• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    IMPROVED CURVING MACHINE AND CORRESPONDING METHOD. Improved bending machine comprising a support bench (14) configured to simultaneously support one or more bars (12), wherein said support bench (14) has an oblong development in relation to the length of the bars (12), and comprises at least one folding unit (15a, 15b) controllably movable along the support bench (14) in order to fold said bars (12), and fastening means (15a, 15b; 16) configured to restrict the position of the bars (12) on the support bench (14).
    公开号:BR112016028571B1
    申请号:R112016028571-9
    申请日:2015-06-05
    公开日:2021-03-09
    发明作者:Giorgio Del Fabro；Davide Luigi Petraz
    申请人:M.E.P. Macchine Elettroniche Piegatrici Spa；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [0001] The present invention relates to an improved bending machine, and also the corresponding method for bending reinforcement rods.
    [0002] The improved bending machine and the corresponding method serve to make the reinforced rods curved with desired radii of curvature. BACKGROUND OF THE INVENTION
    [0003] Bending machines for reinforcing rods are known, that is, rods used to reinforce reinforced concrete.
    [0004] It is known that, in the case of circular or semicircular platforms, the reinforcement rods must be formed in direct coordination with the profile of the platform to be made.
    [0005] Reinforcement rods may have a rounded section, a rounded section with protrusions or ribs capable of reinforcing the anchorage with concrete, a square or similar section, or a rectangular section.
    [0006] Reinforcement rods are commonly connected to each other by stirrups to create the desired reinforcement structures.
    [0007] It is also known that for curved reinforcement structures with a large diameter, segments of reinforcement rods are shaped to create, for example, by stirrups, in loco or in the forming place, the reinforcements to be anchored or integrated in the molding of concrete.
    [0008] Bending machines are known to have a substantially horizontal flat panel, but these have problems in handling both the stem segments to be bent and also the arcs forming the circle.
    [0009] These problems affect both the safety of the operators and also the physical condition of the bars, which are subject to possible deformations. It has also been tried to solve these problems by arranging a plurality of seats at the entrance and exit from the bending machine.
    [00010] On the other hand, this strategy solves some problems, such as those connected with the support of stirrups shaped like an arc of a circle, but on the other hand it is not easily practiced when two or more bars are being worked simultaneously.
    [00011] In this case, the bars remain positioned reciprocally only in cooperation with the folding unit, but downstream and upstream they tend to collapse.
    [00012] If one or more bars collapse upstream of the folding unit, there can easily be a twisting of the bars in the folding unit. In this case, problems can be created for both the folding unit, the operator, and the bars involved.
    [00013] The present invention has been derived, tested and incorporated in order to simplify the operations of forming one or more bars in an arc of a circle, or in other curves.
    [00014] In fact, the present invention allows to obtain bars formed in an arc of a circle, or with straight segments and curved segments, or spiral or elliptical or in an arc of a circle with at least two diameters.
    [00015] The purpose of the present invention, therefore, is to simplify the production of bars shaped as an arc of a circle or as a circle, avoiding hazards for operators, organizational and operational complications, product quality and constancy and the variability of the product. curvature. SUMMARY OF THE INVENTION
    [00016] The present invention is defined and characterized in the independent claims, while the dependent claims describe other features of the invention or variants for the main idea of the invention.
    [00017] According to the invention, an improved bending machine provides a support bench, with a mainly longitudinal development, in which the bars to be worked are arranged.
    [00018] Fixing means are provided in a desired position on the folding bench, and are configured to selectively fix the position of the bars to be worked.
    [00019] The support bench can have a length substantially coordinated with the length of the bars that are worked on each occasion.
    [00020] The improved bending machine comprises at least one folding unit associated with the support bench and configured to bend the bars.
    [00021] The support bench can be equipped with guides that cooperate with at least one at least one folding unit, which is equipped to move along the support bench in a desired and controlled manner.
    [00022] When the fixing means are centrally located with respect to the length of the support bench, they can be substantially stable and suitable for fixing the bars.
    [00023] According to a variant, the fixing means can be totally or partially retracted in relation to the support bench.
    [00024] According to another variant it can be provided that it is a folding unit that performs the function of the fixing means, at least temporarily. In this case, the folding unit can be located centrally for the support bench, or in a desired position, still terminal.
    [00025] The folding unit has two contrast rollers between which the bars are adhered.
