Precise ink supply mechanism for printing machine

Abstract

The precise ink supply mechanism comprises an ink tower, a driving rubber roller, a driven rubber roller set and an ink transfer assembly, the driving rubber roller rotates to drive the driven rubber roller set to rotate, the ink transfer assembly comprises an ink receiving roller, a stepping motor and a swing roller assembly, one shaft end of the ink receiving roller is connected with the output end of the stepping motor, and the other shaft end of the ink receiving roller is connected with the swing roller assembly. The ink receiving roller is directly driven to rotate through the stepping motor, the stepping motor can accurately control the rotating speed of the ink receiving roller, it is guaranteed that the ink receiving roller rotates at a constant speed, and therefore ink can be evenly distributed on the surface of the ink receiving roller; when a swing roller in the swing roller assembly makes contact with the surface of the ink receiving roller, the ink receiving roller synchronously drives the swing roller to rotate at a constant speed, it is guaranteed that the ink is evenly distributed on the surface of the swing roller, the ink is conveyed and coated to the surface of the driving rubber roller, ink feeding is more uniform and consistent, and the printing efficiency is improved. And the printing quality is prevented from being influenced by non-uniform coating.

Description

Technical Field

[0001] The utility model belongs to the technical field of ink supply for printing presses, and particularly relates to a precision ink supply mechanism for a printing press. Background Art

[0002] In the existing ink supply mechanism of a printing press, the main ink roller (the roller at the outlet of the ink tower) and the large rubber roller in the printing mechanism are driven by the same rotary drive mechanism. This rotary drive mechanism is usually connected to the main ink roller through a hand-operated stepless transmission to drive the rotation of the main ink roller; however, this driving method will generate a large manual operation error during the operation process, which easily makes the ink on the main ink roller uneven, resulting in uneven ink shades during the printing process and seriously affecting the printing quality; in addition, the main ink shaft and the large rubber roller are synchronously driven, and the large rubber roller and other rubber rollers are driven by friction. The torque generated during the friction drive process may exceed the torque range that the hand-operated stepless transmission can withstand, thereby causing damage to the transmission; moreover, the existing ink supply mechanism of the printing press is prone to uneven feeding, resulting in uneven shades of the feeding on the surface of the printing material at different positions, leading to uneven coating and greatly affecting the printing quality. Summary of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a precision ink supply mechanism for a printing press, aiming to solve the technical problem that the uneven ink shades in the existing technology affect the printing quality.

[0005] (2) Technical Solutions

[0006] The utility model provides a precision ink supply mechanism for a printing press, which includes an ink tower, a driving rubber roller, a driven rubber roller group, and an ink transfer component assembled between a first mounting plate and a second mounting plate. The driving rubber roller rotates to drive the rotation of the driven rubber roller group. The ink transfer component includes an ink receiving roller located at the ink outlet position of the ink tower, a stepping motor for driving the rotation of the ink receiving roller, and a swing roller component for conveying the ink on the ink receiving roller to the driven rubber roller group. One shaft end of the ink receiving roller is supported and installed on the first mounting plate and connected to the output end of the stepping motor, and the other shaft end is supported and installed on the second mounting plate and extends out of the second mounting plate and is sequentially sleeved with a cam and an adjustment knob. A swing arm component is arranged outside the second mounting plate. The swing arm component includes a swing arm. The swing arm is located directly below the cam. One end of the swing roller component is pivotally connected to the first mounting plate, and the other end extends out of the second mounting plate and is connected to one end of the swing arm. The swing roller component reciprocally swings under the action of the cam and the swing arm component.

[0007] Preferably, the swing roller assembly includes a swing roller, a swing rotating shaft, and two support members. The upper ends of the two support members are respectively fixedly installed on the two shaft ends of the swing roller, and the lower ends of the two support members are respectively sleeved and fixed on the swing rotating shaft. One end of the swing rotating shaft is pivotally connected to the first mounting plate, and the other end extends outside the second mounting plate and is connected to one end of the swing arm.

