A stamping device for post-processing of castings

Abstract

The present invention discloses a stamping device for post-processing of castings, comprising a pedestal, a supporting frame, and an automatic pressing and locking mechanism. A main moving frame is driven by a first hydraulic cylinder to slide back and forth horizontally on a guide rod of the supporting frame, and a secondary moving frame is driven by a second hydraulic cylinder to slide back and forth vertically in the middle of the main moving frame. The automatic pressing and locking mechanism drives the top mold fixed thereon to form a rotating structure on the transverse frame of the secondary moving frame. The automatic pressing and locking mechanism cooperates with the top mold to automatically pick up and fix the center opening of the spoke in the hub casting by pressing and locking, and drives the hub casting to directly dock with the bottom mold for positioning and fixing during material discharge. The stamping device for post-processing of castings adopts automatic pressing and locking to pick up and fix the hub casting, thereby avoiding deformation or scratching of the rim in the hub casting. In addition, when the rim is pushed to be demolded, the spoke is simultaneously lifted and demolded to ensure that the rim and the spoke are evenly stressed during demolding.

Description

Technical Field

[0001] The present invention relates to the technical field related to stamping processing of castings, and in particular to a stamping device for post-processing of castings. Background Art

[0002] The casting process is to inject molten liquid metal into a pre-designed mold, wait for the liquid metal to cool and solidify, and then obtain parts of the desired shape and size. Castings are metal parts made using this process. After casting, castings need to undergo a series of post-processing steps such as stamping and polishing.

[0003] There are many types of castings according to different classification methods. As for the ductile iron wheel hub spinning casting upgrade process, in order to improve the toughness and strength of the ductile iron wheel hub casting, the ductile iron wheel hub blank needs to be rotary stamped.

[0004] After searching the invention patent with the authorization announcement number CN110871229B, a spinning process for automobile aluminum alloy wheel hub is disclosed, which includes the following steps: (1) taking out the aluminum alloy wheel hub blank from the casting mold and directly placing it into a heating furnace for further heating; (2) using a manipulator to grab the aluminum alloy wheel hub blank coming out of the heating furnace and placing the aluminum alloy wheel hub blank on the spinning mold, controlling the upper tail ejector tool above the spinning mold to move downward and clamp the aluminum alloy wheel hub blank together with the spinning mold; (3) spinning the aluminum alloy wheel hub blank by a spinning tool; (4) controlling the upper tail ejector tool to move upward to the original point, and the ejector pushes the spinning blank that has completed the spinning process upward to separate the spinning blank from the spinning mold.

[0005] Based on the above patents and combined with existing solutions and actual production and processing, the current wheel hub casting rotary stamping processing device still has some problems, such as:

[0006] 1. In the aforementioned patent, the aluminum alloy wheel casting is unloaded by a manipulator. It is known that after the ejector is ejected from the mold, the unloading operation is also carried out by the manipulator. This is similar to the existing wheel rotary stamping device. Both use the manipulator to unload or unload. However, the manipulator is highly dependent on the working environment and needs to operate in a stable temperature, humidity and cleanliness environment. In other words, a complex working environment can easily lead to deviations in the operation of the manipulator. The manipulator is only responsible for unloading and taking the wheel, and needs to be positioned and fixed on the mold. The operation steps are not simplified enough, which affects work efficiency.

[0007] 2. The robot fixes the wheel hub and rim by clamping and grasping, which has strict requirements on the clamping parameters of the robot. Or affected by the complex working environment, traditional robots are prone to rim deformation or scratches on the surface of the rim due to improper clamping force.

[0008] Therefore, we propose a punching device for post-processing of castings to solve the problems raised above. Summary of the Invention

[0009] The purpose of the present invention is to provide a stamping device for post-processing of castings to solve the problem proposed in the above background technology that the ductile iron hub casting adopts a rim clamping fixation method during the material removal operation, which easily causes the rim to deform or scratch, and the operation steps are not simplified enough.

[0010] To achieve the above-mentioned object, the present invention provides the following technical solution: a stamping device for post-processing of castings, comprising:

[0011] A pedestal, the center of which is connected to a transmission plate through a motor fixed to the lower wall thereof, and a stamping tool assembly for forming the wheel hub casting is provided on both the left and right sides of the pedestal;

[0012] Also includes:

[0013] The supporting frame is fixedly connected to the upper part of the pedestal in a vertical upward state. A main moving frame is driven by a first hydraulic cylinder to slide back and forth horizontally on a guide rod of the supporting frame, and a secondary moving frame is driven by a second hydraulic cylinder to slide back and forth vertically in the middle of the main moving frame.

[0014] An automatic press-locking mechanism drives the top mold fixed thereon to form a rotating structure on the horizontal frame in the auxiliary shifting frame, and a bottom mold fixedly connected to the transmission disk is correspondingly arranged directly below the top mold. The automatic press-locking mechanism cooperates with the top mold to perform press-locking automatic picking and fixing of the center opening of the spoke in the wheel hub casting, and it drives the wheel hub casting to directly dock with the bottom mold during discharge for positioning and fixing.

[0015] Preferably, the automatic pressing and locking mechanism includes a tube shell frame rotatably connected to the middle part of the horizontal frame body in the auxiliary moving frame and a pressing claw member arranged in a ring array at the lower section of the tube shell frame with the center of the tube shell frame as the center of the circle. The tube shell frame is interspersed with the center position of the top mold and is fixed together by bolts. A linkage column is slidably connected in the shell cavity of the lower section of the tube shell frame, and a first spring is installed at the sliding connection between the two.

