ES2296040T3 - DEVICE FOR MECHANICAL ASSEMBLY OR SIMILAR PROCEDURE. - Google Patents

Abstract

Device for mechanical assembly, stamping, punching, die-cutting, riveting or similar procedures, with two moving tool pieces (1, 2) with each other in a linear stroke movement in the direction of a stroke axis (3), of which a tool piece (2) is arranged in a pusher (6) guided along the axis of travel (3), and the tool parts (1, 2) act together at the end of the stroke movement, in a closing position, and the generation of the linear stroke movement is achieved with a thrust piece (8) arranged displaceably at an angle to the axis of the stroke, in which the end of an articulated lever (7) is articulated ) and another end of the articulated lever (7) is articulated in the pusher (6), likewise the articulated lever (7) is pivotally movable towards the stroke axis (3), and the closing position can be reached by a movement of the push piece je (8), likewise the thrust piece (8) can be moved from an initial position of the tool pieces (1, 2) to each other by means of a drive element (12) by means of a linearly movable drive (13) in the direction of the pushing piece (8), characterized in that a compressible spring (14) is arranged between the pushing piece (8) and the element (12) in an initial position of the device, from which position a stroke movement of the tool parts (1, 2), the spring is compressible through a movement of the pusher (6) from an initial position to an opening position opposite to a closing position along the stroke axis (3), in it the tool parts (1, 2) are spaced apart and the pusher (6) is held in the opening position by the force of the compressible spring spring (14) with the articulated lever (7), articulated through the neutral position.

Description

Device for mechanical assembly or Similar procedures

The present invention comprises a device for mechanical assembly, stamping, punching, die-cutting, riveting or similar procedures, according to the generic term of claim 1

Such devices are used in the union of metal sheets. In case of the so-called clinching or assembly mechanical deformation at the junction points of sheet metal parts a join form, under the effect of toolkits that they are formed respectively by a punch and a matrix, small Space formations, the assembly elements. The elements of assembly are formed by pushing the sheet material together of the horizontally superimposed sheet metal parts in an area of assembled out of a level of sheet metal and highlighting them.

A usable device is known for this, for example, from memory DE 43 35 318 A1. The memory of 43 35 318 A1 describes a machine tool that includes two tools, moveable together to act together. A first tool attached to a work piston performs a movement of career with respect to the second tool. The work plunger is driven in the direction of the race axis. To generate the career movement the work piston is provided with two articulated levers, each of them is articulated with its first end on the work plunger through a block slider housed movable in the work plunger so parallel to the axis of the race. Each of the other ends of the articulated lever is articulated in the work piston or in a counter support plunger. The counter support piston is movable in a career counterport that has the same career axis as the work plunger and is far from it. Levers articulated can be pivoted through a movement of the work piston on the stroke axis between the work piston and the race counter, so that a race is made.

At the same time it was proven as disadvantageous that with the machine tool cannot be done easily and quickly a adaptation to pieces of sheet of different thickness.

The objective of the present invention is therefore achieve a device for mechanical assembly or procedures similar, according to the generic term of claim 1, which enable flexible configuration of an opening measure between tools

This objective is achieved, according to the characteristics of claim 1.

In this way a device is obtained for the mechanical assembly or similar procedures, in which you can Enlarge a distance between two pieces of tool that can be move each other along the axis of the race. One of the pieces of tool is arranged in a pusher that can be moved against the drive from an initial position. A articulated chain consisting of the pusher and a lever articulated, articulated to it, and a movable thrust piece articulated to the articulated lever acts both in the direction of the driven stroke movement of both tool pieces a move with each other, as well as in a manual movement of the pusher with an increase in the distance of both pieces of tool from an initial position. Such a device can offer a comparatively large opening measure between the two tool parts, from which a spectrum of Expanded application with regard to tool areas To be worked. The increase in the opening measure offers the possibility to easily "thread" the components of building. In addition the tool piece is held with the pusher in a self-locking in the measurement position of major opening

The device has compact measurements and a low mass and therefore is preferably usable as a tool manual.

