EP2956272B1 - Brush deburring machine for combined cutting with individual deburring - Google Patents

Description

The invention relates to a deburring machine for ends of cut-to-length sections of a long profile and to a method for deburring ends of cut-to-length sections of a long profile.

Deburring machines, in particular brush deburring machines, are already known in the art DE 10 2010 046 392 A1 known. Brush deburring machines are generally not used on their own, but in combination with pipe cutting machines that cut lengths of pipe from a metal pipe at high speeds. The cut sections are then treated further. The further treatment can take place in various sequential process steps, in particular pipe ends can be chamfered and / or washed and / or deburred. The brush deburring machine frees the ends and cut surfaces of the metal tubes during their transport by means of transport discs from sharp burrs left over in the cutting process.

From the US 6,206,763 B1 a brush deburring machine is known which transports pipe sections by means of drivers along oppositely rotating brush rollers. The pipe sections are fed individually to the Bust deburring machine.

In the DE 80 16 246 U1 a brush deburring machine is disclosed, the pipe sections fed individually and deburred by rotating brush rollers.

To increase the number usually long profiles are not individually cut to length, but it will be formed stack of long profiles, and from the stacks of long sections of sections are cut to lengths, which are then fed to a further processing. A disadvantage of this type of stacking is that the successive and in contact with each other standing sections of long profiles cut along their entire circumference evenly processed in the subsequent steps, in particular can not be uniformly deburred, since the sections shield each other by the contact and protect ,

It is therefore an object of the present invention to provide a deburring machine and a method of the type mentioned above, which avoids or at least reduces the disadvantages mentioned.

The object is met in a first aspect by an aforementioned deburring machine with the feature of claim 1 and in a second aspect by a method having the features of claim 7.

Preferred embodiments of the deburring machine are the subject of the respective subclaims.

The deburring machine according to the invention is characterized on the one hand by a receptacle for a stack or a bundle of cut sections of a long profile and by a separating device for the sections and a transport device for the individual sections and at least one arranged along the transport brush, which preferably rotates and during the transport of the separated sections is in contact with the ends of the individual sections and deburred by the rotation of the cut surfaces of the cut sections.

The deburring machine according to the invention makes it possible in a simple manner to maintain a multiple cut which is important for the speed of the sawing process, by cutting through stacks or bundles of long profiles and by further processing the stack or bundles of sections forming thereby. Nevertheless, each individual section is subjected to individual treatment by the brushes by the singulator, and therefore the deburring process is performed as carefully as if the sections had been individually cut to length from the long profile and individually fed to further processing, in particular deburring.

According to the invention, the transport device has two rows of transport disks arranged side by side in the transport direction, which have pairs of recesses opposite to the transport direction for receiving the individual sections. Each row of transport discs comprises staggered, partially overlapping even and odd transport discs. In this case, 'even' and 'odd' refers to the consecutive in the transport direction numbering of the transport discs. The straight transport discs are coupled together and the odd transport discs are coupled together.

The receptacle, in which the stack or the bundle of sections is first inserted, is dimensioned to receive a plurality of sections. However, the recesses of the transporting disks are each dimensioned only to receive a single section. The pairwise opposite recesses allow the Recording a single cut-to-length section. The cut sections are vortransportierbar by rotation of the transport discs in the transport direction. The rotation is preferably clocked and during each clock in the same direction.

According to the invention, the stack or bundle can be inserted directly into the receptacle at portions under immediate contact with the recess. If the recess is not positioned to be part of the receptacle, the stack or bundle will make direct contact with the transport disc. However, if the transport disk is rotated so far that one of the recesses is part of the receptacle, preferably arranged directly adjacent to the stop, the entire stack or the entire bundle can be inserted into the receptacle such that preferably exactly one section is positioned in the associated recess is and makes contact with the wall of the recess.

In a particularly preferred embodiment of the invention, the receptacle comprises alternating Einzelaussparungspaare and at least one arranged in the direction of rotation of the first transport disc before recording stop and a arranged in the rotation direction behind the stack receiving holder. The receptacle is therefore made variable during the entire deburring process of a stack or bundle of sections, although it has a constant stop and a constant holder, but changing Aussparungspaare.

In a preferred embodiment of the invention, a transfer device of the stack or the bundle is provided at portions of a cutting device directly into the receptacle of the deburring machine. The transfer device is preferably designed as a gripper, which engages the simultaneously cut sections as a stack or bundle and inserts as a stack or bundle in the receptacle, where they have direct contact with the associated recess or the pair of recesses.

