A forging die assembly for automotive parts

Abstract

This invention relates to the field of metal pressure processing technology, and in particular to a forging die assembly for automotive parts, including a base plate, a lower die, and an upper die. A U-shaped frame is provided on the surface of the base plate, and an electric push rod is included as the sole driving element. The output end of the electric push rod is equipped with a moving mechanism, which includes a cylinder positioned above the U-shaped frame and a disc inside the cylinder. A second optical axis is fixedly connected to one side of the disc, and an industrial pneumatic spray gun is installed inside one end of the second optical axis. The first optical axis is fixedly connected inside the disc. This invention uses only one electric push rod as the sole power source, achieving spraying sequence control through a purely mechanical linkage structure, eliminating the need for electronic sensors. It has the advantages of simple structure, low manufacturing cost, high temperature resistance, anti-interference, and high reliability, and is suitable for the hot forging production of various automotive parts.

Description

Technical Field

[0001] This invention relates to the field of metal pressure processing technology, and in particular to a forging die assembly for automotive parts. Background Technology

[0002] Forging is a crucial process in automotive parts manufacturing, widely used in the production of key structural components such as connecting rods, ball joints, steering knuckles, and wheel hubs. In hot forging, the metal billet is typically heated and then plastically formed in the mold cavity under the action of a forging press. To prevent the high-temperature metal from sticking to the mold surface, ensure smooth demolding of the forging, reduce friction, protect the mold, and improve the surface quality of the forging, spraying a release agent (such as water-based graphite release agent) onto the mold cavity surface before each forging has become an indispensable part of the forging process. Currently, the spraying methods for forging release agents are mainly divided into manual hand-held spraying and automated spraying. Manual hand-held spraying is flexible in operation, but in the high-temperature, high-dust, and high-noise forging environment, it is difficult to guarantee the consistency of the spraying amount and spraying position, which directly affects the quality of forgings and the life of the mold. To address this, some forging companies have begun to adopt automated spraying devices, which fix the spray gun on one side of the forging machine and achieve automatic spraying through a control system. However, existing automated spraying devices usually use multiple cylinders or motors and multiple electronic sensors to control the forward and backward movement, lifting and lowering, and spraying start and stop of the spray gun. In the harsh working conditions of forging workshops with high temperatures (ambient temperature 50-80℃, mold surface temperature 300-750℃), high dust (graphite dust, oxide scale), strong vibration, and high electromagnetic interference, multiple drive components mean more potential failure points. Failure of any component may cause the entire spraying system to stop, seriously affecting the continuity of forging production. Summary of the Invention

[0003] To overcome the technical defects of the existing technology, the present invention provides an automotive parts forging die assembly. The technical solution adopted in this invention is: an automotive parts forging mold assembly, including a base plate, a lower mold, and an upper mold. The surface of the base plate is provided with a U-shaped frame, and it also includes an electric push rod as the sole driving element. The output end of the electric push rod is provided with a moving mechanism. The moving mechanism includes a cylinder set above the U-shaped frame and a disk I set inside the cylinder. One side of the disk I is fixedly connected to an optical axis II. One end of the optical axis II is provided with an industrial pneumatic spray gun. The optical axis I is fixedly connected inside the disk I. When the electric push rod extends and retracts according to a predetermined stroke, it causes the disk I to drive the industrial pneumatic spray gun to move laterally and then move in the opposite direction to reset. This is used to spray a release agent through the industrial pneumatic spray gun, and after completion, the industrial pneumatic spray gun is removed from the forging area to make room for the forging operation. The surface of the disc is provided with a control mechanism, which includes a square plate inserted inside the disc. When the disc moves laterally, the square plate slides inside the disc and pushes the handle switch of the industrial pneumatic spray gun to rotate for automatic spraying of release agent. The optical axis is equipped with a rotating mechanism, which includes a hexagonal rod inserted inside the optical axis. Below the hexagonal rod are two weights. When the disc moves laterally, the force applied by the weight is used to make the nozzle of the industrial pneumatic spray gun correspond to the spraying position of the lower mold. When the disc moves in the opposite direction, the force applied by the weight is used to make the nozzle of the industrial pneumatic spray gun correspond to the spraying position of the upper mold.

[0004] Preferably, a support plate is fixedly connected to the upper surface of the U-shaped frame, a cylinder is fixedly connected to the upper surface of the support plate, a central plate is fixedly connected to one side of the cylinder, a second disc is fixedly connected to the other end of the central plate, an electric push rod is installed on the side of the second disc near the cylinder, a connecting plate is fixedly connected to the output end of the electric push rod, an optical axis is inserted into the inside of the connecting plate, and the optical axis is rotatably connected to the connecting plate through a bearing.

[0005] Preferably, the industrial pneumatic spray gun is fixedly connected to the mounting groove opened at one end of the optical axis, and a connecting pipe is provided at the interface of the industrial pneumatic spray gun. The connecting pipe has two independent pipes that are respectively connected to the air inlet and liquid inlet of the industrial pneumatic spray gun.

[0006] Preferably, the axis of the second optical axis is parallel to and offset from the axis of the first disk, forming an eccentric mounting structure.

[0007] Preferably, the base plate is fixedly connected to both sides with slide bars, which are inserted into auxiliary slide grooves opened inside the U-shaped frame, and the slide bars and the U-shaped frame are slidably connected.

