Automobile metal plate stamping die

Abstract

The utility model relates to the field of stamping dies, in particular to an automobile metal plate stamping die which comprises an installation table, an installation frame, a forming punch assembly and a forming die cavity assembly. An installation frame used for providing supporting force for the protection device is installed outside an installation table, a forming punch assembly used for stamping metal plate forming is installed at the position, close to the top end, in the installation frame, a forming die cavity assembly is installed at the top end of the installation table, and the forming punch assembly comprises a top plate; a plurality of sets of auxiliary male die installation grooves used for installing auxiliary male dies of various shapes are distributed in the bottom end of the main male die in a rectangular mode, a plurality of sets of connecting sliding rods are linearly installed at the position, close to the edge of one side, of the top end of the top plate, and the positions, close to the bottom ends, of the connecting sliding rods are sleeved with damping springs. When the punch is pressed downwards, the damping spring is compressed, a part of impact force is absorbed, and instant high stress is prevented from directly acting on the die.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch die field especially relates to automobile sheet metal stamping die. BACKGROUND

[0002] The automobile sheet metal stamping die is a kind of die specially used in automobile manufacturing field, carries out stamping processing to sheet metal material, makes it form the die of specific shape and size automobile spare part, and the automobile sheet metal stamping die can efficiently and accurately produce various complex automobile sheet metal spare parts, such as door, engine hood, body side plate etc.

[0003] The existing stamping assembly is directly stamped mostly, which can cause that impact force cannot be well buffered and dispersed when stamping operation, so that the die and related parts bear larger instantaneous stress, not only possibly shortening the service life of die and equipment, but also possibly affecting the precision and quality of stamping piece because of unstable stamping action, and further producing certain adverse effects on the efficiency of entire production process and product consistency.

[0004] Therefore, in view of the above-mentioned problems that the existing stamping assembly is directly stamped mostly, impact force lacks buffering and dispersion, leading to that the die and related parts bear larger instantaneous stress, possibly shortening the service life of die and equipment, affecting the precision and quality of stamping piece, and being adverse to production efficiency and product consistency, an automobile sheet metal stamping die can be designed to play a buffering role in the stamping process through shock-absorbing damping spring, when punch is pressed down, shock-absorbing damping spring is compressed, absorbs part of impact force, avoids that instantaneous high stress directly acts on die, primary hydraulic system can accurately control the movement speed and pressure of punch, makes the stamping process more stable and accurate, improves the precision and quality of stamping piece. CONTENT OF UTILITY MODEL

[0005] In order to overcome the problems that the existing stamping assembly is directly stamped mostly, impact force lacks buffering and dispersion, leading to that the die and related parts bear larger instantaneous stress, possibly shortening the service life of die and equipment, affecting the precision and quality of stamping piece, and being adverse to production efficiency and product consistency.

[0006] The utility model discloses a technical scheme for an automobile sheet metal stamping die, comprising a mounting table, a mounting frame, a forming punch assembly and a forming die cavity assembly. The mounting frame is installed on the outside of the mounting table to provide support for the protection device. The forming punch assembly for sheet metal forming is installed on the inside of the mounting frame near the top end. The forming die cavity assembly for providing a formed die cavity is installed on the top end of the mounting table. The forming punch assembly comprises a top plate. The main punch is installed on the bottom end of the top plate. The bottom end of the main punch is rectangularly distributed with multiple groups of auxiliary punch installation grooves for installing auxiliary punches of various shapes. Multiple groups of connecting slide rods are linearly installed on the top end of the top plate near one side edge. The connecting slide rods are sleeved with shock-absorbing damping springs near the bottom end. The bottom end of the connecting slide rods is connected to the forming die cavity assembly.

