A detection device and method for producing car model toys

Abstract

The present invention simulates the production process of the car model and the size of the qualified vehicle model and performs accurate data statistics by setting a simulation detection system. At the same time, a car model shape detection device and a car model splicing detection device are set to perform qualified simulation before production and detection after production for different types of car models. The qualifiedness is detected by detecting different types of car models and comparing them with the simulation detection system. At the same time, the angle and length of the arc-shaped car model shell are defined to obtain the arc-shaped car model shell with the best shape, thereby increasing the aesthetic feeling of the toy vehicle.

Description

Technical Field

[0001] The invention relates to the field of toy car model manufacturing, and in particular to a detection device and method for producing car model toys. Background Art

[0002] In the current production of toy car models, the shell of the toy car model is mostly manufactured by stamping, and the various parts are assembled and spliced ​​after the shell is stamped. The Chinese utility model patent with publication number CN205718841U discloses a toy car assembly detection system; it detects whether the relative assembly positions of the body, hood, wheels and body of the assembled toy car are correct and whether the body is damaged through a CCD-based photoelectric detection device, and removes unqualified assembled toy cars to improve the product qualification rate and quality stability; essentially, the quality of the mold after the production of the car toy is inspected by a photoelectric detection device. The Chinese utility model patent with publication number CN209451299U discloses a modular fast-assembly toy car, which uses fast-assembly and detachable parts to connect the main components, and adopts a snap-on connection method for other secondary components without independent special connectors, thereby greatly reducing the difficulty of assembly and disassembly; the publication number CN220418296U The Chinese utility model patent discloses a detection device for automobile mold production control. The detection device is set to detect the finished automobile mold. When the finished automobile mold is unqualified, the sensor obtains the result, thereby triggering the starter. The starter turns on the forward and reverse motors, so that the threaded rod rotates and drives the moving block to move horizontally through the threaded engagement, and then drives the lever to move, and the unqualified automobile mold is moved to the other side of the conveyor belt. It can be seen that the finished product detection of toy cars in the prior art is very rough, and does not involve the detection of each assembly part of the toy car, nor does it involve specific detection content, and only involves the detection of the final assembled finished product. The detection results cannot correct the various processes in the production. As is known to all, in the process of stamping the shell of the toy car, the stamping speed and the temperature of the punch will cause the size deviation of the shell, and the assembly between the shells and the assembly with the wheels will also cause the assembly to be not tight enough due to size reasons. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a detection device and method for producing car model toys.

[0004] A detection device for the production of car model toys, comprising a simulation detection system, a stamping system, a car model shape detection device, a car model splicing detection device, a wheel assembly detection device, a wheel detection system, a car model surface detection device, and a comparison device; the simulation detection system inputs standard data on the shapes, splicing dimensions, and wheel assembly dimensions of different types of car models before the production of car model toys.

[0005] Furthermore, the stamping system includes a stamping base, a stamping table, a stamping head, a hydraulic cylinder, and an inflation tube; the stamping head is hollow, and an air inlet is provided on one side of the stamping head, and an inflation tube is connected through the air inlet; the interior of the stamping base is a cavity, which is provided with a heating chamber and a cooling chamber; the heating chamber is provided on the outside of the stamping base, and the heating chamber is filled with hot air flow, which is connected to the inflation tube through the air outlet, and is connected to the stamping head through the inflation tube.

[0006] Furthermore, the cooling chamber is arranged on the outside of the stamping base, and no cooling liquid is initially set in the cooling chamber. An annular cooling liquid chamber is arranged between the cooling chamber and the heating chamber, and the annular cooling liquid chamber is filled with cooling liquid. The cooling chamber and the annular cooling liquid chamber are separated by an inner wall, and a water inlet valve is arranged on the inner wall, and a water outlet valve is arranged in the cooling chamber.

