FI108854B - Arrangement for the cutting of plastic material - Google Patents

Description

108854

Hardware for cutting sheet material

The invention relates to an apparatus for cutting sheet material, in which the sheet body is separated from the blank by cutting machining, wherein the apparatus 5 comprises: an apparatus body on which a cutting and transport plane is disposed on which the blank is arranged to be moved in the production process 10; a cutting unit, an ejection unit with an optionally disposed piece of cut sheet being disposed below the cutting and transport plane, a cutting unit, and a 15 transfer unit for transferring the cut sheet member to the transport portion of the cutting and transport plane.

An apparatus of the above type is known from US-5,317,516, which discloses a method and apparatus for separating sheet pieces from a preform by cutting. The solution according to the publication is based on the fact that the small pieces or the so-called "blank" are separated from the blank. the scrap pieces are removed using the stripping unit below the cutting and transport plane, while the larger sheet pieces are moved to the cut; transport level on top of the production process. In such an advantageous apparatus and method, especially when applied specifically to laser, plasma, water jet and / or incineration, problems may be encountered in particular in separating the sheet pieces from the sheet as well as the cut sheet, which to a certain size range, moving forward at cut-30 moon and transport level. In the abovementioned cutting methods, the cutting work is normally carried out with the cutting unit stationary in relation to the hardware body and the cutting and transport plane as well as the outer parts acting as a coordinate table, whereby the sheet blank: * ·: fixed at its edges 35 coordinate beam for cutting movements. Then '. the slab is cut by moving the coordinate beam and thus the le! ! pre-program the disc piece according to the predetermined programming

I Il I I

j 108854 2 to the desired shape. It is very difficult, and in many cases even impossible, in connection with the discharge unit, in particular its planar surface, to use the above-mentioned cutting methods to form elements moving the plate body after cutting in the cutting and transport plane. However, as mentioned earlier, a certain so-called. a medium-sized piece of sheet which due to its size and / or shape has to be moved forward at the cutting and transporting level and not suitable for removal through the removal unit below the cutting level has been difficult and reducing production capacity in known equipment 10 because transporting means at the transporting level Thus, the transfer of such plate pieces to the cutting and transport plane has to be prepared manually or their production has to be arranged by other equipment.

15

In the prior art apparatus for cutting sheet material there is no solution to the problem presented.

It is an object of the present invention to provide an apparatus for disc mat 20 cut-off which can overcome the above problems to the greatest extent possible and thereby raise the state of the art. To achieve these purposes, the apparatus of the invention is essentially characterized in that the transfer unit is disposed: substantially on the discharge unit, and that the transfer unit is provided with transfer means arranged to apply the transfer effect to the upper surface of the cut sheet. Thus, the above solution allows that all plate sizes intended to be moved along the cutting and trolley conveyor part in the production process, which are substantially cut in connection with the removal unit, can be moved from the removal unit to the transport part so that is able to carry out any subsequent transfers necessary for the production process.

It is therefore an object of the apparatus according to the invention to accelerate and certify the smoothness of the automated sheet cutting process and to · · · ·: create the freedom to select the · · · · ·: 35 sheet sizes produced in the sheet cutting process.

108854 3

The appended dependent claims disclose some preferred embodiments of the apparatus of the invention. The following description further illustrates one embodiment of the apparatus of the invention with reference to the accompanying drawings. In the drawings 5, Figure 1 shows a side view of an embodiment of the apparatus according to the invention, and | Figures 2 to 4 show stepwise treatment of a sheet blank and a sheet body 10 in the apparatus of the invention utilizing the transfer unit of the invention.

Referring to the drawings, the apparatus according to the invention comprises an apparatus body 1 (a so-called lower frame) on which a cutting and transporting plane 2 is placed 2. A plate blank 3 (Figs. 2-4) is placed on a cutting and transporting plane 2. The cut sheet piece 4 (Figures 3 and 4) is moved forward along the cutting and transport plane 2 during the production process. The apparatus further comprises an ejection unit 5 whereby the cut sheet member 4 is optionally arranged to be removed below the cutting and transport plane 20 2, from where it is transferred either to the (arrow JK) wreck unit or, in the case of and conveyors are not shown in the drawings).