[0016] Among them, the pressure claw is assisted by the shaft column to form a flip structure on the tube shell frame, and its flipping and expansion cooperates with the top mold to press and lock the spokes in the hub casting. The pressure claw is provided with an integrated gear part at one end close to the linkage column, and the gear part is meshed and connected with the rack part which is provided on the linkage column in an integrated structure.

[0017] Preferably, a push piece is slidably connected in the upper shell cavity of the tube shell frame by driving an electric telescopic rod, and a second spring for transmission is provided between the push piece and the linkage column, and the spring coefficient of the second spring is greater than the spring coefficient of the first spring.

[0018] Preferably, the linkage column is connected to the rod body portion of the pressure rod in a sliding manner, and the upper end of the rod body portion of the pressure rod is fixedly connected to the narrow portion of the push member by a bolt, and the upper side wall of the disc portion of the pressure rod is vertically upwardly provided with an integrated structure extrusion portion, and the extrusion portion is connected to the auxiliary groove provided in the middle of the first latch bolt lock in an interlaced and pressed manner;

[0019] The first oblique bolt lock forms a telescopic sliding structure at the lower end of the tube shell frame, a third spring is installed at the sliding connection between the two, and the oblique bolt end of the first oblique bolt lock is engaged and connected with the lower end of the linkage column.

[0020] Preferably, an upper end of the extrusion portion is provided with an inclined side wall, and the inclined side wall in the extrusion portion and the inclined side wall in the auxiliary groove are adapted to be arranged in a corresponding state.

[0021] Preferably, a tube groove portion is opened in the central position of the bottom mold, wherein the upper section of the tube groove portion is a trumpet-shaped structure, and the lower end of the bottom mold is slidably connected to a removal part for pushing and demolding the wheel hub casting, and a fourth spring is installed at the sliding connection between the two.

[0022] Preferably, the column part of the removal piece is movably inserted into the tube groove part, and the ring part of the removal piece is movably sleeved on the outside of the bottom mold. The left and right sides of the upper end of the column part of the removal piece are flipped and connected with half ring sleeves, and a torsion spring is installed at the flip connection between the two.

[0023] Preferably, the semi-annular sleeve is pressed and connected to the lower section of the tube groove wall of the tube groove portion, the middle part of the semi-annular sleeve is telescopically and slidably connected to the second oblique tongue lock, a fifth spring is installed at the sliding connection between the two, and the oblique tongue end of the second oblique tongue lock is connected to the disk body portion in the pressure rod member by a snap-fitting manner.

[0024] Compared with the prior art, the present invention has the following advantages: the stamping device for post-processing the casting adopts a press-locking automatic pick-up and fixation method for the hub casting, thereby avoiding deformation or scratching of the rim in the hub casting; in addition, when the rim is pushed and demolded, the spokes are simultaneously pulled and demolded, thereby ensuring that the rim and the spokes are evenly stressed during demolding of the hub casting;

[0025] 1. After the automatic pressing and locking mechanism is inserted into the center opening of the spoke in the wheel hub casting, the linkage column is driven to slide, and the meshing action between the rack and the gear causes the pressing claw to flip and unfold on the tube frame. The flipped and unfolded pressing claw cooperates with the top mold to press and lock the spoke in the wheel hub casting. The wheel hub casting is automatically picked up and fixed by pressing and locking, achieving damage-free pressing and locking. This is different from the clamping and fixing of traditional manipulators and avoids deformation or scratches on the rim of the wheel hub casting.

[0026] Furthermore, the main moving frame is driven by the first hydraulic cylinder to slide horizontally on the carrying frame, and the auxiliary moving frame is driven by the second hydraulic cylinder to slide vertically on the main moving frame. The two cooperate to realize the horizontal and vertical movement of the automatic pressing and locking mechanism. When the wheel hub casting is docked with the bottom mold, the positioning and fixation of the wheel hub casting on the bottom mold are simultaneously realized, thereby optimizing the operation steps and ensuring work efficiency.

[0027] 2. The middle plate of the pressure rod and the semi-ring are locked with the assistance of the second oblique tongue lock. The pressure rod is driven by the electric telescopic rod to operate the removal member to move upward. The auxiliary moving frame is driven by the second hydraulic cylinder to operate the automatic locking mechanism to move upward synchronously. When the removal member pushes the rim of the wheel hub casting to demould, the spokes of the wheel hub casting are simultaneously lifted and demoulded by the automatic locking mechanism. This ensures that the rim and spokes are evenly stressed during demoulding of the wheel hub casting. This is different from the demoulding method of only pushing the spokes, avoids mold jamming, and avoids the problem of spoke damage caused by uneven force, achieving convenient and damage-free demoulding.

