Device and method for detecting quality of cutting surface of evanescent mode

Abstract

The invention relates to an evanescent mode cutting surface quality detection device and a detection method thereof, and relates to the technical field of evanescent mode surface detection.The evanescent mode cutting surface quality detection device comprises a rack, a workbench arranged on the rack and a mounting rod arranged on the rack in a lifting and sliding mode, the workbench is provided with a fixing assembly used for clamping and fixing a die, the mounting rod is further provided with a rolling friction detection assembly and a sliding friction detection assembly which are used for detecting the surface quality of the surface of the die, and the rolling friction detection assembly and the sliding friction detection assembly correspond to the surface of the die in a selected mode. The mounting rod is further provided with a switching piece used for switching the rolling friction detection assembly and the sliding friction detection assembly. The device has the effects that the surface quality of the evanescent mode can be conveniently detected, and meanwhile, the influence on the surface quality of the evanescent mode mold is reduced.

Description

Technical Field

[0001] This application relates to the technical field of surface detection of lost foam patterns, and particularly to a detection device and a detection method for the surface quality of a cut lost foam pattern. Background Art

[0002] Lost foam casting refers to a new casting method in which paraffin or foam patterns similar in size and shape to the casting are bonded and combined into a pattern cluster. After being brushed with refractory coating and dried, they are buried in dry quartz sand for vibration molding and cast under negative pressure, causing the patterns to vaporize and the liquid metal to occupy the positions of the patterns, and then solidifying and cooling to form the casting. Since lost foam casting does not require pattern removal, has no parting surface, and no cores, the castings have no flash, burrs, and draft angles.

[0003] Since the molds of lost foam patterns are usually made of high polystyrene, which is a polymer material relatively softer than metal materials, and since the surface quality of the lost foam mold directly affects the surface quality of the subsequent cast products, if there are pores, cracks, or poor surface roughness on the surface of the lost foam pattern, the surface of the casting will also become rough, and additional grinding and processing are required to meet the quality requirements.

[0004] Relatively speaking, it is more convenient to treat the surface of the lost foam pattern than to grind the surface of the casting. Therefore, after the lost foam pattern is cut, it is necessary to detect the surface quality of the lost foam pattern.

[0005] Conventional equipment for detecting the surface quality of lost foam patterns is a roughness detector or a profile detector. Their detection principle is to press a probe against the surface of the object to be detected and slide a certain distance, and detect the surface quality according to the change of the probe torque, so as to judge the surface finish and flatness of the lost foam mold. However, due to the relatively soft high polystyrene material, when the probe presses against the surface of the polystyrene and slides, the probe directly sliding on the surface of the lost foam mold will produce scratches or gaps, affecting the surface quality of the lost foam pattern, resulting in poor surface quality when the detected mold is used for lost foam casting. Therefore, there is room for improvement. Summary of the Invention

[0006] In order to facilitate the detection of the surface quality of lost foam patterns and at the same time reduce the impact on the surface quality of lost foam molds, this application provides a detection device and a detection method for the surface quality of a cut lost foam pattern.

[0007] A detection device and a detection method for the surface quality of a cut lost foam pattern provided by this application adopt the following technical solutions: A detection device and detection method for the surface quality of a lost foam cutting, including a frame, a workbench arranged on the frame, and a mounting rod that is lifted and slidably arranged on the frame. The workbench is for placing the mold, and a fixing component for clamping and fixing the mold is arranged on the workbench. A rolling friction detection component and a sliding friction detection component for detecting the surface quality of the mold are also arranged on the mounting rod. The rolling friction detection component and the sliding friction detection component correspond to the surface of the mold alternately. A switching piece for switching the rolling friction detection component and the sliding friction detection component is also arranged on the mounting rod; The rolling friction detection component includes a first detection rod arranged on the mounting rod and a detection wheel rotatably arranged on the first detection rod. A marking liquid is stored in the detection wheel. A plurality of groups of marking holes are formed on the surface of the detection wheel. The plurality of groups of marking holes are arranged at intervals along the circumferential direction of the detection wheel. A marking ball is elastically slidably arranged in the detection wheel. The marking ball is located at the marking hole. The marking ball and the detection wheel are both in active contact with the surface of the mold, and the marking ball is flush with the outer peripheral wall of the detection wheel. The diameter of the middle part of the marking hole is the same as the diameter of the marking ball. An adjusting piece for enlarging the opening of the marking hole is slidably arranged on the detection wheel outside the marking hole; When the detection wheel rotates to a position where the corresponding marking ball is in contact with the surface of the mold, at this time, the adjusting piece enlarges the opening at the corresponding marking hole, so that the marking ball protrudes out of the marking hole.

[0008] By adopting the above technical solution, when it is necessary to detect the surface quality of the lost foam, at this time, the first detection rod is rotated to a position where the detection wheel corresponds to the surface of the mold through the switching piece. At this time, the detection wheel is pressed against the surface of the mold. When the mounting rod slides to drive the detection wheel to roll along the surface of the mold, when the detection wheel rotates to the surface of the mold for detection, when the marking hole is facing the surface of the mold, the adjusting piece enlarges the opening of the marking hole. At this time, the marking ball protrudes out of the marking hole under the action of the elastic restoring force. Since the marking ball is flush with the surface of the detection wheel in the normal state.

