MXPA00000030A - Press brake tool holder - Google Patents

Abstract

A press brake tool holder (10) having a horizontally elongated body (12) having a support plate (14), and a horizontally elongated clamp (40, 42) having upper (66) and lower (68) portions and pivotally attached to the body between the upper and lower portions so as to capture between it and the support plate the upwardly extending shank (30) of a brake press tool. A handle-operated cam shaft (72) is carried by the body and is linked to the upper portion of the clamp by cam follower elements (104, 106) which provide a rigid linkage. Clamps may be thus mounted to both sides of the body, and each can be independently oprated when the other is removed. The clamp is mounted to the body by means of mounting pins (52) having articulating heads (56) that are slidingly received in slots in the body, the slots having enlarged entryways (60) enabling the clamp to be removed from or attached to the body by sliding the clamp with respect to the body to align the articulating heads with the slot entryways.

Description

TOOL SUPPORT FOR FOLDING FIELD OF THE INVENTION The present invention is in the field concerning bending machines of the type used to configure a metal sheet material and to the articles of manufacture and particularly to supports that are used to releasably support forming tools in a folder . BACKGROUND OF THE INVENTION Folders are commonly equipped with a lower table and an upper table, one of which, commonly the lower table, is vertically movable towards the other table. The training tools are mounted on the tables in such a way that when the tables are assembled, a piece of work between the training tables is folded in an appropriate way. It is common for the top table to include a male forming die having a bottom workpiece forming surface of the desired shape, such as a right angle elbow, and for the bottom table to have an aligned die and suitably, such that when the die is brought together with the forming tool, a work piece between the two is pressed by the forming tool in the die and in this way is given the appropriate folded shape. It is common for forming tools and dies to be horizontally elongated so that workpieces of various widths can be adjusted. It is often necessary to exchange training tools and matrices when a different bending operation is going to be carried out. The matrices, which are commonly supported on the bottom table of a folder, are easily removed and exchanged for others. The training tools that are usually mounted on the top table of a folder are often not easily replaced. The forming tools are usually held by a C-press or other support to the horizontally elongated bed of the upper table. Once the press has loosened, the training tool can, in some cases, be pulled down and in others it must be removed by sliding horizontally out of the press. If a long training tool is to be replaced, it becomes difficult to slide the press forming tool due to the proximity of the neighboring presses and the training tools that by themselves have to be removed in order to complete the exchange process of tools . Because long forming tools can be quite heavy, when a press is loosened to the point where the tool can be removed by moving it down, a tool can slip and fall, potentially causing injury to the operators of the folder. Several folder brackets have been designed in an effort to facilitate exchange of one training tool by another. For example, Treillet in the U.S. patent. No. 4,993,255, describes a tool holder that is connected by a C-press to the bed of the upper table. Through the use of a leverage mechanism, the upstanding rod of a forming tool is captured between a pivoting press and a supporting portion, the rod and the press have cooperating surfaces that allow the tool to be easily inserted. in the support. An interlocking cam is used to interlock the press against the forming tool. Kawano, in the U.S. patent. No. 5,513,514, the US patent. No. 5,511,407, the US patent. No. 5,572,902 and European Patent Publication 0 644 002 A2, show tool holders of the same general type in which a pivoting press is used to receive the rod of a tool between it and the mounting plate of the support. In each of these patents, the support is equipped with a threaded mechanism that is operated by a lever that pivots from side to side to latch and release the press, the force is transmitted from the lever to the press by a spring structure. It remains difficult to remove a tool for forming a folder support, for the reasons stated above. Care should be taken to avoid dropping the tools of the folder, as tools are exchanged in a folder stand and care should also be taken during the connection of a tool holder to the top table of a folder, since loosening the presses currently used to hold a folder support to the bed, it