CN221794167U - Scraper positioning mechanism capable of being axially adjusted - Google Patents

Abstract

The utility model provides a scraper positioning mechanism that can axial adjustment, includes scraper, controls adjusting unit, adjustable scraper rest, first scraper rest, second scraper rest, its characterized in that: the adjustable scraper frame comprises an adjustable shaft capable of axially moving, at least two supporting seats, the first scraper seat and the second scraper seat are respectively provided with linear bearings, two ends of the adjustable shaft are respectively arranged in the two linear bearings, all the supporting seats are respectively fixed on the adjustable shaft, and the left and right adjusting unit comprises an adjusting driving device, a rotating disc, an adjusting piece and an adjusted roller. Compared with the prior art, the scraper has the beneficial effects that the scraper can move left and right rapidly and accurately due to the left and right adjusting units, the height of the scraper can be accurately adjusted by the height adjusting units, and the angle of the scraper can be accurately adjusted by the angle adjusting units; the scraper can be quickly and accurately adjusted to a proper position and a proper angle by mutually matching the scraper and the scraper, and the adjustment is convenient and quick.

Description

Axially adjustable scraper positioning mechanism

Technical Field

The utility model relates to a scraper positioning device for a printing press, in particular to an axially adjustable scraper positioning mechanism.

Background Art

During printing, the printing plate roller is inked on the entire surface, and the scraper scrapes off the ink on the blank part of the plate, leaving the ink on the image part, and then printing is carried out. Due to the close fit between the printing plate roller and the scraper, the scraper needs to be able to be adjusted in the up and down direction, left and right direction, and angle. Therefore, the scraper positioning device has these adjustment units to meet the adjustment needs.

To this end, a Chinese patent document with the publication number CN104385773B and the name "A printing machine scraper device" discloses a printing machine scraper device, which includes a frame, a fixed plate is fixed on the frame, a linear track is horizontally arranged below the fixed plate, a reciprocating plate that can move left and right along the linear track is arranged on the linear track, a left and right movement mechanism for moving the reciprocating plate left and right is arranged on the frame, a scraper assembly and an up and down movement mechanism for controlling the up and down movement of the scraper assembly are arranged on the reciprocating plate, and a front and back movement mechanism for controlling the front and back movement of the scraper assembly is arranged. The overall movement of the scraper of this technology is moved left and right and raised and lowered by a linear guide rail, the left and right movement of the scraper is controlled by a motor, the up and down movement of the scraper is controlled by a worm gear, and the front and back adjustment of the scraper is controlled by a screw rod, so that the three-way adjustment of the scraper is realized, and the influence of the gear rack gap on the stability of the scraper is reduced; the clamping mechanism of the scraper blade can quickly realize the clamping or loosening of the scraper blade by using the eccentric shaft through the lever principle, and the scraper does not need to be disassembled when replacing the scraper.

However, the applicant found that the left and right movement of the scraper is achieved by using a motor to drive the cam to rotate, so that the cam drives the connecting rod to push and pull the reciprocating plate to reciprocate along the linear track. Since the above structure is large in size and heavy in weight, it takes up a large space, and the friction between the reciprocating plate and the linear track is large, so it consumes more electric energy, and the movement accuracy is low and the noise is large. In addition, the scraper lacks angle adjustment, resulting in the need for manual operation to adjust the angle of the scraper, which is very troublesome.

Utility Model Content

The purpose of the utility model is to provide an axially adjustable scraper positioning mechanism, which can allow the scraper to move quickly and accurately left and right. The technical solution adopted is as follows:

14. The invention relates to a scraper positioning mechanism with axial adjustment, comprising a scraper, a left-right adjustment unit, an adjustable scraper frame, a first scraper seat, and a second scraper seat, wherein the adjustable scraper frame is installed between the first scraper seat and the second scraper seat, and the scraper is installed on the scraper frame, characterized in that: the adjustable scraper frame comprises an axially movable adjustable shaft and at least two support seats, the first scraper seat and the second scraper seat are respectively provided with linear bearings, the two ends of the adjustable shaft are respectively arranged in the two linear bearings, all the support seats are respectively fixed on the adjustable shaft, the left-right adjustment unit comprises an adjustment drive device, a rotating disk, an adjustment member, and an adjusted roller, the adjustment drive device is installed on the second scraper seat, the adjustment drive device has an output shaft, the rotating disk is installed at the end of the output shaft, the adjustment member is fixed on the outer side surface of the rotating disk deviating from the center of a circle, the adjusted roller is installed at one end of the adjustable shaft close to the second scraper seat, an adjusted groove is opened on the circumferential surface of the adjusted roller, the adjustment member is arranged in the adjusted groove and when the adjustment member rotates, it cooperates with the adjusted groove to drive the adjustable shaft to move axially along the adjustable shaft.

