Quick mounting structure of gravure roller

Abstract

The utility model discloses a rapid installation structure of a gravure roller, which comprises an upper roller seat, butt joint cavities arranged on two sides of the bottom end of the upper roller seat, arc-shaped butt joint plates inserted and installed in the two butt joint cavities and bearings installed on the outer walls of one sides of the arc-shaped butt joint plates, and a gravure roller body is rotatably installed between the two arc-shaped butt joint plates through the bearings. A bolt assembly used for being connected with the upper roller base and the two arc-opening-shaped butt joint plates in a bolted mode is installed in the upper roller base. The shaft end of the gravure roller body is rotatably installed in the bearings of the two arc-shaped butt joint plates, the arc-shaped butt joint plates are inserted into the butt joint cavity in the bottom end of the upper roller seat, and finally the upper roller seat and the arc-shaped butt joint plates are bolted through the bolt assembly, so that rapid installation of the gravure roller body is completed. The installed gravure roller body rotates stably and does not have rotation vibration.

Description

Technical Field

[0001] This utility model relates to the field of printing roller accessories technology, specifically a quick installation structure for gravure printing rollers. Background Technology

[0002] Gravure rollers play a crucial role in printing equipment, primarily responsible for evenly distributing ink to the recessed areas of the printing plate, controlling ink thickness and continuous supply, thereby ensuring the clarity and quality of printed images and text. Their installation structure consists of a support, adjustment mechanism, bearing system, transmission system, and sealing and lubrication system, designed to guarantee the roller's stability, adjustment flexibility, and coordination with other rollers. In actual use, the gravure roller is first fixed to the support and connected to the transmission system. Then, the pressure between the roller and the printing plate is fine-tuned using the adjustment mechanism to ensure uniform ink distribution. During trial printing, the pressure and position are adjusted based on the results to ensure optimal printing quality.

[0003] As disclosed in CN214927980U, a quick-installation structure for a gravure printing roller includes a base, a fixing plate, and a clamping plate. The fixing plate is located at the top of the base, and the clamping plate is located on one side of the fixing plate. The base includes a slide groove located inside the base. A slide rod is provided inside the slide groove. A spring is provided on one side of the slide rod, and a sliding sleeve is provided on one side of the spring. The slide rod is sleeved with the slide groove, and the slide rod is bolted to the base. The spring is sleeved with the slide rod, and the sliding sleeve is sleeved with the slide rod. The clamping plate is bolted to the sliding sleeve, and the fixing plate is bolted to the base. A first bearing is provided inside the fixing plate. The side is equipped with a first protective pad, which includes a base, slide groove, slide rod, slide sleeve, spring, and clamping plate. This allows for portable clamping of the gravure roller, facilitating quick installation. However, the above technical solution mainly relies on the spring to fix the roller body with the clamping plate and fixing plate during use. In this case, the elastic deformation of the spring is not only used to clamp the roller body, but it is also affected by vibration when the roller body is working. That is, the rotational vibration of the gravure roller is transmitted to the clamping plate and spring, causing the installation position of the gravure roller to shift, making the printing position unstable and affecting the printing quality, especially in high-precision printing operations. Utility Model Content

[0004] The purpose of this utility model is to provide a quick installation structure for a gravure printing roller. The shaft end of the gravure printing roller body is rotatably installed in the bearings of two arc-shaped mating plates, and the arc-shaped mating plates are inserted into the mating cavity at the bottom of the upper roller seat. Finally, the upper roller seat and the arc-shaped mating plates are bolted together using a bolt assembly, thereby completing the quick installation of the gravure printing roller body and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick installation structure for a gravure roller, comprising an upper roller seat, docking cavities on both sides of the bottom end of the upper roller seat, arc-shaped docking plates inserted into the two docking cavities, and bearings installed on the outer wall of one side of the arc-shaped docking plates. The gravure roller body is rotatably installed between the two arc-shaped docking plates via the bearings. A bolt assembly for bolting the upper roller seat and the two arc-shaped docking plates is installed inside the upper roller seat.

[0006] Preferably, C-shaped sheet metal covers are bolted to both sides of the top of the upper roller seat, and straight grooves and through holes are respectively provided on the top wall and one outer wall of the C-shaped sheet metal covers.

[0007] Preferably, the bottom end of the upper roller seat is provided with an arc-shaped upper concave portion, the center of the arc-shaped upper concave portion coincides with the center of the gravure roller body, and the diameter of the arc-shaped upper concave portion is larger than the outer diameter of the gravure roller body.

[0008] Preferably, the upper roller seat has a hollow shaft cavity inside, and both outer walls of the upper roller seat have countersunk holes that communicate with the hollow shaft cavity.

[0009] Preferably, the bolt assembly includes a T-shaped long bolt installed inside the hollow shaft cavity, a washer fitted onto one end of the surface of the T-shaped long bolt, and a nut installed on the outer circumference of the T-shaped long bolt on one side of the washer.

