A robot casting processing casting apparatus and a casting process thereof

Abstract

The application discloses a kind of robot casting processing casting equipment and its casting process, it is related to die-casting machine technical field, including rack base, locking mould module is assembled above rack base, casting auxiliary mechanism is set in locking mould module, casting auxiliary mechanism includes die-casting cavity assembly and die-casting limiting component;Die-casting cavity assembly includes hollow cavity, solid core, after forming baffle is attached to solid core outer wall, and the die-casting cavity of remaining area wide of partial narrow is formed, and die-casting cavity is used to form annular casting with stepped groove in inner wall, and solid core outer wall is slidably assembled and can be compressed shrink, the effect that mould cavity is self-adapting step forming is realized, during equipment moulding process, the extrusion effect of hollow cavity makes forming baffle attach to solid core outer wall, and automatically form the stepped die-casting cavity of partial narrow, remaining area wide, without replacing mould insert, it can be one-time die-casting forming robot annular casting with stepped groove in inner wall of special-shaped machine.

Description

Technical Field

[0001] This invention relates to the field of die casting machine technology, specifically to a robotic casting equipment and its casting process. Background Technology

[0002] Robot joint ring castings are mostly variable wall thickness ring structures with stepped grooves on the inner wall. They are core load-bearing components of industrial robot arms and rotary joints. Their forming accuracy, outer wall roundness, and inner wall step flatness directly determine the overall assembly accuracy and motion stability of the robot. Currently, these irregular stepped ring castings are generally cast in one piece using horizontal die casting equipment. Existing die casting equipment mainly consists of a frame base, injection module, mold locking module, and power module. Molten metal is supplied by the injection module, and the mold is opened and locked by the mold locking module. The ring casting is formed by die casting with the mold cavity. With its advantages of high forming efficiency and good batch consistency, it is widely used in the large-scale production and processing of robot ring and cylindrical castings.

[0003] Existing conventional die-casting equipment generally employs a fixed mold assembly with a hollow cavity and a moving mold assembly with an integrated fixed solid core. This relies solely on the fixed cavity and core to form a uniform annular cavity, capable of forming conventional annular castings with uniform wall thickness, thus meeting the basic die-casting production needs of ordinary annular workpieces. However, in the production and processing of robotic irregular-shaped annular castings with stepped grooves on the inner wall and locally varying wall thickness, existing die-casting equipment and its associated mold structures still exhibit significant inherent technical defects, as detailed below:

[0004] 1. In the existing technology, the solid core is a fixed structure as a whole, and the outer wall contour size of the core cannot be adjusted. It can only form a ring-shaped die-casting cavity with uniform wall thickness. It cannot directly form irregular ring-shaped castings with stepped grooves on the inner wall and varying thickness in some areas. If it is necessary to process stepped structure workpieces, it is necessary to disassemble and replace the core inserts of different specifications. The mold has poor versatility and high mold change cost. Moreover, it cannot adapt to form stepped die-casting cavities with local narrow and wide sections through the mold's own structure. It is difficult to die-cast robot ring-shaped castings with stepped grooves in one go, and the processing adaptability is extremely poor.

[0005] 2. Existing conventional die-casting molds lack a built-in synchronous limiting demolding structure. During the demolding process between the core and the casting, there is no adaptive clamping and limiting function. After the casting cools and shrinks, it will hold the solid core tightly. When the mold is opened and demolded, the stepped structure on the inner wall of the casting will rub and scrape against the fixed core, which can easily cause chipping, scratches and damage to the inner wall steps. At the same time, the thin-walled step positions are prone to extrusion deformation and elliptical deformation, which greatly increases the product defect rate and cannot guarantee the forming accuracy and appearance quality of irregular stepped ring castings.

[0006] 3. The existing die-casting equipment has an independent molding structure and a demolding clamping structure with no mechanical linkage. The molding cavity structure is only responsible for molding the workpiece, and the demolding clamping relies on an external robot arm to clamp the end face of the workpiece at a single point. The clamping force is concentrated and the centering effect is poor. For thin-walled annular workpieces with stepped grooves, problems such as end face extrusion and indentation, workpiece displacement and collision are very likely to occur. Moreover, the two structures operate independently and are controlled separately. The equipment structure is cumbersome and has a high failure rate. It cannot achieve integrated synchronous operation of molding, avoidance, centering and demolding, and has poor adaptability to automated production.

[0007] Therefore, in view of this, the present invention proposes a robotic casting equipment and casting process to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, in a first aspect, the present invention provides a robotic casting equipment and casting process for machining castings, thereby resolving the technical problems mentioned in the background section.