[0009] If there is a protrusion on the surface of the mold, at this time, the protrusion presses against the marking ball, causing the marking ball to slide into the marking hole. Since the width of the marking ball is the same as that of the opening of the marking hole, when the marking ball slides into the marking hole, the marking hole is opened, so that the marking liquid in the detection wheel flows out from the marking hole to mark the protrusion; At the same time, when there is a depression on the surface of the mold, at this time, the marking ball protrudes out of the surface of the detection wheel on the basis of the elastic force. At this time, the marking hole is also opened, so that the marking liquid flows out from the marking hole and marks the depression as well.

[0010] Meanwhile, through the adjusting member provided for enlarging the opening of the marking hole, when the detection wheel does not rotate to the position corresponding to the mold surface, at this time, the adjusting member makes the width of the opening of the marking hole smaller than the width of the marking ball, so that the marking ball is not likely to protrude from the opening of the marking hole at this time, thereby reducing the leakage of the marking liquid and improving the accuracy of marking and the accuracy of surface flatness detection.

[0011] When the detection wheel rotates to the position corresponding to the mold surface, at this time, the adjusting member opens the width of the opening of the marking hole. At this time, the marking ball protrudes from the layout of the marking hole under the action of the elastic force, so as to realize the marking of the uneven part. If the mold surface is flat, the marking ball always remains in the marking hole to block the marking hole, and no leakage of the marking liquid will occur, thereby improving the accuracy of marking.

[0012] Optionally, a group of the marking holes includes a plurality of marking holes arranged at intervals along the axial direction of the detection wheel. The adjusting member includes an adjusting plate slidably arranged on the outer peripheral wall of the marking hole. The adjusting plate is elastically slidably arranged on the detection wheel. The sliding direction of the adjusting plate is consistent with the extending direction of the outer peripheral wall of the detection wheel. The first detection rod is vertically movably connected to the workbench. An adjusting block is rotatably connected to the outside of the detection wheel. One side of the adjusting block is movably located inside the detection wheel, and the adjusting block is movably attached to the side of the adjusting plate. The side of the adjusting plate in contact with the adjusting block is inclined. The adjusting block protrudes from the outer peripheral wall of the detection wheel, and the side of the adjusting block protruding from the outer peripheral wall of the detection wheel is movably attached to the first detection rod.

[0013] By adopting the above technical solution, a plurality of marking balls at the same group of marking holes are provided, and the surface quality can be detected in the entire width direction of the mold, thereby further improving the efficiency when detecting the surface quality of the mold, and reducing the detection efficiency; Meanwhile, by providing an adjusting plate for blocking a plurality of marking holes in the same group, when the detection wheel rotates to a position where a group of marking holes corresponds to the mold surface, the adjusting plate slides to a position where it opens the same group of marking holes corresponding to the mold surface, so as to realize the flatness detection and marking in the width direction of the mold.

[0014] By providing an adjusting block that fits and presses against the first detection rod, when the detection wheel rotates to the position corresponding to the fit between the first detection rod and the adjusting block, at this time, under the pressing action of the first detection rod, the adjusting block rotates towards the inside of the detection wheel, so that the adjusting block presses against the adjusting plate and slides in a direction away from the other opening of the marking hole, thereby opening the marking hole, facilitating the marking ball to protrude from the marking hole when the detection wheel rotates to the concave part of the mold surface.

[0015] Optionally, the sliding friction detection component includes a second detection rod disposed on the mounting rod, a laying member disposed on the second detection rod, a lighting member disposed on the second detection rod, and a photosensitive sensor on the second detection rod. A display screen is provided on the machine frame, and the display screen is electrically connected to the photosensitive sensor; The lighting member is disposed obliquely toward the surface of the mold, and the photosensitive sensor is also disposed obliquely toward the surface of the mold. The photosensitive sensor and the lighting member are symmetrically disposed.

[0016] By adopting the above technical solution, since it is relatively easy to judge the depression and flatness of the surface of the lost foam mold by using the marking ball, and during the subsequent casting, the surface finish also determines the surface quality problem of the entire subsequent casting. However, it is not easy to judge the surface finish of the lost foam by using the rolling friction method. Therefore, after the plastic film is laid on the surface of the mold by the laying member, by using the molecular force between the plastic film and the mold, when the surface of the mold is smooth enough, the plastic film is completely attached to the surface of the mold. At this time, the lighting member irradiates the plastic film on the surface of the mold, and the light is reflected back to the photosensitive sensor through the plastic film, and the light intensity received by the photosensitive sensor is used to obtain the current surface finish of the mold.

[0017] When the surface finish of the mold is insufficient, air bubbles will be generated when the plastic film is attached to the surface of the mold, making it difficult for the light emitted by the lighting member to be directly reflected back to the photosensitive sensor. At the same time, when the surface finish of the mold is poor, the dense air bubbles cause the plastic film to produce diffuse reflection, and the light signal received by the photosensitive sensor is poor, thereby obtaining the surface finish of the mold at this time.