Because of the linear guide of the pieces of tool with each other these perform pure linear movements in an axis, other parts of a movement, such as paths in circular arc of tool pieces arranged in pieces of pincer, should not be taken into account.

Preferably the device is operated electromechanically, which provides opposition to the drive pneumatic or hydraulic a higher degree of performance and is also more silent, clean and simple when it comes to the technique of I send.

The configuration of a mechanism with elements Filleted with a spindle nut and a spindle, driven by a electromechanical drive, allows simple configuration linear drive. The spindle can extend until it enters in the thrust piece, so that the spindle and the thrust piece stabilize each other through a scroll ring between the thrust piece and the spindle arranged in a Free bearing secured against the spindle. In this way get a compact construction mode and a safe slide of the thrust piece with respect to the free bearing. It is also high power transmission possible by the application of a Spindle drive and articulated lever.

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Preferably the spindle nut is held non-rotationally and guided to a notch by the piece of push. This achieves a direct joint action and a Precision of fit between moving parts.

For guiding the spring to a notch configured in the push piece that receives the spring in state compressed, it is possible that the spring does not come out and can be reversibly compressed and downloaded again.

Preferably between the element and the spring a disk configured with smooth surfaces and which enables an independent material selection for the Spindle nut and spring, which do not touch directly.

By the application of a tubular handle, in which the element and the thrust piece are arranged perpendicular to the axis of the race, we are facing a compact device and easily operable in the tubular handle.

Preferably the device is configured by a tubular handle and a piece of frame attached to it, in which one of the tool pieces is arranged. In this way achieves a simple construction and high rigidity of the piece of frame, for an integration of the handle.

Advantageously there is a locking mechanism that prevents involuntary driving of the running movement from a position in which the fingers or the hand of the operator is You can find between the tool pieces. For this you can provide an electronics to determine the position of the piece of push. Preferably a safety switch is provided, with which only in the case of contact with the thrust piece is possible a stroke movement drive. In this way can prevent the drive depending on the position of the workpiece push.

Other conditioning of the invention is they follow from the following description and from the subclaims

The invention is detailed below from of an example of execution represented in the images attached.

Figure 1 shows schematically in a partial cut representation a side view of a mode of execution of a device according to the invention in a position initial.

Figure 2 shows schematically in a partial cut representation a side view of a mode of execution according to figure 1 in a closed position.

Figure 3 shows schematically in a partial cut representation a side view of a mode of execution according to figure 1 in an open position.

Figure 4 shows schematically in a partial cut representation a side view of a mode of execution according to figure 1.

Figure 5 shows schematically in a partial cut representation in perspective the mode of execution according to figure 1 in an initial position.

Figure 6 schematically shows a view above the execution mode according to figure 1 in a position initial.

Figure 7 shows schematically in a representation in partial cut a previous view according to the Figure 1 in an initial position.

Figure 8 schematically shows a view in plan according to figure 1.

Figures 1, 2 and 3 show a device for the mechanical assembly of horizontally superimposed sheets (not represented) by deformation with a tool kit composed of two tools 1, 2, for example by a punch and An array. Of the tool pieces 1, 2 at least the piece of tool 2 is movable with respect to tool part 1. The movement is a pure career movement and is performed so linear in the direction of a career axis 3. The pieces of tool 1, 2 act together, being displaced towards each other and they act on the plates that are between them (no represented). The tool parts 1, 2 are arranged, in the execution example represented, in tool carriers Four. Five.

The device is represented in the figures 1, 2 and 3 in different positions of tool parts 1, 2 or of the tool carriers 4, 5 with each other. Figure 1 shows the device in an initial position of the carriers of 4, 5 tools with each other. Both tool carriers 4, 5 They have a distance, the so-called opening measure. at the same time the distance between the tool carriers 4, 5 reaches several millimeters, preferably 3 to 10 mm., with greater preference about 6 mm.

