CN111288282B

CN111288282B - Arrangement in a printing press

Info

Publication number: CN111288282B
Application number: CN201911240268.1A
Authority: CN
Inventors: C·格宾
Original assignee: Heidelberger Druckmaschinen AG
Current assignee: Heidelberger Druckmaschinen AG
Priority date: 2018-12-06
Filing date: 2019-12-06
Publication date: 2021-03-12
Anticipated expiration: 2039-12-06
Also published as: CN111288282A; DE102018221107B3

Abstract

The invention relates to a device in a printing press, comprising a roller (3) having a working surface (11), a member on which the roller (3) rolls, and a supply (9) for supplying lubricant (10) to the working surface (11). The first deflector (12) and the second deflector (13) rest on the running surface (11) and are oriented at an angle such that they press the lubricant (10) on the running surface (11) from the edge of the running surface (11) to the center of the running surface (11).

Description

Arrangement in a printing press

Technical Field

The invention relates to an arrangement in a printing press, comprising: a roller having a working face; a member on which the roller is rolled; and a supply portion for supplying lubricant to the working surface.

Background

To reduce wear, the running surfaces of the curvilinear roller/cam roller (kurvenroll) are lubricated.

DE 102013002475 a1 describes a cam gear having a control cam and a cam roller. A lubricant line is provided for supplying lubricant, which lubricant line extends sealingly to the running surface of the cam roller.

A disadvantage is that the lubricant is pressed from the center of the running surface of the cam roller to the edge as a result of the pressing (pressing) in the contact region formed by the cam roller and the control cam together. Since this results in a lack of lubricant in the center, which is the most heavily loaded area of the working surface, excessive wear may occur there.

Disclosure of Invention

The object of the invention is to provide a more wear-resistant device of the type mentioned at the outset.

This object is achieved by an apparatus in a printing press, comprising: the device comprises a roller having a running surface, a component on which the roller rolls, and a supply for supplying lubricant to the running surface, wherein a first deflector and a second deflector rest on the running surface and are oriented at an angle such that they push the lubricant on the running surface from the edge of the running surface to the center of the running surface.

In the device according to the invention a long service life of the rollers and the components is ensured.

The following modifications are possible:

the first and second deflectors can be angled relative to the direction of rotation and oriented in a manner converging (konvergiantend) to the direction of rotation.

There may be an overlap between the inner end of the first deflection body and the inner end of the second deflection body

The amount of overlap can be measured orthogonally to the direction of rotation of the rollers.

The first deflector and the second deflector may be arranged in the direction of rotation of the roller between the supply and a contact zone, which the roller and the member together constitute.

The first deflecting body and the second deflecting body or at least one of them can be switched by the actuator.

The first deflecting body and the second deflecting body or at least one of them may be configured as a flexible scraper.

The first and second deflecting bodies or at least one of them can be spring-loaded by a spring (gefedert).

The first deflector and the second deflector, or at least one of them, may be configured as a roller, a brush or a sponge.

The member may be a control cam.

The members and rollers may be roller-pillow rings (Schmitzring).

Drawings

The improvement also results from the following description of an embodiment and the accompanying drawings, which show:

FIG. 1: the device according to the invention has a roller and a deflector for the lubricant resting thereon;

FIG. 2: FIG. 1 is an expanded view of the working surface of the roller; and

fig. 3a to 3 f: different construction variants of the deflector body in fig. 1.

Detailed Description

Fig. 1 shows an apparatus 1 in a printing press. The device 1 comprises a component 2 and a roller 3, which roller 3 rolls on the component 2 and rotates in the direction of rotation 4.

According to a first variant, both the roller 3 and the member 2 are rotatable and roll on each other (for example in the case where the roller 3 is a first roller-pillow ring and the member 2 is a second roller-pillow ring).

According to a second variant, the roller 3 can run around the component 2, which is not rotating here (for example in the case of the component 2 being a cam disk, as shown in the example).

In case the member 2 is a cam plate or similar control cam, the roller 3 is a cam roller.

However, the roller 3 can also be a running roller running along it on a rail, wherein the rail constitutes the component 2.

In each case, the rollers 3 and the component 2 together form a contact region 6 with a pressing (region) during rolling. The roller 3 is supported in a lever 7 and is pressed against the component 2 by a spring 8.

The lubricant 10 is applied to the running surfaces 11 of the rollers 3 by means of the supply 9. The supply 9 may be a grease chamber open to the working surface 11, wherein the lubricant 10 is grease.

But in the example the supply 9 is a dropper and the lubricant 10 is oil.

A first deflector 12 and a second deflector 13 are placed on the work surface 11, the first deflector 12 and the second deflector 13 being fastened to a frame 14. These

deflectors

12,13 may also be referred to as lubricant guiding elements or lubricant wipers and have an elongated or strip-like shape.

Fig. 2 shows an expanded view of the work surface 11, wherein the midline 15 of the work surface 11 is indicated. The contact zone 6 is indicated by a dashed line, which contact zone 6 is located after the supply 9 and before the

deflectors

12,13 in the direction of rotation 4.

These

deflectors

12,13 are inclined in the direction of rotation 4 converging with respect to the median line 15 at opposite angles + α, - α. These angles + α, - α are acute angles and may have the same or different values.

These

deflectors

12,13 each extend from the edge of the working surface 11 up to approximately the center of the working surface 11. Inner end 29 of second deflector 13 extends almost to midline 15, and inner end 30 of first deflector 12 extends slightly beyond midline 15. Between these two

inner ends

29,30 there is an overlap a, which can be measured orthogonally to the centre line 15 and parallel to the axis of rotation of the roller 3.

