Air pressure detection device for air jet loom

Abstract

The invention discloses an air pressure detection device for an air jet loom, belonging to the technical field of air jet looms. The air pressure detection device for an air jet loom comprises a mounting frame, wherein three brackets are movably and equidistantly arranged at the bottom of the mounting frame, an adjusting component which is respectively connected to the three brackets is movably arranged on the mounting frame, a switching component is arranged between the mounting frame and the adjusting component, a pressure measuring component is arranged at one end of the bracket away from the adjusting component, the pressure measuring component corresponds to a nozzle arranged on an air outlet plate, a controller which is electrically connected to an electrical device in the device is arranged on the mounting frame, and the device has the advantages of flexible adjustment, rapid pressure measurement, safety protection, precise detection, reliable structure, convenient operation, and simplicity and practicality.

Description

Technical Field

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

[0002] Air jet loom is a shuttleless loom that uses jet airflow to pull the weft yarn through the shed. The working principle of the air jet loom is to use air as the weft insertion medium, and the compressed air jet generates friction traction on the weft yarn to pull the weft yarn through the shed to complete the weft insertion action. This weft insertion method enables the air jet loom to achieve high speed and high yield.

[0003] When the air jet loom is in use, it is necessary to perform air pressure detection on it. During the detection, the existing air pressure detection device for the air jet loom usually needs to plug the air pipe of the external pressure gauge into the nozzle. Since each machine needs to perform air pressure detection dozens of times a day, frequent plugging and unplugging will cause damage to the inner wall of the nozzle, and the nozzle is prone to air leakage, which seriously affects the normal operation of the air jet loom and increases the workload of maintenance personnel.

[0004] Therefore, it is necessary to provide an air pressure detection device for an air jet loom to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide an air pressure detection device for an air jet loom to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A device for detecting air pressure of an air jet loom, comprising a mounting frame, wherein three brackets are movably and equidistantly arranged at the bottom of the mounting frame, an adjusting assembly connected to the three brackets respectively and movably arranged on the mounting frame, a switching assembly is arranged between the mounting frame and the adjusting assembly, a pressure measuring assembly is arranged at one end of the bracket away from the adjusting assembly, the pressure measuring assembly corresponds to a nozzle arranged on an air outlet plate, and a controller electrically connected to an electrical device in the device is arranged on the mounting frame; The pressure measuring assembly includes an upper cover plate arranged at one end of the bracket away from the adjusting assembly, a lower cover plate is movably provided on the side of the upper cover plate away from the bracket, a detection air pipe is provided between the upper cover plate and the lower cover plate, an elastic connection module is provided between the upper cover plate and the lower cover plate, a rubber ring is provided on the outer side wall of the end of the detection air pipe away from the bracket, a ring groove is provided on the side of the rubber ring away from the bracket, an air guide hole connected to the ring groove is provided on the rubber ring, an air pump is installed on the upper cover plate, an air guide pipe is connected between the air pump and the air guide hole, the bracket is installed with a connecting plate located at the end of the detection air pipe away from the rubber ring, and the connecting plate is provided with an air pressure sensor extending into the interior of the end of the detection air pipe away from the rubber ring.

[0007] As a further solution of the present invention, the elastic connection module includes a side ear 1 symmetrically arranged at both ends of the upper cover plate and a side ear 2 symmetrically arranged at both ends of the lower cover plate, a plurality of vertical rods are slidably arranged on the side ear 1, one end of the vertical rod is connected to the side ear 2, and the other ends of the plurality of vertical rods are connected through a baffle, and a spring 1 is connected between the baffle and the side ear 1 and is sleeved on the outside of the vertical rod.

