DK175734B1 - Chain link conveyor - Google Patents

Description

DK 175734 B1

The present invention relates to a chain link conveyor of the kind comprising a plurality of like-shaped links, preferably of polymer, plastic or the like, which together form the support surface of the conveyor, which links comprise eye-shaped hinge parts on opposite side edges, the eye-shaped hinge parts being thus mutually provided that adjacent chain links can be connected by a pin or a shaft, and wherein the eye-shaped hinge parts, at least on one side edge, comprise elongate holes, whereby the conveyor is able to absorb transverse displacements of the support surface, where the links are advanced by a drive unit. in a direction of conveyance between a rectilinear receiving area and at least one rectilinear delivery area where the joints are carried 10 on frame surfaces located near the sides of the belt, and wherein the conveyor comprises means for controlling the belt during a parallel displacement of the delivery area relative to the receiving area. over curve areas.

‘Such chain link conveyors in numerous designs and are widely used 15 in the food industry, where such belts are used for the transport of raw materials and finished goods in a production line. Often there is a need to make a parallel displacement of the belt direction, which is possible by using the initially indicated chain links, each of which allows a smaller directional deviation determined by the length of the elongate holes on one side edge of the individual chain links. Said belts can thus be guided in a kind of S-shaped course in fixed guides and carry out said parallel displacement of the conveying surface of the belt.

In some cases it may be necessary to change the horizontal position of the receiving area or the delivery area. There are numerous examples of such conveyors within the baggage transport area, and in particular the horizontal location of the receiving area is displaceable relative to the delivery area, an example of which is given in US 4,618,057, which indicates a chain link conveyor comprising a centrally located chain on top of which arranged wing-like support plates which overlap each other in a difference-like manner, and so that a change of direction will cause the overlap in one side of the support surface of the conveyor to become larger, and in the opposite side j the said overlap to become smaller. Such conveyors can cause a rotation of all the workpieces present on the conveyor belt during the propulsion of the conveyor and during the passage of, for example, one of the said parallel offsets. It must also

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It is noted that the chain conveyor covered by US 4,618,057 is purely

I structurally differs significantly from the initially indicated chain link conveyor, but I

Included in the discussion is evidence that chain link conveyors comprising I

In means for variable parallel displacement of the conveyor belt between a delivery * I

In 5 point and a delivery point is known. IN

I The above-mentioned chain link conveyor type specified in the above-mentioned patent publication I

In US 4,618,057, is not suitable for use in the food industry, ef- I

Since the surfaces forming the support surface of the conveyor overlap, which I

I 10 means that an efficient cleaning of said conveyors is difficult, which naturally- I

I ligvis is completely unacceptable in the food industry, where special I-

read high requirements for hygiene Thus, the invention here is a chain- I

H articulated conveyor, the barrier surface of which appears as an open structure, where the individual I

chain link is preferably made of smooth plastic or polymer, which is relatively easily soluble in

Η 15 clean and disinfect. It should be noted, however, that the chain link conveyor according to the invention

of course, is not limited to use in the food industry alone. IN

It will often be desirable to be able to carry out a variable parallel displacement between I

lem the conveyor's receiver and delivery area, and where the conveyor belts are eff- I

20 actively supported along the entire course, where the continuation takes place, while the I

items carried on the belt after passing the parallel continuation course of I

the conveyor, has not made any rotation relative to the center line. For example I

within the food industry, this need can be expressed, for example by sorting I

of pieces of pig carcases or the like, in various categories, distributed to I

25 different transport routes for further processing / packing. IN

It is the object of the present invention to provide a conveyor of the initiator

where the delivery area of the carrier is variably displaceable

to both sides relative to the receiving area. IN

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Such a conveyor is characterized in that the conveyor belt / joints over the course in I

H the curve areas and a straight distance between the curve areas, between the rectilinear I

H receiving area and the delivery area, are supported by a movable support I

3 DK 175734 B1 comprising a first and a second set of pairs of spaced, uniform, tapered, mirror-inverted, and facing bearing members, respectively, whose spaced-apart side edges have a curved course, which support members are pivotally mounted to the frame surfaces of the receiving area and to the delivery area. frame surfaces, and 5 tapered ends of which are pivotally mounted on a frame further comprising uniform rectilinear support surfaces, the outer sides of which are located in the tangents of the curved courses, and extend at least between the facing sides of the attachment points of the support parts, and wherein the respective rectilinear receiving and delivery areas each comprise uniform, mirror-inverted curved pieces whose rounded 10 side edges are located at a level above the support members but below the level of the conveyor support surface as defined in the characterizing part of claim 1.

