Tubular object weaving equipment and warp conveying mechanism thereof

Abstract

The utility model discloses tubular object weaving equipment and a warp conveying mechanism thereof. The warp conveying mechanism comprises a plurality of warp displacement assemblies arranged at intervals, each warp displacement assembly comprises a mounting frame and a driving part connected with the mounting frame, and the driving parts are used for driving the mounting frames to ascend and descend; wherein the mounting frame is provided with warp passing channels, each warp passing channel is arranged to allow one warp to pass through, and the warp can swing up and down by driving the different warp displacement assemblies to ascend and descend. By adopting the equipment, the impermeability of the formed tubular braided fabric can be ensured.

Description

Technical Field

[0001] The present application relates to the technical field of manufacturing devices for medical equipment, and in particular to a tubular braiding device and a warp transmission mechanism thereof. Background Art

[0002] Artificial blood vessels are widely used in vascular surgery, and their main uses include vascular replacement, bypass and hybrid surgery. Commercially available artificial blood vessels are mainly divided into two categories, one is made of extruded materials such as ePTFE, and the other is woven from polyester materials. Polyester braided artificial blood vessels have a good patency rate and good mechanical properties, and can be used as large-caliber blood vessels for a long time. However, simple braided blood vessels have large pores and high water permeability (greater than 400mL / min·cm2), and usually require coating pre-coagulation treatment.

[0003] In existing solutions, artificial blood vessels can usually be formed by alternately weaving multiple warp threads and weft threads using a weaving device. However, it is usually difficult for existing weaving devices to ensure the impermeability of the formed woven fabric. Utility Model Content

[0004] In order to solve the defects existing in the prior art, the purpose of the utility model is to provide a tubular article braiding device and a warp transmission mechanism thereof to solve the above technical problems.

[0005] In order to achieve the above purpose, a technical solution adopted by the utility model is: to provide a warp transmission mechanism of a tubular article weaving device, the warp transmission mechanism comprising:

[0006] A plurality of warp displacement assemblies arranged at intervals, each of the warp displacement assemblies comprising a mounting frame and a driving member connected to the mounting frame, the driving member being used to drive the mounting frame to perform lifting motion;

[0007] Wherein, the installation frame is provided with a wire passing channel, each of the wire passing channels is configured to allow a warp thread to pass through, and the warp thread is swung up and down by driving different warp thread displacement components to perform lifting and lowering movements.

[0008] Optionally, a plurality of mounting bars are disposed on each of the mounting frames, and each of the mounting bars is provided with a through hole, and the through hole is used to form the wire passage.

[0009] Optionally, the mounting frame has two parallel sliding rods that are spaced apart from each other, and opposite ends of each mounting strip are respectively sleeved and slidably disposed on the two sliding rods.

[0010] Optionally, the mounting bar is a flexible member, and the through hole is opened in a middle area of ​​the mounting bar.

[0011] Optionally, a plurality of the warp displacement components are arranged at equal intervals along the transmission direction of the warp;

[0012] Optionally, the arrangement heights of the plurality of warp displacement assemblies along the transmission direction of the warp gradually decrease.

[0013] Optionally, each of the warp displacement assemblies further comprises a mounting rod and a mounting frame, one end of the mounting rod is mounted on the mounting frame, and the main body of the driving member is fixedly mounted on the other end of the mounting rod; the piston rod of the driving member is connected to the mounting frame;

[0014] The installation rod is configured to be retractable so as to adjust the initial installation height of the driving member.

[0015] Optionally, one end of the mounting rod is movably connected to the mounting frame via a fisheye bearing.

[0016] Optionally, the warp transmission mechanism also includes a guide rail assembly, which includes two guide members that are arranged opposite to each other and at a distance from each other, and the two guide members are respectively provided with guide grooves facing each other, and the opposite sides of each mounting frame are respectively accommodated in the guide grooves of the two guide members.