[0009] To achieve the above objectives, the technical solution adopted by this invention is as follows: a robotic casting processing equipment, comprising a frame base, a mold-locking module mounted on top of the frame base, and a casting auxiliary mechanism disposed inside the mold-locking module. The casting auxiliary mechanism includes a die-casting cavity assembly and a die-casting limiting assembly. The die-casting cavity assembly includes a hollow cavity and a solid core. A forming baffle is slidably mounted on the outer wall of the solid core. When the mold is closed, the hollow cavity compresses the forming baffle and moves it towards the solid core. After the forming baffle adheres to the outer wall of the solid core, it forms a shape that is locally narrow and wide in other areas with the hollow cavity. The die-casting cavity is used to form annular castings with stepped grooves on the inner wall. When the mold is opened, the forming baffle returns to its original position by the rebound force. The die-casting limiting component includes a sloping block slide rod and a stepped retainer. The sloping block slide rod, forming baffle, and stepped retainer move synchronously. When the mold is closed, the forming baffle moves and causes the stepped retainer to disperse. The inner claws on the surface of the stepped retainer are in contact with the inner wall of the solid core, and the outer claws are away from the outer wall of the hollow cavity. When the mold is opened, the forming baffle returns to its original position and causes the stepped retainer to retract. The inner claws are away from the inner wall of the solid core, and the outer claws are in contact with the outer wall of the annular casting, thus completing the centering, lifting, and demolding of the workpiece.

[0010] Furthermore, an injection module is fixedly mounted on the upper right side of the frame base. An injection cylinder is installed horizontally inside the injection module. The discharge end of the injection cylinder is set towards the mold-locking module and is used to deliver molten metal into the die-casting cavity after mold closing. A power module is mounted on the left side of the frame base. The power module is connected to the injection module and the mold-locking module through hydraulic pipelines to provide hydraulic drive power for the moving parts.

[0011] Furthermore, the mold-locking module is assembled between the injection module and the power module. The mold-locking module includes a guide pillar base, a mold-moving cylinder, a fixed mold base plate, and a moving mold base plate. The guide pillar base is horizontally assembled along the length of the machine frame base. The fixed mold base plate is attached to the discharge end face of the injection module. The moving mold base plate is slidably assembled outside the guide pillar base. The output end of the mold-moving cylinder is fixedly assembled with the moving mold base plate, driving the moving mold base plate to reciprocate and translate along the guide pillar base to realize the mold closing and opening actions.

[0012] Furthermore, the hollow cavity is fixedly assembled to the side wall of the fixed mold base plate, and the solid core is coaxially fixedly assembled to the side wall of the moving mold base plate.

[0013] Furthermore, the diameter of the forming baffle is larger than the diameter of the solid core but smaller than the diameter of the hollow cavity.

[0014] Furthermore, in the initial state, the forming baffle and the outer wall of the solid core are far apart, the forming baffle is in an outward convex state, and the solid core has a through groove inside.

[0015] Furthermore, one end of the inclined block slide rod is fixedly mounted to the side wall of the forming baffle, and the other end passes through the interior of the solid core. A four-jaw chuck is fixedly mounted on the surface of the moving mold base plate, and the four-jaw chuck is coaxially arranged with the solid core.

[0016] Furthermore, the four-jaw chuck has a sliding channel adapted to the inclined block slide bar on its central surface, and the four-jaw chuck has at least four sets of limiting slide grooves evenly distributed along the circumference, with a stepped chuck seat slidably assembled inside each set of limiting slide grooves.

[0017] Furthermore, the stepped card holder has an inner claw fixedly mounted on the inner surface of the solid core, and an outer claw fixedly mounted on the outer surface of the stepped card holder. The inner and outer claws move radially along the limiting groove synchronously with the stepped card holder.

[0018] Secondly, the present invention provides a robotic casting process for machining castings, comprising the following steps:

[0019] S1: Equipment preparation: Check the connection stability of each component of the injection module, mold clamping module and power module, and confirm that the injection barrel, guide pillar base and mold moving cylinder are operating normally; check the overall condition of the casting auxiliary mechanism to ensure that there are no jamming faults;

[0020] S2: Equipment pre-adjustment: Start the equipment through the external control components, adjust the hydraulic output parameters of the power module, and match the injection speed of the injection module and the mold opening and closing stroke of the mold locking module respectively; confirm that the initial state of the forming baffle is outward protruding and far away from the outer wall of the solid core, while ensuring that the four-jaw chuck and the solid core are coaxial, and reserve space for normal die casting and workpiece demolding.

