Jacquard doup heald
By optimizing the heddle structure, reducing the number of bottom elastic elements, and adopting a closed lead sheet and guide design, the motion interference problem caused by the dense heddle structure in traditional methods has been solved, thus improving the stability and failure rate of the heddle weaving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional jacquard heddle structures are dense and complex, leading to frequent motion interference, which affects the formation of fabric patterns and results in a high failure rate.
The stranded helium structure is optimized, the number of bottom elastic elements is reduced, and a closed lead sheet design and guide are adopted. The lead sheet is made stable to slide through the sliding hole and guide, thereby reducing the density of the stranded helium structure.
The failure frequency of the heddle structure was reduced, the motion stability and weaving effect were improved, and a more stable weaving pattern was formed.
Smart Images
Figure CN224077643U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a jacquard machine structure, and more specifically, to a jacquard heddle. Background Technology
[0002] Jacquard heddles are the core structure of a jacquard machine for creating complex patterns. Traditional heddle mechanisms control the rise and fall of warp yarns through heddles, creating openings in the fabric structure that allow weft yarns to weave according to a pre-set pattern. In a jacquard machine, hundreds or even thousands of heddles are densely packed together, making them prone to interference. Furthermore, the guide pins on traditional heddles are typically A-shaped or inverted U-shaped, requiring two springs to be connected to the bottom of the guide pins. This further increases the density of the heddle mechanism, making it susceptible to interference during vertical movement and preventing the heddles from completing the fabric pattern.
[0003] For example, Chinese Patent Publication No. CN116065284A, published on May 5, 2023, describes a novel heddle structure for a woven jacquard machine. The structure includes a heddle body, a left heddle, and a right heddle. The upper center of the heddle body has an upper eyelet through which warp yarns can pass. The left heddle has a left arc-shaped end face at its contact point with the upper end of the heddle body, and the right heddle has a right arc-shaped end face at its contact point with the upper end of the heddle body. The left and right heddles can move vertically relative to the heddle body under the control of the woven jacquard machine. This vertical movement allows at least one strand of yarn to be wound around the heddle body, forming a heddle unit. Breathable areas are naturally formed between these units. However, in this design, the heddle body is inverted U-shaped with two fixed ends at the bottom. Both fixed ends require connection to an elastic fixing structure, which undoubtedly increases the density of the structure below the heddle, significantly affecting its movement and leading to a higher frequency of malfunctions. Utility Model Content
[0004] This invention overcomes the problem of the dense and complex structure of existing jacquard heddles and provides a jacquard heddle. This solution optimizes the heddle structure, reduces the number of vertical elastic elements at the bottom of the heddle structure, and reduces its density, thereby reducing the frequency of jacquard machine malfunctions.
[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a jacquard heddle, including a lead wire piece and a heddle-lifting assembly. One end of the lead wire piece has a lead wire hole, and the other end has a first connecting portion. An elongated oval sliding hole along the length of the heddle is provided between the lead wire hole and the first connecting portion. The heddle-lifting assembly is slidably connected within the sliding hole. The lead wire hole at the top of the lead wire piece controls the up-and-down movement of the warp yarns. The first connecting portion at the bottom of the lead wire piece connects to a reset component. The sliding hole allows the lead wire piece to slide on the heddle-lifting assembly, providing guidance and limiting for the lead wire piece. This solution designs the bottom of the lead wire piece in the heddle structure as a closed structure. Only one set of elastic structures needs to be connected to the bottom of the lead wire piece to achieve stable reset, thereby greatly reducing the density of elastic components at the bottom of the heddle structure and reducing the failure frequency during heddle operation.
[0006] Preferably, the heald assembly includes a first heald and a second heald. The first and second heals are respectively provided with a first recess and a second recess, with the first and second recesses facing inwards. Each of the first and second recesses is provided with a guide located within the sliding hole. The first and second recesses improve the movement of the first and second heals within the guide hole. Combined with the guide, they prevent severe deflection of the recesses in the first and second heals. Simultaneously, the fixed portions of the first and second recesses also have a guiding effect on the warp yarns, thereby achieving left and right twisting of the warp yarns.
