A powder metallurgy mold profile detection instrument

Abstract

The present invention belongs to the field of mold detection technology, and in particular, relates to a powder metallurgy mold contour detection instrument, including a substrate, an upper insulation seat and a lower insulation seat, wherein the substrate is arranged between the lower insulation seat and the upper insulation seat, and the outer wall of the substrate is integrally formed with an insulation frame, and the insulation frame is detachably connected to the upper insulation seat and the lower insulation seat, and a controller is fixedly installed on the outer wall of the insulation frame, and the substrate and the upper insulation seat are used to install a movable mold. The present invention can not only judge whether there is a deviation in the contour of the movable mold and the static mold at one time, but also does not require step-by-step scanning, and the detection efficiency is high. Secondly, it is not easily affected by the dead angle of the mold cavity, and the detection is more accurate. At the same time, before performing contour detection, impurities such as powder that may remain in the mold cavity can be quickly discharged, thereby improving the accuracy of contour detection, and can remind personnel to increase the amount and uniformity of mold release agent applied later based on the powder concentration.

Description

Technical Field

[0001] The invention belongs to the technical field of mold detection, and in particular relates to a powder metallurgy mold profiler for detecting the mold. Background Art

[0002] In the field of powder metallurgy, mold quality is of vital importance. If there is a deviation in the mold contour, the product quality will be reduced and the performance will be damaged. At the same time, the mold will wear during use, affecting its contour. In order to ensure product quality, extend mold life, and optimize production processes, it is necessary to perform contour detection on powder metallurgy molds, which helps to detect problems in a timely manner and take measures.

[0003] At present, when performing contour detection of powder metallurgy molds, a laser scanner is usually used to scan and detect the contour of the mold. The detection accuracy of the laser scanner is high, such as a powder metallurgy mold contour instrument disclosed in patent announcement number CN213335997U;

[0004] Although the laser scanning method can accurately detect whether the mold contour meets the use requirements, the uneven position inside the mold cavity is too complex or there are deep holes, narrow slits and other structures, which may cause the laser light to be unable to fully illuminate all areas, resulting in light obstruction. The obscured part cannot obtain an effective laser reflection signal, and its contour information cannot be accurately measured, affecting the complete evaluation of the overall contour of the mold cavity. Secondly, the laser scanning needs to move along a certain path and gradually perform contour scanning, which is slow. In addition, a single powder metallurgy mold includes at least a dynamic mold and a static mold, and at least two scanning tests are required, resulting in a long overall detection time and low efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a powder metallurgy mold profiler for detecting the above-mentioned problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a powder metallurgy mold profiler, comprising a substrate, an upper insulation seat and a lower insulation seat, wherein the substrate is arranged between the lower insulation seat and the upper insulation seat, an outer wall of the substrate is integrally formed with an insulation frame, and the insulation frame is detachably connected to the upper insulation seat and the lower insulation seat, a controller is fixedly installed on the outer wall of the insulation frame, a movable mold is installed between the substrate and the upper insulation seat, and a static mold is installed between the substrate and the lower insulation seat, and further comprising:

[0007] A frame-shaped cavity is provided inside the substrate, an air supply unit connected to the frame-shaped cavity is installed on the substrate, the substrate and the movable mold are combined to form an upper mold cavity, and the substrate and the static mold are combined to form a lower mold cavity, and the air supply unit is used to supply air to the interior of the upper mold cavity and the lower mold cavity;

[0008] A frame-type electric heating plate is fixedly installed inside the frame-type cavity, the upper insulation seat and the lower insulation seat are both installed with a contour detection unit, and the frame-type electric heating plate is electrically connected to the controller;

[0009] A dust exhaust unit is installed inside the base plate, and the dust exhaust unit is connected with the interior of the upper mold cavity and the lower mold cavity;

[0010] The dust exhaust detection mechanism is installed on the side wall of the insulation frame, and the dust exhaust detection mechanism is connected to the air outlet of the dust exhaust unit. Two recording and warning components are installed on the inner wall of the insulation frame, and the dust exhaust detection mechanism is electrically connected to the recording and warning components through a controller.

[0011] Preferably, the air supply unit includes an air supply pump fixedly mounted on the outer wall of the heat insulation frame, and the air outlet end of the air supply pump is connected with the interior of the frame-shaped cavity, the upper and lower cavity walls of the frame-shaped cavity are provided with a plurality of air injection holes, and the upper mold cavity and the lower mold cavity are connected with the plurality of air injection holes on the same side, a normally closed solenoid valve is installed inside each of the air injection holes, the air supply pump and the normally closed solenoid valve are electrically connected to the controller, an air pressure detection component is installed inside the substrate, and the air pressure detection component is used to detect the air pressure inside the upper mold cavity and the lower mold cavity.

