Curved surface matching type elastic line broken material clamping and braking device and manufacturing equipment of disposable hygienic products thereof

Abstract

The utility model relates to a curved surface matching type elastic line broken material clamping and braking device which comprises at least one retaining seat and at least one clamping piece. The holding base is provided with a sliding groove of a conical structure extending in the elastic line conveying flow direction so as to form a first conical curved surface, and the first conical curved surface enables the sliding groove to form an inlet and an outlet. The width of the outlet is greater than that of the inlet in the transverse direction; the elastic wire enters the chute from the inlet and extends out of the chute from the outlet; the clamping piece is embedded into the sliding groove, and the clamping piece is configured to do reciprocating motion in the sliding groove in the conveying process direction of the elastic line; and the clamping piece is used for stopping the elastic wire from retracting in the retracting direction when the elastic wire is broken at the elastic wire breaking point and moves towards the inlet direction of the sliding groove under the action of gravity. According to the utility model, the problems of failure in clamping and braking and no operation space caused by reduction of the surface width of a clamping piece and no operation space due to a horizontal conveying mode of the conventional elastic wire breakage clamping and braking device and when the distance between the elastic wires is smaller than 5mm are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable sanitary product manufacturing equipment, in particular to the fields of sanitary napkins, diapers, pull-up pants, and more particularly to a curved surface matching type elastic wire material breaking clamping and braking device. Background Art

[0002] Elastic thread materials are widely used in disposable sanitary products, such as disposable diapers of disposable sanitary products, which include an outer coating layer and an absorbent core arranged inside the outer coating layer, wherein the outer coating layer is an elastic composite structure, usually composed of an outer sheet, an inner sheet, and an elastic thread material arranged between the outer sheet and the inner sheet. Conventional elastic thread materials can be natural rubber strips (threads) or synthetic filamentous (root-shaped) elastic spandex threads, etc. Then, in the manufacturing equipment of disposable sanitary products, a series of process devices for unwinding, conveying, and cutting of elastic thread materials must be set. However, due to its elasticity, the elastic thread material has a certain tension during its operation. However, when the elastic thread material is broken, it will retract from the breaking point to the upper and downstream sides due to the disappearance of tension. In order to prevent the elastic thread material from breaking and retracting, resulting in a large amount of manual time for re-pulling the process path, a material breaking clamping brake device is set at an appropriate position of the elastic thread process to stop the movement of the elastic thread.

[0003] In today's disposable diapers, the elastic threads arranged in the outer covering layer are required to be thinner and denser to increase the contact area with the human body and make it comfortable to wear (no ribs). Taking elastic spandex yarn as an example, the original 620dtex is changed to 140dtex, and the spacing between adjacent spandex yarns needs to be changed from the original conventional 5mm to 2mm. This kind of disposable diaper is usually called a fine-denier waist disposable diaper. This product generally requires dozens or even hundreds of elastic threads.

[0004] Existing elastic wire clamping and braking devices, such as the structure of US Pat. No. 10899574B2, have a pin connected to a base structure, the pin having a rotation axis; a rotating counterweight cam that can rotate around the rotation axis is arranged outside the circumference of the pin, and a bottom retaining seat positioned adjacent to the rotating counterweight cam. The device is arranged in such a way that the elastic wire is conveyed horizontally, and the side dimension in the width direction defines the spacing between the laid elastic wires. When the spacing between the elastic wires is smaller (such as 2 mm), the surface width of the rotating counterweight cam can only be reduced. However, the reduction in the surface width of the rotating counterweight cam (which may be only 1 mm) will result in a greater probability that the elastic wire will run out of the rotating counterweight cam when it retracts, resulting in a failure of clamping and braking.

[0005] In addition, when the elastic thread is initially pulled into the elastic thread clamping and braking device, the above-mentioned structural scheme is inserted from the side. When the number of elastic threads is large and the spacing is ≤10mm, there is no operating space and the elastic thread clamping and braking devices must be staggered (not in parallel) along the process direction. Otherwise, it is difficult to pull the elastic thread through the rotating counterweight cam. Therefore, this structure is not suitable for manufacturing equipment for disposable diapers with fine denier products in which the elastic threads are very thin and densely arranged. Utility Model Content

[0006] The utility model provides a curved surface matching type elastic wire material breaking clamping and braking device to solve the technical problems that in the existing elastic wire clamping and braking device, when the elastic wire spacing is less than 5mm in a horizontal conveying mode, the width of the clamping piece surface is reduced, resulting in clamping and braking failure, and the elastic wire spacing is too small to cause no operating space.

