Die grinding equipment with multi-angle accurate grinding function

Abstract

The invention discloses mold grinding equipment with a multi-angle accurate grinding function, and relates to the technical field of grinding, the mold grinding equipment comprises a rack, a clamping mechanism, a moving mechanism, a grinding mechanism and a detection mechanism, the clamping mechanism is fixedly connected with the rack, the clamping mechanism is used for clamping a mold, the moving mechanism is slidably connected with the rack, and the grinding mechanism is used for grinding the mold. The moving mechanism is used for driving the grinding mechanism to move, the grinding mechanism is in fastening connection with the moving mechanism, and the detection mechanism is in fastening connection with the grinding mechanism and used for detecting the cavity depth of a mold; the moving mechanism can drive the grinding mechanism to sweep the position, needing to be ground, of the mold along a certain track so as to grind the mold, but the depths of cavities of the mold are inconsistent and have step surfaces with different depths, the depths of the different positions of the cavities of the mold are judged through the detection mechanism, the depth position of the grinding mechanism is adjusted, and the grinding efficiency is improved. And the mold cavity of the mold is polished in all directions.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, in particular to a mold grinding device with a multi-angle fine grinding function. Background Art

[0002] Grinding and polishing is a very important step in the mold making process. The surface roughness of the mold cavity is directly related to the surface finish of the injection molded product. It can also improve the corrosion resistance and wear resistance of the material surface, and facilitate subsequent injection molding processing, such as making plastic products easy to demold and reducing the production injection molding cycle. Therefore, with the increase in the requirements for the smoothness of the appearance of injection molded products, the requirements for mold grinding and polishing are also higher.

[0003] However, when existing mold grinding and polishing equipment is grinding the inside of a mold cavity with a stepped surface, it is necessary to first detect the depth of the cavity and then adjust the position of the grinding head. The process is complicated and the grinding efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to provide a mold grinding device with a multi-angle fine grinding function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the mold grinding equipment includes a frame, a clamping mechanism, a moving mechanism, a grinding mechanism and a detection mechanism, the clamping mechanism is tightly connected to the frame, the clamping mechanism is used to clamp the mold, the moving mechanism is slidably connected to the frame, the moving mechanism is used to drive the grinding mechanism to move, the grinding mechanism is tightly connected to the moving mechanism, the detection mechanism is tightly connected to the grinding mechanism, and the detection mechanism is used to detect the cavity depth of the mold.

[0006] The present invention is used for grinding the cavity of a mold, and the frame is used for providing a stable working environment for each mechanism. First, the mold to be ground is fixed on the frame by a clamping mechanism to prevent the mold body from shaking during the grinding process, and then the moving mechanism is started to drive the grinding mechanism to the position on the mold that needs to be ground. The moving mechanism can drive the grinding mechanism to sweep along a certain trajectory to the position of the mold that needs to be ground, thereby grinding the mold. However, the depth of the mold cavity is inconsistent, and there are step surfaces of different depths. The depth of different positions of the mold cavity is judged by a detection mechanism to adjust the depth position of the grinding mechanism, and the mold cavity is ground in all directions.

[0007] Furthermore, the moving mechanism includes a gantry, an electric slide, a rotating table and an adjusting electric cylinder. The frame is provided with a guide rail, the gantry is slidably connected to the guide rail, the gantry is provided with a guide section, the electric slide is slidably connected to the guide section, the rotating table is tightly connected to the electric slide, the output end of the rotating table is transmission connected to the adjusting electric cylinder, and the output end of the adjusting electric cylinder is transmission connected to the grinding mechanism.

[0008] The electric slide on the gantry and the guide section forms a two-axis mobile platform, which drives the grinding mechanism to sweep along a certain trajectory over the position of the mold that needs to be polished, and grinds the mold. The rotating table is used to adjust the grinding angle of the grinding mechanism to achieve multi-angle grinding. The adjusting electric cylinder is used to adjust the height of the grinding mechanism. Before grinding, the grinding mechanism is first moved to the upper surface of the mold by adjusting the electric cylinder, and the upper surface of the mold is used as the grinding reference surface. Then the detection mechanism is used to control the depth of the grinding mechanism extending into the mold cavity to grind the inside of the mold cavity.

