PT101359B - LOADING ROAD AND DEVICE FOR YOUR MANUFACTURE - Google Patents

Description

75 446 HE 12640 li

DESCRIPTIVE MEMORY

The present invention relates to a pallet having the features corresponding to the fundamental concepts set forth in claim 1, as well as to a device for manufacturing such pallets. The object of the invention is to provide a particularly advantageous and easy solution for the conformation and arrangement of the support feet, which is combined with particularly advantageous mounting costs, which in accordance with the invention is achieved by the adoption of the measures set forth in part The invention further relates to a device for the manufacture of said load pallets, with which the same can be produced in a manner rational and economic. This is achieved by adopting the measures set out in the characterizing part of claim 8.

With a device of the type described, not only the star cut, but also the introduction of the inner tube section into the outer tube section can be realized, practically in a single operation, in addition in another design of the device according to the invention. In the present invention, the feet of the pallet can be fixed simultaneously on the pallet of the pallet.

Advantageous and suitable variations of this device constitute the content of the dependent claims 9 to 22. The invention will be explained in detail with reference to the drawings, without this implying that the invention is in any way limited. Fig. 1 shows the pallet in its flat form (sketch of the pallet);

Fig. 2 shows the perspective pallet viewed from above, ready for use; Fig. Fig. 3 shows the same load stage of Fig. 2 in perspective, viewed from below; Figs. 4 and 5 show enlarged details relating to the other figures; Figs. 6 and 7 are, respectively, a side view and a top view of the punch; Figure 8 is a front view of the device; Fig. 9 is a side view of the device, seen in the direction of the arrow A in Fig. 8, in which, for better visibility, the feed conveyors of the inner tube sections have been eliminated; 10 is a top view of the conveyor for feeding the inner tube sections; Fig. 11 is a view of the device similar to Fig. 8, but in another working position with respect to that Figure; Fig. 12 is a top cross-sectional view of the machine table, section line VII-VII in Fig. 8; 13 shows a cross-sectional detail of the correct attachment of a pallet foot with an outer tube section and an inner tube section. The base material for the manufacture of the pallets is in the form of a sheet and is, preferably corrugated cardboard. The pallet is preferably produced from a flat cut out sketch as shown in the top view of Fig. 1. In this part the central rectangular part forms the pallet 35 of the pallet. Are provided for

In each of the four sides of the pallet 35 platform, connected thereto by posts 37, skids 36 of the pallet, in the form of strips. The dimensions (L and B) of the pallet platform 35 are adapted to the specific conditions presented and may also conform to standard normalization (DIN 15146). The broken lines 38 and 39, shown in Fig. 1, constitute the folding lines, parallel to the longitudinal axis of each of the strip-like skates 2, about which said pieces (toes 37 and skates 36) are folded in order to bring the pallet to the ready-to-use form. The tops 37, like the skids 36 of the pallet, are folded in the same direction, so that the tops 37, or the plane in which they are, are perpendicular to the pallet 35 of the pallet, and the skids 36 of the pallet 36. are parallel to the pallet 35 of the pallet. This is shown in the top and perspective views, Fig. 2, and below and in perspective Fig. 3. In order to keep the skids 36 of the pallet apart from the platform 35 of the pallet, support feet 40 are provided These support feet 40 sit at their top when the loading bed is folded and ready for use at the points shown in Fig. 1 by a circumferential thin line 41.

In the illustrated embodiment, each support foot 40 is comprised of a pipe section 42, having a circular cross-section. At the points marked by the circumferential line 41 are provided in the platform 35 of the pallet and / or in the skids 36 various cuts 43 arranged in a star shape (Fig. 4), the latter end of which are situated on a line here represented by the line 41 corresponding to the contour inside of the tube section 42. This line is preferably scored or scored. By these cuts 43 sectors 44 are formed which form in practice the tabs obtained by cutting.

