Positioning device and method for circumferential reference alignment of upper and lower hill angle seats on a circular weft knitting machine

Abstract

The application discloses a positioning device and method for circumferential reference alignment of upper and lower hill angle seats on a circular weft machine, specifically, a first measuring table for measuring the circumferential linear deviation of the middle seat is arranged on the outer side of the side wall of the inner part of the alignment adjusting device, the first measuring table is a digital measuring table, and at least has a measuring data display and initialization; the upper hill angle seat and the lower hill angle seat at the needle gate position are defined as a first upper hill angle seat and a first lower hill angle seat respectively, an alignment tool is installed on the first upper hill angle seat, the alignment tool comprises a fixing block and a measuring plate, the fixing block is fixed in the first upper hill angle seat, the measuring plate is integrally formed or separately fixed on the outer end of the fixing plate, the free end of the measuring plate points to the first lower hill angle seat, at least a first pair of mark points are arranged on the measuring plate, a second pair of mark points are arranged on the first lower hill angle seat, the alignment adjusting device is adjusted so that the first pair of mark points and the second pair of mark points are opposite to each other in position, and thus the circumferential reference alignment of the upper and lower hill angle seats is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of knitting machines, in particular to a positioning device and method for the reference alignment of the upper and lower cam angle bases on a circular weft knitting machine. BACKGROUND

[0002] The conventional circular weft knitting machine is delivered to the user with the corresponding number of upper and lower cam angle bases (also known as cam blocks or rhombic blocks) installed in position, and the user can visually check whether the upper and lower cam angles located at the needle gate position are in the central position. A reference alignment adjustment device (which is a prior art and can be found in CN115305630A) is provided between the inner cam and the middle cam base for adjusting the deflection of the middle cam base in the clockwise or counterclockwise direction, thereby adjusting the circumferential position of the corresponding number of upper and lower cam angle bases. A mechanical dial gauge is attached to the outer side wall of the inner cam connecting block of the reference alignment adjustment device. When the user starts the production operation, the experienced machine adjuster needs to adjust the circumferential relative position between the upper and lower cam angle bases (mainly the upper and lower cam angles located at the needle gate) according to the type of fabric, weaving process, pattern, and thickness of the fabric, in order to perform the weaving operation. However, after each adjustment, the value of the dial gauge will change, so when the same circular weft knitting machine needs to weave another pattern, the experienced machine adjuster needs to re-adjust the machine. If the machine adjuster is not in good working condition or there is a talent flow, it will seriously affect the machine adjustment progress of the weaving mill. At the same time, due to the rapid change of fashion trends, the pattern and type of fabric often change, but the salary of a professional and experienced machine adjuster is very high. Even large weaving mills cannot employ a sufficient number of experienced machine adjusters. The machines need to be adjusted one by one, and the weaving mill cannot complete the machine adjustment operation for a large number of circular weft knitting machines in the factory area in a short period of time, which cannot adapt to the changes in the fast-paced market demand. SUMMARY

[0003] The first object of the present application is to provide a positioning device that allows a machine adjuster with only general machine adjustment experience to accurately and efficiently perform the circumferential reference alignment of the upper and lower cam angle bases, thereby providing the necessary prerequisites for efficiently completing the machine adjustment operation of the entire machine due to the change of the woven fabric.

[0004] The second object of the present application is to provide a positioning method for the circumferential reference alignment of the upper and lower cam angle bases of a circular weft knitting machine using the above-mentioned positioning device.

[0005] To achieve the first object of the present application, the present application discloses a positioning device for circumferential reference alignment of upper and lower hill angle seats on a circular weft knitting machine, which comprises a first measuring table for indirectly measuring circumferential angle offset of the middle seat, wherein the first measuring table is a digital measuring table with at least measuring data display and initialization; the upper and lower hill angle seats at the needle gate position are defined as the first upper hill angle seat and the first lower hill angle seat, the first upper hill angle seat is left empty, and a positioning tool is installed at the position where the first upper hill angle seat is originally installed, wherein the positioning tool comprises a fixing block and a measuring plate, the fixing block is fixed on the peripheral edge of the middle seat, the measuring plate is integrally formed or separately fixed on the end of the fixing plate on the outer side, the free end of the measuring plate points to the first lower hill angle seat, at least a first pair of mark points are arranged on the measuring plate, a second pair of mark points are arranged on the first lower hill angle seat, and the circumferential reference alignment of the upper and lower hill angle seats is realized by aligning the first pair of mark points with the second pair of mark points.

