A lost foam cutting surface quality detection device and a detection method thereof

Abstract

The application relates to a lost foam surface quality cutting detection device and a detection method thereof, and relates to the technical field of lost foam surface detection. The 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 used for placing a mold, and a fixing assembly for clamping and fixing the mold is arranged on the workbench. A rolling friction detection assembly and a sliding friction detection assembly for detecting the surface quality of the surface of the mold are further arranged on the mounting rod. The rolling friction detection assembly and the sliding friction detection assembly correspond to the surface of the mold in an alternative mode. A switching piece for switching the rolling friction detection assembly and the sliding friction detection assembly is further arranged on the mounting rod. The application has the effects of facilitating the detection of the surface quality of the lost foam and reducing the influence on the surface quality of the lost foam mold.

Description

Technical Field

[0001] This application relates to the technical field of lost foam surface inspection, and in particular to an apparatus and method for inspecting the quality of the cut surface of lost foam. Background Technology

[0002] Lost foam casting is a new type of casting method that involves bonding and assembling paraffin or foam models similar in size and shape to the casting into a model cluster, coating them with refractory paint and drying them, then embedding them in dry quartz sand for vibration molding, and pouring them under negative pressure to vaporize the model, with the liquid metal occupying the model's position. After solidification and cooling, the casting is formed. Because lost foam casting does not require mold removal, has no parting surface, and has no sand core, the casting has no flash, burrs, or draft angles.

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

[0004] Comparatively speaking, it is more convenient to process the surface of lost foam than to grind the surface of the casting. Therefore, after the lost foam is cut, the surface quality of the lost foam needs to be inspected.

[0005] The conventional equipment for surface quality inspection of lost foam casting is a roughness tester or a profile tester. The detection principle of both is to press a probe against the surface of the object to be inspected and slide it a certain distance. The surface quality is detected by the change in the torque of the probe, thereby judging the smoothness and flatness of the lost foam casting mold surface. However, because polystyrene is a relatively soft material, when the probe slides directly on the surface of the lost foam casting mold, it will cause scratches or gaps, affecting the surface quality of the lost foam casting. As a result, the surface quality of the mold after inspection is poor when lost foam casting is performed. Therefore, it needs to be improved. Summary of the Invention

[0006] To facilitate the inspection of the surface quality of lost foam casting while minimizing the impact on the surface quality of the lost foam casting mold, this application provides an apparatus and method for inspecting the surface quality of cut lost foam casting.

[0007] The present application provides a device and method for detecting the surface quality of lost foam cutting, which adopts the following technical solution:

[0008] A kind of detection device of lost foam cutting surface quality and its detection method, including rack, worktable being arranged on the rack, and installation rod being lifted and slidingly arranged on the rack, the worktable is for mold placement, and the worktable is equipped with the fixed component of being fixed to the mold for clamping, the installation rod is also equipped with the rolling friction detection component and sliding friction detection component for the surface quality detection of the surface of mold, the rolling friction detection component and the sliding friction detection component are selectively corresponding with the surface of mold, the installation rod is also equipped with the switching piece for switching the rolling friction detection component and sliding friction detection component;

[0009] The rolling friction detection component includes first detection rod arranged on the installation rod and detection wheel rotatably arranged on the first detection rod, the detection wheel stores marking liquid, the surface of the detection wheel is provided with a plurality of marking holes, a plurality of the marking holes are arranged along the circumferential direction of the detection wheel, a marking ball is elastically and slidingly 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 outer circumferential wall of the marking ball and the detection wheel is flush, the diameter of the middle part of the marking hole is consistent with the diameter of the marking ball, and the detection wheel is slidingly provided with an adjusting member for adjusting the opening of the marking hole outside the marking hole.

[0010] When the detection wheel rotates to the position corresponding to the marking ball being in contact with the surface of the mold, the adjusting member enlarges the opening of the corresponding marking hole at this time, so that the marking ball protrudes from the marking hole.

[0011] By adopting the above technical scheme, when the surface quality of the lost foam needs to be detected, the first detection rod is rotated to the position corresponding to the detection wheel and the surface of the mold by the switching member at this time, the detection wheel is in contact with the surface of the mold at this time, and the installation rod slides to drive the detection wheel to roll in contact with the surface of the mold, when the detection wheel rotates to the surface of the mold for detection, the adjusting member enlarges the opening of the marking hole when the marking hole is directly opposite the surface of the mold at this time, and 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 in the normal state.

