CA2171799A1 - Method for cutting belts that incorporate reinforcing inserts, and a cutter for belts of such a kind - Google Patents
Method for cutting belts that incorporate reinforcing inserts, and a cutter for belts of such a kindInfo
- Publication number
- CA2171799A1 CA2171799A1 CA002171799A CA2171799A CA2171799A1 CA 2171799 A1 CA2171799 A1 CA 2171799A1 CA 002171799 A CA002171799 A CA 002171799A CA 2171799 A CA2171799 A CA 2171799A CA 2171799 A1 CA2171799 A1 CA 2171799A1
- Authority
- CA
- Canada
- Prior art keywords
- cutter
- belt
- cutting
- carriage
- clamping jaws
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/045—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/084—Means for treating work or cutting member to facilitate cutting specially adapted for cutting articles composed of at least two different materials, e.g. using cutters of different shapes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetal Cutting Devices (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Tyre Moulding (AREA)
- Details Of Cutting Devices (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
In a method for cutting belts that incorporate reinforcing inserts, in particular, conveyor belts that are of an armored elastomer, the belt (41) is first arranged between two clamping jaws (10, 13) before the clamping jaws (10, 13) are pressed against in order that the cut can be made; at the same time, a cutter (17) is guided along the clamping jaws (10, 13) and transversely to the longitudinal direction of the belt and through the material from which the belt is made, by means of a drive system.
In order to be able to cut all kinds of belts that incorporate reinforcing inserts, including those that have steel armouring, and in order to be able to do this quickly and in a manner that ensures the long service life of the cutting tool that is used, during the cut cutting process, the material from which the belt is made is cut on both sides by cutting edges (36, 37) of the cutter (17). The cutting edges (36, 37) subtend an acute angle and each cutting edge is either straight or curved convexly towards the belt (41). In this method, the cutter (17) centers itself automatically relative to the reinforcing inserts that are embedded in the belt (41).
Also proposed is a cutter for the armored bulkheads referred to.
In order to be able to cut all kinds of belts that incorporate reinforcing inserts, including those that have steel armouring, and in order to be able to do this quickly and in a manner that ensures the long service life of the cutting tool that is used, during the cut cutting process, the material from which the belt is made is cut on both sides by cutting edges (36, 37) of the cutter (17). The cutting edges (36, 37) subtend an acute angle and each cutting edge is either straight or curved convexly towards the belt (41). In this method, the cutter (17) centers itself automatically relative to the reinforcing inserts that are embedded in the belt (41).
Also proposed is a cutter for the armored bulkheads referred to.
Description
21 71 7~9 A Method for Cutting Belts that Incorporate Reinforcing Inserts, and a Cutter for Belts of such a Kind The present invention relates to a method for cutting belts that incorporate reinforcing inserts, in particular for cutting conveyor belts that are of an armoured elastomer, in which the belt is arranged between two clamping jaws; in order to make the cut, the clamping jaws, with the belt arranged between them, are pressed against each other and at the same time a cutter is guided along the clamping jaws, transversely to the longitudinal direction of the belt, and through the belt material, this being done by means of a drive system.
The present invention also relates to a cutter for belts that incorporate reinforcing inserts, in particular for conveyor belts that are of an armored elastomer, with a clamping system consisting of two clamping jaws that are transverse to the belt and can be clamped against each other with the belt interposed between them, and with a cutter having at least one cutting edge, which can be moved along the clamping system by means of a drive system.
A method and a cutter system of the type described in the introduction hereto are described in French Utility Model Certificate 2458497. An elastic belt, which can be a fabric with rubber-coated threads, is separated into individual strips by a plurality of transverse cuts; these strips are subsequently used to manufacture the carcass of a tire. The belt that is used as raw material is clamped between two clamping jaws that can be pressed against each other and a cutter that can move horizontally is guided through the material of the belt. When this is done, the material from which the belt is made lies on a 2~717~,q conveyor belt that is of rubber. In order to avoid the conveyor belt being cut to pieces by the cutter, on the lower edge of the cutter, which is fitted with two sickle-shaped blades, there is rounded, wider section, like a bead. During the cutting process, the bead presses the elastic conveyor belt downward, part way into a wide groove in the lower clamping jaw, so that no damage is done to said conveyor belt during the cutting process. The cutter is secured to a carriage that can be moved precisely along the upper clamping jaw. The depth of the cut made by the cutter is so adjusted that the edge of the belt that is to be cut slides along the upper side of the belt, and thus in the transition area between the bead and the sickle-shaped cutter blade, during the cutting process.
The known cutter system can be used to cut up fabric, and in particular rubber coated fabrics. In contrast to this, it has been shown to be unsuitable for cutting up heavy-duty conveyor belts, in particular conveyor belts that are armored with steel wires, of the kind used, for example, for moving coal and rock in open-cast and underground mining operations.
Today, conveyor belts that are reinforced by steel cables or wire mesh are mostly cut up by hand, since no machines or machine processes suitable for this purpose are available. As a rule, in order to do this, the elastomer that encloses the armouring is first cut open from both sides in the form of a wedge that is as deep as possible. Next, a commercially available, hand-held cutting wheel is used to cut through each individual steel wire.
This work, which requires at least three persons to perform, is extremely laborious, very noisy, and generates large quantities of dust. When this work is being done with a cutter wheel, it is impossible to avoid the rubber material being cut by the cutting wheel, which means that this work is also associated with the 2~717~9 generation of vapors and an unpleasant odor. A cut that is made in this way through a steel-armored conveyor belt that is two meters wide takes between half an hour and one hour to complete.
This amount of time is acceptable if all that is required is a single cut through the belt, in order to make repairs, for example. However, it is quite unacceptable if a conveyor belt that is completely unserviceable is to be cut into short sections, ready for disposal, as will be the case in the future in view of increasingly strict environmental legislation.
It is the task of the present invention to create a cutting method by which all kinds of belts that incorporate reinforcing inserts, and in particular belts that incorporate steel armouring, can be cut up quickly, and which ensures a long service life for the cutting tools that are used. In addition, it is intended to create a cutting system that is suitable for this purpose.
In order to solve this problem, with respect to the method, it is proposed that during the cutting process the material from which the belt is made be cut on both sides by cutting edges of the cutter, said cutting edges subtending an acute angle and being straight or curved convexly to the belt. It is preferred that the cutter be guided through the material of the belt with considerable vertical free play when the cutter will center itself automatically relative to the reinforcing inserts embedded in the belt.
Also proposed for the solution of this problem is a cutter system of the type described in the introduction hereto, in which the cutting edge is straight or curved convexly towards the belt, an additional cutting edge being arranged at an acute angle to the ~1 71 7~9 first cutting edge, and that the belt be located between these two cutting edges during the cutting process.
