A positioning structure for facilitating printing plate roller replacement

Abstract

The utility model discloses a positioning structure convenient to printing plate roll replacement, including plate roll, pivot, locating seat, transmission structure, fixed structure, the inside of plate roll is equipped with pivot, plate roll and pivot are fixedly connected through fixed bolt, the pivot is installed in the axle hole inside of locating seat, the left -hand end surface of locating seat is equipped with axle hole, the inner surface of locating seat's axle hole is equipped with three ball hole, the front end outer surface of locating seat is equipped with the rotation groove, the inside locating seat is installed with transmission structure and fixed structure, transmission structure and fixed structure are connected, transmission structure is by worm wheel, worm wheel groove, worm wheel tooth, auger, lengthening rod and square groove are composed. Through above -mentioned structure, can solve the problem of plate roll replacement operation complicated, positioning precision is poor and the problem of insufficient universality in the prior art, realizes quick, accurate replacement plate roll, improves printing production efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a positioning structure for facilitating the replacement of printing plate rollers. Background Technology

[0002] In the printing industry, printing rollers, as the core components carrying graphic information and realizing ink transfer, directly determine the quality of printed products and production efficiency through their performance and positioning accuracy. With the development of printing technology towards higher speeds, digitalization, and intelligence, printing rollers are showing a diversified development trend: on the one hand, different types of rollers, such as flexographic, gravure, and letterpress rollers, have different focuses in material selection. For example, gravure rollers often use electroplated copper or ceramic coatings to enhance wear resistance, while flexographic rollers pay more attention to the balance between surface hardness and elasticity. On the other hand, roller specifications are constantly being refined, from traditional narrow-width label printing to wide-width packaging printing, with roller diameters ranging from 200-1200mm and lengths from 300-3000mm, to adapt to printing equipment of different sizes. In actual production scenarios, changing printing rollers is a frequent and important operation.

[0003] However, traditional printing plate roller positioning structures have many problems in practical applications:

[0004] 1. The fixing method is cumbersome and relies heavily on bolts and other connecting parts. When changing the printing roller, operators need to use tools to disassemble and install it multiple times, which consumes a lot of time and manpower, resulting in low production efficiency.

[0005] 2. Positioning accuracy is difficult to guarantee, especially when dealing with printing rollers of different specifications. Traditional printing roller positioning structures require repeated manual measurement and adjustment. Even slight deviations can cause inaccurate registration of printed patterns and increase the scrap rate. Utility Model Content

[0006] The purpose of this utility model is to provide a positioning structure that facilitates the replacement of printing plate rollers, which can solve the problems of cumbersome plate roller replacement operation, poor positioning accuracy and lack of versatility in the prior art, so as to achieve fast and accurate plate roller replacement and improve printing production efficiency and quality.

[0007] To achieve the above objectives, a positioning structure for easy replacement of printing plate rollers is provided, including a plate roller, a rotating shaft, a positioning seat, a transmission structure, and a fixing structure;

[0008] The printing roller has a rotating shaft inside, and the printing roller and the rotating shaft are fixedly connected by fixing bolts. The rotating shaft is installed inside the shaft hole of the positioning seat. The positioning seat has a transmission structure and a fixing structure inside, and the transmission structure and the fixing structure are connected to each other.

[0009] According to the positioning structure for easy replacement of printing plate rollers, the two ends of the rotating shaft are provided with annular grooves, which are adapted to the ball bearings.

[0010] According to the positioning structure for easy replacement of printing plate rollers, the left end surface of the positioning seat is provided with a shaft hole, the inner surface of the shaft hole of the positioning seat is provided with three ball bearing holes, and the outer front surface of the positioning seat is provided with a rotating groove.

[0011] According to the positioning structure for facilitating printing plate roller replacement, the transmission structure consists of a worm gear, a worm gear groove, worm gear teeth, a worm, an extension rod, and a square groove.

[0012] According to the positioning structure for easy replacement of printing plate rollers, the worm gear is installed inside the positioning seat, the front end surface of the worm gear is provided with a worm gear groove, the side surface of the worm gear is provided with worm gear teeth, and the outer surface of the worm gear teeth is meshed with a worm.

[0013] According to the positioning structure for easy replacement of printing plate rollers, the outer surface of the worm gear is provided with threads, the tail end of the worm gear is fixedly connected to an extension rod, the extension rod is installed inside the rotating groove, and the outer surface of the extension rod is provided with a square groove.

[0014] According to the positioning structure for facilitating printing plate roller replacement, the fixing structure consists of a moving block, a spring, a fixing block, and a ball bearing.