In a more preferred solution, the regulated slot is formed by sequentially connecting a first slot plate, a slot bottom, and a second slot plate.

In a preferred solution, the adjusting member is a roller, which is rotatably mounted on the outer side of the rotating disk, and the roller is in rolling contact with the inner side wall of the adjusted slot. The roller rotates with the rotating disk, and when the roller contacts the inner side wall on the left side, the roller drives the adjusted slot and the adjustable shaft to move to the left, and when the roller contacts the inner side wall on the right side, the roller drives the adjusted slot and the adjustable shaft to move to the right.

In a preferred solution, the adjusting drive device comprises a motor and a reducer, the output shaft of the motor is connected to the reducer, and the output shaft of the adjusting drive device is the output shaft of the reducer.

In a more preferred solution, the motor is a first servo motor.

In a preferred solution, the adjustable scraper holder further comprises at least one auxiliary positioning shaft, both ends of which are respectively connected to the first scraper seat and the second scraper seat, and all the support seats are slidably mounted on all the auxiliary positioning shafts.

In a preferred solution, the support base is assembled from a plurality of panels, that is, the support base is hollow, and such a structure can not only save materials and reduce weight, but also facilitate manufacturing, maintenance, and replacement of parts.

In a preferred solution, the adjustable scraper frame also includes a height adjustment unit, which includes a first worm wheel, a first worm, a plurality of liftable seats, a plurality of adjustment racks, and a plurality of adjustment gears. The liftable seats, the support seats, the adjustment racks, and the adjustment gears are the same in number and correspond to each other. Each adjustment rack can be mounted on the corresponding support seat in a vertical direction, each liftable seat is mounted on the top of the corresponding adjustment rack, each adjustment gear is mounted on the adjustable shaft, and each adjustment gear is meshed with the corresponding adjustment rack. The first worm wheel is mounted on the adjustable shaft, the first worm is mounted on the support seat, and the first worm is horizontally arranged and meshed with the first worm wheel. The operator rotates the first worm to rotate the adjustable shaft, and the adjustment gear rotates with the adjustable shaft, thereby driving the adjustment rack to rise and fall, and adjusting the height of the liftable seat.

In a more preferred solution, a first operating handle or a second servo motor is installed at one end of the first worm.

A preferred solution is that the adjustable scraper frame also includes an angle adjustment unit, the angle adjustment unit includes a second worm gear, a second worm, an angle adjustment shaft, and a scraper mounting frame, the scraper mounting frame includes a scraper mounting plate and at least one fixed seat, both ends of the angle adjustment shaft are rotatably mounted on all the liftable seats, the second worm gear is mounted on the angle adjustment shaft, the second worm is mounted on a liftable seat, the second worm is horizontally arranged and meshed with the second worm gear, all fixed seats are fixed on the angle adjustment shaft, the bottom surface of the scraper mounting plate is connected to all the fixed seats, and the scraper is mounted on the scraper mounting plate.

Compared with the prior art, the utility model has the beneficial effect that, due to the provision of the left and right adjustment unit, the scraper can be moved left and right quickly and accurately, the height adjustment unit can accurately adjust the height of the scraper, and the angle adjustment unit can accurately adjust the angle of the scraper; the three cooperate with each other, and the scraper can be adjusted to a suitable position and a suitable angle quickly and accurately, and the adjustment is convenient and quick.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of the utility model;

FIG2 is a schematic diagram of another angle of the embodiment shown in FIG1 with part of the protective cover removed;

FIG3 is an enlarged view of the left and right adjustment units of FIG2 ;

FIG4 is a schematic diagram of FIG3 without the adjusted roller;

FIG5 is a schematic diagram of FIG1 with a portion of the protective cover removed, showing a liftable seat on the left side;

FIG6 is a schematic diagram of FIG5 without all the support seats, the liftable seat, the first scraper seat, and the second scraper seat;

FIG. 7 is a schematic diagram of FIG. 6 from another angle.