[0006] To achieve the second object of the present application, the present application discloses a regulating method for circumferential reference alignment of upper and lower hill angle seats on a circular weft knitting machine using the above positioning device, wherein a first measuring table is installed on the outer side wall of the inner block of the alignment adjusting device; except the first upper hill angle seat, the remaining upper and lower hill angle seats are installed in the corresponding peripheral edge of the middle seat and the lower hill angle fixing seat, and the first upper hill angle seat at the needle gate position is left empty; a positioning tool is installed on the peripheral edge of the middle seat, wherein the positioning tool comprises a fixing block and a measuring plate, one end of the fixing block is fixed on the peripheral edge of the middle seat, the other end is connected with the measuring plate, and the free end of the measuring plate points to the first lower hill angle seat; the middle seat is circumferentially offset by adjusting the alignment adjusting device, the first pair of mark points are aligned with the second pair of mark points, and the data displayed on the first measuring table is initialized to zero; the positioning tool is detached from the middle seat, the first upper hill angle seat is installed in the middle seat, and the circumferential reference alignment of the upper and lower hill angle seats on the circular weft knitting machine is completed.

[0007] With the positioning device and the adjusting method, the relative spacing between the first upper corner seat installed on the periphery of the middle seat and other upper corner seats is fixed in the circumferential direction, the relative spacing between the first lower corner seat installed on the lower corner fixed seat and other lower corner seats is fixed in the circumferential direction, the consistency of the included angle between the longitudinal central axis X1 of the first upper corner seat of each circular knitting machine and the longitudinal central axis X2 of the first lower corner seat is ensured, the consistency of the included angle between the longitudinal central axis of each upper corner seat and the longitudinal central axis of each lower corner seat at the corresponding position in the height direction is ensured, the circumferential reference alignment of the upper and lower corner seats defined in the application is realized, when the machine adjuster adjusts the machine for the first time according to the different weaving requirements of the cloth, the value displayed on the first measurement table is collected and classified, the value is the linear displacement offset of the detection end straight rod segment of the corresponding first measurement table obtained by converting the circumferential offset angle of the corresponding first upper corner seat relative to the first lower corner seat, the value is matched with the corresponding woven cloth, and in the subsequent weaving of the same cloth by the same equipment, the ordinary machine adjuster only needs to adjust the circumferential offset between the longitudinal central axis X1 of the first upper corner seat and the longitudinal central axis X2 of the first lower corner seat according to the data recorded before, the machine adjustment efficiency is improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0008] The specific description given as a non-limiting example better explains what the application comprises and how it can be implemented, in addition, the description refers to the attached drawings, in which:

[0009] Figure 1 The application discloses a circular weft knitting machine (partial) three-dimensional structure diagram of installation alignment tooling;

[0010] Figure 2 The application discloses a semi-sectional view of a circular weft knitting machine (partial) with installation alignment tooling;

[0011] Figure 3 The application discloses an exploded schematic diagram of a middle seat and alignment tooling;

[0012] Figure 4 The application discloses a structure diagram of removing alignment tooling and installing each upper and lower corner seat. DETAILED DESCRIPTION

[0013] The application will be described in detail below in combination with the drawings and specific embodiments.

