Automobile stamping die

Abstract

The application discloses a stamping die for automobile stamping parts, and relates to the technical field of stamping die for automobile production.The application is used to solve the problem that the first sound insulation plate and the second sound insulation plate of the stamping die for automobile stamping parts are not closed, noise can be transmitted from the gap, the vibration is more intense and the sound is larger in the smaller gap, and the ideal noise reduction effect is difficult to achieve.The lower part of the moving die is provided with a fixed die, the outer side of the lower end of the moving die is provided with an upper sound insulation structure, the outer side of the upper end of the fixed die is provided with a lower sound insulation structure, the front and rear parts of the moving die are provided with a falling part cleaning mechanism, the front and rear sides of the lower part of the fixed frame of the upper sound insulation structure are symmetrically provided with a first sound insulation plate group, the front and rear sides of the upper part of the fixed frame of the lower sound insulation structure are symmetrically provided with a second sound insulation plate group, and the left and right sides of the lower end of the upper sound insulation structure and the left and right sides of the upper end of the lower sound insulation structure are respectively symmetrically provided with a sound insulation plate mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping die for automobile production, in particular to a stamping die for automobile. BACKGROUND

[0002] Automobile stamping parts, as the name implies, are metal stamping parts that constitute automobile parts. In automobile stamping parts, part of them becomes automobile parts directly after stamping, and part of them becomes automobile parts after stamping and then welding, or machining, or painting process. The most important component of automobile die is the cover die. This kind of die is mainly cold stamping die. The broad sense of automobile die is the general term of die for manufacturing all parts of automobile. For example, stamping die, injection molding die, forging die, casting wax mold, glass mold, etc.

[0003] The utility model discloses a kind of automobile parts low-noise cutting dies, including base, the base top is fixedly arranged with bottom die, the bottom die top both ends are uniformly fixedly arranged with a plurality of limiting rods, and the limiting rod far from the bottom die one end is movably arranged with upper die between installation hole, the upper die bottom is fixedly arranged with cutting blade between limiting rod, the upper die bottom is fixedly arranged with first sound insulation board at cutting blade both ends outer side, the bottom die top is all set with first placement groove below first sound insulation board, the upper die bottom is all set with second placement groove at cutting blade both sides, the second placement groove inside top is uniformly provided with a plurality of telescopic rods.The utility model is provided with first sound insulation board and second sound insulation board, which can reduce the noise when the cutting blade contacts the automobile parts, thereby reducing the processing noise when using the cutting die, and improving the working environment.

[0004] The prior art in the above has the following defects: the first sound insulation board is used to isolate the noise on both sides of the cutting blade, and the second sound insulation board moves downward by the elastic force of the extension spring to contact the automobile parts, thereby shielding and isolating the noise on the other two sides of the cutting blade. However, the first sound insulation board and the second sound insulation board are not closed, and the noise will be transmitted from the gap. Since the smaller the physical gap is, the closer it is to the distance between air molecules, when the gas molecules move, the closer it is to resonance in the smaller gap, and the more intense the vibration is, the louder the sound is. Therefore, the above noise isolation scheme cannot achieve ideal noise reduction effect, so we propose a stamping die for automobile to solve the above problems. SUMMARY

[0005] The automobile stamping die has the advantages that the first sound insulation plate and the second sound insulation plate are sealed, noise is prevented from being transmitted from the gap, vibration is weakened, sound is reduced, and ideal noise reduction effect is achieved.