[0012] If there is a protrusion on the surface of the mold, the protrusion is in contact with the marking ball at this time, so that the marking ball slides towards the marking hole, since the width of the marking ball and the opening of the marking hole is consistent, the marking hole is opened when the marking ball slides towards the marking hole, so that the marking liquid in the detection wheel flows out from the marking hole to mark the protrusion;

[0013] Meanwhile, when the concave exists on the mold surface, the marking ball protrudes from the surface of the detection wheel on the basis of the elastic force, the marking hole is also opened at this time, so that the marking liquid flows out from the marking hole, and the concave is also marked.

[0014] Meanwhile, by setting the adjusting member for adjusting the opening of the marking hole, when the detection wheel is not rotated to the position corresponding to the mold surface, the width of the opening of the marking hole is smaller than the width of the marking ball at this time, so that the marking ball is not easy 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.

[0015] When the detection wheel is rotated to the position corresponding to the mold surface, the width of the opening of the marking hole is opened by the adjusting member at this time, and the marking ball protrudes from the marking hole under the action of the elastic force, so that the uneven part is marked, and if the mold surface is flat, the marking ball is always located in the marking hole to block the marking hole, so that the leakage of the marking liquid is avoided, thereby improving the accuracy of marking.

[0016] Optionally, a plurality of marking holes are arranged along the axis direction of the detection wheel, the adjusting member comprises an adjusting plate slidingly arranged on the peripheral wall of the marking hole, the adjusting plate is elastically slidingly arranged on the detection wheel, the sliding direction of the adjusting plate is consistent with the extension direction of the peripheral wall of the detection wheel, the first detection rod is movably perpendicular to the workbench, the detection wheel is rotatably connected with an adjusting block on the outside, one side of the adjusting block is movably located in the detection wheel, the adjusting block is movably attached to the side of the adjusting plate, the side of the adjusting plate movably attached to the adjusting block is inclined, the adjusting block is movably protruded from the peripheral wall of the detection wheel, and the side of the adjusting block protruded from the peripheral wall of the detection wheel is movably attached to the first detection rod.

[0017] By adopting the above technical scheme, a plurality of marking balls are arranged at the same group of marking holes, so that the surface quality can be detected in the width direction of the entire mold, thereby further improving the efficiency of detecting the surface quality of the mold, and reducing the detection efficiency.

[0018] Meanwhile, by setting the adjusting plate for blocking the plurality of marking holes in the same group, when the detection wheel is rotated to the position corresponding to the mold surface, the adjusting plate is slid to the position for opening the same group of marking holes corresponding to the mold surface, so that the flatness detection and marking in the width direction of the mold are realized.

[0019] By setting the adjusting block abutting against the first detection rod, when the detection wheel rotates to the position corresponding to the abutting of the first detection rod and the adjusting block, at this time, under the abutting action of the first detection rod, the adjusting block rotates towards the inside of the detection wheel, so that the adjusting block abuts against the adjusting plate and slides towards the direction away from the other opening of the mark hole, thereby opening the mark hole, facilitating the protrusion of the mark ball from the mark hole to realize marking when the detection wheel rotates to the recessed part of the mold surface.

[0020] Optionally, the sliding friction detection assembly comprises a second detection rod arranged on the mounting rod, a laying member arranged on the second detection rod, an illumination member arranged on the second detection rod, and a photosensitive sensor on the second detection rod, and a display screen is arranged on the rack, and the display screen is electrically connected with the photosensitive sensor.

[0021] The illumination member is arranged obliquely towards the mold surface, and the photosensitive sensor is also arranged obliquely towards the mold surface, and the photosensitive sensor and the illumination member are symmetrically arranged.

[0022] By adopting the above technical scheme, since the recess degree and flatness of the mold surface can be easily judged when the mark ball is used to detect the surface of the lost foam mold, and the surface finish is also a factor affecting the quality of the entire casting in subsequent casting, and it is not easy to judge the surface finish of the lost foam by using rolling friction, therefore, after the laying member lays the plastic film on the mold surface, the molecular force between the plastic film and the mold is used, when the mold surface is smooth enough, the plastic film and the mold surface are completely attached, at this time, the illumination member irradiates the plastic film on the mold surface, and the plastic film reflects the light back to the photosensitive sensor, and the light intensity received by the photosensitive sensor is used to obtain the surface finish of the mold.

[0023] When the surface finish of the mold is not enough, bubbles will be generated when the plastic film and the mold surface are attached, so that the light emitted by the illumination member is not easily reflected directly back to the photosensitive sensor, and when the surface finish of the mold is poor, the plastic film produces diffuse reflection due to the dense bubbles, at this time, the light signal received by the photosensitive sensor is poor, thereby obtaining the surface finish of the mold at this time.

