Filter thread detection mechanism

Abstract

The utility model relates to a filter thread detection mechanism, which comprises a frame, a positioning die holder and a motor, a go gauge mounting seat is arranged between the motor and the positioning die holder, a go gauge is connected above the go gauge mounting seat, a detection abdicating hole through which the go gauge can pass is arranged in the middle of the positioning die holder in a penetrating manner, and the positioning die holder is linked with a guide assembly. The device is characterized in that a rotating sleeve is arranged between the go gauge mounting base and the motor, the lower end of the rotating sleeve is in linkage with the output end of the motor, a linkage structure is arranged between the rotating sleeve and the go gauge mounting base, and the go gauge mounting base can rotate along with the rotating sleeve through the linkage structure and / or reciprocate relative to the rotating sleeve in the axis direction of the rotating sleeve. According to the filter thread detection mechanism designed by the utility model, the go gauge floats up and down so as to avoid jamming, reduce abrasion and prolong the service life.

Description

Technical Field

[0001] The utility model specifically relates to a filter thread detection mechanism. Background Art

[0002] Filters are widely used in various machines and automobiles. Their main function is to filter impurities. Finished filters have threaded holes for installation. During the production process of filters, especially before the filters are put into storage, a series of tests need to be carried out on the filters. Among them, the thread test in the installation hole is an indispensable process.

[0003] The Chinese invention patent document with the publication number "CN104764426B" discloses a filter oil outlet thread detection and comparison device, which mainly includes a frame, a filter material conveying mechanism, a filter gauge rotation detection mechanism, and a comparison detection conveying mechanism. A handling robot is installed on the frame and above the filter gauge rotation detection mechanism and the comparison detection conveying mechanism.

[0004] The filter gauge rotation detection mechanism mainly includes a frame, a speed regulating motor, and a gauge. The speed regulating motor is connected to a gauge mounting seat, and the gauge is mounted on the gauge mounting seat. A guide rod is installed on the upper part of the frame and on both sides of the gauge through a linear bearing, and a positioning mold seat is installed on the guide rod. The gauge mounting seat is linked with the speed regulating motor through a plunger screw. Paragraphs 0019-0020 of the specification of the public document specifically disclose the specific process of the filter gauge rotation detection mechanism for detecting the filter threaded holes and the method of judging qualified products and unqualified products. Therefore, it will not be elaborated here.

[0005] Although the filter gauge rotation detection mechanism can complete the detection of the filter threaded hole, it has the following defects:

[0006] The through gauge mounting seat is linked to the coupling through the plunger screw, and the through gauge is fixedly mounted on the through gauge mounting seat. This transmission structure causes the through gauge and the through gauge mounting seat to be fixed along the axial direction of the linear bearing during the filter thread detection process, that is, the through gauge and the through gauge mounting seat will only rotate on their own, and will not rise and fall with the filter, but the quality of the filter is detected by the up and down movement of the filter. Then, when the quality of the oil outlet thread of the filter is poor, the unqualified filter will inevitably spin or get stuck until its clamping force reaches the preload force, and the plunger screw 23 disengages from the through gauge mounting seat 24 to protect the speed regulating motor 20, and the defective filters are manually picked out.

[0007] Firstly, the design of the filter gauge rotation detection mechanism is extremely unreasonable. When defective products appear, the gauge and the filter will get stuck, and then the friction between the plunger screw and the gauge mounting seat needs to be overcome to protect the servo motor. This will inevitably aggravate the wear of the plunger screw, servo motor output rod, gauge, filter threaded hole, etc., and the gauge, plunger screw, servo motor, etc. need to be replaced frequently. The subsequent maintenance cost is high and time-consuming and labor-intensive.

[0008] Secondly, when the filter is stuck, the speed regulating motor needs to overcome additional resistance, which will inevitably cause the motor to run overloaded, which will greatly damage the motor and affect its performance in the long run. At the same time, when the filter is spinning or stuck, the abnormal stress generated will cause the guide rod to be unevenly stressed in the linear bearing, which may cause the guide rod to bend or the bearing to wear excessively. These design defects not only increase the difficulty and cost of maintenance, but also affect the reliability and stability of the entire detection mechanism.

[0009] Third, once defective products appear, they need to be manually removed in time, otherwise they will be stuck or the filter will spin for a long time, which will undoubtedly increase the workload of workers and also pose a greater safety risk, especially when close to mechanical moving parts. Utility Model Content

[0010] The technical problem to be solved by the utility model is to provide a filter thread detection mechanism to address the deficiencies of the above-mentioned prior art, so as to avoid jamming by floating the gauge up and down, reduce wear and extend the service life.

