JP2018538153A - Cutting device for cutting at least one edge of a conveyor belt - Google Patents

Abstract

The present invention relates to a cutting device (2) for cutting at least one edge (12, 13, 14) of a conveyor belt (1) comprising at least one first cutting edge (21). This cutting device (2) is configured such that the first cutting edge (21) is guided in an automated manner with respect to the edges (12, 13, 14) to be processed of the conveyor belt (1). It is characterized by that.

Description

  The present invention relates to a cutting device for cutting at least one edge of a conveyor belt according to the preceding stage of claim 1 and a conveyor belt manufacturing plant comprising such a cutting device according to claim 10.

  In the manufacture of a conveyor belt made of an elastomer material, a part of the elastomer material may be extruded from the vulcanization mold through a crack in the vulcanization mold during vulcanization at the side edge of the product. This so-called burrs are removed before the next manufacturing step, as this flared vulcanized material can usually be pinched between the edges of the vulcanizing press, resulting in product damage. Must. This burr should also be removed because it is not desirable for viewing purposes and therefore may cause discomfort to the customer.

  Conventionally, removal of burrs is usually performed manually by a person holding a cutting edge, such as a blade, sideways along the belt edge and cutting off the burrs. This process can be performed between the above two manufacturing steps inside the vulcanizing press with the conveyor belt section to be vulcanized inside the vulcanizing press. Here, the disadvantage is that, especially with relatively long conveyor belts, this manual deburring of burrs can be very difficult for personnel, and it is necessary to advance a distance of, for example, a maximum of 15 m for a single cut. I must.

  Alternatively, the belt edge on the side can be seen while the conveyor belt is pulled forward from the vulcanizing press to the hoisting stand or inside the vulcanizing press in preparation for the next conveyor belt section vulcanization process. It is also possible to assign a cutting edge to Here, the disadvantage is that in this case the product passage speed must usually be reduced in order to reduce the risk of accidents for personnel with cutting edges. This can increase manufacturing time and thus increase manufacturing costs.

  In general, the drawback is that the quality of the burr cut-off can vary as a result of personnel moving the cutting edge by hand. This can be attributed not only to the skill of the personnel, but also to a reduction in personnel attention due to increased fatigue. As a result, too few burrs may be cut off, or the belt material may be cut off too much. In addition, there is always a risk of accidents involving personnel who move the cutting edge.

  From German Patent No. 1 946 549 A1 the method of cutting the side edges of an unvulcanized rubber body to reduce the width of the rubber body to a uniform dimension before the rubber body is vulcanized And devices are known. For this purpose, the two side edges are cut off over the entire thickness, so that in addition to the dimensional accuracy of the rubber body, it is possible to obtain a smooth straight side with edges as perpendicular as possible. The trimmed edge strip is torn from the rubber body and rolled up.

German Patent No. 1 946 549 A1

  The object of the present invention is to provide a cutting device of the type mentioned at the beginning so that burrs, such as vulcanised conveyor belts, can be removed more easily, quickly and / or reliably than previously known. Is to provide. At least, an alternative to known devices should be provided.

  This object is achieved according to the invention by a cutting device with the features according to claim 1 and a conveyor belt production plant with the features according to claim 10. Advantageous developments are described in the dependent claims.

  Accordingly, the present invention relates to a cutting device for cutting at least one edge of a conveyor belt using at least one first cutting edge. Here, the edge means an angled, substantially right-angled transition between two sides of the conveyor belt, for example the side and the upper or lower side. A conveyor belt can also mean a drive belt, a running belt, or a similar endless closed loop flexible elastomeric article. Such cutting devices are known, for example, as metal blades that can be used and moved by hand, which must be moved by personnel along the edge to be machined, Alternatively, personnel can be assigned to the edge to be processed while the conveyor belt having the edge to be processed moves along the cutting edge. In this case, the above disadvantages may occur.

  For example, in order to overcome these drawbacks, the first cutting edge of the cutting device according to the invention is configured to be guided automatically with respect to the edge of the conveyor belt to be processed. Automated guidance means a mechanical configuration that can be implemented by taking over the operation of the first cutting edge rather than operating the first cutting edge by hand. As a result, it is possible to eliminate the edge cutting process by hand, and therefore, it is possible to avoid the danger of personnel injury due to the cutting process. In addition, at this time, personnel can perform other tasks. The chips produced here can fall into the collection container in the area under the first cutting edge and thereby be collected, thus eliminating the burden for personnel to collect the chips.