[0008] Preferably, a spring and a square plate are disposed in the square groove opened on the circumference of the first disc. The two ends of the spring are fixedly connected to the square plate and the first disc, respectively. The square plate is slidably connected to the first disc. A semi-circular plate is fixedly connected to the end of the square plate away from the spring. An arc-shaped groove 1 and an arc-shaped groove 2 are opened inside the cylinder. The arc-shaped groove 1 and the arc-shaped groove 2 are parallel and close to the two ends of the cylinder, respectively. A lower horizontal groove is opened inside the cylinder. The bottom ends of the arc-shaped groove 2 and the arc-shaped groove 1 are connected to the lower horizontal groove. The semi-circular plate is located inside the arc-shaped groove 1. When the first disc moves laterally, it can drive the semi-circular plate to slide into the lower horizontal groove.

[0009] Preferably, a U-shaped rod is fixedly connected to one side of the square plate. The U-shaped rod is located in a side groove opened on one side of the disc. An inner sliding rod is inserted into an inner sliding groove opened inside the optical axis. One end of the inner sliding rod extends into the interior of the mounting groove. A U-shaped rod is fixedly connected to the surface of the inner sliding rod. One end of the U-shaped rod extends into the exterior of the optical axis. An inclined rod is provided between the U-shaped rod and the U-shaped rod. The two ends of the inclined rod are rotatably connected to the U-shaped rod and the U-shaped rod respectively through a pivot pin. A support plate is fixedly connected to the end of the inner sliding rod located inside the mounting groove. A straight trapezoidal plate is fixedly connected to the upper surface of the support plate. The side of the straight trapezoidal plate away from the inner sliding rod is inclined. When the straight trapezoidal plate moves laterally, its inclined surface contacts the end of the handle switch of the industrial pneumatic spray gun and pushes the handle switch of the industrial pneumatic spray gun to rotate for automatic spraying of the release agent.

[0010] Preferably, a hexagonal rod is inserted into a hexagonal slot inside the optical axis one. The hexagonal rod is slidably connected to the optical axis one. The hexagonal rod is rotatably connected to the inside of the disc two via a bearing two. A synchronous pulley is fixedly fitted onto the surface of the hexagonal rod. A synchronous belt is provided on the surface of the synchronous pulley. A first weight and a second weight are fixedly connected to both ends of the synchronous belt, respectively. The weight of the first weight is greater than the weight of the second weight. A bottom rod is fixedly connected to the bottom of the first weight. A fixed connection is made between the disc two and the cylinder. A positioning slide rod is provided below the positioning slide rod, and a vertical rod one and a vertical rod two are fixedly connected to the upper surface of the upper horizontal plate. The positioning slide rod passes through the vertical rod one and the vertical rod two laterally, and the vertical rod one and the vertical rod two are slidably connected to the positioning slide rod. An L-shaped rod is fixedly connected to the bottom surface of the connecting plate, and one end of the L-shaped rod is located between the vertical rod one and the vertical rod two. A beveled surface is opened on one side of the upper horizontal plate, and a lower horizontal plate is fixedly connected to the bottom surface of one end of the upper horizontal plate. The bottom rod is in contact with the surface of the upper horizontal plate.

[0011] Preferably, the cylinder has an upper horizontal groove inside, and the upper and lower horizontal grooves are symmetrically arranged inside the cylinder. The top ends of the second and first arc-shaped grooves are connected to the upper horizontal groove.

[0012] Preferably, two T-shaped blocks are inserted into two T-shaped slots on one side of the second disc, and the two T-shaped blocks are fixedly connected to the second weight and the first weight, respectively. A stop bar is fixedly connected to one side of the second disc, and the stop bar is in contact with the surface of the synchronous pulley to block the synchronous belt. The hexagonal rod has a through hole for accommodating the connecting pipe.

[0013] The beneficial effects of this invention are: by using an electric push rod as the only driving element, the industrial pneumatic spray gun can be driven to complete the complete spatial action sequence of lateral feeding, lower mold spraying, automatic reversing, upper mold spraying, and lateral withdrawal. Compared with the existing technology that requires multiple cylinders or motors, this invention greatly simplifies the power system and control logic, and significantly reduces manufacturing costs, energy consumption and failure rate. The spraying sequence is controlled by a purely mechanical linkage structure consisting of a disc, a square plate, a semi-circular plate, and an arc-shaped groove, an arc-shaped groove, a lower horizontal groove, and an upper horizontal groove inside the cylinder. This completely avoids the use of electronic sensors in the forging environment with high temperature, high humidity, and high electromagnetic interference. This design fundamentally eliminates the risk of sensor failure due to heat radiation, oxide scale dust, or water vapor interference, and significantly improves the mean time between failures (MTBF) of the equipment under harsh working conditions. By utilizing the gravity difference between weight one and weight two, as well as the sliding fit between the semi-circular plate and the arc groove one and arc groove two, the automatic 180° reversal of the industrial pneumatic spray gun at the end of horizontal movement is realized. This mechanism does not require additional motor or solenoid valve drive, and relies on mechanical gravity and trajectory groove constraints. It has significant advantages such as rapid response, accurate positioning, high temperature resistance and no electromagnetic interference. By using the eccentric mounting structure of the optical axis two and the disk one, and with the 180° rotation of the disk one, the industrial pneumatic spray gun automatically lowers its height to get closer to the lower mold when spraying the lower mold, and automatically raises its height to get closer to the upper mold when spraying the upper mold. This design ensures that the spray gun can maintain the optimal spraying distance and coverage when spraying different molds, effectively avoiding the problems of mold release agent waste or uneven spraying, and significantly improving the spraying quality. This invention uses a square plate to drive the linkage of U-shaped rod one, inclined rod, U-shaped rod two and inner sliding rod, so that the inclined surface of the straight trapezoidal plate contacts the end of the handle switch of the industrial pneumatic spray gun, realizing the automatic start and stop of spraying. This mechanical triggering method is precisely coupled with the stroke of the electric push rod, so that the spraying action is triggered when the industrial pneumatic spray gun moves to the corresponding position of the mold, avoiding the problem of electrical control delay or false triggering. A stop bar is fixedly connected to one side of the second disc. The stop bar is in contact with the surface of the synchronous pulley and is used to block the synchronous belt. This design can maintain the engagement between the synchronous belt and the synchronous pulley even when the synchronous belt is in a slack state, preventing the synchronous belt from falling off the surface of the synchronous pulley and ensuring the transmission reliability of the rotating mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the central plate and the cylinder in this invention; Figure 3 For the present invention Figure 2 Sectional view at point AA; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the structure of the disk and the cylinder in this invention; Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle; Figure 8 This is a schematic diagram of the structure of the stop bar and the second disc in this invention; Figure 9 This is a schematic diagram of the structure of the cylinder and the arc-shaped groove II in this invention; Figure 10 This is a schematic diagram of the structure of the L-shaped rod and the connecting plate in this invention; Figure 11 This is a schematic diagram of the optical axis II and the industrial pneumatic spray gun in this invention; Figure 12 This is a schematic diagram of the semi-circular plate and square plate in this invention.

