An indirect hot forming device for reducing metal oxidation

Abstract

The present invention discloses an indirect hot forming device for reducing metal oxidation, which relates to the technical field of indirect hot forming, and comprises: a base, a transfer cylinder, and a reversing block; the transfer cylinder is fixed on the base through supporting legs, and its interior is connected to a partition by rotating shaft 1, and slides that can slide up and down are provided on both sides of the partition, and a grabbing assembly is installed on the slide; a moving platform is slidably provided on the base, and the reversing block is rotatably installed on the moving platform by rotating shaft 2, and forming mechanisms are provided on both end surfaces of the transfer cylinder, and the transfer cylinder is divided into a material taking chamber and a material loading chamber by the partition, one side of the transfer cylinder is fixedly connected to the connecting cylinder, and the other side of the transfer cylinder is fixedly connected to the temporary storage cylinder; the present invention can reduce the oxygen content in the material loading chamber by injecting inert gas through the first air inlet pipe, and the workpiece in the material taking chamber can be transferred to the material loading chamber after the partition is rotated 180°, and inert gas can be injected into the connecting cylinder and the material taking chamber through the second air inlet pipe, and the inert gas can spread into the furnace body to create a low-oxygen environment for the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of indirect thermoforming, in particular to an indirect thermoforming device for reducing metal oxidation. Background Art

[0002] Indirect hot forming technology is a special forming process that first cold stamps the steel plate into shape, then heats it, places it into a water-cooled mold, and quenches it under the pressure of a high-speed dedicated hydraulic press to press out the martensitic ultra-high-strength hot-formed part. The hot part is then placed in a cold mold to harden and determine the final geometry.

[0003] For example, the invention patent with the announcement number CN120038221A discloses an indirect hot forming process for a sheet material, comprising the following steps: S100, cold stamping a pre-prepared sheet material to form a blank of a predetermined shape; S200, placing the blank material prepared in S100 into a heating and conveying device through an inlet for preheating, and the discharge port of the heating and conveying device delivers the preheated blank material from the discharge port to a hot pressing station; S300, quenching the preheated blank material under the pressure of a mold, and obtaining a finished product after cooling and hardening; wherein the heating and conveying device has at least one inlet and one discharge port, and is used to heat the blank material and transfer it to the hot pressing station;

[0004] However, in the indirect thermoforming process, the problem of metal oxidation is particularly prominent. The formation of an oxide layer will damage the mold, affect the dimensional deviation of the workpiece, and reduce the smoothness of the workpiece surface. The core pain point of the oxidation problem is that the workpiece is exposed to the air twice; first, in the heating stage, the material is heated at a high temperature in the furnace for a long time (especially when it exceeds 600°C), and the surface easily reacts with oxygen to form an oxide scale; then in the transfer stage, during the "window period" (a few seconds to tens of seconds) from the workpiece being taken out of the furnace to being placed in the mold, the high-temperature metal is in direct contact with the air, and oxidation is rapidly accelerated. Therefore, providing an indirect thermoforming device that can reduce metal oxidation is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides an indirect thermoforming device for reducing metal oxidation, which solves the technical problem that the workpiece is prone to rapid oxidation during the processing of the existing indirect thermoforming device.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an indirect hot forming device for reducing metal oxidation, comprising:

[0007] Base, transfer cylinder, reversing block;

[0008] The transfer cylinder is fixed on the base through the support legs, and its interior is connected to the partition through a rotating shaft. Slide plates that can slide up and down are set on the surfaces of both sides of the partition, and the grabbing components are installed on the slide plates;

[0009] A moving platform is slidably arranged on the base, and the reversing block is rotatably mounted on the moving platform via a second rotating shaft. Forming mechanisms are arranged on both end surfaces of the reversing block, and a telescopic rod 1 for driving the moving platform is fixedly mounted on the base;

[0010] The transfer cylinder is divided into a material removal chamber and a material loading chamber by a partition. One side of the transfer cylinder is fixedly connected to the connecting cylinder. Multiple conveying rollers are set in the connecting cylinder to convey the tray containing the workpiece. A slot for limiting the tray is set at the connection between the transfer cylinder and the connecting cylinder.

[0011] The other side of the transfer cylinder is fixedly connected to the temporary storage cylinder. The inner diameter of the temporary storage cylinder matches the outer diameters of both ends of the reversing block, and both ends of the reversing block can be inserted into the temporary storage cylinder and sealed.

