A positioning stamping forming device for hot forgings

Abstract

This invention relates to the field of metal material processing technology and discloses a positioning and stamping forming device for hot forgings, comprising a machine body, a support platform fixedly installed on the inner side of the machine body, a mounting seat detachably connected to the top of the support platform, a lower die detachably connected to the top of the mounting seat, a hydraulic cylinder installed on the inner side of the machine body, an upper die adapted to the lower die fixedly connected to the drive end of the hydraulic cylinder, a mounting rod fixedly connected to the rear side of the upper die, and a drive rack fixedly connected to the inner side of the mounting rod. By adding a pre-positioning assembly consisting of a contact rod, positioning wheel, and moving seat to the top of the lower die, and in conjunction with the linkage design of synchronously driving the clamping seats to move closer together through a gear transmission mechanism during the downward movement of the upper die, integrated processing of pre-positioning and synchronous fixing of hot forgings is achieved, eliminating the need for additional independent positioning fixtures and drive components.

Description

Technical Field

[0001] This invention relates to the field of metal material processing technology, specifically to a positioning and stamping forming device for hot forgings. Background Technology

[0002] Hot forging is a crucial process in metal processing. It involves applying pressure to hot forgings such as metal billets and sheets to induce plastic deformation, resulting in workpieces that meet pre-defined shapes and dimensions. This process is widely used in industries such as machinery manufacturing, automotive parts production, and aerospace. During the hot forging stamping process, positioning accuracy, processing efficiency, mold maintenance, and operational safety are key factors affecting processing quality and production efficiency. Therefore, positioning and stamping equipment for hot forgings is a critical piece of equipment in this field.

[0003] In existing technologies, positioning and stamping forming devices for hot forgings typically include core components such as a machine body, upper and lower dies, a drive mechanism, and positioning components. Among them, the positioning components are used to ensure the positional stability of the hot forgings during the stamping process and avoid forming defects caused by displacement; the die cleaning and cooling mechanism is used to handle the debris generated during stamping and control the die temperature to extend the die's service life and ensure processing continuity.

[0004] In terms of positioning technology, traditional positioning methods in equipment mainly fall into two categories: one is to use independent positioning fixtures (such as pneumatic fixtures and hydraulic fixtures) to position and fix the hot forgings. These fixtures require additional drive components (such as hydraulic cylinders and air pumps) and control modules, which not only increases the overall structural complexity of the equipment and raises manufacturing costs and energy consumption, but also requires separate positioning processes before stamping and clamping processes after stamping, extending the processing cycle of a single workpiece and reducing production efficiency. The other category relies on manual positioning, where operators manually adjust the position of the hot forgings on the mold. This method is not only labor-intensive and costly, but also prone to insufficient positioning accuracy due to human error. Furthermore, it is difficult to ensure the positional stability of the hot forgings during stamping, making it easy for workpieces to shift, resulting in forming defects and affecting product quality consistency. Meanwhile, although some devices attempt to integrate positioning functions, they often suffer from asynchronous positioning and mold closing actions, still requiring additional linkage control structures, failing to fundamentally simplify the device design and processing flow. Therefore, those skilled in the art propose a positioning and stamping forming device for hot forgings to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a positioning and stamping forming device for hot forgings, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning and stamping forming device for hot forgings, comprising a machine body, a support platform fixedly mounted on the inner side of the machine body, a mounting base detachably connected to the top of the support platform, a lower die detachably connected to the top of the mounting base, a hydraulic cylinder mounted on the inner side of the machine body, an upper die adapted to the lower die fixedly connected to the drive end of the hydraulic cylinder, a mounting rod fixedly connected to the rear side of the upper die, a drive rack fixedly connected to the inner side of the mounting rod, a connecting shaft movably connected to the rear center of the mounting base via a bearing, and a drive gear one and a drive gear two sequentially fixedly mounted axially at the end of the connecting shaft near the drive rack one. The rear side of the mounting base is fixedly connected to a limiting seat. Both the upper and lower sides of the limiting seat are slidably connected to drive racks two in the horizontal direction. Each of the two drive racks two is fixedly connected to a clamping seat through a connecting seat. The top of the lower mold is provided with a positioning component for pre-positioning the workpiece. When the hydraulic cylinder drives the upper mold to move downward, it simultaneously drives the mounting rod and drive racks to move downward. Through the gear transmission mechanism composed of drive gear two, connecting shaft, drive gear one and drive rack two, the vertical downward movement of drive rack one is converted into the synchronous relative horizontal movement of the two drive racks two, which in turn drives the two clamping seats to move closer to each other to clamp and fix the workpiece that has been pre-positioned by the positioning component.

[0007] Preferably, the positioning component includes multiple grooves formed inside the lower mold. Each groove is elastically connected to a movable seat via a return spring. A contact rod is fixedly connected to the top of the movable seat, and the top end of the contact rod extends to the upper surface of the lower mold. A strip groove is formed on the outer surface of the movable seat. A connecting rod is movably connected to the inner wall of the strip groove via a pivot. A positioning wheel is connected to the end of the connecting rod away from the movable seat via a connecting strip. When the workpiece is placed on the top of the lower mold, the workpiece's gravity drives the contact rod and the movable seat to move downward along the groove, causing one end of the connecting rod to slide along the inner wall of the strip groove, thereby pushing the positioning wheel to approach the workpiece side and abut against the outer wall of the workpiece, achieving initial positioning of the workpiece.