[0007] Preferably, the first and second recessed portions are arranged close together and within the width of the sliding hole, while the first and second lifting heddles are spaced apart on the side facing the first connecting portion and outside the width of the sliding hole. The overall width of the first and second recessed portions is smaller than the width of the sliding hole, ensuring good vertical movement of the first and second lifting heddles. The distance between the bottoms of the first and second lifting heddles is greater than the width of the sliding hole, thus limiting the deflection of the first and second lifting heddles by the outer diameter of the limiting piece, ensuring the effective vertical movement of the first and second lifting heddles.
[0008] Preferably, the first and second heddles are each provided with a second connecting portion near the first connecting portion, and both the first and second connecting portions are connected to a reset assembly. The first connecting portion is used to connect the lead sheet to the reset assembly at the bottom, and the second connecting portion is used to connect the first and second heddles to the reset assembly at the bottom. Through the reset assembly, the downward movement and reset operation of the lead sheet, the first heddle, and the second heddle can be realized.
[0009] Preferably, the reset assembly includes an elastic element. One end of the elastic element is provided with a first connector that connects to the first connecting portion or the second connecting portion, and the other end of the elastic element is provided with a second connector. The second connector is also connected to a fixing device. The elastic element can generate elastic force to achieve the reset effect of the lead wire piece, the first heddle, and the second heddle. The first connector is used to connect the lead wire piece and the elastic element, or to connect the heddle assembly and the elastic element. The second connector is used to connect the elastic element and the bottom fixing structure, so as to provide tension for the reset of the heddle assembly and the lead wire piece.
[0010] Preferably, the first and second connecting members are rods, and the elastic element is a circular spring. The first and second connecting members are located inside the elastic element. The design of the first and second connecting members as rods, inserted into the elastic element, can provide axial restraint to a certain extent; it also reduces the area in the middle of the elastic element containing only the spring, thereby reducing the swing amplitude of the elastic element during the operation of the jacquard machine and preventing interference between the elastic elements.
[0011] Preferably, the portions of the first and second connectors located inside the elastic member are wavy. The wavy design of the first and second connectors allows for better adjustment of the axial direction of the elastic member, and also facilitates the relative movement of the first and second connectors and the elastic member during expansion and contraction, preventing the first and second connectors from extending outside the elastic member.
[0012] Preferably, the first and second heddles are provided with a third connecting portion on the side near the lead hole, and the third connecting portion is connected to a jacquard head. The third connecting portion is used to connect the heddle assembly and the jacquard head, so that the heddle assembly can move up and down.
[0013] Preferably, both the first and second heddle lifters include heddle lifting bodies located on both sides of the lead sheet, and the heddle lifting bodies on both sides are fixedly connected by the guide member. Both the first and second heddle lifters consist of two heddle lifting bodies, which are arranged overlappingly on both sides of the lead sheet. This not only ensures the vertical sliding effect of the lead sheet but also provides good positioning for the lead sheet and the heddle lifting assembly.
[0014] Preferably, the lead sheet is clearance-fitted with the heddle-lifting bodies on both sides. This clearance fit between the heddle-lifting bodies and the lead sheet ensures that the lead sheet and the first and second heddles can slide vertically.
[0015] Compared with the prior art, the beneficial effects of this utility model are: (1) the heddle structure is optimized, the number of vertical elastic elements at the bottom of the heddle structure is reduced, and its density is reduced, thereby reducing the frequency of jacquard machine malfunctions; (2) the up and down movement of the heddle assembly is more stable, which can better realize jacquard weaving. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the lead sheet of this utility model.
[0018] Figure 3 This is a schematic diagram showing the assembly of the lead sheet and the heddle assembly of this utility model.
