Linear size detection equipment for automobile pipe fitting

Abstract

The invention relates to the technical field of workpiece linear dimension measurement, in particular to linear dimension detection equipment for automobile pipe fittings. Comprising a detection frame and two detection seats symmetrically arranged on the detection frame. The faces, close to each other, of the two detection bases are rotationally connected with a driving roller and a driven roller. The outer walls of the driving roller and the driven roller are in transmission connection with a conveyor belt; the driving roller is driven by an independent motor; detection holes are evenly formed in the faces, close to each other, of the two conveying belts. A detection rod is movably connected in the detection hole; rail grooves which correspond to the conveying belt and are the same in shape are formed in the faces, close to each other, of the two detection bases. Compared with the prior art, due to the fact that in the continuous and prolonged detection process of the pipe type accessories on the detection equipment, new pipe type accessories can be loaded, the detection time of the pipe type accessories is greatly saved, continuous length detection of the pipe type accessories is achieved, the continuous detection time is long, and compared with an existing detection mode, the detection precision and efficiency are both improved.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece linear dimension measurement, in particular to a linear dimension detection device for automobile pipe fittings. Background Art

[0002] In the manufacturing process of automotive parts, linear dimension measurements are required for tubular accessories before and after processing. Linear dimension measurements include length measurement, diameter measurement, and thickness measurement. The length of tubular accessories is one of the important dimensions of tubular accessories, and is generally measured using measuring tools such as vernier calipers and tape measures. In order to avoid the displacement of tubular accessories during the measurement process, the tubular accessories are generally placed on a clamping fixture for auxiliary measurement. After the clamping fixture clamps the tubular accessories, the inspectors will measure the size of the tubular accessories. Manual measurement is inefficient and has large errors. Therefore, with the iteration of technology, some equipment that automatically detects the length of workpieces has been derived. The specific operation is that the inspectors first clamp the tubular accessories to the detection equipment, and the detection components in the detection equipment will work to detect the length of the tubular accessories. During the detection process, other tubular accessories are in a waiting state until the tubular accessories that have completed the length detection are removed from the detection equipment before new tubular accessories can be detected. For batch detection, this undoubtedly affects the detection efficiency. In addition, in order to further improve the detection accuracy, the detection equipment generally prolongs the length detection time of a single tubular accessory, which further reduces the length detection efficiency of the tubular accessories. Summary of the invention

[0003] In order to make up for the shortcomings of the prior art, the present invention proposes a linear dimension detection device for automobile tubular accessories. Since the tubular accessories on the detection device are continuously and prolong the detection process, new tubular accessories can be loaded, thereby greatly saving the detection time of the tubular accessories, realizing continuous length detection of the tubular accessories, and the detection time is relatively long. Compared with the existing detection methods, the detection accuracy and efficiency are improved.

[0004] The technical solution adopted by the present invention to solve its technical problem is: the linear dimension detection equipment for automobile pipe-type accessories described in the present invention comprises a detection frame and two detection seats symmetrically arranged on the detection frame; the two detection seats are close to each other and are rotatably connected to the active roller and the driven roller; the outer walls of the active roller and the driven roller are transmission-connected to the conveyor belt; the active roller is driven by an independent motor; the two conveyor belts are close to each other and are evenly provided with detection holes; the detection holes are movably connected with the detection rod; the two detection seats are close to each other and are provided with track grooves corresponding to the conveyor belts and having the same shape; the depth of the track groove at the front end is less than the depth at the rear end; one end of the detection rod extends into the track groove; the outer wall of the detection rod is provided with a detection groove along the axial direction; the detection groove passes through the other end of the detection rod; the pressure sensor is fixedly connected to the detection rod inside the detection groove near one end; the detection block is slidably connected to the detection block near the other end of the detection rod; the detection block is connected to the corresponding pressure sensor through a spring; the outer wall of the other end of the detection rod is sleeved with a detection disk; the inner wall of the detection disk is fixedly connected to the detection block.

[0005] Preferably, sliding bars are provided at the left and right ends of the detection frame; the length direction of the sliding bars is consistent with the front-to-back direction; two partitions are connected to the sliding bars of the detection frame for forward and backward sliding; first bolts that can contact the sliding bars are provided on the two partitions; and the two partitions are located directly below the two detection seats.

