Mold inner hole detection device and detection method

Abstract

The present invention provides a mold inner hole detection device and detection method. It relates to the field of mold detection technology and includes a test bench, a mounting plate, a laser testing mechanism, an adjustable mechanism, and a laser contour detection mechanism; a lower mold is mounted 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 measured 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 measured. This device can accurately detect the difference in inner diameter between the top and bottom positions of the hole to be measured in all directions. Secondly, when the laser testing mechanism moves to the bottom end, it changes the angle of the polarizer, thereby moving 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 measured do not need to be concentrically aligned during the calibration process, and it is only necessary to ensure that the hollow tube enters the hole to be measured.

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, and 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 mold's inner hole needs to be inspected.

[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, and the moving connecting rod drives the laser ranging sensor to be inserted 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 inspecting existing molds on the market, only the aperture deviation can be detected. If the axis of the hole to be tested deviates, it is inconvenient to conduct multi-faceted inspections. The inspection method is single. If the roughness requirements of the inner hole of the mold are very high, if the traditional inspection method is used, the accuracy deviation of the inspection will be large.

[0005] Therefore, it is necessary to provide a mold inner hole detection device and 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 traditional testing methods in related technologies.

[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 mounted 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 includes an electric turntable fixed on the axis of the bottom of the mounting plate, a hollow tube installed at the bottom end of the electric turntable, laser generators installed on both sides of the hollow tube, two avoidance grooves are provided inside the hollow tube and below the laser generator, the inner walls of the two avoidance grooves are fixed with mounting frames, the interiors of the two mounting frames are rotatably connected to flip frames, the interiors of the two flip frames and located inside the hollow tube are rotatably connected to guide wheels, polarizers are fixed inside the two flip frames and located directly below the two laser generators, a slide rod is slidably connected to the axis of the bottom end of the hollow tube, and a cone plate is fixed to the top of the slide rod;

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

[0012] The laser contour detection mechanism includes a fixed plate fixed to 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 fixed to the inner wall of the hollow tube and located below the fixed plate, a linkage plate is fixed to 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 fixed to 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 fit into 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 arranged 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 meshed with a rack, and there are four racks, four limiting grooves are provided inside the mounting plate, 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.

[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 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.

[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 after the film is combined on the test bench. During the test, the lifting cylinder can be activated to freely control the vertical up and down movement of the entire mounting plate and the components above.

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

[0026] Start the laser generator, which emits a vertically downward laser beam. When the laser beam enters the polarizer, the 45-degree polarizer deflects the vertically downward laser beam by 90 degrees, generating a horizontal laser beam. Finally, the laser beam is projected onto 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 measured to the bottom of the hole to be measured in order to achieve aperture detection. During the test, the distance between the two laser generators is fixed, that is, the a value. When the left laser generator is turned and shot into the left inner wall of the hole to be measured, when the right laser generator is turned and shot into the right inner wall of the hole to be measured, if the inner diameter deviation occurs during the descent process, under the condition that the a value remains unchanged, only the numerical deviation on the left and right sides will be affected, so accurate laser detection can be achieved;

[0028] Step S: visual test;

[0029] After the upper template is demolded, the mounting plate can continue to rise. When the mounting plate is rising, the top surface of the mounting plate will eventually drive the trigger plate to rise and resist the roller. When the roller is subjected to the 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 brought close to the lower mold and aimed at the mold core to realize visual inspection. It can be detected whether the mold core of the upper and lower molds is affected by extrusion in the mold closing and parting states.

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

[0031] Compared with traditional detection methods, 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 on both sides of the hole to be tested. Then, during the test, it descends from top to bottom. 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 bottom positions of the hole to be tested in an all-round way. Secondly, when the laser testing mechanism moves to the bottom, it changes the angle of the polarizer, thereby moving the angle of the laser beam downward, so that the verticality of the axis can be tested, 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 lifting and lowering of the two beam expanders to switch from the contracted state to the extended state, so that the two laser beams can be expanded to form four laser points. The beam expander can form two paths 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 surface finish 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

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

[0035] Figure 2 for Figure 1 Schematic diagram of the split structure of the lower mold and the upper mold shown;

[0036] Figure 3 for Figure 1 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 laser contour detection mechanism shown;

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

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

[0043] Figure 10 for Figure 1 The schematic diagram of the visual testing mechanism 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. Limiting 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. Turntable, 73. Roller, 74. Industrial line scan camera, 75. Positioning bolt;

[0051] 8. Lower mold, 9. 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 clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall 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 table 1. During the test, the lifting cylinder 2 can be started to freely control the vertical up and down movement of the entire mounting plate 4 and the components above it.

