A machine that manufactures chains woven from ribbons.

Abstract

A machine (1) for weaving ribbons (N) into a wavy pattern on the links (M) of a chain (C) is configured to position the links (M) of the chain (C) in a processing area by a controlled feed mechanism (10) that moves the chain (C) in predetermined steps on a horizontal plane (X, Y). A ribbon (N) insertion mechanism (20) is movable in a direction perpendicular (Z) or orthogonal to the horizontal plane (X, Y) and comprises a clamp block (22) having a first gripper (23) and a second gripper (24). These grippers (23, 24) are configured to grip and fix a rigid guide member (G, GA) attached to one end (N1) of the ribbon (N) and to periodically guide or lead the rigid guide member through the links (M) of the chain (C). The ribbon (N) guiding mechanism (30) is positioned on the opposite side of the horizontal plane (X, Y) of the control feeding mechanism (10) where the chain (C) is located, and comprises two obliquely movable arms (32, 33). Each arm (32, 33) is provided with finger-shaped ends (P1, P2), which engage with the ribbon (N) to slide it, guiding the ribbon (N) so that its insertion into the links (M) of the chain (C) is completed after the rigid guide members (G, GA) have passed.

Description

Technical Field

[0001] The present invention relates to the field of fashion accessories, particularly to chains or small chains (chainlets) in which a ribbon is woven between links (rings).

[0002] More specifically, the present invention relates to a machine and method for weaving a ribbon or webbing in a wavy pattern into the links or loops of a chain. Background of the Invention

[0003] In the prior art, decorative chains with a ribbon woven in (see FIG. 1) are well-known and are used for decoration of fashion accessories such as handbags, shoes, and clothing.

[0004] In particular, handbags with handles or shoulder belts made of chains with a ribbon (such as leather, synthetic leather, fabric, etc.) woven in are well-known.

[0005] Currently, the operation of weaving this ribbon into the chain is mainly carried out manually by skilled craftsmen.

[0006] Of course, this operation requires a great deal of time and advanced technology to ensure a perfect finish and no damaged parts.

[0007] European Patent Application EP2995707A1 describes an apparatus for passing a webbing in a wavy pattern through the links of a chain. However, this solution has several drawbacks as described below.

[0008] In this proposed solution, the chain is fed by being tightened in stages by a gripper, either with the flexible material or the webbing already inserted. In this method, initial stress is applied to the flexible material, which can cause deterioration or damage. Furthermore, since this flexible material is inserted into the chain links by punching, this inevitably applies secondary stress to the flexible material. In particular, it is necessary to consider that the size of the hole in each chain link is very small compared to the thickness of the inserted material, given that the insertion method doubles the thickness of the material. Next, in the process where the webbing is pulled until one end passes through the loop, the configuration designed for this function, which is solely dedicated to pulling the webbing, cannot provide the webbing with the appropriate tension. This affects the final result, making it difficult to obtain a high-quality product. Finally, since one end of the inserted webbing is a free end, its positioning cannot be controlled, and in particular, it is not possible to verify that the webbing is correctly positioned for the hole through which it should pass in each successive insertion process. Therefore, the webbing may be misaligned with the punch, potentially preventing the punch from gripping correctly, damaging the webbing if it is gripped incorrectly, or causing it to be inserted in a rotated position.

[0009] As a result, currently, no research is being conducted on technologies that can solve the accuracy and quality problems mentioned above while achieving the necessary production speed. [Overview of the Initiative]

[0010] The present invention aims to automate the process of inserting ribbons into a chain. Furthermore, it aims to improve the speed of the process of manufacturing chains with woven ribbons or webbing.

[0011] Furthermore, the present invention aims to provide a machine capable of manufacturing chains with woven ribbons in a high-quality and precise manner.

[0012] Of course, another objective of the present invention is to reduce the workload of skilled craftsmen and to provide a machine for inserting ribbons into chains.

[0013] As will be revealed below, these and other objectives are achieved by a machine that threads ribbon or webbing in a wave-like manner through the links or loops of a chain, as described in claim 1.

[0014] Furthermore, the present invention also relates to a method for weaving ribbon in a wavy pattern onto the links of a chain.

[0015] The present invention relates to a machine for weaving ribbon in a wave-like pattern between links of a chain, the machine comprising the following: The controlled chain feeding mechanism moves the chain horizontally at regular intervals, positioning the chain links within the processing zone. The ribbon insertion mechanism includes a clamp block that moves in a direction perpendicular or orthogonal to the horizontal plane, and the clamp block is provided with a first gripper and a second gripper. These grippers are configured to grip and fix a rigid guide member attached to one end of the ribbon, and to guide it through the chain links repeatedly. The ribbon guiding mechanism includes two arms positioned opposite the horizontal plane of the control feeding mechanism on which the chain is arranged, and these arms are obliquely movable, with finger-like ends at the tips of each arm to guide the ribbon through and complete the insertion of the ribbon into the chain links after passing over the rigid guide member.

[0016] In some embodiments, the control feed mechanism includes a feed surface (preferably a horizontal surface) on which the chain is arranged and which is moved linearly in the longitudinal direction by a carriage, the carriage being provided with two arms, each equipped with a hook, which precisely position the link on the vertical axis of the clamp block.

[0017] Alternatively, the movement of the chain can be controlled by a photoelectric sensor, which allows the chain links to be precisely positioned on the vertical axis of the clamp block.