  Advantageously, here, during this automated cutting process, it is possible to achieve a faster passage of the conveyor belt from the vulcanization press to the hoisting stand or within the vulcanization press. Thereby, shortening of manufacturing time, and hence reduction of manufacturing cost can be achieved. Advantageously, a certain cut at the edges can achieve a constant and thus generally higher quality of the manufactured conveyor belt. In addition, this can automatically eliminate the bad appearance that can be caused by burrs.

  A metal blade can be used as the first blade edge. Alternatively, the cutting edge can be realized by methods such as laser cutting, water jet cutting, or sandblast cutting.

  According to another aspect of the present invention, the first cutting edge is configured to be disposed at a fixed position, and the edge to be processed of the conveyor belt can be cut by the first cutting edge. In addition, the conveyor belt can be guided in the moving direction so as to pass through the first cutting edge. Here, the moving direction or cutting direction extends in the longitudinal direction of the conveyor belt.

  Here, this aspect of the invention is based on the recognition that during manufacture, the conveyor belt usually has to be moved from the vulcanizer to the hoisting device anyway or within the vulcanizer. Thus, for example, in the direction of movement of the conveyor belt to be manufactured, the first cutting edge is arranged at a fixed position where the conveyor belt must pass at the rearmost part of the vulcanizing press or immediately behind the vulcanizing press. It can be very easy to cut parts in this way so that they can be automated. The positioning and / or alignment of the first cutting edge with respect to the edge of the conveyor belt to be processed in the longitudinal, lateral and / or height is fixed manually, for example by mechanical fixing means such as screw connections. Or can be adjusted by means of a drive device, in particular variably adjustable during the cutting process. Adjustment by the drive can be done under control or adjustment.

  According to the further aspect of this invention, the 1st blade edge is comprised so that rotation in the rotation direction is possible so that the edge part which should process the conveyor belt can be rotationally cut. The cutting performance of the cutting process can be enhanced by the rotating first cutting edge. In particular, the rotating first cutting edge may allow cutting of materials that are harder than the elastomeric material.

  According to a further aspect of the invention, the first cutting edge can be adjusted in the lateral direction relative to the edge of the conveyor belt to be processed. Thereby, the contact between the first blade edge and the edge to be processed can be ensured, that is, the distance can be eliminated. In addition, it is possible to adjust the degree to which cutting is performed, that is, the depth of cutting into the material of the conveyor belt. In this way, conveyor belts of various widths can be processed. This adjustment can be done manually or by a drive.

  According to a further aspect of the invention, the first cutting edge can adjust the pressing force against the edge of the conveyor belt to be processed in the lateral direction. By adjusting the force or pressure that the first cutting edge acts on the edge to be machined, the degree of cut-off can be influenced. In particular, this makes it possible to adjust the desired cutting depth of the first cutting edge into the material of the conveyor belt. Here, the adjustment of the force or pressure can be effected, for example, mechanically, for example by at least one spring, or by hydraulic or pneumatic pressure. Here, the adjustment of force or pressure by hydraulic or pneumatic pressure offers the possibility of active adjustment during the process, but this can be complex and expensive. Adjustments can be made under control or adjustment. Here, the mechanical adjustment can provide the advantage of a simpler and cheaper implementation, but in this case only a constant force or a constant pressure can be preset for the entire cut.

  According to a further aspect of the invention, the first cutting edge can be adjusted in height relative to the edge of the conveyor belt to be processed. The ability to adjust the height of the first cutting edge allows the cutting device to be adjusted for conveyor belts of various thicknesses. This adjustment can be made by a drive or manually. Adjustment by the drive can be done under control or adjustment.

  According to a further aspect of the invention, the first cutting edge is adjustable in angle about the longitudinal direction relative to the edge of the conveyor belt to be processed. Here, the longitudinal axis forms the rotation axis, and the angle can be adjusted around it. Thus, the adjustment of the cutting process of the edge part can also be performed by the cutting angle with respect to the surface forming the edge part. Preferably an adjustment of 45 ° is selected, whereby an oblique cutting process is performed, and the cut surface produced thereby has the same angle with respect to the two surfaces forming the edge. This adjustment can be made by a drive or manually.

  According to a further aspect of the invention, the cutting device further comprises at least one second cutting edge, preferably further comprising at least one third cutting edge, wherein the third cutting edge is the first cutting edge and the first cutting edge. The first and second cutting edges, and preferably the third cutting edge, are arranged to work on different edges or the same edge of the conveyor belt. Using multiple identical cutting edges may have the advantage that costs can be reduced. Using multiple different cutting edges can have the advantage that it can increase the likelihood that it can affect the cutting process.

  The plurality of cutting edges can process, for example, the upper edge portion of the conveyor belt formed by the upper side (conveying side) and the side surface of the conveyor belt with the first cutting edge, and the lower side (traveling side) and side surface of the conveyor belt. Can be used so that the lower edge of the conveyor belt formed by can be processed by the second cutting edge. When a third cutting edge is used, this cutting edge can, for example, machine the side surface itself.

