FI70818C - MASKIN FOER ATT INBOERDES FOERENA SKIVDELAR MEDELST HOERNBESLAG - Google Patents

Description

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45 P "tent:. 'C' .'.- 'I? T P7 10 1000 (51) Kv.lk. * / Lnt.CI. * B 27 F 7/17 gy 0 | y | | ___ p | LA f) (21) Patent application - Patenttnsökning 3 1 ^ 0/72 (22) Application cloud - Anxöknlngtdag 09.11 .72 (Fl) (23) Initial cloud - Glltighetsdag 09.11.72 (41) Has become public - Blivlt offentllg 12.05-73

National Board of Patents and Registration Date of Nihtävilcipano and publication. - 18 07 86

Patent and registration authorities' 'Ansökan utlagd och utl.skriften publicerad *' (86) Kv. application - Int. ansökan (32) (33) (31) Privilege claimed - Begird priority 12.11 .71 Sweden-Sverige (SE) 1 ^ 93/71 (71) Nefab Plywoodemballage AB, Runemo, 822 00 Alfta, Sweden-Sverige (SE) (72) ) The present invention relates to a machine for the construction of two-plate parts. The present invention relates to a machine for connecting two plate-like parts. Hans Elov Nordgren, Edsby, Sweden-Sweden (SE) (7 * 0 Ruska & Co Oy (5 * 0 Machine for joining plate-like parts together by means of angle reinforcements to be joined together by means of angular reinforcements formed of strip-like material to form a faceted container, for example a box, container, casing or the like, comprising a punching device for punching fastening strips together with a crimping device for clamping the reinforcing blanks to the container plate parts in question, fitted with a common, suitable mmin to an elongate tool movable up and down relative to a stationary base having a free-standing abutment for the pressing device, the pressing device arranged above the abutment having an elongate, substantially V-shaped recess with two pressing surfaces in a substantially opposite longitudinal direction a planar reinforcement blank, while the abutment has a V-shaped support portion with two support surfaces directed towards the pressing device.

In similar previously known machines, after stamping and other possible processing, the strip is cut into predetermined 2 ... ..... 7081 8 corner reinforcements in a special device made for this purpose, after which the angle reinforcements are assembled and stored for later attachment in another device, or on the machine to the tank or parts of the tank. However, there are many disadvantages to this approach, most notably that private angle reinforcements must be transported from one device to another before they are attached to the containers. This has resulted in increased transport and handling costs as well as unnecessarily high space requirements.

The object of the present invention is to eliminate the above-mentioned drawbacks, which is achieved by the machine according to the invention, which is characterized mainly by the fact that the reinforcing sheet is pressed onto the parts of the container in question, preferably immediately after the strip is cut.

In this case, the angle reinforcements can be immediately attached to the tanks, which eliminates the need to transport the angle reinforcements between different devices.

The invention will become more apparent from the following description and the accompanying drawings, in which some preferred embodiments of the invention are shown by way of example.

In the drawings, Fig. 1 shows a side view of a first embodiment of the machine according to the invention, Fig. 2 shows a larger part of the machine according to Fig. 1, Fig. 3 shows a cross-section taken along line III-III in Fig. 2 and Fig. 2 shows a cross-section taken along line IV-IV.

In Fig. 1, reference numeral 1 denotes a part of the machine which processes the strip to be formed as angle reinforcements by pressing into the container parts in question, reference numeral 2 denotes a stock with strips 3 fed through a feed station to a strip handling section 1. a roll of several hundred meters of tape. The strip 3 is preferably made of metal, e.g. carbon steel, and its width and thickness are such that it can be pierced flexibly. Thus, in practice, the width of the strip of metal may be 7081 8 3-5 cm and the thickness 0.5 - 1.5 mm. However, the invention is not limited to metal strips, as other materials are also possible.

In this case, the feed station 4 is formed by two overlapping rollers 6 and 7 arranged on the column 5, the former being operable by the motor 8, while the second roll rests resiliently against the strip 3 passing between the rollers. The belt 3 passes from the feed station 4 to the machining or processing part 1 of the machine through a control device 9, which may be formed, for example, by two longitudinal plates separated by a spacer, which guide the belt between them.

The machining part 1 of the machine comprises a fixed or stationary stand 10 and a tool 11 movable relative thereto. In the embodiment shown, this movable tool consists of an elongate beam-like body movable vertically towards and away from the stand by means of a drive not shown in detail in the drawings. . The drive in question is indicated in the figure by reference numeral 12.

