Chain tensioning and lubricating arrangement

Abstract

The present application relates to chain technical field, specifically to a kind of chain tensioning and lubricating structure, the bottom of its material receiving rack is equipped with lubricating component and several tensioning components, lubricating component and several tensioning components are arranged along transverse direction interval;Lubricating component includes lubricating sprocket and lubricating seat, lubricating sprocket is rotatably installed in lubricating seat, lubricating sprocket can be freely slipped on lubricating seat along vertical direction, lubricating sprocket is located above transmission chain, and lubricating sprocket is engaged with transmission chain;Each tensioning component includes tensioning sprocket and tensioning seat, tensioning sprocket is rotatably installed in tensioning seat, tensioning sprocket can be adjusted position on tensioning seat along vertical direction, and tensioning sprocket is engaged with transmission chain.Lubricating sprocket in the application is always engaged with transmission chain, when transmission chain tensioning state is adjusted, lubricating sprocket will slip synchronously with transmission chain, both ensure the sufficiency and uniformity of lubrication, and reduce the workload of manual adjustment, avoid affecting the continuous operation efficiency of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chain, in particular to a chain tensioning and lubricating structure. BACKGROUND

[0002] In the field of laser cutting application, the open flat line equipment is the core equipment to realize the continuous processing of plates, which mainly consists of uncoiling equipment, leveling equipment and laser cutting machine with continuous feeding function. In the operation process of the equipment, the laser cutting machine needs to complete the continuous operation of feeding, cutting and discharging. In order to ensure the stability and accuracy of plate conveying, chain transmission structure is usually used to realize the feeding and discharging actions.

[0003] With the increasing demand for processing large-size plates in industrial production, the conveying stroke of the open flat line equipment needs to be increased synchronously, which directly leads to the significant lengthening of the chain in the chain transmission structure. However, the lengthening of the chain brings two key problems: on the one hand, the chain is difficult to achieve effective tensioning, even if the initial tensioning is in place, it is easy to loosen in the long-term operation, which seriously affects the transmission accuracy; on the other hand, the traditional chain lubrication method (such as fixed lubrication point oil injection or manual greasing) has the defect of limited coverage, which cannot fully, uniformly and continuously lubricate the lengthened long chain, thereby affecting the service life of the chain and the stability of the equipment operation.

[0004] In the prior art, when tensioning and lubricating the chain, the tensioning adjustment of the chain is usually realized by the up-down movement of the tensioning wheel, and two fixed lubricating wheels are arranged to complete the lubrication by meshing with the sprocket. However, this scheme still has obvious deficiencies: after adjusting the position of the tensioning wheel to adjust the tensioning of the chain, the tensioning state of the chain changes, at this time, if the position of the lubricating wheel is not adjusted, the meshing depth and fit degree of the lubricating wheel and the chain will deviate, thereby causing insufficient and uneven lubrication; if the position of the lubricating wheel is manually adjusted to ensure the lubrication effect, it will increase the workload, consume time and labor cost, and affect the continuous operation efficiency of the equipment. SUMMARY

[0005] In order to solve the technical problems in the prior art that the lubricating wheel in the chain transmission chain tensioning and lubricating device is fixedly arranged, after adjusting the position of the tensioning wheel to adjust the tensioning of the chain, if the position of the lubricating wheel is not adjusted, the meshing depth and fit degree of the lubricating wheel and the chain will deviate, and if the position of the lubricating wheel is adjusted, it will increase the workload, consume time and labor cost, and reduce the continuous operation efficiency of the equipment, the present application provides a chain tensioning and lubricating structure.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is:

[0007] The application discloses a chain tensioning and lubricating structure, which comprises a cutting frame and a material receiving frame, the cutting frame and the material receiving frame are butted in front and back along a transverse direction, the front end of the cutting frame is provided with a driven sprocket, the rear end of the material receiving frame is provided with a driving sprocket, a transmission chain is arranged between the driven sprocket and the driving sprocket, the bottom of the material receiving frame is provided with lubricating components and a plurality of tensioning components, and the lubricating components and the plurality of tensioning components are arranged at intervals along the transverse direction; the lubricating components comprise a lubricating sprocket and a lubricating seat, the lubricating sprocket is rotatably installed on the lubricating seat, the lubricating sprocket can freely slide in a vertical direction on the lubricating seat, the lubricating sprocket is located above the transmission chain, and the lubricating sprocket is engaged with the transmission chain; and each tensioning component comprises a tensioning sprocket and a tensioning seat, the tensioning sprocket is rotatably installed on the tensioning seat, the tensioning sprocket can adjust a position in the vertical direction on the tensioning seat, and the tensioning sprocket is engaged with the transmission chain.