[0021] S3: Mold Closing Die Casting Operation: The equipment is activated in automatic mode. The mold-moving cylinder drives the moving mold base plate to move along the guide post base, causing the solid core to close into the hollow cavity on the side of the fixed mold base plate. During the mold closing process, the forming baffle is squeezed against the outer wall of the solid core, forming a stepped die casting cavity that is narrow in some areas and wide in others. At the same time, the stepped clamping seats disperse, so that the inner clamping claws are attached to the inner wall of the solid core and the outer clamping claws are away from the outer wall of the hollow cavity, completely avoiding the die casting cavity. Subsequently, the injection module delivers molten metal into the die casting cavity through the injection cylinder, completing the stepped ring casting.

[0022] S4: Mold opening and demolding operation: After the casting has cooled and solidified, control the mold moving cylinder to drive the moving mold base plate to reset and open the mold. The solid core moves away from the hollow cavity. After the forming baffle loses the extrusion pressure, it relies on the rebound force to reset and protrude outward. At the same time, the inclined block slide rod drives the stepped card seat to close, so that the inner card claws are separated from the inner wall of the solid core, and the outer card claws simultaneously fit against the outer wall of the ring casting to center and lift the formed workpiece.

[0023] S5: Finished Product Inspection and Equipment Maintenance: After demolding, remove the ring casting with stepped grooves on the inner wall and check whether the thickness of the stepped wall and the appearance forming quality of the casting meet the standards; regularly clean the impurities inside the hollow cavity, solid core and limiting slide, and lubricate and maintain the forming baffle and the expansion and contraction parts of the stepped card seat to ensure that the opening and closing of the mold and the linkage demolding action of the equipment are smooth, and continuously ensure the accuracy and stability of the continuous casting operation of the equipment.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] (1) The present invention achieves the effect of adaptive stepped forming of mold cavity by slidingly assembling a forming baffle that can be compressed and spring-reset on the outer wall of the solid core. This overcomes the disadvantage that the traditional one-piece fixed core can only form ring castings with equal wall thickness and cannot form the stepped groove structure of the inner wall in one piece. During the mold closing process, the forming baffle is made to fit the outer wall of the solid core by the squeezing action of the hollow cavity, and automatically forms a stepped die casting cavity that is narrow in some areas and wide in other areas. It can form a non-circular robot ring casting with stepped grooves on the inner wall in one die casting without changing the mold inserts or secondary machining.

[0026] Furthermore, by relying on the reset spring between the core and the baffle, the structure is automatically reset after mold opening, ensuring uniform molding of the mold cavity each time, effectively improving the molding consistency and dimensional accuracy of the stepped groove, greatly reducing mold changeover costs and workpiece processing steps, and significantly improving the overall molding efficiency and molding adaptability of irregular stepped castings.

[0027] (2) This device adopts a mechanical synchronous linkage structure of forming baffle, inclined block slide bar and stepped card seat to achieve adaptive working condition switching effect of automatic avoidance when closing mold and automatic clamping when opening mold. It solves the problem of traditional die casting molds having no built-in avoidance structure and easy interference during filling. Under the die casting working condition of mold closing, the forming baffle expands outward and drives the inclined block slide bar to slide, causing the stepped card seat to climb up and spread outward along the inclined surface. This makes the inner card claw fit against the inner wall of the core and the outer card claw completely away from the die casting cavity area, avoiding the metal liquid filling path throughout the process. It eliminates defects such as missing material, cold shut and incomplete forming caused by the card claw blocking the cavity, and ensures that the molten metal liquid can completely fill the interior of the stepped die casting cavity, greatly improving the integrity and appearance quality of the casting. It eliminates the adverse effects of mechanical interference on the die casting quality from the structural root.

[0028] Furthermore, after the mold is opened, the forming baffle resets, causing the inclined block slide rod to release the top clamping limit. Under the action of the connecting spring rebound force, the stepped card seat automatically falls back and resets along the inclined surface and retracts inward, so that the outer claws fit against the outer wall of the ring casting to form a circumferential multi-point uniform support. This can effectively counteract the friction force of the casting cooling and shrinking and holding the solid core, and avoid the inner wall stepped structure from being scraped during demolding and the thin-walled position from being squeezed and deformed. No external robot arm is required for positioning throughout the process. At the same time, the forming, avoidance and demolding are integrated into a linkage operation, simplifying the equipment structure and adapting to automated continuous production conditions. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the axial view of the three-dimensional structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the frontal planar structure of the present invention;

[0031] Figure 3 This is a three-dimensional schematic diagram of the relevant components of the mold-locking module of the present invention;

[0032] Figure 4 This is a plan view of the die-casting cavity assembly before mold closing according to the present invention;

[0033] Figure 5 This is a planar schematic diagram of the die-casting cavity assembly after mold closing according to the present invention;

[0034] Figure 6 This is a three-dimensional schematic diagram of the die-casting cavity assembly after mold closing according to the present invention;

