net structure. Repeating the above steps can wind the annular papermaking felt bottom net into multiple layers. When the papermaking felt bottom net rotates to an appropriate number of layers, the driving roller stops rotating, and the ultrasonic welding head continuously welds the overlapping papermaking felt bottom nets to complete the last welding of the annular papermaking felt bottom net. After the welding is completed, the lifting and welding assembly rises to cut the papermaking felt bottom net to obtain a complete annular papermaking felt bottom net product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understood. 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:

[0019] Figure 1 is a three-dimensional view of the papermaking felt bottom net welding machine of the present utility model;

[0020] Figure 2 is Figure 1 the enlarged structural schematic diagram of part A in

[0021] Figure 3For Figure 1 Schematic diagram of the enlarged structure at position B in

[0022] Figure 4 For Figure 1 Schematic diagram of the enlarged structure at position C in

[0023] Figure 5 Isometric view of the unwinding assembly according to an embodiment of the present utility model;

[0024] Figure 6 For Figure 5 Schematic diagram of the enlarged structure at position D in

[0025] Figure 7 Isometric view of the passive roller assembly according to an embodiment of the present utility model;

[0026] Figure 8 Side view of the passive roller assembly according to an embodiment of the present utility model;

[0027] Figure 9 Isometric view of the second connecting seat and the support lifting device according to an embodiment of the present utility model;

[0028] Figure 10 Schematic diagram of the pinch roll stretching assembly according to an embodiment of the present utility model;

[0029] Figure 11 Top view of a papermaking felt bottom net welding machine according to an embodiment of the present utility model;

[0030] Figure 12 For Figure 11 Cross-sectional view along the A-A direction;

[0031] Figure 13 For Figure 12 Schematic diagram of the enlarged structure at position E in

[0032] Figure 14 Isometric view of taking out the annular papermaking felt bottom net according to an embodiment of the present utility model;

[0033] Figure 15 Isometric view of the papermaking felt bottom net welding machine of the present utility model in the state of welding the annular papermaking felt bottom net;

[0034] Figure 16 For Figure 15 Cross-sectional view along the B-B direction.

[0035] Explanation of reference numerals:

[0036] 1. Machine base; 2. Unwinding assembly; 3. Lifting and welding assembly; 4. Passive roller assembly; 5. Driving roller assembly; 6. First motor; 7. First reducer; 8. Track; 9. Semi-circular groove; 10. Unwinding roller; 11. Support wheel; 12. First support base; 13. Second support base; 14. Fixed frame; 15. Slide rail; 16. Lifting frame; 17. Ultrasonic welding head; 18. Tension roller; 19. Guide roller; 20. Second motor; 21. Second reducer; 22. First lead screw; 23. Tension sensor; 24. Linear drive module; 25. First connecting seat; 26. Passive roller; 27. Mounting part; 28. Second connecting seat; 29. Driving roller; 30. Third reducer; 31. Third motor; 32. Swing-arm electromagnetic clamping plate assembly; 33. Electromagnetic clamping plate; 34. Second driving unit; 35. Swing plate; 36. Fixed beam; 37. Clamping plate; 38. Electromagnet; 39. Moving guide rail; 40. Fourth motor; 41. Fourth reducer; 42. Cantilever part; 421. Support part; 43. Fixed part; 431. Cantilever beam main body; 432. First connecting beam; 433. Second connecting beam; 44. Mounting seat; 45. Fixed groove; 46. Notch; 47. Sliding part; 48. Support and lifting device; 481. Fifth motor; 482. Second lead screw; 49. Lifting support seat; 50. Lifting power device; 51. Lifting plate; 52. First pinch roller stretching group; 53. Second pinch roller stretching assembly; 54. Pinch roller assembly; 55. First driving structure; 56. Connecting frame; 57. Fixed roller; 58. Moving roller; 59. Second driving structure; 60. Mounting plate; 61. Gear; 62. Rack; 63. Base net of papermaking felt. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0038] The following specifically introduces various non-limiting implementation manners of the present invention. The number of any element in the drawings is for illustration rather than limitation, and any naming is only for distinction without any limiting meaning.

[0039] Next, the principles and spirits of the present invention will be elaborated in detail with reference to several representative implementation manners of the present invention.

[0040] Refer to Figure 1 、 Figure 11 、 Figure 15, the utility model provides a welding machine for the bottom net 63 of a papermaking felt, which includes a machine base 1, a unwinding assembly 2, a lifting welding assembly 3, a passive roller assembly 4 and a driving roller assembly 5.