[0011] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filter thread detection mechanism, comprising a frame, a positioning die seat, and a motor, a through gauge mounting seat is provided between the motor and the positioning die seat, a through gauge is connected to the top of the through gauge mounting seat, a detection clearance hole through which the through gauge can pass is penetrated in the middle of the positioning die seat, and a guide component is linked to the positioning die seat, characterized in that a rotating sleeve is provided between the through gauge mounting seat and the motor, the lower end of the rotating sleeve is linked to the output end of the motor, a linkage structure is provided between the rotating sleeve and the through gauge mounting seat, and the through gauge mounting seat can rotate with the rotating sleeve and / or reciprocate relative to the rotating sleeve along the axis direction of the rotating sleeve through the linkage structure.

[0012] With the above technical solution, the detection process is as follows: the filter is placed on the through gauge mounting seat manually or by a manipulator, and then the filter is pressed down so that the through gauge can contact the threaded hole and detect the threaded hole. During this process, according to the downward pressure distance of the filter, the through gauge and the through gauge mounting seat will move downward under the action of the linkage structure. The motor then drives the rotating sleeve to rotate, and the rotating sleeve drives the through gauge mounting seat to rotate through the linkage structure, and the through gauge mounting seat drives the through gauge to rotate. If the filter is qualified, the through gauge is threadedly connected to the threaded hole and drives the filter to gradually move down to the preset position; if the filter is unqualified, the through gauge cannot be threadedly connected to the threaded hole. Due to the linkage structure, the through gauge and the through gauge mounting seat gradually move down. The contact relationship between the through gauge and the filter is flexible, and there is no mutual offset relationship in the prior art, which avoids the phenomenon of the through gauge and the filter being stuck. In this way, the force on the guide component is also more uniform, which improves the reliability and stability of the entire thread detection mechanism. And because the filter is unqualified, the through gauge will not be connected to the threaded hole, so the unqualified filter will not move down a long distance, which will not affect the detection of qualified filters elsewhere. During this process, the motor still rotates normally, and the motor overload is avoided. In summary, not only can the thread detection of the filter be realized, but also in the process of detecting the filter, the through gauge will float up and down under the action of the linkage structure to avoid the unqualified filter from spinning, and also avoid the jamming between the filter and the through gauge. In this way, the through gauge mounting seat does not need to overcome the force of the plunger screw, reducing the wear of the plunger screw, the motor, the through gauge, the filter threaded hole, etc. The motor continues to rotate through the rotating sleeve, and the motor will not be overloaded, and the guide assembly is evenly stressed. Reduce the later maintenance cost and extend the service life of the thread detection mechanism.

[0013] Furthermore, since unqualified filters will not spin or get stuck with the gauge, there is no need to manually remove the unqualified products immediately. The unqualified filters can be removed after a single inspection is completed, reducing the workload of workers and improving the safety of the working environment.

[0014] It should be noted that: 1. The purpose of "pressing the filter down" is to facilitate the contact of the through gauge with the threaded hole, so as to detect the threaded hole of the filter more smoothly. 2. "The through gauge mounting seat can rotate with the rotating sleeve and / or reciprocate relative to the rotating sleeve along the axis of the rotating sleeve through a linkage structure" means that the through gauge mounting seat and the rotating sleeve can rotate synchronously, or the two can move relative to each other, or the two can move relative to each other while rotating synchronously. All three working states may occur, which changes according to the specific process of filter thread detection. For example, when placing the filter on the positioning mold base, it is necessary to press the filter down a certain distance. During this process, the motor can drive the through gauge to rotate. Due to the linkage structure, the through gauge mounting seat will move downward relative to the rotating sleeve due to the downward pressure of the filter.

[0015] The above-mentioned filter thread detection mechanism can be further configured as follows: the linkage structure includes a first square column arranged at the lower end of the through gauge mounting seat, a first square hole adapted to the first square column is provided in the rotating sleeve, and the through gauge mounting seat is linked with a first spring.

[0016] By adopting the above technical solution, the synchronous rotation connection between the gauge mounting seat and the rotating sleeve can be realized through the first square column and the first square hole, that is, the motor drives the rotating sleeve to rotate, so the square shape can also be transformed into other shapes, as long as the synchronous rotation connection between the gauge mounting seat and the rotating sleeve can be realized. The rotating sleeve drives the gauge mounting seat to rotate, and the gauge follows the gauge mounting seat to rotate to detect the threaded hole of the filter; by designing the first spring, the gauge can float up and down, and under the downward pressure of the filter, the gauge and the gauge mounting seat move downward relative to the rotating sleeve, so that the gauge can detect the threaded hole of the filter. When the detected filter is unqualified, the gauge will not get stuck with the filter, and the filter will not rotate.

