WO2014079763A1

WO2014079763A1 - Device for transporting and/or storing a circuit board and forming system

Info

Publication number: WO2014079763A1
Application number: PCT/EP2013/073803
Authority: WO
Inventors: Thomas Menzel; Dietmar Schöllhammer
Original assignee: Schuler Pressen Gmbh
Priority date: 2012-11-22
Filing date: 2013-11-14
Publication date: 2014-05-30
Also published as: DE102012111293B3

Abstract

Tooling carriers are widely used to transport and form circuit boards (125, 126, 127). Here, the circuit board (125, 126, 127) is deformed by the application of pressure and is put down at a different location. This procedure has some disadvantages. The simultaneous forming and transporting of the circuit board (125, 126, 127) is time- and energy-intensive due to the lifting up and putting down (125, 126, 127) of the circuit board. Therefore, the invention proposes a device (101) for transporting and/or storing a circuit board (125, 126, 127), comprising a circuit board holder (107, 307) and a first, discrete, distance-changing setting element, the circuit board holder having a resting plane (305, 405), the device being characterized in that the setting element is arranged below the resting plane (305, 405) and that the setting element passes through the resting plane (305, 405) when the setting element is actuated, such that a curvature (227) is applied to the stored or transported circuit board (125, 126, 127).

Description

Device for transporting and / or storing a circuit board and forming system

The invention relates to a device for transporting and / or storing a circuit board, comprising a board receptacle and a first, discrete, distance-changing adjusting element, wherein the board receptacle has a support plane and a forming system with a forming device.

In DE 42 27 652 C2 discloses a method for inserting boards in an existing of upper and lower tool, driven by a press drawing tool, wherein a board removed from a base and with the drawing tool open position defined on a contact surface of the Unterwerkzeuges is placed, characterized in that the board before or when placed on the contact surface forcibly preformed in a shape approximating the shape of the contact surface and secured in this state by tool-integrated adhesive or holding elements on the lower contact surface until closing of the drawing tool or is fixed.

[03] The disadvantage is that the simultaneous bulging and transporting the board time and energy-intensive, the drawing tool, in the present case also called tooling carrier, thus has a higher mass due to attached control elements. In addition, the tooling carrier is maintenance and repair-intensive, as a variety of components - such as Control elements - are installed. Furthermore, tooling carriers according to the prior art have larger designs, since the adjusting elements must additionally be arranged in and on the tooling carrier. This results in that the output quantity is reduced.

[04] The minimum radius of a protrusion of a board, which can be impressed by means of known Toolingträger the board is limited by the number and width of the control elements of the Tooling. Thus, strong bulges or complex bulges can be imposed only limited to the board.

[05] Another disadvantage is that embossment of the camber for downstream processing in a downstream press is insufficient because more complex camber shapes are limited or unrealizable.

In DE 11 20 414 a method for bulging flat or bulging sheet metal, in particular boiler bottom, by puffing supported at the edge against shrinkage and in particular pairwise mirror-image to a hollow body stapled together, the extent of the curvature of the curvature through about the floor area distributed, pinned auxiliary sheets is directed.

[07] The disadvantage of the puffing up of the soil is only a uniform, continuous curvature, which makes it more difficult to provide complex bulges. [08] The object of the invention is to improve the state of the art.

The object is achieved by a device for transporting and / or storing a circuit board, with a board receptacle and a first, discrete, distance-changing control element, wherein the board receptacle has a support plane, wherein the actuating element is arranged below the support plane and upon actuation of the adjusting element, the adjusting element or a board area contacted with the adjusting element passes through the supporting plane, so that a curvature is impressed on the mounted or transported board.

[10] Thus, a device can be provided, in which an associated tooling carrier is formed without a control element. As a result, smaller designs and / or lighter tooling carriers can be used. In addition, the output of processed, in particular pressed boards can be increased.

