A valve sleeve on-line detection device

Abstract

This invention relates to the field of valve sleeve inspection technology, specifically to an online valve sleeve inspection device. The device includes an inspection support, a conveying mechanism, an inspection bracket, an inspection head mechanism, a transverse floating mechanism, a positioning and feeding mechanism, and a side-sliding mechanism. The inspection head mechanism internally features a stepped plunger and a double-segment inclined wedge block, along with four sets of cross-shaped inspection sliders. The stepped plunger structure allows for the step-by-step expansion of the two sets of inspection sliders, enabling air pressure testing of both small and large orifices of the valve sleeve. This achieves dual-size inspection of stepped orifices on a single device. The device employs an outward-expanding, contact inspection structure, with the inspection sliders contacting the workpiece from the inside out, reducing frictional loss and preventing back pressure drop due to wear and leakage of the inspection head, thus ensuring long-term stability of the inspection benchmark. Simultaneously, a multi-positioning correction structure, in conjunction with the transverse floating mechanism, the side-sliding mechanism, and the internal centering structure, effectively compensates for assembly deviations, ensuring high-precision coaxiality between the inspection head and the valve sleeve.

Description

Technical Field

[0001] This invention relates to the field of valve sleeve testing technology, and in particular to an online valve sleeve testing device. Background Technology

[0002] As a core precision component inside hydraulic and pneumatic valve bodies, the valve sleeve's inner bore dimensional accuracy, roundness, and coaxiality directly determine the valve body's sealing performance and smooth operation, making it a key testing indicator for the quality control of hydraulic valve products. Currently, the industry mostly uses manual handheld measuring instruments for sampling inspection and fixed single-hole diameter testing fixtures for valve sleeve inner diameter testing. These existing testing methods have many shortcomings in actual production applications. First, traditional testing equipment has a simple structure and can mostly only test a single aperture specification. It is difficult to adapt to the need for testing stepped inner and outer dual apertures in valve sleeve processing, resulting in poor versatility and limited testing range. Second, existing testing fixtures have low positioning accuracy during valve sleeve feeding and clamping, and the valve sleeve is prone to tilting, offset, and circumferential angle deviation. The coaxiality between the testing head and the valve sleeve is difficult to guarantee, which can easily lead to testing wear, large deviations in testing data, and poor testing stability. Existing testing equipment mostly adopts a fixed rigid bonding testing structure. During the testing process, the testing surface is in long-term contact with the inner wall of the valve sleeve and slides and rubs, resulting in rapid wear of the testing head. Friction loss will lead to a decrease in the sealing performance of the testing surface, directly causing back pressure deviation and data drift. With long-term use, the testing accuracy will be greatly reduced, and the equipment will require frequent calibration and maintenance. Therefore, an online valve sleeve testing device is designed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by adopting an outward-expanding detection structure to achieve continuous detection of stepped holes with a single clamping. At the same time, the detection slider slowly conforms to the inner wall of the valve sleeve from the inside out, abandoning the traditional sliding friction contact method, significantly reducing frictional loss between the detection surface and the inner wall of the valve sleeve, and avoiding the problems of sealing failure and back pressure drop caused by long-term wear of the detection head.

[0004] To address the above technical issues, the following technical solution is adopted: An online valve sleeve inspection device includes an inspection support and an inspection head mechanism mounted on the inspection support. The inspection head mechanism includes a positioning component A, sector blocks mounted on the positioning component A, and inspection components B mounted between the sector blocks. The detection component B includes a detection slider that is slidably installed between two adjacent sector blocks, a wedge block fixed inside the detection slider, and a plunger arranged along the central axis of the sector blocks, with the plunger acting on the inner surface of the wedge block. The plunger is configured as a two-stage stepped structure, wherein the diameter of the upper part of the plunger is larger than the diameter of the lower part, and the inclined surface of the wedge block is also stepped and divided into two sections. The opposing detection sliders on both sides are of the same size, and the two sets of detection sliders are used for detecting different inner diameters. The positioning component A further includes a sliding hole on the bottom side of the sector block and distributed at equal angles along the outer circumference, a telescopic rod slidably disposed in the sliding hole, and a rolling ball embedded in the ball groove at the end of the telescopic rod. The telescopic movement direction of the telescopic rod is consistent with the telescopic movement direction of the sector block.