Because of the essentially V-shaped arrangement of the two cutting edges, which work in conjunction with each other, it is possible to cut through belts, even those that incorporate steel armouring, unusually quickly and in a manner that ensures that the cutter blades have a long service life. A rubber belt that incorporates steel-cable armouring and that is two meters wide can be cut through in less than two minutes, and this is done without the creation of a great deal of dust and with very little noise. Only one supervising operator is required when this process is carried out.
In a preferred embodiment of the present invention, the two cutting edges of the cutter system are located on the cutter.
These two cutting edges can be arranged symmetrically to each other when together they form the approximately V-shaped cutting notch; such a configuration of the cut leads to the fact that the cutter centers itself automatically relative to the reinforcing inserts that are incorporated in the belt. The maximum cutting force is concentrated precisely where the greatest resistance of the material is to be overcome, which is to say in the area of the armouring through which the cut is to be made.
In order to allow the cutter to center itself relative to the armouring, the cutter can have considerable clearance in the direction that is perpendicular to the flat side of the belt; in contrast to this, the cutter should be held so as to be essentially rigid in the longitudinal direction of the belt.
The present invention also proposes that the cutter be arranged on a carriage that can move back and forth along the clamping ~ 1 71 799 system. In order to permit the cutter to have the desired free play, cutter can be secured rigidly to the carriage, in which case the carriage is guided with considerable clearance on one of the two clamping jaws of the clamping system.
It has also been shown to be advantageous if the tractive forces that move the carriage act as closely as possible to the cutters.
To this end, one embodiment of the present invention proposes that the carriage be provided with supporting rollers on its long side that is remote from the cutter; these rollers can run on guide surfaces of the clamping jaw that accommodates the carriage; it is also proposed that means of traction be provided to move the carriage, these being secured on the carriage, level with that half of the carriage that is proximate to the cutter.
In order to prevent the cutter from migrating to one side or the other, the clamping jaw can be provided with an elongated slot through which the cutter is guided. In this case, lateral guidance of the cutter can be effected either wholly or in part by the elongated slot.
For practical use of the cutter system in conveyor systems, it has been shown to be advantageous if the clamping jaws can be pivoted toward each other by means of a hinge joint, and the cutter system, including the clamping jaws, be completely opened at the end that is remote from the hinge joint, so that the belt can be slid between the open clamping jaws from the side. In this way, it is possible to make cuts in situ without disassembling the whole cutting system, e.g., to make such cuts on conveyor belts within a belt assembly when they require repair. In order to make it simpler to move the cutter system, it can be fitted with lifting eyebolts on its upper side, so that the cutter 2~717~9 system as a whole can be lifted by a gantry-type crane or other apparatus and moved to the desired place, or can be pivoted into a belt assembly.
Additional features and advantages of the present invention will be described in greater detail below, on the basis of the drawings appended hereto. These drawings show the following:
igure 1: a diagramatic front view of a cutters system to cut through an elastomer that is armored with steel cables;
Figure 2: a plan view of the system shown in Figure 1:
Figure 3: a perspective view of the system shown in Figure 1 and Figure 2, with one section shown cut away for greater clarity;
igure 4: a detail of a cross section on the line IV-IV in Figure l;
igure 5: a detail from Figure 3 at even larger scale;
igure 6: a cross section on the line VI-VI in Figure 4, showing a carriage with an attached cutter;
igure 7: a view as in Figure 5 showing a second embodiment of the cutter system;
igure 8: a view as in Figure 6 showing a second embodiment of the cutter system;
igure 9: a view as in Figure 3 showing any third embodiment of the cutter system;
21 71 ~99 Figure 10: a detail of the cutter system shown in Figure 9;
igure 11: a cross section at greater in the area of the cutter, through a cutter system;
igure 12: a cross-section on the line XII-XII in Figure 11.
Figures 1 to 4 show that the apparatus that is used to carry out the cutting process comprises a fixed sub-structure 1, at the outer ends of which there are two supports 2. Two horizontal U-sections 8 are arranged opposite each other and, as can be seen from Figure 4, these form an upper inner clamping jaw 10 that incorporates a hollow spacei these two sections of the clamping jaw 10 are connected rigidly to each other by means of the U-clamp piece 9. A movable frame 1' is so arranged that it can slide vertically on the sub-structure 1. The movable frame contains a pair of horizontal U-sections 3 that are arranged opposite each other and in this way form a lower channel-like clamping jaw 13. Two pairs of vertical side beams are arranged close to the ends of this lower clamping jaw 13, and these are connected at their ends by means of a cross tie 5. In addition, there are two horizontal longitudinal beams 6 between which are installed a plurality of parallel rollers 7 so as to form a horizontal supporting surface for the belt that is to be cut up.
At their opposite ends, the two vertical side beams are connected in pairs by means of cross pieces 4'. Each cross piece 4' is supported by a double-acting cylinder 12, the shaft of which is connected to the U-clamp 9 that is installed on the upper clamping jaw 10 and is located between the side beams 4. The cylinders 12 are either hydraulic or pneumatic cylinders. They can work synchronously in order to raise or lower the lower movable clamping jaw 13 in such a way that this remains parallel to the fixed upper clamping jaw 10. There are off-set guide 2~ 7I 79~
elements arranged between the fixed section 8 and the vertically movable side beams 4. These elements can incorporate guides, although these are not shown in the drawing.
The upper flanges 14 of the sections 3 form the clamping surfaces of the lower clamping jaw 13 and are located at about the same level as the surface of the rollers 7. As can be seen in Figure 5, the flanges 14 are separated by a slot 16 through which a cutter 17 can move. The lower flanges 18 of the section 8 form the clamping surface of the upper clamping jaw 10 and are similarly separated by a slot 19 that permits passage of the cutter 17.
In the drawing, the flanges 14 and 18 that are opposite each other, together with the clamping surfaces that are formed by them, are shown as being flat. However, they can also incorporate raised portions or additional shapes in the form of ridges, pyramids, and the like in order to hold the belt that is to be cut up more securely, particularly if this belt is of an extremely elastic material and displays a recognizable wear pattern.
The two sections 8 that form the upper, fixed clamping jaw 10 contain the cutting means that consist of a carriage with the cutter 17, as well as a chain-drive system 21 that runs over two sprockets 22, 23 that are mounted on the ends of the sections 8.
The sprocket 22 is driven by an electric geared motor 24. The other sprocket 23 is installed on a chain-tensioning system that has an opening 26 in the vicinity of each section 8; these openings simplify installation and removal of the cutter 17 on or from the carriage 20. A removable housing 27 that is arranged above the lower clamping jaw 13 protects the blade in this area.