[0009] Furthermore, the grinding mechanism includes a connecting part, an adjusting component, a grinding motor and a grinding head. The connecting part is fastened to the output end of the adjusting electric cylinder, one end of the adjusting component is fastened to the connecting part, and the other end of the adjusting component is fastened to the grinding motor. The adjusting component is used to adjust the position of the grinding motor, and the output end of the grinding motor is transmission-connected to the grinding head.

[0010] The connecting piece is used to connect the adjusting electric cylinder and the adjusting assembly, the adjusting assembly is used to adjust the height position of the grinding motor and the mold, the grinding motor is used to output torque to drive the grinding head to rotate, and the cavity surface of the mold is polished by the rotating grinding head.

[0011] Furthermore, the detection mechanism includes a laser source, a movable component, a rotating rod, a telescopic rod and a linkage component. The laser source is tightly connected to the connecting piece, the output end of the laser source is facing the mold, the movable component is tightly connected to the connecting piece, the movable component is located on the end of the connecting piece away from the laser source, the movable component is used to receive the light reflected from the surface of the mold by the laser source, the movable component is arranged in several groups on the connecting piece, several movable components are abutted against the rotating rod, the rotating rod is hinged to the connecting piece, one end of the telescopic rod is tightly connected to the rotating rod, the other end of the telescopic rod is hinged to the linkage component, and the linkage component is used to judge the cavity depth of the mold.

[0012] When the grinding head and the upper surface of the mold are in the same plane, that is, the grinding mechanism is on the grinding reference plane, the detection mechanism is started to detect the cavity depth of the mold. The laser source is arranged at an angle, so that the light emitted from the laser source will be reflected to the surface of the movable component when it is irradiated to the cavity surface of the mold; and according to the principle of light refraction, the deeper the depth of the cavity, the farther the position of the movable component irradiated by the reflected light is from the laser source. The irradiated movable component can drive the rotating rod to deflect upward along the hinge point, thereby driving the telescopic rod to deflect downward, and then driving the linkage component to move. The depth of the mold cavity can be determined by detecting the movement of the linkage component.

[0013] Furthermore, the movable component includes a photoresistor, a first electromagnet, a first repulsion magnet and a movable rod. The photoresistor is tightly connected to the connecting piece, the detection end of the photoresistor faces the mold, the connecting piece is provided with a movable groove, the first electromagnet is tightly connected to the movable groove, the first electromagnet is electrically connected to the photoresistor, the first repulsion magnet is slidably connected to the movable groove, the facing ends of the first repulsion magnet and the first electromagnet are the same magnetic poles, one end of the movable rod is tightly connected to the first repulsion magnet, and the other end of the movable rod passes through the connecting piece and abuts against the rotating rod.

[0014] When not being detected, the movable rod supports the rotating rod, and the rotating rod is in a horizontal state; when the reflected light is irradiated to a certain group of several movable components, the photoresistor in this group of movable components is irradiated by the light, the resistance value is reduced, and the current transmitted to the first electromagnet is increased. Under the action of magnetic force, the first repelling magnet is pushed to move upward along the movable groove, thereby driving the movable rod to move upward, and then driving the rotating rod abutting against the movable rod to deflect upward. Because the upward movement distance of the movable rod is certain, the farther the movable component is from the laser source, the greater the angle at which the rotating rod is pushed to deflect upward, and the greater the angle of deflection of the telescopic rod is, that is, the deeper the cavity depth of the mold, the greater the angle of deflection of the telescopic rod.

[0015] Furthermore, the linkage component includes a guide block, an iron core, a second repulsion magnet and a varistor, a guide groove and a detection groove are provided on the connecting part, the guide block is slidably connected to the guide groove, the telescopic rod is hinged to the guide block, the iron core is firmly connected to the guide block, the varistor is firmly connected to the inner wall of the detection groove, the second repulsion magnet abuts against the detection end of the varistor, a coil is wound on the detection groove, the iron core is inserted into the coil to form a second electromagnet, the facing ends of the second electromagnet and the second repulsion magnet are the same magnetic poles, and the varistor is electrically connected to the adjustment component.