[0007] The technical solution provided by the utility model is as follows:

[0008] One object of the utility model is to provide a curved surface matching type elastic wire breaking clamping and braking device, the clamping and braking device is preset at the upstream side of the elastic wire breaking point, and at least includes a retaining seat and a clamping member;

[0009] The retaining seat is provided with a chute of a conical structure extending along the process direction of the elastic line conveying, so as to form a first conical surface on the inner surface of the chute, and the first conical surface enables the chute to form an inlet and an outlet;

[0010] In the transverse direction, the width of the outlet is greater than the width of the inlet; the transverse direction is perpendicular to the flow direction of the elastic wire conveying;

[0011] The elastic wire enters the chute from the inlet, and moves along the inner wall of the first conical surface of the chute, and then extends out of the chute from the outlet, and is transported to the downstream side along the process direction of the elastic wire transport;

[0012] The clamping member is embedded in the chute, and the clamping member is configured to reciprocate in the chute along the flow direction of the elastic wire; wherein the elastic wire is arranged between the retaining seat and the clamping member;

[0013] The clamping member is used to move toward the entrance direction of the chute under the action of gravity when the elastic line breaks at the elastic line breaking point, so as to stop the elastic line from retracting toward the upstream side along the retraction direction.

[0014] In a preferred embodiment, the clamping member comprises a clamping body, and the outer surface of the clamping body is a second conical surface; the second conical surface matches the first conical surface;

[0015] The elastic line is arranged between the first conical surface and the second conical surface;

[0016] When the elastic line is being transported normally, under the action of the tension of the elastic line, the clamping body is driven to move toward the outlet direction of the chute, so that the second conical surface is away from or in contact with the first conical surface;

[0017] When the elastic wire breaks at the elastic wire breaking point, the clamping body moves toward the entrance of the slide groove under the action of gravity, so that the second conical surface contacts the first conical surface, thereby stopping the movement of the elastic wire arranged between the first conical surface and the second conical surface, so that the elastic wire no longer retracts to the upstream side.

[0018] In a preferred embodiment, the clamping brake device also includes: a fixing member, which is arranged at the outlet of the slide groove to limit the reciprocating motion of the clamping member in the slide groove along the process direction of the elastic line conveying, so as to prevent the clamping member from sliding out of the slide groove.

[0019] In a preferred embodiment, the first conical surface of the slide groove of the retaining seat is a conical surface; the clamping member is a spherical structure; the clamping member is embedded in the slide groove, and the elastic line is arranged between the first conical surface and the outer peripheral surface of the spherical structure of the clamping member;

[0020] When the elastic wire is being transported normally, under the action of the tension of the elastic wire, the clamping member is driven to move toward the outlet direction of the chute, so that the outer peripheral surface of the spherical structure of the clamping member is away from or in contact with the first conical surface;

[0021] When the elastic line breaks at the elastic line breaking point, the clamping member moves toward the entrance direction of the slide groove under the action of gravity, so that the outer peripheral surface of the spherical structure of the clamping member contacts the first conical surface, thereby stopping the movement of the elastic line arranged between the first conical surface and the outer peripheral surface of the spherical structure of the clamping member, so that the elastic line no longer retracts to the upstream side.

[0022] In a preferred embodiment, the clamping member is a spherical structure, and there are two clamping members;

[0023] The two clamping members are embedded in the slide groove along the flow direction of the elastic line conveying.

[0024] In a preferred embodiment, there are two retaining seats, and the two retaining seats are arranged along the process direction of the elastic line conveying;

[0025] Along the process direction of the elastic line conveying, the slide groove of one holding seat corresponds to the slide groove of another holding seat;

[0026] The clamping member is a spherical structure, and there are two clamping members;

[0027] One of the clamping members is embedded in a slide groove of one of the retaining seats, and the other of the clamping members is embedded in a slide groove of another of the retaining seats;

[0028] In a preferred embodiment, the retaining seat further comprises a threading groove for threading the elastic wire, which is opened along the process direction of the elastic wire conveying, and the threading groove is connected to the first conical surface.

