Thickness detection device for mold

Abstract

The invention discloses a thickness detection device for a mold, and the device comprises a support, a detection platform is disposed above the support, and the detection platform is provided with a detection assembly. The detection assembly comprises two supporting seats which are symmetrically arranged, a sliding guide rail is fixed between the two supporting seats, a detector is connected in the sliding guide rail in a sliding mode, the detector is vertically arranged and is arranged between the upper die base and the lower die base, and two conical detection heads are connected to the two ends of the detector in a sliding mode; a rolling wheel at the tip end of the detection head is connected with a ball, a third supporting column is arranged in the detection head, one end of the third supporting column is located in the direction opposite to the ball and fixed, first sliding plates are fixed to the other end of the third supporting column, and a laser transmitter and a laser receiver are installed on the two first sliding plates respectively; the laser receiver measures the distance between the two sliding plates I after receiving the laser; the device solves the problem that a current die thickness process is tedious, and the surface of a workpiece cannot be subjected to secondary treatment in real time.

Description

Technical Field

[0001] The invention belongs to the technical field of mold manufacturing and processing, and particularly relates to a thickness detection device for a mold. Background Art

[0002] In the field of mold manufacturing and processing, the uniformity of the thickness of the molded workpiece is one of the key indicators to measure the quality of mold processing. Uneven thickness of molded workpieces may cause stress concentration, insufficient strength and other problems during use, affecting the overall performance and service life of the product. Therefore, in the mold production process, it is of great practical significance to accurately detect the thickness of the molded workpiece and perform corresponding treatment on the workpiece surface according to the test results to ensure that the workpiece thickness meets the design requirements.

[0003] At present, most of the existing mold thickness detection devices on the market have some limitations. Traditional thickness detection methods, such as manual measurement using tools such as calipers, are not only inefficient, but the measurement accuracy is easily affected by human factors, and it is difficult to meet the detection needs of large-scale, high-precision mold production. Although some automated detection equipment has improved the detection efficiency to a certain extent, its functions are relatively simple and can only perform simple measurements on the thickness of the workpiece, and cannot perform real-time processing on the surface of the workpiece with uneven thickness.

[0004] In addition, for some mold application scenarios that require extremely high workpiece surface quality, even if the uneven thickness of the workpiece is detected, other special equipment is still needed to grind and fill the workpiece surface, which increases the complexity and cost of the production process. Therefore, the development of a mold thickness detection device that integrates thickness detection and surface treatment functions has become a technical problem that needs to be solved urgently in the mold manufacturing industry.

[0005] In order to solve the above problems, a mold thickness detection device is proposed to solve the problem that the current mold thickness process is cumbersome and cannot perform secondary processing on the workpiece surface in real time. Summary of the invention

[0006] The purpose of the present invention is to provide a thickness detection device for a mold to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A thickness detection device for a mold, comprising a bracket, a detection platform is installed above the bracket, and a detection component is installed on the detection platform; The detection assembly comprises two symmetrically arranged support seats, a sliding guide rail is fixed between the two support seats, a detector is slidably connected in the sliding guide rail, the detector is placed vertically, the detector is between the upper die seat and the lower die seat, and two conical detection heads are slidably connected at both ends of the detector; A ball is connected to the tip roller of the detection head. A third support column is arranged inside the detection head. One end of the third support column is located in the opposite direction of the ball and is fixed, and the other end is fixed with a first sliding plate. A laser emitter and a laser receiver are respectively installed on the two first sliding plates. After the laser receiver receives the laser, it measures the distance between the two first sliding plates. The first sliding plate is slidably connected to the inner wall of the detector. A first spring is fixed on the end face of the first sliding plate close to the circular groove. The other end of the first spring is fixed with a second limiting block. One side of the second limiting block is fixed to the inner wall of the detector, and the other side is in contact with the third support column. A circular mounting block is installed in the center of the ball of the detection head. A push rod is fixed inside the circular mounting block, and the output end of the push rod is fixed with a first motor. A number of grinding rods are arranged in an array based on the center of the ball of the circular mounting block. A fixed cylinder is fixed on the outer diameter of the grinding rod. The fixed cylinder is located in the middle of the grinding rod and a second spring is sleeved on the outside. One end of the second spring is in contact with the outer diameter of the circular mounting block, and the other end is fixed with a second sliding block. The second sliding block penetrates the outer surface of the ball and has the same curvature as the outer surface of the ball. One end of a number of the grinding rods is located inside the circular mounting block, and the other end penetrates the second sliding block and is in contact with its outer surface. When the ball rotates, a number of grinding rods all pass under the output end of the first motor during the rotation. When grinding is required, the push rod pushes the first motor so that the output end of the motor contacts the grinding rod and drives the grinding rod to rotate.