[0017] The above-mentioned filter thread detection mechanism can be further configured as follows: the upper part of the through gauge mounting seat is provided with an annular flange strip protruding toward the outside, the upper end of the rotating sleeve is provided with a first spring mounting groove, the first spring sleeve is inserted into the first spring mounting groove and the first spring sleeve is arranged on the outer periphery of the through gauge mounting seat, the upper end of the first spring contacts with the annular flange strip, and the lower end contacts with the bottom of the first spring mounting groove.

[0018] By adopting the above technical solution, the annular flange strip and the first spring mounting groove are designed to provide a good working environment for the first spring, so that the first spring can stably expand and contract, and the through gauge floats up and down.

[0019] The above-mentioned filter thread detection mechanism can be further configured as follows: the upper end of the rotating sleeve is connected to an upper flange seat by screws, a first mounting hole is penetrated through the middle of the upper flange seat, the first mounting hole is sleeved on the outer periphery of the through gauge mounting seat and the first mounting hole is distributed above the annular flange strip, and the inner diameter of the first mounting hole is smaller than the outer diameter of the annular flange strip.

[0020] With the above technical solution, the upper flange seat is connected to the rotating sleeve by screws, which is convenient for the installation and removal of the first spring. The first mounting hole is designed to avoid interference between the upper flange seat and the through gauge mounting seat when floating up and down. The purpose of "the inner diameter of the first mounting hole is smaller than the outer diameter of the annular flange strip" is to limit the annular flange strip and avoid excessive lifting of the through gauge and the through gauge mounting seat.

[0021] The above-mentioned filter thread detection mechanism can be further configured as follows: the lower end of the rotating sleeve is connected to a lower flange seat by screws, the first square hole is arranged at the upper end of the lower flange seat, the lower end of the lower flange seat is provided with a connecting shaft, the connecting shaft is linked to a coupling, and the coupling is linked to the output end of the motor.

[0022] By adopting the above technical solution, the first square hole is set at the upper end of the lower flange seat, which is more convenient to process than setting the first square hole in the rotating sleeve. A coupling is added, and the rotating sleeve and the motor are linked through the connecting shaft at the lower end of the lower flange seat, which can effectively transmit torque and motion, reduce vibration and impact of the mechanical transmission system, have the ability to compensate for the offset of the two axes, and improve the dynamic performance and service life of the motor, rotating sleeve, etc.

[0023] The above-mentioned filter thread detection mechanism can be further configured as follows: a quick-change part is provided between the through gauge and the through gauge mounting seat, a through gauge mounting hole is penetrated in the quick-change part, and the side wall of the through gauge mounting hole is connected with at least one group of steel ball mounting holes, one end of the steel ball mounting hole is connected with the tapered hole, a steel ball is arranged in the steel ball mounting hole, a tapered hole is provided at the upper end of the through gauge mounting seat, the large end of the tapered hole faces the motor, and the small end of the tapered hole faces the through gauge, the quick-change part is inserted in the tapered hole, the large end of the tapered hole is connected with a second spring mounting groove, a second spring is arranged in the second spring mounting groove, one end of the second spring is connected with the lower end of the quick-change part, and the other end is connected with the bottom of the second spring mounting groove, the bottom of the second spring mounting groove is connected with a second square hole, and the lower end of the through gauge is provided with a second square column that can be adapted to the second square hole.

[0024] With the above technical solution, when disassembling, press the quick-change part downward, and the steel ball moves downward with the quick-change part until the steel ball approaches the large end of the tapered hole, so that the steel ball can move in the steel ball installation hole, and the steel ball is no longer in conflict with the through gauge, and the through gauge can be pulled out at this time. After the through gauge is pulled out, the quick-change part automatically resets upward under the action of the second spring. When installing, press the quick-change part downward again, and the steel ball moves downward with the quick-change part until the steel ball approaches the large end of the tapered hole, so that the steel ball can move in the steel ball installation hole, and the steel ball is no longer in conflict with the through gauge, and the through gauge is inserted until the second square column at the lower end of the through gauge is inserted into the second square hole, and the quick-change part is released. The second spring resets the quick-change part until the steel ball approaches the small end of the tapered hole, and the steel ball is squeezed to the side to conflict with the through gauge, so that the through gauge is stably installed on the through gauge mounting seat. The second square column and the second square hole are used to realize the synchronous rotation connection between the through gauge mounting seat and the through gauge, and the shapes of the "second square column and the second square hole" can be changed as long as the synchronous rotation connection between the through gauge mounting seat and the through gauge can be realized. Furthermore, a stop surface can be set at the upper end of the quick-change part to prevent the quick-change part from excessively moving downward when pressed down, thereby improving the flexibility of the quick-change operation.

