A precision cutting adhesive label slitting device

Abstract

The utility model discloses a kind of precision cutting's self-adhesive label slitting equipment, belong to label slitting technical field, including base, fixed plate is fixedly connected with the base upper end, the base upper end is fixedly connected with detachable plate by bolt, fixed assembly is fixedly connected with the bearing inside detachable plate, cutting mechanism is fixedly connected with the base upper end, collection box is placed with the base upper end, it can be accurate to limit reel by fixed assembly, can effectively prevent label from appearing axial deviation in rotation process;By integrating feeding, cutting, three major core processes of blanking, can greatly improve production efficiency, motor of feeding assembly provides power for blanking assembly simultaneously by transmission belt, make feeding speed and blanking rhythm keep synchronization, avoid the label accumulation or conveying interruption caused by feeding and blanking out of synchronization, can quickly remove and collect label slitting completed, effectively avoid the equipment precision decline caused by label accumulation.

Description

Technical Field

[0001] This utility model relates to the field of label cutting technology, and more specifically, to a self-adhesive label cutting device that can be precisely cut. Background Technology

[0002] Self-adhesive labels, also known as pressure-sensitive labels, are composite materials made of paper, film, or special materials as the face stock, coated with adhesive on the back, and with silicone-coated release paper as the backing paper. Due to the variety of coating technologies, self-adhesive materials come in different grades. The development trend is from traditional roller coating and blade coating to high-pressure casting coating, in order to maximize the uniformity and drying of the coating, avoid the formation of bubbles and pinholes, and ensure coating quality. However, casting coating technology is not yet mature in China, and traditional roller coating is mainly used domestically.

[0003] In the field of self-adhesive label production and processing, the slitting process is one of the key links that determines the quality of the finished label and the production efficiency. Its core requirement is to achieve stable delivery, precise cutting and orderly collection of rolls of self-adhesive labels in order to meet the standardized requirements of subsequent packaging, printing and other processes.

[0004] Chinese Patent Announcement No. CN 217148050 U discloses a self-adhesive label roll slitting machine. This solution employs an independent dual-drive guide transmission cylinder, whose rotation is reliable and fast. The overall self-adhesive label roll transmission structure exhibits good speed and reliability in conveying the self-adhesive label rolls to be slit. By setting an adjustable self-adhesive label roll slitting structure, and with the self-adhesive label roll slitting blade featuring a flexible, liftable design, the slitting structure can effectively cooperate and cut the self-adhesive label rolls, minimizing the presence of uncut segments after slitting. The overall slitting effect is good. However, the following drawbacks exist in practical implementation: it is inconvenient to unload and collect the slit labels during the slitting process; excessive label accumulation can affect the slitting accuracy of the equipment and impact operation.

[0005] Therefore, a self-adhesive label slitting device capable of precise cutting is proposed to address the above problems. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] To address the problems existing in the prior art, the purpose of this utility model is to provide a self-adhesive label slitting device that can accurately cut labels, enabling timely collection of the slit labels and avoiding affecting the device's accuracy.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A precision self-adhesive label slitting device includes a base, a fixing plate fixedly connected to the upper end of the base, a detachable plate fixedly connected to the upper end of the base by bolts, a fixing assembly fixedly connected inside the detachable plate by bearings, a cutting mechanism fixedly connected to the upper end of the base, a collection box placed on the upper end of the base, the cutting mechanism including a support base, a photoelectric sensor embedded in the upper end of the support base, a feeding assembly fixedly connected to the upper end of the support base, a protective shell fixedly connected to one side of the feeding assembly, a cutting assembly fixedly connected to the upper end of the support base, and a feeding assembly rotatably connected inside the cutting assembly.

[0011] Furthermore, the feeding assembly includes a motor, which is fixedly mounted on one side of the protective shell. The output end of the motor is fixedly connected to a conveying roller via a coupling. An encoder is mounted on one end of the conveying roller. A gear is fixedly connected to the outer surface of the conveying roller, and a drive wheel is fixedly connected to the outer surface of the conveying roller. A transmission belt is meshed with the outer surface of the drive wheel. A gear is meshed with the outer surface of the gear and another conveying roller is fixedly connected to the inner surface of the gear. The outer surfaces of the two conveying rollers are rotatably connected to two connecting plates, both of which are fixedly mounted on the upper end of the support base. The protective shell is fixedly mounted on the side of the connecting plate near the motor.

