A weft insertion performance testing device for air-jet looms

Abstract

The present invention discloses a device for detecting the weft insertion performance of an air jet loom, comprising a main connecting plate, several groups of detection bases fixed to the lower end surface of the main connecting plate, a plurality of small screws mounted on the detection bases, and a plurality of test yarns wound on the small screws. Each group of detection bases comprises a guide slider, a support plate, a front detection plate, and a rear detection plate. The upper end of the support plate is fixedly connected to the front part of the side wall of the guide slider, and the lower end thereof is mounted with the front detection plate; the upper end of the rear detection plate is fixedly connected to the rear part of the same side wall of the guide slider. The present invention can slide along the upper reed beam of the reed, synchronously detect the airflow at multiple positions, simulate the airflow changes at various locations of the reed, and intuitively display the airflow in the form of a floating state of yarn; it can also observe the magnitude of the weft insertion traction force, understand the consistency and stability of the airflow within the entire length of the reed, provide a platform for detecting the reed structure and the performance of the auxiliary nozzles, and conveniently provide a basis for their selection and debugging.

Description

Technical Field

[0001] The invention relates to the technical field of air jet looms, and in particular to a weft insertion performance detection device for air jet looms. Background Art

[0002] The weft insertion system of an air-jet loom is crucial, and the reed and auxiliary nozzles are key components of this system. Changes in their structure and position directly impact the loom's weaving efficiency and energy consumption. Due to the unique and diverse structures of the reed and auxiliary nozzles, their actual impact on weft insertion is difficult to detect. Currently, there is a lack of devices for detecting the weft insertion airflow state, a lack of testing and visual demonstration of the effects of the reed and auxiliary nozzles on weft insertion, and a lack of reference for selecting and debugging reeds and auxiliary nozzles. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art and to provide a weft insertion performance detection device for an air jet loom in view of the air flow pattern caused by the interaction between the reed structure and the auxiliary nozzle of the air jet loom.

[0004] To solve the above-mentioned technical problems, the present invention adopts a technical solution: a weft insertion performance testing device for an air jet loom, comprising a main connecting plate, several sets of testing bases, a plurality of small screws mounted on the testing bases, and a plurality of test yarns wound around the small screws. Each set of testing bases includes a guide slider, a support plate, a front testing plate, and a rear testing plate. The lower end surface of the guide slider is provided with a slide groove adapted to fit the upper reed beam of the reed. The upper end of the support plate is fixedly connected to the front portion of a side wall of the guide slider by screws. The upper end of the front testing plate is connected to the lower end of the support plate. The upper end of the rear testing plate is fixedly connected to the rear portion of the same side wall of the guide slider by screws.

[0005] The upper end surfaces of the guide sliders in several groups of detection bases are fixed to the lower end surface of the main connecting plate by screws, and the several groups of detection bases are parallel to each other; multiple small screw rods pass through the corresponding screw rod through-holes set on the front detection plate and the rear detection plate and are fixed by nuts, and are parallel to each other; a supporting screw rod is also installed through the front detection plate of several groups of detection bases and fixed by nuts.

[0006] Furthermore, a vertical adjustment slot is provided on the upper portion of the support plate, and a screw passes through the corresponding vertical adjustment slot and is fixedly connected to the guide slider; a positioning shaft hole and a support connection hole are provided on the lower portion.

[0007] Furthermore, the upper part of the front detection plate is provided with a mounting shaft hole corresponding to the positioning shaft hole and an arc-shaped adjustment long groove with the mounting shaft hole as the center of the circle. The positioning shaft passes through the corresponding mounting shaft hole and the positioning shaft hole in sequence to connect the support plate and the front detection plate. Positioning sleeves are installed at both ends and positioned and fixed by set screws; the adjustment bolt passes through the arc-shaped adjustment long groove and the support connection hole to slide and fix the support plate and the front detection plate; the lower part of the front detection plate is provided with multiple screw through holes.

[0008] Furthermore, there are three groups of detection bases on the main connecting plate, wherein the first detection base and the third detection base are respectively installed at the left and right ends of the main connecting plate, and the second detection base is installed near the left end of the main connecting plate and is spaced a fixed distance from the first detection base.

[0009] Furthermore, the front detection plates in the first detection base and the second detection base are fixedly provided with a detection protrusion adapted to the reed groove at the lower end, which can be embedded in the reed groove; the end of the detection protrusion is provided with a catheter mounting hole, and the guide tube passes through the corresponding catheter mounting holes in the first detection base and the second detection base and is fixed.