[0035] Figure 7 This is a planar schematic diagram showing the positional relationship between the hollow cavity and the solid core after mold closing according to the present invention;

[0036] Figure 8 This is a three-dimensional schematic diagram of the die-casting limiting component of the present invention;

[0037] Figure 9 This is a planar schematic diagram of the die-casting limiting component of the present invention;

[0038] Figure 10 This is a planar schematic diagram of the connection state between the molding baffle and the solid core of the present invention;

[0039] Figure 11 This is a three-dimensional schematic diagram of the relevant components of the die-casting limiting assembly of the present invention;

[0040] Figure 12 This is a planar schematic diagram showing the positional relationship between the die-casting cavity assembly and the die-casting limiting assembly before mold closing, according to the present invention.

[0041] Figure 13 This is a planar schematic diagram showing the positional relationship between the die-casting cavity assembly and the die-casting limiting assembly after mold closing according to the present invention.

[0042] The diagram is labeled as follows: 1. Frame base; 2. Injection module; 21. Injection cylinder; 3. Mold locking module; 31. Guide pillar base; 32. Mold moving cylinder; 33. Fixed mold base plate; 34. Moving mold base plate; 4. Power module; 5. Casting auxiliary mechanism; 51. Die casting cavity assembly; 511. Hollow cavity; 512. Solid core; 513. Forming baffle; 514. Die casting cavity; 52. Die casting limiting assembly; 521. Inclined block slide bar; 522. Four-jaw chuck; 523. Limiting slide groove; 524. Stepped chuck seat; 525. Inner chuck; 526. Outer chuck. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that the frame base 1, injection module 2, mold locking module 3, and power module 4 in this equipment constitute the basic die-casting operation carrier of the whole machine. Among them, the frame base 1 bears all components, the injection module 2 realizes the pressurization and filling of molten metal liquid, the mold locking module 3 completes the opening, closing and locking of the mold, and the power module 4 provides hydraulic power for the whole machine. All of these are common existing technologies for horizontal die-casting machines.

[0045] The injection module 2 relies on its internal injection energy storage assembly to accumulate instantaneous high-pressure power. Through a segmented oil circuit, the injection cylinder drives the injection punch to push the molten aluminum liquid in the injection cylinder 21, which is then fed into the die-casting cavity via the gating system. Its nitrogen storage tank energy storage logic, two-stage injection oil circuit control, and punch cooling and lubrication system are all conventional structures known in the art. The mold-locking module 3 relies on a mold-moving cylinder 32 to drive a mold-locking toggle mechanism to amplify the mold-locking thrust. Four guide pillar bases 31 constrain the moving mold base plate 34 to smoothly reciprocate horizontally. The fixed mold base plate 33 and the moving mold base plate 34 respectively achieve the fixed assembly of the hollow cavity 511 and the solid core 512 molds. The external ejection and demolding structure consists of an ejector cylinder and a reset rod. The elbow force amplification principle, the guide pillar parallel guiding constraint logic, the reciprocating drive mode of the mold moving cylinder 32, and the mold base plate assembly and positioning structure are all common designs of existing mature die casting equipment. The power module 4 supplies pressurized oil to each cylinder of the injection module 2 and the mold locking module 3 through multiple hydraulic pipelines. The oil pressure regulation, pipeline distribution, and hydraulic cooling circulation control methods are all known technologies. Given the commonality of the above-mentioned basic bearing, injection filling, mold locking opening and closing, and hydraulic power related structures, the improvement of this invention does not involve this part of the structure, and its specific structure, transmission and control principle will not be described in detail later.

[0046] Example 1:

[0047] Please refer to Figure 1 - Figure 13 As shown, a robotic casting equipment includes a frame base 1, a mold-locking module 3 mounted on top of the frame base 1, and a casting auxiliary mechanism 5 inside the mold-locking module 3. The casting auxiliary mechanism 5 includes a die-casting cavity assembly 51 and a die-casting limiting assembly 52. ​​The die-casting cavity assembly 51 includes a hollow cavity 511 and a solid core 512. A forming baffle 513 is slidably mounted on the outer wall of the solid core 512. When the mold is closed, the hollow cavity 511 extrudes the forming baffle 513 and moves it toward the solid core 512. After the forming baffle 513 fits against the outer wall of the solid core 512, it forms a die-casting cavity 514 with the hollow cavity 511, which is narrow in some areas and wide in other areas. The die-casting cavity 514 is used to form a stepped inner wall. When the mold is opened, the forming baffle 513 returns to its original position by rebound force. The die-casting limiting component 52 includes a sloping block slide rod 521 and a stepped card seat 524. The sloping block slide rod 521, the forming baffle 513 and the stepped card seat 524 move synchronously. When the mold is closed, the forming baffle 513 moves and causes the stepped card seat 524 to disperse. The inner claw 525 on the surface of the stepped card seat 524 is attached to the inner wall of the solid core 512 and the outer claw 526 is away from the outer wall of the hollow cavity 511. When the mold is opened, the forming baffle 513 returns to its original position and causes the stepped card seat 524 to close. The inner claw 525 is away from the inner wall of the solid core 512 and the outer claw 526 is attached to the outer wall of the annular casting, thus completing the centering and demolding of the workpiece.