[0015] According to the positioning structure for easy replacement of printing plate rollers, the movable block is installed on the front end surface of the worm gear, the bottom end of the movable block is provided with a tooth, and the tooth is adapted to the groove of the worm gear. A spring is fixedly connected to the inner surface of the movable block, and a fixing block is fixedly connected to the other end of the spring. A steel ball is installed at the other end of the fixing block. A groove is provided on the inner surface of the fixing block, and the groove is adapted to the ball. The connection between the fixing block and the ball is filled with lubricating oil.

[0016] This utility model has the following beneficial effects:

[0017] 1. Compared with existing technologies, this device features a fixed structure, allowing for easy disassembly and installation simply by rotating the extension rod. No complex tools or cumbersome procedures are required, and the entire process can be completed by a single person, significantly improving replacement efficiency and reducing production downtime. Furthermore, the use of a worm gear drive provides a large transmission ratio and smooth transmission, ensuring stable pressure on the shaft from the fixed structure and preventing loosening during printing. The use of steel balls and lubricating oil also reduces wear and extends the equipment's lifespan.

[0018] 2. Compared with existing technologies, this invention features a transmission structure and a fixed structure. Through the cooperation of the transmission structure and the fixed structure, the ball bearings can be precisely engaged in the annular groove of the rotating shaft, effectively positioning the printing roller and the rotating shaft, ensuring the stability of the printing roller during the printing process, reducing registration deviation, and improving printing quality. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0020] Figure 1 This is a three-dimensional front view of a positioning structure for facilitating the replacement of printing plate rollers according to the present invention;

[0021] Figure 2 This is a structural diagram of a printing plate roller with a positioning structure for easy replacement of printing plate rollers according to the present invention;

[0022] Figure 3 This is a cross-sectional view of a positioning seat for a positioning structure that facilitates the replacement of printing plate rollers according to this utility model.

[0023] Figure 4 This is a fixed structure diagram of a positioning structure for facilitating the replacement of printing plate rollers according to the present invention.

[0024] Legend:

[0025] 1. Printing roller; 2. Rotating shaft; 201. Slot; 3. Positioning seat; 301. Shaft hole; 302. Ball bearing hole; 303. Rotating groove; 4. Transmission structure; 401. Worm gear; 402. Worm gear groove; 403. Worm gear tooth; 404. Worm; 405. Extension rod; 406. Square groove; 5. Fixing structure; 501. Moving block; 502. Spring; 503. Fixing block; 504. Ball bearing. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-4 This utility model provides a positioning structure for easy replacement of printing plate rollers, which includes a plate roller 1, a rotating shaft 2, a positioning seat 3, a transmission structure 4, and a fixing structure 5.

[0028] The printing roller 1 has a rotating shaft 2 inside. The printing roller 1 and the rotating shaft 2 are fixedly connected by fixing bolts. The rotating shaft 2 is installed inside the shaft hole 301 of the positioning seat 3. The positioning seat 3 has a transmission structure 4 and a fixing structure 5 inside. The transmission structure 4 and the fixing structure 5 are connected.

[0029] The two ends of the rotating shaft 2 are provided with annular grooves 201, which are adapted to the ball bearings 504.

[0030] The left end surface of the positioning seat 3 is provided with a shaft hole 301, the inner surface of the shaft hole 301 of the positioning seat 3 is provided with three ball holes 302, and the outer surface of the front end of the positioning seat 3 is provided with a rotating groove 303.

[0031] The transmission structure 4 consists of a worm gear 401, a worm gear groove 402, a worm gear tooth 403, a worm 404, an extension rod 405, and a square groove 406.

[0032] The worm gear 401 is installed inside the positioning seat 3. The front end surface of the worm gear 401 is provided with a worm gear groove 402, and the side surface of the worm gear 401 is provided with worm gear teeth 403. The outer surface of the worm gear teeth 403 is meshed with a worm 404.

[0033] The outer surface of the worm 404 is threaded, and the tail end of the worm 404 is fixedly connected to an extension rod 405. The extension rod 405 is installed inside the rotating groove 303, and the outer surface of the extension rod 405 is provided with a square groove 406.

[0034] The fixed structure 5 consists of a moving block 501, a spring 502, a fixed block 503, and a ball bearing 504.

[0035] The movable block 501 is installed on the front end surface of the worm gear 401. The bottom end of the movable block 501 is provided with a tooth, which is adapted to the groove 402 of the worm gear. A spring 502 is fixedly connected to the inner surface of the movable block 501. A fixed block 503 is fixedly connected to the other end of the spring 502. A steel ball 504 is installed on the other end of the fixed block 503. A groove is provided on the inner surface of the fixed block 503, which is adapted to the ball 504. The connection between the fixed block 503 and the ball 504 is filled with lubricating oil.

