Tensioning mechanism of environment-friendly printing machine

Abstract

The utility model relates to the technical field of printing machines, in particular to a tensioning mechanism of an environment-friendly printing machine, which comprises a base plate, a printing machine body is fixedly mounted on one side of the top of the base plate, a feeding mechanism is arranged on the other side of the top of the base plate, and a fixing frame is fixedly mounted on the top of the base plate. Slide ways are formed in the front side and the rear side of the interior of the fixing frame. According to the tensioning mechanism of the environment-friendly printing machine, through cooperative use of the base plate, the printing machine body, the guide frame, the guide roller, the adjusting roller, a sliding block, a fixing frame, a connecting plate, a second motor, a printing stock roll, a sliding way, a pressure sensor, a triggering block, an electric telescopic rod and a mounting groove, in the tensioning degree adjusting process of the printing machine, a printing stock makes contact with the adjusting roller, and therefore the printing stock can be adjusted conveniently; the adjusting roller can directly monitor the pressure value of the printing stock in the conveying process through the pressure sensor, and the tensioning degree of the printing stock is adjusted in real time in cooperation with vertical movement of the upper adjusting roller.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a tensioning mechanism of an environmentally friendly printing machine. Background Art

[0002] The tensioning mechanism of an environmentally friendly printing press plays an important role in modern printing technology. As global attention to environmental impact increases, the printing industry is constantly seeking sustainable solutions. As a key component in a printing press, the tensioning mechanism is mainly responsible for maintaining the correct tension of printing materials such as paper or film during the printing process to ensure printing quality and accuracy.

[0003] The Chinese patent publication number is CN217263688U. It discloses a tensioning mechanism of an environmentally friendly printing machine, which includes a printing machine body, a bottom plate fixedly connected to the bottom end of the printing machine body, two feeding plates fixedly connected to the top end of the bottom plate, two tensioning plates and two adjustment plates, and a fast feeding mechanism is arranged on the feeding plate, and a substrate roll is arranged on the fast feeding mechanism. It is convenient to adjust the tension of the substrate body, prevent the substrate body from being damaged by being too tight or too loose, and is convenient to improve the production quality during printing and ensure the molding of the product.

[0004] With respect to the above-mentioned related technologies, the tensioning mechanism has some shortcomings. In actual use, when the tension changes, Spring 1 can trigger the up and down movement of the tensioning roller and activate the relevant sensor, thereby controlling the adjustment roller to adjust the tension of the substrate body. The elastic coefficient of Spring 1 will change with time and usage conditions, which will directly affect the response and stability of the tensioning mechanism. Spring 1 will produce variations in mechanical properties due to material aging or stress changes, which will cause the up and down movement of the tensioning roller to not fully match the actual tension requirements. In this case, even if the operation of the adjustment mechanism is triggered by sensor feedback, it is difficult to ensure stable tension adjustment during long-term use. Therefore, it is necessary to provide a tensioning mechanism for an environmentally friendly printing press to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a tensioning mechanism of an environmentally friendly printing press to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A tensioning mechanism for an environmentally friendly printing press, comprising:

[0008] A base plate, a printing machine body is fixedly installed on one side of the top of the base plate, a feeding mechanism is arranged on the other side of the top of the base plate, a fixing frame is fixedly installed on the top of the base plate, slideways are provided on the front and rear sides of the fixing frame, sliders are slidably installed on the two slideways, mounting grooves are provided on the opposite sides of the two sliders, and trigger blocks are slidably installed at the bottom of the two mounting grooves;

[0009] A pressure sensor is fixedly installed on the upper part of the installation groove, an adjusting roller is rotatably installed between the two trigger blocks, a connecting plate is fixedly installed below the opposite sides of the two sliders, an electric telescopic rod is fixedly installed on the bottom of the fixed frame, and the driving end of the electric telescopic rod is fixedly connected to the bottom of the connecting plate, and guide frames are fixedly installed on both sides of the fixed frame on the top of the base plate, and guide rollers are rotatably installed on the two guide frames.