2~71~
Another housing 28 protects the drive system for the chain that is used to move the carriage 20.
Figures 5 and 6 show the carriage 20 that consists essentially of two side plates 20, between which the cutter 17 is located. The ends of the chain are secured at the ends of the two plates 30.
The carriage is guided in the interior of the section 8 by means of ball bearings 33 that serve as rollers. The outside diameter of each ball bearing is smaller than the clearance within the interior of the section 8 in order to allow free play 34 for the carriage 20 and the cutter 17, and permit the cutter 17 to center itself on the belt that is to be cut up, as will be described below. The plates 30 and the cutter 17 are connected to each other by horizontal bolts that pass through bores.
Figure 6 shows that each end of the cutter 17 incorporates a cutting notch that is approximately V-shaped in longitudinal profile and comprises two parts 36 and 37 that are directly opposite each other, with each being symmetrical to the other relative to the horizontal center line 30. Each V-shaped cutting notch ends in a center concave section 39. The cutter 17 is preferably of high-speed steel that is cut out by means of a laser. The treatment of the cutting notch and the cutting angle will depend on the product that is to be cut up. In general, it is not made extremely sharp, so that the cutter notch remains less sensitive. Such a design makes it possible to manufacture a relatively thin cutter 17 that can cut rubber and even metal armouring and other material that may be embedded in the rubber.
The symmetrical arrangement of the two parts 36 and 37 of the cutter makes it possible for the cutter 17 to be self-centering relative to the element that is to be cut up and which is held between the two clamping jaws 10, 13. In the present case, it is the vertical free play of the carriage within the upper clamping jaw 10 that permits this self-centering.
This free play can also be obtained if the cutter 17 is installed so as to be able to move on the carriage 20. During the cutting process, the cutter 17 is moved transversely to the belt and through the slots 16 and 19 that are located between the two upper and lower clamping jaws 10, 13.
The fact that the cutter 17 has two pairs of cutter parts 36, 37 makes it possible to make alternating cuts, first in one and then in the other direction. But even in those cases in which an alternating cut is not intended, this type of cutter can be of interest because once one cutter notch has become blunt, the working direction can be reversed and a change-over be made so that the other cutting notch is used.
As compared to Figures 1 to 6, Figures 7 and 8 show a variation of the cutter by that makes it possible to cut particularly thick belts that are reinforced by very thick steel cables. The cutter 50 is the essential element of a carriage 51, and the upper clamping jaw 10 contains an axle 52 with two journal bearings 53 that have ball bearings. Within the lower clamping jaw 13 there is an axle 54 with two journal bearings 55 that have ball bearings. The cutter 50 has a straight cutting edge 50' that extends obliquely in the direction in which the cut is made. It is preferred that this be manufactured from high-speed steel. The flange 14 of the lower clamping jaw 13 can be provided with fixed blades 56 that are similarly manufactured from high-speed steel.
The blade 56 consists of two cutting edges 56' on both sides of the slot 16 of the lower clamping jaw 13. As soon as the cutter 50 encounters resistance during the cutting process, it is held in a position in which the journal bearings 53 of the carriage 51 21 71 ~99 press against the upper flange of the section 8, when the slide bearings 55 are pressed against the back of the flange 14 of section 3. In this position, the cutter notch 50' exerts a force on the belt that is to be cut and part of this is directed onto the lower clamping jaw 13 and attempts to squeeze the inner cable of the belt that is to be cut between the cutting edge 50' of the cutter 50 and the cutting edges 56' of the blades 56. In one variation it is also possible that the cutter 50 incorporate a notch of such a kind that a cutter notch that is V-shaped as in the previously described embodiment will result.
The method is very simple to carry out, and it can be automated without any difficulty. The appropriate operating systems are installed in the control box 40 which, amongst other items, contains the electrical control unit and the power supply for the geared motor, as well as the electro-hydraulic or electro-pneumatic units for actuating the cylinder 12.
Figure 3 shows the belt 41 that is to be cuti this is a rubber conveyor belt that is reinforced, for example, by wires or metal cables 42 that must be cut transversely, along a cut line 43. The belt 41 that is placed upon the rollers 7 can be pushed between the clamping jaws 10 and 13 manually by an operator before the cutting process begins. In this way, it is possible to cut up an old, worn out conveyor belt into small pieces that are easy to handle, and to do so very quickly.
Once the belt 41 has been correctly positioned between the clamping jaws 10, 13, with the desired cut line in the proper position, these clamping jaws 10, 13 are pressed against each other by actuating the cylinder 12. Then, the blade 17 that is initially located at one end of the clamping jaws 10, 13 starts to move, driven by the drive system. Because of the fact that the 2~7~799 two cutting edges of the cutter are arranged at an acute angle relative to each other, during the cutting process the belt 41 is located between these two cutting edges, i.e., the blade 17 centers itself automatically relative to the belt 41. The belt material is cut from both sides by the cutting edges so that a symmetrical and particularly powerful cutting action results, and this cuts through the metal armouring without any problem.
Figures 9 to 12 show another embodiment of the cutter system. The ends of the clamping jaws 10, 13 are connected at one end through a hinge joint 60. In order to make it possible to push the belt 41 between the opened clamping jaws 10, 13 from the other side, the cutter system, including the clamping jaws 10, 13, can be opened completely at the end 61 that is remote from the hinge joint 60. To this end, as can be seen in Figure 10, the piston rod 62 of the cylinder 12 can be released from the lower clamping jaw 13 after removal of a safety pin 63 from the lower clamping jaw 13. Then the lower clamping jaw 13 can be dropped away from the upper clamping jaw 10 by pivoting it about the hinge joint 60, and the belt 41 can be inserted or removed at the side. This is a particular advantage in the case of repairs to endless conveyor belts that cannot be inserted into the cutter system from the end. A stop 64 that can be swung into position between the two clamping jaws 10, 13 is located at the same end of the clamping system as the hinge type 60, and this limits the maximum angle to which the clamping jaws 10, 13 can be opened.
Lifting eyebolts 65 in the top of the cutter system make it possible to lift this to the desired workplace by means of a crane, and optionally make cuts when it is in the raised position. Guides for the forks of a fork-lift truck or other load-handling equipment can be used for this purpose in place of the lifting eyebolts 65.