[0010] Furthermore, the left end of the guide tube is a bell mouth, on which a tension spring adjustment bolt is fixedly installed; the right end thereof is extended and opened, and tooth-shaped grooves equidistantly arranged along its length direction are provided in the corresponding position interval as a scale; a tension spring is provided in the guide tube, one end of the tension spring is fixed on the tension spring adjustment bolt, and the test yarn 2 is wound around the hook at the other end, and the initial reference position of one end of the tension spring wrapped around the test yarn 2 is aligned with the initial scale of the scale.

[0011] Furthermore, the small lead screw, positioning shaft, and supporting lead screw are all integrated rod structures, and are connected through all the detection bases.

[0012] Compared with existing technologies, the present invention has the following advantages: it can slide along the reed beam on the reed, enabling simultaneous detection of airflow at multiple locations on the reed; the angle and position of the front detection can be adjusted according to the reed structure and detection needs; when the auxiliary nozzle is operating normally, it simulates and detects airflow changes at various locations on the reed, visually displaying the airflow as the floating state of the yarn; and the magnitude of the weft insertion traction force can be observed using a tension spring scale to understand the consistency and stability of the airflow throughout the reed length. This system can be applied to nozzle structural performance research and production testing and inspection, reed structural performance research and production testing and inspection, fabric selection, and problem analysis in weaving workshops. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 yes Figure 1 Right view of the overall structure;

[0015] Figure 3 It is a structural schematic diagram of the support plate in the present invention;

[0016] Figure 4 It is a structural schematic diagram of the front detection plate in the present invention;

[0017] Figure 5 It is a structural schematic diagram of the guide tube in the present invention;

[0018] Figure 6 is a front isometric view of the present invention mounted on a reed;

[0019] Figure 7 is a rear isometric view of the present invention mounted on a reed;

[0020] Figure 8 yes Figure 6 Front view of the mid-structure;

[0021] Figure 9 yes Figure 8 Cross-sectional view in the middle BB direction;

[0022] In the figure: 1. Main connecting plate, 2. Detection base, 3. Positioning shaft, 4. Small lead screw, 5. Support lead screw, 6. Test yarn 1, 7. Guide tube, 8. Tension spring, 9. Test yarn 2, 10. Hexagon socket screw, 11. Hexagon nut, 12. Positioning sleeve, 13. Set bolt, 14. Tension spring adjustment bolt, 15. Toothed groove, 16. Reed, 17. Reed, 18. Pressing block, 19. Auxiliary nozzle; 21. Guide slider, 22. Support plate, 23. Front detection plate, 24. Rear detection plate;

[0023] 171. Upper reed beam, 172. Reed groove, 201. Vertical adjustment slot, 202. Positioning shaft hole, 203. Support connection hole, 204. Mounting shaft hole, 205. Arc adjustment slot, 206. Support through hole, 207. Screw through hole, 208. Detection protrusion, 209. Slide groove. DETAILED DESCRIPTION

[0024] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are merely relational words determined for the convenience of describing the structural relationships of the various components of the present invention, and do not specifically mean that any component in the present invention must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" in the invention are used for descriptive purposes only and do not specifically indicate order or precedence, nor are they intended to limit the invention. They are merely used to distinguish components or operations described with the same technical terms and should not be understood to indicate or imply their relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0026] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0028] like Figure 1 and Figure 2 As shown, a weft insertion performance testing device for an air jet loom comprises a main connecting plate 1, three sets of testing bases 2, a plurality of small screws 4 mounted on the testing bases 2, and a plurality of test yarns 6 wound around the small screws 4. Each set of testing bases 2 comprises a guide slider 21, a support plate 22, a front testing plate 23, and a rear testing plate 24. The lower end surface of the guide slider 21 is provided with an inwardly recessed groove 209, dividing the guide slider 21 into a front half and a rear half; a support plate 22 is fixedly mounted on the front half of the left side wall of the guide slider 21 by a hexagon socket screw 10, and the support plate 22 is fixedly mounted on ... front half of the left side wall of the guide slider 21 by a hexagon socket screw 10, and the support plate 22 is fixedly mounted on the front Figure 3 As shown, the upper portion of the support plate 22 is provided with two vertical adjustment slots 201, which are located on the same vertical center line. The lower portion of the support plate 22 is provided with a positioning shaft hole 202 and a support connection hole 203; the lower portion of the support plate 22 is connected to the front detection plate 23, combined with Figure 4As shown, the upper part of the front detection plate 23 is provided with a mounting shaft hole 204 corresponding to the positioning shaft hole 202 and an arc-shaped adjustment long groove 205 with the mounting shaft hole 204 as the center; the positioning shaft 3 passes through the corresponding mounting shaft hole 204 and the positioning shaft hole 202 in sequence to connect the support plate 22 in each group of detection bases 2 to the front detection plate 23, and the two ends of the positioning shaft 3 are externally installed with positioning sleeves 12, and the outer side of the positioning sleeve 12 is positioned and fixed by a set screw 13; an adjustment bolt is also installed and connected between the support plate 22 and the front detection plate 23, and the adjustment bolt is a hexagon socket screw, which passes through the arc adjustment long groove 205 on the front detection plate 23 and the support connection hole 203 on the support plate 22 to slide and fix the support plate 22 and the front detection plate 23; a support through-hole 206 is provided at the lower part of the front detection plate 23, below the arc-shaped adjustment long groove 205, and three screw through-holes 207 are provided on the opposite side of the support through-hole 206. The rear detection plate 24 is fixedly installed on the rear half of the left side wall of the guide slider 21 by means of a hexagon socket screw 10. The lower part of the rear detection plate 24 is provided with two mutually parallel screw holes 207. A small screw 4 is installed through each of the screw holes 207 and is fixed by a hexagonal nut 11. The hexagonal nut 11 located on the outside of the detection plate straightens the small screw 4, and the hexagonal nut 11 located on the inside of the detection plate locks the small screw 4. A plurality of test yarns 6 are fixedly wound around the small screw 4 at equal intervals. The support screw 5 passes through the support holes 206 on the front detection plates 23 of the three groups of detection bases 2 in sequence and is fixed by the hexagonal nut 11, so that the three groups of front detection plates 23 can operate synchronously.