[0015] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Lower mold; 3. Upper mold; 4. U-shaped frame; 5. Electric push rod; 6. Moving mechanism; 61. Support plate; 62. Cylinder; 63. Disc 1; 64. Optical axis 1; 65. Connecting plate; 66. Optical axis 2; 67. Industrial pneumatic spray gun; 68. Connecting pipe; 69. Disc 2; 610. Center plate; 611. Sliding bar; 612. Auxiliary slide; 613. Mounting groove; 7. Control mechanism; 71. Straight trapezoidal plate; 72. Support plate; 73. Square groove; 74. Spring; 75. Square plate; 76. Arc-shaped groove 1; 77. Arc-shaped groove 2; 78. 79. Lower transverse groove; 710. Side groove; 711. U-shaped rod one; 712. Diagonal rod; 713. U-shaped rod two; 714. Inner sliding groove; 715. Inner sliding rod; 716. Semicircular plate; 8. Rotating mechanism; 81. Upper transverse groove; 82. Hexagonal rod; 83. Synchronous pulley; 84. Synchronous belt; 85. Weight one; 86. Weight two; 87. Bottom rod; 88. Lower transverse plate; 89. Upper transverse plate; 810. Hexagonal groove; 811. Beveled surface; 812. Longitudinal rod one; 813. Longitudinal rod two; 814. Positioning sliding rod; 815. L-shaped rod; 816. T-shaped groove; 817. T-shaped block; 818. Stop rod. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings: like Figures 1 to 12As shown, this embodiment provides an automotive parts forging die assembly, including a base plate 1, a lower die 2, and an upper die 3. A U-shaped frame 4 is provided on the surface of the base plate 1. It also includes an electric push rod 5 as the sole driving element. The output end of the electric push rod 5 is provided with a moving mechanism 6. The moving mechanism 6 includes a support plate 61, a cylinder 62, a first disc 63, a first optical axis 64, a connecting plate 65, a second optical axis 66, an industrial pneumatic spray gun 67, a connecting pipe 68, a second disc 69, a central plate 610, and a slide bar 611. Above the U-shaped frame 4... A cylindrical section 62 is provided, inside which is a disc 63. A second optical axis 66 is fixedly connected to one side of the disc 63. An industrial pneumatic spray gun 67 is installed inside one end of the optical axis 66. A first optical axis 64 is fixedly connected inside the disc 63. When the electric push rod 5 extends and retracts according to a predetermined stroke, it causes the disc 63 to move the industrial pneumatic spray gun 67 laterally and then move it back to its original position. This is used to spray a release agent through the industrial pneumatic spray gun 67, and after completion, the industrial pneumatic spray gun 67 is withdrawn from the forging area, facilitating the forging operation. To create space, a support plate 61 is fixedly connected to the upper surface of the U-shaped frame 4. A cylinder 62 is fixedly connected to the upper surface of the support plate 61. A central plate 610 is fixedly connected to one side of the cylinder 62, and a disc 69 is fixedly connected to the other end of the central plate 610. An electric push rod 5 is installed on the side of the disc 69 near the cylinder 62. A connecting plate 65 is fixedly connected to the output end of the electric push rod 5. An optical axis 64 is inserted inside the connecting plate 65 and is rotatably connected to the connecting plate 65 via a bearing. An industrial pneumatic spray gun 67 is fixedly mounted. The optical axis 66 is fixedly connected to the mounting groove 613 opened at one end of the optical axis 66. The interface of the industrial pneumatic spray gun 67 is provided with a connecting pipe 68. The connecting pipe 68 has two independent pipes that are respectively connected to the air inlet and liquid inlet of the industrial pneumatic spray gun 67. The axis of the optical axis 66 is parallel to the axis of the disk 63 and offset from each other, forming an eccentric mounting structure. Sliding strips 611 are fixedly connected to both sides of the base plate 1. The sliding strips 611 are inserted into the auxiliary sliding grooves 612 opened inside the U-shaped frame 4. The sliding strips 611 and the U-shaped frame 4 are slidably connected.

