ES2288423B1 - MOLD COVER FOR THE MANUFACTURE OF BALAUSTRES, HANDRAVERS, BASES, PILLARS, REMATES AND OR ANY OTHER PREFABRICATED CONCRETE, SYNTHETIC OR SIMILAR AND MACHINE FOR THE MANUFACTURE OF SUCH SHEET MOLDING AFTER THE MOLDING. - Google Patents

Abstract

The cover-mold is constituted by a body (1) with the shape and dimensions of the baluster to be obtained, based on plastic material, obtained with the collaboration of a blower machine, with the special feature that it has a pair of climbing lines longitudinal and parallel (3) determinants of respective lines of weakening that allow, at the time of the extraction of the baluster, the tearing of the sheath through the strip (4) defined by said climbing lines (3), strip (4 ) which extends towards one of the ends (5) of the sheath by configuring a tongue (6), also delimited by cut or pre-cut lines prolonging the climbing lines (3) and which facilitates manual tearing of the strip. The invention also concerns a machine that, receiving the mold sleeves from the blower, makes cutting of the classic burrs, the filler mouth, the micro-perforations determining the climbing and tongue lines, sealing in said mold sleeves. said micro-perforations.

Description

Holster for manufacturing of balusters, handrails, bases, pillars, auctions and / or any other precast concrete, synthetic or similar and machine for elaboration of said mold cover after molding.

Object of the invention

The present invention relates to a case-mold, of those obtained by molding base of a plastic material and those used to obtain of balusters by filling said covers with concrete, artificial stone or other similar or synthetic product, resins etc.

The object of the invention is to achieve a cover-mold that, after obtaining the corresponding baluster act as packaging for it until the moment of its use and that, with essential character, allows Easy removal of it.

The invention also concerns the machine which, receiving the mold covers from a previous phase of blow molding thereof, perform on these mold covers the operations necessary for a perfect finish of them.

The invention thus falls within the scope of the precast concrete and similar, and more specifically in the scope of balusters and others for the industry of building.

Background of the invention

In the field of baluster manufacturing concrete and similar, the use of mold sleeves, obtained by blow molding based on a tube of plastic material, with the shape and dimensions of the baluster to obtain, so that these Mold covers are used for molding balusters and then are removed and discarded.

Currently and at the time of disposal of such mold sleeves a cutter, blade or similar, to break the cover-mold, what constitutes a process laborious, slow, rudimentary, anti-economic and which requires specialized labor in addition to presenting the additional inconveniences that affect the degree of quality and finish of the balusters, as a result of the cuts made in the cover-mold, which many times remain marked on balusters by cutting tools.

On the other hand and as complementary problems, the mold covers come out of the blower with burrs of plastic that must be removed and currently They also cut by hand. The covers leave the injector closed, with a small hole due to the blow in which its bottom base, having to fill them with a filling hole which are also made by hand, with a strawberry mouthful placed in an engine that must be bring the mold cover to practice said filling hole

Description of the invention

The cover mold that the invention proposed has been conceived and structured in order to solve the molding problem mentioned above, so that it carried out in an extraordinarily fast and simple way, in absence of cutting tools, while the machine invention solves the rest of the manipulation problems previously cited allowing a fully automatic process in the manufacture of mold covers.

To do this, more specifically and in agreement with one of the characteristics of the invention, the cover-mold that is recommended, from the basic structuring of a conventional case of this type, centers its characteristics in the incorporation of two climbing lines, longitudinal and parallel, determining a tear strip in the moment of drawing the baluster, which makes said unsheathed result, as previously stated, extremely Fast and easy.

The machine that is also the subject of the invention is provided with a receiving hopper of the mold covers and is equipped with means to make a series of successive operations, which are the following:

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In First the machine performs the cutting of the burrs from the end bottom of the mold cover, by means of a guillotine-shaped blade that moves with the help of pneumatic pistons;

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TO then make the hole for filling concrete in dough, with the contest of a circularly moving blade by an electric motor while traveling by a guide aided by a pneumatic mechanism to penetrate the cover of the mold cutting the plastic to make the said hole. The machine also removes the residual plastic disk generated for obtaining the aforementioned hole, preventing it from accessing the inside of the case.

