A sleeve part direction identification device and a sleeve part direction identification method

Abstract

The application relates to a sleeve part direction identification device and a direction identification method, and belongs to the technical field of part identification. The device comprises a misplacement mechanism, a rotating mechanism, a probe detection mechanism and a direction optical fiber sensor. The misplacement mechanism comprises a misplacement plate, a misplacement rod and a material ejection assembly. The misplacement plate is provided with a misplacement hole, a feeding hole, a probe detection hole and a discharging hole. The misplacement rod is movably arranged in the misplacement hole, and the front end of the misplacement rod is provided with a material placing hole. The rotating mechanism comprises a rotating motor and a second linear driving mechanism. The rotating motor is connected with the misplacement rod. The second linear driving mechanism is connected with the rotating motor. The probe detection mechanism comprises a detection probe, a probe guide block, a third linear driving mechanism and the direction optical fiber sensor. The third linear driving mechanism drives the probe guide block to slide along the track plate. The detection probe is movably arranged on the probe guide block. The optical fiber head position of the direction optical fiber sensor is fixed relative to the probe guide block. The application can solve the problems of low reliability and slow speed of sleeve part direction identification.

Description

Technical Field

[0001] This invention belongs to the field of parts identification technology, specifically relating to a direction identification device and method for sleeve-type parts. Background Technology

[0002] Spring-loaded contact elements have advantages such as low contact resistance, high contact reliability, good vibration resistance, and smooth insertion and removal. In recent years, they have been widely used in medical equipment, scientific instruments, industrial equipment, transportation equipment, data transmission, aerospace and military fields, with broad market demand.

[0003] In wire spring hole contact components, the front sleeve of the wire spring hole is a key part. Because the inner diameters at both ends of the front sleeve are different, it has a certain directionality. Therefore, the direction of the front sleeve needs to be identified during the production of wire spring hole contact components. Although the inner diameters at both ends of the front sleeve are unequal, theoretically they can be identified through visual inspection. However, because the difference in diameter between the two ends is small, visual inspection is easily interfered with, resulting in low accuracy and slow speed in direction identification. Furthermore, the front sleeve is a thin-walled sleeve part, which is prone to deformation, affecting the inspection results.

[0004] With the development of automation technology, higher requirements have been placed on the operating efficiency and quality consistency of equipment. Therefore, the feeding problem caused by the direction recognition of the front sleeve of the wire spring hole has always restricted the improvement of the production efficiency of the wire spring hole contact parts.

[0005] Besides the front sleeve of the wire spring hole, when the difference in the inner hole diameter at both ends of other sleeve-type parts is small, it is also difficult to identify the orientation of the parts through visual inspection, which will also restrict the improvement of production efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a direction recognition device and method for sleeve-type parts, which achieves high-speed detection and feeding of sleeve-type parts such as wire spring hole front sleeves through probe detection, and solves the problems of low reliability and slow speed in direction recognition of sleeve-type parts such as wire spring hole front sleeves.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a direction identification device for sleeve-type parts, comprising:

[0008] The misalignment mechanism includes a misalignment plate, a misalignment rod, and a top-loading assembly. The misalignment plate has a misalignment channel, a feed hole, a probe detection hole, and a discharge hole. The probe detection hole communicates with the misalignment channel, and the discharge hole penetrates the misalignment plate vertically and communicates perpendicularly with the misalignment channel. The discharge hole and the probe detection hole are located on the same plane. The misalignment rod is movably inserted into the misalignment channel, and the front end of the misalignment rod has a material placement hole for accommodating the part to be tested. The material placement hole is a through hole. The top-loading assembly includes a top-loading pin, one end of which is movably disposed in the discharge hole.

[0009] The rotating mechanism includes a rotary motor and a second linear drive mechanism. The rotary motor is connected to the material feeding rod to drive the material feeding rod to rotate within the material feeding channel. The second linear drive mechanism is connected to the rotary motor to drive the material feeding rod to move linearly within the material feeding channel, thereby aligning the material placement hole with the feed hole or probe detection hole.

[0010] The probe detection mechanism includes a detection probe, a probe guide block, a third linear drive mechanism, and a direction fiber optic sensor. The third linear drive mechanism drives the probe guide block to slide along the track plate. The detection probe is linearly movable and passes through the probe guide block. A probe reset spring is sleeved on the detection probe. The front end of the detection probe can be inserted into the probe detection hole. The diameter of the front end of the detection probe is larger than the inner diameter of the small diameter end of the part to be tested and smaller than the inner diameter of the large diameter end of the part to be tested. The fiber optic head of the direction fiber optic sensor is fixed relative to the probe guide block and is used to detect the relative displacement between the detection probe and the probe guide block.