    [00026] The folding unit further comprises a bending roll that cooperates with guide means and with a positioning device, in order to selectively position, both continuously and point by point, the bending roll on the bar or bars to be processed .
    [00027] In particular, the bending roll acts on the bar, pushing to bend around one of the contrast rollers.
    [00028] A programmable computerized system controls, commands and manages the whole. BRIEF DESCRIPTION OF THE DRAWINGS
    [00029] These and other features of the present invention will be apparent from the following description of some forms of modality, given as a non-restrictive example with reference to the accompanying drawings in which: - Fig. 1 shows an improved bending machine according to the invention; - Fig. 2 shows the bending machine of FIG. 1 in a first operating position; - Fig. 3 shows the bending machine of FIG. 1 in a second operating position; - Fig. 4 shows the bending machine of FIG. 1 in a third operating position; - Fig. 5 shows the bending machine of FIG. 1 in a final operating position; - Fig. 6 shows a variant of the bending machine of FIG. 1 in a first operating position; - Fig. 7 shows the bending machine of FIG. 5 in a second operating position; - Fig. 8 shows the bending machine of FIG. 5 in a third operating position; - Fig. 9 shows the bending machine of FIG. 5 in a fourth operating position; - Fig. 10 shows a possible operating position of the bending machine of FIG. 1.
    [00030] To facilitate understanding, the same reference numbers were used, where possible, to identify identical common elements in the drawings. It is understood that elements and characteristics of one form of modality can be conveniently incorporated into other forms of modality without further clarification. DETAILED DESCRIPTION OF MODE FORMS
    [00031] We must now refer in detail to the various forms of modality of the present invention, of which one or more examples are shown in the accompanying drawings. Each example is provided by way of illustration of the invention and should not be construed as a limitation thereof. For example, the features shown or described so far as they are part of a form of modality can be adopted, or in association with, other forms of modality to produce another form of modality. It is understood that the present invention should include all such modifications and variants.
    [00032] According to the present invention, an improved bending machine 10 is shown schematically in fig. 1 and is configured to bend, shape or bend the bars 12 with different characteristics and nominal diameters.
    [00033] The bending machine 10 is configured to operate on one or more bars 12 according to the particular work needs required.
    [00034] Here and here in the description, reference will be made to the work of a single bar 12 although it is clear that the bending machine can work more bars 12 at the same time.
    [00035] The bending machine 10 comprises a support bench 14 provided to support the bar 12 during work.
    [00036] The support bench 14 has a mainly oblong development and a length substantially equal to the length of the bars 12 that it needs to support.
    [00037] The support bench 14 can be located substantially horizontally or sub-horizontally, although its vertical orientation is not excluded.
    [00038] The bending machine 10 also comprises at least one folding unit, in this case two folding units 15a and 15b configured to bend the bar 12 to the desired shape.
    [00039] The folding units 15a and 15b are installed in respective moving carts 18 which are configured to move the folding units 15a and 15b along an axis of movement X.
    [00040] In the form of the embodiment of figs. 1 and 2, the folding units 15a and 15b are arranged aligned along the axis of movement X and can be moved reciprocally closer and farther from each other.
    [00041] The X movement axis develops substantially along the longitudinal development of the support bench 14.
    [00042] The trolleys 18 can be moved on the support bench 14 in a desired and controlled manner, each trolley 18 being managed by itself or in relation to the other trolley 18.
    [00043] According to a possible solution, the bending machine 10 comprises movement members associated with the trolleys 18 to allow the latter to move on the support bench 14.
    [00044] Movement members, not shown in the drawings, can include screw mechanisms, chain or rack mechanisms.
    [00045] According to a possible form of modality, the bending machine 10 comprises guides 17 arranged substantially parallel with the movement axis X and in which the carriages 18 are installed in a sliding manner.
    [00046] Each folding unit 15a and 15b comprises two contrast rollers 20a and 20b, located in an opposite position to each other and during use, the bar 12 is made to pass between them.
    [00047] At least one of the contrast rollers, in this case the contrast roll 20a is provided with positioning means 22 configured to allow the contrast roll 20a to move selectively closer to / further from the contrast roll 20b, than in order to adjust the gap of the bar 12 and thus the pressure that the contrast rollers 20a and 20b exert on the bars 12. The pressure exerted on the bars 12 can be intended to remove the bar 12 or, in a possible variant, to exert an action retaining or fixing on bar 12.