Another advantage is that the detection of the parts position is improved before receiving the board. In addition, the insertion of the board can be optimized in a tool.

Due to the low mass and the optimized design of the Toolingträgers traversing speed of the

Tooling carrier increases and / or its energy requirements are reduced.

[13] The following terminology is explained: [14] "Transporting" describes the process by which the board is transported from one place to another, for example by means of a conveyor belt and / or rotating casters.

In contrast or in addition to a "storage" includes a storage of the board without a change of location.

[16] A "board", also called Blechabwicklung, comprises blanks, which are converted by forming into a target shape, in particular sheets of metal and / or plastic are included, which form a reversible reversible or irreversible due to its own weight The board has a metal sheet which is cut from a preliminary product for further processing.The boards present in particular have metals, such as stainless steel, the metal content is preferably higher than 50%, but plastic boards or circuit boards made of matrix materials are also included.

[17] A "board area" is a section or a delimited area of the board.

[18] A "board receptacle" describes a device of the device for transporting and / or storing the board on which the board can be stored and transported, and in its simplest form, the board receptacle can be formed by the conveyor belts or rollers In this case, clamping elements can be provided which fix the circuit board laterally and / or orthogonally thereto. [19] A "control element" comprises a controllable or controllable component which, controlled or regulated, performs a change of position In a simple implementation, the control element has a piston mounted in a cylinder which is moved pneumatically, hydraulically or electrically by means of an engine there is a change in location of the piston.

In particular, a head of the piston has various shapes. In particular, the head is spherical, pointed or edge-shaped. This is particularly advantageous because the head when pressing the actuator physically contact the board at a contact positions in contact and the head shape optimized Bölbungsaufprägung can be implemented.

[21] Also, the head may have a coupling element which forms a temporary fixed connection with the board. Thus, the coupling element is in particular a suction cup or a connectable electromagnet.

[22] In the present case, "discrete adjusting elements" comprise adjusting elements acting on individual points of the board, In particular punctiform, in particular by the pointed head of the piston of the adjusting element, linear, in particular by the angularly designed head of the piston of the actuating element, and circular, in particular by the spherically configured head of the piston of the actuating element, contact positions of the board comprises. In the simplest case, the receiving plane corresponds to an imaginary horizontal plane, and curved planes are also included.

[24] A "passage" is given in particular when the actuator or the board area is "cut" (mathematically) by the support plane.

Reversible in this sense means that after removal of the force causing the curvature, the board will return to its original shape, including partially reversible deformations In particular, when the curved plate has a restoring force inherent in the plate, curvature includes the mathematical descriptions for curvature or even a kink.

In one embodiment, the board support stored the board free, so that the curvature is impressed by an interaction of the actuator and the gravitation of the board.

Due to the free storage of the board can be impressed without additional terminals a curvature.

[28] It is also advantageous that the free storage allows aligning the board before buckling. this will in particular caused by a two-dimensional displacement, in particular on a conveyor belt.

[29] Whereas in the case of tooling carriers, which imprint a curvature on a board, tensile and compressive forces must cooperate, in the present case only compressive forces can be used in conjunction with the existing gravitation, in the present case the pressure forces being impressed by the setting elements of the board.

In order to impart further or complex curvatures to the printed circuit board, it is possible to use further discrete adjusting elements which change the distance, which in particular form an actuating element matrix.

[31] Through the interaction of two and / or other discrete, distance-changing control elements, the process of imprinting a curvature can be optimized. Furthermore, a board can be better adapted to a (press) tool.

[32] A "control element matrix" is an arrangement of a plurality of control elements, with a certain, spatial distance from one another, wherein each control element is individually controllable and regulatable, in particular the control elements are arranged in rows and columns.

[33] In one embodiment, the board receptacle on a conveyor belt or a plurality of spaced-apart conveyor belts and / or a roller or a plurality of spaced-apart rollers on. Thus, the board and other boards with defined, adjustable speed and defined and adjustable distance can be transported to each other. In particular, the conveyor belt and / or the roller can lie in the receiving plane and have recesses. In a simple implementation can pass through the recesses of one of the adjusting elements and / or more adjusting elements through the receiving plane.

