DK179095B1

DK179095B1 - Scraping Roller

Info

Publication number: DK179095B1
Application number: DKPA201600177A
Authority: DK
Inventors: Vagn Sindersen
Original assignee: Fur Tech Aps
Priority date: 2016-03-23
Filing date: 2016-03-23
Publication date: 2017-10-30
Also published as: DK201600177A1

Abstract

A scraping roller (2) for scraping the skin side of an animal pelt such as a mink pelt is disclosed. The scraping roller (4) comprises a plurality of scraping teeth (44, 44', 44') arranged on the outer surface of the scraping roller (2). The scraping teeth (44, 44', 44') are detachably attached to the scraping roller (2).

Description

Scraping Roller Field of invention

The present invention relates to a scraping roller for scraping the skin side of an animal pelt such as a mink pelt.

Prior art

It is known to use scraping devices that apply scraping rollers for scraping the skin side of the pelts of fur animals such as minks and foxes.

From EP 2 093 299 Al, a roller scraper for scarping the skin side of a pelt is known. The roller scraper comprises a plurality of scraper blades located on the outer surface of the roller scraper. The blades are replaceable and are projectable in the same direction. Furthermore, the scraping roll comprises an inner structure having protruding parts and receiving parts. However, replacement of scraping blades always induces a risk of subsequent displacement of the blades, if the position of the blades is not sufficiently secured.

When the scraping rollers are blunted (the teeth become dull), they have to be sharpened or replaced with new ones. When the scraping rollers are removed from a scraping device, they have to be replaced by an additional set of scraping rollers.

Accordingly, the pelt farmers are required to possess several sets of scraping rollers as the scraping rollers are typically sent away for days or weeks to specialised companies capable of sharpening the scraping rollers by means of manually assisted scraping devices.

The prior art scraping rollers are typically sharpened a few times before they are thrown away. Accordingly, an enormous waste is generated in this way.

Therefore, it would be desirable to provide an alternative to the prior art scraping rollers in order to reduce waste.

Accordingly, it is an object of the present invention to provide a scraping roller that can replace the prior art scraping roller in order to reduce the quantity of wasted material.

Summary of the invention

The object of the present invention can be achieved by a scraping roller as defined in claim 1. Preferred embodiments are defined in the dependent sub claims, explained in the following description and illustrated in the accompanying drawings.

The scraping roller according to the invention is a scraping roller for scraping the skin side of an animal pelt such as a mink pelt, wherein the scraping roller comprises a plurality of scraping teeth arranged on the outer surface of the scraping roller, wherein the scraping teeth are detachably attached to the scraping roller. The scraping roller further comprises an inner structure provided with protrusion members and receiving portions provided between adjacent protrusion members, wherein the scraping teeth are formed as insert members configured to be engagedly received by the receiving portions, and the receiving portions comprise a first, basically straight, radially extending main groove and a second, basically straight, radially extending main groove angled relative to the first, basically straight main groove.

Hereby, it is not necessary to throw away the portion of the scraping roller provided between the opening and the teeth, when the scraping roller teeth become dull. Accordingly, the invention makes it possible to reduce waste significantly.

The scraping roller according to the invention may have any suitable size, number of teeth and geometry.

The scraping teeth may have any suitable size and form as long as they can be arranged on the outer surface of the scraping roller.

The scraping teeth are detachably attached to the scraping roller.

Hereby, the scraping teeth can be replaced by new ones when they become dull. Instead of throwing away the whole scraping roller, only the dull teeth need to be replaced. The teeth may be sharpened in the same manner as the teeth of prior art scraping rollers.

It may be an advantage that the scraping roller comprises a centrally arranged axial hole.

Hereby, the hole can receive a driving member for driving the scraping roller.

Hereby, the insert members can be attached to the inner structure of the scraping roller in an easy, reliable and user-friendly manner.

It may be an advantage that the protrusion members are basically V-shaped.