[0014] As Figure 1The application discloses a positioning device suitable for circumferential reference alignment of upper and lower hill corner seats, a first measuring table 1 for measuring the circumferential linear deviation of the middle seat 6 is arranged on the outer side of the side wall of the inner connecting block a1 of the alignment adjusting device a, and the specific structure of the alignment adjusting device a is known in the art, and the specific structure can be referred to the technical solution disclosed in CN115305630A. The background art of the patent document discloses that the alignment adjusting device a adopts a manual mode for alignment adjustment, and also discloses that a control motor can be used to realize non-manual intervention alignment adjustment. The first measuring table 1 is a digital measuring table rather than a traditional mechanical measuring table, and at least has the functions of measuring data display and initialization, and preferably adopts a digital dial gauge. The upper hill corner seat and the lower hill corner seat located at the needle gate position are defined as a first upper hill corner seat 21 and a first lower hill corner seat 31 respectively, the first upper hill corner seat 21 originally installed on the peripheral part 2 of the middle seat is left empty, and an alignment tool 4 is installed at the position. The alignment tool 4 comprises a fixed block 41 and a measuring plate 42. More specifically, the fixed block 41 is a long strip-shaped rectangular block, one end of which is a first connecting part 411, and the other end is a second connecting part 412. The first connecting part 411 is used to realize fixation with the peripheral part 2 of the middle seat 6, and the structure is consistent with the structure of any upper hill corner seat for fixing with the corresponding position of the peripheral part 2 of the middle seat 6. Specifically, as shown in Figure 3 A positioning column 61 and an inclined threaded hole 62 are arranged on the peripheral part (step part) 2 of the middle seat 6, the first connecting part 411 is provided with a positioning groove 4111 at the position facing the positioning column 61, and the first connecting part 411 is provided with an inclined end face, and a through hole 4112 penetrating and connecting with the inclined threaded hole 62 is arranged on the inclined end face. The positioning groove 4111 of the first connecting part 411 of the fixed block 41 is inserted into the positioning column 61, a bolt 44 is sequentially inserted through the through hole 4112 and locked in the inclined threaded hole 62, and the fixed block 41 is fixed on the peripheral part 2 of the middle seat 6. The second connecting part 412 has a vertical plane, and the measuring plate 42 is integrally or separately arranged on the vertical plane. In order to facilitate processing and manufacturing, the measuring plate 42 is separately arranged on the second connecting part 412. More specifically, a vertical fixing recess 4121 is formed on the vertical plane, the measuring plate 42 is composed of a straight rod segment and a horizontal segment from top to bottom, and has an inverted T shape. The straight rod segment of the measuring plate 42 is inserted into the fixing recess 4121, the width of the straight rod segment is matched with the width of the fixing recess 4121, and the thickness of the straight rod segment is greater than or equal to the depth of the fixing recess 4121. A locking device 5 is arranged to lock the straight rod segment of the measuring plate 42 in the fixing recess 4121. The horizontal segment of the measuring plate 42 is provided with a first mark 43, and the first mark 43 vertically points to the top end face of the first lower hill corner seat 31. The top end face of the first lower hill corner seat 31 is provided with a second mark 32.

[0015] More preferably, the design is as shown in Figure 1 and Figure 2 The straight rod section of the measuring plate 42 is provided with an adjusting hole 422, and the locking device 5 comprises at least a locking bolt 51 and a threaded hole 52 provided in the fixed groove 4121. The threaded section of the locking bolt 51 has a diameter smaller than the length of the adjusting hole 422. The locking bolt 51 passes through the adjusting hole 422 and is screwed into the threaded hole 52. In this way, the distance between the measuring plate 42 and the first lower cam seat 31 can be adjusted very conveniently, so that the first pair of marks 43 of the measuring plate 42 is as close as possible to the second pair of marks 32, facilitating the observation of the relative positions of the two pairs of marks by the naked eye.

[0016] Preferably, the longitudinal central axis of the fixed block 41 and the longitudinal central axis of the measuring plate 42 are opposite to the longitudinal central axis X1 of the first upper cam seat 21, and the first pair of marks 43 is arranged on the longitudinal central axis of the measuring plate 42. The second pair of marks 32 is arranged on the longitudinal central axis X2 of the first lower cam seat 31.

[0017] The present application also discloses a method for adjusting the circumferential reference alignment of the upper and lower cam seats of a circular weft knitting machine using the above-mentioned positioning device. A first measuring gauge 1 is mounted on the outer side wall of the inner block a1 of the alignment adjusting device a. Except for the first upper cam seat 21, the remaining upper and lower cam seats are mounted on the circumferential portion 2 of the corresponding center seat 6 and the lower cam fixed seat 3, so that the first upper cam seat 21 located at the needle gate position is left empty. An alignment tool 4 is mounted at this position, which comprises a fixed block 41 and a measuring plate 42. One end of the fixed block 41 is fixed to the circumferential portion 2 of the center seat 6 originally used for mounting the first upper cam seat 21, and the other end is connected to the measuring plate 42, so that the free end of the measuring plate 42 points to the first lower cam seat 31. The circumferential offset of the center seat 6 is generated by adjusting the alignment adjusting device a, so that the first pair of marks 43 and the second pair of marks 32 are opposite to each other. The data displayed on the first measuring gauge 1 is initialized to zero, and then the alignment tool 4 is detached from the circumferential portion 2 of the center seat 6. The first upper cam seat 21 is then mounted to the circumferential portion 2 of the center seat 6 (as shown in Figure 4 ), and the circumferential reference alignment of the upper and lower cam seats of the circular weft knitting machine is completed.

[0018] The above embodiments and drawings do not limit the product form and style of the present application. Any appropriate changes and modifications made by those skilled in the art shall be considered as falling within the scope of the present application.

