A quick fixing device for a plate roller surface protective sleeve

Abstract

The utility model discloses a kind of version roller surface protective sleeve quick fixing device, it is related to printing equipment technical field, to solve the problem that version roller surface produces wire-drawing scratch damage in the process of using traditional protective sleeve, including positioning sleeve assembly, apron assembly, axial limiting assembly and import component;The positioning sleeve assembly includes positioning sleeve main body, the inside of positioning sleeve main body is provided with receiving groove, the both sides of positioning sleeve main body are provided with mounting groove, the bottom of mounting groove is provided with guide groove, the inner chamber of guide groove is provided with return spring.The utility model is triggered axial limiting assembly action by design positioning sleeve assembly and axial limiting assembly, without additional manual operation fixing structure, realize that "roll is fixed", substantially improve operating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and more specifically, to a quick-fixing device for a protective sleeve on the surface of a printing roller. Background Technology

[0002] In industrial fields such as printing, coating, and lamination, printing rollers are core precision ink transfer or coating components. Their surfaces are typically engraved with extremely fine pits or patterns; any minor scratches, bumps, or wear can directly affect the quality of the final product, leading to serious problems such as printing defects and uneven coating, resulting in significant economic losses. To protect the valuable printing rollers from damage during storage, transportation, loading and unloading, and pre-installation preparation, operators usually cover them with special protective covers. These covers effectively isolate dust and moisture and prevent physical scratches caused by accidental contact.

[0003] When traditional protective sleeves are used to handle or move printing rollers, the printing rollers are prone to axial sliding or movement inside the protective sleeve due to stress, resulting in high-speed friction with the inner wall of the protective sleeve. With this axial movement, "stripping" scratches are easily generated on the surface of the printing rollers. This damage is often irreversible and will directly scrap an expensive printing roller. Based on the above problems, we propose a quick fixing device for the protective sleeve on the surface of printing rollers. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a quick fixing device for the protective sleeve on the surface of the printing roller. This solves the problem that during the use of traditional protective sleeves, the printing roller is prone to axial sliding or movement inside the protective sleeve due to force, resulting in high-speed friction with the inner wall of the protective sleeve, which in turn causes wire-like scratches and damage to the surface of the printing roller.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quick-fixing device for a protective sleeve on the surface of a printing roller, comprising a positioning sleeve assembly, a cover plate assembly, an axial limiting assembly, and an inlet assembly; the positioning sleeve assembly includes a positioning sleeve body, the interior of which is provided with a receiving groove, the two sides of which are provided with mounting grooves, the bottom of which is provided with a guide groove, the inner cavity of which is provided with a return spring, the top of which is provided with a guide rod, the top of which is provided with a support plate, and one side of which is provided with a pressure block; the cover plate assembly includes... A protective cover is provided on the top of the positioning sleeve body, and a through hole is provided in the middle of the protective cover; the axial limiting component includes a hinge frame provided on the bottom of both sides of the positioning sleeve body, a hinge shaft is provided inside the hinge frame, a flip plate is provided on the hinge shaft, a pressure bearing end is provided at one end of the flip plate near the pressure block, and a pressing block is provided at the other end of the flip plate; the inlet component includes a lower guide rail provided inside the positioning sleeve body and an upper guide rail provided at the bottom of the protective cover, an insertion hole and an outlet are respectively provided on the top two sides of the upper guide rail, and a guide groove is provided on the opposite surfaces of the lower guide rail and the upper guide rail.

[0006] During the process of storing the printing roller, the printing roller is located inside the storage groove, and the roller shaft is located inside the installation groove and overlaps the top of the support plate. Under the action of the printing roller's own gravity, the guide rod and the pressure block move downward along the guide groove. During the downward movement of the pressure block, pressure is applied to the bearing end. After the bearing end is pressed, it drives the flipping plate to rotate along the hinge axis. At this time, the extrusion block and the end face of the roller shaft are tightly fitted.

