System and method for detecting forward and reverse material distribution of guide pipe of engine cylinder cover

Abstract

The invention relates to the technical field of engine installation, in particular to a system and method for detecting forward and reverse material distribution of a guide pipe of an engine cylinder cover. The detection system comprises a catheter fixing mechanism, the catheter fixing mechanism is used for fixing a catheter and exposing a gas detection part for detecting the front and back of the catheter, and the gas detection part corresponds to a special-shaped structure at the end part of the catheter when the catheter is placed in a positive material and / or a negative material; the air detection module is used for blowing air and detecting air pressure when the air detection part abuts against the peripheral side wall of the guide pipe; the first telescopic mechanism is used for driving the gas detection module to reciprocate to penetrate through the gas detection part to abut against the peripheral side wall of the catheter. The detection method utilizes the structural difference of the two ends of the conduit to enable the air pressure generated by blowing after the air detection mechanism abuts against the two ends of the conduit to judge the forward and reverse directions of the conduit, is high in detection accuracy and simple to operate and use, and has great popularization value.

Description

Technical Field

[0001] The invention relates to the technical field of engine installation, and in particular to a system and method for detecting forward and reverse material distribution of a conduit of an engine cylinder head. Background Art

[0002] The catheter valve seat press is a necessary process equipment in the processing of automobile engine cylinder heads, and the positive and negative detection mechanism for detecting the catheter is an important part of the equipment. There are structural differences at both ends of the catheter. The outer diameter of one end of the catheter is smaller than the outer diameter of the other end of the catheter. Figure 2 As shown, an annular groove is provided on the outer wall of one end of the catheter; currently, a diffuse reflection laser rangefinder is used to measure the distance of the side wall of the catheter end that has been positioned and fixed, and the front and back of the current catheter are judged by comparing the set distance value, such as Figure 1 and Figure 2 As shown, when the catheter is feeding correctly, the distance measured by the rangefinder is L1. When the catheter is feeding reversely, the laser rangefinder will measure into the catheter groove and measure the distance as L2. At this time, the laser controller will determine that the distance is too large and judge that the catheter is feeding reversely.

[0003] The above detection method has high requirements for the positioning of the catheter. The positioning error will be reflected in the distance measured by the laser. It is not easy to measure the distance accurately. When impurities such as iron powder are easily accumulated in the groove, the measured distance will be inaccurate, and the positive and negative directions of the catheter will be misjudged. Summary of the invention

[0004] The main purpose of the present invention is to solve the problem of misjudging the forward and reverse direction of a pipe material distribution due to inaccurate laser ranging, and to provide a pipe material distribution forward and reverse detection system and method for an engine cylinder head.

[0005] The technical solution adopted by the present invention is: a forward and reverse detection system for the duct material distribution of the engine cylinder head, comprising:

[0006] A catheter fixing mechanism, the catheter fixing mechanism is used to fix the catheter and exposes a gas detection part for detecting the front and back of the catheter, the gas detection part corresponds to the special-shaped structure of the catheter end when the positive material and / or the reverse material of the catheter is placed;

[0007] An air detection module is used to abut against the outer peripheral side wall of the catheter at the air detection position to blow air and detect the air pressure;

[0008] The judgment module is used to compare the detected air pressure with the preset air pressure threshold to judge whether the catheter is forward or reverse.

[0009] Furthermore, the catheter fixing mechanism includes a fixing frame and a sliding block slidably arranged on the fixing frame, the sliding block is provided with a fixing hole for accommodating the catheter, and a gas detection hole communicating with the fixing hole as a gas detection part is provided on the side of the sliding block.

[0010] Furthermore, a positive material transport channel is provided on the fixed frame; the fixed hole can be connected to the positive material transport channel after the sliding block slides in the forward direction; a reverse material transport channel is provided on the fixed frame, and the reverse material transport channel is arranged on the other side of the fixed hole relative to the positive material transport channel, and the fixed hole can be connected to the reverse material transport channel after the sliding block slides in the reverse direction.

[0011] Furthermore, it also includes a material dividing and moving mechanism, which is used to move the conduit to the set positive material station or reverse material station after the air inspection module detects the air pressure; the material dividing and moving mechanism includes a second telescopic mechanism fixedly connected to the sliding block, which is used to drive the sliding block to slide back and forth so that the fixed hole can be separately connected to the positive material transport channel and the reverse material transport channel; the positive material transport channel and the reverse material transport channel correspond to the positive material station and the reverse material station.

[0012] Furthermore, the second telescopic mechanism includes a positive material pushing cylinder and a reverse material pushing cylinder; the positive material pushing rod of the positive material pushing cylinder is fixedly connected to the sliding block, which is used to push the sliding block so that the fixed hole corresponds to the positive material transportation channel; the reverse material pushing rod of the reverse material pushing cylinder is fixedly connected to the positive material pushing cylinder, which is used to drive the positive material pushing cylinder and the sliding block to slide together so that the fixed hole corresponds to the reverse material transportation channel.

[0013] Furthermore, the air inspection module includes an air supply pipe for connecting to the inflation mechanism, a contoured portion arranged at the end of the air supply pipe and an air pressure sensor connected to the air supply pipe; the contoured portion is adapted to fit the outer wall of the non-special-shaped structural section of the catheter, and the contoured portion leaves an air outlet gap with the catheter when abutting against the special-shaped structure of the catheter.

[0014] Furthermore, the gas inspection module also includes a guiding mechanism for guiding the gas pipe to slide and insert into the gas inspection part abutting the catheter; the guiding structure includes a guide plate, and one end of the gas pipe close to the profiling part slides through the guide plate.