[0012] Preferably, the two contour detection units each include a plurality of temperature detection probes, and mounting grooves are provided at the opposing ends of the upper thermal insulation seat and the lower thermal insulation seat, and a mounting plate is installed inside the mounting groove. Each of the temperature detection probes is fixedly plugged into the end surface of the mounting plate, and the opposite ends of the static mold and the dynamic mold are in contact with the detection end of the temperature detection probe, and each of the temperature detection probes is electrically connected to the controller.

[0013] Preferably, the dust exhaust unit includes two exhaust cavities opened inside the base plate, and the upper cavity wall of the upper exhaust cavity is provided with an air outlet hole connected to the upper mold cavity, and the lower cavity wall of the lower exhaust cavity is fixedly connected with an air outlet pipe connected to the lower mold cavity, and the air outlet hole and the air outlet pipe are both installed with normally open solenoid valves, and the normally open solenoid valves are electrically connected to the controller, the cavity walls of the two exhaust cavities are fixedly connected with exhaust pipes, and the air outlet ends of the two exhaust pipes pass through the side walls of the insulation frame.

[0014] Preferably, the dust exhaust detection mechanism includes an exhaust hood fixedly mounted on the outer wall of the heat insulation frame, and the exhaust hood is connected to the two exhaust pipes, a sealing partition is installed inside the exhaust hood between the two exhaust pipes, and a light board is fixedly plugged into the side wall of the sealing partition, photoelectric detectors are fixedly mounted on the inner walls of the exhaust hood on both sides of the light board, and the airflow discharged from the two exhaust pipes passes between the photoelectric detector and the light board on the same side, the light board and the two photoelectric detectors are electrically connected to the controller, and exhaust holes are provided on the side walls of the exhaust hood on both sides of the sealing partition.

[0015] Preferably, the recording and warning component includes motors fixedly mounted on the upper and lower ends of the substrate, support plates are fixedly mounted on the inner walls of the thermal insulation frame at the upper and lower sides of the substrate, and encoders are fixedly plugged into the end faces of the two support plates, the output shafts of the two motors are transmission-connected to the shafts of the encoders, the two photoelectric detectors are electrically connected to the corresponding motors through the controller, and the encoder is electrically connected to the controller.

[0016] Preferably, the air pressure detection component includes two installation cavities opened inside the substrate, and air pressure detectors are fixedly installed inside the two installation cavities, wherein the detection end of one of the air pressure detectors is arranged inside the upper mold cavity, and the detection end of the other air pressure detector is arranged inside the lower mold cavity, and the two air pressure detectors are electrically connected to the controller.

[0017] Preferably, two L-shaped plates corresponding to the position of the motor are fixedly installed on the inner wall of the insulation frame, and the side walls of the two L-shaped plates are slidably inserted with sliding rods, one end of the sliding rod is fixedly installed with an impact block, and the side walls of the movable mold and the static mold are both against the side walls of the impact block on the same side, and the ends of the two sliding rods away from the impact block on the same side are fixedly installed with extrusion plates, and a spring is fixedly provided between the extrusion plate and the L-shaped plate on the same side, and a cam is installed at the output end of the motor, and the cam is arranged on one side of the extrusion plate.

[0018] Compared with the existing technology, the advantages of a powder metallurgy mold profiler are:

[0019] 1. Through the cooperation of the set base plate, the upper insulation seat, the lower insulation seat and the insulation frame, the dynamic mold and the static mold of the powder metallurgy mold can be installed, and through the cooperation of the set frame-type cavity and the air supply unit, it can be based on the gas volume inside the mold cavity of the static mold and the dynamic mold. Not only can it be judged at one time whether the contours of the dynamic mold and the static mold are deviated, but also there is no need for step-by-step scanning, the detection efficiency is high, and compared with light, there is no dead angle position for gas, and the detection is more accurate. Secondly, with the set frame-type electric heating plate and contour detection unit, the heated gas can be used to roughly locate the position of the mold contour deviation, and it is convenient for subsequent personnel to repair the mold.

[0020] 2. The dust removal unit can quickly remove impurities such as powder and release agent that may remain inside the mold cavity before contour detection, thereby reducing the error caused by powder, release agent, etc. on contour detection and improving the accuracy of contour detection.