[0007] Preferably, after starting the stamping device, the pressure acts on the forming punch assembly at the top end in the mounting frame through the power transmission device. The top plate is stressed, and the main punch at the bottom end and the auxiliary punch installation grooves distributed on the rectangular bottom end with different shape auxiliary punches move downward together. At the same time, the multiple groups of connecting slide rods linearly arranged on the top end of the top plate near one side edge also move downward. The shock-absorbing damping springs sleeved with the connecting slide rods near the bottom end are gradually compressed. As the forming punch assembly continues to move downward, the main punch and the auxiliary punch contact the sheet metal material placed on the forming die cavity assembly on the top end of the mounting table. The pressure applied by the punch forces the sheet metal material to recess into the forming die cavity assembly. The sheet metal deforms plastically according to the shape gap between the main punch, the auxiliary punch and the forming die cavity assembly. When the stamping reaches the set stroke or pressure requirement, the stamping device stops pressing. At this time, the compressed shock-absorbing damping spring pushes the top plate to rebound upward using its elastic potential energy, thereby driving the main punch, the auxiliary punch and the connecting slide rod to return to the initial position. Thus, the stamping process is completed, and the formed sheet metal part can be taken out of the forming die cavity assembly, ready for the next round of stamping.

[0008] Preferably, a first hydraulic rod is installed at the center of the top end of the top plate. A first sheath is sleeved at the top end of the first hydraulic rod. A first hydraulic cylinder is installed at the top end of the first sheath. The first hydraulic cylinder is connected to the first hydraulic rod. An upper positioning groove is opened on the top plate away from the connecting slide rod.

[0009] Preferably, the mounting table is hollow. Two groups of opening and closing doors are symmetrically hinged on the outside of the mounting table. Handles are installed on the outside of the opening and closing doors.

[0010] Preferably, ventilation openings are opened through both sides of the mounting frame. An installation hole for installing the first sheath is opened through the top end of the mounting frame. A control console is detachably installed on one side edge of the outside of the mounting frame.

[0011] As preferred, the installation frame is detachably installed with a material placing table below the air vents on both sides, and the material placing table is symmetrically installed with two groups of support columns at the bottom end, and the support columns are installed with fixing plates at the bottom end.

[0012] As preferred, the forming die cavity assembly comprises a two-stage hydraulic rod, a two-stage sheath is sleeved at the bottom end of the two-stage hydraulic rod, a two-stage hydraulic cylinder is installed outside the two-stage sheath, and the two-stage hydraulic cylinder is connected with the two-stage hydraulic rod.

[0013] As preferred, the two-stage hydraulic rod is fixedly installed with a main female die at the piston end, a plurality of auxiliary female die installation grooves for installing auxiliary female dies are arranged in a rectangular distribution at the top end of the main female die, and a female die wall ring is sleeved outside the main female die and located at the top end of the installation table.

[0014] The utility model discloses a beneficial effect: through the damping spring of shock absorption in the stamping process has played the buffering effect, when the punch is pressed, the damping spring of shock absorption is compressed, absorbs a part of impact force, avoided the instantaneous high stress direct action on the mould, compared with the high stress of prior art direct stamping, this buffering mechanism effectively protected the mould and equipment, prolonged its life, and the first -stage hydraulic system can accurately control the movement speed and pressure of punch, makes the stamping process more stable and accurate, improves the precision and quality of stamping part, solves the problem of low stamping precision in prior art because of the impact force difficult to control, the second -stage hydraulic system and first -stage hydraulic system work together, can better control the deformation of sheet metal material in the stamping process, through accurate control of the movement of main female die, can realize the more even shaping of sheet metal material, avoided the stamping quality problem of prior art because of stress concentration, the auxiliary female die installation groove and female die wall ring of main female die top end help to improve the forming precision and stability of mould, further guarantee the quality of stamping part. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The installation table structure schematic diagram of the utility model automobile sheet metal stamping die is shown;

[0016] Figure 2 The overall structure schematic diagram of the utility model automobile sheet metal stamping die is shown;

[0017] Figure 3 The forming punch assembly structure schematic diagram of the utility model automobile sheet metal stamping die is shown;

[0018] Figure 4 The forming die cavity assembly structure schematic diagram of the utility model automobile sheet metal stamping die is shown.

[0019] Explanation of reference signs: 1, mounting table; 2, mounting frame; 101, opening and closing door; 102, handle; 201, feeding table; 202, supporting column; 203, fixed plate; 204, ventilation opening; 205, control console; 301, primary hydraulic cylinder; 302, primary sheath; 303, primary hydraulic rod; 304, top plate; 305, upper positioning groove; 306, auxiliary male die mounting groove; 307, damping damping spring; 308, connecting slide rod; 309, main male die; 401, female die wall ring; 402, lower positioning groove; 403, main female die; 404, secondary hydraulic rod; 405, secondary hydraulic cylinder; 406, secondary sheath; 407, auxiliary female die mounting groove. DETAILED DESCRIPTION

[0020] The utility model will be further explained below in combination with the drawings and examples.