[0015] Furthermore, it also includes a first telescopic mechanism, which is used to drive the gas inspection module to reciprocate and pass through the gas inspection part to abut the outer peripheral side wall of the catheter; the first telescopic mechanism includes a trachea push cylinder, an elastic telescopic part and a fixed limit plate, and the two ends of the elastic telescopic part respectively abut the limit plate and the gas pipe, which is used to push the gas pipe through the gas inspection part to abut the catheter, and the trachea push cylinder is used to push the gas pipe to move and separate from the catheter.

[0016] Furthermore, the gas delivery pipe and the connected contoured part and air pressure sensor form a group of gas detection components; the gas detection module includes two groups of gas detection components; and the catheter fixing mechanism is provided with two gas detection parts corresponding to the two ends of the catheter.

[0017] Furthermore, it also includes a catheter detection mechanism, which is arranged corresponding to the detection station and is used to detect whether there is a catheter at the detection station. The detection station refers to the position where the catheter is fixed by the catheter fixing mechanism for detection.

[0018] Furthermore, the catheter detection mechanism includes a metal detector, which is fixed on the catheter fixing mechanism. The metal detector abuts against the catheter when the catheter fixing mechanism fixes the catheter.

[0019] Another aspect of the present invention further provides a method for detecting the forward and reverse direction of a conduit material distribution of an engine cylinder head. The system for detecting the forward and reverse direction of a conduit material distribution of an engine cylinder head provided by the present invention is used. The detection method comprises:

[0020] Secure the catheter and expose the gas inspection site;

[0021] Use the air detection module to blow air through the air detection part against the outer wall of the catheter and detect the air pressure;

[0022] The positive and negative direction of the material distribution in the catheter is determined by comparing the top air pressure and / or bottom air pressure detected at the air detection position with the preset air pressure threshold.

[0023] According to a method for detecting the forward and reverse distribution of a duct of an engine cylinder head provided by the present invention, the method of judging the forward and reverse distribution of the duct by comparing the top air pressure and / or the bottom air pressure detected at the air detection part with a preset air pressure threshold value comprises:

[0024] If the air detection position is set at the top of the catheter, the catheter is judged to be positive when the air pressure at the top is less than or equal to the preset air pressure threshold;

[0025] If the air detection part is set at the bottom end of the catheter, the catheter is judged to be positive when the air pressure at the bottom end is greater than the preset air pressure threshold.

[0026] According to a method for detecting the forward and reverse distribution of a duct in an engine cylinder head provided by the present invention, the top air pressure and / or bottom air pressure detected at the air detection part is compared with a preset air pressure threshold to determine the forward and reverse distribution of the duct, and further includes:

[0027] If the gas detection part is set at the top of the catheter, the catheter is judged to be reversed when the gas pressure is greater than the preset gas pressure threshold;

[0028] If the air detection part is set at the bottom of the catheter, the catheter is judged to be reversed when the air pressure is less than or equal to the preset air pressure threshold;

[0029] If the air detection position is set at the top and bottom of the catheter, the catheter is judged to be positive when the top air pressure is less than or equal to the preset air pressure threshold and the bottom air pressure is greater than the preset air pressure threshold;

[0030] If the air detection position is set at the top and bottom of the catheter, the catheter is judged to be reversed when the air pressure at the top is greater than the preset air pressure threshold and the air pressure at the bottom is less than or equal to the preset air pressure threshold;

[0031] If the air inspection position is set at the top and bottom of the catheter, the catheter quality is judged to be unqualified when the top air pressure and the bottom air pressure are both less than or equal to the preset air pressure threshold.

[0032] According to the present invention, a method for detecting the forward and reverse distribution of a conduit of an engine cylinder head further includes moving the conduit to a corresponding forward material station and a reverse material station according to the forward and reverse distribution of the conduit, including:

[0033] When the conduit is in the material feeding state, the sliding block is moved to connect the fixed hole to the material feeding channel, and the conduit is transported to the set material feeding station;

[0034] When the conduit is in the material-reversing state, the sliding block is moved to connect the fixed hole to the material-reversing transport channel, and the conduit is transported to the set material-reversing station.

[0035] According to a method for detecting forward and reverse material distribution of a conduit of an engine cylinder head provided by the present invention, the moving sliding block makes the fixed hole connected to the positive material transport channel, including using a positive material push cylinder to push the sliding block to slide forward to the fixed hole corresponding to the positive material transport channel;

[0036] The moving sliding block connects the fixed hole to the reverse material transport channel, including using the reverse material push cylinder to push the positive material push cylinder to slide in the direction, and driving the sliding block to slide in the direction of the fixed hole corresponding to the reverse material transport channel.

[0037] The beneficial effects of the present invention include: 1. The catheter can be fixed and the gas detection part can be exposed for detection through the catheter fixing mechanism. Since the outer wall structures at both ends of the catheter are different, the gas detection part is set corresponding to the end of the catheter after being fixed. The gas detection module is used to abut the outer wall of one end of the catheter to blow air to detect the air pressure. When the gas detection module abuts against the special-shaped structure at the end of the catheter, the air leakage is large, and when it abuts against the other end of the catheter, the air leakage is small. By comparing the air pressure with the preset air pressure threshold, the positive and negative of the catheter can be judged; when impurities such as iron ash are accumulated in the groove at the end of the catheter, the air detection module can be blown to remove the iron ash, which has basically no effect on the actual air pressure and does not affect the judgment of the positive and negative of the catheter. The accuracy rate is high, which can solve the problem of misjudging the positive and negative of the catheter due to inaccurate laser ranging;

[0038] 2. The catheter fixing mechanism of the present invention has a simple structure. The sliding block is carried by the fixing frame. The fixing hole of the sliding block is used to accommodate the catheter. The air detection hole facilitates the insertion of the air detection module into the abutting catheter to blow air to detect the air pressure, which is convenient for cooperating with the air detection module to fix the catheter and blow air to detect the air pressure.