[0012] The feeding chamber is connected to the first air inlet pipe and the one-way exhaust pipe, and the connecting tube is connected to the second air inlet pipe.

[0013] Preferably, the forming mechanism includes:

[0014] A fixed seat fixed below the end face of the reversing block and a pressure plate slidably mounted above the fixed seat;

[0015] The lower mold is installed on the fixing seat, and the upper mold is installed on the pressing plate;

[0016] A groove is provided in the commutation block, and a mounting opening with a circular portion is provided between the groove and the end surface of the commutation block. A circular block matching its shape is rotatably provided in the mounting opening and located on the circular portion.

[0017] The circular block is fixedly connected to connecting rod one and connecting rod two on both sides. One end of connecting rod one is hinged with connecting rod three. The bottom of connecting rod three is hinged on the pressure plate. Telescopic rod two is hinged in the groove. The telescopic end of telescopic rod two is hinged with one end of connecting rod two.

[0018] Preferably, the grabbing assembly comprises:

[0019] A pair of sliders are horizontally slidably arranged on the slide, the sliders are fixedly mounted with an extension rod 1, and the extension rod 1 is mounted with multiple pairs of pneumatic clamps;

[0020] An upper cover is fixed above the partition, and telescopic rod three and motor three are fixed on the outside of the upper cover. The telescopic end of telescopic rod three is connected to the slide, and the output end of motor three is connected to the transmission shaft. The transmission shaft passes through the upper cover and is inserted into the rotating drum rotatably arranged on the front side of the slide. The two are connected by a sliding key.

[0021] A pair of threaded rods are rotatably arranged on the front surface of the slide plate. The threaded rods are threadedly connected to the sliders, and the ends of the threaded rods are connected to the rotating drum through bevel gears.

[0022] Preferably, a pair of side bars are provided in the connecting cylinder above the conveying roller to limit the horizontal displacement of the pallet.

[0023] Preferably, when the reversing block blocks the port of the temporary storage cylinder, the length of the temporary storage cylinder accommodates the forming mechanism so that it does not extend into the transfer cylinder.

[0024] Preferably, the bottom of the rotating shaft is rotatably connected to the base and is provided with a worm gear ring 1, the base is fixedly installed with a motor 1, and the output end of the motor 1 is connected to a worm 1 that engages with the worm gear ring 1.

[0025] Preferably, the bottom of the second rotating shaft is rotatably connected to the mobile platform and is provided with a second worm gear ring. The mobile platform is fixedly installed with a second motor, and the output end of the second motor is connected to a second worm engaged with the second worm gear ring.

[0026] Beneficial effects

[0027] The present invention provides an indirect hot forming device for reducing metal oxidation, which has the following beneficial effects: the transfer cylinder is separated into a material removal chamber and a material loading chamber by a partition; when the temporary storage cylinder is not blocked, the partition can prevent external air from entering the furnace body through the transfer cylinder, and at the same time prevent the heat in the furnace body from being freely dissipated outward; when the reversing block blocks the temporary storage cylinder port, the oxygen content in the material loading chamber can be reduced by injecting inert gas through the first air inlet pipe and exhausting air through the one-way exhaust pipe, so that the material loading chamber forms a low-oxygen environment before the workpiece is transferred; the workpiece can be removed from the tray by the grabbing assembly on the partition. After the partition rotates 180°, the workpiece in the material-taking chamber can be transferred to the loading chamber, and the workpiece is placed in the molding mechanism through the grabbing component. During this process, the workpiece is always in a low-oxygen environment, which reduces the oxidation of the workpiece. Inert gas can be injected into the connecting tube and the material-taking chamber through the second air inlet pipe, and the inert gas can spread into the furnace body to create a low-oxygen environment for the workpiece; the reversing block has independent integrated molding mechanisms at both ends, and the switching station is driven by motor 2 to rotate 180°. It can realize the synchronous loading of another group of molds while one group of molds is cooling and molding, eliminating the cooling waiting time of the traditional process and improving production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 It is a three-dimensional exploded view of the present invention;

[0030] Figure 3 It is a cross-sectional view of the transfer cylinder, the connecting cylinder, and the temporary storage cylinder;

