A raw material replacement device

Abstract

This invention provides a raw material replacement device, belonging to the field of printing technology. The replacement device includes a wire roll, a replacement roll, and a cutting and splicing assembly. The wire roll is formed by winding raw material. The replacement roll is formed by winding a replacement film, the price of which is lower than the price of the raw material. The cutting and splicing assembly is disposed between the wire roll and the replacement roll. The cutting and splicing assembly includes a first driving member and a cutting and splicing mechanism. The first driving member is configured to drive the cutting and splicing mechanism to rotate, causing the cutting and splicing mechanism to move closer to or away from the replacement roll. The material conveying path within the cutting and splicing assembly is located on the side of the cutting and splicing assembly closer to the replacement roll. The cutting and splicing mechanism includes a cutter, a contact roller, and a second driving member. The cutter is located upstream of the contact roller relative to the contact roller on the conveying path. When the contact roller approaches the replacement roll to press the raw material and the replacement film together, the cutter, driven by the second driving member, can cut the raw material to complete the material replacement. This invention can reduce material loss.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to a raw material replacement device. Background Technology

[0002] In roll-to-roll printing, when a single unwinding unit stops, the long material conveying distance within the line means that a significant amount of raw material remaining on the line is easily baked by high temperatures and becomes waste, resulting in substantial resource waste and increased printing production costs. Therefore, reducing material waste in single-unit unwinding equipment is of considerable research value. Utility Model Content

[0003] This invention provides a raw material replacement device, the purpose of which is to reduce the loss of raw materials.

[0004] To achieve the above objectives, this utility model provides a raw material replacement device, comprising:

[0005] Online winding, formed by winding raw materials;

[0006] The displacement roll is formed by winding a displacement membrane, wherein the price of the displacement membrane is lower than the price of the raw material;

[0007] A cutting and splicing assembly is disposed between the online roll and the replacement roll. The cutting and splicing assembly includes a first driving member and a cutting and splicing mechanism. The first driving member is configured to drive the cutting and splicing mechanism to rotate so that the cutting and splicing mechanism moves closer to or away from the replacement roll. The conveying path of the raw material in the cutting and splicing assembly is located on the side of the cutting and splicing assembly closer to the replacement roll. The cutting and splicing mechanism includes a cutter, a template roller, and a second driving member. The cutter is located upstream of the conveying path relative to the template roller. When the template roller moves closer to the replacement roll to press the raw material and the replacement film together, the cutter can cut the raw material under the drive of the second driving member to complete the replacement of the raw material.

[0008] The replacement device includes a floating roller and a control component. The control component includes a linear potentiometer and a position cylinder. The floating roller is disposed between the cutting and splicing component and the online roll. The position cylinder is configured to drive the floating roller to move. The linear potentiometer is disposed at the fulcrum of the position cylinder and the floating roller so that the linear potentiometer can acquire the position information of the floating roller. When the floating roller is held at a preset zero position, the floating roller can maintain the tension of the raw material or the replacement membrane.

[0009] In one embodiment, the replacement device includes a bracket, and both the online roll and the replacement roll are rotatably connected to the bracket. The first driving member includes a first cylinder and a first rotating member. The first cylinder is connected to the bracket, and the piston of the first cylinder is connected to the first rotating member, and the first rotating member is rotatably connected to the bracket, so that the first cylinder can drive the first rotating member to rotate relative to the bracket. The cutting and splicing mechanism is disposed on the first rotating member, so that the cutting and splicing mechanism can approach or move away from the replacement roll. The replacement device includes a linear positioner, which is disposed on the first cylinder to position the cutting and splicing assembly relative to the replacement roll.

[0010] In one embodiment, the second driving member includes a second cylinder and a second rotating member. The second cylinder is connected to the first rotating member. The middle position of the second rotating member is rotatably connected to the first rotating member. The two sides of the second rotating member relative to the middle position are respectively connected to the piston of the second cylinder and the cutter, so that the cutter can approach or move away from the raw material.

[0011] In one embodiment, the cutting and splicing mechanism includes a third cylinder and a third rotating member. The third cylinder is connected to the first rotating member. The middle position of the third rotating member is rotatably connected to the first rotating member. The two sides of the third rotating member relative to the middle position are respectively connected to the piston of the third cylinder and the template roller, so that the template roller can move closer to or further away from the replacement roll.