[0039] 3. The forward material transport channel and the reverse material transport channel on the fixed frame facilitate the transport of the catheter to the set workstation according to the forward and reverse states of the catheter, and the catheter is divided;

[0040] 4. The material separation and movement mechanism of the present invention is used to separate the tested conduits and move them to the positive material station or the negative material station; the second telescopic mechanism can drive the sliding block to slide back and forth, so as to move the tested conduits into the positive material transport channel and the negative material transport channel respectively, so as to achieve material separation;

[0041] 5. The second telescopic mechanism drives the slider to move back and forth through the positive material push cylinder and the reverse material push cylinder. The positive material push cylinder can push the sliding block to slide forward to move the positive material guide tube into the positive material transport channel. The reverse material push cylinder pushes the positive material push cylinder to slide in the direction to drive the sliding block to slide in the reverse direction to move the reverse material guide tube into the reverse material transport channel.

[0042] 6. The gas detection module of the present invention has a simple structure. The gas pipe can fit the outer wall of the non-special-shaped end of the catheter through the profiling part. When the gas pipe is inflated, the air pressure in the gas pipe is detected by the air pressure sensor. When the profiling part abuts against the special-shaped end of the catheter, there is an air outlet gap, which causes the detected air pressure to be small, making it easy to identify the positive and negative directions of the catheter through the air pressure.

[0043] 7. The guide mechanism can guide the gas pipe to pass through the gas inspection part and abut against the catheter. The use of a guide plate as a guide mechanism has a simple structure, and the gas pipe slides through the guide plate to facilitate the guiding effect;

[0044] 8. The first telescopic mechanism can push the air pipe to move and separate from the conduit through the air pipe push cylinder. The two ends of the elastic telescopic member abut against the limit plate and the air pipe. The elastic telescopic member pushes the air pipe to abut against the conduit, which can avoid the profiling part of the air pipe from rigidly contacting with the conduit and damaging the conduit or workpieces such as the air pipe;

[0045] 9. The catheter fixing mechanism exposes two air detection parts at the upper and lower ends of the catheter. Use two sets of air detection components to abut the outer walls of the two ends of the catheter, blow air to detect the air pressure, and compare the air pressure at both ends of the catheter with the preset air pressure threshold to accurately determine whether the catheter is positive or negative, and whether the quality of the catheter is qualified;

[0046] 10. The method for detecting the forward and reverse direction of the material distribution tube provided by the present invention fully utilizes the structural characteristics of the monitoring system provided by the present invention. According to the structural differences at both ends of the tube, an air detection module is used to blow air on the outer wall of one or both ends of the tube and detect the air pressure. The forward and reverse direction of the tube is determined by comparing the air pressure with the preset air pressure threshold. The method has high accuracy and is easy to operate.

[0047] The catheter material distribution positive and negative detection system of the engine cylinder head of the present invention fixes the catheter to be tested by a catheter fixing mechanism, and reserves an air detection position at the end of the catheter. The air detection mechanism is used to abut the outer wall of the catheter end at the air detection position to inflate and measure the air pressure. The structural difference at the two ends of the catheter is utilized to make the air pressure generated by the air detection mechanism at the two ends of the catheter different. The positive and negative conditions of the catheter are judged according to the different air pressures. The operation and use are simple, the catheter is not affected by impurities such as iron ash, and the judgment accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 : Schematic diagram of the distance measured by laser when the catheter is feeding;

[0049] Figure 2 : Schematic diagram of the distance measured by laser when the catheter is reversed;

[0050] Figure 3 : Schematic diagram of the structure of the forward and reverse detection system of the duct material distribution of the engine cylinder head;

[0051] Figure 4 : Schematic diagram of the exploded structure of the catheter fixing mechanism connected to the gas detection module;

[0052] Figure 5 : Schematic diagram of the cross-sectional structure of the catheter fixing mechanism;

[0053] Figure 6 : Schematic diagram of the position structure of the catheter fixed on the catheter fixing mechanism for inspection;

[0054] Figure 7 : Schematic diagram of the structure of the catheter fixing mechanism and part of the second telescopic mechanism;

[0055] Figure 8 : A schematic diagram of the structure of the second telescopic mechanism connected to the catheter fixing mechanism;

[0056] Fig. 9 : A schematic diagram of a top view of the structure of the second telescopic mechanism connected to the catheter fixing mechanism;

[0057] Fig.10 : Schematic diagram of the exploded structure of the gas detection module detecting the positive material conduit;

[0058] Among them: 1—catheter fixing mechanism; 10—gas detection part; 11—fixing frame; 111—slide rail; 12—sliding block; 121—fixing hole; 122—gas detection hole 13—positive material transportation channel; 14—reverse material transportation channel; 15—entrance; 16—cover plate; 161—gas detection plate hole; 2—gas detection module; 21—gas transmission pipe; 211—push block; 22—profile part; 24—guide mechanism; 3—catheter; 31—special-shaped structure; 4—first telescopic mechanism; 41—trachea push cylinder; 42—elastic telescopic member; 43—limiting plate; 5—second telescopic mechanism; 51—positive material push cylinder; 52—reverse material push cylinder; 53—connecting push plate; 54—sliding bottom plate; 55—fixed base; 6—catheter detection mechanism. DETAILED DESCRIPTION

[0059] The embodiments of the present invention are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0060] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] The catheter material distribution forward and reverse detection system of the engine cylinder head of the present invention can be used to detect the forward and reverse direction of the catheter 3. The catheter 3 to be tested is fixed by a catheter fixing mechanism 1, and an air detection position is reserved at the end of the catheter 3. The air detection mechanism is used to abut the outer wall of the end of the catheter 3 at the air detection position to inflate and measure the air pressure. The structural difference at the two ends of the catheter 3 is utilized to make the gaps generated by the air detection mechanism at the two ends of the catheter 3 different, thereby resulting in different air pressures detected at the two ends of the catheter 3. The forward and reverse situation of the catheter 3 is judged based on the different air pressures. The operation and use are simple, and it is not affected by impurities such as iron ash. The judgment accuracy is high, and it has great promotion value.

