A double needle bed warp knitting machine spindle phase angle fine adjustment device
By designing a fine-tuning device with a movable tension wheel on a double-needle bed warp knitting machine, the problem of low spindle phase angle adjustment accuracy was solved, enabling convenient assembly and disassembly of the synchronous belt and improving the accuracy of loop mating.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN JILONG MACHINE TECHNOLOGIES CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-09
AI Technical Summary
The phase angle adjustment accuracy of the spindle of the existing double needle bed warp knitting machine is low, and the assembly and disassembly of the timing belt is inconvenient, resulting in insufficient loop forming accuracy.
A fine-tuning device is designed, comprising first and second tensioning pulleys that can move relative to each other. The tensioning pulleys are driven to perform linear motion by the first and second displacement adjustment mechanisms, thereby adjusting the tension of the timing belt and thus precisely adjusting the phase angle of the main shaft.
It enables rapid and accurate adjustment of the spindle phase angle, simplifies the assembly and disassembly process of the timing belt, improves the accuracy of the coil fit, and reduces labor intensity.
Smart Images
Figure CN224337868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of textile machinery and equipment, and in particular to a phase angle fine adjustment device for the main shaft of a double needle bed warp knitting machine. Background Technology
[0002] The double-needle bed warp knitting machine has two loop-forming systems, one at the front and one at the back. In one loop-forming cycle (360° rotation of the main shaft), the two loop-forming systems alternately form a loop once. To ensure the loop-forming requirement, the two loop-forming systems have strict synchronization requirements, that is, their respective main shafts must be completely synchronized and have a phase angle of approximately 180°.
[0003] This dual-spindle drive system typically includes a main motor, a first spindle, and a second spindle. The main motor is connected to the first spindle via a first synchronous belt, and the first and second spindles are connected via a second synchronous belt. To ensure the phase angle, the second synchronous belt needs to be installed after the phase angles of the first and second spindles are adjusted. Since the second synchronous belt requires proper preload, the flanges on the synchronous belt pulley need to be removed and reinstalled during assembly. If the phase angle deviates by 180° during operation, exceeding the allowable range, the second spindle needs to be adjusted to the required phase angle by offsetting the number of teeth between the pulley and the synchronous belt. Due to the tooth pitch relationship, the phase angle adjustment cannot be continuous but only segmented, resulting in relatively low adjustment accuracy. Utility Model Content
[0004] The purpose of this invention is to provide a device for fine-tuning the phase angle of the main shaft of a double needle bed warp knitting machine.
[0005] The technical solution to achieve the purpose of this utility model is: a phase angle fine adjustment device for the main shaft of a double needle bed warp knitting machine, which includes a first tensioning wheel and a second tensioning wheel that are relatively movable and disposed between a first main shaft and a second main shaft. The first main shaft and the second main shaft are horizontally arranged on the machine base and connected by a synchronous belt drive. The first tensioning wheel is located above the synchronous belt and abuts against the synchronous belt, and the second tensioning wheel is located below the synchronous belt and abuts against the synchronous belt. The axial directions of the first tensioning wheel and the second tensioning wheel are both parallel to the axial direction of the first main shaft. The machine base is also equipped with a first displacement adjustment mechanism that drives the first tensioning wheel to move vertically upward linearly and a second displacement adjustment mechanism that drives the second tensioning wheel to move vertically upward linearly.
[0006] Further, the first displacement adjustment mechanism includes a first fixed base and a first slider. The first fixed base is mounted on a base above the synchronous belt via two first support legs. The first fixed base has an outer surface facing the synchronous belt. A first sliding groove is formed on the outer surface of the first fixed base. The first slider is fastened to the first sliding groove by a first bolt. A first slotted hole is formed on the base between the two first support legs. The first bolt passes through the first slotted hole and the first fixed base and connects to the first slider. The first tensioning wheel is rotatably mounted on the first slider. A second bolt is vertically screwed onto the groove wall of the first sliding groove above the first slider. The second bolt passes through the groove wall of the first sliding groove and faces the first slider. The block is set up; the second displacement adjustment mechanism includes a second fixed seat and a second slider. The second fixed seat is mounted on a base on the lower side of the synchronous belt by two second support legs. The second fixed seat has an outer surface facing the synchronous belt. A second sliding groove is opened on the outer surface of the second fixed seat. The second slider is fastened to the sliding groove by a third bolt. A second strip hole is opened on the base between the two second support legs. The third bolt passes through the second strip hole and the second fixed seat and is connected to the second slider. The second tensioning wheel is rotatably mounted on the second slider. A fourth bolt is vertically screwed on the groove wall of the second sliding groove below the second slider. The fourth bolt passes through the groove wall of the second sliding groove and is set towards the second slider.
