Size detection device for air valve
The valve size detection device addresses inefficiencies in existing technologies by using sensors and adjustable components to accurately detect valve stems and grooves, preventing damage and enhancing detection efficiency.
Patent Information
- Application Number
- CN202411605232.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-01-03
Smart Images
Figure CN119245511A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of engine valve detection, in particular to a valve size detection device. Background Art
[0002] The valve of an internal combustion engine is a key component of an automobile engine and the central hub for completing power drive. The operating temperature of the intake valve is in the range of 300℃-400℃, and the exhaust valve is in the range of 600℃-750℃. The operating temperature of the exhaust valve of some diesel engines reaches about 850℃. It can be seen that the valve is in high temperature and highly corrosive combustion gas, and at the same time it must withstand repeated effects of tension, pressure and impact. In such a harsh environment, the valve is required to have good comprehensive mechanical properties, such as the detection of rod diameter, cone surface, disc end face, disc outer circle, and lock frame groove.
[0003] For example, the patent application with authorization announcement number CN114838882B discloses a double-station automatic detection device for valve vibration and airtightness performance, including a feeding unit, a first conveying unit and a second conveying unit arranged in sequence along the horizontal direction, a vibration detection unit between the feeding unit and the first conveying unit, a dividing unit between the first conveying unit and the second conveying unit, two groups of airtightness detection units located below the second conveying unit on the right side of the dividing unit, and two groups of unloading units connected to the second conveying unit on the right side.
[0004] The structure provided in the above patent can complete the valve detection work, but since there are certain requirements for the sizes of various valves, after completing the above detection work, the length of the valve needs to be detected. The existing detection technology mainly relies on manual detection using a micrometer, and the detection efficiency is low. The valve is divided into a valve head and a valve stem connected to the valve head. In the process of using the above device for detection, the valve will bounce during the detection process. Therefore, when the valve falls, the bottom of the valve stem will collide with the valve support seat, which can easily cause damage to the valve stem. The existing valve stem bounce sensor, cone bounce sensor and disk outer circle bounce sensor are difficult to detect this part, resulting in missed inspections of the valve, causing unqualified valve products to flow into the subsequent internal combustion engine processing, causing certain economic losses.
[0005] Therefore, how to complete the detection of the valve stem is a problem to be solved at present. Summary of the invention
[0006] The present invention provides a valve size detection device to solve the above problems existing in the prior art.
[0007] A valve size detection device, comprising:
[0008] Workbench;
[0009] The detection unit is equipped with a variety of sensors, and the valve is detected through the set sensors;
[0010] The marking unit marks the valve according to the detection result of the detection unit;
[0011] A transport mechanism, used for transporting the valve, so that the valve is moved from the detection area of the detection unit to the marking area of the marking unit;
[0012] A valve support seat is arranged on a workbench and is used to support the stem of the valve;
[0013] A limit compensation unit, located on the valve support seat, limits the valve in a jumping state and adjusts the limit area according to the length of the valve stem, and a plurality of visual collectors with predetermined inclinations arranged on the limit compensation unit;
[0014] The detection unit, marking unit, transport mechanism, valve support seat and limit compensation unit are all arranged on a workbench.
[0015] In a further embodiment, the detection unit includes a first frame and a second frame fixedly mounted on the workbench, an adjusting assembly connected to the first frame, an image recognition sensor arranged on the adjusting assembly, a cone runout sensor arranged on the first frame, a disk outer circle runout sensor located on the second frame, two supporting slides detachably connected to the first frame, at least two mounting wheels arranged on the supporting slides, a valve stem runout sensor arranged on one of the supporting slides, and a clamping mechanism arranged on the workbench.
[0016] In a further embodiment, the adjustment assembly includes a transmission motor fixedly mounted on the first stand, a transmission screw connected to an output end of the transmission motor, a transmission member sleeved on the transmission screw, a lifting frame connected to the transmission member, a support rail provided on the first stand, and a lifting slider provided on the lifting frame;
[0017] The first stand is provided with a rectangular through hole;
[0018] The lifting frame is a U-shaped structure, one free end of which passes through a rectangular through hole, and two free ends are respectively provided with a light transmitter and a receiver, and the bottom of the lifting frame extends toward the transmission member and is connected to the transmission member;
[0019] The lifting slide block is located on the supporting slide rail and is slidably connected to the supporting slide rail.
[0020] In a further embodiment, the clamping mechanism includes a mounting seat, a displacement cylinder disposed on the mounting seat, a mounting frame connected to the output end of the displacement cylinder, a slide seat and a cross plate disposed on the mounting frame, a clamping seat disposed on the cross plate, driving wheels symmetrically disposed on the clamping seat, a driving belt for connecting the driving wheels, a servo motor connected to one of the driving wheels, a rotating roller connected to the other driving wheel, and a displacement guide rail disposed on the mounting seat;
[0021] The slide seat is located on the displacement guide rail and is slidably connected to the displacement guide rail;
[0022] The rotating roller is tilted, and there is a predetermined angle between its axis and the valve axis.
[0023] In a further embodiment, the marking unit includes a first clamping portion and a second clamping portion, and a marking portion disposed on the workbench;
[0024] The marking part includes a connecting seat fixedly mounted on the workbench, an adjusting rod screwed to the connecting seat, an adjusting knob arranged at one end of the adjusting rod, a driving member arranged on the adjusting rod, a movable plate connected to the driving member, two adjusting sliders symmetrically arranged on the movable plate, an adjusting slide rail arranged on the workbench and slidably connected to the adjusting sliders, a first displacement rod connected to the movable plate, an adjusting block sleeved on the first displacement rod, a second displacement rod connected to the adjusting block, an adjusting frame arranged on the second displacement rod, and a laser marking machine arranged on the adjusting frame.