[0011] Its beneficial effects are as follows: This invention uses a guide bar to move the part to be tested to the probe detection hole position. Then, a direction fiber optic sensor collects the data on whether the detection probe can be inserted into the part to determine the displacement corresponding to the large-diameter end and the small-diameter end of the part, thereby realizing the orientation identification of the part. After identification, the guide bar rotates the part to be tested 90° to the discharge direction, and finally, the ejector pin pushes out the guide plate. This invention can realize the automatic orientation identification of sleeve-type parts with unequal inner diameters at both ends, with high identification reliability and improved identification efficiency, which is conducive to the high-speed connection of this device with upstream or downstream processes.

[0012] Furthermore, the feed hole is located in front of the misalignment channel and communicates with the misalignment channel through a notch at the front end of the misalignment plate; a stop block is provided at the front end of the misalignment plate, one side of the stop block is movably sleeved on the stop guide pin, and the other side of the stop block is inserted into the notch to close the feed hole; the stop guide pin is fixed to the end of the misalignment plate, and a stop block reset spring is sleeved on the stop guide pin to push the stop block to reset.

[0013] Its beneficial effects are: the setting of the baffle block can close the feed hole in time, cut off the feed of the parts, and prevent the parts to be tested from entering the misfit plate when the misfit rod moves to the probe detection hole.

[0014] Furthermore, the front end of the misaligned plate is also provided with a limiting block, and the end face of the limiting block opposite to the feed hole is a limiting surface, which is used to position the parts entering the misaligned rod.

[0015] Its beneficial effect is that the limiting block can position the part to be tested entering the misalignment bar, and avoid the part to be tested not being fully entered, which would affect the movement of the misalignment bar in the misalignment channel.

[0016] Furthermore, the material placement hole at the front end of the feed rod is machined with a flat surface, which can fit into the limiting surface on the limiting block.

[0017] Its beneficial effect is that the cooperation between the front plane of the feed rod and the limiting block can further ensure the positioning effect of the part to be tested.

[0018] Furthermore, the front end of the misalignment rod is provided with an optical fiber detection hole, which intersects and connects with the material placement hole, and the diameter of the optical fiber detection hole is smaller than that of the part to be tested; the misalignment plate is also provided with a first optical fiber fixing block, which is provided with an optical fiber mounting hole. The optical fiber mounting hole is located in front of the misalignment channel and above the intersection of the feed hole axis and the misalignment channel axis. The optical fiber head of the feed optical fiber sensor is set in the optical fiber mounting hole and detects whether the part to be tested has entered the material placement hole through the optical fiber detection hole.

[0019] Its beneficial effect is that it can detect whether the part to be tested has entered the material placement hole of the feed bar.

[0020] Furthermore, the ejector assembly also includes an ejector pin fixing block and a first linear drive mechanism. The lower end of the ejector pin is fixedly connected to the ejector pin fixing block, and the ejector pin fixing block is connected to the first linear drive mechanism.

[0021] Its beneficial effect is that it limits the structure of the top material assembly.

[0022] Furthermore, the first linear drive mechanism is a first cylinder, and the cylinder rod of the first cylinder is connected to the ejector pin fixing block through a first floating joint.

[0023] Its beneficial effect is that by setting the first floating joint, the jamming caused by the first cylinder being directly connected to the ejector pin fixing block is avoided, which would lead to the cylinder not running smoothly.

[0024] Furthermore, the misaligned plate is fixed on the misaligned upright plate, and a vertical track is provided on the misaligned upright plate, with the top pin fixing block slidably connected to the vertical track.

[0025] Its beneficial effect is that it guides the up and down movement of the ejector pin, preventing it from tilting and getting stuck during ejection.

[0026] Furthermore, the second linear drive mechanism is a second cylinder, the cylinder rod of the second cylinder is connected to the fixed plate, the rotary motor is mounted on the fixed plate through the motor support, and a bearing seat is also provided on the fixed plate, the feed rod is connected to the bearing in the bearing seat.

[0027] Its beneficial effect is that the cooperation between the feed rod and the bearing makes the rotation of the feed rod more stable.

[0028] Furthermore, the feed bar is also equipped with a sensing plate, and the origin sensor used in conjunction with the sensing plate is set on the bearing seat.

[0029] Its beneficial effects are: when used in conjunction with the origin sensor, the induction plate can realize closed-loop control of the rotating motor, provide feedback on the real-time rotation angle of the misaligned rod, achieve precise positioning, and ensure that the misaligned rod can return to the same initial position after each start-up or reset.

[0030] Furthermore, the third linear drive mechanism is a third cylinder, and the cylinder rod of the third cylinder is connected to the probe guide block through a second floating joint.

[0031] Its beneficial effect is that by setting the second floating joint, the jamming caused by the direct connection of the third cylinder to the top probe guide block is avoided, which would lead to poor cylinder operation.

[0032] Furthermore, a second optical fiber fixing block is fixed on the probe guide block, and the second optical fiber fixing block is provided with an optical fiber hole, in which the optical fiber head of the directional optical fiber sensor is disposed.

[0033] Its beneficial effect is that it facilitates the installation of fiber optic connectors.

