A planetary carrier blank forging apparatus

Abstract

The application relates to the field of a planet carrier forging process, and discloses a planet carrier blank forging equipment which comprises a forging table, a forging press, an upper die, a position adjusting mechanism and a plurality of lower dies, the upper die is connected to the forging table, an upper end groove is formed in the upper die, the plurality of lower dies are all slidingly connected to the forging table, each lower die is provided with a lower end groove, the inclination angles of the groove walls of each lower end groove to the outer side gradually decrease, the position adjusting mechanism is connected to the forging table, the plurality of lower dies are connected to the position adjusting mechanism, and the position adjusting mechanism is used for driving the plurality of lower dies to be sequentially connected to the upper die; and the forging press is connected to the forging table. The application can make the lower end column of the planet carrier blank be sequentially formed in the lower end grooves of the plurality of lower dies, reduce the possibility that the lower end column of the planet carrier blank cannot reach the designed length, and has the effect of improving the yield of the planet carrier blank.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of planet carrier forging process, and particularly relates to a planet carrier blank forging equipment. BACKGROUND

[0002] The planet carrier is one of the main components of the planetary gear transmission device, and when the planet wheel is used as a basic component, the planet carrier is the largest part in the planet row that bears the external torque. The traditional planet carrier uses a casting, which is generally obtained by casting. The internal organization of the casting is non-uniform, the grain is coarse, the service life is short, and the strength and processing quality of the planet carrier are easily affected. Moreover, deformation may occur during use. Therefore, more and more manufacturers begin to use forging process to produce planet carriers.

[0003] At present, the Chinese patent for invention with the publication number CN111482543B discloses a planet carrier forging process, which comprises the following steps: step one, blanking; step two, heating; step three, forging blank; step four, planet carrier blank body forming; step five, upper end face of planet carrier blank body grooving; step six, upper end side wall of planet carrier blank body grooving; step seven, upper end side wall of planet carrier blank body necking; step eight, upper end ring of planet carrier blank body forming; step nine, heat treatment; and step ten, shaping and hole opening.

[0004] In step four, the planet carrier blank body is formed, a bottom die one and a top die one are arranged, a cylindrical groove one is formed in the middle of the bottom die one, a cylindrical long groove one with a diameter smaller than that of the cylindrical groove one is vertically formed at the axial position of the cylindrical groove one, the top die one comprises a pressing column with the same diameter as that of the cylindrical groove, then the blank after rough forging is directly placed in the cylindrical groove one of the base, the blank is continuously forged downward by the pressing column, and the blank is formed into a planet carrier blank body with a stepped columnar shape, the upper end of which has the same diameter as that of the cylindrical groove, and the lower end has the same diameter as that of the cylindrical long groove.

[0005] For the related technologies in the above, the inventors find that the planet carrier blank body mainly comprises an upper end column with the same diameter as that of the cylindrical groove and a lower end column with the same diameter as that of the cylindrical long groove. Since the cylindrical long groove in the bottom die one is directly communicated with the cylindrical groove, the cylindrical long groove and the cylindrical groove lack effective transition, and a large forging pressure is required to forge the forging raw material into the cylindrical long groove. When the forging pressure deviates or the temperature of the forging raw material is low, the forging raw material is likely to fail to completely fill the cylindrical long groove, so that the lower end column of the planet carrier blank body is difficult to reach the designed length, and thus the planet carrier blank body is prone to forging defects. SUMMARY

[0006] In order to alleviate the problem that the lower end column of the planet carrier blank body is difficult to reach the designed length due to the lack of effective transition between the cylindrical long groove and the cylindrical groove, the present application provides a planet carrier blank forging equipment.

[0007] The application provides a planet carrier blank forging equipment adopting the technical scheme as follows:

[0008] The planet carrier blank forging equipment comprises a forging table, a forging press, an upper die, a position adjusting mechanism and a plurality of lower dies, the upper die is connected to the forging table, an upper end groove is formed in the upper die, the plurality of lower dies are all slidingly connected to the forging table, each lower die is provided with a lower end groove, the inclination angle of the groove wall of each lower end groove gradually decreases from outside to inside, the position adjusting mechanism is connected to the forging table, the plurality of lower dies are connected to the position adjusting mechanism, and the position adjusting mechanism is used to drive the plurality of lower dies to be sequentially connected to the upper die; and the forging press is connected to the forging table and used to forge the forging raw material placed between the upper die and the lower dies.