[0010] Preferably, the feeding mechanism includes a limit groove, and the limit groove is opened on the other side of the top of the base plate, a threaded rod is rotatably installed inside the limit groove, and the outer wall of the threaded rod is provided with symmetrically distributed left-handed threads and right-handed threads, and the outer wall of the threaded rod is sleeved with symmetrically distributed adjustment blocks, and the adjustment blocks are slidably connected to the limit groove, and a movable plate is fixedly installed on the top of the two adjustment blocks, a printing material roll is arranged above the two movable plates, and a positioning shaft is rotatably installed above the opposite sides of the two movable plates, and the positioning shaft is plugged into the two end ports of the printing material roll, a second motor is fixedly installed above the front side of one of the movable plates, and the driving end of the second motor passes through the front side of a movable plate and extends to the back side of a movable plate and is fixedly connected to the front end of a positioning shaft, and the front side of the base plate is located in front of the limit groove and a driving mechanism is arranged.

[0011] Preferably, a limiting disk is fixedly mounted on the outer walls of the two positioning shafts.

[0012] Preferably, the diameter of the positioning shaft is matched to the inner diameter of the substrate roll.

[0013] Preferably, a plurality of positioning grooves are formed on the outer wall of the positioning shaft, a plurality of positioning posts are fixedly mounted on the inner walls at both ends of the substrate roll, and the positions and numbers of the positioning posts correspond to the positioning grooves, and the positioning posts are engaged with the positioning grooves.

[0014] Preferably, the driving mechanism includes a first motor, and the first motor is fixedly mounted on the front side of the base plate in front of the limiting groove, and the driving end of the first motor penetrates the base plate and extends to the inside of the limiting groove and is fixedly connected to the front end of the threaded rod.

[0015] Preferably, a threaded hole matched with the threaded rod is provided on the adjusting block, and the adjusting block is threadedly connected to the threaded rod through the threaded hole provided thereon.

[0016] Preferably, the positions of the two guide rollers are both higher than the adjusting roller.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model uses a base plate, a printer body, a guide frame, a guide roller, an adjusting roller, a slider, a fixing frame, a connecting plate, a second motor, a substrate roll, a slide, a pressure sensor, a trigger block, an electric telescopic rod and a mounting slot in coordination. During the tension adjustment process of the printer, the substrate contacts the adjusting roller, and the adjusting roller directly monitors the pressure value of the substrate during the conveying process through the pressure sensor, and cooperates with the vertical movement of the adjusting roller to adjust the tension of the substrate in real time. This more intuitive monitoring and adjustment method has obvious advantages over the traditional method that relies on spring triggering. The pressure sensor provides real-time and accurate pressure data, making the adjustment process more direct and immediate. The data fed back by the pressure sensor is used to dynamically adjust the height of the adjusting roller, thereby accurately controlling the tension of the substrate. This method avoids the negative impact of the elastic changes that may occur in the spring during long-term use on the tensioning accuracy.

[0019] 2. The utility model uses a first motor, a limit slot, a movable plate, a threaded rod, an adjustment block, a limit plate, a positioning shaft, a locking column, a locking slot and a feeding mechanism. During the process of disassembling and assembling the substrate roll, the device relies on the relative movement or opposite movement of the two movable plates to achieve rapid assembly and disassembly of the substrate roll, saving a lot of time and labor costs, avoiding the tedious steps of traditional manual operation of the fixed structure for disassembly and assembly, making the operation more flexible and rapid, and improving people's convenience in the operation process and the overall processing efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a front view structural schematic diagram of the utility model.

[0022] Figure 3 It is a side structural schematic diagram of the feeding mechanism in the utility model.

[0023] Figure 4 It is a structural schematic diagram of the positioning shaft in the utility model.

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the fixing frame in the utility model.