[0024] Optionally, the laying member comprises a laying roller rotatably arranged on the second detection rod and a winding roller rotatably arranged on the second detection rod, the laying roller is attached to the surface of the mold, the laying roller is provided with a planar light-transmitting film, the planar light-transmitting film is attached to the surface of the mold, the second detection rod is further provided with a pressing rod, the pressing rod is movably attached to the side of the planar light-transmitting film away from the surface of the mold, a sliding friction detection gap is left between the laying roller and the winding roller, the pressing rod is arranged between the laying roller and the winding roller, and the light source and the photosensitive sensor are arranged between the laying roller and the winding roller.

[0025] By adopting the above technical scheme, when the surface roughness is detected, the laying roller is attached to the surface of the mold at this time, the planar light-transmitting film is laid on the surface of the mold, and the planar light-transmitting film is attached to the surface of the mold through the pressing rod, thereby further improving the accuracy of the reading obtained by the photosensitive sensor, and when the roughness of the surface of the mold in the length direction is detected through the rotation of the laying roller, the winding roller winds the planar light-transmitting film that has been detected, so that the planar light-transmitting film is not easily contaminated with debris or impurities on the surface of the mold during each detection, thereby improving the accuracy of the roughness detection of the surface of the mold.

[0026] Meanwhile, the light source and the photosensitive sensor are arranged between the laying roller and the winding roller, so that the light source and the photosensitive sensor are always opposite to the standard planar light-transmitting film when the surface of the mold is detected, thereby reducing the detection accuracy problem caused by the uneven surface layer of the planar light-transmitting film due to the previous detection.

[0027] Optionally, the switching member comprises a switching block rotatably arranged on the mounting rod, the first detection rod and the second detection rod are arranged on the switching block, and the first detection rod and the second detection rod are arranged at an angle, the mounting rod is provided with a power member for providing rotary power for the switching block, the output end of the power member is connected with the switching rod, and the switching block is further provided with a limiting structure for stably corresponding the first detection rod / second detection rod to the surface of the mold.

[0028] When the first detection rod corresponds to the surface of the mold and the detection wheel rotates while attaching to the surface of the mold, the winding roller winds the planar light-transmitting film that has been wound on the laying roller.

[0029] By adopting the above technical scheme, when rolling friction detection is required, the first detection rod is arranged opposite to the surface of the mold by driving the switching block to rotate through the arranged power member, so that the detection wheel is arranged opposite to the surface of the mold, the detection wheel is attached to the surface of the mold to roll, rolling friction detection of the surface of the mold is realized, and the second detection rod is staggered with the surface of the mold at this time.

[0030] When the sliding friction detection of the mold surface is needed, the second detection rod is made to face the mold surface by driving the switching block to rotate, so that the rolling friction detection of the mold surface is realized.

[0031] The positions of the first detection rod and the second detection rod are limited by the limiting structure after the switching is completed, so that the stability of the flatness detection and the smoothness detection is realized.

[0032] Optionally, one side of the winding roller is provided with a cleaning rod, the cleaning rod is attached to the flat light-transmitting film on the winding roller, a plurality of cleaning holes are formed in the cleaning rod, a liquid storage tank is arranged on the second detection rod, the liquid storage tank stores cleaning liquid, the cleaning rod is in communication with the liquid storage tank, and a scraper is arranged on the cleaning rod and attached to the surface of the flat light-transmitting film.

[0033] When the winding roller winds the flat light-transmitting film onto the laying roller, the cleaning holes periodically extrude cleaning liquid onto the flat light-transmitting film.

[0034] By adopting the above technical solution, after each detection, most of the flat light-transmitting film is wound onto the winding roller. When the surface smoothness detection is performed next time, the flat light-transmitting film on the winding roller needs to be wound onto the laying roller again. If a large amount of flat light-transmitting film is directly wound onto the laying roller, the height difference between the laying roller and the winding roller in the laying and winding process can easily affect the flatness of the flat light-transmitting film.

[0035] Therefore, when the sliding friction detection, i.e., the surface flatness detection, is performed, the winding roller winds the flat light-transmitting film that has been wound onto the laying roller. When the flat light-transmitting film is wound onto the laying roller, the scraper scrapes the side of the flat light-transmitting film that is attached to the mold surface, so as to reduce the residues of foreign matters or dust, thereby reducing the influence on the subsequent light-transmitting degree detection.

[0036] Meanwhile, the cleaning holes arranged on the cleaning rod are used to extrude cleaning liquid when the flat light-transmitting film is wound, so that the flat light-transmitting film is cleaned by the cleaning liquid and the scraper, thereby improving the detection accuracy and detection efficiency of the flat light-transmitting film on the smoothness.