[35] The following terminology is explained:

[36] A "conveyor belt" comprises a continuous conveyor for transporting a board, the conveyor belt transporting the board at a defined, variable speed, in particular the conveyor belt may be fixed and / or pivoted to the ground in a simple manner continuous transport stream.

[37] A "roller" is a roller which serves to transport the board, whereby the roller rotates at a certain speed and thus transports a resting board.

[38] In a further embodiment, the device for transporting and / or storing comprises a centering station and / or a cleaning device and / or an oiling device.

[39] Thus, in particular, a two-dimensional displacement in the receiving plane by the centering before the actuator matrix, are made possible, whereby a defined curvature impact can be ensured. In particular, the centering station can be implemented by displaceable templates, which move by contact with the board these within the receiving plane.

[40] The cleaning device can be used to clean the board, which minimizes dirt and contamination in particular.

[41] Furthermore, the pre-treatment of the board with oil can be carried out by the loading device. In particular, the Beöleinrichtung the board evenly and surface wet with oil.

[42] The following terminology is explained:

[43] A "centering station" is a device for moving the board to the desired position of the receiving plane.

[44] A "cleaning device" is a device for cleaning the board, wherein the board is transported in particular by the cleaning device.

[45] An "oiling device" is a device for oiling the printed circuit board, the printed circuit board being transported in particular through the oiling device.

In addition, the object is achieved by a forming system with a forming device, a previously described device for transporting and / or storing a circuit board and a loading device, which is configured such that the board is received on the device side and inserted into the forming device.

The insertion in an optimal orientation of the board in a forming device, in particular a press by an insertion device, is advantageous for the optimized forming of the board.

[48] The following terminology is explained:

[49] A "forming device" is a device for forming the board, in particular presses and / or deep-drawing devices are included.

In particular, a "loading device" transports a board from the device for transporting and / or storing it to the forming device .This can be carried out in such a way that the loading device travels over the board, which then contacts the board by means of the receiving element (in the present case suction cups) and then raises, then moves over the tool of a press and inserts the board into the tool.

[51] In a further embodiment, the insertion device has a receiving element. Thus, a board can be contacted optimized.

[52] A "receiving element" is in particular a device for receiving the curved plate, wherein the Curvature of the board is obtained. In its simplest form, the receiving element is a suction cup or a connectable electromagnet.

[53] In order to adapt the receiving elements to the bulges of the board, the receiving element can

Include contacting element, which has a protrusion. This ensures a secure "hold" of the board at the insertion device.

[54] A "contacting element" is a device of the receiving element for fastening the board to the insertion device

Contacting element designed such that it adapts to the curvature of the board. The receiving element is in particular a suction cup or a connectable electromagnet.

[55] In a further embodiment, the insertion device has further receiving elements, which are mutually adjustable to each other, so that an additional curvature of the board is aufprägbar.

[56] Thus, prior art inserters can be combined with existing buckling techniques.

In order to transform boards, the forming device has a sinker (deep drawing) press.

[58] In the following, the invention will be explained with reference to exemplary embodiments. Show it a schematic representation of a press and a conveyor line with an actuator matrix and a washer in a plan view from above,

1a) in a side view, a schematic representation of a press and a conveying line with an actuating element matrix, a centering unit and an oiling plant in a plan view from above,

Figure 2a) in a side view, a schematic representation of a

Section of a conveying line with rollers and illustrated horizontal support plane,

Representation of Figure 3a) with a circuit board, a schematic representation of a

Section of a conveyor with rollers and illustrated curved support plane,

Representation of Figure 4a) with a circuit board, a schematic representation of a

Detail of a conveyor with Casters and illustrated curved support plane, wherein a circuit board is pressurized from below and

Figure 5b) is a schematic representation of a

Detail of a conveyor with

Castors and illustrated curved

Support level, with a board is acted upon from below with train.

