Connecting rod type tensioning roller

Abstract

The utility model discloses a connecting rod type tensioning roller which comprises a main shaft, one end of the main shaft is in threaded connection with an adjusting nut, the outer side of the adjusting nut is fixedly provided with a plurality of evenly-distributed limiting supports, the ends, away from the adjusting nut, of the limiting supports are each provided with an expansion plate in a hinged mode, and the outer side of the main shaft is sleeved with a sliding guide pipe in a sliding mode. The end, away from the adjusting nut, of the sliding guide pipe is fixedly connected with an air cylinder body, multiple evenly-distributed swing connecting rods are hinged between the air cylinder body and the multiple expansion plates, and the side, away from the swing connecting rods, of the air cylinder body is fixedly connected with an air cylinder front cover which is matched with the air cylinder body to form a driving cavity. One end of the spindle away from the adjusting nut is in threaded connection with a positioning nut. According to the connecting rod type tensioning roller disclosed by the utility model, the tensioning state is regulated and controlled by adopting a connecting rod moving mode, so that the tensioning roller can be used for tensioning and supporting large-diameter and heavy-load products, and meanwhile, the tensioning and supporting diameter range of the tensioning roller is widened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tensioning roller, specifically relates to connecting rod type tensioning roller. BACKGROUND

[0002] Tensioning roller is a kind of device that can be changed by changing its diameter to support the reel type component, mostly applied in the field of winding equipment, wherein, gas inflation shaft is the more common tensioning roller at present, gas inflation shaft is mainly composed of shaft, multiple expansion blocks and expansion core tube, mainly by the way of sending compressed air to shaft to make expansion block pop out under the action of gas pressure, so as to realize the expansion support to the winding drum of different inner diameter.

[0003] However, with the continuous expansion of production scale, the inner diameter of product winding drum and the diameter of winding are continuously increased, due to the compressibility of gas, so that the expansion block in the gas inflation shaft will retract under heavy load, at this time, the expansion block and the expansion core tube will slide relatively, so that the tensioning support function of the expansion block is invalid, and the expansion block in the gas inflation shaft has small extension stroke, so that the gas inflation shaft has the problems of unstable tensioning support and small tensioning diameter range in actual application process.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a connecting rod type tensioning roller.

[0005] The information disclosed in this background section is only intended to increase the understanding of the general background of the present utility model, and should not be considered as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a connecting rod type tensioning roller, which can improve the stability and application range of tensioning support for large-diameter and heavy-load products.

[0007] In order to achieve the above object, the utility model provides a connecting rod type tensioning roller, including the main shaft, one end of the main shaft is connected with the adjusting nut, the outside of adjusting nut is fixedly assembled with a plurality of evenly distributed limit support, a plurality of limit support away from the one end of adjusting nut is all hinged assembly with the expansion plate, the outside of main shaft is sleeved with the sliding guide pipe, the one end of sliding guide pipe is fixedly connected with the cylinder body away from adjusting nut, a plurality of evenly distributed swing connecting rods are hinged between the cylinder body and a plurality of expansion plates, the side of cylinder body is fixedly connected with the cylinder front cover away from swing connecting rod, the cylinder front cover and cylinder body cooperate and form drive cavity, the gas flow channel is seted up in the main shaft, the gas flow channel is linked with drive cavity, the one end of main shaft is connected with the positioning nut away from adjusting nut, the positioning nut is arranged on the side of cylinder front cover away from cylinder body.

[0008] In one or more embodiments of the utility model, the side away from the expansion plate of a plurality of limit supports is fixedly connected with a plurality of friction blocks. By setting the friction block on the outer surface of the expansion plate, the friction of the outer surface of the friction block is improved, and the stability of the friction block for tensioning and supporting the winding drum is ensured. The reset spring is arranged between the adjusting nut and the sliding guide pipe, and the reset spring is sleeved on the outside of the main shaft. The sliding guide pipe is moved and reset by compression and release of the reset spring.

[0009] In one or more embodiments of the utility model, the one end close to the expansion plate of a plurality of limit supports is hinged with a first limit support, and the first limit support is fixedly connected with the inner wall of the expansion plate. The first limit support connects and limits the limit support and the expansion plate.