  According to a further aspect of the invention, at least the first cutting edge is a metal blade, preferably all the cutting edges are metal blades. Metal blades are usually suitable and sufficient to allow cutting of soft materials such as elastomeric materials. A metal blade can be simple, sturdy and inexpensive.

  The present invention is also a conveyor belt manufacturing plant comprising a conveyor belt to be manufactured that can be moved in a moving direction inside the conveyor belt manufacturing plant, and a cutting device as described above, wherein the cutting device is a manufacturing plant. The conveyor belt manufacturing plant arranged to cut at least one edge of the conveyor belt. In this way, the characteristics and advantages described above can be applied to conveyor belt manufacture.

  In conjunction with the following figures, exemplary embodiments and further advantages of the invention are described below.

It is a perspective schematic diagram of a conveyor belt manufacturing plant provided with a cutting device by the present invention.

  A conveyor belt manufacturing plant 3 such as a vulcanizing press 3 includes a conveyor belt 1 that is manufactured or processed inside the vulcanizing press 3. The conveyor belt 1 essentially extends in the longitudinal direction X (also referred to as length X). At right angles to the longitudinal direction X, on the one hand, a lateral direction Y (which can also be referred to as width Y) extends, and on the other hand, a vertical direction Z (which can also be referred to as height Z) extends. Although a section of the conveyor belt 1 is shown in FIG. 1, the conveyor belt 1 extends in the longitudinal direction X clearly longer than shown.

  At height Z, the conveyor belt 1 has an upper side 10, which is the transport side 10 of the conveyor belt 1. The conveyor belt 1 has a lower side 11 on the opposite side of the height Z to the upper side 10, which can also be called the running side 11 of the conveyor belt 1. In the lateral direction Y, one side surface 12 is formed on each side, and the side surface 12 forms an upper right side 10 or a lower side 11 each defining a boundary, and one right-angled transition 13, 14. These perpendicular transitions 13, 14 between the side surface 12 and the upper side 10 or the lower side 11 are referred to as the upper edge 13 or the lower edge 14.

  The conveyor belt 1 is vulcanized in a production step with a vulcanizing press 3 (not shown in detail) and is then guided or pulled in a moving direction A extending in the longitudinal direction X for further processing, Thereby, the next zone of the conveyor belt 1 can be vulcanized. The cutting device 2 according to the invention is arranged at the last part of the vulcanizing press in the movement direction A.

  The cutting device 2 has a first cutting edge 21 in the form of a metal blade 21. The first cutting edge 21 can adjust the lateral position B by the lateral guide element 22 in the lateral direction Y, and the first cutting edge 21 cuts the upper edge 13 of the opposing conveyor belt 1. The burrs from the previous vulcanization step can be removed from the upper edge 13. The adjustment of the lateral position B can be performed by a mechanical tightening mechanism, for example by screw connection. Here, the cut burr can be received by a container such as a container (not shown) in a region below the first cutting edge 21.

  The cutting device 2 further includes a guide element 23 for positioning the first cutting edge 21 at the position C with respect to the upper edge portion 13 of the conveyor belt 1 at the height Z. This position C can also be performed by a mechanical clamping mechanism, for example by screw coupling. Furthermore, the first cutting edge 21 can be adjusted relative to the side guide element 22 around the longitudinal axis X as a rotation axis, with an angle α with respect to the opposite side surface 12 or the upper side 10, thereby producing The cut surfaces to be made preferably have the same angle with respect to the side surface 12 and the top surface 10. Further, the first cutting edge 21 can be rotated in the rotation direction D around the axis of the side guide element 22, and the conveyor belt 1 to be processed is moved inside the vulcanizing press 3 or the vulcanizing press 3. The rotary cutting movement can be performed at a fixed position that must be passed when moving out of the box.

  The cutting device 2 further has a second cutting edge 24 and a third cutting edge 27, which are sequentially arranged behind the first cutting edge 21 in the moving direction A of the conveyor belt 1. The configuration is the same as that of one blade edge 21. Correspondingly, the second cutting edge 24 comprises a side guide element 25 and a guide element 26 at a height Z. The second cutting edge 24 is rotatable in the rotational direction E around the side guide element 25. The second cutting edge 24 can adjust the angle β with respect to the opposite side surface 12 around the longitudinal axis X as a rotation axis, and the second cutting edge 24 can process the side surface 12 flatly. it can.