[0009] By adopting the above technical scheme, when the planet carrier blank is forged, the lower die with a larger inclination angle of the lower end groove is connected to the upper die, and the forging raw material is put into the lower die and the upper die, so that the forging press can preliminarily forge the forging raw material, and after the preliminary forging, the forging raw material is sequentially put into the plurality of lower dies according to the order of the gradually decreasing inclination angle, so that the lower end column of the planet carrier blank can be sequentially formed in the plurality of lower end grooves, the formation of the lower end column is facilitated, the possibility that the lower end column of the planet carrier blank cannot reach the designed length is reduced, and the yield of the planet carrier blank is improved.

[0010] Preferably, the forging table is fixedly connected with a supporting mechanism, the supporting mechanism comprises a supporting column and a driving member, the supporting column is fixedly connected to the forging table, the upper die is slidingly connected to the supporting column, and the driving member is connected to the supporting column and connected to the upper die to drive the upper die to ascend and descend.

[0011] By adopting the above technical scheme, when the planet carrier blank is forged, the upper die is driven to descend by the driving member, so that the upper die is connected to the lower die, thereby ensuring the stable forging of the forging raw material, and when the lower die needs to be replaced, the lower die is driven to ascend by the driving member, so that the lower die can be replaced.

[0012] Preferably, the position adjusting mechanism comprises a forging disc and a rotating assembly, the forging disc is rotationally connected to the forging table, the plurality of lower dies are fixedly connected to the forging disc, and the rotating assembly is connected to the forging table and connected to the forging disc to drive the forging disc to rotate.

[0013] By adopting the above technical scheme, when the raw material blank is forged, the forging disc is driven to rotate by the rotating assembly, so that the plurality of lower dies are moved, and the lower dies can be replaced, thereby improving the convenience of replacing the lower dies.

[0014] Preferably, the upper die is provided with a locking mechanism, the locking mechanism comprises a second motor, a bidirectional screw rod and two sliding blocks, the second motor is fixedly connected to the upper die, the bidirectional screw rod is rotatably connected to the upper die, the second motor is in transmission connection with the bidirectional screw rod, the two sliding blocks are in sliding connection with the upper die, the two sliding blocks are in threaded connection with the bidirectional screw rod, the threads of the two sliding blocks and the bidirectional screw rod are opposite in rotation direction, each sliding block is fixedly connected with a locking block, each lower die is provided with two locking grooves, the two locking grooves on the same lower die are arranged in one-to-one correspondence with the two locking blocks, and the locking block is matched with the corresponding locking groove.

[0015] By adopting the above technical scheme, after the driving member drives the upper die to move downward to butt the upper die and the lower die, the second motor is started, the main shaft of the second motor is rotated to drive the bidirectional screw rod fixedly connected coaxially with the main shaft to rotate, and then the two sliding blocks are driven to move, so that the two locking blocks are driven to slide and insert into the two locking grooves, thereby realizing the locking of the upper die and the lower die, and avoiding that a large gap is generated between the upper die and the lower die during forging, thereby affecting the forging quality of the planet carrier blank.

[0016] Preferably, each sliding block is provided with an adjusting assembly, and each adjusting assembly comprises a third motor and a supporting block, the third motor is fixedly connected to the sliding block, the supporting block is rotatably connected to the sliding block, the third motor is in transmission connection with the supporting block to drive the supporting block to rotate, and the locking block is fixedly connected to the supporting block.

[0017] By adopting the above technical scheme, the third motor is used to drive the supporting block to rotate, so that the supporting block drives the locking block and the clamping jaw to rotate, so that the locking block and the clamping jaw can interchange positions, during the forging of the forging blank, the locking of the upper die and the lower die is realized by the cooperation of the locking block and the locking groove, and the stability of the upper die and the lower die during forging is ensured; when the lower die needs to be replaced, after the driving member drives the upper die to move upward by a distance, the second motor is used to drive the two clamping jaws to move in the direction of approaching each other, so that the two clamping jaws clamp the forging raw material, thereby the forging raw material can be taken out from the two lower dies at the same time, and the replacement of the lower die is facilitated.

[0018] Preferably, each of the lower molds is provided with a heat preservation mechanism, each set of heat preservation mechanisms comprises two heat preservation plates and two sets of pushing assemblies, the two heat preservation plates are slidingly connected to the lower mold, the two heat preservation plates move along the direction of approaching or moving away from each other to close the lower end groove formed in the lower mold, the two sets of pushing assemblies are connected to the lower mold, the two sets of pushing assemblies are provided in one-to-one correspondence with the two heat preservation plates, and the pushing assembly is connected with the corresponding heat preservation plate to drive the heat preservation plate to slide.