[0006] Preferably, a slide bar is provided on the upper surface of the front and rear ends of the detection frame; the length direction of the slide bar is consistent with the left and right direction; the detection seat is slidably connected to the slide bar through a slide groove; the slide groove penetrates forward and is threadedly connected to the second bolt.

[0007] Preferably, a slot plate is provided inside the track slot and near the slot bottom; the slot plate has the same shape as the track slot; the width of the slot plate is smaller than the width of the track slot; the middle section of the slot plate is hinged to the middle section of the track slot; the bottom of the track slot is penetrated along the left-right direction and is threadedly connected with a third bolt; the third bolt abuts against the front and rear positions of the back side of the slot plate.

[0008] Preferably, magnets are provided on one side of the two slot plates close to each other; and the end of the detection rod close to the slot plate is made of magnetic material and can be attracted by the slot plate.

[0009] Preferably, the groove wall of the track groove is provided with teeth; the end of the detection rod close to the bottom of the track groove is fixedly connected to a gear; the gear is meshed with the teeth for transmission; and the surface of the detection disk in contact with the workpiece is set as a polished surface.

[0010] Preferably, the teeth in one of the track grooves are arranged on the track groove near the outer groove wall, and the teeth in the other track groove are arranged on the track groove near the inner groove wall; the two opposite detection rods rotate in opposite directions.

[0011] Preferably, a limit plate is provided at the upper position between the two detection seats; guide plates are provided at the ends of the limit plate; the limit plate is fixedly connected to the detection seat through an L-shaped block; the detection disk on the outer wall of the detection rod can enter the inner side of the limit plate under the guidance of the guide plate; the limit plate is arranged close to the corresponding conveyor belt.

[0012] Preferably, a cleaning brush is provided on one side of the two limit plates away from each other.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. In the present invention, since the tubular accessories on the detection device are continuously and prolong the detection process, new tubular accessories can be loaded, thereby greatly saving the detection time of the tubular accessories, realizing continuous length detection of the tubular accessories, and the detection time is relatively long. Compared with the existing detection methods, the detection accuracy and efficiency are improved.

[0015] 2. The present invention arranges two partitions below the detection seat so that the tubular accessories can fall into different positions below according to their own lengths after detection, thereby realizing the sorting of the tubular accessories, reducing the subsequent selection process, and further improving the production efficiency of the tubular accessories.

[0016] 3. The detection rod of the present invention will also move with the transmission of the conveyor belt. The other end of the detection rod will be inserted into the tubular accessory to limit the tubular accessory. The other end of the detection rod will drive the detection disk to rotate. During the rotation of the detection disk, the grinding surface will be driven to grind the end of the tubular accessory, so that some burrs on the end of the tubular accessory are smoothed out by grinding, thereby avoiding the presence of burrs affecting the accuracy of length detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0018] Figure 1 is a stereogram of the present invention;

[0019] Figure 2 It is a three-dimensional diagram of the detection seat and the conveyor belt of the present invention;

[0020] Figure 3 It is a three-dimensional diagram of the conveyor belt and the trough plate in the present invention;

[0021] Figure 4 is a three-dimensional diagram of the detection rod and the detection plate of the present invention;

[0022] Figure 5 is a three-dimensional diagram of one of the detection seats of the present invention;

[0023] Figure 6 yes Figure 5The enlarged view of point A in the middle;

[0024] Figure 7 is a cross-sectional view of one of the detection seats in the present invention;

[0025] Figure 8 yes Figure 7 The enlarged view of point B in the middle;

[0026] Fig. 9 is a three-dimensional diagram of another detection seat in the present invention;

[0027] Fig.10 It is a position diagram of the micro electric telescopic mechanism of the present invention.

