Automatic length recording device of rotary press

Abstract

The utility model relates to an automatic length recording device of a rotary press. The automatic length recording device of the rotary press comprises a press body, the press body is provided with a feeding assembly, a winding drum assembly and a transmission assembly, a winding material of the winding drum assembly is connected with the feeding assembly, and the winding material is further connected with the transmission assembly; and the length recording mechanism is arranged on the printing machine main body, and the length recording mechanism is connected with the transmission assembly. The roll material consumption of each order is accurately tracked, the accuracy and efficiency of production management are improved, meanwhile, the production state can be better monitored, the equipment use time is optimized, and the effects of reducing roll material waste, improving order management, enhancing the data recording capacity and improving the overall production benefit and the resource utilization rate are achieved.

Description

Technical Field

[0001] This application relates to the field of roll label printing production technology, and in particular to an automatic length recording device for a rotary printing press. Background Technology

[0002] In the modern printing industry, rotary printing presses are key equipment due to their superior efficiency and output, widely used in the production of newspapers, magazines, and packaging materials. The main advantage of this machine lies in its continuous printing capability, enabling it to complete large-volume printing tasks in a very short time, meeting the demands of rapid production. Its design allows for the continuous feeding of paper rolls to the printing area during operation, thus achieving highly efficient production. Despite the excellent performance of rotary printing presses in terms of production speed and output, some technical challenges remain regarding the use and management of roll stock. Since the printing process requires a continuous supply of paper rolls, effectively managing and optimizing roll stock usage is a critical issue.

[0003] In related technologies, printing presses often estimate the consumption of roll material simply by recording the number of prints.

[0004] However, in related technologies, relying on recording the number of print runs to estimate roll material usage cannot monitor consumables and defective products during machine setup in real time, making it difficult to grasp the actual roll material consumption. This inaccurate estimation not only leads to roll material waste but also affects the accuracy of production management and procurement planning. Roll material waste not only increases production costs but also imposes a burden on the environment. Utility Model Content

[0005] Therefore, it is necessary to provide an automatic length recording device for rotary printing presses that can accurately track and record the length of roll material used, addressing the aforementioned technical problems.

[0006] This application provides an automatic length recording device for a rotary printing press, comprising:

[0007] The main body of the printing press is equipped with a feeding assembly, a roll assembly, and a transmission assembly. The roll of material in the roll assembly is connected to the feeding assembly, and the roll of material is also connected to the transmission assembly.

[0008] The length recording mechanism is mounted on the main body of the printing press and is connected to the transmission assembly.

[0009] In one embodiment, the length recording mechanism includes a mounting bracket and a length recording element. The mounting bracket is mounted on the printing press body, the length recording element is mounted on the mounting bracket, and the length recording element abuts against the transmission assembly.

[0010] In one embodiment, the length recording device is a rotary encoder, which is mounted on a mounting bracket. A recording roller is mounted on the shaft of the rotary encoder, and the outer ring of the recording roller abuts against the transmission assembly.

[0011] In one embodiment, the main body of the printing press includes a supporting base plate, a supporting top plate, a supporting member, and a supporting side plate. The supporting member and the supporting side plate are both mounted on the supporting base plate, and the supporting top plate is mounted on top of the supporting member. The first side of the supporting top plate and the first side of the supporting member abut against the first side of the supporting side plate.

[0012] The mounting bracket is placed on top of the support side plate, the transmission assembly is placed at the end of the support top plate, and the roll assembly is connected to the first side of the support side plate.

[0013] In one embodiment, the printing press body further includes a fixed long plate, the first side of which abuts against the second side of the supporting top plate, and the first side of the fixed long plate and the first side of the supporting side plate abut against the two ends of the transmission assembly, respectively.

[0014] In one embodiment, the transmission assembly includes a transmission support rod and a transmission roller shaft. The transmission roller shaft is sleeved on the transmission support rod. The first end of the transmission support rod is connected to the first side of the support side plate, and the second end of the transmission support rod is connected to the first side of the fixed long plate. The rolled material and the recording roller both abut against the transmission roller shaft.

[0015] In one embodiment, the roll assembly includes a roll support and a roll, the roll support being disposed on a first side of a support side plate, and the roll being sleeved on the roll support.

[0016] In one embodiment, the roll support is provided with two limiting members, the roll cylinder is placed between the two limiting members, and the limiting members are detachably connected to the roll support.