[0021] Please refer to Figures 1-4The utility model provides an embodiment: Car sheet metal stamping die, including installation platform 1, installation frame 2, forming punch assembly and forming die cavity subassembly, installation platform 1 outside is equipped with the installation frame 2 for the support of protection device provides force, installation frame 2 inside is equipped with the forming punch assembly for the stamping sheet metal forming of near top, installation platform 1 top is equipped with the forming die cavity subassembly for providing a forming die cavity, forming punch assembly includes top plate 304, and top plate 304 bottom end is equipped with main punch 309, and the bottom end of main punch 309 rectangular distribution has a plurality of groups for installing the auxiliary punch mounting groove 306 of various shapes auxiliary punch, and top plate 304 top is linearly equipped with a plurality of groups of connecting slide bar 308 near one side edge, and connecting slide bar 308 is equipped with the damping spring 307 of shock attenuation near bottom end, and connecting slide bar 308 bottom end is connected to forming die cavity subassembly, after starting stamping equipment, pressure is acted on the forming punch assembly of installation frame 2 inner top by power transmission device, and top plate 304 is stressed, and with the bottom end main punch 309 and the auxiliary punch mounting groove 306 of different shapes auxiliary punch of distribution at its rectangular bottom end, together downwardly moves, while, the plurality of groups of connecting slide bar 308 of linear arrangement of top plate 304 top near one side edge also moves down, and the damping spring 307 of shock attenuation of sleeve setting of connecting slide bar 308 near bottom end is gradually compressed, along with the continuous downward of forming punch assembly, main punch 309 and auxiliary punch contact the sheet metal material placed on the forming die cavity subassembly of installation platform 1 top, and the pressure of punch forces the sheet metal material to recess inside forming die cavity subassembly, and the sheet metal is according to the shape gap between main punch 309, auxiliary punch and forming die cavity subassembly and carries out plastic deformation, when stamping reaches the set stroke or pressure requirement, and stamping equipment stops pressing, at this time, the damping spring 307 of shock attenuation of being compressed utilizes the elastic potential energy of itself and pushes top plate 304 and rebounds upwards, and then drives main punch 309, auxiliary punch and connecting slide bar 308 to return to the initial position, by this, once stamping process ends, and the sheet metal part of forming can be taken out from forming die cavity subassembly, and prepares next round stamping and puts into new sheet metal material.

[0022] Please refer to Figures 1-3In the embodiment, a first hydraulic rod 303 is installed at the center of the top end of the top plate 304, a first sheath 302 is sleeved at the top end of the first hydraulic rod 303, a first hydraulic cylinder 301 is installed at the top end of the first sheath 302, the first hydraulic cylinder 301 is connected with the first hydraulic rod 303, the top plate 304 is provided with an upper positioning groove 305 away from the connecting slide rod 308, the first hydraulic cylinder 301 drives the first hydraulic rod 303 to realize the precise lifting action of the top plate 304, which helps to adjust the top plate 304 to the appropriate height in different working scenes to meet the specific operation requirements, the upper positioning groove 305 is convenient for positioning and fixing the top plate 304 at a specific height or position, ensures that it will not move accidentally during work, and improves the accuracy and reliability of operation, the mounting table 1 is hollow, two sets of opening and closing doors 101 are symmetrically hinged outside the mounting table 1, handles 102 are installed outside the opening and closing doors 101, the mounting table 1 is hollow, which provides a space for internal components and lines, when internal maintenance, repair or replacement of parts are needed, the opening and closing doors 101 symmetrically hinged by the handles 102 are opened, the operator can conveniently operate, and the work efficiency is improved.

[0023] Please refer to Figures 1-2 In the embodiment, ventilation openings 204 are provided through both sides of the mounting frame 2, mounting holes for mounting the first sheath 302 are provided through the top end of the mounting frame 2, and a control console 205 is detachably installed on one side edge of the outside of the mounting frame 2, which is convenient for the operator to operate and monitor during use, and can be easily disassembled for repair or replacement when the control console 205 fails or needs to be upgraded, and the material placing table 201 is detachably installed below the ventilation openings 204 on both sides of the mounting frame 2, two sets of support columns 202 are symmetrically installed at the bottom end of the material placing table 201, and a fixed plate 203 is installed at the bottom end of each support column 202, which can provide stable support to ensure that the material placing table 201 will not shake or tilt when carrying materials, and ensure the safety of material storage.