[0016] The greater the pressure on the varistor, the smaller the resistance; the deeper the mold cavity depth, the greater the deflection angle of the telescopic rod, the longer the distance the guide block slides downward along the guide groove, the longer the distance the iron core is inserted into the coil, the stronger the magnetic force of the second electromagnet composed of the coil and the iron core, the greater the repulsive force on the second repulsive magnet, the greater the pressure transmitted to the varistor, and the smaller the resistance of the varistor; that is, the deeper the mold cavity depth, the smaller the resistance of the varistor.

[0017] Furthermore, the adjustment component includes a fixed part, an adjusting electromagnet, a movable electromagnet, a slider, a connecting rod and a supporting spring. The fixed part is tightly connected to the connecting part, the adjusting electromagnet is tightly connected to the inner cavity of the fixed part, the movable electromagnet is tightly connected to the slider, the facing ends of the movable electromagnet and the adjusting electromagnet are the same magnetic poles, the adjusting electromagnet and the movable electromagnet are electrically connected to the varistor, the slider is slidably connected to the inner cavity of the fixed part, one end of the connecting rod is tightly connected to the slider, the other end of the connecting rod is tightly connected to the grinding motor, and the supporting spring is sleeved on the connecting rod.

[0018] The fixing part is fixed on the connecting part to provide an installation basis for the adjusting component. The adjusting electromagnet, the movable electromagnet and the varistor form a circuit. Because the deeper the cavity depth of the mold, the smaller the resistance value of the varistor, the deeper the cavity depth of the mold, the greater the current transmitted to the adjusting electromagnet and the movable electromagnet, the greater the repulsive force on the movable electromagnet, which drives the slider to slide downward, the supporting spring is compressed, the length of the connecting rod extending out of the fixing part becomes longer, and the depth of the grinding motor extending into the mold cavity becomes deeper; that is, it realizes automatic adjustment of the distance that the grinding motor extends into the mold according to the cavity depth of the mold, thereby improving the grinding efficiency.

[0019] Furthermore, a vertical groove is provided in the inner cavity of the fixing piece, and the sliding block is slidably connected to the vertical groove.

[0020] In order to prevent the slider from relatively rotating in the inner cavity of the fixing member, the moving direction of the slider is limited by the vertical groove, and the slider can only move up and down along the vertical groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The electric slide on the gantry and the guide section forms a two-axis mobile platform, which drives the grinding mechanism to sweep along a certain trajectory over the position of the mold that needs to be polished, and grinds the mold. The rotating table is used to adjust the grinding angle of the grinding mechanism to achieve multi-angle grinding.

[0022] 2. When detecting the depth of the mold cavity, the light emitted from the laser source will be reflected to the surface of the movable component when it is irradiated to the surface of the mold cavity; the deeper the depth of the cavity, the farther the position of the movable component irradiated by the reflected light is from the laser source. When the reflected light irradiates a certain group of several movable components, the photoresistors in this group of movable components are irradiated by the light, the resistance value decreases, and the current transmitted to the first electromagnet increases. Under the action of magnetic force, the first repelling magnet will be pushed to move upward along the movable groove, thereby driving the movable rod to move upward, and then driving the rotating rod abutting the movable rod to deflect upward. Because the upward movement distance of the movable rod is certain, the movable component farther away from the laser source pushes the rotating rod to deflect upward at a greater angle. The greater the deflection angle of the telescopic rod, the longer the distance the guide block slides downward along the guide groove, the longer the distance the iron core is inserted into the coil, the stronger the magnetic force of the second electromagnet composed of the coil and the iron core, the greater the repulsive force on the second repulsive magnet, the greater the pressure transmitted to the varistor, the smaller the resistance of the varistor, the greater the current transmitted to the adjusting electromagnet and the movable electromagnet, the greater the repulsive force on the movable electromagnet, driving the slider to slide downward, the supporting spring is compressed, the length of the connecting rod extending out of the fixing part becomes longer, and the depth of the grinding motor extending into the mold cavity becomes deeper; that is, it realizes automatic adjustment of the distance the grinding motor extends into the mold according to the depth of the mold cavity, thereby automatically adjusting the position of the grinding head during grinding, thereby improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the mobile mechanism of the present invention; Figure 3 It is a schematic diagram of the grinding mechanism of the present invention; Figure 4 for Figure 3 A local enlarged view of point A; Figure 5 It is a schematic diagram of the detection mechanism of the present invention; Figure 6 It is a partial cross-sectional view of the detection mechanism; Figure 7 for Figure 6 A partial enlarged view of point B; Figure 8 for Figure 6 A partial enlarged view of point C; Fig. 9 It is a schematic diagram of the operation of the detection mechanism; Fig.10 Circuit diagram for regulating components and active components.