[0034] Furthermore, the detection probe is provided with a positioning structure, and the two ends of the probe reset spring rest on the front end face of the probe guide block and the positioning structure, respectively.

[0035] Its beneficial effect is that it facilitates the installation of the probe reset spring.

[0036] Furthermore, the positioning structure is a positioning pin or a positioning step set on the detection probe.

[0037] Its beneficial effect is that it limits the specific form of the positioning structure, making it easier to implement selectively.

[0038] Furthermore, it also includes a feeding mechanism for providing the parts to be tested to the feed hole of the misaligned plate.

[0039] Its beneficial effect is to improve the automation level of the device.

[0040] Furthermore, the feeding mechanism includes a vibrating feed pan and a linear vibrator. The linear vibrator includes a vibrator and a feed channel. The feed channel is connected to the vibrator, and one end of the feed channel is connected to the discharge port of the vibrating feed pan, while the other end is connected to the feed inlet. The vibration direction of the vibrator is directed towards the feed inlet.

[0041] Its beneficial effect is that it provides a specific structure for the feeding mechanism, which facilitates implementation.

[0042] This invention also proposes a method for orientation identification of sleeve-type parts. This method employs the aforementioned orientation identification device and includes the following steps:

[0043] First, the misalignment rod moves forward until the material placement hole and the feed hole are aligned. The part to be tested enters the material placement hole through the feed hole. The misalignment rod then carries the part to be tested to the material placement hole and the probe detection hole are aligned.

[0044] Then, the third linear drive mechanism drives the probe guide block to move forward, and determines whether the detection probe is in contact with the large-diameter end or the small-diameter end of the part to be tested based on the first detection result of the direction fiber optic sensor.

[0045] Subsequently, the probe guide block is reset, and the rotary motor drives the misalignment rod to rotate 180°, repeating the detection action of the detection probe to detect the other end of the part to be tested;

[0046] Finally, based on the two detection results from the direction fiber optic sensor, the rotary motor drives the misalignment rod to rotate 90° to the discharge direction of the part to be tested, and the ejector pin of the ejector assembly ejects the part to be tested from the top of the discharge hole, completing one direction identification of the part to be tested.

[0047] The beneficial effects of this invention are: this invention can realize the direction recognition of directional sleeve-type parts such as the front sleeve of the wire spring hole, with a high degree of automation, high recognition reliability, and fast recognition speed, which is conducive to improving the production cycle.

[0048] This invention effectively avoids judgment errors caused by sensor failure or foreign objects by repeatedly inspecting and identifying parts. At the same time, it can also screen and identify abnormal materials to prevent them from flowing to the next process.

[0049] Meanwhile, this invention achieves extremely high accuracy in high-speed material missorting and direction recognition through the linkage design of missorting and interception. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of the present invention in Example 1;

[0051] Figure 2 This is a schematic diagram of the splitting mechanism and the rotating mechanism in Example 1;

[0052] Figure 3 This is a partial structural diagram of the misalignment mechanism in Example 1;

[0053] Figure 4 This is a schematic diagram of the misaligned plate in Example 1;

[0054] Figure 5 This is a cross-sectional view of the misaligned plate in Example 1;

[0055] Figure 6 This is a schematic diagram of the material feeding rod in Example 1;

[0056] Figure 7 This is a schematic diagram showing the cooperation relationship between the misalignment plate, misalignment rod, and ejector pin of the misalignment mechanism in Example 1;

[0057] Figure 8 This is a schematic diagram of the probe detection mechanism in Example 1;

[0058] Figure 9 This is a partial structural diagram of the probe detection mechanism in Example 1;

[0059] Figure 10 This is a schematic diagram of the structure of the present invention in Example 2;

[0060] The markings in the diagram are as follows: 100, misalignment mechanism; 101, misalignment plate; 1011, feed hole; 1012, probe detection hole; 1013, discharge hole; 1014, misalignment channel; 102, first fiber optic fixing block; 1021, fiber optic mounting hole; 103, limit block; 104, stop block; 105, stop guide pin; 106, misalignment upright plate; 107, ejector pin fixing block; 108, first cylinder bracket; 109, first cylinder; 110, first floating joint; 111, ejector pin; 112, misalignment rod; 1121, material placement hole; 113, feed fiber optic sensor; 114, stop block reset spring.

[0061] 200. Rotating mechanism; 201. Base plate; 202. Second cylinder; 203. Fixed plate; 204. Rotary motor; 205. Motor support; 206. Bearing housing; 207. Origin sensor; 208. Sensing plate.

[0062] 300. Probe detection mechanism; 301. Fixed plate; 302. Third cylinder; 303. Track plate; 304. Third cylinder bracket; 305. Second floating joint; 306. Probe guide block; 307. Second fiber optic fixing block; 308. Directional fiber optic sensor; 309. Detection probe; 3091. Probe tail end; 3092. Positioning pin; 310. Probe reset spring.

[0063] 400. Feeding mechanism; 401. Vibrating feeder; 402. Linear vibrator;

[0064] 500. Fixed base. Detailed Implementation

[0065] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the invention in any way.