[0006] To achieve the above object, the present application provides the following technical scheme: an automobile stamping die, comprising a movable die, a fixed die arranged below the movable die, an upper sound insulation structure arranged on the outer side of the lower end of the movable die, a lower sound insulation structure arranged on the outer side of the upper end of the fixed die, a falling part cleaning mechanism arranged in front of and behind the movable die, a fixed frame arranged on the upper end of the upper sound insulation structure and the lower end of the lower sound insulation structure, a first sound insulation plate group symmetrically arranged on the front side and the rear side below the fixed frame of the upper sound insulation structure, the first sound insulation plate group comprising four first sound insulation plates arranged at equal intervals, a plurality of sound insulation plates arranged at equal intervals in the sound insulation groove, a second sound insulation plate group symmetrically arranged on the front side and the rear side above the fixed frame of the lower sound insulation structure, the second sound insulation plate group comprising three second sound insulation plates arranged at equal intervals, a sound insulation groove arranged between adjacent first sound insulation plates and between adjacent second sound insulation plates, and a sound insulation plate mechanism symmetrically arranged on the left side and the right side of the lower end of the upper sound insulation structure and on the left side and the right side of the upper end of the lower sound insulation structure.

[0007] Preferably, at least six guide columns are arranged in a rectangular shape below the movable die, and at least six guide sleeves corresponding to the guide columns are arranged in a rectangular shape above the fixed die, and the guide sleeves are matched with the guide columns.

[0008] Preferably, the sound insulation plate mechanism of the upper sound insulation structure is in sealed connection with the first sound insulation plate group at both ends, the sound insulation plate mechanism of the lower sound insulation structure is in sealed connection with the second sound insulation plate group at both ends, a first sound insulation plate is arranged at the outer end of the sound insulation plate mechanism, a second sound insulation plate is arranged on one side of the first sound insulation plate, a third sound insulation plate is arranged on one side of the second sound insulation plate, a first sound insulation groove is arranged on one side of the third sound insulation plate, a first sound insulation groove is arranged between the first sound insulation plate and the second sound insulation plate, a second sound insulation groove is arranged between the second sound insulation plate and the third sound insulation plate, a third sound insulation groove is arranged between the third sound insulation plate and a fourth sound insulation plate, a fixed plate is fixedly connected below the first sound insulation plate, the second sound insulation plate, the third sound insulation plate and the fourth sound insulation plate, a rubber block is arranged in close contact below the fixed plate, and the upper end of the first sound insulation plate, the second sound insulation plate, the third sound insulation plate and the fourth sound insulation plate is fixedly connected with the fixed frame.

[0009] Preferably, the upper end of the soundproof board is provided with a third soundproof board, the lower side of the third soundproof board is provided with a sound-absorbing sponge layer in a matched mode, and the third soundproof board and the sound-absorbing sponge layer are in a wave shape; a second soundproof board slot is arranged at the middle position of the third soundproof board and the sound-absorbing sponge layer, and the second soundproof board slot corresponds to the second soundproof board.

[0010] Preferably, the rubber block of the upper sound insulation structure is matched with the rubber block of the lower sound insulation structure, the lower end of the first soundproof board and the upper end of the second soundproof board are respectively provided with a sponge strip, the sponge strip of the second soundproof board is matched with the inner wall of the sound insulation slot of the upper sound insulation structure, and the sponge strip of the first soundproof board is matched with the inner wall of the sound insulation slot of the lower sound insulation structure.

[0011] Preferably, the front side and the rear side of the upper end of the falling piece cleaning mechanism are respectively provided with a first driving lead screw, and the first driving lead screws are respectively located at the front side and the rear side of the movable mold; the outer part of the first driving lead screw is provided with a first sliding block, the lower side of the first sliding block is fixedly connected with an electric telescopic cylinder, and a support frame is fixedly installed between the two electric telescopic cylinders.

[0012] Preferably, the inner side of one side of the lower side of the support frame is fixedly installed with a gas jetting mechanism, and the upper side of the other side of the support frame is installed with a gas pump; a gas conveying pipe is sealingly connected between the output end of the gas pump and the gas jetting mechanism, and the lower end of the gas jetting mechanism is provided with a plurality of nozzles in a rectangular shape; and an ultrasonic sensor module is fixedly installed at the middle position of the lower side of the support frame.