[0041] Referring to Figure 1 , Figure 5 , Figure 6 , the unwinding assembly 2 includes a first driving unit, a first speed reducer 7, a track 8, a fixed seat and an unwinding roller 10. The fixed seat is arranged on the machine base 1. The fixed seat includes two support seats arranged at intervals. A semi-circular groove 9 is arranged on the support seat. The opening of the semi-circular groove 9 faces upwards. Two support wheels 11 are rotatably installed in the semi-circular groove 9. The rotation axes of the support wheels 11 are parallel to the unwinding roller 10. The unwinding roller 10 is detachably connected to the support seat. Specifically, the opposite ends of the unwinding roller 10 are respectively placed in the semi-circular grooves 9 of the two support seats and are supported by the support wheels 11 of each support seat. The first driving unit is a first motor 6. The first motor 6 is fixed on a support seat. The support seat fixing the first motor 6 is the first support seat 12, and the other support seat is the second support seat 13. The output end of the first motor 6 is drivingly connected to the first speed reducer 7 fixed on the first support seat 12. The output end of the first speed reducer 7 is detachably connected to one end of the unwinding roller 10. Driven by the first motor 6, the unwinding roller 10 unwinds or winds the coil material of the bottom net 63 of the papermaking felt.

[0042] Referring to Figure 1 , Figure 5 , Figure 6 , the track 8 extends along the width direction of the machine base 1 and is arranged on the machine base 1. The first support seat 12 and / or the second support seat 13 are slidably arranged on the track 8 so that the first support seat 12 and the second support seat 13 can slide along the track 8, thereby adjusting the distance between the first support seat 12 and the second support seat 13.

[0043] Referring to Figure 1 , Figure 5 , Figure 6 , since the unwinding roller 10 is detachably connected to the output end of the first speed reducer 7, and the opposite ends of the unwinding roller 10 are respectively supported by the two support wheels 11 of the first support seat 12 and the two support wheels 11 of the second support seat 13, when it is necessary to replace different unwinding rollers 10, only the distance between the first support seat 12 and the second support seat 13 needs to be adjusted, and different lengths of unwinding rollers 10 can be replaced, so as to realize unwinding of the bottom net 63 of the papermaking felt with different widths.

[0044] Referring to Figure 5 , Figure 6 , it should be noted that the detachable structure of the detachable connection between the unwinding roller 10 and the output end of the first speed reducer 7 is selected from the existing detachable structures and will not be described here.

[0045] Referring toFigure 1 , Figure 4 , The lifting and welding assembly 3 includes two fixed frames 14, a lifting frame 16, an ultrasonic welding head 17, a tension roller 18, a guide roller 19, a driver, a second reducer 21 and a first lead screw 22. The two fixed frames 14 are arranged on the machine base 1. Two slide rails 15 extending in the vertical direction are respectively arranged on the two fixed frames 14. The two slide rails 15 on the fixed frame 14 are arranged in parallel at intervals. Connecting pieces are fixed at the opposite ends of the lifting frame 16. The two connecting pieces are respectively slidably connected with the slide rails 15 on the two fixed frames 14. The driver is a second motor 20. A second motor 20 and a second reducer 21 are arranged at the top end of the fixed frame 14. The output shaft of the second motor 20 is drivingly connected with the second reducer 21. A first lead screw 22 is arranged on the fixed frame 14. The first lead screw 22 extends in the vertical direction and is located between the two slide rails 15 on the fixed frame 14. The lead screw is connected with the output end of the second reducer 21. The second motor 20 drives the first lead screw 22 through the second reducer 21 to drive the lifting frame 16 to lift and lower.

[0046] Refer to Figure 1 , Figure 12 , Figure 13 , Figure 16 , The tension roller 18 is rotatably arranged on the lifting frame 16. The tension roller 18 is parallel to the unwinding roller 10. A tension sensor 23 is arranged on the tension roller 18. The tension sensor 23 is used to detect the tension of the paper-making felt base net 63 bypassing the tension roller 18. The guide roller 19 is rotatably arranged on the lifting frame 16. The tension roller 18 is located between the guide roller 19 and the unwinding roller 10. The guide roller 19 rises and falls with the lifting frame 16. The paper-making felt base net 63 first bypasses the upper surface of the tension roller 18 and then winds around the lower surface of the guide roller 19. Thus, when the lifting frame 16 descends, the guide roller 19 descends with the lifting frame 16, and the lower surface of the guide roller 19 presses the paper-making felt base net 63, improving the overlapping effect of the wound annular base net.

[0047] Refer to Figures 11 - 13 , A plurality of ultrasonic welding heads 17 are arranged. The plurality of ultrasonic welding heads 17 are arranged on the lifting frame 16. The plurality of ultrasonic welding heads 17 are arranged at intervals in the width direction of the machine base 1. The plurality of ultrasonic welding heads 17 rise and fall with the lifting frame 16 in the vertical direction.

