Automobile part stamping process with positioning mechanism

Abstract

The invention relates to the field of automobile part machining, in particular to an automobile part stamping process with a positioning mechanism, which comprises the following specific steps: S1, placing a plate on a stamping bottom die; s2, all the lifting rods ascend synchronously, all the rotating plates rotate synchronously, and after rotating, the rotating plates are switched from downward inclination to upward inclination and guide the plate to the position over a stamping bottom die; and S3, the punching top die descends and punches the plate on the punching bottom die, the lifting rod descends, the rotating plate rotates and resets to the downward inclined state, and after punching is completed, the punched and formed automobile part is taken out. The punching device does not depend on a sensor, the use cost and the later maintenance cost are reduced, meanwhile, due to the fact that the position of the plate does not need to be detected, rapid positioning of the plate is achieved, and the punching efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of automobile part processing, and particularly relates to an automobile part stamping process with a positioning mechanism. BACKGROUND

[0002] In the automobile part manufacturing process, the stamping process is an important process in the automobile part manufacturing process, and the stamping process mainly relies on a stamping die to perform stamping. However, in the stamping process of the traditional stamping die, the plate is placed between the top die and the bottom die and then subjected to stamping operation. After the product is placed, the position is not completely correct, the plate part may be offset, and then the later stamping is inaccurate, the processing fails or a defective product is generated, and the processing quality of the product is reduced.

[0003] Chinese Patent No. CN222754230U discloses an automobile part stamping die with an offset correction mechanism, which comprises a bottom base plate, a stamping bottom die is fixedly installed at the top of the bottom base plate, a top plate is arranged at the top of the stamping bottom die, a stamping top die corresponding to the stamping bottom die is arranged at the bottom of the top plate, a stamping protrusion is arranged at the bottom of the stamping top die, a stamping cavity is arranged in the middle of the stamping bottom die, a plurality of detection mechanisms are arranged at the corners of the top of the stamping bottom die, each detection mechanism comprises a mounting seat, an installation groove arranged in the middle of the mounting seat, and an infrared sensor arranged in the installation groove, a first deviation correction mechanism is arranged at the top of each side of the stamping bottom die, a second deviation correction mechanism is arranged at the top of the front face of the stamping bottom die and the top of the back face of the stamping bottom die, and the first deviation correction mechanism and the second deviation correction mechanism each comprise a vertical plate, an electric telescopic rod arranged at the top of the vertical plate, and a deviation correction push block connected to the output end of the electric telescopic rod.

[0004] The above scheme ensures that the plate can be automatically positioned before stamping. However, in the process of positioning the plate, the infrared sensor needs to be used for detection first, and then the deviation correction push block is used for correction. The shapes of the plates before stamping are basically the same. Although the positioning of the plate can be completed by using the infrared sensor for detection and then using the deviation correction push block for correction, a plurality of infrared sensors need to be arranged to complete the position detection of the periphery of the plate, the manufacturing cost is high, and when one of the infrared sensors is damaged, the positioning fails, the stability is poor, and the maintenance cost is high. SUMMARY

[0005] In view of the above problems, the automobile part stamping process with a positioning mechanism is provided, four rotating plates are hinged on the four edges of the stamping bottom die, and a lifting rod moving in the vertical direction is arranged below the rotating plate, and a roller is arranged on the upper part of the lifting rod, the rotating plate is rotated by the roller, the friction when the rotating plate is rotated is reduced, the wear of the rotating plate in use is reduced, and the noise generated by the friction when the rotating plate directly contacts with the lifting rod is avoided, when all the rotating plates are rotated to the upward inclined state, all the rotating plates limit the plate above the stamping bottom die, and the sensor is not needed to position the plate.

[0006] To solve the problems in the prior art, the automobile part stamping process with a positioning mechanism is provided, and a kind of automobile part stamping equipment with positioning mechanism is used to implement, the stamping equipment includes stamping bottom die, stamping top die and positioning unit;Positioning unit includes rotating plate, lifting rod and roller; Rotating plate is provided with four, four rotating plates are respectively hinged on the four edges of the stamping bottom die; Lifting rod is provided with four and corresponds to rotating plate one by one, lifting rod is arranged below rotating plate and moves in the vertical direction; Roller is rotatably arranged on the upper part of lifting rod, and roller is rollingly matched with the side wall of rotating plate, rotating plate is driven to rotate by roller when lifting rod is raised and lowered, and the specific steps are as follows: S1, plate is placed on the stamping bottom die; S2, all lifting rods are synchronously raised, and all rotating plates are synchronously rotated, rotating plate is switched from downward inclination to upward inclination after rotating, and plate is guided to the upper side of stamping bottom die; S3, stamping top die is lowered, and plate on stamping bottom die is stamped, lifting rod is lowered, rotating plate is reset to downward inclination state, and automobile part formed by stamping is taken out after stamping is completed.