[0013] Preferably, the lower side of the other side of the support frame is installed with a second driving lead screw, the outer part of the second driving lead screw is installed with a second sliding block, and the lower side of the second sliding block is fixedly provided with a vacuum chuck.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The first soundproof plate group, the second soundproof plate group and the soundproof plate mechanism are arranged to block noise, and the second soundproof plate of the lower sound insulation structure enters the sound insulation groove and passes through the second soundproof plate groove during stamping, and the soundproof plate mechanism of the upper sound insulation structure and the lower sound insulation structure is in contact, when the movable die and the fixed die extrude the steel plate, the sound generated during stamping is isolated by the left and right soundproof plate mechanisms, and since the soundproof plate mechanism is provided with the first soundproof plate, the second soundproof plate, the third soundproof plate and the fourth soundproof plate, the four layers of soundproof plates are provided with three sound insulation grooves, the sound insulation grooves block noise layer by layer, thereby preventing noise from spreading outward, and the sound generated during stamping is isolated by the front and rear first soundproof plate group and second soundproof plate group, the sound is blocked layer by layer by the first soundproof plate and the second soundproof plate, and the sound can only pass through the sound insulation groove, and the soundproof plate in the sound insulation groove absorbs and blocks the sound again due to the cooperation of the wave shape and the sound-absorbing sponge layer, thereby greatly blocking the noise during stamping in the movable die and the fixed die, reducing the damage of noise to the health of workers, and the first soundproof plate group, the second soundproof plate group and the soundproof plate mechanism are sealingly connected, thereby effectively preventing sound leakage, solving the problem that the first soundproof plate and the second soundproof plate of the existing automobile stamping die are not closed, noise will spread from the gap, the closer to the resonance in the smaller gap, the stronger the vibration, the louder the sound, and it is difficult to achieve the ideal noise reduction effect.

[0016] During stamping, some waste will fall due to the stamping of some holes and grooves required by the workpiece, and the waste will affect the subsequent stamping if it is not cleaned, the waste is recognized and removed by the falling piece cleaning mechanism, after the workpiece is taken out after stamping, the front and rear electric telescopic cylinders are stretched at the same time, thereby driving the supporting frame to move downward, when the supporting frame moves to one side between the movable die and the fixed die, the first drive lead screw is driven to move the supporting frame between the movable die and the fixed die, the air pump is started to absorb air and input to the air jet mechanism through the air conveying pipe, and the high-pressure air blown out by the nozzle blows the surface of the fixed die, thereby blowing out small pieces of steel sheet, and the ultrasonic sensor module mainly comprises a sending part, a receiving part, a control part and a power supply part, wherein the sending part comprises a transmitter and a transducer, the transducer can convert the voltage received by the piezoelectric wafer into vibration, and the energy generated during vibration is converted into ultrasonic waves, the transmitter emits the generated ultrasonic waves, the ultrasonic waves reflect after contacting the movable die, the transducer receives the reflected ultrasonic waves, the transducer can convert mechanical energy into electrical energy, and the amplification circuit amplifies the generated electrical signal; the control part judges whether the received ultrasonic wave is the one emitted by itself, and finally identifies the size of the received ultrasonic wave; whether the movable die has waste is detected according to the change of the ultrasonic wave, and when it is detected that there is waste, the second drive lead screw drives the second sliding block and the vacuum chuck to move forward and backward, thereby clamping the waste and moving the waste out of the fixed die. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present application;

[0018] Figure 2 is a perspective view of the upper sound insulation structure in the present application;

[0019] Figure 3 is a perspective view of the lower sound insulation structure in the present application;

[0020] Figure 4 is a structural schematic diagram of the sound insulation board mechanism in the present application;

[0021] Figure 5 is a perspective view of the sound insulation board in the present application;

[0022] Figure 6 is a partial enlarged view of the A area in the present application. Figure 1