2~ 71 79~
In the embodiment of the clamping jaws 10, 13, of the carriage 20, and of the cutter 17 that is shown in Figure 11 and Figure 12, each of the two clamping jaws 10, 13 consists of two parallel beams in the form of a double-T. The upper pair of beams form the upper clamping jaw 10, the lower pair of beams form the lower clamping jaw 13; the space between the beams is so narrow because of suitable distance pieces that the elongated slots 16, 19 that are just wide enough for passage of the cutter 17. In this way, the cutter 17 is guided mainly by the edges of these elongated slots 16, 19. The guide slot that is formed in this way is so narrow that the cutter 17 is held so as to be essentially rigid in the longitudinal direction of the belt.
In contrast to the foregoing, the cutter 17 has an obvious amount of free play 34 in the direction perpendicular to the flat sides 66 of the belt 41. This free play 34 is made up of an upper space 34' and a lower space 34", as is shown in Figure 12. The upper space 34' is located between support rollers 67 in the area of the upper longitudinal side of the carriage 20 and the guide surfaces 68 of the clamping jaw 10 that accommodates the carriage. The lower space 34" is located between the under side 69 of the carriage 20 and the flange 18 of the clamping jaw 10 that is located there. The drive system 21 in the form of the chain is secured by a pin 69' close to the under side of the carriage 20 in order that the force be applied close to the carriage 17.
Because of this free play for the carriage 20, the cutter 17 that is connected rigidly to the carriage 20 centers itself automatically in the vertical direction with reference to the belt 41 or the wires and metal cables 42 that are embedded therein. During the cutting process, these wires move precisely into the concave ground section 39, where the two symmetrically 2~71~9~
ground cutting edges 70, 71 of the cutter converge. The space between the cutting edges 70, 71 is smaller here than the diameter of the metal wires 42 that are to be cut through. In the embodiment shown in Figure 12, the cutting edges 70, 71 that are in a V-shaped configuration and subtend an acute angle are straight. However, it is also possible to give the cutting edges 70, 71 a slightly convex shape in the direction of the belt 41, e.g., to impart a parabolic shape to them. In this case, the cutting edges 70, 71 form an ever more acute angle in the direction toward the end of the cutting notch, in the section 39.
The average angle between the cutting edges 70, 71 should be at least 10 degrees and at most 45 degrees in this case.
In place of grinding the cutter 17 itself, it is also possible to configure the cutter as a cutter body in which suitable cutter inserts are then installed, e.g., cutter inserts that are of tungsten, (Widia steel) or ceramic. In this case, it is not necessary to disassemble the cutter or the carriage when the cutter becomes blunt. All that need be done is to replace the cutter inserts.
In order to ensure that equal pressure is exerted by the clamping ]aws 10, 13 across their whole length it is possible to provide suitable line of flexure compensation, e.g., by a precisely determine convex pre-curvature of the two clamping jaws 10, 13 toward each other.
~ 71~9 INDEX TO REFERENCE NUMBERS
REFERENCE
1' FRAME
The present invention also relates to a cutter for belts that incorporate reinforcing inserts, in particular for conveyor belts that are of an armored elastomer, with a clamping system consisting of two clamping jaws that are transverse to the belt and can be clamped against each other with the belt interposed between them, and with a cutter having at least one cutting edge, which can be moved along the clamping system by means of a drive system.
A method and a cutter system of the type described in the introduction hereto are described in French Utility Model Certificate 2458497. An elastic belt, which can be a fabric with rubber-coated threads, is separated into individual strips by a plurality of transverse cuts; these strips are subsequently used to manufacture the carcass of a tire. The belt that is used as raw material is clamped between two clamping jaws that can be pressed against each other and a cutter that can move horizontally is guided through the material of the belt. When this is done, the material from which the belt is made lies on a 2~717~,q conveyor belt that is of rubber. In order to avoid the conveyor belt being cut to pieces by the cutter, on the lower edge of the cutter, which is fitted with two sickle-shaped blades, there is rounded, wider section, like a bead. During the cutting process, the bead presses the elastic conveyor belt downward, part way into a wide groove in the lower clamping jaw, so that no damage is done to said conveyor belt during the cutting process. The cutter is secured to a carriage that can be moved precisely along the upper clamping jaw. The depth of the cut made by the cutter is so adjusted that the edge of the belt that is to be cut slides along the upper side of the belt, and thus in the transition area between the bead and the sickle-shaped cutter blade, during the cutting process.
The known cutter system can be used to cut up fabric, and in particular rubber coated fabrics. In contrast to this, it has been shown to be unsuitable for cutting up heavy-duty conveyor belts, in particular conveyor belts that are armored with steel wires, of the kind used, for example, for moving coal and rock in open-cast and underground mining operations.
Today, conveyor belts that are reinforced by steel cables or wire mesh are mostly cut up by hand, since no machines or machine processes suitable for this purpose are available. As a rule, in order to do this, the elastomer that encloses the armouring is first cut open from both sides in the form of a wedge that is as deep as possible. Next, a commercially available, hand-held cutting wheel is used to cut through each individual steel wire.
This work, which requires at least three persons to perform, is extremely laborious, very noisy, and generates large quantities of dust. When this work is being done with a cutter wheel, it is impossible to avoid the rubber material being cut by the cutting wheel, which means that this work is also associated with the 2~717~9 generation of vapors and an unpleasant odor. A cut that is made in this way through a steel-armored conveyor belt that is two meters wide takes between half an hour and one hour to complete.
This amount of time is acceptable if all that is required is a single cut through the belt, in order to make repairs, for example. However, it is quite unacceptable if a conveyor belt that is completely unserviceable is to be cut into short sections, ready for disposal, as will be the case in the future in view of increasingly strict environmental legislation.
It is the task of the present invention to create a cutting method by which all kinds of belts that incorporate reinforcing inserts, and in particular belts that incorporate steel armouring, can be cut up quickly, and which ensures a long service life for the cutting tools that are used. In addition, it is intended to create a cutting system that is suitable for this purpose.
In order to solve this problem, with respect to the method, it is proposed that during the cutting process the material from which the belt is made be cut on both sides by cutting edges of the cutter, said cutting edges subtending an acute angle and being straight or curved convexly to the belt. It is preferred that the cutter be guided through the material of the belt with considerable vertical free play when the cutter will center itself automatically relative to the reinforcing inserts embedded in the belt.
Also proposed for the solution of this problem is a cutter system of the type described in the introduction hereto, in which the cutting edge is straight or curved convexly towards the belt, an additional cutting edge being arranged at an acute angle to the ~1 71 7~9 first cutting edge, and that the belt be located between these two cutting edges during the cutting process.
Because of the essentially V-shaped arrangement of the two cutting edges, which work in conjunction with each other, it is possible to cut through belts, even those that incorporate steel armouring, unusually quickly and in a manner that ensures that the cutter blades have a long service life. A rubber belt that incorporates steel-cable armouring and that is two meters wide can be cut through in less than two minutes, and this is done without the creation of a great deal of dust and with very little noise. Only one supervising operator is required when this process is carried out.