[0010] In one or more embodiments of the utility model, a pair of fixed connection rings are arranged on the side close to the adjusting nut of the sliding guide pipe, and the pair of fixed connection rings are fixedly sleeved on the outside of the sliding guide pipe. The fixed connection ring plays a role of assembling and fixing the plurality of first connecting supports. The outside of the pair of fixed connection rings is fixedly connected with a plurality of first connecting supports. The first connecting support plays a role of assembling and limiting the auxiliary supporting rod.

[0011] In one or more embodiments of the utility model, the auxiliary supporting rod is hinged in a plurality of first connecting supports. A plurality of expansion plates are assisted and supported by the swing of a plurality of auxiliary supporting rods, so that the tensioning and unfolding state of a plurality of expansion plates can be controlled. The second limit support is hinged at the end of the auxiliary supporting rod away from the first connecting support, and the second limit support is fixedly connected with the inner wall of the expansion plate. The second limit support plays a role of connecting the auxiliary supporting rod and the first connecting support.

[0012] In one or more embodiments of the utility model, connecting piece is fixedly connected between the sliding conduit and the cylinder body. The connecting piece plays a role of connecting and limiting the sliding conduit and the cylinder body. A sealing ring is fixedly assembled on the inner wall of the connecting piece, and the connecting piece and the sealing ring are both sleeved on the outside of the main shaft. The sealing ring ensures the connection and sealing of the connecting piece and the main shaft.

[0013] In one or more embodiments of the utility model, a plurality of second connecting supports are evenly distributed and hinged between the swing connecting rods and the cylinder body. The swing connecting rods and the cylinder body are connected and limited by the plurality of second connecting supports. A third limiting support is hinged to the end of each swing connecting rod away from the second connecting support, and the third limiting support is fixedly connected to the inner wall of the expansion plate. The swing connecting rods and the expansion plate are connected and limited by the third limiting support.

[0014] In one or more embodiments of the utility model, an inner stopper is fixedly connected to one end of the cylinder front cover in the driving cavity, and the inner stopper is slidingly assembled on the outside of the main shaft. The sliding stroke of the cylinder body is adjusted by arranging inner stoppers of different sizes.

[0015] In one or more embodiments of the utility model, a limiting sealing ring is arranged between the inner stopper and the cylinder body, and the limiting sealing ring is sleeved on the outside of the inner stopper. The inner stopper and the cylinder body are connected and sealed by the inner stopper.

[0016] In one or more embodiments of the utility model, a countersunk assembly blind hole is formed in the end of the main shaft away from the adjusting nut, the countersunk assembly blind hole is in communication with the gas guide channel, and a gas filling valve is fixedly assembled in the countersunk assembly blind hole. The gas filling valve is used for plugging and limiting the gas guide channel, and the gas inlet and exhaust states of the gas guide channel can be controlled.

[0017] Compared with the prior art, the connecting rod type tensioning roller disclosed in the utility model adjusts and controls the tensioning state by moving the connecting rod, so that the tensioning roller can tension and support large-diameter and heavy-load products, and the tensioning support diameter range of the tensioning roller is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings described below are only some embodiments described in the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0019] Figure 1This is a front sectional view of a linkage-type tension roller in one embodiment of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0021] Figure 3 This is a partial structural schematic diagram of the linkage-type tension roller in one embodiment of the present invention;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at point B;

[0023] Figure 5 for Figure 3 Schematic diagram of the structure at point C;

[0024] Figure 6 This is a partial three-dimensional view of the linkage-type tension roller in one embodiment of the present invention;

[0025] Figure 7 This is a perspective view of a linkage-type tensioning roller in one embodiment of the present invention.

[0026] Explanation of key figure labels:

[0027] 1-Main shaft, 2-Adjusting nut, 3-Limit bracket, 4-Tightening plate, 5-Sliding guide tube, 6-Cylinder body, 7-Swing connecting rod, 8-Cylinder front cover, 9-Air guide channel, 10-Positioning nut, 11-Friction block, 12-Reset spring, 13-First limit support, 14-Fixed connecting ring, 15-First connecting support, 16-Auxiliary support rod, 17-Second limit support, 18-Connecting piece, 19-Sealing ring, 20-Second connecting support, 21-Third limit support, 22-Inner stop block, 23-Limit sealing ring, 24-Inflation valve. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0029] like Figures 1 to 7 As shown, in one embodiment of the present invention, the linkage tensioning roller includes a main shaft 1.

