Nonwoven fabric tensioning device

Abstract

The utility model provides a kind of non-woven fabric tensioning device, including fixed plate, pivot, cylinder, connecting rod and telescopic cylinder.Two pivots are installed on fixed plate and are misaligned rotation, and its both ends are respectively connected with misaligned first connecting plate and second connecting plate;Cylinder is rotationally installed on second connecting plate, and connecting rod is hinged to the end of first connecting plate to form parallelogram structure;Telescopic cylinder drives first connecting plate to rotate, and cylinder is driven to approach or move away by parallelogram structure to tension non-woven fabric.The utility model realizes cylinder synchronous adjustment by parallelogram structure, ensures that tensioning force is uniform, telescopic cylinder drive is convenient for flexible adjustment, cylinder rolling contact reduces non-woven fabric damage, and it is suitable for a variety of non-woven fabric processing scene.

Description

Technical Field

[0001] This utility model relates to the field of medical dressing technology, and in particular to a nonwoven fabric tensioning device. Background Technology

[0002] In the production and deep processing of nonwoven fabrics, processes such as conveying, cutting, and laminating are required. To ensure processing accuracy, tensioning devices are used to tension the nonwoven fabrics. Existing tensioning devices mostly adopt single-roller or double-roller extrusion structures, which have problems such as inflexible tension adjustment, easy damage to the edges of nonwoven fabrics, and poor versatility in adapting to nonwoven fabrics of different widths. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a non-woven fabric tensioning device to achieve flexible adjustment of tension force, strong adaptability and minimal damage to non-woven fabric.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A nonwoven fabric tensioning device includes a fixed plate, a rotating shaft, a roller, a connecting rod, and a telescopic cylinder. Two rotating shafts are mounted on the fixed plate in a staggered manner. A first connecting plate and a second connecting plate, also staggered, are fixedly connected to each end of the rotating shaft. The roller is rotatably mounted on the second connecting plate and is perpendicular to the fixed plate. The connecting rod is hinged to the ends of the first connecting plates of the two rotating shafts to form a parallelogram structure. The telescopic cylinder pushes one of the first connecting plates to rotate around the rotating shaft, causing the rollers on the two second connecting plates to move closer or further apart, thereby tensioning the nonwoven fabric sleeved on the roller.

[0005] Furthermore, the rotating shaft is mounted on the fixed plate via a mounting base, the mounting base is fixedly connected to the fixed plate, and the rotating shaft is rotatably connected to the mounting base via a bearing.

[0006] Furthermore, the roller is rotatably mounted on a rotating shaft via bearings, and a retaining ring is threaded to the end of the rotating shaft.

[0007] Furthermore, the rollers are provided in three sets, arranged side by side with intervals.

[0008] Furthermore, the ends of the first connecting plate and the second connecting plate are provided with strip grooves and connecting holes that cooperate with the rotating shaft, and bolts are installed thereon. The bolts pass through the strip grooves to lock the first connecting plate and the second connecting plate.

[0009] Furthermore, the connecting rod includes two connectors and a threaded cylinder. The connectors are hinged to the first connecting plate, and the two ends of the threaded cylinder are threaded to the connectors respectively. In this state, the threads on the two connectors are symmetrically arranged.

[0010] Furthermore, the outer wall cross-section of the threaded cylinder is a regular hexagon.

[0011] Furthermore, a locking nut is threaded onto the connector head, and the locking nut abuts against the end of the threaded cylinder.

[0012] Furthermore, the telescopic cylinder is a pneumatic cylinder or a hydraulic cylinder, the cylinder body of the telescopic cylinder is rotatably mounted on the fixed plate, and the telescopic shaft of the telescopic cylinder is hinged to the first connecting plate.

[0013] Furthermore, the telescopic cylinder is connected to a PLC control system, which controls the telescopic cylinder's extension and retraction amount and speed.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The parallelogram structure enables the synchronous counter-rotation of two shafts, ensuring uniform spacing between the upper and lower rollers and consistent tension in the nonwoven fabric. The telescopic cylinder drive allows for flexible adjustment of the tension, adapting to nonwoven fabrics of different thicknesses and materials. The rollers roll in contact with the nonwoven fabric, reducing frictional damage to the fabric surface. The overall structure is simple, easy to operate, and highly stable. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the rear structure of an embodiment of the present utility model.

[0016] The components include: 1. Fixed plate; 2. Rotating shaft; 3. Roller; 4. Connecting rod; 5. Telescopic cylinder; 6. Mounting base; 7. First connecting plate; 8. Second connecting plate; 9. Strip groove; 10. Retaining ring; 11. Connecting head; 12. Threaded cylinder; 13. Locking nut; 14. Hinge seat. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-2 As shown, a nonwoven fabric tensioning device includes a fixed plate 1, a rotating shaft 2, a roller 3, a connecting rod 4, and a telescopic cylinder 5.

[0019] The fixing plate 1 is made of Q235 steel plate with a thickness of 10-15mm and is vertically fixed to the equipment frame, serving as the installation base for the entire device. The two rotating shafts 2 are 45# steel round shafts with a diameter of 30-50mm. They are mounted on the fixing plate 1 in a staggered manner via mounting seats 6. The mounting seats 6 are fixed to the fixing plate 1 with M10 bolts. The rotating shafts 2 and the mounting seats 6 are rotatably connected by a 6205 deep groove ball bearing. The outer ring of the bearing is interference-fitted with the mounting seat 6, and the inner ring is transition-fitted with the rotating shaft 2.