[0028] Furthermore, the middle disk body of the pressure rod drives the semi-ring sleeve to move to the horn section of the tube groove. After the semi-ring sleeve loses its limit, it is reset by the elastic deformation of the torsion spring, so that the semi-ring sleeve is flipped and unfolded on the removal piece, and the second oblique tongue lock and the middle disk body of the pressure rod lose their engagement and locking. Through the setting of the linkage structure, the automatic pressing and locking mechanism and the removal piece are automatically separated, ensuring convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the side cross-sectional three-dimensional structure of the connection between the transmission plate and the bottom mold of the present invention;

[0031] Figure 3 It is a schematic diagram of the side cross-sectional three-dimensional structure of the connection between the load-bearing frame and the main movable frame of the present invention;

[0032] Figure 4 This is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the auxiliary moving frame and the automatic pressing and locking mechanism of the present invention;

[0033] Figure 5 This is a schematic diagram of the main moving frame and the auxiliary moving frame being separated from each other in a front view;

[0034] Figure 6 This is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the tube shell frame and the push piece of the present invention;

[0035] Figure 7 This is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the tube shell frame and the pressure claw member of the present invention;

[0036] Figure 8 This is a schematic diagram of the split front view of the three-dimensional structure of the pressure claw member and the linkage column of the present invention;

[0037] Figure 9 This is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the linkage column and the pressure rod of the present invention;

[0038] Figure 10 It is a schematic diagram of a top-view cross-sectional three-dimensional structure of the connection between the tube housing frame and the first oblique tongue lock of the present invention;

[0039] Figure 11 This is a schematic diagram of the cross-sectional three-dimensional structure of the connection between the top mold and the tube shell frame of the present invention when viewed from the bottom;

[0040] Figure 12 This is a structural diagram of embodiment 2 of the present invention;

[0041] Figure 13 This is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the bottom mold and the removal piece of the present invention;

[0042] Figure 14 This is a schematic diagram of the front cross-sectional three-dimensional structure of the removal piece and the semi-annular sleeve of the present invention.

[0043] In the figure: 1. pedestal; 2. transmission plate; 3. motor; 4. stamping tool assembly; 5. carrying frame; 6. main moving frame; 7. first hydraulic cylinder; 8. auxiliary moving frame; 9. second hydraulic cylinder; 10. automatic pressing and locking mechanism; 11. top mold; 12. bottom mold; 1201. pipe groove portion; 13. pipe shell frame; 14. pressure claw member; 1401. gear portion; 15. linkage column; 1501. rack portion; 16. first spring; 17. pushing member; 18. second spring; 19. electric telescopic rod; 20. pressure rod member; 2001. extrusion portion; 21. first oblique tongue lock; 2101. auxiliary groove; 22. third spring; 23. removal member; 24. fourth spring; 25. half ring; 26. torsion spring; 27. second oblique tongue lock; 28. fifth spring. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] Example 1:

[0046] The present invention provides a technical solution: a stamping device for post-processing of castings, which can cope with the problem that traditional manipulators are only responsible for the discharge and collection of hub castings, and need to additionally perform positioning and fixation of the hub castings on the mold. The operation steps are not simplified enough, and the traditional manipulators are prone to deformation of the rim or scratches on the rim surface due to improper clamping force. Through the mutual cooperation between the automatic locking mechanism 10 and the top mold 11, the center opening of the spoke in the hub casting is automatically picked up and fixed by pressing and locking to avoid direct docking with the rim. In addition, through the mutual cooperation between the horizontal reciprocating sliding of the main moving frame 6 and the vertical reciprocating sliding of the auxiliary moving frame 8, the hub casting can be directly docked with the bottom mold 12 for positioning and fixation during discharge.

[0047] This technical solution: please refer to Figures 1-11 A stamping device for post-processing of castings includes a pedestal 1, which is horizontally placed in a factory building. The center of the pedestal 1 is driven and rotated by a motor 3 fixed to the lower wall thereof and is connected to a transmission plate 2. Stamping tool assemblies 4 for forming wheel hub castings are provided on both the left and right sides of the pedestal 1.

[0048] It also includes a supporting frame 5 and an automatic locking mechanism 10. The supporting frame 5 is fixedly connected to the top of the pedestal 1 in a vertical upward state. The main moving frame 6 is driven by the first hydraulic cylinder 7 to slide back and forth horizontally on the guide rod of the supporting frame 5. The middle part of the main moving frame 6 is driven by the second hydraulic cylinder 9 to slide back and forth vertically with an auxiliary moving frame 8. The automatic locking mechanism 10 drives the top mold 11 fixed thereon to form a rotating structure on the horizontal frame of the auxiliary moving frame 8, and a bottom mold 12 fixedly connected to the transmission disk 2 is correspondingly arranged directly below the top mold 11. After the automatic locking mechanism 10 is placed, it is set in a vertical downward state. The automatic locking mechanism 10, the top mold 11 and the bottom mold 12 are on the same vertical central axis. The automatic locking mechanism 10 cooperates with the top mold 11 to perform the automatic picking and fixing of the spoke center opening in the wheel hub casting by locking method, and it drives the wheel hub casting to directly dock with the bottom mold 12 during material discharge for positioning and fixing.

[0049] Specifically, in this technical solution, when performing the material discharge or material extraction operation of the wheel hub casting, according to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown, a conveyor belt of the hub casting is provided at the rear of the pedestal 1 (the conveyor belt is a prior art and is not described in the drawings of the specification). Guide rods are inserted through the upper and lower sides of the frame wall on one side of the supporting frame 5 and are fixedly connected by bolts, wherein the two guide rods on the upper and lower sides are arranged in parallel and combined to form a group. The guide rods in the supporting frame 5 are arranged symmetrically about the vertical central axis of the supporting frame 5, and are two groups of left and right guide rods. Moreover, two groups of sleeve parts are respectively provided on the left and right sides of the main moving frame 6, wherein each group of sleeve parts is divided into upper and lower sleeve parts. After the main moving frame 6 is placed, each sleeve part is provided in a one-to-one correspondence with each guide rod, and the sleeve part is movably penetrated and sleeved on the guide rod in the supporting frame 5, so that the main moving frame 6 is in a horizontal state and is movably positioned on the supporting frame 5.