With particular reference to Figures 2 to 4, means 6 are provided within the apparatus for transferring the blank 3 to the intersection. The members comprise a coordinate plane adjustable in the X-Y plane (corresponding to the direction of the main plane of the cutting and transport plane 2). A beam 6b is disposed on the conductors 6a to move in the Y-coordinate plane. The claws 6c are arranged to be movable in the longitudinal direction of the beam 6b, i.e. the nose of the X-mouth 30, which are arranged to engage. to the edge of the blank 3 for moving the blank in the X-Y coordinate plane. There is a programming feature attached to the hardware; '; a unit (not shown) in which, by means of a pre-programmed program, the elements 6 are moved by the means 6: · · ·: to move the blank 3 during the cutting operation so that the point to be cut is the cutting element 7 of the cutting unit; : at 7a.

108854 4

In the embodiment shown in the drawings, the cutting unit 7 is a laser cutting unit, but it is understood that similar cutting methods for locally cutting at the respective site are also applicable to the apparatus of the invention, such as plasma, water jet and / or incineration methods.

According to the invention, a transfer unit 8 is provided in connection with the apparatus for moving the cut plate piece to the transport part 2a of the cutting and transport plane 2. As can be seen in particular from Fig. 1, the transfer unit 8 is disposed on the discharge unit 5, wherein the transfer unit 8 is arranged to apply a transfer effect to the upper surface of the cut sheet body 4 after cutting by transfer means 9 associated with transfer unit 8. the outer surface is arranged to press on the upper surface of the plate body 4 during operation of the transfer unit 8 and to transfer the plate body 4 cut by the rotational action of the cylindrical rollers 9 to the transport part 2a of the cutting and transport plane 2. In the transport section 2a, an effective transferring member transferring the plate body After this initial transfer, the force 20 is fully capable of affecting the displacement of the earth plate body 4 when it is over the transport portion 2a.

The transfer unit 8 is articulated by a hinge 10 to the hardware body 1 (so-called upper body) and the transfer unit 8 comprises a plate-like sub-body 11 positioned on the hinge 10 substantially horizontally above the cutting and transport plane 2 and the exit unit 5. on. Further, an actuator 12 is disposed in connection with the transfer unit 8, which at its first end is fixed to the subframe 11 and at its second end to the hardware body 1. The actuator 12, preferably a cylinder-piston assembly 30 operating on gaseous pressure medium cylindrical rolls acting vertically around the pivot 9 of the transfer unit 9 of the transfer unit 8. Between the piston rod of the actuator 12 and the subframe 11, a compression spring 13 or the like is provided to compensate for the vertical forces that may be generated in the displacement of the cut sheet body: ···: 35:

• · 108854 5

In the embodiment shown, there are two displacement members 9, i.e. cylindrical rollers, located below the subframe 11 in a row such that their rotational axes are parallel to the displacement direction of the transport part 2a of the cutting and transport plane 2. Hereby, the transfer directions (arrow SS) of the cutting and transport plane 2 and the transfer unit 5 are converged so that both the cutting and transport plane 2 and the transfer unit move the plate body 4 after cutting in the same direction.

It will be appreciated that the outer surface of the transfer members 9, i.e. the cylindrical rollers, has been treated with a kit-10 coefficient enhancing and elastic coating, such as a rubber compound coating. The actuator for the cylindrical rollers, e.g., the electric motor, is located e.g. in the second roller roller and there is a belt drive between the roller rollers. The roller rollers are adapted to operate in accordance with the overall programming of the operation of the apparatus so that when moving the transferring means 9 of the transfer unit 8 to the upper surface of the cut sheet body 4, the actuating means 9, i.e. the cylindrical rollers, is actuated. The actuator for the roller rollers is not shown in the drawings.

In the apparatus according to the invention, the transporting part 2a of the cutting and conveying plane 2 consists essentially of a plurality of cylindrical rollers 13 arranged in a horizontal plane, rotatable about its longitudinal axis by actuators 14, e.g. with transfer means 9, i.e. cylindrical rollers. If necessary, the metal rollers may be coated with, for example, a rubber alloy coating to improve the frictional properties.