[0048] It should be noted that an injection module 2 is fixedly mounted on the upper right side of the frame base 1. An injection cylinder 21 is horizontally mounted inside the injection module 2, with the discharge end of the injection cylinder 21 facing the mold-locking module 3. It is used to deliver molten metal into the die-casting cavity 514 after mold closing. A power module 4 is mounted on the left side of the frame base 1. The power module 4 is connected to the injection module 2 and the mold-locking module 3 through hydraulic lines to provide hydraulic drive power for the moving parts. The mold-locking module 3 is mounted on the injection module 2. Between the injection module 2 and the power module 4, the mold locking module 3 includes a guide pillar base 31, a mold moving cylinder 32, a fixed mold base plate 33, and a moving mold base plate 34. The guide pillar base 31 is horizontally assembled along the length of the machine frame base 1. The fixed mold base plate 33 is attached to the discharge end face of the injection module 2. The moving mold base plate 34 is slidably assembled outside the guide pillar base 31. The output end of the mold moving cylinder 32 is fixedly assembled with the moving mold base plate 34, driving the moving mold base plate 34 to reciprocate and translate along the guide pillar base 31 to realize the mold closing and opening actions.

[0049] Please refer to Figure 4 - Figure 7 As shown, the hollow cavity 511 is fixedly mounted on the side wall of the fixed mold base plate 33, and the solid core 512 is coaxially fixedly mounted on the side wall of the moving mold base plate 34. The diameter of the forming baffle 513 is larger than the diameter of the solid core 512 but smaller than the diameter of the hollow cavity 511. In the initial state, the forming baffle 513 and the outer wall of the solid core 512 are far apart, and the forming baffle 513 protrudes outward. The solid core 512 has a through groove inside.

[0050] Please refer to Figure 8 - Figure 13 As shown, one end of the inclined block slide rod 521 is fixedly mounted to the side wall of the forming baffle 513, and the other end passes through the solid core 512. A four-jaw chuck 522 is fixedly mounted on the surface of the moving mold base plate 34. The four-jaw chuck 522 is coaxially arranged with the solid core 512. The central surface of the four-jaw chuck 522 is provided with a sliding channel adapted to the inclined block slide rod 521. At least four sets of limiting slide grooves 523 are evenly provided in the circumferential direction of the four-jaw chuck 522. A stepped card seat 524 is slidably mounted inside each set of limiting slide grooves 523. An inner jaw 525 is fixedly mounted on the surface of the stepped card seat 524 located inside the solid core 512. An outer jaw 526 is fixedly mounted on the surface of the stepped card seat 524 located outside the solid core 512. The inner jaw 525 and the outer jaw 526 move radially along the limiting slide groove 523 synchronously with the stepped card seat 524.

[0051] Specifically, such as Figure 2 As shown, the entire machine is in a stable mold-opening standby state, the moving mold base plate 34 is stationary in its initial position away from the fixed mold base plate 33, and the hollow cavity 511 and the solid core 512 are completely separated, as shown. Figure 4As shown, the forming baffle 513 adopts an externally protruding design. Under normal operating conditions, the forming baffle 513 maintains an externally protruding state that is far from the outer wall of the solid core 512, such as... Figure 8 and Figure 9 As shown, at this time, the inclined block slide bar 521 is located inside the central sliding channel of the four-jaw chuck 522, combined with Figure 11 As shown, the sliding shaft at the bottom of the stepped card holder 524 abuts against the lowest position of the inclined surface of the inclined block slide rod 521, so that the four sets of stepped card holders 524 remain in an inwardly retracted state along the limiting slide groove 523, as... Figure 12 As shown, at this time, the inner jaw 525 is away from the inner wall of the solid core 512, and the outer jaw 526 is away from the outer wall of the solid core 512.