Conveniently, odd recesses of an odd transport disc have a greater length along the circumference than a depth in the radial direction, and recesses of a straight transport disc have a smaller length along the circumference than a depth in the radial direction. By arranging successive straight and odd transport disks with the respective recesses, it is possible to transfer non-rotationally symmetrical, for example, flat-oval profiles from one transport disk pair to the next, even in cross-section.

In a further embodiment of the invention, angular distances of adjacent recesses of straight and odd transport disks are formed differently from one another.

In its second aspect, the invention is achieved by a method of deburring ends of a cut-to-length section of a long profile, preferably by means of one of the above-described deburring machines, by placing a stack or bundles of cut-to-length sections into a receptacle which isolates portions of the stack or bundle and then transporting the separated portions along a transporting direction and brushing the ends, preferably the cut surfaces, during transport. The essential feature of the invention is that, despite the introduction of a stack or bundle of cut-to-length sections into a deburring machine, the actual brushing process takes place individually for each section and the entire stack is not brushed in the form of a stack.

According to the invention, the first transport disk pair is rotated continuously in a constant direction of rotation, and at each cycle, a lowermost, radially innermost portion of the section stack or bundle is taken in the transport direction and later transferred to the second transport disk pair.

Several stacked long profiles are cut to length at the same time and the stack or the bundle of cut-to-length sections is inserted into a receptacle.

The stack or bundle is inserted directly into the receptacle, the receptacle also having a recess here with the correct position of the first transport disc pair, so that the stack or bundle conveniently when inserting into the receptacle immediate contact with a wall of the recess of the first pair Transport discs accommodates, so that the inserted stack or the inserted bundle does not have to roll to the recess, but the sections of the stack or the bundle are separated directly and simultaneously transported by the transport disc.

Fig. 1

die Teilansicht einer Bürstentgratemaschine zur Aufnahme eines Stapels von Flachovalprofilen,

Fig. 2

perspektivische Ansicht einer Bürstentgratemaschine gem. Fig. 1,

Fig. 3

Detailansicht einer Bürstentgratemaschine zur Aufnahme eines Bündels von Rohrabschnitten.

The invention will be described with reference to two embodiments in three figures. Showing:

Fig. 1

the partial view of a brush deburring machine for receiving a stack of Flachovalprofilen,

Fig. 2

Perspective view of a brush deburring machine acc. Fig. 1 .

Fig. 3

Detail view of a brush deburring machine for receiving a bundle of pipe sections.

In Fig. 1 schematically a section of a brush deburring machine 1 is shown without brushes. Brush deburring machines 1 are provided at the end of a chain of processing steps for cutting sections of a metallic hollow or solid profile.

Fig. 1 shows a brush deburring machine 1 for deburring inserted in stacks 2 in the brush deburring machine, cut to length Flachovalprofilabschnitte 3. Under Flachovalprofilabschnitten 3 are understood to cross sections perpendicular to the longitudinal direction of the section flattened tube cross-sections. A longest outer diameter is longer, in particular 10%, 20% 30% or 50% or even twice as long or even longer than a shortest outer diameter. There are also length ratios between the mentioned length ratios possible. The cross section is hollow inside. The Flachovalprofilabschnitte 3 can be cut from a single long profile or as in Fig. 1 represented simultaneously from a stack of long profiles and then inserted as a stack 2 of Flachovalprofilabschnitten 3 in a stack recording 4.

In Fig. 1 Three flat oval metallic long profiles are stacked on top of one another and sawed off at the same time. The three superimposed flat oval profile sections 3 which are arranged one above the other after the cut are gripped as a triple stack 2 by a gripper (not shown) and inserted into the stack receiver 4 of the brush deburring machine 1.

The brush deburring machine 1 has pairs of opposite transport disks T ₁ , T ₂ . The transport disk pairs are arranged along a transport direction T. The transport discs T ₁ , T ₂ are arranged offset in the transport direction T and allow by rotation and transfer the transport of Flachovalprofilabschnitte 3 along the transport direction T. During their transport along the transport direction T the outermost ends of Flachovalprofilabschnitte 3 are deburred by along a rotating, arranged in its longitudinal axis in the transport direction T, in Fig. 1 Brush not shown are performed. The rotating brush removed on the one hand during the sawing and resulting on the cut surface of Flachovalprofilabschnitts 3 remaining chips, on the other hand but also by the sawing off the Flachovalprofilabschnitte 3 at the edge of the cut surface forming sharp burr. The sharp burr, the outer surface of each of the Flachovalprofilabschnitte 3 outside completely rotate.

Pairs of odd transport disks T ₁ are gem. Fig. 1 arranged in the transport direction closer to each other than the pairs of straight transport disks T ₂ . This makes it possible to arrange the odd T ₁ and the straight transport disks T ₂ overlapping each other and thus the in Fig. 1 illustrated transfer individual Flachovalprofilabschnitte 3 of a pair of transport disks T ₁ to directly adjacent pair of transport disks T ₂ to allow.