These

deflectors

12,13 operate as follows:

the lubricant 10 is applied centrally to the running surface 11 by the supply 9. The applied lubricant 10 forms an intermediate strip 16 in the circumferential region of the roller 3 between the supply 9 and the contact region 6.

Due to the compression (location) in the contact area 6, the lubricant 10 is pressed there against both sides of the roller. This compression is greatest at the center and decreases towards the sides. As a result, the lubricant 10 forms a first lateral strip 17 and a second lateral strip 18 in the circumferential region between the contact region 6 and the

deflectors

12, 13.

As the roller 3 rotates with its

lateral strips

17,18 relative to the

stationary deflectors

12,13, these

lateral strips

17,18 strike these

deflectors

12,13, and these

deflectors

12,13 in turn force the lubricant 10 toward the center line 15. Here, the first deflector 12 deflects the first lateral strip 17 towards the center line 15 and also onto the second deflector 13, while the latter (second deflector 13) deflects the first lateral strip 17 and the lubricant 10 received from the first deflector 12 towards the center line 15.

The lubricant 10 leaving from the inner end 29 of the second deflector 13 again forms the intermediate strip 19, which is advantageous because the most intensive working surface area used in the center of the contact zone 6 is thereby reliably lubricated.

Fig. 3a illustrates one of these

deflectors

12,13 as an example of a possible embodiment of the flexible scraper 20. Each flexible scraper 20 rests resiliently against the work surface 11 due to its inherent resilience. Flexible blade 20 may be, for example, a spring plate or a rubber lip, such as similar to a wiper blade.

Fig. 3b shows a possible embodiment of each

deflection body

12,13 as a rigid scraper 21, which rigid scraper 21 is pressed against the work surface 11 by a spring 22. The rigid scraper 21 is arranged as a slider in the guide 23.

Fig. 3c shows a possible embodiment of each

deflector

12,13 as a switchable blade 24, which switchable blade 24 is pressed onto the working surface 11 and is pressed away from the working surface 11 again by means of an actuator 25. The actuator 25 may be an electric motor, a pneumatic cylinder or a piezoelectric actuator.

Fig. 3d shows that the

deflection bodies

12,13 can each be designed as a roller 26, the axis of rotation of which roller 26 is oriented obliquely (or askew) with respect to the axis of rotation of the roller 3, which cannot be seen in the strongly schematic representation associated therewith. The rollers 26 may be cylindrical or barrel-shaped (crowned).

Fig. 3e shows a variant in which the

deflection bodies

12,13 are each designed as a brush 27.

Fig. 3f shows a further variant in which the

deflectors

12,13 are each designed as a sponge 28, for example made of synthetic foam.

Of course, combinations are possible in which the first deflection body 12 is constructed according to one of the variants shown in fig. 3a to 3f and the second deflection body 13 is constructed according to the other of these variants.

List of reference numerals

1 apparatus

2 structural member

3 roller

4 direction of rotation

6 contact zone

7 Lever

8 spring

9 supply part

10 lubricant

11 working surface

12 first deflection body

13 second deflector

14 rack

Line 15 of neutral

16 middle strip

17 first side strip

18 second side strip

19 middle strip

20 Flexible scraper

21 rigid scraper

22 spring

23 guide part

24 switchable squeegee

25 actuator

26 roller

27 brushes

28 sponge

29 inner end portion

30 inner end portion

A lap joint amount

Angle + alpha, -alpha

Claims

1. An apparatus in a printing press comprising:

-a roller (3) having a working surface (11),

-a member (2) on which the rollers (3) roll and in this case rotate in a direction of rotation (4), and

-a supply (9) for supplying lubricant (10) to the working surface (11),

it is characterized in that the preparation method is characterized in that,

a first deflector (12) and a second deflector (13) bear against the running surface (11) and are oriented obliquely such that they press the lubricant (10) on the running surface (11) from the edge of the running surface (11) to the center of the running surface (11).

2. The apparatus as set forth in claim 1, wherein,

it is characterized in that the preparation method is characterized in that,

the first deflector (12) and the second deflector (13) are angled (+ α, - α) with respect to the direction of rotation (4) and are oriented in such a way as to converge to this direction of rotation.

3. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

an overlap (A) exists between an inner end (30) of the first deflection body (12) and an inner end (29) of the second deflection body (13), said overlap being measurable orthogonally to the direction of rotation (4) of the roller (3).

4. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the first deflector (12) and the second deflector (13) are arranged in the direction of rotation (4) of the roller (3) between the supply (9) and a contact zone (6), which contact zone is formed by the roller (3) and the component (2).

5. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the first deflecting body (12) and the second deflecting body (13) or at least one of the two bodies can be switched by means of an actuator (25), wherein the first deflecting body (12) and the second deflecting body (13) or at least one of the two bodies can be pressed onto the working surface (11) and pressed off from the working surface (11) by means of the actuator (25).

6. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the first deflector (12) and the second deflector (13) or at least one of the two are configured as a flexible scraper (20).

7. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the first deflector (12) and the second deflector (13) or at least one of the two is spring-loaded by a spring (22).

8. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the first deflector (12) and the second deflector (13) or at least one of them are configured as a roller (26), a brush (27) or a sponge (28).

9. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the member (2) is a control cam.

10. The apparatus of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the member (2) and the rollers (3) are roller-pillow rings.