[0021] 3. Through the recording and warning components set up, it can automatically remind personnel to increase the amount and uniformity of release agent applied when producing powder metallurgy products based on the concentration of impurities such as discharged powder, thereby helping to improve the production quality of powder metallurgy products and help reduce the damage rate of mold contours. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a powder metallurgy mold profiler provided by the present invention;

[0023] Figure 2 It is a schematic diagram of assembling a movable die, a static die, an upper heat-insulating seat, a lower heat-insulating seat and a base plate of a powder metallurgy die profiler provided by the present invention;

[0024] Figure 3 It is a schematic diagram of the connection structure of a movable die, a static die and a base plate of a powder metallurgy die profiler provided by the present invention;

[0025] Figure 4 It is a structural schematic diagram of a contour detection unit of a powder metallurgy mold contour instrument provided by the present invention;

[0026] Figure 5 It is a schematic diagram of the internal top view structure of an exhaust hood of a powder metallurgy mold profile detection instrument provided by the present invention;

[0027] Figure 6 The invention provides a powder metallurgy mold profiler. Figure 3 A magnified view of the structure of part A.

[0028] In the figure: 1 substrate, 2 upper insulation seat, 3 lower insulation seat, 4 insulation frame, 5 controller, 6 dynamic mold, 7 static mold, 8 frame cavity, 9 air supply unit, 91 air supply pump, 92 air injection hole, 93 normally closed solenoid valve, 10 upper mold cavity, 11 lower mold cavity, 12 frame type electric heating plate, 13 contour detection unit, 131 temperature detection probe, 132 mounting groove, 133 mounting plate, 14 dust exhaust unit, 141 exhaust cavity, 142 air outlet hole, 143 air outlet pipe , 144 normally open solenoid valve, 145 exhaust pipe, 15 dust exhaust detection mechanism, 151 exhaust hood, 152 sealing partition, 153 light board, 154 photoelectric detector, 155 exhaust hole, 16 recording warning component, 161 motor, 162 support plate, 163 encoder, 17 air pressure detection component, 171 installation cavity, 172 air pressure detector, 18 L-shaped plate, 19 sliding rod, 20 impact block, 21 extrusion plate, 22 spring, 23 cam. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] like Figure 1-Figure 6 As shown, a powder metallurgy mold profile detection instrument includes a substrate 1, an upper insulation seat 2 and a lower insulation seat 3, the substrate 1 is arranged between the lower insulation seat 3 and the upper insulation seat 2, the outer wall of the substrate 1 is integrally formed with an insulation frame 4, and the insulation frame 4 is detachably connected to the upper insulation seat 2 and the lower insulation seat 3, the outer wall of the insulation frame 4 is fixedly installed with a controller 5, the substrate 1 and the upper insulation seat 2 are used to install a movable mold 6, the substrate 1 and the lower insulation seat 3 are used to install a static mold 7, and also includes: a frame-shaped cavity 8, the frame-shaped cavity 8 is opened inside the substrate 1, the substrate 1 is equipped with an air supply unit 9 connected to the frame-shaped cavity 8, the substrate 1 and the movable mold 6 are enclosed to form an upper mold cavity 10, and the substrate 1 and the static mold 7 are enclosed Together, the lower mold cavity 11 is formed, and the air supply unit 9 is used to supply air to the interior of the upper mold cavity 10 and the lower mold cavity 11. The air supply unit 9 includes an air supply pump 91 fixedly installed on the outer wall of the insulation frame 4, and the air outlet end of the air supply pump 91 is connected to the interior of the frame-shaped cavity 8. The upper and lower cavity walls of the frame-shaped cavity 8 are each provided with a plurality of air injection holes 92, and the upper mold cavity 10 and the lower mold cavity 11 are both connected to the plurality of air injection holes 92 on the same side, and each air injection hole 92 is installed with a normally closed solenoid valve 93, and the air supply pump 91 and the normally closed solenoid valve 93 are both electrically connected to the controller 5, and an air pressure detection component 17 is installed inside the substrate 1, and the air pressure detection component 17 is used to detect the air pressure inside the upper mold cavity 10 and the lower mold cavity 11.

[0031] The air pressure detection component 17 includes two installation cavities 171 opened inside the substrate 1, and air pressure detectors 172 are fixedly installed inside the two installation cavities 171. The detection end of one air pressure detector 172 is set inside the upper mold cavity 10, and the detection end of the other air pressure detector 172 is set inside the lower mold cavity 11. The two air pressure detectors 172 are electrically connected to the controller 5. The air pressure detector 172 can detect the air pressure, and when the air pressure exceeds the threshold, the air pressure detector 172 will output an electrical signal to the controller 5.