[0007] The application also relates to an automobile part stamping device with a positioning mechanism, which is stamped by an automobile part stamping process with a positioning mechanism, and the positioning unit comprises rotating plates, lifting rods and rollers. Rotating plate is provided with four, four rotating plates are respectively hinged on the four edges of the stamping bottom die; Lifting rod is provided with four and corresponds to rotating plate one by one, lifting rod is arranged below rotating plate and moves in the vertical direction; Roller is rotatably arranged on the upper part of lifting rod, and roller is rollingly matched with the side wall of rotating plate, rotating plate is driven to rotate by roller when lifting rod is raised and lowered.

[0008] Preferably, the positioning unit further comprises guide rails, guide grooves and extension columns. Guide rail is fixedly arranged on rotating plate along the width direction of rotating plate. The guide groove is arranged on the side wall of the guide rail along the length direction of the guide rail; The extension column is fixedly arranged on the side wall of the lifting rod and extends into the guide groove and is in sliding fit with the guide groove.

[0009] Preferably, the positioning unit further comprises a tooth ring, an articulated rod and a lifting frame; The tooth ring is horizontally rotatably arranged below the stamping bottom die; The bottom of the articulated rod is hingedly connected to the upper part of the tooth ring, and a plurality of articulated rods are arranged; The lifting frame is sleeved on the periphery of the stamping bottom die, and the lifting frame is hingedly connected to the upper part of the articulated rod.

[0010] Preferably, a driving unit for driving the rotation of the tooth ring is arranged on one side of the tooth ring.

[0011] Preferably, the driving unit comprises a first gear and a rotary driver; The first gear is rotatably arranged on one side of the tooth ring, the first gear is in meshing fit with the tooth ring, and the tooth part of the first gear is provided with a toothless section; The rotary driver is arranged at the end of the first gear and is used for driving the rotation of the first gear.

[0012] Preferably, a power assisting unit for driving the reset of the tooth ring is arranged on one side of the tooth ring.

[0013] Preferably, the present application provides a first embodiment, the power assisting unit comprises a coil spring, the coil spring is horizontally arranged on one side of the inner ring of the tooth ring, and the two ends of the coil spring are fixedly connected with the inner ring side wall of the tooth ring and the stamping bottom die respectively.

[0014] Preferably, the present application provides a second embodiment, the power assisting unit comprises a weight, a transmission assembly and a second gear; The weight is movably arranged on one side of the tooth ring along the vertical direction; The transmission assembly is connected with the weight; The second gear is arranged on one side of the tooth ring and is in meshing fit with the tooth ring, and the weight and the second gear are bidirectionally transmitted through the transmission assembly.

[0015] Preferably, an ejection block is movably arranged on the bottom of the stamping bottom die along the vertical direction, and the ejection block is driven by hydraulic pressure.

[0016] The present application has the following beneficial effects compared with the prior art: 1. The application reduces the friction when pushing the rotating plate to rotate, reduces the wear of the rotating plate during use, and avoids the noise caused by friction when the rotating plate directly contacts the lifting rod. When all the rotating plates are tilted upward, the plates are limited above the stamping die, and the sensor is not needed to position the plate. Compared with the traditional positioning method of detecting and positioning, the application does not rely on sensors, reduces the use cost and maintenance cost, and realizes fast positioning of the plate without detecting the position of the plate, improves the stamping efficiency, and the rotating plate is below the stamping die before positioning, which does not affect the placement and removal of the plate, and improves the access speed of the plate.

[0017] 2. By setting the guide rail, guide groove and extension column, the extension column on the side wall of the lifting rod always slides in the guide groove, and the roller always rolls with the side wall of the rotating plate, avoiding the separation of the rotating plate from the roller during the descent of the lifting rod, and avoiding the impact of the rotating plate and the roller after the lifting rod stops descending, prolonging the service life of the rotating plate and the roller.