[0025] In a further embodiment, the limit compensation unit includes a support base fixedly mounted on the valve support seat, at least three adjustment parts arranged on the support base, an adjustment seat connected to the adjustment part, a driving rod symmetrically arranged on the adjustment seat and movably connected to the adjustment seat, a movable disk used to connect the other end of the driving rod and movably connected to the driving rod, and a limit compensation part arranged on the movable disk.
[0026] In a further embodiment, the adjustment part includes a vertical rod connected to the support base, two transmission wheels arranged on the vertical rod, a lifting motor connected to one of the transmission wheels, a transmission belt for connecting the two transmission wheels, a transmission block arranged on the transmission belt, and two lifting slide rails arranged on the vertical rod;
[0027] The adjustment seat is connected to the transmission block;
[0028] The adjustment seat is provided with at least three supporting wheels, and the distances between adjacent supporting wheels are equal. One supporting wheel abuts against one lifting slide rail, and the other two supporting wheels abut against the other lifting slide rail respectively.
[0029] In a further embodiment, the limit compensation part includes a mounting frame arranged on the movable plate, a bidirectional cylinder arranged on the mounting frame, a movable block connected to an output end of the bidirectional cylinder, and a limit part connected to the movable block;
[0030] The limiting part includes two support rods connected to the moving block, a driving shaft and a driven shaft for connecting the two support rods, a limiting motor connected to one end of the driving shaft, two first connecting rods sleeved on the driving shaft, a connecting shaft for connecting the two first connecting rods, a first limiting wheel sleeved on the connecting shaft, a second connecting rod sleeved on the driven shaft, and a third connecting rod for connecting the second connecting rod and the first connecting rod.
[0031] In a further embodiment, the limiting portion also includes a driving frame sleeved on the driven shaft, a second limiting wheel connected to the driving frame, a mounting plate for connecting two third connecting rods, connecting holes are provided on the mounting plate and the driving frame, and a compensation spring for connecting the connecting holes.
[0032] In a further embodiment, the device also includes a loading mechanism arranged on one side of the workbench, a unloading platform located on the other side of the workbench, a storage mechanism connected to the workbench, and a material dividing mechanism arranged between the unloading platform and the storage mechanism.
[0033] Beneficial effect: The present invention discloses a size detection device for valves. In order to complete the detection of valve stems, the device is provided with a detection unit, a limit compensation unit located on the valve support, and a plurality of visual collectors arranged on the limit compensation unit; through the provided visual collector, during the process of the conveying mechanism carrying the valve, the visual collector can detect the bottom of the valve, thereby completing the detection of the bottom of the valve stem, thereby selecting valves damaged during the valve detection process, and screening such valves, and at the same time, the provided visual collector can complete the detection of the valve stem. The groove detection work is carried out, and unqualified products are removed to avoid damage to them that makes it difficult to form a structural connection with the valve lock clamp later. At the same time, the valve is limited by the mounting wheel and the rotating roller. During the valve jumping process, due to the abutment position of the mounting wheel and the rotating roller with the valve, or the valve itself has a certain degree of standard bending, which will cause the valve stem to rotate too much. Therefore, the limit compensation unit set in this device can complete the valve limitation work, avoid the rotation angle of the valve being too large, cause it to collide with the sensor, avoid damage to the sensor, and ensure the smooth progress of the valve detection work. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 It is a front view of a valve size detection device of the present invention;
[0035] Figure 2 is a three-dimensional diagram of the transport mechanism of the present invention;
[0036] Figure 3 is a schematic diagram of a detection unit of the present invention;
[0037] Figure 4 It is a schematic diagram of the structure of the regulating component of the present invention;
[0038] Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the present invention;
[0039] Figure 6 It is a schematic diagram of the structure of the marking unit of the present invention;
[0040] Figure 7 It is a schematic diagram of the structure of the limit compensation unit of the present invention;
[0041] Figure 8 is a top view of the limit compensation unit of the present invention;
[0042] Fig. 9 It is a schematic diagram of the structure of the adjustment part of the present invention;
[0043] Fig.10 is a schematic diagram of a position limiting compensation portion of the present invention;
[0044] Fig.11 It is a schematic diagram of the limiting portion of the present invention;
[0045] Fig.12 It is a partial schematic diagram of the limiting portion of the present invention.
[0046] Figure numerals: 1, workbench; 2, feeding mechanism; 3, transport mechanism; 31, linear motion mechanism; 32, suction nozzle; 33, lifting plate; 4, unloading platform; 5, material distribution mechanism; 6, material storage mechanism; 7, detection unit; 71, adjustment component; 711, second stand; 712, transmission motor; 713, transmission screw; 714, transmission member; 715, support rail; 716, lifting slider; 717, lifting frame; 72, image recognition sensor; 73, first stand; 74, Disk outer circle runout sensor; 75, cone runout sensor; 76, valve stem runout sensor; 77, clamping mechanism; 771, mounting seat; 772, displacement guide rail; 773, slide seat; 774, displacement cylinder; 775, mounting frame; 776, servo motor; 777, rotating roller; 778, driving wheel; 779, cross plate; 7710, clamping seat; 78, mounting wheel; 79, supporting slide block; 8, marking unit; 81, connecting seat; 82, adjusting rod; 83, adjusting knob ;84, driving member;85, movable plate;86, adjusting slide rail;87, adjusting slider;88, first displacement rod;89, adjusting block;810, second displacement rod;811, adjusting frame;812, laser marking machine;9, limit compensation unit;91, supporting base;92, adjusting part;921, vertical rod;922, lifting motor;923, transmission wheel;924, transmission belt;925, transmission block;926, lifting slide rail;93, adjusting seat;94, driving rod;95, Movable disk; 96, limit compensation part; 961, mounting frame; 962, movable block; 963, bidirectional cylinder; 964, support rod; 965, limit motor; 966, drive shaft; 967, first connecting rod; 968, second connecting rod; 969, driven shaft; 9610, drive frame; 9611, second limit wheel; 9612, connecting shaft; 9613, first limit wheel; 9614, mounting plate; 9615, compensation spring; 9616, third connecting rod; 10, valve support seat. DETAILED DESCRIPTION
[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0049] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.
