High-precision detection mechanism and conveyor system based on circuit board production

Abstract

The invention discloses a high-precision detection mechanism and conveyor system based on circuit board production, and particularly relates to detection equipment, the high-precision detection mechanism comprises an intermittent detection mechanism, the intermittent detection mechanism comprises rotating covers symmetrically arranged on the two side faces of a circuit board path, and a plurality of telescopic rods are arranged on the rotating covers in a circumferential array mode; the telescopic sticks are assembled at the following two stations: a first station: two of the telescopic sticks on the two rotating covers extend to be attached to a circuit board, so that the eight telescopic sticks are attached to the circuit board to form a detection surface; and the second station is provided with the two rotating covers. The circuit board is clamped in a segmented mode through the telescopic rod, the industrial camera is matched with lamplight to shoot and detect the circuit board of the segmented portion in the single clamping process, after detection, the clamping portion is changed along with rotation of the rotating cover, and then the plane is determined again, so that different segmented faces of the circuit board are detected independently; and the influence of deformation in the heat transfer printing process on shooting of industrial camera shooting is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a high-precision detection mechanism and a conveyor system based on circuit board production. Background Art

[0002] PCB circuit board, also known as printed circuit board, is a way to mass produce circuit boards. PCB circuit boards need to be tested after printing.

[0003] According to patent number CN113030519A, publication (announcement) date: 2021-06-25, a circuit board detection device is disclosed, which is used to detect the circuit of the produced circuit board to detect whether the circuit board can work normally. The second conveying mechanism of the circuit board detection device conveys the circuit board to be detected to the first conveying mechanism. After the first conveying mechanism conveys the circuit board to be detected to the second detection jig, the lifting platform drives the second detection jig to move along the Z direction, so that the circuit board to be detected is clamped between the first detection jig and the second detection jig, so that the first detection jig and the second detection jig detect the circuit of the circuit board to be detected to detect whether the circuit board can work normally. After the detection is completed, the first conveying mechanism unloads the detected circuit board on the second detection jig.

[0004] In the prior art including the above-mentioned patent, after the PCB circuit board is printed, it needs to be inspected by visual inspection equipment, in which it needs to be fixed. However, the PCB circuit board will be deformed due to the high temperature during the thermal transfer process, and a small part of the circuit board will bend. However, the deformed part of the circuit board is still in a qualified state. When grayscale comparison is performed during the inspection in the visual inspection equipment, due to the bending deformation, the overall position of the grayscale camera source captured will deviate greatly from the template, resulting in unqualified inspection. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision detection mechanism and conveyor system based on circuit board production, aiming to solve the problem that bending of circuit boards during visual inspection may cause detection deviations and lead to unqualified detection.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a high-precision detection mechanism based on circuit board production, including an intermittent detection mechanism, which includes a rotating cover symmetrically arranged on both sides of the circuit board path, and a plurality of telescopic rods are arranged on the rotating cover in a circular array, and the telescopic rods are assembled at the following two stations:

[0007] First station: two of the telescopic rods on the two rotating covers are extended to fit the circuit board, so that eight of the telescopic rods fit the circuit board to form a detection surface;

[0008] The second workstation: one of the telescopic sticks of the two rotating covers is shortened as the rotating cover rotates and always fits the circuit board to move and switch the detection surface.

[0009] Preferably, a smoothing mechanism is further included, which includes a smoothing column arranged on the rotating cover and rotating coaxially, and the end of the smoothing column is fitted to the circuit board and moves horizontally as it rotates.

[0010] Preferably, a rubber point is provided at the end of the telescopic stick, and the telescopic stick is slidably connected to a sliding hole provided on the rotating cover, with an elastic member provided therebetween.

[0011] Preferably, the smoothing mechanism further comprises a fixed cam, to which a central shaft is rotatably connected, and the smoothing column is slidably connected to the central shaft and is driven to always fit the outer contour of the fixed cam.

[0012] Preferably, the central shaft rotates one circle after the telescopic stick is switched to the first working position, so that the smoothing column moves horizontally along the two telescopic sticks.