[0048] Refer to Figures 11 - 13 , Figure 16, the ultrasonic welding head 17 is slidably arranged on the lifting frame 16, and the sliding direction of the ultrasonic welding head 17 is parallel to the unwinding roller 10. Specifically, a linear driving module 24 is arranged on the lifting frame 16. The linear driving module 24 is drivingly connected to the ultrasonic welding head 17, and the linear driving module 24 is used to drive the ultrasonic welding head 17 to slide along a direction parallel to the unwinding roller 10. It can be seen from this that the ultrasonic welding head 17 can not only lift and lower with the lifting frame 16, but also slide along a direction parallel to the unwinding roller 10. In this way, when welding the annular papermaking felt bottom net 63, the ultrasonic welding head 17 welds the annular papermaking felt bottom net 63 more fully.

[0049] Of course, in other embodiments, the structure for driving the sliding of the ultrasonic welding head 17 can also adopt a driving structure of gear-rack transmission, which is not limited here.

[0050] Refer to Figure 7 , Figure 8 , Figure 11 , Figure 14 , the passive roller assembly 4 includes two first connection seats 25 and a passive roller 26. The two first connection seats 25 are arranged on the machine base 1 at intervals along the width direction of the machine base 1. The opposite ends of the passive roller 26 where it rotates are respectively rotatably arranged on the two first connection seats 25, and the passive roller 26 is parallel to the unwinding roller 10.

[0051] Refer to Figure 1 , Figure 3 , Figures 11 - 16 , the driving roller assembly 5 is located between the passive roller assembly 4 and the lifting and welding assembly 3. The driving roller assembly 5 includes a mounting member 27, a second connection seat 28, a driving roller 29, a third speed reducer 30, and a third motor 31. The second connection seat 28 is arranged on the machine base 1, the mounting member 27 is arranged on the machine base 1, the opposite ends of the driving roller 29 are respectively arranged on the second connection seat 28 and the mounting member 27, the driving roller 29 is parallel to the passive roller 26, the third speed reducer 30 and the third motor 31 are arranged on the mounting member 27, and the third motor 31 is connected to the end of the driving roller 29 through the third speed reducer 30. Driven by the third motor 31, the driving roller 29 can rotate. Among them, the end of the coil material sleeved on the unwinding roller 10 sequentially bypasses the tension roller 18, the guide roller 19, the passive roller 26 and the driving roller 29 and is fixed on the upper surface of the driving roller 29, so that the papermaking felt bottom net 63 to be welded forms a ring, and the ultrasonic welding head 17 is used to weld the overlapping position of the annular papermaking felt bottom net 63.

[0052] In summary, when the utility model is in use, the first motor 6 drives the unwinding roller 10 to unwind the paper-making felt bottom net 63. After unwinding, one end of the paper-making felt bottom net 63 enters the lifting frame 16 from the bottom of the lifting frame 16. One end of the paper-making felt bottom net 63 sequentially bypasses the upper surface of the tension roller 18, then winds around the lower surface of the guide roller 19, and passes through the lifting and welding assembly 3 from the lower surface of the guide roller 19. Subsequently, one end of the paper-making felt bottom net 63 winds from the upper surface of the driving roller 29 to the upper surface of the driven roller 26, then winds from the upper surface of the driven roller 26 to the lower surface of the driven roller 26, and winds back to the lower surface of the driving roller 29 from the lower surface of the driven roller 26, and finally winds back to the upper surface of the driving roller 29 from the lower surface of the driving roller 29, and fixes one end of the paper-making felt bottom net 63 on the upper surface of the driving roller 29. In this way, the step of winding the paper-making felt bottom net 63 into a ring is completed. Subsequently, the lifting frame 16 descends, thereby driving the paper-making felt bottom net 63 to descend. The lower surface of the guide roller 19 presses down on the paper-making felt bottom net 63, so that the paper-making felt bottom net 63 is superposed with one end of the paper-making felt bottom net 63 fixed on the upper surface of the driving roller 29. Subsequently, according to the need, the tension sensor 23 on the tension roller 18 detects the current tension of the paper-making felt bottom net 63. According to the magnitude of the tension of the paper-making felt bottom net 63, the unwinding roller 10 performs unwinding or rewinding to adjust the tension of the paper-making felt bottom net 63 until the tension of the paper-making felt bottom net 63 is adjusted to an appropriate magnitude. The ultrasonic welding head 17 starts to weld the superposed paper-making felt bottom net 63 to complete the welding of the first layer of the paper-making felt bottom net 63. Subsequently, the driving roller 29 rotates, thereby driving the first layer of the paper-making felt bottom net 63 to rotate with the driving roller 29 and the driven roller 26. During the rotation, the unwinding roller 10 continuously unwinds the bottom net, so that the unwound paper-making felt bottom net 63 winds around the first layer of the paper-making felt bottom net 63 and is superposed together. During the process of the driving roller 29 rotating to drive the paper-making felt bottom net 63 to rotate, the ultrasonic welding head 17 continuously spot-welds the superposed paper-making felt bottom net 63. In this way, the second layer of the paper-making felt bottom net 63 and the first layer of the paper-making felt bottom net 63 are welded together to form a double-layer paper-making felt bottom net 63 structure. Repeating the above steps can wind the annular paper-making felt bottom net 63 into multiple layers. When the paper-making felt bottom net 63 rotates to an appropriate number of layers, the driving roller 29 stops rotating, and the ultrasonic welding head 17 continuously welds the superposed paper-making felt bottom net 63 to complete the last welding of the annular paper-making felt bottom net 63. After the welding is completed, the lifting and welding assembly 3 rises to cut the paper-making felt bottom net 63 to obtain a complete annular paper-making felt bottom net 63.