[0064] A forward and reverse detection system for a duct material distribution of an engine cylinder head, specifically, Figures 3 to 10As shown, it includes a catheter fixing mechanism 1, an air detection module 2 and a judgment module. The catheter fixing mechanism 1 is used to fix the catheter 3 and exposes an air detection part for detecting the front and back of the catheter 3. The air detection part corresponds to the special-shaped structure 31 at the end of the catheter 3 when the catheter 3 is placed in the positive material and / or the reverse material, that is, the air detection part is set at least corresponding to one end of the catheter 3, including the top or bottom end of the catheter 3, or the top and bottom ends, for providing space for the air detection module 2 to abut against the catheter 3 for detection, and determining the position for detecting the catheter 3; the special-shaped structure 31 includes one or more annular grooves at one end of the catheter 3; the air detection module 2 is used to blow air and detect the air pressure when the air detection part 10 abuts against the outer peripheral side wall of the catheter 3; the judgment module is used to compare the detected air pressure with the preset air pressure threshold P0 to determine the front and back of the catheter 3. Due to the different structures at the two ends of the catheter 3, the gaps generated when the air detection module 2 abuts against the outer circumferential walls of the two ends of the catheter 3 are different, resulting in different air pressures detected by the air detection module 2. The detected air pressure is compared with the preset air pressure threshold P0 to determine the front and back of the catheter 3.

[0065] After the catheter fixing mechanism 1 fixes the catheter 3 to be tested, the gas detection module 2 abuts against the outer peripheral side wall of the end of the catheter 3 at the gas detection position 10, blows air into the catheter 3 and detects the air pressure in the gas detection module 2. Figures 3 to 5 As shown, the air detection parts 10 are respectively arranged at the top and bottom ends of the conduit 3, and the air detection module 2 respectively abuts against the outer walls of the two ends of the conduit 3 at the upper and lower air detection parts 10 to blow air and detect the top air pressure P1 and the bottom air pressure P2, as shown in FIG. Fig.10 As shown, when the catheter 3 is placed in the positive material, the top is a special-shaped structure 31, and the gap when it abuts against the air inspection module 2 is large. The detected top air pressure P1 is small, and the bottom air pressure P2 is large. By comparing the detected top air pressure P1 and bottom air pressure P2 with the preset air pressure threshold P0, it can be judged whether the catheter 3 is divided into positive and negative materials. An air inspection part 10 is set at one end of the catheter 3 (corresponding to the part of the special-shaped structure 31 when the positive or negative material of the catheter 3 is placed, the top or bottom of the catheter 3 is shown in the figure) to detect the front and back of the catheter 3. The air inspection parts 10 are set at both the top and bottom ends of the catheter 3 to improve the accuracy of judging the front and back of the catheter 3, and can also detect whether the quality of the catheter 3 is qualified; when the air inspection module 2 is in good condition, if the top air pressure P1 and the bottom air pressure P2 are both less than the preset air pressure threshold P0, it means that the quality of the catheter 3 is unqualified.

[0066] In one embodiment, if Figures 4 to 7As shown, the catheter fixing mechanism 1 includes a fixing frame 11 and a sliding block 12 slidably arranged on the fixing frame 11, the sliding block 12 is provided with a fixing hole 121 for accommodating the catheter 3, and the side of the sliding block 12 is provided with a gas detection hole 122 connected to the fixing hole 121 as the gas detection part 10; the gas detection hole 122 can be an open structure, so that the gas detection module 2 can be inserted into the catheter 3 abutting against the fixing hole 121. Optionally, the fixed frame 11 is provided with a slide rail 111, and the sliding block 12 is slidably arranged on the slide rail 111; preferably, a slide groove is arranged on the fixed frame 11 as the slide rail 111, and the sliding block 12 is arranged in the slide groove to slide axially along the slide groove, and the fixed frame 11 corresponds to the special-shaped structure 31 at the end of the catheter 3 when the catheter 3 is placed as the positive material and / or the reverse material; the air inspection hole 122 corresponds to the air inspection position 10 when the sliding block 12 fixes the catheter 3 for inspection; the fixed frame 11 is also provided with an entrance 15 connected to the slide groove, and when the sliding block 12 fixes the catheter 3, the fixed hole 121 is arranged corresponding to the entrance 15, which is used to put the catheter 3 into the fixed hole 121 from the entrance 15, and relatively fix the catheter 3 on the sliding block 12 for inspection.