[0037] Optionally, the cleaning rod is provided with a conveying blade, the conveying blade is in the form of a spiral, the conveying blade is attached to the inner wall of the cleaning rod, a first rotating gear and a second rotating gear ring are rotatably arranged on the cleaning rod, the first rotating gear and the second rotating gear ring are coaxially arranged and engaged with each other, and an adjusting gear is arranged on the winding roller and engaged with the second rotating gear ring.

[0038] When the second rotating gear ring rotates in the forward direction, the second rotating gear ring is engaged with the first rotating gear.

[0039] When the second rotating gear ring reversely rotates, the second rotating gear ring is not engaged with the first rotating gear.

[0040] By adopting the above technical scheme, when the cleaning wheel rotates against the mold surface, the winding roller and the laying roller are driven to rotate forward, thereby driving the second rotating gear ring to rotate forward. At this time, the second rotating gear ring is engaged with the first rotating gear. At this time, the planar light-transmitting film that has been wound on the winding roller is wound on the laying roller at the same time, and the conveying blade rotates to extrude the cleaning liquid through the cleaning holes on the cleaning rod, thereby realizing cleaning of the planar light-transmitting film, facilitating subsequent reuse of the planar light-transmitting film.

[0041] When the smoothness is detected, the planar light-transmitting film that has been wound on the laying roller is wound on the laying roller at this time. At this time, the second rotating gear ring reversely rotates, and the second rotating gear ring is not engaged with the first rotating gear at this time. Therefore, the cleaning liquid is not easy to flow out from the cleaning roller on the cleaning rod at this time, reducing the waste of the cleaning liquid.

[0042] Optionally, the scraper is obliquely arranged towards the direction of the winding roller, the scraper is rotationally arranged on the cleaning rod, and a restoring member is arranged at the rotation shaft of the scraper, and the restoring member is used to make the scraper always adhere to the planar light-transmitting film.

[0043] By adopting the above technical scheme, when the planar light-transmitting film is wound on the laying roller, the scraper is always obliquely arranged towards the direction of the winding roller at this time, so that the cleaning liquid is uniformly distributed on the planar light-transmitting film, thereby realizing efficient cleaning of the planar light-transmitting film.

[0044] In summary, the present application has at least one of the following beneficial technical effects:

[0045] 1. When the surface quality of the lost mold needs to be detected, the first detection rod is rotated to the position corresponding to the mold surface by the switching piece at this time, and the detection wheel is in close contact with the mold surface at this time. When the detection wheel rotates to the mold surface for detection, the mark hole is directly opposite the mold surface at this time, and the adjusting piece enlarges the opening of the mark hole at this time. The mark ball protrudes from the mark hole under the action of the elastic restoring force at this time. Since the mark ball is flush with the surface of the detection wheel in the normal state, if the mold surface has a protrusion, the protrusion will be in close contact with the mark ball, causing the mark ball to slide towards the mark hole. Since the width of the mark ball is consistent with the opening of the mark hole, the mark hole is opened when the mark ball slides towards the mark hole, so that the mark liquid in the detection wheel flows out of the mark hole and marks the protrusion. At the same time, if the mold surface has a depression, the mark ball will protrude from the surface of the detection wheel based on the elastic force at this time, and the mark hole will also be opened at this time, so that the mark liquid flows out of the mark hole and marks the depression.

[0046] 2. By setting the adjusting plate that blocks the multiple mark holes in the same group, when the detection wheel rotates to a group of mark holes corresponding to the mold surface, the adjusting plate slides to the position of opening the same group of mark holes corresponding to the mold surface, so as to realize the detection and marking of the flatness in the width direction of the mold.

[0047] 3. By setting the laying roller, winding roller and planar light transmission film, when the smoothness of the mold surface is not enough, bubbles will be generated when the plastic film is attached to the mold surface, so that the light emitted by the light emitting piece is not easily reflected directly back to the photosensitive sensor. At the same time, when the smoothness of the mold surface is poor, the dense bubbles cause the plastic film to produce diffuse reflection at this time, and the photosensitive sensor receives poor light signals at this time, so as to obtain the smoothness of the mold surface at this time. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is the overall structure schematic diagram of a lost mold surface quality detection device according to an embodiment of the present application;

[0049] Figure 2 It is the connection structure schematic diagram of the rolling friction detection assembly;

[0050] Figure 3 It is the connection structure schematic diagram of the rolling friction detection assembly from another perspective;

[0051] Figure 4 It is the connection structure schematic diagram of the sliding friction assembly;

[0052] Figure 5 It is the connection structure schematic diagram of the sliding friction detection assembly from another perspective.