[0017] The surface of disc 63 is provided with a control mechanism 7, which includes a trapezoidal plate 71, a support plate 72, a spring 74, a square plate 75, a U-shaped rod 710, a diagonal rod 711, a U-shaped rod 712, an inner sliding rod 714, and a semi-circular plate 715. The square plate 75 is inserted inside the disc 63. When the disc 63 moves laterally, the square plate 75 slides inside the disc 63, pushing the handle switch of the industrial pneumatic spray gun 67 to rotate for automatic spraying of the release agent. A spring 74 and a square plate 75 are installed in a square groove 73 on the circumferential surface of the disc 63. The two ends of the spring 74 are fixedly connected to the square plate 75 and the disc 63, respectively. The square plate 75 is slidably connected to the disc 63. A semicircular plate 715 is fixedly connected to the end of the square plate 75 away from the spring 74. The inside of the cylinder 62 is provided with an arc-shaped groove 76 and an arc-shaped groove 77, which are parallel and close to both ends of the cylinder 62. The inside of the cylinder 62 is provided with a lower transverse groove 78. The bottom ends of the arc-shaped groove 77 and the arc-shaped groove 76 are connected to the lower transverse groove 78. The semicircular plate 715 is located inside the arc-shaped groove 76. When the disc 63 moves laterally, it can drive the semi-circular plate 715 to slide into the lower horizontal groove 78. A U-shaped rod 710 is fixedly connected to one side of the square plate 75. The U-shaped rod 710 is located in the side groove 79 opened on one side of the disc 63. An inner sliding rod 714 is inserted into the inner sliding groove 713 opened inside the optical axis 66. One end of the inner sliding rod 714 extends into the interior of the mounting groove 613. A U-shaped rod 712 is fixedly connected to the surface of the inner sliding rod 714. One end of the U-shaped rod 712 extends to the outside of the optical axis 66. The U-shaped rod 712 and the U-shaped rod A diagonal rod 711 is provided between the first and second U-shaped rods 710 and 712 respectively via pins. A support plate 72 is fixedly connected to one end of the inner slide rod 714 inside the mounting groove 613. A straight trapezoidal plate 71 is fixedly connected to the upper surface of the support plate 72. The side of the straight trapezoidal plate 71 away from the inner slide rod 714 is inclined. When the straight trapezoidal plate 71 moves laterally, its inclined surface contacts the end of the handle switch of the industrial pneumatic spray gun 67 and pushes the handle switch of the industrial pneumatic spray gun 67 to rotate for automatic spraying of release agent.

[0018] The optical axis 64 is internally equipped with a rotating mechanism 8, which includes a hexagonal rod 82, a synchronous pulley 83, a synchronous belt 84, a first weight 85, a second weight 86, a base rod 87, a lower horizontal plate 88, an upper horizontal plate 89, a chamfered surface 811, a first longitudinal rod 812, a second longitudinal rod 813, a positioning slide rod 814, an L-shaped rod 815, a T-shaped block 817, and a stop rod 818. The hexagonal rod 82 is inserted inside the optical axis 64. Below the hexagonal rod 82 are the first weight 85 and the second weight 86. When the disc 63 moves laterally, the force applied by the second weight 86 causes the nozzle of the industrial pneumatic spray gun 67 to align with the spraying position of the lower mold 2. When the 63 moves in the reverse direction, the force applied by the first weight 85 causes the nozzle of the industrial pneumatic spray gun 67 to align with the spraying position of the mold 3. A hexagonal rod 82 is inserted into the hexagonal groove 810 inside the optical shaft 64. The hexagonal rod 82 is slidably connected to the optical shaft 64. The hexagonal rod 82 is rotatably connected to the inside of the disc 69 via the second bearing. A synchronous pulley 83 is fixedly fitted on the surface of the hexagonal rod 82. A synchronous belt 84 is provided on the surface of the synchronous pulley 83. The two ends of the synchronous belt 84 are fixedly connected to the first weight 85 and the second weight 86, respectively. The weight of the first weight 85 is greater than the weight of the second weight 86. A bottom rod 8 is fixedly connected to the bottom of the first weight 85. 7. A positioning slide rod 814 is fixedly connected between the disc 69 and the cylinder 62. An upper horizontal plate 89 is provided below the positioning slide rod 814. A first longitudinal rod 812 and a second longitudinal rod 813 are fixedly connected to the upper surface of the upper horizontal plate 89. The positioning slide rod 814 passes through the first longitudinal rod 812 and the second longitudinal rod 813 laterally. The first longitudinal rod 812 and the second longitudinal rod 813 are slidably connected to the positioning slide rod 814. An L-shaped rod 815 is fixedly connected to the bottom surface of the connecting plate 65. One end of the L-shaped rod 815 is located between the first longitudinal rod 812 and the second longitudinal rod 813. A beveled surface 811 is provided on one side of the upper horizontal plate 89. A lower horizontal plate 88 is fixedly connected to the bottom surface of one end of the upper horizontal plate 89. The bottom rod 87 is in contact with the surface of the upper horizontal plate 89. The cylinder 62 has an upper horizontal groove 81 inside. The upper horizontal groove 81 and the lower horizontal groove 78 are symmetrically arranged inside the cylinder 62. The tops of the arc-shaped groove 77 and the arc-shaped groove 76 are connected to the upper horizontal groove 81. T-shaped blocks 817 are inserted into the two T-shaped grooves 816 on one side of the disc 69. The two T-shaped blocks 817 are fixedly connected to the weight 86 and the weight 85 respectively. A stop bar 818 is fixedly connected to one side of the disc 69. The stop bar 818 is in contact with the surface of the synchronous pulley 83 and is used to block the synchronous belt 84. The hexagonal rod 82 has a through hole inside for accommodating the connecting pipe 68.