[0018] 3. By setting the weight, second gear and transmission assembly, when the plate needs to be positioned, the rotating plate is tilted downward, the rotating driver is started, the first gear drives the gear ring to rotate, the gear ring drives the lifting frame to rise through the hinge rod, the lifting frame drives the lifting rod to rise, the roller on the lifting rod pushes the rotating plate to rotate upward, the second gear is driven to rotate by the gear ring, and the first bevel gear and the second bevel gear are driven to rotate, the winding disc winds the traction rope, the weight is lifted, the first gear and the gear ring are disengaged when the first gear rotates to the toothless section, the weight drives the traction rope to be released, and the winding disc rotates, the second gear reversely rotates under the transmission of the first bevel gear and the second bevel gear, and the gear ring is reset. After a long time of use, the weight does not change in quality, the gear ring can always be reset stably, and the rotating plate can always be reset stably. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a three-dimensional schematic view of the automobile parts stamping equipment with a positioning mechanism.

[0020] Figure 2 is a three-dimensional schematic view of the automobile parts stamping equipment with a positioning mechanism. Figure 1 is a local enlarged schematic view of A in the figure.

[0021] Figure 3 is a side view of the automobile parts stamping device with the positioning mechanism.

[0022] Figure 4 is a side view of the automobile parts stamping device with the positioning mechanism. Figure 3 is a sectional view of the automobile parts stamping device with the positioning mechanism.

[0023] Figure 5 is a sectional view of the automobile parts stamping device with the positioning mechanism.

[0024] Figure 6 is a sectional view of the automobile parts stamping device with the positioning mechanism. Figure 5 is a sectional view of the automobile parts stamping device with the positioning mechanism.

[0025] Figure 7 is a sectional view of the automobile parts stamping device with the positioning mechanism.

[0026] Figure 8 is a sectional view of the automobile parts stamping device with the positioning mechanism. Figure 1 .

[0027] Figure 9 is a sectional view of the automobile parts stamping device with the positioning mechanism. Figure 2 .

[0028] Figure 10 is a sectional view of the automobile parts stamping device with the positioning mechanism. Figure 9 is a sectional view of the automobile parts stamping device with the positioning mechanism.

[0029] Reference signs in the drawings are as follows: 1, stamping bottom die; 11, ejector block; 2, stamping top die; 3, positioning unit; 31, rotating plate; 311, guide rail; 312, guide groove; 313, extension column; 32, lifting rod; 33, roller; 34, tooth ring; 35, hinged rod; 36, lifting frame; 37, driving unit; 371, first gear; 3711, toothless section; 372, rotary driver; 38, power-assisted unit; 381, coil spring; 382, weight; 383, transmission assembly; 3831, first bevel gear; 3832, second bevel gear; 3833, winding disc; 3834, traction rope; 384, second gear; 4, plate. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means and specific purposes and functions achieved by the application, the application will be further described in detail below in combination with the drawings and specific embodiments.

[0031] Referring to Figures 1-10 The application relates to a stamping process for automobile parts with a positioning mechanism, which is implemented by a stamping device for automobile parts with a positioning mechanism, wherein the stamping device comprises a stamping bottom die 1, a stamping top die 2 and a positioning unit 3; the positioning unit 3 comprises rotating plates 31, lifting rods 32 and rollers 33. The rotating plates 31 are arranged at four edges of the stamping bottom die 1. The lifting rods 32 are arranged at the lower portions of the rotating plates 31 and correspond to the rotating plates 31 one by one. The rollers 33 are arranged at the upper portions of the lifting rods 32 and roll with the side walls of the rotating plates 31; the rotating plates 31 are driven to rotate by the rollers 33 when the lifting rods 32 are lifted or lowered. S1, placing a plate 4 on the stamping bottom die 1; S2, synchronously lifting all the lifting rods 32 and synchronously rotating all the rotating plates 31; the rotating plates 31 are switched from downward inclination to upward inclination after being rotated and guide the plate 4 to the stamping bottom die 1; S3, lowering the stamping top die 2 to stamp the plate 4 on the stamping bottom die 1; lowering the lifting rods 32 and rotating the rotating plates 31 to reset to the downward inclination state; and taking out the automobile parts stamped and formed.

[0032] Referring to Figures 1-5 The application also relates to a stamping device for automobile parts with a positioning mechanism, which is implemented by a stamping process for automobile parts with a positioning mechanism; the positioning unit 3 comprises rotating plates 31, lifting rods 32 and rollers 33. The rotating plates 31 are arranged at four edges of the stamping bottom die 1. The lifting rods 32 are arranged at the lower portions of the rotating plates 31 and correspond to the rotating plates 31 one by one. The rollers 33 are arranged at the upper portions of the lifting rods 32 and roll with the side walls of the rotating plates 31; the rotating plates 31 are driven to rotate by the rollers 33 when the lifting rods 32 are lifted or lowered.

