Machine for making intertwined chains with a ribbon.

Description

1 / 22 MACHINE FOR MAKING INTERLACED CHAINS WITH A RIBBON FIELD OF THE INVENTION

[001] The present invention relates to the field of fashion accessories and, more particularly, to the field of chains and necklaces with a ribbon interwoven in the links.

[002] In more detail, the invention relates to a machine and process for interlacing a ribbon or blanket within the links or loops of a chain in a wavy pattern. BACKGROUND OF THE TECHNIQUE

[003] In the previous technique, ornamental chains are made with interwoven ribbons (see Figure 1) to be used to embellish fashion accessories, for example, such as bags, shoes and clothing.

[004] In particular, bags are known that have handles and shoulder straps made of chains with a ribbon, for example, made of leather, imitation leather or fabric, interwoven on the inside.

[005] Currently, the operation of inserting the ribbon into the chain is mainly done manually and is performed by skilled craftsmen.

[006] Obviously, this operation requires a lot of time and skilled labor to ensure that the final work is perfect and free of damaged parts.

[007] European patent application no. EP 2995707A1 describes a machine for filleting blankets within the links of a chain in a wavy pattern. However, this solution has some disadvantages highlighted below.

[008] In this suggested solution, the chain is moved by means of a clamp that tightens, in successive stages, the chain itself with the flexible material or blanket already inserted in the chain. This method can cause initial tension to the flexible material, possibly deteriorating or damaging it. Furthermore, the flexible material is inserted into the chain links by means of a punch, and this necessarily implies a second tension to which the material is subjected. In fact, the small size of the hole in each chain link in Petition 870250087828, dated 09 / 29 / 2025, page 6 / 147 2 / 22 Comparison with the thickness of the inserted material, which at this stage is double due to the insertion method, must be considered. In the next stage, where the blanket is pulled while the free end passes through the loop, the element designed for this function, which is only studied to pull the blanket, cannot provide adequate tension. This affects the final result, preventing a high-quality product. Finally, since the end of the blanket to be inserted is free, there is no control over its positioning and, in particular, with each successive insertion it is not possible to verify whether the blanket is correctly positioned in relation to the hole through which it must pass. As a result, it may be misaligned with the punch, which may fail to engage it, or engage it incorrectly, damaging it or inserting it rotated. As a result, a solution to achieve the necessary production speed with a technique capable of overcoming the problems of lack of precision and quality described above has not yet been studied. SUMMARY OF THE INVENTION

[009] The objective of the present invention is to automate the process of inserting a ribbon into a chain. An additional objective is to speed up the step of making chains with interwoven ribbons or blankets.

[010] Another objective of the present invention is to obtain a machine that makes it possible to produce chains with interwoven ribbons, in which the product produced is of high quality and without inaccuracies.

[011] Naturally, another objective of the present invention is to manufacture a machine that allows ribbons to be inserted into chains in order to reduce the need for skilled craftsmen to perform this operation.

[012] These and other purposes, which will be more apparent below, are achieved by a machine for filleting a ribbon or blanket within the links or loops of a chain in a wavy pattern, as defined in claim 1.

[013] In addition, the present invention also relates to a method for Petition 870250087828, dated 09 / 29 / 2025, page 7 / 147 3 / 22 Interweave a ribbon within the links of a chain in a wavy pattern.

[014] The present invention relates to a machine for interlacing a ribbon within the links of a chain in a wavy pattern; the machine comprises a controlled chain feed system adapted to translate the chain in a horizontal plane in predetermined steps to position the chain links in the processing zone;

[015] a tape insertion system comprising a gripping block adapted for translation in a vertical direction, orthogonal to the horizontal plane, and provided with a first gripper and a second gripper. The grippers are adapted to grip and hold a rigid guide element provided in a first terminal end portion of the tape and to guide or drive the tape cyclically through the chain links, and a tape driving system comprising two arms arranged on opposite sides with respect to the horizontal plane of the controlled advance system on which the chain is positioned, adapted for oblique translation, and wherein each arm is provided with a finger-like end, adapted to engage the tape to cause it to slide and drive it so as to complete the insertion of the tape into the chain link after the passage of the rigid guide element.

[016] In some embodiments, the controlled advance system provides an advance surface, preferably horizontal, on which the chain is arranged and moved linearly along the longitudinal geometric axis by means of a carriage that carries two arms equipped with respective hooks that allow the correct positioning of the link on the vertical geometric axis of the gripping block.

[017] Alternatively, the movement of the chain is controlled by a photocell that allows the correct positioning of the link on the vertical geometric axis of the gripping block.

[018] The tape insertion system comprises a gripping block adapted to move vertically along a guide rail, wherein said gripping block comprises a first gripper and a second gripper. Petition 870250087828, dated 09 / 29 / 2025, page 8 / 147 4 / 22 adapted for gripping and securing the rigid guide element.

[019] The first gripper and the second gripper comprise their respective jaws, and the movement of the grippers is activated by a pneumatic piston, which drives or pulls the jaws to bring them into the two open or closed positions by means of the rotation of two toothed wheels.

[020] The belt drive system comprises two arms arranged on opposite sides with respect to the plane of the controlled advance system, wherein said arms are adapted to translate obliquely in a respective guide rail.

[021] Each arm is fitted with a finger-like end adapted to fit into the tape. In preferred embodiments, the finger-like end is a pull-out pin and is fitted with small holes to create an air cushion to minimize friction between the tape and the finger-like end. Alternatively, the finger-like end is a pull-out pin and is fitted with needle or ball bearings.

