Improved jacquard leno heald mechanism

Abstract

The utility model relates to the technical field of jacquard leno healds, in particular to an improved jacquard leno heald mechanism, which comprises two first healds and a second heald, a connecting part is arranged in the middle of each first heald and is provided with a vertical guide channel, two sides of each second heald extend downwards to form a downward U-shaped structure, and each second heald is provided with a vertical guide channel. The lower ends of the two sides of the second heddle respectively penetrate through the guide channels of the first heddle, springs are arranged at the lower ends of the first heddle and the second heddle, the lower ends of the springs are connected with a tail heddle, and the thickness of the connecting part of the first heddle is greater than that of the first heddle above the connecting part. According to the improved jacquard doup mechanism provided by the utility model, the thickness of the first heald above the connecting part is reduced to be smaller than that of the connecting part, so that the deviation amplitude of yarns is relatively small in the use process, the pressure of the first heald acting on the yarns can be reduced, and the friction force between the first heald and the yarns is reduced; and the abrasion to the first heald is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of jacquard heddles, in particular to an improved jacquard heddle mechanism. Background Art

[0002] At present, the technology of roving heddles is basically mature, such as the chemical fiber heddle jacquard weaving technology for shoe upper heddles, etc. However, there are still problems with fine yarn jacquard heddles, such as heddle wear. Especially for raw silk of silk, its surface has sericin, and when friction is generated due to extrusion between the heddle and the heddle frame during heddling, it is extremely easy to cause heddle wear and affect the normal use of the equipment. Therefore, it is difficult to break through and develop the jacquard heddle technology for fine yarns such as silk, especially the high-speed jacquard heddle technology. Content of the Utility Model

[0003] The utility model provides an improved jacquard heddle mechanism to solve the above technical deficiencies, which can effectively reduce the pressure between the heddle frame and the yarn during heddling, thereby reducing the wear between the heddle frame and the yarn, and improving the service life of the heddle frame and the high-speed operation of the jacquard heddle.

[0004] The utility model discloses an improved jacquard heddle mechanism, which includes two first heddle frames and one second heddle frame. The middle part of the first heddle frame is a connecting part, and a vertical guiding channel is arranged in the connecting part. A yarn guiding hole is arranged at the top of the second heddle frame. The two sides of the second heddle frame extend downward to form a downward U-shaped structure. The lower ends of the two sides of the second heddle frame respectively pass through the guiding channels of one first heddle frame. The top end of the first heddle frame is provided with a heddle guiding part. Springs are arranged at the lower ends of the first heddle frame and the second heddle frame, and the lower ends of the springs are connected with a tail heddle. The thickness of the connecting part of the first heddle frame is greater than the thickness of the first heddle frame above the connecting part.

[0005] The first heddle frame above the connecting part is located at the middle part in the thickness direction of the upper end of the connecting part, and steps are formed between the two sides in the thickness direction of the connecting part and the first heddle frame above it.

[0006] Isolation sleeves are sleeved on at least two springs between the tail heddle and the first heddle frame and the second heddle frame, and at least one isolation sleeve is required on any two adjacent springs.

[0007] As an optimization, a connecting body is arranged at the lower end of the second heddle frame, and through holes for the first heddle frame and the spring on the first heddle frame to pass through are arranged on the connecting body. The number of springs at the lower end of the second heddle frame is one, and it is connected to the connecting body between the through holes.

[0008] Isolation sleeves are sleeved on at least one spring between the tail heddle and the first heddle frame and the connecting body, and at least one isolation sleeve is required on any two adjacent springs.

[0009] Generally, the first heddle frame is a plastic heddle frame and the second heddle frame is a steel heddle frame.

[0010] An improved jacquard heddle mechanism obtained by the present utility model reduces the thickness of the first heddle frame above the connecting part so that it is smaller than the thickness of the connecting part. In this way, during use, the deviation amplitude of the yarn is relatively small, the pressure exerted by the first heddle frame on the yarn can be reduced, thereby reducing the friction between the two and reducing the wear on the first heddle frame. In addition, the setting of the isolation sleeve can prevent adjacent springs from being caught and linked during rapid telescoping, resulting in incorrect actions, and can also position the lowest position of the heddle frame to prevent the heddle frames from being uneven due to differences in the strength of the springs. Description of the Drawings

[0011] Figure 1 is the front view of the present utility model;

[0012] Figure 2 is the partial perspective view of the connection between the first heddle frame and the second heddle frame of the present utility model;

[0013] Figure 3 is Figure 2 the partial enlarged schematic view of;

[0014] Figure 4 is the structural schematic view of the connection between the spring and the tail heddle of the present utility model;

[0015] Figure 5 is the structural schematic view of the first heddle frame of the present utility model;

[0016] Figure 6 is the structural schematic view of the second heddle frame and the connecting body of the present utility model;

[0017] Figure 7 is the structural schematic view of the isolation sleeve of the present utility model. Detailed Embodiment

[0018] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the drawings and preferred embodiments, details the specific embodiments, structures, features and their effects according to the present utility model as follows.