[0012] Furthermore, the cutting assembly includes a U-shaped frame, which is fixedly installed on the upper end of the support base. Two slide rails are fixedly connected to the inner cavity of the U-shaped frame. A hydraulic cylinder is fixedly connected to the upper end of the U-shaped frame. A cutter is fixedly connected to the output end of the hydraulic cylinder. Slider blocks are fixedly connected to both sides of the cutter. The inner surfaces of the two sliders are slidably connected to the outer surfaces of the two slide rails, respectively. A limit roller is fixedly connected to the inner surface of the U-shaped frame.

[0013] Furthermore, the feeding assembly includes a rotating rod, a driven wheel is fixedly connected to the outer surface of the rotating rod, a connecting pipe is fixedly connected to the outer surface of the rotating rod, and a silicone flexible plate is fixedly connected to the inner surface of the connecting pipe.

[0014] Furthermore, the fixing component includes an installation roller, which is fixedly installed inside the fixing plate by bearings, and is slidably installed inside the detachable plate by bearings. The two threads on the outer surface of the installation roller are the same but opposite in direction. Two limiting sleeves are threadedly connected to the outer surface of the installation roller. A roller is slidably connected to the outer surface of the installation roller, and a label body is wound around the outer surface of the roller.

[0015] Furthermore, the outer surface of the driven wheel is meshed with the inner surface of the transmission belt, and the rotating rod is rotatably mounted on the inner surface of the U-shaped frame.

[0016] 3. Beneficial effects

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] (1) This solution significantly improves the cutting accuracy of self-adhesive labels through multi-dimensional structural optimization. The fixing component can accurately limit the roll, which can effectively prevent the label roll from shifting axially during rotation. The feeding component can stably transport the labels. The cutting component can ensure the linearity and timeliness of the cutting action of the cutter. With the accuracy guarantee measures of multiple links, the quality problems such as size deviation, rough edges, and wrinkles that occur during the label cutting process can be effectively avoided, which significantly improves the quality consistency of the finished labels and meets the high-precision use requirements of downstream industries.

[0019] (2) This solution can significantly improve production efficiency by integrating the three core processes of feeding, cutting and unloading. The motor of the feeding component provides power to the unloading component through the transmission belt, so that the feeding speed and unloading rhythm are synchronized. This avoids label accumulation or conveying interruption caused by asynchronous feeding and unloading. It can quickly remove and collect the cut labels, effectively avoiding the decrease in equipment accuracy caused by label accumulation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0022] Figure 3 This is a schematic diagram of the cutting mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the feeding component of this utility model;

[0024] Figure 5 This is a schematic diagram of the cutting component of this utility model;

[0025] Figure 6 This is a schematic diagram of the feeding assembly of this utility model;

[0026] Figure 7 This is a schematic diagram of the fixing component of this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Base; 2. Fixing plate; 3. Detachable plate; 4. Fixing assembly; 41. Mounting roller; 42. Limiting sleeve; 43. Roller; 44. Label body; 5. Cutting mechanism; 51. Support base; 52. Feeding assembly; 521. Motor; 522. Conveying roller; 523. Gear 1; 524. Drive wheel; 525. Transmission belt; 526. Gear 2; 527. Connecting plate; 53. Protective shell; 54. Unloading assembly; 541. Rotating rod; 542. Driven wheel; 543. Connecting pipe; 544. Silicone flexible sheet; 55. Cutting assembly; 551. U-shaped frame; 552. Slide rail; 553. Hydraulic cylinder; 554. Cutter; 555. Slider; 556. Limiting roller; 6. Collection box. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. 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.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1:

[0033] Please see Figure 1 - Figure 6A precision self-adhesive label slitting device includes a base 1, a fixing plate 2 fixedly connected to the upper end of the base 1, a detachable plate 3 fixedly connected to the upper end of the base 1 by bolts, a fixing component 4 fixedly connected inside the detachable plate 3 by bearings, a cutting mechanism 5 fixedly connected to the upper end of the base 1, a collection box 6 placed on the upper end of the base 1, the cutting mechanism 5 includes a support base 51, a photoelectric sensor embedded in the upper end of the support base 51, a feeding component 52 fixedly connected to the upper end of the support base 51, a protective shell 53 fixedly connected to one side of the feeding component 52, a cutting component 55 fixedly connected to the upper end of the support base 51, and a feeding component 54 rotatably connected inside the cutting component 55.