DETAILED DESCRIPTION

As shown in FIGS. 1-4, an axially adjustable scraper positioning mechanism in an embodiment of the present application includes a scraper 1, a left-right adjustment unit 2, an adjustable scraper frame 3, a first scraper seat 4, and a second scraper seat 5. The adjustable scraper frame 3 is installed between the first scraper seat 4 and the second scraper seat 5. The scraper 1 is installed on the scraper frame 1. The adjustable scraper frame 3 includes an axially movable adjustable shaft 301 and at least two support seats 302. The first scraper seat 4 and the second scraper seat 5 are respectively provided with linear bearings. Both ends of the adjustable shaft 301 are respectively arranged in two linear bearings. All support seats 302 are respectively fixed on the adjustable shaft 301. Unit 2 includes an adjusting drive device 201, a rotating disk 202, an adjusting member, and an adjusted roller 204. The adjusting drive device 201 is installed on the second scraper seat 5. The adjusting drive device 201 has an output shaft. The rotating disk 202 is installed at the end of the output shaft. The adjusting member is fixed on the outer side of the rotating disk 202 at a position deviating from the center of the circle. The adjusted roller 204 is installed at one end of the adjustable shaft 301 close to the second scraper seat 5. An adjusted groove 2041 is opened on the circumferential surface of the adjusted roller 204. The adjusting member is arranged in the adjusted groove 2041 and when the adjusting member rotates, it cooperates with the adjusted groove 2041 to drive the adjustable shaft 301 to move axially along the adjustable shaft 301.

As shown in FIG. 3 , in an optional embodiment of the present application, the adjusted slot 2041 is formed by sequentially connecting a first slot plate 20411 , a slot bottom 20412 , and a second slot plate 20413 .

As shown in Fig. 3 and Fig. 4, in an optional embodiment of the present application, the adjusting member is a roller 203, which is rotatably mounted on the outer side of the rotating disk 202, and the roller 203 rolls in contact with the inner side wall of the adjusted slot 2041. The roller 203 rotates with the rotating disk 202, and when the roller 203 contacts the inner side wall on the left side, the roller 203 drives the adjusted slot 2041 and the adjustable shaft 301 to move to the left, and when the roller 203 contacts the inner side wall on the right side, the roller 203 drives the adjusted slot 2041 and the adjustable shaft 301 to move to the right.

As shown in FIGS. 3 and 4 , in an optional embodiment of the present application, the adjusting drive device 201 includes a motor and a reducer 2012 , the output shaft of the motor is connected to the reducer 2012 , and the output shaft of the adjusting drive device is the output shaft of the reducer 2012 .

As shown in FIGS. 3 and 4 , in an optional embodiment of the present application, the motor is a first servo motor 2011 .

As shown in Figures 1 and 5, an optional embodiment of the present application, the adjustable scraper frame 3 also includes at least one auxiliary positioning shaft 303, the two ends of the auxiliary positioning shaft 303 are respectively connected to the first scraper seat 4 and the second scraper seat 5, and all support seats 302 are slidably mounted on all auxiliary positioning shafts 303.

As shown in Fig. 5, in an optional embodiment of the present application, the support seat 302 is assembled from multiple panels. In other words, the support seat 302 is hollow, which not only saves materials and reduces weight, but also facilitates manufacturing, maintenance, and replacement of parts.

As shown in Figures 5 and 6, an optional embodiment of the present application, the adjustable scraper frame 3 also includes a height adjustment unit 304, the height adjustment unit 304 includes a first worm wheel 3042, a first worm 3043, a plurality of liftable seats 3041, a plurality of adjustment racks 3044, and a plurality of adjustment gears 3045, the liftable seats 3041, the support seat 302, the adjustment racks 3044, and the adjustment gears 3045 are the same in number and correspond one to one, each adjustment rack 3044 can be mounted on the corresponding support seat 302 in a vertical direction, each liftable seat 3041 is mounted on the top of the corresponding adjustment rack 3044, each adjustment gear 3045 is mounted on the adjustable shaft 301 and each adjustment gear 3045 is meshed with the corresponding adjustment rack 3044, the first worm wheel 3042 is mounted on the adjustable shaft 301, the first worm 3043 is mounted on the support seat 302, and the first worm 3043 is horizontally arranged and meshed with the first worm wheel 3042. The operator rotates the first worm 3043 to rotate the adjustable shaft 301 , and the adjusting gear 3045 rotates along with the adjustable shaft 301 , thereby driving the adjusting rack 3044 to rise or fall, thereby adjusting the height of the liftable seat 3041 .

As shown in FIGS. 5 and 6 , in an optional embodiment of the present application, a first operating handle 3046 is installed at one end of the first worm gear 3043 .

