Toy bar with damping and weight reducing functions in flat knitting machine

Abstract

The utility model discloses a top rod with damping and weight reducing functions in a flat knitting machine, which comprises a top rod body, V-shaped guide grooves are arranged on the upper side wall and the lower side wall of the top rod body, and a plurality of first connecting through holes penetrating through the upper V-shaped guide groove and the lower V-shaped guide groove of the top rod body are respectively arranged at the left end and the right end of the top rod body. The diameter of the first connecting through hole is 1.02-1.20 times that of the connecting bolt, a plurality of second connecting through holes penetrating through the front side wall and the rear side wall of the sky rod body are formed in the left end and the right end of the sky rod body respectively, and a plurality of damping and lightening holes penetrating through the front side wall and the rear side wall of the sky rod body are formed in the sky rod body at equal intervals from left to right. The damping and lightening holes are located in the neutral layer of the sky rod body. The utility model has the advantages that the damping and lightening holes are arranged to reduce the weight of the sky rod and prevent resonance between the sky rod and the Uz seat, so that the quality of knitted products is ensured.

Description

Technical Field

[0001] The utility model relates to the field of knitting machinery, in particular to a cantilever with shock-absorbing and weight-reducing functions in a flat knitting machine. Background Art

[0002] The sky bar is an important component in the knitting machine. The sky bar is parallel to the machine head guide rail, and the Uss seat with a yarn mouth is slidably set on the sky bar. The sky bar plays a precise guiding role for the Uss seat. The Uss seat carries the yarn mouth and runs synchronously with the random head under the guidance of the sky bar, so that the yarn is delivered into the weaving area at the correct position and angle for weaving, so that the yarn maintains the same tension during the weaving process, thereby stably weaving the corresponding fabric.

[0003] At present, most of the installation structures of the sky rod on the market are the sky rod complete installation devices in the flat knitting machine with the publication number: CN203625595U, in which the two ends of the sky rod are respectively fixed on the sky rod seats at the two ends of the knitting flat knitting machine, and the middle part of the sky rod is suspended. Since the sky rod is solid and heavy, when the sky rod is suspended for a long time, this part of the sky rod is prone to slight drooping due to the effect of gravity, which will affect the parallelism between the sky rod and the machine head guide rail, resulting in the inability of the wes seat to run smoothly, affecting the supply stability of the yarn, and easily causing missed stitches or broken threads, affecting the quality of the knitted products; and when the wes seat moves quickly on the sky rod, it is easy to generate shaking to apply a vibration frequency to the sky rod. When the vibration frequency of the sky rod matches its own natural frequency, the sky rod will resonate with the wes seat, and the wes seat will shake, which will cause missed stitches or broken threads, affecting the quality of the knitted products. Utility Model Content

[0004] The utility model aims to provide a sky rod with built-in shock-absorbing and weight-reducing functions in a knitting flat machine, which can effectively reduce weight and avoid resonance by modifying the structure of the sky rod.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a sky rod with built-in shock-absorbing and weight-reducing function in a knitting machine, comprising: a sky rod body, V-shaped guide grooves are opened on the upper and lower side walls of the sky rod body, and a plurality of first connecting through holes penetrating the upper and lower V-shaped guide grooves of the sky rod body are respectively arranged at the left and right ends of the sky rod body, and the diameter of the first connecting through hole is 1.02 to 1.20 times the diameter of the connecting bolt, and a plurality of second connecting through holes penetrating the front and rear side walls of the sky rod body are respectively arranged at the left and right ends of the sky rod body, and a plurality of shock-absorbing and weight-reducing holes penetrating the front and rear side walls of the sky rod body are equidistantly arranged on the sky rod body from left to right, and the shock-absorbing and weight-reducing holes are located on the neutral layer of the sky rod body.

[0006] Furthermore, the aforementioned knitting machine has a sky rod with built-in shock-absorbing and weight-reducing functions, wherein weight-reducing grooves are provided on the front and rear side walls of the sky rod body, the center line of the weight-reducing grooves coincides with the center line of the sky rod body, and the shock-absorbing and weight-reducing holes and the second connecting through holes both penetrate the front and rear weight-reducing grooves.