According to the principle of the invention, a pressing device 13 is arranged in the movable tool 11, which meets the stop 14 of the base 10. In addition, a cutting device 15 and a punching device 16 are arranged in the movable tool 11, which meet the pad 17 of the base 10.

Reference is now made to Figures 2 and 1, which illustrate in detail the pressing device and its counterpart. It can be seen from these figures that the pressing device 13 comprises a slide plate 18 arranged at one end of the tool 11, i.e. at or near the outlet end, formed by an elongate plate, preferably of carbide, fixed to the lower surface of the tool 11 by screws 19 or other fastening means. The lower surface of the slide plate 18 has a V-shaped recess 22 formed by two pressing surfaces 20 and 21. The angle between these pressing surfaces 20 and 21 in the case shown is about 160 °.

The mating piece 14 is formed by a stop 23 protruding from the base 10 below the slide plate 18. The upper surface of this stop 23 has, as best seen in Figure 4, two support surfaces 24 and 25 forming an angle with each other, on which the two walls 26 and 4 7081 8 27 of the container can rest. . In this case, the angle between the support surfaces and 25 is 200 °, as a result of which the angle between the pressing surfaces 20 and 21 of the slide plate 18 together with the angle between the support surfaces and 25 forms four right angles, i.e. 360 °. The lower surface of the stop 23 is also V-shaped, so that the angle between the lower surfaces can be equal to the angle between the upper support surfaces 2 and 25.

A holder 28 is arranged on the lower surface of the slide plate 18 to retain and guide the reinforcing blank 3 relative to the slide plate when the reinforcing blank is pressed against the container walls 26 and 27. According to a particular embodiment of the invention, said holder is formed by two diagonally slidable retainer members 29 Most preferably, the holding bodies 29 are elongate strips which remain in the slits 30 under the influence of the abutment members not shown in more detail in the drawings.

Figures 2 and * 4 show the holding pieces 29 in a first position projecting from the slits, where the distance between the adjacent parts of the holding pieces, i.e. the distance between the lower edges of the holding pieces, is smaller than the width of the reinforcing blank 3. In this way, the reinforcing blank 3 remains between the obliquely inwardly directed lower parts of the holding pieces. As the slide plate 18 is moved toward the stop 23 during compression and the retainers 29 come into contact with the container walls 26 and 27, the retainers 29 protrude into the slots 30 to a second position where the lower edges of the retainers are greater than the width of the reinforcement blank 3, releasing the reinforcement blank. walls. As shown in Fig. 4, the holding pieces 29 can move from the second position to the first position solely by gravity, i.e. they fall under their own weight down to the first position shown in Fig. 4, where the reinforcement remains in place relative to the slide. It is also possible to fit springs in the slots 30, for example coil pressure springs, which continuously tend to push the holding pieces into the first position shown in Fig. 1. It can be seen from the figure that the holding pieces 29 are arranged in the immediate vicinity of the V-shaped recess 22 in the slider.

In this case, the cutting device 15 is formed by a first blade or edge 31 formed on the slide plate 18, which is movable

• I

5 70818 with respect to a second blade or edge 32 in the stand 10, preferably in its pad 17, which is located in the same vertical plane as the first blade 31 · As can be seen from Figure 2, the second blade 32 is at a certain height above the stop 23. In this way, the strip 3 becomes cut into a separate reinforcing blank immediately before it is pressed into the parts of the container.

Reference is now made to Figures 2 and 3, which show a punching device belonging to the machine. It can be seen from these figures that the punching device has a plurality of punch members 33 »which can be detached or removed individually or in groups, which can be moved into the holes J> k in the pad 17. Each punch member 33 is formed by a cylindrical pin, the lower end of which is bevelled and sharp to pass through the strip and in this case to punch four fastening strips into the strip. The punch members are arranged in two parallel rows, forming two rows of fastening strips on the strip. However, it is also possible to arrange the punches in another way, for example kneeling or in more than two rows. The punch members are attached in groups to a plurality of punch holders 35 · In the illustrated embodiment, three pairs of punch members are connected to each punch holder 35, although it is also possible to fit a larger or smaller number of punch members to each punch holder. The punch holders and punch members are releasably connected to the movable tool 11 in the following manner. See Figure 3. The sides of the punch holders are in an oblique position and rest against two similarly oblique strips or guides 37 and 38.