The first and the odd transport disks T ₁ have along their outermost periphery flat, long odd recesses 111, which are adapted to the size of the cross section of the transported Flachovalprofilabschnitts 3. Each odd notch 111 is intended to receive exactly one end portion of a flat oval profile section 3. The Flachovalprofilabschnitt 3 is located at its two end portions on a respective transport disk T ₁ , T _{2 of} the transport disk pair and is conveyed by rotation of the transport disks T ₁ to the next pair of transport disks T ₂ and handed over in the overlap area.

The straight recesses 112 of the second and the straight transport disks T ₂ are also adapted to the cross sections of the Flachovalprofile, however, the straight recesses 112 along the circumference of the straight transport disks T ₂ are arranged and at 90 ° about an axis perpendicular to the transport direction T against the odd recesses 111th the odd transport discs T ₁ rotated so that the straight recesses 112 along the circumference of the straight transport discs T _{2 are} narrow but formed along a radius R deep. A depth of the straight recesses 112 substantially corresponds to a long diameter of the flat oval profile section 3, while a width of the straight recesses 112 substantially corresponds to the short diameter of the flat oval section 3, while the depth and width of the odd recesses 111 are exactly reversed.

The transport disks T ₁ , T ₂ rotate along the transport direction alternately and clocked. The clocked rotation of the straight transport disks T ₂ is adapted to the timing of the odd transport disks T ₁ . With clocked rotation of the odd transport discs T ₁ , these are at an angle α ₁ , which is substantially the length of the odd notch 111 plus the distance to a directly following odd Recess 111 corresponds to pre-transported. Then, the rotation of the odd transport discs T _{1 is} stopped. After the odd transport disks t1 are stopped, on the one hand, the next Flachovalprofilabschnitt 3 falls into the next odd recess 111, on the other overlap in the stop position of the odd transport disks T ₁ odd and even recesses 111, 112 to pass a Flachovalabschnitt. After the rotation of the first transport discs T _{1 is} stopped, the straight transport discs T ₂ rotate in one cycle by an angle α ₂ , which corresponds substantially to the width of the straight recesses 112 plus the distance between two straight recesses 112 from each other. The straight transport disks T ₂ stop at the end of the cycle in a position in which the straight recesses 112 are arranged in a lateral view along the circumference of the odd transport disks T ₁ . There, the straight transport disks T _{2 are} stopped, and the first transport disk T ₁ rotates in turn in an ensuing cycle by an angle α ₁ . The angles α ₁ and α ₂ are the same size here.

The stack holder 4 forms a separating device for the Flachovalprofilabschnitte 3 of the inserted stack 2. The separating device comprises a stop 30 fixed in relation to a frame (not shown) of the brush deburring machine 1, and a rear holder 31 and two flat odd recesses 111 changing in the step cycle of the pair of odd transporting disks T ₁ .

After inserting the stack 2 of cut flat oval profile sections 3 in the stack recording 4 is the odd transport disk T ₁ facing, so the radially inner side of Flachovalprofilabschnitts 3 in the flat odd notch 111, and he fills them substantially completely. In particular, a radial circumference of the odd transport pulleys T ₁ extends along the radially outer side of the flat oval profile section 3 inserted into the odd notch 111. By rotating the first transport pulleys T ₁ , the radially inner flat oval profile section 3 is pulled away below the stack 2. The other two Flachovalprofilabschnitte 3 are pressed against the stop 30 and prevented by the stop 30 on further rotation. After completion of the first clock, the following empty odd notch 111 is positioned in the stack receiver 4. The now lowest Flachovalprofilabschnitt of the stack 2 falls into the free odd recess 111 and the next clock begins. In this case, as many cycles go through until the entire stack 2 has been removed at Flachovalprofilabschnitten 3. Thereafter, a new stack 2 is inserted at Flachovalprofilabschnitten 3 in the stack recording 4. The step-by-step removal of the stack 2 is the separation of the flat oval profile sections 3.

By separating the sawn-off flat oval profile sections 3, the rotating brush is made possible to completely remove the ridge forming along the entire circumference of the sectional surface of the section 3. In particular, the burr can also be removed at the locations which are in contact with one another in the stack arrangement and are therefore difficult or impossible to access for a rotating brush.

Fig. 2 schematically shows the entire brush deburring machine 1 gem. Fig. 1 with two odd transport disks T ₁ and two straight transport disks T ₂ as well as a singling device with stack receptacle 4 and a rotating brush 40 for deburring the cut surfaces of the singular flat oval profile sections 3.