[0005] When inspecting the inner diameter of the valve sleeve, a barometer is used for measurement. During the measurement process, the positioning component A in the detection head mechanism is inserted into the valve sleeve. Through the extension and expansion of the telescopic rod, the rolling ball contacts the inner wall of the valve sleeve. With the cooperation of multiple telescopic rods, the centering operation of the valve sleeve can be achieved. After the centering operation is completed, the plunger moves downward. The plunger is set with a two-stage stepped structure, where the diameter of the upper part of the plunger is larger than that of the lower part. The inclined surface of the wedge block is also stepped and divided into two sections. There are four detection sliders arranged in a cross direction, with the two opposing detection sliders used for detecting different inner diameters. During testing, when testing small orifices, the cylinder is pressed to push the plunger downwards. At the bottom of the plunger, it operates along the inclined surface of the bottom of the wedge block. As the plunger slides down, it acts on the inclined surfaces of the two wedge blocks, causing the first set of testing sliders to slide outwards. When the bottom of the plunger moves to the vertical section at the bottom of the wedge block, it indicates that the first set of testing sliders has moved to the minimum acceptable value range for small orifices. Air is then introduced into the testing orifice through the air pipe connected to the testing instrument. The pressure is then determined based on the feedback pressure from the testing instrument to determine whether the pressure is within the acceptable range for production.

[0006] During the large-diameter inspection, the piston is pushed downward by the continued operation of the pressing cylinder. At the top stage of the piston, it operates along the top inclined surface of the wedge block. As the piston continues to slide down, it acts on the inclined surface of the two wedge blocks, causing the second set of detection sliders to slide outward. When the piston slides to the middle vertical section of the wedge block at the top vertical stage, it indicates that the second detection slider has moved to the minimum acceptable value range of the large-diameter. Air is then introduced into the detection port through the air pipe connected to the detector, and the pressure is determined based on the feedback pressure of the detector to determine whether the pressure is within the acceptable range of production. The curvature of the two sets of detection sliders corresponds to the corresponding detection inner hole.

[0007] Preferably, the detection component B further includes a detection air hole opened inside the detection slider and with its bottom port located on the detection surface of the detection slider, a first positioning plate disposed above the sector block, a pressing cylinder installed at the bottom center of the first positioning plate, an overpressure sensor installed between the output end of the pressing cylinder and the plunger, and an air pipe connected to the top of the detection air hole, wherein the air pipe is used to connect the detection air hole and the detector.

[0008] Preferably, the positioning component A further includes a servo motor installed in the bottom groove of the support plate, a rotary disk installed on the output shaft of the servo motor, a guide slide rod fixed at an equal angle to the bottom side of the rotary disk, and a support ring fixed to the bottom side of the support plate; The bottom end of the guide slide rod is located inside the telescopic sliding hole opened at one end of the telescopic rod.

[0009] Preferably, the detection head mechanism further includes a reset component C, which includes a guide rod installed in the slide grooves on both sides of the sector block, a movable plate slidably installed on the guide rod and laterally fixed to the detection slider, and a third spring fixed between the limiting groove and the movable plate.

[0010] Preferably, it also includes a detection bracket installed on the top side of the detection support, a telescopic pneumatic cylinder installed on the top of the detection bracket, and a lateral floating mechanism assembled at the bottom telescopic end of the telescopic pneumatic cylinder. The lateral floating mechanism includes a limiting ring installed at the end of the telescopic rod of the telescopic pneumatic cylinder and having swing holes opened at equal angles along the circumferential surface, a movable sleeve rotatably installed in the swing holes, and a torsion bar movably inserted inside the movable sleeve.

[0011] Preferably, the lateral floating mechanism further includes a sliding disk suspended at the center of the limiting ring, a swing seat mounted at equal angles on the circumferential side of the limiting ring, a limiting cap mounted at one end of the torsion bar, a second spring clamped between the limiting cap and the end face of the movable sleeve, and a connecting rod mounted on the bottom side of the sliding disk. The other end of the torsion bar is hinged inside the swing seat.