[0007] Further; the vehicle model shape detection device includes a detection head Ⅰ of a moving rod and a vehicle model type Ⅰ; the vehicle model type Ⅰ includes an integrally formed front curved hood and a rear curved hood, the front curved hood includes a curved top surface Ⅰ, side walls, and a bottom edge; the rear curved hood includes a curved top surface Ⅱ, side walls, and a bottom edge; the side walls and bottom edges of the front and rear curved hoods are in the same range, the angle between the curved top surface Ⅰ and the bottom edge of the front curved hood is Ø1, the angle between the curved top surface Ⅱ and the bottom edge of the rear curved hood is Ø2, a spacing edge is provided between the curved top surface Ⅰ and the curved top surface Ⅱ, the spacing edge intersects vertically downward to the line of the bottom edge, dividing the bottom edge into the bottom edge Ⅰ on one side of the front curved hood and the bottom edge Ⅱ on one side of the rear curved hood, the length of the bottom edge Ⅰ is L1, the length of the bottom edge Ⅱ is L2, a wheel hole Ⅰ for mounting a wheel is provided on the bottom edge, and the total length of the bottom edge of the entire vehicle model is L u .

[0008] Furthermore; the car model splicing detection device includes a car model type II and a movable detection head II, the car model type II includes a front car body and a rear car body that are formed separately, the front car body and the rear car body are connected by a connecting screw, the bottom of the front car body is provided with a wheel hole II for installing a wheel, the rear wall of the front car body is provided with two screw holes I for installing the connecting screws, the bottom of the rear car body is provided with a wheel hole II for installing a wheel, and the front wall of the rear car body is provided with two screw holes II for installing the connecting screws.

[0009] Furthermore, the wheel detection system includes a wheel size detection device, a wheel hole Ⅰ size detection device and a wheel hole Ⅱ size detection device; two wheels are arranged on a rotating shaft, and the wheels are arranged as wheel Ⅰ installed on wheel hole Ⅰ and wheel Ⅱ installed on wheel hole Ⅱ.

[0010] Furthermore; the car model surface detection device includes a polishing table, the polishing device is arranged on the polishing table, the polishing device includes a polishing knife and a slide rail, the polishing knife is provided with a connecting hole that can slide on the slide rail, the polishing knife is arranged on the slide rail and moves on the polishing table along the slide rail; a burr detection rod is provided at one end of the slide rail, and the burr detection rod detects the burrs of the car model shell passing through the polishing table.

[0011] Furthermore, before processing the car model, the simulation detection system is first set up, and the standard values ​​of each detection device are input into the simulation detection device. The standard value of the angle between the arc top surface Ⅰ and the bottom edge Ⅰ of the front arc hood is set to Ø0, and the standard value of the angle between the arc top surface Ⅱ and the parallel line of the bottom edge Ⅱ of the rear arc hood is set to Ø t , the standard length of the base Ⅰ is L0, the standard length of the base Ⅱ is L t ; Set the standard total length of the bottom edge to L p , set K<(L0+L t ) / L p <1, and 0<L0 / (L0+L t )<0.22, set Ø t >Ø0,(L0·sinØ0) / (L t ·sinØ t )<Φ, where Φ is a fixed value, and ((L0+L t )·sinØ0) / ((L0+L t )·sinØ t )<Α, where Α is also a fixed value.

[0012] Furthermore, the initial value of the radius of the screw hole I in the car model splicing detection device is set to R1, the initial value of the radius of the screw hole II is set to R2, and the initial value is set to R1=R 2， Set the initial radius of the screw to R0, and the initial value to 0.9<(R0 / R1)<0.97.

[0013] Furthermore, the initial radius of the wheel is set to r0, the size standard value of wheel hole I on car model type I is set to r1, the size standard value of wheel hole II on car model type II is set to r2, the initial value is set to 0<(r2-r1) / r2<ε, where ε is a fixed value, and the initial standard value is set to 0.92<(r0 / r1)<0.95; the initial standard value is set to 0.8<(r0 / r2)<0.85.

[0014] Further, the smoothness of the initial standard car model shell is set to E.

[0015] Furthermore, the initial stamping speed of the ram of the stamping system, the temperature of the hot air flow filled into the ram in the initial heating chamber, and the temperature of the cooling liquid in the initial annular cooling liquid chamber are set; before stamping, the valve between the cooling chamber and the annular cooling liquid chamber is closed to make the cooling chamber empty; during stamping, the heated air flow is filled into the ram through the inflation tube to heat the ram, and at the same time, the ram is pressed down at the initial set speed to form the shell of the car model; after stamping, the valve is opened to allow the cooling liquid to enter the cooling chamber to cool the shell after stamping.