[0029] like Figure 1 As shown, the above three groups of detection bases 2 are respectively the first detection base, the second detection base and the third detection base from left to right. The upper ends of the guide sliders 21 in the first detection base and the third detection base are fixedly mounted on the lower end surfaces of the left and right ends of the main connecting plate 1 by hexagon socket screws 10; the second detection base is fixedly mounted at a specified position close to the first detection base, at a fixed distance from the first detection base, and the three groups of detection bases 2 are parallel to each other; wherein the lower parts of the front detection plates 23 in the first detection base and the second detection base are provided with mutually symmetrical detection protrusions 208, and the ends of the detection protrusions 208 are provided with catheter mounting holes, with reference to Figure 5A guide tube 7 is installed between the two detection protrusions 208. The left end of the guide tube 7 is a bell mouth, and a tension spring adjusting bolt 14 is installed; the other end is axially extended and opened, and the corresponding position interval of the extended opening is provided with equidistantly arranged tooth-shaped grooves 15 along the length direction of the guide tube 7. The arranged tooth-shaped grooves 15 form a reference scale, which is convenient for positioning the initial state of the tension spring 8 and observing and reading its stretched length; a tension spring 8 is installed in the guide tube 7, and one end of the tension spring 8 is fixedly screwed on the inner end of the tension spring adjusting bolt 14, and the extended length of the tension spring 8 can be adjusted in real time. The other end of the hook is fixedly wound with a test yarn 29, and the test yarn 29 is extended along the central axis of the guide tube 7, and the initial reference position of one end of the tension spring 8 wrapped with the test yarn 29 is aligned with the initial scale of the reference scale.

[0030] like Figure 6 As shown, the sley 16 is fixed on the frame of the air-jet loom, the reed 17 is vertically fixed in the sley 16 by a pressing block 18, and a plurality of auxiliary nozzles 19 are evenly arranged and installed on the front side of the sley 16 according to the needs of the loom. The auxiliary nozzles 19 are connected to the controlled solenoid valve through an air duct, and the solenoid valve is connected to the air source through the air duct.

[0031] When in use, the above-mentioned air jet loom weft insertion performance detection device is slowly pushed from the right end of the reed 17 along its upper reed beam 171 to the initial detection position on the left side of the reed 17, and the slide groove 209 on the lower side of the guide slider 21 is adapted to the upper reed beam 171. After pushing it to the left end of the reed 17, the position of the front detection plate 23 is fine-tuned according to the structure of the reed 17 and the position of the auxiliary nozzle 19. First, loosen the hexagon socket screw 10 connecting the support plate 22 and the guide slider 21, and adjust the height of the support plate 22 through the vertical adjustment slot 201 to achieve the up and down adjustment of the front detection plate 23. After adjusting to the appropriate position, tighten the hexagon socket screw 10; then loosen the hexagon socket screw 10 connecting the support plate 22 and the front detection plate 23, and rotate the support screw 5 with the positioning shaft 3 as the center to drive the front detection plate 23 to rotate and adjust within the active range of the arc-shaped adjustment slot 205, so that the end of the detection protrusion 208 is just embedded in the reed slot 172; the test preparation of the entire detection device is completed.