[0050] Since the first hydraulic cylinder 7 is arranged symmetrically about the vertical center axis of the supporting frame 5, the first hydraulic cylinder 7 is arranged horizontally and facing backward after being installed. It is fixed to the front frame wall of the supporting frame 5 by bolts, and its output end is plugged and fixedly connected between the upper and lower sleeve parts of the main moving frame 6 by bolts. When the first hydraulic cylinder 7 is started to extend and operate, the sleeve part of the main moving frame 6 slides on the guide rod in the supporting frame 5, and the main moving frame 6 moves along the guide rod in the supporting frame 5 toward the conveyor belt and moves to just above the wheel hub casting on the conveyor belt;

[0051] Since the upper side wall of the main moving frame 6 is vertically provided with an "L"-shaped frame of an integrated structure, wherein the "L"-shaped frame is symmetrically arranged about its vertical central axis, and since the auxiliary moving frame 8 is in a "U"-shaped structure, it is divided into a longitudinal frame body and a transverse frame body, wherein the longitudinal frame body is arranged in a square frame-shaped structure. After the auxiliary moving frame 8 is placed, the longitudinal frame body is movably inserted and clamped in the middle of the main moving frame 6, and the two "L"-shaped frames in the main moving frame 6 are movably clamped in the frame cavities of the two longitudinal frames in the auxiliary moving frame 8, so that the auxiliary moving frame 8 is in a vertical state and is arranged in a movable positioning state on the main moving frame 6;

[0052] Since the second hydraulic cylinder 9 is symmetrically arranged about the vertical center axis of the main moving frame 6, the second hydraulic cylinder 9 is arranged in a vertical upward state after being placed. It is fixed to the "L"-shaped frame in the main moving frame 6 by bolts, and the output end thereof is plugged into and fixedly connected to the frame cavity wall of the longitudinal frame body in the auxiliary moving frame 8 by bolts. When the second hydraulic cylinder 9 is started to contract, the auxiliary moving frame 8 slides downward in the middle of the main moving frame 6, and the automatic pressing and locking mechanism 10 is docked with the hub casting on the conveyor belt. After the automatic pressing and locking mechanism 10 is inserted into the center opening of the spoke in the hub casting, the hub casting is automatically picked up and fixed by pressing and locking through mutual cooperation with the top mold 11;

[0053] According to the above, after the automatic locking mechanism 10 locks the wheel hub casting, the second hydraulic cylinder 9 is first started to extend and operate, so that the auxiliary moving frame 8 drives the wheel hub casting to slide upward on the main moving frame 6, and then the first hydraulic cylinder 7 is started to contract and operate, so that the main moving frame 6 drives the wheel hub casting to move on the supporting frame 5 toward the bottom mold 12, and moves to the top of the bottom mold 12, and finally the second hydraulic cylinder 9 is started to contract and operate, so that the auxiliary moving frame 8 drives the wheel hub casting to slide downward, and the wheel hub casting is docked and sleeved on the bottom mold 12, completing the discharge operation of the wheel hub casting. Similarly, conversely, the material taking operation of the wheel hub casting is completed.

[0054] Specifically, in this technical solution, when the wheel hub casting is automatically picked up and fixed by the automatic pressing and locking mechanism 10, according to Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 11 As shown, since the shell frame 13 and the top mold 11 are interlaced at the center position and fixed together by bolts, after the automatic locking mechanism 10 is docked with the wheel hub casting, the shell frame 13 is movable and interlaced through the center opening of the wheel hub casting, so that the top mold 11 is clamped and pressed against the wheel hub casting.

[0055] Since the push piece 17 has a convex-shaped longitudinal cross-section, divided into a wide portion and a narrow portion, it is movably plugged into the upper shell cavity of the tube shell frame 13 after installation. Since the electric telescopic rod 19 is connected to the external circuit via a rotary joint (the rotary joint is a prior art and is not described in the drawings of the specification), the electric telescopic rod 19 is vertically downward after installation and is placed in the upper shell cavity of the tube shell frame 13. It is fixedly connected to the shell cavity wall of the tube shell frame 13 by bolts, and its output end is plugged into and fixedly connected to the wide portion of the push piece 17 by bolts. When the electric telescopic rod 19 is activated to extend, the push piece 17 slides downward in the upper shell cavity of the tube shell frame 13.

[0056] Since a second spring 18 for transmission is provided between the pushing member 17 and the linkage column 15, the upper and lower ends of the second spring 18 are provided with an integrated ring portion. After the second spring 18 is placed, it is movably sleeved on the outer side of the pressure rod 20, and the ring portion at the lower end is clamped and fixedly connected to the upper end of the linkage column 15 by bolts, and the ring portion at the upper end is movably sleeved on the narrow portion of the pushing member 17. After the pushing member 17 is driven to slide down, the linkage column 15 is pushed by the second spring 18 to move synchronously.