    [00048] In possible solutions, at least one of the folding units 15a, 15b, in this case both, still perform the function of fastening means on the bar 12.
    [00049] In this form of modality, it is provided to restrict the rotation of the contrast rollers 20a and 20b and to press them together to exert a retention action on the bar 12.
    [00050] According to a possible solution, at least one of the contrast rollers, in this case the contrast roll 20b, is motorized.
    [00051] This solution allows to move the respective folding unit 15a or 15b along the extension of the bar 12 in order to allow the folds to be made, as will be clear hereinafter.
    [00052] In this solution, it may not be necessary for the cart 18 to be motorized, at least during the working step of bars 12, since the action of the motorized contrast roller 20b on bars 12 determines the controlled and desired advance of cart 18 .
    [00053] In fact, the contrast roller 20b, which acts on the bar 12, exerts a frictional action with the contrast roller 20a on the bar 12 and pulls with it the corresponding folding unit 15a and 15b and the cart 18.
    [00054] The folding units 15 further comprise, in cooperation with the contrast rollers 20a and 20b, at least one bending roll 24 configured to exert a predefined deformation on the bar 12 between the contrast rollers 20a and 20b. The bending roller 24 is located in an external position with respect to the contrast rolls 20a and 20b.
    [00055] In particular, the bending roller 24 determines a predefined curvature of the bar 12 around at least one of the contrast rolls 20a, and 20b.
    [00056] The bending roller 24 can be associated with guide means 25 and for a positioning device 27, configured to move the bending roller 24 with respect to the contrast rollers 20a, 20b, in the guide means 25.
    [00057] The guide means 25 can be arranged with an orientation incident with the movement axis X, that is, incident with the bar 12 in order to allow the bending roller 24 to exert the desired bending action.
    [00058] The positioning of the bending roller 24 can be continuous and / or discrete.
    [00059] The position of the bending roller 24 with respect to the contrast rolls 20a and 20b determines the curvature of the bar 12.
    [00060] In fact, the bending roller 24 can remain fixed with respect to the contrast rollers 20a and 20b all the time that the bar 12 is worked, or, according to a variant and in the case of bends with different radii, the The position of the roller 24 is updated each time, with respect to the contrast rolls 20a and 20b, by the commands transmitted by the positioning device 27 of the bending roller 24.
    [00061] The position of the bending roller 24 can be fixed, for example, orthogonal to the bar 12, or inclined with respect to it by a different and variable angle with respect to the desired radius of curvature of the bar 12.
    [00062] In other variants of the invention, the position of the bending rollers 24 is the same for both folding units 15a and 15b, or different from each other, for example, to obtain an arc of a circle with different values of curvature.
    [00063] In other variants, the position of the bending rollers 24 is continuously variable during forming operations.
    [00064] In the form of the embodiment shown in figs. 8 and 9, the position of the bending roller 24 is continuously variable during the working of the bars 12.
    [00065] According to a possible implementation, each of the folding units 15a and 15b can comprise a contact roller 34, arranged with respect to the bar 12, on the same side as the bending roller 24 is located.
    [00066] The contact roller 34 is positioned in a fixed position with respect to the cart 18 to move the folding unit 15a, 15b.
    [00067] In each folding unit 15a and 15b, the contact roller 34 is arranged so that the contrast rollers 20a, 20b are interposed between the contact roller 34 and the bending roller 24. Thus, when the bar 12 is bent by the bending roller 24, the portion of the bar located upstream of the bent portion that is made does not move, rendering the action of the bending roller 24 null.
    [00068] According to a possible variant, not shown in the drawings, at least one of the folding units 15a and 15b is provided with fastening means installed on board the respective cart 18 and configured to restrict the position of the bar 12 to that of the respective folding unit 15a, 15b.
    [00069] According to a variant of the invention (fig. 6), the bending machine 10 comprises fixing means 16 interposed between the folding units 15a and 15b and configured to fix the bar 12 at least during forming.
    [00070] The fixing means 16 can comprise a lathe, for example.
    [00071] According to the invention, the action of the fixing means 16 can be regulated depending on the desired fixation.
    [00072] According to a possible solution, the fixing means 16 can be fixed vertically or they can be retracted with respect to the support bench 14, to move to a position of non-interference with a possible movement of the bar 12 during the loading or unloading of the shaped bar 12.