In a first alternative, a conveyor line 101 parallel to each other arranged conveyor belts 107 of width 10cm. The conveyor belts 107 are spaced from each other, wherein the distance 109 has a value of 7cm.

[60] At the end of the conveyor line 101, an actuator matrix 113 is arranged. The actuator matrix 113 is formed by a plurality of actuators 119, 116, 121, which are arranged in rows 117 and columns 115.

[61] To clean the blanks, a washer 105 is attached to the conveyor line 101 in front of the control element matrix 113.

[62] The conveying line 101 is at the end of a press 103 associated with a pressing tool (not shown).

[63] A tooling carrier (not shown) is provided between the conveyor line 101 and the press 103. [64] In the following it will be explained how a board 125 is transported to the press.

[65] In a first step, the board 125 is placed on the conveyor line 101. The conveyor line 101 transports the board 125 to the press 103. The board 125 passes through the washing station 105, which cleans the board 125 with organic solvents in order to remove, for example, fat residues.

[66] Subsequently, the board 125 is moved to above the control element matrix 113. Then the individual conveyor belts 111 are locked, so that the board

125 is permanently located.

[67] In order to apply two bulges to the board 125, the positioning elements 121 are moved upwards 123. In this way, the adjusting elements 121 come into contact with the underside of the circuit board 125 and thus raise the circuit board 125 locally. This causes the board 125 bulges

126th

[68] After the adjusting elements 121 have reached their final position, the tooling carrier with ventilated suction cups picks up the curved plate 126, lifts it, moves above the press and places the curved plate 126 in the pressing tool. The tooling carrier leaves this loading position, so that the press can complete the pressing. After pressing, the tooling carrier picks up the molded workpiece and places it. [69] In the second alternative, an oiling plant 106 and a centering unit 231 are arranged along a conveying line 101. The conveyor line 101 comprises conveyor belts 107 of width 30 cm, which are positioned at a distance 109 of 4 cm to each other.

[70] At the end of the conveyor line 101, an actuator matrix 113 is positioned

Stellelementematrix 113 is, as shown analogously in Fig. 1, formed by a plurality of adjusting elements 119.

[71] The oiling plant 106 is mounted in front of the control element matrix 113. The conveyor line 101 is at the end of a press 103 associated with a pressing tool (not shown). Between conveyor line 101 and press 103, a tooling carrier (not shown) is provided.

[72] In the following it is explained how a board 229 is transported to the press.

[73] In a first step, the board 229 is deposited on the conveyor line 101. The conveyor line 101 transports the board 229 in the direction of the press 103. In this case, the board 229 passes through the oiling plant 106, which wets the board 229 with a chlorine-free and mineral oil-free oil.

Subsequently, the board 229 is transported to the centering unit 231, which shifts the board 229 into defined board position 230 by contact by means of templates (not shown). Subsequently, the board 230 is moved to above the control element matrix 113. Then the individual conveyor belts 107 are stopped, so that the board 230 is permanently located.

[76] In order to apply two bumps 227 to the board 230, the adjusting elements 119 are moved upwards 223. In this way, the adjusting elements 119 come into contact with the underside of the board 230 and thus raise the board 230 locally. This causes the board 230 to buckle 227.

[77] After the adjusting elements 119 have reached their final position, the tooling carrier with connectable electromagnets picks up the curved plate 126, lifts it, moves above the press and places the curved plate 126 in the pressing tool.

[78] The tooling carrier leaves this loading position so that the press can complete the pressing. After pressing, the tooling carrier picks up the molded workpiece and places it.

[79] In the following, the stamping of the dome will be explained by way of example using FIGS. 5a) and b).

