A hot forging die with an adjustable local heating structure
By setting a honeycomb plate with embedded heating rods in the hot forging die, temperature differentiation control of complex shapes and different parts of the hot forging is achieved, solving the problem that existing dies cannot meet the temperature differentiation requirements and improving the machining accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KEJIA (CHANGXING) MOULD BASE MFG CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-26
AI Technical Summary
Existing hot forging dies typically employ overall heating, which cannot meet the complex shapes of hot forgings and the differentiated temperature requirements of different parts.
A hot forging die with an adjustable local heating structure was designed. By setting a honeycomb plate with embedded heating rods on the back of the die, multiple heating rods can be controlled individually, and selective heating can be carried out according to the complex shape of the hot forging and the temperature requirements of different parts.
It enables differentiated temperature control for complex shapes and different parts of hot forgings, improving hot forging effect and machining accuracy.
Smart Images

Figure CN224273148U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a hot forging die, and more particularly to a hot forging die with an adjustable local heating structure applied in the field of hot forging die technology. Background Technology
[0002] Hot forging casting technology has a wide range of applications, from military aerospace parts to civilian valve plastic parts. Hot forging technology is implemented by hot forging molds. Common hot forging molds are mainly composed of an upper mold and a lower mold. The upper mold is installed on the stamping equipment, and the forging billet is placed on the lower mold. There are product cavities between the upper and lower molds that are combined to form the shape of the hot forged product.
[0003] Chinese patent CN211248135U discloses a hot forging die with local heating function. This utility model uses a die with heating wires on both sides to facilitate precise heating of the part to be hot forged. By setting up a contact switch and other structures, it ensures that the heat can be applied to the raw material before the forging force is applied, thereby avoiding problems that affect the hot forging effect. By setting up a circulating water structure under the die groove, the circulating water flow and the external connecting pipe remove the high temperature generated after hot forging, thereby achieving the effect of convenient unloading.
[0004] Existing hot forging dies typically employ an overall heating method, which cannot meet the complex shapes of hot forgings and the differentiated temperature requirements of different parts. Utility Model Content
[0005] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that existing hot forging dies usually adopt the method of overall heating, which cannot meet the temperature requirements of complex shapes and different parts of hot forgings.
[0006] To address the aforementioned problems, this utility model provides a hot forging die with an adjustable local heating structure, comprising a device body, a water collection tank fixedly connected to the device body, a hydraulic cylinder fixedly connected to the top of the device body, a connecting rod connected to the movable end of the hydraulic cylinder, an installation groove detachably connected to both the water collection tank and the bottom of the connecting rod, a second slot being provided at one end of the installation groove, a die detachably connected to the second slot, a set of screw holes symmetrically provided at both ends of the second slot and both ends of the die, a first screw being threaded into the screw holes, a first slot being provided at the end of the installation groove away from the die, a sealing plate being connected to the top of the first slot by a screw, a honeycomb plate being embedded in the first slot, a plurality of inner holes being equidistantly provided on the honeycomb plate, heating rods being inserted into the inner holes, a plurality of corresponding heat-conducting blocks being installed in the first slot below the inner holes, a conductive cover being snapped onto the top of the heating rod, an electrical connection port being provided at the bottom of the conductive cover, a plurality of electrical terminals corresponding to the electrical connection port being fixedly connected to the top of the honeycomb plate, and batteries being embedded in the inner wall of the first slot above the honeycomb plate, and the electrical terminals being electrically connected to the batteries through wires.
[0007] In the aforementioned hot forging die, a honeycomb plate with embedded heating rods is provided on the back of the die, and multiple heating rods are individually controlled for heating. According to the complex shape of the hot forging and the different temperature requirements of different parts, the heating rods at the corresponding positions can be selectively turned on to heat the die.
[0008] As a further improvement of this application, the water collection tank is provided with symmetrical circular holes at both ends, and a threaded sleeve is embedded in the circular hole, with a lead screw rotatably connected inside the threaded sleeve.