[0024] In the figure: 1-frame, 11-guide rail, 2-clamping mechanism, 3-moving mechanism, 31-gantry, 311-guide section, 32-electric slide, 33-rotating table, 34-adjusting electric cylinder, 4-grinding mechanism, 41-connecting piece, 411-movable slot, 412-guide slot, 413-detection slot, 42-adjusting component, 421-fixing piece, 4211-vertical slot, 422-adjusting electromagnet, 423-movable electromagnet, 424-slide Block, 425-connecting rod, 426-support spring, 43-grinding motor, 44-grinding head, 5-detection mechanism, 51-laser source, 52-movable component, 521-photoresistor, 522-first electromagnet, 523-first repulsive magnet, 524-movable rod, 53-rotating rod, 54-telescopic rod, 55-linkage component, 551-guide block, 552-iron core, 553-second repulsive magnet, 554-varistor, 555-coil. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example: Figure 1-Figure 10As shown, the present invention provides a technical solution for a mold grinding device with a multi-angle fine grinding function. The mold grinding device includes a frame 1, a clamping mechanism 2, a moving mechanism 3, a grinding mechanism 4 and a detection mechanism 5. The clamping mechanism 2 is tightly connected to the frame 1, and the clamping mechanism 2 is used to clamp the mold. The moving mechanism 3 is slidably connected to the frame 1, and the moving mechanism 3 is used to drive the grinding mechanism 4 to move. The grinding mechanism 4 is tightly connected to the moving mechanism 3, and the detection mechanism 5 is tightly connected to the grinding mechanism 4. The detection mechanism 5 is used to detect the cavity depth of the mold.

[0027] The present invention is used for grinding the cavity of a mold. The frame 1 is used to provide a stable working environment for each mechanism. First, the mold to be ground is fixed on the frame 1 by the clamping mechanism 2 to prevent the mold body from shaking during the grinding process. Then the moving mechanism 3 is started to drive the grinding mechanism 4 to the position on the mold that needs to be ground. The moving mechanism 3 can drive the grinding mechanism 4 to sweep the position of the mold that needs to be ground along a certain trajectory, thereby grinding the mold. However, the depth of the mold cavity is inconsistent, and there are step surfaces of different depths. The depth of different positions of the mold cavity is judged by the detection mechanism 5 to adjust the depth position of the grinding mechanism 4, and the mold cavity is ground in all directions.

[0028] The moving mechanism 3 includes a gantry 31, an electric slide 32, a rotating table 33 and an adjusting electric cylinder 34. A guide rail 11 is provided on the frame 1. The gantry 31 is slidably connected to the guide rail 11. A guide section 311 is provided on the gantry 31. The electric slide 32 is slidably connected to the guide section 311. The rotating table 33 is firmly connected to the electric slide 32. The output end of the rotating table 33 is transmission-connected to the adjusting electric cylinder 34. The output end of the adjusting electric cylinder 34 is transmission-connected to the grinding mechanism 4.