[0008] Further description of the present invention: The inside of the third support column of the detection head is hollow, and a metal wire channel is fixed inside the third support column. The other end of the metal wire channel penetrates the outer shell to form a metal wire inlet. A liquid tank is opened inside the detection head. A first channel is opened between the liquid tank and the metal wire channel. A heating device is fixed inside the first channel. A second channel is opened in the center of the heating device, and the second channel communicates with the liquid tank.

[0009] Further description of the present invention: Grooves are opened on the surface of the circular groove of the detection head. A fifth channel is opened inside the detection head. The fifth channel communicates the liquid tank with the circular groove. A third channel is opened on the inner wall of the ball. The third channel penetrates the shell of the ball and is respectively in contact with the adjacent second sliding blocks. A fourth channel is opened on the outer surface of the second sliding block. The fourth channel penetrates the inside of the second sliding block and is in contact with the adjacent ball. The third channel is on the sliding path of the fourth channel. The fourth channel is communicated with or closed to the third channel by the longitudinal movement of the second sliding block.

[0010] The present invention further illustrates that a telescopic protective shell is installed between the circular mounting block and the second sliding block. One end of the telescopic protective shell is fixed to the second sliding block, and the other end is slidably connected to the circular mounting block. The telescopic protective shell is located outside the second spring.

[0011] The present invention further illustrates that a pulley is installed inside the outer shell. The pulley passes through the third support column and the wire channel and fits with the wire to push the wire to move.

[0012] The present invention further illustrates that a top plate is fixed above the detection platform through the first support column. A first cylinder is fixed on the top plate. The cylinder output end of the first cylinder passes through the top plate and is fixed with an upper die base.

[0013] The present invention further illustrates that a second cylinder is arranged below the detection platform. The second cylinder is fixed to the bracket. The output end of the second cylinder is fixed with a first support plate. A plurality of second support columns are fixed on the first support plate. The second support columns pass through above the detection platform and are fixed with a lower die base.

[0014] The present invention further illustrates that third cylinders are fixed on both sides of the detection platform. The output ends of the two third cylinders are fixed to the detection assembly. Two sliding grooves are formed on the detection platform. The two sliding grooves are centrosymmetric with respect to the center of the detection platform. The two support seats are respectively slidably connected in the two sliding grooves.

[0015] The present invention further illustrates a detection method for a thickness detection device for a mold. Step 1: Start the third cylinder to drive the detection assembly to move horizontally, and start the sliding guide rail to make the first sliding block with a detector move vertically to the edge of the mold; the first cylinder drives the upper die base and the mold downward. When the upper die base mold contacts the detector, continue to press down until the detector contacts the mold on the lower die base. Obtain the distance a between the two first sliding plates through the laser emitter and receiver, and define it as the initial position of the upper die base. Then, the first cylinder moves the upper die base upward, and the third cylinder moves the detection assembly away from the upper die base. Step 2: Fix the mold on the upper die base and the lower die base, place the blank in the mold on the lower die base, and the first cylinder drives the upper die base downward, and the upper and lower die base molds apply pressure to the blank to shape it. Step 3: When it is necessary to detect the thickness of the workpiece after shaping, start the third cylinder and the sliding guide rail to move the detector to the edge of the formed workpiece; the first cylinder drives the upper die base and the mold downward. When the upper die base mold contacts the detector, continue to press down until the detector contacts the formed workpiece on the lower die base. Obtain the distance b between the two first sliding plates through the laser. The thickness of the workpiece is b - a; start the third cylinder and the sliding guide rail to make the ball roll between the mold and the workpiece, record the change of b - a and calculate the average thickness.

