Dampening position adjusting device of offset press

Abstract

The utility model discloses a dampening position adjusting device of an offset press, which comprises two side plates, inclined guide grooves are respectively arranged on the two side plates, sliding seats sliding along the guide grooves are arranged in the guide grooves, and a fountain roller, a metering roller, a dampening roller, a dampening roller and a liquid collecting groove support are arranged between the sliding seats. The liquid collecting groove support is located below the fountain roller, the metering roller, the dampening roller and the dampening roller, the fountain roller is close to the circumferential wall of the metering roller, a fountain solution containing groove is formed in the gap between the fountain roller and the metering roller, one side of the dampening roller abuts against the metering roller, the other side of the dampening roller abuts against the dampening roller, position adjustment of the sliding base is driven by a first servo motor, and a fixing plate is connected between side plates. A threaded hole in threaded connection with the ball screw is formed in the fixing plate. Therefore, the technical effects of convenient adjustment and reliable and stable structure are achieved.

Description

Technical Field

[0001] The utility model relates to a component on an offset printing machine, in particular to a dampening position regulating device of the offset printing machine. Background Art

[0002] The main function of the dampening mechanism on the offset printing machine is to apply dampening liquid (such as alcohol) around the image and text on the plate roller. In offset printing, the role of the dampening liquid is mainly reflected in three aspects: one is to form a water film on the blank part of the plate; the second is to replenish the hydrophilic layer damaged during the printing process; the third is to reduce the surface temperature of the plate.

[0003] Since the outer diameter of the plate roller changes according to the printing requirements of graphics and texts, after replacing different plate rollers, the diameter of the plate roller changes, the interval between the plate roller and the dampening mechanism changes, and the position of the dampening mechanism also needs to be adaptively adjusted. Traditional dampening mechanism adjustments are to adjust both sides manually, which is time-consuming and laborious, greatly affecting the progress and difficulty of debugging, and requires experienced operators to complete in time, which brings uncertainty to production and affects production efficiency. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a dampening position adjustment device for an offset printing press which is easy to adjust and has a reliable and stable structure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dampening position adjustment device for an offset printing press, comprising two side plates, inclined guide grooves are respectively provided on the two side plates, a slide seat sliding along the guide groove is provided in the guide groove, a water hopper roller, a metering roller, a water string roller, a water roller and a liquid collecting tank support are installed between the slide seats, the liquid collecting tank support is located below the water hopper roller, the metering roller, the water string roller and the water roller, the water hopper roller is close to the peripheral wall of the metering roller and the gap between them forms a dampening liquid placement groove, one side of the water string roller abuts on the metering roller , the other side abuts against the water roller, a driving rod is provided between the side plates, the driving rod is provided with a first bevel gear corresponding to the slide seat one by one, a ball screw is threadedly connected to the slide seat, one end of the ball screw is provided with a second bevel gear meshing with the first bevel gear, the other end of the ball screw is threadedly connected to the adjacent slide seat, the rotation of the driving rod is driven by a first servo motor, a fixing plate is connected between the side plates, and a threaded hole threadedly connected to the ball screw is provided on the fixing plate.

[0006] A second servo motor is mounted on the outer wall of one of the slides, and the output end of the second servo motor is transmission-connected to the water string roller. A third servo motor is mounted on the outer wall of the other slide, and the output end of the third servo motor is transmission-connected to the water bucket roller. The water bucket roller and the metering roller are connected via gear transmission.

[0007] The slide seat is provided with a rotatable rotating arm, the water impinging roller is installed at one end of the rotating arm, and a pressing cylinder is also installed on the slide seat, and the movable rod of the pressing cylinder is connected to the other end of the rotating arm.

[0008] The structure of the utility model enables, after replacing the printing plate roller, the first bevel gear on the driving rod is driven to rotate by the first servo motor, and then the slide is driven to adjust its position by the ball screw, so that the water bucket roller, metering roller, water string roller, water application roller and liquid collecting tank support between the slides are adjusted and moved with the slide, so that the water application roller abuts against the printing plate roller at a reliable position, so that the dampening liquid is reliably transmitted to the printing plate roller, thus achieving the technical effect of convenient adjustment and reliable and stable structure.

[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 front view of a specific implementation method of the utility model;

[0011] Figure 2 It is a cutaway structural diagram of a specific implementation method of the utility model;

[0012] Figure 3 for Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0013] 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.