[0016] Furthermore, the car model shell after stamping is inspected. First, the type of the car model shell is identified. If the car model is type I after stamping, the shape detection device is used to detect the shape of the car model. First, the actual angle Ø1 after production between the arc top surface I and the bottom edge I of the front arc-shaped car cover and the actual angle Ø2 after production between the arc top surface II and the bottom edge II of the rear arc-shaped car cover are detected, as well as the length L1 of the bottom edge I and the length L2 of the bottom edge II after production. The total length of the bottom edge is L. When it is detected that When (L1+L2) / L=1, it is directly judged as an unqualified product. When it is detected that K<(L1+L2) / L<1, the next step of testing is carried out. When it is detected that 0<L1 / (L1+L2)<F, where F is any value between 0.22-0.3, the next step of testing is carried out. If L1 / (L1+L2)>0.3, it is judged as an unqualified product. If Ø1=Ø2, it is directly judged as an unqualified product. If Ø1<Ø 2， Then proceed to the next step of detection. When it is detected that (L1·sinØ1) / (L2·sinØ2)<Φ1, and ((L1+L2)·sinØ1) / ((L1+L2)·sinØ2)<Α1, and Φ1 and Α1 are compared with Φ and Α in the analog detection system through a comparison device, if they are within an appropriate error range, it is judged to be qualified.

[0017] Furthermore, if it is identified that the type of the car model after stamping is car model type II, the actual radius R3 of the screw hole I after production and the actual radius R4 of the screw hole II after production are detected through the car model splicing detection device. If it is detected that R3≠R4, the model is directly judged as unqualified. If R3=R4, the next step of judgment is started, and the detected R3 is compared with the production radius R of the screw, that is, the value of R / R3 is compared by the comparison device and the value in the simulation detection system, and it is judged to be qualified when it is within an appropriate error range.

[0018] Furthermore, the wheel assembly process is inspected by a wheel assembly inspection device. When it is detected that the size of wheel hole I on vehicle model type I is r3, the size of wheel hole II on vehicle model type II is r4, and the diameter of the wheel is r, and when it is detected that r3=r4, the model is directly judged to be unqualified. If the detected value of (r4-r3) / r ​​is compared with the value in the simulation detection system, if it is within an appropriate error range, the next step of detection is carried out. If it is detected that the values ​​of r / r3 and r / r4 are within an appropriate error range, it is judged to be qualified.

[0019] Furthermore, if it is detected that the smoothness of the car model shell is unqualified, it is determined to be an unqualified product.

[0020] Furthermore, if the proportion of unqualified products reaches a certain level, the stamping force and temperature of the stamping system are controlled by the control device.

[0021] Beneficial effects:

[0022] The present invention simulates the production process of the car model and the size of the qualified vehicle model and performs accurate data statistics by setting a simulation detection system. At the same time, a car model shape detection device and a car model splicing detection device are set to perform qualified simulation before production and detection after production for different types of car models. The qualifiedness is detected by detecting different types of car models and comparing them with the simulation detection system. At the same time, the angle and length of the arc-shaped car model shell are defined to obtain the arc-shaped car model shell with the best shape, thereby increasing the aesthetic feeling of the toy vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 Schematic diagram of the stamping system.

[0024] Attached Figure 2 This is a schematic diagram of car model type I.

[0025] Attached Figure 3 This is a schematic diagram of car model type II.

[0026] Attached Figure 4 Schematic diagram of the vehicle model surface detection device.

[0027] Attached Figure 5 A schematic diagram of a wheel.

[0028] Attached Figure 6 This is the side view of car model type I.