For assembling the support feet 40 tube sections 45 are inserted in the tube sections 42 placed between the plate-

75 446 HE 12640 and the sum of these lengths is equal to the height of the pipe section 42. This introduction or positioning of the pipe pressure is achieved by folding the sectors 44 obtained by the cuts 43 thus remaining between the two pipe sections (Fig. 5). The dimensions of the interacting parts are chosen so that the connection of the parts between them is done with tightening, keeping them well together. In the scope of the invention it is still possible to use glue in this connection. The pipe sections 45, or the length thereof, may also be greater than half the length of the pipe section 42, conveniently, of a quantity equal to the thickness of the material of the platform of the pallet or the skid. This detail is shown in Fig. 5. In this way the pipe sections 45 can also bear load or reinforce the support feet 40 as a whole.

For convenience the pipe sections 42 and 45 have a circular cross-section. However, sections of pipe having a different cross-section, such as, for example, square, elliptical or polygonal can also be provided. In these cases e. to the best of our knowledge and experience, there has been no advantage in relation to the circular section at least in connection with the assembly of these parts. The polygonal support feet may possibly have a higher load capacity, for the same wall thickness and for the same material. The load platform described here and shown as an example of embodiment has, in addition to the platform 35 of the pallet and the support feet 40, the skates 36, which are connected to the platform. platform 35 of the loading platform by the towers 37. In the present invention, the studs 37 and the skids 36 can be eliminated so that the pallet has only the platform 35 and the support feet 40.

The following descriptions relate to a device for the manufacture of load pallets composed only of pallet platform 35 and support feet 40. The punch 1 is constituted by a first cylindrical section 2, the diameter of which is -5 The inner tube portion 45 of the support foot 40 (FIG. 13) approximately corresponds to the inside diameter of the inner tube portion 45, and the cone-shaped top 3 of which has a plurality of cutouts 4, arranged in a star shape on a conical surface imaginary The axial length of the cylindrical portion 2 corresponds substantially to the height of the inner tube section 45, being conveniently a little longer than this. To this cylindrical portion 2 is followed up another section 5, the diameter of which is larger than that of the section 2, so that a shoulder 6 is formed for abutment of the section of tube 45 received in the section 2. The device has a fixed table 7, in the middle of which is fixed a frame 8, the horizontal section 9 of which supports a cylinder-piston unit 10, the piston of which is connected to a support frame 11, with vertical guides 12 sliding on supports corresponding to the section 9 of the frame 8. On the underside of the support frame 11, adjustable in height by the action of the piston-cylinder unit 10, are mounted various punches 1, the distribution and number of which corresponds to the distribution and number of the feet 44 of the pallet to be attached to the platform 35 of the pallet.

In the table 7 there are mounted two horizontal guides 13 parallel to each other, on which a settling device 14 can slide horizontally to the platform 35 of the pallet, whereby this settling device 14 moves inside or outside the pallet range of travel of the support frame 11 where the punches 1 are located.

This seating device 14 has a horizontal plate 15, to which are attached the cup-shaped positioning members 16, which serve to place the outer tube sections 42 of the feet 40 of the pallet. On this plate 15 are also fixed upwardly directed pins 18 which serve as stops for the pallet 35 of the pallet, which is placed on the tops of the tube sections 42. These stoppers are in a horizontal plane in which they also encounter the tops of the outer tube sections 42, placed on the cup-shaped positioning members 16. Instead of cup-shaped positioning members, positioning elements in the form of washers or disks, or also pin assemblies, i.e. any components and construction elements suitable for holding the tube portion 42 to place. The plate 15, or a frame, which could be provided instead with its positioning members 16, is supported by a skate 20 supported on the guides 13, resting on this skate 20 in a vertical elastic manner by means of of the springs 21.

In the middle area of the table 7 and in particular on the sides of the edges are arranged several vertical counter-supports 22 whose height measured from the table 7 is somewhat smaller than the distance between the bottom face of the plate 15 and table 7.

It is assumed that the pallet to be manufactured has one foot 40 at each apex and another foot 40 in the middle of platform 35, i.e. a total of 5 feet 40 of the pallet to be loaded.