[0025] The filter thread detection mechanism can be further configured as follows: the side wall of the tapered hole is connected to a quick-release hole, the quick-release hole passes through the through gauge mounting seat, and the quick-release hole is located at the end away from the tapered hole and connected to a limiting pin.

[0026] By adopting the above technical solution, the limit pin is taken out, and the tapered hole is aligned with the quick-release hole. The steel ball can be installed from the quick-release hole. After the steel ball is installed, the limit pin can be installed back, which is easy to operate.

[0027] The above-mentioned filter thread detection mechanism can be further configured as follows: the guide assembly includes several groups of guide rods that are arranged in a direction parallel to the axis of the through gauge, the upper ends of the guide rods are connected to the positioning die base through screws, the frame is provided with a linear bearing that is slidably connected to the guide rods, and the outer periphery of the guide rods is provided with a third spring, the upper end of the third spring is in contact with the positioning die base, and the lower end is in contact with the linear bearing.

[0028] With the above technical solution, when the filter is qualified, the positioning die seat will drive the guide rod to move down to the preset position, and the third spring will be compressed again during the process. After the test is completed, the filter is taken out, and the third spring will drive the guide rod to automatically reset. Adding linear bearings can improve the movement stability of the guide rod and prevent it from shaking left and right. When the filter is unqualified, the positioning die seat will move down under the downward pressure of the filter, but will not drive the guide rod to move to the preset position. Once the filter is taken out, the third spring will drive the guide rod to automatically reset.

[0029] The filter thread detection mechanism may be further configured as follows: a sensor is provided below the guide rod, a sheet metal part is connected below the frame via screws, a strip hole is provided on the sheet metal part, and the sensor is inserted into the strip hole.

[0030] The above technical solution is adopted, and a sensor is set. When the filter is a qualified product, the positioning mold base will drive the guide rod to move down to the preset position. Once the sensor detects the guide rod, it will send a signal that the product is qualified. When the filter is an unqualified product, the positioning mold base will move downward under the downward pressure of the filter, but will not drive the guide rod to move to the preset position, and the sensor will not detect the guide rod at this time. Automatically judging whether the threaded hole of the filter is qualified through signal transmission helps the detection mechanism designed in this application to be applied to fully automatic production lines. Furthermore, sheet metal parts are added to facilitate the installation of sensors, and strip holes are designed to adjust the position of the sensors according to actual conditions, thereby expanding the adaptability of the detection mechanism and being able to be applied to filters of different specifications and types for detection.

[0031] The above-mentioned filter thread detection mechanism can be further configured as follows: the frame is provided with a group of positioning holes corresponding to each group of rotating sleeves, the positioning holes are clearance-matched with the rotating sleeves, the outer periphery of the rotating sleeves is linked with positioning sleeves through bearings, the positioning sleeves are distributed below the positioning holes and are connected to the frame through screws, the lower end of the positioning sleeves is connected to a plurality of groups of connecting rods, the lower end of the connecting rods is connected to a mounting flange plate, and the motor is fixed to the mounting flange plate.

[0032] The above technical solution is adopted to set the positioning hole to avoid the interference between the rotating sleeve and the frame when rotating. The positioning sleeve, connecting rod and mounting flange plate are added to realize the fixed installation of the motor on the one hand, and the rotating sleeve and the positioning sleeve are linked by the bearing to guide the rotating sleeve and improve the working stability of the rotating sleeve.

[0033] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0035] Figure 2 It is a schematic diagram of an overall cross-section of an embodiment of the utility model;

[0036] Figure 3 It is an explosion diagram of an embodiment of the utility model;

[0037] Figure 4 It is a partial structural schematic diagram of an embodiment of the utility model;

[0038] Figure 5 A schematic diagram of a rotating sleeve according to an embodiment of the utility model;

[0039] Figure 6 A schematic top view of a quick-change member according to an embodiment of the utility model;

[0040] Figure 7 for Figure 6 Schematic diagram of the AA section;

[0041] Figure 8 This is a schematic diagram of the assembly of the quick-change member, the through gauge, and the through gauge mounting seat of the embodiment of the utility model;