[0008] As a further solution of the present invention, the adjustment component includes a rotating cylinder rotatably arranged on the inner side of the mounting frame, a bevel gear ring is arranged on the outer side of one end of the rotating cylinder, a bevel gear meshing with the bevel gear ring is rotatably connected to the inner side of the mounting frame, the bevel gear is connected to the motor installed on the mounting frame, a slot is arranged on the side of the rotating cylinder away from the mounting frame, a limiting slide groove is arranged in the middle of the inner side wall of the slot, two spiral grooves are spirally arranged on the inner side wall of the rotating cylinder, the two spiral grooves are symmetrically distributed about the limiting slide groove, and a bevel gear arranged on the inner side of the mounting frame is rotatably arranged on the inner side of the rotating cylinder A guide rod of the part, the guide rod is provided with a guide rod adjustment assembly, movable cylinders symmetrically provided at both ends of the guide rod, the movable cylinder 1 slidingly cooperates with the guide rod adjustment assembly, the movable cylinder 1 is provided with a sliding column 1 slidingly cooperates with the spiral groove, the middle part of the guide rod is provided with a movable cylinder 2 slidingly cooperates with the guide rod adjustment assembly, the movable cylinder 2 is provided with a sliding column 2 slidingly cooperates with the limiting sliding groove, two movable cylinders 1 and one movable cylinder 2 are respectively connected to corresponding brackets, and the bracket is located on a side of the movable cylinder 1 away from the sliding column 1 and on a side of the movable cylinder 2 away from the sliding column 2.

[0009] As a further scheme of the present invention, the switching assembly includes an inner gear ring arranged on the inner side of one end of the rotating cylinder and a gear groove arranged on the inner side of one end of the mounting frame, an electromagnet 1 is arranged in the gear groove, a guide slide groove 2 is arranged at the end of the guide rod close to the gear groove, a sliding rod is slidably arranged in the guide slide groove 2, an electromagnet 2 corresponding to the electromagnet 1 is installed at the end of the sliding rod close to the gear groove, a spring 2 is arranged between the gear groove and the sliding rod, and an outer gear ring engaged with the inner gear ring or the gear groove is connected to the end of the sliding rod close to the gear groove.

[0010] As a further solution of the present invention, the mounting frame is configured as an inverted C-shaped plate, and a handle is also installed on the mounting frame.

[0011] As a further solution of the present invention, the size of the upper cover plate is consistent with the size of the lower cover plate.

[0012] As a further solution of the present invention, the length of the sliding rod is greater than the thickness of the outer gear ring.

[0013] As a further solution of the present invention, the helix angle of the spiral groove is set to 30°-150°.

[0014] As a further solution of the present invention, the rotation axis of the limiting slide groove is colinear with the rotation axis of the rotating cylinder.

[0015] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects: 1. In the present invention, the pressure measuring component detects the air pressure inside the corresponding nozzle in a manner corresponding to the nozzle. Since the number of brackets is set to three, the device can perform pressure measurement processing on the three nozzles at the same time. By setting the pressure measuring component, the cumbersome operation of plugging the pressure measuring component into the nozzle every time the pressure is measured can be avoided, and the damage to the inner wall of the nozzle caused by the plugging operation required for frequent pressure measurement can be avoided, which can effectively extend the service life of the air jet loom; 2. In the present invention, one end of the air guide tube away from the air pump is connected to the air guide hole, and one end of the detection air pipe close to the rubber ring is aligned with the nozzle, and the rubber ring fits the air outlet plate, so that an annular closed cavity is formed between the air guide hole and the outer wall of the air outlet plate. The air pump draws out the air in the closed cavity by connecting the air guide tube and the air guide hole, so that the air pressure in the closed cavity is reduced. Under the action of atmospheric pressure, the rubber ring will be tightly attached to the air outlet plate, which can ensure the correspondence between the nozzle and the detection air pipe. The airflow ejected from the nozzle will stably pass through the detection air pipe and contact the air pressure sensor, thereby realizing non-destructive and accurate pressure measurement of the nozzle, avoiding damage to the inner wall of the nozzle caused by frequent plugging in the existing pressure measurement process, and at the same time, it also avoids the disadvantage that the outer diameter of the existing detection air pipe is smaller than the inner diameter of the nozzle and cannot accurately measure the pressure, thereby improving the accuracy of air pressure detection; 3. In the present invention, by controlling the engagement between the outer gear ring and the inner gear ring, the synchronous rotation between the rotating cylinder and the guide rod can be achieved, which is convenient for synchronous adjustment of the angles of the three pressure measuring assemblies to meet the pressure measurement requirements of nozzles at different positions. By controlling the engagement between the outer gear ring and the gear groove, the angle of the guide rod can be fixed, which is convenient for adjusting the spacing between adjacent pressure measuring assemblies to meet the pressure measurement requirements of nozzles at different spacings of different models of jet looms and realize flexible adjustment of the pressure measuring assemblies.

