Intermittent and full-rotary flexographic printing machine
By designing a rotatable roll roller and a slide with position sensor in an intermittent printing machine, safe roll down is achieved, and the base paper roll is replaced without shutdown through the base paper storage mechanism, which solves the safety hazards and inefficiency problems in the process of unloading and base paper replacement in traditional printing machines.
Patent Information
- Application Number
- CN202520036726.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Traditional intermittent printing machines are prone to equipment damage and safety hazards due to excessive weight during the process of unloading or unloading, and the replacement of the base paper requires shutdown, which affects efficiency and printing quality.
An intermittent, all-wheel-rotating flexographic printing machine is designed, using rotatable roll rollers and a slide with position sensors. It can achieve safe downward movement of rolls through motor drive and chain drive, and can realize no shutdown replacement of the rolls through the bottom paper storage mechanism.
It effectively avoids equipment damage and safety risks caused by excessive downward movement of the coil, improves operational safety, and at the same time, by replacing the backing paper coil without shutdown, the production efficiency and printing quality stability are improved.
Smart Images
Figure CN222556120U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of printing machines, in particular to an intermittent, full-rotation flexographic printing machine. Background Art
[0002] Intermittent and full-rotary flexographic printing presses are mainly composed of an unwinding unit, a front traction unit, a printing color group, a rear traction unit, and a winding unit. Traditional intermittent printing presses use steel rollers to pull the paper to an intermittent full-rotary feeding mode. During the operation of the printing press, the coil of the unwinding unit has a very large outer diameter and is heavy. There will be residual material after the coil is printed. When another coil needs to be replaced, it is necessary to unload the material. The traditional printing unwinding material is sleeved on the unwinding roller, and the unwinding roller moves up and down through the lifting component to complete the loading or unloading. Since the weight of the coil or the finished coil is very large, especially during the unloading or unloading process, once an obstacle is encountered, if it continues to fall, it will cause damage to the equipment and scratches on the coil, and even affect the safety of the operator. In the process of printing labels, it needs to be compounded with the base paper. The amount of the base paper coil is very small and needs to be replaced after a period of time. The replacement requires shutdown operation, which greatly affects the work efficiency and the stability of printing quality. Utility Model Content
[0003] In order to solve the above problems, the purpose of the utility model is to provide an intermittent, full-rotary flexographic printing machine with safe loading and unloading of printing rolls and non-stop replacement of base paper rolls, thereby improving safe operation and increasing production efficiency.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intermittent, full-rotary flexographic printing machine, comprising a frame, on which a unwinding unit, a front traction unit, a printing color group, a rear traction unit and a winding unit are sequentially arranged, a printing unwinding roll is installed on the unwinding unit, the unwinding unit comprises a side plate, a winding roller, a guide rail and a slide seat which rises and falls along the guide rail, the printing unwinding roll is installed on the winding roller, the winding roller is rotatably installed on the slide seat, the guide rail is vertically installed on the side plate, a first motor which drives the winding roller to rotate is installed on the slide seat, a second motor is installed above the slide seat, the second motor is installed on the side plate, a sprocket is connected to the end of the second motor, and the sprocket is provided with a The chain connected for transmission has a pull rod at one end of the chain, a sleeve hole for the pull rod to freely insert is provided on the slide, a support plate is provided at the bottom of the pull rod, the size of the support plate is larger than the inner hole of the sleeve hole, a detection plate is installed on the support plate, a position sensor close to the detection plate is provided on the slide, and also includes a control processor, which is electrically connected to the position sensor, the first motor and the second motor. When the position sensor cannot sense the detection plate, the control processor controls the first motor and the second motor to stop running, and a bottom paper unwinding roll is arranged on the frame. After the bottom paper unwinding roll is output, it passes through a bottom paper storage mechanism and is combined with the printing unwinding roll.
[0005] The slide seat is connected with a fixing block, the sleeve hole is arranged on the fixing block, and the position sensor is installed on the fixing block.
[0006] An upper limit sensor and a lower limit sensor are also installed on the side plate. The upper limit sensor and the lower limit sensor are respectively controlled and connected by a control processor. The slide moves at a position between the upper limit sensor and the lower limit sensor.
[0007] The bottom paper storage mechanism includes a shell, a transverse guide rail is arranged in the shell, a slide plate sliding along the transverse guide rail is arranged, positioning guide rollers arranged up and down are arranged on the left side of the shell, the slide plate is arranged on the left side of the shell, and movable guide rollers arranged up and down are arranged on the slide plate, the positioning guide rollers and the movable guide rollers correspond to each other in number, and a telescopic cylinder is arranged on the outside of the shell, and the piston rod of the telescopic cylinder is connected to the slide plate.
