Ink fountain device of web press

Abstract

The utility model discloses an ink fountain device of a web press. The ink fountain device comprises two ink fountain end plates, an ink fountain seat, an ink knife and a plurality of sets of ink quantity adjusting mechanisms, wherein the two ink fountain end plates are respectively arranged on the inner sides of two main wallboards of the press; the ink fountain seat is bridged between the two ink fountain end plates; the ink knife consists of a plurality of sections of regional ink knives; the multiple sets of ink quantity adjusting mechanisms and the multiple sections of regional ink blades are installed on the ink fountain base in a one-to-one correspondence mode. Each set of ink quantity adjusting mechanism comprises a top block hinging shaft which is bridged between the two ink fountain end plates and is positioned at the upper part of the upper notch of the ink fountain seat, an ink knife top block which is rotatably sleeved on the top block hinging shaft, an ink key motor which is arranged in the lower notch of the ink fountain seat, and a top rod which is connected to a rotating shaft of the ink key motor; the ejector rod is installed in a threaded guide hole formed in the ink fountain base, and the front end of the ejector rod abuts against the rear end face of the lower portion of the ink knife ejector block, so that the top front end of the ink knife ejector block abuts against the front portion of the bottom face of the regional ink knife. According to the utility model, the ink feeding amount of any area can be accurately adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ink fountain device of web printing press. BACKGROUND

[0002] The printing machine needs to flexibly and quickly and accurately adjust the ink amount according to the printing area during the printing process. The thickness of the ink layer is influenced by the printing speed, printing pressure, environmental factors, etc. (for example, different inks have different coloring forces due to the differences in their own properties, and the thickness of the ink layer is different in order to achieve a certain required density value). In summary, in the actual production process, the printing machine type, paper, ink characteristics, water-ink balance, printing pressure, and measuring instruments are all influenced, so that the ink amount control has great uncertainty and strong nonlinearity. In addition, when the printing color group is large, the printing width is wide, and the ink key width is small, the ink amount controller also needs to control the ink amount of multiple sub-areas at the same time. For the increasingly fast printing speed requirement, the real-time requirement of the ink amount control is very high, which makes it difficult to design a high-performance ink amount controller. Therefore, an adjusting device capable of adjusting the ink amount of the ink fountain in segments is needed. The ink fountain device in the existing web printing press does not have a fine adjustment area for the ink amount. SUMMARY

[0003] The utility model discloses a ink fountain device of web printing press, which can accurately adjust the ink amount of any area and better adjust the color depth required by the printed matter, facilitating operation and improving the appearance of the printed matter.

[0004] The utility model discloses a ink fountain device of web printing press, which can accurately adjust the ink amount of any area and better adjust the color depth required by the printed matter, facilitating operation and improving the appearance of the printed matter.

[0005] Each set of ink amount adjusting mechanism includes a top block hinged shaft, an ink knife top block, an ink key motor and a top rod.

[0006] The top block hinged shaft is connected between the two ink fountain end plates of the ink fountain and located on the upper part of the upper notch of the ink fountain seat.

[0007] The side upper part of the ink knife top block is provided with a hinge hole, so that the ink knife top block is rotatably sleeved on the top block hinge shaft;

[0008] The ink key motor is installed in the lower gap of the ink fountain seat through a motor installation support;

[0009] The top rod is connected to the rotating shaft of the ink key motor, is a screw rod and is installed in a threaded guide hole formed in the ink fountain seat, and the front end of the top rod abuts against the lower rear end surface of the ink knife top block, so that the top front end of the ink knife top block abuts against the bottom front end of the corresponding area ink knife.

[0010] The above-mentioned ink fountain device of the web printing machine, wherein the ink knife is fixed on the top surface of an ink knife bottom plate, two rear threaded blind holes are formed on the rear end surface of the ink knife bottom plate; an ink knife installation slot is formed in the middle of the top surface of the ink fountain seat, the ink knife bottom plate is installed in the ink knife installation slot, two screw through holes corresponding to the two rear threaded blind holes on the ink knife bottom plate are formed on the rear end surface of the ink fountain seat, and one ink knife adjusting screw is installed in each of the two screw through holes, and the two ink knife adjusting screws are screwed into the two rear threaded blind holes on the ink knife bottom plate in a one-to-one correspondence; at least two bottom threaded blind holes are formed on the front bottom surface of the ink knife bottom plate; two waist-shaped installation holes corresponding to the two bottom threaded blind holes on the ink knife bottom plate are formed on the ink fountain seat, and one fixing screw is installed in each of the two waist-shaped installation holes, and the two fixing screws are screwed into the two bottom threaded blind holes on the ink knife bottom plate in a one-to-one correspondence.