[0008] Preferably, the swing arm assembly further includes an elastic reset member, a reset support rod, a limit support rod, and a limit abutting plate. The reset support rod and the limit support rod are both fixedly installed on the outer surface of the second mounting plate. One end of the elastic reset member is connected to the upper end surface of the swing arm, and the other end is connected to the reset support rod. The swing arm swings reciprocally under the action of the cam and the elastic reset member, thereby driving the swing roller assembly to swing reciprocally. One end of the limit abutting plate is connected to the end of the swing arm away from the swing rotating shaft, and the other end of the limit abutting plate is provided with an abutting groove capable of abutting against the limit support rod.

[0009] Preferably, the driven roller group includes an upper sliding roller, a lower sliding roller, a first ink leveling roller for conveying the ink on the ink transfer assembly to the driving rubber roller, and a second ink leveling roller for evenly coating the ink on the driving rubber roller. The upper sliding roller, the lower sliding roller, the first ink leveling roller, and the second ink leveling roller are all arranged relatively parallel to the driving rubber roller. The upper sliding roller is located on the side of the swing roller assembly away from the ink receiving roller. The lower sliding roller is located between the upper sliding roller and the driving rubber roller below. The second ink leveling roller is located on the lower side of the driving rubber roller. The first ink leveling roller and the second ink leveling roller both move closely along the surface of the driving rubber roller.

[0010] Preferably, both ends of the upper sliding roller and the lower sliding roller are provided with sliding sliders. The first mounting plate and the second mounting plate are symmetrically provided with sliding chutes for assembling the sliding sliders. The upper sliding roller and the lower sliding roller are stacked and slidably installed in the sliding chutes. The upper sliding roller and the lower sliding roller perform axial reciprocating movement between the first mounting plate and the second mounting plate while rotating.

[0011] Preferably, the upper sliding roller includes a first fixed shaft with the sliding sliders connected and installed at both ends, and a first roller barrel movably sleeved outside the first fixed shaft. Reciprocating chutes are provided at both ends of the first fixed shaft. Inner surfaces at both ends of the first roller barrel are provided with rotating barrels sleeved on the first fixed shaft. Reciprocating sliders for cooperating with the reciprocating chutes are arranged on the rotating barrels. One end of the reciprocating slider protrudes from the inner surface of the rotating barrel and slides in the reciprocating chute.

[0012] Preferably, assembly grooves for installing the rotating drum are provided on the inner surfaces of both ends of the first roller, and a limiting groove is provided on the inner surface of one side of the assembly groove close to the end of the first fixed shaft, and a clamp for limiting the lateral movement of the rotating drum is installed in the limiting groove, and the end of the reciprocating slider away from the reciprocating slide groove protrudes from the outer surface of the rotating drum and contacts the inner surface of the first roller, and a clamping groove for limiting the reciprocating slider is provided at the contact point between the inner surface of the first roller and the reciprocating slider.

[0013] Preferably, the lower sliding roller includes a second fixed shaft with two ends connected to the movable slider and a second roller rotatably sleeved on the outside of the second fixed shaft, and the second roller rotates in the opposite direction to the first roller of the upper sliding roller.

[0014] Preferably, the first ink uniformly distributing roller and the second ink uniformly distributing roller perform axial reciprocating motion between the first mounting plate and the second mounting plate while rotating, the first ink uniformly distributing roller and the second ink uniformly distributing roller can be detachably mounted between the first mounting plate and the second mounting plate, and mounting seats and adjusting nuts are provided at both ends of the first ink uniformly distributing roller and the second ink uniformly distributing roller.

[0015] Preferably, a driving shaft is inserted into the driving rubber roller, and a driving gear is sleeved on the driving shaft.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The ink receiving roller is directly driven to rotate by a stepper motor. The stepper motor can accurately control the rotation speed of the ink receiving roller to ensure that the ink receiving roller rotates at a uniform speed, so that the ink in the ink tower can be evenly distributed on the surface of the ink receiving roller. The ink receiving roller then drives the swing roller assembly to swing back and forth through the cam and the swing arm, so that the swing roller assembly continuously transfers ink between the ink receiving roller and the driven roller group. When the swing roller in the swing roller assembly contacts the surface of the ink receiving roller, the ink receiving roller synchronously drives the swing roller to rotate at a uniform speed, thereby ensuring that the ink is evenly distributed on the surface of the swing roller. The ink is then transferred from the surface of the swing roller to the surface of the driving rubber roller. Through such a setting, the ink feeding can be guaranteed to be more uniform and consistent, avoiding uneven coating to affect the printing quality.