[0016] The present invention further illustrates that the specific content of Step 3 includes When the thickness is uneven: Start the heating device to melt the metal wire into a liquid state and let it enter the liquid tank. Apply electromagnetic force to prevent solidification and give it magnetism. When the slider two on the ball slides to the installation groove position and slides in the opposite direction of the circular installation block under the action of the spring three, when the channel three and the channel four are connected, the liquid metal enters the inside of the ball from the channel five, the channel three and the channel four; When the thickness is lower than the required thickness: The slider two slides downward under the elastic force of the spring two. When the channel three and the channel four are connected, the liquid metal in the ball flows out and converges towards the middle under the action of magnetism; When the thickness is higher than the required thickness: The slider two slides upward, and start the motor one to drive the grinding rod to rotate and grind the surface of the workpiece.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, the detection component is driven to move horizontally by the cylinder three and combined with the vertical movement realized by the sliding guide rail, which can flexibly cover different positions and sizes of the mold, and is especially suitable for the edge detection of workpieces with complex shapes. The non-contact measurement system composed of the laser emitter and the receiver avoids mechanical contact errors, and the difference calculation method between the initial distance a and the distance b after forming significantly improves the thickness detection accuracy; Through the original liquid metal filling mechanism, when the surface thickness of the workpiece is insufficient, the heating device melts the metal wire to form liquid metal, and drives it to flow directionally to the defect area through the electromagnetic coil. The liquid metal automatically converges and fills the depression under the action of the magnetic field, solving the problem of uneven thickness caused by local shrinkage of the traditional mold.

[0018] When it is detected that the thickness of the workpiece exceeds the standard, the motor inside the ball drives the grinding rod to extend, and the contact pressure is maintained through the pre-tightening force of the spring two to realize in-situ grinding and correction. The grinding rod array design can adapt to different curvature surfaces, and the telescopic protective shell effectively prevents metal chips from damaging precision components and improves the grinding efficiency.

[0019] The conical detection head cooperates with the ball structure, which not only ensures the fitting degree between the detector and the mold, but also reduces the contact damage to the workpiece. The elastic connection between the internal support column three and the sliding plate one enables the detection head to adapt to the height change of the mold, and the detection pressure is constant. Brief Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the embodiment of the present invention; Figure 2 is the front view of the overall structure of the embodiment of the present invention; Figure 3 is the side view of the overall structure of the embodiment of the present invention; Figure 4 Schematic structural diagram of the thickness detection component according to an embodiment of the present invention; Figure 5 Schematic structural diagram of the detector according to an embodiment of the present invention; Figure 6 is an embodiment of the present invention Figure 5 Schematic enlarged structural diagram of area A; Figure 7 is an embodiment of the present invention Figure 5 Schematic enlarged structural diagram of area B; Figure 8 is an embodiment of the present invention Figure 7 Schematic enlarged structural diagram of area C; In the figure: 1, bracket; 2, detection platform; 201, sliding groove; 3, detection component; 301, support base; 302, sliding guide rail; 303, detector; 3031, outer shell; 3032, first limiting block; 3033, detection head; 3034, circular groove; 3035, ball; 30351, circular mounting block; 30352, push rod; 30353, first motor; 30354, grinding rod; 30355, fixed cylinder; 30356, second spring; 30357, second sliding block; 30358, telescopic protective shell; 30359, liquid tank; 3036, third support column; 30361, wire channel; 3037, first sliding plate; 3038, first spring; 3039, second limiting block; 304, first sliding block; 305, first channel; 306, heating device; 3061, second channel; 307, third channel; 308, fourth channel; 309, belt pulley; 310, fifth channel; 4, top plate; 401, first support column; 5, first cylinder; 6, upper die base; 7, second cylinder; 701, first support plate; 702, second support column; 8, lower die base; 9, third cylinder. Detailed implementation manners

[0021] The technical solution of the present invention will be further described in detail and non - restrictively below in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-8 , the embodiments of the present invention provide a technical solution: a thickness detection device for a mold, including a bracket 1.

[0023] As Figures 1-2As shown, in some embodiments, a detection platform 2 is installed above the bracket 1, a detection component 3 is installed on the detection platform 2, a top plate 4 is fixed above the detection platform 2 by a first support column 401, a first cylinder 5 is fixed on the top plate 4, and a cylinder output end of the first cylinder 5 penetrates through the top plate 4 and is fixed with an upper die base 6.