[0018] Optionally, the laying member includes a laying roller rotatably disposed on the second detection rod and a winding roller rotatably disposed on the second detection rod. The laying roller is in contact with the surface of the mold, and a flat light-transmitting film is wound around the laying roller. The flat light-transmitting film is disposed in contact with the surface of the mold. A pressing rod is further provided on the second detection rod, and the pressing rod is in movable contact and pressing against the side of the flat light-transmitting film away from the surface of the mold. A gap for sliding friction detection is left between the laying roller and the winding roller. The pressing rod is disposed between the laying roller and the winding roller. The lighting member and the photosensitive sensor are also disposed between the laying roller and the winding roller.

[0019] By adopting the above technical solution, when performing surface finish inspection, when the laying roller is switched to correspond to the mold surface, the laying roller is in contact with the mold surface for inspection, the flat light-transmitting film is laid on the mold surface, and the flat light-transmitting film is in contact with the mold surface through the clamping rod, thereby further improving the accuracy of the subsequent readings obtained by the photosensitive sensor. At the same time, when the finish of the mold surface in the length direction is inspected by rotating the laying roller, the winding roller will wind up the inspected flat light-transmitting film, so that the flat light-transmitting film is not easily contaminated by debris or impurities on the mold surface during each inspection, thereby improving the accuracy of the mold surface finish inspection.

[0020] At the same time, the lighting element and the photosensor are arranged between the laying roller and the winding roller, so that when the mold surface is inspected, the lighting element and the photosensor are facing the standard flat light-transmitting film, thereby reducing the detection accuracy problem caused by the uneven surface of the flat light-transmitting film due to the previous inspection.

[0021] Optionally, the switching member includes a switching block rotatably arranged on the mounting rod, the first detection rod and the second detection rod are both arranged on the switching block, and the first detection rod and the second detection rod are arranged at an angle, a power member for providing rotational power to the switching block is provided on the mounting rod, an output end of the power member is connected to the switching rod, and a limiting structure for making the first detection rod / the second detection rod stably correspond to the mold surface is also provided on the switching block; When the first detection rod corresponds to the mold surface and the detection wheel rotates in contact with the mold surface, the winding roller winds the planar light-transmitting film that has been wound up onto the laying roller.

[0022] By adopting the above technical solution, when rolling friction detection is required, the switching block is driven to rotate by the provided power part so that the first detection rod is facing the mold surface, thereby making the detection wheel facing the mold surface, and making the detection wheel roll against the mold surface, thereby realizing rolling friction detection on the mold surface. At this time, the second detection rod is staggered with the mold surface.

[0023] When the sliding friction detection of the mold surface is required, the switching block is driven to rotate by the power member so that the second detection rod faces the mold surface, thereby realizing the rolling friction detection of the mold surface.

[0024] Immediately after the switching is completed, the positions of the first detection rod and the second detection rod are limited by the provided limiting structure, so as to achieve the stability of the flatness detection and the smoothness detection.

[0025] Optionally, a cleaning rod is provided on one side of the winding roller. The cleaning rod is in contact with the flat light-transmitting film on the winding roller. A plurality of cleaning holes are densely formed on the cleaning rod, and a liquid storage tank is provided on the second detection rod. A cleaning liquid is stored in the liquid storage tank. The cleaning rod is communicated with the liquid storage tank, and a scraping plate is provided on the cleaning rod. The scraping plate is in contact with the surface of the flat light-transmitting film; When the winding roller winds the flat light-transmitting film onto the laying roller, the cleaning holes periodically squeeze out the cleaning liquid onto the flat light-transmitting film.

[0026] By adopting the above technical solution, since most of the flat light-transmitting film is wound onto the winding roller after each detection, when performing the surface finish detection next time, it is necessary to rewind the flat light-transmitting film on the winding roller onto the laying roller. If a large amount of flat light-transmitting film is directly wound on the laying roller, during the winding process, the inconsistent height between the laying roller and the winding roller is likely to affect the flatness of the laying of the flat light-transmitting film.

[0027] Therefore, when performing the sliding friction detection, that is, the surface flatness detection, the winding roller winds the already wound flat light-transmitting film onto the laying roller. When winding the flat light-transmitting film onto the laying roller, the scraping plate scrapes the side of the flat light-transmitting film that is in active contact with the mold surface, reducing the residue of foreign objects or dust, thereby reducing the impact on the subsequent light transmittance detection.

[0028] At the same time, the cleaning holes provided on the cleaning rod extrude the cleaning liquid synchronously when winding the flat light-transmitting film. Through the cooperation of the cleaning liquid and the scraping plate to clean the flat light-transmitting film, the detection accuracy and detection efficiency of the subsequent surface finish of the flat light-transmitting film are improved.

[0029] Optionally, a conveying blade is provided on the cleaning rod. The conveying blade is spiral. The conveying blade is in contact with the inner wall of the cleaning rod. A first rotating gear and a second rotating toothed ring are rotatably provided on the cleaning rod. The first rotating gear and the second rotating toothed ring are coaxially arranged and meshed with each other. An adjusting gear is provided on the winding roller. The adjusting gear is meshed with the second rotating toothed ring; When the second rotating toothed ring rotates forward, the second rotating toothed ring meshes with the first rotating gear; When the second rotating toothed ring rotates reversely, the second rotating toothed ring is not meshed with the first rotating gear.