can allow the support to fall under its own weight. Even more, with certain tool holders for training tools, the force exerted by the press against the support to keep it in position varies over the length of the press; this in turn can cause accidental movement of the forming tool with respect to the tool holder. SUMMARY OF THE INVENTION The present invention provides a support for mounting a folding tool having a horizontally elongated projecting mounting rod in a folder. The support includes a horizontally elongated body having a downwardly extending support plate configured to engage the tool shank. A perforation is formed through the body on the support plate, the perforation extends parallel to the long direction of the body. The support includes a horizontally extending press extending over the body and having upper and lower portions, the press is pivotally connected between its upper and lower portions to the body and is pivotally movable between the clamped and released positions. The lower portion of the press is positioned in opposition to and spaced from the support plate, and is oriented to clamp between it and the support plate the tool shank when the lower press portion is pivoted towards the support plate. Received rotationally in the bore is an elongated cam arrow having a plurality of leverage surfaces spaced about its length. The body includes a plurality of cam follower elements that are rigid (as opposed to resilient) operatively positioned between the leverage surfaces and the upper portion of the press to force the upper portion of the press outwardly from the body in response to rotation of the cam arrow, the lower portion of the press is thus forced towards the support plate, as the press pivots in its press clamped position, to capture the tool shank between it and the support plate. A manually operated handle is releasably coupled to the cam arrow, to allow the cam arrow to be rotated in one direction to move the press to its clamping position by press and in the other direction to release the force in the press and allow I return to the released position. In this way, force is transmitted from the cam arrow to the press to move it to its clamped position through a mechanically rigid joint, ie, without the use of resilient elements in the joint. Because the cam arrow includes a plurality of spaced leverage surfaces which in turn exert force against a plurality of cam follower elements that are positioned over the length of the upper surface of the press, the pressure exerted by the lower portion of the press against the rod of the tool is substantially uniform from one end of the press to the other. Preferably, the support of the invention includes a plurality of grooves formed in the lower portion of the press, which extend downward to define a plurality of individual finger elements, each of which is capable of resiliently engaging independent the rod of the tool. In this way, slight imperfections in the support or in the shanks of the forming tool are easily adjusted. In a preferred embodiment, the body of the tool holder includes an upwardly extending mounting plate, which is mountable on the bed of a folder, the mounting plate has a downwardly extending shoulder that extends horizontally. In this embodiment, a fastener is used to mount the mounting plate against the bed, the fastener is firmly mounted to the bed and has an upwardly directed shoulder which engages the shoulder directed downwardly of the mounting plate, to restrict accidental release of the mounting plate. the mounting plate when the fastener comes loose from the bed. Preferably, the tool holder of the invention includes a plurality of compressible resilient elements, for example compression springs, between the press and the body and which move the press away from the body. When the press is in its released position, it can be pivoted against the springs, to allow the shank of a tool to be inserted from below upwards between the press and the body support plate. The rod of the tool and the press, preferably have cooperating surface configurations, which allow the press to capture the forming tool and prevent it from being released accidentally. Conveniently, the bottom portion of the press is provided with a lip extending toward the body support plate, the lip having an upwardly directed shoulder generally. For coupling with the press, the forming tool conveniently has a groove formed in its rod, the groove having a shoulder directed generally downwards, in such a position and oriented that when the tool is pushed upwards between the press and the plate In this case, the lip of the press is at least partly received in the groove with the shoulder directed upwards of the lip which engages and supports the shoulder directed downwards of the groove. Subsequently, the rod or cam shaft that can