[022] Preferably, there is also a counterfinger that is used to restrain the tape and prevent it from twisting.

[023] The present invention further relates to a method for interlacing a ribbon within the links of a chain in a wavy pattern, comprising the following steps: a) prepare the tape with a rigid guide element at one end, b) configure a controlled current advance system, c) configurar um sistema de inserção de fita, d) configure a double tape drive system, (e) to position, by means of said controlled advance system, the chain so that the link to be processed is on the vertical geometric axis of the insertion system, f) to grip, using the insertion system, the rigid guide element in a portion of the space that is below, or respectively above, the controlled chain feed system, Petition 870250087828, dated 09 / 29 / 2025, page 9 / 147 5 / 22 g) complete the insertion of the rigid guide element into the link and guide the tape through the link being processed; h) operate the insertion system to move along a guide rail in a direction adapted to insert the tape into the link being processed, so as to move in a vertical direction from bottom to top, or from top to bottom, respectively, through the link being processed; i) continue moving the insertion system until the guide rail reaches its limit stop, j) Invert the insertion system by 180 degrees, so as to keep the tape stretched and perpendicular to the chain; k) operate the tape drive system that is on the same side of the insertion system relative to the current to travel along a guide rail in the direction of tape approach, l) grip the tape with the drive system to keep it taut, m) operate the drive system to move again along the guide rail to return to the initial position so as to bring the tape back, so as to make the tape slide further through the link being processed, provided that said tape provides sufficient tension to prevent slippage of the drive system, and n) repeat steps e) am) for all links in the chain.

[024] Other aspects and advantages of the invention are described below, and distinctive features are given in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [ 025] Other features and advantages of the invention will become more apparent from the description of a preferred, but not exclusive, embodiment shown as an indicative and non-limiting example in the accompanying drawings, in which: Figure 1 shows an example of a chain with a leather strap interwoven between the links. Figure 2 shows an example of a leather strap. Figures 3a and 3b show examples of a leather strap prepared for Petition 870250087828, dated 09 / 29 / 2025, page 10 / 147 6 / 22 processing with the machine according to the invention, Figure 4 shows an example of a stream to be processed. Figures 5a and 5b show perspective views of the machine according to the present invention. Figures 6 and 7 show perspective views of the details of the machine base according to the present invention. Figures 8-11 show details of the insertion system. Figures 12-17 show details of the drive system. Figures 18-35 show some processing steps of the method according to the invention.

[026] The parts, according to the present description, are shown in the drawings, where appropriate, in order to employ conventional symbols, showing only the specific details that are pertinent to the understanding of the embodiments of the present invention, so as not to highlight details that will be immediately apparent to a person skilled in the art, with reference to the description given below. DETAILED DESCRIPTION OF THE INVENTION

[027] The present invention relates to the field of fashion accessories, for example, such as belts, sandals, shoes, bags or wallets that have straps and shoulder straps with chain elements interwoven with a ribbon or blanket made of fabric, leather or synthetic materials, such as eco-leather. The ribbon is interwoven into the links of the chain.

[028] Obviously, these chain elements interwoven with ribbon can also be used as decoration on clothing, for example, as neckline trim on sweaters, tops, sweaters or outerwear such as jackets, parkas or coats. More specifically, the invention relates to a machine for threading a ribbon or blanket inside the links or loops of a chain in a wavy pattern.

[029] Figure 1 shows a piece of chain C with a leather strap N interwoven between the chain links. Petition 870250087828, dated 09 / 29 / 2025, p. 11 / 147 7 / 22

[030] With reference to the Figures, a machine for inserting a tape or blanket into the links or loops of a chain in a wavy pattern is indicated by the reference numeral 1 as a whole.

[031] The operation of machine 1 for inserting a tape N or blanket into a chain C is described with the help of the Figures.

[032] The current being processed is indicated as a whole by the letter C, while a link of the current C is indicated as a whole by the letter M.

[033] The C chain consists of a succession of closed or decomposable rings A, connected to each other with the possibility of relative movement. Each ring A defines a link M of the C chain.

[034] Chain C exhibits a substantially longitudinal extension, that is, a length LC and a width LLC, which may vary depending on the use of the finished product. In addition, chain C also has a thickness SC, which is negligible compared to the length LC.

[035] The LLC width of chain C is given by the outside diameter of each individual ring A or link M and of chain C. Each link M has a through hole inside which has a diameter DC.

[036] The tape or blanket, which can be made of any flexible and non-rigid material, for example, leather, hide, imitation leather, eco-leather, textile, non-woven fabric, cord, synthetic materials, etc., is indicated by the letter N as a whole.

[037] The N strip is an element that has two free ends N1 and N2 and has a substantially longitudinal extension with a length LN, a width LLN and a thickness SN that is negligible compared to the length LN.

[038] Before the start of processing operations, tape N is prepared for use with machine 1.

[039] In particular, in a first embodiment, a first free end N1 is coated with a layer of metal (for example, making a substantially flat strip made with a sheet of brass) to create an element Petition 870250087828, dated 09 / 29 / 2025, p. 12 / 147 8 / 22 rigid element that is used as a guide element G for inserting the N tape into the M links of the C chain. In particular, the guide element G has a substantially flat shape to facilitate interaction with the machine grippers and for proper orientation (if it were cylindrical, it would be more difficult to position to avoid tape twisting).