[0017] In order to achieve the above purpose, a technical solution adopted by the utility model is: to provide a tubular braiding device, the tubular braiding device comprising:

[0018] An unwinding mechanism, a warp transmission mechanism as described above, a weft transmission mechanism and a winding mechanism are sequentially arranged;

[0019] The unwinding mechanism comprises an unwinding roller, the unwinding roller is used to wind a plurality of warps, the plurality of warps are released as the unwinding roller rotates, and one end of each of the plurality of warps passes through the warp transmission mechanism and the weft transmission mechanism and then is wound to the winding mechanism;

[0020] Wherein, the unwinding roller is connected to a pressure sensor, which is used to detect whether the unwinding roller has adjusted the tension of the warp. When it is detected that the tension of the warp exceeds a set value, a trigger signal is sent to control the rotation of the unwinding roller to adjust the tension of the warp.

[0021] The present application provides a tubular braiding device and a warp transmission mechanism thereof. In the scheme of the present application, a plurality of warps are respectively arranged through a plurality of warp displacement assemblies arranged at intervals, and then by adjusting the initial height of the wire passage in each warp displacement assembly respectively, it is possible to divide a plurality of groups of warps into two layers, upper and lower, and alternately swing up and down, and then by using continuous wefts to weave the intersection of the upper and lower layers of warps, a tubular braid can be formed. Furthermore, by adjusting the initial height of the wire passage in each warp displacement assembly respectively, it is possible to ensure that the amplitude of each warp when swinging up and down alternately is as small as possible, so that the tension of the warp is stable during the braiding process, and the impermeability of the tubular braid can be improved. In addition, by providing a plurality of mounting frames that can independently perform lifting movements, and by setting a specific lifting cycle for each mounting frame, the formed tubular braid can have a preset pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment of a warp transmission mechanism of a tubular article braiding device provided by the present application;

[0023] Figure 2 yes Figure 1 A schematic structural diagram of a warp displacement assembly in the warp transmission mechanism shown;

[0024] Figure 3 It is a structural schematic diagram of an embodiment of a tubular braiding device provided by the present application;

[0025] Figure 4 yes Figure 3 A schematic diagram showing the direction of the warp threads in the tubular braiding device shown;

[0026] Figure 5 yes Figure 3 A schematic diagram of a braiding shuttle assembly in the tubular braiding device shown;

[0027] Figure 6 yes Figure 3 A schematic diagram of a swing-buckle assembly in a tubular braiding device is shown. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] See also Figure 1-Figure 2 , Figure 1 It is a structural schematic diagram of an embodiment of a warp transmission mechanism of a tubular article braiding device provided by the present application; Figure 2 yes Figure 1 A schematic structural diagram of the warp displacement assembly in the warp transmission mechanism shown.

[0035] Among them, the warp transmission mechanism 10 includes: a plurality of warp displacement components 110 arranged at intervals, each warp displacement component 110 includes a mounting frame 111 and a driving member 112 connected to the mounting frame 111, and the driving member 112 is used to drive the mounting frame 111 to perform lifting movements; wherein, the mounting frame 111 is provided with a wire passing channel 101, and each wire passing channel 101 is configured to allow a warp to pass through, and by driving different warp displacement components to perform lifting movements, the warp can be swung up and down.

[0036] Therefore, in the scheme of the present application, multiple warps are respectively arranged through multiple spaced warp displacement components, and then by adjusting the initial height of the wire passage 101 in each warp displacement component, multiple groups of warps can be divided into upper and lower layers to swing up and down alternately, and then by using continuous wefts to weave the intersection of the upper and lower layers of warps, a tubular braid can be formed. Furthermore, by adjusting the initial height of the wire passage 101 in each warp displacement component, it can be ensured that the amplitude of each warp when swinging up and down alternately is as small as possible, so that the tension of the warp is stable during the weaving process, and the impermeability of the tubular braid can be improved. In addition, by providing multiple installation frames 111 that can perform lifting movements independently, and by setting a specific lifting cycle for each installation frame 111, the formed tubular braid can have a preset texture.