[0053] Fig. 1 is a frame; 11, a workbench; 12, a mounting rod; 13, a fixing assembly; 14, a switching piece; 141, a switching block; 15, a limiting structure; 2, a rolling friction detection assembly; 21, a first detection rod; 22, a detection wheel; 23, a mark hole; 24, a mark ball; 25, a mark spring; 26, an adjusting piece; 261, an adjusting piece; 262, an adjusting spring; 263, an adjusting block; 3, a sliding friction detection assembly; 31, a second detection rod; 32, a laying piece; 321, a laying roller; 322, a winding roller; 323, a planar light transmission film; 324, a pressing rod; 33, an illuminating piece; 34, a photosensitive sensor; 35, a display screen; 4, a cleaning rod; 41, a cleaning hole; 42, a liquid storage tank; 43, a scraper; 431, a return spring; 44, a conveying blade; 45, a first rotating gear; 46, a second rotating gear ring; 47, an adjusting gear. DETAILED DESCRIPTION

[0054] The following will be described in detail with reference to the accompanying drawings Figures 1-5 The application is further described in detail.

[0055] The embodiment of the application discloses a lost foam cutting surface quality detection device. Figure 1 A lost foam cutting surface quality detection device comprises a vertically arranged frame 1 and a horizontally fixed workbench 11 on the frame 1, the workbench 11 is used for placing a mold, and the workbench 11 is also provided with a fixing assembly 13 for fixing the position of the mold, the fixing assembly 13 in the application comprises clamping blocks fixed on the workbench 11, the clamping blocks are provided in two groups, the two groups of clamping blocks are oppositely arranged, and the two groups of clamping blocks clamp and fix the mold, meanwhile, the frame 1 is provided with a mounting rod 12 which is arranged in a lifting and sliding mode, the sliding direction of the mounting rod 12 is horizontal and coincides with the length direction of the workbench 11, and the mounting rod 12 is also provided with a rolling friction detection assembly 2 and a sliding friction detection assembly 3 for detecting the surface quality of the surface of the mold.

[0056] Refer to Figure 1 and Figure 2The rolling friction detection assembly 2 comprises 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 stores a marking liquid. A plurality of marking holes 23 are arranged on the surface of the detection wheel 22. Each group of the marking holes 23 comprises a plurality of marking holes 23 arranged along the axial direction of the detection wheel 22. A marking ball 24 is elastically arranged in the detection wheel 22. The sliding direction of the marking ball 24 is consistent with the radial direction of the detection wheel 22. The marking ball 24 is flush with the outer wall of the detection wheel 22. The diameter of the marking hole 23 is consistent with the diameter of the marking ball 24. An adjusting member 26 is arranged on the outer side of the detection wheel 22.

[0057] With reference to Figure 2 and Figure 3 The adjusting member 26 comprises an adjusting plate 261 slidably arranged on the outer wall of the marking hole 23. The adjusting plate 261 is elastically arranged on the detection wheel 22. An adjusting spring 262 is fixedly connected to the adjusting plate 261. The sliding direction of the adjusting plate 261 is consistent with the extending direction of the outer wall of the detection wheel 22. When the detection wheel 22 is attached to the surface of the mold, 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. The detection wheel 22 is rotatably connected to the side wall of the first detection rod 21. One side of an adjusting block 263 is movably arranged in the detection wheel 22. The adjusting block 263 is movably attached to the side of the adjusting plate 261. The side of the adjusting plate 261 movably attached to the adjusting block 263 is inclined. When the adjusting block 263 rotates towards the detection wheel 22, the adjusting block 263 abuts against the adjusting plate 261 to slide the adjusting plate 261 to open the marking hole 23, so that the marking ball 24 protrudes from the marking hole 23.

[0058] When the surface of the mold has a protrusion, the protrusion abuts against the marking ball 24 to make the marking ball 24 slide towards the marking hole 23. Since the width of the marking hole 23 is consistent with the diameter of the marking ball 24, the marking hole 23 is opened when the marking ball 24 slides towards the marking hole 23, so that the marking liquid in the detection wheel 22 flows out of the marking hole 23 to mark the protrusion.

[0059] When the surface of the mold has a depression, the marking ball 24 protrudes from the surface of the detection wheel 22 under the elastic force. The marking hole 23 is also opened, so that the marking liquid flows out of the marking hole 23 to mark the depression.

[0060] The marking ball 24 is elastically arranged in the detection wheel 22, the detection wheel 22 is provided with the mounting rod 12, the marking ball 24 is fixedly connected with the marking spring 25, the other end of the marking spring 25 is fixedly connected with the mounting rod 12, and the mounting block is arranged on the marking ball 24. The adjusting rod is arranged on the first detection rod 21, the adjusting rod is provided with the mounting groove, the mounting groove is arranged in the direction away from the shaft center of the detection wheel 22, and the mounting block is slidably arranged in the mounting groove. When the detection wheel 22 is separated from the surface of the mold, the mounting block slides in the direction of the shaft center of the detection wheel 22 under the limitation of the mounting groove, so that the marking ball 24 slides in the direction of the shaft center of the detection wheel 22, the marking ball 24 is located in the marking hole 23, and the leakage of the marking liquid is reduced, so that the surface quality detection is facilitated next time.