[040] In greater detail, the rigid guide element G is made by covering the first free end N1 of the N-shaped sheet by an appropriate length, so that the rigid guide element G can cooperate with the machine elements (grippers) to insert the N-shaped sheet into the chain C. In particular, the maximum width clearance of the rigid guide element G must be such that it facilitates the insertion and sliding of the N-shaped sheet within the chain links M. Therefore, this diameter will be slightly smaller than the inner diameter DC of each link M to facilitate insertion and sliding.

[041] The said rigid guide element G for inserting tape N performs the function of a needle to facilitate the insertion of tape N into chain C.

[042] During processing, the rigid element G guides the insertion operations of the N tape into the C stream.

[043] In an alternative embodiment, the guide element is a real needle GA equipped with an eye GAC in which the ribbon N can be threaded. The needle GA, which makes the rigid guide element G for inserting the ribbon N into the chain C, is substantially flat in shape to facilitate interaction with the machine grippers and for proper orientation (if it were cylindrical, it would be more difficult to position it to avoid twisting the ribbon). In particular, the first free end N1 of the ribbon N is threaded through the eye GAC and is folded back and locked in place, for example, with double-sided tape, glue, or fastened with adhesive tape, or locked with a fastening element.

[044] In particular, the width LLN of tape N is chosen so that tape N fills link M of chain C and remains taut.

[045] In particular, the N ribbon has an LLN width adapted to be received within the M link of the C stream and, in particular, has a corresponding width Petition 870250087828, dated 09 / 29 / 2025, p. 13 / 147 9 / 22 or slightly larger than the width of each through hole of the chain C which has a diameter DC, so that it can be inserted inside the links M of the chain C. In detail, the width LLN of the N tape corresponds to or is slightly larger than the internal diameter DC of the link M.

[046] Furthermore, also in the N tape preparation phase, the N tape end opposite the rigid guide element G or GA, and indicated by reference N2, is tied or blocked in some way (with a retaining element F) to prevent it from passing through link M. In this way, a limit stop element is created to prevent the N tape from slipping or passing through chain C.

[047] In alternative embodiments, the final N2 can already be restricted to the stream to prevent its escape during subsequent processing steps.

[048] The machine 1 for inserting tape N into links M of a chain C is substantially and schematically illustrated by means of three main components: - a controlled advance system 10 of the C-chain adapted to translate the C-chain horizontally in predetermined steps to position the M-links of the C-chain in the processing zone; - an insertion system 20 of the N tape comprising a gripping block 22 adapted for translation in the vertical direction Z and provided with a first clamp 23 and a second clamp 24, wherein the clamps 23,24 are adapted to grip and hold a rigid guide element G or GA provided at the first terminal end N1 of the N tape and guide or lead the same cyclically through the links M of the chain C; - a tape advance system 30, comprising two arms 32 and 33 arranged on opposite sides in relation to the controlled advance system 10 on which the chain C is placed, adapted to translate obliquely, and in which each arm is provided with a finger-like end, adapted to engage with the tape N to cause it to slide and guide it in order to complete the insertion of the tape N into the link M of the chain C after the passage of the rigid guide element G or GA. Petition 870250087828, dated 09 / 29 / 2025, page 14 / 147 10 / 22

[049] The method for interlacing a ribbon N within the links M of a chain C in a wavy pattern comprises the following steps: a) prepare the N tape with a rigid guide element G or GA, b) configure a controlled advance system 10 of the C current, c) configure a tape insertion system 20 N, d) configure a 30 N tape drive system, (e) to position, by means of said controlled advance system 10, the chain C so that the link Mi to be processed is on the vertical geometric axis Z of the insertion system 20, f) to grip, using the insertion system 20, the rigid guide element G or GA in a portion of the space that is below, or respectively above, the controlled advance system 10 of the chain C, g) complete the insertion of the rigid guide element G or GA into link Mi and guide the tape N through the link Mi that is being processed; h) operate the insertion system 20 to traverse a BGI guide rail in a direction adapted to insert the N tape into the Mi link being processed, so as to move in the vertical direction from bottom to top, or from top to bottom, respectively, through the Mi link being processed; i) continue moving the insertion system 20 until the limit stop of the BGI guide rail, j) Invert the insertion system 20 by 180 degrees, so as to keep the N tape stretched and perpendicular to the C chain; k) operate the N tape drive system 30, which is on the same side as the insertion system 20 with respect to current C, to travel along a guide rail BGC in the direction of approach of the N tape, l) grasp the N tape with the 30 drive system to keep it taut, m) operate the 30 drive system to travel again along the BGC guide rail to return to the initial position so as to bring the N tape back, so as to make the N tape slide further through the Mi link that is being processed, provided that said N tape provides sufficient tension to prevent slippage of the system. Petition 870250087828, dated 09 / 29 / 2025, p. 15 / 147 11 / 22 driving 30, and n) repeat steps e) am) for all Mi+1 links of chain C.

[050] Again, with reference to Figures 18-35, the operating steps of machine 1 referred to in the preferred embodiment are described in more detail.

[051] No references have been added to some of the Figures to avoid overloading them.