  Correspondingly, the third cutting edge 27 comprises a side guide element 28 and a guide element 29 at a height Z. The third cutting edge 27 is rotatable in the rotation direction F around the side guide element 28. The third cutting edge 27 can adjust the angle γ with respect to the opposing side surface 12 or the lower side 11 around the longitudinal axis X as a rotation axis, and the third cutting edge 27 can be adjusted to the lower edge portion 13 that faces the third cutting edge 27. Can be processed.

  When two cutting devices 2 (not shown) according to the invention are arranged in the vulcanizing press 3 on both sides of the conveyor belt 1 in the transverse direction Y, according to the invention, the conveyor belt 1 is automated. A cutting process can be performed at its two upper edges 13, two side faces 12 and two lower edges 14. Thereby, it is possible to eliminate the burden on personnel related to this work, to improve the quality of the cutting process, to eliminate the appearance of burrs, and to shorten the manufacturing time.

A Direction of movement of conveyor belt B Side position C Position at height Z D Rotation direction of first cutting edge 21 E Rotation direction of second cutting edge 24 F Rotation direction of third cutting edge 27 α First cutting edge 21 angle β angle of second cutting edge 24 γ angle of third cutting edge 27 X longitudinal direction, length Y lateral direction, width Z vertical direction, height 1 conveyor belt 10 upper side, propagation side 11 lower side, traveling side 12 Side 13 Upper edge, conveyor belt upper edge, right angle upper transition part 14 Lower edge, conveyor belt lower edge, right angle lower transition part 2 Cutting device 21 First blade edge, first blade 22 First Side guide element 23 of the first cutting edge 21 23 Guide element at the height Z of the first cutting edge 21 24 Second cutting edge, second cutting edge 25 Side guiding element of the second cutting edge 24 26 Second cutting edge 24 Guide element at height Z of the third 27 Third blade tip, third blade 28 Third blade 27 lateral guide element 29 a third guiding element 3 conveyor belts production plant in height Z of the cutting edge 27 of vulcanization press

Claims (10)

A cutting device (2) for cutting at least one edge (12, 13, 14) of the conveyor belt (1),
Comprising at least one first cutting edge (21),
The first cutting edge (21) is configured to be automated and guided with respect to the edges (12, 13, 14) to be processed of the conveyor belt (1). Cutting device (2). The first cutting edge (21) is configured to be disposed at a fixed position;
The conveyor belt (1) is moved to the first edge so that the edge (12, 13, 14) to be processed of the conveyor belt (1) can be cut by the first cutting edge (21). The cutting device (2) according to claim 1, wherein the cutting device (2) can be guided in the moving direction (A) so as to pass through the blade edge (21). The first cutting edge (21) is rotatable in the rotational direction (D) so that the edges (12, 13, 14) to be processed of the conveyor belt (1) can be rotationally cut. The cutting device (2) according to claim 1 or 2, wherein the cutting device (2) is constructed. The position (B) of the first cutting edge (21) can be adjusted with respect to the edges (12, 13, 14) of the conveyor belt (1) in the lateral direction (Y). The cutting device (2) according to any one of Items 1 to 3. 2. The pressing force of the first cutting edge (21) can be adjusted with respect to the edges (12, 13, 14) of the conveyor belt (1) in the lateral direction (Y). The cutting apparatus (2) as described in any one of -4. The first cutting edge (21) is height (Z) and can be adjusted in position (C) with respect to the edge (12, 13, 14) to be processed of the conveyor belt (1). The cutting device (2) according to any one of Items 1 to 5. The first cutting edge (21) can adjust the angle (α) around the longitudinal direction (X) with respect to the edge (12, 13, 14) to be processed of the conveyor belt (1). The cutting device (2) according to any one of claims 1 to 6. further,
At least one second cutting edge (24), preferably further comprising at least one third cutting edge (27), the third cutting edge (27) being identical to the first cutting edge (21) Configured or different configuration,
The first cutting edge (21) and the second cutting edge (24), and preferably the third cutting edge (27) are different edges (12, 13, 14) or the same of the conveyor belt (1). Cutting device (2) according to any one of the preceding claims, arranged to machine the edges (12, 13, 14). The at least first blade edge (21) is a metal blade (21), preferably all the blade edges (21, 24, 27) are metal blades (21, 24, 27). The cutting device (2) according to any one of claims 8 to 9. A conveyor belt (1) to be manufactured that can be moved in the direction of movement (A) inside the conveyor belt manufacturing plant (3);
It is a conveyor belt manufacturing plant (3) provided with the cutting device (2) as described in any one of Claims 1-9, Comprising: The said cutting device (2) is the inside of the said manufacturing plant (3), A conveyor belt manufacturing plant (3) arranged to cut at least one edge (12, 13, 14) of the conveyor belt (1).

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