[0008] By arranging the lubricating components and the plurality of tensioning components at intervals at the bottom of the material receiving frame, the tensioning components can adjust the tightness of the transmission chain, the lubricating components are engaged with the transmission chain to supply oil, the tensioning control and lubricating coverage of the long transmission chain are realized, the transmission precision is not affected due to looseness of the transmission chain, and the service life of the transmission chain is not shortened due to insufficient lubrication. Importantly, the lubricating sprocket in the application can freely slide in the vertical direction on the lubricating seat and is always engaged with the transmission chain, when the tensioning components adjust the position of the transmission chain (for example, the transmission chain moves upward or downward due to tensioning), the lubricating sprocket slides synchronously with the transmission chain, the engagement depth and the adhesion of the lubricating sprocket to the transmission chain can be maintained without manual intervention, the sufficiency and uniformity of lubrication are ensured, the workload of manual adjustment is reduced, and the continuous operation efficiency of the equipment is not affected.

[0009] As a preferred implementation manner of the chain tensioning and lubricating structure, the lubricating seat comprises a lubricating guide rail, the lubricating guide rail extends in the vertical direction, the lubricating guide rail is fixed to the material receiving frame, a sliding block is slidably arranged on the lubricating guide rail, the sliding block can freely slide on the lubricating guide rail, and the lubricating sprocket is rotatably installed on the sliding block.

[0010] By adopting the above structural scheme, the lubricating guide rail provides a stable guide structure for the vertical sliding of the lubricating sprocket, transverse deviation or jamming of the lubricating sprocket in the sliding process is avoided, the lubricating sprocket is always accurately engaged with the transmission chain, and the stability and reliability of lubrication are further improved.

[0011] As a preferred implementation manner of the chain tensioning and lubricating structure, the lubricating sprocket is provided with an oil inlet, an oil storage cavity is arranged in the lubricating sprocket, an oil outlet is arranged in a tooth groove of the lubricating sprocket, and the oil storage cavity is in communication with the oil inlet and the oil outlet.

[0012] By adopting the above structural design, an oil inlet is provided on the lubricating sprocket, an oil storage chamber is provided inside, and an oil outlet is provided in the tooth groove. The oil storage chamber is connected to both the oil inlet and the oil outlet, allowing lubricating oil to enter the oil storage chamber through the oil inlet and be stored there. Then, it is directly delivered to the tooth groove where the transmission chain meshes with the lubricating sprocket through the oil outlet. This allows the lubricating oil to act directly on the transmission contact parts of the transmission chain, resulting in more precise lubrication. At the same time, the oil storage chamber can temporarily store lubricating oil, achieving continuous lubrication of the transmission chain and avoiding localized wear of the transmission chain due to intermittent oil supply.

[0013] As a preferred implementation of the chain tensioning and lubrication structure, the lubrication sprocket is coaxially and fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the slider, the oil inlet is located at the center of one end of the rotating shaft, and a rotary joint is provided at the oil inlet.

[0014] By adopting the above structural scheme, the lubricating sprocket is fixed coaxially with the rotating shaft, and the rotating shaft is rotatably connected to the slider, ensuring that the lubricating sprocket can rotate synchronously with the transmission chain, reducing frictional loss when the two mesh. At the same time, the oil inlet is set at the center of one end of the rotating shaft and a rotary joint is added, so that the external oil supply pipe can be stably connected to the oil inlet through the rotary joint. Even if the rotating shaft rotates at high speed with the lubricating sprocket, the oil supply pipe will not be tangled or twisted, ensuring that the lubricating oil can be continuously and stably delivered to the oil storage chamber.

[0015] As a preferred implementation of the chain tensioning and lubrication structure, the slider is provided with a lubricating oil pipe fixing component.

[0016] By adopting the above structural design, a lubricating oil pipe fixing component is installed on the slider to fix the lubricating oil pipe connected to the rotary joint onto the slider. When the slider slides vertically along the lubrication guide rail with the lubrication sprocket, the lubricating oil pipe will move synchronously with the slider, avoiding the oil pipe from loosening, falling off, or colliding and rubbing against other components due to the slider sliding. This further ensures the integrity and stability of the oil supply path and ensures the continuous and reliable operation of the lubrication system.

[0017] As a preferred implementation of the chain tensioning and lubrication structure, the slider is equipped with a counterweight, and the lubrication sprocket is rotatably mounted on the counterweight or the slider.

[0018] With the above structural design, the lubrication sprocket is located above the drive chain. A counterweight is placed on the slider, and the lubrication sprocket is rotatably mounted on the counterweight or slider. The weight of the counterweight exerts downward pressure on the lubrication sprocket, ensuring it remains tightly pressed against the drive chain. Even if the drive chain experiences slight up-and-down fluctuations due to operational vibration, the weight of the counterweight ensures stable engagement, preventing the lubrication sprocket from disengaging from the drive chain due to vibration, further guaranteeing the continuity and uniformity of lubrication.