[0019] Figure 4 A side view of the assembly and lead sheet.
[0020] Figure 5 for Figure 1 An enlarged diagram of A in the diagram.
[0021] Figure 6 Bit Figure 1 Enlarged diagram of B in the diagram.
[0022] In the diagram: 1. Lead wire piece, 2. Lead wire hole, 3. First connecting part, 4. Sliding hole, 5. First heddle, 6. Second heddle, 7. First concave part, 8. Second concave part, 9. Guide member, 10. Second connecting part, 11. Elastic member, 12. First connecting member, 13. Second connecting member, 14. Third connecting part, 15. Heddle body, 16. First upper bevel, 17. Second upper bevel, 18. First lower bevel, 19. Second lower bevel, 20. Guide opening, 21. Tail heddle, 22. Hook. Detailed Implementation
[0023] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.
[0024] Example 1: As Figures 1 to 4The jacquard heddle assembly shown includes a guide piece 1 and a heddle assembly. The guide piece 1 is an elliptical or oblong thin sheet structure. The upper end of the guide piece 1 is designed with a guide hole 2 for threading warp yarns. The lower end of the guide piece 1 is designed with a first connecting part 3. The length direction of the guide piece 1 is arranged vertically. An oblong through sliding hole 4 is also provided on the guide piece 1 along its length direction. The heddle assembly includes a first heddle 5 and a second heddle 6. The first heddle 5 and the second heddle 6 have the same structure and are symmetrically arranged on the guide piece 1. The first heddle 5 and the second heddle 6 can slide vertically on the sliding hole 4 of the guide piece 1. Through the vertical movement of the first heddle 5 and the second heddle 6 on the guide piece 1, the warp yarns on the guide piece 1 can be raised or lowered, thereby forming a shed between the warp yarns for the weft yarns to pass through, realizing the jacquard weaving pattern.
[0025] Furthermore, the first heddle 5 and the first heddle 6 are both slender rod structures. The first heddle 5 is provided with a first concave portion 7, which is located near the middle of the first heddle 5. The second heddle 6 includes a second concave portion 8, which is located near the middle of the second heddle 6. The first concave portion 7 and the second concave portion 8 slide in the sliding hole 4 of the lead wire piece 1. The first concave portion 7 protrudes towards the location of the sliding hole 4 of the lead wire piece 1, and the second concave portion 8 protrudes towards the location of the sliding hole 4 of the lead wire piece 1. Thus, the first concave portion 7 and the second concave portion 8 are arranged opposite to the location of the sliding hole 4 of the lead wire piece 1. Both the first concave portion 7 and the second concave portion 8 are provided with guide members 9, which are located in the sliding hole 4 and can slide in the sliding hole 4, thereby enabling the first heddle 5 and the second heddle 6 to move up and down relative to the lead wire piece 1.
[0026] The first concave portion 7 and the upper section of the first helium 5 form a first upward bevel 16, and the second concave portion 8 and the upper section of the second helium 6 form a second upward bevel 17. The first upward bevel 16 and the second upward bevel 17 extend outward toward the first helium 5 and the second helium 6, making the distance between the upper section of the first helium 5 and the upper section of the second helium 6 greater than the width of the lead piece 1. Thus, when the lead piece 1 moves up and down, the top of the lead piece 1 will move up and down in the middle of the upper section of the first helium 5 and the upper section of the second helium 6, thereby avoiding interference between the first helium 5 and the second helium 6 and the movement of the lead piece 1. Similarly, the lower section of the first concave portion 7 and the first heddle 5 forms a first downward bevel 18, and the lower section of the second concave portion 8 and the second heddle 6 forms a second downward bevel 19. The first downward bevel 18 and the second downward bevel 19 extend outward toward the first heddle 5 and the second heddle 6, making the distance between the lower section of the first heddle 5 and the lower section of the second heddle 6 greater than the width of the lead piece 1. Thus, when the lead piece 1 moves up and down, the bottom of the lead piece 1 will move up and down in the middle of the lower section of the first heddle 5 and the lower section of the second heddle 6, thereby avoiding interference between the first heddle 5 and the second heddle 6 and the movement of the lead piece 1.