In the vertical median plane of the table (Fig. 12) there are also vertical counter-supports 23 in the form of blocks, with a height lower than the counter-supports 22 provided at the edges. Below the central positioning member 16 and the plate 15 are also counter-bearings 24 in the form of a block, the sum of the heights of these counter-supports 23 and 24 being equal to the height of the counter-support 22.

Perpendicularly to the direction of travel of the settling device 14 and above and below the support frame 11 (Fig. 11), when in its lower working position, on both sides of the frame, there are attached conveyors which essentially conveyor belts 25 extend substantially horizontally, which in the embodiment shown in Figs. 8 and 11 develop perpendicular to the plane of the drawing. In one of the tops of these conveyors 25 are arranged feeding devices, not

Through which the inner tube sections 45 are supplied to the conveyor belt 25 for the feet 40 of the pallet. At each of the points of the conveyor belts 35, from which the tube sections 45 to be positioned opposite the punches 1, arranged in the support frame 11, are provided unit-to-unit separation devices consisting of stops 27 and piston-cylinder units 28 as well as a delivery slider 29. Furthermore, on the side of the conveyor screens 25 or the frame supporting these conveyor screens, facing the support frame 1.1, there are fastening devices 30 , which can be easily released and have different axial lengths. These routing devices 30 are each composed of a pair of horizontal guides 31, spaced apart from one another, between which the inner tube sections 45 pass, and which can oscillate, on the opposite side to that of the conveyor screen 25, one in the direction to the other, with a tenacious, horizontal movement. The ends of the guides 31, movable in a movement similar to that of a tenon, lie in the travel path of the punches 1.

As regards the constructive aspects of the device and its operation, which are described below, it is based on the position in which the components, which constitute the previously described device, are in the relative positions shown in Fig.

Firstly, the pre-prepared outer tube sections 42 are placed in the cup-shaped positioning members 16, which are fixed to the plate 15, five pieces - in this case. mentioned above, and then the pallet 35 is placed on the tops of these pipe sections 42, the pallet 35 of the pallet being well flat on the pipe sections 42, by means of the the pipe sections 45 have been introduced, and by means of the unit-to-unit separation devices, and by means of the sliders 29 (Fig. 10), the pipe sections 45 are pushed towards the tenacious ends of the guides 21 of the routing device 30, the tube sections 45 being in the path of the punches 1 of the support frame 11. At this time the shoe 20 (Fig. 8) is drawn or moved to the left until it is under the support frame 11 (Fig. 11), this support frame 11 being then lowered by means of the cylinder-plunger unit 10. At that time the punches 1 cross the previously laid pipe sections 45 in position by the routing device 30, whereupon, upon further advancement, the cutters 4 cut the platform 35, making star-shaped cuts, which advance into the tube sections 42, until the tops of both sections of tubes 42 and 45 are substantially at the same level (Fig. 13). The tabs produced by the star cuts are wedged between the pipe sections 45 and 42. Due to the exertion exerted by the punch 1, the plate 15 is tightened against the springs 21, so that the plate 15 and the positioning members 16 abut in the counter-bearings 22, 23 and 24, or what is the same, the counter-bearings act in such a way that the shoe 20 or its guides become almost uncharged and only have to withstand the pressure coming from the springs 21. This pressure is not much larger than the weight of the plate 15 with the positioning members 16, the pins 18 and the parts 17 and 19 arranged to form the pallet of the pallet.

When the platform 35 of the pallet is cut in the described manner and the two pipe sections 42 and 45 are inserted into each other, the tabs being formed by the notches between the two pipe sections, the support frame 11 with the punches 1 is brought into its initial position (Fig. 8) and the finished loading bed is withdrawn from the laying device 14. Meanwhile the delivery curtains 29 have pushed new tube tubes 45 into the tenon-shaped end regions of the guides 31 of the routing device and on the laying device 14 new pipe sections 42 and a new platform 35 of the pallet are placed, the series of operations described above being repeated.