[0024] As Figure 3 shown, in some embodiments, a second cylinder 7 is arranged below the detection platform 2, the second cylinder 7 is fixed to the bracket 1, an output end of the second cylinder 7 is fixed with a first support plate 701, a plurality of second support columns 702 are fixed on the first support plate 701, the second support columns 702 penetrate through the detection platform 2 and upper ends of the second support columns 702 are fixed with a lower die base 8.

[0025] As Figure 4 shown, in some embodiments, third cylinders 9 are fixed on both sides of the detection platform 2, output ends of the two third cylinders 9 are fixed to the detection component 3, and are used for driving the detection component 3 to move horizontally.

[0026] Two sliding grooves 201 are formed in the detection platform 2, and the two sliding grooves 201 are centrosymmetric with respect to the center of the detection platform 2. The detection component 3 is respectively slidably connected in the two sliding grooves 201. The detection component 3 includes two support seats 301. The two support seats 301 are respectively located in the two sliding grooves 201 and are fixed to the output ends of the third cylinders 9. A sliding guide rail 302 is fixed between the two support seats 301. The sliding guide rail 302 is located between the upper die base 6 and the lower die base 8. A detector 303 is slidably connected in the sliding guide rail 302 through a first sliding block 304. The detector 303 is slidably connected to the first sliding block 304. The detector 303 achieves the effects of longitudinal and horizontal sliding through the sliding guide rail 302 and the first sliding block 304.

[0027] As Figure 5 shown, in some embodiments, the detector 303 includes a housing 3031. Two detection heads 3033 are slidably connected to an outer diameter of the housing 3031. The two detection heads 3033 are conical. The detector 303 is placed vertically. The two detection heads 3033 are respectively located at two ends of the housing 3031. Limit blocks 3032 are fixed at two ends of the housing 3031, and the detection heads 3033 are prevented from detaching from the housing 3031 during the sliding process of the detection heads 3033 on the housing 3031 through the limit blocks 3032.

[0028] As Figure 6As shown, in some embodiments, a circular groove 3034 is provided at the conical tip of the detection head 3033. A ball 3035 is connected to a roller within the circular groove 3034. A cavity is formed inside the detection head 3033. A third support column 3036 is provided inside the detection head 3033. One end of the third support column 3036 is located in the direction opposite to the ball 3035 and is fixed, and the other end is fixed with a first sliding plate 3037. The first sliding plate 3037 is slidably connected to the inner wall of the housing 3031. A first spring 3038 is fixed to the end face of the first sliding plate 3037 close to the circular groove 3034. The other end of the first spring 3038 is fixed with a second limiting block 3039. One side of the second limiting block 3039 is fixed to the inner wall of the housing 3031, and the other side is in contact with the third support column 3036.

[0029] As Figure 7 shown, in some embodiments, the third support column 3036 inside the detection head 3033 is hollow. A wire groove 30361 is fixed inside the third support column 3036. One end of the wire groove 30361 is fixed to the detection head 3033, and the other end of the wire groove 30361 penetrates through the housing 3031 to form a wire inlet. The wire groove 30361 is used for inserting a wire.

[0030] As Figures 7-8 shown, in some embodiments, the ball 3035 is hollow inside and forms a spherical shell outside. A circular mounting block 30351 is installed at the center of the ball 3035. The circular mounting block 30351 is hollow inside. A push rod 30352 is fixed inside the circular mounting block 30351. The output end of the push rod 30352 is fixed with a first motor 30353. When the push rod 30352 extends, the output end of the first motor 30353 is connected to a grinding rod 30354. A number of grinding rods 30354 are arrayed based on the center of the ball of the circular mounting block 30351. A fixing cylinder 30355 is fixed to the outer diameter of the grinding rod 30354. The fixing cylinder 30355 is located in the middle of the grinding rod 30354. A second spring 30356 is sleeved on the outer diameter of the fixing cylinder 30355. One end of the second spring 30356 is in contact with the outer diameter of the circular mounting block 30351, and the other end is fixed with a second sliding block 30357. The second sliding block 30357 penetrates through the outer surface of the ball 3035. The outer surface of the second sliding block 30357 has the same curvature as the outer surface of the ball 3035. One ends of a number of the grinding rods 30354 are located inside the circular mounting block 30351, and the other ends penetrate through the second sliding block 30357 and are in contact with its outer surface.