[80] In a first alternative, a circuit board 126 rests on rollers 307. The rollers 307 form a support plane 305, which practically coincides with the bottom of the board 126. In addition, between the Casters an actuator with a cylinder 313 and a piston 311 arranged.

[81] A board 126 is moved over the transport rollers 307. Subsequently, the piston 311 of the

Move actuator vertically upwards. As soon as the

Plunger 311 contacted the board 126 at the level of the support plane 305, the board 126 is impressed a punctual pressure. This pressure buckles the board 126.

[82] In a second alternative, the board 127 rests on rollers 307. The rollers 307 form a support plane 305, which practically coincides with the bottom of the board 127. In addition, between the rollers an actuator with a cylinder 313 and a piston 311 is arranged, wherein the piston has a ventilated suction cup.

[83] The board 127 is moved over the transport rollers 307. Subsequently, the piston 311 of the actuating element is moved vertically upwards. As soon as the piston 311 contacts the circuit board 127 at the level of the support plane 305, the suction cup sucks against the lower surface of the circuit board 127. Subsequently, the piston 311 is moved in the opposite direction, whereby the board 127 is impressed a curvature.

[84] In the following, alternative embodiments of the conveyor line 301, 401 will be explained.

[85] A conveying line 301 has rollers 307 arranged horizontally. Above the rollers 307 is an (imaginary) horizontal support plane 305 given. When the board 125 is resting, the underside of the board 125 corresponds to the support plane 305.

[86] Alternatively, a curved (imaginary) support plane 405 can be given. The rollers 407 are arranged on a circular segment. Also in the case of the curved support plane 405, an actuator between two rollers 407 may be arranged.

Reference sign list

101 conveyor line

103 Press

105 car wash

106 Bowling

107 conveyor belts

109 Distance of the conveyor belts

111 single conveyor belt

113 control element matrix

115 columns of the control element matrix

116 control element

117 rows of actuator matrix 119 actuator (not connected)

121 actuator with displaced piston

123 travel direction

125 board

126 curved plate

127 curved plate

227 vaulting

229 Piatin position in front of the Beelen

230 board position after centering

231 Board position before centering 301 Conveyor section

305 horizontal support plane

307 transport rollers / rollers

311 pressure piston

312 pulling piston

313 cylinders

401 conveyor section

405 curved support plane

407 transport rollers / rollers

Claims

Claims:

1. Device (101) for transporting and / or storing a circuit board (125, 126, 127), with a board receptacle (107, 307) and a first, discrete, distance-changing control element, wherein the board receptacle has a support plane (305, 405) , characterized in that the adjusting element is arranged below the support plane and that upon actuation of the actuating element, the actuating element or contacted with the actuator board area passes through the support plane, so that the stored or transported board a curvature (227) is impressed.

2. Apparatus according to claim 1, characterized in that the board support stores the board freely, so that the curvature is impressed by an interaction of the actuating element and the gravitation of the board.

3. Device according to one of the preceding claims, characterized by further discrete, distance-changing adjusting elements, which in particular form a control element matrix (113).

4. Device according to one of the preceding claims, characterized in that the board receiving a conveyor belt (111) or a plurality of spaced apart (109) having conveyor belts and / or a roller (307) or a plurality of spaced-apart rollers has.

5. Device according to one of the preceding claims, characterized by a centering station (230) and / or a cleaning device (105) and / or an oiling device (106). Forming system comprising a forming device (103), a device (101) according to one of the preceding claims and an insertion device, which is designed such that the board is received on the device side and inserted into the forming device.

Forming system according to claim 6, characterized in that the insertion device has a receiving element.

Forming system according to claim 6, characterized in that the receiving element has a contacting element, which has a protrusion, so that a bulging board is accommodated adapted.

Forming system according to one of claims 7 to 8, characterized in that the insertion device has further receiving elements which are mutually spaced adjustable, so that an additional curvature of the board can be impressed.

Forming system according to one of claims 6 to 9, characterized in that the forming device has a platinum press.