[0034] The photoelectric sensor is selected from the Keyence IV2 series and is installed above the support base 51, between the feeding assembly 52 and the cutting assembly 55. It is used to detect the edge position and conveying status of the label in real time. It can emit a laser beam to illuminate the label surface, receive the reflected light signal and convert it into an electrical signal to feed back to the PLC controller. When the label is deviated during the conveying process, the intensity or position of the reflected light signal changes, and the sensor immediately sends an offset signal to the PLC controller, which can effectively prevent the label from deviating from the cutting position due to offset.

[0035] The feeding assembly 52 includes a motor 521, which is fixedly installed on one side of the protective shell 53. The output end of the motor 521 is fixedly connected to a conveying roller 522 via a coupling. An encoder is installed on one end of the conveying roller 522. A gear 523 is fixedly connected to the outer surface of the conveying roller 522. A drive wheel 524 is fixedly connected to the outer surface of the conveying roller 522. A transmission belt 525 is meshed with the outer surface of the drive wheel 524. A gear 526 is meshed with the outer surface of the gear 523. Another conveying roller 522 is fixedly connected to the inner surface of the gear 526. Two connecting plates 527 are rotatably connected to the outer surfaces of the two conveying rollers 522. Both connecting plates 527 are fixedly installed on the upper end of the support base 51. The protective shell 53 is fixedly installed on the side of the connecting plate 527 near the motor 521.

[0036] The motor 521 is a Panasonic A6 series servo motor, which can provide power to the feeding assembly 52 and drive the conveyor roller 522 to rotate to achieve stable label conveying. The output speed can be precisely adjusted by the servo driver to control the label conveying speed and ensure that the label conveying length matches the preset cutting length. It supports forward and reverse operation, and with the gear transmission structure, the two conveyor rollers 522 can rotate synchronously in opposite directions to ensure that the labels do not shift or wrinkle during the conveying process, laying the foundation for subsequent precise cutting.

[0037] The encoder uses the Omron E6B2 series and is installed at one end of the conveyor roller 522. It rotates synchronously with the conveyor roller 522 to accurately measure the conveying length of the label. It outputs a pulse signal for each rotation. After the pulse signal is transmitted to the PLC controller, the controller calculates the actual conveying length of the label based on the number of pulses and the circumference of the conveyor roller 522. When the calculated conveying length reaches the preset cutting length, the controller immediately sends a cutting command to the hydraulic cylinder 553 to control the cutter 554 to move, ensuring accurate cutting position and avoiding problems of cutting too long or too short.

[0038] The cutting assembly 55 includes a U-shaped frame 551, which is fixedly installed on the upper end of the support base 51. Two slide rails 552 are fixedly connected to the inner cavity of the U-shaped frame 551. A hydraulic cylinder 553 is fixedly connected to the upper end of the U-shaped frame 551. A cutter 554 is fixedly connected to the output end of the hydraulic cylinder 553. Slider 555 is fixedly connected to both sides of the cutter 554. The inner surfaces of the two sliders 555 are slidably connected to the outer surfaces of the two slide rails 552 respectively. A limit roller 556 is fixedly connected to the inner surface of the U-shaped frame 551.

[0039] The hydraulic cylinder 553 is an HSG series engineering hydraulic cylinder, which can drive the cutter 554 to move up and down in a straight line with the cooperation of the slider 555 and the slide rail 552 to complete the slitting operation.