[0019] By adopting the above technical scheme, the two heat preservation plates are slidingly connected to the lower mold, after the corresponding lower mold is used, the two pushing assemblies are used to drive the two heat preservation plates to move along the direction of approaching each other, so that the two heat preservation plates can block the slot of the lower end groove, the speed of heat dissipation in the lower end groove is reduced, so that a higher temperature can be maintained in each lower end groove, the possibility that the surface temperature of the forging raw material is instantaneously reduced due to the lower temperature of the lower end groove wall during the forging process of the forging raw material is reduced, the mechanical property loss of the surface of the forging raw material is reduced, and the quality of the planet carrier after forging is improved.

[0020] Preferably, each set of the pushing assemblies comprises a first gear, a first toothed bar, a second gear, a second toothed bar and a first spring, the first gear is rotatably connected in the lower mold, the first toothed bar is fixedly connected with the heat preservation plate, the first gear is in meshing connection with the first toothed bar, the second gear is coaxially fixedly connected with the first gear, the second toothed bar is slidingly connected to the lower mold, the second toothed bar is perpendicular to the ground, the second toothed bar slides along the length direction of the second toothed bar, the first spring is arranged between the second toothed bar and the lower mold, the first spring applies a pushing force to the second toothed bar to extend out of the lower mold, when the second toothed bar extends out of the lower mold under the pushing of the first spring, the two heat preservation plates block the lower end groove.

[0021] By adopting the technical scheme, when the lower die is not used, the second rack is extended into the lower die under the pushing of the first spring, and at this time, the two heat preservation plates seal the lower end groove; when the lower die needs to be used, when the corresponding lower die is moved to below the upper die by the forging disc, the driving member drives the upper die to move downward, and in the process of abutting the upper die and the lower die, the upper die will first contact the second rack, the second rack slides downward under the pressing of the upper die, the movement of the second rack drives the second gear meshing connected therewith to rotate, the rotation of the second gear drives the first gear coaxially fixed connected therewith to rotate, the rotation of the first gear drives the first rack to slide, thereby driving the two heat preservation plates to slide, so that the two heat preservation plates open the lower end groove along with the downward movement of the upper die, so that the forging raw material can be put into the lower end groove, and the smooth forging of the forging raw material is ensured; after the forging is completed, in the process of driving the upper die to move upward by the electric push cylinder, the two second racks move back upward under the pushing of the first spring corresponding thereto, that is, the two heat preservation plates are driven to move back by the transmission of the first gear and the second gear, so that the two heat preservation plates seal the lower groove.

[0022] Preferably, the forging disc is internally provided with a storage cavity, each lower die is provided with a blanking groove, and the lower end groove of each lower die is communicated with the storage cavity through the blanking groove.

[0023] By adopting the technical scheme, the storage cavity is internally provided in the forging disc, and in the forging process, iron filings are often generated from the forging raw material and fall off the forging raw material, part of the fallen iron filings will fall into the storage cavity from the blanking groove, and the high-temperature heat in the iron filings will diffuse in the storage cavity and enter the lower end groove, thereby further reducing the cooling rate in the lower end groove.

[0024] Preferably, each lower die is provided with a sealing mechanism for sealing the blanking groove, the sealing mechanism comprises a sealing block, a second spring and a pull rope, the sealing block is provided in the lower die, the sealing block is in sliding connection with the lower die, the second spring is arranged between the lower die and the sealing block, the second spring applies a pushing force to the lower die to make the sealing block seal the blanking groove, and the pull rope is connected between the sealing block and one of the second racks, when the first spring pushes the second rack to extend out of the lower die, the sealing block slides out of the blanking groove under the pulling of the pull rope.

[0025] By adopting the technical scheme, when the upper die and the lower die are abutted, the second rack is retracted into the lower die, at this time, the sealing block seals the blanking groove, and the forming length of the planet carrier blank body lower end column is ensured, when the first spring pushes the second rack to move upward after the use of the lower die is completed, the second rack drives the sealing member to move back through the pull rope, so that the blanking groove is opened, and the iron filings at the bottom of the lower end groove can smoothly enter the storage cavity through the blanking groove.