[0012] Preferably, it further includes a positioning and feeding mechanism disposed below the detection head mechanism. The positioning and feeding mechanism includes a feeding plate rotatably mounted on the top side of the detection support via a rotating shaft, movable slots opened at the rotating end of the feeding plate and distributed at equal included angles, a positioning slide rod installed in the movable slot, a movable block symmetrically slidably mounted on the positioning slide rod, a first spring fixed between the movable block and the movable slot, grippers symmetrically mounted on the movable block, a guide block mounted on the bottom side of the movable block in an inverted V-shape, and a drive motor mounted on the bottom side of the detection support and whose output shaft is drively connected to the bottom side of the feeding plate.

[0013] Preferably, it also includes a lifting cylinder installed on the bottom side of the detection support and an upward buckle assembled at the end of the extension rod of the lifting cylinder, wherein the two ends of the upward buckle act on the bottom of the two guide blocks.

[0014] Preferably, it also includes a side sliding mechanism installed on the bottom side of the detection bracket. The side sliding mechanism includes a side sliding push plate installed on the outer side of the bottom of the detection bracket. A side sliding cylinder is installed at the output end of the side sliding push plate. The side sliding cylinder is set for the detection position of the valve sleeve. A friction pad is provided on the inner side of the side sliding cylinder. Preferably, it also includes a detector installed on the side of the middle part of the detection bracket. The detector is connected to the two sets of detection sliders through air pipes, and the detector is connected to the same detection air source.

[0015] Preferably, a first conveyor belt and a second conveyor belt are symmetrically installed on both sides of the detection support, and a gripper robot is provided on the sides of the first conveyor belt and the second conveyor belt.

[0016] The beneficial effects of this invention are: (1) The detection head mechanism of this case is equipped with a stepped plunger and a double-section inclined wedge block, and two sets of cross-shaped detection sliders. The upper and lower stepped structures of the plunger control the outward expansion movement of the two sets of detection sliders respectively, which can sequentially complete the step-by-step air pressure detection of the small orifice and the large orifice of the valve sleeve, realize the dual-size detection of the inner hole of the stepped valve sleeve by a single device, and avoid the single orifice detection mode.

[0017] (2) This device is equipped with a positioning and correction structure. The drive motor drives the feeding plate to feed intermittently. The lifting cylinder and the floating buckle are used to achieve the clamping and fixing of the clamp, thus completing the vertical positioning of the valve sleeve. The side sliding mechanism can rub to correct the circumferential angle of the valve sleeve, ensuring that the bottom surface of the valve sleeve is flat. At the same time, a horizontal floating mechanism is set up. The torsion bar, spring and sliding plate are used to achieve the horizontal adaptive offset of the detection head to compensate for mechanical assembly errors. Then, the telescopic rod is controlled to expand outward by the servo motor, and the rolling ball supports multiple points to complete the internal centering. (3) This device adopts an outward expansion detection structure. The detection slider slowly fits the inner wall of the valve sleeve from the inside to the outside. The detection slider has no relative sliding friction and only radial outward expansion fits, which reduces the wear of the detection slider, thereby reducing the friction loss between the detection surface and the inner wall of the valve sleeve. This avoids the problem of reduced back pressure and drift in detection accuracy caused by air leakage due to wear of the detection surface, and ensures that the detection head and the valve sleeve are coaxial with high precision and the detection data is accurate and stable. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the first three-dimensional structure of the valve sleeve online detection device.

[0020] Figure 2 This is a schematic diagram of the second three-dimensional structure of the valve sleeve online detection device.

[0021] Figure 3 This is a schematic diagram of the overall sectional structure.

[0022] Figure 4 for Figure 3 A schematic diagram of the structure of region D.

[0023] Figure 5 This is a schematic diagram of the detection head mechanism.

[0024] Figure 6 This is a schematic diagram of a horizontal floating mechanism.

[0025] Figure 7 This is a cross-sectional structural diagram of the detection head mechanism.

[0026] Figure 8 This is a schematic diagram of the main structure of the detection head mechanism.

[0027] Figure 9 This is a schematic diagram of the positioning component A.