[0018] The ribbon insertion mechanism includes a clamp block that is movable vertically along the guide rail. This clamp block has a first gripper and a second gripper for gripping and securing the rigid guide member.

[0019] The first and second grippers each have claws, and the movement of these grippers is controlled by a pneumatic piston. The piston rotates two gears, pushing and pulling the claws to move them to the open or closed position.

[0020] The ribbon guide mechanism comprises two arms positioned opposite the plane of the control feed mechanism, each arm designed to move diagonally along its corresponding guide rail.

[0021] Each arm is provided with a finger-like end for gripping the ribbon. In a preferred embodiment, this finger-like end is a detachable pin with a small hole to form an air layer that minimizes friction between the ribbon and the finger-like end. Alternatively, the finger-like end is a detachable pin equipped with a needle or ball bearing.

[0022] Preferably, counter fingers are also provided to secure the ribbon and prevent twisting.

[0023] The present invention further relates to a method for weaving a ribbon in a wavy pattern onto the links of a chain, and includes the following steps: a) Prepare a ribbon with a rigid guide member attached to one end. b) Set up the chain control feed mechanism. c) Set up the ribbon insertion mechanism. d) Set up two ribbon guide mechanisms. e) Using a control feed mechanism, arrange the chain so that the link to be processed is positioned on the vertical axis of the insertion mechanism. f) Using the insertion mechanism, grip the rigid guide member in a part of the space below or above the control feed mechanism of the chain. g) Complete the insertion of the rigid guide member into the link and guide the ribbon to the link to be processed. h) Operate the insertion mechanism and move it along the guide rail in the direction of inserting the ribbon into the link to be processed, that is, move it vertically through the link to be processed, repeatedly from bottom to top or from top to bottom. i) Move the insertion mechanism to the end position of the guide rail. j) Rotate the insertion mechanism by 180 degrees, maintaining the state where the ribbon is stretched and keeping it perpendicular to the chain. k) Operate the ribbon guide mechanism arranged on the same side as the insertion mechanism with respect to the chain and move it along the guide rail in the direction approaching the ribbon. l) Grip the ribbon with the guide mechanism and maintain the state where the ribbon is stretched. m) Operate the guide mechanism and move it back to the original position along the guide rail again so that the ribbon is positioned behind. As long as sufficient tension is maintained when the ribbon passes through the link being processed, the guide mechanism does not slide. n) Repeat the processes from step e) to m) for all the links of the chain.

[0024] Other features and advantages of the present invention will be described below, and the prominent features are presented in the claims described later.

Brief Description of the Drawings

[0025] Other features and advantages of the present invention will be more clearly understood from the description of the preferred embodiments exemplarily shown in the accompanying drawings. However, the following drawings are an example of the embodiments of the present invention and do not limit the present invention. FIG. 1 shows an example of a chain in which leather cords are woven between each link of the chain. FIG. 2 shows an example of a leather cord. Figures 3a and 3b show examples of leather straps prepared for processing by the machine according to the present invention. Figure 4 shows an example of a chain 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 illustrating the details of the base portion of the machine according to the present invention. Figures 8-11 show the details of the insertion mechanism. Figures 12-17 show the details of the guidance mechanism. Figures 18-35 show some processing steps of the method according to the present invention.

[0026] Each configuration described herein is shown in the drawings using general symbols as necessary. However, only details that are particularly important for understanding embodiments of the present invention are shown, and details that would be easily understood by those skilled in the art by referring to the description herein are deliberately omitted. Detailed Description of the Invention

[0027] The present invention relates to the field of fashion accessories, such as belts, sandals, shoes, handbags, or wallets, and to products having handles or shoulder straps having chain members woven from ribbons or webbing made of ribbons, woven fabrics, leather, or synthetic materials such as eco-leather. The ribbons are woven into the links of the chain.

[0028] Of course, such ribbon-woven chain components can be used for both clothing and decoration, for example, on the collars of sweaters, tops, jackets, parkas, and coats. More specifically, the present invention relates to a machine for weaving ribbons or webbing in a wavy pattern onto the links or loops of a chain.

[0029] Figure 1 shows a portion of chain C with leather ribbons N woven between each link.

[0030] Referring to the diagram, the machine for inserting ribbon or webbing in a wavy pattern between the links or loops of a chain is shown collectively as reference numeral 1.

[0031] The operation of machine 1, which inserts ribbon N or webbing into chain C, will be explained using diagrams.

[0032] The entire chain to be processed is represented by the letter C, and each link in chain C is represented by the letter M.

[0033] Chain C has a structure in which closed or detachable annular sections A are continuously linked, and each annular section A is able to move relative to one another. Each annular section A constitutes a link M of chain C.

[0034] Chain C has a length LC and a width LLC, and generally extends in the longitudinal direction. These dimensions vary depending on the application of the final product. The thickness SC of chain C is negligible compared to its length LC.

[0035] The width LLC of chain C is determined by the individual outer diameter of each annular section A or link M, and the overall diameter of chain C. Each link M has a through hole with a diameter DC.

[0036] Ribbons or webbing are made from any flexible, non-rigid material, such as leather, genuine leather, synthetic leather, eco-leather, fabric, non-woven fabric, cord, or synthetic material, and are represented collectively by the letter N.

[0037] Ribbon N is an element that extends generally in the longitudinal direction, having two free ends N1 and N2, and having length LN, width LLN, and thickness SN (negligible compared to length LN).