[0032] The frame-type electric heating plate 12 is fixedly installed inside the frame-type cavity 8, the upper insulation seat 2 and the lower insulation seat 3 are both equipped with a contour detection unit 13, and the frame-type electric heating plate 12 is electrically connected to the controller 5. The two contour detection units 13 include multiple temperature detection probes 131. The upper insulation seat 2 and the lower insulation seat 3 are each provided with a mounting groove 132 at the opposite ends thereof, and a mounting plate 133 is installed inside the mounting groove 132. Each temperature detection probe 131 is fixedly plugged into the end surface of the mounting plate 133, and the opposite ends of the static mold 7 and the dynamic mold 6 are in contact with the detection end of the temperature detection probe 131. Each temperature detection probe 131 is electrically connected to the controller 5. The temperature detection probe 131 can detect the temperature and convert the temperature into an electrical signal to output to the controller 5.

[0033] The dust exhaust unit 14 is installed inside the substrate 1, and the dust exhaust unit 14 is connected with the interior of the upper mold cavity 10 and the lower mold cavity 11. The dust exhaust unit 14 includes two exhaust cavities 141 opened inside the substrate 1, and the upper cavity wall of the upper exhaust cavity 141 is provided with an air outlet hole 142 connected with the upper mold cavity 10, and the lower cavity wall of the lower exhaust cavity 141 is fixedly connected with an air outlet pipe 143 connected with the lower mold cavity 11, and the air outlet hole 142 and the air outlet pipe 143 are both installed with a normally open solenoid valve 144, and the normally open solenoid valve 144 is electrically connected to the controller 5, and the cavity walls of the two exhaust cavities 141 are fixedly connected with exhaust pipes 145, and the outlet ends of the two exhaust pipes 145 pass through the side wall of the insulation frame 4.

[0034] The dust exhaust detection mechanism 15 is installed on the side wall of the insulation frame 4, and the dust exhaust detection mechanism 15 is connected with the air outlet end of the dust exhaust unit 14. The dust exhaust detection mechanism 15 includes an exhaust hood 151 fixedly installed on the outer wall of the insulation frame 4, and the exhaust hood 151 is connected with two exhaust pipes 145. A sealing partition 152 is installed inside the exhaust hood 151 at a position between the two exhaust pipes 145, and a lamp board 153 is fixedly inserted on the side wall of the sealing partition 152. Photoelectric detectors 154 are fixedly installed on the inner walls of the exhaust hood 151 on both sides of the lamp board 153, and the airflow discharged from the two exhaust pipes 145 passes between the photoelectric detector 154 and the lamp board 153 on the same side. The lamp board 153 and the two photoelectric detectors 154 are electrically connected to the controller 5. Exhaust holes 155 are opened on the side walls of the exhaust hood 151 at positions on both sides of the sealing partition 152. The photoelectric detector 154 can detect light intensity and synchronously change its own resistance based on the light intensity.

[0035] Two recording and warning components 16 are installed on the inner wall of the insulation frame 4, and the dust removal detection mechanism 15 is electrically connected to the recording and warning components 16 through the controller 5. The recording and warning components 16 include motors 161 fixedly installed at the upper and lower ends of the substrate 1. The inner wall of the insulation frame 4 is located at the upper and lower sides of the substrate 1 and is fixedly installed with support plates 162, and the end faces of the two support plates 162 are fixedly plugged with encoders 163. The output shafts of the two motors 161 are transmission-connected to the shaft of the encoder 163. The two photoelectric detectors 154 are electrically connected to the corresponding motors 161 through the controller 5. The encoder 163 is electrically connected to the controller 5. When the shaft of the encoder 163 rotates with the output shaft of the motor 161, the grating inside it will rotate synchronously. At this time, the photosensitive element inside the encoder 163 will periodically receive the photoelectric signal, and convert the optical signal into an electrical signal and output it to the controller 5.

[0036] Two L-shaped plates 18 corresponding to the position of the motor 161 are fixedly installed on the inner wall of the insulation frame 4, and the side walls of the two L-shaped plates 18 are slidably inserted with sliding rods 19, one end of the sliding rod 19 is fixedly installed with an impact block 20, and the side walls of the movable mold 6 and the static mold 7 are both against the side walls of the impact block 20 on the same side, and the ends of the two sliding rods 19 away from the impact block 20 on the same side are fixedly installed with an extrusion plate 21, and a spring 22 is fixedly provided between the extrusion plate 21 and the L-shaped plate 18 on the same side, and a cam 23 is installed at the output end of the motor 161, and the cam 23 is arranged on one side of the extrusion plate 21. By utilizing the drive of the motor 161, the movable mold 6 and the static mold 7 are synchronously impacted, and the impact vibration can be used to assist the residual powder to separate from the movable mold 6 and the static mold 7.

