Leno heald jacquard

Abstract

The utility model relates to the technical field of jacquard machines, in particular to a leno heald jacquard machine which comprises a rack and a power mechanism arranged on the rack, a main leno heald small shed wheel, a main leno heald large shed wheel and an auxiliary leno heald small shed wheel are arranged on the rack, an auxiliary leno heald large shed wheel is arranged on the rack, the main leno heald small shed wheel is synchronous with the main leno heald large shed wheel, and the main leno heald large shed wheel is synchronous with the auxiliary leno heald small shed wheel. The auxiliary doup small shed wheel and the auxiliary doup large shed wheel are synchronous, and a deflection angle a is formed between the main doup large shed wheel and the auxiliary doup small shed wheel. According to the leno heald jacquard machine disclosed by the utility model, through the design of the deflection angle formed between the large shed wheel of the main leno heald and the small shed wheel of the auxiliary leno heald, when the main leno heald lifts yarns to the highest point or the lowest point during jacquard, the auxiliary leno heald does not lift the yarns to the lowest point or the highest point correspondingly; therefore, the front-and-back fall of the yarns can be reduced, the tension of the yarns is reduced, and the weaving speed, the product quality and the qualified rate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of jacquard machines, in particular to a leash jacquard machine. Background Art

[0002] Hangzhou Luo is a twisted heald fabric. Due to its complex process, it has long been difficult to complete batch production of Luo with high speed, high efficiency, high quality and stability. The existing Luo produced in the market mainly uses mechanical jacquard machines and wooden shuttle looms, which have low production speeds, complex pattern switching cycles, high defective rates and serious material waste.

[0003] At present, for the front and rear double-opening jacquard mechanism for producing twill fabrics, due to the large size of the main twill steel healds, the length is relatively large after arrangement, and the arrangement of the auxiliary twill steel healds in the rear row makes it possible to have a large gap between the main twill steel healds and the auxiliary twill steel healds while ensuring a certain opening size. Therefore, the tension on the yarn is high during the jacquard process, and the yarn is prone to breakage, resulting in defective twill fabrics. This is especially true for twill fabrics made of silk, which have low silk thread strength and a very high defective rate.

[0004] In order to relieve the tension of warp yarn and increase the weaving speed, traditional processes have adopted fixed pressure rollers, elastic pressure rollers, double warp beams, independent warp beam frames and other methods. The construction is complicated, the site area is wasted, and the effect on improving efficiency is minimal. The industry needs a mechanical mechanism specifically designed for the special process of twisting to solve the various problems mentioned above, so as to increase the speed of twisting jacquard weaving and improve the qualified rate of twisting. Utility Model Content

[0005] In order to solve the above technical deficiencies, the utility model provides a twisted heald jacquard machine, which can reduce the yarn tension during the jacquard process to reduce yarn breakage and improve the finished product rate of twisted heald fabrics.

[0006] The utility model discloses a leash jacquard machine, comprising a frame and a power mechanism arranged on the frame, wherein a main leash small shed wheel, a main leash large shed wheel, an auxiliary leash small shed wheel, and an auxiliary leash large shed wheel are arranged on the frame, and the power mechanism drives the main leash small shed wheel, the main leash large shed wheel, the auxiliary leash small shed wheel, and the auxiliary leash large shed wheel to rotate, and a main leash small shed wheel, a main leash large shed wheel, an auxiliary leash small shed wheel, and an auxiliary leash large shed wheel are arranged on the main leash small shed wheel, the main leash large shed wheel, the auxiliary leash small shed wheel, and the auxiliary leash large shed wheel. The corresponding lifting knives are provided with a needle selection assembly on the frame. The corresponding lifting knives of the main heald small shed wheel and the main heald large shed wheel are connected to the corresponding needle selection assembly through the main heald, and the corresponding lifting knives of the auxiliary heald small shed wheel and the auxiliary heald large shed wheel are connected to the corresponding needle selection assembly through the auxiliary heald; the main heald small shed wheel and the main heald large shed wheel are synchronized, and the auxiliary heald small shed wheel and the auxiliary heald large shed wheel are synchronized, and an angle a is formed between the main heald large shed wheel and the auxiliary heald small shed wheel.

[0007] Among them, the power mechanism, the main heald small shed wheel, the main heald large shed wheel, the auxiliary heald small shed wheel, the auxiliary heald large shed wheel and their corresponding knife lifting and needle selection components are all known structures, and the specific structures will not be repeated.

[0008] The deflection angle a is between 0° and 90°.

[0009] The main heald small shed wheel, the main heald large shed wheel, the auxiliary heald small shed wheel and the auxiliary heald large shed wheel are driven by one or more power mechanisms.

[0010] The main heald small shed wheel, the main heald large shed wheel, the auxiliary heald small shed wheel and the auxiliary heald large shed wheel are one of gears, sprockets, cams and eccentric wheels.