[0050] The present invention discloses a valve size detection device, referring to Figure 1-Figure 12 ,include:
[0051] A workbench 1 and a detection unit 7 with multiple sensors installed therein, which detects the valve through the sensors provided; a marking unit 8, which marks the valve according to the detection result of the detection unit 7; a transport mechanism 3, which is used to transport the valve, so that the valve moves from the detection area of the detection unit 7 to the marking area of the marking unit 8; a valve support seat 10, which is arranged on the workbench 1 and is used to support the stem of the valve; a limit compensation unit 9, which is located on the valve support seat 10, limits the valve in a jumping state, and adjusts the limit area according to the length of the valve stem, and a plurality of visual collectors with a predetermined inclination are arranged on the limit compensation unit 9; when performing valve detection work, the plane where the multiple visual collectors are located is perpendicular to the valve axis direction, and is used to collect data from the groove of the valve stem. At the same time, the limit compensation unit 9 can also adjust the axial position of the visual collector on the valve stem, so that a single groove can be detected multiple times, and data information of multiple grooves can also be collected.
[0052] The detection unit 7 includes a first frame 73 and a second frame 711 fixedly mounted on the workbench 1, an adjusting assembly 71 connected to the first frame 73, an image recognition sensor 72 arranged on the adjusting assembly 71, a cone runout sensor 75 arranged on the first frame 73, a disk outer circle runout sensor 74 located on the second frame 711, two supporting sliders 79 detachably connected to the first frame 73, at least two mounting wheels 78 arranged on the supporting sliders 79, a valve stem runout sensor 76 arranged on one of the supporting sliders 79, and a clamping mechanism 77 arranged on the workbench 1; wherein the first frame 73 is provided with a plurality of threaded holes in the height direction, and the operator can install the position of the supporting slider 79 according to the length of the valve, so that it cooperates with the clamping mechanism 77 to complete the limit clamping work of the valve. At least in the working state, the clamping mechanism 77 can adjust the position of the rotating roller 777, thereby adjusting the distance between the rotating roller 777 and the mounting wheel 78, and then the valve is placed in the area between the rotating roller 777 and the mounting wheel 78 through the transport mechanism 3, and then the rotating roller 777 is rotated to drive the valve to rotate. In this process, the image recognition sensor 72 can move along the axis of the valve stem under the drive of the adjustment component 71, and the cone runout sensor 75 abuts against the cone area of the valve head. The disk outer circle runout sensor 74 abuts against the circumferential direction of the valve head, while the valve stem runout sensor 76 is located on a supporting slider 79 close to the workbench 1, and the abutment position of the rotating roller 777 and the valve is close to the mounting wheel 78 on another supporting slider 79, so that the valve stem runout sensor 76 can complete the valve stem runout detection work and complete the detection of various valve data. By adjusting the area between the rotating roller 777 and the mounting wheel 78, the support and rotation of valves of different sizes can be completed.
[0053] In a further embodiment, since the valve stem has a certain length, and the detection area of one image recognition sensor 72 is smaller than the area where the length of the valve stem is located, the valve stem may be missed from detection. If multiple image recognition sensors 72 are provided, it will cause a waste of resources.
[0054] In order to solve the above problems, the device is provided with an adjustment component 71, which includes a transmission motor 712 fixedly mounted on the first stand 73, a transmission screw 713 connected to the output end of the transmission motor 712, a transmission member 714 sleeved on the transmission screw 713, a lifting frame 717 connected to the transmission member 714, a support rail 715 provided on the first stand 73, and a lifting slider 716 provided on the lifting frame 717; a rectangular through hole is provided on the first stand 73; the lifting frame 717 is a U-shaped structure, one free end of which passes through the rectangular through hole, and a light transmitter and a receiver are respectively provided at the two free ends, and the bottom of the lifting frame 717 faces The lifting slider 716 is located on the support rail 715 and is slidably connected to the support rail 715. When the detection area of the image recognition sensor 72 needs to be adjusted, the transmission motor 712 starts to work, and the moving transmission motor 712 can drive the transmission screw 713 to rotate, and the moving transmission screw 713 can drive the transmission member 714 to move. The moving transmission member 714 moves along the length direction of the support rail 715 with the cooperation of the lifting slider 716, thereby adjusting its position on the first stand 73, thereby adjusting the detection area of the image recognition sensor 72 and completing the detection work in the length direction of the valve stem.