In an optional embodiment of the present application, a second servo motor is installed at one end of the first worm 3043 .

As shown in Fig. 5 and Fig. 6, an optional embodiment of the present application, the adjustable scraper frame 3 also includes an angle adjustment unit 305, the angle adjustment unit 305 includes a second worm wheel 3051, a second worm 3052, an angle adjustment shaft 3053, and a scraper mounting frame 3054, the scraper mounting frame 3054 includes a scraper mounting plate 30541, at least one fixed seat 30542, the two ends of the angle adjustment shaft 3053 are rotatably mounted on all the liftable seats 3041, the second worm wheel 3051 is mounted on the angle adjustment shaft 3053, the second worm 3052 is mounted on a liftable seat 3041, the second worm 3052 is horizontally arranged and meshed with the second worm wheel 3051, all the fixed seats 30542 are fixed on the angle adjustment shaft 3053, the bottom surface of the scraper mounting plate 30541 is connected to all the fixed seats 30542, and the scraper 1 is mounted on the scraper mounting plate 30541. The number of fixed seats 30542 is 2.

As shown in FIG. 5 , in an optional embodiment of the present application, a second operating handle 3055 is installed at one end of the second worm gear 3052 .

In an optional embodiment of the present application, a third servo motor is installed at one end of the second worm 3052 .

As shown in Figures 5-7, an optional embodiment of the present application, the adjustable scraper frame 3 also includes at least one angle maintaining unit 306, the angle maintaining unit 306 includes a cylinder seat 3061 and a cylinder 3062, the cylinder seat 3061 is fixed on the angle adjustment shaft 3053, the cylinder 3062 is installed on the cylinder seat 3061, and the piston shaft of the cylinder 3062 is connected to the scraper mounting plate 30541.

As shown in Figures 5 and 7, an optional embodiment of the present application, the bottom surface of the scraper mounting plate 30541 is hinged to all the fixed seats 30542, the angle maintaining unit 306 also includes at least one angle fine-tuning structure 3063, the angle fine-tuning structure 3063 includes a fine-tuning seat 30631, a fine-tuning screw 30632, and a fine-tuning drive component, the piston shaft of the cylinder 3062 is connected to the fine-tuning seat 30631, the fine-tuning screw 30632 is rotatably mounted on the fine-tuning seat 30631 and the fine-tuning screw 30632 is threadedly connected to the scraper mounting plate 30541, and the fine-tuning drive component is installed at one end of the fine-tuning screw 30632.

As shown in FIG. 7 , in an optional embodiment of the present application, the fine-tuning drive member is a third operating handle 30633 .

In an optional embodiment of the present application, the fine-tuning drive component is a fourth servo motor.

As shown in FIG. 1 , in an optional embodiment of the present application, the adjustable scraper holder 3 further includes a protective cover 307 , which is installed on and covers all the support seats 302 .

The working process of this embodiment is described below in conjunction with Figures 1-7:

The scraper 1 moves left and right: the first servo motor 2011 works, and the roller 203 rotates with the rotating disk 202. When the roller 203 contacts the inner wall on the left, the roller 203 drives the adjusted groove 2041 and the adjustable shaft 301 to move to the left. When the roller 203 contacts the inner wall on the right, the roller 203 drives the adjusted groove 2041 and the adjustable shaft 301 to move to the right. In this way, the scraper 1 can move left and right.

Lifting and lowering of the scraper 1: the operator rotates the first operating handle 3046 to rotate the first worm 3043, thereby driving the first worm wheel 3042 to rotate, and the adjustable shaft 301 rotates along with the first worm wheel 3042, while the adjusting gear 3045 rotates along with the adjustable shaft 301, thereby driving the adjusting rack 3044 to rise and fall, adjusting the height of the lifting seat 3041, and thus adjusting the height of the scraper 1.

Scraper 1 angle adjustment: the operator turns the second operating handle 3055 to rotate the second worm 3052, driving the second worm wheel 3051 to rotate, and the angle adjustment shaft 3053 rotates along with the second worm wheel 3051, so that the scraper mounting frame 3054 and scraper 1 can rotate along with the angle adjustment shaft 3053 to adjust the angle of scraper 1. After adjusting the angle, the cylinder 3062 of the angle holding unit 306 applies a force to the fine-tuning seat 30631 to keep the fine-tuning seat 30631 at the angle. When the angle needs to be fine-tuned, the operator turns the third operating handle 30633 to rotate the fine-tuning screw 30632 to rotate the scraper mounting plate 30541.