[0029] 1-stamping base, 2-inflating tube, 3-stamping head, 4-heating chamber, 5-cooling chamber, 6-annular cooling liquid chamber, 7-car model type Ⅰ, 8-detection head Ⅰ, 9-wheel, 10-car model type Ⅱ, 11-screw, 12-front car body, 13-rear car body, 14-polishing table, 15-slide rail, 16-polishing knife, 17-arc top surface Ⅱ, 18-arc top surface Ⅰ, 19-spacer edge, 20-bottom edge Ⅰ, 21-bottom edge Ⅱ, 22-burr detection rod. DETAILED DESCRIPTION

[0030] 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.

[0031] A detection device for the production of car model toys, comprising a simulation detection system, a stamping system, a car model shape detection device, a car model splicing detection device, a wheel assembly detection device, a wheel detection system, a car model surface detection device, and a comparison device; the simulation detection system inputs standard data of the shapes, splicing dimensions, and wheel assembly dimensions of different types of car models before the production of car model toys, and the stamping system comprises a stamping base 1, a stamping table, a stamping head 3, a hydraulic cylinder, and an inflation tube 2; the stamping head 3 is in a cavity shape, and an air inlet is provided on one side of the stamping head 3, and the inflation tube 2 is connected through the air inlet; the interior of the stamping base 1 is a cavity, which is provided with a heating chamber 4 and a cooling chamber 5; the heating chamber 4 is arranged on the outside of the stamping base 1, and the heating chamber 4 is filled with hot air flow, and the air inlet The air outlet is connected to an air charging pipe 2, and the air charging pipe 2 is connected to a punching head 3. A cooling chamber 5 is arranged on the outside of the punching base 1. No cooling liquid is initially arranged in the cooling chamber 5. An annular cooling liquid chamber 6 is arranged between the cooling chamber 5 and the heating chamber 4. The annular cooling liquid chamber 6 is filled with cooling liquid. The cooling chamber 5 and the annular cooling liquid chamber 6 are separated by an inner wall. A water inlet valve is arranged on the inner wall. A water outlet valve is arranged in the cooling chamber. The vehicle model shape detection device comprises a detection head Ⅰ of a moving rod and a vehicle model type Ⅰ (7); the vehicle model type Ⅰ (7) comprises an integrally formed front arc-shaped vehicle cover and a rear arc-shaped vehicle cover, the front arc-shaped vehicle cover comprises an arc-shaped top surface Ⅰ (18), side walls, and a bottom edge; the rear arc-shaped vehicle cover comprises an arc-shaped top surface Ⅱ (17), side walls, and a bottom edge; the front The side wall and the bottom edge of the rear curved car cover are in the same range, the angle between the curved top surface I (18) of the front curved car cover and the bottom edge is Ø1, the angle between the curved top surface II (17) of the rear curved car cover and the bottom edge is Ø2, a spacing edge (19) is provided between the curved top surface I (18) and the curved top surface II (17), the spacing edge (19) vertically intersects downward to the line of the bottom edge and divides the bottom edge into a bottom edge I (20) on one side of the front curved car cover and a bottom edge II (21) on one side of the rear curved car cover, the length of the bottom edge I (20) is L1, the length of the bottom edge II (21) is L2, a wheel hole I for mounting a wheel is provided on the bottom edge, and the total length of the bottom edge of the entire car model is L; the car model splicing detection device comprises a car model type II (10) and a movable detection head II, the car model Type II (10) comprises a front body (12) and a rear body (13) which are formed separately, the front body (12) and the rear body (13) being connected via a connecting screw (11), the bottom of the front body (12) being provided with a wheel hole II for mounting a wheel, the rear wall of the front body (12) being provided with two screw holes I for mounting the connecting screw, the bottom of the rear body (13) being provided with a wheel hole II for mounting a wheel, the front wall of the rear body being provided with two screw holes II for mounting the connecting screw (11); the wheel detection system comprising a wheel size detection device, a wheel hole I size detection device and a wheel hole II size detection device; two wheels being provided on a rotating shaft, the wheels being provided with a wheel I mounted on the wheel hole I and a wheel II mounted on the wheel hole II;The vehicle model surface detection device comprises a polishing table (14), a polishing device is arranged on the polishing table (14), the polishing device comprises a polishing knife (16) and a slide rail (15), the polishing knife (16) is provided with a connection hole that can slide on the slide rail (15), the polishing knife (16) is arranged on the slide rail (15) and moves on the polishing table (14) along the slide rail (15); a burr detection rod (22) is arranged at one end of the slide rail (15), and the burr detection rod (22) detects the burr of the vehicle model shell passing through the polishing table. Before processing the vehicle model, the