[0029] Another object of the present invention is to provide a manufacturing device for disposable sanitary products, wherein at least one clamping manufacturing device is arranged in sequence along the width direction, wherein the width direction is perpendicular to the process direction of the elastic thread conveying.

[0030] Compared with the prior art, the above technical solution of the utility model has at least the following beneficial effects:

[0031] The utility model provides a curved surface matching type elastic wire material breaking clamping and braking device, wherein a retaining seat is provided with a slide groove of a conical structure extending along the process direction of the elastic wire conveying to form a first conical curved surface on the inner surface of the slide groove, so that the slide groove forms an entrance and an exit; in the horizontal direction, the width of the exit is greater than the width of the entrance; a clamping member is embedded in the slide groove, and reciprocates in the slide groove along the process direction of the elastic wire conveying; when the elastic wire breaks at the elastic wire breaking point, the clamping member moves toward the entrance direction of the slide groove under the action of gravity, and stops the elastic wire from retracting toward the upstream side along the retraction direction by means of the matching of the conical curved surface, effectively solving the problem that in the horizontal conveying mode of the existing elastic wire material breaking clamping and braking device, when the elastic wire spacing is less than 5mm, the surface width of the clamping member is reduced, resulting in clamping and braking failure, and the elastic wire spacing is too small, resulting in no operating space.

[0032] The utility model is a curved surface matching type elastic thread material breaking clamping and braking device, which is placed in the vertical direction, so that the spacing between the elastic threads can be reduced to 2mm, and the size of the elastic thread material breaking clamping and braking device does not need to be reduced, and the success rate of clamping and braking will not be affected at all. In addition, the elastic thread is inserted from the front of the clamping part, which is 90° to the insertion method of the elastic thread material breaking clamping and braking device in the prior art, so there is no problem with the operating space. In addition to being suitable for the production equipment of conventional disposable diapers, the utility model is particularly suitable for the fine denier waist products of disposable diapers. It greatly solves the big problem of re-pulling and splicing the elastic thread after the elastic thread breaks in the fine denier waist products (because the elastic threads in the fine denier products are more and denser).

[0033] The utility model is a curved surface matching type elastic wire material clamping and braking device, which is small in size, easy to process parts, low in cost, does not require electrical control, and uses a mechanical structure to achieve braking of the elastic wire, and is applied to the manufacturing equipment of disposable sanitary products. It can be set at any required position, is not restricted by process and space, and saves a lot of time for connecting the elastic wire, thereby improving the production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a front view of a curved surface matching type elastic wire material cutting clamping and braking device in the first embodiment of the utility model.

[0036] Figure 2 It is a schematic diagram of the separation of a retaining seat and a clamping member of a curved surface matching elastic wire material breaking clamping and braking device in Embodiment 1 of the present utility model.

[0037] Figure 3 It is a side view of a curved surface matching type elastic wire material cutting clamping and braking device in the first embodiment of the utility model.

[0038] Figure 4 It is a top view of a curved surface matching elastic wire material cutting clamping and braking device in the first embodiment of the utility model.

[0039] Figure 5 It is a front view of a curved surface matching elastic wire material cutting clamping and braking device in the second embodiment of the utility model.

[0040] Figure 6 It is a front view of a curved surface matching elastic wire material cutting clamping and braking device in the third embodiment of the present utility model.

[0041] Figure 7 It is a front view of a curved surface matching elastic wire material cutting clamping and braking device in the fourth embodiment of the utility model.

[0042] Figure 8 The utility model is a schematic diagram of a curved surface matching type elastic wire material breaking clamping and braking device applied to a manufacturing device for disposable sanitary products. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0045] It should be noted that the terms "up", "down", "left", "right", "front", "back", etc. used in the present invention are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0046] Embodiment 1.

[0047] like Figure 1 As shown, during the process of the elastic thread P being conveyed forward along the process direction a of the elastic thread conveying, after the elastic thread P is broken at the elastic thread breaking point P', the elastic thread P located on the upstream side of the elastic thread breaking point P' retracts toward the upstream side due to the disappearance of the tension of the elastic thread P. The direction of retraction toward the upstream side is defined as the retraction direction c. In the present utility model, the retraction direction c refers to the direction opposite to the process direction a of the elastic thread P conveying.