[0030] By adopting the above technical solution, when the cleaning wheel rotates while pressing against the surface of the mold, it drives the winding roller and the laying roller to rotate forward, thereby driving the second rotating gear ring to rotate forward. At this time, the second rotating gear ring meshes with the first rotating gear. While the flat light-transmitting film wound on the winding roller is wound onto the laying roller, the conveying blade rotates to extrude the cleaning liquid through the cleaning holes on the cleaning rod, thereby realizing the cleaning of the flat light-transmitting film and facilitating the subsequent reuse of the flat light-transmitting film.

[0031] When performing surface finish detection, at this time, the flat light-transmitting film already wound on the laying roller is wound onto the laying roller. At this time, the second rotating gear ring rotates reversely, and at this time, the second rotating gear ring is not meshed with the first rotating gear. Therefore, at this time, the cleaning liquid is not easily discharged from the cleaning roller on the cleaning rod, reducing the waste of the cleaning liquid.

[0032] Optionally, the scraping plate is arranged obliquely towards the winding roller. The scraping plate is rotatably arranged on the cleaning rod, and a restoring member is provided at the rotating shaft of the scraping plate. The restoring member is used to make the scraping plate always fit the flat light-transmitting film.

[0033] By adopting the above technical solution, when the flat light-transmitting film is wound onto the laying roller, at this time, the scraping plate is always arranged obliquely towards the winding roller, so that the cleaning liquid is evenly distributed on the flat light-transmitting film, thereby realizing the efficient cleaning of the flat light-transmitting film.

[0034] In summary, the present application includes at least one of the following beneficial technical effects: 1. When it is necessary to perform surface quality detection on the surface of the lost mold, at this time, the first detection rod is rotated to the position corresponding to the detection wheel and the mold surface through the switching member. At this time, the detection wheel presses against the mold surface. When the mounting rod slides to drive the detection wheel to roll along the mold surface, when the detection wheel rotates to the mold surface for detection, when the marking hole is exactly opposite to the mold surface, the adjusting member enlarges the opening of the marking hole. At this time, the marking ball protrudes from the marking hole under the action of the elastic restoring force. Since the marking ball is flush with the surface of the detection wheel under normal conditions; if there is a protrusion on the mold surface, at this time, the protrusion presses against the marking ball, causing the marking ball to slide into the marking hole. Since the width of the marking ball is the same as that of the opening of the marking hole, when the marking ball slides into the marking hole, the marking hole is opened, so that the marking liquid in the detection wheel flows out from the marking hole to mark the protrusion; at the same time, when there is a depression on the mold surface, at this time, the marking ball protrudes from the surface of the detection wheel on the basis of the elastic force, and at this time, the marking hole is also opened, so that the marking liquid flows out from the marking hole and marks the depression as well; 2. By setting an adjusting plate that plugs multiple marking holes in the same group, when the detection wheel rotates to a position where a group of marking holes corresponds to the mold surface, the adjusting plate slides to a position where it opens the same group of marking holes corresponding to the mold surface, thereby achieving the flatness detection and marking in the width direction of the mold; 3. By setting a laying roller, a winding roller, and a planar light-transmitting film, when the surface finish of the mold is insufficient, air bubbles will be generated when the plastic film is attached to the mold surface, making it difficult for the light emitted by the lighting component to be directly reflected back to the photosensitive sensor. At the same time, when the surface finish of the mold is poor, the dense air bubbles cause diffuse reflection of the plastic film. At this time, the light signal received by the photosensitive sensor is poor, thereby obtaining the surface finish of the mold at this time. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is the overall structural schematic diagram of a detection device for the surface quality of a lost foam cutting surface in an embodiment of the present application; Figure 2 is the connection structural schematic diagram of the rolling friction detection component; Figure 3 is the connection structural schematic diagram of the rolling friction detection component from another perspective; Figure 4 is the connection structural schematic diagram of the sliding friction component; Figure 5 is the connection structural schematic diagram of the sliding friction detection component from another perspective.

[0036] Reference numerals: 1, frame; 11, workbench; 12, mounting rod; 13, fixing component; 14, switching piece; 141, switching block; 15, limiting structure; 2, rolling friction detection component; 21, first detection rod; 22, detection wheel; 23, marking hole; 24, marking ball; 25, marking spring; 26, adjusting piece; 261, adjusting piece; 262, adjusting spring; 263, adjusting block; 3, sliding friction detection component; 31, second detection rod; 32, laying piece; 321, laying roller; 322, winding roller; 323, planar light-transmitting film; 324, pressing rod; 33, lighting component; 34, photosensitive sensor; 35, display screen; 4, cleaning rod; 41, cleaning hole; 42, liquid storage tank; 43, scraping plate; 431, return spring; 44, conveying blade; 45, first rotating gear; 46, second rotating toothed ring; 47, adjusting gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following will Figures 1-5 further describe the present application in detail.