[0019] As a preferred implementation of the chain tensioning and lubrication structure, several lubrication components are provided, with each lubrication component located between two adjacent tensioning components.

[0020] By adopting the above structural design, the lubrication components are respectively placed between two adjacent tensioning components. Utilizing the spaced distribution of the tensioning components, multiple lubrication components are distributed below the drive chain at the bottom of the receiving frame, ensuring that multiple segments of the drive chain are covered by lubrication. Compared to centralized placement, independently placed lubrication components allow for more comprehensive lubrication coverage of the drive chain, preventing lubrication dead zones and further extending the service life of the drive chain.

[0021] As a preferred implementation of a chain tensioning and lubrication structure, the tensioning seat includes a threaded rod with two adjusting nuts threadedly connected to it. A spring and a sliding sleeve are provided between the two adjusting nuts. Both the spring and the sliding sleeve are fitted around the outer circumference of the threaded rod, and the tensioning sprocket is rotatably connected to the sliding sleeve.

[0022] By adopting the above structural scheme, two adjusting nuts are set on the threaded rod, and a spring and a sliding sleeve are sleeved on it. Tightening the adjusting nuts can change the vertical position of the sliding sleeve on the threaded rod, thereby adjusting the height of the tension sprocket and achieving precise control of the tension of the transmission chain. At the same time, the elasticity of the spring can provide a buffer for the tension sprocket. When the transmission chain experiences changes in tension due to running vibration or slight stretching, the spring can adaptively adjust the tension force through its own expansion and contraction, avoiding damage to the transmission chain or tensioning components due to rigid adjustment.

[0023] As a preferred implementation of a chain tensioning and lubrication structure, each tensioning seat includes two threaded rods, both of which are connected to the base. Each threaded rod is equipped with two adjusting nuts, a spring, and a sliding sleeve. The two sliding sleeves on each tensioning seat are connected by a connecting block, and the tensioning sprocket is rotatably connected to the connecting block.

[0024] With the above structural design, each tensioning seat is equipped with two threaded rods, and two sliding sleeves are connected to the connecting block. The tensioning sprocket is rotatably connected to the connecting block, so that both ends of the tensioning sprocket engage with the threaded rods through the sliding sleeves. During adjustment, the force is evenly distributed at both ends, preventing the tensioning sprocket from tilting or shifting. At the same time, the double support structure of the two threaded rods can enhance the overall load-bearing capacity of the tensioning seat. Even if the tension of the transmission chain is large, it can ensure the stable operation of the tensioning component and avoid structural deformation caused by a single threaded rod support, further improving the reliability of the tensioning component.

[0025] As a preferred implementation of the chain tensioning and lubrication structure, there are five tensioning seats, which are tensioning seat one, tensioning seat two, tensioning seat three, tensioning seat four and tensioning seat five in sequence from the front end to the rear end of the receiving frame. The tensioning sprockets on tensioning seat one and tensioning seat five are located below the drive chain, the tensioning sprockets on tensioning seat two and tensioning seat four are located above the drive chain, and the tensioning sprocket on tensioning seat three is located above or below the drive chain.

[0026] By adopting the above structural scheme and setting five tensioning seats, the tensioning sprocket on tensioning seat one is positioned below the transmission chain, the tensioning sprocket on tensioning seat two is positioned above the transmission chain, the tensioning sprocket on tensioning seat three is positioned above or below the transmission chain, the tensioning sprocket on tensioning seat four is positioned above the transmission chain, and the tensioning sprocket on tensioning seat five is positioned below the transmission chain. This distribution method applies tension to the transmission chain from different directions, effectively suppressing the problem of sagging in the middle and local loosening caused by excessive length of the transmission chain. Among them, the upper and lower positions of tensioning seat three can be flexibly selected and adjusted according to the actual tension of the transmission chain, further adapting to the tension requirements under different working conditions, ensuring that the entire transmission chain always maintains a uniform and stable tension, and improving transmission accuracy.

[0027] The beneficial effects of this invention include:

[0028] This invention achieves tension control and lubrication coverage of long transmission chains by setting lubrication components and several tensioning components at intervals at the bottom of the receiving frame. This allows the tensioning components to adjust the tension of the transmission chain, and the lubrication components to engage with the transmission chain to supply oil. This avoids affecting the transmission accuracy due to the loose transmission chain, and also prevents the transmission chain from being shortened due to insufficient lubrication.