[0007] Furthermore, the aforementioned knitting machine has a built-in shock-absorbing and weight-reducing function, wherein the shock-absorbing and weight-reducing hole is any one of a rectangular, triangular, circular, elliptical, square, and diamond shape, and the maximum dimension of the shock-absorbing and weight-reducing hole in the vertical direction in the cross section is 0.8cm to 1cm.

[0008] Furthermore, the aforementioned knitting machine has a sky rod with built-in shock-absorbing and weight-reducing functions, wherein rounded corners are arranged on the shock-absorbing and weight-reducing holes.

[0009] Furthermore, in the aforementioned knitting machine, the sky rod has a built-in shock-absorbing and weight-reducing function, wherein the spacing between the shock-absorbing and weight-reducing holes is 1mm to 10mm.

[0010] The utility model has the advantages that a plurality of shock-absorbing and weight-reducing holes are equidistantly arranged on the neutral layer of the sky rod body, which can not only reduce the weight of the sky rod body and prevent the suspended part of the sky rod body from sagging, and ensure the parallelism between the sky rod body and the machine head guide rail, but also play a shock-absorbing role to prevent the Us seat from resonating with the sky rod body when moving on the sky rod body, causing the Us seat to vibrate due to resonance during operation. By arranging the shock-absorbing and weight-reducing holes on the sky rod body, the smooth operation of the Us seat can be ensured, thereby ensuring the quality of the knitted products; first connecting through holes with a diameter of 1.02 to 1.20 times the diameter of the connecting bolts are arranged at both ends of the sky rod body. When the sky rod body is connected to the sky rod seat by using the connecting bolts, resonance at the connecting bolts can be prevented from affecting the sky rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the cross-sectional structure of the sky rod with the function of shock absorption and weight reduction in the flat knitting machine.

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the sky rod with built-in shock-absorbing and weight-reducing functions in the knitting machine described in the utility model in another direction.

[0013] Figure 3 The utility model is a schematic diagram of the connection structure between the sky rod and the sky rod seat with the shock-absorbing and weight-reducing function in the knitting machine described in the utility model.

[0014] Figure 4 yes Figure 3 Schematic diagram of the structure in the side view direction. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0016] like Figure 1 , Figure 2 As shown, the sky rod with built-in shock-absorbing and weight-reducing function in the knitting machine described in the utility model comprises: a sky rod body 1, V-shaped guide grooves 11 are opened on the upper and lower side walls of the sky rod body 1, the Us seat is slidably clamped in the upper and lower V-shaped guide grooves 11, and a plurality of first connecting through holes 12 penetrating the upper and lower V-shaped guide grooves 11 are respectively arranged at the left and right ends of the sky rod body 1. The diameter of the first connecting through hole 12 is 1.02 to 1.20 times the diameter of the connecting bolt 2. When the connecting bolt 2 is inserted into the first connecting through hole 12 and is threadedly connected to the sky rod seat, vibration is easily generated at the connection of the connecting bolt 2 due to the influence of various external excitations. The vibration is likely to resonate with the mast. According to the article “The Effect of Bolt-Hole Clearance on the Modal Frequency of Single-Layer Single-Bolt Connection Plates” published in the Journal of Engineering Design, Vol. 24, No. 4 in August 2017, if the ratio of the through-hole diameter to the bolt diameter is kept at 1.02 to 1.20 times, the effect of a slight change in the through-hole diameter in this range on the natural frequency of the structure is negligible. This means that at this ratio, the connection of the connecting bolt 2 is not prone to resonance. In this way, the purpose of vibration prevention can be achieved through simple size adjustment without the need for complex physical changes in the structure, saving costs and simplifying the design process.