[0008] Preferably, the teeth of the second drive gear mesh with the teeth of the first drive rack, and the teeth of the first drive gear mesh with the teeth of both second drive racks simultaneously.

[0009] Preferably, the inner top of the machine body has two symmetrically arranged fixed cylinders fixedly connected. Each fixed cylinder has a rubber piston slidably connected inside. The bottom of the rubber piston is fixedly connected to a movable rod. The end of the movable rod away from the rubber piston is fixedly connected to the top of the upper mold. The outer surface of the fixed cylinder is respectively connected to an air inlet pipe and an air jet pipe. The air outlet of one air jet pipe faces the forming surface of the upper mold, and the air outlet of the other air jet pipe faces the forming surface of the lower mold. An atomizing nozzle is installed at the end of the air jet pipe. When the upper mold moves up and down, it drives the movable rod and the rubber piston to slide along the inside of the fixed cylinder, changing the air pressure inside the fixed cylinder. After the air is drawn in through the air inlet pipe, it is sprayed onto the forming surface of the mold through the air jet pipe and the atomizing nozzle to remove the fine debris generated during the stamping process.

[0010] Preferably, both the fixed cylinder and the air inlet pipe are equipped with one-way valves on their exteriors. The one-way valve on the air inlet pipe only allows gas to enter the fixed cylinder from the outside, and the one-way valve on the jet pipe only allows gas to be ejected from the fixed cylinder from the inside out.

[0011] Preferably, the mounting base has an internal mounting groove, and a rotating disk is fixedly sleeved in the middle of the connecting shaft. Two symmetrically arranged hinge rods are rotatably connected to the outer eccentric position of the rotating disk via a rotating shaft. Each hinge rod has a movable rod hinged to its end away from the rotating disk. Two push rods are slidably connected to the inner side of the mounting base along the vertical direction, and are evenly distributed around the lower mold. The top of the push rods penetrates to the forming surface of the lower mold. When the connecting shaft rotates, it drives the rotating disk to rotate synchronously, drives the hinge rods to swing and pushes the movable rods to move up and down, thereby driving the push rods to push upward, realizing the automatic ejection of the workpiece after stamping.

[0012] Preferably, a return spring is sleeved on the outside of the top rod. The top end of the return spring abuts against the inner wall of the mounting groove, and the bottom end of the return spring abuts against the central boss of the top rod. The bottom end of the top rod and the top end of the moving rod are both configured as mutually adaptable arc surface structures.

[0013] Preferably, a liquid storage tank is fixedly connected to one side of the top of the machine body, a pump body is installed on the top of the liquid storage tank, a connecting pipe is fixedly connected to the input end of the pump body, a transport pipe is fixedly connected to the output end of the pump body, one end of the transport pipe is connected to two connecting pipes two through a three-way valve, the end of the connecting pipe one away from the pump body extends into the interior of the liquid storage tank, and a one-way valve is installed inside the connecting pipe two.

[0014] Preferably, a handling robotic arm is fixedly installed on the inner side of the machine body, and a storage box is fixedly connected to the outer side of the machine body. The position of the storage box is adapted to the working range of the handling robotic arm and is used to store the stamped workpiece.

[0015] Preferably, a fixed rod is fixedly connected to the inner side of the machine body, and the end of the connecting shaft passes through the outer side of the mounting base and is fixedly connected to a swing rod. A trigger switch is installed at the front end of the mounting base and the bottom of the fixed rod. When the trigger switch on the mounting base is triggered, the handling robotic arm is controlled to place the stamped workpiece inside the storage box. When the trigger switch on the fixed rod is triggered, the pump body is controlled to indirectly spray the coolant inside the storage tank onto each mold through the connecting pipe to achieve mold cooling.

[0016] This invention provides a positioning and stamping forming device for hot forgings. It has the following advantages:

[0017] 1. This invention achieves integrated processing of pre-positioning of hot forgings and synchronous fixing of the workpiece during mold closing by adding a pre-positioning assembly consisting of a stop rod, positioning wheel, and moving seat to the top of the lower mold, combined with a linkage design where the clamping seats move closer to each other via a gear transmission mechanism during the downward movement of the upper mold. This eliminates the need for separate positioning fixtures and driving components, simplifying the overall structure of the device, reducing manufacturing costs and energy consumption, and minimizing time wastage from additional positioning processes, thus effectively improving the efficiency of hot forging stamping. Simultaneously, the pre-positioning assembly automatically centers and positions itself using the workpiece's gravity, and the clamping seats clamp and fix it synchronously during mold closing. This dual positioning significantly improves the positioning accuracy of the hot forgings, avoiding forming defects caused by workpiece displacement during stamping, thereby enhancing the processing quality and product consistency of the hot forgings.

[0018] 2. This invention achieves automatic ejection of the workpiece after stamping by using a linkage structure design where the top of the ejector rod extends through the forming surface of the lower mold and the rotating disk rotates synchronously via the rotation of the connecting shaft, thereby driving the hinge rod to swing and the moving rod to move up and down to push the ejector rod upward. This eliminates the need for manual removal of the workpiece or additional independent ejection drive devices, reducing safety hazards and operational complexity caused by manual intervention, shortening the interval between processing steps, and effectively improving the overall processing efficiency of hot forgings.