• · · • · * * * * * · • ·

Advantageously, as shown in the drawings, the cutting and conveying plane 2: ·, consists of a roller-like so-called roller conveyor structure. bristle I · · 30 of cylinders having a cylindrical bristle body 15 mounted substantially parallel to the periphery of the bristle body 15 and extending radially from the bristle body 15 radially extending from the bristle body 15 and adapted to support the plate body · with the insert 2a stationary and which move the plate body 35 35 forward in the manufacturing process by frictionally gripping the underside of the plate body when the brush cylinders are rotated together by actuators 14

M · M

in the same direction.

»I

t · I * »* • t 108854 6

The cutting and conveying plane 2 also has a normal bristle table part 2b which is disposed mainly on the side of the conveying part 2a in the direction of transfer. The brush table portion 2b has a horizontal bottom portion 2b1 which protrudes | 5 vertical bristle bunches 2b2. The displacement of the plate blank 3 takes place substantially over the brush table portion 2b. Further, on the side 17 of the plate-shaped and substantially parallel to the main plane of the cutting and conveying plane 2, the outlet unit 5 has a smaller second conveying section 2c which, like the first conveying section 2a, consists of rotating brush cylinders. The second conveying member 2c is specifically intended to assist in the transfer of large cut plates.

The width of the surface portion 17 of the outlet unit 5, together with the width of the second transport portion 2c, corresponds to the width of the first transport portion 2a in a direction perpendicular to the displacement-direction SS. The rectangular or square surface portion 17 of the outlet unit 5 is pivotally rotated with the horizontal joint 18 by an actuator 19 actuated by a gaseous pressure medium. sealed in the vacuum chamber 21 by a bellows 23 disposed between the lower surface of the surface portion 17 and the vacuum chamber 21 and surrounding the opening 20a of the vacuum chamber 20.

• · · \ 5: The surface portion 17 of the exhaust unit 5 is so-called. roller table structure, whereby the upper part of the surface portion '• .. S 25 17 protrudes into the surface portion 17 partially submerged rollers.

. The surface portion 17 is arranged, prior to rotation about the articulation 18, to perform a horizontal downward movement * ♦: *. T <between the discharge unit 5 and the apparatus body 1 in an effective vertical direction. with a short stroke actuator 26, such as a cylindrical piston assembly actuated by a gaseous pressure medium, disposed within the compartment. to the nonarear conductor 26a.

As shown in particular in Figure 1, in the apparatus, near the cutting unit 7: at a density: directly or indirectly attached to the apparatus body 1:: ··: 35 (in the transfer unit 8), a press section 27 consisting of a vertical actuator 28 and a contact pad mounted on the end of its movable part, such as a cushion made of a rubber-alloy material * · * * I * 108854 7 which applies a force-acting cut-out of the actuator 28 (gas-pressurized cylinder-piston assembly) 4 on the upper surface. The combined vertical downward movement of the surface portion 17 and the press portion 27 may, if necessary, remove (or facilitate the removal) 5 in cases where the cut sheet body 4 is, for example, stuck to the plate blank 3 by the wedging effect.

In the embodiment shown in the drawings (Figs. 2 to 4), the apparatus has an optional automatic sheeting center 24, whereby further sheeting can be performed prior to cutting, if necessary. The plate working center 24 has its own brush table structure 25.

According to Figures 2-4, in step 2 of Fig. 2, the blank 3 is supported by the members 6 either for direct cutting or for example in sheet metal machining center 24, which is substantially directed to the area of the sheet blank 3 from which the sheet body 4 is to be cut. In Fig. 3, the blank 3 is in the cutting phase, whereby the blank 4 is currently being cut, while the members 6 are guiding the transfers of the blank according to the cutting program. As can be seen in Figure 3, the plate body 4 is problematic precisely because only part of it is in communication with the transport portion 2a, whereby this plate size requires the use of the transfer unit 8 in order to transfer to the transport portion 2a as shown in Figure 4.