[0033] In the existing automobile parts stamping process, the main process is to place the plate 4 to be stamped between the stamping bottom die 1 and the stamping top die 2, then make the stamping top die 2 descend and close with the stamping bottom die 1, so as to complete the stamping work, but before stamping, the plate 4 needs to be positioned, otherwise the plate 4 is easy to offset on the stamping bottom die 1, resulting in the position deviation of the plate 4 after stamping. In order to avoid the above situation, the existing stamping equipment is provided with a mechanism for positioning the plate 4, which mainly adopts the way of cooperating sensor and correction push rod to correct the plate 4, or adopts clamping mechanism to limit and clamp the plate 4. However, the clamping mechanism is mostly directly arranged on the stamping bottom die 1, and the clamping mechanism will stretch out from the upper part of the stamping bottom die 1, so that the stamping bottom die 1 and the stamping top die 2 need to be pre-set with slots for the movement of the clamping mechanism, which reduces the strength of the stamping bottom die 1 and the stamping top die 2. Moreover, the existing clamping structure mostly adopts hydraulic drive, and in the production process, the clamping mechanism is driven by hydraulic pressure to clamp, which is easy to cause the damage of the plate 4. If the clamping speed is reduced, the stamping efficiency will be slow. If the sensor and the correction push rod are used, the slots do not need to be opened on the stamping bottom die 1 and the stamping top die 2, which ensures the strength of the stamping bottom die 1 and the stamping top die 2, and can adapt to fast production, that is, through the sensor to detect the position of the plate 4, if the plate 4 placed on the stamping bottom die 1 deviates, the correction push rod at the corresponding position starts and corrects the plate 4. However, in the correction process, the plate 4 is easy to deviate, and the use cost and the later maintenance cost are high. The positioning of the plate 4 completely depends on the sensor, which reduces the stability of the stamping equipment in use.

[0034] In order to avoid the above situation, the existing stamping equipment is redesigned, so that the stamping bottom die 1 and the stamping top die 2 in the stamping equipment do not need to be opened with slots for the movement of the clamping mechanism, which ensures the strength of the stamping bottom die 1 and the stamping top die 2, and can automatically complete the positioning of the plate 4 without sensor detection. When the plate 4 is placed, the rotating plate 31 for positioning will not be above the stamping bottom die 1, which will not block the placing area of the plate 4, improves the placing speed of the plate 4, and reduces the use cost and the later maintenance cost. The specific structure and working process of the present application are as follows: The plate 4 for stamping is of square structure, before stamping, the stamping top die 2 and the stamping bottom die 1 are first in a separated state, that is, the stamping top die 2 is in the highest position, and at this time, the four rotating plates 31 hinged around the stamping bottom die 1 are all in a downward inclined state, the rotating plate 31 is not higher than the upper end surface of the stamping bottom die 1, so in the process of placing the plate 4, the plate 4 will not be hindered by the rotating plate 31, the placing speed of the plate 4 is improved, after the plate 4 is placed, all the lifting rods 32 are synchronously lifted, the lifting rod 32 rotates the rotating plate 31 through the roller 33, under the drive of the roller 33, the rotating plate 31 gradually rotates from the downward inclined state to the upward inclined state, in the process of rotating the rotating plate 31, the part of the plate 4 beyond the stamping bottom die 1 is in contact with the rotating plate 31, the rotating plate 31 in rotation can completely limit the plate 4 above the stamping bottom die 1, then the stamping top die 2 starts to descend and stamps the plate 4 which is positioned, in the process of stamping, the lifting rod 32 descends, the rotating plate 31 starts to reset and rotate, when the stamping is completed, the rotating plate 31 has been in the downward inclined state, which ensures that the rotating plate 31 will not hinder the automobile parts when they are taken out.