[0055] The clamping mechanism 77 includes a mounting seat 771, a displacement cylinder 774 arranged on the mounting seat 771, a mounting frame 775 connected to the output end of the displacement cylinder 774, a slide 773 and a cross plate 779 arranged on the mounting frame 775, a clamping seat 7710 arranged on the cross plate 779, a driving wheel 778 symmetrically arranged on the clamping seat 7710, a driving belt for connecting the driving wheel 778, a servo motor 776 connected to one of the driving wheels 778, a rotating roller 777 connected to the other driving wheel 778, and a displacement guide rail 772 arranged on the mounting seat 771; the slide 773 is located on the displacement guide rail 772 and is slidably connected to the displacement guide rail 772; the rotating roller 777 is tilted, and there is a predetermined angle between its axis and the valve axis; when the valve clamping work is required, the displacement cylinder 774 starts to work, and the moving displacement cylinder 774 can drive the mounting plate 9 614 moves in the length direction of the displacement guide rail 772, and then the moving mounting plate 9614 can drive the cross plate 779 to move. At this time, the moving cross plate 779 can adjust the position of the rotating roller 777, so that the valve stem is respectively in contact with the mounting wheel 78 and the rotating roller 777, and then the servo motor 776 starts to work, and the moving servo motor 776 can drive the driving wheel 778 connected thereto to rotate, and then the driving wheel 778 can drive another driving wheel 778 to rotate through the driving belt, thereby driving the rotating roller 777 to rotate. Since the rotating roller 777 is in contact with the valve stem, the valve moves, and the valve detection work is completed by the set conical surface runout sensor 75, the disk outer circle runout sensor 74 and the valve stem runout sensor 76. The valve can be in a rotating state by the set rotating roller 777, and then other sensors can complete the valve detection work without moving.
[0056] In a further embodiment, after completing the detection work, the existing valve detection device will transport the valve to the unloading platform 4 through the set conveying mechanism 3, and then the valve can fall onto the dividing mechanism 5 under the influence of its own gravity, wherein the dividing mechanism 5 is located on the dividing platform, and a linear transportation device will be provided on the dividing platform. The linear transportation device is a prior art, which can be a screw linear transportation device, a cylinder linear transportation device or a belt linear transportation device, so that the dividing mechanism 5 can be moved along the width direction of the dividing platform, so that the valves are classified or stored according to the detection structure, and then the valves are transported to the marking position by the set conveyor, and the marking work of the valves is completed by the set marking unit 8. Although the above method can complete the marking work of the valves, it will cause the entire device to occupy too much area, and since the number of storage mechanisms 6 is greater than two, at least two conveyors are required to transport the valves on the storage mechanisms 6 to the predetermined marking area, which increases the cost.
[0057] In order to solve the above problems, the device is provided with a marking unit 8 between the detection unit 7 and the unloading platform 4. Through the suction nozzle 32 arranged on the conveying mechanism 3, the valve can pass through the predetermined detection area and marking area in sequence, and then fall onto the unloading platform 4. The marking unit 8 includes a first clamping part and a second clamping part, and a marking part arranged on the workbench 1; the marking part includes a connecting seat 81 fixedly mounted on the workbench 1, an adjusting rod 82 screwed to the connecting seat 81, an adjusting knob 83 arranged at one end of the adjusting rod 82, a driving member 84 arranged on the adjusting rod 82, a movable plate 85 connected to the driving member 84, two adjusting sliders 87 symmetrically arranged on the movable plate 85, an adjusting slide rail 86 arranged on the workbench 1 and slidably connected to the adjusting slider 87, a first displacement rod 88 connected to the movable plate 85, an adjusting block 89 sleeved on the first displacement rod 88, a second displacement rod 810 connected to the adjusting block 89, and a 10, and a laser marking machine 812 arranged on the adjusting frame 811; wherein the first clamping part has the same structure as the clamping mechanism 77, and the second clamping part includes the first stand 73 in the detection unit 7, two supporting sliders 79 detachably connected to the first stand 73, and at least two mounting wheels 78 arranged on the supporting slider 79, and the position of the rotating roller 777 is adjusted by the operation of the displacement cylinder 774 in the clamping mechanism 77, so that the valve is respectively abutted against the rotating roller 777 and the mounting wheel 78, thereby completing the clamping of the valve, and through the provided marking part, the position of the laser marking machine 812 can be adjusted, so that it can mark the predetermined position of valves of different sizes; through the two supporting sliders 79 detachably connected to the first stand 73, the operator can adjust the position of the supporting slider 79 on the first stand 73 according to the actual length of the valve, so as to ensure that the valve can rotate normally, so that the laser marking machine 812 can perform marking;
[0058] Before performing the marking work, the operator needs to adjust the position of the laser marking machine 812. The operator can turn the adjusting knob 83. The moving adjusting knob 83 can drive the adjusting rod 82 to rotate, thereby adjusting the distance between the driving member 84 and the connecting seat 81. Then the moving driving member 84 can drive the movable plate 85 to move in the length direction of the adjusting slide rail 86. At the same time, with the cooperation of the first displacement rod 88 and the second displacement rod 810, the position of the laser marking machine 812 in the width and height directions of the adjusting slide rail 86 can be adjusted, thereby adjusting the three-dimensional position of the laser marking machine 812 so that it can mark the valve; by integrating the marking unit 8 between the unloading table 4 and the detection unit 7, the marking work of the valve can be completed after the valve completes the detection work, thereby shortening the length of the entire valve detection and marking device and reducing its footprint.
[0059] In a further embodiment, the existing valve detection device uses a cone runout sensor 75, a disk outer circle runout sensor 74, a valve stem runout sensor 76 and an image recognition sensor 72, wherein the image recognition sensor 72 is a Keyence sensor, and the arranged sensors can respectively detect the cone runout of the valve, the outer circle runout of the valve head disk, the valve stem runout and the size of the valve. However, during the valve runout, the bottom end of the valve stem will collide with the valve support seat 10. In particular, in order to ensure that the valve can rotate smoothly in the existing valve support seat 10, a spherical protrusion is provided on the valve support seat 10, so that the bottom of the valve abuts against the spherical protrusion to reduce the resistance when the valve rotates. When the valve abuts against the spherical protrusion, it is a surface-to-point contact. Therefore, during the valve runout, the valve stem is easily damaged.