The tool part 2 is arranged in a pusher 6. In the exemplary embodiment shown, the carrier of tools 5, in which the tool part is arranged 2, is screwed to the pusher 6. The pusher 6 is guided linearly in the direction of the axis of travel 3. On pusher 6 one end of an articulated lever is articulated 7. Other end of the articulated lever 7 is articulated in the piece of thrust 8 which is arranged perpendicular to the axis of travel 3. The articulation of the ends of the articulated lever 7 is performs through cylindrical pins 9, 10. The thrust piece 8 is guided in a tubular bridge 11, oriented at an angle towards the axis of career 3. In the exemplary embodiment shown, the bridge 11 runs perpendicular to the axis of travel 3. A movement of the thrust piece 8 in the direction of the pusher 6 produces that the articulated lever 7 can be pivoted widely towards the shaft of career 3 of the career movement. In this way the closing position shown in figure 2, in which the parts of tool 1, 2 act together when coming into contact with the plates (not shown).

For the movement of the thrust piece 8 an element 12 is arranged on the bridge 11, operable by a drive 13 and movable against the thrust piece 8. The movement of the driven element 12 is carried out linearly perpendicular to the axis of travel 3. Between element 12 and the part A compressible spring 14 and a disc 15 are arranged on bridge 11. Spring 14 configured as spring of spiral compression, is compressible from the initial position of the device, shown in figure 1. At least a part of the spring 14 is housed in a notch 16 of the thrust piece 8. The notch 16 is configured radially near the outer perimeter of the thrust piece 8.

Element 12 is held in a non- rotary on its outer perimeter by the thrust piece 8. To it a part of the thrust piece 8 between the element 12 and the bridge 11 form a stop on an axis of rotation perpendicular to the race axis 3 and is between the outer perimeter of the element 12 and the inner perimeter of the bridge 11. The piece of push 8 has a notch, in which they are arranged at least a part of the element 12 and the disc 15 movable by glide.

A career move of the piece of tool 2 is achieved by pushing element 12 against the spring 14, which is compressed in notch 16. After the spring 14 has been compressed in notch 16, disk 15 does contact with a stop of the thrust piece 8 in the direction of the offset of item 12 and disk 15. Other offset of element 12 with disk 15 leads to a displacement of the thrust piece 8. The force of the driven element 12 is then initiated through the thrust piece 8 and the articulated lever 7 enters pusher 6. Push piece 8, the articulated lever 7 and pusher 6 form an articulated chain. In figure 2 the device is represented in a closed position with the tool pieces 1, 2 approached, at the end of a race. The articulated lever 7 is pivoted widely in the direction of the career axis 3.

The end of the career movement is reached by an excitation of drive 13 of element 12 and can be selected by a default drive command 13. After reaching the closing position, that is, the position lower of the stroke, the actuation of element 12 is performed in the opposite direction and element 12 is moved back to the starting position, shown in figure 1, that is, in the initial position, whereby the thrust piece 8 and the disc 15 accompany through the force of the spring of spring 14 to item 12, and the device reaches its initial position. He pusher 6 ascends again in a career move, moving away from tool part 1.

The pusher 6 can be moved manually from the outside from the starting position shown in figure 1 to a position shown in figure 3, the so-called position opening. In manual movement of pusher 6 the Element 12 remains at rest. Pusher 6 movement makes pivot to the articulated lever 7 and move the thrust piece 8 in the direction of element 12. The articulated chain formed by pusher 6, articulated lever 7 and thrust piece 8 acts on both the address in the closed position as well as in the direction of The opening position. The spring 14 disposed between the element 12 and the thrust piece 8 is compressed upward between the element 12 and the thrust piece that moves, because of the manual movement of the pusher 6. In the compressed state of the spring 14 this is housed by the notch 16. After compression of the spring 14 the disc 15 abuts the thrust piece 8 and conforms the end of the movement for the thrust piece 8. The pusher 6 It cannot be moved further up.