[0053] Refer to Figure 1 、 Figure 2 、 Figure 11 、 Figure 14, on the basis of the above structure, the papermaking felt bottom net 63 welding machine of the present utility model further includes a swing arm type electromagnetic clamping plate assembly 32. The swing arm type electromagnetic clamping plate assembly 32 includes an electromagnetic clamping plate 33, a second driving unit 34 and two swing plates 35. The electromagnetic clamping plate 33 is used to clamp and fix one end of the papermaking felt bottom net 63. One ends of the two swing plates 35 are respectively connected to the opposite ends of the electromagnetic clamping plate 33, and the other ends of the two swing plates 35 are respectively rotatably sleeved on the opposite ends of the driving roller 29. The second driving unit 34 is arranged on the second connecting seat 28, and the second driving unit 34 is used to drive the swing plate 35 to swing around the driving roller 29.

[0054] Refer to Figure 1 , Figure 2 , Figures 11 - 13 , Figure 14 , specifically, the electromagnetic clamping plate 33 extends along the width direction of the machine base 1, the electromagnetic clamping plate 33 is parallel to the driving roller 29, there are two second driving units 34, the second driving unit 34 selects a cylinder, the cylinder is fixed on the second connecting seat 28, the telescopic ends of the two cylinders are respectively connected to the two swing plates 35, and the cylinder drives the two swing plates 35 to swing around the driving roller 29. It can be seen that the electromagnetic clamping plate 33 can fix one end of the annular papermaking felt bottom net 63 during production, and can swing and stretch the end of the papermaking felt bottom net 63 located on the driving roller 29, so that when the ultrasonic welding head 17 welds the annular papermaking felt bottom net 63, the papermaking felt bottom net 63 fits more fully.

[0055] Refer to Figure 1 , Figure 2 , Figures 11 - 13 , it should be added that the electromagnetic clamping plate 33 includes a fixed beam 36, a clamping plate 37 and an electromagnet 38. The opposite ends of the fixed beam 36 are respectively connected to the two swing plates 35. The clamping plate 37 is arranged on the upper surface of the fixed beam 36. The clamping plate 37 is hinged to the fixed beam 36, and the clamping plate 37 and the fixed beam 36 can be hinged through a hinge. Specifically, the position where the clamping plate 37 is hinged to the fixed beam 36 is on the side of the fixed beam 36 facing away from the unwinding assembly 2, so that the clamping plate 37 can rotate around the fixed beam 36. The electromagnet 38 is fixed on the fixed beam 36. After the electromagnet 38 is energized, it can generate a magnetic force to attract the clamping plate 37, so that the clamping plate 37 fits on the upper surface of the fixed beam 36, and one end of the papermaking felt bottom net 63 is clamped between the fixed beam 36 and the clamping plate 37. Through the cooperation of the electromagnet 38 and the clamping plate 37, the clamping plate 37 can be more firmly fixed to the end of the papermaking felt bottom net 63, increasing the stability when fixing the end of the papermaking felt bottom net 63.

[0056] Refer to Figure 1 , Figure 11, the passive roller assembly 4 further includes two moving guide rails 39. The two moving guide rails 39 are arranged on the machine base 1 at intervals along the width direction of the machine base 1. The moving guide rails 39 extend in the horizontal direction and are perpendicular to the passive roller 26. A driving device is further provided on the first connecting seat 25. The driving device is used to drive the first connecting seat 25 to move along the moving guide rail 39.