[0066] Example 1

[0067] See attached document Figure 1 As shown, a direction identification device for sleeve-type parts includes a misalignment mechanism 100, a rotation mechanism 200, and a probe detection mechanism 300.

[0068] like Figure 2 As shown, the misalignment mechanism 100 includes a misalignment plate 101, a first optical fiber fixing block 102, a limiting block 103, a blocking block 104, a blocking guide pin 105, a misalignment upright plate 106, a misalignment rod 112, a feeding optical fiber sensor 113, and a top material assembly.

[0069] like Figure 2-7 As shown, the upper end of the material misalignment plate 106 is fixedly connected to the lower surface of the material misalignment plate 101. A through material misalignment channel 1014 is provided inside the material misalignment plate 101. The material misalignment rod 112 is movably inserted into the material misalignment channel 1014. The rear end of the material misalignment rod 112 is connected to a rotating mechanism 200, which drives the material misalignment rod 112 to move axially or rotate within the material misalignment channel 1014. A through hole is provided at the front end of the material misalignment rod 112, with both ends opening onto the sides of the rod body. The through hole serves as a material placement hole 1121 for accommodating the part to be tested. The feed plate 101 has a feed hole 1011 and a probe detection hole 1012 on its side facing the probe detection mechanism 300. The feed hole 1011 is a through hole and is located in front of the feed channel 1014. The feed rod 112 moves forward so that the material placement hole 1121 is exposed in the feed channel 1014 and aligned with the feed hole 1011, so that the part to be tested can enter the material placement hole 1121 at the front end of the feed rod 112 through the feed hole 1011. The axial direction of the probe detection hole 1012 is perpendicular to the axial direction of the feed channel 1014, and the probe detection hole 1012 is connected to the feed channel 1014. The end of the misaligned plate 106 is provided with a stop block 104. The stop block 104 is movably mounted on the stop guide pin 105. The stop guide pin 105 is fixed to the end of the misaligned plate 101. A stop block reset spring 114 is sleeved on the stop guide pin 105. The two ends of the stop block reset spring 114 are respectively pressed against the stop block 104 and the head end of the stop guide pin 105 to push the stop block 104 to reset. When the baffle block 104 is in its initial position, it can block the feed hole 1011 from the inside to cut off the feed of the parts. When feeding is required, the feed rod 112 moves forward, extends out of the feed channel 1014, pushes the baffle block 104 away from the feed hole 1011, and squeezes the baffle block reset spring 114. When the feed rod 112 moves backward, the baffle block 104 is reset under the push of the baffle block reset spring 114, and blocks the feed hole 1011 again.

[0070] Furthermore, such as Figure 2 , 4As shown, the top surface of the misalignment plate 101 is provided with a first optical fiber fixing block 102. The optical fiber end of the feed optical fiber sensor 113 is inserted into the optical fiber mounting hole 1021 of the first optical fiber fixing block 102. The optical fiber mounting hole 1021 is located above the intersection of the axis of the feed hole 1011 and the axis of the misalignment channel 1014, and is used to detect whether the part to be tested has entered the material placement hole 1121 of the misalignment rod 112. For this purpose, the front end of the misalignment rod 112 is also provided with an optical fiber detection hole (not shown in the figure). The optical fiber detection hole crosses and communicates with the material placement hole 1121, and the diameter of the optical fiber detection hole is smaller than that of the part to be tested to prevent the part to be tested from falling out of the optical fiber detection hole. The feed optical fiber sensor 113 detects whether the part to be tested has entered the material placement hole 1121 through the optical fiber detection hole.

[0071] Further reference Figure 2 , 4 As shown, a limiting block 103 is also provided at the front end of the misaligned plate 101. The end face of the limiting block 103 facing the feed hole 1011 serves as a limiting surface, used to limit the part to be tested after feeding. Figure 6 As shown, to cooperate with the limiting function of the limiting block 103, the front end of the misalignment rod 112 is machined into a flat surface at both ends of the material placement hole 1121, so as to better fit with the limiting surface of the limiting block 103. When the end of the part to be tested that enters the material placement hole 1121 touches the limiting surface of the limiting block 103, it indicates that the part to be tested has completely entered the material placement hole 1121 and will not obstruct the movement and rotation of the misalignment rod 112 within the misalignment channel 1014.

[0072] By moving the feed rod 112 back and forth axially within the feed channel 1014, the part to be tested entering the feed plate 101 can be transferred from the feed hole 1011 to the probe detection hole 1012. With the cooperation of the rotating mechanism 200, the detection probe 309 of the probe detection mechanism 300 is used to detect and identify the large diameter end and small diameter end of the part to be tested. After identification, the ejector assembly ejects the part to be tested from the feed plate 101.