[0013] Preferably, two moving rods are slidably connected to the fixed cam, and the moving rods are provided with inclined surfaces for the telescopic stick to push against. A fixed gear is provided on the rotating shaft, and an inner gear ring is provided on the rotating cover. One of the moving rods is provided with an energy storage gear, and the other moving rod is provided with a movable gear and a locking gear coupled with the energy storage gear. The energy storage gear rotates after the telescopic stick is switched to the first position.

[0014] Preferably, a supporting assembly is further included, which includes supporting rollers symmetrically arranged along the symmetry axis of the rotating cover, and the supporting rollers slide in a vertical direction to fit the circuit board as the rotating cover switches positions.

[0015] Preferably, the supporting assembly further comprises a raised shaft which rotates synchronously with one of the rotating covers, and the raised shaft is provided with coupling teeth in a circular array which correspond one to one with the telescopic sticks, and the coupling teeth are coupled with a tooth plate arranged on the supporting roller.

[0016] A conveyor system based on circuit board production also includes double conveyor belts arranged at both ends of the intermittent detection mechanism, and the circuit board is driven by the double conveyor belts to extend between the four rotating covers.

[0017] Preferably, the double conveyor belts include a fixed seat and an annular conveyor belt rotatably connected to the fixed seat, the annular conveyor belt is provided with "concave" shaped elastic frames in a linear array, and limiting cores are provided in two protrusions of the elastic frames. An open groove and a limiting groove are provided on the fixed seat, and the two limiting cores move with the annular conveyor belt into the open groove to unlock, or enter the limiting groove to lock.

[0018] In the above technical scheme, the present invention provides a high-precision detection mechanism and conveyor system based on circuit board production, which have the following beneficial effects: the circuit board is clamped in sections by a telescopic stick, and the industrial camera cooperates with the light to shoot and detect the circuit board of the section during a single clamping. After the detection, the clamping position is changed by rotating the rotating cover and the plane is redetermined, so that different section surfaces of the circuit board can be detected independently, reducing the influence of deformation in the thermal transfer process on the shooting of the industrial camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0021] Figure 2 An exploded schematic diagram of a supporting assembly provided in an embodiment of the present invention;

[0022] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0023] Figure 4 A schematic diagram of a double conveyor belt provided in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0025] Figure 6 A schematic diagram of an intermittent detection mechanism provided by an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of a partial structure of an intermittent detection mechanism provided in an embodiment of the present invention;

[0027] Figure 8 A cross-sectional schematic diagram of an intermittent detection mechanism provided by an embodiment of the present invention;

[0028] Fig. 9 An explosion schematic diagram of an intermittent detection mechanism provided by an embodiment of the present invention;

[0029] Fig.10 for Fig. 9 Enlarged schematic diagram at point C in the middle.

[0030] Description of reference numerals:

[0031] 1. Double conveyor belt; 11. Fixed seat; 12. Annular conveyor belt; 111. Open slot; 112. Restriction slot; 113. Through slot; 13. Elastic frame; 131. Restriction core; 2. Intermittent detection mechanism; 21. Rotating cover; 211. Sliding hole; 212. Inner gear ring; 22. Telescopic stick; 3. Support assembly; 31. Linkage shaft; 311. Raised shaft; 312. Intercoupling teeth; 313. Reset wall; 32. Support roller ; 320, rotating ball; 321, tooth plate; 322, first spring; 323, base; 33, synchronous belt; 4, smoothing mechanism; 40, rotating shaft; 401, fixed gear; 41, smoothing column; 42, fixed cam; 43, energy storage gear; 431, second spring; 44, moving rod; 440, connecting rod; 441, inclined plane; 442, third spring; 45, movable gear; 46, locking tooth; 5, circuit board. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] Embodiment 1

[0034] like Figure 1-10 As shown, a high-precision detection mechanism based on circuit board production includes an intermittent detection mechanism 2, which includes a rotating cover 21 symmetrically arranged on both sides of the circuit board 5 path, and a plurality of telescopic rods 22 are arranged on the rotating cover 21 in a circular array. The telescopic rods 22 are assembled at the following two stations:

[0035] First station: two of the telescopic rods 22 on the two rotating covers 21 extend to fit the circuit board 5, so that eight telescopic rods 22 fit the circuit board 5 to form a detection surface;

[0036] Second station: One of the telescopic sticks 22 of the two rotating covers 21 is shortened as the rotating covers 21 rotate and always fits the circuit board 5 to move and switch the detection surface.