[0019] 2. By movably arranging the two sliding rollers relative to the first mounting plate and the second mounting plate, when the sliding rollers need to be cleaned regularly, the upper sliding roller and the lower sliding roller can be directly slid out along the sliding groove through the sliding slider, which makes loading and unloading simple and convenient, and improves the cleaning and loading and unloading efficiency.

[0020] 3. By axially reciprocatingly moving the upper sliding roller, the lower sliding roller, the first ink distributing roller and the second ink distributing roller, while the upper sliding roller rotates and conveys the ink on the swing roller, it reciprocates and swings, so that the ink is evenly coated when received on the first roller. The first ink distributing roller receives the ink on the lower sliding roller and conveys it to the driving rubber roller while reciprocatingly moving, making the ink on the driving rubber roller more evenly coated. The second ink distributing roller further spreads the ink on the driving rubber roller, thus further avoiding the occurrence of uneven printing ink shades. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structure diagram of the present utility model.

[0022] Figure 2 It is a three-dimensional structure diagram of the ink transfer component installation state of the present utility model.

[0023] Figure 3 It is a right view of the ink transfer component installation state of the present utility model.

[0024] Figure 4 It is a three-dimensional structure diagram of the partial structure removal state of the present utility model.

[0025] Figure 5 It is an exploded state diagram of the upper sliding roller of the present utility model and a partially enlarged structure diagram.

[0026] Figure 6 It is a left view of the assembled state of the upper sliding roller of the present utility model.

[0027] Figure 7 is Figure 6 a partial structure cross-sectional view at A-A in

[0028] The marks of each component in the drawings are as follows:

[0029] 1. First mounting plate; 2. Second mounting plate; 21. Limit support rod; 211. Limit abutting plate; 22. Reset support rod; 221. Elastic reset member; 23. Camming chute; 3. Ink tower; 4. Driving rubber roller; 41. Driving shaft; 42. Driving gear; 5. Driven rubber roller group; 51. Upper sliding roller; 511. First fixed shaft; 5111. Reciprocating chute; 512. First roller; 5121. Assembly groove; 5122. Limit groove; 5123. Clamp; 5124. Positioning groove; 513. Rotating cylinder; 514. Reciprocating slider; 52. Lower sliding roller; 521. Second fixed shaft; 522. Second roller; 53. Camming slider; 54. First ink distributing roller; 541. Mounting seat; 542. Adjusting nut; 55 - Second ink distributing roller; 6. Ink transfer component; 61. Ink receiving roller; 611. Cam; 612. Positioning knob; 62. Stepper motor; 63. Swing roller; 631. Support member; 632. Swing rotating shaft; 633. Swing arm. Specific embodiments

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. For the sake of clarity, many practical details will be described together in the following description.

[0031] Please refer to Figures 1-7 , the present utility model discloses a precision ink supply mechanism for a printing press, which includes an ink tower 3, a driving rubber roller 4, a driven rubber roller group 5 and an ink transfer assembly 6 assembled between a first mounting plate 1 and a second mounting plate 2. The driving rubber roller 4 rotates to drive the driven rubber roller group 5 to rotate. The ink transfer assembly 6 includes an ink receiving roller 61 located at the ink outlet position of the ink tower 3, a stepping motor 62 for driving the ink receiving roller 61 to rotate, and a swing roller assembly for conveying the ink on the ink receiving roller 61 to the driven rubber roller group 5. One shaft end of the ink receiving roller 61 is supported and installed on the first mounting plate 1 and connected to the output end of the stepping motor 62, and the other shaft end is supported and installed on the second mounting plate 2 and extends outside the second mounting plate 2 and is sequentially sleeved with a cam 611 and an adjustment knob 612. A swing arm assembly is arranged on the outer side of the second mounting plate 2. The swing arm assembly includes a swing arm 633. The swing arm 633 is located directly below the cam 611. One end of the swing roller assembly is pivotally connected to the first mounting plate 1, and the other end extends outside the second mounting plate 2 and is connected to one end of the swing arm 633. The swing roller assembly reciprocates under the action of the cam 611 and the swing arm assembly.