[0017] A plurality of second connecting through holes penetrating the front and rear side walls of the sky pole body 1 are respectively arranged at the left and right ends of the sky pole body 1, and a plurality of shock-absorbing and weight-reducing holes 13 penetrating the front and rear side walls of the sky pole body 1 are equidistantly arranged on the sky pole body 1 from left to right. The shock-absorbing and weight-reducing holes 13 are located on the neutral layer of the sky pole body 1, and the neutral layer is the part that will neither be stretched nor compressed when the sheet material is bent, and is generally located on the midline of the cross section of the sky pole body 1. The establishment of the shock-absorbing and weight-reducing holes 13 at the neutral layer of the sky pole body 1 will not affect the strength of the sky pole, and the establishment of the shock-absorbing and weight-reducing holes 13 on the neutral layer can It can reduce the weight of the sky pole and reduce the occurrence of resonance. The principle is as follows: first, the shock-absorbing and weight-reducing holes 13 can reduce the vibration level of the sky pole body 1 by scattering and absorbing part of the vibration energy. Secondly, the shock-absorbing and weight-reducing holes 13 block the direct propagation path of the vibration wave to a certain extent, play an isolation role, and reduce the efficiency of vibration transmission from one part to another. Finally, the shock-absorbing and weight-reducing holes 13 increase the surface area of ​​the sky pole body 1, which helps to improve the material damping of the sky pole body 1. More surface area increases energy dissipation, thereby suppressing the occurrence of vibration.

[0018] In the present embodiment, weight-reducing grooves 14 are provided on the front and rear side walls of the sky rod body 1, and the center line of the weight-reducing groove 14 coincides with the center line of the sky rod body 1, so that the position of the neutral layer in the sky rod body 1 can be ensured to remain unchanged. The weight-reducing grooves 14 can further reduce the weight of the sky rod body 1 and improve the strength of the sky rod body 1. This is because the weight-reducing grooves 14 can enable various parts of the sky rod body 1 to bear the external load more evenly, avoiding excessive concentration of local stress and causing fatigue damage to the sky rod body 1. By providing the weight-reducing grooves 14, the moment of inertia of the cross-section can be effectively increased, thereby improving the bending energy of the cross-section, which is beneficial for the sky rod body 1 to remain stable when bearing complex loads and prevent deformation. The shock-absorbing and weight-reducing hole 13 and the second connecting through hole both penetrate the front and rear weight-reducing grooves 14, and rounded corners are provided at both ends of the shock-absorbing and weight-reducing hole 13, which can effectively disperse the load and reduce stress. The weight-reducing holes 13 are not only concentrated, but also improve the mechanical properties around the shock-absorbing and weight-reducing holes 13, so that the sky pole body 1 can bear the load more evenly when subjected to external force, and can ensure the anti-fatigue performance of the sky pole body 1. The spacing between the shock-absorbing and weight-reducing holes 13 is 1mm~10mm, and the spacing control of the shock-absorbing and weight-reducing holes 13 is determined according to the length of the sky pole body 1. As the length of the sky pole body 1 is longer, it is not only prone to bending deformation but also prone to resonance. Therefore, the longer the sky pole body 1, the more shock-absorbing and weight-reducing holes 13 are needed in the longer sky pole body 1 to reduce shock and weight. By controlling the spacing between the shock-absorbing and weight-reducing holes 13, the number of the shock-absorbing and weight-reducing holes 13 can be well determined, and the weight-reducing grooves 14 improve the structural strength of the sky pole body 1, and the shock-absorbing and weight-reducing holes 13 are located on the neutral layer, so the minimum spacing between the shock-absorbing and weight-reducing holes 13 can be controlled to be above 0.5mm without affecting the strength of the sky pole body 1.

[0019] In this embodiment, since the height of the sky pole body 1 on the market is generally between 3cm and 3.5cm, there are certain restrictions on the size of the shock-absorbing and weight-reducing hole 13. The maximum size of the vertical direction in the cross section of the shock-absorbing and weight-reducing hole 13 is 0.8cm to 1cm. This is to prevent the cross-sectional height of the shock-absorbing and weight-reducing hole 13 from being too high and affecting the strength of the sky pole body 1. The shock-absorbing and weight-reducing hole 13 can be any one of a rectangular, triangular, polygonal, circular, elliptical, square, rhombus, and closed free curve shape. When the shock-absorbing and weight-reducing hole 13 is circular The diameter of the cross section of the circular shock-absorbing and weight-reducing hole 13 is 0.8cm~1cm. When the shock-absorbing and weight-reducing hole 13 is elliptical, the major axis of the cross section of the elliptical shock-absorbing and weight-reducing hole 13 is in a horizontal position and has a length of 1.1cm~1.3cm. The minor axis of the cross section of the elliptical shock-absorbing and weight-reducing hole 13 is in a vertical position and has a length of 0.8cm~1cm. When the shock-absorbing and weight-reducing hole 13 is square, the height of the cross section of the square shock-absorbing and weight-reducing hole 13 is 0.8cm~1cm. The shapes of the shock-absorbing and weight-reducing hole 13 include but are not limited to the above-mentioned shapes.