[0007] Preferably, one side of the protective cover is connected to the top of the positioning sleeve body via a hinge, the other side of the protective cover is provided with a buckle, and one side of the positioning sleeve body is provided with a locking ring that cooperates with the buckle.

[0008] Preferably, the positioning sleeve body has clearance grooves on both sides that match the movement trajectory of the pressure block, the support plate is semi-circular and the size of the semi-circle is the same as the size of the printing roller shaft, and a rubber pad is provided on the top surface of the support plate.

[0009] Preferably, the upper guide rail moves synchronously with the protective cover, and when the upper and lower guide rails are in contact, they form a circular protective sleeve delivery path.

[0010] Preferably, the flip plate is C-shaped, the extrusion block is circular, and the opposite side of the extrusion block is provided with anti-slip rubber strips.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the design of a positioning sleeve assembly and an axial limiting assembly, allows the printing roller to be placed inside the storage groove during the printing roller storage process. The roller shaft is located inside the mounting groove and overlaps the top of the support plate. Under the gravity of the printing roller itself, the guide rod and the pressure block move downward along the guide groove. During the downward movement of the pressure block, pressure is applied to the bearing end. After the bearing end is pressed, it drives the flipping plate to rotate along the hinge axis. At this time, the pressing block and the end face of the roller shaft are tightly fitted. The axial limiting assembly is triggered by the gravity of the printing roller itself, eliminating the need for additional manual operation of the fixing structure and achieving "roller placement and fixing". This greatly improves the operating efficiency and prevents the printing roller from sliding or moving axially inside the positioning sleeve body due to force, reducing the risk of scratches.

[0012] 2. This utility model also incorporates an inlet component, which includes an upper guide rail and a lower guide rail. The upper guide rail moves synchronously with the protective cover. When the upper and lower guide rails are in contact, they form a circular protective sleeve guide path. As the protective sleeve moves along the circular guide path, it can quickly wrap around the surface of the printing roller, forming a protective layer that protects the surface of the printing roller. It is easy to install and can further enhance the protection of the printing roller surface. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the positioning sleeve assembly structure of this utility model; Figure 3 This is a schematic diagram of the reset spring structure of this utility model; Figure 4 This is a schematic diagram of the cover plate assembly structure of this utility model; Figure 5 This is a schematic diagram of the axial limiting component structure of this utility model; Figure 6 This is a schematic diagram of the import component structure of this utility model; Figure 7 This is a schematic diagram of the practical state structure of this utility model.