[0057] Since the left and right sides of the lower shell of the tube shell frame 13 are both clamped and fixedly connected with blocking blocks by bolts, a spring bin is provided in the lower column of the linkage column 15, and a through-state slide groove is provided on the left and right sides of the lower column of the linkage column 15, and the slide groove is connected to the spring bin. The cross section of the linkage column 15 is a square structure. After it is placed, it is movably clamped in the shell cavity of the lower section of the tube shell frame 13, and the blocking block in the tube shell frame 13 is movably inserted through the slide groove and inserted into the spring bin, and is arranged in a movable positioning state. A first spring 16 is installed at the sliding connection between the movable column 15 and the tube housing frame 13. After being installed, the first spring 16 is movably inserted into the spring compartment of the linkage column 15. One end of the first spring 16 presses against the spring compartment wall, and the other end presses against the blocking block in the tube housing frame 13. After being driven, the linkage column 15 slides downward in the lower shell cavity of the tube housing frame 13. The spring coefficient of the second spring 18 is greater than the spring coefficient of the first spring 16. After the second spring 18 pushes the linkage column 15 to slide downward, the first spring 16 is squeezed and elastically deformed.

[0058] Since the four sides of the linkage column 15 are all provided with rack portions 1501 of an integrated structure, and since four pressure claw members 14 are arranged in a circular array in the lower section of the tube shell frame 13 with the center of the tube shell frame 13 as the center of the circle, the pressure claw member 14 is provided with an integrated gear portion 1401 at one end close to the linkage column 15, each gear portion 1401 is respectively arranged in a one-to-one correspondence with each rack portion 1501, and the gear portion 1401 and the rack portion 1501 are meshed and connected together. After the linkage column 15 slides down, the meshing action between the gear portion 1401 and the rack portion 1501 drives the pressure claw member 14 to move;

[0059] Since the end of the pressure claw 14 away from the linkage column 15 is clamped and connected to the rubber pad through bolts, the end of the pressure claw 14 close to the linkage column 15 is rotatably connected to the shaft column, and after being placed, the pressure claw 14 is movably clamped in the storage bin in the tube shell frame 13, and the two ends of the shaft column are respectively inserted and fixedly connected to the bin walls on both sides of the storage bin through bolts. Since the center of the gear portion 1401 coincides with the flipping center of the pressure claw 14, the pressure claw 14 is driven and assisted by the shaft column to flip and unfold on the tube shell frame 13. After flipping and unfolding, it cooperates with the top mold 11 to press and lock the wheel spokes in the wheel hub casting. Through the rubber pad on it, it is pressed and locked without damage, completing the press-locking automatic picking and fixing of the wheel hub casting;

[0060] Since the first oblique bolt lock 21 is arranged in a circular array with the center of the tube shell frame 13 as the center of the circle, the cross section of the first oblique bolt lock 21 is a "convex" shaped structure, wherein the inclined side wall of the oblique bolt end is arranged in an upward state, and after it is installed, it is movably clamped in the lower end groove cavity of the tube shell frame 13. In addition, since the sliding connection between the first oblique bolt lock 21 and the tube shell frame 13 is installed with a third spring 22, the third spring 22 is symmetrically arranged about the horizontal central axis of the first oblique bolt lock 21. After the third spring 22 is installed, it is movably inserted into the spring compartment of the first oblique bolt lock 21, one end of which is pressed against the spring compartment wall, and the other end of which is pressed against the lower end groove cavity wall of the tube shell frame 13. When the linkage column 15 When the linkage post 15 slides down and contacts the first oblique bolt lock 21, the inclined side wall of the oblique bolt end in the first oblique bolt lock 21 pushes the first oblique bolt lock 21 to retract and slide at the lower end of the tube shell frame 13, and the third spring 22 is squeezed and elastically deformed. When the linkage post 15 completely slides down and loses the push on the first oblique bolt lock 21, the elastic deformation of the third spring 22 resets the linkage post 15, causing the first oblique bolt lock 21 to extend and slide at the lower end of the tube shell frame 13, and the oblique bolt end of the first oblique bolt lock 21 is engaged and connected with the lower end of the linkage post 15, locking the linkage post 15 after it has slided down, keeping the pressure claw member 14 in the flipped and expanded state, that is, maintaining the pressure lock on the wheel hub casting.

[0061] Specifically, in this technical solution, when the wheel hub casting is unlocked by the automatic locking mechanism 10, according to the above, Figure 6 、 Figure 7 、 Figure 10 and Figure 11 As shown, since the pressure rod 20 is divided into a rod body and a disc body with the same vertical central axis as the rod body, after the pressure rod 20 is placed, the rod body movably passes through the middle part of the linkage column 15, and the disc body is placed outside the lower end of the tube shell frame 13, and the upper end of the rod body is inserted and fixedly connected to the narrow part of the push piece 17 by bolts, the electric telescopic rod 19 is started to retract and operate, so that the push piece 17 slides upward in the upper shell cavity of the tube shell frame 13, driving the pressure rod 20 to slide upward synchronously, and causing the rod body of the pressure rod 20 to slide on the linkage column 15. At this time, the annular portion of the upper end of the second spring 18 slides on the narrow part of the push piece 17;

[0062] Since the upper side wall of the disc body in the pressure rod 20 is vertically provided with an integrated structure of the extrusion portion 2001, the extrusion portion 2001 is arranged in a circular array with the center of the pressure rod 20 as the center of the circle, each extrusion portion 2001 is arranged in a one-to-one correspondence with each first oblique tongue lock 21, and since the middle of the first oblique tongue lock 21 is provided with an auxiliary groove 2101, one side of the groove cavity wall of the auxiliary groove 2101 is arranged in an inclined state, the upper end of the extrusion portion 2001 is provided with an inclined side wall, and the inclined side wall in the extrusion portion 2001 is aligned with the inclined side wall in the auxiliary groove 2101. The adapter is arranged in a corresponding state. After the pressure rod 20 is driven to slide upward, the extrusion portion 2001 is inserted into the auxiliary groove 2101. Through the mutual cooperation of the inclined side walls of the extrusion portion 2001 and the inclined side walls of the auxiliary groove 2101, the extrusion portion 2001 presses against the auxiliary groove 2101, and the first oblique tongue lock 21 retracts and slides at the lower end of the tube shell frame 13. The first oblique tongue lock 21 releases the lock on the linkage column 15 and is reset by the spring deformation of the first spring 16, so that the linkage column 15 returns to its original position and slides upward in the lower shell cavity of the tube shell frame 13.