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Then the machine performs the climbed or longitudinal micro-perforations, either by puncturing with needles that penetrate the mold sheath, by laser beam, by toothed rollers or by any Another appropriate method.

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TO then cut the burr from the upper end of the baluster sheath, also by means of a guillotine-shaped blade that travels with the help of pneumatic pistons, analogously to how it is done with burrs from the bottom and eliminated the first operational phase of the machine.

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With subsequently the operation of tamponade-painted longitudinal lines micro-perforated, by using a motorized rotating mini-roller with supply continuous and dosed of a liquid plastic material, all in order to prevent water leakage from mass concrete.

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Finally in the lower extremity of the sheath is carried out a cross section which results in the formation of an appendix or tongue in functions of handle for traction and elimination of said tear strip in the phase of demolding the baluster. This cut is carried out by using two coaxially arranged toothed mini-disks and distanced in a magnitude coinciding with the distancing of the two lateral lines of climbing with micro-perforations and facing them, incorporated in a rotating mini-machine High speed pneumatic aided by a pneumatic piston for your shift on corresponding guides to the situation of cut, these minidisks being the same length that the climbing lines of the sheath, to give continuity to the tear strip.

Logically all the mechanisms involved in the machine, both pistons and cutting elements, plugging and painted the micro-perforations, etc., are properly synchronized from a control unit of the machine.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows, according to a view in perspective, a cover-mold for the manufacture of balusters made in accordance with the purpose of this invention.

Figure 2.- Shows a perspective view of the mold-finishing machine, on which the object of the invention is also centered.

Figure 3.- Shows another perspective view of the machine in the previous figure.

Figure 4.- Shows a partial view and in top perspective of the interior of the hopper.

Figure 5.- Shows a detail in perspective of the lower burr cutting mechanism of the cover-mold.

Figure 6.- Shows a detail in perspective of the cutting mechanism to obtain the filling hole.

Figure 7.- Shows a detail in perspective of the cutting mechanism for the practice of filling holes, thus as the mechanism that eliminates the plastic disk obtained in said cutting phase.

Figure 8.- Shows a variant of realization of said device for removing such discs residual

Figure 9.- Shows a detail in perspective of the punching mechanism to obtain the lines of climbed

Figure 10.- Shows a detail in perspective of the cutting mechanism for the upper burr of the cover-mold.

Figure 11.- Shows a detail in perspective of the plugging mechanism of the perforations obtained with the mechanism of figure 9.

Figure 12.- Shows, finally, another detail in perspective, now of the mechanism for cutting the flange in grip functions during tearing of the sheath.

Preferred Embodiment of the Invention

In view of the figures outlined and in of Figure 1, it can be seen how the invention is oriented towards obtaining a mold cover (1), to obtain a baluster with any configuration, according to any design line, equipped with one of its extremities of a filling hole (2), which presents the special  particularity that on its lateral surface incorporates a pair of longitudinal and parallel lines of climbing (3), determinants of a tear strip (4) that runs through the entire sheath (1) and that when they reach their lower limb (5) they extend in a tongue (6) that facilitates the manual grip of said strip for tearing it and, consequently, to facilitate the removal of the cover at the time the baluster assembly. so that these disposal systems of the case make the corresponding maneuver result extraordinarily fast and simple, without the least risk of damage for the baluster.

The machine to obtain this type of covers, shown in detail in figures 2 to 12, is intended to receive the covers (1) of the blower machine, either directly or with the collaboration of a feeder (7), the one represented in figure 2, said covers accessing the machine with burrs at its ends and without the aforementioned lines lengths of climbing (3), so that the function of the machine is to give the case a perfect finish, taking away the burrs from its ends, practice at its lower end the filling hole (2) and practice the climbing lines (3) with its complementary tabs (6), all in one process fully automatic

For this the machine is constituted from of a frame (8), which incorporates at one of its ends a hopper (9) said frame adopting an inclined profile so that said hopper is at an appropriate height level to receive directly the covers of the blower machine and so that in turn eject them at an appropriate height.

The hopper (9) adopts a configuration trunk-pyramidal, rectangular, elongated in correspondence with the covers, and is endowed with a chain (10), conveniently motorized, to drag the covers in one way or another.