[0029] The lubrication sprocket in this invention can slide freely in the vertical direction on the lubrication seat and always mesh with the transmission chain. When the tensioning component adjusts the position of the transmission chain (such as when the transmission chain moves upward or downward due to tension), the lubrication sprocket will slide synchronously with the transmission chain. It can maintain the meshing depth and fit with the transmission chain without manual intervention, which not only ensures sufficient and uniform lubrication, but also reduces the workload of manual adjustment and avoids affecting the continuous operation efficiency of the equipment. Attached Figure Description

[0030] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1This is a schematic diagram of the structure of the cutting frame and the receiving frame in the prior art according to a specific embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the receiving frame in the prior art;

[0033] Figure 3 This is a schematic diagram of the receiving frame in a specific embodiment of the present invention. Figure 1 ;

[0034] Figure 4 This is a schematic diagram of the receiving frame in a specific embodiment of the present invention. Figure 2 ;

[0035] Figure 5 This is a schematic diagram of the structure of the lubrication component in a specific embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the lubricating sprocket in a specific embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the tensioning component in a specific embodiment of the present invention. Figure 1 ;

[0038] Figure 8 This is a schematic diagram of the tensioning component in a specific embodiment of the present invention. Figure 2 .

[0039] List of components and reference numerals:

[0040] 1. Cutting frame; 2. Receiving frame; 3. Driven sprocket; 4. Driven sprocket; 5. Drive chain;

[0041] 6. Lubrication components; 61. Lubrication sprocket; 611. Oil inlet; 612. Oil outlet; 62. Lubrication seat; 621. Lubrication guide rail; 622. Slider; 63. Rotating shaft; 64. Rotary joint; 65. Lubrication oil pipe fixing component; 66. Counterweight;

[0042] 7. Tensioning component; 71. Tensioning sprocket; 72. Tensioning seat; 721. Threaded rod; 722. Adjusting nut; 723. Spring; 724. Sliding sleeve; 725. Base; 726. Connecting block; 73. Tensioning seat one; 74. Tensioning seat two; 75. Tensioning seat three; 76. Tensioning seat four; 77. Tensioning seat five. Detailed Implementation

[0043] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] Reference Figure 1 and Figure 2 In the existing technology, sprockets are only installed at both ends of the cutting frame 1 and the receiving frame 2. With the increasing demand for large-size plate processing in industrial production, the chain length in the chain drive structure has been significantly extended. However, the increase in chain length has brought two major problems: on the one hand, it is difficult to achieve effective chain tension. Even if the initial tension is in place, it is very easy to loosen during long-term operation, which seriously affects the transmission accuracy. On the other hand, traditional chain lubrication methods (such as fixed lubrication point oil spraying or manual application of grease) have the defect of limited coverage. They cannot provide comprehensive, uniform and continuous lubrication for the extended chain, which can easily affect the service life of the chain and the stability of equipment operation.

[0045] While existing technologies can adjust chain tension by using a tension wheel with adjustable position and a lubrication wheel to perform lubrication through engagement with the sprocket, the chain tension changes after adjusting the tension wheel. If the lubrication wheel is not adjusted, the engagement depth and fit between the lubrication wheel and the chain will deviate, resulting in insufficient and uneven lubrication. Manually adjusting the lubrication wheel to ensure lubrication increases workload, time, and labor costs, and affects the continuous operating efficiency of the equipment.

[0046] To solve the above problems, refer to Figures 3-4 This embodiment proposes a chain tensioning and lubrication structure, including a cutting frame 1 and a receiving frame 2. The cutting frame 1 and the receiving frame 2 are connected front and rear in the transverse direction. The front end of the cutting frame 1 is provided with a driven sprocket 3, and the rear end of the receiving frame 2 is provided with a driving sprocket 4. A transmission chain 5 is wound between the driven sprocket 3 and the driving sprocket 4.

[0047] The bottom of the receiving frame 2 is provided with lubrication components 6 and several tensioning components 7, which are arranged at intervals in the lateral direction. In some embodiments, there are also several lubrication components 6, each of which is located between two adjacent tensioning components 7. That is, the lubrication components 6 are respectively placed between two adjacent tensioning components 7. Taking advantage of the spaced distribution of the tensioning components 7, multiple lubrication components 6 are distributed under the transmission chain 5 at the bottom of the receiving frame 2, so that multiple segment areas of the transmission chain 5 can be covered by the lubrication components 6. Compared with centralized arrangement, the independent arrangement of lubrication components 6 allows the lubricating oil to cover the transmission chain 5 more comprehensively, avoiding lubrication dead spots in the transmission chain 5 and further extending the service life of the transmission chain 5.

[0048] Reference Figure 5 The lubrication component 6 includes a lubrication sprocket 61 and a lubrication seat 62. The lubrication sprocket 61 is rotatably mounted on the lubrication seat 62 and can slide freely vertically on the lubrication seat 62. The lubrication sprocket 61 is located above the transmission chain 5 and meshes with the transmission chain 5. Thus, the lubrication sprocket 61 can slide freely vertically on the lubrication seat 62 and is always meshed with the transmission chain 5. When the tensioning component 7 adjusts the position of the transmission chain 5 (such as when the transmission chain 5 moves upward or downward due to tension), the lubrication sprocket 61 will slide synchronously with the transmission chain 5. It can maintain the meshing depth and fit with the transmission chain 5 without manual intervention, which not only ensures sufficient and uniform lubrication, but also reduces the workload of manual adjustment and avoids affecting the continuous operation efficiency of the equipment.