Of these strips, the second strip 37 is fastened to the beam-like frame 11 by means of screws 39 or other suitable fastening members fastened from below. The second strip 38 is fastened to the beam frame size 11 by screws * 10 which are screwed into place from above. A fitting piece A1 is arranged between the upper surface of the punch holders and the beam piece 11, which, as well as the punch holders and strips, can preferably be made of carbide. When the screws 39 and AO are tightened and rest against the beam piece 11, the punch holders 35 are firmly attached to the beam piece 11. When one or more punch holders need to be removed, the screw AO is loosened, can be removed. This makes it possible to adjust the number of punches to the length of the angle reinforcements to be made on the machine 6 70818. In the case of the longest corner reinforcement, the full number of punches shall be used and, if shorter corner reinforcements have to be made, the appropriate number of punch holders and associated punch members in relation to the length of the corner reinforcement shall be removed.

Arranged between the punching device 16 and the pad 17 is a release member h2 which, after stamping the fastening strips on the strip, detaches the strip from the punching members. This release member is formed by a plate with holes 43 for punches, which is connected to the beam piece 11 by means of springs 44, preferably coil pressure springs. In order to guide the release plate 42 so that it always moves vertically, columns 45 are connected to the plate, which move by sliding fit in the seats or supports 46. These are attached to both sides of the beam piece 11. Figure 3 shows, for the sake of simplification, only one guide column and its associated support, although there are similar guide devices on both sides of the beam body. The coil pressure springs 44 tend to keep the release plate 42 spaced from the beam body 11, with the Meis-road members 33 in the position shown in Figures 2 and 3, where the lower ends of the Meis-road members are not in contact with the strip 3.

A recess 48 is provided in the lower surface of the release plate 42 or more specifically in the insert 47 in this plate, which corresponds to a protrusion 49 in the pad 17 · The width of this protrusion is slightly smaller than the width of the strip 3. The recess 48 in the recess 47 has two more or less inclined side surfaces 50. It will be seen from the above that when the embossment 49 penetrates the recess 48 during stamping, both edge portions of the strip 3 are shaped so as to bend or obliquely to the rest of the strip. Subsequently, these obliquely bent edge portions of the strip, when pressed against the container parts in question, will penetrate the wall material of the container parts, thus avoiding the edge portions of the angle reinforcement coming off the wall material.

A plurality of resilient members 51> are connected to the pad 17, the purpose of which is to keep the strip 3 at a distance from the upper surface of the pad required by the length of the fastening strips and thus prevent the fastening strips from contacting the pad after stamping. In practice, the resilient bodies 51 may be formed of elongate metal pieces which can move in the cushion bores 52 and 7 70818 by means of screws or other members 53 under the action of coil pressure springs acting on these metal bodies, tending to hold the bodies 51 in a constant upwardly projecting position. On the resilient body 51, which is located close to the cutting device 15, a guide member 55 in the form of a bent flat spring is arranged, the function of which is to guide the strip 3 to be stamped into the holder 28 of the slider 18.

Referring to Fig. 1, it should be noted that the stop 23 acting in response to the pressing device 13 is free-bearing. This is done because, for example, the body of the container formed by the four walls could be passed around the stop 23 by squeezing at least the last of the four corner reinforcements which bind the walls in question together. However, if the abutment 23 is very long to provide compression of the long angle reinforcements, according to Figure 1 the end of the support 23 projecting from the base 10 may be supported by a support member 56 pivotable to the inoperative position so that the container body can be fitted around the support and in a operative position. head. The control of the pivotable support member 56 cooperates with the operation of the machine so that the support member supports the lean only during the pressing step, but is otherwise in the inoperative position detached from the lean.

The parts of the tank to which the corner reinforcements are pressed are made of a wood material, such as plywood. However, it is also possible to use the machine when the parts of the tank are made of other materials, for example paper, plastic or combinations of paper, wood and plastic.

The above machine operates as follows. From the storage spool 2, the strip 3 is fed step by step to the machining part 1 of the machine by means of feed rollers 6 and 7. At each step, the strip is fed a length corresponding to the length of the incoming corner reinforcement, which in turn is determined by the dimensions of the container or parts of the container to which the corner reinforcement will be attached. When feeding the strip, the movable tool 11 is in the rest position at its highest point, where the punching members are not in contact with the strip. Once the belt has been fed, the movable tool 11 is caused to move downwards by means of a drive mechanism (not shown) in the drawings, whereby the following occurs.