This chain adopts a disposition noticeably off-center, as shown in figure 4, and in opposition to the it is placed a plate (11) driven by a pair of pistons (12), so that once a sheath has fallen on the bottom of the hopper (9) the plate (11) presses it against the wall opposite of the hopper, positioning it correctly so that the Machine work on it.

The chain (10) has stops (13) for the drag of the covers and the hopper (9) has a window (14) at its rear limb that allows the chain to pass (10) but not the corresponding tip of the sheath, of which so only the aforementioned window exceeds the burrs of its lower base, but being also the lower base of said cover accessible to through said window (14) in a sufficient amplitude to be able to make the filling hole in it.

At the rear end of the hopper (9), a both sides of the window (14) establish a blade (15), associated with the piston rod (16) and movable on a guide (17), so that this blade cuts the burrs corresponding to the bottom base of the cover, in one phase Operation of the machine on which the drag chain (10) goes back to support the cover on the stop set by the window (14).

Also in this area after the hopper (9) locates the cutting mechanism to obtain the filling hole (2), cutting mechanism that appears partially visible in the Figure 5, in which the cutting blade is perfectly observed previously cited, but which can be seen more clearly in the Figures 6 and 7. This mechanism consists of a motor reducer (18), mounted on a support plate (19) which is movable parallel to the axis of the hopper by means of a piston (20), presenting the output shaft (21) of the moto-reducer (18) coaxial with the shaft of the sheath (1) in working position for it within the hopper, shaft (21) to which a plate (22) is integral, provided with a eccentric blade (23) whose eccentricity coincides with the radius of the hole (2) to be obtained in the sheath, so that said blade (23) describes a circumferential planetary movement coinciding with the cut to be made in the case to obtain the filling hole of it. This blade is fixed with character removable with the collaboration of a captive screw (24) and in correspondence with the axis of rotation of the same axis (21) is extends in a punch-drill (25), with a conical tip (26), intended to penetrate the sheath, so that while the blade (23) reaches the bottom base of the sheath, the punch-drill (25) penetrates substantially into the same, and so that when the piston (20) retracts the set of cutting, after the practice of said filling hole, the punch-drill (25) carries with it the residual disk of said cut.

For the removal of said residual disk, it is say to leave the punch-drill (25) in conditions of repeating its operating cycle, it is expected that, properly oriented with respect to the punch-drill (25) the machine incorporates a blower nozzle (27) capable of generate a jet of air that attacks obliquely at punch-drill (25) and that causes the expulsion of repeatedly cited disc.

As an alternative to this blow nozzle (27) and as shown in Figure 8, the use of a fork (29), movable vertically by a piston (30), so that said fork (29) is placed in the upper position during the advancement phase of the cutting assembly (23-25), allowing blade access (23) to the work area, and finished the cut, at the moment in which the blade exceeds the fork (29), it descends and acts as a half retainer for the residual disk, which remains like this ejected from the punch-drill (25), by means of the rest of the same retraction maneuver.

At this time the chain (10) of the bottom of the Hopper changes its direction of movement and moves towards the area of exit of it, where a window similar to the window (14) existing at the other end of the hopper, but larger, allows the exit to the outside of the cover, which passes under perforations a drilling head (31), especially visible in Figure 9, housed within a housing (32) which in turn it is visible in figures 1 and 2 and it consists of a couple of needles or vertical punches that, acting alternatively of analogous to how the needle of a sewing machine works, they make the two lines (3) of the sheath (1), being distanced in correspondence with the planned width for the tear strip (4) of said cover.

Immediately below, but also it could be previously, the chain (10) interrupts its movement leaving the upper extremity of the sheath (1), and more specifically the burr of said upper limb, facing another blade cutting operated by a transverse piston (33), especially visible in figure 10, where the driven blade by said piston it is hidden by a protector (34).

Since the perforations (3) produced longitudinally on the sheath (1), they could determine a loss of water at the time of filling the case with the concrete that will constitute the baluster, the capping them with a suitable product, for which purpose and as shown in figure 11, on the machine frame assemble a rocker (35) that ends at one end support (36) for a paint roller (37), driven in direction rotating by a motor (38) mounted on its own support (36), and said roller (37) being further assisted by a nozzle (39) for feeding the roller with the sealing product.