simulation detection system is first set, and the standard value of each detection device is input into the simulation detection device, and the standard value of the angle between the arc top surface I (18) and the bottom edge I (20) of the front arc-shaped vehicle cover is set to Ø0, and the standard value of the angle between the arc top surface II (17) and the bottom edge II (21) of the rear arc-shaped vehicle cover is set to Ø; t , the standard length of the bottom side Ⅰ (20) is L0, and the standard length of the bottom side Ⅱ (21) is L t ; Set the standard total length of the bottom edge to L p , set K<(L0+L t ) / L p <1, and 0<L0 / (L0+L t )<0.22, set Ø t >Ø0,(L0·sinØ0) / (L t ·sinØ t )<Φ, where Φ is a fixed value, and ((L0+L t )·sinØ0) / ((L0+L t )·sinØ t )<Α, where Α is also a fixed value, the initial value of the radius of the screw hole Ⅰ in the car model splicing detection device is set to R1, the initial value of the radius of the screw hole Ⅱ is set to R2, and the initial value is set to R1=R 2，The initial radius of the screw is set to R0, and the initial value is set to 0.9<(R0 / R1)<0.97. The initial radius of the wheel is set to r0. The standard value of the size of the wheel hole I on the car model type I (7) is set to r1. The standard value of the size of the wheel hole II on the car model type II (10) is set to r2. The initial value is set to 0<(r2-r1) / r2<ε, where ε is a fixed value, and the initial standard value is set to 0.92<(r0 / r1)<0.95; the initial standard value is set to 0.8<(r0 / r2)<0.85, set the initial smoothness of the standard car model shell to E, set the initial stamping speed of the punch of the stamping system, the initial temperature of the hot air flow filled into the punch in the heating chamber, the initial temperature of the cooling liquid in the annular cooling liquid chamber, close the valve between the cooling chamber and the annular cooling liquid chamber before stamping, so that the cooling chamber is empty, and when stamping, fill the punch with heated air flow through the inflation pipe to heat the punch, and at the same time press the punch down at the initial set speed to form the shell of the car model, and after stamping The valve is opened to allow cooling liquid to enter the cooling chamber to cool the stamped shell. The stamped car model shell is inspected. First, the type of the car model shell is identified. If it is car model type Ⅰ (7) after stamping, the shape detection is performed through the car model shape detection device. First, the actual production included angle Ø1 of the arc top surface Ⅰ (18) and bottom edge Ⅰ (20) of the front arc car cover and the included angle Ø2 of the parallel lines of the arc top surface Ⅱ (17) and bottom edge Ⅱ (21) of the rear arc car cover are detected, as well as the length L1 of the bottom edge Ⅰ and the length L2 of the bottom edge Ⅱ after production. The total length of the bottom edge is L2. When (L1+L2) / L=1 is detected, it is directly judged as an unqualified product. When K<(L1+L2) / L<1 is detected, the next step of detection is carried out. When 0<L1 / (L1+L2)<F is detected, where F is any value between 0.22-0.3, the next step of detection is carried out. If L1 / (L1+L2)>0.3, it is judged as an unqualified product. If Ø1=Ø2 is detected, it is directly judged as an unqualified product. If Ø1<Ø 2，Then proceed to the next step of detection. When it is detected that (L1·sinØ1) / (L2·sinØ2)<Φ1, and ((L1+L2)·sinØ1) / ((L1+L2)·sinØ2)<Α1, and Φ1 and Α1 are compared with Φ and Α in the simulation detection system through a comparison device, if they are within an appropriate error range, it is determined to be qualified. If the type of the car model after stamping is identified as car model type II, the actual radius R3 of the screw hole I after production and the actual radius value R4 of the screw hole II after production are detected through the car model splicing detection device. If it is detected that R3≠R4, the model is directly determined to be unqualified. If R3=R4, the next step of judgment is started, and the detected R3 is compared with the production radius R of the screw, that is, the value of R / R3 is compared with the simulation The values ​​in the detection system are compared and judged to be qualified when they are within the appropriate error range. The wheel assembly process is detected by the wheel assembly detection device. When the size of wheel hole I on car model type I is detected to be r3, the size of wheel hole II on car model type II is r4, and the diameter of the wheel is r, when r3=r4 is detected, the model is directly judged to be unqualified. If the value of (r4-r3) / r ​​is detected and compared with the value in the simulation detection system, if it is within the appropriate error range, the next step of detection is carried out. If the values ​​of (r / r3) and (r / r4) are detected to be within the appropriate error range, it is judged to be qualified. If the smoothness of the car model shell is detected to be unqualified, it is judged to be an unqualified product. If the unqualified products reach a certain proportion, the stamping force and temperature of the stamping system are controlled by the control device.