[0035] By hinging the rotating plate 31 on the four sides of the stamping bottom die 1, and simultaneously arranging the lifting rod 32 which moves in the vertical direction below the rotating plate 31, and arranging the roller 33 on the upper part of the lifting rod 32, the rotating plate 31 is rotated by the roller 33, which reduces the friction when the rotating plate 31 is rotated, reduces the wear of the rotating plate 31 in the process of use, and simultaneously avoids the noise generated by the friction when the rotating plate 31 directly contacts with the lifting rod 32, when all the rotating plates 31 are rotated to the upward inclined state, all the rotating plates 31 limit the plate 4 directly above the stamping bottom die 1, without relying on the sensor to position the plate 4, compared with the traditional positioning method of detecting and positioning in sequence, the application does not rely on the sensor, which reduces the use cost and the later maintenance cost, and simultaneously, because the position of the plate 4 does not need to be detected, the plate 4 is quickly positioned, the stamping efficiency is improved, in addition, the rotating plate 31 is below the stamping bottom die 1 before positioning, which does not hinder the placing and taking out of the plate 4, and the access speed of the plate 4 is improved.

[0036] Referring to Figure 2 : The positioning unit 3 further comprises a guide rail 311, a guide groove 312 and an extension column 313; The guide rail 311 is fixedly arranged on the rotating plate 31 along the width direction of the rotating plate 31; The guide groove 312 is arranged on the side wall of the guide rail 311 along the length direction of the guide rail 311; The extension column 313 is fixedly arranged on the side wall of the lifting rod 32, and the extension column 313 extends into the guide groove 312 and is in sliding cooperation with the guide groove 312.

[0037] Because the lifting rod 32 needs to move up and down in the process of pushing the rotating plate 31 to rotate, if the guide rail 311, the guide groove 312 and the extension column 313 are not arranged, when the rotating plate 31 completes the positioning of the plate 4 and the lifting rod 32 is lowered, the lifting rod 32 is prone to be lowered first and the rotating plate 31 is prone to be lowered later, which further causes the rotating plate 31 to be separated from the rollers 33 at the upper part of the lifting rod 32, and after the lifting rod 32 stops after being lowered to the lowest position, the rotating plate 31 in the rotating resetting process will collide with the rollers 33, which easily causes the rollers 33 and the rotating plate 31 to be damaged after long-time use. After the guide rail 311, the guide groove 312 and the extension column 313 are arranged, when the lifting rod 32 moves up and down, the extension column 313 arranged on the side wall of the lifting rod 32 always slides in the guide groove 312, and the rollers 33 always roll with the side wall of the rotating plate 31, which avoids the rotating plate 31 from being separated from the rollers 33 in the process that the lifting rod 32 is lowered, and further avoids the rotating plate 31 from colliding with the rollers 33 after the lifting rod 32 stops, thereby prolonging the service life of the rotating plate 31 and the rollers 33.

[0038] With reference to Figure 7 and Figure 8 : The positioning unit 3 further comprises a tooth ring 34, a hinged rod 35 and a lifting frame 36; The tooth ring 34 is horizontally arranged below the stamping bottom die 1; The bottom of the hinged rod 35 is hingedly connected to the upper part of the tooth ring 34, and the hinged rod 35 is provided with a plurality of The lifting frame 36 is sleeved on the periphery of the stamping bottom die 1, and the lifting frame 36 is hingedly connected to the upper part of the hinged rod 35.

[0039] When the rotating plate 31 is inclined downward, the included angle between the hinged rod 35 and the horizontal plane is the smallest at this time, when it is needed to rotate the rotating plate 31 upward, the tooth ring 34 is rotated, the tooth ring 34 pushes the lifting frame 36 to rise through the hinged rod 35, and it is worth noting that because the lifting frame 36 is sleeved on the periphery of the stamping bottom die 1, the lifting frame 36 can only move in the vertical direction. When the rotating plate 31 is rotated to the state of being inclined upward, the included angle between the hinged rod 35 and the horizontal plane is the largest at this time.

[0040] With reference to Figure 5 : A driving unit 37 for driving the tooth ring 34 to rotate is arranged on one side of the tooth ring 34.

[0041] With reference to Figure 8 and Figure 10 : The driving unit 37 comprises a first gear 371 and a rotary driver 372; The first gear 371 is rotationally arranged on one side of the tooth ring 34, the first gear 371 is engaged with the tooth ring 34, and the tooth part of the first gear 371 is provided with a toothless section 3711; The rotating driver 372 is arranged at the end of the first gear 371 and is used to drive the first gear 371 to rotate.