[0012] In one embodiment, the replacement device includes a plurality of guide rollers, which are spaced apart on the outer periphery of the cutting and splicing assembly to guide the raw material or replacement film.

[0013] In one embodiment, the replacement device includes a tension detector disposed within the cutting and splicing assembly, the tension detector being configured to detect the tension of the raw material or the replacement membrane.

[0014] The above-mentioned solution of this utility model has the following beneficial effects:

[0015] In this embodiment, when the first driving member drives the cutting and splicing mechanism to approach the replacement roll, the printing roller can press the raw material to the replacement roll and adhere it to the replacement film. The cutter located upstream of the printing roller cuts the raw material to complete the replacement of the raw material. This allows a lower-priced replacement film to be used to replace the raw material to withstand high-temperature baking when the relevant equipment stops, reducing the waste and loss of raw materials and helping to reduce production costs.

[0016] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the replacement device structure in one embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the replacement device in one embodiment of the present invention;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a schematic diagram of the cutting and splicing component in one embodiment of the present invention;

[0021] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B.

[0022] [Explanation of Labels in the Attached Image]

[0023] 1. Online roll; 2. Replacement roll; 3. Cutting and splicing assembly; 31. First drive component; 311. First cylinder; 312. First rotating component; 32. Cutting and splicing mechanism; 321. Cutting knife; 322. Guide roller; 323. Second drive component; 3231. Second cylinder; 3232. Second rotating component; 324. Third cylinder; 325. Third rotating component; 4. Floating roller; 5. Support; 6. Guide roller. Detailed Implementation

[0024] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] This application provides a raw material replacement device, which aims to reduce the waste and loss of raw materials.

[0028] Specifically, please refer to Figure 1 The replacement device includes an online roll 1, a replacement roll 2, and a cutting and splicing assembly 3.

[0029] Online roll 1 is formed by winding raw materials. In the roll-to-roll production process, the raw materials in online roll 1 need to be pulled out for production.

[0030] Displacement roll 2 is formed by winding a displacement membrane. When the relevant equipment is shut down, the displacement membrane can replace the raw material to withstand high-temperature baking. The price of the displacement membrane is lower than that of the raw material, thereby reducing waste and loss of raw materials and thus reducing production costs. For example, the displacement membrane can be waste membrane generated during production, or it can be other materials that are cheaper than the raw material.

[0031] The cutting and splicing assembly 3 is positioned between the online roll 1 and the replacement roll 2. For example, when there is no need to switch the raw material to the replacement membrane, the cutting and splicing assembly 3 can separate the online roll 1 and the replacement roll 2 without affecting the conveying of the raw material; when the relevant equipment is shut down, the cutting and splicing assembly 3 can cut the conveying raw material and replace it with the replacement membrane for output.

[0032] Please see Figure 2 The cutting and splicing assembly 3 includes a first driving member 31 and a cutting and splicing mechanism 32. The first driving member 31 is configured to drive the cutting and splicing mechanism 32 to rotate, so that the cutting and splicing mechanism 32 moves closer to or further away from the replacement roll 2. By moving the cutting and splicing mechanism 32 closer to or further away from the replacement roll 2, the switching between the raw material and the replacement membrane is completed.

[0033] Please see Figure 2 , Figure 2 The dashed curve in the middle represents the material transport path within the replacement device. The material transport path within the cutting and splicing assembly 3, specifically near assembly 3, is located on the side of assembly 3 closest to replacement roll 2. Please refer to [link / reference]. Figure 3 , Figure 4 and Figure 5The cutting and splicing mechanism 32 includes a cutter 321, a template roller 322, and a second drive member 323. The cutter 321 is located upstream of the template roller 322 in the conveying path, so that the cutter 321 can cut the raw material upstream of the template roller 322. When the template roller 322 approaches the replacement roll 2 to press the raw material and the replacement film together, the cutter 321 can rotate under the drive of the second drive member 323 to cut the raw material, thereby replacing the raw material with the replacement film for output, thus completing the replacement of the raw material. For example, when the raw material and the replacement film are pressed together, they can be manually bonded together.