[0020] like Figure 3 , Figure 4 As shown, the structure of the sky rod body 1 described in the utility model is connected to two sky rod seats 3 in the knitting machine, and four sky rod bodies 1 described in the utility model are horizontally placed between the two sky rod seats 3, and the left and right ends of the sky rod body 1 are respectively placed on the two sky rod seats 3, and an equal-division block 4 is arranged between each two adjacent sky rod bodies 1, and the equal-division block 4 is provided with a through hole penetrating the front and rear side walls and the upper and lower side walls of the equal-division block 4, and each equal-division block 4 is of the same length and width, so that the front and rear spacing between each two adjacent sky rod bodies 1 can be ensured to be consistent, and each sky rod body can also be ensured 1, the maximum operating stroke of the Us seat on the sky rod 1 is consistent, the sky rod body 1 is connected to the sky rod seat 3 on the corresponding side after the connecting bolt 2 passes through the first connecting through hole 12, and the equal-dividing block 4 is also connected to the sky rod seat 3 by bolts. When the sky rod body 1 and the equal-dividing block 4 are fixed on the sky rod seat 3, the through holes on the equal-dividing block 4 that penetrate the front and rear side walls are aligned one by one with the second connecting through holes on the sky rod body 1, and the long bolt 5 is passed through all the second connecting through holes on the sky rod body 1 and the equal-dividing block 4, and then locked with a nut. In this way, the sky rod with its own shock-absorbing and weight-reducing function described in the present application is installed in the knitting machine.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. The knitting machine has a built-in shock-absorbing and weight-reducing function, including: The sky pole body is provided with V-shaped guide grooves on the upper and lower side walls of the sky pole body, and is characterized in that: a plurality of first connecting through holes penetrating the upper and lower V-shaped guide grooves of the sky pole body are respectively arranged at the left and right ends of the sky pole body, and the diameter of the first connecting through holes is 1.02 to 1.20 times the diameter of the connecting bolt; a plurality of second connecting through holes penetrating the front and rear side walls of the sky pole body are respectively arranged at the left and right ends of the sky pole body; a plurality of shock-absorbing and weight-reducing holes penetrating the front and rear side walls of the sky pole body are equidistantly arranged on the sky pole body from left to right, and the shock-absorbing and weight-reducing holes are located on the neutral layer of the sky pole body.

2. The sky rod with shock-absorbing and weight-reducing function in a flat knitting machine according to claim 1 is characterized in that: Weight reduction grooves are arranged on the front and rear side walls of the sky rod body, the center line of the weight reduction grooves coincides with the center line of the sky rod body, and the shock-absorbing and weight-reducing holes and the second connecting through holes penetrate the front and rear weight reduction grooves.

3. The sky rod with self-contained shock-absorbing and weight-reducing function in a flat knitting machine according to claim 1 or 2, characterized in that: The shock-absorbing and weight-reducing hole is any one of a rectangle, a triangle, a circle, an ellipse, a square, and a diamond, and the maximum dimension of the shock-absorbing and weight-reducing hole in the vertical direction in the cross section is 0.8 cm to 1 cm.

4. The sky rod with self-contained shock-absorbing and weight-reducing function in a flat knitting machine according to claim 3 is characterized in that: The shock-absorbing and weight-reducing holes are provided with rounded corners.

5. The sky rod with self-contained shock-absorbing and weight-reducing function in a flat knitting machine according to claim 3, characterized in that: The spacing between the shock-absorbing and weight-reducing holes is 1 mm to 10 mm.

Images