[0014] The following are the labeling instructions in the diagram: 1. Positioning sleeve assembly; 101. Positioning sleeve body; 102. Storage groove; 103. Mounting groove; 104. Guide groove; 105. Return spring; 106. Guide rod; 107. Support plate; 108. Pressure block; 109. Locking ring; 2. Cover plate assembly; 201. Protective cover; 202. Lock; 203. Through hole; 3. Axial limiting assembly; 301. Hinge frame; 302. Hinge shaft; 303. Flip plate; 304. Pressure bearing end; 305. Extrusion block; 4. Inlet assembly; 401. Lower guide rail; 402. Upper guide rail; 403. Insertion hole; 404. Outlet; 405. Guide groove. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: This utility model relates to a quick-fixing device for a protective sleeve on the surface of a printing roller, comprising a positioning sleeve assembly 1, a cover plate assembly 2, an axial limiting assembly 3, and an inlet assembly 4. The positioning sleeve assembly 1 includes a positioning sleeve body 101, with a receiving groove 102 inside the positioning sleeve body 101. Mounting grooves 103 are formed on both sides of the positioning sleeve body 101, and a guide groove 104 is formed at the bottom of the mounting groove 103. A return spring 105 is fixedly connected to the inner cavity of the guide groove 104, and a guide rod 106 is fixedly connected to the top of the return spring 105. A support plate 10 is fixedly connected to the top of the guide rod 106. 7. A pressure block 108 is fixedly connected to one side of the guide rod 106. The positioning sleeve body 101 serves as the overall support frame. The internal storage groove 102 is used to accommodate the roller surface of the printing roller, and the mounting grooves 103 on both sides are used to place the roller shaft of the printing roller, providing an installation reference for other components. The mounting groove 103 serves as a dedicated space for positioning the roller shaft, limiting the radial displacement of the roller shaft, ensuring that the position of the printing roller is stable after it is placed, and providing a fulcrum for the axial limiting component 3. The guide groove 104 provides a vertical sliding track for the guide rod 106, ensuring that the guide rod 106 moves up and down only along a fixed path, avoiding transmission problems caused by displacement. In case of failure, the return spring 105 normally supports the guide rod 106 and the support plate 107 in a high position, facilitating the placement of the printing roller. After the printing roller is placed, it is compressed. When the printing roller is removed, the elastic return spring drives the guide rod 106 and the pressure block 108 back to their initial positions, releasing the axial limit. The guide rod 106 acts as a "transmission rod" connecting the support plate 107 and the pressure block 108, bearing the weight of the printing roller to drive the pressure block 108 downward, triggering the axial limit; at the same time, it slides along the guide groove 104 to ensure stable pressure transmission direction. The support plate 107 directly supports the printing roller shaft as a "support component," and its semi-circular structure is adapted to the roller shaft. To ensure smooth overlap of the rollers and prevent roller wobbling, the pressure block 108 acts as a "trigger" for axial limiting. When the guide rod 106 moves down, it applies pressure to the bearing end 304 of the axial limiting component 3, driving the flip plate 303 to rotate, indirectly achieving the contact between the extrusion block 305 and the end face of the roller. The cover plate assembly 2 includes a protective cover 201 rotatably connected to the top of the positioning sleeve body 101. A through hole 203 is fixedly connected in the middle of the protective cover 201. The protective cover 201 is used to close the top opening of the positioning sleeve body 101 to isolate external dust and moisture. The through hole 203 improves the entry path for the anti-slip sleeve.The axial limiting assembly 3 includes a hinge frame 301 fixedly connected to the bottom of both sides of the positioning sleeve body 101. A hinge shaft 302 is installed inside the hinge frame 301, and a flipping plate 303 is mounted on the hinge shaft 302. A pressure-bearing end 304 is installed at one end of the flipping plate 303 near the pressure block 108, and a pressing block 305 is installed at the other end of the flipping plate 303. The hinge frame 301 provides fixed support for the hinge shaft 302, ensuring the stability of the hinge shaft 302's position. It serves as a "fulcrum frame" for the rotation of the flipping plate 303, ensuring precise and controllable flipping action. The hinge shaft 302 provides a fulcrum for the flipping plate 303 to rotate around its axis, allowing the flipping plate 303 to rotate. The "approach / remote" movement of the extrusion block 305 towards the roller end face is achieved by the flipping plate 303, which receives pressure from the extrusion block 108 at one end and rotates around the hinge shaft 302 at the other end, causing the extrusion block 305 to move towards the roller end face. This realizes the transmission and direction conversion of force. The pressure-bearing end 304 receives pressure through a structure adapted to the extrusion block 108, converting the vertical pressure of the extrusion block 108 into the rotational force of the flipping plate 303, ensuring efficient transmission. The extrusion block 305, by tightly fitting against the end face, forms an axial barrier, completely restricting the sliding or movement of the printing roller along the axial direction. The guide component 4 includes a lower guide rail 401 fixedly connected inside the positioning sleeve body 101 and a guide rail fixedly connected to the protective... The upper guide rail 402 at the bottom of the cover 201 has an insertion hole 403 and an outlet 404 fixedly connected to its top two sides respectively. A guide groove 405 is formed on the opposite surfaces of the lower guide rail 401 and the upper guide rail 402. The lower guide rail 401 and the upper guide rail 402 form a circular path for the protective sleeve. The insertion hole 403 is for inserting the protective sleeve, the outlet 404 is for exiting the protective sleeve, and the guide groove 405 guides the protective sleeve to wrap around the surface of the printing roller. This invention, through the design of the positioning sleeve assembly 1 and the axial limiting assembly 3, ensures that during the storage of the printing roller, the printing roller is located inside the storage groove 102, and the roller shaft is located inside the mounting groove 103. The roller is attached to the top of the support plate 107. Under the gravity of the roller itself, the guide rod 106 and the pressure block 108 move downward along the guide groove 104. During the downward movement of the pressure block 108, pressure is applied to the bearing end 304. After the bearing end 304 is pressed, the flip plate 303 rotates along the hinge shaft 302. At this time, the extrusion block 305 is tightly attached to the end face of the roller shaft. The axial limiting component 3 is triggered by the gravity of the roller itself. No additional manual operation of the fixing structure is required, realizing "roller placement and fixing", which greatly improves the operation efficiency. At the same time, it can prevent the roller from sliding or moving axially inside the positioning sleeve body 101 due to force, reducing the risk of scratches.This utility model also incorporates an inlet component 4, which includes an upper guide rail 402 and a lower guide rail 401. The upper guide rail 402 moves synchronously with the protective cover 201. When the upper guide rail 402 and the lower guide rail 401 are in contact, they form a circular protective sleeve guide path. As the protective sleeve moves along this circular guide path, it can quickly wrap around the surface of the printing roller, forming a protective layer that protects the roller surface. Installation is convenient, and this further enhances the protection of the printing roller surface.