[0057] Referring to Figure 1 , Figure 7 , Figure 8 , Figures 11 - 13 , specifically, the moving guide rail 39 is configured as a rack 62. The driving device includes a fourth motor 40 and a fourth speed reducer 41. The fourth motor 40 drives and connects a gear 61 through the fourth speed reducer 41. The gear 61 meshes with the rack 62. In this way, when the fourth motor 40 drives the gear 61 to mesh and transmit with the rack 62, the first connecting seat 25 can be driven to move along the rack 62. It can be seen from this that the first connecting seat 25 can move along the length direction of the machine base 1 on the machine base 1. When producing a circular fabric, the circular papermaking felt bottom net 63 will be stretched on the passive roller assembly 4. Driven by the passive roller 26, papermaking felt bottom nets 63 with different ring lengths can be controlled to be produced.

[0058] Referring to Figures 1 - 3 , Figure 9 , Figures 11 - 13 , Figure 16 , the second connecting seat 28 includes a cantilever part 42 and a fixing part 43. The opposite ends of the driving roller 29 are respectively rotatably arranged on the cantilever part 42 and the mounting member 27. The fixing part 43 includes a cantilever beam main body 431, a first connecting beam 432 and a second connecting beam 433. The cantilever beam main body 431 is parallel to the driving roller 29. The first connecting beam 432 extends in the vertical direction. The first end of the first connecting beam 432 is connected to the cantilever beam main body 431. The second end of the first connecting beam 432 is connected to the second connecting beam 433. The second connecting beam 433 is fixed on the machine base 1. The cantilever part 42 is fixed at the end of the cantilever beam main body 431 facing away from the first connecting beam 432. It can be seen from this that when the papermaking felt bottom net 63 is wound into a ring on the driving roller 29 and the passive roller 26, the papermaking felt bottom net 63 can pass through the gap between the connection of the cantilever beam main body 431 and the second connecting beam 433 from the lower surface of the passive roller 26 and wind back to the lower surface of the driving roller 29.

[0059] Referring to Figures 1 - 3 , Figure 9 , Figures 11 - 13 , Figure 16, one end of the cantilever portion 42 facing the mounting seat 44 is configured as a support portion 421. The support portion 421 is provided on the side of the cantilever portion 42 facing away from the driving roller 29 and is used to support one end of the driven roller 26. The projection of the cantilever portion 42 in the horizontal direction parallel to the driving roller 29 is within the inner ring of the annular papermaking felt bottom net 63; the first connecting seat 25 includes two mounting seats 44. The mounting seat 44 is provided with a fixing groove 45. The opposite ends of the driven roller 26 are respectively rotatably arranged in the two fixing grooves 45. The opposite ends of the driven roller 26 are respectively rotatably arranged on the two mounting seats 44. A notch 46 is formed on the side of the fixing groove 45 facing the driving roller 29. A sliding member 47 is slidably connected to the notch 46, and the sliding member 47 can slide outwards towards the side of the driving roller 29 so that the support portion 421 on the cantilever portion 42 can be inserted into the bottom of the fixing groove 45 from the position of the notch 46 to support the driven roller 26. It can be seen from this that if the welded annular papermaking felt bottom net 63 is to be taken out, the two first connecting seats 25 move synchronously along the moving guide rail 39 to the second connecting seat 28, so that the support portion 421 slides into the fixing groove 45 on the first connecting seat 25 corresponding to the cantilever portion 42 from the bottom of the driven roller 26, so that the support portion 421 forms a support for one end of the driven roller 26. Subsequently, the sliding member 47 on one second connecting seat 28 is slid and removed, and the second connecting seat 28 with the sliding block removed slides along the moving guide rail 39 in the direction away from the first connecting seat 25, so that the right end of the driven roller 26 is separated from the second connecting seat 28 on the right end, so that the right end of the driven roller 26 is supported by the support portion 421. In this way, the welded annular papermaking felt bottom net 63 can be taken out from the right end along the width direction of the machine base 1.

[0060] Refer to Figures 1 - 3 , Figure 9 , Figures 11 - 13 , Figure 16, on the basis of the above structure, the papermaking felt bottom net 63 welding machine further includes a support lifting device 48, which includes a lifting support base 49, a lifting power device 50 and a lifting plate 51. Among them, the lifting support base 49 is fixed on the machine base 1, the lifting plate 51 is liftably arranged on the lifting support base 49, the fifth motor 481 and the fifth reducer are arranged on the lifting support base 49, the lifting power device 50 is arranged on the lifting support frame, and the lifting power device 50 is used to drive the lifting plate 51 to lift in the vertical direction so that the lifting plate 51 can rise to contact and support the cantilever part 42. Specifically, the lifting power device 50 is the fifth motor 481 and the second lead screw. The second lead screw is arranged on the lifting support frame, the second lead screw 482 extends in the vertical direction, and the fifth motor 481 drives the second lead screw to drive the lifting plate 51 to lift. The lifting power device 50 is used to drive the lifting plate 51 to lift in the vertical direction so that the lifting plate 51 can rise to contact and support the cantilever part 42. Thus, through the lifting support of the lifting plate 51, the rising of the lifting plate 51 can support the cantilever part 42 to increase stability, and the descending of the lifting plate 51 can provide space for the cantilever part 42 to unload the welded annular papermaking felt bottom net 63.