[0073] like Figure 3-5 As shown, the misalignment plate 101 is also provided with a vertically penetrating discharge hole 1013. The discharge hole 1013 intersects perpendicularly with and connects to the misalignment channel 1014, and the discharge hole 1013 is also perpendicular to and located on the same plane as the probe detection hole 1012. The ejector assembly can push the tested part from above the discharge hole 1013 onto the misalignment plate 101 by extending into the discharge hole 1013.

[0074] For example Figure 2 , 3As shown, the ejector assembly includes an ejector pin fixing block 107, a first cylinder bracket 108, a first cylinder 109, and an ejector pin 111. The first cylinder bracket 108 is fixed to the side of the offset plate 106, and the first cylinder 109 is fixed to the first cylinder bracket 108. The cylinder rod of the first cylinder 109 is connected to the ejector pin fixing block 107. The ejector pin 111 is installed on the upper part of the ejector pin fixing block 107 and extends upward into the discharge hole 1013. When the first cylinder 109 retracts, the ejector pin 111 is located below the offset channel 1014 to avoid affecting the movement and rotation of the offset rod 112. When it is necessary to eject the part to be tested, the cylinder rod of the first cylinder 109 extends, and the ejector pin 111 moves upward to eject the part to be tested from the upper end of the discharge hole 1013 to the offset plate 101.

[0075] Furthermore, the side of the offset plate 106 is also provided with a vertical track, and the top pin fixing block 107 is slidably disposed on the vertical track to provide guidance for the up and down movement of the top pin 111 and to prevent the top pin 111 from being tilted and stuck in the discharge hole 1013.

[0076] Furthermore, a first floating connector 110 is connected to the lower end of the ejector pin fixing block 107, and the first floating connector 110 is connected to the cylinder rod of the first cylinder 109. The first floating connector 110 is provided to avoid the jamming caused by the first cylinder 109 being directly connected to the ejector pin fixing block 107, which would lead to the cylinder not running smoothly.

[0077] The following is through Figure 7 The following provides a further explanation of the cooperation relationship between the misalignment plate 101, the misalignment rod 112, and the ejector pin 111 of the misalignment mechanism. Figure 7 In the process, the feeding rod 112 carries the part to be tested (not shown in the figure) to the probe detection hole 1012. After the detection probe identifies the direction of the large diameter end and the small diameter end of the part to be tested, the feeding rod 112 rotates 90° so that the material placement hole 1121 is aligned and connected with the discharge hole 1013. Then the ejector pin 111 moves upward and ejects the part to be tested in the material placement hole 1121 from the upper end of the discharge hole 1013.

[0078] As described above, the feed rod 112 needs to move linearly along the axial direction and rotate about its own axis. This requires the rotating mechanism 200 connected to the feed rod 112 to have not only a rotating function but also a linear drive function. Figure 2As shown, the rotating mechanism 200 includes a base plate 201, a second cylinder 202, a fixed plate 203, a rotary motor 204, a motor support 205, and a bearing seat 206. The cylinder body of the second cylinder 202 is fixed to the base plate 201. The fixed plate 203 is fixedly connected to the cylinder rod of the second cylinder 202. The rotary motor 204 is fixed to the motor support 205, and the motor support 205 is fixed to the fixed plate 203. The bearing seat 206 is also fixed in front of the fixed plate 203. The feed rod 112 passes through the bearing in the bearing seat 206 and is connected to the output shaft of the rotary motor 204, which drives the feed rod 112 to rotate. The second cylinder 202 drives the fixed plate 203 to move linearly through the extension and retraction of the cylinder rod, thereby realizing the linear movement of the rotary motor 204 on the fixed plate 203 and the feed rod 112 connected to the rotary motor 204.

[0079] Furthermore, the rotary motor 204 is a stepper motor or a servo motor to achieve precise control of the rotation angle.

[0080] Furthermore, the misalignment rod 112 is also equipped with a sensing plate 208, and an origin sensor 207 for use in conjunction with the sensing plate 208 is fixed on the bearing seat 206 to realize closed-loop control of the rotary motor 204, provide feedback on the real-time rotation angle of the misalignment rod 112, achieve precise positioning, and ensure that the misalignment rod 112 can return to the same initial position after each start-up or reset.