[0017] In one embodiment, the support side plate is also connected to a control panel, which is electrically connected to the rotary encoder.

[0018] In one embodiment, a connecting seat is provided at the top of the supporting side plate, a support column is provided in front of the connecting seat, and a mounting bracket is sleeved on the support column.

[0019] The aforementioned automatic length recording device for rotary printing presses uses a feeding assembly to transfer the roll material from the roll assembly on the main body of the printing press to the printing section when an order needs to be printed. During the transfer, the roll material passes through a transmission assembly, which in turn drives the transmission assembly. Since the length recording mechanism is connected to the transmission assembly, the running transmission assembly drives the length recording mechanism, which records the length of the roll material used. This helps to accurately track the roll material consumption for each order, improving the accuracy and efficiency of production management. At the same time, it can also better monitor the production status, optimize equipment usage time, and achieve the effects of reducing roll material waste, improving order management, enhancing data recording capabilities, and improving overall production efficiency and resource utilization. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an automatic length recording device for a rotary printing press provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a length recording mechanism provided in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10 - Printing press body; 20 - Length recording mechanism; 30 - Control panel;

[0025] 110 - Roller assembly, 120 - Transmission assembly, 130 - Support component;

[0026] 111-Roll drum, 112-Roll support rod, 113-Limiting component;

[0027] 121 - Drive roller shaft;

[0028] 131-Supporting base plate, 132-Supporting top plate, 133-Supporting component, 134-Supporting side plate, 135-Fixing long plate;

[0029] 210-Mounting bracket, 220-Rotary encoder, 230-Recording roller, 240-Connector, 250-Support column. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] In some embodiments, an automatic length recording device for a rotary printing press is provided. The automatic length recording device for a rotary printing press includes a printing press body and a length recording mechanism, the length recording mechanism being mounted on the printing press body. The printing press body includes a feeding assembly, a roll assembly, and a transmission assembly. The roll of material in the roll assembly is connected to the feeding assembly, and the roll is also connected to the transmission assembly, and the transmission assembly is connected to the length recording mechanism.

[0037] After the roll of material is installed in the roll assembly, the end of the roll is connected to the feeding assembly, and the roll passes through the transmission assembly.

[0038] When an order needs to be printed, the roll material is transferred from the roll spool assembly of the printing press body to the printing section via the feeding assembly. During this process, the roll material passes through the transmission assembly, which in turn drives the transmission assembly. Because the length recording mechanism is closely connected to the transmission assembly, the movement of the transmission assembly directly drives the length recording mechanism, thus accurately recording the length of the roll material used.

[0039] In the automatic length recording device of a rotary printing press, when an order needs to be printed, the feeding component transfers the roll material from the roll assembly placed on the main body of the printing press to the printing section. During the transfer, the roll material passes through the transmission component, which in turn drives the transmission component. Since the length recording mechanism is connected to the transmission component, the running transmission component drives the length recording mechanism. The length recording mechanism records the length of the roll material used, which helps to accurately track the roll material consumption of each order, improves the accuracy and efficiency of production management, and also allows for better monitoring of production status, optimization of equipment usage time, and achieves the effects of reducing roll material waste, improving order management, enhancing data recording capabilities, and improving overall production efficiency and resource utilization.

[0040] In some embodiments, the length recording mechanism includes a mounting bracket and a length recording element. The mounting bracket is mounted on the printing press body, and the length recording element is mounted on an inner mounting bracket and connected to a transmission assembly. In one embodiment, the length recording element is a rotary encoder mounted on the mounting bracket. A recording roller is mounted on the shaft of the rotary encoder, and the outer ring of the recording roller abuts against the transmission assembly.

[0041] As the stock material is conveyed by the feeding mechanism, it is transferred from the stock roll assembly to the printing section of the printing press body via the feeding component. During this process, the movement of the stock material depends on the operation of the transmission assembly. The transmission assembly is in close contact with the outer ring of the recording roller on the rotary encoder shaft. When the stock material drives the transmission assembly to rotate, the movement of the transmission assembly also drives the recording roller to rotate. The rotation of the recording roller is directly linked to the rotary encoder, and this connection ensures that every rotation of the recording roller is accurately captured by the rotary encoder. The rotary encoder generates electrical signals by recording the rotation of the roller. These electrical signals represent the actual length of the stock material used. Specifically, sensors within the rotary encoder sense each rotation of the roller and convert these physical movements into corresponding electrical signal outputs. After receiving these electrical signals, the computer system or related data processing equipment can accurately calculate the length of the stock material used, thereby determining the printing quantity for the order.