In the opening position shown in the figure 3 during the movement of the pusher 6 the articulated lever 7 ha been moved up, above the point position dead of the articulated lever 7, that is, the articulated lever 7 forms a right angle with the axis of travel 3. The force of spring of the spring 14 acting on the articulated lever 7 a through the push piece 8 produces a pressure on the lever articulated 7 in the direction of the opening position. After what the device has been taken from the initial position to the position opening, the device is in a self-locking and it is held in the opening position by the force of the spring of the compressed spring 14. The opening measure between tool carriers 4, 5 can reach in the position of 20 mm opening. at 50 mm., preferably 35 mm. to 43 mm., with more preferably about 38 mm.

In the example of execution represented the element 12 is arranged as a spindle nut, arranged on a spindle 17. Spindle 17 is operable by drive 13. For this, drive 13 is configured as a synchronous motor. three-phase and placed on bridge 11. Clamping is carried out at through a ring 19, which hooks on bridge 11 through a cylindrical pin 20 and a threaded pin 21. Spindle 17 is fixed on the three-phase synchronous motor through a nut precision regulation 22. Spindle 17 is oriented centered on bridge 11 and housed by a fixed bearing 18. The bearing fixed 18 is configured as an axial ball bearing of angular contact The spindle protrudes to a notch 23 of the thrust piece 8. On the end side, spindle 17 is housed in the thrust piece 8 in the notch 23 by a free bearing 24. In this way the thrust piece 8 can be displaced axially with respect to the free bearing 24 and the spindle 17.

On the bridge 11 a piece of frame 25. The frame piece 25 is fixedly positioned tool carrier 4 presenting the tool part 1. The frame piece 25 is conditioned as an arc in C. Between the conditioned bridge as tubular handle 11 and frame piece 25 is provided a flat passage area 26, through which they can pass the parts of a hand or the fingers of an operator, to grab Safe mode to the tubular handle. In the area of the passage area 26, find an activation lever 27 that can act on a switch 28. Activation lever 27 is prestressed of switch 28 by a spring 29 and does not switch to switch 28, as long as the activation lever 27 is not activated by a operator. By actuation of the activation lever 27 is switched on switch 28 and the three-phase synchronous motor can drive spindle 17, whereby spindle nut 12 and disk 15 along the spindle shaft against spring 14 until it reaches the thrust piece 8. Then the axial force of the spindle nut 12 is actuated by the thrust piece 8 and the articulated lever 7 enters pusher 6. While the position initial of the tool carriers be consistent with each other the lower position of the career of the career movement is freely selectable by programming the remote control three-phase synchronous motor. After reaching the lower position of the stroke a change of direction of rotation of the motor is carried out three-phase synchronous and the pusher returns to the initial position.

To prevent tool parts 1, 2 they can exercise a career movement when the distance between the tool pieces 1, 2 is so large that the parts of a an operator's hand or fingers could be between them and as consequence of the career move could be tight, is provided a safety switch 30. The power switch safety 30 is actuated depending on the position of the piece of push 8 on jumper 11. Only if the power switch is operated safety 30 a drive of the movement of stroke of tool parts 1, 2 to the closed position. In the initial position the push piece 8 drives the switch Safety 30 conditioning as switching contact quick action A career movement of the tool pieces 1, 2. The opening measurement in position initial is so small that they cannot enter parts of the hand or fingers of an operator between tool pieces 1, 2.

During the pusher 6 stroke movement the thrust piece 8 drives the safety switch 30, of so that the race movement is not performed from the position initial to the closing position and back through the safety switch opening 30.

Meanwhile, pusher 6 has been pulled manually towards the opening position according to figure 3, the Push piece 8 no longer actuates safety switch 30 of so that a drive of the movement of stroke of tool parts 1, 2 towards the position of closing.

Figure 4 shows a representation in device perspective in a partial cut view.

Figure 5 shows a representation in detail in a partial court representation in regards to the drive junction 13 configured as a synchronous motor three-phase and bridge 11. Clamping is carried out by means of a threaded joint through screw 33.