The rocker arm (35) is also assisted by a counterweight (40). adjustable positioning, which allows the said rocker (35) tilt in the direction of approach of the roller (37) to the sheath (1), by gravitational effect, with a pressure adequate.

Logically this roller (37) must be located in the imaginary vertical through the climbing lines (3) of the sheath (1), and both its rotational movement and the contribution of the sealing product by the nozzle (39), which interrupt the dead spaces defined between each pair of covers (1) successive.

Obviously and as follows from the observation of the aforementioned figure 11, the climbing lines (3) determinants of the tear-off strip for opening the sheath, it interrupt when reaching the bases of the same, so that said tear strip is inoperative if not extended to one of these bases. To achieve this extension of the lines of climbed (3) towards the lower base of the baluster, it is planned, as shown in figure 12, which on the machine frame another piston (41) is mounted longitudinally to whose rod (42) and with the collaboration of guides (43) a support (44) is shared in solidarity which in turn supports a fork (45) whose branches sides frame the case in its trajectory and receive for its free ends to two mini-pistons (46) of acting on respective jaws (47) for baluster mooring and dragging it with the collaboration of the piston (41), towards the Work area of a pair of serrated cutting discs (48) distanced in line with the climbing lines longitudinal (3) and intended to act on the lower base of the cover, for which purpose said disks (48), connected to a pneumatic actuator (49), are displaced vertically on the base of the baluster, being the support (50) thereof, driven by a piston (51), so that these discs configure in the case the detachable tabs (6) shown in the figure one.

It only remains to point out finally that the different mechanical cutting mechanisms described above can be replaced by laser cutting mechanisms or by cutting means appropriate of any other conventional type.

Claims (13)