[0036] Working principle: When the printing roller 1 needs to be installed, align the printing roller 1 with the rotating shaft 2 on it with the shaft hole 301 of the positioning seat 3, and insert the rotating shaft 2 into the shaft hole 301. At this time, in the initial state, the spring 502 in the fixing structure 5 is in a naturally extended state, pushing the fixing block 503 and the ball bearing 504 to move in the direction of the rotating shaft. The ball bearing 504 is engaged in the annular grooves 201 at both ends of the rotating shaft 2, thus achieving the initial fixation of the rotating shaft 2 and the printing roller 1.

[0037] If further adjustment or reinforcement is needed, a tool can be inserted into the square groove 406 of the extension rod 405, and the extension rod 405 can be rotated to drive the worm 404 to rotate within the rotating groove 303. Since the worm 404 meshes with the worm gear teeth 403 of the worm wheel 401, the rotation of the worm 404 will drive the worm wheel 401 to rotate. When the worm wheel 401 rotates, the worm gear groove 402 on its front end surface interacts with the convex teeth at the bottom of the moving block 501, causing the moving block 501 to move. The movement of the moving block 501 will compress or stretch the spring 502, thereby adjusting the pressure of the ball 504 on the rotating shaft 2 through the fixing block 503, so that the ball 504 is more tightly engaged in the annular groove 201, enhancing the fixing effect.

[0038] When the printing roller 1 needs to be replaced, the extension rod 405 is rotated in the opposite direction, which drives the worm gear 401 to rotate in the opposite direction through the transmission structure 4, causing the moving block 501 to move in the opposite direction. The spring 502 returns to its original state or is stretched, and the ball 504 is disengaged from the annular groove 201 of the rotating shaft 2 under the drive of the fixed block 503. At this time, the rotating shaft 2 and the printing roller 1 can be pulled out from the shaft hole 301 of the positioning seat 3 to complete the disassembly.

[0039] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A positioning structure for facilitating the replacement of printing plate rollers, characterized in that, It includes a printing roller (1), a rotating shaft (2), a positioning seat (3), a transmission structure (4), and a fixing structure (5); The printing roller (1) is equipped with a rotating shaft (2), and the printing roller (1) and the rotating shaft (2) are fixedly connected by fixing bolts. The rotating shaft (2) is installed inside the shaft hole (301) of the positioning seat (3). The positioning seat (3) is equipped with a transmission structure (4) and a fixing structure (5), and the transmission structure (4) and the fixing structure (5) are connected to each other.

2. The positioning structure for facilitating printing plate roller replacement according to claim 1, characterized in that, The rotating shaft (2) has annular grooves (201) on both ends of its surface, and the grooves (201) are adapted to the balls (504).

3. The positioning structure for facilitating printing plate roller replacement according to claim 1, characterized in that, The left end surface of the positioning seat (3) is provided with a shaft hole (301), the inner surface of the shaft hole (301) of the positioning seat (3) is provided with three ball holes (302), and the outer surface of the front end of the positioning seat (3) is provided with a rotating groove (303).

4. The positioning structure for facilitating printing plate roller replacement according to claim 1, characterized in that, The transmission structure (4) consists of a worm wheel (401), a worm wheel groove (402), a worm wheel tooth (403), a worm (404), an extension rod (405), and a square groove (406).

5. A positioning structure for facilitating printing plate roller replacement according to claim 4, characterized in that, The worm gear (401) is installed inside the positioning seat (3). The front end surface of the worm gear (401) is provided with a worm gear groove (402). The side surface of the worm gear (401) is provided with worm gear teeth (403). The outer surface of the worm gear teeth (403) is meshed with a worm (404).

6. The positioning structure for facilitating printing plate roller replacement according to claim 5, characterized in that, The outer surface of the worm (404) is provided with threads, and the tail end of the worm (404) is fixedly connected to an extension rod (405). The extension rod (405) is installed inside the rotating groove (303), and the outer surface of the extension rod (405) is provided with a square groove (406).

7. The positioning structure for facilitating printing plate roller replacement according to claim 1, characterized in that, The fixed structure (5) consists of a moving block (501), a spring (502), a fixed block (503), and a ball bearing (504).

8. A positioning structure for facilitating printing plate roller replacement according to claim 7, characterized in that, The movable block (501) is mounted on the front end surface of the worm gear (401). The bottom end of the movable block (501) is provided with a tooth, which is adapted to the groove (402) of the worm gear. A spring (502) is fixedly connected to the inner surface of the movable block (501). The other end of the spring (502) is fixedly connected to a fixed block (503). A steel ball (504) is installed on the other end of the fixed block (503). A groove is provided on the inner surface of the fixed block (503), which is adapted to the ball (504). The connection between the fixed block (503) and the ball (504) is filled with lubricating oil.

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