[0025] In the figure: 1. base plate; 2. printing machine body; 3. guide frame; 4. guide roller; 5. adjusting roller; 6. slider; 7. fixed frame; 8. connecting plate; 9. first motor; 10. limit slot; 11. second motor; 12. movable plate; 13. substrate roll; 14. threaded rod; 15. adjustment block; 16. slideway; 17. pressure sensor; 18. trigger block; 19. electric telescopic rod; 20. limit plate; 21. positioning shaft; 22. positioning column; 23. positioning slot; 24. mounting slot; 25. feeding mechanism. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 5 , an embodiment provided by the utility model:

[0031] A tensioning mechanism for an environmentally friendly printing press, comprising:

[0032] A base plate 1, a printer body 2 is fixedly mounted on one side of the top of the base plate 1, a feeding mechanism 25 is arranged on the other side of the top of the base plate 1, a fixing frame 7 is fixedly mounted on the top of the base plate 1, slideways 16 are provided on the front and rear sides of the fixing frame 7, sliders 6 are slidably mounted on the two slideways 16, mounting grooves 24 are provided on the opposite sides of the two sliders 6, and trigger blocks 18 are slidably mounted on the lower parts of the two mounting grooves 24;

[0033] A pressure sensor 17 is fixedly installed on the upper part of the mounting groove 24, an adjusting roller 5 is rotatably installed between the two trigger blocks 18, a connecting plate 8 is fixedly installed on the lower part of the opposite sides of the two sliders 6, an electric telescopic rod 19 is fixedly installed on the bottom of the fixed frame 7, and the driving end of the electric telescopic rod 19 is fixedly connected to the bottom of the connecting plate 8, and guide frames 3 are fixedly installed on both sides of the fixed frame 7 on the top of the base plate 1, and guide rollers 4 are rotatably installed on the two guide frames 3.

[0034] The feeding mechanism 25 includes a limiting groove 10, and the limiting groove 10 is opened on the other side of the top of the substrate 1, a threaded rod 14 is rotatably installed inside the limiting groove 10, and the outer wall of the threaded rod 14 is provided with symmetrically distributed left-handed threads and right-handed threads, and the outer wall of the threaded rod 14 is sleeved with symmetrically distributed adjustment blocks 15, and the adjustment blocks 15 are slidably connected with the limiting groove 10, and the tops of the two adjustment blocks 15 are fixedly installed with movable plates 12, and a substrate roll 13 is arranged above the two movable plates 12, and positioning shafts 21 are rotatably installed above the opposite sides of the two movable plates 12, and the positioning shaft 21 is plugged into the two end ports of the substrate roll 13, a second motor 11 is fixedly installed above the front of a movable plate 12, and the driving end of the second motor 11 passes through the front of a movable plate 12 and extends to the back of a movable plate 12 and is fixedly connected to the front end of a positioning shaft 21, and the front of the substrate 1 is located in front of the limiting groove 10 and a driving mechanism is arranged.

[0035] In one embodiment, the outer walls of the two positioning shafts 21 are fixedly mounted with limit plates 20 to limit the printing material roll 13 and prevent the printing material roll 13 from longitudinal displacement during operation.

[0036] In one preferred embodiment, the diameter of the positioning shaft 21 is matched with the inner diameter of the substrate roll 13, and the matching diameters ensure that the positioning shaft 21 can be firmly inserted into the substrate roll 13, thereby providing stronger support and stability.

[0037] In one of the embodiments, a plurality of locking grooves 23 are provided on the outer wall of the positioning shaft 21, and a plurality of locking posts 22 are fixedly installed on the inner walls at both ends of the substrate roll 13, and the positions and quantities of the locking posts 22 correspond to the locking grooves 23, the locking posts 22 are engaged with the locking grooves 23, and the locking grooves 23 on the outer wall of the positioning shaft 21 are aligned with the locking posts 22 inside the ports at both ends of the substrate roll 13, ensuring that the substrate roll 13 can be stably driven to rotate by the drive of the second motor 11.

[0038] In one of the preferred embodiments, the driving mechanism includes a first motor 9, and the first motor 9 is fixedly mounted on the front side of the substrate 1 in front of the limiting groove 10. The driving end of the first motor 9 penetrates the substrate 1 and extends to the inside of the limiting groove 10 and is fixedly connected to the front end of the threaded rod 14, thereby realizing relative or opposite movement of the two movable plates 12 through mechanical drive, thereby facilitating rapid installation and disassembly of the printing material roll 13.

[0039] In one embodiment, a threaded hole matched with the threaded rod 14 is formed on the adjusting block 15 , and the adjusting block 15 is threadedly connected to the threaded rod 14 through the threaded hole formed thereon.