[0019] 3. This invention utilizes the up-and-down movement of the upper mold to drive a rubber piston, changing the internal air pressure of the fixed cylinder. Gas is then drawn in through the air inlet pipe and sprayed onto the mold forming surface via the jet pipe and atomizing nozzle to remove fine debris. Simultaneously, a trigger switch on the fixed rod triggers the pump to spray coolant from the storage tank through connecting pipe two to each mold, achieving a coordinated cooling design. This not only simplifies the device structure and reduces manufacturing costs and energy consumption, but also automates and synchronizes debris removal and mold cooling. It avoids debris residue affecting the stamping accuracy of subsequent workpieces, rapidly reduces mold temperature to ensure mold lifespan, and minimizes time and safety hazards associated with manual cleaning and cooling operations, effectively improving the processing efficiency and product quality stability of hot forgings. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the body structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the connecting pipe structure of the present invention;

[0023] Figure 4 This is a cross-sectional view of the mounting base of the present invention;

[0024] Figure 5 This is a schematic diagram of the abutment rod structure of the present invention;

[0025] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 This is a cross-sectional view of the lower mold of the present invention;

[0027] Figure 8 This is a schematic diagram of the clamping seat structure of the present invention;

[0028] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0029] Figure 10 This is a schematic diagram of the upper mold of the present invention.

[0030] Among them, 1. Body; 2. Support platform;

[0031] 31. Drive rack one; 32. Limit seat; 33. Drive gear one; 34. Connecting shaft; 35. Drive gear two; 36. Clamping seat; 37. Connecting seat; 38. Mounting rod; 39. Drive rack two;

[0032] 4. Remove the mold;

[0033] 51. Storage tank; 52. Connecting pipe one; 53. Pump body; 54. Connecting pipe two; 55. Transport pipe;

[0034] 61. Fixed cylinder; 62. Air inlet pipe; 63. Movable rod; 64. Jet nozzle;

[0035] 71. Rotating disc; 72. Mounting slot; 73. Hinge rod; 74. Moving rod; 75. Push rod; 76. Return spring 1;

[0036] 8. Place the mold;

[0037] 91. Abutment rod; 92. Positioning wheel; 93. Connecting strip; 94. Moving seat; 95. Strip groove; 96. Connecting rod; 97. Second return spring; 98. Slide groove;

[0038] 10. Handling robotic arm; 11. Storage box; 12. Mounting base; 13. Trigger switch; 14. Swing arm; 15. Fixing rod; 16. Hydraulic cylinder. Detailed Implementation

[0039] The technical solutions in 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.

[0040] Please see the appendix Figure 1 - Appendix Figure 10This invention provides a positioning and stamping forming device for hot forgings, including a machine body 1. A support platform 2 is fixedly installed on the inner side of the machine body 1. A mounting base 12 is detachably connected to the top of the support platform 2. A lower die 4 is detachably connected to the top of the mounting base 12. A hydraulic cylinder 16 is installed on the inner side of the machine body 1. An upper die 8 adapted to the lower die 4 is fixedly connected to the drive end of the hydraulic cylinder 16. A mounting rod 38 is fixedly connected to the rear side of the upper die 8. A drive rack 31 is fixedly connected to the inner side of the mounting rod 38. A connecting shaft 34 is movably connected to the middle of the rear side of the mounting base 12 via a bearing. The connecting shaft 34 is close to the drive rack 31. One end of rack 31 is axially fixedly fitted with drive gear 33 and drive gear 35. The rear side of mounting base 12 is fixedly connected to limit seat 32. Both the upper and lower sides of the limit seat 32 are slidably connected to drive rack 39 in the horizontal direction. The opposite sides of the two drive racks 39 are fixedly connected to clamping seats 36 through connecting seats 37. The top of the lower mold 4 is provided with a positioning component for pre-positioning the workpiece. The teeth of drive gear 35 mesh with the teeth of drive rack 31. The teeth of drive gear 33 mesh with the teeth of the two drive racks 39 at the same time. When the hydraulic cylinder 16 drives the upper mold 8 to move downward, it simultaneously drives the mounting rod 38 and the drive rack 31 to move downward. Through the gear transmission mechanism composed of the drive gear 35, the connecting shaft 34, the drive gear 33 and the drive rack 39, the vertical downward movement of the drive rack 31 is converted into the synchronous relative horizontal movement of the two drive racks 39. This causes the two clamping seats 36 to move closer to each other, so as to clamp and fix the workpiece that has been pre-positioned by the positioning component.