[0016] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of an air pressure detection device for an air jet loom in an embodiment of the invention.

[0018] Figure 2 It is a bottom view of the air pressure detection device for an air jet loom in an embodiment of the invention.

[0019] Figure 3 It is a schematic diagram of the structure of the pressure measuring assembly in the embodiment of the invention.

[0020] Figure 4 It is a cross-sectional view of a pressure measuring assembly in an embodiment of the invention.

[0021] Figure 5 It is an exploded view of the rotating cylinder, the movable cylinder 1 and the movable cylinder 2 in the embodiment of the invention.

[0022] Figure 6 It is a cross-sectional view of a mounting frame in an embodiment of the invention.

[0023] Figure 7 for Figure 6 A partial enlarged view of point A in the middle.

[0024] Figure 8 It is an exploded view of the mounting frame, rotating cylinder and guide rod in the embodiment of the invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the sliding rod in the embodiment of the invention.

[0026] Figure numerals: 1, mounting frame; 11, controller; 12, handle; 2, adjustment assembly; 21, motor; 22, bevel gear; 23, bevel gear ring; 24, rotating cylinder; 241, slot; 242, spiral groove; 243, limit slide; 25, guide rod; 251, guide slide 1; 26, movable cylinder 1; 261, slide column 1; 27, movable cylinder 2; 271, slide column 2; 3, bracket; 4, pressure measuring assembly; 41, upper cover plate; 411, side ear 1; 42, lower cover plate; 4 21. Side ear two; 43. Vertical pole; 44. Baffle; 45. Spring one; 46. Detection air pipe; 47. Rubber ring; 471. Ring groove; 472. Air guide hole; 48. Air guide pipe; 49. Air pump; 410. Connecting plate; 412. Air pressure sensor; 5. Air outlet plate; 51. Nozzle; 6. Switching assembly; 61. Inner gear ring; 62. Gear groove; 63. Electromagnet one; 64. Spring two; 65. Guide slide groove two; 66. Sliding rod; 67. Electromagnet two; 68. Outer gear ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] In one embodiment of the present invention, see Figure 1-Figure 2 and Figure 6A device for detecting air pressure of an air jet loom comprises a mounting frame 1, wherein three brackets 3 are movably and equidistantly arranged at the bottom of the mounting frame 1, an adjusting assembly 2 which is movably connected to the three brackets 3 respectively is arranged on the mounting frame 1, a switching assembly 6 is arranged between the mounting frame 1 and the adjusting assembly 2, a pressure measuring assembly 4 is arranged at one end of the bracket 3 away from the adjusting assembly 2, the pressure measuring assembly 4 corresponds to a nozzle 51 arranged on an air outlet plate 5, and a controller 11 which is electrically connected to the electrical equipment in the device is arranged on the mounting frame 1.