[0011] The above-mentioned ink fountain device of the web printing machine, wherein the ink key motor is installed on the motor support through a connecting block.

[0012] The above-mentioned ink fountain device of the web printing machine, wherein the top rod is connected to the rotating shaft of the ink key motor through a shaft coupling.

[0013] The ink fountain device of the web printing machine has the following characteristics: a plurality of ink amount adjusting mechanisms are adopted to finely adjust the gap between the piano key type ink knife and the ink fountain roller in a segmented manner, ink amount adjustment of multiple areas is realized, the demand for business ink fountain ink color adjustment is realized, and the color depth required for the printed matter is better adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a top view of the ink fountain device of the web printing machine of the utility model;

[0015] Figure 2 is Figure 1 A-A view in the figure. DETAILED DESCRIPTION

[0016] The utility model will be further described below with reference to the drawings.

[0017] Please refer to Figure 1 and Figure 2 The ink fountain device of the web offset press comprises two ink fountain end plates 1, an ink fountain seat 2, an ink blade 3 and twenty-two sets of ink amount adjusting mechanisms.

[0018] The two ink fountain end plates 1 are correspondingly installed on the inner sides of two main wall plates (not shown in the figure) of the printing machine, the outer sides of the two ink fountain end plates 1 are respectively connected with an ink fountain end shaft 12 through locking devices 11, and the two ink fountain end shafts 12 are correspondingly installed on the two main wall plates of the printing machine.

[0019] The ink fountain seat 2 is bridged between the two ink fountain end plates 1, the top surface of the ink fountain seat 2 is a downwardly inclined inclined surface, a rectangular upper notch is formed at the front end of the top surface of the ink fountain seat 2, a rectangular lower notch is formed at the rear end of the bottom surface of the ink fountain seat 2, a ink blade mounting groove is formed in the middle of the top surface of the ink fountain seat 2, and two screw through holes penetrating the rear end walls of the ink blade mounting groove are formed in the rear end surface of the ink fountain seat 2.

[0020] The ink blade 3 is fixed on the top surface of an ink blade bottom plate 30, the ink blade bottom plate 31 is installed in the ink blade mounting groove of the ink fountain seat 2, a bottom screw blind hole is formed in the front part of the bottom surface of the ink blade bottom plate 31, two rear screw blind holes corresponding to the two screw through holes in the ink fountain seat 2 are formed in the rear end surface of the ink blade bottom plate 31, two fixing screws 33 are respectively installed in the two waist-shaped mounting holes in the ink fountain seat 2, the two fixing screws 33 are correspondingly screwed into the two bottom screw blind holes in the ink blade bottom plate 31, and the two ink blade adjusting screws 32 are correspondingly screwed into the two rear screw blind holes in the ink blade bottom plate 31 through the two screw through holes in the ink fountain seat 2. After the adjustment is completed, the ink blade bottom plate 31 is fixed on the ink fountain seat 2 through the fixing screws 33; the ink blade 3 is divided into twenty-two regional ink blades 30 from the whole ink blade through a plurality of transverse cutting lines.

[0021] The ink fountain device of the web offset press is characterized in that: the ink fountain seat 2 is provided with twenty-two sets of ink amount adjusting mechanisms corresponding to the twenty-two segmental ink knives 30; each set of ink amount adjusting mechanism comprises a top block hinged shaft 4, an ink knife top block 5, an ink key motor 6 and a top rod 7; the top block hinged shaft 4 is connected between the two ink fountain end plates 1 of the ink fountain and located on the upper part of the upper gap of the ink fountain seat 2; the upper part of the side surface of the ink knife top block 5 is provided with a hinged hole, so that the ink knife top block 5 is rotatably sleeved on the top block hinged shaft 4; the ink key motor 6 is installed in the lower gap of the ink fountain seat 2 through a motor installation support 61 and a connecting block 62; the top rod 7 is connected to the rotating shaft of the ink key motor 6 through a shaft coupling 70, the top rod 7 is a screw rod and is installed in the threaded guide hole of the ink fountain seat 2, and the front end of the top rod 7 abuts against the rear end surface of the lower part of the ink knife top block 5, so that the front end of the ink knife top block 5 abuts against the front end of the corresponding segmental ink knife 30.