[0030] like Figure 1As shown, one end of the main shaft 1 is threadedly connected to an adjusting nut 2. The adjusting nut 2 is used to support, fix, and control the movement of the limiting bracket 3. At the same time, the winding diameter range of the multiple tensioning plates 4 can be adjusted by moving the adjusting nut 2.

[0031] like Figure 1 As shown, multiple evenly distributed limiting brackets 3 are fixedly mounted on the outer side of the adjusting nut 2. The multiple limiting brackets 3 support and limit the multiple tensioning plates 4.

[0032] Specifically, different lengths of limit brackets 3 can be selected according to the actual inner diameter of the winding drum.

[0033] like Figure 6 As shown, each of the multiple limiting brackets 3 is hinged to one end away from the adjusting nut 2 and fitted with a tensioning plate 4. The tensioning state is controlled by controlling the expansion and contraction of the multiple tensioning plates 4.

[0034] like Figure 6 As shown, each of the multiple limiting brackets 3 has a first limiting support 13 hinged to one end near the tension plate 4. The first limiting support 13 is fixedly connected to the inner wall of the tension plate 4. The first limiting support 13 serves to connect and limit the limiting brackets 3 and the tension plate 4.

[0035] like Figures 3 to 6 As shown, multiple friction blocks 11 are fixedly connected to one side of each of the multiple tension plates 4 that are opposite to each other. By setting the friction blocks 11 on the outer surface of the tension plates 4, the friction force on the outer surface of the friction blocks 11 is increased, ensuring the stability of the friction blocks 11 in providing tension support for the winding drum.

[0036] like Figures 1 to 4 As shown, a sliding guide tube 5 is slidably fitted on the outer side of the main shaft 1. The cylinder body 6 and the fixed connecting ring 14 are assembled, fixed, and moved through the sliding guide tube 5, which facilitates the movement of the fixed connecting ring 14 by sliding the sliding guide tube 5, thereby facilitating the swing control of the auxiliary support rod 16.

[0037] like Figures 1 to 4 As shown, a pair of fixed connecting rings 14 are arranged on the side of the sliding guide tube 5 close to the adjusting nut 2, and the pair of fixed connecting rings 14 are fixedly fitted on the outside of the sliding guide tube 5. The fixed connecting rings 14 serve to assemble and fix multiple sets of first connecting supports 15. Multiple sets of first connecting supports 15 are fixedly connected to the outside of each pair of fixed connecting rings 14. The first connecting supports 15 serve to limit the assembly of the auxiliary support rod 16.

[0038] like Figures 3 to 4As shown, each of the multiple sets of first connecting supports 15 is hinged with an auxiliary support rod 16. The swinging of these auxiliary support rods 16 provides auxiliary support for the multiple sets of tension plates 4, thus facilitating the control of the tension and unfolding states of the tension plates 4. A second limiting support 17 is hinged to the end of each auxiliary support rod 16 away from the first connecting support 15, and the second limiting support 17 is fixedly connected to the inner wall of the tension plate 4. The second limiting support 17 serves to connect the auxiliary support rod 16 to the first connecting support 15.

[0039] like Figures 3 to 4 As shown, a return spring 12 is provided between the adjusting nut 2 and the sliding guide tube 5, and the return spring 12 is fitted on the outside of the main shaft 1. The compression and release of the return spring 12 plays a role in moving and resetting the sliding guide tube 5.

[0040] like Figures 1 to 2 As shown, the end of the sliding guide tube 5 away from the adjusting nut 2 is fixedly connected to the cylinder body 6. The cylinder body 6, the swing connecting rod 7, and the main shaft 1 cooperate to form a drive cavity, which facilitates the drive control of the cylinder body 6 by supplying compressed air into the drive cavity.