[0060] In order to solve the above problems, a limit compensation unit 9 is provided in the device, and the limit compensation unit 9 includes a support base 91 fixedly mounted on the valve support seat 10, at least three adjustment parts 92 arranged on the support base 91, an adjustment seat 93 connected to the adjustment part 92, a driving rod 94 symmetrically arranged on the adjustment seat 93 and movably connected to the adjustment seat 93, a movable plate 95 used to connect the other end of the driving rod 94 and movably connected to the driving rod 94, and a limit compensation part 96 arranged on the movable plate 95; the adjustment part 92 includes a vertical rod 921 connected to the support base 91, and a vertical rod 921 is arranged on the vertical rod 921. Two transmission wheels 923 on the rod 921, a lifting motor 922 connected to one of the transmission wheels 923, a transmission belt 924 for connecting the two transmission wheels 923, a transmission block 925 provided on the transmission belt 924, and two lifting slide rails 926 provided on the vertical rod 921; the adjustment seat 93 is connected to the transmission block 925; at least three support wheels are provided on the adjustment seat 93, and the distances between adjacent support wheels are equal, one of the support wheels is in contact with one of the lifting slide rails 926, and the other two support wheels are respectively in contact with the other lifting slide rails 926; the adjustment parts 92 are independent of each other and do not interfere with each other, and when it is necessary to adjust the movement When the height of the plate 95 or the axial position of the movable plate 95 is adjusted, the lifting motor 922 starts to work, and the moving lifting motor 922 can drive the transmission wheel 923 connected thereto to rotate, thereby driving the transmission belt 924 to move, and the moving transmission belt 924 can drive the transmission block 925 to move, thereby driving the adjustment seat 93 to move in the length direction of the lifting slide rail 926. By controlling the rotation speed of the lifting motor 922 in the three adjustment parts 92, the displacement of the adjustment seat 93 is changed, so that the movable plate 95 is moved in a horizontal or inclined manner. Compared with a fixedly installed visual collector, this device can adjust the visual The collecting angle between the collector and the valve is adjusted to obtain multiple sets of data and complete the detection work. At the same time, in the actual production process, the valve stem has a certain curvature, and the curvature is qualified as long as it is within the specified range. The movable plate 95 is tilted to make a specified angle between the visual collector and the valve stem, so that the visual collector can complete the specified data collection work and avoid missed detection. At the same time, for valves with grooves on the valve stem, the device can also detect defects in the grooves through the visual collector, so as to ensure that the grooves meet the specified standards and ensure that the subsequent structural connection with the valve lock clamp can be formed.
[0061] In a further embodiment, since the valve will not only move in its axial direction but also in its radial direction during the process of valve vibration detection, in order to avoid the valve from displacing too much in the radial direction and colliding with other structures, it is necessary to limit the valve. Most of the existing limiting work adopts a rigid limiting method, which results in a small degree of freedom between the valve and the limiting device. When there is a standard bend on the valve stem, the valve is difficult to rotate due to the rigid limiting method, which makes it difficult for the sensor to detect the valve, resulting in the failure of the valve detection.
[0062] In order to solve the above problems, a limit compensation part 96 is provided in the present device, and the limit compensation part 96 includes a mounting frame 961 arranged on the movable disk 95, a two-way cylinder 963 arranged on the mounting frame 961, a movable block 962 connected to the output end of the two-way cylinder 963, and a limit part connected to the movable block 962; the limit part includes two support rods 964 connected to the movable block 962, a driving shaft 966 and a driven shaft 969 for connecting the two support rods 964, a limit motor 965 connected to one end of the driving shaft 966, and two first connecting rods 967 sleeved on the driving shaft 966 for connecting A connecting shaft 9612 of two first connecting rods 967, a first limiting wheel 9613 sleeved on the connecting shaft 9612, a second connecting rod 968 sleeved on the driven shaft 969, and a third connecting rod 9616 for connecting the second connecting rod 968 and the first connecting rod 967; the limiting part also includes a driving frame 9610 sleeved on the driven shaft 969, a second limiting wheel 9611 connected to the driving frame 9610, and a mounting plate 9614 for connecting the two third connecting rods 9616, the mounting plate 9614 and the driving frame 9610 are both provided with connecting holes, and a compensation spring 9615 for connecting the connecting holes;Before the valve is placed on the valve support seat 10, the limit motor 965 starts to work, and the moving limit motor 965 can drive the drive shaft 966 to rotate, thereby driving the first connecting rod 967 to rotate, and the moving first connecting rod 967 can drive the connecting shaft 9612 to move, thereby adjusting the position of the first limit wheel 9613, so that the first limit wheels 9613 can be close to each other, and because the first limit wheels 9613 are provided with limit grooves with a predetermined arc in the circumference, a placement area will be formed between the four first limit wheels 9613 that are close to each other, and then the stem of the valve can be passed through the above-mentioned placement area through the conveying mechanism 3 and the bottom of the valve stem is placed on the valve. On the support seat 10, the limit motor 965 then works in the reverse direction, and the moving limit motor 965 can make the first limit wheel 9613 away from the valve through the driving shaft 966 and the first connecting rod 967, and then the moving first connecting rod 967 can drive the third connecting rod 9616 to move, so that the moving third connecting rod 9616 can drive the second connecting rod 968 to move, adjust the angle between the second connecting rod 968 and the third connecting rod 9616, and then the moving second connecting rod 968 can drive the mounting plate 9614 and the driven shaft 969 to move, and the moving driven shaft 969 can drive the driving frame 9610 to rotate, so that the second limit wheel 9611 abuts against the valve, When the bent valve stem rotates, the deformation of the compensation spring 9615 in the limiting part corresponding to the bending direction of the valve stem increases, while the deformation of the compensation spring 9615 in the remaining limiting part decreases, so that the second limiting wheel 9611 can always abut against the valve, and the position of the second limiting wheel 9611 can be self-adjusted as the valve rotates. By using the second limiting wheel 9611 in conjunction with the compensation spring 9615, the second limiting wheel 9611 can abut against the valve during the valve bounce detection process, thereby limiting the valve. At the same time, the compensation spring 9615 is set to enable the second limiting wheel 9611 to abut against the valve. The rods are flexibly connected. When the displacement of the valve rod is too large, a thrust will be applied to the second limit wheel 9611 to make it move away from the predetermined position. The thrust will deform the compensation spring 9615 again, so that the position of the second limit wheel 9611 will be slightly offset. Compared with the traditional rigid limit method, the valve rod has a predetermined degree of freedom during the limit jump process, which avoids damage to the valve during the detection process due to the rigid limit method, and ensures that the valve can rotate smoothly; at the same time, during the position adjustment of the moving plate 95, the deformation of the compensation spring 9615 can also be adjusted automatically, and the limit work can also be performed for slightly bent valves. ;