[0024] Please refer to Figures 3-4In the embodiment, the forming cavity assembly comprises a two-stage hydraulic rod 404, a two-stage sheath 406 is sleeved at the bottom end of the two-stage hydraulic rod 404, a two-stage hydraulic cylinder 405 is installed outside the two-stage sheath 406, the two-stage hydraulic cylinder 405 is connected with the two-stage hydraulic rod 404, the two-stage hydraulic cylinder 405 drives the two-stage hydraulic rod 404, accurate extension and contraction actions can be realized, thereby accurate control of related operations of the forming cavity is realized, the forming precision and quality are improved, a main female die 403 is fixedly installed at the piston end of the two-stage hydraulic rod 404, a plurality of groups of auxiliary female die installation grooves 407 for installing auxiliary female dies are distributed in a rectangular shape at the top end of the main female die 403, a female die wall ring 401 located at the top end of the mounting table 1 is sleeved outside the main female die 403, a lower positioning groove 402 is formed outside the female die wall ring 401, the plurality of groups of auxiliary female die installation grooves 407 distributed in a rectangular shape at the top end of the main female die 403 facilitate installation of corresponding auxiliary female dies according to different forming requirements, the versatility and flexibility of the die are increased, a plurality of product forming requirements can be adapted to, the lower positioning groove 402 formed outside the female die wall ring 401 is helpful for accurate positioning of the female die in the installation and use process, the precision of the forming position is ensured, and the consistency of products is improved.

[0025] In the process of work, before the automobile sheet metal stamping work, the staff will first according to the specific shape, size and process requirements of the to be stamping sheet metal parts, in the auxiliary male die installation groove 306 of the main male die 309 installation of appropriate auxiliary male die, at the same time in the auxiliary female die installation groove 407 of the main female die 403 accurate installation of corresponding auxiliary female die, to ensure that the stamping die can completely match the stamping task about to carry on, after the preparation work is completed, start the equipment, at this time, the first hydraulic cylinder 301 begins to run, its powerful driving first hydraulic rod 303 rapidly and stably downward, with the first hydraulic rod 303 down, the top plate 304 connected with it together with the downward movement of the main male die 309, in this process, the shock absorbing damping spring 307 on the connecting slide rod 308 plays an important role, they not only can effectively buffer the impact force generated when the main male die 309 down, but also can assist to maintain the stability of the movement of the top plate 304, reduce the shaking and deviation, ensure that the main male die 309 can be in the precise and stable posture close to the sheet metal parts to be stamped, at the same time, the second hydraulic cylinder 405 is also started synchronously, accurately drive the second hydraulic rod 404 to stretch and retract action, so as to fine adjustment of the position of the main female die 403, make it can perfectly match with the main male die 309 which is descending, for the coming stamping forming process to make full preparation, when the main male die 309 and the main female die 403 close to the sheet metal parts to be stamped, the strong pressure on the sheet metal parts, make it gradually plastic deformation, according to the shape and design requirements of the mold gradually forming, in this key stamping process, the die wall ring 401 provides stable support for the female die, ensure that the female die will not be deformed or displaced when bearing huge pressure, so as to ensure the precision and quality of stamping forming, throughout the work process, the ventilation opening 204 through the installation frame 2 two sides of the opening continuously play an important role, they make the air inside the equipment can flow freely, effectively the heat generated in the stamping process is quickly dissipated, avoid the equipment due to overheating and performance decline, effectively guarantee the long time stable operation of the equipment, the installation frame 2 two sides of the bottom of the removable material table 201 also brings great convenience to the work, in the stamping process, the materials, tools and temporary storage of semi-finished products needed in the process, etc., can be neatly placed on the material table 201, the support column 202 and the fixed plate 203 at the bottom of the material table 201 ensure the stability and carrying capacity of the material table 201, so that it can safely and reliably support the heavy object.