[0042] Label annotation: positioning mold base 1, motor 2, through gauge mounting seat 3, through gauge 4, detection clearance hole 5, rotating sleeve 6, first square column 7, first square hole 8, first spring 9, annular flange strip 10, first spring mounting groove 11, upper flange seat 12, first mounting hole 13, lower flange seat 14, connecting shaft 15, coupling 16, quick change part 17, through gauge mounting hole 18, steel ball mounting hole 19, tapered hole 20, steel ball 21, second spring mounting groove 22, second spring 23, second square hole 24, second square column 25, third spring 26, sensor 27, sheet metal 28, strip hole 29, positioning hole 30, positioning sleeve 31, connecting rod 32, mounting flange plate 33, quick release hole 34, limit pin 35, guide rod 35, linear bearing 37. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] like Figures 1 to 8 The filter thread detection mechanism shown includes a frame, a positioning die base 1, and a motor 2. A through gauge mounting seat 3 is provided between the motor 2 and the positioning die base 1. A through gauge 4 is connected to the top of the through gauge mounting seat 3. A detection clearance hole 5 through which the through gauge 4 can pass is penetrated in the middle of the positioning die base 1. The positioning die base 1 is linked with a guide component. A rotating sleeve 6 is provided between the through gauge mounting seat 3 and the motor 2. The lower end of the rotating sleeve 6 is linked with the output end of the motor 2. A linkage structure is provided between the rotating sleeve 6 and the through gauge mounting seat 3.

[0045] The linkage structure includes a first square column 7 disposed at the lower end of the gauge mounting seat 3, a first square hole 8 adapted to the first square column 7 is disposed in the rotating sleeve 6, and the gauge mounting seat 3 is linked with a first spring 9. Through the first square column 7 and the first square hole 8, the synchronous rotation connection between the gauge mounting seat 3 and the rotating sleeve 6 can be achieved, that is, the motor 2 drives the rotating sleeve 6 to rotate, so the first square hole 8 and the first square column 7 can also be transformed into other shapes, as long as the synchronous rotation connection between the gauge mounting seat and the rotating sleeve 6 can be achieved.

[0046] The rotating sleeve 6 drives the through gauge mounting seat 3 to rotate, and the through gauge 4 follows the through gauge mounting seat 3 to rotate to detect the threaded hole of the filter; by designing the first spring 9, the through gauge 4 can float up and down, and under the downward pressure of the filter, the through gauge 4 and the through gauge mounting seat 3 move downward relative to the rotating sleeve 6, so that the through gauge 4 can detect the threaded hole of the filter. When the detected filter is unqualified, the through gauge 4 will not be stuck with the filter, and the filter will not rotate.

[0047] The upper part of the through gauge mounting seat 3 is provided with an annular flange strip 10 protruding toward the outside, and the upper end of the rotating sleeve 6 is provided with a first spring mounting groove 11. The first spring 9 is inserted in the first spring mounting groove 11 and the first spring 9 is sleeved on the outer periphery of the through gauge mounting seat 3. The upper end of the first spring 9 contacts the annular flange strip 10, and the lower end contacts the bottom of the first spring mounting groove 11. The design of the annular flange strip 10 and the first spring mounting groove 11 provides a good working environment for the first spring 9, so that the first spring 9 can stably expand and contract, and the through gauge 4 floats up and down.

[0048] The upper end of the rotating sleeve 6 is connected to the upper flange seat 12 by screws, and the middle of the upper flange seat 12 is penetrated by a first mounting hole 13, which is sleeved on the outer periphery of the through gauge mounting seat 3 and distributed above the annular flange strip 10, and the inner diameter of the first mounting hole 13 is smaller than the outer diameter of the annular flange strip 10. The upper flange seat 12 is connected to the rotating sleeve 6 by screws, which is convenient for the installation and removal of the first spring 9. The first mounting hole 13 is designed to avoid interference between the through gauge mounting seat 3 and the upper flange seat 12 when floating up and down. The purpose of "the inner diameter of the first mounting hole 13 is smaller than the outer diameter of the annular flange strip 10" is to limit the annular flange strip 10 and avoid excessive lifting of the through gauge 4 and the through gauge mounting seat 3.

[0049] The lower end of the rotating sleeve 6 is connected to the lower flange seat 14 by screws, the first square hole 8 is set at the upper end of the lower flange seat 14, the lower end of the lower flange seat 14 is provided with a connecting shaft 15, the connecting shaft 15 is linked with a coupling 16, and the coupling 16 is linked with the output end of the motor 2. Compared with setting the first square hole 8 in the rotating sleeve 6, setting the first square hole 8 at the upper end of the lower flange seat 14 is more convenient for processing. Adding the coupling 16 and linking the rotating sleeve 6 with the motor 2 through the connecting shaft 15 at the lower end of the lower flange seat 14 can effectively transmit torque and motion, while reducing the vibration and impact of the mechanical transmission system, having the ability to compensate for the offset of the two axes, and improving the dynamic performance and service life of the motor 2, the rotating sleeve 6, etc.