In a preferred embodiment of the present invention, the two cutting edges of the cutter system are located on the cutter.
These two cutting edges can be arranged symmetrically to each other when together they form the approximately V-shaped cutting notch; such a configuration of the cut leads to the fact that the cutter centers itself automatically relative to the reinforcing inserts that are incorporated in the belt. The maximum cutting force is concentrated precisely where the greatest resistance of the material is to be overcome, which is to say in the area of the armouring through which the cut is to be made.
In order to allow the cutter to center itself relative to the armouring, the cutter can have considerable clearance in the direction that is perpendicular to the flat side of the belt; in contrast to this, the cutter should be held so as to be essentially rigid in the longitudinal direction of the belt.
The present invention also proposes that the cutter be arranged on a carriage that can move back and forth along the clamping ~ 1 71 799 system. In order to permit the cutter to have the desired free play, cutter can be secured rigidly to the carriage, in which case the carriage is guided with considerable clearance on one of the two clamping jaws of the clamping system.
It has also been shown to be advantageous if the tractive forces that move the carriage act as closely as possible to the cutters.
To this end, one embodiment of the present invention proposes that the carriage be provided with supporting rollers on its long side that is remote from the cutter; these rollers can run on guide surfaces of the clamping jaw that accommodates the carriage; it is also proposed that means of traction be provided to move the carriage, these being secured on the carriage, level with that half of the carriage that is proximate to the cutter.
In order to prevent the cutter from migrating to one side or the other, the clamping jaw can be provided with an elongated slot through which the cutter is guided. In this case, lateral guidance of the cutter can be effected either wholly or in part by the elongated slot.
For practical use of the cutter system in conveyor systems, it has been shown to be advantageous if the clamping jaws can be pivoted toward each other by means of a hinge joint, and the cutter system, including the clamping jaws, be completely opened at the end that is remote from the hinge joint, so that the belt can be slid between the open clamping jaws from the side. In this way, it is possible to make cuts in situ without disassembling the whole cutting system, e.g., to make such cuts on conveyor belts within a belt assembly when they require repair. In order to make it simpler to move the cutter system, it can be fitted with lifting eyebolts on its upper side, so that the cutter 2~717~9 system as a whole can be lifted by a gantry-type crane or other apparatus and moved to the desired place, or can be pivoted into a belt assembly.
Additional features and advantages of the present invention will be described in greater detail below, on the basis of the drawings appended hereto. These drawings show the following:
igure 1: a diagramatic front view of a cutters system to cut through an elastomer that is armored with steel cables;
Figure 2: a plan view of the system shown in Figure 1:
Figure 3: a perspective view of the system shown in Figure 1 and Figure 2, with one section shown cut away for greater clarity;
igure 4: a detail of a cross section on the line IV-IV in Figure l;
igure 5: a detail from Figure 3 at even larger scale;
igure 6: a cross section on the line VI-VI in Figure 4, showing a carriage with an attached cutter;
igure 7: a view as in Figure 5 showing a second embodiment of the cutter system;
igure 8: a view as in Figure 6 showing a second embodiment of the cutter system;
igure 9: a view as in Figure 3 showing any third embodiment of the cutter system;
21 71 ~99 Figure 10: a detail of the cutter system shown in Figure 9;
igure 11: a cross section at greater in the area of the cutter, through a cutter system;
igure 12: a cross-section on the line XII-XII in Figure 11.
Figures 1 to 4 show that the apparatus that is used to carry out the cutting process comprises a fixed sub-structure 1, at the outer ends of which there are two supports 2. Two horizontal U-sections 8 are arranged opposite each other and, as can be seen from Figure 4, these form an upper inner clamping jaw 10 that incorporates a hollow spacei these two sections of the clamping jaw 10 are connected rigidly to each other by means of the U-clamp piece 9. A movable frame 1' is so arranged that it can slide vertically on the sub-structure 1. The movable frame contains a pair of horizontal U-sections 3 that are arranged opposite each other and in this way form a lower channel-like clamping jaw 13. Two pairs of vertical side beams are arranged close to the ends of this lower clamping jaw 13, and these are connected at their ends by means of a cross tie 5. In addition, there are two horizontal longitudinal beams 6 between which are installed a plurality of parallel rollers 7 so as to form a horizontal supporting surface for the belt that is to be cut up.
At their opposite ends, the two vertical side beams are connected in pairs by means of cross pieces 4'. Each cross piece 4' is supported by a double-acting cylinder 12, the shaft of which is connected to the U-clamp 9 that is installed on the upper clamping jaw 10 and is located between the side beams 4. The cylinders 12 are either hydraulic or pneumatic cylinders. They can work synchronously in order to raise or lower the lower movable clamping jaw 13 in such a way that this remains parallel to the fixed upper clamping jaw 10. There are off-set guide 2~ 7I 79~
elements arranged between the fixed section 8 and the vertically movable side beams 4. These elements can incorporate guides, although these are not shown in the drawing.
The upper flanges 14 of the sections 3 form the clamping surfaces of the lower clamping jaw 13 and are located at about the same level as the surface of the rollers 7. As can be seen in Figure 5, the flanges 14 are separated by a slot 16 through which a cutter 17 can move. The lower flanges 18 of the section 8 form the clamping surface of the upper clamping jaw 10 and are similarly separated by a slot 19 that permits passage of the cutter 17.
In the drawing, the flanges 14 and 18 that are opposite each other, together with the clamping surfaces that are formed by them, are shown as being flat. However, they can also incorporate raised portions or additional shapes in the form of ridges, pyramids, and the like in order to hold the belt that is to be cut up more securely, particularly if this belt is of an extremely elastic material and displays a recognizable wear pattern.
The two sections 8 that form the upper, fixed clamping jaw 10 contain the cutting means that consist of a carriage with the cutter 17, as well as a chain-drive system 21 that runs over two sprockets 22, 23 that are mounted on the ends of the sections 8.
The sprocket 22 is driven by an electric geared motor 24. The other sprocket 23 is installed on a chain-tensioning system that has an opening 26 in the vicinity of each section 8; these openings simplify installation and removal of the cutter 17 on or from the carriage 20. A removable housing 27 that is arranged above the lower clamping jaw 13 protects the blade in this area.
2~71~
Another housing 28 protects the drive system for the chain that is used to move the carriage 20.
Figures 5 and 6 show the carriage 20 that consists essentially of two side plates 20, between which the cutter 17 is located. The ends of the chain are secured at the ends of the two plates 30.