[0042] In some embodiments, the printing press body includes a support component and a printing section, with a feeding assembly, a roll assembly, a transmission assembly, and the printing section all mounted on the support component. The support component includes a support base plate, a support top plate, a support member, and support side plates. The support member and support side plates are both mounted on the support base plate, and the support top plate is mounted on top of the support member. The first side of the support top plate and the first side of the support member abut against the first side of the support side plate. In one embodiment, the printing press body further includes a fixed long plate, the first side of which abuts against the second side of the support top plate. The first side of the fixed long plate and the first side of the support side plate are respectively connected to both ends of the transmission assembly. In one embodiment, the top of the support side plate is provided with a connecting seat, the connecting seat is provided with a support column, and a mounting bracket is sleeved on the support column.

[0043] Furthermore, the mounting bracket of the length recording mechanism is placed on the top of the support side plate, the transmission assembly is placed at the end of the support top plate, and the roll assembly is connected to the first side of the support side plate.

[0044] In some embodiments, the transmission assembly includes a transmission support rod and a transmission roller shaft, the transmission roller shaft being sleeved on the transmission support rod, and the recording rollers of the roll material and the length recording mechanism respectively abutting against the transmission roller shaft. A first section of the transmission support rod is connected to a first side surface of a support side plate, and a second end of the transmission support rod is connected to a first side surface of a fixed long plate.

[0045] During the feeding of the roll material, the feeding mechanism is responsible for conveying the roll material from the roll drum to the printing section. In this process, the roll material contacts the drive roller shaft, causing the drive roller shaft to rotate around its axis. The rotation of the drive roller shaft directly affects the recording roller of the length recording mechanism, which contacts it. The recording roller is connected to the shaft of the rotary encoder; through this connection, the rotational motion of the recording roller is precisely transmitted to the rotary encoder.

[0046] In some embodiments, the roll assembly includes a roll support and a roll, the roll support being disposed on a first side of a support side plate, and the roll being sleeved on the roll support. In one embodiment, the roll support is provided with two limiting members, the roll is disposed between the two limiting members, and the limiting members and the roll support are detachably connected.

[0047] During the material feeding process, the material is conveyed from the roll to the printing section, passing through the drive roller shaft of the transmission assembly and the upper surface of the support top plate. Under normal circumstances, the material is in close contact with the drive roller shaft, enabling it to effectively drive the roller shaft to rotate, which in turn drives the recording roller of the length recording mechanism to rotate, generating a corresponding electrical signal to monitor the used length of the material. However, when the material on the roll is exhausted, the end of the material separates from the roll body. At this point, the material can no longer maintain close contact with the drive roller shaft, causing the drive roller shaft to stop rotating. Therefore, the rotational speed of the recording roller in the length recording mechanism will gradually decrease and eventually stop rotating.

[0048] The rotational speed of the recording roller is directly related to the supply status of the roll material. When the roll material is depleted, the rotation of the recording roller decreases or even stops. The rotary encoder detects this change and generates a different electrical signal than before. This difference in electrical signal can promptly alert the operator that the roll material is about to run out, allowing them to take measures to replace the roll material and avoid production interruptions. This mechanism not only ensures production continuity but also improves the efficiency of material management during the production process.

[0049] In some embodiments, the support side plate is also connected to a control panel, which is electrically connected to a rotary encoder. The electrical signal generated by the rotary encoder is transmitted to the control panel, which determines the roll length to be used for each printing order based on the electrical signal.

[0050] In one exemplary embodiment, see [reference] Figure 1 , Figure 1 A schematic diagram of the structure of an automatic length recording device for a rotary printing press according to an embodiment of this application is shown. The automatic length recording device for a rotary printing press includes a printing press body 10 and a length recording mechanism 20, which is mounted on the printing press body 10.

[0051] See Figure 2 , Figure 2 A schematic diagram of a length recording mechanism 20 according to an embodiment of this application is shown. The length recording mechanism 20 includes a mounting bracket 210 and a length recording element. The mounting bracket 210 is mounted on the printing press body 10, and the length recording element is mounted on an inner mounting bracket and connected to a transmission assembly 120. The length recording element is a rotary encoder 220, which is mounted on the mounting bracket 210. A recording roller 230 is mounted on the shaft of the rotary encoder 220, and the outer ring of the recording roller 230 abuts against the transmission assembly 120.