The positioning members 16 and the punches 1 are mounted on their supports and can move horizontally, so that load pallets can be made with different numbers of feet. For the same reason, different waits are also provided in the routing devices 30 and the routing devices 30 are easily removably mounted on the longer sides of the conveyor belts 25. The ends of the gripper-shaped guides of the feed device also have to be in the path of a punch so that the punch on the lowering can pick up a length of tube 45. In this way the feeding devices 30 must be able to adapt to the positions of each punch 1 connected to the frame 11 shows a top view of the table 7 with the counter-bearings 22 and 23. At the instant represented there are two load pallets with certain dimensions and the arrangement of the counter-bearings 22 and removable 23 shown in Fig. 12 has been chosen so that both normalized dimensions are respected, however arbitrary distribution is possible to the feet. It has already been stated, with reference to the exemplary embodiment described, that the punches 1 are cylindrical in shape. However, it is also possible to adopt, for the punches and the feet of the pallet, a different section, for example polygonal or oval. It has also been previously stated that the outer tube sections 42 are placed manually in the device, but this arrangement can also be made by an automatic mechanism.

To prevent the pallet 35 from bending when the punches 1 are lowered or when they then recede from the position in which they are seated, a pallet can be provided for the pallet of the pallet. This presser foot is preferably configured as a plate. This flat foot is the size of the platform of the pallet and has multiple openings for passage of the punches 1.

Such a flat presser foot should be in the middle region of the device and supported so as to be lifted and lowered. In the initial position the presser foot is in the space between the punches 1 and below the conveyor screen 5 and above the pallet 35 platform already placed in the device (Fig. 9). When the skid 20 with the pallet 35 on top of the pallet 20 is in its working position the pallet 10 is formed in the form of a low plate on the pallet 35 of the pallet and is held until the punches have returned to their initial upper position. To facilitate the viewing of the attached Figures, which illustrate the exemplary embodiment of the invention the plate-shaped presser is not shown. The device shown and described works with punches 1 acting vertically. It is nevertheless permissible to design the rotating device 90 ° in its entirety, so that the punches 1 move horizontally, in which case the platform 35 of the pallet is placed vertically.

Legend of References 1 - Puncture 22 2 - Section 23 3 - Top 24 4 - Cutter 25 5 - Section 27 6 - Backrest 28 28 - Table 29 8 - Frame 30 9 - Section 31 10 - Uni. of piston-cylinder 35 11 - Support frame 36 12 - Guide 37 13 - Guide 38 14 - Disp. 39 - Piece 44 20 - Skate 45 21 - Spring - Counter-support - Counter-support - Counter-support - Conveyer screen - Stopper - Uni. of piston-cylinder - Positioning cursor - Disp. Feeding - Guide - Loading platform - Loading platform skid - Plumb line - Dashed line - Dashed line - Support foot - Circumferential line - Tube section - Trim - Sector - Tube section. v; 3

Lisbon,

By NORBERT WELTE THE OFFICIAL AGENT

Claims (16)