[0023] In the figure: 1, movable mold; 2, fixed mold; 3, guide sliding sleeve; 4, guide column; 5, upper sound insulation structure; 6, lower sound insulation structure; 7, first sliding block; 8, electric telescopic cylinder; 9, fixed frame; 10, sound insulation board mechanism; 11, first sound insulation board; 12, sound insulation board; 13, sound insulation groove; 14, sponge strip; 15, support frame; 16, first driving lead screw; 17, second sound insulation board; 18, first sound insulation board; 19, second sound insulation board; 20, third sound insulation board; 21, fourth sound insulation board; 22, first sound insulation groove; 23, second sound insulation groove; 24, third sound insulation groove; 25, fixed plate; 26, rubber block; 27, third sound insulation board; 28, sound absorption sponge layer; 29, nozzle; 30, second sound insulation board groove; 31, air pump; 32, air conveying pipe; 33, second driving lead screw; 34, second sliding block; 35, vacuum chuck; 36, ultrasonic sensor module; 37, air jet mechanism; 38, falling piece cleaning mechanism. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0025] Please refer to Figures 1-6 ​In one embodiment of the present application, the automobile stamping die comprises a movable die 1, a fixed die 2 arranged below the movable die 1, an upper sound insulation structure 5 arranged on the outer side of the lower end of the movable die 1, a lower sound insulation structure 6 arranged on the outer side of the upper end of the fixed die 2, a falling part cleaning mechanism 38 arranged at the front and rear of the movable die 1, a fixed frame 9 arranged on the upper end of the upper sound insulation structure 5 and the lower end of the lower sound insulation structure 6, a first sound insulation plate group symmetrically arranged on the front side and the rear side below the fixed frame 9 of the upper sound insulation structure 5, the first sound insulation plate group comprising four first sound insulation plates 11 arranged at equal intervals, a sound insulation groove 13 having a plurality of sound insulation plates 12 arranged at equal intervals in the interior thereof, a second sound insulation plate group symmetrically arranged on the front side and the rear side above the fixed frame 9 of the lower sound insulation structure 6, the second sound insulation plate group comprising three second sound insulation plates 17 arranged at equal intervals, and a sound insulation plate mechanism 10 symmetrically arranged on the left and right sides of the lower end of the upper sound insulation structure 5 and the left and right sides of the upper end of the lower sound insulation structure 6.

[0026] In use, during stamping, the steel plate to be stamped is placed above the fixed die 2, the movable die 1 is driven to move downward, when the movable die 1 approaches the fixed die 2, the second sound insulation plates 17 of the lower sound insulation structure 6 enter the sound insulation groove 13 and pass through the second sound insulation plate groove 30, at the same time, the sound insulation plate mechanisms 10 of the upper sound insulation structure 5 and the lower sound insulation structure 6 are in contact, when the movable die 1 and the fixed die 2 press the steel plate, the sound generated during stamping is isolated by the sound insulation plate mechanisms 10 on the left and right sides, since the sound insulation plate mechanisms 10 are provided with the first sound insulation plate 18, the second sound insulation plate 19, the third sound insulation plate 20 and the fourth sound insulation plate 21, four layers of sound insulation plates, and three sound insulation grooves are arranged between the sound insulation plates, the sound insulation grooves layer by layer block the noise, thereby preventing the noise from spreading outward, at the same time, the sound generated during stamping is isolated by the first sound insulation plate group and the second sound insulation plate group on the front and rear sides, the sound is layer by layer blocked by the first sound insulation plates 11 and the second sound insulation plates 17, the sound can only pass through the sound insulation groove 13, the sound insulation plates 12 in the sound insulation groove 13 absorb and block the sound again due to the cooperation of the wave shape and the sound-absorbing sponge layer 28, thereby greatly blocking the noise during stamping in the movable die 1 and the fixed die 2, and reducing the damage of the noise to the health of the workers.

[0027] Referring to Figure 1 , at least six guide columns 4 are arranged in a rectangular shape below the movable die 1, at least six guide sleeves 3 corresponding to the guide columns 4 are arranged in a rectangular shape above the fixed die 2, and the guide sleeves 3 are matched with the guide columns 4.