[0019] Working Principle: The industrial pneumatic spray gun 67 has an air inlet and a liquid inlet. An external air compressor is connected to the air inlet of the industrial pneumatic spray gun 67 through an air supply line to provide compressed air. An external mold release agent storage tank is connected to the liquid inlet of the industrial pneumatic spray gun 67 through a liquid supply line to deliver mold release agent to the spray gun. Pressing the handle switch allows the compressed air and mold release agent to mix and atomize inside the industrial pneumatic spray gun 67 before being sprayed out. The industrial pneumatic spray gun 67 can be equipped with a high-temperature resistant model, such as a PPS material spray gun, which can withstand temperatures up to 220℃, or it can adopt a thermal isolation design, making it perfectly suitable for use in forging environments. The industrial pneumatic spray gun 67 has a handle switch. When in use, rotating the handle switch moves the switch lever of the industrial pneumatic spray gun 67, simultaneously opening the air valve and the liquid valve. The compressed air and mold release agent mix and atomize at the nozzle and are sprayed out. After the handle switch is released or rotated back, the spring returns to its original position and closes the valve, and the industrial pneumatic spray gun 67 stops spraying. When forging, the heated metal billet is placed in the cavity of the lower die 2. The power mechanism uses hydraulic or mechanical crank connecting rod to drive the slider to move the upper die 3 downward quickly, closing with the fixed lower die 2. High pressure is applied to the billet, causing it to plastically deform in the die cavity to form the desired forging shape. After forming, the power mechanism drives the upper die 3 to rise and reset. The equipment's own ejector mechanism ejects the forging from the lower die 2, completing a single forging cycle, and then enters the next working cycle. Before a single forging operation, spraying a release agent is an indispensable part of the forging process. Its core value lies in three aspects: "lubrication and release", "protection of the mold", and "quality improvement". After the release agent is sprayed, it forms a dense film on the surface of the mold. This film can effectively isolate the high-temperature metal from direct contact with the mold, preventing the metal from welding or sticking in the mold cavity, thus ensuring that the forging can be smoothly removed. In addition, this film also has excellent lubricity, which can significantly reduce the friction between the metal billet and the mold. This makes it easier and more even for the metal material to fill the entire mold cavity, ensuring the accuracy and quality of the forging. When spraying the release agent, the U-shaped frame 4 is pushed so that the cylinder 62 is close to the space between the upper mold 3 and the lower mold 2. At this time, the nozzle of the industrial pneumatic spray gun 67 is facing downwards. The electric push rod 5 is activated by external control. The operation of the electric push rod 5 causes the output end of the connecting plate 65 to move. The movement of the connecting plate 65 causes the optical axis 64 to slide on the surface of the hexagonal rod 82. The movement of the optical axis 64 causes the disc 63 to move laterally inside the cylinder 62. When the disc 63 moves, it causes the square plate 75 to move synchronously. When the bottom rod 87 is in contact with the upper surface of the upper horizontal plate 89, the synchronous belt 84 is in a taut state under the gravity of the second weight 86. At this time, the semi-circular plate 715 is opposite to the lower horizontal groove 78. The part of the semi-circular plate 715 away from the square plate 75 is arc-shaped, so that the semi-circular plate 715 can be easily slid out from the arc-shaped groove 76 and then slide into the lower horizontal groove 78. During this process, the square plate 75 is pushed to slide into the square groove 73. The movement of the square plate 75 compresses the spring 74. When the square plate 75 slides into the square groove 73, it drives the U-shaped rod 710 to move synchronously. Then, the inclined rod 711 pushes the U-shaped rod 712 to move laterally. The movement of the U-shaped rod 712 drives the inner slide rod 714 to move synchronously. The movement of the inner slide rod 714 drives the support plate 72 and the straight trapezoidal plate 71 to move synchronously. Since the side of the straight trapezoidal plate 71 away from the inner slide rod 714 is inclined, when the straight trapezoidal plate 71 moves laterally, its inclined surface contacts the end of the handle switch of the industrial pneumatic spray gun 67 and pushes the handle switch of the industrial pneumatic spray gun 67 to rotate for automatic spraying of the release agent. At this time, the nozzle of the industrial pneumatic spray gun 67 is spraying the spraying position of the lower mold 2. Due to the continuous extension of the output end of the electric push rod 5, the disc 63 can drive the optical axis 66 and the industrial pneumatic spray gun 67 to move synchronously, thereby achieving the effect of spraying the spraying position of the lower mold 2. As the output end of the electric push rod 5 extends continuously, driving the connecting plate 65 to move, the movement of the connecting plate 65 causes the L-shaped rod 815 to move synchronously. The bottom end of the L-shaped rod 815 is located between the first longitudinal rod 812 and the second longitudinal rod 813. When the semicircular plate 715 is about to move to the position of the second arc-shaped groove 77, the bottom end of the L-shaped rod 815 contacts the second longitudinal rod 813. As the connecting plate 65 continues to move, the first weight 85 pulls the second longitudinal rod 813 to slide on the surface of the positioning slide rod 814. The movement of the upper horizontal plate 89 causes the upper horizontal plate 89 to move synchronously. During the movement of the upper horizontal plate 89, the arc surface of the bottom end of the bottom rod 87 can be made to fit with the inclined surface 811. As the upper horizontal plate 89 continues to move, the bottom rod 87 slides along the inclined surface of the inclined surface 811 until the bottom rod 87 moves to fit with the lower horizontal plate 88. At this time, the semi-circular plate 715 just moves into the interior of the arc-shaped groove 77, that is, the output end of the electric push rod 5 extends to its limit position. Since the bottom rod 87 is in contact with the lower horizontal plate 88, it can pass through... The synchronous belt 84 pulls the second weight 86 upward. The weight of the first weight 85 is greater than the weight of the second weight 86. However, because the semicircular plate 715 is still sliding inside the lower transverse groove 78, the disk 63 has rotational potential energy but cannot rotate due to the obstruction of the lower transverse groove 78. When the semicircular plate 715 moves to the position of the second arc-shaped groove 77, the elastic potential energy of the spring 74 causes the semicircular plate 715 to slide into the second arc-shaped groove 77. Due to the depth of the first arc-shaped groove 76 and the second arc-shaped groove 77, When the semicircular plate 715 slides into the interior of the arc-shaped groove 77, which is greater than the depth of the lower horizontal groove 78, the square plate 75 moves towards the outside of the disc 63. The movement of the square plate 75 pulls the inner slide rod 714 towards the disc 63 through the inclined rod 711. The movement of the inner slide rod 714 drives the straight trapezoidal plate 71 and the support plate 72 to move synchronously. When the end of the handle switch of the industrial pneumatic spray gun 67 slides out from the inclined surface of the straight trapezoidal plate 71, the handle switch of the industrial pneumatic spray gun 67 rotates to reset and pauses the spraying of the release agent. Meanwhile, as the semicircular