[0028] In the figure: detection frame 1, slide bar 11, partition 12, first bolt 13, slide bar 14, detection seat 2, track groove 21, slide groove 22, second bolt 23, teeth 24, conveyor belt 3, active roller 31, driven roller 32, motor 33, detection hole 34, detection rod 4, detection groove 41, pressure sensor 42, detection block 43, spring 44, detection disk 45, polished surface 451, gear 46, groove plate 5, third bolt 51, magnet 52, limit plate 6, guide plate 61, L-shaped block 62, cleaning brush 63, micro electric telescopic mechanism 7. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figures 1 to 10 As shown, the present invention includes the following embodiments:

[0031] Embodiment 1: A linear dimension detection device for automobile pipe fittings, comprising a detection frame 1 and two detection seats 2 symmetrically arranged on the detection frame 1; the two detection seats 2 are close to each other and are rotatably connected to a driving roller 31 and a driven roller 32; the outer walls of the driving roller 31 and the driven roller 32 are connected to a conveyor belt 3 by transmission; the driving roller 31 is driven by an independent motor 33; the two conveyor belts 3 are close to each other and are evenly provided with detection holes 34; the detection holes 34 are movably connected to the detection rods 4; the two detection seats 2 are close to each other and are provided with track grooves 21 corresponding to the conveyor belt 3 and having the same shape; The depth of the front end of the track groove 21 is smaller than the depth of the rear end; one end of the detection rod 4 extends into the track groove 21; a detection groove 41 is axially arranged on the outer wall of the detection rod 4; the detection groove 41 passes through the other end of the detection rod 4; a pressure sensor 42 is fixedly connected to the inside of the detection groove 41 near one end of the detection rod 4; a detection block 43 is slidably connected to the inside of the detection groove 41 near the other end of the detection rod 4; the detection block 43 is connected to the corresponding pressure sensor 42 through a spring 44; a detection disk 45 is sleeved on the outer wall of the other end of the detection rod 4; the inner wall of the detection disk 45 is fixedly connected to the detection block 43.

[0032] When it is necessary to detect the length of the automobile tube fittings, the tube fittings are placed on the rear side of the detection equipment, and then two independent motors 33 are started to work. The two independent motors 33 work synchronously, and the output shafts of the independent motors 33 are fixedly connected to the ends of the corresponding active rollers 31, so that the active rollers 31 are driven by the corresponding independent motors 33 to rotate. During the rotation of the active rollers 31, the conveyor belt 3 is driven to drive. The transmission direction of the upper part of the conveyor belt 3 is from back to front, and the transmission direction of the lower part of the conveyor belt 3 is from front to back. During the transmission of the conveyor belt 3, the detection hole 34 on the conveyor belt 3 is driven with the transmission of the conveyor belt 3, and the detection rod 4 is movably connected in the detection hole 34, so the detection rod 4 will move with the movement of the detection hole 34, and the detection rod 4 One end will move along the track groove 21. For the convenience of description, the detection rod 4 located in the upper half of the track groove 21 is called the upper detection rod 4, and the detection rod 4 located in the lower half of the track groove 21 is called the lower detection rod 4. During the movement of one end of the upper detection rod 4 along the upper half of the track groove 21, since the groove depth of the track groove 21 decreases from back to front, one end of the upper detection rod 4 will be squeezed from the bottom of the track groove 21, so that the length of the other end of the upper detection rod 4 extending out of the track groove 21 becomes longer and longer. During the movement of the upper detection rod 4 along the track groove 21, it will also move along the corresponding detection hole 34. The upper detection rods 4 on the two conveyor belts 3 correspond to each other one by one. The upper detection rods 4 on the two track grooves 21 will approach each other while moving forward, and in this process , the control tube fitting is kept between the two upper detection rods 4 and moves forward with the upper detection rods 4. The upper detection rods 4 on the two track grooves 21 will approach each other and be inserted into the inner side of the tube fitting during the forward movement. The other end of the detection rod 4 will drive the detection disk 45 to approach the tube fitting synchronously during the insertion of the other end of the detection rod 4 into the tube fitting. The two relative detection disks 45 will abut against the end of the tube fitting. As the other end of the detection rod 4 continues to be inserted, the pressure sensor 42 will approach the corresponding detection disk 45, so that the distance between the detection disk 45 and the corresponding pressure sensor 42 becomes smaller, and the spring 44 is further compressed. The spring 44 will transmit the elastic force to the pressure sensor 42. The detection disk 4 is obtained according to the coefficient of the spring 44 and the value of the pressure sensor 42. 5 to the pressure sensor 42, the distance between the pressure sensors 42 on the two relative detection rods 4 can be sensed by components such as distance sensors, so as to obtain the distance between the two relative detection blocks 43, that is, the distance between the two relative detection disks 45. The two relative detection disks 45 are against the ends of the tubular accessories, so the distance between the two detection disks 45 is the length of the tubular accessories. In addition, distance sensors can be directly arranged on the two detection disks 45 to directly measure the length of the tubular accessories. The corresponding detection method is selected according to the specific use requirements. The upper detection rod 4 moves along the front end of the track groove 21 to become the lower detection rod 4. The two relative lower detection rods 4 will move backward and away from each other, and the two relative detection disks 45 will continue to be pressed against the ends of the tubular accessories.To realize continuous detection of the length of the tubular fittings, as the two lower detection rods 4 move away from each other, the other end of the lower detection rod 4 will be pulled out from the inside of the tubular fittings, and the gravity of the tubular fittings is greater than the clamping force of the two detection plates 45 on the tubular fittings, so that the tubular fittings are directly dropped and unloaded, and the new tubular fittings are controlled to be placed between the two upper detection rods 4 and move forward with the forward movement of the detection rods 4, so as to realize the size detection of the new tubular fittings, so as to realize the detection of the tubular fittings continuously; the outer wall of the active roller 31 and the inner wall of the conveyor belt 3 in this embodiment are both provided with meshing teeth (not shown in the figure) to ensure stable transmission and avoid slipping; the conveyor belt 3 in this embodiment can be made of metal material to improve the strength of the conveyor belt 3;,