be rotated about its axis to firmly and securely lock the rod of the tool between the press and the support plate as the press acquires its subject position. The slot and shoulder structure described above also allows the forming tool to be pulled down with reasonable security from the support. In this process, the cam rod is rotated to bring the press to its released position. Manually pulling the tool bottom horizontally generally and perpendicular to the long direction of the support, away from the press, causes the tool shank to pivot with respect to the bottom edge of the support plate, the upper edge of the shank of the This tool presses outward on the press, which in turn pivots resiliently outward, to allow the press area to escape from the groove in the tool shank. The tool, which is already firmly attached, can then be lowered from the holder. In a preferred embodiment, the press or the body of the tool holder, preferably the body, is provided with a plurality of grooves each having a notched surface and each groove having an increased width portion adjacent its end. In this embodiment, the other of the press and the body is provided with respective mounting pins extending outward and ending in enlarged heads which are received within the enlarged ends of the grooves. The heads and notched surfaces of the grooves have mating surfaces and allow articulation between the heads and the tools. To mount a press to the body, the articulating pin heads are inserted through the large opening in the slots and the press slides on the surface of the body, until the heads are received within the notched surfaces of the slots with the slots. which articulate. The enlarged articulating heads of the pins, together define the pivot axis of the press with respect to the body. Preferably, the support is provided with a plurality of compressible resilient elements between the press and the body that move the press away from the body, thereby keeping the articulated heads of the pivot pins in articulation contact with the notched surfaces of the grooves. . A manually operated lever is connected at one end of the cam arrow, such that the movement of the lever in a plane perpendicular to the long direction of the support (this is away from and toward the operator) and will rotate the cam arrow in box locked position where the press in its clamped position is held firmly against the rod of a forming tool and an unlocked position, where the press, now in its released position, can hold resiliently with respect to the body. The movement of the handle towards and away from the folding bed is a user-friendly movement, which is easily controlled by an operator. The handle is conveniently removed from the cam arrow with ease so that it does not interfere with the operation of the folder. In its preferred embodiment, the support of the invention comprises a pair of presses, one on each side of the support plate. Rotation of the cam arrow operates to move the upper portion of each press outward, with movement resulting from the bottom portion of the presses inward toward the support plate. Tooling can be mounted on both sides of the support plate, the edge of the tooling that engages the workpiece is in the same position regardless of which side the tool shank is mounted on the support plate. DESCRIPTION OF THE DRAWING Figure 1 is a perspective view of a tool holder for a folder, of the invention with connected tooling; Figure 2 is an exploded perspective view of the tool holder of Figure 1; Figure 3 is an exploded view, in partial cross-section of the tool holder of the Figure 1; Figure 4 is a cross-sectional view of the tool holder of Figure 1 in its tool holding position; Figure 5 is a cross-sectional view similar to that of Figure 4, but showing the tool holder in a released position; and Figure 6 is a schematic exploded perspective view of the tool holder of Figure 1, showing the removal of the tool from the support. DESCRIPTION OF THE PREFERRED MODALITY With particular reference to Figure 1, the tool holder of the invention is designated 10, and comprises a horizontally elongated body that is generally shown as 12, the body includes a supporting plate extending downwardly 14 to which it is attached. connects a mounting plate 16, the support plate and the mounting plate have contiguous generally upright surfaces 18, 20, respectively and are joined together by a threaded pin 22 as illustrated in Figure 3. The support plate includes a downwardly directed shoulder 24 that is adapted to engage an upwardly directed shoulder 26 of a folder tool 28. The folder tool has a rod extending upwardly 30 with a vertical surface 32 adapted to contact a surface 34 of the plate of support that rises from its downwardly directed shoulder 24. This configuration is illustrated in Figure 3, the horizontal shoulder 24 and the vertical