[0061] The laser testing mechanism 5 includes an electric turntable 51 fixed on the axis of the bottom of the mounting plate 4, a hollow tube 52 is installed at the bottom end of the electric turntable 51, and laser generators 53 are installed 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. The inner walls of the two avoidance grooves 510 are fixed with mounting brackets 56, and the interiors of the two mounting brackets 56 are rotatably connected to flip racks 57. The interiors of the two flip racks 57 and the interiors of the hollow tube 52 are rotatably connected to guide wheels 58. Polarizers 59 are fixed inside the two flip racks 57 and directly below the two laser generators 53. A slide rod 54 is slidably connected to the axis of the bottom end of the hollow tube 52, and a cone plate 55 is fixed to the top of the slide rod 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 is controlled to descend into the hole 12 to be tested, and then the laser generator 53 is activated. The laser generator 53 emits a vertically downward laser beam. When the laser beam enters the polarizer 59, the 45-degree polarizer 59 deflects the vertically downward laser beam by 90 degrees, generating a horizontal laser beam. 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 measured 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 left laser generator 53 is turned and shot at the left inner wall of the hole 12 to be measured, when the right laser generator 53 is turned and shot at the right inner wall of the hole 12 to be measured, if the inner diameter deviation occurs during the descent process, under the condition that the a value remains unchanged, only the numerical deviation on the left and right sides will be affected, thereby achieving accurate laser detection;

[0066] See also Figure 9 : When the laser testing mechanism 5 moves to the bottom of the hole to be tested 12, it is blocked by the bottom, and the slide bar 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 to be tested 12. During the sliding downward process, it can detect the verticality of the axis while also performing a through-type test.

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

[0068] The two polarizers 59 are arranged at a 45-degree angle to 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 can be made of hard rubber material.

[0070] It can be understood that the two avoidance grooves 510 are set downwards, 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 profile detection mechanism 13 includes a fixed plate 131 fixed to 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 fixed to the inner wall of the hollow tube 52 and located below the fixed plate 131, a linkage plate 135 is fixed to 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 return spring 138 is fixed to 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 : During the inner diameter deviation detection, the two beam expanders 137 are in the retracted state, and the lasers emitted downward by the two laser generators 53 do not pass through the beam expanders 137;

[0074] If the user needs to detect the inner wall contour of the hole 12 to be measured, 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, it can control the connecting plates 136 on both sides to extend each other. 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 to be measured 12. 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 to be measured 12.

[0076] It should be noted that the polarizer 59 is of semi-transparent structure and the beam expander 137 is of fully transparent structure, which ensures that the laser beam can pass through the polarizer 59 after passing through the beam expander 137, while 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., and 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, this design can accurately detect the inner diameter difference between the top and bottom positions of the hole 12 to be tested in all directions. Secondly, when the laser testing mechanism 5 moves to the bottom end, it will change the angle of the polarizer 59, thereby moving the angle of the laser beam downward, so that the verticality of the axis can be tested, and through-type detection can also be achieved. Secondly, the hollow tube 52 and the hole to be tested 12 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 to be tested 12.

[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, 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 all-round line scanning imaging detection, which can be used for more accurate surface finish accuracy detection.

[0080] Second embodiment:

[0081] See also Figures 2 to 6 A motor 67 is installed inside the mounting cylinder 66 by bolts. 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 there are four racks 610. Four limiting grooves 61 are provided inside the mounting plate 4. Slide blocks 62 are slidably connected to the inside of the four limiting grooves 61. Positioning holes 63 are provided inside the four slide blocks 62. Trigger plates 68 are fixed on both horizontal sides of the mounting plate 4.

[0082] See also Figure 2 : The interior of the upper template 10 is provided with four upper die holes 11, which 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 slot 61, thereby changing the range size 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 slots 61, which can ensure 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 toothed 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 with by the fixed rods 64.

[0088] This embodiment: After the internal laser test of the hole to be tested 12 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, 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 rotates clockwise to drive the rack 610 to control the slider 62 to retract, and rotates 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 of the lifting cylinder 2 to realize the demolding work;

[0089] A gear 69 can be used to control the four racks 610 to drive the 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 sizes.

[0090] Third embodiment:

[0091] See also Figure 1 and Figure 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, the upper part of the positioning frame 71 is rotatably connected to a rotating plate 72, the interior of the rotating plate 72 is rotatably connected to a roller 73, the interior of the rotating plate 72 and below the roller 73 is rotatably connected to an industrial line scan camera 74, and the outer wall of the rotating plate 72 is threadedly connected to a positioning bolt 75.

[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 mirror-distributed on the left side of the axis of the mounting plate 4 .

