Die inner hole detection device and detection method

Abstract

The invention provides a mold inner hole detection device and a detection method. The mold detection device comprises a test board, a mounting disc, a laser test mechanism, an adjustable mechanism and a laser contour detection mechanism, a lower die is erected above the test bench, a die core is installed in the lower die, an upper die plate is slidably connected above the lower die, a to-be-tested hole is formed in the middle of the upper die plate, upper die holes are formed in the upper die plate and located around the to-be-tested hole, and the upper die holes are communicated with the to-be-tested hole. According to the scheme, the difference value of the inner diameters of the topmost position and the bottommost position of the to-be-detected hole can be accurately detected in an omnibearing mode, then when the laser testing mechanism moves to the bottommost end, the angle of the polarizer can be changed, the angle of laser rays is made to move downwards, the perpendicularity of the axis can be detected, through type detection can be achieved, and the detection accuracy is improved. And secondly, the hollow pipe and the to-be-detected hole do not need to be concentrically calibrated in the calibration process, and only the hollow pipe needs to enter the to-be-detected hole.

Description

Technical Field

[0001] The present invention relates to the technical field of mold detection, and in particular to a mold inner hole detection device and a detection method. Background Art

[0002] A mold is a tool used to make molded objects. This tool is composed of various parts. Different molds are composed of different parts. The shape of the object is processed by changing the physical state of the molded material. When molds on the market are manufactured, the upper mold, lower mold and mold core are matched with various positioning holes to achieve mold matching. Therefore, the inner hole of the mold needs to be inspected during mold processing. Whether it is a positioning hole or a blanking hole, the inner diameter of the inner hole of the mold needs to be detected.

[0003] Announcement No. CN216925478U provides an aperture detection device for a notebook mold, including: a main body component, the main body component includes a storage plate, a support column, a storage slot, a first support plate and a first rodless cylinder; a detection mechanism, the detection mechanism includes a box, a display screen, a PLC controller, a relay, a laser ranging sensor and a through slot; the hydraulic cylinder is positioned by the first rodless cylinder and the second rodless cylinder, and then the piston rod of the hydraulic cylinder drives the connecting rod to move, the moving connecting rod drives the laser ranging sensor to insert into the hole of the notebook mold, and then the aperture is detected by the laser ranging sensor, and then the data of the laser ranging sensor is received by the PLC controller, and then the data received by the PLC controller is displayed through the display screen, thereby completing the detection of the aperture of the notebook mold, thereby reducing the human resources consumed during detection and improving work efficiency.

[0004] When testing existing molds on the market, only the aperture deviation can be tested. If the axis of the hole to be tested deviates, it is not convenient to perform multi-faceted testing. The testing method is single. If the roughness requirements of the inner hole of the mold are very high, if the traditional testing method is used, the accuracy deviation of the test will be large.

[0005] Therefore, it is necessary to provide a mold inner hole detection device and a detection method to solve the above technical problems. Summary of the invention

[0006] The present invention provides a mold inner hole detection device and a detection method, which solve the technical problem of the single detection method of the traditional testing method in the related technology.

[0007] In order to solve the above technical problems, the present invention provides a mold inner hole detection device, which is characterized by comprising a test table, a mounting plate, a laser testing mechanism, an adjustable mechanism and a laser contour detection mechanism;

[0008] A lower mold is arranged above the test bench, a mold core is installed inside the lower mold, an upper mold is slidably connected above the lower mold, a hole to be tested is opened in the middle of the upper mold, and upper mold holes are opened inside the upper mold and around the hole to be tested;

[0009] A lifting cylinder is installed on one side of the test bench, and a lifting plate is installed on the top of the lifting cylinder;

[0010] The laser testing mechanism comprises an electric turntable fixedly mounted on the axis of the bottom of the mounting plate, a hollow tube being mounted on the bottom end of the electric turntable, laser generators being mounted on both sides of the hollow tube, two avoidance grooves being provided inside the hollow tube and below the laser generator, mounting frames being fixedly mounted on the inner walls of the two avoidance grooves, flip frames being rotatably connected inside the two mounting frames, guide wheels being rotatably connected inside the two flip frames and located inside the hollow tube, polarizers being fixedly mounted inside the two flip frames and located directly below the two laser generators, a slide rod being slidably connected at the axis of the bottom end of the hollow tube, and a cone plate being fixedly mounted on the top end of the slide rod;

[0011] The adjustable mechanism comprises four fixing rods fixedly mounted on the mounting plate, and a top plate is fixedly mounted on the top of the four fixing rods;