Hereby, it is possible to achieve a scraping roller optimised for scraping the skin side of the pelts of fur animals such as minks and foxes.

It may be an advantage that the protrusion members are basically straight.

Hereby, it is possible to produce the inner structure in an easy manner.

Each receiving portion is provided with a first groove member.

Hereby, it is possibly to engagedly insert a tongue member protruding from an insert member into the first groove member of the receiving portion, when inserting the insert member into the receiving portion. Accordingly, a reliable and strong fixation of an insert member into a receiving portion can be achieved by simple means.

Each receiving portion is provided with a second groove member.

Hereby, it is possible to engagedly insert a first tongue member protruding from an insert member into the first groove member of the receiving portion and to engagedly insert a second tongue member protruding from an insert member into the second groove member of the receiving portion. Accordingly, a stronger and even more reliable fixation of the insert member can be achieved.

It may be an advantage that the inner structure comprises a first tongue member configured to be received by the first groove member.

Hereby, a strong and reliable fixation of the insert members to the inner structure can be provided.

It may be advantageous that the inner structure comprises a second tongue member configured to be received by the second groove member.

Hereby, an even stronger and more reliable fixation of the insert members to the inner structure can be provided.

It may be an advantage that the receiving portions and the groove members extend along the length of the inner structure.

Hereby, it is possible to provide a fixation along the length of the inner structure.

It may be beneficial that the scraping roller comprises an inner structure configured to receive the teeth by sliding insert members into axially extending track-like receiving structures provided in the inner structure.

Hereby, a fast and reliable fixation of the insert members can be achieved.

The inner structure comprises a plurality of receiving portions configured to receive the teeth protruding from the inner structure. The receiving portions comprise a first, basically straight, radially extending main groove and a second, basically straight, radially extending main groove angled relative to the first, basically straight main groove.

Hereby, it is possible to sharpen the teeth when they become dull. Furthermore, it is possible to replace dull teeth with new ones or sharpened ones.

Hereby, it is possible to prevent insert members from being radially displaced when the insert members have been inserted into the main groove.

It may be an advantage that the grooves are angled relative to the longitudinal axis of the scraping roller.

Hereby, it is possible to provide scraping roller with teeth having an outer geometry corresponding to the majority of prior art scraping rollers available on the marked today.

It may be beneficial that the inner structure comprises a locking structure configured to prevent the scraping teeth from moving axially along the longitudinal axis of the scraping roller.

Hereby, it is possible to keep the scraping teeth in fixed positions with respect to the inner structure.

It may be advantageous that the locking structure is an end plate configured to be attached to the end portion of the inner structure.

Hereby, it is possible to prevent the scraping teeth from moving axially along the longitudinal axis of the scraping roller in an easy manner.

It may be beneficial that the locking structure is an end plate configured to be attached to the end portion of the inner structure, wherein the end plate comprises a centrally arranged opening.

Hereby, the opening can receive a driving member for driving the scraping roller.

It may be an advantage that an opening is provided in the inner structure.

It may be beneficial that axially extending bores (threaded bores) are provided in the end portion(s) of the inner structure.

Hereby, it is possible to fix an end plate to the end portion(s) of the inner structure by means of bolts or screws.

It may be an advantage that the protrusion members are provided with an outer recess.

Hereby, the outer recess can be used as a guide structure configured to receive a contact member.

It may be advantageous that the scraping roller comprises a locking mechanism comprising a slidably arranged pin member configured to be brought into a corresponding cavity in order to prevent the insert member from moving axially along the longitudinal axis of the scraping roller.

Accordingly, the pin member can be inserted into the cavity in such a manner that the pin member is arranged to prevent the insert member from moving axially along the longitudinal axis of the scraping roller.

It may be an advantage that the scraping roller comprises a connection member configured to be moved by using an activation unit.

The connection member may be configured and arranged to be moved upon activating a pneumatic activation unit.