[0067] like Figure 4 As shown, the catheter fixing mechanism 1 is provided with a gas detection part 10 at the special-shaped structure 31 at the end of the catheter 3 when the positive material and the reverse material of the catheter 3 are placed; the fixing frame 11 is provided with an open groove opening to one side of the gas detection module 3, and the open groove is formed to form a slide rail 111. The fixing frame 11 is provided with a cover plate 16 for sealing the open groove, and cooperates with the fixing frame 11 to limit the sliding block 12 in the non-sliding direction, so that the sliding block 12 slides axially along the open groove; the cover plate 16 is pierced with a gas detection plate hole 161, and when the sliding block 12 is fixed to the catheter 3 for inspection, the gas detection plate hole 161 corresponds to the connected gas detection hole 122, and the gas detection part 10 at this time includes the gas detection plate hole 161 and the gas detection hole 122.

[0068] Based on the catheter fixing mechanism 1 comprising a fixing frame 11 and a sliding block 12, as shown in FIG. Figures 4 to 6 As shown, a positive material transport channel 13 is provided on the fixed frame 11; the fixed hole 121 can be connected to the positive material transport channel 13 after the sliding block 12 slides in the forward direction; a reverse material transport channel 14 is provided on the fixed frame 11, and the reverse material transport channel 14 is arranged on the other side of the fixed hole 121 relative to the positive material transport channel 13, and the fixed hole 121 can be connected to the reverse material transport channel 14 after the sliding block 12 slides in the reverse direction. Through the positive material transport channel 13 and the reverse material transport channel 14, it is convenient to transport the conduit 3 to the set workstation according to the positive and reverse states, and divide the conduit 3. The positive material transport channel 13 and the reverse material transport channel 14 are arranged in a connecting slide groove at the bottom of the fixed frame 11. When it is determined that the catheter 3 is positively loaded, the sliding block 12 slides forward (to the left in the figure) to connect the positive material transport channel 13 and move the catheter 3 into the positive material transport channel 13 to perform subsequent processes on the catheter 3; when it is determined that the catheter 3 is reversely loaded, the sliding block 12 slides backward to connect the reverse material transport channel 14 and move the catheter 3 into the positive material transport channel 13, and then the sliding block 12 resets to welcome the next catheter 3 to be tested.

[0069] Based on the fixed frame 11, a forward material transport channel 13 and a reverse material transport channel 14 are provided. Figure 3 As shown, the detection system also includes a material dividing moving mechanism, which is used to move the conduit 3 to the set positive material station or reverse material station after the air detection module 2 detects the air pressure; the material dividing moving mechanism includes a second telescopic mechanism 5 fixedly connected to the sliding block 12, which is used to drive the sliding block 12 to slide back and forth so that the fixed hole 121 can be separately connected to the positive material transport channel 13 and the reverse material transport channel 14; the positive material transport channel 13 and the reverse material transport channel 14 correspond to the positive material station and the reverse material station; through the second telescopic mechanism 5 of the material dividing moving mechanism, the sliding block 12 can be driven to slide back and forth to be separately connected to the positive material transport channel 13 and the reverse material transport channel 14, thereby realizing material dividing of the conduit 3.

[0070] Based on the material distribution movement mechanism including a second telescopic mechanism 5, such as Figures 7 to 9 As shown, the second telescopic mechanism 5 includes a positive material push cylinder 51 and a negative material push cylinder 52; the positive material push rod of the positive material push cylinder 51 is fixedly connected to the sliding block 12, and is used to push the sliding block 12 so that the fixed hole 121 corresponds to the positive material transportation channel 13; the negative material push rod of the negative material push cylinder 52 is fixedly connected to the positive material push cylinder 51, and is used to drive the positive material push cylinder 51 and the sliding block 12 to slide together so that the fixed hole 121 corresponds to the negative material transportation channel 14. In the specific scheme, the negative material push cylinder 52 is fixedly arranged, and the negative material push rod of the negative material push cylinder 52 is fixedly connected to a connecting push plate 53, and the connecting push plate 53 is fixedly connected to a sliding bottom plate 54, and the sliding bottom plate 54 is slidably arranged on a fixed base 55, and the positive material push cylinder 51 is fixedly arranged on the sliding bottom plate 54 in a direction opposite to that of the negative material push cylinder 52. When it is determined that the catheter 3 is feeding positive material, the positive material pushing cylinder 51 pushes the sliding block 12 to slide forward to move the positive material catheter 3 into the positive material transport channel 13, and then moves reversely to reset and fix the next catheter 3 to be tested; when it is determined that the catheter 3 is feeding negative material, the negative material pushing cylinder 52 pushes the positive material pushing cylinder 51 to slide reversely, drives the sliding block 12 to slide reversely to move the negative material catheter 3 into the negative material transport channel 14, and then moves and resets and fixes the next catheter 3 to be tested.

[0071] In certain embodiments, such as Figures 3-4As shown, the gas detection module 2 includes an air pipe 21 for connecting to the inflation mechanism, a profiling portion 22 provided at the end of the air pipe 21, and an air pressure sensor connected to the air pipe 21; the air pressure sensor is used to detect the air pressure in the air pipe 21 when the profiling portion 22 abuts against the catheter 3; the profiling portion 22 is adapted to fit the outer wall of the non-special-shaped end of the catheter 3 (the special-shaped end refers to the special-shaped structure 30 section of the catheter 3), and the profiling portion 22 leaves an air outlet gap with the catheter 3 when abutting against the special-shaped end of the catheter 3. When the catheter 3 to be tested is cylindrical, the profiling portion 22 is an arc-shaped structure that fits the outer side of the circumference of the non-special-shaped end of the catheter 3. The gas detection module 2 has a simple structure. When the air pipe 21 is inflated, the air pressure in the air pipe 21 is detected by the air pressure sensor. When the profiling portion 22 abuts against the special-shaped end of the catheter 3, an air outlet gap is left, resulting in a smaller air pressure to be detected, which is convenient for identifying the positive and negative directions of the catheter 3 by air pressure.