[0041] Specifically, the hydraulic cylinder 16 serves as the core power source. When its drive end extends downward, it drives the upper mold 8 to move downward synchronously. The mounting rod 38, which is fixedly connected to the upper mold 8, moves downward accordingly, thereby pulling the drive rack 31 on the inner side of the mounting rod 38 to make a stable vertical downward linear motion. Since the drive rack 31 maintains precise meshing with the drive gear 35, the linear motion is efficiently converted into the rotational motion of the drive gear 35. This rotational torque is transmitted to the drive gear 33 through the coaxial connecting shaft 34, causing the drive gear 33 to rotate synchronously. The drive gear 33 simultaneously meshes with the two drive racks 39 that slide horizontally within the limit seat 32. By utilizing the transmission characteristics of gears and racks, the rotational motion is converted into the synchronous relative horizontal motion of the two driving racks 39. Through the connecting seat 37, the two clamping seats 36 are driven to move closer to each other smoothly and synchronously. During this process, the positioning component on the top of the lower die 4 has already completed the pre-centering and positioning of the hot forging. The clamping seat 36 then accurately supports the positioning reference to achieve secondary clamping and fixing of the workpiece. The entire power transmission and action linkage process does not require additional independent drive components. The coordinated relationship between the downward movement of the upper die 8 and the clamping of the workpiece is established only through the gear transmission mechanism, which not only ensures the positional stability of the workpiece during the stamping process, but also simplifies the power transmission path.

[0042] The positioning assembly includes multiple slide grooves 98 formed inside the lower mold 4. Each slide groove 98 is elastically connected to a movable seat 94 via a return spring 97. A contact rod 91 is fixedly connected to the top of the movable seat 94, and the top end of the contact rod 91 extends to the upper surface of the lower mold 4. A strip groove 95 is formed on the outer surface of the movable seat 94. A connecting rod 96 is movably connected to the inner wall of the strip groove 95 via a pivot. The end of the connecting rod 96 away from the movable seat 94 is connected to a positioning wheel 92 via a connecting strip 93. When the workpiece is placed on the top of the lower mold 4, the workpiece's gravity drives the contact rod 91 and the movable seat 94 to move downward along the slide groove 98, causing one end of the connecting rod 96 to slide along the inner wall of the strip groove 95, thereby pushing the positioning wheel 92 to approach the workpiece side and abut against the outer wall of the workpiece, thus achieving initial positioning of the workpiece.

[0043] Specifically, the multiple sliding grooves 98 opened on the inner side of the lower mold 4 provide a stable vertical sliding guide for the movable seat 94. The movable seat 94 is elastically connected to the sliding grooves 98 through the second return spring 97. In the initial state, the elastic support force of the second return spring 97 causes the top of the abutment rod 91 to protrude from the upper surface of the lower mold 4. When the hot forging is placed on the top of the lower mold 4, the workpiece's own weight overcomes the elastic force of the second return spring 97, driving the abutment rod 91 to move the movable seat 94 smoothly downward along the sliding groove 98.

[0044] During the downward movement of the moving seat 94, the strip groove 95 on its outer surface slides along the groove wall through the shaft pulling the connecting rod 96. With the inclined guiding effect of the strip groove 95, the vertical downward movement of the moving seat 94 is converted into the swinging movement of the connecting rod 96. Then, the connecting bar 93 pushes the positioning wheel 92 to move synchronously towards the workpiece side until multiple positioning wheels 92 are evenly abutted against the outer wall of the workpiece. The rolling characteristics of the positioning wheel 92 reduce friction damage to the workpiece surface. At the same time, the multi-directional pressing force realizes the automatic centering and preliminary positioning of the workpiece, providing a precise positioning reference for the subsequent mold clamping process. After the stamping is completed, the elastic restoring force of the return spring 97 can drive the components to quickly return to their original positions, which is convenient for the continuous processing of the next workpiece.

[0045] Two symmetrically arranged fixed cylinders 61 are fixedly connected to the inner top of the body 1. Each fixed cylinder 61 has a rubber piston that is sealed and slidably connected inside. A movable rod 63 is fixedly connected to the bottom of the rubber piston. The end of the movable rod 63 away from the rubber piston is fixedly connected to the top of the upper mold 8. An air inlet pipe 62 and an air jet pipe 64 are respectively connected to the outer surface of the fixed cylinder 61. The air outlet end of one air jet pipe 64 faces the forming surface of the upper mold 8, and the air outlet end of the other air jet pipe 64 faces the forming surface of the lower mold 4. An atomizing nozzle is installed at the end of the air jet pipe 64. When the upper mold 8 moves up and down, it drives the movable rod 63 and the rubber piston to slide along the inside of the fixed cylinder 61, changing the air pressure inside the fixed cylinder 61. After the air is drawn in through the air inlet pipe 62, it is sprayed onto the forming surface of the mold through the air jet pipe 64 and the atomizing nozzle to remove the fine debris generated during the stamping process. Both the fixed cylinder 61 and the air inlet pipe 62 are equipped with one-way valves. The one-way valve on the air inlet pipe 62 only allows gas to enter the fixed cylinder 61 from the outside, while the one-way valve on the jet pipe 64 only allows gas to be ejected from the fixed cylinder 61 from the inside.

[0046] Specifically, the fixed cylinder 61 symmetrically arranged at the top of the machine body 1 adopts a sealed design. The rubber piston inside it is tightly fitted with the cylinder wall to ensure air pressure sealing. The movable rod 63 at the bottom of the rubber piston is directly connected to the upper mold 8. The linkage operation without additional drive components is achieved by using the power of the upper mold 8 to move up and down.