[0010] Preferably, the arc-shaped mating plate has a flat portion on both the front and rear outer walls, and internal threaded holes are provided on both sides inside the arc-shaped mating plate. After the arc-shaped mating plate is inserted into the mating cavity, the internal threaded holes and the countersunk holes are concentric.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This quick-installation structure for a gravure printing roller comprises an upper roller seat, a mating cavity, two arc-shaped mating plates, bearings, a gravure printing roller body, and bolt assemblies that cooperate with each other. The shaft end of the gravure printing roller body is rotatably mounted in the bearings of the two arc-shaped mating plates, allowing the arc-shaped mating plates to be inserted into the mating cavity at the bottom of the upper roller seat. Finally, the upper roller seat and the arc-shaped mating plates are bolted together using bolt assemblies, thus completing the quick installation of the gravure printing roller body. The installed gravure printing roller body rotates stably without rotational vibration. Specifically, the shaft end is rotatably mounted in the bearings of the two arc-shaped mating plates and connected to the mating cavity at the bottom of the upper roller seat through insertion, and then bolted together using bolt assemblies. With its fixed design, the gravure roller body can be quickly inserted or removed without cumbersome disassembly procedures, greatly saving time on equipment maintenance and replacement. Furthermore, the coordinated design of the arc-shaped mating plate and the mating cavity ensures precise positioning of the roller body after installation, reducing deviations caused by assembly errors. This results in smooth rotation of the gravure roller. Stable rotation not only guarantees consistent printing quality but also reduces mechanical wear and noise caused by vibration, extending the equipment's lifespan. Simultaneously, the bearing support system distributes the roller's load, reducing localized stress concentration and ensuring good dynamic balance even during high-speed rotation. This prevents vibration from being transmitted to other mechanical parts, improving overall operational stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention. Figure 1 ;

[0016] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention. Figure 2 ;

[0017] Figure 6 This is a three-dimensional structural diagram of the upper roller seat of this utility model;

[0018] Figure 7 This is a three-dimensional structural diagram of the arc-shaped butt joint plate of this utility model.

[0019] In the diagram: 1. Upper roller seat; 101. Hollow shaft cavity; 102. Countersunk hole; 103. Butt joint cavity; 104. Arc-shaped upper concave part; 2. C-shaped sheet metal cover; 201. Through hole; 202. Straight groove; 3. Arc-shaped butt joint plate; 301. Flat part; 302. Internal threaded hole; 4. Bearing; 5. Gravure roller body; 6. Bolt assembly; 601. T-shaped long bolt; 602. Washer; 603. Nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-7 The present invention provides an embodiment of a quick-installation structure for a gravure printing roller, comprising an upper roller seat 1, docking cavities 103 provided on both sides of the bottom end of the upper roller seat 1, arc-shaped docking plates 3 inserted into the two docking cavities 103, and bearings 4 installed on the outer wall of one side of the arc-shaped docking plates 3. The gravure printing roller body 5 is rotatably installed between the two arc-shaped docking plates 3 through the bearings 4. The cooperation between the arc-shaped docking plates 3 and the docking cavities 103 can achieve quick and accurate positioning, ensuring that the roller body has good concentricity and centering after assembly. Due to the tight cooperation, vibration and abnormal noise caused by loosening or offset are reduced. The upper roller seat 1 is equipped with a bolt assembly 6 for bolting the upper roller seat 1 and the two arc-shaped docking plates 3.

[0022] C-shaped sheet metal covers 2 are bolted to both sides of the top of the upper roller seat 1. Straight grooves 202 and through holes 201 are respectively provided on the top wall and one outer wall of the C-shaped sheet metal cover 2. A C-shaped sheet metal cover 2 is bolted to both sides of the top of the upper roller seat 1, so that the upper roller seat 1 is connected to the frame of the printing equipment through the straight grooves 202 and through holes 201 on the top wall and outer wall of the C-shaped sheet metal cover 2. The upper roller seat 1 serves as an important foundation for supporting and fixing the gravure roller body 5, bearing the centrifugal force and mechanical load during high-speed rotation, reducing vibration and deformation, and ensuring that the gravure roller body 5 maintains a precise alignment state during operation.

[0023] The bottom end of the upper roller seat 1 is provided with an arc-shaped upper concave portion 104. The center of the arc-shaped upper concave portion 104 coincides with the center of the gravure roller body 5, and the diameter of the arc-shaped upper concave portion 104 is larger than the outer diameter of the gravure roller body 5.

[0024] The upper roller seat 1 has a hollow shaft cavity 101 inside, and countersunk holes 102 that communicate with the hollow shaft cavity 101 are provided on both outer walls of the upper roller seat 1.