[0072] Based on the fact that the gas detection module 2 includes a gas delivery pipe 21, as Figures 3-4 As shown, the gas inspection module 2 also includes a guide mechanism 24 for guiding the gas pipe 21 to slide into the gas inspection part 10 and abut against the catheter 3; the guide structure includes a guide plate, and one end of the gas pipe 21 close to the contoured part 22 is slidably passed through the guide plate, and the guide plate can be used to guide the gas pipe 21 to move accurately against the outer peripheral side of the detection catheter 3.

[0073] In one embodiment, if Figures 3-4 As shown, the detection system further includes a first telescopic mechanism 4, which is used to drive the gas detection module 2 to reciprocate through the gas detection part 10 to abut against the outer peripheral side wall of the conduit 3. After the conduit fixing mechanism 1 fixes the conduit 3 to be tested, the first telescopic mechanism 4 drives the gas detection module 2 to move from the gas detection part 10 to abut against the outer peripheral side wall of the end of the conduit 3, so that the gas detection module 2 can blow air to detect the air pressure. After determining whether the conduit 3 is split forward or backward, the first telescopic mechanism 4 drives the gas detection module 2 to move and separate from the conduit 3, so as to facilitate the subsequent disposal of the conduit 3.

[0074] On the basis that the detection system includes the first telescopic mechanism 4, as Figures 3-4As shown, the first telescopic mechanism 4 includes an air pipe push cylinder 41, an elastic telescopic member 42 and a limit plate 43. The limit plate 43 is relatively fixedly arranged with one end of the elastic telescopic member 42, and is used to limit the elastic telescopic member 42. The two ends of the elastic telescopic member 42 abut against the limit plate 43 and the air pipe 21, respectively, and are used to push the air pipe 21 through the gas inspection part 10 to abut against the catheter 3. The air pipe push cylinder 41 is used to push the air pipe 21 to move and separate from the catheter 3. The elastic telescopic member 42 can be a spring, and a push block 211 is fixed on the air pipe 21, which is located on one side of the limit plate 43 close to the catheter 3. The spring is sleeved on the air pipe 21, and the two ends abut against the limit plate 43 and the push block 211, respectively. The air pipe push cylinder 41 uses a telescopic cylinder, and the telescopic push rod of the telescopic cylinder is transmission-connected with the air pipe 21. For example, the telescopic push rod is fixedly connected with the air pipe 21, driving the air pipe 21 to move and separate from the conduit 3. When performing air inspection, the telescopic cylinder deflates the air and pushes the air pipe 21 to move through the spring so that the contoured portion 22 abuts against the outer wall of the conduit 3 to achieve air inspection; the elastic telescopic member 42 pushes the air pipe 21 to abut against the conduit 3, thereby avoiding rigid contact between the contoured portion 22 of the air pipe 21 and the conduit 3, thereby avoiding damage to the conduit 3 or workpieces such as the air pipe 21.

[0075] Based on the fact that the gas detection module 2 includes a gas delivery pipe 21, as Figures 3-4 As shown, the gas delivery pipe 21 and the connected profiling part 22 and the air pressure sensor form a set of air detection components; the air detection module 2 includes two sets of air detection components; the catheter fixing mechanism 1 is provided with two air detection parts 10 corresponding to the two ends of the catheter 3. The two sets of air detection components respectively abut the outer wall of the catheter 3 at the two air detection parts 10 to perform air pressure detection, and compare the air pressure at both ends of the catheter 3 with the preset air pressure threshold value P0, so as to accurately determine the front and back of the catheter 3, and at the same time, determine whether the quality of the catheter 3 is qualified. When the air pressure detected by the two sets of air detection components (top air pressure P1 and bottom air pressure P2) are both less than the preset air pressure threshold value P0, it is determined that the quality of the catheter 3 is unqualified, and it can be transported to the shaving material channel through the reverse material transport channel 14 for centralized collection and processing.

[0076] In certain embodiments, such as Figures 3 to 8 As shown, the detection system further includes a catheter detection mechanism 6, which is arranged in correspondence with the detection station and is used to detect whether there is a catheter 3 in the detection station. The detection station refers to the position where the catheter 3 is fixed by the catheter fixing mechanism 1 for detection. In a specific implementation scheme, the catheter 3 is made of metal, and the catheter detection mechanism 6 includes a metal detector, which is fixed on the catheter fixing mechanism 1 and abuts against the catheter 3 when the catheter fixing mechanism 1 fixes the catheter. Figures 4 to 7In the embodiment shown, the metal detector is fixed at the bottom of the catheter fixing mechanism 1, and the metal detector is embedded at the bottom of the fixing frame 11, and its top surface is located at the bottom surface of the slide rail 111. When the catheter 3 is placed in the catheter fixing mechanism 1, the metal detector contacts the metal catheter 3, and the gas detection module 2 abuts against the catheter 3 for gas detection, which is convenient for realizing automatic detection. A controller can be added to control the catheter detection mechanism 6, the gas detection module 2, the first telescopic mechanism 4, the second telescopic mechanism 5 and the judgment module to realize automatic detection.

[0077] The sliding block 12 moves on the fixed frame 11 and has three position states, including the initial position, the positive material distribution position and the reverse material distribution position; when the sliding block 12 is in the positive material distribution position, it is a detection station, which is the position where the catheter 3 is fixed by the catheter fixing mechanism 1 for detection, that is, it is a state of receiving and fixing the catheter 3 to be tested. In this state, the fixed hole 121 corresponds to the entrance 15 of the fixed frame 11; when the sliding block 12 is in the positive material distribution position, the fixed hole 121 corresponds to the positive material transport channel 13; when the sliding block 12 is in the reverse material distribution position, the fixed hole 121 corresponds to the reverse material transport channel 14.