[0052] Continue reading Figure 1 and Figure 2The printing press body 10 includes a feeding assembly (not shown), a roll assembly 110, and a transmission assembly 120. The roll of material in the roll assembly 110 is connected to the feeding assembly, and the roll is also connected to the transmission assembly 120. The transmission assembly 120 is connected to the length recording mechanism 20. Furthermore, the printing press body 10 also includes a support member 130 and a printing section. The feeding assembly, roll assembly 110, transmission assembly 120, and printing section are all mounted on the support member 130. The support member 130 includes a support base plate 131, a support top plate 132, a support member 133, and a support side plate 134. The support member 133 and the support side plate 134 are both mounted on the support base plate 131, and the support top plate 132 is mounted on top of the support member 133. The first side of the supporting top plate 132 and the first side of the supporting member 133 abut against the first side of the supporting side plate 134, and the coil assembly 110 is connected to the first side of the supporting side plate 134. The supporting member 130 also includes a fixed long plate 135, the first side of which abuts against the second side of the supporting top plate 132. Meanwhile, the transmission assembly 120 is located at the end of the supporting top plate 132, and the first side of the fixed long plate 135 and the first side of the supporting side plate 134 are respectively connected to both ends of the transmission assembly 120. Furthermore, the mounting bracket 210 of the length recording mechanism 20 is located on the top of the supporting side plate 134, and the top of the supporting side plate 134 is provided with a connecting seat 240, which is equipped with a support column 250. The mounting bracket 210 is sleeved on the support column 250.

[0053] The transmission assembly 120 includes a transmission support rod (not shown) and a transmission roller shaft 121. The first section of the transmission support rod is connected to the first side of the support side plate 134, and the second end of the transmission support rod is connected to the first side of the fixed long plate 135. The transmission roller shaft 121 is sleeved on the transmission support rod, and the recording rollers 230 of the roll material and the length recording mechanism 20 respectively abut against the transmission roller shaft 121.

[0054] The coil assembly 110 includes a coil support 133 and a coil 111. The coil support 133 is mounted on the first side of the support side plate 134, and the coil 111 is sleeved on the coil support 133. The coil support 133 is provided with two limiting members 113, and the coil 111 is positioned between the two limiting members 113. The limiting members 113 and the coil support 133 are detachably connected.

[0055] The support side plate 134 is also connected to a control panel 30, which is electrically connected to the rotary encoder 220. The electrical signal generated by the rotary encoder 220 is transmitted to the control panel 30, which determines the roll length used for each order of printing based on the electrical signal.

[0056] After the new roll 111 is nested in the roll support rod 112 and the roll 111 is fixed by the limiting member 113, the roll head end is connected to the feeding assembly and the roll head end is located in the printing section. At this time, the roll passes through the drive roller 121 and is partially laid flat on the upper surface of the support top plate 132.

[0057] When an order needs to be printed, the feeding assembly feeds the roll of material to the printing section. The roll contacts the drive roller 121, causing it to rotate around its axis. The rotation of the drive roller 121 directly affects the recording roller 230 of the length recording mechanism 20, which contacts it. The recording roller 230 is connected to the shaft of the rotary encoder 220, allowing its rotational motion to be precisely transmitted to the encoder. This connection ensures that each rotation of the recording roller 230 is accurately captured by the encoder. The rotary encoder 220 generates electrical signals by recording the rotation of the roller 230. These electrical signals represent the actual length of the roll material used. Specifically, a sensor within the rotary encoder 220 senses each rotation of the roller and converts this physical motion into a corresponding electrical signal output. The electrical signals generated by the rotary encoder 220 are transmitted to the control panel 30, which determines the roll length used for each order's printing based on these signals.

[0058] Under normal circumstances, the roll material is in close contact with the drive roller shaft 121, enabling it to effectively drive the roller shaft to rotate, which in turn drives the recording roller 230 of the length recording mechanism 20 to rotate, generating a corresponding electrical signal to monitor the used length of the roll material. However, when the roll material on the roll drum 111 is exhausted, the end of the roll material will separate from the drum body of the roll drum 111. At this time, the roll material can no longer be in close contact with the drive roller shaft 121, causing the drive roller shaft 121 to stop rotating. Therefore, the rotation speed of the recording roller 230 in the length recording mechanism 20 will gradually decrease and eventually stop rotating.