[0025] The bolt assembly 6 includes a T-shaped long bolt 601 installed inside the hollow shaft cavity 101, a washer 602 fitted on one end of the surface of the T-shaped long bolt 601, and a nut 603 installed on the outer circumference of the T-shaped long bolt 601 on one side of the washer 602. The front and rear outer walls of the arc-shaped docking plate 3 are provided with flat parts 301. The arc-shaped docking plate 3 is inserted into the docking cavity 103 at the bottom of the upper roller seat 1 through the flat parts 301. Both sides of the arc-shaped docking plate 3 are provided with internal threaded holes 302. After the arc-shaped docking plate 3 is inserted into the docking cavity 103, the internal threaded holes 302 and the countersunk holes 102 are in a concentric state.

[0026] After the arc-shaped mating plate 3 is inserted into the mating cavity 103, the internal threaded hole 302 and the hollow shaft cavity 101 are concentric. The worker inserts the T-bolt 601 from the countersunk hole 102 into the internal threaded hole 302 and the hollow shaft cavity 101 in sequence until the end of the T-bolt 601 comes out. The T-bolt 601 is then tightened with the nut 603 to ensure that all connection parts are firmly secured and to prevent loosening due to vibration or impact.

[0027] In this embodiment of the application, the staff first inspects all relevant components, including the upper roller seat 1, the docking cavity 103, the two arc-shaped docking plates 3, the bearing 4, the gravure roller body 5, and the bolt assembly 6, to ensure that they are intact and without defects. Necessary tools, such as torque wrenches and cleaning tools, are also prepared. The two arc-shaped docking plates 3 are removed, allowing the shaft end of the gravure roller body 5 to be inserted into the inner ring of the bearing 4. After each shaft end of the gravure roller body 5 has an arc-shaped docking plate 3 installed through the bearing 4, the arc-shaped docking plates 3 are docked with the upper roller seat 1. At this point, the two arc-shaped... Insert the mating plate 3 into the mating cavity 103 at the bottom of the upper roller seat 1. Pay attention to the direction and position of the mating to ensure that the arc-shaped mating plate 3 fits tightly with the mating cavity 103. After confirming the mating, use the bolt assembly 6 to fix the arc-shaped mating plate 3 to the upper roller seat 1 together. Tighten the bolts evenly to ensure a tight connection without deviation. When tightening the bolts, tighten them evenly one by one according to the specified torque value to avoid uneven load or deformation. After installation, the operator manually rotates the gravure roller body 5 to check whether its rotation is smooth, without jamming or abnormal vibration. It is also necessary to check the tightness of all bolt assemblies 6 to ensure that there is no looseness.

Claims

1. A quick-installation structure for a gravure printing roller, characterized in that: It includes an upper roller seat (1), docking cavities (103) provided on both sides of the bottom end of the upper roller seat (1), arc-shaped docking plates (3) inserted and installed in the two docking cavities (103), and bearings (4) installed on the outer wall of one side of the arc-shaped docking plates (3). The two arc-shaped docking plates (3) are rotatably installed between them through the bearings (4). The upper roller seat (1) is equipped with bolt assemblies (6) for bolting the upper roller seat (1) and the two arc-shaped docking plates (3).

2. The quick-installation structure for a gravure printing roller according to claim 1, characterized in that: Both sides of the top of the upper roller seat (1) are bolted with C-shaped sheet metal covers (2). The top wall and one side outer wall of the C-shaped sheet metal cover (2) are respectively provided with straight grooves (202) and through holes (201).

3. The quick-installation structure for a gravure printing roller according to claim 1, characterized in that: The bottom end of the upper roller seat (1) is provided with an arc-shaped upper recess (104), the center of the arc-shaped upper recess (104) coincides with the center of the gravure roller body (5), and the diameter of the arc-shaped upper recess (104) is greater than the outer diameter of the gravure roller body (5).

4. The quick-installation structure for a gravure printing roller according to claim 1, characterized in that: The upper roller seat (1) has a hollow shaft cavity (101) inside, and countersunk holes (102) that communicate with the hollow shaft cavity (101) are provided on both outer walls of the upper roller seat (1).

5. The quick-installation structure for a gravure printing roller according to claim 4, characterized in that: The bolt assembly (6) includes a T-bolt (601) installed inside the hollow shaft cavity (101), a washer (602) fitted on one end of the surface of the T-bolt (601), and a nut (603) installed on the outer circumference of the T-bolt (601) on one side of the washer (602).

6. The quick-installation structure for a gravure printing roller according to claim 5, characterized in that: The front and rear outer walls of the arc-shaped docking plate (3) are provided with flat parts (301), and the two sides inside the arc-shaped docking plate (3) are provided with internal threaded holes (302). After the arc-shaped docking plate (3) is inserted into the docking cavity (103), the internal threaded holes (302) and the countersunk holes (102) are in a concentric state.

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