[0038] An embodiment of the present application discloses a detection device for the surface quality of a lost foam cutting surface. Refer to Figure 1, A detection device for the surface quality of a lost foam cutting includes a vertically arranged frame 1 and a workbench 11 horizontally fixed on the frame 1. The workbench 11 is for placing the mold, and a fixing component 13 for fixing the position of the mold is also provided on the workbench 11. In this application, the fixing component 13 includes a clamping block fixed on the workbench 11. There are two groups of clamping tubes. The two clamping blocks are arranged oppositely, and the two clamping blocks clamp and fix the mold. At the same time, a mounting rod 12 is arranged on the frame 1 to move up and down and slide. The sliding direction of the mounting rod 12 is horizontal and consistent with the length direction of the workbench 11. At the same time, a rolling friction detection component 2 and a sliding friction detection component 3 for detecting the surface quality of the mold are also provided on the mounting rod 12.

[0039] Refer to Figure 1 and Figure 2 , The rolling friction detection component 2 includes a first detection rod 21 arranged on the mounting rod 12 and a detection wheel 22 rotatably arranged on the first detection rod 21. The detection wheel 22 is hollow, and a marking liquid is stored in the detection wheel 22. A plurality of marking holes 23 are formed on the surface of the detection wheel 22. The plurality of marking holes 23 are arranged at intervals along the circumference direction of the detection wheel 22. Each group of marking holes 23 includes a plurality of marking holes 23 arranged at intervals along the axial direction of the detection wheel 22. And a marking ball 24 is elastically slidably arranged in the detection wheel 22. The sliding direction of the marking ball 24 is consistent with the radius direction of the detection wheel 22, and the marking ball 24 is flush with the outer peripheral wall of the detection wheel 22. At the same time, the diameter of the middle part of the marking hole 23 is consistent with the diameter of the marking ball 24, and an adjusting member 26 for enlarging the opening of the marking hole 23 is slidably arranged on the detection wheel 22 outside the marking hole 23.

[0040] Refer to Figure 2 and Figure 3 , The adjusting member 26 includes an adjusting plate 261 slidably arranged on the outer peripheral wall of the marking hole 23. The adjusting plate 261 is elastically slidably arranged on the detection wheel 22. An adjusting spring 262 is fixedly connected to the adjusting plate 263. The adjusting spring 262 is fixedly connected to the inner wall of the marking hole. And the sliding direction of the adjusting plate 261 is consistent with the extending direction of the outer peripheral wall of the detection wheel 22. And when the detection wheel 22 is in contact with the surface of the mold, at this time, the first detection rod 21 is perpendicular to the workbench 11. The detection wheel 22 is rotatably arranged relative to the first detection rod 21, that is, the detection wheel 22 is rotatably sleeved on the first detection rod 21. A regulating block 263 is rotatably connected to the side wall of the detection wheel 22 close to the first detection rod 21. One side of the regulating block 263 is movably located inside the detection wheel 22, and the regulating block 263 is in movable contact with the side of the adjusting plate 261. The side of the adjusting plate 261 in movable contact with the regulating block 263 is inclined. That is, when the regulating block 263 rotates towards the inside of the detection wheel 22, the regulating block 263 presses against the adjusting plate 261 to slide, so that the adjusting plate 261 opens the marking hole 23, thereby facilitating the marking ball 24 to protrude from the marking hole 23.

[0041] When there is a protrusion on the mold surface, the protrusion presses against the marking ball 24 at this time, causing the marking ball 24 to slide into the marking hole 23. Since the width of the marking ball 24 is consistent with the width of the opening of the marking hole 23, when the marking ball 24 slides into the marking hole 23, the marking hole 23 is opened, so that the marking liquid in the detection wheel 22 flows out from the marking hole 23 to mark the protrusion; At the same time, when there is a depression on the mold surface, at this time the marking ball 24 protrudes from the surface of the detection wheel 22 on the basis of the elastic force. At this time, the marking hole 23 is also opened, so that the marking liquid flows out from the marking hole 23 and marks the depression as well.

[0042] Here, the marking ball 24 is elastically arranged in the detection wheel 22. An installation rod 12 is arranged in the detection wheel 22. A marking spring 25 is fixedly connected to the marking ball 24, and the other end of the marking spring 25 is fixedly connected to the installation rod 12. At the same time, in order to facilitate pulling the marking ball 24 back into the marking hole 23 after the detection, an installation block is arranged on the marking ball 24, an adjusting rod is arranged on the first detection rod 21, and an installation groove is opened on the adjusting rod. The installation groove is arranged obliquely from a position close to the axis of the detection wheel 22 towards a direction away from the axis of the detection wheel 22, and the installation block is slidably arranged in the installation groove. Thus, when the detection wheel 22 rotates to a position separated from the mold surface, at this time, under the limitation of the installation groove, the installation block slides towards the axis of the detection wheel 22, so that the marking ball 24 slides towards the axis of the detection wheel 22, making the marking ball 24 located in the marking hole 23, thereby reducing the leakage of the marking liquid and facilitating the next surface quality detection.