[0038] Before starting the processing steps, ribbon N is prepared for use in machine 1.

[0039] In particular, in the first embodiment, a rigid member covered with a metal layer (for example, a substantially flat strip-shaped member made of brass foil) is formed on one free end N1 of the ribbon N, and is used as a guide member G for inserting the ribbon N into the link M of the chain C. In particular, the guide member G has a substantially flat shape to facilitate interference with the gripping part of the machine and to keep the ribbon in the correct orientation (if it were cylindrical, it would be difficult to position it to prevent twisting of the ribbon).

[0040] Specifically, the rigid guide member G is configured to cover one free end N1 of the webbing N by an appropriate length, thereby allowing the rigid guide member G to work in cooperation with a mechanical element (such as a gripper) to insert the webbing N into the chain C. In particular, the maximum width dimension of the rigid guide member G must be designed to allow the webbing N to smoothly insert and move within each link M of the chain. Therefore, this width dimension is slightly smaller than the inner diameter DC of each link M for smooth insertion and movement.

[0041] Thus, the rigid guide member G for inserting the webbing N into the chain C functions as a needle that smoothly inserts the ribbon N into the chain C.

[0042] During processing, the rigid guide member G guides the insertion operation of the ribbon N into the chain C.

[0043] In another embodiment, the guide element is an actual needle GA with a hole GAC for passing the ribbon N. The needle GA, which serves as a rigid guide member G for inserting the ribbon N into the chain C, is designed to be generally flattened in shape to facilitate interference with the machine's gripping part and to keep the ribbon in the correct orientation (if it were cylindrical, positioning to prevent twisting of the ribbon would be difficult). In particular, one free end N1 of the ribbon N is passed through the hole GAC and secured, for example, by folding and fixing with double-sided ribbon or adhesive, or by securing with adhesive ribbon or fasteners.

[0044] In particular, the width LLN of ribbon N is set so that ribbon N fills the links M of chain C and remains taut.

[0045] Specifically, the width LLN of the ribbon N is designed to fit within the links M of the chain C, and is set to be approximately the same as, or slightly larger than, the width of each through-hole (diameter DC) of the chain C. This allows the ribbon N to be inserted into the links M of the chain C. In other words, the width LLN of the ribbon N is approximately the same as, or slightly larger than, the inner diameter DC of the link M.

[0046] Furthermore, during the preparation of the ribbon N, the end of the ribbon N indicated by reference numeral N2, which is opposite to the rigid guide member G or GA, is secured by a knot or some other means (fastener F) so that it does not pass through the link M. This forms a terminal end that prevents the ribbon N from coming off or passing through the chain C.

[0047] In another embodiment, the terminal N2 is fixed to the chain in advance to prevent it from detaching during subsequent processing steps.

[0048] The machine 1, which inserts the ribbon N into the link M of chain C, is schematically illustrated by the following three main components. The control feeding mechanism 10 for chain C moves chain C horizontally at predetermined intervals and positions the links M of chain C within the processing area. The ribbon insertion mechanism 20 includes a clamp block 22 that is movable in the vertical direction Z, and the clamp block 22 is provided with a first gripper 23 and a second gripper 24. These grippers 23 and 24 grip and fix a rigid guide member G or GA attached to one end N1 of the ribbon N, and periodically guide or lead the ribbon N through the link M of the chain C. The ribbon N guiding mechanism 30 comprises two arms 32, 33 positioned on the opposite side of the control feed mechanism 10 on which the chain C is mounted, and these arms are obliquely movable. Each arm has a finger-like end that engages with and slides the ribbon N, guiding the ribbon N so that, after passing the rigid guide member G or GA, the insertion of the ribbon N into the link M of the chain C is completed.

[0049] The method of weaving ribbon N into link M of chain C in a wave-like pattern includes the following steps. a) Prepare a ribbon N with a rigid guide member G or GA attached. b) Set the control feed mechanism 10 for chain C. c) Set up the ribbon insertion mechanism 20 for the ribbon N. d) Set the guide mechanism 30 for the ribbon N. e) Using the control feed mechanism 10, the chain C is positioned so that the link Mi to be processed is located at the position of the vertical axis Z of the insertion mechanism 20. f) The insertion mechanism 20 grips the rigid guide member G or GA in a portion of the space below or above the control feeding mechanism 10 of the chain C. g) Complete the insertion of the rigid guide member G or GA into link Mi and guide it through the ribbon N to the link Mi to be processed. h) The insertion mechanism 20 is activated and moved along the guide rail BGI in a direction that inserts the ribbon N into the link Mi to be processed, that is, it is moved from bottom to top or from top to bottom through the link Mi to be processed. i) Continue the movement of the insertion mechanism 20 until it reaches the end of the guide rail BGI. j) Rotate the insertion mechanism 20 by 180 degrees, maintaining the tension on the ribbon N and keeping it perpendicular to the chain C. k) The guide mechanism 30 for the ribbon N, which is located on the same side as the insertion mechanism 20 with respect to the chain C, is activated and moved along the guide rail BGC in the direction toward the ribbon N. l) The guide mechanism 30 grips the ribbon N and maintains the ribbon N in a taut state. m) The guide mechanism 30 is operated again along the guide rail BGC to return it to its initial position, so that the ribbon is positioned at the rear. The guide mechanism (30) will not slide as long as sufficient tension is maintained as the ribbon (N) passes through the link (Mi) being processed. n) Repeat the processes from e) to m) above for all links Mi+1 on chain C.