[0047] When the hydraulic cylinder 16 drives the upper mold 8 to move downward, the movable rod 63 drives the rubber piston to slide upward along the inside of the fixed cylinder 61, which compresses the space inside the cylinder and increases the air pressure. At this time, the one-way valve on the jet pipe 64 is opened, and the high-pressure gas is delivered to the atomizing nozzle at the end through the jet pipe 64. The atomizing nozzle disperses the gas into a uniform airflow stream, which is precisely sprayed toward the forming surfaces of the upper mold 8 and the lower mold 4 respectively. The impact force of the airflow is used to quickly blow away the small metal debris generated during the stamping process, so as to avoid the debris residue affecting the forming accuracy of subsequent workpieces.

[0048] When the upper die 8 moves upward after stamping is completed, the movable rod 63 drives the rubber piston to slide downward, creating a negative pressure inside the fixed cylinder 61. The one-way valve on the air inlet pipe 62 is opened, and external gas is drawn into the fixed cylinder 61 through the air inlet pipe 62 to replenish the gas and reserve gas for the next cleaning operation. The reverse conduction design of the two one-way valves strictly limits the unidirectional flow path of the gas, ensuring orderly switching between suction and jetting actions. The entire mechanism achieves automated debris cleaning through linkage with the upper die 8, which simplifies the device structure, reduces energy consumption, and can complete cleaning synchronously between stamping processes, improving processing continuity. At the same time, the airflow dispersion effect of the atomizing nozzle can prevent excessive local airflow from damaging the die or workpiece.

[0049] The mounting base 12 has an internal mounting groove 72. A rotating disk 71 is fixedly sleeved in the middle of the connecting shaft 34. Two symmetrically arranged hinge rods 73 are rotatably connected to the outer periphery of the rotating disk 71 via a rotating shaft. Each hinge rod 73 has a movable rod 74 hinged to its end away from the rotating disk 71. Two ejector rods 75 are slidably connected to the inner side of the mounting base 12 in the vertical direction, evenly distributed around the lower mold 4. The top of the ejector rod 75 extends through the forming surface of the lower mold 4. When the connecting shaft 34 rotates, it drives the rotating disk 71 to rotate synchronously, driving the hinge rods 73 to swing and pushing the movable rods 74 up and down, thereby driving the ejector rods 75 to push upward, realizing the automatic ejection of the workpiece after stamping. A return spring 76 is sleeved on the outside of the ejector rod 75. The top of the return spring 76 abuts against the inner wall of the mounting groove 72, and the bottom of the return spring 76 abuts against the central boss of the ejector rod 75. The bottom of the ejector rod 75 and the top of the movable rod 74 are both set with mutually adaptable arc surface structures.

[0050] Specifically, the mounting groove 72 inside the mounting base 12 provides a stable mounting space for each transmission component. The rotating disk 71 fixedly sleeved in the middle of the connecting shaft 34 connects two symmetrically arranged hinge rods 73 in an eccentric manner. The rotational motion of the connecting shaft 34 is converted into the reciprocating swing of the hinge rods 73 by utilizing the eccentric transmission characteristics.

[0051] When the connecting shaft 34 rotates in the reverse direction after stamping, it drives the rotating disk 71 to rotate synchronously. The hinge rod 73 swings accordingly and pushes the movable rod 74, which is hinged to it, to move vertically upward. Since the top of the movable rod 74 and the bottom of the top rod 75 adopt a matching arc surface structure, the friction and stress concentration during the transmission process can be reduced, ensuring smooth and efficient power transmission.

[0052] Two ejector rods 75 are evenly distributed around the lower mold 4, with their top ends penetrating to the forming surface of the lower mold 4. They are pushed upward synchronously by the moving rod 74, and the uniformly applied ejector force allows the stamped workpiece to smoothly detach from the forming surface of the lower mold 4, avoiding deformation or jamming of the workpiece due to uneven force. The return spring 76 sleeved on the outside of the ejector rod 75 achieves elastic limiting through the inner wall of the mounting groove 72 and the boss in the middle of the ejector rod 75. After the ejection action is completed, the elastic restoring force of the return spring 76 can quickly drive the ejector rod 75, the moving rod 74 and the hinge rod 73 to return to the initial position. There is no need to set up additional reset drive elements, which simplifies the mechanism structure and ensures the continuity of the next workpiece processing. At the same time, the entire ejection process achieves precise coordination with the stamping process through the linkage of the connecting shaft 34 and the gear transmission mechanism, improving the automation level and processing efficiency of the equipment.

[0053] A liquid storage tank 51 is fixedly connected to one side of the top of the machine body 1. A pump body 53 is installed on the top of the liquid storage tank 51. A connecting pipe 52 is fixedly connected to the input end of the pump body 53. A transport pipe 55 is fixedly connected to the output end of the pump body 53. One end of the transport pipe 55 is connected to two connecting pipes 54 through a three-way valve. The end of the connecting pipe 52 away from the pump body 53 extends into the interior of the liquid storage tank 51. A one-way valve is installed inside the connecting pipe 54.

[0054] Specifically, the liquid storage tank 51 is used to store sufficient coolant to provide a continuous liquid source for cooling the mold. The pump body 53 installed on its top serves as the power core and draws coolant from inside the liquid storage tank 51 through the connecting pipe 52. The far end of the connecting pipe 52 extends deep into the inside of the liquid storage tank 51 to ensure stable extraction of coolant and prevent the intake of sediment impurities at the bottom of the tank.