[0012] The laser contour detection mechanism includes a fixed plate fixedly mounted on the inner wall of the hollow tube, a sliding rod is slidably connected to the axis of the fixed plate, a knob is threadedly connected to the outer wall of the fixed plate, an inner plate is fixedly mounted on the inner wall of the hollow tube and below the fixed plate, a linkage plate is fixedly mounted at the bottom end of the sliding rod, both sides of the linkage plate are rotatably connected to connecting plates, the outer walls of the two connecting plates are rotatably connected to beam expanders, and a reset spring is fixedly mounted at the bottom of the linkage plate;

[0013] The outer wall of the hollow tube is provided with a groove to ensure that the beam expander can pass through, and is also provided with an operating groove to ensure that the sliding rod can be operated. The front end of the knob extends to the outer wall of the sliding rod, and the bottom end of the reset spring is fixedly connected to the inner plate.

[0014] Preferably, the outer walls of the two guide wheels are in contact with the outer wall of the cone plate, the cross-section of the cone plate is a conical structure that is narrow at the top and wide at the bottom, the polarizer is a semi-transparent structure, and the beam expander is a fully transparent structure.

[0015] Preferably, the two polarizers are configured at a forty-five degree angle to the horizontal plane, and the top of the mounting tube and the lifting plate are fixedly mounted.

[0016] Preferably, a motor is installed inside the mounting cylinder by bolts, the output shaft of the motor is connected to a gear through a keyway located below the top plate, the outer wall of the gear is meshingly connected to a rack, and the number of racks is four, four limit grooves are provided inside the mounting plate, sliders are slidably connected inside the four limit grooves, positioning holes are provided inside the four sliders, and trigger plates are fixed on both horizontal sides of the mounting plate.

[0017] Preferably, the four racks are all threadedly connected to the side walls of the four sliders, and the cross-section of the slider is an "I"-shaped structure.

[0018] Preferably, the four racks are stacked in sequence from bottom to top, and the axis of the gear is rotatably connected to the axis of the mounting plate.

[0019] Preferably, it also includes a visual testing mechanism, which includes a positioning frame fixed on the top of the test bench, a rotating plate is rotatably connected to the top of the positioning frame, a roller is rotatably connected to the inside of the rotating plate, an industrial line scan camera is rotatably connected to the inside of the rotating plate and below the roller, and a positioning bolt is threadedly connected to the outer wall of the rotating plate.

[0020] Preferably, the cross-section of the rotating plate is an "L"-shaped structure, and the front end of the positioning bolt contacts the side wall of the industrial line scan camera.

[0021] Preferably, the positioning frame, rotating plate, roller, industrial line scan camera and positioning bolt are mirror-distributed on the left side of the axis of the mounting plate.

[0022] A method for detecting inner holes of a mold comprises the following steps:

[0023] Step S: laser testing of the hole to be tested;

[0024] The user can place the mold to be tested on the test bench after the film is combined. During the test, the lifting cylinder can be started to freely control the vertical up and down movement of the entire installation plate and the components above;

[0025] Align the hole to be tested inside the upper template with the bottom position of the laser test mechanism (precision calibration does not require special adjustment and control, just ensure that the laser test mechanism enters the hole to be tested);

[0026] Start the laser generator, which emits a vertically downward laser beam. When the laser beam enters the interior of the polarizer, the 45-degree polarizer deflects the vertically downward laser beam by 90 degrees, generating a horizontal laser beam, which finally enters the inner wall of the hole to be measured.

[0027] During the test, the laser beam needs to be lowered from the top of the hole to be tested to the bottom of the hole to be tested to achieve aperture detection. During the test, the distance between the two laser generators is fixed, that is, the a value. When the laser generator on the left is turned and shot into the left inner wall of the hole to be tested, when the laser generator on the right is turned and shot into the right inner wall of the hole to be tested, if the inner diameter deviation occurs during the descent process, when the a value remains unchanged, it will only affect the numerical deviation on the left and right sides, so accurate laser detection can be achieved;

[0028] Step S: visual test;

[0029] After the upper template is demolded, the installation plate can continue to rise. When the installation plate is rising, the top surface of the installation plate will eventually drive the trigger plate to rise and resist the roller. When the roller is subjected to force from above, it will control the rotating plate to flip along the top hinge of the positioning frame. During the flipping process, the industrial line scan camera can be close to the lower mold and can be aimed at the mold core to realize visual inspection, so as to detect whether the upper and lower molds will be affected by extrusion on the mold core in the mold closing and parting states.