The carriage is guided in the interior of the section 8 by means of ball bearings 33 that serve as rollers. The outside diameter of each ball bearing is smaller than the clearance within the interior of the section 8 in order to allow free play 34 for the carriage 20 and the cutter 17, and permit the cutter 17 to center itself on the belt that is to be cut up, as will be described below. The plates 30 and the cutter 17 are connected to each other by horizontal bolts that pass through bores.
Figure 6 shows that each end of the cutter 17 incorporates a cutting notch that is approximately V-shaped in longitudinal profile and comprises two parts 36 and 37 that are directly opposite each other, with each being symmetrical to the other relative to the horizontal center line 30. Each V-shaped cutting notch ends in a center concave section 39. The cutter 17 is preferably of high-speed steel that is cut out by means of a laser. The treatment of the cutting notch and the cutting angle will depend on the product that is to be cut up. In general, it is not made extremely sharp, so that the cutter notch remains less sensitive. Such a design makes it possible to manufacture a relatively thin cutter 17 that can cut rubber and even metal armouring and other material that may be embedded in the rubber.
The symmetrical arrangement of the two parts 36 and 37 of the cutter makes it possible for the cutter 17 to be self-centering relative to the element that is to be cut up and which is held between the two clamping jaws 10, 13. In the present case, it is the vertical free play of the carriage within the upper clamping jaw 10 that permits this self-centering.
This free play can also be obtained if the cutter 17 is installed so as to be able to move on the carriage 20. During the cutting process, the cutter 17 is moved transversely to the belt and through the slots 16 and 19 that are located between the two upper and lower clamping jaws 10, 13.
The fact that the cutter 17 has two pairs of cutter parts 36, 37 makes it possible to make alternating cuts, first in one and then in the other direction. But even in those cases in which an alternating cut is not intended, this type of cutter can be of interest because once one cutter notch has become blunt, the working direction can be reversed and a change-over be made so that the other cutting notch is used.
As compared to Figures 1 to 6, Figures 7 and 8 show a variation of the cutter by that makes it possible to cut particularly thick belts that are reinforced by very thick steel cables. The cutter 50 is the essential element of a carriage 51, and the upper clamping jaw 10 contains an axle 52 with two journal bearings 53 that have ball bearings. Within the lower clamping jaw 13 there is an axle 54 with two journal bearings 55 that have ball bearings. The cutter 50 has a straight cutting edge 50' that extends obliquely in the direction in which the cut is made. It is preferred that this be manufactured from high-speed steel. The flange 14 of the lower clamping jaw 13 can be provided with fixed blades 56 that are similarly manufactured from high-speed steel.
The blade 56 consists of two cutting edges 56' on both sides of the slot 16 of the lower clamping jaw 13. As soon as the cutter 50 encounters resistance during the cutting process, it is held in a position in which the journal bearings 53 of the carriage 51 21 71 ~99 press against the upper flange of the section 8, when the slide bearings 55 are pressed against the back of the flange 14 of section 3. In this position, the cutter notch 50' exerts a force on the belt that is to be cut and part of this is directed onto the lower clamping jaw 13 and attempts to squeeze the inner cable of the belt that is to be cut between the cutting edge 50' of the cutter 50 and the cutting edges 56' of the blades 56. In one variation it is also possible that the cutter 50 incorporate a notch of such a kind that a cutter notch that is V-shaped as in the previously described embodiment will result.
The method is very simple to carry out, and it can be automated without any difficulty. The appropriate operating systems are installed in the control box 40 which, amongst other items, contains the electrical control unit and the power supply for the geared motor, as well as the electro-hydraulic or electro-pneumatic units for actuating the cylinder 12.
Figure 3 shows the belt 41 that is to be cuti this is a rubber conveyor belt that is reinforced, for example, by wires or metal cables 42 that must be cut transversely, along a cut line 43. The belt 41 that is placed upon the rollers 7 can be pushed between the clamping jaws 10 and 13 manually by an operator before the cutting process begins. In this way, it is possible to cut up an old, worn out conveyor belt into small pieces that are easy to handle, and to do so very quickly.
Once the belt 41 has been correctly positioned between the clamping jaws 10, 13, with the desired cut line in the proper position, these clamping jaws 10, 13 are pressed against each other by actuating the cylinder 12. Then, the blade 17 that is initially located at one end of the clamping jaws 10, 13 starts to move, driven by the drive system. Because of the fact that the 2~7~799 two cutting edges of the cutter are arranged at an acute angle relative to each other, during the cutting process the belt 41 is located between these two cutting edges, i.e., the blade 17 centers itself automatically relative to the belt 41. The belt material is cut from both sides by the cutting edges so that a symmetrical and particularly powerful cutting action results, and this cuts through the metal armouring without any problem.
Figures 9 to 12 show another embodiment of the cutter system. The ends of the clamping jaws 10, 13 are connected at one end through a hinge joint 60. In order to make it possible to push the belt 41 between the opened clamping jaws 10, 13 from the other side, the cutter system, including the clamping jaws 10, 13, can be opened completely at the end 61 that is remote from the hinge joint 60. To this end, as can be seen in Figure 10, the piston rod 62 of the cylinder 12 can be released from the lower clamping jaw 13 after removal of a safety pin 63 from the lower clamping jaw 13. Then the lower clamping jaw 13 can be dropped away from the upper clamping jaw 10 by pivoting it about the hinge joint 60, and the belt 41 can be inserted or removed at the side. This is a particular advantage in the case of repairs to endless conveyor belts that cannot be inserted into the cutter system from the end. A stop 64 that can be swung into position between the two clamping jaws 10, 13 is located at the same end of the clamping system as the hinge type 60, and this limits the maximum angle to which the clamping jaws 10, 13 can be opened.
Lifting eyebolts 65 in the top of the cutter system make it possible to lift this to the desired workplace by means of a crane, and optionally make cuts when it is in the raised position. Guides for the forks of a fork-lift truck or other load-handling equipment can be used for this purpose in place of the lifting eyebolts 65.
2~ 71 79~
In the embodiment of the clamping jaws 10, 13, of the carriage 20, and of the cutter 17 that is shown in Figure 11 and Figure 12, each of the two clamping jaws 10, 13 consists of two parallel beams in the form of a double-T. The upper pair of beams form the upper clamping jaw 10, the lower pair of beams form the lower clamping jaw 13; the space between the beams is so narrow because of suitable distance pieces that the elongated slots 16, 19 that are just wide enough for passage of the cutter 17. In this way, the cutter 17 is guided mainly by the edges of these elongated slots 16, 19. The guide slot that is formed in this way is so narrow that the cutter 17 is held so as to be essentially rigid in the longitudinal direction of the belt.