[0008] The beneficial effect of the utility model is that after the bottom paper unwinding roll is output, a certain amount of storage is carried out through the bottom paper storage mechanism, so that during the replacement process of the bottom paper unwinding roll, the bottom paper is continuously output by the bottom paper storage mechanism, providing sufficient time for the replacement of the bottom paper unwinding roll, and there is no need to stop the machine to replace the bottom paper roll, thereby greatly improving the production efficiency. The printing unwinding material is installed on the winding roller. When unwinding, the winding roller on the slide is pulled down by the chain driven by the second motor. After the roll or the slide stops moving down due to an obstacle, the pull rod will still move down through the sleeve hole driven by the chain. At this time, the position sensor arranged on the slide is away from the detection plate. When the position sensor cannot sense the detection plate, the control processor will stop the operation of the first motor and the second motor to avoid excessive downward movement of the roll to cause damage to the equipment or endanger the operator, thereby protecting the safety of the operator and the equipment.
[0009] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural diagram of a specific implementation method of the utility model;
[0011] Figure 2 It is a side view of the unwinding unit in a specific embodiment of the utility model;
[0012] Figure 3 It is a structural diagram of the bottom paper storage mechanism in a specific implementation mode of the utility model;
[0013] Figure 4 The structure of the unwinding unit in the specific implementation mode of the utility model Figure 1 ;
[0014] Figure 5 The structure of the unwinding unit in the specific implementation mode of the utility model Figure 2 ;
[0015] Figure 6 It is a cross-sectional view of the inner part of the unwinding unit in a specific embodiment of the utility model;
[0016] Figure 7 for Figure 6 Enlarged view of point A in the middle.
[0017] In the figure, 1 is a frame; 2 is an unwinding unit; 3 is a front traction unit; 4 is a printing color group; 5 is a rear traction unit; 6 is a winding unit; 7 is a detection plate; 8 is a position sensor; 9 is an upper limit sensor; 10 is a lower limit sensor; 21 is a side plate; 22 is a winding roller; 23 is a guide rail; 24 is a slide seat; 25 is a sprocket; 27 is a chain; 28 is a pull rod; 28 is a support plate; 241 is a sleeve hole; 242 is a fixed block; 20 is a bottom paper storage mechanism; 200 is a shell; 201 is a telescopic cylinder; 202 is a slide plate; 203 is a positioning guide roller; 204 is a movable guide roller. DETAILED DESCRIPTION
[0018] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.
[0019] like Figure 1 — Figure 7 As shown, the present embodiment discloses an intermittent, full-rotary flexographic printing machine, including a frame 1, on which a unwinding unit 2, a front traction unit 3, a printing color group 4, a rear traction unit 5 and a winding unit 6 are sequentially arranged, a printing unwinding roll 100 is installed on the unwinding unit 2, the unwinding unit 2 includes a side plate 21, a winding roller 22, a guide rail 23 and a slide 24 that rises and falls along the guide rail 23, the printing unwinding roll 100 is installed on the winding roller 22, the winding roller 22 is rotatably installed on the slide 24, the guide rail 23 is vertically installed on the side plate 21, a first motor (not shown in the figure) that drives the winding roller 22 to rotate is installed on the slide 24, a second motor (not shown in the figure) is installed above the slide 24, the second motor is installed on the side plate 21, a sprocket 25 is connected to its end, a chain 27 connected to the sprocket 25 is arranged on the sprocket 25, a pull rod 28 is connected to one end of the chain 27, and a sleeve for the pull rod 28 to freely insert and move is provided on the slide 24 Hole 241, a support plate 281 is provided at the bottom of the pull rod 28, and the size of the support plate 281 is larger than the inner hole of the sleeve hole 241, so that the weight of the slide 24 is supported on the support plate 281 and moves up and down with the pull rod 28. A detection plate 7 is installed on the support plate 281, and a position sensor 8 close to the detection plate 7 is provided on the slide 24, and also includes a control processor, which is electrically connected to the position sensor 8, the first motor and the second motor. When the roll material on the roller 22 encounters an obstacle during the downward movement, the slide 24 also stops moving downward, and the position sensor 8 on the pull rod 28 continues to move downward under the drive of the first motor. When the position sensor 8 cannot sense the detection plate 7, the control processor controls the first motor and the second motor to stop running, reaching a state of equipment shutdown, thereby protecting the safety of equipment and personnel. A bottom paper unwinding roll is arranged on the frame, and the bottom paper unwinding roll is output through a bottom paper storage mechanism 20 and then combined with the printing unwinding roll.
[0020] The slide 24 is connected with a fixing block 242, the sleeve hole 241 is arranged on the fixing block 242, and the position sensor 8 is mounted on the fixing block 242. This structure can make the installation of the position sensor 8 more convenient, and the structure is firm and reliable, and the transmission cooperation with the pull rod 28 is more stable.
[0021] Specific as Figure 5As shown, an upper limit sensor 9 and a lower limit sensor 10 are also installed on the side plate 21, and the upper limit sensor 9 and the lower limit sensor 10 are used to monitor the slide 24 respectively. Of course, a sensing component for the upper limit sensor 9 and the lower limit sensor 10 to sense is provided on the slide 24. The upper limit sensor 9 and the lower limit sensor 10 are respectively controlled and connected by a control processor, and the control processor controls the slide 24 to move between the upper limit sensor 9 and the lower limit sensor 10. Through this technical solution, the range of movement of the roller 22 can be controlled to prevent the roller 22 from excessively rising or moving downward, thereby causing damage to the equipment or endangering the safety of personnel.