[0032] When the air jet loom is running and the auxiliary nozzle 19 is ventilated, the entire device is slid to the right along the upper reed beam 171 of the reed 17 to test each position. The test yarn 16 on the small screw 4 on the front detection plate 23 can detect the state of the airflow in front of the reed 17, and the test yarn 16 on the small screw 4 on the rear detection plate 24 can detect the state of the airflow in the rear of the reed 17. The different floating states displayed by the test yarn 16 can illustrate the basic state of the airflow here. The test yarn 29 at the position of the airflow groove formed by the reed groove 172 represents the basic state of the weft under the action of the auxiliary nozzle. The deformation length of the tension spring 8 can be used as a reference for the magnitude of the auxiliary nozzle's traction force on weft insertion. In this way, there can be a very intuitive display of the weft insertion status after the auxiliary nozzle is combined with the reed 17, indicating the airflow status in all directions of the auxiliary nozzle 19 and the reed 17, as well as the consistency and stability of the airflow within the entire length of the reed 17, providing a platform for the detection of the reed 17 and the auxiliary nozzle 19, facilitating the comparison of the reed 17 and the auxiliary nozzle 19, and providing a basis for their selection and debugging.

[0033] The above-mentioned detection bases 2 can be provided in multiple groups according to actual detection needs to achieve a full range of sliding airflow testing.

[0034] The parts not yet described in the present invention can be realized by adopting or drawing on the technical features in the prior art.

[0035] Finally, it should be noted that the description of the above-mentioned implementation mode is only used to illustrate the technical solution of the present invention, and is not a limitation of the present invention. The present invention is not limited to the above-mentioned examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A weft insertion performance detection device for an air jet loom, characterized in that: It includes a main connecting plate, several groups of detection bases, multiple small screws installed on the detection bases, and several test yarns wound on the small screws; each group of detection bases includes a guide slider, a support plate, a front detection plate and a rear detection plate. The lower end surface of the guide slider is provided with a slide groove adapted to the upper reed beam of the reed. The upper end of the support plate is fixedly connected to the front part of one side wall of the guide slider by screws, the upper end of the front detection plate is connected to the lower end of the support plate, and the upper end of the rear detection plate is fixedly connected to the rear part of the same side wall of the guide slider by screws. The upper end surfaces of the guide sliders in the several groups of detection bases are fixed to the lower end surface of the main connecting plate by screws, and the several groups of detection bases are parallel to each other; multiple small screws pass through the corresponding screw through holes set in the front detection plate and the rear detection plate respectively and are fixed by nuts, and are parallel to each other; support screws are also installed through the front detection plates of the several groups of detection bases and fixed by nuts; The upper part of the support plate is provided with a vertical adjustment slot, and the screw passes through the corresponding vertical adjustment slot to be fixedly connected to the guide slider; the lower part thereof is provided with a positioning shaft hole and a support connection hole; The upper part of the front detection plate is provided with a mounting shaft hole corresponding to the positioning shaft hole and an arc-shaped adjustment long groove with the mounting shaft hole as the center of the circle. The positioning shaft passes through the corresponding mounting shaft hole and the positioning shaft hole in sequence to connect the support plate and the front detection plate. Positioning sleeves are installed at both ends and positioned and fixed by set screws; the adjustment bolt passes through the arc-shaped adjustment long groove and the support connection hole to slide and fix the support plate and the front detection plate; the lower part of the front detection plate is provided with a plurality of screw rod through holes; There are three sets of detection bases on the main connecting plate, of which the first and third detection bases are installed at the left and right ends of the main connecting plate respectively, and the second detection base is installed near the left end of the main connecting plate and is spaced a fixed distance from the first detection base; The front detection plates in the first detection base and the second detection base are fixed at their lower ends with detection protrusions adapted to the reed grooves and capable of being embedded in the reed grooves; the ends of the detection protrusions are provided with guide tube mounting holes, and the guide tubes are passed through the corresponding guide tube mounting holes in the first detection base and the second detection base and fixed thereto; The left end of the guide tube is a bell mouth, on which a tension spring adjustment bolt is fixedly installed; the right end thereof is extended and opened, and tooth-shaped grooves equidistantly arranged along its length direction are provided in the corresponding position interval as a scale; a tension spring is provided in the guide tube, one end of the tension spring is fixed on the tension spring adjustment bolt, and the test yarn 2 is wound around the hook at the other end, and the initial reference position of one end of the tension spring wrapped around the test yarn 2 is aligned with the initial scale of the scale.

2. The weft insertion performance detection device for an air jet loom according to claim 1, characterized in that: The small lead screw, positioning shaft and supporting lead screw are all integrated rod structures and are connected through all the detection bases.

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