[0022] The adjusting method of each set of ink amount adjusting mechanism in the ink fountain device of the web offset press is as follows: when the ink key motor 6 rotates forward, the top rod 7 is driven to rotate, the top rod 7 pushes the ink knife top block 5 to rotate around the top block hinged shaft 4, so that the ink knife top block 5 pushes the front end of the corresponding segmental ink knife 30 upward, and the gap δ between the front end of the corresponding segmental ink knife 3A and the ink fountain roller 10 is the smallest, that is, the ink output of the ink fountain is the smallest. Conversely, when the ink key motor 6 reverses, the ink knife top block 5 rotates around the top block hinged shaft 4 by relying on the self-weight, so that the gap δ between the front end of the corresponding segmental ink knife 3A and the ink fountain roller 10 becomes larger, that is, the ink output of the ink fountain becomes larger.

[0023] Since the ink fountain ink knife 3 of the web offset press is composed of twenty-two segmental ink knives 30, each segmental ink knife 30 is provided with an independent ink amount adjusting mechanism, and then the ink output of each segmental ink knife is finely adjusted through the above adjusting method.

[0024] The ink fountain device of the web offset press is characterized in that: the whole ink fountain device is opened and away from the ink fountain roller 10 or closed and close to the ink fountain roller 10 through the two locking devices 12, so that the gap between the arc surface of the front end of the ink knife end plate 1 and the outer surface of the ink fountain roller 10 is ≤0.02mm; the whole ink fountain device can also be detached from the two main wall plates of the printing machine, so that the replacement and maintenance of the whole ink fountain device are facilitated.

[0025] The above embodiments are only used for illustrating the utility model, and are not limited to the utility model. Those skilled in the art can make various transformations or modifications without departing from the spirit and scope of the utility model, therefore, all equivalent technical solutions should belong to the scope of the utility model, which is limited by the claims.

Claims

1. An ink fountain device for a web-fed printing press, comprising two ink fountain end plates, an ink fountain seat, an ink knife, and multiple sets of ink volume adjustment mechanisms; the outer surfaces of the two ink fountain end plates are respectively mounted on the inner sides of two main wall plates of the printing press via ink fountain end shafts; the ink fountain seat spans between the two ink fountain end plates, the top surface of the ink fountain seat is a downward sloping surface, a rectangular upper notch is formed at the front end of the top surface of the ink fountain seat, and a rectangular lower notch is formed at the rear end of the bottom surface of the ink fountain seat; the ink knife is mounted on the top surface of the ink fountain seat, and the ink knife is divided into multiple sections by multiple transverse cutting lines from a single ink knife; multiple sets of ink volume adjustment mechanisms are mounted on the ink fountain seat in a corresponding manner to the multiple sections of ink knife; characterized in that... Each ink volume adjustment mechanism includes a top block hinge shaft, an ink knife top block, an ink key motor, and a top rod; The top block hinge shaft spans between the two ink fountain end plates and is located above the upper notch of the ink fountain seat; A hinge hole is provided on the upper side of the ink knife top block, so that the ink knife top block can be rotatably fitted onto the top block hinge shaft. The ink key motor is mounted in the lower notch of the ink fountain holder via a motor mounting bracket; The push rod is connected to the rotating shaft of the ink key motor. The push rod is a screw and is installed in the threaded guide hole opened on the ink fountain seat. The front end of the push rod abuts against the lower rear end face of the ink knife top block, so that the top front end of the ink knife top block abuts against the bottom front end of the corresponding area ink knife.

2. The ink fountain device of the web printing press according to claim 1, characterized in that, The ink scalpel is fixed to the top surface of an ink scalpel base plate, and two threaded blind holes are formed on the rear end face of the ink scalpel base plate. An ink scalpel mounting groove is formed in the middle of the top surface of the ink fountain base, and the ink scalpel base plate is installed in the ink scalpel mounting groove. Two screw holes are formed on the rear end face of the ink fountain base, corresponding one-to-one with the two threaded blind holes on the ink scalpel base plate. An ink scalpel adjusting screw is installed in each of the two screw holes, and the two ink scalpel adjusting screws are screwed into the two threaded blind holes on the ink scalpel base plate. At least two threaded blind holes are formed on the front bottom face of the ink scalpel base plate. Two oblong mounting holes are formed on the ink fountain base, corresponding one-to-one with the two threaded blind holes on the ink scalpel base plate. A fixing screw is installed in each of the two oblong mounting holes, and the two fixing screws are screwed into the two threaded blind holes on the ink scalpel base plate.

3. The ink fountain device of the web printing press according to claim 1, characterized in that, The ink key motor is mounted on the motor mounting bracket via a connecting block.

4. The ink fountain device of the web printing press according to claim 1, characterized in that, The push rod is connected to the shaft of the ink key motor via a coupling.

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