[052] In particular, a complete processing cycle involves the following steps:

[053] - a first stage is performed by the insertion system 20 when the chain C is stopped in the processing position. In this first stage, the chain C is positioned so that the first link M1 is in the insertion region; the double gripper 23 and 24 of the gripping block 22 engages with the rigid guide element G or GA at the first terminal end N1 of the N tape, i.e., both grippers 23 and 24 grip the rigid guide element G or GA in a portion of the space that is below the controlled advance system 10 of the C chain and guide it in the movement, so as to move in a vertical direction from bottom to top (as shown in the Figures), through the first link M1 of the C chain located on the vertical geometric axis of the gripping block 22; the N tape, as mentioned earlier, may have a retaining element F or limit stop that locks the second end N2 and prevents the N tape from escaping from the first link M1 of the C chain;In some variants for processing requirements, the N tape is free and is held in place by a locking element present in the machine, or already attached to the chain (for example, it is sewn to the first link M1);

[054] - a second stage begins when the first terminal end N1 of the N tape has been introduced, by virtue of the rigid guiding element G or GA, into the first link M1 of the C chain, and the first clamp 23, closest to the C chain, releases its handle over the rigid guiding element G or GA (see Figure 18), and the two claws 23a and 23b are opened and retracted towards the guide rail so as not to interfere with the C chain itself during movement. Petition 870250087828, dated 09 / 29 / 2025, p. 16 / 147 12 / 22 vertical movement of the first clamp 23 along the geometric axis Z, while the second clamp 24 remains closed and continues its movement in the vertical direction from bottom to top to complete the insertion of the rigid guiding element G or GA into the first link M1 of the chain C;

[055] - a third stage, in which, when the first clamp 23 has passed beyond the current C, that is, is above the controlled advance system 10 and above the current C, it is closed again (see Figure 19) in order to extract the two grippers 23a and 23b to grip again the rigid guide element G or GA installed at the first terminal end N1 of the N tape;

[056] - a fourth stage, in which the second clamp 24 releases its grip on the rigid guiding element G or GA (see Figure 20), and the two claws 24a and 24b are opened and retracted towards the guiding rail, so as not to interfere with the chain C itself during the vertical movement of the second clamp 24 in Z, while the first clamp 23 continues its movement in the vertical Z direction from bottom to top to continue inserting the tape N into the first link M1 of the chain C;

[057] - a fifth stage, in which, when the second clamp 24 has also passed beyond the chain C, it is closed again (see Figure 21) so as to extract the two grippers 24a and 24b to grip the tape N once more on the part that surrounds the rigid guide element G or GA;

[058] - a sixth stage, in which the insertion system block 20, after reaching the limit stop on its rail, rotates 180 degrees (see Figures 22 and 23), so as to keep the tape N stretched and perpendicular to the chain C;

[059] - a seventh stage begins when a first arm 32 of the N tape drive system 30 (that is, the arm that is on the same side of the gripping block 22 of the insertion system 20 with respect to chain C) runs along its rail towards chain C until it engages with the N tape by means of a withdrawable pin P1 which, like a finger, grips the tensioned N tape (see Figures 24 and 25) and then runs again along its rail to return to its initial position, so as to bring the N tape behind it, so that the N tape Petition 870250087828, dated 09 / 29 / 2025, page 17 / 147 13 / 22 pass through the first link M1 of chain C until it brings the opposite end N2 (and the stop element F) to the limit stop position; in subsequent cycles, the limit stop element is given by the tape N itself, which, once stretched, provides sufficient tension to prevent slippage of arm 32;

[060] - an eighth step, in which chain C translates to bring the second link M2, adjacent and subsequent to the first link M1, to the vertical geometric axis Z of the gripping block 20;

[061] - a ninth step is performed by the insertion system 20 when the chain C is stopped in the processing position so that the second link M2 is in the insertion region; the double gripper 23 and 24 of the gripping block 22 is still engaged in the rigid guide element G or GA and drives the same in the movement, so as to move in the vertical direction, this time from top to bottom (as shown in Figure 26), through the second link M2 of the chain C located on the vertical geometric axis of the gripping block 22;

[062] - a ninth step begins when the first terminal end N1 of the N tape has been introduced, by means of the rigid guiding element G or GA, into the second link M2 of the C chain, and the first clamp 23, closest to the C chain, releases its grip on the rigid guiding element G or GA (see Figure 27), and the two claws 23a and 23b are opened and retracted towards the guide rail so as not to interfere with the C chain itself during the vertical movement of the first clamp 23 along the geometric axis Z, while the second clamp 24 remains closed and continues its movement in the vertical direction to complete the insertion of the rigid guiding element G or GA into the second link M2 of the C chain;

[063] - an eleventh stage, in which, when the first clamp 23 has passed beyond the current C, that is, is under the current C and under the controlled advance system 10, it is closed again so as to extract the two grippers 23a and 23b to grip the rigid guide element G or GA disposed at the first terminal end N1 of the N tape once more;

[064] - a twelfth stage, in which the second clamp 24 releases its Petition 870250087828, dated 09 / 29 / 2025, page 18 / 147 14 / 22 grip on the rigid guide element G or GA (see Figure 28), and the two grips 24a and 24b are opened and retracted towards the guide rail so as not to interfere with the chain C itself during the vertical movement of the second gripper 24 in Z, while the first gripper 23 continues its movement in the vertical Z direction to continue inserting the tape N into the second link M2 of the chain C;

[065] - a thirteenth stage, in which, when the second clamp 24 has also passed through the current C, that is, is below the current C and under the controlled advance system 10, it is closed again so as to extract the two grippers 24a and 24b to grip the tape N in the part that has the rigid guide element G or GA once more;

[066] - a fourteenth stage, in which the insertion system block 20, after reaching the limit stop on its rail, rotates 180 degrees, so as to keep the tape N stretched and perpendicular to the chain C;