[0033] The present invention can load new tubular accessories during the continuous and prolonged detection process of the tubular accessories on the detection device, thereby greatly saving the detection time of the tubular accessories, realizing continuous length detection of the tubular accessories, and the detection time is relatively long. Compared with the existing detection methods, the detection accuracy and efficiency are improved.

[0034] Embodiment 2: Slide bars 11 are provided at the left and right ends of the detection frame 1; the length direction of the slide bar 11 is consistent with the front-to-back direction; the slide bar 11 of the detection frame 1 is connected to two partitions 12 by sliding forward and backward; the two partitions 12 are provided with first bolts 13 that can contact the slide bar 11; the two partitions 12 are located directly below the two detection seats 2.

[0035] In this embodiment, a slide bar 14 is provided on the upper surface of the front and rear ends of the detection frame 1; the length direction of the slide bar 14 is consistent with the left and right direction; the detection seat 2 is slidably connected to the slide bar 14 through a slide groove 22; the slide groove 22 penetrates forward and is threadedly connected to the second bolt 23.

[0036] In this embodiment, a slot plate 5 is provided inside the track slot 21 and near the bottom of the slot; the slot plate 5 has the same shape as the track slot 21; the width of the slot plate 5 is smaller than the width of the track slot 21; the middle section of the slot plate 5 is hinged to the middle section of the track slot 21; the bottom of the track slot 21 is penetrated along the left-right direction and is threadedly connected with a third bolt 51; the third bolt 51 abuts against the front and rear positions of the back side of the slot plate 5.

[0037] In this embodiment, magnets 52 are provided on the surfaces of the two slot plates 5 close to each other; the end of the detection rod 4 close to the slot plate 5 is made of magnetic material and can be attracted by the slot plate 5 .

[0038] Before using the detection equipment to detect the tubular accessories, first loosen the first bolt 13 so that the two partitions 12 are unlocked on the slide bar 11 of the detection frame 1, and then push the partition 12 to slide along the slide bar 11 to change the front and rear positions of the partition 12 under the detection seat 2. The space between the two partitions 12 is the qualified area, and the other positions are the unqualified areas. The partition 12 at the front position indicates the lower tolerance position of the length of the tubular accessories, and the partition 12 at the rear position indicates the upper tolerance position of the length of the tubular accessories, allowing the size of the tubular accessories to be within a certain error range. After the partition 12 completes the position adjustment, tighten the first bolt 13 to lock the partition 12. During the backward movement of the two relative lower detection rods 4, the distance between the two corresponding lower detection rods 4 will increase, and the other end of the lower detection rod 4 will gradually be pulled out from the inside of the tubular accessory, and the end of the tubular accessory will be in the detection Under the push of the disk 45, the tubular fitting is always in the middle position between the two detection seats 2, so that the other ends of the two relatively lower detection rods 4 are equidistantly drawn out from the inner side of the tubular fitting. When the size of the tubular fitting is too small, the tubular fitting directly falls off from the lower detection rod 4 and falls to the unqualified area below. When the size of the tubular fitting is just right, that is, within the tolerance range, the tubular fitting will fall off from the lower detection rod 4 and fall to the qualified area below. When the size of the tubular fitting is too large, the tubular fitting will fall off from the lower detection rod 4 and fall to the unqualified area below. The tubular fittings in the unqualified area and the qualified area are separated by the partition 12, so that the tubular fittings after the inspection can fall under the limitation of their own length and be separated by the partition 12, so as to realize the sorting of the tubular fittings, reduce the subsequent selection process, and further improve the processing efficiency of the tubular fittings.