[0027] The top of the lead sheet 1 has an arc-shaped structure. Therefore, when the lead sheet 1 moves upward, a guide opening 20 is formed between the top of the lead sheet 1 and the first upward sloping opening 16, and between the top of the lead sheet 1 and the second upward sloping opening 17. During normal operation, warp yarns are threaded both inside and outside the lead hole 2. The warp yarns inside the lead hole 2 are lifted when the first heald 5 or the second heald 6 is lifted. The warp yarns outside the lead hole 2 are guided to the guide opening 20 by the first upward sloping opening 16 of the first heald 5 or the second upward sloping opening 17 of the second heald 7, and thus remain in the flat heald position. In this way, the warp yarns inside and outside the lead hole 2 can create a height difference, thereby forming a shed for the weft yarn to pass through.
[0028] Furthermore, such as Figure 3As shown, when the first heald 5 on the left is lifted upward, the first upward slant opening 16 moves upward along with the first heald 5. The intersection of the arc-shaped surface at the top of the lead thread piece 1 and the first upward slant opening 16 rises from the left along the arc-shaped surface to the top. That is to say, the guide opening 20 on the side of the top of the lead thread piece 1 close to the first heald 5 will gradually decrease. If the weft yarn is at the guide opening position on this side, it will be pushed by the slant of the first upward slant opening 16 to the position close to the guide opening 20 formed by the second heald 6 and the arc-shaped surface. At this time, the warp yarn in the lead thread hole 1 is located on the left, and the lead thread hole 2 on the lead thread piece 1 is lifted along with the first heald 5. The warp yarn in the lead thread hole 2 is located at the top, while the warp yarn outside the lead thread hole 2 is located at the right flat heald position. The height difference between the warp yarn inside the lead thread hole 2 and the warp yarn outside the lead thread hole 2 forms a left twisted shed opening. When the weft yarn is inserted, a left twisted pattern is formed. Similarly, when the second heald 6 on the right is lifted upward, the second upper slant opening 17 moves upward along with the second heald 6. The intersection of the arc surface at the top of the lead-in piece 1 and the second upper slant opening 16 rises from the right side along the arc surface to the top. That is to say, the guide opening 20 on the side of the top of the lead-in piece 1 close to the second heald 6 will gradually decrease. If the weft yarn is at the guide opening position on this side, it will be pushed by the slant of the second upper slant opening 17 to the position close to the guide opening 20 formed by the first heald 5 and the arc surface. At this time, the warp yarn in the lead-in hole 2 is located on the right side, and the warp yarn in the lead-in hole 2 on the lead-in piece 1 will be located at the top as the second heald 6 is lifted, while the warp yarn outside the lead-in hole 2 is located at the left flat heald position. The height difference between the warp yarn inside the lead-in hole 2 and the warp yarn outside the lead-in hole 2 forms a right-hand tuck opening, forming a right-hand tuck pattern.
[0029] It should be noted that in this embodiment, the first heddle 5 and the second heddle 6 are formed by two sets of identical thin-sheet heddle bodies 15 stacked together in parallel. That is, the first heddle 5 includes two parallel heddle bodies 15, and the second heddle 6 also includes two parallel heddle bodies 15. The heddle body 15 is a thin-sheet rod structure, and its overall shape is consistent with that of the first heddle 5 and the second heddle 6. Guide members 9 are provided on the first recess 7 and the second recess 8. The guide members 9 are made of plastic or metal sheet material and are fixed to the first recess 7 and the second recess 8. At the same time, the guide members 9 can connect the two parallel heddle bodies 15 on the first heddle 5 and the two parallel heddle bodies 15 on the second heddle 6. Specifically, the guide members 9 are sandwiched between the two parallel overlapping heddle bodies 15, and the guide members 9 fix the two parallel rods together by welding. This not only forms the first heddle 5, but also improves the structural strength of the first heddle 5. Similarly, the structure on the second heddle 6 is the same as the structure on the first heddle 5.