[0052] The equipment starts the mold closing process, such as Figure 5 and Figure 6 As shown, the moving mold cylinder 32 drives the moving mold base plate 34 to translate along the guide post base 31 towards the fixed mold base plate 33, causing the solid core 512 to move towards the hollow cavity 511 as a whole; the end face corresponding to the hollow cavity 511, that is, the surface of the fixed mold base plate 33, contacts the protruding forming baffle 513 and continuously squeezes the forming baffle 513, causing the forming baffle 513 to contract towards the inside of the solid core 512; at this time, the return spring assembled between the solid core 512 and the forming baffle 513 is compressed and stores energy, such as Figure 10 As shown, the return spring is located inside the cavity of the solid core 512; one end of the return spring is fixedly mounted on the inner wall of the solid core 512 cavity, and the other end is fixedly mounted on the end face of the forming baffle 513. During the mold closing process, the forming baffle 513 is squeezed and moves towards the solid core 512 side, compressing the return spring to store energy; the forming baffle 513 finally fits against the outer wall of the solid core 512, as shown. Figure 7 As shown, at this time, the outer ring of the forming baffle 513 forms a narrow gap with the inner wall of the hollow cavity 511, and the remaining outer wall of the solid core 512 forms a wide gap with the hollow cavity 511, together forming a stepped die-casting cavity 514 with locally narrow and locally wide gaps. Meanwhile, as... Figure 13 As shown, during the movement of the forming baffle 513, the inclined block slide rod 521 will be moved inward simultaneously. The sliding shaft below the stepped card seat 524 will climb up along the inclined surface of the inclined block slide rod 521, causing the stepped card seat 524 to spread outward, so that the inner claw 525 fits against the inner wall of the solid core 512 and the outer claw 526 moves away from the outer wall of the hollow cavity 511 after mold closing, completely avoiding the die casting filling path.

[0053] After the mold is closed and locked, the power module 4 provides hydraulic power to the injection module 2. The injection module 2 injects the molten metal into the stepped die-casting cavity 514 at high speed through the injection cylinder 21. The molten metal fully fills the cavity structure with alternating wide and narrow sections. After cooling and solidification, it forms an annular casting with stepped grooves on the inner wall. Throughout the filling process, the die-casting limiting component 52 always maintains an expanded and avoidance state, with no structure obstructing the cavity space of the die-casting cavity 514, ensuring the quality of the casting.

[0054] After the casting has cooled and solidified, the mold-moving cylinder 32 drives the moving mold base plate 34 to retract, and the solid core 512 moves away from the hollow cavity 511 along with the moving mold base plate 34, completely eliminating the compressive constraint force on the forming baffle 513; the return spring, which was compressed during mold closing, releases its elastic potential energy, pushing the forming baffle 513 to slide outward and reset, restoring the forming baffle 513 to its initial convex state, and simultaneously driving the inclined block slide rod 521 to slide outward and release the clamping limit; since each set of limit slide grooves 523 of the four-jaw chuck 522 is equipped with a stepped chuck seat 524 through a connecting spring, in the inclined... After the clamping force of the surface block slide bar 521 is released, the stepped card seat 524 automatically slides smoothly back to the lowest position along the inclined surface of the inclined surface block slide bar 521 under the rebound force of the spring connected inside the limiting slide groove 523. This causes the four sets of stepped card seats 524 to synchronously retract and reset inward. During the retraction process, the inner claw 525 smoothly disengages from the inner wall of the solid core 512, and the outer claw 526 synchronously retracts and moves radially to fit against the outer wall of the annular casting. This forms a circumferential multi-point uniform lifting and limiting of the molded casting, effectively offsetting the demolding friction force of the casting cooling and holding the core, and realizing the centering and smooth demolding of the workpiece.

[0055] After demolding, the external material handling mechanism can directly remove the finished casting that has been lifted and fixed by the external claw 526, completing a single die casting process. After the material is unloaded, the equipment remains in the open mold standby state, and all structures maintain the initial avoidance posture, waiting for the next mold closing die casting operation to realize continuous automated cycle production.

[0056] Example 2:

[0057] The casting process for robotic casting includes the following steps:

[0058] S1: Equipment preparation: Check the stability of the connections of each component of the injection module 2, mold locking module 3 and power module 4, and confirm that the injection cylinder 21, guide pillar base 31 and mold moving cylinder 32 are operating normally; check the overall condition of the casting auxiliary mechanism 5 to ensure that there are no jamming faults.

[0059] S2: Equipment pre-adjustment: Start the equipment through the external control components, adjust the hydraulic output parameters of the power module 4, and match the injection speed of the injection module 2 and the mold opening and closing stroke of the mold clamping module 3 respectively; confirm that the initial state of the forming baffle 513 is outward protruding and far away from the outer wall of the solid core 512, while ensuring that the four-jaw chuck 522 and the solid core 512 are coaxial, and reserve space for normal die casting and workpiece demolding.