[0030] Compared with the related art, the mold inner hole detection device and detection method provided by the present invention have the following beneficial effects:

[0031] Compared with the traditional detection method, this case adopts laser detection. During the test, a fixed distance value is set between the two laser generators, and the laser generators on both sides are turned 90 degrees to shoot at the inner walls of the hole to be tested. Then, they descend from top to bottom during the test. If the inner wall of the hole to be tested deviates, the laser shooting points on both sides will be affected by data deviation. Therefore, this design can accurately detect the inner diameter difference between the top and the bottom of the hole to be tested in an all-round way. Secondly, when the laser test mechanism moves to the bottom, it will change the angle of the polarizer, so as to move the angle of the laser beam downward, so that the verticality of the axis can be detected, and through-type detection can also be achieved. Secondly, the hollow tube and the hole to be tested do not need to be concentrically calibrated during the calibration process. It is only necessary to ensure that the hollow tube enters the hole to be tested.

[0032] During the inner diameter deviation detection process, the user can control the two beam expanders to switch from the retracted state to the extended state. In this way, the two laser beams can be expanded to form four laser points. The beam expander can form two beams and the polarizer can form two ends. In this way, the inner wall of the hole to be tested can be subjected to line scanning imaging detection in all directions, which can be used for more accurate smoothness accuracy detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the best structure provided by the present invention;

[0035] Figure 2 for Figure 1 The schematic diagram of the split structure of the lower die and the upper die is shown;

[0036] Figure 3 for Figure 1 The schematic diagram of the adjustable mechanism structure shown;

[0037] Figure 4 for Figure 3 The schematic diagram of the structure viewed from above is shown;

[0038] Figure 5 for Figure 3 Schematic diagram of the gear and rack structure shown;

[0039] Figure 6 for Figure 5 The plan view of the position distribution of the fixed rod and the rack shown;

[0040] Figure 7 for Figure 4 The schematic diagram of the laser testing mechanism and the laser contour detection mechanism shown;

[0041] Figure 8 for Figure 7 The laser testing mechanism shown is a schematic diagram of the aperture testing state;

[0042] Fig. 9 for Figure 8 The schematic diagram of the axis testing state when the laser testing mechanism shown is lowered to the bottom;

[0043] Fig.10 for Figure 1 The schematic diagram of the visual testing mechanism structure is shown.

[0044] Description of Figure Numbers:

[0045] 1. Test bench;

[0046] 2. Lifting cylinder;

[0047] 3. Lifting plate, 4. Mounting plate;

[0048] 5. Laser testing mechanism, 51. Electric turntable, 52. Hollow tube, 53. Laser generator, 54. Sliding rod, 55. Cone plate, 56. Mounting frame, 57. Turning frame, 58. Guide wheel, 59. Polarizer, 510. Avoidance groove;

[0049] 6. adjustable mechanism, 61. limit groove, 62. slider, 63. positioning hole, 64. fixing rod, 65. top plate, 66. mounting cylinder, 67. motor, 68. trigger plate, 69. gear, 610. rack;

[0050] 7. Visual testing mechanism, 71. Positioning frame, 72. Turning plate, 73. Roller, 74. Industrial line scan camera, 75. Positioning bolt;

[0051] 8. Lower mold, 9. mold core, 10. upper mold plate;

[0052] 11. Upper die hole, 12. Hole to be measured;

[0053] 13. Laser contour detection mechanism, 131. Fixed plate, 132. Sliding rod, 133. Knob, 134. Inner plate, 135. Linkage plate, 136. Connecting plate, 137. Beam expander, 138. Return spring. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] The invention provides a mold inner hole detection device and a detection method.

[0056] First embodiment:

[0057] Please combine Figure 1 , Figure 2 , Figure 4 , Figures 7 to 9 , a mold inner hole detection device, including a test table 1, a mounting plate 4, a laser testing mechanism 5, an adjustable mechanism 6 and a laser contour detection mechanism 13;

[0058] A lower mold 8 is mounted above the test bench 1, a mold core 9 is installed inside the lower mold 8, an upper mold plate 10 is slidably connected above the lower mold 8, a hole 12 to be tested is opened in the middle of the upper mold plate 10, and upper mold holes 11 are opened inside the upper mold plate 10 and around the hole 12 to be tested;

[0059] A lifting cylinder 2 is installed on one side of the test bench 1, and a lifting plate 3 is installed on the top of the lifting cylinder 2;

[0060] See also Figure 1 : The user can place the mold to be tested after the film is combined on the test bench 1. During the test, the lifting cylinder 2 can be started to freely control the vertical up and down movement of the entire installation plate 4 and the components above.