[0034] In this embodiment, when the first driving member 31 drives the cutting and splicing mechanism 32 to approach the replacement roll 2, the printing roller 322 can press the raw material to the replacement roll 2 and adhere it to the replacement film. The cutter 321 located upstream of the printing roller 322 cuts the raw material to complete the replacement of the raw material. This allows a lower-priced replacement film to be used to replace the raw material when the relevant equipment stops, reducing the waste and loss of raw materials and helping to reduce production costs.

[0035] In one embodiment, please refer to Figure 2 The replacement device includes a floating roller 4, which is disposed between the cutting assembly 3 and the roll 1. The floating roller 4 is configured to maintain the tension of the raw material or replacement film.

[0036] It should be noted that during the replacement process of the raw material and the replacement membrane, the tension of both the raw material and the replacement membrane will change significantly. Therefore, the key to replacement lies in the stable control of the tension of the raw material and the replacement membrane. It should be noted that the floating roller 4 maintains the tension stability of the raw material on the roll 1. The replacement membrane is waste material and does not have high tension requirements; it only needs to maintain tension when it is subsequently reintroduced onto the roll 1. Tension control refers to the control of the tension at both ends of the raw material during production. It is widely used in the production and processing of rolled raw materials, such as lamination, flattening, and stretching processes, including slitting, rewinding, laminating, and printing of raw materials. Tension control is a crucial link in stable production. The control effect directly affects production efficiency. Unstable tension can easily lead to problems such as wrinkling, loose winding, film deformation, and breakage due to excessive winding. The floating roller 4 can act as a material storage structure. Utilizing its own swing amplitude, i.e., by changing the position of the floating roller 4, it has a good absorption and buffering effect on large tension changes, reducing the impact of tension variations on replacement.

[0037] For example, the control system of the floating roller 4 adopts a pneumatic structure, including a PLC (Programmable Logic Controller), a linear potentiometer, and a position cylinder. The position cylinder is used to drive the floating roller 4 to move. The linear potentiometer is set at the fulcrum of the position cylinder, moving linearly along with the floating roller 4, and the position data of the floating roller 4 is collected in real time. When the tension is stable, the tension of the replacement membrane or raw material and the force of the position cylinder remain balanced, and the floating roller 4 needs to always remain in the middle position (initialized set position, i.e., the defined zero position). When the tension of the replacement membrane or raw material changes, causing the floating roller 4 to swing back and forth, the control system of the floating roller 4 needs to output a corresponding signal to control the operating state of the position cylinder according to the signal fed back by the linear potentiometer, so that the floating roller 4 is dynamically maintained at the set zero position.

[0038] For example, the tension control of the floating roller 4 requires converting the force of the position cylinder into an equivalent tension of the replacement film or raw material (e.g., 1 MPa air pressure equals 20 kg tension) so that the operator can intuitively set the tension to match the actual working environment. Setting the floating tension means setting the force of the position cylinder, while the linear potentiometer is the position signal of the position cylinder; the two need to be distinguished in control.

[0039] For example, the set position of the floating roller 4 is converted into its actual position by a program, and the position signal is sent to the control system. IN1 is defined as the voltage value when the floating roller 4 is at its lowest position, IN2 is defined as the voltage value when the floating roller 4 is at its highest position, IN3 is defined as the engineered value of the floating roller 4 at its maximum position, IN4 is defined as the engineered value of the floating roller 4 at its minimum position, IN5 is defined as the program-converted value, and IN6 is defined as the engineered value of the actual position. The four actual engineered values ​​IN1-IN4 are calibrated and proportionally converted into the current actual position value of the floating roller 4.

[0040] For example, in PID (Proportional Integral Derivative) calculation, Setpoint is the set position of floating roller 4. The farthest position of floating roller 4 is 100%, the zero position of floating roller 4 is generally set to the middle position, so it is set to 50%, and the lowest position of floating roller 4 is 0%. Input is the real-time position of floating roller 4, ManualEnable is the start point for PID momentum calculation. After the start signal is input, PID calculation starts. Reset is for fault reset, and Output is the output value after implementation. The PID calculation output is a percentage signal. The tension control of the replacement membrane and raw material by floating roller 4 is essentially position control. The variables of various parameters can be associated with the variables in the program to improve the program's scalability. If multi-segment PID control is required, the various PID parameters can be changed as needed during debugging. At the same time, when debugging the PID function, it is necessary to adjust the parameters for different processes. For example, tension fluctuations caused during the replacement process require adjustment of the corresponding parameters to reduce the impact of tension fluctuations.