[0028] Figure 10 This is a schematic diagram of the reset component C of the detection head mechanism. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1 like Figure 1-9 As shown, an online valve sleeve inspection device includes an inspection support 1 and an inspection head mechanism 8 mounted on the inspection support 1. The inspection head mechanism 8 includes a positioning component A, a sector block 808 mounted on the positioning component A, and an inspection component B mounted between the sector blocks 808. The detection component B includes a detection slider 807 slidably mounted between two adjacent sector blocks 808, a wedge block 809 fixed inside the detection slider 807, and a plunger 804 arranged along the central axis of the sector blocks 808, with the plunger 804 acting on the inner surface of the wedge block 809. The plunger 804 is configured as a two-stage stepped structure, wherein the diameter of the upper part of the plunger 804 is larger than the diameter of the lower part, and the inclined surface of the wedge block 809 is also stepped and divided into two sections. There are four detection sliders 807 arranged in a cross direction, and the two opposing detection sliders 807 are used for detecting different inner diameter sizes. The positioning component A further includes a sliding hole on the bottom side of the sector block 808 and distributed at equal angles along the outer circumference, a telescopic rod 814 slidably disposed in the sliding hole, and a rolling ball 817 rolled and embedded in the ball groove at the end of the telescopic rod 814. The telescopic movement direction of the telescopic rod 814 is consistent with the telescopic movement direction of the sector block 808.

[0031] When inspecting the inner diameter of the valve sleeve, a barometer is used for measurement. During the measurement process, the positioning component A in the detection head mechanism 8 is inserted into the valve sleeve. Through the extension and expansion of the telescopic rod 814, the rolling ball 817 contacts the inner wall of the valve sleeve. With the cooperation of multiple telescopic rods 814, the centering operation of the valve sleeve can be achieved. After the centering operation is completed, the plunger 804 moves downward. The plunger 804 is set with a two-stage stepped structure, where the diameter of the upper part of the plunger 804 is larger than the diameter of the lower part. The inclined surface of the wedge block 809 is also stepped and divided into two sections. There are four detection sliders 807 arranged in a cross direction, divided into two groups. One group of detection sliders 807 is used for detecting the same inner diameter size. During testing, when testing small orifices, the cylinder 802 is pressed to push the plunger 804 downward. At the bottom of the plunger 804, it operates along the bottom inclined surface of the wedge block 809. As the plunger 804 slides down, it acts on the inclined surface of the two wedge blocks 809, causing the first set of detection sliders 807 to slide outward. When the bottom of the plunger 804 moves to the bottom vertical section of the wedge block 809, it indicates that the first set of detection sliders 807 has moved to the minimum acceptable value range for small orifices. Air is then introduced into the detection air hole 805 through the air pipe 806 connected to the detector. The pressure is then determined based on the feedback pressure from the detector to determine whether the pressure is within the acceptable range for production.

[0032] During the large-diameter inspection, the continuous operation of the pressing cylinder 802 pushes the plunger 804 to continue moving downwards. At the top stage of the plunger 804, it operates along the top inclined surface of the wedge block 809. As the plunger 804 continues to slide down, it acts on the inclined surfaces of the two wedge blocks 809, causing the second set of detection sliders 807 to slide outwards. When the plunger 804 slides to the middle vertical section of the wedge block 809 at the top vertical stage, it indicates that the second detection slider 807 has moved to the minimum acceptable value range for the large-diameter. Air is then introduced into the detection air hole 805 through the air pipe 806 connected to the detector. The pressure is determined based on the feedback pressure from the detector to determine whether the pressure is within the acceptable range of production. The curvature of the two sets of detection sliders 807 corresponds to the corresponding detection inner hole.

[0033] The detection structure adopts an outward expansion type. The detection slider 807 slowly fits against the inner wall of the valve sleeve from the inside out. The detection slider 807 has no relative sliding friction and only performs radial outward expansion, which reduces the wear of the detection slider 807. This reduces the friction loss between the detection surface and the inner wall of the valve sleeve, avoids the problem of reduced back pressure and drift in detection accuracy caused by air leakage due to wear of the detection surface, and ensures high-precision coaxiality between the detection head and the valve sleeve and accurate and stable detection data.