[0049] Reference Figure 5 The lubrication seat 62 includes a lubrication guide rail 621, which extends vertically and is fixed to the receiving frame 2. A slider 622 is slidably mounted on the lubrication guide rail 621, allowing it to slide freely. The lubrication guide rail 621 provides a stable guiding structure for the vertical sliding of the lubrication sprocket 61, preventing lateral deviation or jamming during sliding and ensuring precise engagement between the lubrication sprocket 61 and the transmission chain 5, further improving the stability and reliability of lubrication. A counterweight 66 is mounted on the slider 622. The lubrication sprocket 61 is rotatably mounted on the slider 622 or the counterweight 66. By using the counterweight 66 on the slider 622, the weight of the counterweight 66 exerts downward pressure on the lubrication sprocket 61, ensuring it remains tightly pressed against the transmission chain 5. Even if the transmission chain 5 fluctuates slightly due to vibration during operation, the weight of the counterweight 66 can ensure that the two remain stably engaged, preventing the lubrication sprocket 61 from losing contact with the transmission chain 5 due to vibration, and further ensuring the continuity and uniformity of lubrication.

[0050] Reference Figures 5-6The lubricating sprocket 61 is provided with an oil inlet 611, an oil storage chamber inside the lubricating sprocket 61, and an oil outlet 612 in the tooth groove of the lubricating sprocket 61. The oil storage chamber is connected to both the oil inlet 611 and the oil outlet 612. By providing an oil inlet 611, an oil storage chamber inside the lubricating sprocket 61, and an oil outlet 612 in the tooth groove of the lubricating sprocket 61, and with the oil storage chamber connected to both the oil inlet 611 and the oil outlet 612, lubricating oil can enter the oil storage chamber through the oil inlet 611 and be stored therein. Then, it can be directly delivered to the tooth groove where the transmission chain 5 meshes with the lubricating sprocket 61 through the oil outlet 612. This allows the lubricating oil to directly act on the transmission contact parts of the transmission chain 5, resulting in more precise lubrication. At the same time, the oil storage chamber can temporarily store lubricating oil, achieving continuous lubrication of the transmission chain 5 and avoiding localized wear of the transmission chain 5 due to intermittent oil supply.

[0051] Reference Figure 6 In order to ensure that the lubricating oil in the lubricating sprocket 61 can be continuously and stably delivered to the oil storage chamber and to further prevent the oil supply from the oil outlet 612 from being interrupted, the lubricating sprocket 61 is coaxially and fixedly connected to the rotating shaft 63, the rotating shaft 63 is rotatably connected to the slider 622, the oil inlet 611 is located at the center of one end of the rotating shaft 63, and a rotary joint 64 is provided at the oil inlet 611. The rotary joint 64 can be connected to an external oil supply pipe. At the same time, the slider 622 is provided with a lubricating oil pipe fixing component 65. By fixing the lubricating sprocket 61 coaxially with the rotating shaft 63, and rotatably connecting the rotating shaft 63 with the slider 622 or the counterweight 66, the lubricating sprocket 61 can rotate synchronously with the transmission chain 5, reducing frictional losses when the two mesh. At the same time, the oil inlet 611 is set at the center of one end of the rotating shaft 63, and a rotary joint 64 is added, so that the external oil supply pipe can be stably connected to the oil inlet 611 through the rotary joint 64. Even if the rotating shaft 63 rotates at high speed with the lubricating sprocket 61, the oil supply pipe will not be tangled or twisted, ensuring that the lubricating oil can be continuously and stably delivered to the oil storage chamber. A lubricating oil pipe fixing component 65 is provided on the slider 622 to fix the lubricating oil pipe connected to the rotary joint 64 on the slider 622. When the slider 622 slides vertically along the lubrication guide rail 621 with the lubrication sprocket 61, the external oil supply pipe will move synchronously with the slider 622, avoiding the oil pipe from loosening, falling off or colliding and rubbing with other components due to the sliding of the slider 622, further ensuring the integrity and stability of the oil supply passage, and ensuring the continuous and reliable operation of the lubrication system.

[0052] Each tensioning component 7 includes a tensioning sprocket 71 and a tensioning seat 72. The tensioning sprocket 71 is rotatably mounted on the tensioning seat 72. The tensioning sprocket 71 can be adjusted in the vertical direction on the tensioning seat 72. The tensioning sprocket 71 meshes with the drive chain 5.