[0094] See also Figure 1 and Figure 10 : During the working process of the second embodiment, the mounting plate 4 can continue to move upward after the upper template 10 is demolded. When the mounting plate 4 is in the process of rising, the top surface of the mounting plate 4 will eventually drive the trigger plate 68 to rise and force against the roller 73. When the roller 73 is subjected to 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 aligned with the mold core 9 to realize visual inspection, from which it can be detected whether the upper template 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 eccentrically designed. During 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 demoulding 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 on the positioning frame 71 to turn toward the mold core 9. During the approach, the industrial line scan camera 74 will perform a visual test on the mold core 9, linear scanning, to test whether the surface of the mold core 9 is affected by squeezing when the lower mold 8 and the upper mold plate 10 are closed and separated.

[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 coordinated manner.

[0099] Please refer to Figures 1 to 10 The working principle of the 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 activated. The laser generator 53 emits a vertically downward laser beam. When the laser beam enters the interior of the polarizer 59, the 45-degree polarizer 59 deflects the vertically downward laser beam by 90 degrees, generating a horizontal laser beam. The laser beam finally strikes 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 to be measured 12 all the way to the bottom of the hole to be measured 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 to be measured 12, when the laser generator 53 on the right is turned and shot into the right inner wall of the hole to be measured 12, if an 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 that 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 clockwise rotation of the gear 69 can 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 of the lifting cylinder 2 to 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 force it to 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, from which it can be detected whether the upper template 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 transformations made by using the contents of the present invention description and drawings under the concept of the present invention, or direct / indirect application 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 testing mechanism, an adjustable mechanism and a laser profile detection mechanism; A lower mold is mounted 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 includes an electric turntable fixed on the axis of the bottom of the mounting plate, a hollow tube installed at the bottom end of the electric turntable, laser generators installed on both sides of the hollow tube, two avoidance grooves are provided inside the hollow tube and below the laser generator, the inner walls of the two avoidance grooves are fixed with mounting frames, the interiors of the two mounting frames are rotatably connected to flip frames, the interiors of the two flip frames and located inside the hollow tube are rotatably connected to guide wheels, polarizers are fixed inside the two flip frames and located directly below the two laser generators, a slide rod is slidably connected to the axis of the bottom end of the hollow tube, and a cone plate is fixed to the top of the slide rod; The adjustable mechanism includes four fixing rods fixed on the mounting plate, a top plate fixed on the top of the four fixing rods, and a mounting cylinder fixed on the top of the top plate; A motor is mounted inside the mounting cylinder via bolts. A gear is connected to the output shaft of the motor through a keyway located below the top plate. A rack is meshed with 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 to the insides of the four limiting grooves. Positioning holes are provided inside the four sliders. Trigger plates are fixed on both horizontal sides of the mounting plate. The device further comprises a visual testing mechanism, the visual testing mechanism comprising a positioning frame fixedly mounted 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; The laser contour detection mechanism includes a fixed plate fixed to 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 fixed to the inner wall of the hollow tube and located below the fixed plate, a linkage plate is fixed to 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 fixed to 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 fit into 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: 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.

5. The mold inner hole detection device according to claim 1, 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.

6. The mold inner hole detection device according to claim 1, 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.

7. The mold inner hole detection device according to claim 1, 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.

8. 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 7, comprising the following steps: Step S1: laser testing of the hole to be tested; The user places the mold to be tested on the test bench after the film is combined. During the test, the lifting cylinder is activated to freely control the vertical up and down movement of the entire mounting plate and the components above. Align the hole to be tested inside the upper template with the bottom position of the laser testing mechanism; Start the laser generator, which emits a vertically downward laser beam. When the laser beam enters the polarizer, the 45-degree polarizer deflects the vertically downward laser beam by 90 degrees, generating a horizontal laser beam. Finally, the laser beam is projected onto 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 measured to the bottom of the hole to be measured to achieve aperture detection. During the test, the distance between the two laser generators is fixed, that is, the a value. When the left laser generator is turned and shot into the left inner wall of the hole to be measured, when the right laser generator is turned and shot into the right inner wall of the hole to be measured, if the inner diameter deviation occurs during the descent process, under the condition that the a value remains unchanged, only the numerical deviation on the left and right sides will be affected, thus achieving accurate laser detection; Step S2: visual test; After the upper template is demolded, the mounting plate continues to rise. During the rising process, the top surface of the mounting plate will eventually drive the trigger plate to rise and resist the roller. When the roller is subjected to the 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 is brought close to the lower mold and aimed at the mold core to realize visual inspection to detect whether the upper and lower molds are affected by extrusion on the mold core in the mold closing and parting states.

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