[0040] In one preferred embodiment, the positions of the two guide rollers 4 are both higher than the adjusting roller 5 to ensure stable transportation of the printing material on the device.

[0041] The working principle of the utility model is as follows: the electrical components appearing in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing disclosed power connection technology is not repeated in the text. The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. When in use, one end of the substrate is extended to the top of the two guide rollers 4 and passes through the bottom of the adjusting roller 5 to finally extend to the inside of the printing machine body 2. When printing the substrate, the printing machine body 2 and the second motor 11 are started. The rotation of the driving end of the second motor 11 drives the substrate roll 13 to rotate. The rotation of the substrate roll 13 feeds the substrate. The feeding speed of the substrate is equal to the printing speed of the printing machine body 2. When the tension of the substrate is too high, the pressure of the substrate increases, which will increase the pressure on the adjusting roller 5. The adjusting roller 5 will increase the pressure on the pressure sensor 17 through the trigger block 18. When the pressure is greater than a certain value , the pressure sensor 17 will transmit the signal to the main controller, and the main controller will control the electric telescopic rod 19 to start working. The driving end of the electric telescopic rod 19 drives the connecting plate 8 to move upward, and the connecting plate 8 drives the two sliders 6 to slide upward synchronously on the slide 16. The movement of the slider 6 drives the adjusting roller 5 to move upward through the trigger block 18, so that the tension of the substrate is reduced. On the contrary, when the tension of the substrate is too low, the pressure of the trigger block 18 on the pressure sensor 17 will become smaller and smaller. When it is lower than a certain value, the main controller will control the adjusting roller 5 to move downward to increase the tension of the substrate. During the tension adjustment process of the printing press, the substrate contacts the adjusting roller 5. The adjusting roller 5 will directly monitor the pressure value of the substrate during the conveying process through the pressure sensor 17, and cooperate with the vertical movement of the adjusting roller 5 to adjust the tension of the substrate in real time. This more intuitive monitoring and adjustment method has obvious advantages over the traditional method that relies on spring triggering. First, the pressure sensor 17 provides real-time and accurate pressure data, making the adjustment process more direct and immediate. The data fed back by the pressure sensor 17 is used to dynamically adjust the height of the adjusting roller 5, thereby accurately controlling the tension of the substrate. This method avoids the negative impact of the elastic change of the spring that may occur during long-term use on the tensioning accuracy.

[0042] After the substrate roll 13 is used up, the operation of the equipment is stopped, and the first motor 9 is controlled to start working. The driving end of the first motor 9 drives the threaded rod 14 to rotate. Through the threaded transmission of the left-handed thread and the right-handed thread on the threaded rod 14, and the sliding relationship between the adjusting block 15 and the limiting groove 10, the two adjusting blocks 15 can stably move relative to each other or move oppositely. The movement of the adjusting block 15 drives the movable plate 12 to move, and the movement of the movable plate 12 drives the positioning shaft 21 to move. At this time, the two positioning shafts 21 are controlled to move in opposite directions, and the spacing between the two positioning shafts 21 is gradually enlarged and drawn out from the ports at both ends of the substrate roll 13. After the substrate roll 13 loses the fixing effect of the positioning shaft 21, the substrate roll 13 can be directly removed from between the two movable plates 12, and then a new substrate roll 13 is replaced to place the two movable plates. The two positioning shafts 21 are controlled to move relative to each other between the movable plates 12 and inserted into the ports at both ends of the substrate roll 13 to complete the installation of the substrate roll 13. In the process of docking the substrate roll 13 with the positioning shaft 21, it is necessary to pay attention to the alignment of the positioning grooves 23 on the outer wall of the positioning shaft 21 with the internal positioning columns 22 of the ports at both ends of the substrate roll 13. In this way, the substrate roll 13 can be stably driven to rotate by the drive of the second motor 11. In the process of disassembling and assembling the substrate roll 13, the device relies on the relative movement or opposite movement of the two movable plates 12 to achieve rapid assembly and disassembly of the substrate roll 13, saving a lot of time and labor costs, avoiding the tedious steps of disassembly and assembly of the traditional manually operated fixed structure, making the operation more flexible and fast, and improving people's convenience during operation and the overall processing efficiency of the equipment.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A tensioning mechanism for an environmentally friendly printing press, characterized in that: It includes: A base plate (1), a printing machine body (2) is fixedly mounted on one side of the top of the base plate (1), a feeding mechanism (25) is arranged on the other side of the top of the base plate (1), a fixing frame (7) is fixedly mounted on the top of the base plate (1), a slideway (16) is provided on the front and rear sides of the inside of the fixing frame (7), a slider (6) is slidably mounted on the two slideways (16), mounting grooves (24) are provided on the opposite sides of the two sliders (6), and a trigger block (18) is slidably mounted at the bottom of the inside of the two mounting grooves (24); A pressure sensor (17) is fixedly installed above the interior of the installation groove (24); an adjusting roller (5) is rotatably installed between the two trigger blocks (18); a connecting plate (8) is fixedly installed below the opposite sides of the two sliders (6); an electric telescopic rod (19) is fixedly installed at the bottom of the interior of the fixed frame (7), and the driving end of the electric telescopic rod (19) is fixedly connected to the bottom of the connecting plate (8); a guide frame (3) is fixedly installed on both sides of the top of the base plate (1) located on the fixed frame (7); and guide rollers (4) are rotatably installed on the two guide frames (3).