[0040] The feeding assembly 54 includes a rotating rod 541, which is rotatably mounted on the inner surface of the U-shaped frame 551. A driven wheel 542 is fixedly connected to the outer surface of the rotating rod 541. The outer surface of the driven wheel 542 meshes with the inner surface of the transmission belt 525. A connecting pipe 543 is fixedly connected to the outer surface of the rotating rod 541. A silicone flexible plate 544 is fixedly connected to the inner surface of the connecting pipe 543.

[0041] This solution uses a motor 521 that rotates at a preset speed. The motor 521 drives the conveyor roller 522 to rotate, and the two conveyor rollers 522 rotate synchronously in opposite directions, smoothly unwinding the label body 44 from the roll 43 and conveying it forward. At this time, the photoelectric sensor installed on the support base 51 detects the edge position of the label body 44 in real time and monitors the label's conveying path to prevent deviation. Simultaneously, the drive wheel 524 on the conveyor roller 522 drives the driven wheel 542 of the unloading assembly 54 to rotate via the transmission belt 525. The driven wheel 542 drives the rotating rod 541 to rotate synchronously, and the silicone soft plate 544 on the rotating rod 541 rotates accordingly, preparing for the subsequent label unloading, thus achieving coordinated and synchronous feeding and unloading actions.

[0042] When the label body 44 is conveyed to the cutting assembly 55, the limiting roller 556 presses down on the label body 44 to limit it, preventing the label from lifting or shifting during the cutting process. The controller detects the conveying length of the label in real time through the encoder. The encoder is installed at one end of the conveying roller 522 and converts the number of rotations of the conveying roller 522 into an electrical signal and feeds it back to the controller through synchronous rotation with the conveying roller 522. The controller calculates the conveying distance of the label according to the preset cutting length.

[0043] When the label conveying distance reaches the preset cutting length, the controller sends a signal to the hydraulic cylinder 553 to start it, causing the piston rod of the hydraulic cylinder 553 to extend downward, driving the cutter 554 to move downward along the slide rail 552. Under the guidance of the slider 555 and the slide rail 552, the cutter 554 maintains linear motion and accurately cuts the label body 44. After the cutting is completed, the controller sends a signal to the hydraulic cylinder 553 again, causing the piston rod of the hydraulic cylinder 553 to retract upward, driving the cutter 554 to reset and wait for the next cutting command. This cycle repeats to achieve continuous and accurate cutting of the label.

[0044] After cutting, the finished labels are continuously conveyed to the unloading component 54 by the feeding component 52. At this time, the rotating rod 541 rotates continuously under the drive of the transmission belt 525, and the silicone soft plate 544 on the rotating rod 541 rotates accordingly. The silicone soft plate 544 gently contacts the surface of the finished label, peeling the finished label off the conveying path, so that the finished label falls naturally into the collection box 6 at the top of the base 1 under the action of gravity. Since the silicone soft plate 544 has good elasticity and wear resistance, it avoids damage to the label surface and effectively prevents the label from adhering to the equipment due to its own stickiness or static electricity, ensuring the smoothness of the label falling process.

[0045] Please see Figure 1 and Figure 7 The fixing component 4 includes an installation roller 41, which is fixedly installed inside the fixing plate 2 by bearings. The installation roller 41 is slidably installed inside the detachable plate 3 by bearings. The two threads on the outer surface of the installation roller 41 are the same but opposite in direction. The outer surface of the installation roller 41 is threadedly connected to two limiting sleeves 42. The outer surface of the installation roller 41 is slidably connected to a roller 43. The outer surface of the roller 43 is wound with a label body 44.

[0046] This solution involves unscrewing the bolts connecting the detachable plate 3 to the base 1 to remove the detachable plate 3 from the base 1. Then, the roll 43 with the label body 44 wound around it is slidably installed onto the outer surface of the mounting roller 41. Depending on the length of the roll 43, the two limiting sleeves 42 are rotated. Since the outer surface of the mounting roller 41 has a bidirectional thread, the two limiting sleeves 42 will move towards the middle when they are screwed until they are in close contact with both ends of the roll 43, thereby limiting and fixing the roll 43 and preventing axial displacement of the roll 43 during rotation. Subsequently, the detachable plate 3 is reinstalled on the upper end of the base 1 with bolts, so that the mounting roller 41 is connected to the detachable plate 3 through the bearing, thus completing the installation of the label roll.