[0037] In this embodiment, a plurality of mounting bars 1111 are disposed on each mounting frame 111 , and each mounting bar 1111 is provided with a through hole, and the through hole is used to form a wire passage 101 .

[0038] Each through hole is opened at the middle position of the corresponding mounting strip 1111 , and sleeve holes are opened at both ends of each mounting strip 1111 .

[0039] Among them, the installation frame 111 can be set as a square frame, wherein two parallel and spaced sliding rods 1101 are set on the installation frame 111, and the opposite ends of each installation strip 1111 are respectively sleeved on the sliding rod 1101 through corresponding sleeve holes to realize the installation of the installation strip 1111, wherein multiple installation strips 1111 can be set on each installation frame 111.

[0040] The width of the middle area of ​​the mounting strip 1111 is set to be smaller than the widths of the opposite ends thereof.

[0041] The mounting bar 1111 is a flexible member, and the through hole is provided in the middle area of ​​the mounting bar 1111 .

[0042] Furthermore, in this embodiment, a plurality of warp displacement components 110 are arranged at equal intervals along the transmission direction of the warp; and the arrangement heights of the plurality of warp displacement components 110 along the transmission direction of the warp gradually decrease.

[0043] Specifically, the size of the mounting frame 111 in each warp displacement assembly 110 is the same, and the height position of each corresponding mounting bar 1111 relative to the mounting frame 111 is also the same.

[0044] Therefore, the multiple warp displacement components 110 described in this embodiment are gradually lowered in height along the transmission direction of the warp, specifically, the multiple installation frames 111 are gradually lowered in height, that is, the height of the wire passages 101 in the multiple installation frames 111 along the transmission direction of the warp is gradually lowered. As a result, some warp can be arranged obliquely downward toward the braiding convergence point, and some warp can be arranged obliquely upward toward the braiding convergence point, thereby improving the tightness of the braided wire combination.

[0045] Optionally, each warp displacement assembly 110 further includes a mounting rod 113 and a mounting frame 114, one end of the mounting rod 113 is mounted on the mounting frame 114, and the main body 1121 of the driving member 112 is fixedly mounted on the other end of the mounting rod 113; the piston rod 1122 of the driving member 1121 is connected to the mounting frame 111.

[0046] In an optional embodiment, the installation rod 113 is configured to be retractable so as to adjust the initial installation height of the driving member 112 .

[0047] Optionally, one end of the mounting rod 113 is movably connected to the mounting frame 114 via a fisheye bearing, so that when the driving member 112 drives the mounting frame 111 to move up and down, a small local displacement can be performed, thereby avoiding the problem of the mounting frame 111 being stuck due to position deviation as a whole.

[0048] In one embodiment, the mounting rod 113 may be a telescopic piston rod.

[0049] Alternatively, in some other embodiments, mounting rods 113 of different lengths may be used to connect the driving members 112 respectively, so that the initial installation heights of the multiple driving members 112 and the corresponding mounting frames 111 can be sequentially lowered. By using mounting rods 113 of different lengths, the installation height of the mounting frame 111 can be adjusted.

[0050] Please read further Figure 1 .

[0051] In this embodiment, the warp transmission mechanism 10 also includes a guide rail assembly, which includes two guide members 121 that are opposite to and spaced apart from each other. The two guide members 121 are each provided with guide grooves 1211 facing each other, and the opposite sides of each mounting frame 111 are respectively accommodated in the guide grooves 1211 of the two guide members.

[0052] Furthermore, based on the same inventive concept, the present application also provides a tubular braiding device.

[0053] See also Figure 3-Figure 6 . Figure 3 It is a structural schematic diagram of an embodiment of a tubular braiding device provided by the present application; Figure 4 yes Figure 3 A schematic diagram showing the direction of the warp threads in the tubular braiding device shown; Figure 5 yes Figure 3 A schematic diagram of a braiding shuttle assembly in the tubular braiding device shown; Figure 6 yes Figure 3 A schematic diagram of a swing-buckle assembly in a tubular braiding device is shown.