[0037] The operating principle of the present invention is described as follows: The powder metallurgy mold to be tested is sequentially installed between the base plate 1 and the lower insulation seat 3 and the base plate 1 and the upper insulation seat 2 (refer to Figure 2 , in the figure, the dotted arrows are the installation directions of the various components and the mold), and then the upper insulation seat 2, the lower insulation seat 3 and the insulation frame 4 are locked and fixed by screws (wherein, the upper insulation seat 2 and the lower insulation seat 3 are both provided with sockets, and the insulation frame 4 is provided with a plug. After the upper insulation seat 2, the lower insulation seat 3 and the insulation frame 4 are assembled together, the controller 5 can maintain a conductive state with the connection circuits of the various temperature detection probes 131 through the sockets and the plugs), and then the controller 5 is connected to the external power supply circuit and the controller 5 is started;

[0038] After the controller 5 is started, it will immediately control the air supply pump 91 to start working, and control each normally closed solenoid valve 93 to be energized and opened. The air supply pump 91 will supply air to the interior of the frame-shaped cavity 8, and the airflow will enter the upper mold cavity 10 and the lower mold cavity 11 through each air injection hole 92 respectively, and the airflow inside the upper mold cavity 10 will enter the exhaust cavity 141 on the same side through the air outlet hole 142, and the airflow inside the lower mold cavity 11 will enter the exhaust cavity 141 on the same side through the exhaust pipe 145. Finally, the airflow passes through the two exhaust pipes 145 and enters the exhaust hood 151, and is finally discharged through the tail gas hole 155. When the airflow passes through the upper mold cavity 10 and the lower mold cavity 11, Under the high-speed flow of the airflow, impurities such as powder, mold release agent, dust, etc. remaining inside the movable mold 6 and the static mold 7 will be discharged along with the airflow, so as to avoid the residual powder, mold release agent, etc. inside the movable mold 6 and the static mold 7 from affecting the accuracy of the subsequent contour judgment. When the controller 5 initially controls the air supply pump 91 to work, it will synchronously control the frame-type electric heating plate 12 to work (the initial heating temperature of the frame-type electric heating plate 12 is 70°C), so as to preheat the movable mold 6 and the static mold 7, so that the movable mold 6 and the static mold 7 maintain a uniform temperature, and the heated hot air can assist in removing the water and oil stains that may remain inside the mold cavity of the movable mold 6 and the static mold 7;

[0039] After the controller 5 controls the air supply pump 91 to work for 3 minutes, the controller 5 controls the normally closed solenoid valve 93 inside the upper air injection hole 92 to be powered off and closed, and controls the normally open solenoid valve 144 inside the air outlet pipe 143 to be powered on and closed. At this time, the gas delivered by the air supply pump 91 can only enter the lower mold cavity 11 through the lower air injection hole 92, and the gas inside the lower mold cavity 11 cannot be discharged through the air outlet pipe 143. At this time, the air pressure inside the lower mold cavity 11 increases, and after the normally closed solenoid valve 93 on the upper side is powered off and closed for 10 seconds, the controller 5 controls the normally closed solenoid valve 93 on the lower side to be powered off and closed, and at the same time controls the normally open solenoid valve 144 on the upper side to be powered off and closed. The normally closed solenoid valve 93 is powered on and opened, and the normally open solenoid valve 144 inside the air outlet hole 142 is powered on and closed. At this time, the air flow delivered by the air supply pump 91 will enter the upper mold cavity 10 through the upper air injection hole 92, and the air flow inside the upper mold cavity 10 cannot be discharged. After the upper air injection hole 92 also works for 10 seconds, the controller 5 controls the normally closed solenoid valve 93 on the upper side to cut off the power, and at the same time controls the air supply pump 91 to stop working. Since a certain amount of air is injected into the upper mold cavity 10 and the lower mold cavity 11, the air pressure inside the upper mold cavity 10 and the lower mold cavity 11 will increase, and the two air pressure detectors 1 72 can detect the air pressure inside the upper mold cavity 10 and the lower mold cavity 11. When the contours of the movable mold 6 and the static mold 7 show wear deviation, the contours of the movable mold 6 and the static mold 7 become relatively larger because the inner walls of the mold cavities of the movable mold 6 and the static mold 7 are worn. At this time, the accommodation space inside the upper mold cavity 10 and the lower mold cavity 11 increases. Therefore, compared with the unworn upper mold cavity 10 and the lower mold cavity 11, the air pressure detector 172 will detect that the air pressure inside the upper mold cavity 10 and the lower mold cavity 11 has dropped. At this time, since the air pressure detector 172 detects that the air pressure has not reached the set value, the air pressure detector 172 will output a telecommunication signal to the controller 5. The controller 5 will give an alarm through its own alarm module (such as a buzzer), and when there is no wear deviation in the contours of the movable mold 6 and the static mold 7, or the wear deviation is small (the impact on the molding quality of the powder metallurgy product is small and within the error range of the product), at this time, the air pressure detector 172 can detect that the air pressure inside the upper mold cavity 10 and the lower mold cavity 11 reaches the set value. At this time, the air pressure detector 172 will not output an electrical signal to the controller 5. At this time, it means that the contour of the mold is qualified and no subsequent detection work is required, which saves a lot of time and improves detection efficiency;