[0053] Reference Figures 7-8The tensioning seat 72 includes two threaded rods 721, the bottom of which is connected to the base 725. Two adjusting nuts 722 are threaded onto each of the two threaded rods 721. A spring 723 and a sliding sleeve 724 are provided between the two adjusting nuts 722 on each threaded rod 721. The spring 723 and the sliding sleeve 724 are both sleeved on the outer circumference of the threaded rod 721. The two sliding sleeves 724 on each tensioning seat 72 are connected by a connecting block 726. The tensioning sprocket 71 is rotatably connected to the connecting block 726. By setting two adjusting nuts 722 on the threaded rod 721, and sleeved with spring 723 and sliding sleeve 724, turning the adjusting nuts 722 can change the vertical position of the sliding sleeve 724 on the threaded rod 721, thereby adjusting the height of the tension sprocket 71 and achieving precise control of the tension of the transmission chain 5. At the same time, the elasticity of the spring 723 can provide a buffer for the tension sprocket 71. When the transmission chain 5 experiences changes in tension due to running vibration or slight stretching, the spring 723 can adaptively adjust the tension through its own extension and contraction, avoiding damage to the transmission chain 5 or the tensioning component 7 due to rigid adjustment. In addition, two threaded rods 721 are provided on each tensioning seat 72, and two sliding sleeves 724 are connected by a connecting block 726. The tensioning sprocket 71 is rotatably connected to the connecting block 726, so that both ends of the tensioning sprocket 71 are engaged with the threaded rods 721 through the sliding sleeves 724 respectively. During adjustment, the force at both ends is uniform, avoiding tilting or offset of the tensioning sprocket 71. At the same time, the double support structure of the two threaded rods 721 can enhance the overall load-bearing capacity of the tensioning seat 72. Even if the tension of the transmission chain 5 is large, it can ensure the stable operation of the tensioning component 7, avoid structural deformation caused by a single threaded rod 721 support, and further improve the reliability of the tensioning component 7.

[0054] Reference Figures 7-8 The sliding sleeve 724 can be positioned above or below the spring 723. When the sliding sleeve 724 is positioned above the spring 723, it allows the tension sprocket 71 to be adjusted to its highest vertical limit. When the sliding sleeve 724 is positioned below the spring 723, it allows the tension sprocket 71 to be adjusted to its lowest vertical limit. If the drive chain 5 is above the tension sprocket 71, the sliding sleeve 724 is positioned above the spring 723, allowing the tension sprocket 71 to be adjusted to its highest limit, facilitating the tension sprocket 71 to press the drive chain 5 from below. If the drive chain 5 is below the tension sprocket 71, the sliding sleeve 724 is positioned below the spring 723, allowing the tension sprocket 71 to be adjusted to its lowest limit, facilitating the tension sprocket 71 to press the drive chain 5 from above.

[0055] Reference Figures 3-4There are five tensioning seats 72 in total. From the front end to the rear end of the receiving frame 2, they are tensioning seat 1 73, tensioning seat 2 74, tensioning seat 3 75, tensioning seat 4 76 and tensioning seat 5 77. The tensioning sprockets 71 on tensioning seat 1 73 and tensioning seat 5 77 are located below the transmission chain 5. The tensioning sprockets 71 on tensioning seat 2 74 and tensioning seat 4 76 are located above the transmission chain 5. The tensioning sprocket 71 on tensioning seat 3 75 is located above or below the transmission chain 5. Five tensioning seats 72 are provided. The tensioning sprocket 71 on tensioning seat one 73 is positioned below the transmission chain 5; the tensioning sprocket 71 on tensioning seat two 74 is positioned above the transmission chain 5; the tensioning sprocket 71 on tensioning seat three 75 is positioned either above or below the transmission chain 5; the tensioning sprocket 71 on tensioning seat four 76 is positioned above the transmission chain 5; and the tensioning sprocket 71 on tensioning seat five 77 is positioned below the transmission chain 5. This applies tension to the transmission chain 5 from different directions, effectively suppressing the problem of sagging in the middle and local loosening caused by the excessive length of the transmission chain 5. Tensioning seat three 75 can be flexibly positioned vertically, adjusting according to the actual tension of the transmission chain 5 to further adapt to the tension requirements under different working conditions, ensuring that the entire transmission chain 5 always maintains a uniform and stable tension, thus improving transmission accuracy.

[0056] When the tensioning sprocket 71 on the tensioning seat 3 75 is positioned above the transmission chain 5, and the tensioning sprocket 71 on the tensioning seat 3 75 has reached its lowest limit position, but the transmission chain 5 still cannot be tensioned, the tensioning sprocket 71 on the tensioning seat 3 75 can be positioned below the transmission chain 5 to support the transmission chain 5 from bottom to top.

[0057] Working principle:

[0058] Complete the lateral front-to-back connection between the cutting frame 1 and the receiving frame 2 to ensure that the two frames are firmly connected without any offset or loosening.