[0063] The device also includes a loading mechanism 2 arranged on one side of the workbench 1, a unloading platform 4 located on the other side of the workbench 1, a storage mechanism 6 connected to the workbench 1, and a material dividing mechanism 5 arranged between the unloading platform 4 and the storage mechanism 6.
[0064] In a further embodiment, the feeding mechanism 2, the conveying mechanism 3, the unloading platform 4, the dividing mechanism 5 and the storage mechanism 6 in the device are all prior art, wherein the conveying mechanism 3 includes at least two vertically placed linear motion mechanisms 31, a lifting plate 33 connected to one of the linear motion mechanisms 31, and three suction nozzles 32 evenly arranged on the lifting plate 33, the suction nozzles 32 are respectively connected to the air source, the linear motion mechanism 31 is prior art, and can be a screw linear motion mechanism or a cam linear motion mechanism, etc., the feeding mechanism 2 is used to transport the valve to a predetermined position, and then the conveying mechanism 3 transports the valve to the predetermined position. A certain detection area is defined. After completing the detection of the valve, the conveying mechanism 3 starts to work at this time, and completes the adsorption of the valve through the suction nozzle 32, and then conveys it to the marking area of the marking unit 8, and completes the marking of the valve through the set laser marking machine 812, and then the conveying mechanism 3 starts to work again. The moving conveying mechanism 3 can convey the valve to the unloading table 4, and then the valve can fall into the dividing mechanism 5 under the influence of its own gravity, and then the dividing mechanism 5 completes the conveying work of the valve according to the pre-set program, so that the valve can be located in the established storage mechanism 6, thereby completing the detection of the valve.
[0065] Working principle description: When the valve needs to be inspected, the valve can be transported to a predetermined position through the provided feeding mechanism 2, and then the position of the suction nozzle 32 on the lifting plate 33 is adjusted by the cooperation of the two linear motion mechanisms 31 in the provided transport mechanism 3, so that the suction nozzle 32 can adsorb the valve, and the valve is transported to a predetermined inspection area through the linear motion mechanism 31. Before the inspection and marking work, the position of the laser marking machine 812 needs to be adjusted. The operator can turn the adjustment knob 83 to adjust the movement of the adjustment knob 8 3 can drive the adjusting rod 82 to rotate, so as to adjust the distance between the driving member 84 and the connecting seat 81, and then the moving driving member 84 can drive the movable plate 85 to move in the length direction of the adjusting slide rail 86, and at the same time, under the cooperation of the first displacement rod 88 and the second displacement rod 810, the position of the laser marking machine 812 in the width and height directions of the adjusting slide rail 86 can be adjusted, so as to adjust the three-dimensional position of the laser marking machine 812, so that it can mark the valve; when the valve is located in the detection area, it is necessary to When the valve is clamped, the displacement cylinder 774 starts to work, and the moving displacement cylinder 774 can drive the mounting plate 9614 to move in the length direction of the displacement guide rail 772, and then the moving mounting plate 9614 can drive the cross plate 779 to move. At this time, the moving cross plate 779 can adjust the position of the rotating roller 777, so that the valve stem is respectively in contact with the mounting wheel 78 and the rotating roller 777, and then the servo motor 776 starts to work, and the moving servo motor 776 can drive the driving wheel 778 connected thereto. The driving wheel 778 is then driven by the driving belt to drive another driving wheel 778 to rotate, thereby driving the rotating roller 777 to rotate. Since the rotating roller 777 is in contact with the valve stem, the valve moves, and the cone runout sensor 75, the disk outer circle runout sensor 74 and the valve stem runout sensor 76 are used to detect the valve. The rotating roller 777 is used to make the valve rotate, so that other sensors do not need to move to complete the detection of the valve.During the inspection, the clamping mechanism 77 can adjust the position of the rotating roller 777, thereby adjusting the distance between the rotating roller 777 and the mounting wheel 78, and then the valve is placed in the area between the rotating roller 777 and the mounting wheel 78 through the conveying mechanism 3, and then the rotating roller 777 is rotated to drive the valve to rotate. In this process, the image recognition sensor 72 can move along the axial direction of the valve stem under the drive of the adjustment component 71, and the conical surface runout sensor 75 abuts against the conical surface area of the valve head, the disk outer circle runout sensor 74 abuts against the circumferential direction of the valve head, and the valve stem runout sensor 76 is located on the supporting slider 79 close to the workbench 1, and the abutment position of the rotating roller 777 and the valve is close to the mounting wheel 78 on another supporting slider 79, so that the valve The valve stem vibration sensor 76 can detect the valve stem vibration and various valve data, and by adjusting the area between the rotating roller 777 and the mounting wheel 78, it can support and rotate valves of different sizes. When the detection area of the image recognition sensor 72 needs to be adjusted, the transmission motor 712 starts to work, and the moving transmission motor 712 can drive the transmission screw 713 to rotate, and the moving transmission screw 713 can drive the transmission member 714 to move. The moving transmission member 714 moves along the length direction of the support slide rail 715 with the cooperation of the lifting slider 716, so as to adjust its position on the first stand 73, thereby adjusting the detection area of the image recognition sensor 72 and completing the detection of the valve stem length direction.