[0030] It is understandable that after the guide member 9 is fixed, gaps are formed in both the first helium 5 and the second helium 6 (that is, gaps between the two sets of parallel helium bodies 15 due to the presence of the guide member 9). The gap size should be greater than the thickness of the lead wire piece 1. In this way, the lead wire piece 1 and the first helium 5 and the second helium 6 can slide relative to each other. The guide member 9 can not only restrict the first helium 5 and the second helium 6 from disengaging from the sliding hole 4 of the lead wire piece 1 in the lateral direction, but also provide guidance for the movement of the first helium 5 and the second helium 6 relative to the lead wire piece 1 in the vertical direction, thereby improving the stability of the movement between the first helium 5, the second helium 6 and the lead wire piece 1.
[0031] A first connecting part 3 is provided at the bottom of the lead sheet 1, and a second connecting part 10 is provided at the bottom of the first helium 5 and the second helium 6. Reset components are provided on the first connecting part 3 and the second connecting part 10. Since the bottom of the lead sheet 1 is a closed structure, there is only one first connecting part 3. Both the first helium 5 and the second helium 6 have two second connecting parts 10 at their bottoms. Therefore, there are only three sets of reset components at the bottom of each stranded helium structure. Specifically, the reset assembly includes an elastic element 11, which is a tensile circular spring structure. During movement, the elastic element 11 generally only bears tensile force. The reset assembly is also arranged vertically. The first connecting part 3 is connected to the top of a set of first connecting members 12 and a set of elastic elements 11. The second connecting parts 10 of the first lifting helium 5 and the second lifting helium 6 are respectively connected to the top of a set of first connecting members 12 and a set of elastic elements 11. The first connecting members 12 are all rods. The connection between the first connecting member 12 and the first connecting part 3 and the second connecting part 10 is a hook 22 structure. Hook holes are provided on the first connecting part 3 and the second connecting part 10. The lead wire piece 1, the lifting helium assembly, and the reset assembly are connected together by a hook. To ensure the reliability of the hook, a heat-shrink tubing is fitted after the hook 22 and the hook hole are engaged to prevent the hook 22 from detaching from the hook hole. At the bottom of the elastic member 11, a fixing device is connected via a second connector 13. The fixing device is a fixed structure. Based on the fixing device, the lead wire piece 1 and the heddle assembly can be accurately reset via the reset assembly, which helps to improve positional accuracy. The second connector 13 is also a rod. The second connector 13 is located below the elastic member 11, so the top of the second connector 13 is connected to the elastic member 11.
[0032] It should also be noted that the top of the first connecting member 12 is fixed together with the elastic member 11 and the first connecting part 3 (second connecting part 10), while the bottom of the first connecting member 12 passes through the interior of the elastic member 11. When the elastic member 11 elastically expands or contracts, it moves on the first connecting member 12. This improves the axiality of the movement of the elastic member 11 and prevents it from swinging too much, thus avoiding interference and collision between different elastic members 11. The top of the second connecting member 13 also partially passes through the interior of the elastic member 11, which improves the axiality of the bottom of the elastic member 11. The first connecting member 12 and the second connecting member 13 can greatly improve the stability of the heddle structure's movement.