[0043] Since it is relatively easy to judge the depression degree and flatness of the mold surface by using the marking ball 24 for the surface detection of the lost foam mold, and during the subsequent casting, the surface finish also determines the surface quality problem of the entire subsequent casting. However, it is not easy to judge the surface finish of the lost foam by using the rolling friction method. Therefore, referring to Figure 4 and Figure 5 , the sliding friction component assembly includes a second detection rod 31 arranged on the installation rod 12, a laying component 32 arranged on the second detection rod 31, a lighting component 33 arranged on the second detection rod 31, and a photosensitive sensor 34 arranged on the second detection rod 31. A display screen 35 is further arranged on the frame 1, and the display screen 35 is electrically connected to the photosensitive sensor 34.

[0044] The lighting component 33 is arranged obliquely towards the surface of the mold, and the photosensitive sensor 34 is also arranged obliquely towards the surface of the mold. The photosensitive sensor 34 and the lighting component 33 are symmetrically arranged.

[0045] The laying member 32 includes a laying roller 321 rotatably arranged on the second detection rod 31 and a winding roller 322 rotatably arranged on the second detection rod 31. The laying roller 321 is in contact with the surface of the mold. A planar light-transmitting film 323 is wound around the laying roller 321. The planar light-transmitting film 323 is arranged in contact with the surface of the mold. And a pressing rod 324 is also arranged on the second detection rod 31. The pressing rod 324 is in movable contact and pressing against the side of the planar light-transmitting film 323 away from the surface of the mold. A gap for sliding friction detection is left between the laying roller 321 and the winding roller 322. The pressing rod 324 is arranged between the laying roller 321 and the winding roller 322. The lighting member 33 and the photosensitive sensor 34 are also arranged between the laying roller 321 and the winding roller 322.

[0046] After the surface of the mold is paved with a plastic film by the laying member 32, by using the molecular force between the plastic film and the mold, when the surface of the mold is smooth enough, the plastic film is completely attached to the surface of the mold. At this time, the lighting member 33 irradiates the plastic film on the surface of the mold, and the light is reflected back to the photosensitive sensor 34 through the plastic film. The light intensity received by the photosensitive sensor 34 is used to obtain the surface finish of the current mold surface.

[0047] When the surface finish of the mold surface is insufficient, bubbles will be generated when the plastic film is attached to the surface of the mold, so that the light emitted by the lighting member 33 is not easily directly reflected back to the photosensitive sensor 34. At the same time, when the surface finish of the mold surface is poor, the dense bubbles cause the plastic film to have diffuse reflection. At this time, the optical signal received by the photosensitive sensor 34 is poor, so as to obtain the surface finish of the mold surface at this time.

[0048] In order to facilitate the switching of the surface quality detection of the mold surface, a switching member 14 is arranged on the frame 1. The switching member 14 includes a switching block 141 rotatably arranged on the mounting rod 12. The switching block 141 is in an "L" shape. The first detection rod 21 and the second detection rod 31 are respectively fixedly connected to both ends of the switching block 141. The first detection block and the second detection block are arranged at a 90° angle. And a power member for providing rotational power for the switching block 141 is arranged on the mounting rod 12. The output end of the power member is connected to the switching rod. In this application, the power member is a motor. And a limiting structure 15 for stably corresponding the first detection rod 21 / the second detection rod 31 to the surface of the mold is also arranged on the switching block 141.

[0049] In this application, the limiting structure 15 is a switching hole penetrating through the switching block 141 and the mounting rod 12. The switching hole is in a polygonal shape. And a positioning block is slidably penetrated through the switching block 141. The positioning block is in contact with the inner peripheral wall of the switching hole.

[0050] At the same time, when the first detection rod 21 corresponds to the surface of the mold and the detection wheel 22 rotates in contact with the surface of the mold, the winding roller 322 winds the already wound planar light-transmitting film 323 onto the laying roller 321.

[0051] On one side of the winding roller 322, the second detection rod 31 is provided with a cleaning rod 4. The cleaning rod 4 is in contact with the planar light-transmitting film 323 on the winding roller 322. A plurality of cleaning holes 41 are densely arranged on the side of the cleaning rod 4 close to the winding roller 322. A liquid storage tank 42 is provided on the second detection rod 31, and a cleaning liquid is stored in the liquid storage tank 42. The cleaning rod 4 is communicated with the liquid storage tank 42. A scraping plate 43 is also provided on the second detection rod 31. The scraping plate 43 is in contact with the surface of the planar light-transmitting film 323. When the winding roller 322 winds the planar light-transmitting film 323 onto the laying roller 321, the cleaning holes 41 periodically squeeze out the cleaning liquid onto the planar light-transmitting film 323.

[0052] The cleaning rod 4 is provided with a conveying blade 44. The conveying blade 44 is spiral. The conveying blade 44 is in contact with the inner wall of the cleaning rod 4. A first rotating gear 45 and a second rotating ring gear 46 are rotatably arranged on the winding roller 322. The first rotating gear 45 and the second rotating gear are coaxially arranged and meshed movably. An adjusting gear 47 is provided on the cleaning rod 4. The adjusting gear 47 is connected with the second adjusting ring gear by a belt drive. When the second rotating ring gear 46 rotates forward, the second rotating ring gear 46 meshes with the first rotating gear 45. When the second rotating ring gear 46 rotates backward, the second rotating ring gear 46 is not meshed with the first rotating gear 45.