[0041] For example, after the replacement membrane has replaced the raw material, because the tensile properties of the replacement membrane are significantly different from those of the raw material, and because the angular velocity increases as the diameter of the replacement roll 2 decreases, it is necessary to make a taper-adaptive adjustment to the tension of the replacement membrane to prevent it from being stretched too tightly and deforming into a narrow shape. For example, an inverse proportional taper can be set so that the set tension decreases as the diameter of the replacement roll 2 decreases.

[0042] In one embodiment, please refer to Figure 1 and Figure 2 The replacement device includes a bracket 5. The bracket 5, as the main load-bearing structure, provides mounting positions for the remaining components of the replacement device. Both the online roll 1 and the replacement roll 2 are rotatably connected to the bracket 5. (See also...) Figure 2 , Figure 3 , Figure 4 and Figure 5The first driving component 31 includes a first cylinder 311 and a first rotating component 312. The first cylinder 311 is a linearly telescopic driving structure. The first cylinder 311 is connected to the bracket 5, for example, in a fixed connection. The piston of the first cylinder 311 is connected to the first rotating component 312, and the first rotating component 312 is rotatably connected to the bracket 5, so that the first cylinder 311 can drive the first rotating component 312 to rotate relative to the bracket 5. The first rotating component 312 can be a plate. The cutting and splicing mechanism 32 is disposed on the first rotating component 312, so that the cutting and splicing mechanism 32 can approach or move away from the replacement roll 2, thereby allowing the cutter 321 and the guide roller to approach or move away from the replacement roll 2 to complete the replacement of raw materials. The structural form of the first cylinder 311 and the rotatable first rotating component 312 makes the various structures in the replacement device more compactly arranged. The replacement device includes a linear positioner, which is disposed on the first cylinder 311 to position the cutting and splicing component 3 relative to the replacement roll 2. For example, the linear positioner can detect the stretching distance of the first cylinder 311 to more accurately detect the relative position of the first rotating member 312, and then detect the relative position of the cutting and splicing structure.

[0043] In one embodiment, please refer to Figure 3 and Figure 5 The second driving component 323 includes a second cylinder 3231 and a second rotating component 3232. The second cylinder 3231 is a driving structure capable of linear extension and retraction. The second cylinder 3231 is connected to the first rotating component 312, for example, in a fixed connection. The middle position of the second rotating component 3232 is rotatably connected to the first rotating component 312, i.e., as shown... Figure 3 and Figure 5 As shown, the second rotating member 3232 can rotate relative to the first rotating member 312 with its own middle position as the rotation center. The two sides of the second rotating member 3232 relative to the middle position are respectively connected to the piston of the second cylinder 3231 and the cutter 321. When the second cylinder 3231 drives one side of the second rotating member 3232 to move back and forth, the cutter 321 can move closer to or further away from the raw material, thereby enabling the cutter 321 to cut the raw material during the material replacement process. The structural form of the second cylinder 3231 and the rotatable second rotating member 3232 allows the cutting and splicing mechanism 32 to be arranged more compactly.

[0044] In one embodiment, the cutting and splicing mechanism 32 includes a third cylinder 324 and a third rotating member 325. The third cylinder 324 is a drive structure capable of linear extension and retraction. The third cylinder 324 is connected to the first rotating member 312, for example, in a fixed connection. The middle position of the third rotating member 325 is rotatably connected to the first rotating member 312, i.e., as shown... Figure 3 and Figure 5As shown, the third rotating member 325 can rotate relative to the first rotating member 312 with its own center of rotation as the rotation center. For example, the second rotating member 3232 and the third rotating member 325 can be located on opposite sides of the first rotating member 312, and the third cylinder 324 and the second cylinder 3231 can be arranged in parallel. The two sides of the third rotating member 325 relative to the center position are respectively connected to the piston of the third cylinder 324 and the guide roller 322. When the third cylinder 324 drives one side of the third rotating member 325 to move back and forth, the guide roller 322 can move closer to or away from the replacement roll 2, so that during the replacement of raw materials, the guide roller can press the raw materials tightly against the replacement film, thereby completing the replacement of raw materials. The structural form of the third cylinder 324 and the rotatable third rotating member 325 allows the cutting and splicing mechanism 32 to be arranged more compactly.