[0014] like Figure 1-Figure 3As shown, this embodiment discloses a dampening position adjustment device for an offset printing press, comprising two side plates 6, on which inclined guide grooves 61 are respectively provided, and in which a slide seat 7 sliding along the guide grooves 61 is provided, and between the slide seats 7 are installed a water hopper roller 1, a metering roller 2, a water string roller 3, a water application roller 4 and a liquid collecting tank support 5, the liquid collecting tank support 5 is located below the water hopper roller 1, the metering roller 2, the water string roller 3, and the water application roller 4, the water hopper roller 1 is close to the peripheral wall of the metering roller 2, and the gap therebetween forms a dampening liquid placement groove, the dampening liquid is placed in the dampening liquid placement groove, and when the dampening liquid drips, it can fall into the liquid collecting tank support 5 for collection, and one side of the water string roller 3 abuts against the metering roller 2 , the other side abuts against the water roller 4, a driving rod 30 is provided between the side plates 6, and a first bevel gear 8 corresponding to the slide seat 7 is provided on the driving rod 30, and a ball screw 10 is threadedly connected to the slide seat 7, and one end of the ball screw 10 is provided with a second bevel gear 9 meshing with the first bevel gear 8 for transmission, and the other end of the ball screw 10 is threadedly connected to the adjacent slide seat 7, and the rotation of the driving rod 30 is driven by the first servo motor 50, so that the first servo motor 50 can drive the ball screw 10 to rotate and drive the slide seat to move along the guide groove, and a fixing plate 40 is connected between the side plates, and a threaded hole threadedly connected to the ball screw 10 is provided on the fixing plate 40.

[0015] A second servo motor 60 is mounted on the outer wall of one of the slides 7, and the output end of the second servo motor 60 is connected to the water roller 3. A third servo motor 70 is mounted on the outer wall of the other slide 7, and the output end of the third servo motor 70 is connected to the water hopper roller 1. The water hopper roller 1 and the metering roller 2 are driven by gears. This structure makes the rotation of the water roller 3 and the water hopper roller 1 accurate and reliable, improves the effect of the water roller 3 on evenly beating the fountain solution, and the fountain roller 1 has better stability in outputting the fountain solution.

[0016] A rotatable rotating arm 80 is provided on the slide 7, and the watering roller 4 is mounted on one end of the rotating arm 80. A pressing cylinder 90 is also mounted on the slide 7, and a movable rod of the pressing cylinder 90 is connected to the other end of the rotating arm 80. This structure allows the watering roller 4 to be more reliably abutted against the plate roller through the drive of the pressing cylinder 90.

[0017] By adopting the above technical scheme, after replacing the plate roller, the first bevel gear 8 on the driving rod 30 is driven to rotate by the first servo motor 50, and then the slide 7 is driven to adjust its position by the ball screw 10. In this way, the water hopper roller 1, metering roller 2, water string roller 3, water application roller 4 and liquid collecting tank support 5 between the slide 7 are adjusted and moved with the slide 7, so that the water application roller 4 abuts against the plate roller at a reliable position, so that the dampening solution is reliably transmitted to the plate roller, thereby achieving the technical effect of convenient adjustment and reliable and stable structure.

[0018] 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.

[0019] 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. A dampening position adjustment device for an offset printing press, comprising two side plates, characterized in that: An inclined guide groove is respectively provided on the two side plates, and a slide seat sliding along the guide groove is provided in the guide groove, and a water bucket roller, a metering roller, a water string roller, a water application roller and a liquid collecting tank support are installed between the slide seats, and the liquid collecting tank support is located below the water bucket roller, the metering roller, the water string roller and the water application roller. The water bucket roller is close to the peripheral wall of the metering roller and the gap therebetween forms a fountain solution placement groove, one side of the water string roller abuts on the metering roller, and the other side abuts on the water application roller, a driving rod is provided between the side plates, a first bevel gear corresponding to the slide seat is provided on the driving rod, a ball screw is threadedly connected to the slide seat, one end of the ball screw is provided with a second bevel gear meshing with the first bevel gear for transmission, and the other end of the ball screw is threadedly connected to the adjacent slide seat, and the rotation of the driving rod is driven by a first servo motor, and a fixing plate is connected between the side plates, and a threaded hole threadedly connected to the ball screw is provided on the fixing plate.

2. The dampening position adjusting device for an offset printing press according to claim 1, characterized in that: A second servo motor is mounted on the outer wall of one of the slides, and the output end of the second servo motor is transmission-connected to the water string roller. A third servo motor is mounted on the outer wall of the other slide, and the output end of the third servo motor is transmission-connected to the water bucket roller. The water bucket roller and the metering roller are connected via gear transmission.

3. The dampening position adjusting device for an offset printing press according to claim 1, characterized in that: The slide seat is provided with a rotatable rotating arm, the water impinging roller is installed at one end of the rotating arm, and a pressing cylinder is also installed on the slide seat, and the movable rod of the pressing cylinder is connected to the other end of the rotating arm.

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