[0054] Among them, it should be noted that Figure 3 The tubular braiding apparatus is shown with portions of the side mounting brackets removed.

[0055] The tubular article braiding device 20 comprises an unwinding mechanism 210, a warp transmission mechanism 10 as described in the previous embodiment, a weft transmission mechanism 220 and a winding mechanism 230 which are arranged in sequence.

[0056] Among them, the unwinding mechanism 210 includes an unwinding roller 211, which is used to wind multiple warp threads. The multiple warp threads are released as the unwinding roller 211 rotates. Each end of the multiple warp threads passes through the warp transmission mechanism 10 and the weft transmission mechanism 220 and is then wound onto the winding mechanism 230.

[0057] There are multiple unwinding rollers 211 , and each unwinding roller 211 can be used to release the warp thread.

[0058] In an optional embodiment, the number of the unwinding rollers 211 is at least two, and one of the unwinding rollers 211 can form an inner layer of the tubular braid after braiding.

[0059] Each unwinding roller 211 is connected to a pressure sensor 212, wherein the pressure sensor 212 is used to detect the tension of the released warp. In this solution, for warps of different materials, by controlling their tension, weaving can be better performed.

[0060] The pressure sensor is used to detect the tension of the warp thread on the unwinding roller, and when it detects that the tension of the warp thread exceeds the set value, it sends a trigger signal to control the rotation of the unwinding roller to adjust the tension of the warp thread.

[0061] In this embodiment, the warp threads are controlled by the up and down misalignment of the warp thread transmission mechanism 10, so that at least two groups of threads can be formed, each of which has a plurality of warp threads arranged side by side. One group of threads A can move obliquely downward toward one side of the winding mechanism 230, and the other group of threads B can move obliquely upward toward one side of the winding mechanism 230.

[0062] By each installation frame 111 performing lifting and lowering motion according to a set period, each warp thread can be made to swing up and down according to its own period.

[0063] The weft transmission mechanism 220 is arranged on the warp transmission mechanism 10 away from the unwinding mechanism 210 , wherein the weft transmission mechanism 220 includes a weaving shuttle assembly 221 and a swing buckle assembly 222 .

[0064] Among them, the weaving shuttle assembly 221 includes a driving cylinder (not shown in the figure), a push rod 2212, and a weaving shuttle 2213, wherein the driving end of the driving cylinder is connected to one end of the push rod 2212, and the other end of the push rod 2212 is fixedly installed with the weaving shuttle 2213, wherein the driving cylinder can drive the push rod 2212 to drive the weaving shuttle 2213 to move back and forth in the direction of forming a line row perpendicular to the warp.

[0065] The weaving shuttle 2213 is disposed between two sets of wire arrangements, and is used to release the wefts, so that each warp can be woven into shape by swinging up and down according to its own cycle.

[0066] It should be noted that, in the present solution, a tubular braided fabric can be formed by weaving two sets of wires through continuous wefts in a reciprocating motion.

[0067] The swing buckle assembly 222 includes a grid 2221 and a grid driving device 2222. The grid 2221 has a plurality of long strip grooves arranged at intervals, and each of the long strip grooves can allow at least one warp thread to pass through.

[0068] The grid driving device 2222 is used to drive the grid 2221 to move toward or away from the weaving point M of the warp box weft. The grid driving device 2222 drives the grid 2221 to press the weft against the warp, thereby improving the sealing of the formed tubular braid.

[0069] Furthermore, the braided tubular braid can be wound around the winding mechanism 230 for recycling and storage.