[0032] In the present utility model, the stepping motor 62 directly drives the ink receiving roller 61 to rotate. The stepping motor 62 can accurately control the rotation speed of the ink receiving roller 61 to ensure that the ink receiving roller 61 rotates at a constant speed, so that the ink in the ink tower 3 can be evenly distributed on the surface of the ink receiving roller 61. The ink receiving roller 61 then drives the swing roller assembly to swing back and forth through the cam 611 and the swing arm 633, so as to realize the continuous transfer of ink between the swing roller assembly and the ink receiving roller 61 and the driven roller group. When the swing roller assembly contacts the surface of the ink receiving roller 61, the ink receiving roller 61 synchronously drives the swing roller assembly to rotate at a constant speed, so as to ensure that the ink is evenly distributed on the surface of the swing roller assembly. The ink is then transferred and coated from the surface of the swing roller assembly to the surface of the driving rubber roller 4. Through such a setting, it can be ensured that the ink feeding is more uniform and consistent, and the uneven coating is avoided from affecting the printing quality.

[0033] The swing roller assembly in the present utility model includes a swing roller 63, a swing rotating shaft 632, and two support members 631. The upper ends of the two support members 631 are respectively fixedly installed on the two shaft ends of the swing roller 63, and the lower ends of the two support members 631 are respectively sleeved and fixed on the swing rotating shaft 632. One end of the swing rotating shaft 632 is pivotally connected to the first mounting plate 1, and the other end extends out of the second mounting plate 2 and is connected to one end of the swing arm 633. By providing the support members 631, the swing roller 63 is supported and fixed on the swing rotating shaft 632, so that the rotation of the swing rotating shaft 632 can drive the swing roller 63 to swing.

[0034] The swing arm assembly in the present utility model further includes an elastic reset member 221, a reset support rod 22, a limit support rod 21, and a limit abutting plate 211. The reset support rod 22 and the limit support rod 21 are both fixedly installed on the outer surface of the second mounting plate 2. One end of the elastic reset member 221 is connected to the upper end surface of the swing arm 633, and the other end is connected to the reset support rod 22. The swing arm 633 reciprocally swings under the action of the cam 611 and the elastic reset member 221, thereby driving the swing roller assembly to reciprocally swing. One end of the limit abutting plate 211 is connected to the end of the swing arm 633 away from the swing rotating shaft 632, and a abutting groove capable of abutting against the limit support rod 21 is provided at the other end of the limit abutting plate 211. When it is necessary to limit the upward movement of the swing arm 633, since the limit support rod 21 is fixed on the outer surface of the second mounting plate 2, the abutting groove on the limit abutting plate 211 and the limit support rod 21 can be abutted against each other to realize the limit fixation of one end of the swing arm.

[0035] When using the ink supply mechanism of the present utility model for ink supply, the stepping motor 62 operates to drive the ink receiving roller 61 to rotate. The ink receiving roller 61 is located at the ink outlet position of the ink tower 3 and is arranged closely against the edge of the ink tower 3. The ink on the ink tower 3 is rolled and received onto the surface of the ink receiving roller 61 through the rotation of the ink receiving roller 61. When the ink receiving roller 61 rotates, it drives the cam 611 located at one end of the second mounting plate 2 to rotate synchronously. When the convex position of the cam 611 rotates to contact the swing arm 633, the cam 611 presses down the swing arm 633. Since one end of the swing arm 633 is pivotally connected to one end of the swing shaft 632, and one end of the swing shaft 632 is supported at a relative position on the second mounting plate 2, when the swing arm 633 is pressed by the cam 611, the end of the swing arm 633 away from the swing shaft 632 moves downward. At the same time, the elastic reset member 221 is stretched, and the imparted kinetic energy is converted into elastic potential energy, thereby driving the swing shaft 632 to rotate clockwise. The swing shaft 632 drives the swing roller 63 to swing clockwise through the support member 631. Thus, the swing roller 63 closely adheres to the ink receiving roller 61 and is driven to rotate synchronously by the rotation of the ink receiving roller 61, so that the ink on the ink receiving roller 61 adheres to the surface of the swing roller 63. As the ink receiving roller 61 further rotates, the convex position of the cam 611 rotates away to cancel the pressure on the swing arm 633. The elastic potential energy of the elastic reset member 221 is converted into kinetic energy, causing the end of the swing arm 633 away from the swing shaft 632 to move upward and reset. Thus, the swing arm 633 drives the swing shaft 632 to rotate counterclockwise, and then drives the swing roller 63 to move counterclockwise away from the ink receiving roller 61 and move close to and adhere to the driven roller group. At the same time, the limiting groove at one end of the limiting contact plate 211 abuts against the limiting support rod 21, limiting the upward movement trend of the swing arm 633 driven by the elastic reset member 221, thereby increasing the stability of the swing of the swing arm 633, and further ensuring the stability of the reciprocating movement of the swing roller 63;