surface 34 of the plate support find the horizontal shoulder 26 and the vertical surface 32 of the folding tool 28. From Figures 3 to 5, it will also be noted that the support plate 14 also has a vertical surface 36 which in cooperation with its bottom shoulder 24 can supporting the vertical surface -32 and the upwardly directed shoulder 26 of a tool 28 when the same is inverted. Figure 3 illustrates a folding tool 28 having an edge that encounters the lower workpiece 38 and it will be understood that the orientation of this edge with respect to the tool holder remains constant regardless of which side the support plate is mounted on. the rod 30 of the tool. The presses 40, 42 are mounted on the sides of the body, one of the presses 40 is mounted on the support plate 14 and the other press 42 is mounted on the mounting plate 16. Figures 1 and 2 illustrate a preferred embodiment in where each mounting plate is composed of two sections that are substantial mirror images of each other, which butt horizontally on the width of the tool holder and can be removed separately. With reference to Figure 2, the press 42 in this manner composes as a first unit 44 and a second unit 46. The press 40 is composed of a first unit 48 and a second unit 50. Each press half is provided with a pair of horizontally spaced pins 52, each pin has a threaded end 54 that is received in a threaded bore that is formed in the press. Each pin has a rounded, enlarged head 56. As illustrated probably best in Figure 2, each of the support plate 14 and the mounting plate 16 includes a plurality of horizontally aligned openings 58. Each opening forms a horizontally elongated slot. having an enlarged end opening 60 and a notched groove portion 62. The enlarged rounded heads 58 of the pins are dimensioned to be received through the enlarged end openings 60 of the grooves. When in this position, the individual presses slide horizontally towards the center line of the tool, the enlarged rounded heads 58 slide in engagement with the notched surfaces 62 of the grooves. In this way, each press half can be released from the holding tool by sliding the press horizontally away from the midline of the tool, until the pins align with the enlarged openings 60., whereby the press halves can simply be removed from the support plate and mounting plate, respectively. A series of compression springs 64 are mounted between the confronting surfaces of the press and the mounting plate or mounting plate, respectively, such that when the enlarged rounded ends 56 of the pins are received within the notched surfaces of the housing. slot 62, the springs 64 tend to push the presses away from the support plate and the mounting plate, such that each press is newly attached to the body by the pins 52. The confronting surfaces of the presses and the respective plates bracket and mounting plate, are provided with recesses to receive and support the ends of the springs. It should be noted that the pins 52 separate each press in an upper portion 66 and a lower portion 68, such that as the upper press halves are forced to diverge, that is, they move away from the respective support plate and plate. As the mounting means, respectively, the bottom portions of the presses converge towards the respective vertical surfaces 34, 36 of the support plate, the pivoting occurs with respect to the axes defined by the centers of the enlarged, rounded pin end portions 56. A horizontal bore 70 is formed through the length of the support plate 14, as illustrated in Figure 2. Coupled rotatably within the bore 70 is the cam arrow 72 as best illustrated in Figure 2, the arrow The cam has a generally circular cross section over its length and includes spaced leveraged sections that may be oval or generally elliptical as illustrated in FIG. 4. The middle section of the cam arrow is provided with a flat surface having a threaded bore 76 for receiving the threaded end 78 of a handle 80. The handle may comprise a handle structure that includes a manually operated knob 82 in a end, a portion 84 containing the externally threaded end portion 78 at its other end and an intermediate arrow portion 86 that is received telescopically within a bore 88 in the portion 84 and is releasably held in the bore by a resilient O-ring 90, all of which is best illustrated in Figure 3. The support plate 14 is provided with a central vertical slot 92 at its upper edge, such that when the cam arrow 72 is fully received within the bore 70 and the threaded end 78 of the handle is received in the threaded bore 68, the handle can be moved up and down through the slot 92. Similarly, an elongated slot 9 4 is formed through the thickness of the mounting plate 16, in alignment with the slot 92, the handle 80 passes through the slot 94 and the latter slot allows the handle to move easily between an upper portion