[0031] It should be noted that when the ball 3035 rotates, several of the grinding rods 30354 pass below the output end of the first motor 30353 during the rotation. When grinding is required, the push rod 30352 pushes the first motor 30353 to bring the motor output end into contact with the grinding rod 30354, driving the grinding rod 30354 to rotate.

[0032] As Figures 7-8 shown, in some embodiments, a telescopic protective shell 30358 is installed between the circular mounting block 30351 and the second sliding block 30357. One end of the telescopic protective shell 30358 is fixed to the second sliding block 30357, and the other end is slidably connected to the circular mounting block 30351. The telescopic protective shell 30358 is located outside the second spring 30356 and is used to protect the second spring 30356.

[0033] As Figures 7-8 shown, in some embodiments, a liquid tank 30359 is formed inside the detection head 3033 for the flow of liquid metal. A first channel 305 is formed between the liquid tank 30359 and the wire groove 30361. A heating device 306 is fixed inside the first channel 305 for fusing the metal wire. A second channel 3061 is formed at the center of the heating device 306 and is in communication with the liquid tank 30359.

[0034] As Figures 7-8 shown, in some embodiments, a groove is formed on the surface of the circular groove 3034 of the detection head 3033. A fifth channel 310 is formed inside the detection head 3033 to communicate the liquid tank 30359 with the circular groove 3034. A third channel 307 is formed on the inner wall of the ball 3035, passing through the shell of the ball 3035 to contact the adjacent second sliding block 30357 respectively. A fourth channel 308 is formed on the outer surface of the second sliding block 30357, passing through the interior of the second sliding block 30357 to contact the adjacent ball 3035. The third channel 307 is located on the sliding path of the fourth channel 308. In the initial state, the third channel 307 is not in communication with the fourth channel 308. When the second sliding block 30357 encounters a depression on the surface of the workpiece, the second sliding block 30357 extends to bring the fourth channel 308 into communication with the third channel 307. When the second sliding block 30357 moves longitudinally until the third channel 307 is in communication with the fourth channel 308, the liquid metal fills the surface of the workpiece in sequence through the fifth channel 310 - the third channel 307 - the fourth channel 308.

[0035] AsFigure 5 and Figure 7 As shown in Figure 7 , in some embodiments, a pulley 309 is installed inside the housing 3031. The pulley 309 passes through the support column three 3036 and the wire channel 30361 and is in contact with the wire, for pushing the wire to move.

[0036] It should be supplemented that: an electromagnetic coil is built in the liquid tank 30359. After being electrified, a magnetic field is generated, enabling the liquid metal to flow directionally in the ball 3035.

[0037] It should be supplemented that: a laser emitter and a laser receiver are respectively installed on the sliding plate one 3037 inside the upper and lower detection heads 3033. The initial distance a and the distance b after forming are measured by the laser emitter and the laser receiver. The positions of the laser emitter and the laser receiver correspond longitudinally. Since the inside of the housing 3031 is hollow, when the laser emitter emits laser, the laser receiver can receive the laser to measure the distance between the two sliding plates one 3037.

[0038] Working principle: By starting the cylinder three 9 to drive the detection component 3 to move horizontally, and by starting the sliding guide 302, the sliding block one 304 drives the detector 303 to move longitudinally until the detector 303 moves to the edge of the mold.

[0039] By driving the upper mold base 6 and the mold to move downward through the cylinder one 5, when the mold on the upper mold base 6 contacts the detector 303, by continuing to press down, the detector 303 contacts the mold fixed on the lower mold base 8. The distance between the two sliding plates one 3037 can be obtained as a through the laser emitter and the laser receiver, and the position of the upper mold base 6 at this time is defined as the initial position.

[0040] By moving the upper mold base 6 upward through the cylinder one 5, and moving the detection component 3 away from the upper mold base 6 through the cylinder three 9.

[0041] Fix the mold on the upper mold base 6 and the lower mold base 8, place the blank in the mold on the lower mold base 8. By starting the cylinder one 5, the cylinder one 5 drives the upper mold base 6 to move downward, and the molds fixed on the upper mold base 6 and the lower mold base 8 apply pressure to the blank to make it take shape.

[0042] When thickness detection of the formed workpiece is required after shaping, by starting the cylinder three 9 to drive the detection component 3 to move horizontally, and by starting the sliding guide 302, the sliding block one 304 drives the detector 303 to move longitudinally until the detector 303 moves to the edge of the formed workpiece.