[0063] Since storage bins are provided on the front, back, left and right sides of the lower shell of the tube shell frame 13, four pressure claws 14 are arranged in a circular array, and each pressure claw 14 is arranged one-to-one corresponding to each storage bin in the tube shell frame 13. After the linkage column 15 is reset and slid upward, the meshing action between the rack portion 1501 and the gear portion 1401 is utilized to enable the pressure claw 14 to be flipped and folded and stored in the storage bin in the tube shell frame 13, without hindering the tube shell frame 13 from docking and interlacing with the center opening of the spoke in the hub casting, nor preventing the tube shell frame 13 from being pulled out from the center opening of the spoke in the hub casting, thereby completing the unlocking operation of the hub casting.

[0064] Specifically, in this technical solution, when the wheel hub casting is subjected to rotary stamping operation, according to Figure 1 、 Figure 2 、 Figure 4 and Figure 11 As shown, the automatic locking mechanism 10 cooperates with the top mold 11 to lock the wheel hub casting, and the wheel hub casting is docked with the bottom mold 12. Since the transmission disc 2 is arranged in a square structure, the center position of its lower side wall is vertically downwardly provided with an integrated structure of the shaft column part, and the upper and lower ends of the shaft column part are fixedly connected with bearings. After the transmission disc 2 is placed, the shaft column part and the bearing are movably inserted through the central position of the pedestal 1 and are arranged in a movable positioning state on the pedestal 1. Since the motor 3 is in a vertical upward state after being placed, it is fixedly connected to the lower seat wall of the pedestal 1 by bolts, and its output end is plugged in and fixedly connected to the shaft column part of the transmission disc 2 by bolts. The motor 3 is started to operate and the transmission disc 2 is rotated at the central position of the pedestal 1.

[0065] Since the middle section of the shell of the tube shell frame 13 is protruded with a positioning ring portion of an integrated structure, wherein the upper and lower sides of the positioning ring portion are fixedly clamped with bearings, after the tube shell frame 13 is placed, its lower section movably passes through the middle part of the horizontal frame of the auxiliary moving frame 8 and extends downward, and the positioning ring portion and the bearing are movably clamped in the middle part of the horizontal frame of the auxiliary moving frame 8, so that the tube shell frame 13 is arranged in a movable positioning state on the auxiliary moving frame 8, so that the tube shell frame 13 forms a rotating structure in the middle part of the horizontal frame of the auxiliary moving frame 8;

[0066] After the bottom mold 12 is placed, its lower side wall is clamped and fixedly connected to the transmission plate 2 by bolts, and the two are on the same vertical central axis. When the transmission plate 2 is driven, it drives the bottom mold 12 to form a rotating structure on the base 1, that is, the bottom mold 12, the top mold 11 and the automatic pressing and locking mechanism 10 form a synchronous rotating structure;

[0067] Since the punching tool assembly 4 is placed in a vertically upward position on the upper wall of the pedestal 1, the left and right punching tool assemblies 4 are both on the same horizontal central axis as the bottom die 12, and the cutter heads in the punching tool assembly 4 are driven to perform longitudinal and lateral sliding adjustments, and perform a rotary punching operation in accordance with the shape of the hub (this is a prior art and is not described in the drawings of the specification), thereby completing the rotary punching process of the hub casting;

[0068] In addition, both the top mold 11 and the bottom mold 12 can be replaced to match different wheel hub castings.

[0069] Example 2:

[0070] The present invention is based on the first embodiment. Figure 12-14 The technical solution shown can address the problem of uneven demoulding force on the hub casting, which makes demoulding inconvenient and causes damage to the hub casting. The spokes in the hub casting are pulled out of the mold by the automatic pressing and locking mechanism 10, and the rim in the hub casting is pushed out of the mold by the removal part 23. The two cooperate to achieve uniform force and convenient demoulding.

[0071] Specifically, in this technical solution, when performing the demoulding operation of the wheel hub casting, according to Figure 12 、 Figure 13 and Figure 14 As shown, after the pressure claw member 14 completes the pressure locking process on the hub casting, the electric telescopic rod 19 continues to extend and operate, and the pressure rod member 20 is driven to slide and extend, so that the second spring 18 is squeezed and elastically deformed. Since the left and right sides of the upper end of the column portion in the removal member 23 are provided with semi-annular sleeves 25, the size of the annular cavity of the combination of the two semi-annular sleeves 25 is adapted to the diameter of the disc portion in the pressure rod member 20. After the pressure rod member 20 slides out, the disc portion is inserted into the annular cavity of the combination of the two semi-annular sleeves 25;

[0072] Since the bottom mold 12 has a tube groove portion 1201 at the center, in the initial state, the half ring 25 is placed in the tube groove cavity of the lower section of the tube groove portion 1201, and is pressed and connected with the tube groove wall of the lower section of the tube groove portion 1201, so that the two half rings 25 are set in a closed state to form a ring cavity.