shown in the Figure 4 and a lower portion as illustrated in Figure 5. The handle in this manner moves in a plane perpendicular to the axis of the cam arrow 72. Still further, the two press portions 44, 46 that are affixed to the plate of assembly 16 have confronting recessed surfaces as illustrated at 98 in Figure 1 and Figure 2, which define an open slot upwardly allowing movement of the handle in the previously described manner. With reference to Figures 2, 4 and 5, it will be seen that alienated perforations are formed transversely across the thickness of the support plate and mounting plate, the perforations intercepting the perforation 70 within which the cam arrow 72 is received. , the perforations are in line with the portions of the cam arrow having oval leverage surfaces 74. The transverse perforations formed in the support plate are designated 100, and those in the mounting plate as 102. Within these perforations are placed sliding cam follower pins that extend between the cam leverage sections 74 of the cam arrow and the upper portions of the presses. The cam follower pins between the cam arrow and the press 40, 104 are designated and the cam follower pins between the cam arrow and the press 42, are designated 106. Those ends of the cam follower pins that engage the oval leverage surfaces of the cam arrow, preferably are slightly concave , while the outer ends of the cam follower pins are preferably slightly convex for coupling hemispherical recesses 108 formed in the confronting surfaces of the presses. As best illustrated in Figures 1 and 2, the lower press portion 68 of each press is provided with a series of parallel and spaced thin slots 110 that extend laterally through the press and thus divide the lower section of the press in a series of finger elements, extending downwardly 114, each of which is capable of resiliently and independently engaging the tool shank. In a preferred embodiment, as illustrated in Figure 1, a slot 112 is formed in the press and extends horizontally over the length of the press approximately in the position in which the slot 110 ends up, the slot 112 provides the individual finger elements 114 with increased resilience. As for the finger elements 114, the rod of the tool is independently coupled in a resilient manner, slight imperfections in the support or in the rod of the forming tool are easily adjusted. The operation of the tool holder with respect to more severe bed restraint and clamping release is probably best described in connection with Figures 4 and 5, where the press clamping of a tool on the right side of the tool holder, it is illustrated. As discussed above, the bottom portion of the mounting plate 14 includes vertical surfaces 34 and 36 and a downwardly directed shoulder 24. In the embodiment of Figures 4 and 5, a tool 28 is illustrated with its shoulder directed upwards 26 abutting the shoulder 24 of the support plate, and the vertical surface 32 of the tool shank engaging the vertical surface 34 of the support plate. The presses at their lower ends have lips turned inwardly 116, each lip having an upwardly directed shoulder 118 and an upwardly inclined and inwardly inclined surface 120. The tool shank 30 has a complementary configuration comprising a groove 122 formed for receiving the lip 116, the groove has a downwardly directed shoulder 124 adapted to engage, as a safety measure, the upwardly directed shoulder 118 of the lip of the press. The springs 64 in cooperation with the pins and mounting slots resiliently hold the press in position, such that the spacing between the lip 116 of the press and the confronting surface 34 of the support plate is slightly less than the width of the shank of the tool. As a result, even when the press is in the released or unlocked position, the lip 116 remains at least seated loosely in the slot 122. Again with reference to Figure 5, the tool holder of the invention is illustrated in its released position With press as the rod 30 of a tool has been raised in position within the holder, the lip 116 of the press is received within the slot 122 in the tool shank. In this position, the bottom portions 68 of the presses are allowed to pivot outwardly from the body, as illustrated, against the pressure of the springs 34 (Figure 3), allowing the tool shank 28 to be received between the press on the right side of Figure 5 and the support plate 14. Here, the shoulders 24 and 26 of the tool and the support plate engage with each other, as respective vertical surfaces 32 and 34 of the tool shank and the plate of the tool. support It should be noted in Figure 5 that the portion of the oval stem arrow 74 has been rotated., such that its main axis is vertical, allowing the cam follower pins 104, 106 to slide inward toward the cam arrow shaft, as the bottom portions of the presses are separated from each other.