[0042] The rotating driver 372 is preferably a servo motor, when the rotating plate 31 is in the downward inclined state, the rotating driver 372 is started, the rotating driver 372 first drives the gear ring 34 to rotate through the first gear 371, the rotating gear ring 34 pushes the lifting frame 36 to rise through the hinged rod 35, the lifting frame 36 drives the lifting rod 32 to rise, so that the roller 33 on the lifting rod 32 pushes the rotating plate 31 to rotate upward, when the first gear 371 rotates to the toothless section 3711, the first gear 371 and the gear ring 34 are disengaged, the lifting frame 36 starts to descend under the action of its own gravity, the lifting frame 36 pushes the gear ring 34 to reset through the hinged rod 35, so that the rotating driver 372 is always in a one-way driving state, avoiding the need for bidirectional switching for driving when the rotating driver 372 drives the lifting frame 36 to rise and fall through the first gear 371 and the gear ring 34, prolonging the service life of the rotating driver 372.

[0043] It is worth noting that when the lifting frame 36 rises, the included angle between the hinged rod 35 and the horizontal plane is close to 90 degrees, so the rotating speed of the gear ring 34 to reset only by the self-weight of the lifting frame 36 and the rotating plate 31 is slow, so a power assisting unit 38 for assisting the gear ring 34 to reset is arranged on one side of the gear ring 34, and the specific structure of the power assisting unit 38 will be described below.

[0044] Referring to Figure 3 : A power assisting unit 38 for driving the gear ring 34 to reset is arranged on one side of the gear ring 34.

[0045] Referring to Figure 7 : The application provides a first embodiment, the power assisting unit 38 includes a coil spring 381, the coil spring 381 is horizontally arranged on one side of the inner ring of the gear ring 34, and the two ends of the coil spring 381 are fixedly connected with the inner ring side wall of the gear ring 34 and the stamping bottom die 1 respectively.

[0046] When the rotating driver 372 drives the first gear 371 to rotate, the gear ring 34 rotates under the action of the first gear 371, and the lifting frame 36 rises, at this time, the coil spring 381 located on one side of the inner ring of the gear ring 34 is in a gradually shrinking state, when the toothless section 3711 of the first gear 371 rotates to one side of the gear ring 34, the first gear 371 and the gear ring 34 are disengaged, the rotating driver 372 continues to drive the first gear 371 to rotate, and the coil spring 381 drives the gear ring 34 to rotate reversely.

[0047] However, the reset elastic force of the coil spring 381 will gradually decrease after long-term use, based on this, the application provides a second embodiment.

[0048] Referring to Figures 4-6 and Figure 9 The second embodiment of the present application provides a power assisting unit 38 comprising a weight 382, a transmission assembly 383 and a second gear 384. The weight 382 is arranged on one side of the gear ring 34 in a vertical direction. The transmission assembly 383 is connected with the weight 382. The second gear 384 is arranged on one side of the gear ring 34 and engaged with the gear ring 34, and the weight 382 and the second gear 384 are bidirectionally driven through the transmission assembly 383.

[0049] The bidirectional driving of the weight 382 and the second gear 384 through the transmission assembly 383 means that the weight 382 can drive the second gear 384 to rotate through the transmission assembly 383, and the second gear 384 can also drive the weight 382 to move through the transmission assembly 383. The transmission assembly 383 comprises a first bevel gear 3831, a second bevel gear 3832, a winding disc 3833 and a traction rope 3834. The first bevel gear 3831 is fixedly arranged at the upper end of the second gear 384. The second bevel gear 3832 is rotatably arranged on one side of the first bevel gear 3831 and engaged with the first bevel gear 3831. The winding disc 3833 is fixedly arranged at the end of the second bevel gear 3832. The traction rope 3834 is wound around the winding disc 3833, and the lower end of the traction rope 3834 is fixedly connected with the weight 382. When it is needed to position the plate material 4, when the rotating plate 31 is in a downward inclined state, the rotary driver 372 is started. The rotary driver 372 first drives the gear ring 34 to rotate through the first gear 371. The rotating gear ring 34 pushes the lifting frame 36 to rise through the hinged rod 35. The lifting frame 36 drives the lifting rod 32 to rise, so that the roller 33 on the lifting rod 32 drives the rotating plate 31 to rotate upward. At the same time, the gear ring 34 drives the second gear 384 to rotate. Under the transmission of the first bevel gear 3831 and the second bevel gear 3832, the winding disc 3833 winds the traction rope 3834, so that the weight 382 is lifted. When the first gear 371 rotates to the toothless section 3711, the first gear 371 and the gear ring 34 are disengaged. The weight 382 drives the traction rope 3834 to be released, so that the winding disc 3833 is rotated. Under the transmission of the first bevel gear 3831 and the second bevel gear 3832, the second gear 384 is reversely rotated, so that the gear ring 34 is reset to rotate. After a long time of use, the mass of the weight 382 does not change, the gear ring 34 can always be stably reset, and it is also ensured that the rotating plate 31 can always be stably reset.