The connection member may be configured and arranged to be moved upon activating an electrical activation unit that may comprise an electrical actuator.

The connection member may be configured to be moved by using one or more mechanical units of any suitable type (not shown) e.g. a cotter pin, a split pin, a dowel or a bolt or a screw.

Description of the Drawings

The invention will become more fully understood from the detailed description given herein below. The accompanying drawings are given by way of illustration only, and thus, they are not limitative of the present invention. In the accompanying drawings:

Fig. 1A shows a schematic perspective view of an inner structure of a scraping roller according to the invention;

Fig. 2 shows a schematic perspective view of a scraping roller according to the invention;

Fig. 3 shows a schematic perspective view of a scraping roller according to the invention provided with an end plate;

Fig. 4A shows a schematic perspective view of an inner structure of a scraping roller and one insert member according to the invention;

Fig. 4B shows a schematic perspective view of an inner structure of a scraping roller and a plurality of insert members according to the invention;

Fig. 5A shows a first schematic view of a locking mechanism according to the invention;

Fig. 5B shows another schematic view of the locking mechanism shown in Fig. 5A;

Fig. 6 shows a schematic view of a prior art scraping roller;

Fig. 7A shows a perspective top view of an inner structure according to the invention;

Fig. 7B shows a perspective top view of an inner structure arranged next to a one-piece body according to the invention;

Fig. 8A shows a schematic perspective view of a scraping roller according to the invention;

Fig. 8B shows a perspective top view of an inner structure according to the invention having straight receiving portions and protrusion members;

Fig. 8C shows a perspective top view of a first tooth arranged adjacent to a second tooth on the same structure

Fig. 8D shows a cross-sectional view of a segmented scraping roller according to the invention in a separated configuration and

Fig. 8E shows a cross-sectional view of the segmented scraping roller shown in Fig. 8D.

Detailed description of the invention

Referring now in detail to the drawings for the purpose of illustrating preferred embodiments of the present invention, a perspective view of an inner structure 30 of a scraping roller according to the invention is illustrated in Fig. 1.

The inner structure 30 comprises a centrally-arranged cylindrical opening 10 configured to receive a driving member, e.g. a driving shaft of a sharpening machine (not shown). The inner structure 30 comprises a plurality of protrusion members 4, 4', 4". A receiving portion 6, 6', 6" is provided between adjacent protrusion members 4, 4', 4". The protrusion members 4, 4', 4" are basically V-shaped structures provided with a recess 8, 8' extending along the length of the protrusion members 4, 4', 4". Each receiving portion 6, 6', 6" is provided with a first groove member 12 and a second groove member 14. The receiving portions 6, 6', 6" and the groove members 12, 14 extend along the length of the inner structure 30. A plurality of openings 18 are provided in the inner structure 30. In one embodiment of the invention, the inner structure 30 comprises two openings 18 in each receiving portion 6, 6', 6". The openings in the receiving portions 6, 6', 6" can be used to radially displace a locking member into an insert member (see Fig. 4A and Fig. 4B).

The inner structure 30 comprises an end portion 16 provided with a plurality of bores 42, 42'. These bores 42, 42' may be formed as threaded bores 42, 42' configured to receive corresponding bolts or screws (see Fig. 3).

The receiving portions 6, 6', 6" of the inner structure 30 are configured to receive insert members (see Fig. 2, Fig. 3, Fig. 4A and Fig. 4B).

Fig. 2 illustrates a schematic perspective view of a scraping roller 2 according to the invention. The scraping roller 2 comprises an inner structure as shown in Fig. 1. The scraping roller 2 comprises a plurality of insert members 20, 20', 20" arranged on the outer surface of the scraping roller 2. Hereby, each insert member 20, 20', 20" constitutes a V-shaped scraping tooth 44, 44', 44" configured to scrape the skin side of a fur. Such fur is typically arranged on a mandrel with the skin side facing outwards during the scraping process. Normally, a scraping roller is arranged on each side of the mandrel.