Claims

1. A positioning device for circumferential reference alignment of the upper and lower corner seats of a circular knitting machine, comprising a first measuring instrument (1), the first measuring instrument (1) being used to indirectly measure the circumferential angular offset of the center seat (6), characterized in that: The first measuring instrument (1) is a digital measuring instrument, which at least has the ability to display measurement data and initialize; the upper and lower corner seats located at the needle gate position are defined as the first upper corner seat (21) and the first lower corner seat (31) respectively. The first upper corner seat (21) is left empty, and an alignment fixture (4) is installed at the original position where the first upper corner seat (21) is installed. The alignment fixture (4) includes a fixing block (41) and a measuring plate (42). The fixing block (41) is fixed. At the periphery (2) of the central seat (6), the measuring plate (42) is integrally formed or separately fixed to the outer end of the fixed plate. The free end of the measuring plate (42) points to the first lower corner seat (31). At least a first alignment point (43) is set on the measuring plate (42), and a second alignment point (32) is set on the first lower corner seat (31). By aligning the first alignment point (43) with the second alignment point (32), the circumferential reference alignment of the upper and lower corner seats is achieved.

2. The positioning device as described in claim 1, characterized in that: The second alignment point (32) is set on the top end face of the first downhill corner seat (31), and the free end of the measuring plate (42) is set above and adjacent to the first downhill corner seat (31).

3. The positioning device as described in claim 1 or 2, characterized in that: The alignment fixture (4) is aligned and installed on the first upper corner seat (21), and the first alignment point (43) is set on the longitudinal centerline of the measuring plate (42); the second alignment point (32) is set on the longitudinal centerline of the first lower corner seat (31).

4. The positioning device as described in claim 3, characterized in that: The outer wall of the free end of the measuring plate (42) is provided with a scale leader line, and the first pair of calibration points (43) is centrally located on the scale leader line.

5. The positioning device as described in claim 2, characterized in that: The fixing block (41) is a long rectangular block with a first connecting part (411) at one end and a second connecting part (412) at the other end. The first connecting part (411) is used to fix the middle core seat (6) to the periphery. Its structure is consistent with the structure of any upper corner seat used to fix the middle core seat (6) at the corresponding position. The second connecting part (412) has a vertical plane. The measuring plate (42) is fixed integrally or separately on the vertical plane, so that the measuring plate (42) points vertically to the top end face of the first lower corner seat (31).

6. The positioning device as described in claim 5, characterized in that: The measuring plate (42) is composed of a straight rod section and a horizontal section from top to bottom, and it is in the shape of an "inverted T". The first alignment point (43) is set in the horizontal section.

7. The positioning device as described in claim 5, characterized in that: When the measuring plate (42) is fixed in a split manner on the vertical plane of the second connecting part (412), a vertical fixed groove (4121) is formed on the vertical plane. The straight rod section of the measuring plate (42) is inserted into the fixed groove (4121), and its width matches the width of the straight rod section. Its thickness is greater than or equal to the depth of the groove (4121). A locking device (5) is added to lock the straight rod section of the measuring plate (42) into the fixed groove (4121).

8. The positioning device as described in claim 7, characterized in that: The measuring plate (42) has an adjustment hole (422) on its straight rod section. The locking device includes at least a locking bolt (51) and a threaded hole (52) in the fixed groove (4121). The diameter of the threaded section of the locking bolt (51) is smaller than the length of the adjustment hole (422). The locking bolt (51) passes through the adjustment hole (422) and is screwed into the threaded hole (52).

9. A method for adjusting the circumferential reference alignment of the upper and lower corner seats of a circular knitting machine using the positioning device as described in any one of claims 1-8, characterized in that: A first measuring gauge (1) is installed on the outer wall of the inner connecting block (a1) of the alignment adjustment device (a); except for the first upper corner seat (21), the remaining upper and lower corner seats are installed in the periphery of the corresponding middle core seat (6) and the lower corner fixing seat, leaving the first upper corner seat (21) at the needle gate position empty; an alignment fixture (4) is installed on the periphery of the middle core seat (6), the alignment fixture (4) including a fixing block (41) and a measuring plate (42), and one end of the fixing block (41) is fixed to the middle core seat (6). On the periphery, the other end is connected to the measuring plate (42), so that the free end of the measuring plate (42) points to the first lower corner seat (31); by adjusting the alignment adjustment device (a), the center seat (6) is circumferentially offset, so that the first alignment point (43) and the second alignment point (32) are relative, and the data displayed on the first measuring table (1) is initialized to zero; the alignment fixture (4) is removed from the center seat (6), and the first upper corner seat (21) is then aligned and installed into the center seat (6) to complete the circumferential reference alignment of the upper and lower corner seats of the circular knitting machine.

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