[0026] In summary, the present application includes at least the following technical effects:

[0027] 1. By setting multiple lower molds on the forging disc, when the planet carrier blank is forged, the forging raw material is sequentially put into the multiple lower molds according to the order of gradually decreasing inclination angles, so that the lower end column of the planet carrier blank can be sequentially formed in the multiple lower end grooves, facilitating the formation of the lower end column, reducing the possibility that the lower end column of the planet carrier blank cannot reach the designed length, and improving the yield of the planet carrier blank;

[0028] 2. By slidingly connecting two heat preservation plates on the lower mold, after the corresponding lower mold is used, the two heat preservation plates can be moved in the direction of approaching each other by using two pushing assemblies, so that the two heat preservation plates can block the slot of the lower end groove, reducing the heat dissipation speed in the lower end groove, so that each lower end groove can maintain a high temperature, reducing the possibility that the surface temperature of the forging raw material will be instantaneously reduced due to the lower temperature of the lower end groove wall during the forging process, reducing the loss of mechanical properties of the surface of the forging raw material, and improving the quality of the planet carrier after forging;

[0029] 3. By providing a storage cavity in the interior of the forging disc, iron filings will fall from the forging raw material during the forging process, and part of the falling iron filings will fall into the storage cavity through the setting of the dropping groove, and the high-temperature heat in the iron filings will be diffused in the storage cavity and can enter the lower end groove, thereby further reducing the cooling rate in the lower end groove. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the cross-sectional structure of the lower mold in the embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the structure of the rotating assembly in the embodiment of the present application;

[0033] Figure 4 is a schematic diagram of the structure of the locking mechanism in the embodiment of the present application;

[0034] Figure 5 is a schematic diagram of the structure of the adjusting assembly in the embodiment of the present application;

[0035] Figure 6 is a schematic diagram of the structure of the heat preservation mechanism in the embodiment of the present application;

[0036] Figure 7 is a schematic diagram of the structure of the pushing assembly in the embodiment of the present application;

[0037] Figure 8 This is a schematic diagram of the blocking mechanism in the embodiments of this application;

[0038] Figure 9 This is a schematic cross-sectional view of the forging disc in an embodiment of this application.

[0039] Reference numerals: 100, forging table; 200, forging press; 300, upper die; 310, upper end groove; 400, lower die; 410, lower end groove; 420, blanking chute; 500, adjusting mechanism; 510, forging disc; 511, storage cavity; 520, rotating assembly; 521, first motor; 522, transmission gear; 600, support mechanism; 610, support column; 620, driving component; 621, electric push cylinder; 700, locking mechanism; 710, second motor; 720, double-acting lead screw; 73 0. Slider; 740. Locking block; 750. Adjusting component; 751. Third motor; 752. Support rod; 753. Support block; 754. Gripper; 800. Insulation mechanism; 810. Insulation board; 820. Pushing component; 821. First gear; 822. First rack; 823. Second gear; 824. Second rack; 825. First spring; 900. Sealing mechanism; 910. Sealing block; 920. Second spring; 930. Pull rope; 940. Pulling rod; 950. Third spring. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0041] This application discloses a planetary carrier blank forging equipment.

[0042] Reference Figure 1 and Figure 2 A planetary carrier blank forging device includes a forging table 100, on which an upper die 300 is mounted. The upper die 300 has an upper end groove 310, which limits the planetary carrier blank to ensure that the upper end column can be smoothly formed within the upper end groove 310. Multiple lower dies 400 are mounted on the forging table 100, each with a lower end groove 410. The angle between the sidewall of each lower end groove 410 and its own axis decreases sequentially. An adjusting mechanism 500 is mounted on the forging table 100 to drive the multiple lower dies 400 to align sequentially with the upper die 300. A forging press 200 is mounted on the forging table 100 to forge the planetary carrier blank placed between the upper die 300 and the lower dies 400.

[0043] Reference Figure 1 and Figure 3, the adjusting mechanism 500 comprises a forging disc 510 coaxially connected to the forging table 100, the rotating axis of the forging disc 510 is vertically arranged, the plurality of lower molds 400 are fixedly connected to the forging disc 510, and the plurality of lower molds 400 are arranged at intervals with the rotating axis of the forging disc 510 as the center. The rotating assembly 520 is installed on the forging table 100, the rotating assembly 520 comprises a rotating column coaxially fixedly connected to the forging disc 510, and the rotating column is rotatably connected to the forging table 100. The first motor 521 is fixedly connected to the forging table 100, the main shaft of the first motor 521 is coaxially fixedly connected with a transmission gear 522, another transmission gear 522 is coaxially fixedly connected to the rotating column, and the two transmission gears 522 are meshedly connected.