[0050] The operation procedure of machine 1 in a preferred embodiment will now be described in detail, with reference to Figures 18-35.

[0051] To avoid making the diagrams cluttered, some of the figures do not have reference numbers.

[0052] In particular, the series of processing cycles consists of the following steps. The first step is performed by the insertion mechanism 20 when the chain C is stopped at the processing position. In this first step, the chain C is positioned so that the first link M1 is placed in the insertion area, and the two grippers 23 and 24 of the clamp block 22 engage with the rigid guide member G or GA at the first end N1 of the ribbon N. In other words, the grippers 23 and 24 grip the rigid guide member G or GA in part of the space below the feed control mechanism 10 of the chain C, and guide the ribbon by moving it vertically from bottom to top (as shown in the figure), passing the ribbon N through the first link M1 of the chain C, which is located on the vertical axis of the clamp block 22. As previously mentioned, the ribbon N may be provided with a fastener F or stopper that secures the second end N2 and prevents the ribbon N from coming off the first link M1 of the chain C. Depending on the processing requirements, the ribbon N may be in a free state and held by a fixed member provided on the machine, or it may already be fixed to the chain (for example, sewn to the first link M1). The second step begins when the first end N1 of the ribbon N is inserted into the first link M1 of the chain C by the rigid guide member G or GA, and the first gripper 23 closest to the chain C releases its grip on the rigid guide member G or GA (see Figure 18). At this time, the two claws 23a and 23b of the first gripper 23 open and retract toward the guide rail so as the first gripper 23 moves up and down along the Z axis, without interfering with the chain C. Meanwhile, the second gripper 24 remains closed and continues to move vertically from bottom to top, completing the insertion of the rigid guide member G or GA into the first link M1 of the chain C. In the third step, the first gripper 23 passes over the chain C, that is, the first gripper 23 is positioned above the control feed mechanism 10 and the chain C, causing the first gripper 23 to close again (see Figure 19), extending the two claw portions 23a and 23b to re-hold the rigid guide member G or GA located at the first end N1 of the ribbon N. In the fourth step, the second gripper 24 releases its grip on the rigid guide member G or GA (see Figure 20). Subsequently, the two claws 24a and 24b are released and retracted toward the guide rail so as the second gripper 24 moves in the Z direction (vertical direction) to avoid interfering with the chain C. Meanwhile, the first gripper 23 continues to move vertically in the Z direction from bottom to top, continuing its movement to insert the ribbon N into the first link M1 of the chain C. In the fifth step, when the second gripper 24 passes through chain C, it closes again (see Figure 21), extending the two claws 24a and 24b to re-retain the ribbon N near the rigid guide member G or GA. In the sixth step, when the block of the insertion mechanism 20 reaches its end position on the rail, it rotates 180 degrees (see Figures 22 and 23) to keep the ribbon N taut and perpendicular to the chain C. Step 7 begins with the first arm 32 of the ribbon N guide mechanism 30 (the arm located on the same side as the clamp block 22 of the insertion mechanism 20 relative to the chain C) moving along the rail toward the chain C until it engages with the ribbon N by a retractable pin P1, like a finger holding the taut ribbon N. The first arm 32 then moves again along the rail, holding the ribbon N backward, returning to its original position and moving the ribbon N through the first link M1 of the chain C until the opposite end N2 (and fastener F) of the ribbon N reaches the end position. In subsequent cycles, the end element is composed of the ribbon N itself, and the taut ribbon N generates enough tension to stop the arm 32 from sliding. In the eighth step, the chain C is moved so that the second link M2, which is adjacent to the first link M1, moves toward the vertical axis Z of the clamp block 20. In the ninth step, the chain C is stopped at a predetermined processing position and the second link M2 is positioned in the insertion area, and the insertion is performed by the insertion mechanism 20. At this time, the two grippers 23 and 24 of the clamp block 22 guide the rigid guide member G or GA in a vertical direction from top to bottom (as shown in Figure 26), passing the second link M2 of the chain C, which is on the vertical axis of the clamp block 22. 9th Step teeth The process begins when the first end N1 of the ribbon N is inserted into the second link M2 of the chain C by the rigid guide member G or GA, and the first gripper 23 closest to the chain C releases its grip on the rigid guide member G or GA (see Figure 27). Subsequently, the two claws 23a and 23b open and retract toward the guide rail to prevent interference with the chain C body as the first gripper 23 moves vertically along the Z axis. Meanwhile, the second gripper 24 remains closed and continues to move vertically, completing the insertion of the rigid guide member G or GA into the second link M2 of the chain C. In the 11th step, when the first gripper 23 has passed the chain C, i.e., when the first gripper 23 is positioned below the chain C and the control feed mechanism 10, the gripper 23 closes again, extending the two claws 23a and 23b to re-retain the rigid guide member G or GA positioned at the first end N1 of the ribbon N. In the twelfth step, the second gripper 24 releases its grip on the rigid guide member G or GA (see Figure 28). The two claws 24a and 24b open and retract toward the guide rail, preventing interference with the chain C as the second gripper 24 moves in the Z direction (vertical direction). Meanwhile, the first gripper 23 continues to move in the Z direction (vertical direction), continuing to insert the ribbon N into the second link M2 of the chain C. In the 13th step, once the second gripper 24 has also passed through the chain C, that is, is below the chain C and the control feed mechanism 10, the gripper 24 closes again, extending its two claws 24a and 24b, and grips the portion of the ribbon N where the rigid guide member G or GA is located. In step 14, when the block of the insertion mechanism 20 reaches its end position on the rail, it rotates 180 degrees so that it is perpendicular to the chain C with the ribbon N taut. In step 15, the second arm 33 of the ribbon guide mechanism 30 (the arm located on the same side as the clamp block 22 of the insertion mechanism 20) moves along the rail toward chain C until it grasps the stretched ribbon N using the movable pin P2. As the second arm 33 begins to return to its original position, the first arm 32 also moves along the rail toward chain C. When the first arm 32 reaches its stopping position, the movable pin P1 retracts, releasing the ribbon N, which then moves along chain C while taut. The second arm 33 then returns to its original position along the rail, moving so that the ribbon N passes the second link M2 of chain C so that the ribbon N is properly inserted into the second link M2 while taut (see Figure 29). In this way, the slot formed in the ribbon N is pulled toward chain C, and the tension or arc-shaped portion Nx of the ribbon N is formed between the first link M1 and the second link M2. In step 16, the chain C is moved so that the third link M3, which is adjacent to the second link M2, is positioned on the vertical axis Z of the clamp block 20.