[0047] It should be noted that the motor 521, PLC controller, touch screen, photoelectric sensor, and encoder in this utility model are powered by a power supply, and the motor 521, photoelectric sensor, and encoder are controlled by the controller and touch screen.

[0048] The PLC controller selected is the Siemens S7-200SMART series controller, which serves as the core control hub of the equipment, responsible for receiving and processing various signals and outputting control commands; the touch screen selected is the Weintek TK6071IP, which serves as the interface between the operator and the equipment, enabling parameter setting, status monitoring and operation control, and can display the real-time operating status of various components of the equipment.

[0049] It should be noted that the specific installation methods, circuit connection methods, oil circuit connection methods, and control methods of the hydraulic cylinder 553, motor 521, touch screen, photoelectric sensor, and encoder in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0050] Working principle:

[0051] First, the operator unscrews the bolts connecting the detachable plate 3 to the base 1 and removes the detachable plate 3 from the base 1. Then, the roll 43 with the label body 44 wound on it is slidably installed onto the outer surface of the mounting roller 41. According to the length of the roll 43, the two limiting sleeves 42 are rotated. Since the outer surface of the mounting roller 41 has a bidirectional thread, the two limiting sleeves 42 will move towards the middle when they are screwed until they are in close contact with both ends of the roll 43, thereby limiting and fixing the roll 43 and preventing the roll 43 from shifting axially during rotation. Then, the detachable plate 3 is reinstalled on the upper end of the base 1 with bolts, so that the mounting roller 41 is connected to the detachable plate 3 through the bearing, thus completing the installation of the label roll.

[0052] Then, manually pull the free end of the label body 44, passing it between the two conveyor rollers 522, and then under the limiting roller 556 until the front end of the label body 44 extends to below the cutter 554. At this time, the operator starts the automatic cutting mode through the touch screen. The controller sends a start signal to the motor 521. After receiving the signal, the servo driver controls the motor 521 to rotate at the preset speed. The motor 521 drives the conveyor rollers 522 to rotate. The two conveyor rollers 522 rotate synchronously in opposite directions, smoothly unwinding the label body 44 from the roll 43 and conveying it forward. At this time, the photoelectric sensor installed on the support base 51 detects the edge position of the label body 44 in real time and monitors the label conveying path to prevent deviation. At the same time, the drive wheel 524 on the conveyor roller 522 drives the driven wheel 542 of the unloading assembly 54 to rotate through the transmission belt 525. The driven wheel 542 drives the rotating rod 541 to rotate synchronously. The silicone soft plate 544 on the rotating rod 541 rotates accordingly, preparing for the subsequent label unloading, realizing the coordinated synchronization of feeding and unloading actions.

[0053] When the label body 44 is conveyed to the cutting assembly 55, the limiting roller 556 presses down on the label body 44 to limit it, preventing the label from lifting or shifting during the cutting process. The controller detects the conveying length of the label in real time through the encoder. The encoder is installed at one end of the conveying roller 522 and converts the number of rotations of the conveying roller 522 into an electrical signal and feeds it back to the controller through synchronous rotation with the conveying roller 522. The controller calculates the conveying distance of the label according to the preset cutting length.

[0054] When the label conveying distance reaches the preset cutting length, the controller sends a signal to the hydraulic cylinder 553 to start it, causing the piston rod of the hydraulic cylinder 553 to extend downward, driving the cutter 554 to move downward along the slide rail 552. Under the guidance of the slider 555 and the slide rail 552, the cutter 554 maintains linear motion and accurately cuts the label body 44. After the cutting is completed, the controller sends a signal to the hydraulic cylinder 553 again, causing the piston rod of the hydraulic cylinder 553 to retract upward, driving the cutter 554 to reset and wait for the next cutting command. This cycle repeats to achieve continuous and accurate cutting of the label.