[0066] When it is necessary to adjust the height of the movable plate 95 or the axial position of the movable plate 95, the lifting motor 922 starts to work, and the moving lifting motor 922 can drive the transmission wheel 923 connected thereto to rotate, thereby driving the transmission belt 924 to move, and the moving transmission belt 924 can drive the transmission block 925 to move, thereby driving the adjustment seat 93 to move in the length direction of the lifting slide rail 926. By controlling the rotation speed of the lifting motor 922 in the three adjustment parts 92, the displacement of the adjustment seat 93 is changed, so that the movable plate 95 is moved in a horizontal or inclined manner. Compared with a fixedly installed visual collector, this device can adjust The collection angle between the visual collector and the valve is adjusted to obtain multiple sets of data and complete the detection work. At the same time, in the actual production process, the valve stem has a certain curvature, and the curvature is qualified as long as it is within a predetermined range. By tilting the movable plate 95, a predetermined angle is formed between the visual collector and the valve stem, which facilitates the visual collector to complete the predetermined data collection work and avoids missed inspections. At the same time, for valves with grooves on the valve stem, the device can also detect defects in the grooves through the visual collector, thereby ensuring that the grooves meet the predetermined standards and that a structural connection can be formed with the valve lock clamp in the future.Before the valve is placed on the valve support seat 10, the limit motor 965 starts to work. The moving limit motor 965 can drive the drive shaft 966 to rotate, thereby driving the first connecting rod 967 to rotate. The moving first connecting rod 967 can drive the connecting shaft 9612 to move, thereby adjusting the position of the first limit wheel 9613, so that the first limit wheels 9613 can approach each other. Since the first limit wheel 9613 is provided with a predetermined arc limit groove on its circumference, the four first limit wheels approaching each other are A placement area is formed between the positioning wheels 9613, and then the valve stem can be passed through the placement area through the conveying mechanism 3 so that the bottom of the valve stem is located on the valve support seat 10, and then the limiting motor 965 works in the reverse direction, and the moving limiting motor 965 can make the first limiting wheel 9613 away from the valve through the driving shaft 966 and the first connecting rod 967, and then the moving first connecting rod 967 can drive the third connecting rod 9616 to move, so that the moving third connecting rod 9616 can drive the second connecting rod 9616 to move. 68 moves to adjust the angle between the second connecting rod 968 and the third connecting rod 9616, and then the moving second connecting rod 968 can drive the mounting plate 9614 and the driven shaft 969 to move, and the moving driven shaft 969 can drive the driving frame 9610 to rotate, so that the second limiting wheel 9611 abuts against the valve, and when the bent valve stem rotates, the deformation of the compensation spring 9615 in the limiting part corresponding to the bending direction of the valve stem increases, and the deformation of the compensation spring 9615 in the remaining limiting part increases. The variable becomes smaller, so that the second limiting wheel 9611 can always abut against the valve, so that the position of the second limiting wheel 9611 can be self-adjusted with the rotation of the valve. After the valve detection work is completed, the valve can be located in the marking area through the conveying mechanism 3, and then the valve is marked by the laser marking machine 812, and then it is transported to the unloading platform 4 through the conveying mechanism 3, and then with the movement of the dividing mechanism 5, the valve is located on different discharging mechanisms to complete the entire valve detection work. ;
[0067] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.
Claims
1. A valve dimension detection device, characterized in that: include: Workbench (1); A detection unit (7) is provided with a plurality of sensors, and the valve is detected by the provided sensors; A marking unit (8) marks the valve according to the detection result of the detection unit (7); A transport mechanism (3) is disposed on the workbench (1) and is used to transport the valve so that the valve is moved from the detection area of the detection unit (7) to the marking area of the marking unit (8); A valve support seat (10) is arranged on the workbench (1) and is used to support the stem of the valve; A limit compensation unit (9) is located on a valve support seat (10), limits the position of the valve in a jumping state, and adjusts the limit area according to the length of the valve stem, and a plurality of visual collectors with predetermined inclinations are arranged on the limit compensation unit (9).
2. A valve size detection device according to claim 1, characterized in that: The detection unit (7) comprises a first stand (73) and a second stand (711) fixedly mounted on the workbench (1), an adjustment assembly (71) connected to the first stand (73), an image recognition sensor (72) arranged on the adjustment assembly (71), a cone runout sensor (75) arranged on the first stand (73), a disk outer circle runout sensor (74) located on the second stand (711), two support sliders (79) detachably connected to the first stand (73), at least two mounting wheels (78) arranged on the support sliders (79), a valve stem runout sensor (76) arranged on one of the support sliders (79), and a clamping mechanism (77) arranged on the workbench (1).