[0048] The process direction a of the elastic line P of the utility model along the elastic line is the vertical direction. Figure 1 The process direction a shown is from bottom to top. The vertical direction here is relative to the horizontal direction of transportation, which does not mean that the process direction a of the elastic line transportation is completely straight.

[0049] Combination Figures 1 to 4According to an embodiment of the utility model, a curved surface-matched elastic wire breaking clamping and braking device 1 is provided, which is used to brake the elastic wire P after the elastic wire breaks at the breaking point P' during the process of conveying the elastic wire P along the process direction a of the elastic wire conveying to the downstream side, so as to prevent the elastic wire P from retracting to the upstream side (retraction direction c) due to the disappearance of tension.

[0050] It is worth noting that the elastic thread breaking point P' here is the point where the elastic thread P is prone to breaking in the manufacturing equipment of disposable sanitary products. There may be multiple workstations in the process, and the position where the elastic thread P is prone to breaking during the conveying process is the elastic thread breaking point P'.

[0051] The utility model provides a curved surface matching type elastic wire material breaking clamping and braking device 1, which comprises a retaining seat 11, a clamping piece 12 and a fixing piece 13.

[0052] The retaining seat 11 is provided with a conical slide groove 111 extending along the flow direction of the elastic wire conveying to form a first conical surface 1111 on the inner surface of the slide groove 111 . The first conical surface 1111 enables the slide groove 111 to form an inlet I and an outlet O.

[0053] Along the transverse direction d, the width of the outlet O is greater than the width of the inlet I. The transverse direction d is perpendicular to the flow direction a of the elastic line conveying. The elastic line P enters the chute 111 from the inlet I, and along the inner wall of the first conical surface 1111 of the chute 111, and then extends out of the chute 111 from the outlet O, and is conveyed to the downstream side along the flow direction a of the elastic line conveying.

[0054] The clamping member 12 is embedded in the slide slot 111 and is configured to reciprocate in the slide slot 111 along the flow direction a of the elastic wire conveying. The elastic wire P is disposed between the retaining seat 11 and the clamping member 12 .

[0055] The clamping member 12 is used to move the elastic wire P toward the entrance I of the chute 111 under the action of gravity when the elastic wire breaks at the breaking point P', so as to stop the elastic wire P from retracting toward the upstream side along the retraction direction c.

[0056] Specifically, in this embodiment, the clamping member 12 includes a clamping body 122, and the outer surface of the clamping body 122 is a second conical surface 121. The second conical surface 121 matches the first conical surface 1111. The elastic line P is disposed between the first conical surface 1111 and the second conical surface 121.

[0057] When the elastic wire P is normally transported, the tension of the elastic wire P drives the clamping body 122 (clamping member 12 ) to move toward the outlet O of the slide slot 111 , so that the second conical surface 121 moves away from or contacts the first conical surface 1111 .

[0058] That is, in actual situations, the tension of the elastic line P is not constant during operation (it is constant under ideal conditions), that is, sometimes the tension is larger and sometimes it is smaller. When the clamping body 122 (clamping member 12) is under the action of the larger tension of the elastic line P, the clamping body 122 (clamping member 12) moves toward the outlet O of the chute 111, so that the second conical surface 121 moves away from the first conical surface 1111. At this time, a gap is formed between the second conical surface 121 and the first conical surface 1111 (this gap varies depending on the tension of the elastic line P), and the elastic line P is transported to the downstream side through the gap between the second conical surface 121 and the first conical surface 1111.

[0059] In another case, when the elastic line P is under the action of a small tension, the clamping body 122 (clamping member 12) moves toward the outlet O of the slide groove 111, because the elastic line P generates a small tension, the second conical surface 121 of the clamping body 122 (clamping member 12) is not completely separated from the first conical surface 1111 of the retaining seat 11. At this time, the second conical surface 121 of the clamping body 122 (clamping member 12) and the first conical surface 1111 of the retaining seat 11 are in contact. The contact here is just the second conical surface 121 colliding with the first conical surface 1111 through the elastic line P, and there is no clamping state.

[0060] Therefore, during the operation of the elastic wire P, due to the different tensions of the elastic wire P, the clamping member 12 reciprocates in the slide groove 111 along the process direction a of the elastic wire conveying, so that the elastic wire P is always in a state of contact or distance between the first conical surface 1111 and the second conical surface 121, switching back and forth.