[0061] The laser testing mechanism 5 comprises an electric turntable 51 fixedly mounted on the axis at the bottom of the mounting plate 4, a hollow tube 52 is mounted on the bottom end of the electric turntable 51, laser generators 53 are mounted on both sides of the hollow tube 52, two avoidance grooves 510 are provided inside the hollow tube 52 and below the laser generator 53, mounting frames 56 are fixedly mounted on the inner walls of the two avoidance grooves 510, flip frames 57 are rotatably connected inside the two mounting frames 56, guide wheels 58 are rotatably connected inside the two flip frames 57 and inside the hollow tube 52, polarizers 59 are fixedly mounted inside the two flip frames 57 and directly below the two laser generators 53, a slide bar 54 is slidably connected at the axis at the bottom end of the hollow tube 52, a cone plate 55 is fixedly mounted on the top end of the slide bar 54;

[0062] The adjustable mechanism 6 includes four fixing rods 64 fixed on the mounting plate 4 , and a top plate 65 is fixed on the top of the four fixing rods 64 .

[0063] See 2 and Figure 4 : Before testing, the hole 12 to be tested inside the upper template 10 needs to be aligned with the bottom position of the laser testing mechanism 5 (no special adjustment control is required for accurate calibration);

[0064] See also Figure 7 and Figure 8 : During the test, the hollow tube 52 needs to be controlled to descend to the inside of the hole 12 to be tested, and then the laser generator 53 is started. The laser generator 53 emits a vertically downward laser beam. When the laser beam enters the inside of the polarizer 59, the 45-degree polarizer 59 deflects the vertically downward laser beam by 90 degrees to generate a horizontal laser beam, and finally the laser beam is projected onto the inner wall of the hole 12 to be tested;

[0065] During the test, the laser beam needs to be lowered from the top of the hole 12 to be tested to the bottom of the hole 12 to achieve aperture detection. During the test, the distance between the two laser generators 53 is fixed, that is, the a value. When the laser generator 53 on the left is turned and shot into the left inner wall of the hole 12 to be tested, when the laser generator 53 on the right is turned and shot into the right inner wall of the hole 12 to be tested, if the inner diameter deviation occurs during the descent process, when the a value remains unchanged, it will only affect the numerical deviation on the left and right sides, so accurate laser detection can be achieved;

[0066] See also Fig. 9 : When the laser testing mechanism 5 moves to the bottom of the hole 12 to be tested, it is blocked by the bottom, and the sliding rod 54 will control the cone plate 55 to rise. When the cone plate 55 rises, it can affect the guide wheels 58 on both sides of the force to drive the flip frame 57 to control the polarizer 59 to flip downward. During the flipping process, the polarizer 59 can change the angle of the laser beam and move downward along the inner wall of the hole 12 to be tested. During the sliding downward process, it can detect the verticality of the axis while also achieving a through-type test.

[0067] The outer walls of the two guide wheels 58 fit with the outer wall of the cone plate 55 , and the cross section of the cone plate 55 is a conical structure that is narrow at the top and wide at the bottom.

[0068] The two polarizers 59 are configured to form a 45-degree angle with the horizontal plane, and the top of the mounting tube 66 is fixedly mounted to the lifting plate 3 .

[0069] Preferably, the two guide wheels 58 may be made of hard rubber material.

[0070] It can be understood that the two avoidance grooves 510 are set downward, so that when the turning frame 57 is turning over, the setting of the avoidance grooves 510 can ensure that the turning frame 57 can turn over smoothly and avoid turning interference.

[0071] The laser contour detection mechanism 13 includes a fixed plate 131 fixedly mounted on the inner wall of the hollow tube 52, a sliding rod 132 is slidably connected to the axis of the fixed plate 131, a knob 133 is threadedly connected to the outer wall of the fixed plate 131, an inner plate 134 is fixedly mounted on the inner wall of the hollow tube 52 and located below the fixed plate 131, a linkage plate 135 is fixedly mounted at the bottom end of the sliding rod 132, both sides of the linkage plate 135 are rotatably connected to connecting plates 136, the outer walls of the two connecting plates 136 are rotatably connected to beam expanders 137, and a reset spring 138 is fixedly mounted at the bottom of the linkage plate 135;

[0072] The outer wall of the hollow tube 52 is provided with a groove to ensure that the beam expander 137 can pass through, and is also provided with an operating groove to ensure that the sliding rod 132 can be operated. The front end of the knob 133 extends to the outer wall of the sliding rod 132, and the bottom end of the reset spring 138 is fixedly connected to the inner plate 134.