[0037] Specifically, the rotating cover 21 is distributed as follows: Figure 1 , Figure 2 As shown, there are four rotating covers 21, which are symmetrically arranged on the two sides of the circuit board 5 (with the center axis of the circuit board 5 being the longest in the horizontal direction). Figure 2For reference, the two sides of the circuit board 5 are the left and right sides), the circuit board 5 is driven to be transported into the intermittent detection mechanism 2, so that the two sides of the circuit board 5 are respectively stuck between the two rotating covers 21 and restricted by the telescopic sticks 22, so that the two ends of the circuit board 5 lose the restriction and are fixed by the telescopic sticks 22 alone. At this time, the telescopic sticks 22 are in the first position, that is, two of the telescopic sticks 22 of each rotating cover 21 are extended to fit the circuit board 5 for fixation, so that eight telescopic sticks 22 fit the circuit board 5 to form a detection surface, and the industrial camera takes pictures of the detection surface formed (that is, the detection surface formed by four telescopic sticks 22 on one surface) to perform grayscale detection. After the detection, the rotating cover 21 switches to the second position, that is, the rotating cover 21 is driven to rotate, so that one telescopic stick 22 shortens with the rotation of the rotating cover 21 and always fits the circuit board 5, and the circuit board 5 is driven to move and switch to the next detection surface by the moving and shortened telescopic stick 22. The segmented independent detection method can effectively avoid the occurrence of erroneous detection of deformation.

[0038] Furthermore, the rotating cover 21 can be driven to rotate by a servo motor to switch the detection surface of the second station.

[0039] In the above technical solution, the circuit board 5 is clamped in sections by the telescopic stick 22. During a single clamping, the industrial camera cooperates with the light to shoot and detect the circuit board 5 in the section. After the detection, the clamping position is changed by rotating the rotating cover 21 and the plane is redetermined, so that different section surfaces of the circuit board 5 can be detected independently, reducing the influence of deformation in the thermal transfer process on the shooting of the industrial camera.

[0040] As an embodiment provided by the present invention, a smoothing mechanism 4 is also included, which includes a smoothing column 41 arranged on the rotating cover 21 and rotating coaxially, and the end of the smoothing column 41 rotates horizontally while being attached to the circuit board 5 with the rotation.

[0041] Specifically, there are four leveling columns 41, which are symmetrically arranged in groups of two along the moving path of the circuit board 5. After the circuit board 5 moves to the detection surface, the ends of the leveling columns 41 rotate along the coaxial line of the rotating cover 21 to make the ends of the leveling columns 41 move along the horizontal detection surface, thereby performing horizontal smoothing correction on the position of the circuit board 5 on the detection surface to increase the accuracy of subsequent industrial camera shooting and reduce errors.

[0042] The circuit board 5 is transported between the two rotating covers 21 and restricted by the telescopic rods 22, so that the eight telescopic rods 22 fit the circuit board 5 to form a detection surface, and then the smoothing column 41 is driven to rotate and move along the horizontal detection surface to smooth and correct the detection surface. The industrial camera takes pictures for grayscale detection. After the detection, the rotating cover 21 switches to the second workstation, and the rotating cover 21 is driven to rotate, and the circuit board 5 is driven by a telescopic rod 22 to move and switch to the next detection surface.

[0043] As an embodiment provided by the present invention, a rubber point is arranged at the end of the telescopic stick 22, and the telescopic stick 22 is slidably connected to a sliding hole 211 provided on the rotating cover 21, and an elastic member is arranged between the two.

[0044] Specifically, a rubber point is provided at the end of the telescopic stick 22, which increases the friction between the telescopic stick 22 and the circuit board 5. After a single startup time of more than 86 to 136 hours, the machine needs to be shut down for maintenance and replacement of the rubber point. The elastic member between the telescopic stick 22 and the sliding hole 211 is used to store energy after being compressed at the second workstation. When the detection surface is switched, the energy-stored elastic member pushes the telescopic stick 22 to extend and unfold.

[0045] Furthermore, the rotation angle of the servo motor can be set manually, or conductive sheets can be provided on the telescopic stick 22 and the slide hole 211. When the telescopic stick 22 is extended to the extreme position, the two conductive sheets transmit signals to the servo motor to control the rotation angle.