[0044] With reference to Figure 1 and Figure 3 , the supporting mechanism 600 is installed on the forging table 100, the supporting mechanism 600 comprises a supporting column 610, the supporting column 610 is fixedly connected to the forging table 100 through the forging disc 510 and the rotating rod, and the forging disc 510 and the rotating rod are rotatably connected to the supporting column 610. The driving member 620 is fixedly connected to the supporting column 610, the driving member 620 is connected with the upper mold 300 to drive the upper mold 300 to reciprocatingly ascend and descend, and the driving member 620 is an electric push cylinder 621 in the embodiment, the electric push cylinder 621 is fixedly connected to the supporting column 610, and the piston rod of the electric push cylinder 621 is fixedly connected with the upper mold 300. The locking mechanism 700 is installed on the upper mold 300, and the locking mechanism 700 is used for locking the upper mold 300 and one of the lower molds 400.

[0045] When the planet carrier embryo is forged, first, the first motor 521 is used to drive the transmission gear 522 fixedly connected coaxially with the planet carrier embryo to rotate, then the transmission gears 522 are matched to drive the forging disc 510 to rotate, so that the lower mold 400 with the largest included angle between the side wall of the lower end groove 410 and the axis thereof is moved to the lower side of the upper mold 300, then the locking mechanism 700 is used to lock the upper mold 300 and the corresponding lower mold 400, the upper end groove 310 in the upper mold 300 is communicated with the lower end groove 410 in the lower mold 400, then the forging raw material is put into the upper mold 300, then the forging press 200 is started, and the forging raw material in the upper mold 300 and the lower mold 400 is forged by the forging press 200, so that the forging is formed away from the lower mold 400 and the upper mold 300, then the upper mold 300 and the lower mold 400 are separated, the forging disc 510 is driven to rotate, so that the forging disc 510 drives the next lower mold 400 to be abutted and locked with the upper mold 300, then the forging raw material is put into the lower end groove 410 in the next lower mold 400, so that the forging raw material is formed step by step, the side wall of the lower end groove 410 in the lower mold 400 is gradually reduced, so that the lower end column of the planet carrier embryo can be formed step by step in the lower end groove 410, thereby the forging raw material is forged into the lower end groove 410, the lower end column is formed, the possibility that the lower end column of the planet carrier embryo cannot reach the designed length is reduced, and the yield of the planet carrier embryo is improved.

[0046] With reference to Figure 3 , Figure 4 and Figure 5 , the locking mechanism 700 comprises a second motor 710 fixedly connected to the upper mold 300, a bidirectional screw 720 coaxially fixedly connected to the main shaft of the second motor 710, the bidirectional screw 720 being rotatably connected to the side wall of the upper mold 300, two sliding blocks 730 being threadedly connected to the bidirectional screw 720, the two sliding blocks 730 being slidably connected to the upper mold 300, the threads connected between the two sliding blocks 730 and the bidirectional screw 720 being opposite in rotation direction, a locking block 740 being fixedly connected to each sliding block 730, two locking holes being formed in each lower mold 400, the locking holes in the same lower mold 400 being one-to-one correspondingly arranged with the two locking blocks 740, and the corresponding lower mold 400 being locked with the upper mold 300 as a whole after the two locking blocks 740 are inserted into the two locking holes in the lower mold 400.

[0047] With reference to Figure 3 , Figure 4 and Figure 5The adjusting assembly 750 is arranged on each slider 730, and the adjusting assembly 750 comprises a third motor 751 fixedly connected to one side of the slider 730, a support rod 752 coaxially fixedly connected to a main shaft of the third motor 751, the support rod 752 being rotationally connected to the slider 730, the rotation axis of the support rod 752 being perpendicular to the rotation axis of the bidirectional lead screw 720 and parallel to the ground, a support block 753 fixedly connected to the support rod 752, the support block 753 rotating with the support rod 752, the locking block 740 being fixedly connected to one end of the support block 753, and a clamping jaw 754 fixedly connected to the other end of the support block 753 away from the locking block 740, the clamping jaw 754 being used for clamping the forging raw material. When the forging raw material is forged, the locking block 740 is located close to the lower die 400, and then the second motor 710 drives the bidirectional lead screw 720 to rotate and drives the two locking blocks 740 to be inserted into the two locking holes of the lower die 400, so that the upper die 300 is locked with the corresponding lower die 400. When the forging of the forging raw material in one of the lower dies 400 is completed, and the lower die 400 needs to be replaced for forging, the third motor 751 is used to drive the support rod 752 to rotate, so as to drive the support block 753 to rotate, and the locking block 740 and the clamping jaw 754 are turned over. Then, the electric push cylinder 621 drives the upper die 300 to rise by a distance, and then the second motor 710 drives the support rod 752 to rotate, so as to drive the two clamps to move in the direction of approaching each other, so that the two clamps clamp the forging raw material, and then the forging raw material is lifted, so that the forging raw material can be put into the next lower die 400 for forging.