[0029] The gantry 31 and the electric slide 32 on the guide section 311 form a two-axis mobile platform, thereby driving the grinding mechanism 4 to scan the position of the mold that needs to be polished along a certain trajectory to polish the mold. The rotating table 33 is used to adjust the grinding angle of the grinding mechanism 4 to achieve multi-angle grinding. The adjusting electric cylinder 34 is used to adjust the height of the grinding mechanism 4. Before grinding, the grinding mechanism 4 is first moved to the upper surface of the mold by adjusting the electric cylinder 34, and the upper surface of the mold is used as the grinding reference surface. Then, the depth of the grinding mechanism 4 extending into the mold cavity is controlled by the detection mechanism 5 to grind the inside of the mold cavity.

[0030] The grinding mechanism 4 includes a connecting piece 41, an adjusting component 42, a grinding motor 43 and a grinding head 44. The connecting piece 41 is fastened to the output end of the adjusting electric cylinder 34, one end of the adjusting component 42 is fastened to the connecting piece 41, and the other end of the adjusting component 42 is fastened to the grinding motor 43. The adjusting component 42 is used to adjust the position of the grinding motor 43, and the output end of the grinding motor 43 is transmission-connected to the grinding head 44.

[0031] The connecting piece 41 is used to connect the adjusting electric cylinder 34 and the adjusting component 42. The adjusting component 42 is used to adjust the height position of the grinding motor 43 and the mold. The grinding motor 43 is used to output torque to drive the grinding head 44 to rotate, and the rotating grinding head 44 is used to grind the cavity surface of the mold.

[0032] The detection mechanism 5 includes a laser source 51, a movable component 52, a rotating rod 53, a telescopic rod 54 and a linkage component 55. The laser source 51 is tightly connected to the connecting piece 41, and the output end of the laser source 51 faces the mold. The movable component 52 is tightly connected to the connecting piece 41. The movable component 52 is located on the connecting piece 41 at an end away from the laser source 51. The movable component 52 is used to receive the light reflected from the surface of the mold by the laser source 51. Several groups of movable components 52 are arranged on the connecting piece 41. Several movable components 52 are abutted against the rotating rod 53. The rotating rod 53 is hinged to the connecting piece 41. One end of the telescopic rod 54 is tightly connected to the rotating rod 53, and the other end of the telescopic rod 54 is hinged to the linkage component 55. The linkage component 55 is used to judge the cavity depth of the mold.

[0033] When the grinding head 44 is in the same plane as the upper surface of the mold, that is, the grinding mechanism 4 is on the grinding reference plane, the detection mechanism 5 is started to detect the cavity depth of the mold. The laser source 51 is arranged at an angle, so that the light emitted from the laser source 51 will be reflected to the surface of the movable component 52 when it is irradiated to the cavity surface of the mold; and according to the principle of light refraction, the deeper the depth of the cavity, the farther the position of the movable component 52 irradiated by the reflected light is from the laser source 51, and the irradiated movable component 52 can drive the rotating rod 53 to deflect upward along the hinge point, thereby driving the telescopic rod 54 to deflect downward, and then driving the linkage component 55 to move. By detecting the movement of the linkage component 55, the depth of the mold cavity can be determined.

[0034] The movable component 52 includes a photoresistor 521, a first electromagnet 522, a first repulsion magnet 523 and a movable rod 524. The photoresistor 521 is tightly connected to the connecting piece 41, and the detection end of the photoresistor 521 faces the mold. The connecting piece 41 is provided with a movable groove 411. The first electromagnet 522 is tightly connected to the movable groove 411. The first electromagnet 522 is electrically connected to the photoresistor 521. The first repulsion magnet 523 is slidably connected to the movable groove 411. The facing ends of the first repulsion magnet 523 and the first electromagnet 522 are the same magnetic poles. One end of the movable rod 524 is tightly connected to the first repulsion magnet 523, and the other end of the movable rod 524 passes through the connecting piece 41 and abuts against the rotating rod 53.