[0046] The circuit board 5 is transported to between the two rotating covers 21 and restricted by the telescopic rods 22, so that the eight telescopic rods 22 are attached to the circuit board 5 to form a detection surface, and then the smoothing column 41 is driven to rotate and move along the horizontal detection surface to smooth and correct the detection surface. The industrial camera takes pictures for grayscale detection. After the detection, the rotating cover 21 switches to the second workstation, and the rotating cover 21 is driven to rotate and retains the circuit board 5 through a rubber point on a telescopic rod 22, so that the circuit board 5 and the telescopic rod 22 move together and switch to the next detection surface.

[0047] As an embodiment provided by the present invention, the smoothing mechanism 4 also includes a fixed cam 42 , which is rotatably connected to a rotating shaft 40 , and a smoothing column 41 is slidably connected to the rotating shaft 40 and is driven to always fit the outer contour of the fixed cam 42 .

[0048] Specifically, the fixed cam 42 is a fixed component, and the intermittent detection mechanism 2 also includes a frame constructed of profiles. The fixed cam 42 is fixed on the frame. The inner wall of the fixed cam 42 is rotatably connected to the rotating shaft 40. The rotating cover 21 is rotatably connected to the fixed cam 42. The smoothing column 41 is slidably connected to the rotating shaft 40. An elastic member (the elastic member can be a metal spring) is arranged between the two. The elastic member pulls the smoothing column 41 to always fit the fixed cam 42. A depression corresponding to the horizontal detection surface is arranged on the fixed cam 42, so that when the smoothing column 41 slides along the depression, the end of the smoothing column 41 will move along the horizontal detection surface, thereby smoothing and correcting the detection surface.

[0049] The circuit board 5 is transported to between the two rotating covers 21 and restricted by the telescopic rods 22, so that the eight telescopic rods 22 fit the circuit board 5 to form a detection surface, and then the smoothing column 41 is driven to rotate to move along the contour of the fixed cam 42 and thus move along the horizontal detection surface to smooth and correct the detection surface. The industrial camera takes pictures to perform grayscale detection. After the detection, the rotating cover 21 switches to the second workstation, and the rotating cover 21 is driven to rotate to retain the circuit board 5 through a rubber point on a telescopic rod 22, so that the circuit board 5 and the telescopic rod 22 move together and switch to the next detection surface.

[0050] As an embodiment provided by the present invention, the central rotating shaft 40 rotates one circle after the telescopic stick 22 switches to the first working position, so that the smoothing column 41 moves horizontally along the two telescopic sticks 22 .

[0051] Specifically, the rotating shaft 40 does not rotate when the telescopic stick 22 is located at the second station along with the rotating cover 21. After the telescopic stick 22 switches to the first station along with the rotating cover 21, the rotating shaft 40 starts to rotate, so that the smoothing column 41 moves horizontally along the two telescopic sticks 22. The rotating shaft 40 and the rotating cover 21 are respectively controlled by different servo motors to realize staggered rotation.

[0052] As an embodiment provided by the present invention, two moving rods 44 are slidably connected to the fixed cam 42, and the moving rods 44 are provided with an inclined surface 441 for the telescopic stick 22 to push against. A fixed gear 401 is provided on the rotating shaft 40, and an inner gear ring 212 is provided on the rotating cover 21. An energy storage gear 43 is provided on one of the moving rods 44, and a movable gear 45 and a locking tooth 46 coupled to the energy storage gear 43 are provided on the other moving rod 44. The energy storage gear 43 rotates after the telescopic stick 22 switches to the first working position.