[0073] See also Figure 7 : When the inner diameter deviation is detected, the two beam expanders 137 are in a retracted state, and the lasers emitted downward by the two laser generators 53 will not pass through the beam expanders 137;

[0074] If the user needs to detect the inner wall contour of the hole 12 to be tested, the user needs to slide the sliding rod 132 downward on the fixed plate 131. The sliding rod 132 moving downward is forced to control the linkage plate 135 to move downward. When the linkage plate 135 moves downward, the connecting plates 136 on both sides can be controlled to extend mutually. During the extension process, the two beam expanders 137 can be forced to move away from each other in the horizontal direction on the inner plate 134 to achieve synchronous extension.

[0075] After extension, the laser emitted downward by the laser generator 53 will be expanded by 90 degrees through the beam expanders 137 at their respective positions. At this time, four laser points will be formed on the inner wall of the hole 12 to be tested. Then the user can start the electric turntable 51 to control the rotation of the entire hollow tube 52 to perform contour line scanning detection in all directions inside the hole 12 to be tested.

[0076] It should be noted that the polarizer 59 is of a semi-transparent structure, and the beam expander 137 is of a fully transparent structure, so that it can be ensured that the laser beam can pass through the polarizer 59 after passing through the beam expander 137, and the laser beam passing through the polarizer 59 will not penetrate the polarizer 59.

[0077] Moreover, this embodiment can be applied to any mold on the market, whether it is a casting mold, a stamping mold, a sheet metal mold, etc., it can realize inner hole detection, and can meet all-round detection needs for positioning holes or other inner holes with higher precision requirements.

[0078] This embodiment: Compared with the traditional detection method, this case adopts laser detection. During the test, a fixed distance value is set between the two laser generators 53, and the laser generators 53 on both sides are turned 90 degrees to shoot at the inner walls of the two sides of the hole 12 to be tested, and then descend from top to bottom during the test. If the inner wall of the hole 12 to be tested deviates, the laser shooting points on both sides will be affected by data deviation. Therefore, such a design can accurately detect the inner diameter difference between the top and bottom positions of the hole 12 to be tested in an all-round manner. Secondly, when the laser testing mechanism 5 moves to the bottom, it will change the angle of the polarizer 59, so that the angle of the laser beam moves downward, so that the verticality of the axis can be detected, and through-type detection can also be achieved. Secondly, the hollow tube 52 and the hole 12 to be tested do not need to be concentrically calibrated during the calibration process. It is only necessary to ensure that the hollow tube 52 enters the hole 12 to be tested.

[0079] During the inner diameter deviation detection process, the user can control the two beam expanders 137 to switch from a retracted state to an extended state in a linked manner, so that the two laser beams can be expanded to form four laser points. The beam expander 137 can form two beams, and the polarizer 59 can form two ends. In this way, the inner wall of the hole 12 to be tested can be subjected to line scanning imaging detection in all directions, which can be used for more accurate smoothness accuracy detection.

[0080] Second embodiment:

[0081] See also Figures 2 to 6 A motor 67 is installed inside the mounting tube 66 by bolts, and the output shaft of the motor 67 is connected to a gear 69 through a keyway located below the top plate 65. The outer wall of the gear 69 is meshed with a rack 610, and the number of racks 610 is four. Four limiting grooves 61 are opened inside the mounting plate 4, and sliders 62 are slidably connected inside the four limiting grooves 61. Positioning holes 63 are opened inside the four sliders 62, and trigger plates 68 are fixed on both horizontal sides of the mounting plate 4.

[0082] See also Figure 2 : Four upper die holes 11 are provided inside the upper die plate 10, and the upper die holes 11 are mainly responsible for demoulding.

[0083] See also Figure 3 and Figure 5 : The user can start the motor 67 to control the gear 69 to rotate clockwise or counterclockwise. When the gear 69 rotates clockwise, it can engage and drive the four racks 610 to change from an extended state to a contracted state. When the rack 610 is extended or contracted, it can drive the four sliders 62 to slide synchronously on the limit groove 61, thereby changing the range of the four positioning holes 63.