[0034] like Figure 5 , Figure 7 As shown, the detection component B further includes a detection air hole 805 opened inside the detection slider 807 and with its bottom port located on the detection surface of the detection slider 807, a first positioning plate 801 disposed above the sector block 808, a pressing cylinder 802 installed at the bottom center of the first positioning plate 801, an overpressure sensor 803 installed between the output end of the pressing cylinder 802 and the plunger 804, and an air pipe 806 connected to the top of the detection air hole 805. The air pipe 806 is used to connect the detection air hole 805 to the detector 14. During the detection process, the back pressure of the detector 14 determines whether the detection dimension is qualified.

[0035] In detail, during the detection process, after the first positioning plate 801 moves downward, an overpressure sensor 803 is set between the pressing cylinder 802 and the plunger 804. When the detection aperture is smaller than the maximum outward expansion range of the detection slider 807, the vertical section of the plunger 804 cannot slide into the vertical section of the corresponding wedge block 809. Under the continuous operation of the pressing cylinder 802, the overpressure sensor 803 will be triggered, and the generated feedback signal can be fed back through the control terminal. An overpressure sensor 803 is provided between the pressing cylinder 802 and the plunger 804. When the detection orifice is smaller than the maximum outward expansion range of the detection slider 807, the vertical section of the plunger 804 cannot slide into the vertical section of the corresponding wedge block 809. Under the continuous pressurization operation of the pressing cylinder 802, the overload pressure will trigger the overpressure sensor 803. The generated feedback signal can be fed back through the control terminal. When the valve sleeve orifice is too small, timely detection and feedback can be obtained to avoid secondary damage to the detection head mechanism 8 and the valve sleeve. Products that fail the inspection are removed by robots on the inspection production line to prevent them from being mixed with qualified valve sleeves.

[0036] like Figure 1 As shown, the positioning component A further includes a servo motor 818 installed in the bottom groove of the support plate 811, a rotary disk 813 installed on the output shaft of the servo motor 818, a guide slide rod 816 fixed at an equal angle to the bottom side of the rotary disk 813, and a support ring 812 fixed to the bottom side of the support plate 811. The bottom end of the guide slide rod 816 is located inside the telescopic slide hole 815 opened at one end of the telescopic rod 814.

[0037] In detail, during center positioning, the servo motor 818 rotates forward or backward, driving the rotating disk 813 to rotate. Simultaneously, the guide slide rod 816 located at the bottom of the rotating disk 813 rotates synchronously. During the sliding operation of the guide slide rod 816 along the telescopic slide hole 815, the telescopic rod 814 expands or contracts synchronously. During the expansion of the telescopic rod 814, when the external rolling ball 817 contacts the inside of the valve sleeve, the detection component B is coaxially positioned with the valve sleeve.

[0038] like Figure 10 As shown, the detection head mechanism 8 further includes a reset component C, which includes a guide rod 822 installed in the sliding grooves on both sides of the sector block 808, a movable plate 824 slidably installed on the guide rod 822 and side-fixed to the detection slider 807, and a third spring 823 fixed between the limiting groove 821 and the movable plate 824. In detail, when the detection slider 807 expands outward, the third spring 823 is in a gradually stretched state. After the detection slider 807 expands outward, when the plunger 804 no longer exerts a downward pressure on the wedge block 809, the third spring 823 can cause the detection slider 807 to retract back to its original position.

[0039] like Figure 6 As shown, it further includes a detection bracket 4 installed on the top side of the detection support 1, a telescopic pneumatic cylinder 5 installed on the top of the detection bracket 4, and a transverse floating mechanism 6 assembled at the bottom telescopic end of the telescopic pneumatic cylinder 5. The transverse floating mechanism 6 includes a limiting ring 61 installed at the end of the telescopic rod of the telescopic pneumatic cylinder 5 and having a swing hole 65 opened at an angle along the circumferential surface, a movable sleeve 64 rotatably installed in the swing hole 65, and a torsion bar 69 movably inserted inside the movable sleeve 64.