Claims

1. A detection method for the production of car model toys, comprising a simulation detection system, a stamping system, a car model shape detection device, a car model splicing detection device, a wheel assembly detection device, a wheel detection system, a car model surface detection device, and a comparison device; the car model shape detection device comprises a detection head I of a moving rod and a car model type I; the car model type I comprises an integrally formed front arc-shaped car cover and a rear arc-shaped car cover, the front arc-shaped car cover comprises an arc-shaped top surface I, a side wall, and a bottom edge; the rear arc-shaped car cover comprises an arc-shaped top surface II, a side wall, and a bottom edge; the front and rear arcs The side wall and the bottom edge of the curved car cover are in the same range, the angle between the curved top surface Ⅰ of the front curved car cover and the bottom edge is Ø1, the angle between the curved top surface Ⅱ of the rear curved car cover and the bottom edge is Ø2, a spacing edge is provided between the curved top surface Ⅰ and the curved top surface Ⅱ, the spacing edge intersects vertically downward to the bottom edge and divides the bottom edge into the bottom edge Ⅰ on one side of the front curved car cover and the bottom edge Ⅱ on one side of the rear curved car cover, the length of the bottom edge Ⅰ is L1, the length of the bottom edge Ⅱ is L2, a wheel hole Ⅰ for mounting a wheel is provided on the bottom edge, and the total length of the bottom edge of the entire car model is L u The vehicle model splicing detection device includes a vehicle model type II and a movable detection head II. The vehicle model type II includes a front vehicle body and a rear vehicle body that are formed separately. The front vehicle body and the rear vehicle body are connected by a connecting screw. The bottom of the front vehicle body is provided with a wheel hole II for installing a wheel. The rear wall of the vehicle front body is provided with two screw holes I for installing connecting screws. The bottom of the rear vehicle body is provided with a wheel hole II for installing a wheel. The front wall of the rear vehicle body is provided with two screw holes II for installing connecting screws. The wheel detection system includes a wheel size detection device, a wheel hole I size detection device and a wheel hole II size detection device. Two wheels are arranged on a rotating shaft. The wheels are arranged as a wheel I installed on the wheel hole I and a wheel II installed on the wheel hole II. The mold surface detection device comprises a polishing table, the polishing device is arranged on the polishing table, the polishing device comprises a polishing knife and a slide rail, the polishing knife is provided with a connecting hole that can slide on the slide rail, the polishing knife is arranged on the slide rail and moves on the polishing table along the slide rail; a burr detection rod is arranged at one end of the slide rail, and the burr detection rod detects the burr of the car model shell passing through the polishing table; when performing the detection, the first step is included: before processing the car model, the simulation detection system is first set, the standard value of each detection device is input into the simulation detection device, the standard value of the angle between the arc top surface Ⅰ and the bottom edge Ⅰ of the front arc car cover is set to Ø0, and the standard value of the angle between the arc top surface Ⅱ and the bottom edge Ⅱ of the rear arc car cover is set to Ø t , the standard length of the base Ⅰ is L0, the standard length of the base Ⅱ is L t ; Set the standard total length of the bottom edge to L p , set K<(L0+L t ) / L p <1, and 0<L0 / (L0+L t )<0.22, set Ø t >Ø0,(L0·sinØ0) / (L t ·sinØ t )<Φ, where Φ is a fixed value, and ((L0+L t )·sinØ0) / ((L0+L t )·sinØ t )<Α, where Α is also a fixed value.