[0084] The four racks 610 are all threadedly connected to the side walls of the four sliders 62 , and the cross-section of the slider 62 is an “I”-shaped structure.

[0085] The four racks 610 are stacked in sequence from bottom to top, and the axis of the gear 69 is rotatably connected to the axis of the mounting plate 4 .

[0086] Understandable: From Figure 5 As can be seen in the figure, the four sliders 62 are engaged and slide in the corresponding limit grooves 61, so that the sliders 62 can be more stable during the sliding process. Secondly, the racks 610 are stacked layer by layer to ensure that the four racks 610 do not affect each other when sliding, avoiding movement interference.

[0087] from Figure 6 It can be seen that the positions of the four fixed rods 64 are distributed on the outermost edges of the corresponding two racks 610, and the crooked and toothless edges of the racks 610 do not contact the fixed rods 64. This can not only ensure that the installation position of the motor 67 is not affected, but also ensure that the four racks 610 can move smoothly without being interfered by the fixed rods 64.

[0088] This embodiment: After the internal laser test of the hole 12 to be tested is completed in the first embodiment, the user needs to separate the upper mold plate 10 and the lower mold 8 to realize demolding. Before demolding, the position of the upper mold hole 11 of the mold needs to be determined and then the position of the positioning hole 63 needs to be adjusted. During adjustment, the motor 67 can be started to control the rotation of the gear 69. The gear 69 can rotate clockwise to drive the rack 610 to control the slider 62 to contract, and the counterclockwise rotation can control the slider 62 to extend, so that the positioning hole 63 can be freely changed within the range of the limit groove 61. Then, the positioning hole 63 can be adjusted to the position of the upper mold hole 11, and the demolding screw can be inserted to realize the lifting cylinder 2 to rise and realize the demolding work;

[0089] A gear 69 can be used to control four racks 610 to drive four sliders 62 to synchronously change the range of the positioning hole 63. Therefore, this design can demold molds of different sizes to be tested, and can adaptively change and adjust the upper mold holes 11 of different ranges of sizes.

[0090] Third embodiment:

[0091] See also Figure 1 and Fig.10 , also includes a visual testing mechanism 7, the visual testing mechanism 7 includes a positioning frame 71 fixed on the top of the test bench 1, a rotating plate 72 is rotatably connected to the top of the positioning frame 71, a roller 73 is rotatably connected to the inside of the rotating plate 72, an industrial line scan camera 74 is rotatably connected to the inside of the rotating plate 72 and located below the roller 73, and a positioning bolt 75 is threadedly connected to the outer wall of the rotating plate 72.

[0092] The cross section of the rotating plate 72 is an “L”-shaped structure, and the front end of the positioning bolt 75 contacts the side wall of the industrial line scan camera 74 .

[0093] The positioning frame 71 , the rotating plate 72 , the roller 73 , the industrial line scan camera 74 and the positioning bolt 75 are distributed in a mirror image on the left side of the axis of the mounting plate 4 .

[0094] See also Figure 1 and Fig.10 During the working process of the second embodiment, after the installation disk 4 has completed the demolding of the upper template 10, it can continue to move upward. When the installation disk 4 is in the process of rising, the top surface of the installation disk 4 will eventually drive the trigger plate 68 to rise and resist the roller 73. When the roller 73 is subjected to the force from above, it will control the rotating plate 72 to flip along the top hinge of the positioning frame 71. During the flipping process, the industrial line scan camera 74 can be close to the lower mold 8, and the industrial line scan camera 74 can be aimed at the mold core 9 to realize visual inspection, so as to detect whether the upper mold 10 and the lower mold 8 will be affected by extrusion on the mold core 9 in the mold closing and parting state.

[0095] It can be understood that the axis of the positioning bolt 75 and the industrial line scan camera 74 is designed to be eccentric. In actual use, the positioning bolt 75 can be rotated to adjust the angle of the industrial line scan camera 74, and the roller 73 is in a rolling state, which can ensure that the trigger plate 68 can be more stably and smoothly subjected to the upward force.

[0096] This embodiment: During the working process of the second embodiment, after the lower mold 8 and the upper mold plate 10 are separated during the demolding process, the mold core 9 in the lower mold 8 will be completely exposed;

[0097] As the mounting plate 4 continues to rise, the control roller 73 can be linked to drive the rotating plate 72 to turn over on the positioning frame 71 toward the mold core 9. During the approaching process, the industrial line scan camera 74 will perform a visual test on the mold core 9, a linear scan, to test whether the surface of the mold core 9 is affected by extrusion when the lower mold 8 and the upper mold plate 10 are in the state of mold closing and mold separation;

[0098] Therefore, such a design can start the visual testing mechanism 7 to work in conjunction with the laser test of the first embodiment during the mold separation process, so that the device has a new testing method, thereby realizing the diversification of the test and can also work in a linked manner.