[0040] In detail, to ensure that the detection head mechanism 8 can better monitor the valve sleeve, during the insertion process of the detection head mechanism 8 into the valve sleeve, the influence of the detection head mechanism 8 on the valve sleeve offset monitoring is reduced, ensuring that the detection head mechanism 8 can operate along the valve sleeve axis, thereby ensuring the fit between the outer side of the detection slider 807 and the inner wall of the valve sleeve, and accurately determining whether the detection dimension is qualified by back pressure. A sliding disk 67 that can slide laterally is provided at the top of the connecting rod 68. After the detection head mechanism 8 achieves the center positioning of the valve sleeve, if it is not concentric with the telescopic pneumatic cylinder 5, the horizontal movement of the sliding disk 67 is achieved under the lateral constraint of the torsion bar 69, without affecting the center positioning of the vertically inserted detection head mechanism 8 and the valve sleeve.

[0041] like Figure 6As shown, the lateral floating mechanism 6 further includes a sliding disk 67 suspended at the center of the limiting ring 61, a swing seat 66 installed at equal angles on the circumferential side of the limiting ring 61, a limiting cap 62 installed at one end of the torsion bar 69, a second spring 63 sandwiched between the limiting cap 62 and the end face of the movable sleeve 64, and a connecting rod 68 installed on the bottom side of the sliding disk 67. The other end of the torsion bar 69 is hinged inside the swing seat 66.

[0042] During the operation of the detection head mechanism 8, in order to ensure that the sliding disk 67 and the detection head mechanism 8 are coaxial, when the sliding disk 67 needs to be offset, during the constraint swing in four directions, the movable sleeve 64 can cooperate to twist, which can ensure that the horizontal movement of the sliding disk 67 is not interfered with. Four second springs 63 are respectively set on the four torsion bars 69. After deformation, the sliding disk 67 can be restored to its position according to the stretching, contraction or compression expansion of the second springs 63.

[0043] like Figure 3 , Figure 4 As shown, it further includes a positioning and feeding mechanism 10 disposed below the detection head mechanism 8. The positioning and feeding mechanism 10 includes a feeding plate 101 rotatably mounted on the top side of the detection support 1 via a rotating shaft, a movable groove opened at the rotating end of the feeding plate 101 and distributed at equal angles, a positioning slide rod 105 installed in the movable groove, a movable block 103 symmetrically slidably mounted on the positioning slide rod 105, a first spring 104 fixed between the movable block 103 and the movable groove, a gripper 102 symmetrically mounted on the movable block 103, a guide block 106 mounted on the bottom side of the movable block 103 in an inverted V-shape, and a drive motor 107 mounted on the bottom side of the detection support 1 and whose output shaft is drively connected to the bottom side of the feeding plate 101.

[0044] In detail, during the valve sleeve inspection and clamping process, after the valve sleeve is clamped and placed in the inspection position by the feeding robot, under the constraint of the two grippers 102 corresponding to the clamping position, the valve sleeve placed on the feeding plate 101 can be rotated to below the inspection head mechanism 8 by the intermittent equal angle rotation of the drive motor 107 on the feeding plate 101. Before testing, the lifting cylinder 13 extends to push the floating buckle 11 upward. During the operation of the floating buckle 11 on the guide block 106, the two opposing movable blocks 103 slide relative to each other on the positioning slide rod 105, which drives the two grippers 102 to move relative to each other. This enables the valve sleeve placed between the two grippers 102 to be clamped and fixed. The inner wall of the gripper 102 is a semi-circular structure, which achieves the clamping and positioning operation of the valve sleeve. After the test is completed, the lifting cylinder 13 drives the floating buckle 11 to descend, releasing the force on the guide block 106. Under the contraction force of the first spring 104, the two grippers 102 move away from the valve sleeve, thereby releasing the valve sleeve after the test.

[0045] like Figure 4 As shown, it further includes a lifting cylinder 13 installed on the bottom side of the detection support 1 and an upward buckle 11 assembled at the end of the telescopic rod of the lifting cylinder 13. The two ends of the upward buckle 11 act on the bottom of the two guide blocks 106.