plate 715 slides out from the lower transverse groove 78 and into the arc-shaped groove 77, the disc 63 gains rotational potential energy due to the gravity of the weight block 85. This causes the semicircular plate 715 to slide within the arc-shaped groove 77 and into the area near the upper transverse groove 81. At this point, the disc 63 rotates 180 degrees, and the nozzle of the industrial pneumatic spray gun 67 faces the upper mold 3. Because the axis of the optical axis 66 is parallel to and offset from the axis of the disc 63, an eccentric mounting structure is formed. When the nozzle of the industrial pneumatic spray gun 67 faces the lower mold 2, the optical axis 66 is located below the axis of the disc 63, allowing the industrial pneumatic spray gun to... The gun 67 is close to the spraying position of the lower mold 2. When the disc 63 rotates 180 degrees, the optical axis 66 is located above the axis of the disc 63, which makes the industrial pneumatic spray gun 67 close to the spraying position of the upper mold 3, thereby ensuring the effect of the release agent spraying. Through the eccentric installation design of the optical axis 66 and the disc 63, combined with the 180-degree rotation of the disc 63, the industrial pneumatic spray gun 67 automatically lowers its height to be close to the lower mold when spraying the lower mold 2, and automatically raises its height to be close to the upper mold when spraying the upper mold 3. This design ensures that the spray gun can maintain the optimal spraying distance and coverage when spraying different molds, avoiding the problems of release agent waste or uneven spraying. At this point, the electric push rod 5 is activated again. The output end of the electric push rod 5 retracts, causing the connecting plate 65 and the optical axis 64 to move in the opposite direction. The movement of the optical axis 64 pulls the disc 63 to move in the opposite direction. When the disc 63 moves in the opposite direction, the semicircular plate 715 can slide into the interior of the upper horizontal groove 81. The depths of the arc-shaped groove 76 and the arc-shaped groove 77 are greater than the depth of the upper horizontal groove 81. When the semicircular plate 715 slides into the interior of the upper horizontal groove 81, the square plate 75 can also slide towards the interior of the square groove 73 to compress the spring 74. The movement of the square plate 75 drives the inner slide rod 714 to move away from the disc 63 through the inclined rod 711. The movement of the inner slide rod 714 drives the support plate 72 and the straight trapezoidal plate 71 to move synchronously. When the straight trapezoidal plate 71 moves laterally, its inclined surface opens with the handle of the industrial pneumatic spray gun 67. When the end contacts the switch, it pushes the handle switch of the industrial pneumatic spray gun 67 to rotate and automatically spray the release agent. At this time, the nozzle of the industrial pneumatic spray gun 67 is facing the spraying position of the upper mold 3. The continuous retraction of the output end of the electric push rod 5 enables the disc 63 to drive the optical axis 66 and the industrial pneumatic spray gun 67 to move synchronously, thereby achieving the spraying of the release agent on the spraying position of the upper mold 3. By utilizing the gravity difference between the first weight 85 and the second weight 86, as well as the sliding cooperation between the semi-circular plate 715 and the arc groove 76 and the arc groove 77, the industrial pneumatic spray gun 67 can automatically change direction 180 degrees at the end of the horizontal movement. This mechanism does not require an additional motor or solenoid valve drive, and relies entirely on mechanical gravity and trajectory groove constraints. It has significant advantages such as rapid response, accurate positioning, high temperature resistance and no electromagnetic interference. When the semicircular plate 715 is about to move to the position of the arc-shaped groove 76, the bottom end of the L-shaped rod 815 contacts the longitudinal rod 812, causing the longitudinal rod 812 to slide on the surface of the positioning slide rod 814. The longitudinal rod 812 drives the upper horizontal plate 89 to move synchronously. During the movement of the upper horizontal plate 89, the bottom rod 87 moves from the surface of the lower horizontal plate 88 to the inclined surface 811 at one end of the upper horizontal plate 89, and under the guidance of the inclined surface 811, the bottom rod 87 moves to the upper horizontal plate 89. On the upper surface, under the pull of the weight 86, the synchronous belt 84 is pulled. At this time, the semi-circular plate 715 is located inside the upper transverse groove 81. Under the obstruction of the upper transverse groove 81, the hexagonal rod 82 has rotational potential energy but cannot rotate. At this time, although the synchronous belt 84 on the top of the weight 85 is in a slack state, under the obstruction of the stop rod 818, the synchronous belt 84 is made to adhere to the surface of the synchronous pulley 83. Furthermore, under the action of the teeth of the synchronous pulley 83 and the synchronous belt 84, the synchronous belt 84 will not be able to move. Synchronous pulleys 83 slide relative to each other. When the semicircular plate 715 slides from the inside of the upper transverse groove 81 into the inside of the arc-shaped groove 76, the elastic potential energy of the spring 74 causes the square plate 75 to move outward. This allows the handle switch end of the industrial pneumatic spray gun 67 to slide out from the inclined surface of the straight trapezoidal plate 71. At this time, the handle switch of the industrial pneumatic spray gun 67 rotates to reset and pauses the spraying of the release agent. Under the action of the rotational potential energy of the hexagonal rod 82, the disc 63 can drive the semicircular plate 715 in the arc-shaped groove 76. The groove 76 rotates inside until it is close to the lower horizontal groove 78. At this time, the process of spraying release agent on the spraying position of the lower mold 2 and the upper mold 3 is completed. At this time, the industrial pneumatic spray gun 67 moves out of the space between the lower mold 2 and the upper mold 3 and exits the forging area to make room for forging operations. Before each forging, the spraying of release agent is automatically completed by controlling the operation of the electric push rod 5, which effectively reduces the friction between the forging and the mold cavity, reduces the demolding resistance, and extends the mold life. Pulling the U-shaped frame 4 allows it to slide on the surface of the base plate 1, thus moving the industrial pneumatic spray gun 67 away from the lower mold 2 and the upper mold 3, increasing the distance between the industrial pneumatic spray gun 67 and the forging machine, and preventing high temperatures from damaging the components of the sprayed structure during the forging process. This design uses only one electric push rod 5 as the sole power source to drive the industrial pneumatic spray gun 67 to sequentially complete the complex spatial action sequence of "lateral feeding, lower mold spraying, upward reversal, upper mold spraying, and lateral withdrawal". Compared with the existing technology that requires multiple cylinders or motors, this invention greatly simplifies the power system and control logic, significantly reduces manufacturing costs and failure rates. By achieving spraying sequence control through a purely mechanical linkage structure, it completely avoids the use of electronic sensors (such as limit switches and proximity switches) in the forging environment with high temperature, high humidity, and high electromagnetic interference. This fundamentally eliminates the risk of sensor failure due to heat radiation, oxide scale dust, or water vapor interference, and significantly improves the mean time between failures (MTBF) of the equipment under harsh working conditions.