[0053] And the scraping plate 43 is rotatably arranged on the cleaning rod 4. A restoring member is provided at the rotating shaft of the scraping plate 43. In this application, the restoring member is a restoring spring 431. And the scraping plate 43 is arranged obliquely in the direction towards the winding roller 322.

[0054] The embodiment of the present application also discloses a detection method for the surface quality of the lost foam cutting, including the following steps: S1. First, clean the surface of the mold, and place the mold to be detected on the workbench 11 and make the mold stably located on the workbench 11 through the fixing component 13. S2. Through an external power source, lower the mounting rod 12 to the position where the detection wheel 22 is in contact with the surface of the mold. At this time, the mounting rod 12 slides along the length direction of the mold, so that the detection wheel 22 rolls in contact with the surface of the mold to realize the detection of the flatness of the surface of the mold. S3. By rotating the switching block 141, rotate the second detection rod 31 to the position corresponding to the surface of the mold. At this time, the laying roller 321 fits the planar light-transmitting film 323 to the surface of the mold, and irradiates the planar light-transmitting film 323 on the surface of the mold through the lighting member 33. Judge the smoothness of the surface of the mold according to the light reflected by the photosensitive sensor 34. S4. When performing flatness detection on the next mold, when the detection wheel 22 rotates while being in contact with the mold surface, the winding roller 322 and the laying roller 321 rotate synchronously, so that the planar light-transmitting film 323 on the winding roller 322 is wound onto the laying roller 321; S5. When the planar light-transmitting film 323 on the winding roller 322 is wound onto the laying roller 321, the surface of the planar light-transmitting film 323 is cleaned, so as to realize the reuse of the planar light-transmitting film 323.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A device for detecting the surface quality of lost foam cutting, characterized in that: The invention comprises a frame (1), a workbench (11) arranged on the frame (1), and a mounting rod (12) which is lifted and slidably arranged on the frame (1); the workbench (11) is used to place a mold, and a fixing component (13) for clamping and fixing the mold is provided on the workbench (11); a rolling friction detection component (2) and a sliding friction detection component (3) for detecting the surface quality of the mold are also provided on the mounting rod (12); the rolling friction detection component (2) and the sliding friction detection component (3) correspond to the surface of the mold selectively; and a switching member (14) for switching between the rolling friction detection component (2) and the sliding friction detection component (3) is also provided on the mounting rod (12); The rolling friction detection assembly (2) comprises a first detection rod (21) disposed on the mounting rod (12) and a detection wheel (22) rotatably disposed on the first detection rod (21); a marking liquid is stored in the detection wheel (22); a plurality of groups of marking holes (23) are provided on the surface of the detection wheel (22); the plurality of groups of marking holes (23) are arranged at intervals along the circumference direction of the detection wheel (22); a marking ball (24) is elastically slidably disposed in the detection wheel (22); the marking ball (24) is located at the marking hole (23); the marking ball (24) and the detection wheel (22) are both movably fitted to the surface of the mold; the marking ball (24) is flush with the outer peripheral wall of the detection wheel (22); the diameter of the middle portion of the marking hole (23) is consistent with the diameter of the marking ball (24); and the detection wheel (22) is slidably disposed on the outer side of the marking hole (23) with an adjustment member (26) for enlarging the opening of the marking hole (23); When the detection wheel (22) rotates to a position where the corresponding marking ball (24) is in contact with the mold surface, the adjusting member (26) enlarges the opening of the corresponding marking hole (23) so that the marking ball (24) is movable and protrudes from the marking hole (23).

2. The device for detecting the surface quality of lost foam cutting according to claim 1, characterized in that: A group of the marking holes (23) includes a plurality of marking holes (23) arranged at intervals along the axial direction of the detection wheel (22); the adjusting member (26) includes an adjusting plate (261) slidably arranged on the outer peripheral wall of the marking hole (23); the adjusting plate (261) is elastically slidably arranged on the detection wheel (22); the sliding direction of the adjusting plate (261) is consistent with the extension direction of the outer peripheral wall of the detection wheel (22); the first detection rod (21) is vertically movable to the workbench (11); the outer peripheral wall of the detection wheel (22) is The side of the adjusting plate (261) is rotatably connected to an adjusting block (263), one side of the adjusting block (263) is movably located in the detection wheel (22), and the adjusting block (263) is movably fitted with the side of the adjusting plate (261), the side of the adjusting plate (261) movably fitted with the adjusting block (263) is inclined, the adjusting block (263) is movably protruded from the outer peripheral wall of the detection wheel (22), and the side of the adjusting block (263) protruding from the outer peripheral wall of the detection wheel (22) is movably fitted with the first detection rod (21).

3. The device for detecting the surface quality of lost foam cutting according to claim 2 is characterized in that: The sliding friction detection assembly (3) comprises a second detection rod (31) arranged on the mounting rod (12), a laying member (32) arranged on the second detection rod (31), a lighting member (33) arranged on the second detection rod (31), and a photosensitive sensor (34) on the second detection rod (31); a display screen (35) is provided on the frame (1), and the display screen (35) is electrically connected to the photosensitive sensor (34); The light irradiating element (33) is arranged obliquely toward the mold surface, and the light sensitive sensor (34) is also arranged obliquely toward the mold surface; the light sensitive sensor (34) and the light irradiating element (33) are arranged symmetrically.

