Standby roll changing positioning device for rotary press
By designing a backup roll changing positioning device for rotary printing presses, the roll changing process of rotary printing presses can be quickly changed, which solves the problem of long downtime in the existing technology and improves production efficiency and printing quality.
Patent Information
- Application Number
- CN202422838723.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing rotary printing presses require a long downtime during roll changes, resulting in low production efficiency.
A backup roll changing and positioning device for a rotary printing press was designed, including a worktable, a placement table, a roll, a roll changing mechanism, and an adjustment mechanism. Through the cooperation of a rotating cover and a threaded rod, the printing press can be stopped in a very short time during the roll changing process, and the roll tension can be adjusted to ensure the continuity of the printing process.
It significantly improves the production efficiency of printing presses, reduces downtime for roll changes, ensures printing quality, and avoids problems such as wrinkles and stretching deformation.
Smart Images
Figure CN223521973U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to printing press device technical field especially uses the standby roll change positioning device for rotary printing press. BACKGROUND
[0002] Rotary printing press is important equipment in printing industry, and its development is closely related to the growth of modern printing demand. In the early printing technology, lithography and letterpress printing occupy the dominant position, but with the increase of printing volume and higher requirements for printing speed, rotary printing press gradually emerges, and the appearance of rotary printing press is mainly to meet the demand of large-scale, high-speed and continuous printing. It can print a large number of pages in a short time, and is suitable for the production of large quantities of printed matter such as newspapers, magazines and advertising leaflets. With the continuous progress of science and technology, rotary printing press has made remarkable improvement and improvement in mechanical structure, control system and printing quality.
[0003] In the prior art, most rotary printing machines have a significant limitation when changing rolls, that is, they need to stop working for a long time. This long time of roll change stoppage has many adverse effects, reduces production efficiency, and prolongs the delivery time of printed matter. With the growth of printing volume and the improvement of efficiency requirements, this problem is more prominent, so a standby roll change positioning device for rotary printing press is proposed to solve the above problems. UTILITY MODEL CONTENT
[0004] In order to make up for the above shortcomings, the utility model provides a standby roll change positioning device for rotary printing press, which aims to solve the problem of "stopping work when changing rolls of rotary printing press, thereby reducing production efficiency" mentioned in the prior art.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a standby roll change positioning device for rotary printing press, comprising a workbench, a placing table is installed on the top of the workbench, a spool is also installed on the top of the workbench, a roll changing mechanism is arranged on the left side of the workbench, an adjusting mechanism is also arranged on the left side of the workbench, the roll changing mechanism is composed of a fixing assembly and a roll changing assembly, the roll changing assembly comprises a fixed plate, a connecting rod is rotatably connected to the left side of the fixed plate, a rotating cover is rotatably connected in the connecting rod, and a rotating wheel is rotatably connected to the inner wall of the workbench.
[0006] As a further description of the above technical scheme: the fixing assembly comprises a mounting plate, an upper roll plate is fixedly connected to the rear part of the workbench, a lap joint block is installed on the top of the workbench, and a spring block is fixedly connected to the left side of the lap joint block.
[0007] As a further description of the above technical solution: the rear part of the fixed plate is fixedly connected with the workbench, and the surface of the rotating wheel is provided with a transmission belt, and the rotating wheel is in transmission connection with the rotating cover through the transmission belt.
[0008] As a further description of the above technical solution: the right side of the mounting plate is fixedly connected with the left side of the workbench, and the spring block is fixedly connected with the right side of the mounting plate.
[0009] As a further description of the above technical solution: the adjusting mechanism comprises a sliding plate, the top of the workbench is connected with a baffle, the baffle is distributed in front and back, and the baffle is slidably connected with a pressing plate inside.
[0010] As a further description of the above technical solution: the adjusting mechanism comprises a cross block, the inner wall of the cross block is rotatably connected with a threaded rod, and the top of the threaded rod is fixedly connected with a knob.
[0011] As a further description of the above technical solution: the surface of the sliding plate is slidably connected with the inner wall of the workbench.
[0012] As a further description of the above technical solution: the bottom of the cross block is fixedly connected with the top of the baffle.
[0013] The utility model has the following beneficial effects:
[0014] 1、the utility model discloses a workbench, a placing table, a reel, a mounting plate, a upper winding board, a lap joint block, a spring block, a fixed plate, a connecting rod, a rotating wheel, a rotating cover cooperate and work, under the action of connecting rod and rotating cover, when the reel is replaced, only need very short time to stop the printing machine, and the replacement mode is more convenient, greatly reduces the downtime caused by changing the roll, makes the printing machine be able to keep running state for a longer time, thereby more products can be printed in unit time, and production efficiency is improved significantly.