[0030] In this embodiment, the pressure measuring component 4 detects the air pressure inside the corresponding nozzle 51 in a manner corresponding to the nozzle 51. Since the number of brackets 3 is set to three, the device can perform pressure measurement processing on the three nozzles 51 respectively at the same time; through the cooperation of the switching component 6 and the adjusting component 2, the distance between two adjacent brackets 3 can be adaptively adjusted, and the angles of the three brackets 3 can be adjusted at the same time, thereby adjusting the angle of the pressure measuring component 4, which can meet the pressure measurement requirements of the nozzles 51 located at different positions; at the same time, through the setting of the pressure measuring component 4, it can be avoided The cumbersome operation of plugging the pressure measuring component 4 into the nozzle 51 each time the pressure is measured is eliminated, and the damage to the inner wall of the nozzle 51 caused by the plugging operation required for frequent pressure measurement is avoided, which can effectively extend the service life of the air jet loom; in addition, through the setting of the pressure measuring component 4, the air pressure in the nozzle 51 can be accurately detected, avoiding the problem that the air pressure cannot be accurately detected due to the inconsistency between the inner diameter of the original nozzle 51 and the inner diameter of the detection air pipe 46 after plugging, thereby improving the accuracy of air pressure detection, and having the effects of flexible adjustment, rapid pressure measurement, safety protection, accurate detection, reliable structure, convenient operation, and simple and practical use; The mounting frame 1 is configured as an inverted C-shaped plate, and a handle 12 is also installed on the mounting frame 1. The handle 12 allows the operator to hold the device to perform pressure measurement on the nozzle 51, and the controller 11 allows the operator to control the start and stop of electrical equipment in the device, thereby improving the intelligence of the device.

[0031] In one embodiment of the present invention, see Figure 1-Figure 4The pressure measuring assembly 4 includes an upper cover plate 41 arranged at one end of the bracket 3 away from the adjusting assembly 2, a lower cover plate 42 is movably provided on the side of the upper cover plate 41 away from the bracket 3, a detection air pipe 46 is provided between the upper cover plate 41 and the lower cover plate 42, an elastic connection module is provided between the upper cover plate 41 and the lower cover plate 42, a rubber ring 47 is provided on the outer side wall of the end of the detection air pipe 46 away from the bracket 3, a ring groove 471 is provided on the side of the rubber ring 47 away from the bracket 3, an air guide hole 472 connected to the ring groove 471 is provided on the rubber ring 47, an air pump 49 is installed on the upper cover plate 41, an air guide pipe 48 is connected between the air pump 49 and the air guide hole 472, the bracket 3 is installed with a connecting plate 410 located at the end of the detection air pipe 46 away from the rubber ring 47, and an air pressure sensor 411 extending into the interior of the end of the detection air pipe 46 away from the rubber ring 47 is provided on the connecting plate 410; The elastic connection module includes a side ear 411 symmetrically arranged at both ends of the upper cover plate 41 and a side ear 421 symmetrically arranged at both ends of the lower cover plate 42, a plurality of vertical rods 43 are slidably arranged on the side ear 411, one end of the vertical rod 43 is connected to the side ear 421, and the other ends of the plurality of vertical rods 43 are connected through a baffle 44, and a spring 45 sleeved on the outside of the vertical rod 43 is connected between the baffle 44 and the side ear 411.