[0053] Once the series of operations is complete, machine 1 returns to its original initial position. The only difference is that chain C moves forward by two links at the end of each processing cycle.

[0054] In a preferred embodiment, two or four idler rollers RR are provided during the process of pulling the ribbon N (steps 7 and 15). These rollers are positioned in an operational position at the height of the chain C during the process of pulling the ribbon N, and return to a retracted position while the ribbon N is pulled back to the retracted position during the step in which the rigid guide members G or GA (provided on the ribbon N) are passed through the chain C.

[0055] In some embodiments (see Figures 32 and 33), two idler rollers RR are provided, which are positioned above (or below) the insertion mechanism 20 during operation and act above (or below) the operating surface of the control feed mechanism 10.

[0056] Alternatively, in other embodiments (see Figures 34 and 35), four return rollers can be provided, which are divided into two sets of RR1 and RR2.

[0057] Each pair (RR1 and RR2) consists of a first roller RRa and a second roller RRb.

[0058] The first roller RRa is positioned at the top of the insertion mechanism 20, and the second roller RRb is positioned at the bottom of the insertion mechanism 20. In particular, the return rollers RRa and RRb of each pair (RR1 and RR2) are spaced apart from each other so that they act simultaneously on the upper and lower parts of the operating surface of the control feed mechanism 10.

[0059] Figures 32 and 34 show the four idler rollers RR in their advanced operating position. In this position, the idler rollers RR work in cooperation with the ribbon N to separate the ribbon N from the end of the link M of the chain C. In this position, the idler rollers RR are close to each other.

[0060] Figures 33 and 35 show the four idler rollers RR in a retracted, non-operating position. In this position, the idler rollers RR are retracted and do not contact the ribbon N. In this position, the idler rollers RR are separated from each other.

[0061] As shown in Figures 34 and 35, the four idler rollers RR are arranged in pairs RR1 and RR2 on a vertically mounted plate. This plate is operated by a drive mechanism, which moves the four idler rollers RR between a forward operating position and a retracted non-operating position.

[0062] These drive mechanisms have a structure very similar to the claw drive mechanisms 23 and 24 described later.

[0063] These idler rollers RR are used to move the ribbon N away from the end of the link M of the chain C in order to reduce friction and wear of the ribbon N, because the ribbon N passes between the links Mi of the chain C many times.

[0064] Furthermore, depending on the type of ribbon N used, these idler rollers RR may not be used. Moreover, in each cycle each time the controlled forward direction of the clamp block 22 is switched, one of the two movable pins is retracted, and the ribbon N is repositioned along the chain, so that tension or an arc-shaped portion Nx of the ribbon N woven between the two links Mi and Mi+1 is formed. The other pin, on the other hand, remains held in place.

[0065] In particular, when forming tension or an arc-shaped portion Nx of the ribbon N on the upper side of chain C, pin P1 retracts and pin P2 engages with the ribbon N. Conversely, when forming an arc-shaped portion Nx of the ribbon N on the lower side of chain C, pin P2 retracts and pin P1 engages with the ribbon N.

[0066] The rotation angle of the clamp block 22 is 180 degrees, which is controlled by a pneumatic or electric rotary actuator.

[0067] These steps are repeated for all links M of chain C until chain C is fully intertwined with the target ribbon N.

[0068] At the end of this process, all links M of chain C have undergone the aforementioned treatment, and the ribbon N is completely woven into the entire chain C.

[0069] In the final stage of the chain's construction, after the guide members G or GA are removed, the ends of the ribbon N are secured or fastened to the chain. For example, they may be glued, sewn, or some links may be threaded in the reverse direction to prevent them from coming loose. All subsequent steps are performed manually.

[0070] Chain C extends mainly in the vertical direction, and its width is approximately the same as the width of link M. Furthermore, the thickness of the overlapping section of two consecutive links is the same as the thickness of one link M, or two links combined.

[0071] Machine 1, although not shown in the diagram, has a frame, and various components are attached to this frame.

[0072] In the following sections, the above procedure will be explained in more detail, with particular attention paid to the structure of machine 1 in the embodiment shown in the figure.