1. Cover-mold for the manufacture of balusters, handrails, bases, pillars, finials and / or any other precast concrete, synthetic or similar, of the type that materialize in a single piece body obtained by blowing from a tube of plastic and within a mold with the configuration provided for the baluster to be obtained, characterized in that it incorporates two lines of climbing (3), longitudinal and parallel, based on micro-perforations, conveniently distanced to determine a tear strip (4 ) that runs longitudinally the body (1) of the sheath that extends in correspondence with one of the bases or extremities (5) of the sheath on a similarly tear-off tongue (6), which opens towards the filling hole (2) of the mold cover when said tongue is located at the end of the cover provided with said hole. 2. Cover-mold for manufacturing balusters, handrails, bases. pillars, auctions and / or any other prefabricated concrete, synthetic or similar, according to claim 1, characterized in that said micro-perforations are closed by means of a sealing product that prevents the flow of water from the concrete in the filling of the sheath. 3. Machine for the production of the cover-mold of the preceding claims, which being designed to be fed directly from the blower, or indirectly through an intermediate feeder (7), with the mold covers with burrs at their ends generated in the blower, it is characterized by being constituted from a frame (8) in which a hopper (9) is established receiving said mold sleeves, with which a cutting device for burrs of the lower end of each mold cover, a cutting mechanism for practicing at one of the ends of the mold cover the filling hole thereof, a punching mechanism for obtaining the two longitudinal climbing lines of the mold cover, a cutting mechanism for burrs from the other end of the mold cover, a plug-painted mechanism of the micro-perforated longitudinal lines, and a cross-cut mechanism from one of the ends of the mold cover p To obtain the appendix of the tongue in functions of handle for elimination of the tear strip in the demoulding of the baluster, these mechanisms being duly motorized and synchronized to carry out continuously and automatically the elaboration of the mold covers. 4. Machine for the elaboration of mold-covers, according to claim 3, characterized in that the hopper (9) adopts a trunk-pyramidal configuration, rectangular, in accordance with the dimensions of the mold-covers, and is provided at its bottom with a chain of drag (10), conveniently motorized, with stops (13) for dragging the covers, which adopts an offset arrangement towards one of the sides of the hopper, while in correspondence with the other side plays a movable plate (11), actuated by pistons (12), which press the cover by conveniently positioning it on the chain (10), said hopper incorporating extreme windows (14), of which the rear one also acts as a stop that prevents the recoil from leaving the cover, but which leaves the burrs of the corresponding end of the same to the outside, while the previous one allows the exit to the outside of said cover. 5. Machine for the production of mold sleeves, according to claims 3 and 4, characterized in that immediately after said rear window (14) of the hopper (9) is a cutting blade (15) for burrs of the limb rear of the baluster, driven by a piston (16) and conveniently driven by a guide (17), said piston adopting a position such that the displacement of the blade (15) is transverse with respect to the imaginary axis of the mold-case. 6. Machine for the elaboration of mold covers, according to claims 3 to 5, characterized in that in the rear area of the hopper. in axial arrangement with respect thereto, a piston (20) is placed that displaces a support plate (19) of a motor-reducer (18) driving the cutting mechanism to obtain the filling hole, the axis of output (21) of said motor-reducer (18) parallel to the piston (20), incorporating a plate (22) on which a cutting blade (23) is eccentrically located, with a distance from the axis of the plate (22) ) according to the radius of the hole to be obtained in the sheath, while axially from said plate emerges a punch-drill (25), which extends considerably beyond the blade (23), which ends at a conical tip (26 ) and which is intended to penetrate into the mold sheath such that said punch-drill (25) acts as a means of retention and extraction for the residual disk generated by the blade (23) in the cutting of the filling mouth. 7. Machine for the production of mold sleeves, according to claim 6, characterized in that the cutting mechanism (23-25) is assisted by a blow nozzle (27), properly oriented towards the punch-drill (25), to eliminate the said residual disk corresponding to the filling hole thereof. 8. Machine for the elaboration of mold sleeves, according to claim 6, characterized in that a fork (29) is located in the immediate vicinity of the rear end of the hopper (9), in vertical and concave arrangement oriented downwards, vertically movable by a piston (30) fork that after the cutting operation to obtain the filling hole of the sheath-mold, and after the start of the recoil of the cutting mechanism, descends by framing the punch-drill (25 ) and causing the extraction of the residual disk in the total recoil of the punch-drill (25). 9. Machine for the production of mold sleeves, according to claims 3 to 8, characterized in that the punching mechanism (31) materialized in a pair is established on the frame (8) of the machine and at the exit of the hopper (9). of vertically and alternatively movable punches or needles, actuated by a piercing head (31), punches arranged transversely with respect to the trajectory of the mold-sheath and which the two lines of climbing or longitudinal micro-perforations (3) perform on it. ) determinants of the torn strip (4). 10. Machine for the elaboration of mold covers, according to claims 3 to 9, characterized in that the cutting mechanism for burrs at the other end of the mold cover, consisting of a transverse piston (33), is located next to the punching mechanism. which drives a blade that attacks laterally to the corresponding end of the mold-case. 11. Machine for the production of mold sleeves, according to claims 3 to 10, characterized in that the sealing mechanism of the micro-perforations (3) consists of a rocker arm (35), pivotally mounted on the machine frame, finished off by one of its ends in a support (36) for a paint roller (37), rotatably driven by a motor (38) and assisted by a nozzle (39) supplying the sealing product, counting the rocker (35) in its another end with a counterweight (40) of adjustable positioning, in order that the roller (37) descends by gravity towards the mold sheath, with a pressure controlled by the effect of the counterweight (40) and acting on the longitudinal lines of climbing (3) of the mold cover. 12. Machine for the production of mold sleeves, according to claims 3 to 11, characterized in that the cutting mechanism for obtaining the tear tab (6) is established at the opposite end of the frame (8), the outlet end manual of the strip (4) of the mold cover, consisting of a pair of toothed discs (48) distanced in correspondence with the longitudinal lines of climbing (3) of the mold cover and facing the latter, discs (48) assisted by a pneumatic actuator (49) and mounted on a support (50) movable vertically by a piston (51), so that said disks (48) are capable of transversely traversing the corresponding end of the mold-sheath, which is duly positioned with respect to said discs (48) by means of a jaw (47) driven by small pistons (46) mounted on a fork (45) movable longitudinally by a piston (41). 13. Machine for the production of mold sleeves, according to claims 3 to 12, characterized in that all the mechanical cutting mechanisms of the machine are replaceable by laser cutting mechanisms or by any other appropriate cutting mechanism.