[0050] A quick-change piece 17 is provided between the through gauge 4 and the through gauge mounting seat 3, and a through gauge mounting hole 18 is penetrated in the quick-change piece 17. The side wall of the through gauge mounting hole 18 is connected with three groups of steel ball mounting holes 19, one end of the steel ball mounting hole 19 is connected with the tapered hole 20, and a steel ball 21 is arranged in the steel ball mounting hole 19. A tapered hole 20 is provided at the upper end of the through gauge mounting seat 3, the large end of the tapered hole 20 faces the motor 2, and the small end of the tapered hole 20 faces the through gauge 4, the quick-change piece 17 is inserted in the tapered hole 20, and the large end of the tapered hole 20 is connected with a second spring mounting groove 22, and a second spring 23 is arranged in the second spring mounting groove 22, one end of the second spring 23 is connected to the lower end of the quick-change piece 17, and the other end is connected to the bottom of the second spring mounting groove 22, and the bottom of the second spring mounting groove 22 is connected with a second square hole 24, and the lower end of the through gauge 4 is provided with a second square column 25 that can adapt to the second square hole 24. When disassembling, the quick-change member 17 is pressed downward, and the steel ball 21 moves downward with the quick-change member 17 until the steel ball 21 approaches the large end of the tapered hole 20, so that the steel ball 21 can move in the steel ball mounting hole 19, and there is no conflict between the steel ball 21 and the through gauge 4, and the through gauge 4 can be pulled out at this time. After the through gauge 4 is pulled out, the quick-change member 17 automatically resets upward under the action of the second spring 23. During installation, the quick-change component 17 is pressed downward again, and the steel ball 21 moves downward with the quick-change component 17 until the steel ball 21 approaches the large end of the tapered hole 20, so that the steel ball 21 can move in the steel ball mounting hole 19, and the steel ball 21 is no longer in a conflicting relationship with the through gauge 4. The through gauge 4 is inserted until the second square column 25 at the lower end of the through gauge 4 is inserted into the second square hole 24, and the quick-change component 17 is released. The second spring 23 resets the quick-change component 17 until the steel ball 21 approaches the small end of the tapered hole 20, and the steel ball 21 is squeezed to the side to conflict with the through gauge 4, so that the through gauge 4 is stably installed on the through gauge mounting seat 3. Among them, the role of the second square column 25 and the second square hole 24 is to realize the synchronous rotation connection between the through gauge mounting seat 3 and the through gauge 4, and the shape of the "second square column 25 and the second square hole 24" can be changed, as long as the synchronous rotation connection between the through gauge mounting seat 3 and the through gauge 4 can be realized. Furthermore, a stop surface may be provided at the upper end of the quick-change member 17 to prevent the quick-change member 17 from excessively moving downward when pressed downward, thereby improving the flexibility of the quick-change operation.

[0051] The side wall of the tapered hole 20 is connected with a quick-install hole 34, which penetrates the through gauge mounting seat 3, and the quick-install hole 34 is located at the end away from the tapered hole 20 and connected with a limit pin 35. The limit pin 35 is taken out, and the tapered hole 20 is aligned with the quick-install hole 34, and the steel ball 21 can be installed from the quick-install hole 34. After the steel ball 21 is installed, the limit pin 35 can be installed again, which is convenient to operate.

[0052] The guide assembly includes three groups of guide rods 35 which are arranged in parallel with the axis direction of the through gauge 4. The upper end of the guide rod 35 is connected to the positioning die seat 1 by a screw. A linear bearing 37 which is slidably connected to the guide rod 35 is provided on the frame. A third spring 26 is sleeved on the outer periphery of the guide rod 35. The upper end of the third spring 26 contacts the positioning die seat 1 and the lower end contacts the linear bearing 37. When the filter is a qualified product, the positioning die seat 1 will drive the guide rod 35 to move down to a preset position, and the third spring 26 will be compressed in the process again. After the inspection is completed, the filter is taken out, and the third spring 26 will drive the guide rod 35 to automatically reset. The linear bearing 37 is added to improve the moving stability of the guide rod 35 and prevent it from shaking left and right. When the filter is a defective product, the positioning die seat 1 will move down under the downward pressure of the filter, but will not drive the guide rod 35 to move to the preset position. Once the filter is taken out, the third spring 26 will drive the guide rod 35 to automatically reset.

[0053] A sensor 27 is provided below the guide rod 35, and a sheet metal part 28 is connected below the frame by screws. A strip hole 29 is provided on the sheet metal part 28, and the sensor 27 is inserted at the strip hole 29. The sensor 27 is provided. When the filter is a qualified product, the positioning die seat 1 will drive the guide rod 35 to move down to the preset position. Once the sensor 27 detects the guide rod 35, it will send a signal that the product is qualified. When the filter is a defective product, the positioning die seat 1 will move down under the downward pressure of the filter, but will not drive the guide rod 35 to move to the preset position. At this time, the sensor 27 will not detect the guide rod 35. Automatically judging whether the threaded hole of the filter is qualified through signal transmission is helpful for the detection mechanism designed in this application to be applied to the fully automatic production line. Further, the sheet metal part 28 is added to facilitate the installation of the sensor 27, and the strip hole 29 is designed to adjust the position of the sensor 27 according to the actual situation, expand the adaptability of the detection mechanism, and can be applied to filters of different specifications and types for detection.