[0061] When the surface of the lost mold is detected by the marking ball 24, the concave degree and the flatness of the surface of the mold can be easily judged, the surface finish is also a problem that determines the surface quality of the entire casting in subsequent casting, and the surface finish of the lost mold is not easy to judge by the rolling friction, so with reference to Figure 4 and Figure 5 The sliding friction assembly comprises a second detection rod 31 arranged on the mounting rod 12, a laying piece 32 arranged on the second detection rod 31, an illumination piece 33 arranged on the second detection rod 31, and a photosensitive sensor 34 arranged on the second detection rod 31. The rack 1 is also provided with a display screen 35, and the display screen 35 is electrically connected with the photosensitive sensor 34.

[0062] The illumination piece 33 is arranged in the direction of the surface of the mold, the photosensitive sensor 34 is arranged in the direction of the surface of the mold, and the photosensitive sensor 34 is symmetrically arranged with the illumination piece 33.

[0063] The laying piece 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 is in close contact with the surface of the mold, the laying roller 321 is provided with a planar light-transmitting film 323, the planar light-transmitting film 323 is in close contact with the surface of the mold, the second detection rod 31 is also provided with a pressing rod 324, the pressing rod 324 is in close contact with the side of the planar light-transmitting film 323 away from the surface of the mold, and the laying roller 321 and the winding roller 322 are provided with a sliding friction detection gap. The pressing rod 324 is arranged between the laying roller 321 and the winding roller 322, and the illumination piece 33 and the photosensitive sensor 34 are also arranged between the laying roller 321 and the winding roller 322.

[0064] After the plastic film is laid on the surface of the mold by the laying member 32, the plastic film and the mold are completely attached to each other by the molecular force between the plastic film and the mold when the surface of the mold is smooth enough. At this time, the plastic film on the surface of the mold is irradiated by the irradiation member 33, and the light reflected by the plastic film is received by the photosensitive sensor 34. The intensity of the light received by the photosensitive sensor 34 is used to determine the smoothness of the surface of the mold.

[0065] When the smoothness of the surface of the mold is not enough, air bubbles will be generated when the plastic film is attached to the surface of the mold, so that the light emitted by the irradiation member 33 is not easily reflected directly to the photosensitive sensor 34. At the same time, when the smoothness of the surface of the mold is poor, the air bubbles make the plastic film produce diffuse reflection. At this time, the light signal received by the photosensitive sensor 34 is poor, so that the smoothness of the surface of the mold at this time is determined.

[0066] In order to facilitate the switching of the surface quality detection of the surface of the mold, the rack 1 is provided with a switching member 14. The switching member 14 includes a switching block 141 rotatably arranged on the mounting rod 12. The switching block 141 is in the shape of "L". The first detection rod 21 and the second detection rod 31 are respectively fixedly connected to the two ends of the switching block 141. The first detection block and the second detection block are arranged at an angle of 90°. The mounting rod 12 is provided with a power member for providing rotary power for the switching block 141. The output end of the power member is connected to the switching rod. In the present application, the power member is a motor. The switching block 141 is further provided with a limiting structure 15 for stably corresponding the first detection rod 21 / second detection rod 31 to the surface of the mold.

[0067] In the present application, the limiting structure 15 is a switching hole arranged through the switching block 141 and the mounting rod 12. The switching hole is in the shape of a polygon. A positioning block is slidably arranged through the switching block 141. The positioning block is attached to the inner circumferential wall of the switching hole.

[0068] At the same time, when the first detection rod 21 corresponds to the surface of the mold and the detection wheel 22 is attached to the surface of the mold and rotates, the winding roller 322 winds the planar light-transmitting film 323 that has been wound to the laying roller 321.

[0069] The second detection rod 31 is provided with a cleaning rod 4 on one side of the winding roller 322. The cleaning rod 4 is attached to the planar light-transmitting film 323 on the winding roller 322. The side of the cleaning rod 4 close to the winding roller 322 is densely provided with cleaning holes 41. The second detection rod 31 is further provided with a liquid storage tank 42. The liquid storage tank 42 stores cleaning liquid. The cleaning rod 4 is in communication with the liquid storage tank 42. The second detection rod 31 is further provided with a scraper 43. The scraper 43 is attached to the surface of the planar light-transmitting film 323. When the winding roller 322 winds the planar light-transmitting film 323 to the laying roller 321, the cleaning holes 41 periodically extrude cleaning liquid to the planar light-transmitting film 323.