In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims (8)

1. An axially adjustable scraper positioning mechanism, comprising a scraper, a left and right adjustment unit, an adjustable scraper frame, a first scraper seat, and a second scraper seat, the adjustable scraper frame is installed between the first scraper seat and the second scraper seat, and the scraper is installed on the scraper frame, characterized in that: the adjustable scraper frame comprises an axially movable adjustable shaft and at least two support seats, the first scraper seat and the second scraper seat are respectively provided with linear bearings, the two ends of the adjustable shaft are respectively arranged in the two linear bearings, all the support seats are respectively fixed on the adjustable shaft, the left and right adjustment units comprise an adjustment drive device, a rotating disk, an adjustment member, and an adjusted roller, the adjustment drive device is installed on the second scraper seat, the adjustment drive device has an output shaft, the rotating disk is installed at the end of the output shaft, the adjustment member is fixed at the outer side surface of the rotating disk deviating from the center of the circle, the adjusted roller is installed at one end of the adjustable shaft close to the second scraper seat, an adjustable groove is opened on the circumferential surface of the adjusted roller, the adjustment member is arranged in the adjustable groove and when the adjustment member rotates, it cooperates with the adjusted groove to drive the adjustable shaft to move axially along the adjustable shaft. 2. The axially adjustable scraper positioning mechanism according to claim 1 is characterized in that the adjusted groove is formed by connecting a first groove plate, a groove bottom, and a second groove plate in sequence. 3. The axially adjustable scraper positioning mechanism according to claim 1 is characterized in that: the adjusting member is a roller, which is rotatably mounted on the outer side surface of the rotating disk, and the roller is in rolling contact with the inner side wall of the adjusted groove. 4. The axially adjustable scraper positioning mechanism as described in claim 1 is characterized in that: the adjustable scraper frame also includes at least one auxiliary positioning shaft, the two ends of the auxiliary positioning shaft are respectively connected to the first scraper seat and the second scraper seat, and all support seats can be slidably mounted on all auxiliary positioning shafts. 5. The axially adjustable scraper positioning mechanism as described in any one of claims 1 to 4 is characterized in that: the adjustable scraper frame also includes a height adjustment unit, the height adjustment unit includes a first worm wheel, a first worm, multiple liftable seats, multiple adjustment racks, and multiple adjustment gears, the liftable seats, the support seats, the adjustment racks, and the adjustment gears are the same in number and correspond one to one, each adjustment rack can be installed on the corresponding support seat in a vertical direction, each liftable seat is installed on the top of the corresponding adjustment rack, each adjustment gear is installed on the adjustable shaft and each adjustment gear is meshed with the corresponding adjustment rack, the first worm wheel is installed on the adjustable shaft, the first worm is installed on the support seat, and the first worm is horizontally arranged and meshed with the first worm wheel. 6. The axially adjustable scraper positioning mechanism as described in claim 5 is characterized in that: the adjustable scraper frame also includes an angle adjustment unit, the angle adjustment unit includes a second worm gear, a second worm, an angle adjustment shaft, and a scraper mounting frame, the scraper mounting frame includes a scraper mounting plate and at least one fixed seat, both ends of the angle adjustment shaft are rotatably mounted on all liftable seats, the second worm gear is mounted on the angle adjustment shaft, the second worm is mounted on a liftable seat, the second worm is horizontally arranged and meshed with the second worm gear, all fixed seats are fixed on the angle adjustment shaft, the bottom surface of the scraper mounting plate is connected to all fixed seats, and the scraper is mounted on the scraper mounting plate. 7. The axially adjustable scraper positioning mechanism as described in claim 6 is characterized in that: the adjustable scraper frame also includes at least one angle maintaining unit, the angle maintaining unit includes a cylinder seat and a cylinder, the cylinder seat is fixed on the angle adjustment shaft, the cylinder is installed on the cylinder seat, and the piston shaft of the cylinder is connected to the scraper mounting plate. 8. The axially adjustable scraper positioning mechanism as described in claim 7 is characterized in that: the bottom surface of the scraper mounting plate is hinged to all the fixed seats, the angle maintaining unit also includes at least one angle fine-tuning structure, the angle fine-tuning structure includes a fine-tuning seat, a fine-tuning screw, and a fine-tuning drive component, the piston shaft of the cylinder is connected to the fine-tuning seat, the fine-tuning screw is rotatably mounted on the fine-tuning seat and the fine-tuning screw is threadedly connected to the scraper mounting plate, and the fine-tuning drive component is installed at one end of the fine-tuning screw.