[0033] Furthermore, the main bodies of the first connector 12 and the second connector 13 are designed with continuous concave-convex structures to form a wave shape. The overall length of the wave shape on the first connector 12 and the second connector 13 is not less than 6 cm, and the length of the elastic member 11 in the normal state should be greater than the length of the first connector 12 and the second connector 13 inside the elastic member 11. This is to prevent the first connector 12 and the second connector 13 from colliding. The wave-shaped structure on the first connector 12 and the second connector 13 can further reduce the lateral swing of the elastic member 11, produce a certain damping effect, improve the smoothness of the movement of the reset assembly, and thus improve the smoothness of the movement of the heddle structure. The bottom of the second connector 13 is a plastic tail heddle 21, on which a connecting hole is provided for connecting a fixing device.
[0034] The tops of the first heddle 5 and the second heddle 6 are connected to a jacquard head (not shown in the figure). Specifically, the tops of the first heddle 5 and the second heddle 6 are provided with a third connecting part 14, which also has connecting holes. The jacquard head is suspended from the heddle by a threading rope and connected to the connecting holes on the third connecting part 14, thus connecting the entire heddle structure. The jacquard head is located on the top of the heddle assembly and is mainly used to store jacquard information and control the loom shedding movement to achieve automated weaving of complex patterns.
[0035] It should be noted that, due to the presence of the second connecting part 10 and the third connecting part 14, the upper and lower ends of the first heddle 5 and the second heddle 6 are closed. That is to say, the two ends of the two sets of parallel heddle bodies 15 are connected together respectively. There is a guide 9 in the middle position of the heddle body 15. Therefore, the gap between the two sets of parallel heddle bodies 15 gradually decreases from the middle to both sides, and can play a lateral limiting role for the lead wire piece 1, preventing the lead wire piece 1 from falling out of the gap to the outside of the heddle assembly.
Claims
1. A jacquard heddle, characterized in that, The device includes a lead wire piece and a heddle lifting assembly. One end of the lead wire piece is provided with a lead wire hole, and the other end of the lead wire piece is provided with a first connecting part. An elongated oval sliding hole along the length direction of the heddle is provided between the lead wire hole and the first connecting part, and the heddle lifting assembly is slidably connected in the sliding hole.
2. The jacquard heddle as described in claim 1, characterized in that, The lifting assembly includes a first lifting helium and a second lifting helium. The first lifting helium and the second lifting helium are respectively provided with a first concave portion and a second concave portion. The first concave portion and the second concave portion face the inner side of the first lifting helium and the second lifting helium. The first concave portion and the second concave portion are each provided with a guide member located in the sliding hole.
3. The jacquard heddle as described in claim 2, characterized in that, The first recess and the second recess are arranged close to each other and are located within the width dimension of the sliding hole. The first lifting helmet and the second lifting helmet are arranged at intervals toward the side of the first connecting portion and are located outside the width dimension of the sliding hole.
4. The jacquard heddle according to claim 2, characterized in that, The first and second lifting assemblies are respectively provided with second connecting parts on the side near the first connecting part, and both the first and second connecting parts are connected to a reset component.
5. A jacquard heddle as described in claim 4, characterized in that, The reset assembly includes an elastic element, one end of which is provided with a first connector that is connected to the first connecting portion or the second connecting portion, and the other end of which is provided with a second connector. The second connector is also connected to a fixing device.
6. The jacquard heddle according to claim 5, characterized in that, The first connecting member and the second connecting member are rods, and the elastic member is a circular spring. The first connecting member and the second connecting member are located inside the elastic member.
7. A jacquard heddle as described in claim 6, characterized in that, The portions of the first and second connectors located inside the elastic member are wavy.
8. A jacquard heddle according to any one of claims 4 to 7, characterized in that, The first and second heddles are provided with a third connecting part on the side near the lead hole, and the third connecting part is connected to a jacquard faucet.
9. A jacquard heddle according to any one of claims 2 to 7, characterized in that, Both the first and second heddle lifters include heddle lifters located on both sides of the lead sheet, and the heddle lifters on both sides are fixedly connected by the guide member.
10. A jacquard heddle as described in claim 9, characterized in that, The lead sheet is fitted with the heddle-lifting bodies on both sides with a clearance.