[0059] Confirm that the driven sprocket 3 (installed at the front end of the cutting frame 1) and the driving sprocket 4 (installed at the rear end of the receiving frame 2) are accurately positioned and rotate flexibly without jamming. Then, wind the transmission chain 5 between the two sprockets and initially adjust the position of the transmission chain 5 so that it is basically in contact with the sprocket teeth.

[0060] Inspect the lubrication component 6 and tensioning component 7 at the bottom of the receiving frame 2: The lubrication component 6 must ensure that the lubrication sprocket 61 meshes with the upper surface of the transmission chain 5, the slider 622 can slide smoothly along the lubrication guide rail 621, and the counterweight 66 is securely installed; The tensioning component 7 must confirm that the threaded rod 721, adjusting nut 722, spring 723, sliding sleeve 724, and connecting block 726 of the five tensioning seats 72 (tensioning seat one 73 to tensioning seat five 77) are fully assembled, and the tensioning sprockets 71 on tensioning seat one 73 and tensioning seat five 77 are located below the transmission chain 5, the tensioning sprockets 71 on tensioning seat two 74 and tensioning seat four 76 are located above the transmission chain 5, and the tensioning sprocket 71 on tensioning seat three 75 is selected to be located above or below the transmission chain 5 according to actual needs. All tensioning sprockets 71 are in contact with the transmission chain 5 and rotate without obstruction.

[0061] The external lubricating oil supply device is connected through the rotary joint 64 at one end of the rotating shaft 63 via the lubricating sprocket 61, and the lubricating oil pipe is fixed by the lubricating oil pipe fixing part 65 on the slider 622 to prevent the oil pipe from loosening.

[0062] Start the oil supply device to allow lubricating oil to enter the oil storage chamber inside the lubricating sprocket 61 through the external lubricating oil pipe, rotary joint 64, and oil inlet 611 at the center of the rotating shaft 63. Observe the oil outlet 612 in the tooth groove of the lubricating sprocket 61 to ensure that the lubricating oil can seep out evenly and that the oil storage chamber is filled with oil, thus initially forming the lubrication foundation.

[0063] From the front end to the rear end of the receiving frame 2, adjust the five tensioning seats 72 in sequence: for the two threaded rods 721 of each tensioning seat 72, simultaneously turn the upper and lower adjusting nuts 722 to change the vertical position of the sliding sleeve 724 on the threaded rod 721, thereby driving the connecting block 726 and the tensioning sprocket 71 to rise and fall.

[0064] For tensioning seat 1 73 and tensioning seat 5 77, adjust tensioning sprocket 71 upwards to tighten the drive chain 5 from below and prevent the two ends of the drive chain 5 from sagging. For tensioning seat 2 74 and tensioning seat 4 76, adjust tensioning sprocket 71 downwards to press the drive chain 5 from above and eliminate the slack in the middle of the drive chain 5. For tensioning seat 3 75, depending on the actual tightness of the drive chain 5, if it is located below the drive chain 5, tighten it upwards; if it is located above the drive chain 5, press it downwards until the drive chain 5 is taut as a whole, with no obvious sagging or looseness, and the engagement depth of the drive chain 5 with all tensioning sprockets 71, driven sprockets 3, and driving sprockets 4 is consistent.

[0065] After adjustment, the spring 723 on the threaded rod 721 of the tensioning seat 72 is in a slightly compressed state. On the one hand, the spring 723 can provide support for the tensioning sprocket 71. On the other hand, when the tensioning sprocket 71 is below the transmission chain 5 and the sliding sleeve 724 is above the spring 723, the spring 723 can be further compressed when the transmission chain 5 is pressed down due to vibration, absorbing excess tension and preventing damage to the transmission chain 5 or the tensioning component 7 due to rigid force, thus maintaining stable tension. When the tensioning sprocket 71 is above the transmission chain 5 and the sliding sleeve 724 is below the spring 723, the spring 723 can be further compressed when the transmission chain 5 is pushed upward due to vibration, absorbing excess tension and preventing damage to the transmission chain 5 or the tensioning component 7 due to rigid force, thus maintaining stable tension.

[0066] When the equipment's power unit is started, the drive sprocket 4 rotates, which drives the driven sprocket 3 to rotate synchronously via the transmission chain 5. The transmission chain 5 conveys the sheet material horizontally, initiating a continuous feeding, cutting, and unloading process. During operation, the transmission chain 5 drives all tension sprockets 71 and lubrication sprockets 61 to rotate synchronously: the tension sprockets 71 rotate with the transmission chain 5, reducing meshing friction; while the lubrication sprockets 61 rotate, due to possible slight vertical fluctuations in the transmission chain 5, the slider 622 slides freely along the lubrication guide rail 621, and with the gravity of the counterweight 66, they always maintain a tight mesh with the transmission chain 5, requiring no manual intervention.