[0020] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An automotive parts forging die assembly, comprising a base plate (1), a lower die (2) and an upper die (3), wherein a U-shaped frame (4) is provided on the surface of the base plate (1); Its features are: It also includes an electric push rod (5) as the sole driving element. The output end of the electric push rod (5) is provided with a moving mechanism (6). The moving mechanism (6) includes a cylinder (62) set above the U-shaped frame (4) and a disc (63) set inside the cylinder (62). A second optical axis (66) is fixedly connected to one side of the disc (63). An industrial pneumatic spray gun (67) is set inside one end of the optical axis (66). A first optical axis (64) is fixedly connected inside the disc (63). When the electric push rod (5) extends and retracts according to a predetermined stroke, the disc (63) drives the industrial pneumatic spray gun (67) to move laterally and then move in the opposite direction to reset. This is used to spray the release agent through the industrial pneumatic spray gun (67) and, after completion, to make the industrial pneumatic spray gun (67) exit the forging area to make room for the forging operation. The surface of the disk (63) is provided with a control mechanism (7), the control mechanism (7) includes a square plate (75) inserted inside the disk (63). When the disk (63) moves laterally, the square plate (75) slides inside the disk (63) to push the handle switch of the industrial pneumatic spray gun (67) to rotate for automatic spraying of release agent. The optical axis (64) is provided with a rotating mechanism (8). The rotating mechanism (8) includes a hexagonal rod (82) inserted inside the optical axis (64). Below the hexagonal rod (82) are a weight (85) and a weight (86). When the disc (63) moves laterally, the force applied by the weight (86) makes the nozzle of the industrial pneumatic spray gun (67) correspond to the spraying position of the lower mold (2). When the disc (63) moves in the opposite direction, the force applied by the weight (85) makes the nozzle of the industrial pneumatic spray gun (67) correspond to the spraying position of the upper mold (3). The axis of the second optical axis (66) is parallel to and offset from the axis of the first disk (63), forming an eccentric mounting structure; A spring (74) and a square plate (75) are provided in the square groove (73) on the circumference of the first disc (63). The two ends of the spring (74) are fixedly connected to the square plate (75) and the first disc (63) respectively. The square plate (75) is slidably connected to the first disc (63). A semi-circular plate (715) is fixedly connected to the end of the square plate (75) away from the spring (74). The inside of the cylinder (62) is provided with an arc-shaped groove one (76) and an arc-shaped groove two (77). The first arc-shaped groove (76) and the second arc-shaped groove (77) are parallel and close to both ends of the cylinder (62). The cylinder (62) has a lower horizontal groove (78) inside. The bottom ends of the second arc-shaped groove (77) and the first arc-shaped groove (76) are connected to the lower horizontal groove (78). The semi-circular plate (715) is located inside the first arc-shaped groove (76). When the first disc (63) moves laterally, it can drive the semi-circular plate (715) to slide into the lower horizontal groove (78). A U-shaped rod (710) is fixedly connected to one side of the square plate (75). The U-shaped rod (710) is located in the side groove (79) opened on one side of the disc (63). An inner sliding rod (714) is inserted into the inner sliding groove (713) opened inside the optical axis (66). One end of the inner sliding rod (714) extends into the interior of the mounting groove (613). A U-shaped rod (712) is fixedly connected to the surface of the inner sliding rod (714). One end of the U-shaped rod (712) extends into the exterior of the optical axis (66). An inclined rod is provided between the U-shaped rod (712) and the U-shaped rod (710). 711), the two ends of the inclined rod (711) are rotatably connected to U-shaped rod one (710) and U-shaped rod two (712) respectively by shaft pins. The inner slide rod (714) is fixedly connected to a support plate (72) at one end inside the mounting groove (613). A straight trapezoidal plate (71) is fixedly connected to the upper surface of the support plate (72). The side of the straight trapezoidal plate (71) away from the inner slide rod (714) is inclined. When the straight trapezoidal plate (71) moves laterally, its inclined surface contacts the end of the handle switch of the industrial pneumatic spray gun (67) and pushes the handle switch of the industrial pneumatic spray gun (67) to rotate for automatic spraying of release agent. The output end of the electric push rod (5) is fixedly connected to a connecting plate (65). A hexagonal rod (82) is inserted into a hexagonal slot (810) inside the optical axis (64). The hexagonal rod (82) is slidably connected to the optical axis (64). The hexagonal rod (82) is rotatably connected to the inside of the disc (69) through a bearing. A synchronous wheel (83) is fixedly fitted on the surface of the hexagonal rod (82). A synchronous belt (84) is provided on the surface of the synchronous wheel (83). A weight block (85) and a weight block (86) are fixedly connected to both ends of the synchronous belt (84). The weight of the weight block (85) is greater than the weight of the weight block (86). A bottom rod (87) is fixedly connected to the bottom of the weight block (85). A positioning device is fixedly connected between the disc (69) and the cylinder (62). A sliding rod (814) is provided below the positioning sliding rod (814), and an upper horizontal plate (89) is provided below the positioning sliding rod (814). The upper surface of the upper horizontal plate (89) is fixedly connected to a first vertical rod (812) and a second vertical rod (813). The positioning sliding rod (814) passes through the first vertical rod (812) and the second vertical rod (813) laterally. The first vertical rod (812) and the second vertical rod (813) are slidably connected to the positioning sliding rod (814). An L-shaped rod (815) is fixedly connected to the bottom surface of the connecting plate (65). One end of the L-shaped rod (815) is located between the first vertical rod (812) and the second vertical rod (813). A chamfered surface (811) is provided on one side of the upper horizontal plate (89). A lower horizontal plate (88) is fixedly connected to the bottom surface of one end of the upper horizontal plate (89). The bottom rod (87) is in contact with the surface of the upper horizontal plate (89).