In that the conveyor belt is thus supported by the indicated support parts mounted to the frame surfaces of the receiving area and on the frame, it is achieved that the delivery area 15 becomes variably pivotable, and the belt is supported during this entire course during the pivoting, and further obtained by the support parts being identically formed and inverted, the radius of rotation which takes place in connection with the approximately S-shaped course of the chain conveyor becomes identical, i.e. the workpiece which is transported on top of the bearing surface of the belt is not rotated relative to the center axis of the receiving area 20.

In order that the delivery area in connection with a parallel extension in relation to the receiving area may be located at the same distance from the receiving area, the support parts may be axially displaceably mounted to the frame, as stated in claim 25 2.

1 is intended to ensure that the tape does not come loose during the passage of the parallel continuum. where the critical piece is the area where the belt is in the outer radius, the chain link conveyor may be provided with recesses on the support members cooperating with projecting gripping means on the links which together form the support surface of the conveyor belt as stated in claim 3.

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In connection with the variable parallel displacement of the delivery area of the conveyor,

In them there will be an axial displacement of the length of the belt so that the I of the conveyor belt

In bearing surface is longest when the parallel displacement is carried out to a maximum, and I

In which said bearing surface will be shortest when the course between the receiving area and I

In 5 the delivery area runs over a straight line. Mentioned variations in band length as

Due to axial displacements of the support parts can advantageously be collected during transport

In the dryer of an automatic band-length control unit as specified in claim 4. I

In certain cases it may be preferable that the delivery area of the conveyor may I

I 10 is shifted vertically to different levels in order to be able to hand in items that I

transported on the conveyor for further transport on belts / tracks located in I

different levels / floors, which is possible by supplying the conveyor according to the invention

In the section with a raising / lowering unit at the delivery end so that delivery can find I

Instead in several levels, as specified in claim 5. In this context, it must be stated, I

15 that in US 1,766,142 a chain link conveyor is specified, the delivery area of which is I

In vertically displaceable, but the delivery area of said conveyor is not simultaneously I

H laterally displaceable, as is the case with the chain link conveyor according to I

In the invention. IN

The invention is explained in more detail in the following with reference to the drawing, in which I

fig. 1 is a plan view showing the principle of a chain link conveyor of the indicated I

variable species with variable parallel displacement, according to the invention, I

fig. 2 is a plan view of the device shown in FIG. 1, showing the means I

25 for carrying out the variable parallel displacement of the conveyor belt according to I

ge invention, I

H fig. 3 is a stylized side view of the device shown in FIG. 1 with delivery- I

the area in different positions relative to a fixed receiving I

H area, and I

H 30 fig. 4 is a side view of the device shown in FIG. 1 comprising an automatic I

H band length adjustment unit. IN

FIG. 5 is a sectional view taken along the line A-A in FIG. 2 I

5 DK 175734 B1

FIG. 1 is a plan view of a chain link conveyor 2 according to the present invention. The support surface 4 of the conveyor consists of uniform joints 3, which are assembled in a known manner, and the support surface / belt is pulled in the conveying direction 8 by a drive unit 6, cf. Fig. 3.

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The conveyor 2 comprises a rectilinear receiving area 10 and a corresponding rectilinear delivery area 12. As can be seen from fig. 1, the delivery area 12 can be displaced in the lateral direction and, as can also be seen, to a delivery point located at the same distance from the receiving area 10.

10 (1 in those cases where the delivery area 12 is displaced in the lateral direction, the support surface extends over two curve areas 16, 18, as well as a straight course 29 between said curve areas 16, 18.

In FIG. 2. showing the support surfaces of the chain link conveyor 2 according to the invention, the means for guiding the support surface 4 of the belt are seen / guided in the receiving area 10 by support surfaces 14 formed by flat surfaces / frame parts 38, 40 and in the delivery area 12 by the surfaces 14 ' , which consist of flat surfaces / frame parts 40,42. The receiving area 10 is fixed, whereas the location of the delivery area in relation to the orientation of the receiving area is variable.

As can also be seen, the belt link conveyor belt is supported / guided over the course of the curve areas 16, 18 and the straight section 29 between the curve areas, between the rectilinear receiving area 10 and the delivery area 12, by a first and a second set of paired spaced, uniform, tapered, respectively. mirror-inverted, and facing flat support members 20, 22, 24, 26 whose spaced-apart side edges 30, 32, 34, 36 have a curved course. The support members are pivotally mounted to the frame surfaces 38, 40 of the receiving area and to the frame surfaces 42, 44 of the delivery area, and the tapered ends are rotatably and slidably mounted on a frame 28 located between the curved courses 16, 18.

Said frame 28, further comprises uniform rectilinear support surfaces 45, the outer sides of which are located tangentially in the nines 46, 48 of the curved course 30, 32, 34 of the support parts.