[067] - a fifteenth stage, in which the second arm 33 of the N 30 tape drive system (i.e., the arm that is on the same side as the gripping block 22 of the insertion system 20 in relation to the chain C) runs along its track towards the chain C until it engages the stretched N tape by means of a withdrawable pin P2; in this stage, when the second arm 33 begins its return, the first arm 32 also runs along its track again to approach the chain C; when the first arm 32 reaches the limit stop, the first withdrawable pin P1 is retracted and disengages the N tape, which is free to continue its path and pass stretched over the chain C; the second arm 33 then returns along its track to return to its initial position, which causes the N tape to slide through the second link M2 of the chain C until the N tape is stretched to be correctly inserted into the second link M2 (see Figure 29);In this way, the gap in the N ribbon that had been created is retracted towards the C link and forms the Nx section or arc of the N ribbon that is intertwined with the two links M1 and M2;

[068] - a sixteenth stage, in which the current C translates to bring the third link M3, adjacent to and following the second link M2, to the vertical geometric axis Z of the gripping block 20. Petition 870250087828, dated 09 / 29 / 2025, p. 19 / 147 15 / 22

[069] The complete cycle returns machine 1 to the same initial position. In particular, the only difference is that chain C has been advanced and at the end of each processing cycle by two links.

[070] In a preferred embodiment, two or four intermediate rollers RR may be provided during the N tape traction steps (the seventh step and the fifteenth step), which intervene in an active position at the height of the chain C precisely during the N tape traction steps and return to a retracted rest position during the step in which the rigid guide element G or GA, with which the N tape is provided, is passed through the chain C.

[071] In some embodiments (as shown in Figures 32 and 33), two intermediate rollers RR may be provided, which, in operation, are positioned above (or alternatively below) the insertion system 20 and which act above (or alternatively below) the plane of the controlled advance system 10.

[072] Alternatively, in other embodiments (as shown in Figures 34 and 35), four return rollers divided into two pairs RR1 and RR2 may be provided.

[073] Each RR1 and RR2 pair comprises a first roll RRa and a second roll RRb.

[074] Each RRa roller is placed above and each RRb roller is placed below the insertion system 20. In particular, the return rollers RRa and RRb of each pair RR1 and RR2 are spaced from each other so that they operate simultaneously above and below the plane of the controlled advance system 10.

[075] Figures 32 and 34 show the four intermediate rollers RR in their advanced and active position, in which they cooperate with the tape N to keep it away from the edges of the chain link M. In this position, the intermediate rollers RR are close to each other.

[076] Figures 33 and 35 show the four intermediate rollers RR in their retracted and resting positions, in which they are retracted and do not come into contact with the tape N. In this position, the intermediate rollers RR are spaced apart. Petition 870250087828, dated 09 / 29 / 2025, p. 20 / 147 16 / 22

[077] Referring to Figures 34 and 35, the four intermediate rollers RR are mounted in pairs RR1 and RR2 on vertical plates which, by means of motion systems, move the four intermediate rollers RR between their advanced and active position and their retracted and rest position.

[078] These motion systems are quite similar to the claw motion systems 23 and 24 that will be described below.

[079] These intermediate RR rollers are used to move the N tape away from the edges of the M link of the C chain to reduce friction and wear on the N tape, which needs to travel several times inside the Mi links of the C chain.

[080] Again, these intermediate RR rollers may or may not be used, depending on the type of N tape used. Furthermore, in the cycles following each change in the controlled advance direction of the gripping block 22, one of the two removable pins is retracted to allow the N tape to position itself along the chain to form the Nx section or arc of the N tape that is intertwined with the two Mi and Mi+1 links, while the other pin remains engaged.

[081] In particular, when forming an Nx section or arc of tape above current C, pin P1 is retracted while pin P2 is engaged with tape N, conversely, when forming an Nx section of tape below current C, pin P2 is retracted, while pin P1 is engaged with tape N.

[082] The rotation of the gripping block 22 is 180 degrees and is carried out by means of a pneumatic or motorized rotary actuator.

[083] These steps are repeated for all M links of chain C until chain C is completely intertwined with the N ribbon in question.

[084] At the end of the process, all the M links of chain C will have gone through the described process and chain C will be completely intertwined with ribbon N along its entire length.

[085] At the end of the chain processing, the terminal end, once the guide element G or GA is removed, is fixed or attached to the chain, for example, it can be glued, stitched or threaded back on some links to prevent it from slipping. The last processes are done manually. Petition 870250087828, dated 09 / 29 / 2025, p. 21 / 147 17 / 22

[086] The C chain has a primarily longitudinal development, with a transverse width substantially corresponding to the width of an M link, and a thickness assimilated to the thickness of an M link or a pair of links, in the overlapping areas of the two successive links.

[087] Machine 1 also has a structure, not specifically indicated, to which the various indicated components are associated.

[088] Parts of the previous steps will now be described in more detail, paying particular attention to the structure of machine 1, as made in the embodiment shown in the Figures.

[089] In particular, the controlled advance system 10 of chain C allows the movement of chain C in successive steps so that the chain is advanced by one link M at a time in the direction of advance indicated by the arrows in the drawings. In particular, during a complete processing cycle, chain C is advanced by two links. In fact, during the first part of the cycle (steps 1-7) machine 1 processes the first link M1, then in the eighth step the chain is advanced and the second part of the cycle (steps 9-15) is performed on the second link M2.

[090] Of course, everything described for the first two links can be repeated for each subsequent pair of E and E+1 links.