[0046] In detail, as a clamping power structure for the valve sleeve, the floating buckle 11 serves as a positioning motion structure. Under the action of the lifting cylinder 13, it can achieve the effect of acting on the guide block 106 that has rotated to the top of the floating buckle 11, without needing to follow below the guide block 106. like Figure 2 As shown, it further includes a side sliding mechanism 9 installed on the bottom side of the detection bracket 4. The side sliding mechanism 9 includes a side sliding push plate 902 installed on the outer side of the bottom of the detection bracket 4. A side sliding cylinder 901 is installed at the output end of the side sliding push plate 902. The side sliding cylinder 901 is set for the detection position of the valve sleeve. A friction pad is provided on the inner side of the side sliding cylinder 901. In detail, when the valve sleeve is rotated and conveyed to the detection position, the side sliding cylinder 901 is moved by the extension and retraction of the side sliding push plate 902. This causes the side sliding cylinder 901 to move close to the valve sleeve. Under the state of contact friction, the valve sleeve can rotate within the constraint range of the two grippers 102. This can rotate and support the valve sleeve before it is clamped, ensuring that the bottom side of the valve sleeve is in complete contact with the upper surface of the feeding plate 101, so as to better maintain the detection state of the valve sleeve. Meanwhile, during the testing process, the original rotation position of the valve sleeve can be changed by operating the side-sliding cylinder 901, so as to realize multi-point testing of the valve sleeve.

[0047] like Figure 1 As shown, it further includes a detector 14 installed on the side of the middle part of the detection bracket 4. The detector 14 is connected to the two sets of detection sliders 807 through air pipes, and the detector 14 is connected to the same detection air source.

[0048] In detail, during the testing process, after each set of testing sliders 807 extends to contact the inner wall of the valve sleeve, the testing instrument 14 operates autonomously, enabling gas delivery. Based on the generated back pressure data, it determines whether the inner diameter of the valve sleeve is within the qualified range.

[0049] Example 2 like Figure 1-2As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows: Furthermore, a first conveyor belt 2 and a second conveyor belt 3 are symmetrically installed on both sides of the detection support 1, and gripper robots are provided on the sides of the first conveyor belt 2 and the second conveyor belt 3. The first conveyor belt 2 serves as the feeding conveyor line, responsible for continuously and smoothly conveying the valve sleeves to be inspected from the upstream process to the predetermined gripping station next to the inspection support 1; the second conveyor belt 3 serves as the unloading and sorting line, used to receive qualified and unqualified valve sleeves respectively and convey them to the corresponding downstream areas to achieve the separation of good and defective products. The gripper robots on both sides are linked in sequence with the two conveyor belts: when the valve sleeve arrives at the gripping station with the first conveyor belt 2, the sensor triggers the gripper robot to move, accurately grip the valve sleeve and transfer it to the feeding plate 101 of the positioning feeding mechanism 10, completing the automatic feeding; after the inspection is completed, the gripper robot grabs the qualified valve sleeve to the good product channel of the second conveyor belt 3 and the unqualified valve sleeve to the defective product channel according to the judgment signal of the detector 14, realizing automatic sorting and unloading; The first conveyor belt 2 and the second conveyor belt 3 adopt a synchronous start-stop and constant speed conveying control method. Combined with the rapid gripping and delivery actions of the gripper robot, they form a fully automatic closed-loop production line for feeding, detection and sorting. No manual intervention is required throughout the process, which greatly improves the valve sleeve detection efficiency and sorting accuracy, and avoids the bump damage and material mixing problems caused by manual contact.

[0050] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0051] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0052] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An online valve sleeve inspection device, comprising an inspection support, characterized in that: It also includes a detection head mechanism installed on a detection support, the detection head mechanism comprising a positioning component, sector blocks installed on the positioning component, and detection components installed between the sector blocks; The detection assembly includes a detection slider slidably mounted between two adjacent sector blocks, a wedge block fixed inside the detection slider, and a plunger arranged along the central axis of the sector blocks, with the plunger acting on the inner surface of the wedge block. The plunger is configured as a two-stage stepped structure, wherein the diameter of the upper part of the plunger is larger than the diameter of the lower part, and the inclined surface of the wedge block is also stepped and divided into two sections. There are four detection sliders arranged in a cross direction, wherein the detection sliders on opposite sides are of the same size, and the two sets of detection sliders are used for detecting different inner diameter sizes. The positioning component also includes a sliding hole on the bottom side of the sector block and distributed at equal angles along the outer circumference, a telescopic rod slidably disposed in the sliding hole, and a rolling ball embedded in the ball groove at the end of the telescopic rod. The telescopic movement direction of the telescopic rod is consistent with the telescopic movement direction of the sector block.