[0053] Specifically, the two moving rods 44 are respectively an A moving rod 44 and a B moving rod 44, an energy storage gear 43 is provided on the A moving rod 44 through a connecting rod 440, and a movable gear 45 and a locking tooth 46 are provided on the B moving rod 44, a third spring 442 is provided between the fixed cam 42 and the two moving rods 44, and a second spring 431 is provided between the energy storage gear 43 and the frame. The telescopic stick 22 will be compressed when it is in the second position, so that part of the telescopic stick 22 extends out along the sliding hole 211, and with the rotation of the rotating cover 21, the inclined surfaces 441 on the two moving rods 44 are pushed in turn, driving the moving rods 44 to slide along the fixed cam 42, and the inclined surfaces 441 on the two moving rods 44 face opposite directions, so that the moving directions of the two moving rods 44 are different. At this time, as the A moving rod 44 slides first, the energy storage gear 43 will move to the first side (with Figure 7For reference, the left side is the first side and the right side is the second side), so that the energy storage gear 43 and the inner gear ring 212 are coupled, and the energy storage gear 43 and the locking tooth 46 are decoupled, thereby causing the energy storage gear 43 to rotate through the second spring 431 to store energy. After rotating until the telescopic stick 22 leaves the inclined surface 441 range of the A moving rod 44, the third spring 442 pulls the A moving rod 44 to reset, so that the energy storage gear 43 and the inner gear ring 212 are decoupled and the locking tooth 46 is recoupled to rotate. Subsequently, the inclined surface 441 of the B moving rod 44 is pushed by the telescopic stick 22, so that the B moving rod 44 moves toward the second side, so as to drive the movable gear 45 to couple the energy storage gear 43 and drive the locking tooth 46 to decouple from the energy storage gear 43, so that the energy storage gear 43 rotates through the movable gear 45 to rotate and couple the fixed gear 401, thereby driving the intermediate shaft 40 to rotate.

[0054] First, the rotating cover 21 rotates to store energy in the energy storage gear 43, and the circuit board 5 is transported to between the two rotating covers 21 and restricted by the telescopic sticks 22, so that the eight telescopic sticks 22 fit the circuit board 5 to form a detection surface. At this time, the telescopic sticks 22 are extended to the position, and then the smoothing column 41 rotates with the energy storage gear 43 coupled with the movable gear 45 to drive the fixed gear 401 to move along the contour of the fixed cam 42 and thus move along the horizontal detection surface to smooth and correct the detection surface. The industrial camera takes pictures for grayscale detection. After the detection, the rotating cover 21 switches to the second workstation, and the rotating cover 21 is driven to rotate, and the circuit board 5 is retained by a rubber point on a telescopic stick 22, so that the circuit board 5 and the telescopic stick 22 move together and switch to the next detection surface.

[0055] As an embodiment provided by the present invention, it also includes a supporting component 3, which includes supporting rollers 32 symmetrically arranged along the symmetry axis of the rotating cover 21. The supporting rollers 32 slide along the vertical direction to fit the circuit board 5 as the rotating cover 21 switches the working position.

[0056] Specifically, the supporting roller 32 can move in the vertical direction. A rotating ball 320 is provided on the supporting roller 32. The rotating ball 320 fits the circuit board 5. When the rotating cover 21 rotates to move the circuit board 5, the supporting roller 32 will be lifted up to fit the circuit board 5. The two supporting rollers 32 cooperate with the telescopic stick 22 in a compressed state to move the circuit board 5, thereby increasing stability during movement.

[0057] First, the rotating cover 21 rotates to store energy in the energy storage gear 43, and the circuit board 5 is transported to between the two rotating covers 21 and restricted by the telescopic sticks 22, so that the eight telescopic sticks 22 fit the circuit board 5 to form a detection surface. At this time, the telescopic sticks 22 are extended to the position, and then the smoothing column 41 rotates with the energy storage gear 43 coupling the movable gear 45 to drive the fixed gear 401 to move along the contour of the fixed cam 42 and thus move along the horizontal detection surface to smooth and correct the detection surface. The industrial camera takes pictures for grayscale detection. After the detection, the rotating cover 21 switches to the second workstation, and the rotating cover 21 is driven to rotate, and the circuit board 5 is retained by a rubber point on a telescopic stick 22. At the same time, the two supporting rollers 32 are lifted up to fit the circuit board 5, so that the circuit board 5 and the telescopic sticks 22 move together and switch to the next detection surface.

[0058] As the optimal embodiment provided by the present invention, the supporting assembly 3 also includes a raised shaft 311 that rotates synchronously with one of the rotating covers 21, and a circular array of coupling teeth 312 corresponding to the telescopic sticks 22 are provided on the raised shaft 311, and the coupling teeth 312 are coupled to the tooth plate 321 set on the supporting roller 32.