[0020] A first connecting plate 7 and a second connecting plate 8 are welded to both ends of the rotating shaft 2, respectively. The first connecting plate 7 and the second connecting plate 8 are made of steel plates with a thickness of 8-12mm, and are offset from each other in the radial direction of the rotating shaft 2. The ends of the first connecting plate 7 and the second connecting plate 8 are provided with strip grooves 9 and connecting holes that mate with the rotating shaft 2. The two are locked together by M8 bolts passing through the strip grooves 9. Loosening the bolts can adjust the relative angle between the first connecting plate 7 and the second connecting plate 8, thereby adjusting the initial position of the roller 3.

[0021] Roller 3 is made of seamless steel pipe, with a 3-5mm thick silicone layer wrapped around its outer wall to reduce damage to the nonwoven fabric. Roller 3 is rotatably mounted on the end shaft of the second connecting plate 8 via a bearing of model 6004. Both ends of roller 3 are threaded with retaining rings 10, made of nylon, to limit the axial displacement of roller 3. In this embodiment, three sets of rollers 3 are arranged side-by-side at intervals along the axial direction of the rotating shaft 2, with a spacing of 50-80mm between adjacent rollers 3. They can be fitted onto rollers 3 at different positions according to the tension of the nonwoven fabric.

[0022] The connecting rod 4 includes two connectors 11 and a threaded cylinder 12. The connectors 11 are made of 45# steel, with one end hinged to the end of the first connecting plate 7 via a pin, and the other end having an external thread. The threaded cylinder 12 has internal threads at both ends, which are threaded to the two connectors 11 respectively, and the external threads of the two connectors 11 have opposite directions. The overall length of the connecting rod 4 can be adjusted by rotating the threaded cylinder 12. The outer wall cross-section of the threaded cylinder 12 is a regular hexagon with a side-to-side distance of 30-40mm, which is convenient for operation with a wrench. A locking nut 13 is threaded onto the connector 11. The locking nut 13 is an M12 hexagonal nut that abuts against the end of the threaded cylinder 12 to prevent loosening.

[0023] The telescopic cylinder 5 is a pneumatic cylinder of model SC63×200. Its cylinder body is rotatably mounted on the fixed plate 1 via a hinge seat 14, which is fixed to the fixed plate 1 with M12 bolts. The telescopic shaft of the telescopic cylinder 5 is hinged to the middle of one of the first connecting plates 7 via a fisheye joint, model F-M10. The telescopic cylinder 5 is connected to a PLC control system, which is model S7-200SMART. The PLC controller controls the telescopic amount and speed of the telescopic cylinder 5 through a solenoid valve, realizing the automatic adjustment of the tension force.

[0024] The working process of this embodiment is as follows: The non-woven fabric is wrapped around the upper and lower rollers 3 in sequence. The PLC control system controls the telescopic cylinder 5 to extend and retract according to the preset parameters, which pushes the first connecting plate 7 to rotate around the rotating shaft 2. Under the action of the parallelogram structure formed by the connecting rod 4, the two rotating shafts 2 rotate synchronously in opposite directions, which drives the rollers 3 on the second connecting plate 8 to move closer or further away from each other, changing the wrap angle and tension of the non-woven fabric, thereby realizing tension adjustment.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A nonwoven fabric tensioning device, characterized in that, The device includes a fixed plate, a rotating shaft, a roller, a connecting rod, and a telescopic cylinder. Two rotating shafts are mounted on the fixed plate in a staggered manner. The two ends of each rotating shaft are fixedly connected to a first connecting plate and a second connecting plate that are staggered. The roller is rotatably mounted on the second connecting plate and is perpendicular to the fixed plate. The connecting rod is hinged to the ends of the first connecting plates of the two rotating shafts to form a parallelogram structure. The telescopic cylinder pushes one of the first connecting plates to rotate around the rotating shaft, thereby causing the rollers on the two second connecting plates to move closer or further apart, thus tensioning the nonwoven fabric sleeved on the roller.

2. The nonwoven fabric tensioning device as described in claim 1, characterized in that, The rotating shaft is mounted on the fixed plate via a mounting base, the mounting base is fixedly connected to the fixed plate, and the rotating shaft and the mounting base are rotatably connected via bearings.

3. The nonwoven fabric tensioning device as described in claim 1, characterized in that, The roller is rotatably mounted on a rotating shaft via bearings, and a retaining ring is threaded to the end of the rotating shaft.

4. The nonwoven fabric tensioning device as described in claim 3, characterized in that, The rollers are arranged in three sets, side by side with intervals.

5. A nonwoven fabric tensioning device as described in claim 1, characterized in that, The ends of the first connecting plate and the second connecting plate are provided with strip grooves and connecting holes that cooperate with the rotating shaft, and bolts are installed thereon. The bolts pass through the strip grooves to lock the first connecting plate and the second connecting plate.

6. A nonwoven fabric tensioning device as described in claim 1, characterized in that, The connecting rod includes two connectors and a threaded cylinder. The connectors are hinged to the first connecting plate, and the two ends of the threaded cylinder are threaded to the connectors respectively. In this state, the threads on the two connectors are symmetrically arranged.

7. A nonwoven fabric tensioning device as described in claim 6, characterized in that, The outer wall cross-section of the threaded cylinder is a regular hexagon.

8. A nonwoven fabric tensioning device as described in claim 6, characterized in that, The connector head is threaded with a lock nut, which abuts against the end of the threaded cylinder.

9. A nonwoven fabric tensioning device as described in claim 1, characterized in that, The telescopic cylinder is a pneumatic cylinder or a hydraulic cylinder. The cylinder body of the telescopic cylinder is rotatably mounted on the fixed plate, and the telescopic shaft of the telescopic cylinder is hinged to the first connecting plate.

10. A nonwoven fabric tensioning device as described in claim 1, characterized in that, The telescopic cylinder is connected to a PLC control system, which controls the telescopic cylinder's extension and retraction amount and speed.

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