    [00073] According to the forms of modality shown in figs. 1 to 5, the bending machine 10 comprises folding units, respectively 15a and 15b, which alternately perform the function of fastening means.
    [00074] In this solution, the following modes of operation can be achieved: - the folding unit 15a remains stationary at one end of the guides 17 and acts as a lathe while the folding unit 15b advances (fig. 2) at least as far as half of the bar 12, folding it to one or more predetermined folds, and then interrupts to assume the function of the fixing means (fig. 3). When the folding unit 15b is stationary, the folding unit 15a advances (fig. 4), possibly folding the bar 12 until it substantially comes into contact with the folding unit 15b (fig. 5). In this way, both folding units 15a and 15b obtain the corresponding folding portions of the bar 12; - the folding unit 15a moves to an intermediate position along the length of the bar 12 and acts as the vise, and the folding unit 15b advances along the bar 12, folding it in a desired way until it comes in contact with the unit 15a. After that, it will be the folding unit 15a, possibly and if necessary, to move to the desired position to perform another folding.
    [00075] In the solution shown in figs. 6 to 7, the fixing means 16 are arranged in an intermediate position along the longitudinal extension of the support bench 14.
    [00076] In this solution, the folding units 15a and 15b advance simultaneously from the ends of the support bench 14 to the fixing means 16, where they stop (fig. 7). During their movement, the folding units 15a and 15b perform the corresponding bending operations, since the bar 12 is fixed by the fixing means 16.
    [00077] By properly regulating the action of the folding units 15a, 15b, it is possible to obtain the bars 12 formed in a circle (fig. 8) or, if the reciprocal position between the bending roller 24 and the contrast rolls 20a and 20b is continuously modified, for example, a spiral shape is obtained (fig. 9).
    [00078] In the form of modality in fig. 1, the bending machine 10 comprises a bar feed unit 29, in which the bars 12, pre-cut or not, are arranged in the form of bundles.
    [00079] The bar feed unit 29 can also comprise an extractor 30 to take one or more bars 12 from the bar feed unit 29 and then make them available to the support bench 14 for the folding units 15a and 15b.
    [00080] Downstream of the extractor 30 there is a cutting element 31, such as a shear, to selectively cut the one or more bars 12 to a desired length.
    [00081] Subsequent to the cutting element 31, a feeding bench 32 is arranged, which develops in a longitudinal manner and adjacent to the support bench 14 to feed the bars 12 to the rear.
    [00082] A stretch unit 33 is also associated with the feed bank 32, which operates in cooperation with the extractor 30, and provided to extract the individual bars 12 from the bar feed unit 29.
    [00083] The stretch unit 33 is selectively movable with respect to the feed bank 32 to take the bars 12 extracted by the extractor 30 and take them to the feed bank 32.
    [00084] A measuring device can cooperate with the drawing unit 33, for example, integrated with the cutting element 31 or, alternatively, with the drawing unit 33. The measuring device is configured to selectively control the operation of at least minus one of the extractor 30, the cutting element 31 or the stretching unit 33.
    [00085] It is clear that modifications and / or part additions can be made to the improved bending machine 10 and the corresponding method as described so far, without departing from the scope and scope of the present invention.
    [00086] For example, as shown in fig. 10, it can be provided that in at least one of the two folding units 15a and 15b, the bending roller 24 and the contrast roller 20a adjacent to it, and located on the same side with respect to bar 12, are selectively movable away each other from the contrast roller 20b.
    [00087] Thus, in the condition where the first folding unit 15a and the second folding unit 15b are in contact with each other, the bending roller 24 and the contrast roller 20a of one of the folding units, in this case the first folding unit 15a, moves away from the contrast roller 20a. In this condition, the rollers of the other folding unit 15b are activated and in particular the motorized contrast roll 20a determines an advance of the bar 12 in order to complete the folding of the segment of the bar 12 which is between the first 15a and the second unit folding 15b.
    [00088] According to a possible formulation of the present invention, it can be provided that, once the folding has been completed, and if it has not been done correctly, the bending rollers 24 are taken to a position of non-interference with the bar 12 and the folding units 15a and 15b are moved reciprocally with each other, keeping the respective contrast rollers 20a and 20b in contact with the bar 12. In this way, it is possible to straighten the bar 12 already folded, so as to possibly perform the folding operation again.