[0028] Referring to Figure 1 and Figure 4The sound insulation plate mechanism 10 of the upper sound insulation structure 5 is respectively sealed and connected with the first sound insulation plate group at both ends, the sound insulation plate mechanism 10 of the lower sound insulation structure 6 is respectively sealed and connected with the second sound insulation plate group at both ends, the outer end of the sound insulation plate mechanism 10 is provided with a first sound insulation plate 18, one side of the first sound insulation plate 18 is provided with a second sound insulation plate 19, one side of the second sound insulation plate 19 is provided with a third sound insulation plate 20, one side of the third sound insulation plate 20 is provided with a first sound insulation groove 22, the first sound insulation groove 22 is arranged between the first sound insulation plate 18 and the second sound insulation plate 19, the second sound insulation groove 23 is arranged between the second sound insulation plate 19 and the third sound insulation plate 20, the third sound insulation groove 24 is arranged between the third sound insulation plate 20 and the fourth sound insulation plate 21, the lower side of the first sound insulation plate 18, the second sound insulation plate 19, the third sound insulation plate 20 and the fourth sound insulation plate 21 is fixedly connected with a fixed plate 25, the lower side of the fixed plate 25 is attached with a rubber block 26, and the upper end of the first sound insulation plate 18, the second sound insulation plate 19, the third sound insulation plate 20 and the fourth sound insulation plate 21 is fixedly connected with the fixed frame 9.

[0029] Please refer to Figure 5 The upper end of the sound insulation plate 12 is provided with a third sound insulation plate 27, the lower side of the third sound insulation plate 27 is attached with a sound-absorbing sponge layer 28, and the third sound insulation plate 27 and the sound-absorbing sponge layer 28 are wave-shaped, a second sound insulation plate groove 30 is arranged at the middle position of the third sound insulation plate 27 and the sound-absorbing sponge layer 28, and the second sound insulation plate groove 30 corresponds to the second sound insulation plate 17.

[0030] Please refer to Figures 1-3 The rubber block 26 of the upper sound insulation structure 5 is attached with the rubber block 26 of the lower sound insulation structure 6, the lower end of the first sound insulation plate 11 and the upper end of the second sound insulation plate 17 are respectively provided with a sponge strip 14, the sponge strip 14 of the second sound insulation plate 17 is attached with the inner wall of the sound insulation groove 13 of the upper sound insulation structure 5, and the sponge strip 14 of the first sound insulation plate 11 is attached with the inner wall of the sound insulation groove 13 of the lower sound insulation structure 6.

[0031] Please refer to Figure 1 and Figure 6The front side and the rear side of the upper end of the falling piece cleaning mechanism 38 are respectively provided with first driving lead screws 16, and the first driving lead screws 16 are respectively located on the front side and the rear side of the movable mold 1. The outer transmission of the first driving lead screw 16 is provided with a first sliding block 7. The lower side of the first sliding block 7 is fixedly connected with an electric telescopic cylinder 8. Two electric telescopic cylinders 8 are fixedly installed between the support frames 15. The inside of one side of the lower side of the support frame 15 is fixedly installed with a gas jet mechanism 37. The upper side of the other side of the support frame 15 is installed with a gas pump 31. The output end of the gas pump 31 is sealingly connected with a gas conveying pipe 32 between the gas jet mechanism 37. The lower end of the gas jet mechanism 37 is provided with a plurality of nozzles 29 in a rectangular shape. The middle position of the lower side of the support frame 15 is fixedly installed with an ultrasonic sensor module 36. The lower side of the other side of the support frame 15 is installed with a second driving lead screw 33. The outer transmission of the second driving lead screw 33 is installed with a second sliding block 34. The lower side of the second sliding block 34 is fixedly provided with a vacuum chuck 35.