[0040] When the controller 5 receives the electrical signal output by the air pressure detector 172, the controller 5 will control the two normally open solenoid valves 144 to be powered off and opened. At this time, the excess air inside the upper mold cavity 10 and the lower mold cavity 11 is discharged. Subsequently, the controller 5 will control the frame-type electric heating plate 12 and the two normally closed solenoid valves 93 to be powered on (at this time, the operating temperature of the frame-type electric heating plate 12 is 120°C). At the same time, the controller 5 controls the air supply pump 91 to resume working. When the frame-type electric heating plate 12 is working, it can quickly heat the air delivered to the frame-type cavity 8 by the air supply pump 91, and deliver the heated air to the upper mold cavity 10 and the lower mold cavity. 11, and finally, the heated air will be discharged through the air outlet 142, the air outlet pipe 143, the exhaust pipe 145, the exhaust hood 151 and the tail air hole 155, and the heated air will exchange heat with the movable mold 6 and the static mold 7 when passing through the interior of the upper mold cavity 10 and the lower mold cavity 11, thereby heating the movable mold 6 and the static mold 7. After the frame-type electric heating plate 12 works for 2 minutes, the controller 5 connects the connection circuits of each temperature detection probe 131, and the temperature detection probe 131 can convert the temperature of each position into an electrical signal and output it to the controller 5, and the controller 5 converts the electrical signal output by each temperature detection probe 131 into an electrical signal. The signal is compared with the electrical signal corresponding to the preset temperature, and two mold cavity graphics matching the movable mold 6 and the static mold 7 are displayed on the display screen of the controller 5, and color markings are performed at the points corresponding to each temperature detection probe 131 (for example, green dots are used to mark the points in the graphics). When the electrical signal strength output by the temperature detection probe 131 is greater than the preset electrical signal strength (due to the wear of the mold contour, the path from this position to the corresponding temperature detection probe 131 becomes shorter, and the contact area with the hot air becomes larger. At this time, the heat transfer speed becomes faster, so within 2 minutes of the operation of the frame-type electric heating plate 12, the position The temperature detection probe 131 of the mold is heated faster, so the temperature detected by the temperature detection probe 131 is higher than the preset temperature), the controller 5 controls the color of the color mark of the corresponding point on the graph to change (for example, from a green point to a red point), and the staff can determine the position where the mold contour has a wear deviation by checking the point where the color changes, so as to facilitate the subsequent repair work (wherein, the preset electrical signal strength of each point of the mold can be set according to the electrical signal strength output by the temperature detection probe 131 under the same conditions when the initial contour of the mold has not been worn);