* · '*; In the embodiment shown, the conveyor part 2a is made up of brush cylinders 15, 16, 25, but a functionally equivalent brush conveyor structure is also an nS-brush belt structure consisting of a plurality of endless belts preferably, the surface area of the upper surface of the transport portion 2a. The belts are provided with bristle bundles protruding from the belts 30 to provide a movable brush mat as shown in the drawings. Preferably, the brush belt has ... two drive shafts located at the ends of the conveyor part 2a. Between the transport axles, at least one of which has a drive, there is e.g.

Claims (10)

A plate cutting device in which a plate piece (4) is separated from a plate blank (3) with cutting processing, the device comprising: a device body (1), on which is placed a cutting and transporting male ( 2), on which the blank (3) is arranged to be placed and on which the cut plate (4) is arranged to be transmitted for free in the production process, 10. means (6) for transferring the blank (4) to the cut-off point, a removal unit ( 5), with which the cut plate (4) is, if necessary, alternatively arranged to be removed under the cut and transport plane (2), a cut unit (7), and 15. a transfer unit (8) for transferring the cut plate (4) to a transport part (2a) of the cutting and transport plane (2), characterized in that the transfer unit (8) is substantially located on the removal unit (5) and the transfer unit (8) is are provided with transfer means (9) arranged to focus an over-föringspäverkan on the upper surface of the avskärda plätstycket (4). Device according to claim 1, characterized in that the transmission: ···; The unit (8) is arranged to move vertically with an actuator (12), preferably rotating about a horizontal link (10). Device according to claim 1, characterized in that transmission directions of the cutting and transport plane (2) and the transfer unit (8) meet, being arranged to transmit the cut plate (4) in the same direction. * » Device according to any one of claims 1 to 3, characterized in that: the transfer means (9) of the transfer unit (8) comprises one or more cylindrical rollers, the outer surface of which is arranged to press against the upper surface of the cut plate ( 4) during the business of transmission; the unit (8) and transferring the cut plate to the cut-off part and the transport part (2a) of the transport plane (2) with the transfer load transmitted by rotation of the cylindrical rollers and which is based on frictional force. 5. Device according to claim 1, characterized in that the transport part (2a) of the cutting and transport plane (2) consists essentially of a group of cylindrical, on the same horizontal plane | positioned rollers (13) arranged to rotate about their longitudinal axis, the longitudinal axis of which is parallel to the cylindrical rollers of the transfer unit (8) acting as the transfer means (9). 6. Apparatus according to claim 1, characterized in that the transport part (2a) of the cutting and transport plane (2) consists of a brush conveyor structure. 15 7. Device according to claim 6, characterized in that the brush conveyor structure is a so-called cylindrical brush structure in which brush bundles (16) are placed in a cylindrical brush body (15) so that they project substantially in the direction of the periphery of the entire cylinder. The body (15) and radially in the longitudinal direction of the cylinder body (15) are arranged to support the cut plate (4) as the transport member (2a) stays still and transmits the cut plate (4) forward in the production process by gripping the lower surface of the plate piece. cylinders are simultaneously rotated in the same direction with a drive device (14) associated with the device. • I · 8. Apparatus according to claim 6, characterized in that the brush conveyor structure is a so-called brush strap structure, which preferably consists of a number of straps arranged next to each other in the transfer direction (pii SS), which are moved with a driving device and which comprise. brush bundles on its outer surface. 9. Device according to claim 1, characterized in that the detaching unit (5) comprises an outer part (17) arranged to rotate about a horizontal link (18) and comprising means for to effect the movement of the outer portion (17) of the removal unit (5) in the vertical direction prior to rotation about the horizontal joint (18), with the particular purpose of removing the plate (4) cut off from the platen (3) if necessary. ) by using a contact member (29), which is present and vertically in contact with the device, of a pressure member (27), which contact means aligns a directed direction force on the upper surface of the cut plate (4). 10. Device according to claim 1, characterized in that the cutting unit (7) is a laser, plasma, water jet and / or burn cutting unit. 10 i i • * · «I I * · · * · · '1 ♦» I * · I »· a •' * · · a» »