[0050] Referring to Figure 4 and Figure 5 A knockout block 11 is arranged on the bottom of the stamping bottom die 1 in a vertical direction, and the knockout block 11 is driven by a hydraulic pressure.

[0051] After the completion of stamping, in order to facilitate the smooth demolding of the stamped plate 4, i.e. the automobile parts, the ejector block 11 is vertically moved and arranged at the bottom of the stamping bottom die 1. By rising of the ejector block 11, the automobile parts in the stamping bottom die 1 are ejected, facilitating the taking out of the completed stamping automobile parts.

[0052] Working principle: the plate 4 for stamping is a square structure. Before stamping, the stamping top die 2 and the stamping bottom die 1 are first in a separated state, i.e. the stamping top die 2 is in the highest position, and at this time the four rotating plates 31 hinged around the stamping bottom die 1 are all in a downward inclined state, and the rotating plates 31 are all not higher than the upper end surface of the stamping bottom die 1. Therefore, during the placing of the plate 4, the plate 4 will not be hindered by the rotating plates 31, improving the placing speed of the plate 4. After the plate 4 is placed, all the lifting rods 32 are synchronously raised, and the lifting rods 32 make the rotating plates 31 rotate through the rollers 33. Under the drive of the rollers 33, the rotating plates 31 gradually rotate from the downward inclined state to the upward inclined state. In the process of rotating the rotating plates 31, the part of the plate 4 beyond the stamping bottom die 1 is in contact with the rotating plates 31, and the rotating rotating plates 31 can completely limit the plate 4 above the stamping bottom die 1. Subsequently, the stamping top die 2 begins to descend and stamps the plate 4 which has been positioned. In the process of stamping, the lifting rods 32 descend, and the rotating plates 31 begin to reset and rotate. When the stamping is completed, the rotating plates 31 have been in a downward inclined state, ensuring that the automobile parts will not be hindered by the rotating plates 31 when being taken out.

[0053] The lifting drive principle of the lifting frame 36 is as follows: when the rotating plates 31 are in a downward inclined state and positioning of the plate 4 is needed, the rotary drive 372 is started. The rotary drive 372 first drives the gear ring 34 to rotate through the first gear 371. The rotating gear ring 34 pushes the lifting frame 36 to rise through the hinged rod 35. The lifting frame 36 drives the lifting rod 32 to rise, so that the roller 33 on the lifting rod 32 pushes the rotating plate 31 to rotate upward. At the same time, the gear ring 34 drives the second gear 384 to rotate. Under the transmission of the first bevel gear 3831 and the second bevel gear 3832, the winding disc 3833 winds the traction rope 3834, so that the weight 382 is lifted. When the first gear 371 rotates to the toothless section 3711, the first gear 371 and the gear ring 34 are disengaged. The weight 382 drives the traction rope 3834 to be released, so that the winding disc 3833 rotates. Under the transmission of the first bevel gear 3831 and the second bevel gear 3832, the second gear 384 reversely rotates, so that the gear ring 34 resets and rotates. After a long time of use, the mass of the weight 382 does not change, and the gear ring 34 can always reset stably, which also ensures that the rotating plate 31 can always reset stably.