[0036] When the driving rubber roller 4 rotates to drive the driven roller group to rotate, and then drives the swing roller 63 in close contact with the driven roller group to rotate, the ink on the surface of the swing roller 63 is sequentially transferred to the surfaces of the driven roller group and the driving rubber roller 4, thus completing an ink supply operation. As the stepping motor 62 continuously drives the ink receiving roller 61 to rotate, the swing roller 63 also continuously transfers ink between the ink receiving roller 61 and the driven roller group. Thus, the ink can be continuously and uninterruptedly coated on the surface of the driving rubber roller 4, and the feeding is more uniform and consistent, avoiding uneven coating from affecting the printing quality.

[0037] In the driven roller set of the present utility model, it includes an upper sliding roller 51, a lower sliding roller 52, a first ink leveling roller 54 for conveying the ink on the ink transfer assembly 6 to the driving rubber roller 4, and a second ink leveling roller 55 for evenly coating the ink on the driving rubber roller 4. The upper sliding roller 51, the lower sliding roller 52, the first ink leveling roller 54, and the second ink leveling roller 55 are all arranged relatively parallel to the driving rubber roller 4. The upper sliding roller 51 is located on the side of the swing roller assembly relatively far from the moving direction of the ink receiving roller 61. The lower sliding roller 52 is located below the upper sliding roller 51. The first ink leveling roller 54 is located on the lower side of the lower sliding roller 52. The first ink leveling roller 54 and the second ink leveling roller 55 both move closely along the surface of the driving rubber roller 4. During use, when the driving rubber roller 4 rotates, it drives the first ink leveling roller 54 and the second ink leveling roller 55 to rotate. The first ink leveling roller 54 drives the lower sliding roller 52 to rotate, and the lower sliding roller 52 further drives the upper sliding roller 51 to rotate. When the swing roller 63 in the swing roller assembly swings to be in contact with the upper sliding roller 51, the swing roller 63 is driven to rotate under the rotation of the upper sliding roller 51. Thus, the ink on the swing roller 63 is sequentially transported to the upper sliding roller 51, the lower sliding roller 52, the first ink leveling roller 54, and the driving rubber roller 4 in turn.

[0038] In the embodiments of the present utility model, both ends of the upper sliding roller 51 and the lower sliding roller 52 are provided with sliding sliders 53. The mounting plate one and the mounting plate two are symmetrically provided with sliding chutes 23 for assembling the sliding sliders 53. The upper sliding roller 51 and the lower sliding roller 52 are stacked and slidably mounted in the sliding chutes 23. When the upper sliding roller 51 and the lower sliding roller 52 rotate, they move axially back and forth between the first mounting plate 1 and the second mounting plate 2. Considering that the volume of the equipment should not be too large, the number of sliding rollers is set to two. When the upper sliding roller 51 located at the relatively upper position is in contact with the swing roller 63 in the ink transfer assembly 6, it can transfer the ink on the swing roller 63. Since the upper sliding roller 51 and the lower sliding roller 52 are stacked and mounted in the sliding chutes 23 up and down, under the influence of gravity, the upper sliding roller 51 and the lower sliding roller 52 always remain in contact with each other, and the lower sliding roller 52 located at the relatively lower position also always remains in contact with the surface of the driving rubber roller 4 under the influence of gravity.

[0039] In the embodiments of the present utility model, by movably arranging the two sliding rollers relative to the first mounting plate 1 and the second mounting plate 2, when it is necessary to regularly clean the sliding rollers, the upper sliding roller 51 and the lower sliding roller 52 can be directly slid out along the sliding chutes 23 through the sliding sliders 53. The loading and unloading are simple and convenient, improving the cleaning and loading / unloading efficiency.