The manual movement of the handle 82 upwards to the position shown in Figure 4 causes the oval cam 74 to rotate to bring its main shaft into approximately alignment with the cam follower pins 102, 104, the cam 74 displacing these pins outwardly. against the upper portion of the presses and forcing the lower portions 68 of the presses to pivot with each other. As the bottom portion 68 of the right-side press closes on the rod 30 of the tool, the tool is held firmly in the holder. Each press moves independently of each other. If one press is active, for example the other would still operate as described. Shown in cross section at 126 of Figure 4, is the horizontally extending bed of a folder, with the mounting plate 16 of the tool holder mounted on the bed in a manner described below. Between the bottom shoulder 128 of the folder bed, which extends substantially horizontally and the upwardly directed shoulder 130 of the support plate 14, which is at a slight angle to the horizontal, a wedge 132 is placed which has surfaces directed upwards and downwards 134, 136 respectively. These latter surfaces meet the respective shoulders 128, 130. As best illustrated in Figure 2, the wedge 132 tapers in height from one end 138 to the other 140, the taper of the wedge precisely compensating the non-horizontal surface 130 of the plate of support, in such a way that the bottom surface 24 of the support plate is horizontal and parallel to the upper surface 134 of the wedge. In this way, the distance between the bottom edge 38 of the tool and the shoulder 128 of the folder bed can be adjusted by moving the wedge to the left or to the right in Figure 2. Once the Exact height of the edge of the tool 38, the wedge is locked in place by threaded bolts 142 which pass through horizontally elongated grooves 144 formed in the mounting plate and from there into threaded holes 146 in the wedge. In this way, the mounting plate and wedge are securely held together, and when the threaded bolts 142 are loosened, the wedge together with the bolts 142 can move to the left or to the right (as illustrated in Figure 2) as it is desired, to achieve the correct vertical position of the edge of the tool 38. Again with reference to Figure 4, the mounting plate 16 of the tool holder of the invention can be mounted on the bed 126 of a folder by means of a press with generally "C" 148, the latter preferably extends horizontally over the length of the tool holder. The C 148 press is attached to the bed by means of a threaded screw 150 which passes through the C-press on the bed 126. At its lower edge, the press C 148 includes an inwardly bent lip 152 having a directed shoulder upwardly 154. The lip is received within a horizontally extending slot 156 in the outer surface of the mounting plate, the slot having a downwardly facing shoulder 158 which confronts the shoulder 154 when the tool holder of the invention is mounts in the bed of a folder. When it is desired to mount a folder tool in a support of the invention, the latter is attached to the bed of a folder as in Figure 4, the handle 80 is pulled down in the released position which is generally shown in Figure 5. The rod 30 of a folding tool is then pressed up through the space between the lip 116 of the press and the confronting vertical surface 34 of the support plate. The space between the press and the support plate is preferably not large enough to receive the tool shank. As a result, the upper edge of the rod pushes against the surface nclinada upwards and inwards 120 of the press, to force the press away from the support plate, a distance sufficient to admit the tool shank, and as the tool moves upward between the press and the support plate, the lip 116 engages by rapid actuation in the groove 122, to prevent the tool from falling off the holder. The surfaces 24 and 26 of the support plate and the tool, respectively, are brought into engagement, and the handle moves upwardly to the position shown in Figure 4, causing the cam followers 104, 106 to leverage outwardly. against the upper portions of the presses for forcing the lower portions of the presses to be converged, the surface 96 of the press rests against the confronting surface 97 of the tool shank. The handle is then simply removed from the tool holder by pulling it up and away from the holder, the rod 86 of the handle escapes from the perforation 84. The adjustment can be made to the position of the wedge 132, to regulate the height of the wedge 36 of the folding tool. When it is desired to release the tool from the holder, the handle 80 is reconnected to the holder by inserting the arrow 86 into the perforation 84. The handle is pulled by the operator away from the folder and down to the position shown in Figure 6. for releasing press-clamping pressure of the press 42 against the rod of the tool 30. When the handle has thus been moved to its released clamping position by press, the presence of lip 116 in the groove of the rod of the tool, tends to prevent the tool from accidentally falling off the holder. On the contrary, the tool remains somewhat loose between the press and the support plate, the lip of the press preventing the tool from falling. At this point, the tool can slide horizontally from the tool holder unless there is another structure in the step. Preferably, however, the tool is