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I 36. The support surfaces 45 extend at least between the facing sides of the attachment- I

In the points of action 50, 52, 54, 56 of the support members 20, 22, 24, 26. In this construction I

In it it is achieved that the joints 3 of the chain link conveyor over the curved courses 16, 18, and I

In the rectilinear course 29 between these, are fully supported, regardless of the degree of

M 5 the shooting of the delivery area 12. I

I The respective rectilinear reception and delivery areas each comprise equal, I

In mirror curved pieces 58,60,62, 64 with rounded side edges 66,68, 70,72 which are I

I located at a level above the support members 20, 22, 24, 26, cf. fig. 5, but below the level of I

I 10 the support surface of the conveyor 4. The curve pieces 58, 60 thus help to guide the track- I

In that from the rectilinear course in the receiving area 10 over to the first curve area 16, and I

The curve pieces 62, 64 help to guide the belt from the second curved course 18, I

I over to the parallel delivery area 12. I

Displacement of the delivery area 12 in the lateral direction, relative to the receiving area 10 I

is performed by displacing the frame 28 by known means, such as a stem

pel, drive motor or the like, as indicated in fig. 2. It is noted that a lateral I

In displacement of the delivery area 10, in the embodiment shown of the chain link conveyor.

In the dry according to the invention, will result in a combination of a lateral and an axial front

Sliding the attachment points 50, 52, 54, 46 for the support members 20, 22, 24, 26, in advance.

hold to the direction of travel of the conveyor, and this also means to carry- I

the parts 20,22,24,26 are further axially displaceably mounted on the frame 28. as all- I

already listed. The advantage of this is that the delivery area 12, regardless of the degree of the variable I

oscillation of this will be located at the same distance from the receiving area 10. I

I 25 I

As can further be seen from Fig. 5, at least the curved course 30, I of the support parts has

32, 34, 36, (but typically all of the support surfaces), on it away from the conveyor belt I

H bearing surface 4 facing side, a recess 74 cooperating with gripping means 76, on the I

. facing the bearing surfaces facing the side of the joints 3. The gripping members 76 engage I

30 recess 74, thus preventing the belt from lifting during passage of the curved I

In course 16.18. IN

7 DK 175734 B1

As indicated in FIG. 4, variations in belt length due to axial displacements of the support members 20, 22, 24, 26 are recorded during the lateral displacement of the delivery area, below the conveyor by an automatic belt length adjusting unit 78.

As can further be seen, the embodiment shown in FIG. 3, the chain link conveyor 2 according to the invention comprises a raising / lowering unit (not shown) so that delivery of items transported on the carrier surface 4 of the conveyor can take place in several levels.

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LIST OF POSITION NUMBERS:

I 2. Boiler ed conveyor I

3. Equal links in chain conveyor I

5 4 Carrier bearing surface I

I 6. Drive I

S. Direction of travel I

10. Rectilinear receiving area I

I 12. Rectilinear delivery area I

10 14. Frame surfaces reach the sides of the belt I

H 16. Curve area I

18. Curve area I

I 20. Bæredel I

I 22. Bæredel I

I 15 24. Bearing part I

26. Bearing part I

28. _ Frame I

29. Straight distance between curve areas 16, 18 I

I 30. Side edge of 20 I

I 20 32. Side edge of 22 I

I 34. Side edge of 24 I

I 36. Side edge of 26 I

H 38.40. Recipient area frames I

42.44. Alleveringsrådet's frame surfaces I

25 45. Evenly shaped bearing surfaces on frame 28 I

46.48. The tangent line of the curved course of the support members I

50. 52.54, 56. Attachment points of the support members to the frame 28 I

H 58. Curve I

H 60. Curve I

30 62. Curve piece I

H 64. Curve I

66. 68, 70, 72. Rounded side edges of curves 58,60, 62.64 I

9 DK 175734 B1 i 74. Reces! 76. Gripping means on joints 3 78. Automatic band length adjustment unit i

Claims (3)

The chain link conveyor (2) according to claim 1, wherein the support members (20, 22, 24, 26) are further axially displaceably mounted to the frame (28). Chain link conveyor (2) according to claim 2, wherein at least the curved courses (30, 5 32), (34, 36) of the support parts (20, 22), (24, 26) on the away surface of the conveyor belt * de (4) facing side has a recess (74), and that the joints (3) on the side facing the support surface comprise projecting gripping means (76) for cooperating engagement with said recesses (74). A chain link conveyor according to any one of claims 1-3. where variations in the belt length due to axial displacements of the support members (20, 22), (24, 26) are collected> I are collected under the conveyor by an automatic belt length adjusting unit (78). IN A chain link conveyor according to any one of claims 1-4, wherein this comprises a raising / lowering unit at the delivery end so that delivery can take place in several levels. IN