[0055] After the pump body 53 starts, the pressure generated will transport the coolant through the transport pipe 55 to the three-way valve. Through the diversion effect of the three-way valve, the coolant will be evenly distributed to the two connecting pipes 54, realizing the synchronous supply of coolant to the upper mold 8 and the lower mold 4. The one-way valve installed inside the connecting pipe 54 strictly limits the unidirectional flow direction of the coolant, avoiding the backflow of coolant which would cause unstable supply pressure or contaminate the clean coolant in the storage tank 51. At the same time, the one-way valve can also prevent debris and high-temperature gas generated during the stamping process from flowing back into the pipeline or pump body 53 through the connecting pipe 54, thus protecting the pipeline and pump body 53. The entire mechanism, with the stable power provided by the pump body 53, combined with the reasonable pipeline layout and the protective design of the one-way valve, ensures that the coolant can be accurately and efficiently delivered to the mold cooling area.

[0056] A handling robotic arm 10 is fixedly installed on the inner side of the machine body 1, and a storage box 11 is fixedly connected to the outer side of the machine body 1. The position of the storage box 11 is adapted to the working range of the handling robotic arm 10 and is used to store the stamped workpiece.

[0057] Specifically, the handling robotic arm 10 has flexible multi-dimensional motion capabilities and can accurately respond to control signals to complete actions such as gripping and transferring workpieces. Its working range is precisely planned to cover the workpiece ejection area of ​​the lower mold 4 and the opening area of ​​the storage box 11, ensuring a smooth and efficient transfer process. The storage box 11 adopts an upward-facing design, and its position is precisely matched with the working range of the handling robotic arm 10. This not only avoids the risk of workpieces falling during the transfer process, but also allows the handling robotic arm 10 to place the workpieces along the shortest path, reducing transfer time loss.

[0058] After the stamped workpiece is automatically ejected by the ejector pin 75, the handling robotic arm 10 can quickly move to the top of the lower mold 4, stably clamp the workpiece through the adapted gripping structure, and then transfer it to the storage box 11 for storage. There is no need for manual handling, which not only reduces the labor intensity of manual labor and avoids the safety hazards caused by high-temperature workpieces to operators, but also realizes the automated connection between workpiece processing and storage, reduces the process interval time, and improves the overall production efficiency. At the same time, the storage box 11 can centrally store the formed workpieces, which is convenient for subsequent unified sorting and transfer.

[0059] A fixed rod 15 is fixedly connected to the inner side of the machine body 1. The end of the connecting shaft 34 passes through the outer side of the mounting base 12 and is fixedly connected to a swing rod 14. A trigger switch 13 is installed at the front end of the mounting base 12 and the bottom of the fixed rod 15. When the trigger switch 13 on the mounting base 12 is triggered, the control of the handling robot arm 10 is used to place the stamped workpiece inside the storage box 11. When the trigger switch 13 on the fixed rod 15 is triggered, the control of the pump body 53 is used to indirectly spray the coolant inside the liquid storage tank 51 onto each mold through the connecting pipe 2 54 to achieve mold cooling.

[0060] Specifically, the two trigger switches 13 establish signal linkage with the handling robot arm 10 and the pump body 53 respectively. When the connecting shaft 34 rotates in the reverse direction after stamping and forming, it drives the swing rod 14 to swing and touch the trigger switch 13 on the mounting base 12. The trigger signal is quickly transmitted to the control system, which controls the handling robot arm 10 to start and execute the preset action, accurately transferring the ejected molded workpiece into the storage box 11. When the upper mold 8 touches the trigger switch 13 at the bottom of the fixed rod 15, the trigger signal controls the pump body 53 to start, spraying the coolant in the liquid storage tank 51 through the connecting pipe 2 54 to each mold to achieve cooling.

[0061] Working principle: The operator uses the robotic arm 10 to move the hot forging workpiece (such as a metal billet or sheet) to the forming surface of the lower mold 4, so that the workpiece is stably placed on the top of the abutment rod 91. The workpiece's own weight acts on the abutment rod 91, driving the abutment rod 91 to move the moving seat 94 downward along the slide groove 98 and compress the return spring 97. As the moving seat 94 moves downward, one end of the connecting rod 96 slides along the inner wall of the strip groove 95, and pulls the positioning wheel 92 towards the workpiece side synchronously through the connecting bar 93 until multiple positioning wheels 92 are tightly abutted against the outer wall of the workpiece, completing the automatic centering and initial positioning of the workpiece, ensuring the initial position of the workpiece is accurate.

[0062] After initial positioning, hydraulic cylinder 16 is activated, its drive end extends downward and drives upper mold 8 to move downward synchronously. During the downward movement of upper mold 8, mounting rod 38 fixed to its rear side moves downward accordingly, thereby driving drive rack 31 on the inner side of mounting rod 38 to move vertically downward. Since drive rack 31 meshes with drive gear 35, the linear motion of drive rack 31 is converted into the rotational motion of drive gear 35, which is transmitted through connecting shaft 34, driving coaxially fixed drive gear 33 to rotate synchronously. Drive gear 33 simultaneously meshes with two drive racks 39 sliding up and down inside limit seat 32, converting the rotational motion into the synchronous relative horizontal motion of the two drive racks 39, which pushes the two clamping seats 36 closer together through connecting seat 37 until the clamping seats 36 are tightly fitted to both sides of the workpiece, realizing the clamping and fixing of the workpiece and preventing the workpiece from shifting during the stamping process.