[0060] S3: Mold Closing Die Casting Operation: Start the automatic operation mode of the equipment. The mold moving cylinder 32 drives the moving mold base plate 34 to move along the guide post base 31, causing the solid core 512 to close the mold to the hollow cavity 511 on the side of the fixed mold base plate 33. During the mold closing process, the forming baffle 513 is squeezed and shrinks against the outer wall of the solid core 512, forming a stepped die casting cavity 514 that is narrow in some areas and wide in other areas. At the same time, the stepped clamping seat 524 is dispersed, so that the inner clamping claw 525 is attached to the inner wall of the solid core 512 and the outer clamping claw 526 is away from the outer wall of the hollow cavity 511, completely avoiding the die casting cavity 514. Then the injection module 2 delivers molten metal liquid into the die casting cavity 514 through the injection cylinder 21 to complete the stepped ring casting die casting.

[0061] S4: Mold opening and demolding operation: After the casting has cooled and solidified, control the mold moving cylinder 32 to drive the moving mold base plate 34 to reset and open the mold. The solid core 512 moves away from the hollow cavity 511. After the forming baffle 513 loses the extrusion pressure, it returns to its original position and protrudes outward by relying on the rebound force. At the same time, the inclined block slide rod 521 drives the stepped card seat 524 to close, so that the inner card claw 525 disengages from the inner wall of the solid core 512, and the outer card claw 526 simultaneously fits into the outer wall of the annular casting to center and lift the formed workpiece.

[0062] S5: Finished Product Inspection and Equipment Maintenance: After demolding, remove the ring casting with stepped grooves on the inner wall and check whether the thickness of the stepped wall and the appearance forming quality of the casting meet the standards; regularly clean the impurities inside the hollow cavity 511, solid core 512 and limiting slide 523, and lubricate and maintain the expansion and contraction parts of the forming baffle 513 and stepped card seat 524 to ensure that the opening and closing of the mold and the linkage demolding action of the equipment are smooth, and continuously ensure the accuracy and stability of the continuous casting operation of the equipment.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A robotic casting processing equipment, comprising a frame base (1), wherein a mold-locking module (3) is mounted on the frame base (1), characterized in that: The mold locking module (3) is provided with a casting auxiliary mechanism (5), which includes a die casting cavity assembly (51) and a die casting limiting assembly (52). The die-casting cavity assembly (51) includes a hollow cavity (511) and a solid core (512). A forming baffle (513) is slidably fitted on the outer wall of the solid core (512). When the mold is closed, the hollow cavity (511) squeezes the forming baffle (513) to move towards the solid core (512). After the forming baffle (513) fits against the outer wall of the solid core (512), it forms a die-casting cavity (514) with the hollow cavity (511) that is narrow in some areas and wide in the rest. The die-casting cavity (514) is used to form an annular casting with stepped grooves on the inner wall. When the mold is opened, the forming baffle (513) returns to its original position by relying on the rebound force. The die-casting limiting component (52) includes a sloping block slide bar (521) and a stepped card seat (524). The sloping block slide bar (521), the forming baffle (513) and the stepped card seat (524) move synchronously. When the mold is closed, the forming baffle (513) moves and causes the stepped card seat (524) to disperse. The inner claw (525) on the surface of the stepped card seat (524) fits against the inner wall of the solid core (512) and the outer claw (526) moves away from the outer wall of the hollow cavity (511). When the mold is opened, the forming baffle (513) resets and causes the stepped card seat (524) to close. The inner claw (525) moves away from the inner wall of the solid core (512) and the outer claw (526) fits against the outer wall of the annular casting, thus completing the centering and lifting of the workpiece for demolding.

2. The robotic casting equipment for machining castings according to claim 1, characterized in that: An injection module (2) is fixedly mounted on the upper right side of the frame base (1). An injection cylinder (21) is installed horizontally inside the injection module (2). The discharge end of the injection cylinder (21) is set towards the mold locking module (3) and is used to deliver molten metal liquid into the die casting cavity (514) after mold closing. A power module (4) is mounted on the left side of the frame base (1). The power module (4) is connected to the injection module (2) and the mold locking module (3) through hydraulic pipelines to provide hydraulic drive power for the moving parts.

3. The robotic casting equipment for machining castings according to claim 2, characterized in that: The mold-locking module (3) is assembled between the injection module (2) and the power module (4). The mold-locking module (3) includes a guide pillar base (31), a mold-moving cylinder (32), a fixed mold base plate (33), and a moving mold base plate (34). The guide pillar base (31) is horizontally assembled along the length of the frame base (1). The fixed mold base plate (33) is attached to the discharge end face of the injection module (2). The moving mold base plate (34) is slidably assembled outside the guide pillar base (31). The output end of the mold-moving cylinder (32) is fixedly assembled with the moving mold base plate (34), driving the moving mold base plate (34) to reciprocate along the guide pillar base (31) to realize the mold closing and opening actions.