[0032] In this embodiment, in the initial state, the side ear 1 411 and the side ear 2 421 are in contact with each other, and the spring 1 45 is at its original length. According to the different calibers of the nozzles 51 of different models of air jet looms, the detection air pipe 46 corresponding to the caliber of the nozzle 51 is selected to push the baffle plate 44 downward. The baffle plate 44 drives the vertical rod 43 to move downward synchronously to push the side ear 2 421 away from the side ear 1 411, thereby expanding the distance between the upper cover plate 41 and the lower cover plate 42. The spring 1 45 is stressed and contracts, and one end of the selected detection air pipe 46 is placed between the upper cover plate 41 and the lower cover plate 42, so that the air pressure sensor 412 extends into the detection air pipe 46. Inside one end of the air pipe 46, the baffle 44 is released, and the spring 45 extends upward and pushes the baffle 44 to move upward. The baffle 44 drives the lower cover plate 42 to move upward by driving the vertical rod 43 to move synchronously. The lower cover plate 42 clamps the detection air pipe 46 by cooperating with the upper cover plate 41, thereby realizing the positioning operation of the detection air pipe 46. In addition, a rubber layer can be provided on the inner wall of the side where the upper cover plate 41 and the lower cover plate 42 are close to each other. The rubber layer is attached to the outer wall of the detection air pipe 46, so that the positioning effect of the detection air pipe 46 can be improved, and the detection air pipe 46 can be prevented from slipping during use. The end of the air guide tube 48 away from the air pump 49 is connected to the air guide hole 472. The staff holds the handle 12 and aligns the end of the detection air tube 46 close to the rubber ring 47 with the nozzle 51. The rubber ring 47 fits the air outlet plate 5, so that an annular closed cavity is formed between the air guide hole 472 and the outer wall of the air outlet plate 5. The air pump 49 is powered on and works. The air pump 49 extracts the air in the closed cavity by connecting the air guide tube 48 and the air guide hole 472, so that the air pressure in the closed cavity is reduced. Under the action of atmospheric pressure, the rubber ring 47 will be tightly attached to the air outlet plate 5, which can ensure the correspondence between the nozzle 51 and the detection air tube 46. The airflow ejected from the nozzle 51 will stably pass through the detection air pipe 46 and contact the air pressure sensor 412, thereby realizing non-destructive and accurate pressure measurement of the nozzle 51, avoiding damage to the inner wall of the nozzle 51 caused by frequent plugging in the existing pressure measurement process. At the same time, it also avoids the disadvantage that the outer diameter of the existing detection air pipe 46 is smaller than the inner diameter of the nozzle 51 and cannot accurately measure the pressure. Because when the gas passes through the small hole from the large hole, due to the increase in flow rate and the decrease in flow rate, the gas pressure at the small hole is usually lower than the gas pressure at the large hole. Therefore, when the outer diameter of the detection air pipe 46 is smaller than the inner diameter of the nozzle 51, the air pressure value detected at the detection air pipe 46 is lower than the actual air pressure value of the nozzle 51, which will cause the problem of inaccurate pressure measurement and affect subsequent processing; After the pressure measurement is completed, the air pump 49 inflates the air into the sealed cavity by connecting the air pipe 48 and the air hole 472, so that the air pressure in the sealed cavity increases. When the air pressure in the sealed cavity is equal to or greater than the atmospheric pressure, the rubber ring 47 and the air outlet plate 5 can be released from the contact, and the pressure measuring component 4 and the nozzle 51 can be separated, so that the pressure measuring component 4 can perform air pressure detection on other nozzles 51. The size of the upper cover plate 41 is consistent with that of the lower cover plate 42 , so that the outer wall of the detection air pipe 46 can be stably clamped. There are at least four vertical poles 43 symmetrically distributed at both ends of the upper cover plate 41 .