[0015] 2、the utility model discloses a sliding plate, a baffle, a pressing plate, a cross block, a threaded rod, a knob cooperate and work, realize the reel height adjustment up and down, change the tension distribution of roll material, ensure that the roll material always maintains proper tension in the printing process, avoid the problems such as wrinkle, tensile deformation or paper misalignment, thereby improve the printing quality. ACCURACY OF DRAWINGS
[0016] Figure 1 It is the overall structure schematic view of the standby roll changing positioning device for the rotary printing machine in the utility model.
[0017] Figure 2 It is the overall structure half cut drawing of the standby roll changing positioning device for the rotary printing machine in the utility model.
[0018] Figure 3 This is a schematic diagram of the fixing plate structure of the spare roll changing positioning device for a rotary printing press in this utility model;
[0019] Figure 4 This is a schematic diagram of the threaded rod structure of the spare roll changing positioning device for a rotary printing press in this utility model.
[0020] Legend:
[0021] 1. Workbench; 2. Placement table; 3. Roller; 4. Roll changing mechanism; 401. Mounting plate; 402. Upper winding plate; 403. Overlap block; 404. Spring block; 405. Fixing plate; 406. Connecting rod; 407. Rotary wheel; 408. Rotating cover; 5. Adjustment mechanism; 501. Sliding plate; 502. Baffle; 503. Pressing plate; 504. Horizontal block; 505. Threaded rod; 506. Knob. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please refer to Figure 1 - Figure 2 An embodiment of this utility model provides a spare roll changing and positioning device for a rotary printing press, including a worktable 1, which is a fixed support for the device. A placement platform 2 is installed on the top of the worktable 1 for placing printing materials. A roll 3 is also installed on the top of the worktable 1. The roll 3, the worktable 1, and the placement platform 2 form a rotary printing press. This is prior art and will not be described in detail. A roll changing mechanism 4 is provided on the left side of the worktable 1, and an adjustment mechanism 5 is also provided on the left side of the worktable 1.
[0024] Please refer to Figure 1 - Figure 3The roll changing mechanism 4 is composed of a fixed component and a roll changing component. The roll changing component includes a fixed plate 405 for placing the roll shaft 3 of the roll material that is about to be used up. The left side of the fixed plate 405 is rotationally connected with a connecting rod 406, one end of the connecting rod 406 is a circular ring, and the inside of the connecting rod 406 is rotationally connected with a rotating cover 408. The rotating cover 408 is rotationally connected inside the circular ring at one end of the connecting rod 406. The inner wall of the workbench 1 is rotationally connected with a rotating wheel 407, and the rotating wheel 407 is fixedly connected on the output end of the device main body. When the device is started, the rotating wheel 407 is driven to rotate. The rear part of the fixed plate 405 is fixedly connected with the workbench 1. The surface of the rotating wheel 407 is provided with a transmission belt, and the rotating wheel 407 is in transmission connection with the rotating cover 408 through the transmission belt.
[0025] Please refer to Figure 1 Figure 3 The fixed component includes a mounting plate 401 for connecting the workbench 1 and the baffle 502. The rear part of the workbench 1 is fixedly connected with a winding plate 402, which is different from the fixed plate 405 and is used for placing the standby roll material. The top of the workbench 1 is provided with a lap joint block 403 which is pressed to the inner wall of the mounting plate 401 for lapping by the spring block 404. The lap joint block 403 is separated from the workbench 1 in a staggered manner. The left side of the lap joint block 403 is fixedly connected with the spring block 404. Then the roll shaft 3 and the standby roll material can be smoothly pushed into the device for fixation. The right side of the mounting plate 401 is fixedly connected with the left side of the workbench 1, and the spring block 404 is fixedly connected with the right side of the mounting plate 401. This realizes the effect of stopping the printing machine only for a very short time and the replacement is more convenient, greatly reducing the downtime caused by roll changing.
[0026] Please refer to Figure 4 The adjusting mechanism 5 includes a sliding plate 501. The top of the workbench 1 is connected with a baffle 502 which is distributed in front and back directions. The inside of the baffle 502 is slidingly connected with a pressing plate 503. The pressing plate 503 and the sliding plate 501 move by the action force of the spring. The surface of the sliding plate 501 is slidingly connected with the inner wall of the workbench 1. The adjusting mechanism 5 includes a cross block 504. The inner wall of the cross block 504 is rotationally connected with a threaded rod 505 which rises or falls along the inner wall of the cross block 504 according to requirements. The top of the threaded rod 505 is fixedly connected with a knob 506 which drives the threaded rod 505 to rotate. The bottom of the cross block 504 is fixedly connected with the top of the baffle 502. This realizes the effect of adjusting the up and down height of the roll shaft 3, changing the tension distribution of the roll material, and ensuring that the roll material always maintains a proper tension during the printing process.