[0054] The above embodiments only express one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the protection scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An automobile part stamping process with a positioning mechanism, implemented by an automobile part stamping device with a positioning mechanism, the stamping device comprising a stamping bottom die (1), a stamping top die (2) and a positioning unit (3); the positioning unit (3) comprising rotating plates (31), lifting rods (32) and rollers (33); the rotating plates (31) are provided in four, and the four rotating plates (31) are respectively hinged to the four edges of the stamping bottom die (1); the lifting rods (32) are provided in four and correspond to the rotating plates (31) one by one, and the lifting rods (32) are movably arranged below the rotating plates (31) along the vertical direction; the specific steps are as follows: S1, placing a plate (4) on the stamping bottom die (1); S2, synchronously lifting all the lifting rods (32), synchronously rotating all the rotating plates (31), switching the rotating plates (31) from downward inclination to upward inclination after rotating, and guiding the plate (4) to the directly above of the stamping bottom die (1); S3, lowering the stamping top die (2) and stamping the plate (4) on the stamping bottom die (1), lowering the lifting rods (32), rotating the rotating plates (31) to reset to the downward inclination state, and taking out the stamped automobile part after the stamping is completed. The positioning unit (3) comprises rotating plates (31), lifting rods (32) and rollers (33); the rotating plates (31) are provided in four, and the four rotating plates (31) are respectively hinged to the four edges of the stamping bottom die (1); the lifting rods (32) are provided in four and correspond to the rotating plates (31) one by one, and the lifting rods (32) are movably arranged below the rotating plates (31) along the vertical direction; the rollers (33) are rotatably arranged on the upper part of the lifting rods (32), and the rollers (33) are in rolling fit with the side walls of the rotating plates (31), and the lifting rods (32) drive the rotating plates (31) to rotate through the rollers (33) when the lifting rods (32) are lifted and lowered. The positioning unit (3) further comprises guide rails (311), guide grooves (312) and extension columns (313); the guide rails (311) are fixedly arranged on the rotating plates (31) along the width direction of the rotating plates (31); the guide grooves (312) are formed on the side walls of the guide rails (311) along the length direction of the guide rails (311); the extension columns (313) are fixedly arranged on the side walls of the lifting rods (32), and the extension columns (313) extend into the guide grooves (312) and are in sliding fit with the guide grooves (312). The roller (33) is rotatably arranged on the upper part of the lifting rod (32), and the roller (33) is in rolling cooperation with the side wall of the rotating plate (31), and the rotating plate (31) is driven to rotate by the roller (33) when the lifting rod (32) is lifted, characterized in that, The positioning unit (3) further comprises a gear ring (34), hinged rods (35) and a lifting frame (36); the gear ring (34) is horizontally rotatably arranged below the stamping bottom die (1); the bottom of the hinged rod (35) is hinged to the upper part of the gear ring (34), and the hinged rod (35) is provided in multiple; the lifting frame (36) is sleeved on the periphery of the stamping bottom die (1), and the lifting frame (36) is hingedly fitted with the upper part of the hinged rod (35). A driving unit (37) for driving the gear ring (34) to rotate is arranged on one side of the gear ring (34). The driving unit (37) comprises a first gear (371) and a rotary driver (372). ​ 2. A stamping apparatus for a part of an automobile having a positioning mechanism, which is stamped by the stamping process for a part of an automobile having a positioning mechanism as claimed in claim 1, characterized by ​ ​ ​ ​ 3. The automobile parts stamping apparatus having a positioning mechanism according to claim 2, wherein ​ ​ ​ ​ 4. The automobile parts punching device having a positioning mechanism according to claim 2, wherein ​ ​ ​ ​ 5. The automotive parts stamping apparatus having a positioning mechanism according to claim 4, wherein ​ 6. The automotive parts stamping apparatus having a positioning mechanism according to claim 5, wherein ​ The first gear (371) is arranged at one side of the gear ring (34) and engages with the gear ring (34), and the tooth part of the first gear (371) is provided with a toothless section (3711); The rotary driver (372) is arranged at the end of the first gear (371) and is used for driving the first gear (371) to rotate.

7. The automotive parts stamping apparatus having a positioning mechanism according to claim 6, wherein A power assisting unit (38) for driving the gear ring (34) to reset is arranged at one side of the gear ring (34).

8. The automotive parts stamping apparatus having a positioning mechanism according to claim 7, wherein The power assisting unit (38) comprises a coil spring (381), which is horizontally arranged at one side of the inner ring of the gear ring (34) and is fixedly connected with the inner ring side wall of the gear ring (34) and the stamping bottom die (1) at two ends.

9. The automobile parts stamping apparatus having a positioning mechanism according to claim 7, wherein The power assisting unit (38) comprises a weight (382), a transmission assembly (383) and a second gear (384); The weight (382) is vertically arranged at one side of the gear ring (34); The transmission assembly (383) is connected with the weight (382); The second gear (384) is arranged at one side of the gear ring (34) and engages with the gear ring (34), and the weight (382) and the second gear (384) are bidirectionally transmitted through the transmission assembly (383).

10. The automobile parts punching device having a positioning mechanism according to claim 1, characterized in that, An ejection block (11) is vertically arranged at the bottom of the stamping bottom die (1) and is driven by hydraulic pressure.

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