[0099] Please refer to Figures 1 to 10 The working principle of a mold inner hole detection device and detection method provided by the present invention is as follows:

[0100] Step S1: The hollow tube 52 is lowered into the hole 12 to be measured, and then the laser generator 53 is started. The laser generator 53 emits a vertically downward laser beam. When the laser beam enters the polarizer 59, the polarizer 59 with a 45-degree angle deflects the vertically downward laser beam by 90 degrees to generate a horizontal laser beam. Finally, the laser beam is projected onto the inner wall of the hole 12 to be measured.

[0101] During the test, the laser beam needs to be lowered from the top of the hole 12 to be tested to the bottom of the hole 12 to achieve aperture detection. During the test, the distance between the two laser generators 53 is fixed, that is, the value a. When the laser generator 53 on the left is turned and shot into the left inner wall of the hole 12 to be tested, when the laser generator 53 on the right is turned and shot into the right inner wall of the hole 12 to be tested, if an inner diameter deviation occurs during the descent process, when the value a remains unchanged, it will only affect the numerical deviation on the left and right sides, so accurate laser detection can be achieved.

[0102] Step S2: Before demolding, it is necessary to determine the position of the upper mold hole 11 of the mold and then adjust the position of the positioning hole 63. During adjustment, the motor 67 can be started to control the rotation of the gear 69. The gear 69 can rotate clockwise to drive the rack 610 to control the slider 62 to contract, and rotate counterclockwise to control the slider 62 to extend, so that the positioning hole 63 can be freely changed within the range of the limit groove 61. Then, the positioning hole 63 can be adjusted to the position of the upper mold hole 11, and the demolding screw can be inserted to realize the lifting cylinder 2 to rise and realize the demolding work.

[0103] Step S3: After the installation plate 4 has completed the demolding of the upper template 10, it can continue to move upward. When the installation plate 4 is in the process of rising, the top surface of the installation plate 4 will eventually drive the trigger plate 68 to rise and resist the roller 73. When the roller 73 is subjected to the force from above, it will control the rotating plate 72 to flip along the top hinge of the positioning frame 71. During the flipping process, the industrial line scan camera 74 can be close to the lower mold 8, and the industrial line scan camera 74 can be aimed at the mold core 9 to realize visual inspection, so as to detect whether the upper mold 10 and the lower mold 8 will be affected by extrusion on the mold core 9 in the mold closing and parting state.

[0104] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A mold inner hole detection device, characterized in that: It includes a test bench, a mounting plate, a laser test mechanism, an adjustable mechanism and a laser profile detection mechanism; A lower mold is arranged above the test bench, a mold core is installed inside the lower mold, an upper mold is slidably connected above the lower mold, a hole to be tested is opened in the middle of the upper mold, and upper mold holes are opened inside the upper mold and around the hole to be tested; A lifting cylinder is installed on one side of the test bench, and a lifting plate is installed on the top of the lifting cylinder; The laser testing mechanism comprises an electric turntable fixedly mounted on the axis of the bottom of the mounting plate, a hollow tube being mounted on the bottom end of the electric turntable, laser generators being mounted on both sides of the hollow tube, two avoidance grooves being provided inside the hollow tube and below the laser generator, mounting frames being fixedly mounted on the inner walls of the two avoidance grooves, flip frames being rotatably connected inside the two mounting frames, guide wheels being rotatably connected inside the two flip frames and located inside the hollow tube, polarizers being fixedly mounted inside the two flip frames and located directly below the two laser generators, a slide rod being slidably connected at the axis of the bottom end of the hollow tube, and a cone plate being fixedly mounted on the top end of the slide rod; The adjustable mechanism comprises four fixing rods fixedly mounted on the mounting plate, and a top plate is fixedly mounted on the top of the four fixing rods; The laser contour detection mechanism includes a fixed plate fixedly mounted on the inner wall of the hollow tube, a sliding rod is slidably connected to the axis of the fixed plate, a knob is threadedly connected to the outer wall of the fixed plate, an inner plate is fixedly mounted on the inner wall of the hollow tube and below the fixed plate, a linkage plate is fixedly mounted at the bottom end of the sliding rod, both sides of the linkage plate are rotatably connected to connecting plates, the outer walls of the two connecting plates are rotatably connected to beam expanders, and a reset spring is fixedly mounted at the bottom of the linkage plate; The outer wall of the hollow tube is provided with a groove to ensure that the beam expander can pass through, and is also provided with an operating groove to ensure that the sliding rod can be operated. The front end of the knob extends to the outer wall of the sliding rod, and the bottom end of the reset spring is fixedly connected to the inner plate.