In contrast to the foregoing, the cutter 17 has an obvious amount of free play 34 in the direction perpendicular to the flat sides 66 of the belt 41. This free play 34 is made up of an upper space 34' and a lower space 34", as is shown in Figure 12. The upper space 34' is located between support rollers 67 in the area of the upper longitudinal side of the carriage 20 and the guide surfaces 68 of the clamping jaw 10 that accommodates the carriage. The lower space 34" is located between the under side 69 of the carriage 20 and the flange 18 of the clamping jaw 10 that is located there. The drive system 21 in the form of the chain is secured by a pin 69' close to the under side of the carriage 20 in order that the force be applied close to the carriage 17.
Because of this free play for the carriage 20, the cutter 17 that is connected rigidly to the carriage 20 centers itself automatically in the vertical direction with reference to the belt 41 or the wires and metal cables 42 that are embedded therein. During the cutting process, these wires move precisely into the concave ground section 39, where the two symmetrically 2~71~9~
ground cutting edges 70, 71 of the cutter converge. The space between the cutting edges 70, 71 is smaller here than the diameter of the metal wires 42 that are to be cut through. In the embodiment shown in Figure 12, the cutting edges 70, 71 that are in a V-shaped configuration and subtend an acute angle are straight. However, it is also possible to give the cutting edges 70, 71 a slightly convex shape in the direction of the belt 41, e.g., to impart a parabolic shape to them. In this case, the cutting edges 70, 71 form an ever more acute angle in the direction toward the end of the cutting notch, in the section 39.
The average angle between the cutting edges 70, 71 should be at least 10 degrees and at most 45 degrees in this case.
In place of grinding the cutter 17 itself, it is also possible to configure the cutter as a cutter body in which suitable cutter inserts are then installed, e.g., cutter inserts that are of tungsten, (Widia steel) or ceramic. In this case, it is not necessary to disassemble the cutter or the carriage when the cutter becomes blunt. All that need be done is to replace the cutter inserts.
In order to ensure that equal pressure is exerted by the clamping ]aws 10, 13 across their whole length it is possible to provide suitable line of flexure compensation, e.g., by a precisely determine convex pre-curvature of the two clamping jaws 10, 13 toward each other.
~ 71~9 INDEX TO REFERENCE NUMBERS
REFERENCE
1' FRAME
4' CROSS PIECE
CROSS TIE
UPPER CLAMPING JAW
CARRIAGE
CHAIN TENSIONING SYSTEM
SIDE PLATE
~717~9 33 BALL BEARING, SUPPORT ROLLER
34" CLEARANCE
34' CLEARANCE
CONTROL BOX
42 WIRES, METAL CABLES
CUTTER
50' CUTTING EDGE
SLIDING BEARING
56' CUTTING EDGE
HINGE JOINT
2~7~.~
LIFTING EYEBOLT
69' PIN
FIRST CUTTING EDGE
CROSS TIE
UPPER CLAMPING JAW
CARRIAGE
CHAIN TENSIONING SYSTEM
SIDE PLATE
~717~9 33 BALL BEARING, SUPPORT ROLLER
34" CLEARANCE
34' CLEARANCE
CONTROL BOX
42 WIRES, METAL CABLES
CUTTER
50' CUTTING EDGE
SLIDING BEARING
56' CUTTING EDGE
HINGE JOINT
2~7~.~
LIFTING EYEBOLT
69' PIN
FIRST CUTTING EDGE
Claims (13)
1. A method for cutting belts that incorporate reinforcing inserts, in particular for cutting conveyor belts that are of an armoured elastomer, in which the belt is arranged between two clamping jaws, and in order to make the cut, the clamping jaws, with the belt arranged between them, are pressed against each other and at the same time a cutter is guided along the clamping jaws, transversely to the longi-tudinal direction of the belt, and through the belt material, this being done by means of a drive system, characterized in that during the cutting process the material from which the belt is made is cut on both sides by the cutting edges of the cutter, which subtend an acute angle, and which are each straight or curved convexly towards the belt.
2. A method as defined in Claim 1, characterized in that the cutter is guided through the material from which the belt is made with a clear amount of free play, so that the cutter centers itself automatically relative to the reinforcing inserts that are embedded in the belt.
3. A cutter for belts that incorporate reinforcing inserts, in particular for conveyor belts that are of an armored elastomer, with a clamping system that comprises two clamping jaws (10, 13) that are arranged transversely to the belt (41) and can be pressed against each other with the belt (41) interposed between them, and with a cutter (17) with at least one cutting edge (36, 70, 50') that can be moved along the clamping system by using a drive system (21), characterized in that the cutting edge (36, 70, 50') is either straight or curved convexly towards the belt; in that an additional cutting edge (37, 71, 56') is arranged so as to subtend an acute angle with the cutting edge (36, 70, 50'); and in that the belt (41) is located between the two cutting edges (36, 70, 50'; 37, 71, 56') during the cutting process.
4. A cutter as defined in Claim 3, characterized in that both cutting edges (36, 70; 37, 71) are formed on the cutter (17).
5. A cutter as defined in Claim 3 or Claim 4, characterized in that both cutting edges (36, 70; 37, 71) are configured so as to be symmetrical to each other and so that together they form an approximately V-shaped cutter notch.
6. A cutter as defined in one of the Claims 3 to 5, characterized in that the cutter (17) has a clear amount of free play (34, 34', 34") in the direction perpendicular to the flat sides of the belt (41) and, in contrast to this, the cutter (17) is held relatively rigid in the longitudinal direction of the belt.
7. A cutter as defined in one of the Claims 3 to 6, characterized in that the cutter (17) is arranged on a carriage (20) that can move back and forth along the clamping system.
8. A cutter as defined in Claim 7, characterized in that the cutter (17) is secured rigidly to the carriage (20); and in that the carriage (20) is guided on one of the two clamping jaws (10, 13) of the clamping system with a clear amount of vertical free play (34, 34', 34").
9. A cutter as defined in Claim 8, characterized in that on its long side that is remote from the cutter (17), the carriage (20) is fitted with support rollers (33, 67) that can run on the guide surfaces (68) of the clamping jaw (10) that accommodates the carriage (20); and in that tractive means (21) to move the carriage (20) are provided, these being secured to the carriage (20) at the level of that half of the carriage (20) that is proximate to the cutter (17).
10. A cutter as defined in one of the Claims 3 to 9, characterized in that the clamping jaw (10, 13) incorporates an elongated slot (16, 19) through which the cutter (17) is guided.
11. A cutter as defined in Claim 10, characterized in that the lateral guidance of the cutter (17) is effected totally or in part by the elongated slot (16, 19).