[0033] In one embodiment of the present invention, see Figure 1-Figure 9The adjusting assembly 2 includes a rotating cylinder 24 rotatably arranged on the inner side of the mounting frame 1, a bevel gear ring 23 is arranged on the outer side of one end of the rotating cylinder 24, a bevel gear 22 meshing with the bevel gear ring 23 is rotatably connected to the inner side of the mounting frame 1, and the bevel gear 22 is connected to the motor 21 installed on the mounting frame 1, and a slot 241 is arranged on the side of the rotating cylinder 24 away from the mounting frame 1, and a limiting slide groove 243 is arranged in the middle of the inner side wall of the slot 241, and two spiral grooves 242 are spirally arranged on the inner side wall of the rotating cylinder 24, and the two spiral grooves 242 are symmetrically distributed about the limiting slide groove 243, and a guide rod 25 arranged inside the rotating cylinder 24 is rotatably arranged on the inner side of the mounting frame 1, and the guide rod 25 is arranged inside the rotating cylinder 24. A guide rod 25 adjustment assembly 2 is provided on the guide rod 25, and movable cylinders 26 are symmetrically provided at both ends of the guide rod 25. The movable cylinder 26 is slidably matched with the guide rod 25 adjustment assembly 2, and a sliding column 261 slidably matched with the spiral groove 242 is provided on the movable cylinder 26. A movable cylinder 27 slidably matched with the guide rod 25 adjustment assembly 2 is provided in the middle of the guide rod 25, and a sliding column 271 slidably matched with the limiting sliding groove 243 is provided on the movable cylinder 27. Two movable cylinders 26 and one movable cylinder 27 are respectively connected to the corresponding bracket 3, and the bracket 3 is located on the side of the movable cylinder 26 away from the sliding column 261 and on the side of the movable cylinder 27 away from the sliding column 271; The switching assembly 6 includes an inner gear ring 61 arranged on the inner side of one end of the rotating cylinder 24 and a gear groove 62 arranged on the inner side of one end of the mounting frame 1, an electromagnet 1 63 is arranged in the gear groove 62, a guide slide groove 2 65 is arranged at one end of the guide rod 25 close to the gear groove 62, a sliding rod 66 is slidably arranged in the guide slide groove 2 65, an electromagnet 2 67 corresponding to the electromagnet 1 63 is installed at one end of the sliding rod 66 close to the gear groove 62, a spring 2 64 is arranged between the gear groove 62 and the sliding rod 66, and an outer gear ring 68 engaged with the inner gear ring 61 or the gear groove 62 is connected to one end of the sliding rod 66 close to the gear groove 62.