[0070] In summary, the present application provides a tubular braiding device and a warp transmission mechanism thereof. In the scheme of the present application, a plurality of warps are respectively arranged through a plurality of warp displacement assemblies arranged at intervals, and then by adjusting the initial height of the wire passage in each warp displacement assembly respectively, it is possible to divide a plurality of groups of warps into two layers, upper and lower, and alternately swing up and down, and then by using continuous wefts to weave the intersection of the upper and lower layers of warps, a tubular braid can be formed. Furthermore, by adjusting the initial height of the wire passage in each warp displacement assembly respectively, it is possible to ensure that the amplitude of each warp when swinging up and down alternately is as small as possible, so that the tension of the warp is stable during the braiding process, and the impermeability of the tubular braid can be improved. In addition, by providing a plurality of mounting frames that can independently perform lifting movements, and by setting a specific lifting cycle for each mounting frame, the formed tubular braid can have a preset pattern.

[0071] The above embodiments are merely illustrative of the present invention, and are not exhaustive embodiments. The present invention may also be implemented in other specific ways or other specific forms without departing from the gist or essential features of the present invention. Therefore, the described embodiments should be considered illustrative rather than restrictive in any respect. The scope of the present invention should be described by the appended claims, and any changes equivalent to the intent and scope of the claims should also be included within the scope of the present invention.

Claims

1. A warp transmission mechanism for a tubular article weaving device, characterized in that: The warp transmission mechanism comprises: A plurality of warp displacement assemblies arranged at intervals, each of the warp displacement assemblies comprising a mounting frame and a driving member connected to the mounting frame, the driving member being used to drive the mounting frame to perform lifting motion; Wherein, the installation frame is provided with a wire passing channel, each of the wire passing channels is configured to allow a warp thread to pass through, and the warp threads are swung up and down by driving different warp thread displacement components to perform lifting and lowering movements.

2. The warp transmission mechanism according to claim 1, characterized in that: A plurality of mounting bars are arranged on each of the mounting frames, and each of the mounting bars is provided with a through hole, and the through hole is used to form the wire passage.

3. The warp transmission mechanism according to claim 2, characterized in that: The installation frame has two parallel and spaced sliding rods, and opposite ends of each installation strip are respectively sleeved and slidably arranged on the two sliding rods.

4. The warp transmission mechanism according to claim 3, characterized in that: The mounting bar is a flexible member, and the through hole is opened in the middle area of ​​the mounting bar.

5. The warp transmission mechanism according to claim 3, characterized in that: A plurality of the warp displacement components are arranged at equal intervals along the transmission direction of the warp.

6. The warp transmission mechanism according to claim 3, characterized in that: The initial installation heights of the plurality of installation frames gradually decrease along the transmission direction of the warp.

7. The warp transmission mechanism according to claim 6, characterized in that: Each of the warp displacement assemblies further comprises a mounting rod and a mounting frame, one end of the mounting rod is mounted on the mounting frame, and the main body of the driving member is fixedly mounted on the other end of the mounting rod; the piston rod of the driving member is connected to the mounting frame; The installation rod is configured to be retractable so as to adjust the initial installation height of the driving member.

8. The warp transmission mechanism according to claim 7, characterized in that: One end of the mounting rod is movably connected to the mounting frame via a fisheye bearing.

9. The warp transmission mechanism according to claim 2, characterized in that: The warp transmission mechanism also includes a guide rail assembly, which includes two guide members that are arranged opposite to each other and at a distance. The two guide members are respectively provided with guide grooves facing each other, and the opposite sides of each mounting frame are respectively accommodated in the guide grooves of the two guide members.

10. A tubular braiding device, characterized in that: The tubular article braiding device comprises: An unwinding mechanism, a warp transmission mechanism, a weft transmission mechanism and a winding mechanism as described in any one of claims 1 to 9 are arranged in sequence; The unwinding mechanism comprises an unwinding roller, the unwinding roller is used to wind a plurality of warps, the plurality of warps are released as the unwinding roller rotates, and one end of each of the plurality of warps passes through the warp transmission mechanism and the weft transmission mechanism and then is wound to the winding mechanism; Wherein, the unwinding roller is connected to a pressure sensor, which is used to detect whether the unwinding roller has adjusted the tension of the warp. When it is detected that the tension of the warp exceeds a set value, a trigger signal is sent to control the rotation of the unwinding roller to adjust the tension of the warp.

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