[0048] With reference to Figure 1 and Figure 6 When one of the lower dies 400 is used and waits for the next use, because the top of each lower end groove 410 is in an open state, the heat in the lower die 400 will quickly dissipate, especially in cold weather. If the temperature of each lower end groove 410 is low, the surface of the forging raw material will instantaneously reduce the temperature of the surface of the forging raw material when the surface of the forging raw material abuts against the side surface of each lower end groove 410, which causes the surface of the forging raw material to easily lose mechanical properties, and even cracks. Therefore, the heat preservation mechanism 800 is arranged on each lower die 400.

[0049] With reference to Figure 1 and Figure 6Each set of heat preservation mechanism 800 includes two heat preservation plates 810, both of which are slidingly connected to the top of the lower mold 400, both of which are horizontally arranged, and both of which are located on opposite sides of the lower mold 400. The two heat preservation plates 810 jointly close the opening of the lower end groove 410 on the top of the lower mold 400. The lower mold 400 is provided with two push assemblies 820, and the two sets of push assemblies 820 are arranged one-to-one with the two heat preservation plates 810. The two heat preservation plates 810 are driven by the two push assemblies 820 to move in the direction of approaching or moving away from each other.

[0050] With reference to Figure 6 and Figure 7 Each set of push assembly 820 includes a first gear 821 rotatingly connected to the lower mold 400, and the rotation axis of the first gear 821 is parallel to the ground. The bottom of the heat preservation plate 810 is fixedly connected with a first rack 822, and the length direction of the first rack 822 is parallel to the length of the heat preservation plate 810. The first rack 822 is in meshing connection with the first gear 821. The first gear 821 is coaxially fixedly connected with a second gear 823, and the top wall of the lower mold 400 is provided with a second rack 824, which is vertically arranged and slidingly connected to the lower mold 400. The second rack 824 is in meshing connection with the second gear 823. The lower mold 400 is provided with a first spring 825, which is vertically arranged. One end of the first spring 825 is fixedly connected to the lower mold 400, and the other end of the first spring 825 is fixedly connected with the second rack 824. The second rack 824 is pushed out of the lower mold 400 by the first spring 825. When the second rack 824 is pushed out of the lower mold 400 by the first spring 825, the heat preservation plate 810 covers the opening of the lower end groove 410 of the lower mold 400.

[0051] When the lower die 400 is not used, the two heat preservation plates 810 are abutted to each other under the pushing force of the two first springs 825 to block the notch of the lower end groove 410, so that the outside cold air cannot enter the lower end groove 410, thereby reducing the cooling rate of the lower end groove 410 of each lower die 400 and ensuring the forging quality of the planet carrier blank; when the lower die 400 needs to be used, the rotation of the forging disc 510 rotates the lower die 400 to be used to the lower side of the upper die 300, and then the electric push cylinder 621 drives the upper die 300 to move downward, the downward movement of the upper die 300 drives the two second racks 824 to move downward synchronously, the downward movement of the second rack 824 drives the second gear 823 meshed and connected thereto to rotate, thereby driving the first gear 821 coaxially fixedly connected thereto to rotate, the rotation of the first gear 821 drives the first rack 822 meshed and connected thereto to slide, thereby driving the two sliding plates to move in the direction away from each other, so that the lower end groove 410 is opened, and the forging material can be gradually put into the lower end groove 410 through the opening of the two heat preservation plates 810, thereby ensuring the smooth forging of the forging material; after the forging is completed, the two second racks 824 are moved upward under the pushing of the first spring 825 corresponding thereto during the upward movement of the upper die 300 driven by the electric push cylinder 621, and the two heat preservation plates 810 are moved back through the transmission of the first gear 821 and the second gear 823, so that the two heat preservation plates 810 block the lower notch.

[0052] With reference to Figure 1 The forging disc 510 is internally provided with a storage cavity 511, and the bottom of each lower die 400 is provided with a material falling groove 420. The material falling groove 420 is a vertical cylindrical groove, and the lower end of each material falling groove 420 is in communication with the inside of the storage cavity 511. During the forging of the forging piece, the iron filings generated by the forging pressure of the forging piece will fall into the storage cavity 511 through the material falling groove 420, the heat of the iron filings will be diffused in the forging disc 510, thereby entering each lower end groove 410, further reducing the cooling rate of the lower end groove 410, and improving the forging quality of the planet carrier blank.