[0073] In particular, the control feeding mechanism 10 for chain C sequentially feeds the chain one link at a time in the direction indicated by the arrows in the figure by moving chain C in stages. Specifically, chain C is fed out two links at a time throughout one processing cycle. That is, in the first half of the processing cycle (steps 1-7), machine 1 processes the first link M1, the chain is fed out in the eighth step, and in the second half of the cycle (steps 9-15), the second link M2 is processed.

[0074] Of course, the explanation for the first two links can be applied equally to all subsequent link pairs (such as E and E+1).

[0075] The control feeding mechanism 10 preferably has a horizontal conveying surface 11, on which the chain C is positioned. The chain C is moved linearly along the longitudinal axis of the machine 1 by two arms B1 and B2, each equipped with hooks G1 and G2. One end C1 of the chain C is fixed to a first hook, which works in cooperation with a carriage CAR that slides below the conveying surface 11 to advance the chain C and position the chain link M on the vertical axis Z of the clamp block 22.

[0076] Alternatively, the movement of chain C is controlled by a photoelectric sensor FOR, which allows the chain link M to be positioned appropriately on the vertical axis Z of the clamp block 22.

[0077] The second hook G2 is connected to the opposite end Cn of chain C, maintaining tension on chain C during processing and preventing rotation. The second hook G2 is also fitted with a spring to enable the small movement of chain C in the Z-axis direction of machine 1 required during processing. The two hooks G1 and G2 move in conjunction with chain C, keeping the chain taut and ensuring that the through-holes in link M are always fully accessible, preventing the next link from slipping over or partially blocking the previous link, thus preventing narrowing of the passage space through the through-holes.

[0078] A clamp block 22, which holds two grippers 23 and 24, moves along a vertical rail SBI via a sliding section SP. Two actuators ATT, each independently controllable, are attached to the sliding section SP. Each actuator ATT is connected to the corresponding gripper 23 or 24 via a swing bracket ST, which is operated by a pneumatic control mechanism OP. Each actuator ATT is fitted with a support structure SS that defines the maximum external dimensions when the gripper is open. These maximum external dimensions in the gripper-open state are set so that the grippers do not interfere with the transport surface 11 when the clamp block 22 moves with the control feed mechanism 10.

[0079] Of course, when grippers 23 and 24 are in the closed position, the rigid guide member G needs to grip the ribbon N at the point where it is located, so the external dimensions will be larger.

[0080] In each step of the processing cycle, the two grippers 23 and 24 are opened and closed by pneumatic actuators. In the closed state, these grippers normally grip the rigid guide member G of the ribbon N, and their external dimensions are large. On the other hand, in the open state, these grippers retract, reducing their external dimensions and avoiding interference between the chain C and the feeding mechanism 10 as the clamp block 22 passes from the bottom to the top of the chain C (or vice versa).

[0081] The movement of the clamp's jaws (23a, 23b or 24a, 24b) is actuated by a pneumatic piston. This piston pushes or retracts the jaws, moving them between two positions (open or closed). The movement of the jaws is guided by two gears RD.

[0082] Therefore, in the open state, the claw portions 23a, 23b or 24a, 24b of the grippers 23 and 24 are housed within the support structure held by the sliding portion and are positioned almost in a straight line with the outer edge of the support structure. As a result, the open grippers can pass through the chain C without any interference when the clamp block 22 moves from top to bottom or vice versa on the conveying surface 11.

[0083] Ribbon N is selected from a material with a certain modulus of elasticity so that it can be processed without tearing or damaging.

[0084] However, because ribbon N is made of delicate material, several measures have been taken to prevent it from wearing down when inserted into chain C.

[0085] In particular, the guide mechanism 30 of the ribbon N is provided with two arms 33 and 34 that move on their respective dedicated rails.

[0086] Arm 33 is provided with a sliding section SB, to which a pneumatic actuator ATT is attached via a bracket STA to control the movement of pin P1. Similarly, arm 34 is also provided with a sliding section SB, to which a pneumatic actuator ATT is attached to control the movement of pin P2.

[0087] Pins P1 and P2 act like "fingers," gripping ribbon N and inserting it into link M of chain C, moving the ribbon together and maintaining tension to prevent slack, twisting, or knotting. This action is similar to the movement of a needle in sewing, just as fingers maintain tension to prevent the thread from tangling as the needle penetrates the fabric from one side to the other, forming a loop.

[0088] Each arm 33 and 34 has a built-in sensor that measures the tension of the ribbon N and stops sliding if a tension exceeding a set threshold is detected. The pin moves along the guide, moving between a non-operating position where it does not interfere with the ribbon N and an operating position where it grips the ribbon N.

[0089] The first pin P1 or P2 moves between a first retracted position in which it does not interfere with the ribbon N and a second position in which it cooperates with the ribbon N.

[0090] Pins P1 or P2 are provided with small holes (see Figure 17a) that form an air layer to minimize friction between the ribbon N and the pin.

[0091] A bearing CUS (see Figure 17b) is fitted to pin P1 or P2 to minimize friction between the ribbon N and the pin. The bearing CUS is particularly a needle bearing or a ball bearing. These bearing CUSs can be applied radially or axially to reduce friction between the pin and the ribbon N, and their purpose is to reduce friction between the pin and the ribbon N. This prevents wear and deterioration of the ribbon N during sliding and protects the ribbon N by minimizing creep.

[0092] Depending on the type of ribbon N used, a perforated pin, a needle bearing, or a pin with a ball bearing CUS can be selectively used.