[0039] In addition, in this embodiment, the slide groove 22 and the slide bar 14 on the detection seat 2 can be unlocked by loosening the second bolt 23, so that the detection seat 2 can slide left and right, and the distance between the two detection seats 2 can be adjusted. The detection rod 4 on the detection seat 2 will move with the movement of the detection seat 2, so that the detection device can detect pipe fittings of different lengths, thereby improving the detection range of the detection device. After the position adjustment of the detection seat 2 is completed, the second bolt 23 is tightened. After the second bolt 23 is tightened, the detection seat 2 is locked on the detection frame 1;

[0040] In this embodiment, the length of the third bolt 51 at the front position on the detection seat 2 inserted into the track groove 21 is greater than the length of the third bolt 51 at the rear position inserted into the track groove 21. The depth of the track groove 21 will be limited by the inclination angle of the groove plate 5. In the case of needing to improve the sorting accuracy of the pipe-type accessories, it is necessary to screw the third bolt 51 so that the length of the third bolt 51 at the front position inserted into the track groove 21 is reduced, and the length of the third bolt 51 at the rear position inserted into the track groove 21 is increased. In this way, the inclination angle of the groove plate 5 in the track groove 21 is reduced, so that the groove depth difference between the front end and the rear end of the track groove 21 is reduced, so that the pipe-type accessories with a small difference in length can be detected and sorted;

[0041] In order to further improve the stability of the movement of the detection rod 4, in this embodiment, the end of the detection rod 4 close to the slot plate 5 is made of magnetic material, such as iron. The end of the detection rod 4 close to the slot plate 5 is attracted by the magnetism of the slot plate 5, so that the end of the detection rod 4 close to the slot plate 5 moves in contact with the slot plate 5, thereby preventing the detection rod 4 from falling off from the detection hole 34 and improving the detection stability.

[0042] Embodiment 3: The groove wall of the track groove 21 is provided with teeth 24; the end of the detection rod 4 close to the bottom of the track groove 21 is fixedly connected to the gear 46; the gear 46 is meshed with the teeth 24 for transmission; the surface of the detection disk 45 in contact with the workpiece is set as a polished surface 451.

[0043] In this embodiment, the teeth 24 in one of the track grooves 21 are arranged on the outer groove wall of the track groove 21, and the teeth 24 in the other track groove 21 are arranged on the inner groove wall of the track groove 21; the two opposite detection rods 4 rotate in opposite directions.

[0044] In the process of the conveyor belt 3 driving the detection rod 4 along the track groove 21, one end of the detection rod 4 inserted into the track groove 21 is fixedly connected to the gear 46, and the gear 46 meshes with the teeth 24 in the track groove 21, so that the gear 46 will rotate, and one end of the detection rod 4 will also be affected by the depth of the track groove 21 to drive the detection rod 4 to move along the detection hole 34, so that the detection rod 4 in the detection hole 34 moves along the axial direction of the detection hole 34 while rotating, and the detection rod 4 will also move with the transmission of the conveyor belt 3, and the other end of the detection rod 4 is inserted into the tubular accessory to limit the position of the tubular accessory, and the other end of the detection rod 4 will drive the detection disk 45 to rotate, and the detection disk 45 will drive the grinding surface 451 to grind the end of the tubular accessory during the rotation process, so that the end of the tubular accessory Some burrs are smoothed out during grinding to avoid the presence of burrs affecting the accuracy of length detection, and the burrs at the ends of the tubular accessories fall off during grinding; in addition, since the teeth 24 of one track groove 21 are arranged close to the outer groove wall, and the teeth 24 in the other track groove 21 are arranged close to the inner groove wall, the gears 46 in the two track grooves 21 rotate in opposite directions, so that the detection rods 4 in the two track grooves 21 rotate in opposite directions, and the two opposite detection discs 45 rotate in opposite directions, thereby improving the grinding effect of the detection disc 45 on the tubular accessories; the burrs claimed in this embodiment refer to slight burrs, and do not refer to and have the grinding strength of the existing grinder. Grinding can be achieved by generating movement between the grinding surface 451 on the detection disc 45 and the tubular accessories to improve the detection accuracy;