[0016] Specifically, one side of the protective cover 201 is connected to the top of the positioning sleeve body 101 via a hinge. Through the hinge connection structure, the protective cover 201 can be flexibly flipped around the top of the positioning sleeve body 101, greatly simplifying the operation process of placing and removing the printing roller and improving work efficiency. A latch 202 is installed on the other side of the protective cover 201, and a locking ring 109 that cooperates with the latch 202 is installed on one side of the positioning sleeve body 101. Through the cooperation structure of "latch 202 + locking ring 109", the protective cover 201 can be tightly fixed on the positioning sleeve body 101 after closing, preventing the protective cover 201 from accidentally loosening or opening when the device is moved or vibrated.

[0017] More specifically, the positioning sleeve body 101 has clearance grooves on both sides that match the movement trajectory of the pressure block 108. The clearance grooves provide unobstructed space for the pressure block 108 to move downward with the guide rod 106. The support plate 107 is semi-circular, and the size of the semi-circle is the same as the size of the printing roller shaft. A rubber gasket is glued to the top surface of the support plate 107 so that the support plate 107 can completely fit with the outer surface of the roller shaft, avoiding scratches on the surface of the roller shaft by the support plate 107 when the printing roller is placed.

[0018] It is worth mentioning that the upper guide rail 402 moves synchronously with the protective cover 201. The split design avoids interference when the printing roller is placed. When the upper guide rail 402 and the lower guide rail 401 are in contact, they form a circular protective sleeve guide path. The protective sleeve can quickly wrap around the surface of the printing roller along the circular guide path.

[0019] It is worth noting that the flip plate 303 is C-shaped. The C-shaped structure makes the force-bearing points and force-applying points of the flip plate 303 symmetrically distributed, and the rotation fulcrum is located in the middle of the C-shape, forming a more reasonable lever torque ratio. The extrusion block 305 is circular, and anti-slip rubber strips are bonded to the opposite surfaces of the extrusion block 305. The diameter of the circular extrusion block 305 is adapted to the size of the roller end face, which can achieve surface contact. The anti-slip rubber strips can fill the tiny gaps between the two, greatly improving the friction resistance. Even if the device is vibrated or tilted during transportation, the extrusion block 305 and the roller end face will not slide relative to each other.