[0081] Figure 8 , 9The diagram shows the structure of the probe detection mechanism 300, which includes a fixed plate 301, a third cylinder 302, a track plate 303, a third cylinder support 304, a probe guide block 306, a second fiber optic fixing block 307, a direction fiber optic sensor 308, a detection probe 309, and a probe reset spring 310. The lower end of the fixed plate 301 is fixed to the base plate 201, and the upper end of the fixed plate 301 is fixedly connected to the track plate 303. The track surface of the track plate 303 faces upwards, and the third cylinder support 304 is fixedly installed at one end of the track surface. The third cylinder 302 is fixed to the third cylinder support 304, and the cylinder rod of the third cylinder 302 is connected to the probe guide block 306. The bottom of the probe guide block 306 is slidably disposed on the horizontal track of the track plate 303 and slides along the horizontal track under the drive of the third cylinder 302, with the sliding direction perpendicular to the linear movement direction of the feed rod 112. The detection probe 309 is movably inserted into the probe mounting hole of the probe guide block 306. The detection probe 309 can extend and retract along the probe mounting hole. A probe return spring 310 is sleeved on the detection probe 309. One end of the probe return spring 310 abuts against the end face of the probe guide block 306, and the other end abuts against the detection probe 309. When the detection probe 309 and the probe guide block 306 move in a relative linear motion under the action of external force, the probe return spring 310 is compressed and accumulates elastic potential energy. During the process of reducing or removing the external force, the elastic potential energy is released and pushes the detection probe 309 to return to its original position. The front end of the detection probe 309 is used to insert into the probe detection hole 1012 of the misalignment plate 101 to detect the orientation of the part to be tested. The rear end of the detection probe 309 has a larger diameter, forming a probe tail end 3091, which is used to cooperate with the orientation fiber optic sensor 308 to detect the relative displacement of the detection probe 309, and thus determine the orientation of the part to be tested. The fiber optic head of the directional fiber optic sensor 308 is inserted into the fiber optic hole of the second fiber optic fixing block 307, which is mounted on top of the probe guide block 306. The fiber optic hole is located above the trajectory of the probe tail end 3091 in a relatively linear motion. When the probe reset spring 310 is in its initial state, a certain gap is maintained between the probe tail end 3091 and the fiber optic hole. When the probe guide block 306 moves forward in a linear motion relative to the detection probe 309, the directional fiber optic sensor 308 will detect the displacement of the probe tail end 3091.

[0082] Furthermore, the probe guide block 306 is connected to the cylinder rod of the third cylinder 302 via a second floating joint 305. The second floating joint 305 prevents the third cylinder 302 from directly connecting to the probe guide block 306 and causing jamming, which would otherwise hinder cylinder operation.

[0083] Furthermore, the detection probe 309 is provided with a positioning pin 3092, and the probe reset spring 310 rests on the positioning pin 3092.

[0084] Next, let's combine... Figure 1-9 The working principle of the orientation recognition device described in this embodiment is explained below. Before the explanation, the structure of the part to be detected is introduced. This type of part is a sleeve-type part with an axially penetrating through hole. One end of the through hole is the large-diameter end, with an inner diameter of 0.8 mm, and the other end is the small-diameter end, with an inner diameter of 0.6 mm. The diameter of the front end of the detection probe 309 is 0.7 mm. Therefore, the front end of the detection probe 309 can be inserted into the large-diameter end of the part, but cannot be inserted into the small-diameter end of the part. Based on this, the orientation recognition of the large and small diameter ends of the part is achieved. If the smaller diameter end of the part under test faces outwards, the front end of the detection probe 309 cannot be inserted. In this case, the detection probe 309 remains stationary, while the probe guide block 306 moves forward (closer to the misalignment plate), allowing the orientation fiber optic sensor 308 to detect the displacement of the probe tail end 3091. If the larger diameter end of the part under test faces outwards, the detection probe 309 can be inserted into the part. Therefore, the detection probe 309 and the probe guide block 306 move synchronously, with no relative displacement between them. The orientation fiber optic sensor 308 cannot detect the displacement of the probe tail end 3091. Thus, based on the detection result of the orientation fiber optic sensor 308, it can be determined whether the larger diameter end or the smaller diameter end of the part under test faces outwards.

[0085] The specific direction recognition process is as follows: First, the second cylinder 202 of the rotating mechanism 200 extends, pushing the misalignment rod 112 forward in the misalignment channel 1014 of the misalignment plate 101. The front end of the misalignment rod 112 pushes open the stop block 104 to expose the inner end of the feed hole 1011 on the misalignment plate 101, so that the material placement hole 1121 on the misalignment rod 112 is aligned with the feed hole 1011. The part to be inspected is fed into the feed hole 1011 by the feeding mechanism and enters the material placement hole 1121. Then, the misalignment rod 112 moves backward under the drive of the second cylinder 202, so that the material placement hole 1121 is aligned with the probe detection hole 1012 of the misalignment plate 101. At the same time, due to the backward movement of the misalignment rod 112, the stop block 104 is reset under the elastic force of the stop block reset spring 114, closing the feed hole 1011 and realizing the interception of the feed. Next, the third cylinder 302 The probe guide block 306 is moved forward, and the first detection result of the direction fiber optic sensor 308 determines whether the part under test is facing outward at its large diameter end or small diameter end. Then, the third cylinder 302 resets the probe guide block 306, and the rotary motor 204 rotates the misalignment rod 112 180° within the misalignment channel 1014, repeating the detection action of the detection probe 309 to detect the other end of the part under test. Finally, based on the two detection results, the rotary motor 204 rotates the misalignment rod 112 90° clockwise or counterclockwise to the discharge direction, aligning the material placement hole 1121 and the discharge hole 1013. The first cylinder 109 moves the ejector pin fixing block 107 upward, and the ejector pin 111 pushes the part in the material placement hole 1121 of the misalignment rod 112 out of the upper end of the discharge hole 1013 and pushes the misalignment plate 101, completing one part orientation identification and discharge. Repeating the above steps allows for orientation identification of each part in the batch to meet installation requirements.