75446 HE 12640 li -1 / 5- CLAIMS A device for the manufacture of pallets, comprising a platform and feet, the feet being constituted by sections of tube inserted into each other, between which are tightened by snap-fit tabs cut on the pallet of the pallet with the The apparatus according to claim 1, characterized in that the device comprises at least one fixing device for receiving the platform of the loading platform and positioning means located below the settling means for the arrangement of the outer tube sections, a punch moving in an arrangement aligned with one of the positioning members and mounted for axial displacement, the punch having a shaft for receiving the inside of the tube section, the shaft diameter corresponding to the inner diameter of the tube section, and its length being greater than the axial length of the inner tube section, a shoulder being provided at one end of the shaft or adjacent and is preferably formed by a dilation in the diameter of the punch, an end of the inner tube portion abutting against the shoulder, characterized in that a number of cutters (4) are arranged on the top of the punch (1), in which the cutters (4) are located, when the inner tube section (45) is arranged in the punch, lies in front of the surface of the inner tube portion (45) relative to the axial displacement direction, and the axis of the imaginary cone is aligned with the axis of the shaft. Device according to claim 1, characterized in that a plurality of punches (1) are provided, each having a vertical axis, arranged in a horizontal support frame (11), which is movable in the vertical direction. Device according to claim 2, characterized in that at least one conveyor (75,445) is disposed laterally with respect to the support frame (11), HE 12640-1-2 / 5- (25), separating means, corresponding to the number of punches (1), are arranged in the support frame (11), and that feed means (30) are provided on the conveyor , on the side facing the support frame (11), by means of which the tube sections (45) provided by the conveyor can be moved to the area in which the punches (1) move individually. Device according to claim 4, characterized in that conveyors, preferably conveyor belts (25) are arranged on at least two mutually parallel sides of the support frame (11), and that the separating means are constituted by assemblies composed of cylinders and pistons (28), the axes of which are arranged perpendicular to the conveyor feed direction, and each separating means is constituted by at least two piston-cylinder assemblies (28, 29). Device according to claim 3 or 4, characterized in that the feed means (30) each comprise a pair of guides (31) arranged horizontally spaced from one another to receive each other the inner tube sections (45), the ends of which, remote from the conveyor, can oscillate towards each other in a horizontal plane with a movement similar to that of a tenon. A device according to any one of claims 3 to 5, characterized in that feed means (30) are provided with different axial lengths and each of the feed means (30) is fixed easily removably on the longitudinal side of the conveyor (25). Device according to any one of the preceding claims, characterized in that a fixed machine table (7) is provided below the vertically adjustable frame (11) on which a laying means (14) for the platform loading platform (35), of so as to be moved horizontally and as a result of the horizontal displacement of the locating means (14) is movable into or out of the reach of the support frame (11) of the punches (1). Device according to claim 7, characterized in that the positioning means (14) has a horizontal frame or plate (15), on which cup-shaped positioning members (16) are arranged in the form of a cup or washer to receive the outer hub sections (42) and this frame or plate (15) has stops, which position the loading platform (35) on the pipe sections, said stops being in a horizontal plane, on which the upper top surfaces of the outer tube sections 42 located on the top of the positioning members 16 lie. Device according to claim 8, characterized in that the frame in which the positioning members (16) are in the form of cups or washer is on one side on a skate (20), which is movable horizontally relative to to the machine table (7) and is resiliently supported in the vertical direction relative to this shoe (20). Device according to any one of the preceding claims, characterized in that counter-supports (22, 23) are provided below the positioning members (16) for receiving the outer tube sections (42), at least when the skates 20 move under the punch support frame 11, which counter-bearings support the positioning members relative to the machine table 7, when the applied pressure acting vertically is exerted by the punches (1). Device according to claim 10, characterized in that the counter-bearings (23, 24) consist of several telescopically movable parts in the vertical direction 75 446 HE 12640 li -4 / 5-pressure-absorbing. Device according to claim 10, characterized in that the counter-bearings (22) for the laterally positioned positioning members are constituted by a single piece and are secured to the machine table (7). Device according to claim 10 or 11, characterized in that the counter-bearings (23, 24) for the central positioning elements are constituted by several telescopically movable parts, some parts (23) of the fixed counter-supports on the machine table (7) and the other parts (24) fixed on the lower face of the central positioning members. Device according to any one of the preceding claims, characterized in that the positions of the positioning members (16) and the punches (1) can be adjusted horizontally and can be fixed in the chosen position. A device according to any one of claims 1 to 20, characterized in that a peripherally closed and vertical frame (8) is provided, in the upper section (9) of which are arranged the guide and adjustment means (10, 12) of the (11) for supporting the punches (1). A process for the manufacture of a pallet, comprising a platform and feet, the feet being constituted by pipe sections inserted into each other, between which are tightened by snap-fit tabs cut on the pallet of the pallet with the characterized in that the platform of the pallet is held in a fixed position, the outer pipe sections are placed relative to the platform of the pallet at the selected locations and by the punches, the inner tube sections being pressed through the pallet and into the outer tube sections, to form the tabs and tighten them between the inner and outer tubular portions in a single operation. Lisbon, By NORBERT WELTE - THE OFFICIAL AGENT - ENG · ANTÓNIO J0À0 DA CUNHA FERREI RA Ag. Of. Pr. Ind. His das Flores, 74 - 4. * 1 3 U U U 3 B O A