[0009] As a further improvement of this application, the two ends of the water collection tank are rotatably connected to the sides of the mold, and the sides of the water collection tank are rotatably connected to the first shaft by clamps. The surfaces of the two second shafts and the first shaft are each fitted with a corresponding set of second belts, and each set of second belts is connected to the first belt.
[0010] As a further improvement of this application, gears are fitted on the surfaces of the lead screw and the second rotating shaft on the same side, and the two gears are meshed together.
[0011] As another improvement of this application, a clamping plate is fixedly connected to one end of the lead screw inside the water collection tank, and the clamping plate abuts against the mounting groove. A support plate is fixedly connected to the main body of the device, and a servo motor is fixedly connected to the support plate, with the output end of the servo motor connected to one of the lead screws.
[0012] As a further improvement to this application, a drain outlet is provided on the side end of the water collection tank, and a conveying pipe is internally threaded into the drain outlet, with the conveying pipe connected to a circulating water tank.
[0013] In summary, the mold is inserted into the second slot, aligning the mold with the screw holes on the second slot. The mold is then fixed in the second slot using the first screw. Next, the mold is placed in the first slot and engaged. The heating rod is then inserted into the corresponding inner hole, with its bottom contacting the heat-conducting block. The mold surface is also in contact with the heat-conducting block. The conductive cover is then attached to the top of the heating rod, and the power connector is engaged with the corresponding power terminal. The conductive cover, connected to the power terminal, indirectly connects to the battery for power supply, energizing the heating rod. The heating rod, through its contact with the heat-conducting block, heats the mold. During part processing, based on the complex shape of the hot forging and the varying temperature requirements of different parts, the controller can power the battery to the heating rod at the corresponding location, thereby heating the mold at the corresponding location and shaping the forging. Attached Figure Description
[0014] Figure 1 This is a front view of the hot forging equipment according to the first embodiment of this application;
[0015] Figure 2 This is a schematic diagram of the back of the hot forging equipment according to the first and second embodiments of this application;
[0016] Figure 3 This is a schematic diagram of the hot forging die installation according to the second embodiment of this application;
[0017] Figure 4 This is a schematic diagram of a hot forging die according to the first embodiment of this application;
[0018] Figure 5 This is a schematic diagram of the mold heating mechanism according to the first embodiment of this application;
[0019] Figure 6 This is a partial schematic diagram of the heating mechanism according to the first embodiment of this application;
[0020] Figure 7 This is a schematic diagram of the heating rod installation according to the first embodiment of this application.
[0021] Explanation of the labels in the diagram:
[0022] 1. Device body; 2. Water collection tank; 3. Support plate; 4. Servo motor; 5. Lead screw; 6. Gear; 7. Clamp; 8. First rotating shaft; 9. Clamping plate; 10. Conveying pipe; 11. Mounting groove; 12. Mold; 13. First belt; 14. Second belt; 15. First screw; 16. Second rotating shaft; 17. Honeycomb panel; 18. Heating rod; 19. Conductive cover; 20. Sealing plate; 21. First slot; 22. Screw hole; 23. Battery; 24. Second slot; 25. Threaded sleeve; 26. Heat-conducting block; 27. Power connection port; 28. Power connection terminal. Detailed Implementation
[0023] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0024] First implementation method:
[0025] Figures 1-2 and Figures 5-7 This invention discloses a hot forging die with an adjustable local heating structure, comprising a device body 1, a water collection tank 2 fixedly connected to the device body 1, a hydraulic cylinder fixedly connected to the top of the device body 1, a connecting rod connected to the movable end of the hydraulic cylinder, an installation groove 11 detachably connected to both the water collection tank 2 and the bottom end of the connecting rod, a second slot 24 formed at one end of the installation groove 11, a die 12 detachably connected to the second slot 24, a set of screw holes 22 symmetrically formed at both ends of the second slot 24 and both ends of the die 12, a first screw 15 threaded into the screw holes 22, a first slot 21 formed at the end of the installation groove 11 away from the die 12, a sealing plate 20 connected to the top of the first slot 21 by a screw, and the first slot... A honeycomb panel 17 is embedded in the device 21. Multiple inner holes are equally spaced on the honeycomb panel 17, and heating rods 18 are inserted into the inner holes. Multiple heat-conducting blocks 26 are installed in the first slot 21 below the inner holes. A conductive cover 19 is snapped onto the top of the heating rod 18. A power connection port 27 is opened at the bottom of the conductive cover 19. Multiple power terminals 28 corresponding to the power connection port 27 are fixedly connected to the top of the honeycomb panel 17. A battery 23 is embedded in the inner wall of the first slot 21 above the honeycomb panel 17, and the power terminals 28 are electrically connected to the battery 23 through wires. A controller for controlling the heating rods 18 and the servo motor 4 is fixedly connected to the device body 1, and each heating rod 18 is connected to the controller through an independent circuit.