[0086] During the above identification process, when a part enters the material placement hole 1121 at the front end of the feeding rod 112, the feeding fiber optic sensor 113 can detect whether the part is in place in the material placement hole 1121.

[0087] During the identification process, detection probes are used to detect and identify both ends of the part to be tested. This is to avoid judgment errors caused by sensor failure or foreign objects, and at the same time, abnormal materials can be screened and identified to prevent them from flowing to the next process.

[0088] It is understood that the multiple cylinders of the present invention can also be replaced by other linear drive mechanisms such as electric push rods.

[0089] Example 2

[0090] like Figure 10As shown, the difference between this embodiment and Embodiment 1 is that a feeding mechanism 400 is provided on one side of the feed hole 1011 of the misaligned material plate 101. This mechanism provides the parts to be inspected to the feed hole 1011, and the provided parts have a certain orientation, that is, the axial direction of the parts is consistent with the axial direction of the feed hole 1011. Therefore, the feeding mechanism 400 includes a disc-shaped vibrating material plate 401 and a linear vibrator 402. The linear vibrator 402 includes a material channel and a vibrator. One end of the material channel is connected to the outlet of the vibrating material plate 401, and the other end is connected to the feed hole of the misaligned material plate 101. The vibration direction of the vibrator is from the vibrating material plate 401 to the feed hole 1011, so that the parts coming out of the vibrating material plate 401 are transported to the feed hole 1011 in an orderly manner.

[0091] In this embodiment, the feeding mechanism 400 is fixed on the fixed base 500, the base plate 201 is fixed on the fixed base 500 by the column, and the lower end of the feeding plate 106 is fixedly connected to the base plate 201.

[0092] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the protection scope of the pending claims.

Claims

1. A direction recognition device for sleeve-type parts, characterized in that, include: The misalignment mechanism (100) includes a misalignment plate (101), a misalignment rod (112), and a top-loading assembly. The misalignment plate (101) is provided with a misalignment channel (1014), a feed hole (1011), a probe detection hole (1012), and a discharge hole (1013). The probe detection hole (1012) communicates with the misalignment channel (1014), and the discharge hole (1013) extends vertically through the misalignment plate (101) and communicates with the misalignment channel (1014). 1014) Vertically connected, the discharge hole (1013) and the probe detection hole (1012) are located on the same plane; the misalignment rod (112) is movably inserted into the misalignment channel (1014), and the front end of the misalignment rod (112) is provided with a material placement hole (1121) for accommodating the part to be tested, and the material placement hole (1121) is a through hole; the ejector assembly includes an ejector pin (111), one end of which is movably disposed in the discharge hole (1013); The rotating mechanism (200) includes a rotary motor (204) and a second linear drive mechanism. The rotary motor (204) is connected to the material feeding rod (112) to drive the material feeding rod (112) to rotate within the material feeding channel (1014). The second linear drive mechanism is connected to the rotary motor (204) to drive the material feeding rod (112) to move linearly within the material feeding channel (1014) to achieve alignment between the material placement hole (1121) and the feed hole (1011) or the probe detection hole (1012). The probe detection mechanism (300) includes a detection probe (309), a probe guide block (306), a third linear drive mechanism, and a direction fiber optic sensor (308). The third linear drive mechanism drives the probe guide block (306) to slide along the track plate (303). The detection probe (309) is linearly mounted on the probe guide block (306), and a probe reset spring (310) is sleeved on the detection probe (309). The front end of the detection probe (309) can be inserted into the probe detection hole (1012), and the diameter of the front end of the detection probe (309) is larger than the inner diameter of the small diameter end of the part to be tested and smaller than the inner diameter of the large diameter end of the part to be tested. The fiber head position of the direction fiber optic sensor (308) is fixed relative to the probe guide block (306) and is used to detect the relative displacement between the detection probe (309) and the probe guide block (306).

2. The direction recognition device according to claim 1, characterized in that: The feed hole (1011) is located in front of the misaligned material channel (1014) and is connected to the misaligned material channel (1014) through a notch at the front end of the misaligned material plate (101); a stop block (104) is provided at the front end of the misaligned material plate (101), one side of the stop block (104) is movably sleeved on the stop guide pin (105), and the other side of the stop block (104) is inserted into the notch to close the feed hole (1011); the stop guide pin (105) is fixed at the end of the misaligned material plate (101), and a stop block reset spring (114) is sleeved on the stop guide pin (105) to push the stop block (104) to reset.

3. The direction recognition device according to claim 1, characterized in that: The front end of the misaligned plate (101) is also provided with a limiting block (103). The end face of the limiting block (103) opposite to the feed hole (1011) is a limiting surface, which is used to position the part to be tested entering the misaligned rod (112).