[0073] Since the longitudinal section of the second oblique tongue lock 27 is an "L"-shaped structure, it is movably mounted in the middle groove cavity of the semi-annular sleeve 25 after being installed, and the oblique tongue end thereof extends into the annular cavity of the combination of the two semi-annular sleeves 25. The inclined side wall of the oblique tongue end in the second oblique tongue lock 27 is arranged in an upward state. Moreover, since a fifth spring 28 is installed at the sliding connection between the semi-annular sleeve 25 and the second oblique tongue lock 27, the fifth spring 28 is movably inserted in the spring bin of the second oblique tongue lock 27 after being installed, and one end of the fifth spring is pressed against the wall of the spring bin, and the other end is pressed against the wall of the groove cavity of the semi-annular sleeve 25. When the disc portion in the pressure rod 20 is in contact with the spring bin, the spring bin 28 is pressed against the wall of the spring bin, and the other end of the fifth spring is pressed against the wall of the groove cavity of the semi-annular sleeve 25. When the second latch bolt lock 27 contacts the semi-annular sleeve 25, the inclined side wall of the latch bolt end of the second latch bolt lock 27 causes the second latch bolt lock 27 to be pushed and slid in the middle of the semi-annular sleeve 25, and the fifth spring 28 is elastically deformed under compression. When the disc portion of the pressure rod 20 no longer pushes the second latch bolt lock 27, the elastic deformation of the fifth spring 28 is utilized to reset the second latch bolt lock 27, causing the second latch bolt lock 27 to extend and slide in the middle of the semi-annular sleeve 25, and the latch bolt end of the second latch bolt lock 27 is connected to the disc portion of the pressure rod 20 in a snap-fit manner, thereby locking the disc portion of the pressure rod 20 and the semi-annular sleeve 25 together.

[0074] Since the removal piece 23 is composed of a column and a ring portion concentric with the column, a connecting plate for connecting the column and the ring is provided at equal angles between the column and the ring in the removal piece 23. After the removal piece 23 is installed, the column is movably inserted into the pipe groove 1201, and the ring is movably sleeved on the outer side of the bottom mold 12, so that the removal piece 23 is arranged on the bottom mold 12 in a movable and positioned state.

[0075] Since a fourth spring 24 is installed at the sliding connection between the removal piece 23 and the bottom mold 12, the fourth spring 24 is movably inserted into the spring compartment of the bottom mold 12 after being installed, one end of the fourth spring presses against the wall of the spring compartment, and the other end presses against the column part in the removal piece 23, the electric telescopic rod 19 is started to retract and the second spring 18 restores its elastic deformation, causing the pressure rod 20 to return to its original position, retract and slide, and through the locking between the pressure rod 20 and the semi-annular sleeve 25, the pressure rod 20 is pulled to move synchronously when returning to its original position, retracting and sliding, so that the column part in the removal piece 23 slides in the pipe groove part 1201, and the ring part in the removal piece 23 slides on the outside of the bottom mold 12, and the fourth spring 24 is squeezed and elastically deformed, so that the wheel hub casting is pushed and demoulded;

[0076] When the electric telescopic rod 19 is retracted, the second hydraulic cylinder 9 is simultaneously activated to extend, so that the auxiliary moving frame 8 drives the automatic pressing and locking mechanism 10 to move upward, that is, when the removal component 23 pushes the rim of the wheel hub casting to demould, the spokes of the wheel hub casting are simultaneously lifted and demoulded by the automatic pressing and locking mechanism 10;

[0077] Since the upper section of the pipe groove portion 1201 is a trumpet-shaped structure, the trumpet section is set in an open state, and since the middle part of the lower side of the semi-annular sleeve 25 is provided with a connecting block of an integrated structure, wherein the connecting block is rotatably connected to the shaft column, after the semi-annular sleeve 25 is placed, the connecting block is movably carded in the groove cavity at the upper end of the column portion in the removal piece 23, and the two ends of the shaft column are respectively plugged in and fixedly connected to the groove cavity walls on both sides of the upper end of the column portion in the removal piece 23 by bolts, and then since the column portion in the removal piece 23 and the flip connection of the semi-annular sleeve 25 are installed with a torsion spring 26, the torsion spring 26 is movably sleeved on the semi-annular sleeve 25 after being placed. On the central axis column, one end thereof is clamped on the semi-annular sleeve 25, and the other end thereof is clamped on the upper end of the column portion in the removal member 23. After the removal member 23 is pulled and slid, the semi-annular sleeve 25 moves to the horn section of the pipe groove portion 1201 and loses its limit. The elastic deformation of the torsion spring 26 is used to reset the two semi-annular sleeves 25, so that the two semi-annular sleeves 25 are flipped and unfolded in opposite directions on the column portion in the removal member 23, and the second oblique tongue lock 27 loses its clamping connection with the disc portion in the pressure rod 20, releasing the lock between the disc portion in the pressure rod 20 and the semi-annular sleeve 25. After the pressure rod 20 is disengaged, the wheel hub casting is removed through the automatic pressure locking mechanism 10;

[0078] Since the spring constant of the fourth spring 24 is greater than the spring constant of the torsion spring 26, after the lock between the disc body and the semi-ring sleeve 25 in the pressure rod 20 is released, the elastic deformation of the fourth spring 24 is used to reset the removal part 23 to reset and slide on the bottom mold 12, and the semi-ring sleeve 25 is reset and flipped on the column part in the removal part 23 to return to its original state.