[0093] For example, for narrow and delicate ribbons N, it is appropriate to use pins with bearings, while for wide and sturdy ribbons N, it is appropriate to use pins with holes.

[0094] Preferably, in addition to the first pins P1 and P2, there are second pins P3 and P4 or counter fingers used to hold down or restrain the ribbon N and prevent twisting. In particular, the second pins P3 and P4 work in cooperation with the corresponding first pins P1 and P2, respectively, and are driven by a cam AC to move away from or towards the first pins.

[0095] If the first pin P1 or P2 is fitted with a bearing CUS, then the second pins P3 and P4 are also fitted with bearing CUSs in the same manner.

[0096] Preferably, the first pins P1 and P2, and the second pins P3 and P4 are designed to either not contact the ribbon N due to an air layer to reduce friction, or to contact the ribbon N using bearings CUS to reduce friction.

[0097] The second pin P3 or P4 is provided with a locking mechanism that prevents the ribbon N from coming off when it is facing the first pin P1 or P2. This locking mechanism is, for example, an arrowhead-shaped end PF, sized so that its base contacts the first pin, and the ribbon N is sandwiched between the two pins, preventing it from coming off. In this way, the ribbon N runs without twisting on its own, thus preventing the ribbon N from twisting.

[0098] The second pin is controlled by the movement of the first pin, and its movement is performed by a cam mechanism. When the cam mechanism is in the first position, the two pins are separated from each other (see Figures 12, 14, and 16). On the other hand, when the cam mechanism is in the second position, the two pins are brought closer together (see Figures 13, 15, 17a, and 17b). In short, machine 1 mimics a conventional sewing process, where the insertion mechanism 20 allows a rigid guide member G or needle GA to pass through the links M of the chain C, and the guiding mechanism 30 guides the ribbon N appropriately, preventing the ribbon from becoming tangled or twisted.

[0099] In particular, the insertion mechanism 20 is used to simultaneously or alternately grip a rigid member, which is used as a guide member G or GA (for inserting the ribbon N into the chain C in a wavy pattern) provided at one end of the ribbon N, with two grippers 23 and 24.

[0100] After the guide member G or GA is inserted into the link M of the chain C, the insertion mechanism 20 gradually feeds out the ribbon N, and the clamp block 22 is rotated 180 degrees to prepare for the insertion of the guide member G or GA into the next adjacent link.

[0101] Prior to this new insertion, the guide mechanism 30 follows the ribbon N so that tension or an arc-shaped portion Nx of the ribbon N is formed between the two links processed immediately before.

[0102] Of course, what is shown here is merely one example of an embodiment of the present invention, and it goes without saying that the form and configuration can be changed in various ways within the scope of the basic concept of the present invention. The reference numerals used in the claims are merely for the purpose of making the claims easier to understand by referring to the above description and drawings, and do not limit the scope of protection.

[0103] The above description of specific embodiments is intended to clearly illustrate the concept of the present invention, and it is understood that a third party utilizing the prior art can modify or improve the specific embodiments to suit various applications without conducting additional research or departing from the concept of the present invention. Accordingly, such modifications and improvements are considered equivalent to the specific embodiments.

[0104] The means and materials used to realize the various functions described above can be of various forms, as long as they do not deviate from the scope of the present invention.

[0105] Furthermore, it should be noted that the terms and expressions used herein are for illustrative purposes only and do not limit the present invention.

[0106] Of course, it goes without saying that the details of the configurations and embodiments described and illustrated above as examples can be modified in various ways without impairing the principles of the present invention, as long as they do not deviate from the scope of the present invention.

[0107] When reference numerals or numbers are used to describe the structural features or technical means described in subsequent claims, these reference numerals are solely for the purpose of clarifying the content of the claims and do not have the effect of limiting the interpretation of each element identified thereby.

Claims

1. A machine (1) that weaves a ribbon (N) into the links (M) of a chain (C) in a wavy pattern, A control feeding mechanism (10) for the chain (C) is configured to move the chain (C) on a horizontal plane (X,Y) in predetermined steps such that the links (M) of the chain (C) are located in the processing area, The insertion mechanism (20) for the ribbon (N) comprises a clamp block (22) that is movable in the vertical direction (Z) and perpendicular to the horizontal plane (X,Y), the clamp block comprising a first gripper (23) and a second gripper (24), the grippers (23,24) gripping and fixing rigid guide members (G, GA) attached to the first end (N1) of the ribbon (N), and configured to periodically guide or lead the rigid guide members (G, GA) through the links (M) of the chain (C), The guide mechanism (30) for the ribbon (N) comprises two arms (32, 33) positioned opposite each other with respect to the horizontal plane (X, Y) of the control feeding mechanism (10) on which the chain (C) is placed, the arms being movable at an angle, each arm (32, 33) having finger-shaped ends (P1, P2) that engage with the ribbon (N) to slide and guide it, and the guide mechanism (30) is configured such that after the rigid guide members (G, GA) have passed, the insertion of the ribbon (N) into the links (M) of the chain (C) is completed. A machine characterized by being equipped with the following features.

2. A machine (1) for weaving a ribbon (N) according to claim 1 into a link (M) of a chain (C), The control feeding mechanism (10) preferably includes a horizontal transport surface (11), The chain (C) is placed on the conveying surface and moved linearly along its long axis by the carriage (CAR), The carriage is characterized by having two arms (B1, B2) each equipped with hooks (G1, G2) at both ends, and is configured to allow the link (M) to be precisely positioned on the vertical axis (Z) of the clamp block (22).

