Balanced heald lifting unit
By designing a balancing heald frame unit in the loom, the angle formed by the heald frame and the vertical bar is always equal, thus solving the problem of lateral displacement of the heald frame during vertical movement and improving the stability of the loom and the weaving quality.
Patent Information
- Application Number
- CN202423302833.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The heald frames of existing looms are prone to lateral displacement during vertical movement, which leads to severe friction between the heald frames and the guide grooves, increasing the risk of breakage and affecting the service life of the shedding device and the quality of the woven fabric.
Design a balanced heddle lifting unit to ensure the stability of the heddle frame during vertical movement and reduce lateral displacement by keeping the angles formed by the two heddle lifting arms and the vertical rod always equal.
It effectively prevents friction between the left and right sides of the heald frame and the guide groove, reduces the risk of heald frame breakage, and improves the service life of the opening device and the quality of the woven fabric.
Smart Images
Figure CN223620581U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of loom technology, specifically to a balancing heddle-lifting unit. Background Technology
[0002] The structure inside a typical textile machine includes a warp feeding mechanism for supplying warp threads, an opening mechanism for separating the warp threads to form a shed, a weft insertion mechanism for introducing the weft threads into the shed, a beat-up mechanism for pushing the introduced weft threads towards the weft end, and a take-up mechanism for winding the fabric into a roll.
[0003] On a loom, the interlacing of warp and weft yarns is a necessary condition for forming woven fabrics. To achieve the interlacing of warp and weft, the warp yarns must be divided into upper and lower layers according to a certain pattern, forming a channel—the shed—that allows the weft introducer and weft medium to introduce the weft yarn. After the weft yarn is introduced into the shed, the two layers of warp yarns alternate up and down according to the fabric structure requirements, forming a new shed. This cycle is repeated, and this is called warp yarn opening, or simply opening.
[0004] The heddle-lifting mechanism is a crucial component of a loom. Its structural form, motion precision, and stability directly impact the efficiency, speed, and quality of weaving. The heddle-lifting mechanism lifts the yarn to form a weave. Currently, most loom shedding heddle-lifting methods on the market cannot ensure the vertical movement of the heddle frames. Lateral displacement occurs during this vertical movement, resulting in severe friction between the left and right sides of the heddle frames and the guide grooves. This friction can lead to breakage of the heddle frames under pressure. Furthermore, the lateral displacement increases vibration of the shedding device, affecting its lifespan and the quality of the woven fabric. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a balanced heddle lifting unit to solve the problem that the heddle frame will shift left and right during the up-and-down movement, affecting the service life of the sheathing device and the quality of the woven fabric.
[0006] This utility model provides a balanced lifting unit, comprising:
[0007] The heald frame has lifting lugs at both ends;
[0008] The vertical rods are connected to the lifting lugs respectively, and the vertical rods are not arranged parallel to each other;
[0009] The lifting arms are connected to the vertical rods respectively;
[0010] A long connecting rod, with its two ends connected to the lifting arm;
[0011] During the up-and-down movement of the heald frame, the angles formed by the two lifting arms and the vertical rod remain equal.
[0012] As can be seen from the above technical solution, the balanced heddle lifting unit provided by this utility model solves the problem that the left and right sides of the heddle frame are rubbed against the heddle frame guide groove during the up and down movement of the heddle frame by ensuring that the angles formed by the two heddle lifting arms and the vertical rod are always equal, thus solving the problem that the heddle frame is at risk of breakage due to the left and right displacement during the up and down movement of the heddle frame.
[0013] Optionally, the lifting arm includes lifting arm A and lifting arm B, and lifting arm B is further connected to a short connecting rod, which is connected to a cutting arm and is driven by the cutting arm.
[0014] Optionally, the lifting arm A is provided with a bearing hole A, and the lifting arm A is formed with an upper arm A, a left lower arm and a right lower arm respectively with the bearing hole A as the center. The upper arm A is connected to the lifting arm, the left lower arm is connected to the long connecting rod, and the right lower arm is connected to the vertical rod. The included angle between the left lower arm and the right lower arm is 110°.
[0015] Optionally, the lifting arm B is provided with a bearing hole B, and the lifting arm B is formed with an upper arm B and a lower arm with the bearing hole B as the center, and the included angle between the upper arm B and the lower arm is 85°.
[0016] Optionally, the upper arm B and the left lower arm are of equal length, and the right lower arm and the lower arm are of equal length.
[0017] Optionally, both the lifting arm A and the lifting arm B are provided with a plurality of weight reduction holes.
[0018] By adopting the above technical solution, this application has the following technical effects:
[0019] This utility model provides a balanced heddle lifting unit that solves the problem of lateral displacement during the up-and-down movement of the heddle frame, which causes friction between the left and right sides of the heddle frame and the heddle frame guide groove, thus posing a risk of breakage to the heddle frame. This is achieved by ensuring that the angles formed by the two heddle lifting arms and the vertical rod are always equal. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0021] Figure 1 A schematic diagram of a balancing heap unit provided for an embodiment of this utility model;
[0022] Figure 2 Another schematic diagram of a balancing heaving unit provided in an embodiment of this utility model.