[0040] In the embodiment of the present utility model, the upper sliding shifting roller 51 includes a first fixed shaft 511 with both ends connected to and installed with the shifting slider 53, and a first roller 512 movably sleeved outside the first fixed shaft 511. Reciprocating chutes 5111 are provided at both ends of the first fixed shaft 511. Rotating cylinders 513 sleeved on the first fixed shaft 511 are arranged on the inner surfaces at both ends of the first roller 512. Reciprocating sliders 514 used in cooperation with the reciprocating chutes 5111 are arranged on the rotating cylinders 513. One end of the reciprocating slider 514 protrudes from the inner surface of the rotating cylinder 513 and slides in the reciprocating chute 5111. By the spiral sliding of one end of the reciprocating slider 514 in the reciprocating chute 5111, the first fixed shaft 511 and the rotating cylinder 513 rotate relative to each other and move horizontally and reciprocally. Furthermore, the first fixed shaft 511 rotates relative to the first roller 512 and moves horizontally and reciprocally.

[0041] Specifically, assembly grooves 5121 for installing the rotating cylinders 513 are provided on the inner surfaces at both ends of the first roller 512. A limiting groove 5122 is provided on the inner surface of one side of the assembly groove 5121 close to the end of the first fixed shaft 511. A clamp 5123 for limiting the horizontal movement of the rotating cylinder 513 is installed in the limiting groove 5122. The end of the reciprocating slider 514 away from the reciprocating chute 5111 protrudes from the outer surface of the rotating cylinder 513 and contacts the inner surface of the first roller 512. A positioning groove 5124 for installing and limiting the reciprocating slider 514 in cooperation is provided at the contact position between the inner surface of the first roller 512 and the reciprocating slider 514. When the upper sliding shifting roller 51 rotates, that is, when the first roller 512 rotates, the reciprocating slider 514 has a tendency to rotate synchronously with the rotation of the first roller 512 under the positioning action of the positioning groove 5124. However, since the other end of the reciprocating slider 514 is limited in the reciprocating chute 5111, the reciprocating slider 514 drives the rotating cylinder 513 and the first roller 512 to move along the axial direction of the first fixed shaft 511 while rotating spirally along the reciprocating chute 5111. Since the reciprocating chute 5111 has two opposite spiral directions, the first roller 512 moves reciprocally along the axial direction relative to the first fixed shaft 511. Therefore, externally, when the upper sliding shifting roller 51 rotates, it synchronously performs a reciprocating swinging action along the axial direction. Thus, while the upper sliding shifting roller 51 rotates and conveys the ink to the swing roller 63, the ink is more evenly coated on the first roller 512 through the axial reciprocating swing.

[0042] When the first ink leveling roller 54 and the second ink leveling roller 55 in the embodiment of the utility model rotate, they perform axial reciprocating motion between the first mounting plate 1 and the second mounting plate 2. The first ink leveling roller 54 and the second ink leveling roller 55 can be detachably mounted between the first mounting plate 1 and the second mounting plate 2. Both ends of the first ink leveling roller 54 and the second ink leveling roller 55 are provided with mounting seats 541 and adjusting nuts 542. The axial reciprocating motion of the first ink leveling roller 54 and the second ink leveling roller 55 is the same as the structure and principle of the upper sliding roller 51, which will not be repeated here. The difference between the first ink leveling roller 54 and the second ink leveling roller 55 relative to the upper sliding roller 51 is that the two ends of the first ink leveling roller 54 and the second ink leveling roller 55 are fixed by the mounting seats 541, and the adjusting nuts 542 can adjust the tightness of the fit between the first ink leveling roller 54 and the second ink leveling roller 55 and the driving rubber roller 4, so as to further evenly apply the ink on the driving rubber roller 4 to avoid uneven application of the ink on the driving rubber roller 4 affecting the next step of transportation.