removed from the support by manually holding the tool as illustrated in Figure 6 and pulling its lower end away from the press 42. This movement causes the tool s shaft to pivot with respect to the bottom edge of the tool. the support plate 14, the upper edge of the tool shank presses outward on the press which in turn resiliently pivots outwards to allow the lip 116 of the press to escape from the groove 122 in the tool shank. A worker can use both hands to perform this task, reducing the possibility of accidentally falling the tool. The support of the tool of the invention can be easily removed from the bed of a folder by simply unscrewing the bolts 150. With particular reference to Figure 4, it will be noted that as the bolt 150 is unscrewed from the press bed, the press in C 148 it loosens. However, the upwardly facing shoulder 154 of the lip 152 remains in contact with the downwardly directed shoulder 158 of the groove formed in the mounting plate and tends to prevent the tool holder from accidentally or unintentionally falling off the C-press. Once the bolt 150 has been properly loosened, the tool holder can be clamped manually, the lip of the C-press can be removed in the slot 156 and the tool holder can be safely lowered from the folder bed. While a preferred embodiment of the present invention has been described, it should be understood that various changes, adaptations and modifications may be made, without departing from the spirit of the invention and the scope of the appended claims.

Claims (17)

1. CLAIMS 1. - A support for mounting on a folder or a folding tool having a horizontally elongated mounting rod, the support comprises a horizontally elongated body having a support plate, a cam arrow rotatably supported by the body and which has a plurality of cam leverage surfaces located axially over its length, a horizontally elongated press having upper and lower portions and pivotally connected between the upper and lower portions of the body, the body includes a plurality of horizontally spaced cam follower elements, located between respective camming surfaces and the upper portion of the press for forcing the upper portion of the press away from the body in response to rotation of the cam arrow, thereby forcing the lower portion of the press toward the plate. support to hold the tool mounting rod between the p lower part of the press and the support plate.
2. 2. The support according to claim 1, characterized in that the cam follower elements are rigid and define a mechanically rigid joint between the cam leverage surfaces of the cam arrow and the press. 3. - The support according to claim 2, characterized in that the support plate has a first generally vertical surface facing the press and a second generally oriented vertical surface opposite, the support includes a second of the presses facing the second surface of the support plate, the mechanically rigid articulation between the cam leverage surfaces of the cam arrow and the respective presses force each press into its press clamping position independently of the other press. 4. The support according to claim 1, characterized in that it includes a plurality of mounting pins that extend from one of the press and the body and end in enlarged heads having aligned articulation surfaces that define a pivot axis that is horizontally extends, the other of the press and the body has slots placed to receive and articulate with the enlarged heads, as the press is pivoted about the pivot axis. 5. - The support according to claim 4, characterized in that the grooves include incremental width portions that define entries that admit passage of the enlarged mounting pin portions in the grooves and allow easy removal and connection of the press. The support according to claim 5, characterized in that the grooves include on their lengths a portion having a surface configured to articulate with an articulating surface of an enlarged head of a respective mounting pin. 7. - The support according to claim 6, characterized in that it includes a plurality of compressible elements between the press and body and that move upper and lower portions of the press away from the body, whereby the press can be easily removed from the body at pressing the press towards the body to compress the compressible elements and concurrently sliding the press horizontally with respect to the body to align the enlarged heads with the slot inlets. 8. - The support according to any of claims 1 to 7, characterized in that it includes a handle connected to the cam arrow and movable in a plane normal to the axis of the cam arrow in response to rotation of the arrow and force the Press between positions held by press and released from press subjection. 9. - A support for mounting to a folder or a folding tool having a horizontally elongated mounting rod, the support comprises a horizontally elongated body having a support plate, a horizontally elongated press having upper and lower portions and pivotally connected between the upper and lower portions of the body for movement with respect to a pivot axis between positions held by press and released by press fastening, a plurality of mounting pins extending from one of the press and the body and end in enlarged heads having aligned articulation surfaces defining a horizontally extending pivot axis, the other of the press and the body having slots positioned to receive and articulate with the enlarged heads as The press is pivoted relative to the pivot axis, the slots include incremental width portions defining entryways that allow passage of the enlarged mounting pin portions in the slots and allow easy removal and connection of the press by aligning the enlarged mounting pin portions with the respective entries. 