[0032] Working principle: when stamping, the steel plate to be stamped is placed above the fixed die 2, the movable die 1 is driven to move downward, when the movable die 1 approaches the fixed die 2, the second soundproof plate 17 of the lower sound insulation structure 6 enters the sound insulation groove 13 and passes through the second soundproof plate groove 30, at the same time, the sound insulation plate mechanism 10 of the upper sound insulation structure 5 and the lower sound insulation structure 6 is in contact, when the movable die 1 and the fixed die 2 extrude the steel plate, the sound generated by stamping is isolated by the sound insulation plate mechanism 10 on both sides, because the sound insulation plate mechanism 10 is provided with the first sound insulation plate 18, the second sound insulation plate 19, the third sound insulation plate 20 and the fourth sound insulation plate 21, four layers of sound insulation plates, and three sound insulation grooves are arranged between each other, the sound insulation grooves layer by layer block the noise, thereby preventing the noise from spreading outward, at the same time, the sound generated by stamping is isolated by the first soundproof plate group and the second soundproof plate group on the front and back sides, the sound is layer by layer blocked by the first soundproof plate 11 and the second soundproof plate 17, the sound can only pass through the sound insulation groove 13, the soundproof plate 12 in the sound insulation groove 13 absorbs and blocks the sound again due to the cooperation of the wave shape and the sound-absorbing sponge layer 28, thereby greatly blocking the noise during stamping in the movable die 1 and the fixed die 2, reducing the damage of noise to the health of workers, when stamping, some waste will fall due to the demand for some hole and groove stamping of workpieces, if the waste is not cleaned, it will affect the subsequent stamping, the falling piece cleaning mechanism 38 identifies and removes the waste, after the workpiece is taken out after stamping, the front and rear electric telescopic cylinders 8 are stretched at the same time, thereby driving the supporting frame 15 to move downward, when the supporting frame 15 moves to one side between the movable die 1 and the fixed die 2, the first drive lead screw 16 is driven to move the supporting frame 15 between the movable die 1 and the fixed die 2, the air pump 31 is started to absorb air and input to the air jet mechanism 37 through the air pipe 32, and the high-pressure air blown out through the nozzle 29 blows the surface of the fixed die 2, thereby blowing out small pieces of steel sheet, the ultrasonic sensor module 36 mainly consists of a sending part, a receiving part, a control part and a power supply part, wherein the sending part consists of a transmitter and a transducer, the transducer can convert the voltage received by the piezoelectric wafer into vibration, and the energy generated when vibrating is converted into ultrasonic waves, the transmitter emits the generated ultrasonic waves, the ultrasonic waves reflect after contacting the movable die 2, the transducer receives the reflected ultrasonic waves, the transducer can convert mechanical energy into electrical energy, and the amplification circuit amplifies the generated electrical signal; the control part judges whether the received ultrasonic wave is the one emitted by itself, and finally identifies the size of the received ultrasonic wave; whether the movable die 2 contains waste is detected according to the change of the ultrasonic wave, when it is detected that there is waste, the second drive lead screw 33 drives the second sliding block 34 and the vacuum chuck 35 to move forward and backward, thereby clamping the waste and moving the waste out of the fixed die 2.