[0063] As the upper mold 8 continues to move downwards until it closes with the lower mold 4, the forming surfaces of the upper mold 8 and the lower mold 4 cooperate to apply a stamping force to the clamped and fixed workpiece, thus completing the stamping forming process of the hot forging.

[0064] After stamping, the hydraulic cylinder 16 retracts upward, causing the upper mold 8 to move upward synchronously. As the upper mold 8 moves upward, the mounting rod 38 and the drive rack 31 move upward as well, driving the connecting shaft 34 to rotate in the opposite direction via a gear transmission mechanism. When the connecting shaft 34 rotates in the opposite direction, the rotating disk 71, fixedly mounted in the middle, rotates synchronously, causing the two hinged rods 73, eccentrically connected to its outer periphery, to swing, pushing the movable rod 74, which is hinged to it, upward. Since the top of the movable rod 74 and the bottom of the ejector rod 75 are both fitted arc surfaces, when the movable rod 74 moves upward, it drives the ejector rod 75 to slide vertically upward along the inner side of the mounting base 12, compressing the return spring 76. The top of the ejector rod 75 penetrates the forming surface of the lower mold 4, pushing the stamped workpiece upward, separating the workpiece from the forming surface of the lower mold 4, thus achieving automatic ejection of the workpiece.

[0065] During the reverse rotation of the connecting shaft 34, the swing rod 14, which passes through the outer side of the mounting base 12, swings synchronously. When the swing rod 14 touches the trigger switch 13 at the front end of the mounting base 12, the trigger signal controls the start of the handling robot arm 10. The handling robot arm 10 moves to above the lower mold 4, grabs the ejected molded workpiece, and transfers it into the storage box 11 for storage, thus realizing the automated collection of processed workpieces.

[0066] After the workpiece is received, the hydraulic cylinder 16 continues to move the upper mold 8 upward. The movable rod 63 fixed at the top of the upper mold 8 moves upward accordingly, pulling the rubber piston inside the fixed cylinder 61 to slide upward along the cylinder wall, increasing the air pressure inside the fixed cylinder 61. Since the one-way valve on the jet pipe 64 only allows gas to be ejected outward, the gas in the fixed cylinder 61 is transported through the jet pipe 64 to the atomizing nozzle at the end, spraying airflow onto the forming surfaces of the upper mold 8 and the lower mold 4, blowing away the fine debris generated during the stamping process from the mold surface, thus achieving automatic mold cleaning. When the upper mold 8 moves to the preset position, it touches the trigger switch 13 at the bottom of the fixed rod 15, triggering the pump body 53 to start. The pump body 53 draws coolant from the storage tank 51 through the connecting pipe 1 52, distributes it to the two connecting pipes 2 54 through the transport pipe 55 and the three-way valve, and sprays coolant onto the forming surfaces of the upper mold 8 and the lower mold 4 through the connecting pipes 2 54, achieving rapid mold cooling and preparing for the next stamping process.

[0067] After cooling is complete, pump 53 stops working, and hydraulic cylinder 16 drives upper mold 8 back to its initial position. Push rod 75 slides downward to reset under the elastic restoring force of return spring 76, and moving seat 94 slides upward under the elastic restoring force of return spring 97, driving abutment rod 91 and positioning wheel 92 to reset. The device returns to its initial state and can proceed with the next workpiece processing cycle.