[0070] The cleaning rod 4 is provided with a conveying blade 44 in a spiral shape, the conveying blade 44 is attached to the inner wall of the cleaning rod 4, and the winding roller 322 is provided with a first rotating gear 45 and a second rotating gear ring 46, the first rotating gear 45 and the second rotating gear ring are coaxially arranged and movably engaged, the cleaning rod 4 is provided with an adjusting gear 47, the adjusting gear 47 is connected with the second adjusting gear ring through a belt drive, when the second rotating gear ring 46 rotates forward, the second rotating gear ring 46 is engaged with the first rotating gear 45, and when the second rotating gear ring 46 reversely rotates, the second rotating gear ring 46 is not engaged with the first rotating gear 45.

[0071] The scraper 43 is rotatably arranged on the cleaning rod 4, the shaft of the scraper 43 is provided with a restoring member, the restoring member is a restoring spring 431 in the application, and the scraper 43 is obliquely arranged towards the direction of the winding roller 322.

[0072] The application also discloses a detection method for cutting surface quality of an evaporative pattern, which comprises the following steps:

[0073] S1, first, the mold surface is cleaned, and the mold to be detected is placed on the workbench 11 and stably positioned on the workbench 11 through the fixing assembly 13;

[0074] S2, the mounting rod 12 is lowered to a position where the detection wheel 22 is attached to the mold surface through an external power source, at this time, the mounting rod 12 slides along the length direction of the mold, so that the detection wheel 22 rolls on the mold surface, and the flatness of the mold surface is detected;

[0075] S3, the second detection rod 31 is rotated to a position corresponding to the mold surface by rotating the switching block 141, at this time, the laying roller 321 attaches the planar light-transmitting film 323 to the mold surface, and the light-sensitive sensor 34 judges the smoothness of the mold surface according to the reflected light irradiated on the planar light-transmitting film 323 by the light irradiating member 33;

[0076] S4, when the flatness of the next mold is detected, at this time, the winding roller 322 and the laying roller 321 are synchronously rotated when the detection wheel 22 rotates on the mold surface, so that the planar light-transmitting film 323 on the winding roller 322 is wound on the laying roller 321;

[0077] S5, when the planar light-transmitting film 323 is wound on the laying roller 321 on the winding roller 322, the surface of the planar light-transmitting film 323 is cleaned, so that the planar light-transmitting film 323 is reused.

[0078] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A device for detecting the surface quality of lost foam casting, characterized in that: The device includes a frame, a worktable mounted on the frame, and a mounting rod that is lifted and slidably mounted on the frame. The worktable is used to place the mold and is equipped with a fixing component for clamping and fixing the mold. The mounting rod is also equipped with a rolling friction detection component and a sliding friction detection component for surface quality detection of the mold. The rolling friction detection component and the sliding friction detection component correspond to the surface of the mold. The mounting rod is also equipped with a switching component for switching between the rolling friction detection component and the sliding friction detection component. The rolling friction detection assembly includes a first detection rod mounted on a mounting rod and a detection wheel rotatably mounted on the first detection rod. The detection wheel contains a marking liquid, and multiple sets of marking holes are opened on the surface of the detection wheel. The multiple sets of marking holes are spaced apart along the circumference of the detection wheel. A marking ball is elastically slidably disposed inside the detection wheel and is located at the marking hole. Both the marking ball and the detection wheel are in movable contact with the mold surface, 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 adjustment component is slidably disposed on the outside of the marking hole of the detection wheel to increase the opening of the marking hole. When the detection wheel rotates to the position where the corresponding marker ball is in contact with the mold surface, the adjusting component will enlarge the opening at the corresponding marker hole, so that the marker ball moves out of the marker hole. A set of marking holes includes a plurality of marking holes spaced apart along the axis of the detection wheel. The adjusting member includes an adjusting plate slidably disposed on the outer peripheral wall of the marking holes. The adjusting plate is elastically slidably disposed on the detection wheel. The sliding direction of the adjusting plate is consistent with the extension direction of the outer peripheral wall of the detection wheel. The first detection rod is movably perpendicular to the worktable. An adjusting block is rotatably connected to the outer side 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 that is movably attached to the adjusting block is inclined. The adjusting block is movably protruding from the outer peripheral wall of the detection wheel, and the side of the adjusting block that protrudes from the outer peripheral wall of the detection wheel is movably attached to the first detection rod.