4. The orientation recognition device according to claim 3, characterized in that: The material placement hole (1121) at the front end of the material feeding rod (112) is machined with a symmetrical plane, which can fit with the limiting surface on the limiting block (103).

5. The direction recognition device according to claim 1, characterized in that: The front end of the misalignment rod (112) is also provided with an optical fiber detection hole, which is cross-shaped and connected with the material placement hole (1121), and the diameter of the optical fiber detection hole is smaller than that of the part to be tested; the misalignment plate (101) is also provided with a first optical fiber fixing block (102), which is provided with an optical fiber mounting hole. The optical fiber mounting hole is located in front of the misalignment channel (1014) and above the intersection of the axis of the feed hole (1011) and the axis of the misalignment channel (1014). The optical fiber head of the feed optical fiber sensor (113) is set in the optical fiber mounting hole and detects whether the part to be tested has entered the material placement hole (1121) through the optical fiber detection hole.

6. The direction recognition device according to claim 1, characterized in that: The ejector assembly also includes an ejector pin fixing block (107) and a first linear drive mechanism. The lower end of the ejector pin (111) is fixedly connected to the ejector pin fixing block (107), and the ejector pin fixing block (107) is connected to the first linear drive mechanism.

7. The direction recognition device according to claim 6, characterized in that: The first linear drive mechanism is a first cylinder (109), and the cylinder rod of the first cylinder (109) is connected to the ejector pin fixing block (107) through the first floating joint (110).

8. The direction recognition device according to claim 6, characterized in that: The misaligned plate (101) is fixed on the misaligned upright plate (106), and a vertical track is provided on the misaligned upright plate (106). The top pin fixing block (107) is slidably connected to the vertical track.

9. The direction recognition device according to claim 1, characterized in that: The second linear drive mechanism is a second cylinder (202). The cylinder rod of the second cylinder (202) is connected to the fixed plate (203). The rotary motor (204) is installed on the fixed plate (203) through the motor support (205). A bearing seat (206) is also provided on the fixed plate (203). The feed rod (112) is connected to the bearing in the bearing seat (206).

10. The direction recognition device according to claim 9, characterized in that: The feed bar (112) is also provided with a sensing plate (208), and the origin sensor (207) used in conjunction with the sensing plate (208) is set on the bearing seat (206).

11. The direction recognition device according to claim 1, characterized in that: The third linear drive mechanism is a third cylinder (302), and the cylinder rod of the third cylinder (302) is connected to the probe guide block (306) through the second floating joint (305).

12. The direction recognition device according to claim 1, characterized in that: The probe guide block (306) is fixed with a second optical fiber fixing block (307), and the second optical fiber fixing block (307) is provided with an optical fiber hole. The optical fiber head of the direction optical fiber sensor (308) is disposed in the optical fiber hole.

13. The direction recognition device according to claim 1, characterized in that: The detection probe (309) is provided with a positioning structure, and the two ends of the probe reset spring (310) are respectively pressed against the front end face of the probe guide block (306) and the positioning structure.

14. The orientation recognition device according to claim 13, characterized in that: The positioning structure is a positioning pin (3092) or a positioning step set on the detection probe (309).

15. The direction recognition device according to claim 1, characterized in that: It also includes a feeding mechanism (400) for providing the part to be tested to the feed hole (1011) of the misaligned plate (101).

16. The direction recognition device according to claim 15, characterized in that: The feeding mechanism (400) includes a vibrating feed plate (401) and a linear vibrator (402). The linear vibrator (402) includes a vibrator and a feed channel. The feed channel is connected to the vibrator, and one end of the feed channel is connected to the outlet of the vibrating feed plate (401), and the other end is connected to the feed hole (1011). The vibration direction of the vibrator is directed towards the feed hole (1011).

17. A method for identifying the orientation of sleeve-type parts, characterized in that: The method employs the orientation recognition device as described in any one of claims 1-16, and includes the following steps: First, the misalignment rod (112) moves forward until the material placement hole (1121) and the feed hole (1011) are aligned. The part to be tested enters the material placement hole (1121) through the feed hole (1011). The misalignment rod (112) then carries the part to be tested to the material placement hole (1121) and the probe detection hole (1012) are aligned. Then, the third linear drive mechanism drives the probe guide block (306) to move forward, and determines whether the detection probe (309) is in contact with the large diameter end or the small diameter end of the part to be tested based on the first detection result of the direction fiber optic sensor (308). Subsequently, the probe guide block (306) is reset, and the rotary motor (204) drives the misalignment rod (112) to rotate 180°, repeating the detection action of the detection probe (309) to detect the other end of the part to be tested; Finally, based on the two detection results of the direction fiber optic sensor (308), the rotary motor (204) drives the misalignment rod (112) to rotate 90° to the discharge direction of the part to be tested, and the ejector pin (111) of the ejector assembly ejects the part to be tested from the upper end of the discharge hole (1013), thus completing one direction identification of the part to be tested.

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