[0007] The first and second tensioning wheels of this invention are relatively movable and can adjust the tension of the timing belt. In turn, the angle of the timing belt pulley on the main shaft can be adjusted as needed to achieve fine adjustment of the phase of the output timing belt pulley. Its structure is simple and the timing belt is easy to disassemble and assemble, which greatly reduces the labor intensity of the warp knitting machine maintenance worker and improves the loop forming accuracy of the double needle bed warp knitting machine. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the main structure of the phase angle fine-tuning device for the main shaft of the double needle bed warp knitting machine according to an embodiment of the present invention;
[0009] Figure 2 for Figure 1 A schematic diagram of the AA-direction cross-section structure. Detailed Implementation
[0010] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0011] like Figure 1 and Figure 2As shown, a phase angle fine-tuning device for the main shaft of a double-needle bed warp knitting machine includes a first tensioning wheel 1 and a second tensioning wheel 2 that are relatively movable and disposed between a first main shaft 10 and a second main shaft 20. The first main shaft 10 and the second main shaft 20 are horizontally arranged on a machine base 100 and are connected by a synchronous belt 30. The first tensioning wheel 1 is located above the synchronous belt 30 and abuts against the synchronous belt 30, and the second tensioning wheel 2 is located below the synchronous belt 30 and abuts against the synchronous belt 30. The axial directions of the first tensioning wheel 1 and the second tensioning wheel 2 are both parallel to the axial direction of the first main shaft 10. The machine base 100 is also equipped with a first displacement adjustment mechanism 3 that drives the first tensioning wheel 1 to move vertically upward linearly, and a second displacement adjustment mechanism 4 that drives the second tensioning wheel 2 to move vertically upward linearly.
[0012] The first displacement adjustment mechanism 3 includes a first fixed seat 31 and a first slider 32. The first fixed seat 31 is mounted on a base 100 above the synchronous belt 30 via two first support legs 311. The first fixed seat 31 has an outer surface facing the synchronous belt 30. A first groove 312 is formed on the outer surface of the first fixed seat 31. The first slider 32 is fastened to the first groove 312 by a first bolt 33. A first strip hole 101 is formed on the base between the two first support legs 311. The first bolt 33 passes through the first strip hole 101 and the first fixed seat 31 and is connected to the first slider 32. The first tensioning wheel 1 is rotatably mounted on the first slider 32. A second bolt 34 is vertically screwed on the groove wall of the first groove 312 above the first slider 32. The second bolt 34 passes through the groove wall of the first groove 312 and is positioned towards the first slider 32.
[0013] The second displacement adjustment mechanism 4 includes a second fixed base 41 and a second slider 42. The second fixed base 41 is mounted on a base 100 on the lower side of the synchronous belt 30 via two second support legs 411. The second fixed base 41 has an outer surface facing the synchronous belt 30. A second groove 412 is formed on the outer surface of the second fixed base 41. The second slider 42 is fastened to the second groove 412 by a third bolt 43. A second strip hole 102 is formed on the base 100 between the two second support legs 411. The third bolt 43 passes through the second strip hole 102 and the second fixed base 41 and is connected to the second slider 42. The second tensioning wheel 2 is rotatably mounted on the second slider 42. A fourth bolt 44 is vertically screwed onto the groove wall of the second groove 412 below the second slider 42. The fourth bolt 44 passes through the groove wall of the second groove 412 and is positioned towards the second slider 42.