[0078] In actual use, the gas detection module 2 includes two groups of gas detection components, the sliding block 12 is in the initial position, that is, the fixing hole 121 corresponds to the inlet 15 of the connecting fixing frame 11, and after the catheter detection mechanism 6 detects that the catheter 3 is placed in the fixing hole 121, the spring pushes the gas delivery pipe 21 of the gas detection module 2 to move so that the contoured part 22 abuts against the outer walls of both ends of the detected catheter 3, the controller adjusts the inflation mechanism to blow air and collects the air pressure (top air pressure P1 and bottom air pressure P2) in the two air delivery pipes 21 through the air pressure sensor, and the judgment module compares the top air pressure P1 and the bottom air pressure P2 with the preset air pressure threshold P0, thereby Determine the forward and reverse states of the conduit 3; when it is determined that the conduit 3 is feeding positive material, the positive material pushing cylinder 51 pushes the sliding block 12 to slide forward to the fixed hole 121 to connect to the positive material transport channel 13 (i.e., the positive material dividing position), and the conduit 3 is transported to the positive material station through the positive material transport channel 13 for subsequent processes, and then moved and reset to the initial position; when it is determined that the conduit 3 is feeding negative material, the negative material pushing cylinder 52 pushes the positive material pushing cylinder 51 to slide reversely to drive the sliding block 12 to slide reversely to the fixed hole 121 to connect to the negative material transport channel 14 (i.e., the negative material dividing position), and the conduit 3 is transported to the shaving material channel through the negative material transport channel 14, and then moved and reset to the initial position.

[0079] Another aspect of the present invention further provides a method for detecting the forward and reverse direction of a conduit material distribution of an engine cylinder head. The method uses the forward and reverse direction detection system for conduit material distribution of an engine cylinder head provided by the present invention. The detection method includes:

[0080] S1, fix the catheter 3 and expose the gas detection part 10;

[0081] S2, using the air detection module 2 to blow air through the air detection part 10 against the outer wall of the catheter 3 and detect the air pressure;

[0082] S3. Determine whether the catheter 3 is distributing the material forward or backward by comparing the top air pressure P1 and / or the bottom air pressure P2 detected at the air detection part 10 with a preset air pressure threshold value P0.

[0083] According to a method for detecting the forward and reverse distribution of a conduit of an engine cylinder head provided by the present invention, in step S3, the forward and reverse distribution of the conduit 3 is determined by comparing the top air pressure P1 and / or the bottom air pressure P2 detected at the air detection part 10 with a preset air pressure threshold value P0, including:

[0084] S31, if the gas detection part 10 is set at the top of the catheter 3, when the top air pressure P1 is less than or equal to the preset air pressure threshold P0, it is determined that the catheter 3 is filled;

[0085] S32. If the gas detection part 10 is set at the bottom end of the conduit 3, when the bottom end gas pressure P2 is greater than the preset gas pressure threshold value P0, it is determined that the conduit 3 is filled with material.

[0086] According to a method for detecting the forward and reverse distribution of a conduit of an engine cylinder head provided by the present invention, in step S3, judging the forward and reverse distribution of the conduit 3 by comparing the top air pressure P1 and / or the bottom air pressure P2 detected at the air detection part 10 with the preset air pressure threshold P0 also includes:

[0087] S33, if the gas detection part 10 is set at the top of the catheter 3, when the top air pressure P1 is greater than the preset air pressure threshold P0, it is determined that the catheter 3 is reversed;

[0088] S34, if the gas detection part 10 is set at the bottom end of the conduit 3, when the bottom end gas pressure P2 is less than or equal to the preset gas pressure threshold value P0, it is determined that the conduit 3 is reversed;

[0089] S35, if the air detection part 10 is set at the top and bottom of the catheter 3, when the top air pressure P1 is less than or equal to the preset air pressure threshold P0, and the bottom air pressure P2 is greater than the preset air pressure threshold P0, it is determined that the catheter 3 is positive;

[0090] S36, if the air detection part 10 is set at the top and bottom of the catheter 3, when the top air pressure P1 is greater than the preset air pressure threshold P0, and the bottom air pressure P2 is less than or equal to the preset air pressure threshold P0, it is determined that the catheter 3 is reversed;

[0091] S37. If the air inspection part 10 is set at the top and bottom of the catheter 3, when the top air pressure P1 and the bottom air pressure P2 are both less than or equal to the preset air pressure threshold P0, it is judged that the quality of the catheter 3 is unqualified.

[0092] According to the present invention, a method for detecting the forward and reverse directions of a duct material distribution of an engine cylinder head further includes:

[0093] S4, moving the conduit 3 to the corresponding forward material station and reverse material station according to the forward and reverse material distribution of the conduit 3, including:

[0094] S41, when the conduit 3 is in the material loading state, the sliding block 12 is moved to connect the fixed hole 121 to the material loading channel 13, and the conduit 3 is transported to the set material loading station; including using the material loading push cylinder 51 to push the sliding block 12 to slide forward to the fixed hole 121 corresponding to the material loading channel 13

[0095] S42. When the conduit 3 is in the reverse material state, the sliding block 12 is moved to make the fixed hole 121 connected to the reverse material transport channel 14, and the conduit 3 is transported to the set reverse material station; including using the reverse material push cylinder 52 to push the positive material push cylinder 51 to slide in the direction, and drive the sliding block 12 to slide in the direction to the fixed hole 121 corresponding to the reverse material transport channel 14.