[0019] Embodiment 1:

[0020] Such as Figures 1-7As shown in the figure, the utility model discloses an improved jacquard heddle mechanism, which includes two first heddle frames 1 and one second heddle frame 2. The middle part of the first heddle frame 1 is a connecting part 3, and a vertical guiding channel 10 is arranged in the connecting part 3. A yarn guiding hole 4 is arranged at the top of the second heddle frame 2. The two sides of the second heddle frame 2 extend downward to form a downward U-shaped structure. The lower ends of the two sides of the second heddle frame 2 respectively pass through the guiding channels 10 of one first heddle frame 1. A heddle guiding part 5 is arranged at the top end of the first heddle frame 1. Springs 7 are arranged at the lower ends of the first heddle frame 1 and the second heddle frame 2. The lower ends of the springs 7 are connected with tail heddles 9. The thickness of the connecting part 3 of the first heddle frame 1 is greater than the thickness of the first heddle frame 1 above the connecting part 3.

[0021] Since the lower ends of the two sides of the second heddle frame 2 need to pass through the corresponding first heddle frames 1, a guiding channel 10 needs to be arranged inside the connecting part 3 of the first heddle frame 1. At the same time, in order to ensure the strength of the connecting part 3, the connecting part 3 of the first heddle frame 1 needs to have a relatively large thickness. When the yarn passes from one side of the first heddle frame 1 to the other side of the other first heddle frame 1, the yarn will shift. Therefore, in order to reduce the shift of the yarn, the thickness of the first heddle frame 1 above the connecting part 3 is made smaller, which can reduce the shift amount of the yarn when the yarn passes from one side of the first heddle frame 1 to the other side of the other first heddle frame 1 during heddle combination, thereby reducing the pressure generated between the first heddle frame 1 and the yarn, ultimately reducing the friction between the yarn and the first heddle frame 1, reducing the wear of the first heddle frame 1 during the heddle combination process, and improving the service life of the first heddle frame 1.

[0022] As for the thickness of the first heddle frame 1 below the connecting part 3, it can be smaller than the thickness of the connecting part 3 or the same as the thickness of the connecting part 3. Considering the cost, it is preferred to reduce the thickness of the first heddle frame 1 below the connecting part 3 to make it the same as the thickness of the first heddle frame 1 above the connecting part 3.

[0023] The heddle guiding part 5 of the first heddle frame 1 is connected with the jacquard component. The jacquard component drives the first heddle frame 1 to move upward. When the jacquard component releases the upward pulling force, the first heddle frame 1 moves downward to a proper position under the action of the spring 7.

[0024] The shape of the connecting part 3 of the two first heddle frames 1 is an existing structure.

[0025] A connecting body 6 is arranged at the lower end of the second heddle frame 2. Through holes for the first heddle frame 1 and the spring 7 on the first heddle frame 1 to pass through are arranged on the connecting body 6. The number of springs 7 at the lower end of the second heddle frame 2 is one, and it is connected to the connecting body 6 between the through holes.

[0026] The first heddle frame 1 above the connecting part 3 is located at the middle part in the thickness direction of the upper end of the connecting part 3. Steps are formed between the two sides in the thickness direction of the connecting part 3 and the first heddle frame 1 above it.

[0027] The first heddle 1 above the connecting part 3 is arranged at the middle part in the thickness direction of the connecting part 3. In this way, during use, the two first heddles 1 can be used interchangeably, with stronger applicability and no distinction between left and right.

[0028] A connecting body 6 is arranged at the lower end of the second heddle 2. The connecting body 6 can connect the lower ends of the U-shaped second heddles 2 into an integral structure and extend downward at the middle part. A spring 7 is arranged at the extended part. In this way, one spring 7 can be used to drive the second heddle 2 to reset. The amount of the spring 7 can be reduced, and at the same time, the space required for the lower ends of the first heddle 1 and the second heddle 2 can be reduced, making the overall structure more compact.