[0068] 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 positioning and stamping forming device for hot forgings, characterized in that, The system includes a body (1), a support platform (2) fixedly mounted on the inner side of the body (1), a mounting base (12) detachably connected to the top of the support platform (2), a lower mold (4) detachably connected to the top of the mounting base (12), a hydraulic cylinder (16) mounted on the inner side of the body (1), an upper mold (8) adapted to the lower mold (4) fixedly connected to the drive end of the hydraulic cylinder (16), a mounting rod (38) fixedly connected to the rear side of the upper mold (8), a drive rack (31) fixedly connected to the inner side of the mounting rod (38), a connecting shaft (34) movably connected to the middle of the rear side of the mounting base (12) via a bearing, a drive gear (33) and a drive gear (35) sequentially fixedly mounted on the end of the connecting shaft (34) near the drive rack (31) along the axial direction, and a connecting shaft (34) detachably connected to the rear side of the mounting base (12). The limiting seat (32) has two driving racks (39) that are slidably connected to the upper and lower sides of the limiting seat (32) in the horizontal direction. The two driving racks (39) are fixedly connected to the clamping seats (36) on opposite sides through the connecting seat (37). The top of the lower mold (4) is provided with a positioning component for pre-positioning the workpiece. When the hydraulic cylinder (16) drives the upper mold (8) to move downward, it simultaneously drives the mounting rod (38) and the first driving rack (31) to move downward. Through the gear transmission mechanism composed of the second driving gear (35), the connecting shaft (34), the first driving gear (33) and the second driving rack (39), the vertical downward movement of the first driving rack (31) is converted into the synchronous relative horizontal movement of the two driving racks (39), which in turn drives the two clamping seats (36) to move closer to each other, so as to clamp and fix the workpiece that has been pre-positioned by the positioning component. The positioning assembly includes multiple grooves (98) formed inside the lower mold (4). Each groove (98) is elastically connected to a movable seat (94) via a return spring (97). A stop rod (91) is fixedly connected to the top of the movable seat (94). The top end of the stop rod (91) extends to the upper surface of the lower mold (4). A strip groove (95) is formed on the outer surface of the movable seat (94). The inner wall of the strip groove (95) is movable via a rotating shaft. A connecting rod (96) is connected. The end of the connecting rod (96) away from the moving seat (94) is connected to a positioning wheel (92) via a connecting strip (93). When the workpiece is placed on the top of the lower mold (4), the workpiece gravity drives the abutment rod (91) and the moving seat (94) to move downward along the slide groove (98), causing one end of the connecting rod (96) to slide along the inner wall of the strip groove (95), thereby pushing the positioning wheel (92) to move closer to the workpiece side and abut against the outer wall of the workpiece, thus achieving the initial positioning of the workpiece. The inner top of the body (1) is fixedly connected to two symmetrically arranged fixed cylinders (61). Each fixed cylinder (61) is sealed and slidably connected to a rubber piston. The bottom of the rubber piston is fixedly connected to a movable rod (63). The end of the movable rod (63) away from the rubber piston is fixedly connected to the top of the upper mold (8). The outer surface of the fixed cylinder (61) is connected to an air inlet pipe (62) and an air jet pipe (64). The air outlet of one of the air jet pipes (64) faces the forming surface of the upper mold (8), and the air outlet of the other air jet pipe (64) faces the forming surface of the lower mold (4). An atomizing nozzle is installed at the end of the air jet pipe (64). When the upper mold (8) moves up and down, it drives the movable rod (63) and the rubber piston to slide along the inside of the fixed cylinder (61), changing the air pressure inside the fixed cylinder (61). After the air is drawn in through the air inlet pipe (62), it is sprayed onto the forming surface of the mold through the air jet pipe (64) and the atomizing nozzle to remove the small debris generated during the stamping process. The mounting base (12) has an internal mounting groove (72). A rotating disk (71) is fixedly sleeved in the middle of the connecting shaft (34). Two symmetrically arranged hinge rods (73) are rotatably connected to the outer periphery of the rotating disk (71) through a rotating shaft. Each hinge rod (73) has a moving rod (74) hinged to the end away from the rotating disk (71). Two push rods (75) are slidably connected to the inner side of the mounting base (12) in the vertical direction, which are evenly distributed around the lower mold (4). The top of the push rod (75) penetrates to the forming surface of the lower mold (4). When the connecting shaft (34) rotates, it drives the rotating disk (71) to rotate synchronously, drives the hinge rod (73) to swing and pushes the moving rod (74) to move up and down, thereby driving the push rod (75) to push upward, so as to realize the automatic ejection of the workpiece after stamping. A fixed rod (15) is fixedly connected to the inner side of the body (1). The end of the connecting shaft (34) passes through the outer side of the mounting base (12) and is fixedly connected to a swing rod (14). A trigger switch (13) is installed at the front end of the mounting base (12) and the bottom of the fixed rod (15). When the trigger switch (13) on the mounting base (12) is triggered, the handling robot arm (10) is controlled to place the stamped workpiece inside the storage box (11). When the trigger switch (13) on the fixed rod (15) is triggered, the pump body (53) is controlled to indirectly spray the coolant inside the liquid storage tank (51) onto each mold through the connecting pipe (54) to achieve mold cooling.

2. The positioning and stamping forming device for hot forgings according to claim 1, characterized in that, The teeth of the second drive gear (35) mesh with the teeth of the first drive rack (31), and the teeth of the first drive gear (33) mesh with the teeth of both second drive racks (39).

3. The positioning and stamping forming device for hot forgings according to claim 1, characterized in that, Both the fixed cylinder (61) and the air inlet pipe (62) are equipped with one-way valves. The one-way valve on the air inlet pipe (62) only allows gas to enter the fixed cylinder (61) from the outside, and the one-way valve on the jet pipe (64) only allows gas to be ejected from the fixed cylinder (61) from the outside.

4. The positioning and stamping forming device for hot forgings according to claim 1, characterized in that, The top rod (75) is fitted with a return spring (76). The top end of the return spring (76) abuts against the inner wall of the mounting groove (72), and the bottom end of the return spring (76) abuts against the central boss of the top rod (75). The bottom end of the top rod (75) and the top end of the moving rod (74) are both set as mutually compatible arc surface structures.

5. The positioning and stamping forming device for hot forgings according to claim 1, characterized in that, A liquid storage tank (51) is fixedly connected to one side of the top of the machine body (1). A pump body (53) is installed on the top of the liquid storage tank (51). A connecting pipe (52) is fixedly connected to the input end of the pump body (53). A transport pipe (55) is fixedly connected to the output end of the pump body (53). One end of the transport pipe (55) is connected to two connecting pipes (54) through a three-way valve. The end of the connecting pipe (52) away from the pump body (53) extends into the interior of the liquid storage tank (51). A one-way valve is installed inside the connecting pipe (54).

6. The positioning and stamping forming device for hot forgings according to claim 1, characterized in that, A handling robotic arm (10) is fixedly installed on the inner side of the machine body (1), and a storage box (11) is fixedly connected to the outer side of the machine body (1). The position of the storage box (11) is adapted to the working range of the handling robotic arm (10) and is used to store the stamped workpiece.

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