4. The device for detecting the surface quality of lost foam cutting according to claim 3 is characterized in that: The laying member (32) comprises a laying roller (321) rotatably arranged on the second detection rod (31) and a winding roller (322) rotatably arranged on the second detection rod (31), the laying roller (321) being in contact with the surface of the mould, a planar light-transmitting film (323) being wound around the laying roller (321), the planar light-transmitting film (323) being arranged in contact with the surface of the mould, a pressing rod (324) being further arranged on the second detection rod (31), the The pressing rod (324) is movably fitted and pressed against a side of the planar light-transmitting film (323) away from the mold surface, a gap for sliding friction detection is left between the laying roller (321) and the winding roller (322), the pressing rod (324) is arranged between the laying roller (321) and the winding roller (322), and the light irradiating element (33) and the light-sensitive sensor (34) are also arranged between the laying roller (321) and the winding roller (322).

5. The device for detecting the surface quality of lost foam cutting according to claim 4 is characterized in that: The switching member (14) comprises a switching block (141) rotatably arranged on the mounting rod (12); the first detection rod (21) and the second detection rod (31) are both arranged on the switching block (141); the first detection rod (21) and the second detection rod (31) are arranged at an angle; a power member for providing rotational power to the switching block (141) is provided on the mounting rod (12); an output end of the power member is connected to the switching rod; and a limiting structure (15) for making the first detection rod (21) / the second detection rod (31) correspond stably to a mold surface is also provided on the switching block (141); When the first detection rod (21) corresponds to the mold surface and the detection wheel (22) rotates in contact with the mold surface, the winding roller (322) winds the wound planar light-transmitting film (323) onto the laying roller (321).

6. The device for detecting the surface quality of lost foam cutting according to claim 5, characterized in that: A cleaning rod (4) is provided on one side of the winding roller (322), the cleaning rod (4) being in contact with the flat light-transmitting film on the winding roller (322); cleaning holes (41) are densely distributed on the cleaning rod (4), and a liquid storage tank (42) is provided on the second detection rod (31); cleaning liquid is stored in the liquid storage tank (42); the cleaning rod (4) is connected to the liquid storage tank (42), and a scraper (43) is provided on the cleaning rod (4), and the scraper (43) is in contact with the surface of the flat light-transmitting film (323); When the winding roller (322) winds the planar light-transmitting film (323) onto the laying roller (321), the cleaning holes (41) periodically squeeze the cleaning liquid onto the planar light-transmitting film (323).

7. The device for detecting the surface quality of lost foam cutting according to claim 6, characterized in that: The cleaning rod (4) is provided with a conveying blade (44), the conveying blade (44) is spiral-shaped, and the conveying blade (44) is in contact with the inner wall of the cleaning rod (4); a first rotating gear (45) and a second rotating gear ring (46) are rotatably provided on the cleaning rod (4), the first rotating gear (45) and the second rotating gear ring (46) are coaxially arranged and meshed with each other, and the winding roller (322) is provided with an adjusting gear (47), and the adjusting gear (47) is meshed with the second rotating gear ring (46); When the second rotating gear ring (46) rotates in the forward direction, the second rotating gear ring (46) meshes with the first rotating gear (45); When the second rotating gear ring (46) rotates in the reverse direction, the second rotating gear ring (46) is not meshed with the first rotating gear (45).

8. The device for detecting the surface quality of lost foam cutting according to claim 7, characterized in that: The scraper (43) is arranged obliquely in the direction of the winding roller (322), the scraper (43) is rotatably arranged on the cleaning rod (4), and a return member is provided at the rotating shaft of the scraper (43), the return member is used to make the scraper (43) always fit the flat light-transmitting film (323).

9. A method for detecting the surface quality of lost foam cutting, applied to the device for detecting the surface quality of lost foam cutting as claimed in claim 8, characterized in that: The steps include: S1, firstly, cleaning the surface of the mold, placing the mold to be inspected on a workbench (11), and stably positioning the mold on the workbench (11) through a fixing component (13); S2, the mounting rod (12) is lowered to a position where the detection wheel (22) is in contact with the mold surface by an external power source, and the mounting rod (12) slides along the length direction of the mold, so that the detection wheel (22) rolls in contact with the mold surface, thereby realizing the detection of the flatness of the mold surface; S3, by rotating the switching block (141), the second detection rod (31) is rotated to a position corresponding to the mold surface, at which time the laying roller (321) puts the plane light-transmitting film (323) on the mold surface, and the light irradiating element (33) illuminates the plane light-transmitting film (323) on the mold surface, and the smoothness of the mold surface is judged based on the reflected light received by the photosensor (34); S4, when the next mold is tested for flatness, the testing wheel (22) rotates in contact with the mold surface, and the winding roller (322) and the laying roller (321) rotate synchronously, so that the flat light-transmitting film (323) on the winding roller (322) is wound onto the laying roller (321); S5, when the planar light-transmitting film (323) on the winding roller (322) is wound onto the laying roller (321), the surface of the planar light-transmitting film (323) is cleaned, thereby achieving the reuse of the planar light-transmitting film (323).

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