2. The device for detecting the surface quality of lost foam cutting according to claim 1, characterized in that: The sliding friction detection assembly includes a second detection rod disposed on the mounting rod, a laying component disposed on the second detection rod, a light-emitting component disposed on the second detection rod, and a photosensitive sensor disposed on the second detection rod. The frame is provided with a display screen, and the display screen is electrically connected to the photosensitive sensor. The light source is arranged at an angle toward the surface of the mold, and the photosensitive sensor is also arranged at an angle toward the surface of the mold, with the photosensitive sensor and the light source arranged symmetrically.

3. The device for detecting the surface quality of lost foam cutting according to claim 2, characterized in that: The laying component includes a laying roller rotatably mounted on the second detection rod and a take-up roller rotatably mounted on the second detection rod. The laying roller is in contact with the mold surface, and a planar light-transmitting film is wound around the laying roller. The planar light-transmitting film is laid in contact with the mold surface. The second detection rod is also provided with a clamping rod, which is movably in contact with the side of the planar light-transmitting film away from the mold surface. A gap for sliding friction detection is left between the laying roller and the take-up roller. The clamping rod is located between the laying roller and the take-up roller. The light-emitting element and the photosensitive sensor are also located between the laying roller and the take-up roller.

4. The device for detecting the surface quality of lost foam cutting according to claim 3, characterized in that: The switching component includes a switching block rotatably mounted on the mounting rod. The first detection rod and the second detection rod are both mounted on the switching block, and the first detection rod and the second detection rod are arranged at an angle. The mounting rod is provided with a power component that provides rotational power to the switching block. The output end of the power component is connected to the switching block. The switching block is also provided with a limiting structure for stably positioning the first detection rod / second detection rod in relation to the mold surface. Furthermore, when the first detection rod corresponds to the mold surface and the detection wheel rotates in contact with the mold surface, the take-up roller wraps the already wound planar transparent film onto the laying roller.

5. The device for detecting the surface quality of lost foam cutting according to claim 4, characterized in that: A cleaning rod is provided on one side of the take-up roller. The cleaning rod is in contact with the flat transparent film on the take-up roller. The cleaning rod is densely covered with cleaning holes. The second detection rod is provided with a liquid storage tank containing cleaning liquid. The cleaning rod is connected to the liquid storage tank. The cleaning rod is provided with a scraper that is in contact with the surface of the flat transparent film. As the take-up roller winds the planar transparent film onto the laying roller, the cleaning holes periodically squeeze cleaning liquid onto the planar transparent film.

6. The device for detecting the surface quality of lost foam cutting according to claim 5, characterized in that: The cleaning rod is provided with conveying blades, which are spiral in shape and fit against the inner wall of the cleaning rod. A first rotating gear and a second rotating gear ring are rotatably arranged on the cleaning rod. The first rotating gear and the second rotating gear ring are coaxially arranged and meshed. The take-up roller is provided with an adjusting gear, which meshes with the second rotating gear ring. When the second rotating gear ring rotates in the forward direction, the second rotating gear ring meshes with the first rotating gear; When the second rotating gear ring rotates in the opposite direction, the second rotating gear ring is not engaged with the first rotating gear.

7. The device for detecting the surface quality of lost foam cutting according to claim 6, characterized in that: The scraper is inclined toward the winding roller, the scraper is rotatably mounted on the cleaning rod, and a return member is provided at the rotating shaft of the scraper. The return member is used to keep the scraper in contact with the planar light-transmitting film at all times.

8. A method for detecting the surface quality of lost foam cutting, applied to the lost foam cutting surface quality detection device described in claim 7, characterized in that, Includes the following steps: S1. First, clean the surface of the mold and place the mold to be tested on the worktable and use the fixing components to make the mold stable on the worktable. S2, by using an external power source, the mounting rod is lowered to the position where the detection wheel is in contact with the mold surface. At this time, the mounting rod slides along the length of the mold, so that the detection wheel rolls in contact with the mold surface, thereby realizing the detection of the flatness of the mold surface; S3, by rotating the switching block, the second detection rod is rotated to the position corresponding to the mold surface. At this time, the laying roller will attach the planar light-transmitting film to the mold surface, and the light will be irradiated onto the planar light-transmitting film on the mold surface by the light-emitting element. The smoothness of the mold surface is judged according to the light reflected back received by the photosensitive sensor. S4, when the flatness of the next mold is checked, the detection wheel rotates in contact with the mold surface, and the take-up roller and the laying roller rotate synchronously, so that the planar light-transmitting film on the take-up roller is wound onto the laying roller; S5, when the planar light-transmitting film is wound from the take-up roller onto the laying roller, the surface of the planar light-transmitting film is cleaned, thereby enabling the planar light-transmitting film to be reused.

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