[0041] like Figures 3 to 5 As shown, a connector 18 is fixedly connected between the sliding guide tube 5 and the cylinder body 6. The connector 18 serves to limit the connection between the sliding guide tube 5 and the cylinder body 6.

[0042] like Figures 3 to 5 As shown, a sealing ring 19 is fixedly fitted on the inner wall of the connector 18, and both the connector 18 and the sealing ring 19 are fitted onto the outer side of the spindle 1. The sealing ring 19 ensures the airtight connection between the connector 18 and the spindle 1.

[0043] like Figures 3 to 5 As shown, multiple evenly distributed swing links 7 are hinged between the cylinder body 6 and multiple tension plates 4. The tension plates 4 and the cylinder body 6 are connected by the multiple swing links 7.

[0044] like Figures 1 to 2 As shown, multiple swing links 7 are hinged to the cylinder body 6 by multiple sets of evenly distributed second connecting supports 20. The multiple sets of second connecting supports 20 limit the connection between the swing links 7 and the cylinder body 6.

[0045] like Figure 6 As shown, each of the multiple swing links 7 has a third limiting support 21 hinged to one end away from the second connecting support 20. The third limiting support 21 is fixedly connected to the inner wall of the tension plate 4. The third limiting support 21 limits the connection between the swing links 7 and the tension plate 4.

[0046] like Figures 1 to 2As shown, a cylinder front cover 8 is fixedly connected to the side of the cylinder body 6 away from the swing linkage 7. The cylinder front cover 8 and the cylinder body 6 cooperate to form a drive cavity. This facilitates the driving of the cylinder body 6 by supplying compressed air into the drive cavity, thereby facilitating the drive control of the sliding guide 5.

[0047] like Figures 1 to 2 As shown, an inner stop block 22 is fixedly connected to one end of the cylinder front cover 8 located within the drive cavity, and the inner stop block 22 is slidably mounted on the outside of the main shaft 1. The sliding stroke of the cylinder body 6 is adjusted by arranging inner stop blocks 22 of different sizes.

[0048] like Figures 1 to 2 As shown, a limiting seal ring 23 is provided between the inner stop block 22 and the cylinder body 6, and the limiting seal ring 23 is fitted on the outside of the inner stop block 22. The inner stop block 22 ensures the sealing of the connection between the inner stop block 22 and the cylinder body 6.

[0049] like Figures 1 to 2 As shown, an airflow channel 9 is provided inside the main shaft 1, and the airflow channel 9 is connected to the drive cavity. This facilitates the delivery of compressed air into the drive cavity through the airflow channel 9, thereby facilitating the movement and driving of the cylinder block 6.

[0050] Specifically, the air duct 9 has an inclined air inlet on one side close to the drive cavity. By continuously supplying compressed air into the drive cavity through the inclined air inlet, the cylinder body 6 can drive the sliding guide 5 to slide outside the main shaft 1 under the action of air pressure.

[0051] like Figures 1 to 2 As shown, a positioning nut 10 is threadedly connected to the end of the main shaft 1 away from the adjusting nut 2. The positioning nut 10 is located on the side of the cylinder front cover 8 opposite to the cylinder body 6. The positioning nut 10 is threadedly connected to the main shaft 1 to limit the movement of the cylinder front cover 8, reducing the risk of slippage of the cylinder body 6 during use.

[0052] Specifically, the end of the spindle 1 away from the adjusting nut 2 is provided with a countersunk mounting blind hole, which is connected to the air guide channel 9.

[0053] like Figures 1 to 2 As shown, an inflation valve 24 is fixedly installed inside the countersunk blind hole. The inflation valve 24 blocks and limits the airflow channel 9, and at the same time, it can control the air intake and exhaust states of the airflow channel 9.

[0054] Among them, the inflation valve 24 is commercially available and can be purchased and used directly.