[091] The controlled advance system 10 provides a preferably horizontal advance surface 11 on which the chain C is placed. The chain C is moved linearly along the longitudinal geometric axis of the machine 1 by means of two arms B1 and B2 equipped with the respective hooks G1 and G2. The first end C1 of the chain C is fixed to the first hook, which, in cooperation with a carnage CAR that slides under the advance surface 11, feeds the chain C forward to position the chain link M on the vertical geometric axis Z of the gripping block 22.

[092] Alternatively, the movement of chain C is controlled by a photocell FOT, which allows the correct positioning of the chain link M on the vertical geometric axis Z of the gripping block 22. Petition 870250087828, dated 09 / 29 / 2025, page 22 / 147 18 / 22

[093] The second hook G2 is connected to the opposite end Cn of the chain C so as to keep the chain C taut and prevent its rotation during processing. The second hook G2 provides a spring to allow small movements of the chain C along the geometric axis Z of the machine 1 necessary during processing. The two hooks G1 and G2 move together with the chain C to keep the chain taut and ensure that the openings of the links M are always easily accessible and not overlapping or partially blocked by the next link sliding towards the previous one, which reduces the passage space of the passage opening.

[094] The gripping block 22, which carries the two grippers 23 and 24, translates on a vertical rail SBI by means of a slide SP. Two separately controlled actuators ATT are mounted on the slide SP. A respective gripper 23 or 24 is connected to each translation actuator ATT by means of an oscillating support ST moved by a pneumatic control member OP. A support structure SS is mounted on each translation actuator that defines the maximum grip when the grippers are open. This maximum grip with the grippers open is such that, during the passage of the gripping block 22, beyond the controlled advance system 10, the grippers do not interfere with the advance surface 11.

[095] Obviously, when clamps 23 and 24 are in the closed position, the grip is larger because they need to hold the N tape in the part where the rigid guide element G is located.

[096] The two grippers 23 and 24, during the various stages of the processing cycle, open and close by means of pneumatic actuators. In the closed condition, the grippers are normally engaged in the rigid guide element G of the belt N and have a larger grip, while in the open condition, they are retracted and have a smaller grip so as not to interfere with the chain C and the feed system 10 during the passage of the gripping block 22 from bottom to top of the chain C (or vice versa).

[097] The movement of claws 23a and 23b or 24a and 24b of the forceps is activated by Petition 870250087828, dated 09 / 29 / 2025, p. 23 / 147 19 / 22 a pneumatic piston that propels or pulls the claws to bring them to the two positions (open or closed). The claws are guided in their movements by two toothed wheels RD.

[098] Therefore, in the open condition, the grippers 23a and 23b or 24a and 24b of the grippers 23 and 24 are retracted into the support structure carried by the slide and aligned with the outer edge of the support structure, and the open gripper, during the movement of the gripping block 22 up and down the advancing surface 11 or vice versa, passes without any interference problem with the current C.

[099] N tape is chosen with a specific elastic constant to allow processing without tearing or damage.

[100] However, the N ribbon is made of a delicate material. Therefore, some arrangements have been designed to preserve the N ribbon from wear during processing for insertion into the C current.

[101] In particular, the N tape drive system 30 has two arms 33 and 34 that run on their respective tracks.

[102] Arm 33 provides a slide SB that carries a pneumatic translation actuator ATT that controls the movement of pin P1 by means of a support STA. Similarly, arm 34 provides a slide SB that carries a pneumatic translation actuator ATT that controls the movement of pin P2.

[103] Pins P1 and P2 function as fingers, gripping the N ribbon to follow it as it is inserted into link M of chain C and to keep it taut to prevent it from rolling, twisting or knotting. The following motion is similar to that used in sewing, and as soon as the needle is passed from one side of the fabric to the other with the finger inserted into the loop created by the thread, it is kept taut to prevent it from knotting.

[104] Each arm 33 and 34 has a sensor that allows measuring the tension in the N tape and stopping the slippage when the tension exceeds a certain limit. The pin slides in a guide and moves between a retracted part, in which it does not interact Petition 870250087828, dated 09 / 29 / 2025, p. 24 / 147 20 / 22 with the N tape, and an extended position, in which the N tape engages.

[105] The first pins P1 or P2 move between a first retracted position, in which they do not cooperate with the N tape, and a second position, in which they cooperate with the N tape.

[106] Pin P1 or P2 has small holes (see Figure 17a) to create an air damper to minimize friction between the N tape and the pin.

[107] Pin P1 or P2 is fitted with CUS bearings (see Figure 17b) in order to minimize friction between the N-strip and the pin. In particular, the CUS bearings can be needle bearings or ball bearings. The CUS bearings can be radial or axial and of any known type with the aim of reducing friction between the pins and the N-strip to prevent wear and deterioration of the N-strip during sliding to minimize creep and preserve the N-strip.

[108] The alternative use of drilled pins or pins fitted with needles or CUS ball bearings may be selected according to the type of N tape to be used.

[109] For example, with narrower and more delicate Ns tapes, it is better to use pins with bearings, with wider and stronger Ns tapes, it is better to use pins with perforations.

[110] Preferably, in addition to the first pins P1 and P2, there is also a second pin P3 and P4 or counterfinger that is used to force or restrict the N tape and prevent it from twisting. In particular, each second pin P3 and P4 cooperates with a respective first pin P1 and P2 and is moved by means of an AC cam that brings it closer to or further away from the respective first pin.

[111] In the case of the first pins P1 or P2 equipped with CUS bearings, the second pins P3 and P4 are also equipped with CUS bearings.

[112] Preferably, the first pins P1 and P2 and the second pins P3 and P3 do not come into contact with the N strip by virtue of the air damper or come into contact with the N strip by means of the CUS bearings to reduce friction.