[0035] When not detecting, the movable rod 524 supports the rotating rod 53, and the rotating rod 53 is in a horizontal state; when the reflected light is irradiated to a certain group of the plurality of movable components 52, the photoresistor 521 in this group of movable components 52 is irradiated with the light, the resistance value is reduced, and the current transmitted to the first electromagnet 522 is increased. Under the action of the magnetic force, the first repelling magnet 523 is pushed to move upward along the movable groove 411, thereby driving the movable rod 524 to move upward, and then driving the rotating rod 53 abutting against the movable rod 524 to deflect upward. Because the upward movement distance of the movable rod 524 is certain, the farther the movable component 52 is from the laser source 51, the greater the angle at which the rotating rod 53 is pushed to deflect upward, and the greater the angle of deflection of the telescopic rod 54 is, that is, the deeper the depth of the mold cavity, the greater the angle of deflection of the telescopic rod 54.

[0036] The linkage assembly 55 includes a guide block 551, an iron core 552, a second repulsion magnet 553 and a varistor 554. The connecting piece 41 is provided with a guide groove 412 and a detection groove 413. The guide block 551 is slidably connected to the guide groove 412. The telescopic rod 54 is hinged to the guide block 551. The iron core 552 is firmly connected to the guide block 551. The varistor 554 is firmly connected to the inner wall of the detection groove 413. The second repulsion magnet 553 abuts against the detection end of the varistor 554. A coil 555 is wound around the detection groove 413. The iron core 552 is inserted into the coil 555 to form a second electromagnet. The facing ends of the second electromagnet and the second repulsion magnet 553 are the same magnetic poles. The varistor 554 is electrically connected to the adjustment assembly 42.

[0037] The greater the pressure on the varistor 554, the smaller the resistance; and the deeper the cavity depth of the mold, the greater the deflection angle of the telescopic rod 54, the longer the distance that the guide block 551 slides downward along the guide groove 412, the longer the distance that the iron core 552 is inserted into the coil 555, the stronger the magnetic force of the second electromagnet composed of the coil 555 and the iron core 552, the greater the repulsive force on the second repulsive magnet 553, the greater the pressure transmitted to the varistor 554, and the smaller the resistance of the varistor 554; that is, the deeper the cavity depth of the mold, the smaller the resistance of the varistor 554.

[0038] The adjusting assembly 42 includes a fixing part 421, an adjusting electromagnet 422, a movable electromagnet 423, a slider 424, a connecting rod 425 and a supporting spring 426. The fixing part 421 is tightly connected to the connecting part 41, the adjusting electromagnet 422 is tightly connected to the inner cavity of the fixing part 421, the movable electromagnet 423 is tightly connected to the slider 424, the facing ends of the movable electromagnet 423 and the adjusting electromagnet 422 are the same magnetic poles, the adjusting electromagnet 422 and the movable electromagnet 423 are electrically connected to the varistor 554, the slider 424 is slidably connected to the inner cavity of the fixing part 421, one end of the connecting rod 425 is tightly connected to the slider 424, the other end of the connecting rod 425 is tightly connected to the grinding motor 43, and the supporting spring 426 is sleeved on the connecting rod 425.

[0039] The fixing part 421 is fixed on the connecting part 41 to provide an installation basis for the adjusting component 42. The adjusting electromagnet 422, the movable electromagnet 423 and the varistor 554 form a circuit. Because the deeper the cavity depth of the mold, the smaller the resistance of the varistor 554, the deeper the cavity depth of the mold, the greater the current transmitted to the adjusting electromagnet 422 and the movable electromagnet 423, and the greater the repulsive force on the movable electromagnet 423, which drives the slider 424 to slide downward, and the supporting spring 426 is compressed. The length of the connecting rod 425 extending out of the fixing part 421 becomes longer, and the depth of the grinding motor 43 extending into the mold cavity becomes deeper; that is, it is realized that the distance that the grinding motor 43 extends into the mold is automatically adjusted according to the cavity depth of the mold, thereby improving the grinding efficiency.

[0040] The inner cavity of the fixing member 421 is provided with a vertical groove 4211 , and the sliding block 424 is slidably connected to the vertical groove 4211 .