[0043] The upper die holder 6 and the mold are driven to move downward by the first cylinder 5. After the mold on the upper die holder 6 contacts the detector 303, by continuously pressing downward, the detector 303 contacts the formed workpiece on the mold fixed on the lower die holder 8. The distance between the two first sliding plates 3037 can be obtained by the laser emitter and the laser receiver as b, and the thickness of the formed workpiece at this time can be obtained as b - a.

[0044] The third cylinder 9 and the sliding guide 302 are started to make the ball 3035 roll between the mold and the workpiece, record the change of b - a, and calculate the thickness of each point of the workpiece.

[0045] When the surface thickness of the workpiece is uneven, the metal wire is placed into the metal wire inlet. After the metal wire enters the metal wire channel 30361, the heating device 306 is started. The heating device 306 melts the metal wire to form liquid metal. The melted metal wire enters the interior of the liquid tank 30359. Electromagnetism is introduced into the liquid tank 30359 to prevent the liquid metal from solidifying and give the liquid metal magnetism at the same time. When the second sliding block 30357 on the ball 3035 slides to the position of the groove, under the action of the second spring 30356, the second sliding block 30357 slides in the direction opposite to the circular mounting block 30351. When the third channel 307 and the fourth channel 308 are communicated, the liquid metal in the liquid tank 30359 enters the interior of the ball 3035 from the fifth channel 310 and the third channel 307.

[0046] When the thickness of the workpiece surface is lower than the required thickness, the second sliding block 30357 slides downward under the action of the elastic force of the second spring 30356. When the third channel 307 and the fourth channel 308 are communicated, the liquid metal in the ball 3035 flows out from the third channel 307 and the fourth channel 308, and the flowing-out liquid metal converges towards the middle under the action of magnetism.

[0047] When the thickness of the workpiece surface is higher than the required thickness, the second sliding block 30357 slides upward, and the first motor 30353 is started to drive the grinding rod 30354 to rotate and grind the workpiece surface.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thickness detection device for a mold, comprising a bracket, characterized in that: A detection platform is installed above the bracket, and a detection component is installed on the detection platform; The detection component includes two symmetrically arranged support seats. A sliding guide rail is fixed between the two support seats. A detector is slidably connected in the sliding guide rail. The detector is placed vertically. The detector is between the upper die holder and the lower die holder. Two conical detection heads are slidably connected to both ends of the detector; The tip of the detection head is roller-connected with a ball. A support column three is arranged inside the detection head. One end of the support column three is located in the opposite direction of the ball and is fixed. The other end is fixed with a sliding plate one. A laser emitter and a laser receiver are respectively installed on the two sliding plates one. After the laser receiver receives the laser, it measures the distance between the two sliding plates one; The sliding plate one is slidably connected with the inner wall of the detector. A spring one is fixed on the end surface of the sliding plate one close to the circular groove. The other end of the spring one is fixed with a limit block two. One side of the limit block two is fixed with the inner wall of the detector, and the other side is in contact with the support column three; A circular mounting block is installed in the center of the ball of the detection head. A push rod is fixed in the circular mounting block. The output end of the push rod is fixed with a motor one; A number of grinding rods are arrayed based on the center of the ball of the circular mounting block. A fixed cylinder is fixed on the outer diameter of the grinding rod. The fixed cylinder is located in the middle of the grinding rod and a spring two is sleeved outside; One end of the spring two is in contact with the outer diameter of the circular mounting block, and the other end is fixed with a sliding block two. The sliding block two penetrates the outer surface of the ball and has the same curvature as the outer surface of the ball; One end of several grinding rods is located inside the circular mounting block, and the other end penetrates the sliding block two and is in contact with its outer surface; When the ball rotates, several grinding rods all pass under the output end of the motor one during the rotation. When grinding is required, the push rod pushes the motor one to make the output end of the motor contact with the grinding rod and drive the grinding rod to rotate.

2. The thickness detection device for a mold according to claim 1, characterized in that: The support column three inside the detection head is hollow, and a metal wire channel is fixed inside the support column three; The other end of the metal wire channel penetrates the outer shell to form a metal wire inlet. A liquid groove is opened in the detection head. A channel one is opened between the liquid groove and the metal wire channel. A heating device is fixed inside the channel one. A channel two is opened in the center of the heating device. The channel two communicates with the liquid groove.