The inner structure comprises a centrally-arranged cylindrical opening 10 arranged to receive a driving member for driving the scraping roller. The inner structure is provided with an end portion 16 provided with a plurality of threaded bores 42, 42' arranged to receive corresponding bolts or screws (see Fig. 3).

The inner structure is provided with a plurality of protrusion members 4, 4', 4". The insert members 20, 20', 20" have been inserted into the receiving portions provided between adjacent protrusion members 4, 4', 4". The receiving portions extend along the length of the scraping roller 2.

Hereby, it is possible to replace the insert members 20, 20', 20" when the teeth 44, 44' of the scraping roller 2 become dull. Instead of throwing away the entire scraping roller 2, it is possible to replace the insert members 20, 20', 20" with new once. Accordingly, waste can be reduced significantly.

The scraping roller 2 comprises ten insert members 20, 20', 20" constituting ten teeth 44, 44'. In another embodiment, the scraping roller 2 may comprise another number of insert members 20, 20', 20". The scraping roller 2 may, by way of example, comprise nine, eleven, or twelve insert members 20, 20', 20".

Fig. 3 illustrates a schematic perspective view of a scraping roller 2 according to the invention provided with an end plate 26. The scraping roller 2 comprises an inner structure that has received a plurality of insert members 20, 20', 20" arranged on the outer surface of the scraping roller 2. Each insert member 20, 20', 20" hereby constitutes a V-shaped scraping tooth 44, 44', 44" configured to scrape the skin side of a fur.

In order to prevent the insert members 20, 20', 20" from moving axially along the longitudinal axis X of the scraping roller 2, an end plate 26 is attached to the end portion of the scraping roller 2. The end plate 26 is attached to the end portion of the scraping roller 2 by means of eight bolts 28, 28', 28". An end plate 26 is attached to both end portions of the scraping roller 2. Accordingly, the end plates 26 prevent the insert members 20, 20', 20" from moving axially along the longitudinal axis X of the scraping roller 2.

Fig. 4A illustrates a schematic perspective view of an inner structure 30 of a scraping roller and one insert member 20 according to the invention. The inner structure 30 corresponds to the one shown in Fig. 1.

The inner structure 30 comprises a centrally-arranged cylindrical opening arranged to receive a driving member. The inner structure 30 comprises a plurality of protrusion members 4, 4' and receiving portions 6 provided between adjacent protrusion members 4, 4'. The protrusion members 4, 4' are essentially V-shaped and are provided with a recess extending along the length of the protrusion members 4, 4'. Each receiving portion 6, 6' is provided with a first groove member 12 and a second groove member 14. The receiving portions 6 and the groove members 12, 14 extend along the entire length of the inner structure 30.

The inner structure is provided with an end portion provided with a plurality of threaded bores 42, 42' arranged to receive corresponding bolts as shown in Fig. 3.

The insert member 20 comprises a first tongue member 22 protruding from the bottom portion of the insert member 20. The insert member 20 also comprises a second tongue member 24 protruding from the opposite side of the bottom portion of the insert member 20. The insert member 20 constitutes a scraping tooth 44 configured to scrape the skin side of a fur.

The insert member 20 is configured to be inserted into a receiving portion 6 of the inner structure 30 in such a manner that the first tongue member 22 is received by the first groove member 12 and the second tongue member 24 is received by the second groove member 14.

The insert member 20 is made in a flexible material which can be bent to fit the V-shaped form of the receiving portion 6 and the groove members 12, 14 of the receiving portion 6.

The inner structure 30 comprises two openings 18 in each receiving portion 6. These openings 18 are configured to radially displace a locking member into the insert member 20 in order to prevent the inset members 20 from moving axially (along the longitudinal axis X of the scraping roller 2).

Fig. 4B illustrates a schematic perspective view of the inner structure 30 shown in Fig. 4A and a plurality of insert members 20, 20', 20". Each insert member 20, 20', 20" constitutes a tooth 44, 44', 44" configured to scrape the skin side of a fur.