[0027] Working principle: in use, the operator places the standby roll changing roller in the upper roll plate 402 when changing the roll of the rotary printing machine, then presses the lap joint block 403 on the inner wall of the mounting plate 401 through the spring block 404 to fit, at this time the lap joint block 403 is misaligned and separated from the workbench 1, then the almost used-up roll shaft 3 is pushed to the fixed plate 405, then the handle on the surface of the rotating cover 408 is pulled, so that the connecting rod 406 rotates along the left side of the fixed plate 405, realizing that the rotating cover 408 continues to drive the roll shaft 3 to rotate and unroll, while the other side can install the standby roll changing roller in advance, then when the roll material of the roll shaft 3 is exhausted, the standby roll changing roller can be started directly to make the standby roll changing roller repeat the work of the roll shaft 3, and the roll shaft 3 whose roll material is exhausted can be directly taken out from the fixed plate 405, realizing that when the roll shaft 3 is replaced, the printing machine only needs to stop for a very short time, and the replacement method is more convenient, greatly reducing the downtime caused by roll changing, so that the printing machine can maintain a running state for a longer time, so that more products can be printed in a unit of time, significantly improving the production efficiency, and at the same time, if the roll material tension is insufficient and wrinkles or sagging occur during the printing process of the rotary printing machine, the operator can rotate the knob 506, which drives the threaded rod 505 to rotate, so that the threaded rod 505 rises or falls along the inner wall of the cross block 504 according to requirements, so that the pressing plate 503 and the sliding plate 501 move under the action of the spring force, realizing that the height of the roll shaft 3 can be adjusted, the tension distribution of the roll material is changed, and the printing quality is improved.
[0028] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. Backup changeover positioning device for rotary printing presses, comprising a worktable (1), characterized in that: The top of the workbench (1) is provided with a placing table (2), and the top of the workbench (1) is also provided with a reel (3); the left side of the workbench (1) is provided with a reel changing mechanism (4), and the left side of the workbench (1) is also provided with an adjusting mechanism (5); the reel changing mechanism (4) is composed of a fixing assembly and a reel changing assembly; the reel changing assembly comprises a fixing plate (405), the left side of the fixing plate (405) is rotatably connected with a connecting rod (406), the inside of the connecting rod (406) is rotatably connected with a rotating cover (408), and the inner wall of the workbench (1) is rotatably connected with a rotating wheel (407).
2. The backup changeover positioning device for a web press according to claim 1, characterized in that: The fixing assembly comprises a mounting plate (401), the rear part of the workbench (1) is fixedly connected with an upper reel plate (402), and the top of the workbench (1) is provided with a lap joint block (403); the left side of the lap joint block (403) is fixedly connected with a spring block (404).
3. The backup changeover positioning device for a web press according to claim 1, characterized in that: The rear part of the fixing plate (405) is fixedly connected with the workbench (1), the surface of the rotating wheel (407) is provided with a transmission belt, and the rotating wheel (407) is in transmission connection with the rotating cover (408) through the transmission belt.
4. The backup changeover positioning device for a web press according to claim 2, characterized in that: The right side of the mounting plate (401) is fixedly connected with the left side of the workbench (1), and the spring block (404) is fixedly connected with the right side of the mounting plate (401).
5. The backup changeover positioning device for a web press according to claim 1, wherein: The adjusting mechanism (5) comprises a sliding plate (501), the top of the workbench (1) is connected with a baffle (502), the baffle (502) is distributed in front of and behind each other, and the inside of the baffle (502) is slidably connected with a pressing plate (503).
6. The backup changeover positioning device for web-fed rotary printing presses according to claim 1, characterized in that: The adjusting mechanism (5) comprises a cross block (504), the inner wall of the cross block (504) is rotatably connected with a threaded rod (505), and the top of the threaded rod (505) is fixedly connected with a knob (506).
7. The backup changeover positioning device for a web press according to claim 5, characterized in that: The surface of the sliding plate (501) is slidably connected with the inner wall of the workbench (1).
8. The backup changeover positioning device for a web press according to claim 6, characterized in that: The bottom of the cross block (504) is fixedly connected with the top of the baffle (502).