2. The tensioning mechanism of an environmentally friendly printing press according to claim 1, characterized in that: The feeding mechanism (25) comprises a limiting groove (10), and the limiting groove (10) is opened on the other side of the top of the base plate (1), a threaded rod (14) is rotatably installed inside the limiting groove (10), and the outer wall of the threaded rod (14) is provided with symmetrically distributed left-handed threads and right-handed threads, and the outer wall of the threaded rod (14) is sleeved with symmetrically distributed adjustment blocks (15), and the adjustment blocks (15) are slidably connected to the limiting groove (10), and the tops of the two adjustment blocks (15) are fixedly installed with movable plates (12), and the two movable plates (12) are connected between them. A printing material roll (13) is arranged above the movable plates (12), positioning shafts (21) are rotatably installed above the opposite sides of the two movable plates (12), and the positioning shafts (21) are plugged into the two end ports of the printing material roll (13), a second motor (11) is fixedly installed above the front of one of the movable plates (12), and the driving end of the second motor (11) passes through the front of one of the movable plates (12) and extends to the back of one of the movable plates (12) and is fixedly connected to the front end of one of the positioning shafts (21), and a driving mechanism is arranged on the front of the base plate (1) in front of the limiting groove (10).

3. The tensioning mechanism of an environmentally friendly printing press according to claim 2, characterized in that: Limiting plates (20) are fixedly mounted on the outer walls of the two positioning shafts (21).

4. The tensioning mechanism of an environmentally friendly printing press according to claim 2, characterized in that: The diameter of the positioning shaft (21) is matched to the inner diameter of the printing material roll (13).

5. The tensioning mechanism of an environmentally friendly printing press according to claim 2, characterized in that: A plurality of locking grooves (23) are provided on the outer wall of the positioning shaft (21), and a plurality of locking posts (22) are fixedly mounted on the inner walls at both ends of the substrate roll (13), and the positions and numbers of the locking posts (22) and the locking grooves (23) correspond to each other, and the locking posts (22) are locked with the locking grooves (23).

6. The tensioning mechanism of an environmentally friendly printing press according to claim 2, characterized in that: The driving mechanism comprises a first motor (9), and the first motor (9) is fixedly mounted on the front side of the base plate (1) and located in front of the limiting groove (10), and the driving end of the first motor (9) passes through the base plate (1) and extends to the inside of the limiting groove (10) and is fixedly connected to the front end of the threaded rod (14).

7. The tensioning mechanism of an environmentally friendly printing press according to claim 2, characterized in that: The adjusting block (15) is provided with a threaded hole matched with the threaded rod (14), and the adjusting block (15) is threadedly connected to the threaded rod (14) through the threaded hole provided thereon.

8. The tensioning mechanism of an environmentally friendly printing press according to claim 1, characterized in that: The positions of the two guide rollers (4) are both higher than the adjusting roller (5).

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