[0045] In the present embodiment, the cross-section of the detection rod 4 and the cross-section of the detection hole 34 are both circular, the detection rod 4 rotates and moves axially in the detection hole 34, and the movement mode of the detection rod 4 is divided into two independent parts, one of which is axial movement, and the end of the detection rod 4 is attracted by magnetism and approaches the bottom of the track groove 21, so that the detection rod 4 moves while maintaining contact with the groove plate 5, and the groove plate 5 is an inclined and circular structure, so that the detection rod 4 moves back and forth in the axial direction; another movement mode of the detection rod 4 is rotation, and the gear 46 at the end of the detection rod 4 is meshed with the teeth 24 to realize the rotation of the detection rod 4, and the width of the gear 24 is consistent with the depth of the track groove 21. When the detection rod 4 moves in the axial direction, the gear 24 at the end of the detection rod 4 remains meshed with the teeth 24, thereby realizing the axial movement and rotation of the detection rod 4;

[0046] In this embodiment, a micro-electric telescopic mechanism 7 is symmetrically arranged on the outer wall of the other end of the detection rod 4. When the two relative detection rods 4 move from front to back, the micro-electric telescopic mechanisms 7 on the two relative detection rods 4 are activated alternately to ensure that one of the detection rods 4 is responsible for clamping, and the detection plate 45 on the other detection rod is responsible for grinding.

[0047] In this embodiment, in combination with the drawings in the specification Fig.10It can be seen that one end of the detection rod 4 is an end fixedly connected to the gear 46, and the other end is an end away from the gear 46. The arc-shaped outer wall of the detection rod 4 and the position away from the gear 46 are symmetrically embedded with a micro-electric telescopic mechanism 7, and the micro-electric telescopic mechanism 7 is staggered with the detection slot 41 on the detection rod 4.

[0048] In this embodiment, during the movement of two relative detection rods 4 from front to back, the two symmetrical micro-electric telescopic mechanisms 7 on one of the detection rods 4 are extended to clamp the inner wall of the workpiece, and the micro-electric telescopic mechanism 7 on the other detection rod 4 is shortened to release the clamping of the inner wall of the workpiece, so that the detection rod 4 that is not clamped on the workpiece will drive the detection plate 45 to produce friction with the end of the workpiece to achieve grinding, so as to improve the grinding effect. The micro-electric telescopic mechanism 7 is alternately activated, which means that the micro-electric telescopic mechanism 7 on one of the detection rods 4 is extended, and the micro-electric telescopic mechanism 7 on the other detection rod 4 is shortened, and the micro-electric telescopic mechanisms 7 on the two detection rods 4 are alternately extended and shortened; the end of the detection rod 4 where the micro-electric telescopic mechanism 7 is set refers to the end of the detection rod 4 inserted into the inner side of the workpiece.

[0049] Embodiment 4: A limit plate 6 is provided at the upper position between the two detection seats 2; a guide plate 61 is provided at each end of the limit plate 6; the limit plate 6 is fixedly connected to the detection seat 2 via an L-shaped block 62; the detection disk 45 on the outer wall of the detection rod 4 can enter the inner side of the limit plate 6 under the guidance of the guide plate 61; the limit plate 6 is arranged close to the corresponding conveyor belt 3.

[0050] In this embodiment, a cleaning brush 63 is provided on one side of the two limiting plates 6 which are away from each other.