[0023] Figure label:
[0024] 1-Heald frame; 2-Vertical rod; 3-Heald lifting arm; 31-Heald lifting arm A; 311-Bearing hole A; 312-Upper arm A; 313-Left lower arm; 314-Right lower arm; 32-Heald lifting arm B; 321-Bearing hole B; 322-Upper arm B; 323-Lower arm; 4-Long connecting rod; 5-Short connecting rod; 6-Cutter lifting arm; 7-Weight reduction hole. Detailed Implementation
[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0026] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] In this application, unless otherwise expressly specified and limited, the term "connection" and other such terms should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] like Figure 1 As shown, this embodiment provides a balancing heald frame 1, vertical rods 2, heald lifting arms 3, and long connecting rods 4. The heald frame 1 is provided with lifting lugs at both ends; the vertical rods 2 are respectively connected to the lifting lugs, and the vertical rods 2 are not parallel to each other; the heald lifting arms 3 are respectively connected to the vertical rods 2; the two ends of the long connecting rods 4 are respectively connected to the heald lifting arms 3; during the up and down movement of the heald frame 1, the angles formed by the two heald lifting arms 3 and the vertical rods 2 are always equal.
[0030] By ensuring that the angles α and β formed by the two lifting arms 3 and the vertical rod 2 are always equal, the problem of lateral displacement during the up-and-down movement of the heald frame 1, which causes friction between the left and right sides of the heald frame 1 and the heald frame guide groove, and thus poses a risk of breakage to the heald frame 1, is solved.
[0031] Optionally, the lifting arm 3 includes a lifting arm A31 and a lifting arm B32. The lifting arm B32 is also connected to a short link 5, which is connected to a cutting arm 6. The short link 5 is driven by the cutting arm 6.
[0032] Specifically, the lifting arm A31 has a bearing hole A311. Centered on the bearing hole A311, the lifting arm A31 forms an upper arm A312, a lower left arm 313, and a lower right arm 314. The upper arm A312 is connected to the lifting arm 6, the lower left arm 313 is connected to the long connecting rod 4, and the lower right arm 314 is connected to the vertical rod 2. The included angle θ1 between the lower left arm 313 and the lower right arm 314 is 110°. The lifting arm B32 has a bearing hole B. Centered on the bearing hole B321, the lifting arm B32 forms an upper arm B322 and a lower arm 323. The included angle θ2 between the upper arm B322 and the lower arm 323 is 85°. The length S4 of the upper arm B322 is equal to the length S2 of the lower left arm 313, both being 110mm. The length S1 of the lower right arm 314 is equal to the length S3 of the lower arm 323, both being 250mm. It should be noted that the length of each arm here refers to the distance from the hinge point to the center of the bearing hole.
[0033] In one possible implementation, both the lifting arm A31 and the lifting arm B32 are provided with a plurality of weight reduction holes 7.
[0034] Specifically, in this embodiment, the fabric width is 2300mm. The horizontal distance L1 between bearing hole A311 and bearing hole B321 is determined based on the fabric width (the actual width of the fabric). In this embodiment, L1 differs from the fabric width by 544mm. Several specifications of fabric width are listed below, as shown in Table 1.
[0035] Table 1
[0036]
[0037] The following example, with a width of 2300mm, will be used to verify the above data:
[0038] When the width is 2300mm, the horizontal distance L1 between bearing hole A311 and bearing hole B321 is 1756mm, the distance L2 between the two ends of the long connecting rod 4 and the hinge of the lifting arm A / B is 1745.43mm, and H is 33.5mm.
[0039] According to the formulas: Horizontal distance x = L1 + 110*sin(90°-85°+β) - 110*cos(180°-110°+α); Vertical distance y = H + 110*cos(90°-85°+β) + 110*sin(180°-110°+α), L2 = sqrt(x²+y²). When α = 5°, β = 5.03°; when α = 15°, β = 15.04°; when α = 20°, β = 20.03°. It can be seen that when the heald frame 1 moves up and down, the angular error is very small, and the angles formed by the two lifting arms 3 and the vertical rod 2 can be considered to be essentially equal, thus maintaining the up-and-down movement of the heald frame 1.
[0040] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A balanced lifting unit, characterized in that, include: The heald frame has lifting lugs at both ends; The vertical rods are connected to the lifting lugs respectively, and the vertical rods are not arranged parallel to each other; The lifting arms are connected to the vertical rods respectively; A long connecting rod, with its two ends connected to the lifting arm; During the up-and-down movement of the heald frame, the angles formed by the two lifting arms and the vertical rod remain equal.
2. The balancing and lifting unit according to claim 1, characterized in that, The lifting arm includes lifting arm A and lifting arm B. Lifting arm B is also connected to a short connecting rod, which is connected to a cutting arm and is driven by the cutting arm.
3. The balancing and lifting unit according to claim 2, characterized in that, The lifting arm A is provided with a bearing hole A. The lifting arm A is formed with an upper arm A, a left lower arm and a right lower arm with the bearing hole A as the center. The upper arm A is connected to the lifting arm, the left lower arm is connected to the long connecting rod, and the right lower arm is connected to the vertical rod. The included angle between the left lower arm and the right lower arm is 110°.
4. The balancing and lifting unit according to claim 3, characterized in that, The lifting arm B is provided with a bearing hole B, and the lifting arm B is formed with an upper arm B and a lower arm with the bearing hole B as the center. The included angle between the upper arm B and the lower arm is 85°.
5. The balancing and lifting unit according to claim 4, characterized in that, The upper arm B and the left lower arm are of equal length, and the right lower arm and the lower arm are of equal length.
6. The balancing and lifting unit according to claim 5, characterized in that, Both the lifting arm A and the lifting arm B are provided with several weight reduction holes.