[0054] The frame is provided with a group of positioning holes 30 corresponding to each group of rotating sleeves 6. The positioning holes 30 are clearance-matched with the rotating sleeves 6. The outer periphery of the rotating sleeves 6 is linked with positioning sleeves 31 through bearings. The positioning sleeves 31 are distributed below the positioning holes 30 and are connected to the frame through screws. The lower ends of the positioning sleeves 31 are connected with three groups of connecting rods 32. The lower ends of the connecting rods 32 are connected with mounting flange plates 33, and the motor 2 is fixed on the mounting flange plates 33. The positioning holes 30 are provided to avoid interference between the rotating sleeves 6 and the frame when they rotate. The positioning sleeves 31, connecting rods 32, and mounting flange plates 33 are added. On the one hand, the fixed installation of the motor 2 is realized. On the other hand, the rotating sleeves 6 and the positioning sleeves 31 are linked with each other through bearings to guide the rotating sleeves 6 and improve the working stability of the rotating sleeves 6.

[0055] The working principle of this embodiment is as follows:

[0056] Use manual labor or a robot to place the filter on the through gauge mounting seat 3, and then press down the filter so that the through gauge 4 can contact the threaded hole and detect the threaded hole. In this process, according to the downward pressure distance of the filter, the through gauge 4 and the through gauge mounting seat 3 will move downward under the action of the linkage structure. Next, the motor 2 drives the rotating sleeve 6 to rotate, and the rotating sleeve 6 drives the through gauge mounting seat 3 to rotate through the linkage structure, and the through gauge mounting seat 3 drives the through gauge 4 to rotate. It should be noted that the purpose of "pressing down the filter" is to facilitate the contact of the through gauge 4 with the threaded hole, so as to detect the threaded hole of the filter more smoothly.

[0057] If the filter is qualified, the through gauge 4 is threadedly connected with the threaded hole, and drives the filter to gradually move down to the preset position. In this process, the positioning mold base 1 drives the guide rod 35 to move down to the preset position, and once the sensor 27 detects the guide rod 35, it sends a signal that the product is qualified.

[0058] If the filter is unqualified, the through gauge 4 cannot be threadedly connected with the threaded hole. Due to the design of the linkage structure, the through gauge 4 and the through gauge mounting seat 3 will gradually move down with the filter. The through gauge 4 and the filter are in a flexible contact relationship, and there is no mutual hedging relationship in the prior art, which avoids the phenomenon of the through gauge 4 and the filter getting stuck. And because the filter is unqualified, the through gauge 4 will not be connected with the threaded hole, so the unqualified filter will not move down a long distance. Although the positioning mold seat 1 will move down under the downward pressure of the filter, it will not drive the guide rod 35 to move to the preset position. At this time, the sensor 27 will not detect the guide rod 35. Therefore, even if an unqualified filter is detected, it will not affect the detection of qualified filters elsewhere. During this process, the motor 2 still rotates normally, and the overload of the motor 2 is also avoided.

[0059] In summary, this embodiment has the following advantages:

[0060] First, it can not only realize the thread detection of the filter, but also in the process of detecting the filter, the through gauge 4 will float up and down under the action of the linkage structure to avoid the unqualified filter from spinning, and also avoid the jamming phenomenon between the filter and the through gauge 4. In this way, the through gauge mounting seat 3 does not need to overcome the force of the plunger screw, reducing the wear of the plunger screw, the motor 2, the through gauge 4, the filter threaded hole, etc. The motor 2 can rotate continuously without overloading, and the guide component is evenly stressed. Reduce the later maintenance cost and extend the service life of the thread detection mechanism.

[0061] Secondly, since unqualified filters will not spin or get stuck with the pass gauge 4, there is no need to manually remove the unqualified products immediately. The unqualified filters can be removed after a single inspection is completed, which reduces the workload of workers and improves the safety of the working environment.

[0062] Thirdly, by providing the quick-change part 17, the steel ball 21, the second spring 23, the tapered hole 20, etc., the quick change of the through gauge 4 can be achieved to adapt to the detection of filters of different specifications and types, thereby improving the adaptability of this embodiment.