[0033] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A die for automobile stamping parts, comprising a movable die (1) and a fixed die (2), characterized in that: An upper sound insulation structure (5) is installed on the outer side of the lower end of the movable mold (1), and a lower sound insulation structure (6) is installed on the outer side of the upper end of the fixed mold (2); The lower rectangle of the movable mold (1) is provided with at least six guide posts (4), and the upper rectangle of the fixed mold (2) is provided with at least six guide sleeves (3) corresponding to the guide posts (4), and the guide sleeves (3) are adapted to the guide posts (4); The upper end of the upper sound insulation structure (5) and the lower end of the lower sound insulation structure (6) are both provided with a fixing frame (9); A first sound-blocking plate group is symmetrically arranged on the front and rear sides below the fixed frame (9) of the upper sound-insulating structure (5), the first sound-blocking plate group including four first sound-blocking plates (11) arranged at equal intervals; a second sound-blocking plate group is symmetrically arranged on the front and rear sides above the fixed frame (9) of the lower sound-insulating structure (6), the second sound-blocking plate group encompassing three second sound-blocking plates (17) arranged at equal intervals; Sound insulation grooves (13) are formed between adjacent first sound insulation plates (11) and between adjacent second sound insulation plates (17). The lower end of the first sound-proof plate (11) and the upper end of the second sound-proof plate (17) are respectively provided with a sponge strip (14), and the sponge strip (14) of the second sound-proof plate (17) is in contact with the inner wall of the sound insulation groove (13) of the upper sound insulation structure (5); A third wavy sound-blocking plate (27) is provided in the sound-isolating groove (13); a sound-absorbing sponge layer (28) is provided below the third sound-blocking plate (27); and a second sound-blocking plate groove (30) is provided between the third sound-blocking plate (27) and the sound-absorbing sponge layer (28); Sound insulation board mechanisms (10) are symmetrically provided on the left and right sides of the lower end of the upper sound insulation structure (5) and on the left and right sides of the upper end of the lower sound insulation structure (6); The sound insulation board mechanism (10) comprises a first sound insulation board (18), a second sound insulation board (19), a third sound insulation board (20) and a fourth sound insulation board (21) which are sequentially stacked in a thickness direction, and a first sound insulation groove (22), a second sound insulation groove (23) and a third sound insulation groove (24) are sequentially formed between two adjacent sound insulation boards; The rubber block of the upper sound insulation structure is bonded to the rubber block of the lower sound insulation structure. A sponge strip is provided at the lower end of the first sound insulation plate and the upper end of the second sound insulation plate respectively. The sponge strip of the second sound insulation plate is bonded to the inner wall of the sound insulation groove of the upper sound insulation structure, and the sponge strip of the first sound insulation plate is bonded to the inner wall of the sound insulation groove of the lower sound insulation structure. The first sound-blocking panel group, the second sound-blocking panel group and the sound insulation panel mechanism are sealed and connected.

2. The automotive stamping die according to claim 1, wherein: A dropped part cleaning mechanism (38) is provided in front and rear of the movable mold (1), and the dropped part cleaning mechanism (38) comprises a first driving screw (16), a first sliding block (7), an electric telescopic cylinder (8), and a support frame (15); an air jet mechanism (37) is fixedly installed inside one side below the support frame (15), an air pump (31) is installed above the other side of the support frame (15), and an air pipe (32) is sealed between the output end of the air pump (31) and the air jet mechanism (37), a plurality of nozzles (29) are provided in a rectangular shape at the lower end of the air jet mechanism (37), and an ultrasonic sensor module (36) is fixedly installed at the middle position below the support frame (15) for detecting and removing stamping waste.

3. The automotive stamping die according to claim 1, characterized in that: A fixing plate (25) is fixedly connected below the first sound insulation board (18), the second sound insulation board (19), the third sound insulation board (20) and the fourth sound insulation board (21); a rubber block (26) is fitted below the fixing plate (25); and the upper ends of the first sound insulation board (18), the second sound insulation board (19), the third sound insulation board (20) and the fourth sound insulation board (21) are fixedly connected to the fixing frame (9).

4. The automotive stamping die according to claim 2, characterized in that: An air jet mechanism (37) is fixedly installed inside one side below the support frame (15), an air pump (31) is installed above the other side of the support frame (15), and an air delivery pipe (32) is sealed between the output end of the air pump (31) and the air jet mechanism (37).

5. The automotive stamping die according to claim 2, characterized in that: An ultrasonic sensor module (36) is fixedly installed at a middle position below the support frame (15) for detecting waste material from the movable die stamping.

6. The automotive stamping die according to claim 2, characterized in that: A second driving screw (33) is installed below the other side of the support frame (15), and a second sliding block (34) is installed on the external transmission of the second driving screw (33). A vacuum suction cup (35) is fixedly provided below the second sliding block (34) for sucking and removing waste materials.

7. The automotive stamping die according to claim 1, characterized in that: The third sound-absorbing plate (27) and the sound-absorbing sponge layer (28) are both in a continuous wave shape and extend longitudinally along the sound-isolating groove (13), forming a multi-level impedance composite sound-absorbing structure.

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