[113] The second pin P3 or P4 has a locking element which, under the condition faced by the first pin P1 or P2, prevents the N tape Petition 870250087828, dated 09 / 29 / 2025, page 25 / 147 21 / 22 slip. The locking element is, for example, an arrowhead-shaped end PF with a base large enough to touch the first pin, so as to secure the N tape between the two pins and prevent it from coming loose. In this way, it is possible to prevent the N tape from twisting, allowing it to travel without the possibility of rotating on itself.

[114] The second pin is controlled by the movement of the first pin, and its translation is driven by the cam. In the first position of the cam, the two pins are far apart (see Figures 12, 14, 16), while in the second position of the cam, the two pins are close together (see Figures 13, 15 and 17a and 17b).

[115] To summarize, machine 1 simulates the classic sewing procedure, in which a rigid guide element G or needle GA is passed through the links M of a chain C by means of an insertion system 20 and the tape N is followed by virtue of a guide system 30 so that it does not knot or twist.

[116] In particular, the insertion system 20 employs two clamps 23 and 24 that simultaneously or alternatively grip a rigid element that is used as a guide element G or GA made at one end of the tape N to fillet the tape N in a wavy pattern on the chain C.

[117] After the guide element G or GA is inserted into a link M of the chain C, the insertion system 20 feeds the tape N through a small portion and the gripping block 22 is rotated 180 degrees to prepare for the insertion of the guide element G or GA into the next and adjacent link.

[118] Before this new insertion, the drive system 30 follows the N tape so that it forms the Nx section or arc of the N tape that is interlaced between the two links that have just been processed.

[119] Obviously, what has been illustrated represents only possible, non-limiting embodiments of the invention, which may vary in form and arrangement without departing from the scope of the concept underlying the invention. Any reference numbers in the accompanying claims are intended only to facilitate their reading in light of the foregoing description and the accompanying drawings, and in no way Petition 870250087828, dated 09 / 29 / 2025, p. 26 / 147 22 / 22 limits the scope of their protection.

[120] The description of specific embodiments provided above shows the invention from a conceptual point of view so that others, using prior art, can modify and / or adapt the specific embodiments in various applications without further research and without departing from the inventive concept, and thus it is understood that such adaptations and modifications will be considered equivalent to the specific embodiments.

[121] The means and materials for performing the various functions described may be of a diverse nature, without departing from the scope of the invention.

[122] It is worth noting that the terminology or expressions used are merely descriptive and therefore not limiting.

[123] Obviously, without prejudice to the principle of the invention, the constructive details and embodiments may vary widely from what has been described and illustrated above by way of example, without, however, departing from the scope of the present invention.

[124] When constructive features and techniques mentioned in any successive claims are followed by reference signs or numerals, these reference signs have been introduced for the sole purpose of increasing the intelligibility of the same claims and, consequently, these reference signs have no limiting effect on the interpretation of each element identified, by way of example only, by such reference signs. Petition 870250087828, dated 09 / 29 / 2025, page 27 / 147

Claims

1 / 5 CLAIMS 1. MACHINE (1) FOR INTERLACING A STRIP (N) WITHIN THE LINKS (M) OF A CHAIN ​​(C) IN A WAVY PATTERN, wherein said machine (1) is characterized by comprising: - a controlled advance system (10) of the chain (C) adapted to translate the chain (C) in a horizontal plane (X,Y) in predetermined steps to position the links (M) of the chain (C) in the processing zone; - a tape insertion system (20) comprising a gripping block (22) adapted to translate in a vertical direction (Z), orthogonal to the horizontal plane (X,Y) and provided with a first clamp (23) and a second clamp (24), wherein said clamps (23,24) are adapted to grip and hold a rigid guide element (G, GA) provided at a first terminal end (N1) of the tape (N) and guide or lead the same cyclically through the links (M) of the chain (C);and - a tape (N) advance system (30) comprising two arms (32,33) arranged on opposite sides with respect to the horizontal plane (X,Y) of the controlled advance system (10) on which the chain (C) is placed, adapted to translate obliquely, and wherein each arm (32,33) is provided with a finger-like end (P1, P2), adapted to engage with the tape (N) to cause it to slide and guide it so as to complete the insertion of the tape (N) into the link (M) of the chain (C) after the passage of the rigid guide element (G, GA).; 2. MACHINE (1) FOR INTERLACING A TAPE (N) INSIDE THE LINKS (M) OF A CHAIN ​​(C), according to claim 1, characterized in that said controlled advance system (10) provides an advance surface (11), preferably horizontal, on which the chain (C) is arranged and moved linearly along the longitudinal geometric axis by means of a carriage (CAR) carrying two arms (B1, B2) equipped with respective hooks (G1, G2) that allow the correct positioning of the link (M) on the vertical geometric axis (Z) of the gripping block (22).

3. MACHINE (1) FOR INTERLACING A TAPE (N) INSIDE THE LINKS (M) OF A CHAIN ​​(C), according to claim 1, characterized in that said controlled advance system (10) provides a advance surface (11), preferably horizontal, on which the chain (C) is arranged to be moved linearly along the longitudinal geometric axis wherein the movement is controlled by a photocell (FOT) that allows the correct positioning of the link (M) on the vertical geometric axis (Z) of the gripping block (22).

4. MACHINE (1) FOR INTERLACING A TAPE (N) WITHIN THE LINKS (M) OF A CHAIN ​​(C), according to any of the preceding claims, characterized in that the tape (N) insertion system (20) comprises a gripping block (22) adapted to translate in a vertical direction (Z) in a guide rail (BGI), wherein said gripping block (22) comprises a first clamp (23) and a second clamp (24) adapted to hold and fix the rigid guide element (G, GA).