The insert members 20, 20', 20" are configured to be inserted into corresponding receiving portions of the inner structure 30 in such a manner that the first tongue member of an insert member is received by a first groove member of the receiving portion, and the second tongue member of the insert member is received by a second groove member of the receiving portion. The insert members are capable of bending in order to fit the V-shaped form of the receiving portions and their groove members.

When the insert members 20, 20', 20" have been inserted into the corresponding receiving portions of the inner structure 30, end plates (as shown in Fig. 3) may be attached to the end portion of the scraping roller 2 in order to prevent the insert members 20, 20', 20" from moving axially (along the longitudinal axis of the scraping roller 2).

Fig. 5A illustrates a first schematic view of a locking mechanism according to the invention, whereas Fig. 5B illustrates another schematic view of the locking mechanism shown in Fig. 5A.

The locking mechanism comprises a slidably arranged pin member 32 configured to be brought into a corresponding cavity 34 in order to prevent the insert member 20 from moving axially along the longitudinal axis of the scraping roller. A connection structure 36 connects the pin member 32 and an elongated connection member 40. The pin member 32 is arranged in a space 38 shaped to allow for radially displacing the pin member 32 in order to bring the pin member 32 from a first unlocked position (shown in Fig. 5A) into a second locked position (shown in Fig. 5B) by moving the pin member 32 in the direction indicated by the arrow.

The space 38 is provided in an inner structure 30 of a scraping roller according to the invention. The cavity 34 provided in the insert member 20 extends in extension of the space 38. Hereby, it is possible to displace the pin member radially along the length of the space 38 and further into the cavity 34 in the insert member 20 in order to prevent the insert member 20 from moving axially along the longitudinal axis of the scraping roller.

In Fig. 5B, the connection member 40 has been pressed into the space 38. Hereby, the elongated connection member 40 has displaced the connection structure 36 and the pin member 32 towards the cavity 34. Accordingly, the pin member 32 is inserted into the cavity 34.

Therefore, the pin member 32 is arranged to prevent the insert member 20 from moving axially along the longitudinal axis of the scraping roller.

The connection member 40 may be moved by using any suitable activation unit. The connection member 40 may be moved upon activating a pneumatic activation unit (not shown). The connection member 40 may alternatively be moved upon activating an electrical activation unit that may comprise an electrical actuator (not shown). The connection member 40 may be moved by using one or more mechanical units of any suitable type (not shown) e.g. a cotter pin, a split pin, a dowel or a bolt or a screw.

Fig. 6 illustrates a schematic view of a prior art scraping roller 46. The prior art scraping roller 46 comprises a centrally-arranged cylindrical opening 50 and a plurality of teeth 52, 52' provided at the outer surface of the scraping roller 46. A large quantity of material is provided between the teeth 52, 52' and the opening 50. Accordingly, the solid portion 48 provided between the teeth 52, 52' and the opening 50 is wasted when the scraping roller 46 is thrown away.

When using a scraping roller according to the invention, it is not necessary to throw away the portion provided between the opening and the teeth 52, 52'. Accordingly, the invention makes it possible to reduce waste significantly.

Fig. 7A illustrates a perspective top view of an inner structure 30 according to the invention. The inner structure 30 comprises a first portion 54 and a second portion 56. The first portion 54 and the second portion 56 are separated from each other in Fig. 7A. Both the first portion 54 and second portion 56 are basically cylindrical and provided with an end portion 16 and a plurality of protrusion members 4, 4' and receiving portions 6, 6' provided there between. An opening 10 is provided in the end portion 16 of the second portion 56. Each protrusion member 4, 4' is provided with a recess 8, 8' extending along the length of the protrusion member 4, 4'. Each receiving portion 6, 6' is provided with a first groove member 12, 12' and a second groove member 14, 14'. The groove members 12, 12', 14, 14' of the first portion 54 extend along the length of the first portion 54, whereas the groove members 12, 12', 14, 14' of the second portion 56 extend along the length of the second portion 56.