12. A cutter as defined in one of the Claims 3 to 11, characterized in that the clamping jaws (10, 13) can be pivoted toward each other by means of a hinge joint (60);
and in that the cutter, including the clamping jaws (10,
and in that the cutter, including the clamping jaws (10,
13), can be opened completely at the end (61) that is remote from the hinge joint (60) in order that the belt (41) can be placed between the opened clamping jaws (10, 13) from the side.
13. A cutter as defined in Claim 12, characterized by means (stop 64) to limit the angle to which the clamping jaws (10, 13) can be opened.
13. A cutter as defined in Claim 12, characterized by means (stop 64) to limit the angle to which the clamping jaws (10, 13) can be opened.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9503176A FR2731645B1 (en) | 1995-03-15 | 1995-03-15 | APPARATUS FOR CUTTING A FLEXIBLE FLAT ELEMENT, IN PARTICULAR A CONVEYOR BELT |
| FR9503176 | 1995-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2171799A1 true CA2171799A1 (en) | 1996-09-16 |
Family
ID=9477173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002171799A Abandoned CA2171799A1 (en) | 1995-03-15 | 1996-03-14 | Method for cutting belts that incorporate reinforcing inserts, and a cutter for belts of such a kind |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0732179B1 (en) |
| CN (1) | CN1141228A (en) |
| CA (1) | CA2171799A1 (en) |
| CZ (1) | CZ288169B6 (en) |
| DE (1) | DE59602509D1 (en) |
| ES (1) | ES2136334T3 (en) |
| FR (1) | FR2731645B1 (en) |
| GR (1) | GR3031676T3 (en) |
| PL (1) | PL180263B1 (en) |
| RU (1) | RU2159177C2 (en) |
| ZA (1) | ZA962086B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866260A (en) * | 2019-03-11 | 2019-06-11 | 浙江凯恩电池有限公司 | Cut out film machine |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737951B (en) * | 2013-12-26 | 2016-01-06 | 桂林橡胶机械有限公司 | Waterstop anti-package adjusting device |
| EP3233459B1 (en) * | 2014-12-17 | 2021-08-04 | Pirelli Tyre S.p.A. | Process and apparatus for building tyres for vehicle wheels |
| CN109049775B (en) * | 2016-08-31 | 2023-09-29 | 马鞍山锐生工贸有限公司 | Production method of conveyor belt |
| CN109080182B (en) * | 2016-08-31 | 2020-09-15 | 马鞍山锐生工贸有限公司 | Efficient rubber V-belt processing method |
| CN114131676B (en) * | 2022-01-29 | 2022-04-12 | 胜利油田长龙橡塑有限责任公司 | Automatic cutting device is used in production of beam-pumping unit V belt |
| CN118003106B (en) * | 2024-04-09 | 2024-06-14 | 山西晶沃新材料科技有限公司 | Continuous type heated board pay-off structure and cutting machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE927315C (en) * | 1948-10-02 | 1955-05-05 | Curt Matthaei | Cutting device for conveyor belts u. like |
| DE819802C (en) * | 1950-09-07 | 1951-11-05 | Hans Ziller | Device for cutting conveyor belts, drive belts or the like. |
| DE834951C (en) * | 1950-12-09 | 1952-03-27 | Matthias Schlebusch | Cross cutting device |
| GB839441A (en) * | 1958-10-28 | 1960-06-29 | Ernest Arthur Timson | Improved means for cutting webs of paper or the like |
| FR1361430A (en) * | 1963-03-29 | 1964-05-22 | Cerclage Pierre Brunon | Apparatus for unwinding and cutting roll paper |
| FR2098592A5 (en) * | 1970-07-21 | 1972-03-10 | Lagain Georges | |
| FR2458497A3 (en) * | 1979-06-05 | 1981-01-02 | Kt | Cutting machine for elastic material delivered as a web - holds fabric preventing wrinkling sepg. it from conveyor |
| US4329896A (en) * | 1980-04-09 | 1982-05-18 | Karl Singer | Slitter for severing laminated objects |
| WO1989012532A1 (en) * | 1988-06-24 | 1989-12-28 | Hot Roller Laminating Co. (Melb.) Pty. Ltd. | Cutter devices |
| DE4125917A1 (en) * | 1991-08-05 | 1993-02-11 | Stork Gmbh Regelungstechnik Un | Flexible plate cutter - has retainer to hold the plate for cutting mechanism without limit stops |
-
1995
- 1995-03-15 FR FR9503176A patent/FR2731645B1/en not_active Expired - Fee Related
-
1996
- 1996-02-27 EP EP96102886A patent/EP0732179B1/en not_active Expired - Lifetime
- 1996-02-27 ES ES96102886T patent/ES2136334T3/en not_active Expired - Lifetime
- 1996-02-27 DE DE59602509T patent/DE59602509D1/en not_active Expired - Fee Related
- 1996-02-29 CZ CZ1996615A patent/CZ288169B6/en unknown
- 1996-03-12 PL PL96313206A patent/PL180263B1/en not_active IP Right Cessation
- 1996-03-13 CN CN96101899A patent/CN1141228A/en active Pending
- 1996-03-14 ZA ZA962086A patent/ZA962086B/en unknown
- 1996-03-14 RU RU96104549/12A patent/RU2159177C2/en active
- 1996-03-14 CA CA002171799A patent/CA2171799A1/en not_active Abandoned
-
1999
- 1999-10-27 GR GR990402766T patent/GR3031676T3/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866260A (en) * | 2019-03-11 | 2019-06-11 | 浙江凯恩电池有限公司 | Cut out film machine |
| CN109866260B (en) * | 2019-03-11 | 2023-08-29 | 宇恒电池股份有限公司 | Film cutting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| PL313206A1 (en) | 1996-09-16 |
| RU2159177C2 (en) | 2000-11-20 |
| CZ288169B6 (en) | 2001-05-16 |
| EP0732179B1 (en) | 1999-07-28 |
| ZA962086B (en) | 1996-11-27 |
| GR3031676T3 (en) | 2000-02-29 |
| FR2731645B1 (en) | 1997-05-23 |
| EP0732179A1 (en) | 1996-09-18 |
| PL180263B1 (en) | 2001-01-31 |
| ES2136334T3 (en) | 1999-11-16 |
| CZ61596A3 (en) | 1996-10-16 |
| AU688669B2 (en) | 1998-03-12 |
| DE59602509D1 (en) | 1999-09-02 |
| CN1141228A (en) | 1997-01-29 |
| FR2731645A1 (en) | 1996-09-20 |
| AU4805596A (en) | 1996-09-26 |
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