4. The robotic casting processing equipment according to claim 1, characterized in that: The hollow cavity (511) is fixedly assembled to the side wall of the fixed mold base plate (33), and the solid core (512) is coaxially fixedly assembled to the side wall of the moving mold base plate (34).

5. The robotic casting processing equipment according to claim 4, characterized in that: The diameter of the forming baffle (513) is larger than the diameter of the solid core (512) and smaller than the diameter of the hollow cavity (511).

6. The robotic casting equipment for machining castings according to claim 5, characterized in that: In the initial state, the forming baffle (513) and the outer wall of the solid core (512) are far apart from each other, the forming baffle (513) is in a convex state, and the solid core (512) has a through groove inside.

7. The robotic casting equipment for machining castings according to claim 3, characterized in that: One end of the inclined block slide bar (521) is fixedly mounted on the side wall of the forming baffle (513), and the other end is inserted into the solid core (512). A four-jaw chuck (522) is fixedly mounted on the surface of the moving mold base plate (34), and the four-jaw chuck (522) is coaxially arranged with the solid core (512).

8. The robotic casting processing equipment according to claim 7, characterized in that: The four-jaw chuck (522) has a sliding channel adapted to the inclined block slide rod (521) on its central surface, and the four-jaw chuck (522) has at least four sets of limiting slide grooves (523) evenly distributed in the circumferential direction. Each set of limiting slide grooves (523) is equipped with a stepped card seat (524) through a connecting spring.

9. The robotic casting equipment for machining castings according to claim 8, characterized in that: The stepped card holder (524) is fixedly equipped with an inner claw (525) on the inner side of the solid core (512), and an outer claw (526) is fixedly equipped on the outer side of the stepped card holder (524). The inner claw (525) and the outer claw (526) move radially along the limiting groove (523) synchronously with the stepped card holder (524).

10. A robotic casting process, applied to a robotic casting equipment according to any one of claims 1-9, characterized in that: Includes the following steps: S1: Equipment preparation: Check the connection stability of each component of the injection module (2), mold locking module (3) and power module (4), and confirm that the injection cylinder (21), guide pillar base (31) and mold moving cylinder (32) are operating normally; check the overall condition of the casting auxiliary mechanism (5) to ensure that there is no jamming fault; S2: Equipment pre-adjustment: Start the equipment through the external control components, adjust the hydraulic output parameters of the power module (4), and match the injection speed of the injection module (2) and the mold opening and closing stroke of the mold clamping module (3) respectively; confirm that the initial state of the forming baffle (513) is outward and far away from the outer wall of the solid core (512), while ensuring that the four-jaw chuck (522) and the solid core (512) remain coaxial, and reserve space for normal die casting and workpiece demolding; S3: Mold closing die casting operation: Start the automatic operation mode of the equipment, the mold moving cylinder (32) drives the moving mold base plate (34) to move along the guide post base (31), and drives the solid core (512) to close the mold to the hollow cavity (511) on the side of the fixed mold base plate (33); during the mold closing process, the forming baffle (513) is squeezed to fit and shrink against the outer wall of the solid core (512), forming a stepped die casting cavity (514) that is narrow in some areas and wide in other areas; at the same time, the linkage stepped card seat (524) disperses, so that the inner card (525) fits against the inner wall of the solid core (512) and the outer card (526) moves away from the outer wall of the hollow cavity (511), completely avoiding the die casting cavity (514); then the injection module (2) delivers molten metal liquid into the die casting cavity (514) through the injection cylinder (21) to complete the stepped ring casting die casting; S4: Mold opening and demolding operation: After the casting has cooled and solidified, control the mold moving cylinder (32) to drive the moving mold base plate (34) to reset and open the mold. The solid core (512) moves away from the hollow cavity (511). After the forming baffle (513) loses the extrusion pressure, it returns to its original position and protrudes outward by relying on the spring force. At the same time, the inclined block slide rod (521) drives the stepped card seat (524) to close, so that the inner card claw (525) is separated from the inner wall of the solid core (512), and the outer card claw (526) simultaneously fits against the outer wall of the annular casting to center and lift the formed workpiece. S5: Finished product inspection and equipment maintenance: After demolding, take out the ring casting with stepped grooves on the inner wall and check whether the thickness of the stepped wall and the appearance molding quality of the casting meet the standards; regularly clean the impurities inside the hollow cavity (511), solid core (512) and limiting slide (523), and lubricate and maintain the expansion and contraction parts of the forming baffle (513) and stepped card seat (524) to ensure that the opening and closing of the mold and the linkage demolding action of the equipment are stable, and continuously ensure the accuracy and stability of the continuous casting operation of the equipment.

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