[0079] This is the entire working process of the stamping device for post-processing of castings. Contents not described in detail in this specification belong to the existing technology well known to professional and technical personnel in this field.

[0080] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0081] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stamping device for post-processing of castings, comprising: A pedestal (1), wherein the center of the pedestal (1) is driven to rotate by a motor (3) fixed to a lower wall thereof and is connected to a transmission disc (2), and punching tool assemblies (4) for forming a wheel hub casting are provided on both left and right sides of the pedestal (1); It is characterized by further comprising: A supporting frame (5), wherein the supporting frame (5) is fixedly connected to the upper part of the pedestal (1) in a vertically upward state, a main moving frame (6) is driven by a first hydraulic cylinder (7) to slide horizontally back and forth on a guide rod in the supporting frame (5), and a secondary moving frame (8) is driven by a second hydraulic cylinder (9) to slide vertically back and forth in the middle of the main moving frame (6); An automatic pressing and locking mechanism (10), wherein the automatic pressing and locking mechanism (10) drives a top mold (11) fixed thereon to form a rotating structure on a transverse frame in the auxiliary shifting frame (8), and a bottom mold (12) fixedly connected to the transmission plate (2) is correspondingly provided directly below the top mold (11), wherein the automatic pressing and locking mechanism (10) cooperates with the top mold (11) to automatically pick up and fix the spoke center opening in the wheel hub casting by pressing and locking, and drives the wheel hub casting to directly dock with the bottom mold (12) during discharge for positioning and fixing; The automatic locking mechanism (10) comprises a shell frame (13) rotatably connected to the middle of the horizontal frame in the auxiliary shift frame (8) and a pressure claw member (14) arranged in a ring array at the lower section of the shell frame (13) with the center of the shell frame (13) as the center of the circle. The pressure claw member (14) is assisted by a shaft column to form a flip structure on the shell frame (13). The flip and unfolding structure cooperates with the top mold (11) to press and lock the wheel spokes in the wheel hub casting. The linkage column (15) is connected to the rod body of the pressure rod (20) in a sliding manner, and the upper end of the rod body of the pressure rod (20) is fixedly connected to the narrow portion of the push member (17) by a bolt, and the upper side wall of the disc body of the pressure rod (20) is vertically upwardly provided with an integrated structure extrusion portion (2001), and the extrusion portion (2001) is connected to the auxiliary groove (2101) provided in the middle of the first oblique tongue lock (21) in an interlaced and pressed manner; The first oblique tongue lock (21) forms a telescopic sliding structure at the lower end of the tube shell frame (13), a third spring (22) is installed at the sliding connection between the two, and the oblique tongue end of the first oblique tongue lock (21) is engaged and connected with the lower end of the linkage column (15); The upper end of the extrusion portion (2001) is provided with an inclined side wall, and the inclined side wall in the extrusion portion (2001) and the inclined side wall in the auxiliary groove (2101) are adapted to be arranged in a corresponding state.

2. A punching device for post-processing of castings according to claim 1, characterized in that: The tube shell frame (13) and the top mold (11) are interlaced at the center position and fixed together by bolts. A linkage column (15) is slidably connected in the shell cavity of the lower section of the tube shell frame (13), and a first spring (16) is installed at the sliding connection between the two. The pressure claw member (14) is provided with a gear portion (1401) of an integrated structure at one end close to the linkage column (15), and the gear portion (1401) is meshed and connected with a rack portion (1501) of an integrated structure provided on the linkage column (15).

3. A punching device for post-processing of castings according to claim 2, characterized in that: A push piece (17) is slidably connected in the upper shell cavity of the tube shell frame (13) by being driven by an electric telescopic rod (19), and a second spring (18) for transmission is provided between the push piece (17) and the linkage column (15), and the spring coefficient of the second spring (18) is greater than the spring coefficient of the first spring (16).

4. A punching device for post-processing of castings according to claim 1, characterized in that: A tube groove portion (1201) is provided at the central position of the bottom mold (12), wherein the upper section of the tube groove portion (1201) is in a trumpet-shaped structure. The lower end of the bottom mold (12) is slidably connected to a removal member (23) for pushing and demoulding the wheel hub casting, and a fourth spring (24) is installed at the sliding connection between the two.

5. A punching device for post-processing of castings according to claim 4, characterized in that: The column portion of the removal piece (23) is movably inserted into the tube groove portion (1201), and the ring portion of the removal piece (23) is movably sleeved on the outside of the bottom mold (12). The left and right sides of the upper end of the column portion of the removal piece (23) are both flip-connected with half ring sleeves (25), and a torsion spring (26) is installed at the flip connection between the two.

6. A punching device for post-processing of castings according to claim 5, characterized in that: The semi-annular sleeve (25) is pressed and connected to the lower section of the tube groove wall of the tube groove portion (1201), and the middle part of the semi-annular sleeve (25) is telescopically and slidably connected to the second oblique tongue lock (27). A fifth spring (28) is installed at the sliding connection between the two, and the oblique tongue end of the second oblique tongue lock (27) is connected to the middle disk body of the pressure rod (20) in a snap-fit manner.

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