2. The mold inner hole detection device according to claim 1, characterized in that: The outer walls of the two guide wheels are fitted with the outer wall of the cone plate. The cross section of the cone plate is a conical structure that is narrow at the top and wide at the bottom. The polarizer is a semi-transparent structure, and the beam expander is a fully transparent structure.

3. The mold inner hole detection device according to claim 1, characterized in that: The two polarizers are structured at a 45-degree angle to the horizontal plane, and the top of the mounting tube and the lifting plate are fixedly mounted.

4. The mold inner hole detection device according to claim 1, characterized in that: A motor is installed inside the mounting cylinder by bolts, and a gear is connected to the output shaft of the motor and the keyway below the top plate. A rack is meshed and connected to the outer wall of the gear, and there are four racks. Four limiting grooves are provided inside the mounting plate, and sliders are slidably connected inside the four limiting grooves. Positioning holes are provided inside the four sliders, and trigger plates are fixed on both horizontal sides of the mounting plate.

5. The mold inner hole detection device according to claim 4, characterized in that: The four racks are all threadedly connected to the side walls of the four sliders, and the cross-section of the slider is an "I"-shaped structure.

6. The mold inner hole detection device according to claim 4, characterized in that: The four racks are stacked in sequence from bottom to top, and the axis of the gear is rotatably connected to the axis of the mounting plate.

7. The mold inner hole detection device according to claim 1, characterized in that: It also includes a visual testing mechanism, which includes a positioning frame fixed on the top of the test bench, a rotating plate rotatably connected to the top of the positioning frame, a roller rotatably connected to the inside of the rotating plate, an industrial line scan camera rotatably connected to the inside of the rotating plate and below the roller, and a positioning bolt threadedly connected to the outer wall of the rotating plate.

8. The mold inner hole detection device according to claim 7, characterized in that: The cross section of the rotating plate is an "L"-shaped structure, and the front end of the positioning bolt contacts the side wall of the industrial line scan camera.

9. The mold inner hole detection device according to claim 7, characterized in that: The positioning frame, rotating plate, roller, industrial line scan camera and positioning bolt are mirror-distributed on the left side of the axis of the mounting plate.

10. A method for detecting inner holes of a mold, characterized in that: The mold inner hole detection method is used for the mold inner hole detection device according to any one of claims 1 to 9, comprising the following steps: Step S1: laser testing of the hole to be tested; The user can place the mold to be tested on the test bench after the film is combined. During the test, the lifting cylinder can be started to freely control the vertical up and down movement of the entire installation plate and the components above; Align the hole to be tested inside the upper template with the bottom position of the laser test mechanism (precision calibration does not require special adjustment and control, just ensure that the laser test mechanism enters the hole to be tested); Start the laser generator, which emits a vertically downward laser beam. When the laser beam enters the interior of the polarizer, the 45-degree polarizer deflects the vertically downward laser beam by 90 degrees, generating a horizontal laser beam, which finally enters the inner wall of the hole to be measured. During the test, the laser beam needs to be lowered from the top of the hole to be tested to the bottom of the hole to be tested to achieve aperture detection. During the test, the distance between the two laser generators is fixed, that is, the a value. When the laser generator on the left is turned and shot into the left inner wall of the hole to be tested, when the laser generator on the right is turned and shot into the right inner wall of the hole to be tested, if the inner diameter deviation occurs during the descent process, when the a value remains unchanged, it will only affect the numerical deviation on the left and right sides, so accurate laser detection can be achieved; Step S2: visual test; After the upper template is demolded, the installation plate can continue to rise. When the installation plate is rising, the top surface of the installation plate will eventually drive the trigger plate to rise and resist the roller. When the roller is subjected to force from above, it will control the rotating plate to flip along the top hinge of the positioning frame. During the flipping process, the industrial line scan camera can be close to the lower mold and can be aimed at the mold core to realize visual inspection, so as to detect whether the upper and lower molds will be affected by extrusion on the mold core in the mold closing and parting states.

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