[0059] Specifically, a reset wall 313 is clamped between the coupling teeth 312, a linkage shaft 31 is arranged on the raised shaft 311, a synchronous belt 33 is sleeved between the linkage shaft 31 and one of the rotating covers 21, a connecting portion is arranged between the two supporting rollers 32, a base 323 is arranged on the profile, the connecting portion is slidably connected to the base 323, and a first spring 322 is arranged between the two. When the rotating cover 21 is in the second station for rotation, the linkage shaft 31 drives the raised shaft 311 to rotate, so that the coupling teeth 312 begin to couple with the tooth plate 321 to drive the supporting roller 32 to move vertically upward and stretch the first spring 322. When the rotating cover 21 switches to the first station with rotation, the reset wall 313 corresponds to the tooth plate 321, so that the stretched first spring 322 pulls the supporting roller 32 to reset downward in the vertical direction to complete the supporting work.

[0060] First, the rotating cover 21 rotates to store energy in the energy storage gear 43, and the circuit board 5 is transported to between the two rotating covers 21 and restricted by the telescopic sticks 22, so that the eight telescopic sticks 22 fit the circuit board 5 to form a detection surface. At this time, the telescopic sticks 22 are extended to the position, and then the smoothing column 41 rotates with the energy storage gear 43 coupled with the movable gear 45 to drive the fixed gear 401 to move along the contour of the fixed cam 42 and thus move along the horizontal detection surface to smooth and correct the detection surface. The industrial camera takes pictures for grayscale detection. After the detection, the rotating cover 21 switches to the second station, and the rotating cover 21 is driven to rotate, and the circuit board 5 is retained by a rubber point on a telescopic stick 22. At the same time, the two supporting rollers 32 are lifted up to fit the circuit board 5, so that the circuit board 5 and the telescopic sticks 22 move together and switch to the next detection surface. When the rotating cover 21 switches to the first station, the reset wall 313 corresponds to the tooth plate 321, so that the stretched first spring 322 pulls the supporting roller 32 to reset downward in the vertical direction.

[0061] Embodiment 2

[0062] like Figure 1 , 4 As shown in FIG. 5 , a conveyor system based on circuit board production also includes double conveyor belts 1 arranged at both ends of the intermittent detection mechanism 2 , and the circuit board 5 is driven by the double conveyor belts 1 to extend between the four rotating covers 21 .

[0063] Specifically, during transportation, the circuit board 5 is placed on the double conveyor belt 1, and then as the double conveyor belt 1 is transported, the circuit board 5 is conveyed to the rotating cover 21 and fixed by the telescopic rod 22 to wait for inspection. After inspection, the circuit board 5 is fixed by the double conveyor belt 1 for the next step of transportation.

[0064] As the optimal embodiment provided by the present invention, the double conveyor belt 1 includes a fixed seat 11 and an annular conveyor belt 12 rotatably connected to the fixed seat 11, and a "concave" elastic frame 13 is arranged in a linear array on the annular conveyor belt 12, and a limiting core 131 is arranged in the two protrusions of the elastic frame 13. An open groove 111 and a limiting groove 112 are opened on the fixed seat 11, and the two limiting cores 131 move with the annular conveyor belt 12 into the open groove 111 to unlock, or enter the limiting groove 112 to lock.

[0065] Specifically, a through groove 113 is provided on the double conveyor belt 1 for the limiting core 131 to enter the open groove 111 or the limiting groove 112. When the double conveyor belt 1 collects the circuit board 5, the elastic frame 13 in the unlocked state gradually fits the circuit board 5 as it is transported by the circular conveyor belt 12. During the fitting process, the two protrusions of the "concave" elastic frame 13 will gradually bend to squeeze the circuit board 5 for fixation. As the transportation continues, the limiting core 131 will enter the limiting groove 112 from the open groove 111, so that the bent elastic frame 13 will be locked to maintain the squeezed state to fix the circuit board 5. When the double conveyor belt 1 conveys the circuit board 5 to the rotating cover 21 and is fixed by the telescopic rod 22, as the limiting core 131 enters the open groove 111 along the limiting groove 112, the limiting core 131 will gradually move away from the circuit board 5 along the circular contour of the circular conveyor belt 12 to restore the vertical state of the two protrusions, thereby supporting the suspended circuit board 5, thereby increasing the accuracy of the circuit board 5 when it moves from the double conveyor belt 1 to the intermittent detection mechanism 2.