[0061] When the elastic line P breaks at the elastic line breaking point P', the clamping body 122 (clamping member 12) moves toward the entrance I of the slide groove 111 under the action of gravity, so that the second conical surface 121 contacts the first conical surface 1111, thereby stopping the movement of the elastic line P arranged between the first conical surface 1111 and the second conical surface 121, so that the elastic line P no longer retracts to the upstream side.

[0062] When the elastic line P breaks at the elastic line breaking point P', the tension of the elastic line P disappears, and the clamping body 122 (clamping part 12) moves toward the entrance I of the slide groove 111 under the action of gravity, and the second conical surface 121 of the clamping body 122 (clamping part 12) contacts the first conical surface 1111 of the retaining seat 11 (which is opposite to the direction in which the clamping body 122 (clamping part 12) moves toward the exit O of the slide groove 111 under the tension of the elastic line P during normal transportation). The elastic line P is clamped and braked by the second conical surface 121 of the clamping body 122 (clamping part 12) and the first conical surface 1111 of the retaining seat 11. Therefore, the "contact" here is different from the "contact" expressed when the elastic line P is normally transported.

[0063] Furthermore, in this embodiment, the clamping brake device 1 further includes a fixing member 13. The fixing member 13 is disposed at the outlet O of the chute 111 to limit the reciprocating movement of the clamping member 12 in the chute 111 along the flow direction a of the elastic line conveying, thereby preventing the clamping member 12 from slipping out of the chute 111.

[0064] The retaining seat 11 further includes a threading groove 112 for threading the elastic thread P, which is opened along the process direction a of the elastic thread conveying, and the threading groove 112 is connected to the first conical surface 1111 .

[0065] Embodiment 2.

[0066] The difference between this embodiment and the first embodiment is that the first conical surface 1111 of the sliding groove 111 of the retaining seat 11 is a conical surface, and the clamping member 12 is a spherical structure.

[0067] like Figure 5 As shown, the utility model provides a curved surface matching type elastic wire material breaking clamping and braking device 1, which includes a retaining seat 11, a clamping member 12 and a fixing member 13.

[0068] The retaining seat 11 is provided with a conical slide groove 111 extending along the flow direction of the elastic wire conveying to form a first conical surface 1111 on the inner surface of the slide groove 111 . The first conical surface 1111 enables the slide groove 111 to form an inlet I and an outlet O.

[0069] Along the transverse direction d, the width of the outlet O is greater than the width of the inlet I. The transverse direction d is perpendicular to the flow direction a of the elastic line conveying. The elastic line P enters the chute 111 from the inlet I, and along the inner wall of the first conical surface 1111 of the chute 111, and then extends out of the chute 111 from the outlet O, and is conveyed to the downstream side along the flow direction a of the elastic line conveying.

[0070] The clamping member 12 is embedded in the slide slot 111 and is configured to reciprocate in the slide slot 111 along the flow direction a of the elastic wire conveying. The elastic wire P is disposed between the retaining seat 11 and the clamping member 12 .

[0071] The clamping member 12 is used to move the elastic wire P toward the entrance I of the chute 111 under the action of gravity when the elastic wire breaks at the breaking point P', so as to stop the elastic wire P from retracting toward the upstream side along the retraction direction c.

[0072] Specifically, in this embodiment, the clamping member 12 is a spherical structure. The clamping member 12 is embedded in the slide groove 111 , and the elastic line P is disposed between the first conical surface 1111 and the outer peripheral surface of the spherical structure of the clamping member 12 .

[0073] When the elastic wire P is normally transported, the tension of the elastic wire P drives the clamping member 12 to move toward the outlet O of the slide slot 111 , so that the outer peripheral surface of the spherical structure of the clamping member 12 moves away from or contacts the first conical surface 1111 .

[0074] When the elastic line P breaks at the elastic line breaking point P', the clamping member 12 moves toward the entrance I of the slide groove 111 under the action of gravity, so that the outer peripheral surface of the spherical structure of the clamping member 12 contacts the first conical surface 1111, thereby stopping the movement of the elastic line P arranged between the first conical surface 1111 and the outer peripheral surface of the spherical structure of the clamping member 12, so that the elastic line P no longer retracts to the upstream side.

[0075] Furthermore, in this embodiment, the clamping brake device 1 further includes a fixing member 13. The fixing member 13 is disposed at the exit O of the chute 111 to limit the reciprocating motion of the clamping member 12 in the chute 111 along the flow direction a of the elastic line conveying, thereby preventing the clamping member 12 from slipping out of the chute 111.