[0029] An isolation sleeve 8 is sleeved on at least one spring 7 between the tail heddle 9, the first heddle 1 and the connecting body 6. At least one isolation sleeve 8 is required between any two adjacent springs 7. Since there are only three springs 7 at the lower ends of the first heddle 1 and the second heddle 2 in this solution, the spring 7 on the connecting body 6 below the second heddle 2 is located in the middle position, and the springs 7 at the lower ends of the first heddle 1 are located on both sides. Therefore, it is preferable to sleeve an isolation sleeve 8 outside the spring 7 on the connecting body 6 below the second heddle 2. In this way, all three springs 7 can be separated by one isolation sleeve 8. The isolation sleeve 8 can prevent the adjacent springs 7 from being twisted and linked, so that the springs 7 can all move independently, with high stability.

[0030] Of course, an isolation sleeve 8 can be sleeved outside each spring 7. The length of the isolation sleeve 8 can be set according to actual needs. When the first heddle 1 and the second heddle 2 move downward to a specified position, they abut against the upper end of the isolation sleeve 8. In this way, the isolation sleeve 8 can position the downward positions of the first heddle 1 and the second heddle 2, avoiding uneven final downward positions of the first heddle 1 and the second heddle 2 caused by the difference in the force of the springs 7.

[0031] Generally, the first heddle 1 is a plastic heddle, and the second heddle 2 is a steel heddle.

[0032] Embodiment 2:

[0033] The present utility model discloses an improved jacquard harness mechanism, which is different from Embodiment 1 in that: a connecting body 6 is not arranged at the lower end of the second heddle 2, and springs 7 can be arranged at both lower ends on both sides of the second heddle 2.

[0034] An isolation sleeve 8 is sleeved on at least two springs 7 between the tail heddle 9, the first heddle 1 and the second heddle 2. At least one isolation sleeve 8 is required between any two adjacent springs 7.

[0035] In this case, the two springs 7 at the lower end of the second heddle frame 2 are located outside the two springs 7 of the first heddle frame 1. At least two spacer sleeves 8 are required. The spacer sleeves 8 can be sleeved on the first spring 7 and the third spring 7 from left to right, so that adjacent springs 7 are isolated from each other and there will be no interference during the stretching and restoring processes.

[0036] Of course, the spacer sleeves 8 can also be sleeved on all four springs 7 to achieve the positioning effect in Embodiment 1 when the first heddle frame 1 and the second heddle frame 2 are descending, so as to ensure that the final descending positions of the first heddle frame 1 and the second heddle frame 2 are horizontal.

[0037] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "plurality" is two or more unless otherwise specifically defined.

[0038] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" 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; it can be directly connected or indirectly connected through an intermediate medium, and it can be the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0039] In this application, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0040] As mentioned above, the above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the technical content disclosed above. However, as long as it does not depart from the content of the technical solution of the present utility model, any simplified modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An improved jacquard twirling heald mechanism, comprising two first healds and one second heald, characterized in that: The middle part of the first heald is a connecting part, a vertical guide channel is arranged on the connecting part, a yarn guide hole is arranged on the top of the second heald, both sides of the second heald extend downward to form a downward U-shaped structure, the lower ends of both sides of the second heald pass through a guide channel of the first heald respectively, a heald drawing part is arranged on the top of the first heald, springs are arranged at the lower ends of the first heald and the second heald, the lower end of the spring is connected to the tail heald, and the thickness of the connecting part of the first heald is greater than the thickness of the first heald above the connecting part.

2. The improved jacquard leno mechanism according to claim 1, characterized in that: The first heald piece above the connecting part is located in the middle of the upper end of the connecting part in the thickness direction, and steps are formed between both sides of the connecting part in the thickness direction and the first heald piece above it.

3. An improved jacquard leno mechanism according to claim 1 or 2, characterized in that: A connector is provided at the lower end of the second heald, and a through hole is provided on the connector for the first heald and the spring on the first heald to pass through. There is one spring at the lower end of the second heald, and it is connected to the connector between the through holes.

4. An improved jacquard leno mechanism according to claim 1 or 2, characterized in that: At least two springs between the tail heddle and the first heddle piece and the second heddle piece are sleeved with isolating sleeves, and any two adjacent springs need to have at least one isolating sleeve.

5. An improved jacquard leash mechanism according to claim 3, characterized in that: At least one spring between the tail heddle, the first heddle and the connector is sleeved with an isolating sleeve, and any two adjacent springs need to have at least one isolating sleeve.

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