In the first step, a first set of fastening strips is punched into the strip 3 so that the punching members 33, when moving the tool 11 8 70818 down so far that the release plate * 42 rests against the pad 17, pass through the strip and travel some distance into the empty holes 3 * 4. go through the strip and the strip material forms against the wall of the holes 3 * 4. At this point, the tool 11 acts against the effect of the pressure springs * 4 * 4. Immediately before the release plate * 42 comes into contact with the cushion 17, care is taken to bend the edge portions of the strip 3 so that the protrusion of the cushion * 49 presses the strip into the recess of the release plate * 48, giving the strip edges the shape of inclined side walls 50.

At another time independent of the punch, the strip 3 is cut, whereby a separate reinforcement blank is formed, which already has fastening strips due to the previous step. The cutting of the strip is performed by a cutting device 15, whereby the first blade 31 of the slider 18, during the downward movement, bypasses the second blade 32, when the cutting takes place.

In the third step, which follows the cutting step, the cut reinforcement blank is pressed onto the relevant parts of the container. This is done by means of a slide plate 18, which is held by the holder 28 and guides the reinforcing blank until the slider comes to its lower position, where the reinforcing blank is released to press the fastening strips onto the parts of the container.

When the tool 11 moves up again after the downward stroke, the release plate * 12 detaches the strip from contact with the punch members 33, because the springs * 4 * 4 feed the plate and thus also the strip punches. At the same time, at the moment of stamping, the depressed elastic pieces 51 come to move somewhat upwards under the action of the springs 5 * 4 and hold the strip 3 at a certain height above the pad 17. In this case, the stamped fastening strips do not come into contact with the pad, so that the longitudinal feeding of the strip can take place without obstructing the stamped fastening strips.

When the tool 11 has reached its upper end position, a new length of strip is fed, whereby the part of the strip with the fastening strips stamped in the previous step passes to the pressing device 13. The steps are then repeated so that a new set of fastening strips is stamped, the strip is cut and The reinforcing blank 28 is pressed onto the desired ones

II

Claims (2)

9 tank parts. 7081 8 The control of the tool 11 is most preferably carried out by means of a manually operated control device, in which case the person placing the parts 26 and 27 of the container against the counterpart 1 controls the movements of the tool. The adjustment and control of the various units belonging to the machine according to the invention can be performed electrically, pneumatically or hydraulically. The feeding of the strip, as shown in Fig. 1, can be performed by means of rollers, but it is also possible to provide feeding mechanisms consisting of articulated arms or other mechanical members which grip the strip and feed it longitudinally forward. The advantages of the machine according to the invention are obvious, since the reinforcing blank can be pressed onto the container or parts of the container in question immediately after it has been stamped. In this case, no special machines are needed to clamp the angle reinforcement. In addition, all unnecessary transport and handling of private corner reinforcements between different stations is eliminated. One advantage of the machine according to the invention is that the machine can be simply and quickly arranged to operate on angle reinforcements of different lengths. The claim A machine for joining two plate parts together by means of angle reinforcements formed of strip-like material to form a faceted container, for example a box, container, case or the like, comprising a punching device (16) for punching fastening strips on a strip (3) and a cutting device (15) elongate substantially planar reinforcing blanks, wherein the punching device (16) and the cutting device (15) together with the pressing device (13, 18) for pressing the reinforcing blanks into said container plate parts (26, 27) are arranged in a common, preferably elongate tool (11) movable upwards; and downwards relative to a stationary base (10) having a free-standing stop (23) for the pressing device, the pressing device arranged above the stop having an elongate, substantially V-shaped recess 10 with two pressing surfaces (20, 21). 7081 8 (22) intended to receive a substantially planar reinforcement blank in its longitudinal direction, while the stop (23) has a V-shaped support part with two support surfaces (24, 25) directed towards the pressing device, characterized in that a holder is arranged in the pressing device itself (28) holding and guiding the reinforcing blank below the pressing device (18) in the longitudinal direction of the reinforcing blank parallel to the longitudinal direction of the recess until the reinforcing blank is pressed onto said plate portions (26, 27). that the holder (28) comprises two mutually inclined holder pieces (29) which are movable in a slidable movable slot in the slots of the pressing device (18) arranged on the longitudinal sides of the recess (22). between a holding position where the distance between adjacent portions of the brackets is less than the width of the reinforcing blank (3) and another releasing position of the reinforcing blank where the distance between adjacent portions of the brackets is greater than the width of the reinforcing blank, with the slots approaching . Il