[0011] The utility model provides a twill jacquard machine, through the design of the deflection angle formed between the main twill large shed wheel and the auxiliary twill small shed wheel. When jacquard is being made, when the main twill lifts the yarn to the highest point or the lowest point, the corresponding auxiliary twill does not lift the yarn to the lowest point or the highest point, thereby reducing the front-to-back drop of the yarn, reducing the tension of the yarn, improving the weaving speed and product quality and the qualified rate, solving the problem of warp yarn breakage caused by excessive tension due to large warp opening in the traditional lehenga weaving process, especially solving the problem that the silk warp yarn is too thin during processing, the warp is easily broken when the loom speed is high and the opening is large, and the problem that the speed is low and the product quality is poor.

[0012] The utility model relates to a twisted heald jacquard, and the healds used are different from ordinary jacquard healds. Ordinary jacquard healds are very small and close to the shape of a steel wire, while the twisted heald jacquard healds have left and right pushing heald pieces and an intermediate heald piece in the middle, and the overall volume is very large, so that the same number of twisted healds are arranged over a long length in the warp direction. The longer the warp arrangement is, the greater the up and down stroke of the farthest heald is, and the opening must be very large, because the warp direction needs to form an oblique opening to be the clearest. The utility model minimizes the problem of breakage of the warp caused by excessive tension of the maximum opening while maintaining a certain clarity of the opening, and ultimately realizes high-speed and stable weaving of silk lehenga. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0014] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0015] Example 1:

[0016] like Figure 1 As shown, the utility model discloses a leash jacquard machine, including a frame 1 and a power mechanism 2 arranged on the frame 1, on which a main leash small shed wheel 3, a main leash large shed wheel 4, an auxiliary leash small shed wheel 5, and an auxiliary leash large shed wheel 6 are arranged. The power mechanism 2 drives the main leash small shed wheel 3, the main leash large shed wheel 4, the auxiliary leash small shed wheel 5, and the auxiliary leash large shed wheel 6 to rotate. A corresponding lifting knife 7 is provided, and a needle selection assembly 8 is provided on the frame 1. The corresponding lifting knife 7 of the main heald small shed wheel 3 and the main heald large shed wheel 4 is connected to the corresponding needle selection assembly 8 through the main heald, and the corresponding lifting knife 7 of the auxiliary heald small shed wheel 5 and the auxiliary heald large shed wheel 6 is connected to the corresponding needle selection assembly 8 through the auxiliary heald; the main heald small shed wheel 3 and the main heald large shed wheel 4 are synchronized, and the auxiliary heald small shed wheel 5 and the auxiliary heald large shed wheel 6 are synchronized, and an angle a is formed between the main heald large shed wheel 4 and the auxiliary heald small shed wheel 5.

[0017] Among them, the power mechanism 2, the main heald small shed wheel 3, the main heald large shed wheel 4, the auxiliary heald small shed wheel 5, the auxiliary heald large shed wheel 6 and its corresponding knife lifting 7, needle selection assembly 8 and other structures are all known structures, and the specific structures will not be repeated.

[0018] The main heddle large shed wheel 4 and the main heddle small shed wheel 3 drive the knife lifter 7 and the corresponding needle selection assembly 8 to move, while the auxiliary heddle large shed wheel 6 and the auxiliary heddle small shed wheel 5 drive the knife lifter 7 and the corresponding needle selection assembly 8 to move. Due to the setting of the opening angle, the auxiliary heddle arranged at the back has a large movement amplitude. When jacquard weaving, when the main heddle drives the yarn to the highest point or the lowest point, there is a situation where the auxiliary heddle drives the corresponding yarn to the lowest point or the highest point, which causes a large drop in the yarn. Therefore, the yarn is prone to breakage during jacquard weaving, especially when the weaving speed is fast. In this solution, an angle a is formed between the small shed wheel 3 of the main twirl heald and the large shed wheel 6 of the auxiliary twirl heald. This angle a can ensure that when the main twirl heald is at the highest point or the lowest point, the auxiliary twirl heald is not at the highest point or the lowest point. This can reduce the difference between the yarn corresponding to the main twirl heald and the yarn corresponding to the auxiliary twirl heald, reduce the tension on the yarn, and make the yarn less likely to break during the weaving process. The weaving speed of the jacquard machine can be improved, the weaving efficiency is high, and the yield rate of twirl heald fabrics is high.

[0019] The angle of the deflection angle a is between 0-90°. Preferably, the angle of the deflection angle a can be between 20-30°, such as 25°, 28° and other arbitrary values, which can be selected and adjusted according to actual needs.

[0020] like Figure 1As shown, the front-to-back spacing of the main healds of the jacquard machine after arrangement is L1, and the front-to-back spacing of the auxiliary healds after arrangement is L2. Under a certain opening state, in the case of existing equipment, the spacing between the highest point and the lowest point of the front end of the main heald is H1, and the spacing between the highest point and the lowest point of the rear end of the main heald is H2. At the same time, the spacing between the highest point and the lowest point of the front end of the auxiliary heald is H5, and the spacing between the highest point and the lowest point of the rear end of the auxiliary heald is H6. In this embodiment, by adjusting the auxiliary heald large shed wheel 6 and the auxiliary heald small shed wheel 5 to a certain angle, there is an angle a between the main heald large shed wheel 4 and the main heald small shed wheel 3. In this way, during normal jacquard, the height position of the main heald remains unchanged, and when the main heald is at the highest point or the lowest point, the height difference of the front end of the auxiliary heald is only H3, and the height difference of the rear end of the auxiliary heald is only H4. By Figure 1 As can be seen, H3 < H5, and H4 < H6. This effectively reduces the maximum drop between the auxiliary heddle yarn and the main heddle yarn during the jacquard weaving process, thereby reducing the tension on the yarn. Reduced tension during the jacquard weaving process improves loom efficiency and reduces yarn breakage, thereby ensuring the yield rate of the heddle fabric. This is particularly true for silk weaving, resulting in a high yield rate and high speed.