2. The detection method according to claim 1, characterized in that: In the first step, the initial value of the radius of the screw hole I in the car model splicing detection device is set to R1, the initial value of the radius of the screw hole II is set to R2, and the initial value is set to R1=R 2， The initial radius of the screw is set to R0, and the initial value is set to 0.9<(R0 / R1)<0.

97.

3. The detection method according to claim 2, characterized in that: In the first step, the method further includes setting the initial radius of the wheel to r0, setting the size standard value of the wheel hole I on the car model type I to r1, setting the size standard value of the wheel hole II on the car model type II to r2, setting the initial value 0<(r2-r1) / r2<ε, where ε is a fixed value, and setting the initial standard value 0.92<(r0 / r1)<0.95; setting the initial standard value 0.8<(r0 / r2)<0.85, setting the initial standard car model shell smoothness to E, and setting The initial stamping speed of the ram of the stamping system, the initial temperature of the hot air flow filled into the ram in the heating chamber, the initial temperature of the cooling liquid in the annular cooling liquid chamber, the valve between the cooling chamber and the annular cooling liquid chamber is closed before stamping, so that the cooling chamber is a cavity, when stamping, the heated air flow is filled into the ram through the inflation tube to heat the ram, and at the same time, the ram is pressed down at the initial set speed to form the shell of the car model, and after stamping, the valve is opened to allow the cooling liquid to enter the cooling chamber to cool the shell after stamping.

4. The detection method according to claim 3, characterized in that: The second step includes: testing the car model shell after stamping, first identifying the type of the car model shell, if the car model type I is stamped, then performing shape detection through the car model shape detection device, first detecting the actual production included angle Ø1 of the arc top surface I and the bottom edge I of the front arc-shaped car cover and the actual production included angle Ø2 of the parallel line of the arc top surface II and the bottom edge II of the rear arc-shaped car cover, and the length L1 of the bottom edge I and the length L2 of the bottom edge II after production, and the total length L of the bottom edge, when the detection When (L1+L2) / L=1, it is directly judged as an unqualified product. When it is detected that K<(L1+L2) / L<1, the next step of testing is carried out. When it is detected that 0<L1 / (L1+L2)<F, where F is any value between 0.22-0.3, the next step of testing is carried out. If L1 / (L1+L2)>0.3, it is judged as an unqualified product. If Ø1=Ø2, it is directly judged as an unqualified product. If Ø1<Ø 2， Then proceed to the next step of detection. When it is detected that (L1·sinØ1) / (L2·sinØ2)<Φ1, and ((L1+L2)·sinØ1) / ((L1+L2)·sinØ2)<Α1, and Φ1 and Α1 are compared with Φ and Α in the simulation detection system through a comparison device, if they are within an appropriate error range, it is determined to be qualified. If the type of the car model after stamping is identified as car model type II, the actual radius R3 of the screw hole I after production and the actual radius value R4 of the screw hole II after production are detected through the car model splicing detection device. If it is detected that R3≠R4, the model is directly determined to be unqualified. If R3=R4, the next step of judgment is started, and the detected R3 is compared with the production radius R of the screw, that is, the value of R / R3 is compared with the value in the simulation detection system through a comparison device, and it is determined to be qualified when it is within an appropriate error range.

5. The detection method according to claim 4, characterized in that: The method comprises the following steps: detecting the wheel assembly process by a wheel assembly detection device; when it is detected that the size of wheel hole I on the car model type I is r3, the size of wheel hole II on the car model type II is r4, and the diameter of the wheel is r, and when it is detected that r3=r4, the model is directly determined to be unqualified; if the detected value of (r4-r3) / r ​​is compared with the value in the simulation detection system, if it is within an appropriate error range, the next step of detection is performed; if it is detected that the values ​​of (r / r3) and (r / r4) are within an appropriate error range, it is determined to be qualified; if it is detected that the smoothness of the car model shell is unqualified, it is determined to be an unqualified product.

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