[0041] In order to prevent the slider 424 from relatively rotating in the inner cavity of the fixing member 421 , the moving direction of the slider 424 is limited by the vertical groove 4211 , and the slider 424 can only move up and down along the vertical groove 4211 .

[0042] The working principle of the present invention is as follows: when detecting the depth of the mold cavity, the light emitted from the laser source 51 will be reflected to the surface of the movable component 52 when irradiating the surface of the mold cavity; and according to the principle of light refraction, the deeper the depth of the cavity, the farther the position of the movable component 52 irradiated by the reflected light is from the laser source 51. When the reflected light irradiates a certain group of several movable components 52, the photoresistor 521 in this group of movable components 52 is irradiated by the light, the resistance value is reduced, and the current transmitted to the first electromagnet 522 is increased. Under the action of the magnetic force, the first repelling magnet 523 will be pushed to move upward along the movable groove 411, thereby driving the movable rod 524 to move upward, and then driving the rotating rod 53 abutting against the movable rod 524 to deflect upward. Because the upward movement distance of the movable rod 524 is certain, the movable component 52 that is farther away from the laser source 51 pushes the rotating rod 53 to deflect upward. The larger the angle, the greater the deflection angle of the telescopic rod 54, that is, the deeper the cavity depth of the mold, the greater the deflection angle of the telescopic rod 54, the longer the distance that the guide block 551 slides downward along the guide groove 412, the longer the distance that the iron core 552 is inserted into the coil 555, the stronger the magnetic force of the second electromagnet composed of the coil 555 and the iron core 552, the greater the repulsive force on the second repulsive magnet 553, the greater the pressure transmitted to the varistor 554, the smaller the resistance of the varistor 554, the greater the current transmitted to the adjusting electromagnet 422 and the movable electromagnet 423, the greater the repulsive force on the movable electromagnet 423, the slider 424 is driven to slide downward, the support spring 426 is compressed, the length of the connecting rod 425 extending out of the fixing part 421 becomes longer, and the depth of the grinding motor 43 extending into the mold cavity is deeper; that is, it is realized that the distance of the grinding motor 43 extending into the mold is automatically adjusted according to the cavity depth of the mold.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A mold grinding device with multi-angle fine grinding function, characterized in that: The mold polishing device comprises a frame (1), a clamping mechanism (2), a moving mechanism (3), a polishing mechanism (4) and a detection mechanism (5); the clamping mechanism (2) is tightly connected to the frame (1); the clamping mechanism (2) is used to clamp the mold; the moving mechanism (3) is slidably connected to the frame (1); the moving mechanism (3) is used to drive the polishing mechanism (4) to move; the polishing mechanism (4) is tightly connected to the moving mechanism (3); the detection mechanism (5) is tightly connected to the polishing mechanism (4); and the detection mechanism (5) is used to detect the depth of the mold cavity; The moving mechanism (3) comprises an adjusting electric cylinder (34), and the adjusting electric cylinder (34) is used to adjust the height of the grinding mechanism (4); The grinding mechanism (4) comprises a connecting piece (41); The detection mechanism (5) comprises a telescopic rod (54) and a linkage assembly (55), wherein the linkage assembly (55) is used to determine the cavity depth of the mold; The linkage assembly (55) comprises a guide block (551), an iron core (552), a second repulsive magnet (553) and a varistor (554); the connecting member (41) is provided with a guide groove (412) and a detection groove (413); the guide block (551) is slidably connected to the guide groove (412); the telescopic rod (54) is hinged to the guide block (551); the iron core (552) is firmly connected to the guide block (551); the varistor (554) is firmly connected to the inner wall of the detection groove (413); the second repulsive magnet (553) abuts against the detection end of the varistor (554); a coil (555) is wound around the detection groove (413); the iron core (552) is inserted into the coil (555) to form a second electromagnet; the facing ends of the second electromagnet and the second repulsive magnet (553) are the same magnetic poles; and the varistor (554) is electrically connected to the adjustment assembly (42).