[0061] Refer to Figure 1 , Figure 10 , Figures 11 - 13 , in addition, the papermaking felt bottom net 63 welding machine further includes a pair of pinch roll stretching components, which are respectively the first pinch roll stretching component 52 and the second pinch roll stretching component 53, and the structures of the first pinch roll stretching component 52 and the first pinch roll stretching component 52 are the same. The first pinch roll stretching component is arranged between the guide roll 19 and the tension roll 18, and the second pinch roll stretching component is arranged between the cantilever beam and the driving roll 29. Among them, taking the first pinch roll stretching component 52 as an example for description, the first pinch roll stretching component 52 includes a pinch roll component 54, a first driving structure 55 and a connecting frame 56. The connecting frame 56 is arranged on the machine base 1, the pinch roll component 54 is slidably arranged on the connecting frame 56, the pinch roll component 54 is used to roll and clamp the opposite surfaces of the papermaking felt bottom net 63, the first driving structure 55 is arranged on the connecting frame 56, and the first driving structure 55 can select a linear driving module 24. The first driving structure 55 is used to drive the pinch roll component 54 to slide along the connecting frame 56, and the sliding direction of the pinch roll component 54 is parallel to the driving roll 29. Thus, through the paired pinch roll stretching components, the stretching of the papermaking felt bottom net 63 can be realized, so that the papermaking felt bottom net 63 will not wrinkle and the surface remains flat.

[0062] Of course, in other embodiments, the first driving structure 55 can also adopt driving structures such as electric push rods, which are not limited here.

[0063] Refer to Figure 1 , Figure 10, Figures 11 - 13 , specifically, the clamping bar assembly 54 includes a fixed roller 57, a moving roller 58, a second driving structure 59 and a mounting plate 60. The fixed roller 57 and the moving roller 58 are parallel to the driving roller 29. The moving roller 58 and the fixed roller 57 are spaced apart on the mounting plate 60, and the moving roller 58 is slidably arranged on the mounting plate 60. The second driving structure 59 is arranged on the mounting plate 60. The second driving structure 59 is a cylinder. The output end of the second driving structure 59 is connected to the moving roller 58 for driving the moving roller 58 to shorten or increase the distance between the fixed roller 57 and the moving roller 58. Thus, the distance between the fixed roller 57 and the moving roller 58 can be changed to clamp and stretch the papermaking felt base net 63 with different thicknesses.

[0064] In summary, the working principle of the present utility model is as follows:

[0065] Adjust the two support seats according to the width of the base net 63 of the papermaking felt, so that the two support seats of the unwinding assembly 2 are adjusted to an appropriate distance on the track 8. Subsequently, according to the width of the base net 63 of the papermaking felt, use an appropriate unwinding roller 10 to unwind the coil of the base net 63 of the papermaking felt. The first motor 6 drives the unwinding roller 10 to unwind the base net 63 of the papermaking felt. After unwinding, one end of the base net 63 of the papermaking felt enters from the bottom of the lifting frame 16, successively bypasses the upper surface of the tension roller 18, passes through the gap between the fixed roller 57 and the moving roller 58 of the first nip roller stretching group 52, then winds around the lower surface of the guide roller 19, exits from the lower surface of the guide roller 19, then winds from the upper surface of the driving roller 29 to the upper surface of the driven roller 26, then winds from the upper surface of the driven roller 26 to the lower surface of the driven roller 26, and exits from the lower surface of the driven roller 26. The base net 63 of the papermaking felt after exiting passes through the gap between the cantilever beam main body 431 and the connection between the second connecting beam 433, and passes through the gap between the fixed roller 57 and the adjusting roller on the second nip roller stretching assembly, then winds back to the lower surface of the driving roller 29, and finally winds back from the lower surface of the driving roller 29 to the upper surface of the driving roller 29 and is fixed on the swing arm type electromagnetic clamping plate assembly 32 and clamped by the clamping plate 37. In this way, the step of winding the base net 63 of the papermaking felt into a ring is completed; then the second driving unit 34 drives the electromagnetic clamping plate 33 to swing onto the cantilever beam, and the driven roller 26 moves correspondingly on the moving guide rail 39, thereby changing the loop length of the base net 63 of the papermaking felt. Subsequently, the lifting and welding assembly 3 starts to descend. Under the guidance of the guide roller 19, the base net 63 of the papermaking felt is superposed with the end of the base net 63 of the papermaking felt fixed on the clamping plate 37. Then, according to the tension of the base net 63 of the papermaking felt detected by the tension sensor 23 on the tension roller 18, the unwinding roller 10 performs appropriate winding or unwinding on the base net 63 of the papermaking felt, thereby changing the tension of the base net 63 of the papermaking felt. Then, the ultrasonic welding head 17 starts to weld the superposed base nets 63 of the papermaking felt;Subsequently, the electromagnetic clamping plate 33 assembly releases the end of the papermaking felt bottom net 63, so that the head and tail ends of the annular papermaking felt bottom net 63 can be welded together to complete the welding of the first layer of the papermaking felt bottom net 63. Subsequently, the driving roller 29 rotates, thereby driving the first layer of the papermaking felt bottom net 63 to rotate with the driving roller 29 and the driven roller 26. During the rotation process, the unwinding roller 10 continuously unwinds the bottom net, so that the unwound papermaking felt bottom net 63 winds around the first layer of the papermaking felt bottom net 63 and overlaps. During the process of the driving roller 29 rotating to drive the papermaking felt bottom net 63 to rotate, the ultrasonic welding head 17 continuously spot-welds the overlapped papermaking felt bottom nets 63, so that the second layer of the papermaking felt bottom net 63 and the first layer of the papermaking felt bottom net 63 are welded together to form a double-layer papermaking felt bottom net 63 structure. By repeating the above steps, the annular papermaking felt bottom net 63 can be wound in multiple layers. When the papermaking felt bottom net 63 reaches the appropriate number of layers, the driving roller 29 stops rotating, and the ultrasonic welding head 17 continuously welds the overlapped papermaking felt bottom nets 63 to complete the last welding of the annular papermaking felt bottom net 63. After the welding is completed, the lifting and welding assembly 3 rises to cut the papermaking felt bottom net 63 to obtain a complete annular papermaking felt bottom net 63 product.;

[0066] When it is necessary to take out the welded annular papermaking felt bottom net 63, the two first connection seats 25 synchronously move along the moving guide rail 39 to the second connection seat 28, so that the supporting part 421 slides into the fixing groove 45 on the first connection seat 25 corresponding to the cantilever part 42 from the bottom of the driven roller 26, so that the supporting part 421 supports one end of the driven roller 26. Subsequently, the sliding part 47 on the second connection seat 28 slides, and the second connection seat 28 without the sliding block slides along the moving guide rail 39 in the direction away from the first connection seat 25, so that the right end of the driven roller 26 is separated from the second connection seat 28 on the right end, so that the right end of the driven roller 26 is supported by the supporting part 421. At the same time, the lifting power device 50 drives the lifting plate 51 to descend, so that the lifting plate 51 is separated from the cantilever part 42. In this way, the welded annular papermaking felt bottom net 63 can be taken out from the right end along the width direction of the machine base 1.

Claims

1. A papermaking felt bottom mesh welding machine, characterized in that: The invention comprises a machine base, an unwinding assembly, a lifting and welding assembly, a passive roller assembly and a driving roller assembly, wherein the unwinding assembly is used to unwind or rewind the coil of the papermaking felt bottom net; the lifting and welding assembly comprises a fixed frame, a lifting frame, an ultrasonic welding head, a driver and a tension roller, wherein the fixed frame is arranged on the machine base, the lifting frame is arranged on the fixed frame in a vertically movable manner, the driver is arranged on the fixed frame, and is used to drive the lifting frame to lift and lower, the tension roller is arranged on the lifting frame, the tension roller is parallel to the unwinding assembly, and a tension sensor is arranged on the tension roller, and is used to detect the movement of the tension roller around the unwinding assembly. The tension of the bottom net of the papermaking felt of the tension roller; the ultrasonic welding head is arranged on the lifting frame; the passive roller assembly includes a first connecting seat and a passive roller, the first connecting seat is arranged on the machine base, and the passive roller is rotatably arranged on the first connecting seat; the driving roller assembly is located between the passive roller assembly and the lifting welding assembly, the driving roller assembly includes a mounting member, a second connecting seat and a driving roller, the second connecting seat is arranged on the machine base, the mounting member is arranged on the machine base, the opposite ends of the driving roller are respectively rotatably arranged on the second connecting seat and the mounting member, and the driving roller is parallel to the passive roller.

2. A papermaking felt bottom mesh welding machine according to claim 1, characterized in that: It also includes a swing-arm type electromagnetic clamping plate assembly, which includes an electromagnetic clamping plate, a second driving unit and two swinging plates. The electromagnetic clamping plate is used to clamp and fix one end of the bottom net of the papermaking felt, one end of the two swinging plates are respectively connected to the opposite ends of the electromagnetic clamping plate, and the other ends of the two swinging plates are respectively rotatably mounted on the opposite ends of the driving roller; the second driving unit is arranged on the second connecting seat, and is used to drive the swinging plate to swing around the driving roller.