[0055] In practical use, when tensioning is required, compressed air is delivered into the airflow channel 9 through the inflation valve 24. The compressed air is delivered into the drive cavity along the inclined air inlet, so that the cylinder body 6 can drive the sliding guide 5 to slide outside the main shaft 1 under the action of air pressure. When the sliding guide 5 slides, it will drive multiple swing linkages 7 and auxiliary support rods 16 to swing, so that multiple tension plates 4 can drive the friction block 11 to move outward under the action of the limit bracket 3. The tensioning is limited by the expansion of multiple tension plates 4. After tensioning, the cylinder front cover 8 can be slidably limited by fixing the positioning nut 10 with threads.

[0056] When retraction is required, the limit bracket 3 must first be retracted, and the air in the drive cavity must be discharged through the inflation valve 24. Subsequently, the sliding guide 5 can be reset as the reset spring 12 is released. At the same time, the swing link 7 and the auxiliary support rod 16 will swing synchronously, and will drive multiple tension plates 4 to contract.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A linkage-type tension roller, characterized in that, The device includes a main spindle, one end of which is threadedly connected to an adjusting nut. Multiple evenly distributed limiting brackets are fixedly mounted on the outer side of the adjusting nut. Each of the limiting brackets has a tensioning plate hinged to its end opposite the adjusting nut. A sliding guide tube is slidably fitted onto the outer side of the main spindle. A cylinder body is fixedly connected to the end of the sliding guide tube away from the adjusting nut. Multiple evenly distributed swing rods are hinged between the cylinder body and the tensioning plates. A cylinder front cover is fixedly connected to the side of the cylinder body opposite to the swing rods. The cylinder front cover and the cylinder body cooperate to form a driving cavity. An airflow channel is opened inside the main spindle and communicates with the driving cavity. A positioning nut is threadedly connected to the end of the main spindle away from the adjusting nut, and the positioning nut is located on the side of the cylinder front cover opposite to the cylinder body.

2. The linkage-type tensioning roller according to claim 1, characterized in that, Multiple friction blocks are fixedly connected to the opposite sides of the multiple tensioning plates, and a return spring is provided between the adjusting nut and the sliding guide tube. The return spring is sleeved on the outside of the main shaft.

3. The linkage-type tensioning roller according to claim 1, characterized in that, Each of the plurality of limiting brackets has a first limiting support hinged to one end of the end close to the tension plate, and the first limiting support is fixedly connected to the inner wall of the tension plate.

4. The linkage-type tensioning roller according to claim 1, characterized in that, A pair of fixed connecting rings are arranged on the side of the sliding guide tube close to the adjusting nut. The pair of fixed connecting rings are fixedly fitted on the outside of the sliding guide tube, and multiple sets of first connecting supports are fixedly connected to the outside of each pair of fixed connecting rings.

5. The linkage-type tensioning roller according to claim 4, characterized in that, Each of the first connecting supports is hinged with an auxiliary support rod. The end of the auxiliary support rod away from the first connecting support is hinged with a second limiting support. The second limiting support is fixedly connected to the inner wall of the tensioning plate.

6. The linkage-type tensioning roller according to claim 1, characterized in that, A connector is fixedly connected between the sliding guide tube and the cylinder body. A sealing ring is fixedly fitted on the inner wall of the connector. Both the connector and the sealing ring are fitted onto the outer side of the main shaft.

7. The linkage-type tensioning roller according to claim 1, characterized in that, Multiple sets of evenly distributed second connecting supports are hinged between the multiple swing links and the cylinder body. A third limiting support is hinged to the end of each of the multiple swing links away from the second connecting supports. The third limiting support is fixedly connected to the inner wall of the tensioning plate.

8. The linkage-type tensioning roller according to claim 7, characterized in that, An inner stop block is fixedly connected to one end of the cylinder front cover located in the drive cavity, and the inner stop block is slidably assembled on the outside of the main shaft.

9. The linkage-type tensioning roller according to claim 8, characterized in that, A limiting seal ring is provided between the inner stop block and the cylinder body. The limiting seal ring is fitted on the outer side of the inner stop block. A countersunk mounting blind hole is provided at the end of the main shaft away from the adjusting nut. The countersunk mounting blind hole is connected to the air guide channel. An air filling valve is fixedly installed in the countersunk mounting blind hole.

10. The linkage-type tensioning roller according to claim 1, characterized in that, The airflow channel has an inclined air inlet on one side close to the drive cavity.

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