2. The mold grinding equipment with multi-angle fine grinding function according to claim 1 is characterized in that: The moving mechanism (3) further comprises a gantry (31), an electric slide (32) and a rotating table (33); the frame (1) is provided with a guide rail (11); the gantry (31) is slidably connected to the guide rail (11); the gantry (31) is provided with a guide section (311); the electric slide (32) is slidably connected to the guide section (311); the rotating table (33) is firmly connected to the electric slide (32); the output end of the rotating table (33) is transmission-connected to an adjusting electric cylinder (34); and the output end of the adjusting electric cylinder (34) is transmission-connected to a grinding mechanism (4).

3. The mold grinding equipment with multi-angle fine grinding function according to claim 2 is characterized in that: The grinding mechanism (4) further comprises an adjusting component (42), a grinding motor (43) and a grinding head (44); the connecting piece (41) is tightly connected to the output end of the adjusting electric cylinder (34); one end of the adjusting component (42) is tightly connected to the connecting piece (41); the other end of the adjusting component (42) is tightly connected to the grinding motor (43); the adjusting component (42) is used to adjust the position of the grinding motor (43); and the output end of the grinding motor (43) is drivingly connected to the grinding head (44).

4. The mold grinding equipment with multi-angle fine grinding function according to claim 3 is characterized in that: The detection mechanism (5) further comprises a laser source (51), a movable component (52) and a rotating rod (53); the laser source (51) is tightly connected to the connecting member (41); the output end of the laser source (51) faces the mold; the movable component (52) is tightly connected to the connecting member (41); the movable component (52) is located on the end of the connecting member (41) away from the laser source (51); the movable component (52) is used to receive light reflected from the surface of the mold by the laser source (51); a plurality of groups of movable components (52) are arranged on the connecting member (41); a plurality of movable components (52) are in contact with the rotating rod (53); the rotating rod (53) is hinged to the connecting member (41); one end of the telescopic rod (54) is tightly connected to the rotating rod (53); and the other end of the telescopic rod (54) is hinged to the linkage component (55).

5. The mold grinding device with multi-angle fine grinding function according to claim 4 is characterized in that: The movable component (52) comprises a photoresistor (521), a first electromagnet (522), a first repulsive magnet (523) and a movable rod (524); the photoresistor (521) is tightly connected to the connecting piece (41); the detection end of the photoresistor (521) faces the mold; a movable groove (411) is provided on the connecting piece (41); the first electromagnet (522) is tightly connected to the movable groove (411); the first electromagnet (522) is electrically connected to the photoresistor (521); the first repulsive magnet (523) is slidably connected to the movable groove (411); the facing ends of the first repulsive magnet (523) and the first electromagnet (522) are magnetic poles of the same name; one end of the movable rod (524) is tightly connected to the first repulsive magnet (523); the other end of the movable rod (524) passes through the connecting piece (41) and abuts against the rotating rod (53).

6. The mold grinding equipment with multi-angle fine grinding function according to claim 1 is characterized in that: The adjustment assembly (42) comprises a fixing member (421), an adjustment electromagnet (422), a movable electromagnet (423), a slider (424), a connecting rod (425) and a supporting spring (426); the fixing member (421) is tightly connected to the connecting member (41); the adjustment electromagnet (422) is tightly connected to the inner cavity of the fixing member (421); the movable electromagnet (423) is tightly connected to the slider (424); the movable electromagnet (423) The ends facing the adjusting electromagnet (422) are magnetic poles of the same name; the adjusting electromagnet (422) and the movable electromagnet (423) are electrically connected to the varistor (554); the slider (424) is slidably connected to the inner cavity of the fixing member (421); one end of the connecting rod (425) is tightly connected to the slider (424); the other end of the connecting rod (425) is tightly connected to the grinding motor (43); and the supporting spring (426) is sleeved on the connecting rod (425).

7. The mold grinding device with multi-angle fine grinding function according to claim 6 is characterized in that: The inner cavity of the fixing member (421) is provided with a vertical groove (4211), and the sliding block (424) is slidably connected to the vertical groove (4211).

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