[0043] The lower sliding roller 52 in the embodiment of the utility model comprises a second fixed shaft 521 connected at both ends to install the sliding slider 53 and a second roller 522 rotatably sleeved on the outer side of the second fixed shaft 521. The second roller 522 rotates in the opposite direction to the first roller 512 of the upper sliding roller 51. When the first ink-distributing roller 54 rotates under the drive of the driving rubber roller 4, the first ink-distributing roller 54 rotates in the opposite direction to the driving rubber roller 4. When the first ink-distributing roller 54 drives the lower sliding roller 52 to rotate, the rotation directions of the two are also opposite, thereby the lower sliding roller When the upper sliding roller 51 is driven by 52 to rotate, the two rotate in opposite directions. Therefore, the first ink distributing roller 54 and the upper sliding roller 51 always keep the same rotation direction. When the upper sliding roller 51 and the first ink distributing roller 54 rotate and reciprocate axially, the lower sliding roller 52 is driven by the axial reciprocating motion of the upper sliding roller 51 and the first ink distributing roller 54 and also reciprocates axially. Therefore, when the lower sliding roller 52 receives ink from the upper sliding roller 51 and transmits it to the first ink distributing roller 54, it also has the function of evenly coating the ink on the first ink distributing roller 54.

[0044] The driving rubber roller 4 in the embodiment of the utility model rotates synchronously with the printing roller (not shown in the figure) having a printing pattern. The driving mechanism of the driving rubber roller 4 is a structural component of the linked printing roller. Specifically, a driving shaft 41 is passed through the driving rubber roller 4, and a driving gear 42 is sleeved on the driving shaft 41. When the driving gear 42 is engaged with the gear structure on the printing roller, the driving shaft 41 can be driven to rotate, thereby driving the rubber roller 4 to rotate. The driving rubber roller 4 is a driving component of the driven roller group of the ink supply mechanism relative to the entire ink supply mechanism.

[0045] The above description is only for the preferred embodiments of the present application, and does not impose any formal restrictions on the present application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application all belong to the scope of the technical solution of the present application.

Claims

1. A precision ink supply mechanism for a printing press, comprising an ink tower (3), a driving rubber roller (4), a driven rubber roller group (5), and an ink transfer assembly (6) assembled between a first mounting plate (1) and a second mounting plate (2), characterized in that: The driving rubber roller (4) rotates to drive the driven rubber roller group (5) to rotate. The ink transfer assembly (6) includes an ink receiving roller (61) located at the ink outlet position of the ink tower (3), a stepping motor (62) for driving the ink receiving roller (61) to rotate, and a swing roller assembly for transporting the ink on the ink receiving roller (61) to the driven rubber roller group (5). One shaft end of the ink receiving roller (61) is supported and installed on the first mounting plate (1) and is connected to the output end of the stepping motor (62). The other shaft end is supported and installed on the second mounting plate (2) and extends outside the second mounting plate (2), and is sequentially sleeved with a cam (611) and an adjustment knob (612). A swing arm assembly is arranged on the outer side of the second mounting plate (2). The swing arm assembly includes a swing arm (633). The swing arm (633) is located directly below the cam (611). One end of the swing roller assembly is pivotally connected to the first mounting plate (1), and the other end extends outside the second mounting plate (2) and is connected to one end of the swing arm (633). The swing roller assembly reciprocates under the action of the cam (611) and the swing arm assembly.

2. The precision ink supply mechanism for a printing press according to claim 1, wherein: The swing roller assembly includes a swing roller (63), a swing rotating shaft (632), and two support members (631). The upper ends of the two support members (631) are respectively fixedly installed on the two shaft ends of the swing roller (63). The lower ends of the two support members (631) are respectively sleeved and fixed on the swing rotating shaft (632). One end of the swing rotating shaft (632) is pivotally connected to the first mounting plate (1), and the other end extends outside the second mounting plate (2) and is connected to one end of the swing arm (633).

3. The precision ink supply mechanism for a printing press according to claim 1, characterized in that: The swing arm assembly further includes an elastic reset member (221), a reset support rod (22), a limit support rod (21), and a limit abutting plate (211). The reset support rod (22) and the limit support rod (21) are both fixedly installed on the outer surface of the second mounting plate (2). One end of the elastic reset member (221) is connected to the upper end surface of the swing arm (633), and the other end is connected to the reset support rod (22). The swing arm (633) reciprocates under the action of the cam (611) and the elastic reset member (221), thereby driving the swing roller assembly to reciprocate. One end of the limit abutting plate (211) is connected to the end of the swing arm (633) away from the swing rotating shaft (632), and the other end of the limit abutting plate (211) is provided with an abutting groove capable of abutting against the limit support rod (21).