    [00089] It is also clear, although the present invention has been described with reference to some specific examples, a person skilled in the art should certainly be able to achieve many other equivalent forms of improved bending machine 10 and the corresponding method, having the characteristics as defined in the claims and thus all are within the protection field defined in this way.
    权利要求:
    Claims (13)
    [0001]
    1. Improved bending machine comprising a support bench (14) configured to simultaneously support one or more bars (12) characterized by the fact that said support bench (14) has an oblong development in relation to the length of one or more bars (12), and wherein said bending machine comprises at least one folding unit (15a, 15b) controllably movable along said support bench (14) and along said one or more folding bars said one or more bars, and fixing means (15a, 15b; 16) configured to restrict the position of said one or more bars (12) on said support bench (14), wherein at least one folding unit comprises two contrast rollers with adjustable intervals and one or more bars pass between them and are gripped by the two contrast rollers, wherein the at least one folding unit further comprises an adjustable bending roll in relation to one or more bars to the two contrast rolls, and the bending roller determines a predefined curvature of one or more bars around one of the two contrast rolls, as the at least one folding unit is moved along the support bench, where said machine further comprises guide means having an orientation incident with a axis of movement of one or more bars along the support bench, and the orientation of the guide means determines the bending action of the bending roller and a locking device. positioning in said guide means, wherein the positioning device is configured to move the bending roller in relation to the contrast rollers.
    [0002]
    2. Bending machine according to claim 1, characterized in that said fixing means (16) restrict the position of the bar to the position of the respective folding unit (15a, 15b).
    [0003]
    Bending machine according to claim 2, characterized in that the at least one folding unit has two or more folding units that alternately perform a fixing function of the fixing means.
    [0004]
    4. Bending machine according to claim 1, characterized by the fact that the fixing means (16) comprise an adjustable vise for attaching to one or more bars, in which the adjustable vise is fixed in a vertical or retractable manner with relation to said support bank (14).
    [0005]
    5. Bending machine, according to claim 4, characterized by the fact that the lathe is fixed vertically in relation to said support bench (14).
    [0006]
    6. Bending machine, according to claim 4, characterized by the fact that the lathe can be moved in a retractable way in relation to the said support bench (14).
    [0007]
    Bending machine according to claim 1, characterized in that the at least one folding unit (15a, 15b) moves independently along said support bench (14).
    [0008]
    Bending machine according to claim 1, characterized by the fact that each of said at least one folding unit (15a, 15b) comprises a contact roller arranged, in relation to one or more bars, on the same side wherein the bending roller is located, said contact roller being arranged in each folding unit, so that the contrast rollers are interposed between the contact roller and the bending roller.
    [0009]
    Bending machine according to claim 1, characterized by the fact that at least one of the two contrast rollers (20a, 20b) is motorized.
    [0010]
    Bending machine according to claim 1, characterized by the fact that each of the at least one folding unit (15a, 15b) is installed on trolleys (18) slidable on guides (17) along an axis of movement.
    [0011]
    11. Bending machine according to claim 1, characterized by the fact that the bending roller is one connected to the positioning device configured to move the bending roller.
    [0012]
    12. Bending method characterized by the fact that it comprises: placing at least one bar on a support bench with an oblong development; passing said at least one bar between two contrast rollers, wherein the two contrast rollers hold at least one bar; restricting a position of said at least one bar on said support bench with securing means; moving, in a controllable manner, at least one folding unit, comprising at least two contrast rollers and a bending roll, along said support bench and along said at least one bar; and bending at least one bar at a predefined curvature around one of said contrast rollers, moving said bending roller relative to the contrast rollers and towards said at least one bar by a positioning device in the means of guide, wherein said guide means are arranged with an orientation incident with a axis of movement that develops along the oblong development of the support bench, and the guide means determine a bending action of the bending roller.
    [0013]
    13. Bending method according to claim 12, characterized by the fact that at least one of the aforementioned contrast rollers is motorized and the action of the motorized contrast roller on at least one bar determines a controlled advance of a trolley on which at least one folding unit is installed, in which the cart is movable on the bench.
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    法律状态:
    2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-01-19| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-09| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 05/06/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    ITUD2014A000097|2014-06-06|
    ITUD20140097|2014-06-06|
    PCT/IB2015/054277|WO2015186112A1|2014-06-06|2015-06-05|Bending machine and corresponding method|
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