[0067] When the lubricating sprocket 61 rotates, the lubricating oil in the oil storage chamber continuously seeps out through the tooth groove oil outlet 612 under the action of centrifugal force and gravity, and is directly applied to the meshing contact part between the transmission chain 5 and the lubricating sprocket 61, so as to achieve the follow-up effect of "lubrication upon meshing".

[0068] Because the lubrication components 6 are spaced apart between adjacent tensioning components 7, multiple lubrication sprockets 61 can cover a longer transmission chain 5, reducing lubrication dead angles; at the same time, when the slider 622 slides, the lubrication oil pipe moves synchronously with the fixed component, and the rotary joint 64 ensures that the pipe does not get tangled, and always provides stable oil supply, ensuring the continuity and uniformity of lubrication.

[0069] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chain tensioning and lubrication structure, comprising a cutting frame (1) and a receiving frame (2), the cutting frame (1) and the receiving frame (2) being joined together in the transverse direction, the front end of the cutting frame (1) being provided with a driven sprocket (3), the rear end of the receiving frame (2) being provided with a driving sprocket (4), and a transmission chain (5) being wound between the driven sprocket (3) and the driving sprocket (4), characterized in that, The bottom of the receiving frame (2) is provided with a lubrication component (6) and several tensioning components (7), which are arranged at intervals in the transverse direction; The lubrication component (6) includes a lubrication sprocket (61) and a lubrication seat (62). The lubrication sprocket (61) is rotatably mounted on the lubrication seat (62). The lubrication sprocket (61) can slide freely in the vertical direction on the lubrication seat (62). The lubrication sprocket (61) is located above the chain and meshes with the chain. Each tensioning component (7) includes a tensioning sprocket (71) and a tensioning seat (72). The tensioning sprocket (71) is rotatably mounted on the tensioning seat (72). The tensioning sprocket (71) can be adjusted in the vertical direction on the tensioning seat (72). The tensioning sprocket (71) meshes with the chain. The lubrication seat (62) includes a lubrication guide rail (621), which extends vertically and is fixed to the receiving frame (2). A slider (622) is slidably mounted on the lubrication guide rail (621). The slider (622) can slide freely on the lubrication guide rail (621). A lubrication sprocket (61) is rotatably mounted on the slider (622). The slider (622) is provided with a counterweight (66), and the lubricating sprocket (61) is rotatably mounted on the counterweight (66) or the slider (622). The tensioning seat (72) includes a threaded rod (721), on which two adjusting nuts (722) are threadedly connected. A spring (723) and a sliding sleeve (724) are provided between the two adjusting nuts (722). The spring (723) and the sliding sleeve (724) are both sleeved on the outer circumference of the threaded rod (721). The tensioning sprocket (71) is rotatably connected to the sliding sleeve (724).

2. The chain tensioning and lubrication structure according to claim 1, characterized in that, The lubricating sprocket (61) is provided with an oil inlet (611), the inside of the lubricating sprocket (61) is provided with an oil storage chamber, and the tooth groove of the lubricating sprocket (61) is provided with an oil outlet (612). The oil storage chamber is connected to both the oil inlet (611) and the oil outlet (612).

3. The chain tensioning and lubrication structure according to claim 2, characterized in that, The lubricating sprocket (61) is coaxially fixedly connected to the rotating shaft (63), the rotating shaft (63) is rotatably connected to the slider (622), the oil inlet (611) is located at the center of one end of the rotating shaft (63), and a rotary joint (64) is provided at the oil inlet (611).

4. The chain tensioning and lubrication structure according to claim 3, characterized in that, The slider (622) is provided with a lubricating oil pipe fixing component (65).

5. The chain tensioning and lubrication structure according to claim 1, characterized in that, There are several lubrication components (6), and each lubrication component (6) is located between two adjacent tensioning components (7).

6. The chain tensioning and lubrication structure according to claim 1, characterized in that, Each tensioning seat (72) includes two threaded rods (721), both of which are connected to the base (725). Each threaded rod (721) is provided with two adjusting nuts (722), a spring (723), and a sliding sleeve (724). The two sliding sleeves (724) on each tensioning seat (72) are connected by a connecting block (726), and the tensioning sprocket (71) is rotatably connected to the connecting block (726).

7. The chain tensioning and lubrication structure according to claim 1, characterized in that, There are five tension seats (72), which are tension seat one (73), tension seat two (74), tension seat three (75), tension seat four (76) and tension seat five (77) from the front end to the rear end of the receiving frame (2). The tension sprockets (71) on tension seat one (73) and tension seat five (77) are located below the transmission chain (5), the tension sprockets (71) on tension seat two (74) and tension seat four (76) are located above the transmission chain (5), and the tension sprockets (71) on tension seat three (75) are located above or below the transmission chain (5).

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