[0041] When initially removing impurities such as powder that may remain inside the upper mold cavity 10 and the lower mold cavity 11, the controller 5 starts the light board 153 and connects the two photodetectors 154 to the corresponding drive circuits of the motor 161. The light board 153 can emit light and project the light to the two photodetectors 154, and the two photodetectors 154 can output electrical signals of different intensities according to the light intensity, so that the motor 161 works at different powers. When powder metallurgy products are manufactured, the inner wall of the mold cavity of the movable mold 6 and the static mold 7 is coated with If the release agent is not applied enough or is not applied evenly, some powder may remain inside the mold cavities of the movable mold 6 and the static mold 7. At this time, as the concentration of the powder discharged by the airflow increases, the powder will partially block the light irradiated to the photodetector 154 when passing through the light board 153. Therefore, the higher the powder concentration, the lower the light intensity irradiated to the photodetector 154. At this time, the resistance of the photodetector 154 increases, so the current intensity passing into the motor 161 becomes lower. At this time, the speed of the output shaft of the motor 161 slows down. Conversely, the motor 161 The speed of the output shaft becomes faster, and when the output shaft of the motor 161 rotates, the encoder 163 can output an electrical signal to the controller 5 based on the number of rotations of the output shaft of the motor 161 (when the output shaft of the motor 161 rotates, it can drive the shaft of the encoder 163 to rotate synchronously, and the shaft of the encoder 163 can drive the grating to rotate. After each rotation of the grating, the photosensitive element inside it will receive a light signal, and the photosensitive element will convert the light signal into an electrical signal and output it to the controller 5). Through the counting module of the controller 5, the output shaft of the motor 161 can be counted. The number of rotations of the motor 161 is measured in real time, and the measurement results are displayed on its own display screen. The staff can judge the amount of powder remaining inside the movable mold 6 and the static mold 7 by checking the number of rotations of the output shafts of the two motors 161. When the amount of residual powder is large (that is, the number of rotations of the output shaft of the motor 161 is small), the staff can pay attention to the amount of the release agent applied and the uniformity of the release agent when applying the release agent to the mold later. After the air supply pump 91 initially works for 3 minutes, the controller 5 controls the light board 153 and the motor 161 to stop working;

[0042] At the same time, when the motor 161 is working, the output shaft of the motor 161 will drive the cam 23 to rotate. When the cam 23 rotates away from the end of the output shaft of the motor 161 to the position of the extrusion plate 21, the cam 23 will push the extrusion plate 21 to move, and the extrusion plate 21 can pull the slide bar 19, so that the spring 22 is stretched. When the cam 23 is separated from the extrusion plate 21, under the rebound action of the spring 22, the extrusion plate 21 will drive the impact block 20 to rebound quickly through the slide bar 19, so that the impact block 20 can hit the side wall of the movable mold 6 or the static mold 7. By hitting the movable mold 6 and the static mold 7, the movable mold 6 and the static mold 7 can generate a vibration force, which can assist the residual powder to fall off the movable mold 6 and the static mold 7, and then assist the airflow to remove the powder that may remain on the inner wall of the mold cavity of the movable mold 6 and the static mold 7 more fully, thereby indirectly improving the accuracy of mold contour detection.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder metallurgy mold profile detection instrument, comprising a base plate (1), an upper thermal insulation seat (2) and a lower thermal insulation seat (3), wherein the base plate (1) is arranged between the lower thermal insulation seat (3) and the upper thermal insulation seat (2), an outer wall of the base plate (1) is integrally formed with an insulation frame (4), and the insulation frame (4) is detachably connected to the upper thermal insulation seat (2) and the lower thermal insulation seat (3), a controller (5) is fixedly installed on the outer wall of the insulation frame (4), a movable mold (6) is installed between the base plate (1) and the upper thermal insulation seat (2), and a static mold (7) is installed between the base plate (1) and the lower thermal insulation seat (3), characterized in that: Also includes: A frame-shaped cavity (8) is provided inside the substrate (1); the substrate (1) is provided with an air supply unit (9) which is in communication with the frame-shaped cavity (8); the substrate (1) and the movable mold (6) are combined to form an upper mold cavity (10); and the substrate (1) and the static mold (7) are combined to form a lower mold cavity (11); the air supply unit (9) is used to supply air to the interior of the upper mold cavity (10) and the lower mold cavity (11); A frame-shaped electric heating plate (12) is fixedly mounted inside the frame-shaped cavity (8), the upper heat insulation seat (2) and the lower heat insulation seat (3) are both equipped with a contour detection unit (13), and the frame-shaped electric heating plate (12) is electrically connected to the controller (5); A dust exhaust unit (14) is installed inside the base plate (1), and the dust exhaust unit (14) is connected to the interior of the upper mold cavity (10) and the lower mold cavity (11); A dust exhaust detection mechanism (15) is installed on a side wall of the heat insulation frame (4), and the dust exhaust detection mechanism (15) is connected to an air outlet of the dust exhaust unit (14); two recording and warning components (16) are installed on the inner wall of the heat insulation frame (4), and the dust exhaust detection mechanism (15) is electrically connected to the recording and warning components (16) via a controller (5); The air supply unit (9) comprises an air supply pump (91) fixedly mounted on the outer wall of the heat insulation frame (4), and the air outlet end of the air supply pump (91) is connected to the interior of the frame-shaped cavity (8), the upper and lower cavity walls of the frame-shaped cavity (8) are both provided with a plurality of air injection holes (92), and the upper mold cavity (10) and the lower mold cavity (11) are both connected to the plurality of air injection holes (92) on the same side, and each of the air injection holes (92) is provided with a normally closed solenoid valve (93), and the air supply pump (91) and the normally closed solenoid valve (93) are both electrically connected to the controller (5), and an air pressure detection component (17) is installed inside the substrate (1), and the air pressure detection component (17) is used to detect the air pressure inside the upper mold cavity (10) and the lower mold cavity (11); The two contour detection units (13) each include a plurality of temperature detection probes (131); a mounting groove (132) is provided at the opposite ends of the upper heat insulation seat (2) and the lower heat insulation seat (3); a mounting plate (133) is installed inside the mounting groove (132); each of the temperature detection probes (131) is fixedly plugged into an end surface of the mounting plate (133); opposite ends of the static mold (7) and the dynamic mold (6) are in contact with a detection end of the temperature detection probe (131); and each of the temperature detection probes (131) is electrically connected to the controller (5).