[0045] In one embodiment, please refer to Figure 1 and Figure 2 The replacement device includes multiple guide rollers 6, which are spaced apart on the outer periphery of the cutting and splicing assembly 3 to guide the raw material or replacement film, for example, by changing the conveying angle and position of the raw material or replacement film so that the raw material or replacement film can be conveyed along a preset path.

[0046] In one embodiment, the replacement device includes a tension detector. The tension detector is disposed within the cutting and splicing assembly 3 and is configured to detect the tension of the raw material or replacement membrane, so that the floating roller 4 can adjust its position accordingly based on the tension changes detected by the tension detector, which helps to maintain the stability of the tension of the raw material or replacement membrane.

[0047] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A raw material replacement device characterized by comprising: include: Online winding, formed by winding raw materials; The displacement roll is formed by winding a displacement membrane, wherein the price of the displacement membrane is lower than the price of the raw material; A cutting and splicing assembly is disposed between the online roll and the replacement roll. The cutting and splicing assembly includes a first driving member and a cutting and splicing mechanism. The first driving member is configured to drive the cutting and splicing mechanism to rotate so that the cutting and splicing mechanism moves closer to or away from the replacement roll. The conveying path of the raw material in the cutting and splicing assembly is located on the side of the cutting and splicing assembly closer to the replacement roll. The cutting and splicing mechanism includes a cutter, a template roller, and a second driving member. The cutter is located upstream of the conveying path relative to the template roller. When the template roller moves close to the replacement roll and presses the raw material and the replacement film together, the cutter can cut the raw material under the drive of the second driving member to complete the replacement of the raw material. The replacement device includes a floating roller and a control component. The control component includes a linear potentiometer and a position cylinder. The floating roller is disposed between the cutting and splicing component and the online roll. The position cylinder is configured to drive the floating roller to move. The linear potentiometer is disposed at the fulcrum of the position cylinder and the floating roller so that the linear potentiometer can acquire the position information of the floating roller. When the floating roller is held at a preset zero position, the floating roller can maintain the tension of the raw material or the replacement membrane.

2. The raw material replacement device according to claim 1, characterized by The replacement device includes a bracket, and both the online roll and the replacement roll are rotatably connected to the bracket. The first driving component includes a first cylinder and a first rotating component. The first cylinder is connected to the bracket, and the piston of the first cylinder is connected to the first rotating component, and the first rotating component is rotatably connected to the bracket, so that the first cylinder can drive the first rotating component to rotate relative to the bracket. The cutting and splicing mechanism is disposed on the first rotating component, so that the cutting and splicing mechanism can move closer to or further away from the replacement roll. The replacement device includes a linear positioner, which is disposed on the first cylinder to position the cutting and splicing component relative to the replacement roll.

3. The raw material replacement device according to claim 2, characterized by The second driving component includes a second cylinder and a second rotating component. The second cylinder is connected to the first rotating component. The middle position of the second rotating component is rotatably connected to the first rotating component. The two sides of the second rotating component relative to the middle position are respectively connected to the piston of the second cylinder and the cutter, so that the cutter can approach or move away from the raw material.

4. The raw material replacement device according to claim 2, characterized by The cutting and splicing mechanism includes a third cylinder and a third rotating component. The third cylinder is connected to the first rotating component. The middle position of the third rotating component is rotatably connected to the first rotating component. The two sides of the third rotating component relative to the middle position are respectively connected to the piston of the third cylinder and the template roller, so that the template roller can move closer to or further away from the replacement roll.

5. The feedstock displacement device of claim 1, wherein The replacement device includes multiple guide rollers, which are spaced apart on the outer periphery of the cutting and splicing assembly to guide the raw material or replacement film.

6. The feedstock displacement device of claim 1, wherein The replacement device includes a tension detector disposed within the splicing assembly, the tension detector configured to detect a tension of the stock material or the replacement film.

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