[0026] Through the above steps, after the start of the stamping equipment, the pressure is applied to the forming punch assembly at the top end of the mounting frame 2 through the power transmission device, the top plate 304 is stressed, and the main punch 309 at the bottom end and the auxiliary punch mounting groove 306 distributed at the rectangular bottom end and equipped with different shaped auxiliary punches are moved downward together. At the same time, the multiple sets of connecting slide rods 308 linearly arranged at the top end of the top plate 304 near the side edge also move downward, and the shock-absorbing damping springs 307 sleeved near the bottom end of the connecting slide rods 308 are gradually compressed. As the forming punch assembly continues to move downward, the main punch 309 and the auxiliary punch contact the sheet metal material placed on the forming cavity assembly at the top end of the mounting table 1. The pressure applied by the punch forces the sheet metal material to be recessed into the forming cavity assembly, and the sheet metal is plastically deformed according to the shape gap between the main punch 309, the auxiliary punch and the forming cavity assembly. When the stamping reaches the set stroke or pressure requirement, the stamping equipment stops pressing. At this time, the compressed shock-absorbing damping springs 307 use their own elastic potential energy to push the top plate 304 to rebound upward, thereby driving the main punch 309, the auxiliary punch and the connecting slide rod 308 to return to the initial position. Thus, the one-time stamping process is completed, and the formed sheet metal part can be taken out of the forming cavity assembly, and new sheet metal material is prepared for the next round of stamping.

Claims

1. An automobile sheet metal stamping die comprising a mounting table (1); characterized in that: Also include the installation frame (2), forming punch assembly and forming die cavity assembly; The installation frame (2) is installed outside the installation table (1) for the protection device to provide support force, the forming punch assembly is installed inside the installation frame (2) near the top for the stamping sheet metal forming, the installation table (1) top end is provided with a forming die cavity assembly for providing a forming cavity, the forming punch assembly includes a top plate (304), the bottom end of the top plate (304) is provided with a main punch (309), the bottom end of the main punch (309) is distributed with a plurality of groups of auxiliary punch mounting grooves (306) for installing various shapes of auxiliary punch, a plurality of groups of connecting slide bars (308) are linearly installed near the top end of the top plate (304) one side edge, the connecting slide bar (308) is sleeved with a damping damping spring (307) near the bottom end, and the connecting slide bar (308) is connected to the forming die cavity assembly.

2. The automotive sheet metal stamping die of claim 1, wherein: A top plate (304) is installed at the center of the top end of the top plate (304), and a first hydraulic rod (303) is installed at the center of the top end of the top plate (304). The first hydraulic rod (303) is sleeved with a first sheath (302), and the first sheath (302) is installed at the top end of the first sheath (302). The first hydraulic cylinder (301) is connected with the first hydraulic rod (303), and the top plate (304) is provided with an upper positioning groove (305) away from the connecting slide bar (308).

3. The automotive sheet metal stamping die of claim 1, wherein: The installation table (1) is hollow, and two groups of opening and closing doors (101) are symmetrically hinged outside the installation table (1). The outer part of the opening and closing door (101) is provided with a handle (102).

4. The automotive sheet metal stamping die of claim 2, wherein: The installation frame (2) is provided with a ventilation opening (204) penetrating through both sides, and the installation frame (2) is provided with a mounting hole penetrating through the top end for mounting the first sheath (302). The control console (205) is detachably installed on one side edge of the outer part of the installation frame (2).

5. The automotive sheet metal stamping die of claim 4, wherein: The installation frame (2) is provided with a material placing table (201) detachably installed below the ventilation opening (204) on both sides. The bottom end of the material placing table (201) is symmetrically provided with two groups of supporting columns (202), and the bottom end of the supporting column (202) is provided with a fixing plate (203).

6. The automotive sheet metal stamping die of claim 1, wherein: The forming die cavity assembly includes a second hydraulic rod (404), and the second hydraulic rod (404) is sleeved with a second sheath (406). The second sheath (406) is provided with a second hydraulic cylinder (405) outside, and the second hydraulic cylinder (405) is connected with the second hydraulic rod (404).

7. The automotive sheet metal stamping die of claim 1, wherein: The second hydraulic rod (404) is fixedly installed with a main recess (403) at the piston end, and the top end of the main recess (403) is distributed with a plurality of groups of auxiliary recess mounting grooves (407) for installing auxiliary recesses. The outer side of the main recess (403) is sleeved with a recess wall ring (401) located at the top end of the installation table (1), and the outer side of the recess wall ring (401) is provided with a lower positioning groove (402).

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