Claims

1. A filter thread detection mechanism, comprising a frame, a positioning die seat, and a motor, wherein a through gauge mounting seat is provided between the motor and the positioning die seat, a through gauge is connected to the top of the through gauge mounting seat, a detection clearance hole through which the through gauge can pass is penetrated in the middle of the positioning die seat, and the positioning die seat is linked with a guide assembly, characterized in that: A rotating sleeve is provided between the through gauge mounting seat and the motor, the lower end of the rotating sleeve is linked to the output end of the motor, a linkage structure is provided between the rotating sleeve and the through gauge mounting seat, and the through gauge mounting seat can rotate with the rotating sleeve and / or reciprocate relative to the rotating sleeve along the axis direction of the rotating sleeve through the linkage structure.

2. The filter thread detection mechanism according to claim 1, characterized in that: The linkage structure comprises a first square column arranged at the lower end of the through gauge mounting seat, a first square hole adapted to the first square column is arranged in the rotating sleeve, and the through gauge mounting seat is linked with a first spring.

3. The filter thread detection mechanism according to claim 2, characterized in that: The upper part of the through gauge mounting seat is provided with an annular flange strip protruding toward the outside, and the upper end of the rotating sleeve is provided with a first spring mounting groove. The first spring sleeve is inserted into the first spring mounting groove and the first spring sleeve is arranged on the outer periphery of the through gauge mounting seat. The upper end of the first spring contacts the annular flange strip, and the lower end contacts the bottom of the first spring mounting groove.

4. The filter thread detection mechanism according to claim 3, characterized in that: The upper end of the rotating sleeve is connected to an upper flange seat by screws, and a first mounting hole is penetrated in the middle of the upper flange seat. The first mounting hole is sleeved on the outer periphery of the through gauge mounting seat and the first mounting hole is distributed above the annular flange strip, and the inner diameter of the first mounting hole is smaller than the outer diameter of the annular flange strip.

5. The filter thread detection mechanism according to claim 4, characterized in that: The lower end of the rotating sleeve is connected to a lower flange seat by screws, the first square hole is arranged at the upper end of the lower flange seat, the lower end of the lower flange seat is provided with a connecting shaft, the connecting shaft is linked with a coupling, and the coupling is linked with the output end of the motor.

6. The filter thread detection mechanism according to any one of claims 1 to 5, characterized in that: A quick-change piece is provided between the through gauge and the through gauge mounting seat, a through gauge mounting hole passes through the quick-change piece, at least one group of steel ball mounting holes are connected to the side wall of the through gauge mounting hole, one end of the steel ball mounting hole is connected to the tapered hole, a steel ball is arranged in the steel ball mounting hole, a tapered hole is provided at the upper end of the through gauge mounting seat, the large end of the tapered hole faces the motor, and the small end of the tapered hole faces the through gauge, the quick-change piece is inserted in the tapered hole, the large end of the tapered hole is connected to a second spring mounting groove, a second spring is arranged in the second spring mounting groove, one end of the second spring is connected to the lower end of the quick-change piece, and the other end is connected to the bottom of the second spring mounting groove, the bottom of the second spring mounting groove is connected to a second square hole, and the lower end of the through gauge is provided with a second square column that can be adapted to the second square hole.

7. The filter thread detection mechanism according to claim 6, characterized in that: The side wall of the tapered hole is connected with a quick-install hole, the quick-install hole penetrates the through gauge mounting seat, and the quick-install hole is located at the end away from the tapered hole and connected with a limiting pin.

8. The filter thread detection mechanism according to any one of claims 1 to 5, characterized in that: The guide assembly includes several groups of guide rods that are arranged in a direction parallel to the axis of the through gauge. The upper ends of the guide rods are connected to the positioning die base through screws. The frame is provided with linear bearings that are slidably connected to the guide rods. A third spring is sleeved on the outer periphery of the guide rods. The upper end of the third spring is in contact with the positioning die base, and the lower end is in contact with the linear bearing.

9. The filter thread detection mechanism according to claim 8, characterized in that: A sensor is arranged below the guide rod, a sheet metal part is connected below the frame via screws, a strip hole is arranged on the sheet metal part, and the sensor is inserted in the strip hole.

10. The filter thread detection mechanism according to any one of claims 1 to 5, characterized in that: The frame is provided with a group of positioning holes corresponding to each group of rotating sleeves, the positioning holes are clearance-matched with the rotating sleeves, the outer circumference of the rotating sleeves is linked with positioning sleeves through bearings, the positioning sleeves are distributed below the positioning holes and are connected to the frame through screws, the lower end of the positioning sleeves is connected to a plurality of groups of connecting rods, the lower end of the connecting rods is connected to a mounting flange plate, and the motor is fixed to the mounting flange plate.

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