[0053] With reference to Figure 8 and Figure 9, in order to avoid the blanking groove 420 to the planet carrier blank lower end column forming caused by the influence, the lower die 400 is installed with a blocking mechanism 900, the blocking mechanism 900 includes the blocking block 910 through the inside of the lower die 400, the blocking block 910 is connected in the inside of the lower die 400, the blocking block 910 is used to blanking groove 420 is opened in the lower die 400 is blocked, the second spring 920 is installed in the lower die 400, the second spring 920 is horizontally arranged, one end of the second spring 920 is fixedly connected with the lower die 400, the other end of the second spring 920 is fixedly connected with the blocking block 910, the second spring 920 exerts a pushing force on the blocking block 910 to make the blocking block 910 inserted into the blanking groove 420. The blocking block 910 is fixedly connected with a pull rope 930, one end of the pull rope 930 away from the blocking block 910 is connected with one of the second rack 824. The pushing force of the first spring 825 on the first rack 822 is greater than the pushing force of the second spring 920 on the blocking block 910. During the forging process of the forging raw material, if the blanking groove 420 is not blocked, the forging raw material is often forged into the blanking groove 420, which affects the forming of the planet carrier blank. By arranging the blocking block 910, when the upper die 300 and the lower die 400 are connected by the electric push cylinder 621, the blocking block 910 moves to the inside of the blanking groove 420 under the pushing of the second spring 920, and the blanking groove 420 is blocked, so as to ensure the forming quality of the planet carrier; after the lower die 400 is used, when the first spring 825 pushes the second rack 824 to move upward, the pull rope 930 is pulled to move synchronously, so that the pull rope 930 pulls the blocking block 910 to move back, and then the blanking groove 420 is opened, and the iron filings at the bottom of the lower end groove 410 can smoothly enter the storage cavity 511 through the blanking groove 420.

[0054] Referring to Figure 8 and Figure 9 , in order to further increase the pulling force applied to the blocking block 910, a pulling rod 940 is fixedly connected to the second rack 824, the pulling rod 940 is horizontally arranged, and one end of the pull rope 930 away from the blocking block 910 is fixedly connected with the pulling rod 940. A plurality of third springs 950 are installed in the lower die 400, the plurality of third springs 950 are arranged along the length direction of the pulling rod 940, one end of each third spring 950 is fixedly connected with the lower die 400, and the other end of each third spring 950 is fixedly connected with the pulling rod 940. The third spring 950 exerts an upward pushing force on the pulling rod 940 to increase the pulling force on the blocking block 910. By arranging a plurality of third springs 950, the pushing force on the pulling rod 940 is increased, the pushing force on the gear is increased, and the pulling force for moving the blocking block 910 back is ensured.

[0055] The implementation principle of the planet carrier blank forging equipment embodiment of the present application is as follows: a plurality of lower molds 400 are arranged on the forging disc 510, and the inclination angles of the groove walls of the lower end grooves 410 in the plurality of lower molds 400 gradually decrease, when the planet carrier blank is forged, the lower mold 400 with the largest inclination angle of the lower end groove 410 is first connected with the upper mold 300, then the forging raw material is put into the upper mold 300 and the lower mold 400, then the forging press 200 is started, and the forging raw material in the upper mold 300 and the lower mold 400 is forged by the forging press 200, so that the forging is far away from the preliminary forming in the lower mold 400 and the upper mold 300, then the upper mold 300 and the lower mold 400 are separated, the forging disc 510 is driven to rotate, the next lower mold 400 is connected and locked with the upper mold 300, and then the forging raw material is put into the lower end groove 410 of the next lower mold 400, so that the next step of forging forming can be performed on the forging raw material, by putting the forging raw material into the plurality of lower molds 400 in sequence, and by gradually decreasing the angle between the side wall of the lower end groove 410 and the axis of the lower mold 400, the lower end column of the planet carrier blank can be gradually formed in the plurality of lower end grooves 410, so that the forging raw material can be forged into the lower end groove 410, the forming of the lower end column is facilitated, the possibility that the lower end column of the planet carrier blank cannot reach the designed length is reduced, and the yield of the planet carrier blank is improved.