Fig. 3 shows one opposite the Fig. 1 other embodiment of the brush deburring machine 1, which is intended to receive a bundle 50 of, here four, circular profile sections 51. The circular profile sections 51 are inserted in a bundle 50 of four sections in a bundle receptacle 4, which in turn includes a leading in the direction of rotation of the first transport disk T ₁ stop 30 and a returning holder 31. The radial depth of the first recesses 111 of the odd transport disks T ₁ is dimensioned so that it substantially corresponds to a diameter of the circular profile sections 51. By step timing are also here, as in the embodiment acc. Fig. 1 , the circular profile sections 51 pulled out successively under the remaining bundle 50 of the circular profile sections 51 and conveyed forward with the first transport discs T ₁ in the transport direction T.

The odd and even transport disks T ₁ and T ₂ are arranged in such a way to each other in both embodiments, that the acquisition and transfer of the sections 3, 51 is arranged at an angle of 90 ° rotated along the transport disk T ₁ , T ₂ , so that in a brush deburring machine. 1 for deburring a stack 2 of exactly two sections of a double section, the straight and odd recesses 111, 112 each have an angular distance of α ₁ = α ₂ = 45 ° from each other, at an angle of three α intersection α ₁ = α ₂ = 30 ° from each other and at have an angular distance of α ₁ = α ₂ = 22.5 ° from each other.

LIST OF REFERENCE NUMBERS

1

Bürstentgratemaschine

2

stack

3

Flat oval profile section

4

Pickup / Batch Pickup / Bundle Pickup

30

attack

31

holder

40

brush

50

bunch

51

Circular profile section

111

odd recess

112

straight recess

R

radius

T

transport direction

T ₁

odd transport discs

T ₂

straight transport discs

α ₁

angle

α ₂

angle

Claims (7)

1. A deburring machine for ends of sections (3, 51) of an elongate profile which are cut to length, with a receiving means (4) for a stack (2) or a bundle (50) of sections (3, 51) and a separating device for the sections (3, 51) of the stack (2) or the bundle (50), with a conveying device for the separated sections (3, 51) and at least one brush (40) which is arranged along the conveying device and which is in contact with the ends of the separated sections (3, 51) during the conveying thereof and which deburrs the ends, characterized in that the conveying device has two rows of conveying discs (T₁, T₂), which are arranged next to each other in the direction of rotation (T), which conveying discs have pairs of notches (111, 112) that are located opposite each other perpendicularly to the direction of rotation (T), for receiving a single section (3, 51), and the stack (2) or the bundle (50) on sections (3, 51) under immediate contact with the notch (111, 112) can be directly placed in the receiving means (4).
2. A deburring machine according to Claim 1, characterized in that a receiving means (4) comprises alternating pairs of notches (111) and at least one stop (30) arranged upstream of the alternating pairs of notches and fixed in position.
3. A deburring machine according to Claim 2, characterized in that the receiving means (4) has at least one holding means (31) arranged downstream of the pair of notches in the direction of rotation (T).
4. A deburring machine according to any one of Claims 1 to 3, characterized by a transfer device of the stack (2) or the bundle (50) of sections from the cutting device directly into the receiving means (4) of the deburring machine.
5. A deburring machine according to at least one of Claims 1 to 4, characterized in that odd-numbered notches (111) of odd-numbered conveying discs (T1) have a greater length along the periphery than a depth in the radial direction (R), and notches (112) of even-numbered conveying discs (T2) have a shorter length along the periphery than a depth in the radial direction (R).
6. A deburring machine according to Claims 1 to 5, characterized in that angular distances (α1, α2) of adjacent recesses (111, 112) of even-numbered and odd-numbered conveying discs (T1, T2) are different from one another.
7. A method of deburring ends of sections (3, 51) of an elongate profile which are cut to length, with a deburring machine (1) according to any one of Claims 1 to 6, wherein a stack (2) or bundle (50) of sections (3, 51) cut to length is placed in a receiving means (4), the sections of the stack (2) or bundle (50) are separated, the separated sections (3, 51) are conveyed along a direction of rotation (T) and the ends of the sections (3, 51) are brushed during the conveying, characterized in that a first pair of conveying discs (T₁) is rotated in one direction in a continuously cycled manner, and during each cycle, takes along a radially innermost section (3, 51) of the stack (2) or the bundle (50) in the direction of rotation (T) and transfers it to the second pair of conveying discs (T₂), a plurality of stacked or bundled elongate profiles are cut to length at the same time, and the stack (2) or the bundle (50) of sections (3, 51) cut to length is directly placed in the receiving means (4), and the stack (2) or the bundle (50) placed in the receiving means immediately comes into contact, upon placement in the receiving means (4), with a wall of the notch (111, 112) of the first pair of transport discs (T1).

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