3. A valve size detection device according to claim 2, characterized in that: The adjustment component (71) comprises a transmission motor (712) fixedly mounted on the first vertical frame (73), a transmission screw (713) connected to the output end of the transmission motor (712), a transmission member (714) sleeved on the transmission screw (713), a lifting frame (717) connected to the transmission member (714), a support rail (715) provided on the first vertical frame (73), and a lifting slider (716) provided on the lifting frame (717); The first stand (73) is provided with a rectangular through hole; The lifting frame (717) is a U-shaped structure, one free end of which passes through a rectangular through hole, and two free ends are respectively provided with a light transmitter and a receiver, and the bottom of the lifting frame (717) extends toward the transmission member (714) and is connected to the transmission member (714); The lifting slide block (716) is located on the supporting slide rail (715) and is slidably connected to the supporting slide rail (715).
4. A valve dimension detection device according to claim 2, characterized in that: The clamping mechanism (77) comprises a mounting seat (771), a displacement cylinder (774) arranged on the mounting seat (771), a mounting frame (775) connected to the output end of the displacement cylinder (774), a sliding seat (773) and a transverse plate (779) arranged on the mounting frame (775), a clamping seat (7710) arranged on the transverse plate (779), driving wheels (778) symmetrically arranged on the clamping seat (7710), a driving belt for connecting the driving wheels (778), a servo motor (776) connected to one of the driving wheels (778), a rotating roller (777) connected to the other driving wheel (778), and a displacement guide rail (772) arranged on the mounting seat (771); The sliding seat (773) is located on the displacement guide rail (772) and is slidably connected to the displacement guide rail (772); The rotating roller (777) is tilted, and a predetermined angle exists between its axis and the valve axis.
5. A valve dimension detection device according to claim 1, characterized in that: The marking unit (8) comprises a first clamping portion, a second clamping portion, and a marking portion arranged on the workbench (1); The marking part comprises a connecting seat (81) fixedly mounted on the workbench (1), an adjusting rod (82) screwed to the connecting seat (81), an adjusting knob (83) arranged at one end of the adjusting rod (82), a driving member (84) arranged on the adjusting rod (82), a movable plate (85) connected to the driving member (84), two adjusting sliders (87) symmetrically arranged on the movable plate (85), an adjusting slide rail (86) arranged on the workbench (1) and slidably connected to the adjusting sliders (87), a first displacement rod (88) connected to the movable plate (85), an adjusting block (89) sleeved on the first displacement rod (88), a second displacement rod (810) connected to the adjusting block (89), an adjusting frame (811) arranged on the second displacement rod (810), and a laser marking machine (812) arranged on the adjusting frame (811).
6. A valve dimension detection device according to claim 5, characterized in that: The limit compensation unit (9) comprises a support base (91) fixedly mounted on the valve support seat (10), at least three adjustment parts (92) arranged on the support base (91), an adjustment seat (93) connected to the adjustment part (92), a driving rod (94) symmetrically arranged on the adjustment seat (93) and movably connected to the adjustment seat (93), a movable plate (95) used to connect the other end of the driving rod (94) and movably connected to the driving rod (94), and a limit compensation part (96) arranged on the movable plate (95).
7. A valve dimension detection device according to claim 6, characterized in that: The adjusting portion (92) comprises a vertical rod (921) connected to the supporting base (91), two transmission wheels (923) arranged on the vertical rod (921), a lifting motor (922) connected to one of the transmission wheels (923), a transmission belt (924) for connecting the two transmission wheels (923), a transmission block (925) arranged on the transmission belt (924), and two lifting slide rails (926) arranged on the vertical rod (921); The adjustment seat (93) is connected to the transmission block (925); The adjustment seat (93) is provided with at least three support wheels, and the distances between adjacent support wheels are equal. One of the support wheels abuts against one of the lifting rails (926), and the other two support wheels abut against another lifting rail (926) respectively.
8. A valve dimension detection device according to claim 6, characterized in that: The limit compensation part (96) comprises a mounting frame (961) arranged on the movable plate (95), a bidirectional cylinder (963) arranged on the mounting frame (961), a movable block (962) connected to the output end of the bidirectional cylinder (963), and a limit part connected to the movable block (962); The limiting part includes two support rods (964) connected to the moving block (962), a driving shaft (966) and a driven shaft (969) for connecting the two support rods (964), a limiting motor (965) connected to one end of the driving shaft (966), two first connecting rods (967) sleeved on the driving shaft (966), a connecting shaft (9612) for connecting the two first connecting rods (967), a first limiting wheel (9613) sleeved on the connecting shaft (9612), a second connecting rod (968) sleeved on the driven shaft (969), and a third connecting rod (9616) for connecting the second connecting rod (968) and the first connecting rod (967).
9. A valve dimension detection device according to claim 8, characterized in that: The limiting portion also includes a driving frame (9610) sleeved on the driven shaft (969), a second limiting wheel (9611) connected to the driving frame (9610), a mounting plate (9614) for connecting two third connecting rods (9616), connecting holes are provided on the mounting plate (9614) and the driving frame (9610), and a compensation spring (9615) for connecting the connecting holes.
10. A valve dimension detection device according to claim 1, characterized in that: It also includes a loading mechanism (2) arranged on one side of the workbench (1), a unloading platform (4) located on the other side of the workbench (1), a storage mechanism (6) connected to the workbench (1), and a material distribution mechanism (5) arranged between the unloading platform (4) and the storage mechanism (6).
Citation Information
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