[0056] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A planetary carrier blank forging apparatus, characterized by: The application relates to a forging device which comprises a forging table (100), a forging press (200), an upper die (300), a position adjusting mechanism (500) and a plurality of lower dies (400), the upper die (300) is connected to the forging table (100), an upper end groove (310) is arranged in the upper die (300), the plurality of lower dies (400) are all slidingly connected to the forging table (100), each lower die (400) is provided with a lower end groove (410), the inclination angle of the groove wall of each lower end groove (410) gradually decreases from outside to inside, the position adjusting mechanism (500) is connected to the forging table (100), the plurality of lower dies (400) are connected to the position adjusting mechanism (500), and the position adjusting mechanism (500) is used for driving the plurality of lower dies (400) to be sequentially connected to the upper die (300); the forging press (200) is connected to the forging table (100), and the forging press (200) is used for forging a forging raw material placed between the upper die (300) and the lower dies (400). A supporting mechanism (600) is fixedly connected to the forging table (100), the supporting mechanism (600) comprises a supporting column (610) and a driving piece (620), the supporting column (610) is fixedly connected to the forging table (100), the upper die (300) is slidingly connected to the supporting column (610), the driving piece (620) is connected to the supporting column (610), and the driving piece (620) is connected to the upper die (300) to drive the upper die (300) to ascend and descend; The position adjusting mechanism (500) comprises a forging disc (510) and a rotating assembly (520), the forging disc (510) is rotationally connected to the forging table (100), the plurality of lower dies (400) are all fixedly connected to the forging disc (510), the rotating assembly (520) is connected to the forging table (100), and the rotating assembly (520) is connected to the forging disc (510) to drive the forging disc (510) to rotate. The upper mold (300) is provided with a locking mechanism (700), the locking mechanism (700) comprises a second motor (710), a bidirectional screw rod (720) and two sliders (730), the second motor (710) is fixedly connected on the upper mold (300), the bidirectional screw rod (720) is rotatably connected on the upper mold (300), the second motor (710) is in transmission connection with the bidirectional screw rod (720), two sliders (730) are slidably connected with the upper mold (300), two sliders (730) are in threaded connection with the bidirectional screw rod (720), the threads of the two sliders (730) connected with the bidirectional screw rod (720) are opposite in rotation direction, a locking block (740) is fixedly connected on each slider (730), two locking grooves are formed on each lower mold (400), two locking grooves on the same lower mold (400) are correspondingly provided with two locking blocks (740), and the locking block (740) is matched with the corresponding locking groove. An adjusting assembly (750) is arranged on each slider (730), each adjusting assembly (750) comprises a third motor (751) and a supporting block (753), the third motor (751) is fixedly connected on the slider (730), the supporting block (753) is rotatably connected on the slider (730), the third motor (751) is in transmission connection with the supporting block (753) to drive the supporting block (753) to rotate, the locking block (740) is fixedly connected on the supporting block (753), and a clamping jaw (754) is fixedly connected on the side, away from the locking block (740), of the supporting block (753).

2. A planetary carrier blank forging apparatus according to claim 1, characterized by: Each lower mold (400) is provided with a heat preservation mechanism (800), each heat preservation mechanism (800) comprises two heat preservation plates (810) and two groups of pushing assemblies (820), two heat preservation plates (810) are slidably connected on the lower mold (400), the two heat preservation plates (810) are moved along the direction of approaching or moving away from each other to close the lower end groove (410) formed on the lower mold (400), two groups of pushing assemblies (820) are connected on the lower mold (400), two groups of pushing assemblies (820) are correspondingly provided with two heat preservation plates (810), and the pushing assembly (820) is connected with the corresponding heat preservation plate (810) to drive the heat preservation plate (810) to slide.

3. A planetary carrier blank forging apparatus according to claim 2, characterised in that: Each of the push assemblies (820) comprises a first gear (821), a first rack (822), a second gear (823), a second rack (824) and a first spring (825), the first gear (821) is rotationally connected in the lower mold (400), the first rack (822) is fixedly connected with the heat preservation plate (810), the first gear (821) is meshingly connected with the first rack (822), the second gear (823) is coaxially fixedly connected with the first gear (821), the second rack (824) is slidingly connected on the lower mold (400), the second rack (824) is perpendicular to the ground, the second rack (824) slides along the length direction of itself, the first spring (825) is arranged between the second rack (824) and the lower mold (400), the first spring (825) applies a pushing force to the second rack (824) to extend out of the lower mold (400), when the second rack (824) extends out of the lower mold (400) under the pushing of the first spring (825), the two heat preservation plates (810) block the lower end groove (410).

4. A planetary carrier blank forging apparatus according to claim 3, characterized in that: The forging disc (510) is internally provided with a storage cavity (511), each of the lower molds (400) is provided with a blanking groove (420), and the lower end groove (410) of each of the lower molds (400) is in communication with the storage cavity (511) through the blanking groove (420) formed by itself.

5. A planetary carrier blank forging apparatus according to claim 4, characterised in that: Each of the lower molds (400) is provided with a blocking mechanism (900) for blocking the blanking groove (420).

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