[0051] The limit plate 6 and the guide plate 61 at the end are located at the upper position between the two detection seats 2 and are arranged close to the corresponding conveyor belt 3. As the detection rod 4 is driven by the conveyor belt 3, the lower detection rod 4 will drive the detection disc 45 to grind the end of the tube-type fitting. After the lower detection rod 4 moves to the rear position, it turns toward the upper detection rod 4. The upper detection rod 4 will drive the detection disc 45 on the outer wall to enter the inner side of the limit plate 6 along the guide plate 61. During the forward movement of the upper detection rod 4, it will rotate and drive the detection disc 45 to rotate. During the rotation of the detection disc 45, it will contact the cleaning brush 63 on the inner side of the limit plate 6. The cleaning brush 63 can sweep away impurities on the polished surface 451 of the detection disc 45. The detection disc 45 on the upper detection rod 4 and the detection disc 45 on the lower detection rod 4 are in the vertical direction. The detection disc 45 on the upper detection rod 4 is staggered, so that the impurities swept off the cleaning brush 63 will not fall into the detection disc 45 on the lower detection rod 4, so as not to affect the detection; since the detection disc 45 on the upper detection rod 4 is limited to the inner side of the limit plate 6, the other end of the upper detection rod 4 protrudes from the detection disc 45, so one end of the tubular fitting can be directly sleeved on the other end of one of the upper detection rods 4 during the loading process. During the forward movement of the two relative upper detection rods 4, the other end of the other upper detection rod 4 will also be inserted into the inner side of the end of the tubular fitting, so that both ends of the tubular fitting are inserted into the upper detection rod 4, so that the tubular fitting can be quickly loaded. After the upper detection rod 4 turns toward the lower detection rod 4, the detection disc 45 will move out from the inner side of the limit plate 6 and rest against the end of the tubular fitting for the next length detection.

[0052] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art 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. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which 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 linear dimension detection device for automobile pipe fittings, comprising a detection frame and two detection seats symmetrically arranged on the detection frame; characterized in that: The two detection seats are close to each other and are transmission-connected to a conveyor belt with a detection hole; a detection rod is movably connected in the detection hole; the two detection seats are close to each other and are provided with a track groove corresponding to the conveyor belt and with the same shape; the depth of the track groove at the front end is less than the depth at the rear end; one end of the detection rod extends into the track groove; the outer wall of the detection rod is axially provided with a detection groove; a pressure sensor is fixedly connected to one end of the detection rod inside the detection groove; a detection block is slidably connected to the other end of the detection rod inside the detection groove; the detection block and the corresponding pressure sensor are connected by a spring; the outer wall of the other end of the detection rod is sleeved with a detection disk fixedly connected to the detection block.

2. The linear dimension detection device for automobile pipe fittings according to claim 1, characterized in that: Two partitions are movable back and forth and adjusted below the detection seat.

3. The linear dimension detection device for automobile pipe fittings according to claim 1, characterized in that: The upper surface of the detection frame moves left and right and adjusts the detection seat; the distance between the two detection seats is adjustable.

4. The linear dimension detection device for automobile pipe fittings according to claim 2, characterized in that: A slot plate is arranged inside the track slot and near the slot bottom; the slot plate has the same shape as the track slot and a width smaller than that of the track slot; and the inclination angle of the slot plate in the track slot is adjustable.

5. The linear dimension detection device for automobile pipe fittings according to claim 4, characterized in that: One end of the detection rod close to the slot plate is magnetically attracted to the slot plate.

6. The linear dimension detection device for automobile pipe fittings according to claim 1, characterized in that: The groove wall of the track groove is provided with teeth; the end of the detection rod close to the bottom of the track groove is fixedly connected to a gear; the gear is meshed with the teeth for transmission; and the surface of the detection disk in contact with the workpiece is set as a polished surface.

7. The linear dimension detection device for automobile pipe fittings according to claim 6, characterized in that: The teeth in one of the track grooves are arranged on the outer groove wall of the track groove, and the teeth in the other track groove are arranged on the inner groove wall of the track groove; the two opposite detection rods rotate in opposite directions.

8. The linear dimension detection device for automobile pipe fittings according to claim 6, characterized in that: A limit plate is provided at the upper position between the two detection seats; guide plates are provided at the ends of the limit plate; the limit plate is fixedly connected to the detection seat through an L-shaped block; the detection disk on the outer wall of the detection rod can enter the inner side of the limit plate under the guidance of the guide plate; the limit plate is arranged close to the corresponding conveyor belt.

9. The linear dimension detection device for automobile pipe fittings according to claim 8, characterized in that: A cleaning brush is arranged on one side of the two limit plates away from each other.

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