Each of the groove members 12, 12', 14, 14' is configured to receive an insert member (e.g. like the one shown in Fig. 4A). Hereby, a required number of insert members can be mechanically attached to the first portion 54 and the second portion 56 of the inner structure 30 in an easy manner. The insert members constitute scraping teeth configured to scrape the skin side of a fur, wherein the scraping teeth are provided along the cylindrical outside surface of the inner structure 30. It is preferred, that the insert members comprise a first tongue member protruding from one side of the bottom portion of the insert member and a second tongue member protruding from the opposite side of the bottom portion of the insert member, wherein the tongue members are shaped and configured to be received by the groove members 12, 12', 14, 14'.

The first portion 54 and the second portion 56 may be attached to each other by any suitable type of attachment structures. In one embodiment according to the invention, the first portion 54 and the second portion 56 comprise corresponding engagement structures configured to lockingly engage the first portion 54 into the second portion 56. Such corresponding engagement structures may comprise pin structures, corresponding tongue and groove structures, and corresponding threaded structures by way of example.

Fig. 7B illustrates a perspective top view of an inner structure 30 arranged next to a one-piece body 60 according to the invention. The one-piece body 60 comprises a plurality of insert members 20, 20' each having a V-shaped tooth 44, 44'. Each insert member 20, 20' has a first tongue member 22, 22' and a second tongue member 24, 24' configured to be received by corresponding groove members 12, 12', 14, 14' in axially extending receiving portions 6 provided in the inner structure 30. In order to prevent the inner structure 30 from moving axially relative to each other, an end cover may be inserted into the end portion of the inner structure 30. Any suitable structure may be used to prevent axial displacement of the inner structure 30 with respect to the one-piece body 60.

The one-piece body 60 comprises an opening 58 having a geometry that is configured to receive the outer geometry of the inner structure 30. Hereby, the one-piece body 60 can be lockingly engaged with the outer geometry of the inner structure 30.

It is possible to divide the one-piece body 60 into several sections. In one embodiment according to the invention, the one-piece body 60 is divided into two sections. In another embodiment according to the invention, the one-piece body 60 is divided into three sections. In a further embodiment according to the invention, the one-piece body 60 is divided into three or four sections. The sections are not required to have similar sizes or to comprise the same number of teeth.

The inner structure 30 may receive a plurality of insert members e.g. like the one shown in Fig. 8C.

Fig. 8A illustrates a schematic perspective view of a scraping roller 2 according to the invention. The scraping roller 2 comprises an inner structure having straight receiving portions like the inner structure shown in Fig. 7B. The scraping roller 2 comprises a one-piece body provided with a plurality of teeth 44, 44', 45, 45' arranged in V-formations. The one-piece body is attached to the inner structure. The one-piece body comprises an end portion 16 provided with an opening 10. The end portion 16 is screwed into the inner structure. Hereby, the one-piece body is prevented from being axially displaced relative to the inner structure.

Instead of attaching a one-piece body 60 to the inner structure, it is possible to attach a plurality of inset member 20 provided with a single set of teeth 43, 43' to the inner structure. Such an inset member 20 is shown in Fig. 8C.

Fig. 8C illustrates a perspective top view of a first tooth 43 arranged adjacent to a second tooth 43' on the same insert member 20. The insert member 20 is provided with a first straight tongue member 22 and a second straight tongue member 24.

Fig. 8B illustrates a perspective top view of an inner structure 30 according to the invention having straight receiving portions 6, 6' and protrusion members 4, 4'. Each receiving portion 6, 6' is provided with a first groove member 12 and a second groove member 14. The receiving portions 6, 6 and the groove members 12, 14 extend parallel to the longitudinal axis of the inner structure 30. The inner structure 30 is configured to receive insert members like the one shown in Fig. 8C or alternatively structures comprising several insert members e.g. a one-piece body like the one shown in Fig 7B.