[0034] In this embodiment, in the initial state, the spring 2 64 is in a first-stage contraction state, the outer gear ring 68 is engaged with the inner gear ring 61 but not with the gear groove 62, the electromagnet 1 63 and the electromagnet 2 67 are not energized and are away from each other, at this time, the rotating cylinder 24 and the guide rod 25 rotate synchronously, when it is necessary to perform pressure measurement operation on the nozzles 51 at different positions, the motor 21 drives the bevel gear 22 to rotate, the bevel gear 22 drives the rotating cylinder 24 to rotate a certain angle by meshing with the bevel gear ring 23 and the rotating cylinder 24 and the mounting frame 1. The rotating cylinder 24 drives the guide rod 25 to rotate synchronously by the engagement of the outer gear ring 68 with the inner gear ring 61 and the sliding cooperation of the guide groove 2 65 and the sliding rod 66. The rotating cylinder 24 drives the movable cylinder 1 26 and the movable cylinder 2 27 to rotate synchronously by cooperating with the guide rod 25. The movable cylinder 1 26 and the movable cylinder 2 27 adjust the angle of the pressure measuring assembly 4 by driving the bracket 3 to rotate synchronously, so as to meet the pressure measurement requirements of the nozzles 51 at different positions; At the same time, since the spacing between the nozzles 51 of different models of air jet looms is not exactly the same, when measuring the pressure of the nozzles 51 of different models of air jet looms, it is necessary to adaptively adjust the spacing between adjacent pressure measuring components 4, and energize the electromagnet 1 63 and the electromagnet 2 67. The electromagnet 1 63 drives the sliding rod 66 to approach the gear groove 62 by approaching the electromagnet 2 67. The spring 2 64 is stressed and contracts, so that the spring 2 64 is in a secondary contraction state, and the sliding rod 66 drives the electromagnet 2 67 to move synchronously, releasing the engagement between the electromagnet 2 67 and the inner gear ring 61, and realizing the engagement between the electromagnet 2 67 and the gear groove 62, thereby realizing the fixing of the angle of the guide rod 25 and releasing the synchronous rotation between the rotating cylinder 24 and the guide rod 25. The motor 21 drives the bevel gear 22 to rotate forward, and the bevel gear 22 drives the rotating cylinder 24 to rotate clockwise by meshing with the bevel gear ring 23. The rotating cylinder 24 drives the movable cylinder 1 26 to approach the movable cylinder 2 27 by sliding cooperation between the slot 241 and the slide column 1 261 and the movable cylinder 1 26 and the guide slide groove 1 251, which can drive the adjacent brackets 3 to approach each other, realize the reduction of the distance between the two adjacent pressure measuring components 4, and meet the pressure measurement requirements of the nozzles 51 with smaller distances. The motor 21 drives the bevel gear 22 to rotate in the opposite direction, and the bevel gear 22 drives the rotating cylinder 24 to rotate counterclockwise by meshing with the bevel gear ring 23. The rotating cylinder 24 drives the movable cylinder 1 26 away from the movable cylinder 2 27 by sliding cooperation between the slot 241 and the slide column 1 261 and the movable cylinder 1 26 and the guide slide groove 1 251, which can drive the adjacent brackets 3 to move away from each other, realize the expansion of the distance between the two adjacent pressure measuring components 4, and meet the pressure measurement requirements of the nozzles 51 with a larger distance. By controlling the engagement between the outer gear ring 68 and the inner gear ring 61, the synchronous rotation between the rotating cylinder 24 and the guide rod 25 can be achieved, which is convenient for synchronously adjusting the angles of the three pressure measuring assemblies 4 to meet the pressure measuring requirements of the nozzles 51 at different positions. By controlling the engagement between the outer gear ring 68 and the gear groove 62, the angle of the guide rod 25 can be fixed, which is convenient for adjusting the spacing between adjacent pressure measuring assemblies 4 to meet the pressure measuring requirements of the nozzles 51 at different spacings of different models of air jet looms. Among them, the number of teeth of the bevel gear 22 is less than the number of teeth of the bevel gear ring 23, and the length of the sliding rod 66 is greater than the thickness of the outer gear ring 68, which can ensure that during the engagement of the outer gear ring 68 with the inner gear ring 61 or the gear groove 62, the sliding rod 66 always slides with the guide rod 25, the helix angle of the spiral groove 242 is set to 30°-150° of the bracket, and the rotation axis of the limiting slide groove 243 is colinear with the rotation axis of the rotating cylinder 24.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air pressure detection device for an air jet loom, comprising a mounting frame (1), characterized in that: The bottom of the mounting frame (1) is movably provided with three brackets (3) equidistantly arranged thereon; the mounting frame (1) is movably provided with adjustment components (2) respectively connected to the three brackets (3); a switching component (6) is provided between the mounting frame (1) and the adjustment component (2); a pressure measuring component (4) is provided at one end of the bracket (3) away from the adjustment component (2); the pressure measuring component (4) corresponds to a nozzle (51) arranged on the air outlet plate (5); and the mounting frame (1) is provided with a controller (11) electrically connected to electrical equipment in the device; The pressure measuring assembly (4) comprises an upper cover plate (41) arranged at one end of the bracket (3) away from the adjusting assembly (2); a lower cover plate (42) is movably provided on the side of the upper cover plate (41) away from the bracket (3); a detection air pipe (46) is provided between the upper cover plate (41) and the lower cover plate (42); an elastic connection module is provided between the upper cover plate (41) and the lower cover plate (42); a rubber ring (47) is provided on the outer side wall of the end of the detection air pipe (46) away from the bracket (3); and a rubber ring (47) is provided on the side of the rubber ring (47) away from the bracket (3). The rubber ring (47) is provided with an annular groove (471), and an air guide hole (472) connected to the annular groove (471) is provided on the rubber ring (47). An air pump (49) is installed on the upper cover plate (41), and an air guide pipe (48) is connected between the air pump (49) and the air guide hole (472). The bracket (3) is provided with a connecting plate (410) located at the end of the detection air pipe (46) away from the rubber ring (47), and an air pressure sensor (412) is provided on the connecting plate (410) and extends into the interior of the end of the detection air pipe (46) away from the rubber ring (47).