[0096] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A duct material distribution positive and negative detection system for an engine cylinder head, characterized in that: include, A catheter fixing mechanism (1), the catheter fixing mechanism (1) being used to fix the catheter (3) and exposing a gas detection portion (10) for detecting the front and back of the catheter (3), the gas detection portion (10) corresponding to a special-shaped structure (31) at the end of the catheter (3) when the catheter (3) is placed in the front and / or back positions; An air detection module (2) is used to blow air and detect air pressure at the air detection portion (10) abutting against the outer peripheral side wall of the catheter (3); The judgment module is used to compare the detected air pressure with a preset air pressure threshold value so as to judge whether the catheter (3) is forward or reverse.

2. A duct material distribution positive and negative detection system for an engine cylinder head as claimed in claim 1, characterized in that: The catheter fixing mechanism (1) comprises a fixing frame (11) and a sliding block (12) slidably arranged on the fixing frame (11); the sliding block (12) is provided with a fixing hole (121) for accommodating the catheter (3); and a gas detection hole (122) communicating with the fixing hole (121) is provided on a side surface of the sliding block (12).

3. A duct material distribution positive and negative detection system for an engine cylinder head as claimed in claim 2, characterized in that: The fixing frame (11) is provided with a positive material transport channel (13); the fixing hole (121) can be connected to the positive material transport channel (13) after the sliding block (12) slides in the positive direction; the fixing frame (11) is provided with a reverse material transport channel (14), the reverse material transport channel (14) is arranged on the other side of the fixing hole (121) relative to the positive material transport channel (13), and the fixing hole (121) can be connected to the reverse material transport channel (14) after the sliding block (12) slides in the reverse direction.

4. A duct material distribution positive and negative detection system for an engine cylinder head as claimed in claim 3, characterized in that: It also includes a material distribution movement mechanism, which is used to move the conduit (3) to a set positive material station or a negative material station after the air detection module (2) detects the air pressure; the material distribution movement mechanism includes a second telescopic mechanism (5) fixedly connected to the sliding block (12), which is used to drive the sliding block (12) to slide back and forth so that the fixed hole (121) can be separately connected to the positive material transport channel (13) and the negative material transport channel (14); the positive material transport channel (13) and the negative material transport channel (14) correspond to the positive material station and the negative material station.

5. A duct material distribution positive and negative detection system for an engine cylinder head as claimed in claim 4, characterized in that: The second telescopic mechanism (5) comprises a positive material pushing cylinder (51) and a negative material pushing cylinder (52); the positive material pushing rod of the positive material pushing cylinder (51) is fixedly connected to the sliding block (12) and is used for pushing the sliding block (12) so that the fixed hole (121) corresponds to the positive material transport channel (13); the negative material pushing rod of the negative material pushing cylinder (52) is fixedly connected to the positive material pushing cylinder (51) and is used for driving the positive material pushing cylinder (51) and the sliding block (12) to slide together so that the fixed hole (121) corresponds to the negative material transport channel (14).

6. A duct material distribution positive and negative detection system for an engine cylinder head according to any one of claims 1 to 5, characterized in that: The gas detection module (2) comprises an air supply pipe (21) for connecting to an inflation mechanism, a contoured portion (22) provided at the end of the air supply pipe (21), and an air pressure sensor connected to the air supply pipe (21); the contoured portion (22) is adapted to fit the outer wall of a section of a non-special-shaped structure (30) of a catheter (3), and when the contoured portion (22) abuts against the special-shaped structure (30) of the catheter (3), an air outlet gap is left between the contoured portion (22) and the catheter (3).

7. A duct material distribution positive and negative detection system for an engine cylinder head as claimed in claim 6, characterized in that: The gas detection module (2) further comprises a guide mechanism (24) for guiding the gas delivery pipe (21) to slide and insert into the gas detection part (10) to abut against the catheter (3); the guide structure comprises a guide plate, and one end of the gas delivery pipe (21) close to the contoured part (22) slides through the guide plate.

8. The engine cylinder head conduit material distribution positive and negative detection system as claimed in claim 6, characterized in that: It also includes a first telescopic mechanism (4) for driving the gas detection module (2) to reciprocate through the gas detection portion (10) and abut against the outer peripheral side wall of the catheter (3); the first telescopic mechanism (4) includes an air pipe push cylinder (41), an elastic telescopic member (42) and a fixedly arranged limit plate (43); the two ends of the elastic telescopic member (42) respectively abut against the limit plate (43) and the air pipe (21) and are used to push the air pipe (21) through the gas detection portion (10) and abut against the catheter (3); the air pipe push cylinder (41) is used to push the air pipe (21) to move and separate from the catheter (3).

9. The engine cylinder head conduit material distribution positive and negative detection system as claimed in claim 6, characterized in that: The gas delivery pipe (21) and the connected profiling part (22) and the air pressure sensor form a group of gas detection components; the gas detection module (2) includes two groups of gas detection components; the catheter fixing mechanism (1) is provided with two gas detection parts (10) at both ends of the corresponding catheter (3).

10. A method for detecting the forward and reverse direction of a duct material distribution of an engine cylinder head, characterized in that: A forward and reverse detection system for duct material distribution of an engine cylinder head as claimed in any one of claims 1 to 9 is used, wherein the detection method comprises: Fix the catheter (3) and expose the gas detection site (10); Using the air detection module (2) to pass through the air detection part (10) and abut against the outer wall of the catheter (3) to blow air and detect the air pressure; The forward or reverse distribution of the material by the conduit (3) is determined by comparing the top end air pressure and / or the bottom end air pressure detected at the air detection portion (10) with a preset air pressure threshold.

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