10. The support according to claim 9, characterized in that each slot includes on its length and spacing of its inlet, a portion having a surface configured to receive and articulate with an articulating surface of an enlarged head of a pin. respective assembly. 11. The support according to claim 10, characterized in that it includes a plurality of compression elements placed between the press and the body to resiliently move upper and lower portions of the press away from the body, whereby the press can be easily removed. of the body by pressing the press into the body to compress the compressible elements and by concurrently sliding the horizontal press relative to the body to align the enlarged heads with the slot entries. 12. - The support according to claim 11, characterized in that it includes a horizontally aligned pair of presses mounted on the body and individually removable from the body. 13. - The support according to any of claims 9 to 12, characterized in that it includes a handle movable in a plane normal to the pivot axis, and means responsive to movement of the handle to pivot the press between positions held by press and released from press fastening. 14. A support for mounting on a folder or a folding tool having a horizontally elongated mounting rod, the support comprises a horizontally elongated body having a support plate, a pair of horizontally aligned elongated presses having upper portions and lower and pivotally connected between the upper and lower portions of the body for movement relative to a pivot axis between positions held by press and released from press fastening, a plurality of mounting pins extending from each press and ending in enlarged heads that they have aligned articulation surfaces defining a horizontally extending pivot axis, the body has slots positioned to receive and articulate with the enlarged heads as the press is pivoted about the pivot axis, the slots include incremental width portions defining defined entries that admit step of the mounting pin portions agrandad in the slots and allow easy removal and connection of each press as it slides relative to the body to align the mounting pin portions with respective entries. 15.- A folding tool and a support for mounting the tool in a folder, the folder tool has a horizontally elongated mounting rod with a horizontally extending groove that provides a downward facing shoulder and a part coupling portion of work extending downwardly, the support comprises a horizontally elongated body having a support plate and a horizontally elongated press having upper and lower portions and pivotally connected between the upper and lower portions of the body for movement with respect to the pivot axis between a position held by press, wherein the mounting rod is captured between the lower portion of the press and the support plate and a released position of press fastening where the tool can be removed from the support, the press has a lip with an upwardly directed surface configured to engage and support the downwardly directed surface of the groove, the support includes a plurality of compressible elements between the press and the body, the elements are thus positioned and arranged to position the press in its released clamping position with the lip within the groove in the mounting rod to restrict accidental release of the tool from the support. 16. The support and tool according to claim 15, characterized in that the rod of the tool includes a bearing surface on the horizontal groove placed to rest against the press, whereby when the press is in its released clamping position by the press and the lower position of the tool is manually held and moved towards the support plate, the bearing surface of the tool rod forces the lower portion of the press to pivot away from the support plate with concurrent leakage from the lip of the tool. Press from the groove in the tool shank to allow removal of the tool. 17. The support for mounting a tool in the horizontally extending bed of a folder, the support comprises a horizontally elongated body having a support plate, a horizontally elongated press having upper and lower portions and connected pivotally between the portions upper and lower to the body, for movement with respect to a pivot axis between positions held by press and released by press fastening, the elongated body of the support includes an upwardly extending mounting plate having a slot spaced from its lower end. it extends horizontally with a shoulder directed downwards, the support includes a safety press for mounting it to the bed of a folder, the security press comprises an elongated body that is mounted on a folding bed and has a lip that extends horizontally defining an upwardly directed shoulder that engages the shoulder directed down the plate Mounting and restricting the tool holder against accidental fall of the safety press when the latter is loosened from the folder bed.