[0076] The other structures of this embodiment are the same as those of the first embodiment and will not be described again here.

[0077] Embodiment three.

[0078] The difference between this embodiment and the second embodiment is that there are two clamping members 12 of the spherical structure.

[0079] like Figure 6 As shown, the utility model provides a curved surface matching type elastic wire material breaking clamping and braking device 1, which includes a retaining seat 11, a clamping member 12 and a fixing member 13.

[0080] The retaining seat 11 is provided with a conical slide groove 111 extending along the flow direction of the elastic wire conveying to form a first conical surface 1111 on the inner surface of the slide groove 111 . The first conical surface 1111 enables the slide groove 111 to form an inlet I and an outlet O.

[0081] Along the transverse direction d, the width of the outlet O is greater than the width of the inlet I. The transverse direction d is perpendicular to the flow direction a of the elastic line conveying. The elastic line P enters the chute 111 from the inlet I, and along the inner wall of the first conical surface 1111 of the chute 111, and then extends out of the chute 111 from the outlet O, and is conveyed to the downstream side along the flow direction a of the elastic line conveying.

[0082] The clamping member 12 is embedded in the slide slot 111 and is configured to reciprocate in the slide slot 111 along the flow direction a of the elastic wire conveying. The elastic wire P is disposed between the retaining seat 11 and the clamping member 12 .

[0083] The clamping member 12 is used to move the elastic wire P toward the entrance I of the chute 111 under the action of gravity when the elastic wire breaks at the breaking point P', so as to stop the elastic wire P from retracting toward the upstream side along the retraction direction c.

[0084] Specifically, the clamping member 12 is a spherical structure, and there are two of the clamping members 12. The two clamping members 12 are embedded in the slide groove 111 along the flow direction a of the elastic line conveying.

[0085] Furthermore, in this embodiment, the clamping brake device 1 further includes a fixing member 13. The fixing member 13 is disposed at the exit O of the chute 111 to limit the reciprocating motion of the clamping member 12 in the chute 111 along the flow direction a of the elastic line conveying, thereby preventing the clamping member 12 from slipping out of the chute 111.

[0086] The other structures of this embodiment are the same as those of the second embodiment and will not be described again here.

[0087] Embodiment 4.

[0088] The difference between this embodiment and the second embodiment is that there are two retaining seats 11. Figure 7 As shown, two holding seats 11 are arranged along the flow direction a of the elastic wire conveying.

[0089] Along the flow direction a of the elastic line conveying, the slide groove 111 of one holding seat 11 corresponds to the slide groove 111 of another holding seat 11, and the clamping member 12 is a spherical structure, and there are two clamping members 12. One clamping member 12 is embedded in the slide groove 111 of one holding seat 11, and the other clamping member 12 is embedded in the slide groove 111 of the other holding seat 11.

[0090] in, Figure 7 In the figure, the clamping member 12 in the lower retaining seat 11 moves between the lower retaining seat 11 and the bottom of the upper retaining seat 11 during the operation of the equipment. The movement trajectory of the clamping member 12 is shown in the figure.

[0091] The above embodiments describe a structure in which a single elastic thread P is arranged along the flow direction a of the elastic thread conveying. In practical applications, multiple elastic threads P may be arranged along the width direction b, especially in fine denier products, dozens or even hundreds of elastic threads may be arranged at the same time, wherein the width direction b is perpendicular to the flow direction a of the elastic thread conveying. Therefore, in the manufacturing equipment of disposable sanitary products, at least one of the above-mentioned curved surface matching elastic thread material breaking clamping and braking devices is sequentially arranged along the width direction b, such as Figure 8 As shown, dimension L corresponds to the distance between adjacent elastic lines. In this embodiment, dimension L is set to 2 mm. This structure can also set the spacing between the elastic lines P to be smaller. The specific distance L and the number of elastic lines P set depend on actual conditions.

[0092] The other structures of this embodiment are the same as those of the second embodiment and will not be described again here.

[0093] There are a few points to note:

[0094] (1) The drawings of the embodiments of the present utility model only relate to the structures related to the embodiments of the present utility model, and other structures may refer to the conventional designs.

[0095] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, the thickness of the layers or regions is enlarged or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be an intermediate element.