2. The powder metallurgy mold profiler according to claim 1, characterized in that: The dust exhaust unit (14) comprises two exhaust cavities (141) opened inside the base plate (1), and the upper cavity wall of the upper exhaust cavity (141) is provided with an exhaust hole (142) connected to the upper mold cavity (10), and the lower cavity wall of the lower exhaust cavity (141) is fixedly connected with an exhaust pipe (143) connected to the lower mold cavity (11), and the interiors of the exhaust hole (142) and the exhaust pipe (143) are both installed with a normally open solenoid valve (144), and the normally open solenoid valve (144) is electrically connected to the controller (5), and the cavity walls of the two exhaust cavities (141) are both fixedly connected with an exhaust pipe (145), and the exhaust ends of the two exhaust pipes (145) pass through the side wall of the heat insulation frame (4).

3. The powder metallurgy mold profiler according to claim 2, characterized in that: The dust exhaust detection mechanism (15) comprises an exhaust hood (151) fixedly mounted on the outer wall of the heat insulation frame (4), and the exhaust hood (151) is connected to the two exhaust pipes (145); a sealing baffle (152) is installed inside the exhaust hood (151) at a position between the two exhaust pipes (145), and a light board (153) is fixedly plugged into the side wall of the sealing baffle (152); photoelectric detectors (154) are fixedly mounted on the inner walls of the exhaust hood (151) on both sides of the light board (153), and the airflow discharged from the two exhaust pipes (145) passes between the photoelectric detector (154) and the light board (153) on the same side; the light board (153) and the two photoelectric detectors (154) are electrically connected to the controller (5); and exhaust holes (155) are opened on the side walls of the exhaust hood (151) at positions on both sides of the sealing baffle (152).

4. The powder metallurgy mold profiler according to claim 3, characterized in that: The recording and warning component (16) comprises a motor (161) fixedly mounted on the upper and lower ends of the base plate (1); support plates (162) are fixedly mounted on the inner wall of the heat insulation frame (4) at positions on the upper and lower sides of the base plate (1); and encoders (163) are fixedly plugged into the end surfaces of the two support plates (162); the output shafts of the two motors (161) are drivingly connected to the shaft of the encoder (163); the two photoelectric detectors (154) are electrically connected to the corresponding motors (161) through the controller (5); and the encoder (163) is electrically connected to the controller (5).

5. The powder metallurgy mold profiler according to claim 2, characterized in that: The air pressure detection component (17) comprises two installation cavities (171) opened inside the base plate (1), and air pressure detectors (172) are fixedly installed inside the two installation cavities (171), wherein the detection end of one of the air pressure detectors (172) is arranged inside the upper mold cavity (10), and the detection end of the other air pressure detector (172) is arranged inside the lower mold cavity (11), and the two air pressure detectors (172) are electrically connected to the controller (5).

6. The powder metallurgy mold profiler according to claim 4, characterized in that: Two L-shaped plates (18) corresponding to the position of the motor (161) are fixedly mounted on the inner wall of the heat insulation frame (4), and the side walls of the two L-shaped plates (18) are slidably connected with sliding rods (19), one end of the sliding rod (19) is fixedly mounted with an impact block (20), and the side walls of the movable mold (6) and the static mold (7) are both against the side walls of the impact block (20) on the same side, and the ends of the two sliding rods (19) away from the impact block (20) on the same side are fixedly mounted with an extrusion plate (21), and a spring (22) is fixedly arranged between the extrusion plate (21) and the L-shaped plate (18) on the same side, and the output end of the motor (161) is mounted with a cam (23), and the cam (23) is arranged on one side of the extrusion plate (21).

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