[0059] The rotational speed of the recording roller 230 is directly related to the supply status of the roll material. When the roll material is depleted, the rotation of the recording roller 230 decreases or even stops. The rotary encoder 220 detects this change and generates a different electrical signal than before. This difference in electrical signal can promptly alert the operator that the roll material is about to run out, allowing them to take measures to replace the roll material and avoid production interruptions. This mechanism not only ensures the continuity of production but also improves the efficiency of material management during the production process.

[0060] Furthermore, when the rotary encoder 220 fails to generate an electrical signal for one minute, the control system connected to the automatic length recording device of the rotary printing press identifies this state as a machine shutdown. At this time, the control system records the duration of the period without an electrical signal from the rotary encoder 220 and uses this information to determine the equipment's operating status. Through this recording, the system can accurately calculate the equipment's uptime. Uptime is a crucial indicator of production efficiency. By analyzing this data, managers can monitor equipment operation, promptly identify and resolve potential problems, optimize the production process, and ensure production continuity and efficiency. This automatic detection and recording mechanism helps improve the reliability and management level of the production line.

[0061] In the description of this specification, the references to terms such as "some embodiments," "other embodiments," "ideal embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An automatic length recording device for a rotary printing press, characterized in that, include: The main body of the printing machine is equipped with a feeding assembly, a roll assembly and a transmission assembly. The roll of material in the roll assembly is connected to the feeding assembly, and the roll of material is also connected to the transmission assembly. A length recording mechanism is mounted on the printing press body and connected to the transmission assembly.

2. The automatic length recording device for a rotary printing press according to claim 1, characterized in that, The length recording mechanism includes a mounting bracket and a length recording component. The mounting bracket is mounted on the printing press body, and the length recording component is mounted on the mounting bracket and abuts against the transmission assembly.

3. The automatic length recording device for a rotary printing press according to claim 2, characterized in that, The length recording device is a rotary encoder, which is mounted on the mounting bracket. A recording roller is mounted on the rotating shaft of the rotary encoder, and the outer ring of the recording roller abuts against the transmission assembly.

4. The automatic length recording device for a rotary printing press according to claim 3, characterized in that, The main body of the printing press includes a supporting base plate, a supporting top plate, a supporting member, and a supporting side plate. The supporting member and the supporting side plate are both mounted on the supporting base plate, and the supporting top plate is mounted on top of the supporting member. The first side of the supporting top plate and the first side of the supporting member both abut against the first side of the supporting side plate. The mounting bracket is placed on top of the support side plate, the transmission assembly is placed at the end of the support top plate, and the roll assembly is connected to the first side of the support side plate.

5. The automatic length recording device for a rotary printing press according to claim 4, characterized in that, The main body of the printing press also includes a fixed long plate, the first side of which abuts against the second side of the supporting top plate, and the first side of the fixed long plate and the first side of the supporting side plate abut against both ends of the transmission assembly, respectively.

6. The automatic length recording device for a rotary printing press according to claim 5, characterized in that, The transmission assembly includes a transmission support rod and a transmission roller shaft. The transmission roller shaft is sleeved on the transmission support rod. The first end of the transmission support rod is connected to the first side of the support side plate, and the second end of the transmission support rod is connected to the first side of the fixed long plate. The rolled material and the recording roller both abut against the transmission roller shaft.

7. The automatic length recording device for a rotary printing press according to claim 4, characterized in that, The coil assembly includes a coil support and a coil, the coil support is disposed on the first side of the support side plate, and the coil is sleeved on the coil support.

8. The automatic length recording device for a rotary printing press according to claim 7, characterized in that, The coil support is provided with two limiting members, and the coil is placed between the two limiting members. The limiting members are detachably connected to the coil support.

9. The automatic length recording device for a rotary printing press according to claim 4, characterized in that, The support side plate is also connected to a control panel, which is electrically connected to the rotary encoder.

10. The automatic length recording device for a rotary printing press according to claim 4, characterized in that, The top of the support side plate is provided with a connecting seat, and a column is provided in front of the connecting seat. The mounting bracket is sleeved on the column.

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