[0022] The bottom paper storage mechanism 20 includes a housing 200, a transverse guide rail is arranged in the housing 200, a slide plate 202 is arranged on the transverse guide rail to slide along the transverse guide rail, a positioning guide roller 203 arranged up and down is arranged on the left side of the housing 200, a slide plate 202 is arranged on the left side of the housing 200, and movable guide rollers arranged up and down are arranged on the slide plate 202, and the positioning guide rollers 203 and the movable guide rollers 204 correspond in number to each other, and a telescopic cylinder 201 is arranged on the outside of the housing 200, and the piston rod of the telescopic cylinder 201 is connected to the slide plate 202. The output of the bottom paper passes through the movable guide rollers and the positioning guide rollers 203 arranged in sequence. When the bottom paper roll is replaced, the control system of the printing press controls the telescopic cylinder 201 to move, so that the movable guide roller 204 on the slide plate 202 moves toward the positioning guide roller 203, so that a certain amount of bottom paper storage is released for continuous use by the printing press, leaving enough time for replacing the bottom paper roll, so as to achieve the technical effect of replacing the bottom paper roll without stopping the machine.
[0023] By adopting the above technical scheme, after the bottom paper unwinding roll is output, a certain amount of storage is carried out by the bottom paper storage mechanism 20. In this way, during the replacement process of the bottom paper unwinding roll, the bottom paper storage mechanism 20 continuously outputs the bottom paper, providing sufficient time for the replacement of the bottom paper unwinding roll, without stopping the machine to replace the bottom paper roll, thereby greatly improving the production efficiency. The printing unwinding material is installed on the winding roller 22. When unwinding, the chain 27 is driven by the second motor to pull the winding roller 22 on the slide 24 to move downward. After the roll or the slide 24 stops moving downward when encountering an obstacle, the pull rod 28 will still move downward through the sleeve hole 241 driven by the chain 27. At this time, the position sensor 8 arranged on the slide 24 is away from the detection plate 7. When the position sensor 8 cannot sense the detection plate 7, the control processor will stop the operation of the first motor and the second motor to avoid excessive downward movement of the roll to cause damage to the equipment or endanger the operator, thereby protecting the operator and the equipment safety.
[0024] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An intermittent, full-rotary flexographic printing press, comprising a frame, the frame being provided with an unwinding unit, characterized in that: The unwinding unit is provided with a printing material unwinding roll, and the unwinding unit comprises a side plate, a winding roller, a guide rail and a slide seat which is lifted and lowered along the guide rail, the printing material unwinding roll is installed on the winding roller, the winding roller is rotatably installed on the slide seat, the guide rail is vertically installed on the side plate, a first motor which drives the winding roller to rotate is installed on the slide seat, a second motor is installed above the slide seat, the second motor is installed on the side plate and a sprocket is connected to its end, a chain which is connected to the sprocket wheel for transmission is arranged on the sprocket, a pull rod is arranged at one end of the chain, a sleeve hole for the pull rod to freely insert is arranged on the slide seat, a support plate is arranged at the bottom of the pull rod, the size of the support plate is larger than the inner hole of the sleeve hole, a detection plate is arranged on the support plate, a position sensor close to the detection plate is arranged on the slide seat, and a control processor is also included, the control processor is electrically connected to the position sensor, the first motor and the second motor, when the position sensor cannot sense the detection plate, the control processor controls the first motor and the second motor to stop running, a bottom paper unwinding roll is arranged on the frame, and after the bottom paper unwinding roll is output, it passes through a bottom paper storage mechanism and is compounded with the printing material unwinding roll.
2. The intermittent, fully rotary flexographic printing press according to claim 1, characterized in that: The slide seat is connected with a fixing block, the sleeve hole is arranged on the fixing block, and the position sensor is installed on the fixing block.
3. The intermittent, fully rotary flexographic printing press according to claim 1, characterized in that: An upper limit sensor and a lower limit sensor are also installed on the side plate. The upper limit sensor and the lower limit sensor are respectively controlled and connected by a control processor. The slide moves at a position between the upper limit sensor and the lower limit sensor.
4. The intermittent, fully rotary flexographic printing press according to claim 1, characterized in that: The bottom paper storage mechanism includes a shell, a transverse guide rail is arranged in the shell, a slide plate sliding along the transverse guide rail is arranged, positioning guide rollers arranged up and down are arranged on the left side of the shell, the slide plate is arranged on the left side of the shell, and movable guide rollers arranged up and down are arranged on the slide plate, the positioning guide rollers and the movable guide rollers correspond to each other in number, and a telescopic cylinder is arranged on the outside of the shell, and the piston rod of the telescopic cylinder is connected to the slide plate.