Figures 6 and 7 are front views of the device according to figure 1 in an initial position of the device, also Figure 7 is a representation in section partial along the cutting line 34 marked in Figure 1. In figure 6 the linear guide of the pusher 6 can be recognized, formed between the frame piece 25 and two slats 31, 32.

Figure 8 shows the device according to the Figure 1 from above.

The three-phase synchronous motor is driven electronically Data communication is carried out by a communication line between the arc of electromechanical clinching and the command The engine is conditioned with a measuring system of position, that way it can be determined, through a specification of nominal position value, the amount of Spindle revolutions, and thereby the position of the pusher 6. The nominal position value specifications are the position upper pusher, lower pusher position and a reference route that is carried out in the first setting in running or in case of a failure, for example, after a power outage electric

Through the excitation of the synchronous motor three-phase value specifications are also possible nominal speed for movements. The movements are pusher movements from the initial position towards the closing position, pusher displacements from the position of Close to the initial position and the reference path.

Claims (12)

1. Device for mechanical assembly, stamping, punching, die-cutting, riveting or similar procedures, with two moving tool pieces (1, 2) with each other in a linear stroke movement in the direction of a stroke axis (3), of which a tool piece (2) is arranged in a pusher (6) guided along the axis of travel (3), and the tool parts (1, 2) act together at the end of the stroke movement , in a closed position, and the generation of the linear stroke movement is achieved with a thrust piece (8) arranged displaceably at an angle to the axis of travel, in which the end of an articulated lever is articulated (7) and another end of the articulated lever (7) is articulated in the pusher (6), likewise the articulated lever (7) is pivotally movable towards the stroke axis (3), and the closing position is can reach by a movement of the piece of thrust (8), likewise the thrust piece (8) can be moved from an initial position of the tool pieces (1, 2) to each other by means of a drive element (12) by means of a linearly movable drive (13) in the direction of the pushing piece (8), characterized in that a compressible spring (14) is arranged between the pushing piece (8) and the element (12) in an initial position of the device, from which position a stroke movement of the tool parts (1, 2), the spring is compressible through a movement of the pusher (6) from an initial position to an opening position opposite to a closing position along the stroke axis (3), in it the tool parts (1, 2) are spaced apart and the pusher (6) is held in the opening position by the force of the compressible spring spring (14) with the articulated lever (7), articulated through the neutral position. 2. Device according to claim 1, characterized in that the thrust piece (8) and the element (12) are movable perpendicular to the axis of travel (3). 3. Device according to claim 1 or 2, characterized in that the drive (13) is a three-phase synchronous motor. Device according to claim 3, characterized in that the element (12) is a fixed spindle nut on a spindle (17) operable by the drive (13), arranged in a movable manner. 5. Device according to claim 4, characterized in that the spindle (17) extends until it enters a notch (23) of the thrust piece (8), and the spindle (17) is housed in a free bearing (24) on the thrust piece (8), in which a displacement ring (31) is fixed to move the thrust piece (8) against the free roller (24). Device according to claim 4 or 5, characterized in that the spindle nut is at least partially surrounded around its circumference by the thrust piece (8). Device according to one of the claims 1 to 6, characterized in that the spring (14) can be accommodated at least partially in a notch (16) of the thrust piece (8). Device according to one of claims 1 to 7, characterized in that a disc (15) is at least partially received by the thrust piece (8) between the spring (14) and the element (12). 9. Device according to claims 1 to 8, characterized in that the element (12) and the thrust piece (8) are arranged in a bridge (11) configured as a tubular handle, perpendicular to the axis of travel (3). A device according to claim 9, characterized in that the tubular handle is fixed in a frame piece (25), in which the tool part (1) is fixedly arranged and a passage area (26) is configured. for taking at least a part of a hand between the tubular handle and the frame piece (25). Device according to one of claims 1 to 10, characterized in that depending on the position of the thrust piece (8) an electronic locking mechanism can be triggered. 12. Device according to claim 11, characterized in that the locking mechanism is activatable through a safety switch (30), if the thrust piece (8) does not have a contact with the safety switch (30).