[0020] Working principle: This embodiment provides a quick fixing device for the protective sleeve on the surface of a printing roller. In use, unlock the buckle 202, flip open the protective cover 201 around the hinge, align the roller face of the printing roller to be protected with the receiving groove 102, align the two ends of the roller shaft with the mounting groove 103, and slowly lower the printing roller until the two ends of the roller shaft are completely overlapped on the rubber pad of the support plate 107. The weight of the printing roller drives the support plate 107 and the guide rod 106 to move down, the return spring 105 is compressed, the pressure block 108 presses down on the bearing end 304, the flipping plate 303 rotates around the hinge shaft 302, and the anti-slip rubber strip of the extrusion block 305 is tightly attached to the end face of the roller shaft, completing the axial fixation; then the protective sleeve is inserted from the insertion hole 403 and moves along the circular guide path formed by the upper guide rail 402 and the lower guide rail 401, which can quickly wrap around the surface of the printing roller.

[0021] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A quick-fixing device for a protective sleeve on the surface of a printing roller, characterized in that, The system includes a positioning sleeve assembly (1), a cover plate assembly (2), an axial limiting assembly (3), and an inlet assembly (4). The positioning sleeve assembly (1) includes a positioning sleeve body (101), which has a storage groove (102) inside. The positioning sleeve body (101) has mounting grooves (103) on both sides. A guide groove (104) is provided at the bottom of the mounting groove (103). A return spring (105) is provided in the inner cavity of the guide groove (104). A guide rod (106) is provided at the top of the return spring (105). A support plate (107) is provided at the top of the guide rod (106). A pressure block (108) is provided on one side of the guide rod (106). The cover plate assembly (2) includes a protective cover (201) on the top of the positioning sleeve body (101). The protective cover (201) has a central... The axial limiting component (3) includes a hinge frame (301) disposed at the bottom of both sides of the positioning sleeve body (101), a hinge shaft (302) disposed inside the hinge frame (301), a flip plate (303) disposed on the hinge shaft (302), a pressure end (304) disposed at one end of the flip plate (303) near the pressure block (108), and a pressing block (305) disposed at the other end of the flip plate (303); the inlet component (4) includes a lower guide rail (401) disposed inside the positioning sleeve body (101) and an upper guide rail (402) disposed at the bottom of the protective cover (201), an insertion hole (403) and an outlet (404) respectively disposed on the top two sides of the upper guide rail (402), and a guide groove (405) disposed on the opposite surfaces of the lower guide rail (401) and the upper guide rail (402); During the process of storing the printing roller, the printing roller is located inside the storage groove (102), and the roller shaft is located inside the mounting groove (103) and overlaps the top of the support plate (107). Under the gravity of the printing roller itself, the guide rod (106) and the pressure block (108) move downward along the guide groove (104). During the downward movement of the pressure block (108), pressure is applied to the pressure end (304). After the pressure end (304) is pressed, it drives the flip plate (303) to rotate along the hinge shaft (302). At this time, the extrusion block (305) is tightly attached to the end face of the roller shaft.

2. The quick-fixing device for the protective sleeve on the surface of a printing roller according to claim 1, characterized in that, One side of the protective cover (201) is connected to the top of the positioning sleeve body (101) via a hinge, and the other side of the protective cover (201) is provided with a buckle (202). One side of the positioning sleeve body (101) is provided with a locking ring (109) that cooperates with the buckle (202).

3. The quick-fixing device for the protective sleeve on the surface of a printing roller according to claim 2, characterized in that, The positioning sleeve body (101) has clearance grooves on both sides that match the movement trajectory of the pressure block (108). The support plate (107) is semi-circular, and the size of the semi-circle is the same as the size of the printing roller shaft. The top surface of the support plate (107) is provided with a rubber pad.

4. The quick-fixing device for the protective sleeve on the surface of a printing roller according to claim 3, characterized in that, The upper guide rail (402) moves synchronously with the protective cover (201), and when the upper guide rail (402) and the lower guide rail (401) are in contact, they form a circular protective sleeve delivery path.

5. The quick-fixing device for the protective sleeve on the surface of a printing roller according to claim 4, characterized in that, The flip plate (303) is C-shaped, the extrusion block (305) is circular, and the opposite side of the extrusion block (305) is provided with anti-slip rubber strips.

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