3. A machine (1) for weaving a ribbon (N) according to claim 1 into a link (M) of a chain (C), The control feeding mechanism (10) preferably has a horizontal conveying surface (11), the chain (C) is arranged to move linearly along its long axis on the conveying surface (11), the movement is controlled by a photoelectric sensor (FOT), and the link (M) is precisely positioned on the vertical axis (Z) of the clamp block (22).

4. A machine (1) for weaving a ribbon (N) according to any of the above claims into a link (M) of a chain (C), The ribbon (N) insertion mechanism (20) includes a clamp block (22) that can move vertically (Z) along the guide rail (BGI), The machine is characterized in that the clamp block (22) comprises a first gripper (23) and a second gripper (24) for gripping and fixing rigid guide members (G, GA).

5. A machine (1) for weaving a ribbon (N) according to claim 4 into a link (M) of a chain (C), The first gripper (23) and the second gripper (24) each have a plurality of claw portions (23a, 23b; 24a, 24b), The operation of these grippers (23, 24) is performed by a pneumatic piston (OP), which pushes and pulls the claws (23a, 23b; 24a, 24b) by the rotation of two gears (RD), thereby moving the grippers to an open or closed position.

6. A machine (1) for weaving a ribbon (N) according to any of the above claims into a link (M) of a chain (C), The guide mechanism (30) for the ribbon (N) comprises two arms (32, 33) positioned on opposite sides of the plane of the control feeding mechanism (10), The machine is characterized in that each of the arms (32, 33) is configured to move diagonally on a corresponding guide rail (BGC).

7. A machine (1) for weaving a ribbon (N) into a link (M) of a chain (C) according to claim 6, The machine is characterized in that each arm (32, 33) is provided with finger-like ends (P1, P2) configured to grasp a ribbon (N).

8. A machine (1) for weaving a ribbon (N) according to claim 7 into a link (M) of a chain (C), The machine is characterized in that the finger-shaped ends (P1, P2) are detachable pins.

9. A machine (1) for weaving a ribbon (N) into a link (M) of a chain (C) according to claim 8, The machine is characterized in that the finger-shaped ends (P1, P2) are provided with small holes that form an air layer to minimize friction between the ribbon (N) and the finger-shaped ends (P1, P2).

10. A machine (1) for weaving a ribbon (N) according to claim 9 into a link (M) of a chain (C), The machine is characterized in that the finger-shaped ends (P1, P2) are further provided with counter fingers (P3, P4) for holding down the ribbon (N) and preventing twisting.

11. A machine (1) for weaving a ribbon (N) according to claim 8 into a link (M) of a chain (C), The machine is characterized in that the finger-shaped ends (P1, P2) are equipped with needle bearings or ball bearings, and in addition to the finger-shaped ends (P1, P2), the counter fingers (P3, P4) are equipped with needle bearings or ball bearings for holding down the ribbon (N) and preventing twisting.

12. A machine (1) for weaving a ribbon (N) according to any of the above claims onto a link (M) of a chain (C), wherein the ribbon (N) guide mechanism (30) comprises an idler roller (RR), the idler roller intervening in an operating position precisely at the height of the chain (C) during the process of the webbing (N) being pulled, and returning to a retracted non-operating position during the process of the rigid guide members (G, GA) passing through the chain (C).

13. A machine (1) for weaving a ribbon (N) according to claim 12 into links (M) of a chain (C), wherein the idler roller (RR) is equipped with a bearing (CUS) for reducing friction.

14. A method of weaving a ribbon (N) into the links (M) of a chain (C) in a wavy pattern, a) Prepare the ribbon (N) with rigid guide members (G, GA) attached to the first end (N1), b) Install the control feed mechanism (10) for the chain (C), c) Install the ribbon (N) insertion mechanism (20), d) Install the two guide mechanisms (30) of the ribbon (N), e) Using the control feed mechanism (10), the chain (C) is positioned such that the link (Mi) to be processed is located on the vertical axis (Z) of the insertion mechanism (20), f) Using the insertion mechanism (20), the rigid guide members (G, GA) are grasped in a part of the space below or above the control feeding mechanism (10) of the chain (C). g) After completing the insertion of the rigid guide members (G, GA) into the link (Mi), pass the ribbon (N) through the link (Mi) to be processed. h) Activate the insertion mechanism (20) and move it along the guide rail (BGI) in a direction to insert the ribbon (N) into the link (Mi) to be processed, that is, move it vertically through the link (Mi) to be processed from bottom to top or from top to bottom. i) Continue moving the insertion mechanism (20) until it reaches the end position of the guide rail (BGI), j) Rotate the insertion mechanism (20) by 180 degrees, maintaining the ribbon (N) in a taut state and keeping it perpendicular to the chain (C), k) The guide mechanism (30), located on the same side as the insertion mechanism (20) with respect to the chain (C), is operated to move along the guide rail (BGC) in a direction approaching the ribbon (N). l) The guide mechanism (30) grips the ribbon (N) and maintains the state in which the ribbon is taut, m) The guide mechanism (30) is operated again along the guide rail (BGC) to return it to its initial position so that the ribbon (N) is positioned at the rear, and as long as sufficient tension is maintained as the ribbon (N) passes through the link (Mi) being processed, the guide mechanism (30) will not slide. n) Repeat steps (e) through (m) for all links (Mi+1) of the chain (C). A method that includes processing.

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