[0026] Working principle: The mold 12 is inserted into the second slot 24, so that the mold 12 and the screw hole 22 on the second slot 24 correspond and overlap. The mold 12 is then fixed in the second slot 24 by the first screw 15. Then, 17 is placed in the first slot 21 and locked in place. The heating rod 18 is then inserted into the corresponding inner hole. At this time, the bottom end of the heating rod 18 is in contact with the heat-conducting block 26, and the surface of the mold 12 is in contact with the heat-conducting block 26. Finally, the conductive cover 19 is locked onto the top end of the heating rod 18, and the power connection port 27 is connected to the corresponding power connection terminal. When the 28 is snapped in place, the conductive cover 19 is connected to the power terminal 28, thereby indirectly connected to the battery 23 for power supply, which heats the heating rod 18. The heating rod 18 heats the mold 12 it contacts by contacting the heat-conducting block 26. When processing the part, the controller can control the battery 23 to supply power to the heating rod 18 at the corresponding position according to the complex shape of the hot forging and the different temperature requirements of different parts, thereby heating the mold 12 at the corresponding part and processing the forging blank into shape.
[0027] This utility model provides a honeycomb plate 17 with embedded heating rods 18 on the back of the mold 12. Each heating rod 18 is individually controlled for heating. According to the complex shape of the hot forging and the different temperature requirements of different parts, the heating rods 18 at the corresponding positions can be selectively turned on to heat the mold 12.
[0028] Second implementation method:
[0029] Figures 2-3 The water collection tank 2 has symmetrically opened round holes at both ends, with threaded sleeves 25 embedded in the round holes. A lead screw 5 is rotatably connected inside the threaded sleeve 25. The two ends of the water collection tank 2 are rotatably connected to the sides of the mold 12. The side ends of the water collection tank 2 are rotatably connected to the first lead screw 8 through clamps 7. A set of corresponding second belts 14 are fitted on the surfaces of the two second lead screws 16 and the first lead screw 8. Each set of second belts 14 is connected to the first belt 13. Gears 6 are fitted on the surfaces of the lead screw 5 and the second lead screw 16 on the same side, and the two gears 6 are meshed. A clamping plate 9 is fixedly connected to one end of the lead screw 5 inside the water collection tank 2, and the clamping plate 9 abuts against the mounting groove 11. A support plate 3 is fixedly connected to the device body 1. A servo motor 4 is fixedly connected to the support plate 3, and the output end of the servo motor 4 is connected to one of the lead screws 5. A drain outlet is opened on the side end of the water collection tank 2. A conveying pipe 10 is threadedly connected to the drain outlet, and the conveying pipe 10 is connected to a circulating water tank.