3. A papermaking felt bottom mesh welding machine according to claim 2, characterized in that: The electromagnetic clamp includes a fixed beam, a clamp and an electromagnet. The opposite ends of the fixed beam are respectively connected to two swing plates. The clamp is arranged on the upper surface of the fixed beam, and the clamp is hinged to the fixed beam. The electromagnet is fixed on the fixed beam. The electromagnet can generate magnetic force to attract the clamp, so that one end of the bottom net of the papermaking felt is clamped between the fixed beam and the clamp.

4. A papermaking felt bottom mesh welding machine according to claim 1, characterized in that: It also includes a movable guide rail, which is arranged on the machine base. The movable guide rail extends in the horizontal direction and is perpendicular to the passive roller. The first connecting seat is provided with a driving device, which is used to drive the first connecting seat to move along the movable guide rail.

5. A papermaking felt bottom mesh welding machine according to claim 4, characterized in that: The second connecting seat includes a cantilever portion and a fixed portion, and the opposite ends of the driving roller are rotatably arranged on the cantilever portion and the mounting member respectively, and the fixed portion includes a cantilever beam body, a first connecting beam and a second connecting beam, the cantilever beam body is parallel to the driving roller, the first connecting beam extends in a vertical direction, the first end of the first connecting beam is connected to the cantilever beam body, the second end of the first connecting beam is connected to the fixed portion, the second connecting beam is fixed on the machine base, the cantilever portion is fixed to the end of the cantilever beam body facing away from the first connecting beam, and the cantilever portion is in a horizontal direction parallel to the driving roller The upward projection is within the inner ring of the annular bottom net of the papermaking felt; the first connecting seat includes two mounting seats, the mounting seats are provided with fixed grooves, the opposite ends of the passive roller are respectively rotatably set in the two fixed grooves, the opposite ends of the passive roller are respectively rotatably set on the two mounting seats, the fixed groove is provided with a notch on the side facing the driving roller, the notch is slidably connected with a sliding member, and the sliding member can be slid outwardly toward the side of the driving roller and removed, so that the end of the cantilever part facing the mounting seat can be inserted from the position of the notch into the bottom supporting the passive roller in the fixed groove.

6. A papermaking felt bottom mesh welding machine according to claim 5, characterized in that: The machine also includes a supporting lifting device, which includes a lifting support seat, a lifting power device and a lifting plate. The lifting support seat is fixed on the machine base, and the lifting plate can be lifted on the lifting support seat. The lifting power device is arranged on the lifting support seat and is used to drive the lifting plate to lift in a vertical direction so that the lifting plate can rise to contact with the cantilever part to support the cantilever part.

7. A papermaking felt bottom mesh welding machine according to claim 6, characterized in that: It also includes a clamping roller stretching assembly, which includes a clamping rod assembly, a first driving structure and a connecting frame. The connecting frame is arranged on the machine base, and the clamping rod assembly is slidably arranged on the connecting frame. The clamping rod assembly is used to rollingly clamp the relative surfaces of the bottom net of the papermaking felt. The first driving structure is arranged on the connecting frame. The first driving structure is used to drive the clamping rod assembly to slide along the connecting frame, and the sliding direction of the clamping rod assembly is parallel to the driving roller.

8. A papermaking felt bottom mesh welding machine according to claim 7, characterized in that: The clamping roller assembly includes a fixed roller, a movable roller, a second driving structure and a mounting plate, wherein the fixed roller and the movable roller are parallel to the driving roller, the movable roller and the fixed roller are arranged on the mounting plate with a spacing, and the second driving structure is arranged on the mounting plate, and the second driving structure is used to drive the movable roller to shorten or increase the distance between the fixed roller and the movable roller.

9. The papermaking felt bottom mesh welding machine according to claim 1, characterized in that: The unwinding assembly includes a driving unit, a fixed seat, an unwinding roller and a track, the fixed seat is arranged on the machine base, the unwinding roller is arranged on the fixed seat, the fixed seat includes two support seats arranged at intervals, the track is parallel to the driving roller, at least one of the two support seats is slidably assembled on the track to adjust the distance between the two support seats; the opposite ends of the unwinding roller are rotatably arranged on the two support seats, and the unwinding roller is detachably connected to the support seats.

10. The papermaking felt bottom mesh welding machine according to claim 1, characterized in that: The ultrasonic horn is slidably arranged on the lifting frame, and the sliding direction of the ultrasonic horn is parallel to the driving roller.

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