[0096] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0097] The above are only specific implementation methods of the present utility model, but the protection scope of the present utility model is not limited thereto. The protection scope of the present utility model shall be based on the protection scope of the claims.

Claims

1. A curved surface matching type elastic wire material clamping and braking device, characterized in that: The clamping and braking device is preset at the upstream side of the elastic line breaking point and includes at least one retaining seat and at least one clamping member; The retaining seat is provided with a chute of a conical structure extending along the process direction of the elastic line conveying, so as to form a first conical surface on the inner surface of the chute, and the first conical surface enables the chute to form an inlet and an outlet; In the transverse direction, the width of the outlet is greater than the width of the inlet; the transverse direction is perpendicular to the flow direction of the elastic wire conveying; The elastic wire enters the chute from the inlet, and moves along the inner wall of the first conical surface of the chute, and then extends out of the chute from the outlet, and is transported to the downstream side along the process direction of the elastic wire transport; The clamping member is embedded in the chute, and the clamping member is configured to reciprocate in the chute along the flow direction of the elastic wire; wherein the elastic wire is arranged between the retaining seat and the clamping member; The clamping member is used to move toward the entrance direction of the chute under the action of gravity when the elastic line breaks at the elastic line breaking point, so as to stop the elastic line from retracting toward the upstream side along the retraction direction.

2. The clamping brake device according to claim 1, characterized in that: The clamping member comprises a clamping body, the outer surface of which is a second conical surface; the second conical surface matches the first conical surface; The elastic line is arranged between the first conical surface and the second conical surface; When the elastic line is being transported normally, under the action of the tension of the elastic line, the clamping body is driven to move toward the outlet direction of the chute, so that the second conical surface is away from or in contact with the first conical surface; When the elastic wire breaks at the elastic wire breaking point, the clamping body moves toward the entrance of the slide groove under the action of gravity, so that the second conical surface contacts the first conical surface, thereby stopping the movement of the elastic wire arranged between the first conical surface and the second conical surface, so that the elastic wire no longer retracts to the upstream side.

3. The clamping brake device according to claim 1, characterized in that: The clamping brake device also includes: a fixing member, which is arranged at the outlet of the slide slot to limit the reciprocating movement of the clamping member in the slide slot along the process direction of the elastic line conveying to prevent the clamping member from sliding out of the slide slot.

4. The clamping brake device according to claim 1, characterized in that: The first conical surface of the slide groove of the retaining seat is a conical surface; the clamping member is a spherical structure; the clamping member is embedded in the slide groove, and the elastic line is arranged between the first conical surface and the outer peripheral surface of the spherical structure of the clamping member; When the elastic wire is being transported normally, under the action of the tension of the elastic wire, the clamping member is driven to move toward the outlet direction of the chute, so that the outer peripheral surface of the spherical structure of the clamping member is away from or in contact with the first conical surface; When the elastic line breaks at the elastic line breaking point, the clamping member moves toward the entrance direction of the slide groove under the action of gravity, so that the outer peripheral surface of the spherical structure of the clamping member contacts the first conical surface, thereby stopping the movement of the elastic line arranged between the first conical surface and the outer peripheral surface of the spherical structure of the clamping member, so that the elastic line no longer retracts to the upstream side.

5. The clamping brake device according to claim 4, characterized in that: The clamping member is a spherical structure, and there are two clamping members; The two clamping members are embedded in the slide groove along the flow direction of the elastic line conveying.

6. The clamping brake device according to claim 4, characterized in that: There are two retaining seats, and the two retaining seats are arranged along the process direction of the elastic line conveying; Along the process direction of the elastic line conveying, the slide groove of one holding seat corresponds to the slide groove of another holding seat; The clamping member is a spherical structure, and there are two clamping members; One of the clamping members is embedded in the sliding groove of one of the retaining seats, and the other of the clamping members is embedded in the sliding groove of the other of the retaining seats.

7. The clamping brake device according to claim 1, characterized in that: The retaining seat also includes a threading groove for threading the elastic wire, which is opened along the process direction of the elastic wire conveying, and the threading groove is connected to the first conical surface.

8. A manufacturing device for disposable sanitary products, characterized in that: At least one clamping and braking device according to any one of claims 1 to 7 is arranged in sequence along the width direction, wherein the width direction is perpendicular to the flow direction of the elastic wire conveyance.

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