[0030] Working principle: The mounting slot 11 containing the mold 12 is placed in the water collection tank 2. Then, the servo motor 4 is turned on by the controller to drive one of the lead screws 5. The lead screw 5 and the second rotating shaft 16 are rotated synchronously through the two gears 6. The first rotating shaft 8 and the second rotating shaft 16 are rotated synchronously through the first belt 13 and the second belt 14. At this time, the clamping plates 9 at both ends move closer to each other synchronously, so that the clamping plates 9 clamp the two ends of the mounting slot 11 and the mounting slot 11 is positioned and installed. The wastewater used to rinse and cool the hot forgings during processing falls into the water collection tank 2 and is discharged through the conveying pipe 10.
[0031] This utility model can install and fix the mounting slots 11 of different sizes by setting an automatically adjusting clamp 9.
[0032] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.
Claims
1. A hot forging die with an adjustable local heating structure, comprising a device body (1), characterized in that: A water collection tank (2) is fixedly connected to the main body (1) of the device. A hydraulic cylinder is fixedly connected to the top of the main body (1). A connecting rod is connected to the movable end of the hydraulic cylinder. An installation groove (11) is detachably connected to both the water collection tank (2) and the bottom end of the connecting rod. A second slot (24) is provided at one end of the installation groove (11). A mold (12) is detachably connected to the second slot (24). A set of screw holes (22) is symmetrically provided at both ends of the second slot (24) and both ends of the mold (12). A first screw (15) is threaded into the screw hole (22). A first slot (21) is provided at the end of the installation groove (11) away from the mold (12). The top end of the first slot (21) is connected by a screw. There is a sealing plate (20), and a honeycomb plate (17) is embedded in the first slot (21). Multiple inner holes are equally spaced on the honeycomb plate (17), and heating rods (18) are inserted in the inner holes. Multiple heat-conducting blocks (26) are installed in the first slot (21) below the inner holes. A conductive cover (19) is snapped onto the top of the heating rod (18). A power connection port (27) is opened at the bottom of the conductive cover (19). Multiple power connection terminals (28) corresponding to the power connection port (27) are fixedly connected to the top of the honeycomb plate (17). A battery (23) is embedded in the inner wall of the first slot (21) above the honeycomb plate (17), and the power connection terminals (28) are electrically connected to the battery (23) through wires.
2. A hot forging die with an adjustable local heating structure according to claim 1, characterized in that: The water collection tank (2) has symmetrically opened round holes at both ends, and a threaded sleeve (25) is embedded in the round hole. A lead screw (5) is rotatably connected inside the threaded sleeve (25).
3. A hot forging die with an adjustable local heating structure according to claim 1, characterized in that: The two ends of the water collection tank (2) are rotatably connected to the second rotating shaft (16) at the side of the mold (12). The side end of the water collection tank (2) is rotatably connected to the first rotating shaft (8) through the clamp (7). The surfaces of the two second rotating shafts (16) and the first rotating shaft (8) are each fitted with a corresponding set of second belts (14). Each set of second belts (14) is connected to each other through the first belt (13).
4. A hot forging die with an adjustable local heating structure according to claim 2, characterized in that: The lead screw (5) and the second rotating shaft (16) on the same side are both fitted with gears (6), and the two gears (6) are meshed and connected.
5. A hot forging die with an adjustable local heating structure according to claim 2, characterized in that: The lead screw (5) is located inside the water collection tank (2) and one end is fixedly connected to a clamp (9), and the clamp (9) abuts against the mounting groove (11).
6. A hot forging die with an adjustable local heating structure according to claim 2, characterized in that: A tray (3) is fixedly connected to the main body (1) of the device, and a servo motor (4) is fixedly connected to the tray (3), and the output end of the servo motor (4) is connected to one of the lead screws (5).
7. A hot forging die with an adjustable local heating structure according to claim 1, characterized in that: The water collection tank (2) has a drain outlet on its side, and the drain outlet is internally threaded with a conveying pipe (10), and the conveying pipe (10) is externally connected to a circulating water tank.