3. The thickness detection device for a mold according to claim 2, characterized in that: A groove is opened on the surface of the circular groove of the detection head. A channel five is opened in the detection head. The channel five communicates the liquid groove with the circular groove; A channel three is opened on the inner wall of the ball. The channel three penetrates the shell of the ball and is respectively in contact with the adjacent sliding block two. A channel four is opened on the outer surface of the sliding block two. The channel four penetrates the inside of the sliding block two and is in contact with the adjacent ball. The channel three is on the sliding path of the channel four. The channel four is communicated or closed with the channel three by the longitudinal movement of the sliding block two.

4. A thickness detection device for a mold according to claim 3, characterized in that: An expansion protection shell is installed between the circular mounting block and the sliding block two. One end of the expansion protection shell is fixed with the sliding block two, and the other end is slidably connected with the circular mounting block. The expansion protection shell is located outside the spring two.

5. The thickness detection device for a mold according to claim 4, characterized in that: A pulley is installed inside the outer shell. The pulley passes through the third support column and the wire channel and fits with the wire to push the wire to move.

6. The thickness detection device for a mold according to claim 5, characterized in that: Above the detection platform, a top plate is fixed by the first support column. A first cylinder is fixed on the top plate. The cylinder output end of the first cylinder passes through the top plate and is fixed with an upper die base.

7. An apparatus for detecting the thickness of a mold according to claim 6, characterized in that: A second cylinder is arranged below the detection platform. The second cylinder is fixed to the bracket. The output end of the second cylinder is fixed with a first support plate. A number of second support columns are fixed on the first support plate. The second support columns pass through above the detection platform and are fixed with a lower die base.

8. An apparatus for detecting the thickness of a mold according to claim 7, characterized in that: Third cylinders are fixed on both sides of the detection platform. The output ends of the two third cylinders are fixed to the detection assembly. Two sliding grooves are formed on the detection platform. The two sliding grooves are centrosymmetric with respect to the center of the detection platform. The two support seats are respectively slidably connected in the two sliding grooves.

9. The detection method of a thickness detection device for a mold according to any one of claims 1-8, characterized in that: Step 1: Start the third cylinder to drive the detection assembly to move horizontally, and start the sliding guide rail to make the slider with the detector move longitudinally to the edge of the mold; the first cylinder drives the upper die base and the mold downward. When the upper die base mold contacts the detector, continue to press down until the detector contacts the mold on the lower die base. Obtain the distance a between the two sliding plates through the laser emitter and receiver, and define it as the initial position of the upper die base. Then, the first cylinder moves the upper die base upward, and the third cylinder moves the detection assembly away from the upper die base; Step 2: Fix the mold on the upper die base and the lower die base, place the blank in the mold on the lower die base, and the first cylinder drives the upper die base downward, and the upper and lower die base molds apply pressure to the blank for shaping; Step 3: When it is necessary to detect the thickness of the workpiece after shaping, start the third cylinder and the sliding guide rail to move the detector to the edge of the formed workpiece; the first cylinder drives the upper die base and the mold downward. When the upper die base mold contacts the detector, continue to press down until the detector contacts the formed workpiece on the lower die base. Obtain the distance b between the two sliding plates through the laser. The thickness of the workpiece is b - a; Start the third cylinder and the sliding guide rail to make the ball roll between the mold and the workpiece, record the change of b - a and calculate the average thickness.

10. The detection method of a thickness detection device for a mold according to claim 9, characterized in that: The specific content of Step 3 includes: When the thickness is uneven: Start the heating device to melt the wire into a liquid state and enter the liquid tank. Apply electromagnetic force to prevent solidification and give magnetism; when the second slider on the ball slides to the installation groove position, under the action of the third spring, it slides in the opposite direction of the circular installation block. When the third channel and the fourth channel are connected, the liquid metal enters the inside of the ball from the fifth channel, the third channel and the fourth channel; When the thickness is lower than the required thickness: The second slider slides downward under the elastic force of the second spring. When the third channel and the fourth channel are connected, the liquid metal in the ball flows out and converges to the middle under the action of magnetism; When the thickness is higher than the required thickness: The second slider slides upward, and start the first motor to drive the grinding rod to rotate and grind the surface of the workpiece.

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