2. The valve sleeve online detection device according to claim 1, characterized in that: The detection assembly also includes a detection air hole opened inside the detection slider and with its bottom port located on the detection surface of the detection slider, a first positioning plate set above the fan-shaped block, a pressing cylinder installed at the bottom center of the first positioning plate, an overpressure sensor installed between the output end of the pressing cylinder and the plunger, and an air pipe connected to the top of the detection air hole, wherein the air pipe is used to connect the detection air hole and the detector.

3. The valve sleeve online detection device according to claim 1, characterized in that: The positioning assembly also includes a servo motor installed in the bottom groove of the support plate, a rotary disk installed on the output shaft of the servo motor, a guide slide rod fixed at an equal angle to the bottom side of the rotary disk, and a support ring fixed to the bottom side of the support plate. The bottom end of the guide slide rod is located inside the telescopic sliding hole opened at one end of the telescopic rod.

4. The valve sleeve online detection device according to claim 1, characterized in that: The detection head mechanism also includes a reset assembly, which includes guide rods installed in the sliding grooves on both sides of the sector block, a movable plate slidably installed on the guide rods and side-fixed to the detection slider, and a third spring fixed between the limiting groove and the movable plate.

5. The valve sleeve online detection device according to claim 1, characterized in that: It also includes a detection bracket installed on the top side of the detection support, a telescopic pneumatic cylinder installed on the top of the detection bracket, and a lateral floating mechanism assembled at the bottom telescopic end of the telescopic pneumatic cylinder. The lateral floating mechanism includes a limiting ring installed at the end of the telescopic rod of the telescopic pneumatic cylinder and having swing holes opened at equal angles along the circumferential surface, a movable sleeve rotatably installed in the swing holes, and a torsion bar movably inserted inside the movable sleeve. The lateral floating mechanism also includes a sliding disk suspended at the center of the limiting ring, a swing seat installed at equal angles on the circumferential side of the limiting ring, a limiting cap installed at one end of the torsion bar, a second spring clamped between the limiting cap and the end face of the movable sleeve, and a connecting rod installed on the bottom side of the sliding disk. The other end of the torsion bar is hinged inside the swing seat.

6. The valve sleeve online detection device according to claim 1, characterized in that: It also includes a positioning and feeding mechanism located below the detection head mechanism. The positioning and feeding mechanism includes a feeding plate rotatably mounted on the top side of the detection support via a rotating shaft, movable slots opened at the rotating end of the feeding plate and distributed at equal included angles, a positioning slide rod installed in the movable slot, a movable block symmetrically slidably mounted on the positioning slide rod, a first spring fixed between the movable block and the movable slot, grippers symmetrically mounted on the movable block, a guide block mounted on the bottom side of the movable block in an inverted V-shape, and a drive motor mounted on the bottom side of the detection support and whose output shaft is drively connected to the bottom side of the feeding plate.

7. The valve sleeve online detection device according to claim 1, characterized in that: It also includes a lifting cylinder installed on the bottom side of the detection support and an upward buckle assembled at the end of the extension rod of the lifting cylinder, the two ends of which act on the bottom of the two guide blocks.

8. The valve sleeve online detection device according to claim 1, characterized in that: It also includes a side-sliding mechanism installed on the bottom side of the detection bracket. The side-sliding mechanism includes a side-sliding push plate installed on the outer side of the bottom of the detection bracket. A side-sliding cylinder is installed at the output end of the side-sliding push plate. The side-sliding cylinder is set for the detection position of the valve sleeve. A friction pad is provided on the inner side of the side-sliding cylinder.

9. The valve sleeve online detection device according to claim 1, characterized in that: It also includes a detector installed on the side of the middle part of the detection bracket. The detector is connected to the two sets of detection sliders through air pipes, and the detector is connected to the same detection air source.

10. The valve sleeve online detection device according to claim 1, characterized in that: The detection support is symmetrically equipped with a first conveyor belt and a second conveyor belt on both sides, and gripper robots are provided on the sides of the first and second conveyor belts.

Images