2. The air pressure detection device for an air jet loom according to claim 1, characterized in that: The elastic connection module comprises a side ear (411) symmetrically arranged at both ends of the upper cover plate (41) and a side ear (421) symmetrically arranged at both ends of the lower cover plate (42); a plurality of vertical rods (43) are slidably arranged on the side ear (411); one end of the vertical rod (43) is connected to the side ear (421); the other ends of the plurality of vertical rods (43) are connected via a baffle (44); a spring (45) sleeved on the outside of the vertical rod (43) is connected between the baffle (44) and the side ear (411).

3. The air pressure detection device for an air jet loom according to claim 1, characterized in that: The adjustment assembly (2) comprises a rotating cylinder (24) rotatably arranged on the inner side of the mounting frame (1), a bevel gear ring (23) is arranged on the outer side of one end of the rotating cylinder (24), a bevel gear (22) meshing with the bevel gear ring (23) is rotatably connected to the inner side of the mounting frame (1), the bevel gear (22) is connected to a motor (21) mounted on the mounting frame (1), a slot (241) is arranged on the side of the rotating cylinder (24) away from the mounting frame (1), a limiting slide groove (243) is arranged in the middle of the inner side wall of the slot (241), two spiral grooves (242) are spirally arranged on the inner side wall of the rotating cylinder (24), and the two spiral grooves (242) are symmetrically distributed with respect to the limiting slide groove (243), a guide rod (25) arranged inside the rotating cylinder (24) is rotatably arranged on the inner side of the mounting frame (1), and the guide rod (25) is arranged inside the rotating cylinder (24) 5) is provided with a guide rod (25) adjustment assembly (2), and movable cylinders (26) are symmetrically provided at both ends of the guide rod (25), and the movable cylinder (26) is slidably matched with the guide rod (25) adjustment assembly (2), and a sliding column (261) slidably matched with the spiral groove (242) is provided on the movable cylinder (26), and a movable cylinder (27) slidably matched with the guide rod (25) adjustment assembly (2) is provided in the middle of the guide rod (25), and a sliding column (271) slidably matched with the limiting sliding groove (243) is provided on the movable cylinder (27), and two movable cylinders (26) and one movable cylinder (27) are respectively connected to the corresponding bracket (3), and the bracket (3) is located on the side of the movable cylinder (26) away from the sliding column (261) and on the side of the movable cylinder (27) away from the sliding column (271).

4. The air pressure detection device for an air jet loom according to claim 3, characterized in that: The switching assembly (6) comprises an inner gear ring (61) arranged on the inner side of one end of the rotating cylinder (24) and a gear groove (62) arranged on the inner side of one end of the mounting frame (1); an electromagnet 1 (63) is arranged in the gear groove (62); a guide slide groove 2 (65) is arranged at one end of the guide rod (25) close to the gear groove (62); a sliding rod (66) is slidably arranged in the guide slide groove 2 (65); an electromagnet 2 (67) corresponding to the electromagnet 1 (63) is installed at one end of the sliding rod (66) close to the gear groove (62); a spring 2 (64) is arranged between the gear groove (62) and the sliding rod (66); and an outer gear ring (68) engaged with the inner gear ring (61) or the gear groove (62) is connected to one end of the sliding rod (66) close to the gear groove (62).

5. The air pressure detection device for an air jet loom according to claim 1, characterized in that: The mounting frame (1) is configured as an inverted C-shaped plate, and a handle (12) is also mounted on the mounting frame (1).

6. The air pressure detection device for an air jet loom according to claim 1, characterized in that: The size of the upper cover plate (41) is consistent with the size of the lower cover plate (42).

7. The air pressure detection device for an air jet loom according to claim 4, characterized in that: The length of the sliding rod (66) is greater than the thickness of the outer gear ring (68).

8. The air pressure detection device for an air jet loom according to claim 4, characterized in that: The helical angle of the helical groove (242) is set to be 30°-150°.

9. The air pressure detection device for an air jet loom according to claim 4, characterized in that: The rotation axis of the limiting sliding groove (243) is colinear with the rotation axis of the rotating cylinder (24).

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