4. The precision ink supply mechanism for a printing press according to claim 1, characterized in that: The driven roller set includes an upper sliding roller (51), a lower sliding roller (52), a first ink leveling roller (54) for conveying the ink on the ink transfer assembly (6) to the driving rubber roller (4), and a second ink leveling roller (55) for evenly coating the ink on the driving rubber roller (4). The upper sliding roller (51), the lower sliding roller (52), the first ink leveling roller (54), and the second ink leveling roller (55) are all arranged relatively parallel to the driving rubber roller (4). The upper sliding roller (51) is located on the side of the swing roller assembly away from the ink receiving roller (61). The lower sliding roller (52) is located below the upper sliding roller (51). The first ink leveling roller (54) is located between the lower sliding roller (52) and the driving rubber roller (4). The second ink leveling roller (55) is located on the lower side of the driving rubber roller (4). The first ink leveling roller (54) and the second ink leveling roller (55) both move closely along the surface of the driving rubber roller (4).

5. The precision ink supply mechanism for a printing press according to claim 4, characterized in that: Both ends of the upper sliding roller (51) and the lower sliding roller (52) are provided with sliding sliders (53). The first mounting plate (1) and the second mounting plate (2) are symmetrically provided with sliding chutes (23) for assembling the sliding sliders (53). The upper sliding roller (51) and the lower sliding roller (52) are stacked and slidably mounted in the sliding chutes (23). While the upper sliding roller (51) and the lower sliding roller (52) are rotating, they perform axial reciprocating motion between the first mounting plate (1) and the second mounting plate (2).

6. The precision ink supply mechanism for a printing press according to claim 5, characterized in that: The upper sliding roller (51) includes a first fixed shaft (511) with the sliding sliders (53) connected and installed at both ends, and a first roller barrel (512) movably sleeved outside the first fixed shaft (511). Reciprocating chutes (5111) are provided at both ends of the first fixed shaft (511). Rotating cylinders (513) sleeved on the first fixed shaft (511) are arranged on the inner surfaces at both ends of the first roller barrel (512). Reciprocating sliders (514) used in cooperation with the reciprocating chutes (5111) are arranged on the rotating cylinders (513). One end of the reciprocating slider (514) protrudes from the inner surface of the rotating cylinder (513) and slides in the reciprocating chute (5111).

7. The precision ink supply mechanism for a printing press according to claim 6, characterized in that: Assembly grooves (5121) for installing the rotating cylinders (513) are formed on the inner surfaces at both ends of the first roller barrel (512). A limiting groove (5122) is arranged on the inner surface of one side of the assembly groove (5121) close to the end of the first fixed shaft (511). A clamp (5123) for limiting the lateral movement of the rotating cylinder (513) is installed in the limiting groove (5122). The end of the reciprocating slider (514) away from the reciprocating chute (5111) protrudes from the outer surface of the rotating cylinder (513) and contacts the inner surface of the first roller barrel (512). A positioning groove (5124) for limiting the reciprocating slider (514) is arranged at the contact position between the inner surface of the first roller barrel (512) and the reciprocating slider (514).

8. The precision ink supply mechanism for a printing press according to claim 5, wherein: The lower sliding roller (52) comprises a second fixed shaft (521) with two ends connected to the movable slider (53) and a second roller (522) rotatably sleeved on the outside of the second fixed shaft (521), wherein the second roller (522) rotates in the opposite direction to the first roller (512) of the upper sliding roller (51).

9. The precision ink supply mechanism for a printing press according to claim 4, characterized in that: The first ink-distributing roller (54) and the second ink-distributing roller (55) perform axial reciprocating motion between the first mounting plate (1) and the second mounting plate (2) while rotating; the first ink-distributing roller (54) and the second ink-distributing roller (55) are both detachably mounted between the first mounting plate (1) and the second mounting plate (2); and mounting seats (541) and adjusting nuts (542) are provided at both ends of the first ink-distributing roller (54) and the second ink-distributing roller (55).

10. The precision ink supply mechanism for a printing press according to claim 1, characterized in that: A driving shaft (41) is inserted into the driving rubber roller (4), and a driving gear (42) is sleeved on the driving shaft (41).

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