[0021] The main heald small shed wheel 3, the main heald large shed wheel 4, the auxiliary heald small shed wheel 5, and the auxiliary heald large shed wheel 6 are driven by one or more power mechanisms 2.

[0022] Under normal circumstances, there is one power mechanism 2, which drives all the main heald small shed wheels 3, the main heald large shed wheel 4, the auxiliary heald small shed wheel 5, and the auxiliary heald large shed wheel 6. During the adjustment process, it is only necessary to form an angle a between the auxiliary heald small shed wheel 5, the auxiliary heald large shed wheel 6 and the main heald large shed wheel 4 and the main heald large shed wheel 4. Of course, multiple power mechanisms 2 can also be selected according to actual needs, such as two power mechanisms 2, one of which drives the main heald large shed wheel 4 and the main heald small shed wheel 3, and the other power mechanism 2 drives the auxiliary heald large shed wheel 6 and the auxiliary heald small shed wheel 5.

[0023] The main heald small shed wheel 3, the main heald large shed wheel 4, the auxiliary heald small shed wheel 5, and the auxiliary heald large shed wheel 6 are one of gears, sprockets, cams, and eccentric wheels.

[0024] In this embodiment, if Figure 1As shown, the main leash small shed wheel 3, the main leash large shed wheel 4, the auxiliary leash small shed wheel 5, and the auxiliary leash large shed wheel 6 are gears, and the output gear on a power mechanism 2 drives all the gears to rotate, and the corresponding lifting knife 7 is eccentrically arranged on the gear. Of course, using gears as the main leash small shed wheel 3, the main leash large shed wheel 4, the auxiliary leash small shed wheel 5, and the auxiliary leash large shed wheel 6 is a technology that has been used in this field.

[0025] In other embodiments, the main heddle small shed wheel 3, the main heddle large shed wheel 4, the auxiliary heddle small shed wheel 5, and the auxiliary heddle large shed wheel 6 are sprockets, and the sprockets are provided on the output shaft of the power mechanism 2, and the transmission is achieved via a chain. A cam or eccentric wheel mechanism can also be used. These various structures have been used in the art as the main heddle small shed wheel 3, the main heddle large shed wheel 4, the auxiliary heddle small shed wheel 5, and the auxiliary heddle large shed wheel 6. The specific structural forms are not described in detail here.

[0026] 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" 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot 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 one or more of the features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to the interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simplified modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention. For example, the gear is changed to a chain-driven double-opening front and rear transmission with a delayed angle or an advanced angle action: two parallel jacquard machines (sprocket, cam or eccentric wheel mechanism), and the front and rear jacquard machine openings are set to the delayed angle or advanced angle action of the highest front and rear openings.

Claims

1. A hank jacquard machine, comprising a frame and a power mechanism arranged on the frame, characterized in that: The frame is provided with a main heald small shed wheel, a main heald large shed wheel, an auxiliary heald small shed wheel, and an auxiliary heald large shed wheel, the power mechanism drives the main heald small shed wheel, the main heald large shed wheel, the auxiliary heald small shed wheel, and the auxiliary heald large shed wheel to rotate, and corresponding knives are arranged on the main heald small shed wheel, the main heald large shed wheel, the auxiliary heald small shed wheel, and the auxiliary heald large shed wheel, and a needle selection assembly is arranged on the frame, the corresponding knives of the main heald small shed wheel and the main heald large shed wheel are connected with the corresponding needle selection assembly through the main heald, and the corresponding knives of the auxiliary heald small shed wheel and the auxiliary heald large shed wheel are connected with the corresponding needle selection assembly through the auxiliary heald; the main heald small shed wheel is synchronized with the main heald large shed wheel, the auxiliary heald small shed wheel is synchronized with the auxiliary heald large shed wheel, and a deflection angle a is formed between the main heald large shed wheel and the auxiliary heald small shed wheel.

2. A hank heald jacquard machine according to claim 1, characterized in that: The deflection angle a is between 0° and 90°.

3. A leash jacquard machine according to claim 1, characterized in that: The main heald small shed wheel, the main heald large shed wheel, the auxiliary heald small shed wheel and the auxiliary heald large shed wheel are driven by one or more power mechanisms.

4. A leash jacquard machine according to claim 3, characterized in that: The main heald small shed wheel, the main heald large shed wheel, the auxiliary heald small shed wheel and the auxiliary heald large shed wheel are one of gears, sprockets, cams and eccentric wheels.

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