[0066] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision detection mechanism based on circuit board production, It is characterized in that The invention comprises an intermittent detection mechanism (2), which comprises a rotating cover (21) symmetrically arranged on two sides of a circuit board (5) path, a plurality of telescopic rods (22) are arranged in a circular array on the rotating cover (21), and the telescopic rods (22) are assembled at the following two stations: First workstation: two of the telescopic rods (22) on the two rotating covers (21) are extended to fit the circuit board (5), so that eight of the telescopic rods (22) fit the circuit board (5) to form a detection surface; Second workstation: one of the telescopic sticks (22) of the two rotating covers (21) is shortened as the rotating covers (21) rotate and always fits the circuit board (5) to move and switch the detection surface.

2. A high-precision detection mechanism based on circuit board production according to claim 1, It is characterized in that It also comprises a smoothing mechanism (4), which comprises a smoothing column (41) arranged on the rotating cover (21) and rotating coaxially, and the end of the smoothing column (41) rotates with the circuit board (5) and moves horizontally.

3. A high-precision detection mechanism based on circuit board production according to claim 1, It is characterized in that A rubber point is arranged at the end of the telescopic stick (22), and the telescopic stick (22) is slidably connected to a sliding hole (211) provided on the rotating cover (21), with an elastic member arranged between the two.

4. A high-precision detection mechanism based on circuit board production according to claim 2, It is characterized in that The smoothing mechanism (4) further comprises a fixed cam (42), the fixed cam (42) being rotatably connected to a central rotating shaft (40), and the smoothing column (41) being slidably connected to the central rotating shaft (40) and being driven to always fit the outer contour of the fixed cam (42).

5. A high-precision detection mechanism based on circuit board production according to claim 4, It is characterized in that The central rotating shaft (40) rotates one circle after the telescopic sticks (22) are switched to the first working position, so that the smoothing column (41) moves horizontally along the two telescopic sticks (22).

6. A high-precision detection mechanism based on circuit board production according to claim 5, It is characterized in that Two moving rods (44) are slidably connected to the fixed cam (42), and the moving rods (44) are provided with inclined surfaces (441) for the telescopic stick (22) to push against. The central rotating shaft (40) is provided with a fixed gear (401), and the rotating cover (21) is provided with an inner gear ring (212). One of the moving rods (44) is provided with an energy storage gear (43), and the other moving rod (44) is provided with a movable gear (45) and a locking tooth (46) coupled to the energy storage gear (43). The energy storage gear (43) rotates after the telescopic stick (22) switches to the first working position.

7. A high-precision detection mechanism based on circuit board production according to claim 1, It is characterized in that It also comprises a supporting assembly (3), which comprises supporting rollers (32) symmetrically arranged along the symmetry axis of the rotating cover (21), and the supporting rollers (32) slide in a vertical direction to fit the circuit board (5) as the rotating cover (21) switches positions.

8. A high-precision detection mechanism based on circuit board production according to claim 7, It is characterized in that The supporting assembly (3) further comprises a raised shaft (311) which rotates synchronously with one of the rotating covers (21); the raised shaft (311) is provided with inter-coupling teeth (312) which correspond one to one with the telescopic rods (22) in a circumferential array; the inter-coupling teeth (312) are coupled to a tooth plate (321) provided on the supporting roller (32).

9. A conveyor system based on circuit board production, It is characterized in that It comprises the high-precision detection mechanism as described in claims 1 to 8 above, and also comprises double transmission belts (1) arranged at both ends of the intermittent detection mechanism (2), and the circuit board (4) is driven by the double transmission belts (1) to extend between the four rotating covers (21).

10. A conveyor system based on circuit board production according to claim 9, It is characterized in that The double-strip transmission belt (1) comprises a fixed seat (11) and an annular conveyor belt (12) rotatably connected to the fixed seat (11); the annular conveyor belt (12) is provided with "concave" elastic frames (13) in a linear array; limiting cores (131) are provided in two protrusions of the elastic frame (13); an open groove (111) and a limiting groove (112) are provided on the fixed seat (11); the two limiting cores (131) move with the annular conveyor belt (12) into the open groove (111) to unlock, or enter the limiting groove (112) to lock.

Images