[0014] During operation, the first spindle typically rotates clockwise. The working principle of the spindle phase angle fine-tuning device for the double-needle bed warp knitting machine described in this embodiment is as follows:
[0015] (1) Method for adjusting the phase angle of the second spindle 20: Loosen the first bolt 33 and the third bolt 43 respectively, then adjust the second bolt 34 and the fourth bolt 44 respectively to move them upward, then adjust the first slider 32 and the second slider 42 respectively to move the first slider 32 and the second slider 42 upward at the same time, thereby raising the first tension wheel 1 and the second tension wheel 2 at the same time, and ensuring that the timing belt 30 is in a tensioned state, so that the timing belt pulley of the second spindle 20 is advanced by a certain angle. When the phase angle reaches the requirement, tighten each bolt.
[0016] (2) Adjustment method for the phase angle lag of the second spindle: Loosen the first bolt 33 and the third bolt 43 respectively, then adjust the second bolt 34 and the fourth bolt 44 respectively to move them downwards, then adjust the first slider 32 and the second slider 42 respectively to move them downwards at the same time, so that the first tension wheel 1 and the second tension wheel 2 descend at the same time, and ensure that the synchronous belt is in a tensioned state, so that the synchronous belt pulley of the second spindle 20 reverses a certain angle. When the phase angle reaches the requirement, tighten each bolt.
[0017] (3) Method for disassembling and assembling the timing belt 30: Loosen the first bolt 33 and the third bolt 43 respectively, and then adjust the second bolt 34 to make the first tensioning wheel 1 retract in the opposite direction. At this time, the timing belt 30 is in a relaxed state, and the timing belt 30 can be easily disassembled and assembled.
[0018] The dual-needle bed warp knitting machine spindle phase angle fine adjustment device implemented in this embodiment can quickly and accurately adjust the phase angle of the two spindles, and at the same time, it is very convenient to disassemble and assemble the timing belt, which greatly reduces the labor intensity of the warp knitting machine maintenance worker and improves the loop forming accuracy of the dual-needle bed warp knitting machine.
[0019] The structures of the first displacement adjustment mechanism and the second displacement adjustment mechanism of this utility model are not limited to those shown in the embodiment, and can also be other linear drive structures in the mechanical field, which will not be elaborated here.
[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent process transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A phase angle fine-tuning device for the main shaft of a double-needle bed warp knitting machine, characterized in that: It includes a first tensioning wheel and a second tensioning wheel that are movable relative to each other, disposed between a first spindle and a second spindle. The first spindle and the second spindle are horizontally arranged on a machine base and connected by a synchronous belt drive. The first tensioning wheel is located above the synchronous belt and abuts against the synchronous belt, and the second tensioning wheel is located below the synchronous belt and abuts against the synchronous belt. The axial directions of the first tensioning wheel and the second tensioning wheel are both parallel to the axial direction of the first spindle. The machine base is also equipped with a first displacement adjustment mechanism that drives the first tensioning wheel to move vertically upward linearly, and a second displacement adjustment mechanism that drives the second tensioning wheel to move vertically upward linearly.
2. The phase angle fine-tuning device for the main shaft of a double-needle bed warp knitting machine according to claim 1, characterized in that: The first displacement adjustment mechanism includes a first fixed base and a first slider. The first fixed base is mounted on a base above the synchronous belt via two first support legs. The first fixed base has an outer surface facing the synchronous belt. A first groove is formed on the outer surface of the first fixed base. The first slider is fastened to the first groove by a first bolt. A first slotted hole is formed on the base between the two first support legs. The first bolt passes through the first slotted hole and the first fixed base to connect with the first slider. A first tensioning wheel is rotatably mounted on the first slider. A second bolt is vertically screwed onto the groove wall of the first groove above the first slider. The second bolt passes through the groove wall of the first groove and is positioned towards the first slider. The second displacement adjustment mechanism includes a second fixed seat and a second slider. The second fixed seat is mounted on a base on the lower side of the synchronous belt via two second support legs. The second fixed seat has an outer surface facing the synchronous belt. A second sliding groove is formed on the outer surface of the second fixed seat. The second slider is fastened to the sliding groove by a third bolt. A second slotted hole is formed on the base between the two second support legs. The third bolt passes through the second slotted hole and the second fixed seat and connects to the second slider. The second tensioning wheel is rotatably mounted on the second slider. A fourth bolt is vertically screwed onto the groove wall of the second sliding groove below the second slider. The fourth bolt passes through the groove wall of the second sliding groove and is positioned towards the second slider.