5. MACHINE (1) FOR INTERLACING A STRAP (N) INSIDE THE LINKS (M) OF A CHAIN ​​(C), according to claim 4, characterized in that the first clamp (23) and the second clamp (24) comprise the respective claws (23a,23b; 24a,24b), and the movement of the clamps (23,24) is activated by a pneumatic piston (OP), which drives or pulls the claws (23a,23b; 24a,24b) to bring them to the two open or closed positions by means of the rotation of two toothed wheels (RD).

6. MACHINE (1) FOR INTERLACING A TAPE (N) WITHIN THE LINKS (M) OF A CHAIN ​​(C), according to any of the preceding claims, characterized in that the tape (N) drive system (30) comprises two arms (32, 33) arranged on opposite sides with respect to the plane of the controlled advance system (10), wherein said arms (32, 33) are each adapted to translate obliquely in a respective guide rail (BGC).

7. MACHINE (1) FOR INTERLACING TAPE (N) WITHIN THE LINKS Petition 870250087828, dated 09 / 29 / 2025, p. 29 / 147 3 / 5 (M) OF A CHAIN ​​(C), according to claim 6, characterized in that each arm (32, 33) is provided with a finger-like end (P1, P2) adapted to engage with the tape (N).

8. MACHINE (1) FOR INTERLACING A TAPE (N) INSIDE THE LINKS (M) OF A CHAIN ​​(C), according to claim 7, characterized in that said finger-like end (P1, P2) is a pull-out pin.

9. MACHINE (1) FOR INTERLACING A TAPE (N) INSIDE THE LINKS (M) OF A CHAIN ​​(C), according to claim 8, characterized in that said finger-like end (P1, P2) is provided with small holes to create an air damper to minimize friction between the tape (N) and the finger-like end (P1, P2).

10. MACHINE (1) FOR INTERLACING A RIBBON (N) INSIDE THE LINKS (M) OF A CHAIN ​​(C), according to claim 9, characterized in that, in addition to said finger-like end (P1, P2), there is also a counter-finger (P3, P4) that is used to restrain the ribbon (N) and prevent it from twisting.

11. MACHINE (1) FOR INTERLACING A STRAP (N) WITHIN THE LINKS (M) OF A CHAIN ​​(C), according to claim 8, characterized in that said finger-like end (P1, P2) is provided with needle bearings or ball bearings, wherein, in addition to said finger-like end (P1, P2), there is also a counter-finger (P3, P4) provided with needle bearings or ball bearings, which is used to restrain the strap (N) and prevent it from twisting.

12. MACHINE (1) FOR INTERLACING A TAPE (N) WITHIN THE LINKS (M) OF A CHAIN ​​(C), according to any of the preceding claims, characterized in that the tape (N) feed system (30) has intermediate rollers (RR) that intervene in an active position at the height of the chain (C) precisely during the step in which the tape (N) is pulled and return to a retracted rest position during the step in which the rigid guide element (G, GA) is passed through the chain (C). Petition 870250087828, dated 29 / 09 / 2025, p. 30 / 147 4 / 5 13. MACHINE (1) FOR INTERLACING A STRAP (N) INSIDE THE LINKS (M) OF A CHAIN ​​(C), according to claim 12, characterized in that said intermediate rollers (RR) are provided with bearings (CUS) to reduce friction.

14. METHOD FOR INTERLACING A RIBBON (N) WITHIN THE LINKS (M) OF A CHAIN ​​(C) IN A WAVY PATTERN, said method being characterized by comprising the following steps: a) preparing the ribbon (N) with a rigid guide element (G, GA) at a first end (N1), b) configuring a controlled advance system (10) of the chain (C), c) configuring an insertion system (20) of the ribbon (N), d) configuring a double interlining system (30) of the ribbon (N), e) positioning, by means of said controlled advance system (10), the chain (C) so that the link (Mi) to be processed is on the vertical geometric axis (Z) of the insertion system (20), f) gripping, with the insertion system (20), the rigid guide element (G, GA) in a portion of the space that is below, or respectively above, the controlled advance system (10) of the chain (C), g) completing the insertion of the rigid guide element (G, GA) into the link (Mi) and guiding the tape (N) through the link (Mi) that is processed;h) operate the insertion system (20) to move along a guide rail (BGI) in a direction adapted to insert the tape (N) into the link (Mi) being processed, so as to move in the vertical direction from bottom to top, or from top to bottom, respectively, through the link (Mi) being processed; i) continue the movement of the insertion system (20) until the limit stop of the guide rail (BGI); j) reverse the insertion system (20) by 180 degrees, so as to keep the tape (N) stretched and perpendicular to the chain (C);k) operate the drive system (30) of the tape (N) which is on the same side as the insertion system (20) in relation to the chain (C) to travel along a guide rail (BGC) in the direction of approach of the tape (N), l) grasp the tape (N) with the drive system (30) to keep it taut, m) operate the drive system (30) to move again along the guide rail (BGC) to return to the initial position so as to bring the tape (N) back, so as to make the tape (N) slide further through the link (Mi) that is being processed, provided that said tape (N) provides sufficient tension to prevent slippage of the drive system (30), en) repeat steps (e) to (m) for all links (Mi+1) of the chain (C). Petition 870250087828, dated 09 / 29 / 2025, p. 32 / 147;

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