Fig. 8D illustrates a schematic, cross-sectional view of a segmented scraping roller 2 according to the invention in a separated configuration. The scraping roller 2 comprises a first portion 54 axially separated from a second portion 56. The scraping roller 2 comprises a first tooth 44 and a second tooth 45 configured and shaped to be attached to the first portion 54 and the second portion 56. The first portion 54 is provided with a groove member 62 configured to engagedly receive a corresponding tongue member 64 provided in the proximal end of the second portion 56. The teeth 44, 45 are restricted from being displaced axially towards the end portion 16 of the first portion due to the surrounding portion of the end portion 16.

Fig. 8E illustrates a cross-sectional view of the segmented scraping roller 2 shown in Fig. 8D, in a closed configuration. The first portion 54 and the second portion 56 have been attached to each other. The tongue member 64 has been received by the groove member 62. The teeth 44, 45 are sandwiched between the end portion of the first portion 54 and the end portion 16 of the second portion 16.

List of reference numerals 2 Scraping roller 4, 4', 4" Protrusion member 6, 6', 6" Receiving portion 8 Recess 10 Opening 12, 14 Groove member 16 End portion 18 Opening 20, 20', 20" Insert member 22, 24 Tongue member 26 End plate 28, 28', 28" Bolt 30 Inner structure 32 Pin member 34 Cavity 36 Connection structure 38 Space 40 Connection member 42, 42' Bore 43, 43' 44, 44' Tooth 44", 45, 45' Tooth 46 Prior art scraping roller 48 Solid portion 50 Opening 52, 52' Tooth 54 First portion 56 Second portion 58 Opening 60 One-piece body 62 Groove member 64 Tongue member X Longitudinal axis

Claims

A scraper roller (2) for scraping the skin side of an animal skin, such as a mink skin, wherein the scraper roller (4) comprises several scraper teeth (44, 44 ', 44') disposed on the outside of the scraper roller (2), the scraper teeth ( 44, 44 ', 44') are removably attached to the scraper roller (2), the scraper roller (2) comprises an inner structure (30) equipped with projections (4, 4 ', 4 ") and receiving members (6, 6'). , 6 ") provided between adjacent projections (4, 4 ', 4"), in which the scraper teeth (44, 44', 44 ') are shaped as insert elements (20, 20', 20 ") which are designed for engaging the receiving portions (6, 6 ', 6 "), characterized in that the receiving portions (6, 6', 6") comprise a first, substantially straight, radially extending primary recess, and a second, substantially straight primary groove extending radially angled with respect to the first, substantially straight primary groove.

Scraper roller (2) according to claim 1, characterized in that the projections (4, 4 ', 4 ") are substantially V-shaped or straight.

Scraper roller (2) according to claim 1 or 2, characterized in that each receiving part (6, 6 ', 6 ") is provided with a first recess element (12).

Scraper roller (2) according to claim 3, characterized in that each receiving part (6, 6 ', 6 ") is provided with a different recess element (14).

Scraper roller (2) according to any of the preceding claims 3-4, characterized in that the insert elements (20, 20 ', 20 ") comprise a first tongue unit (22) which is designed to be received by it. first recess element (12).

Scraper roller (2) according to any of the preceding claims 4-5, characterized in that the insert elements (20, 20 ', 20 ") comprise another tongue unit (24) which is designed to be received by it. second recess (14).

Scraper roller (2) according to any one of the preceding claims, characterized in that the inner structure (30) comprises a locking structure (26, 32) which is designed to prevent the scraper teeth (44, 44 ', 44'). ) in moving axially along the longitudinal axis (X) of the scraper roller (2).

Scraper roller (2) according to claim 7, characterized in that the locking structure (26) is an end plate (26) which is designed to be attached to the end part (16) of the inner structure (30).