2. The automotive parts forging die assembly according to claim 1, characterized in that: A support plate (61) is fixedly connected to the upper surface of the U-shaped frame (4). A cylinder (62) is fixedly connected to the upper surface of the support plate (61). A central plate (610) is fixedly connected to one side of the cylinder (62). A disc (69) is fixedly connected to the other end of the central plate (610). An electric push rod (5) is installed on the side of the disc (69) near the cylinder (62). An optical axis (64) is inserted inside the connecting plate (65). The optical axis (64) is rotatably connected to the connecting plate (65) through a bearing.

3. The automotive parts forging die assembly according to claim 1, characterized in that: The industrial pneumatic spray gun (67) is fixedly connected in the mounting groove (613) opened at one end of the optical axis (66). The interface of the industrial pneumatic spray gun (67) is provided with a connecting pipe (68). The connecting pipe (68) has two independent pipelines inside, which are respectively connected to the air inlet and liquid inlet of the industrial pneumatic spray gun (67).

4. The automotive parts forging die assembly according to claim 1, characterized in that: The base plate (1) is fixedly connected to two sides with slide bars (611). The slide bars (611) are inserted into the auxiliary slide groove (612) opened inside the U-shaped frame (4). The slide bars (611) and the U-shaped frame (4) are slidably connected.

5. The automotive parts forging die assembly according to claim 1, characterized in that: The cylinder (62) has an upper horizontal groove (81) inside. The upper horizontal groove (81) and the lower horizontal groove (78) are symmetrically arranged inside the cylinder (62). The top ends of the arc-shaped groove two (77) and arc-shaped groove one (76) are connected to the upper horizontal groove (81).

6. The automotive parts forging die assembly according to claim 2, characterized in that: T-shaped blocks (817) are inserted into two T-shaped grooves (816) on one side of the second disc (69). The two T-shaped blocks (817) are fixedly connected to the second weight (86) and the first weight (85) respectively. A stop bar (818) is fixedly connected to one side of the second disc (69). The stop bar (818) fits against the surface of the synchronous pulley (83) and is used to block the synchronous belt (84). The hexagonal rod (82) has a through hole for accommodating the connecting pipe (68).

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