[0055] After cutting, the finished labels are continuously conveyed to the unloading component 54 by the feeding component 52. At this time, the rotating rod 541 rotates continuously under the drive of the transmission belt 525. The silicone soft plate 544 on the rotating rod 541 rotates accordingly. The silicone soft plate 544 gently contacts the surface of the finished label, peeling the finished label off the conveying path. The finished label falls naturally into the collection box 6 at the top of the base 1 under the action of gravity. When the number of finished labels in the collection box 6 reaches a certain amount, the operator can remove the collection box 6 from the base 1, sort and transfer the finished labels, and then put the empty collection box 6 back in its original position to continue the collection work.

[0056] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A precision self-adhesive label slitting device, comprising a base (1), characterized in that: A fixing plate (2) is fixedly connected to the upper end of the base (1). A detachable plate (3) is fixedly connected to the upper end of the base (1) by bolts. A fixing component (4) is fixedly connected inside the detachable plate (3) by bearings. A cutting mechanism (5) is fixedly connected to the upper end of the base (1). A collection box (6) is placed on the upper end of the base (1). The cutting mechanism (5) includes a support base (51). A photoelectric sensor is embedded in the upper end of the support base (51). A feeding component (52) is fixedly connected to the upper end of the support base (51). A protective shell (53) is fixedly connected to one side of the feeding component (52). A cutting component (55) is fixedly connected to the upper end of the support base (51). A feeding component (54) is rotatably connected inside the cutting component (55).

2. The self-adhesive label slitting device with precise cutting capability according to claim 1, characterized in that: The feeding assembly (52) includes a motor (521) and an encoder. The motor (521) is fixedly installed on one side of the protective shell (53). The output end of the motor (521) is fixedly connected to a conveying roller (522) via a coupling. The encoder is installed at one end of the conveying roller (522). A gear (523) is fixedly connected to the outer surface of the conveying roller (522). A drive wheel (524) is fixedly connected to the outer surface of the conveying roller (522). A transmission belt (525) is meshed with the gear. Gear 2 (526) is meshed with the outer surface of gear 1 (523). Another conveying roller (522) is fixedly connected to the inner surface of gear 2 (526). Two connecting plates (527) are rotatably connected to the outer surfaces of the two conveying rollers (522). Both connecting plates (527) are fixedly installed on the upper end of the support base (51). The protective shell (53) is fixedly installed on the side of the connecting plate (527) near the motor (521).

3. The self-adhesive label slitting device capable of precise cutting according to claim 2, characterized in that: The cutting assembly (55) includes a U-shaped frame (551), which is fixedly installed on the upper end of the support base (51). Two slide rails (552) are fixedly connected to the inner cavity of the U-shaped frame (551). A hydraulic cylinder (553) is fixedly connected to the upper end of the U-shaped frame (551). A cutter (554) is fixedly connected to the output end of the hydraulic cylinder (553). Slider blocks (555) are fixedly connected to both sides of the cutter (554). The inner surfaces of the two sliders (555) are slidably connected to the outer surfaces of the two slide rails (552). A limit roller (556) is fixedly connected to the inner surface of the U-shaped frame (551).

4. The self-adhesive label slitting device capable of precise cutting according to claim 3, characterized in that: The feeding assembly (54) includes a rotating rod (541), a driven wheel (542) is fixedly connected to the outer surface of the rotating rod (541), a connecting pipe (543) is fixedly connected to the outer surface of the rotating rod (541), and a silicone flexible plate (544) is fixedly connected to the inner surface of the connecting pipe (543).

5. The self-adhesive label slitting device with precise cutting capability according to claim 1, characterized in that: The fixing component (4) includes an installation roller (41), which is fixedly installed inside the fixing plate (2) by bearings. The installation roller (41) is slidably installed inside the detachable plate (3) by bearings. The two threads on the outer surface of the installation roller (41) are the same but opposite in direction. The outer surface of the installation roller (41) is threaded with two limiting sleeves (42). The outer surface of the installation roller (41) is slidably connected with a roller (43). The outer surface of the roller (43) is wound with a label body (44).

6. The self-adhesive label slitting device with precise cutting capability according to claim 4, characterized in that: The outer surface of the driven wheel (542) is meshed with the inner surface of the transmission belt (525), and the rotating rod (541) is rotatably mounted on the inner surface of the U-shaped frame (551).

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