[0031] Figure 4 It is a cross-sectional view of the commutation block;

[0032] Figure 5 Three-dimensional structure for partitions and grabbing components Figure 1 ;

[0033] Figure 6 Three-dimensional structure for partitions and grabbing components Figure 2 ;

[0034] Figure 7 A three-dimensional diagram of a tray;

[0035] Figure 8 This is a top view of the internal structure of the present invention;

[0036] Figure 9 The relative position of the reversing block and the temporary storage cylinder Figure 1 ;

[0037] Figure 10 The relative position of the reversing block and the temporary storage cylinder Figure 2 ;

[0038] Figure 11 The relative position of the reversing block and the temporary storage cylinder Figure 3 .

[0039] In the figure: 1. Base; 2. Transfer cylinder; 3. Reversing block; 4. Support leg; 5. Rotating shaft 1; 6. Partition plate; 7. Slide plate; 8. Worm gear ring 1; 9. Motor 1; 10. Worm 1; 11. Moving platform; 12. Rotating shaft 2; 13. Telescopic rod 1; 14. Worm gear ring 2; 15. Motor 2; 16. Worm 2; 17. Removal chamber; 18. Loading chamber; 19. Connecting cylinder; 20. Conveyor roller; 21. Tray; 22. Notch; 23. Side bar; 24. Temporary storage cylinder; 25 , first air inlet pipe; 26, one-way exhaust pipe; 27, second air inlet pipe; 28, fixing seat; 29, pressure plate; 30, lower mold; 31, upper mold; 32, groove; 33, mounting port; 34, round block; 35, connecting rod one; 36, connecting rod two; 37, connecting rod three; 38, telescopic rod two; 39, slider; 40, extension rod one; 41, pneumatic clamp; 42, upper cover; 43, telescopic rod three; 44, motor three; 45, transmission shaft; 46, rotating drum; 47, threaded rod. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0041] See also Figures 1-11The present invention provides a technical solution: an indirect hot forming device for reducing metal oxidation, comprising a base 1, a transfer cylinder 2, and a reversing block 3. The transfer cylinder 2 is fixedly arranged on the base 1 through a supporting leg 4. A partition 6 is rotatably connected to the transfer cylinder 2 through a rotating shaft 5. Slide plates 7 that can slide up and down are provided on both side surfaces of the partition 6. A grabbing assembly for grabbing a workpiece is provided on the slide plate 7. The bottom of the rotating shaft 5 is rotatably connected to the base 1, and a worm gear ring 8 is provided at the bottom thereof. A motor 9 is fixedly arranged on the base 1, and a worm 10 meshing with the worm gear ring 8 is installed at the power output end of the motor 9.

[0042] A mobile platform 11 is slidingly provided on the base 1, and the reversing block 3 is rotatably provided on the mobile platform 11 through a second rotating shaft 12. A forming mechanism is provided on both end surfaces of the reversing block 3. A telescopic rod 13 for driving the mobile platform 11 is fixedly provided on the base 1. The bottom of the second rotating shaft 12 is rotatably connected to the mobile platform 11, and a worm gear ring 14 is provided at its bottom. A motor 15 is fixedly provided on the mobile platform 11, and a worm 16 meshing with the worm gear ring 14 is installed at the power output end of the motor 15.

[0043] The transfer cylinder 2 is divided into a material removal chamber 17 and a material loading chamber 18 by a partition 6. A connecting cylinder 19 is fixedly provided on one side of the transfer cylinder 2. A plurality of conveying rollers 20 are provided in the connecting cylinder 19. The conveying rollers 20 are rotated to move the tray 21 for holding the workpiece placed above it, so that the tray 21 in the furnace body is transported to the material removal chamber 17. A slot 22 for limiting the tray 21 is provided at the connection between the transfer cylinder 2 and the connecting cylinder 19. When the tray 21 moves into the slot 22, the workpiece can be under the grabbing assembly. A pair of side bars 23 are provided in the connecting cylinder 19 above the plurality of conveying rollers 20. The pair of side bars 23 are used to limit the two sides of the forward direction of the tray 21 to prevent the tray 21 from tilting and rotating in the horizontal direction.

[0044] A temporary storage cylinder 24 for docking with the reversing block 3 is fixedly provided on the other side of the transfer cylinder 2. The inner diameter of the temporary storage cylinder 24 matches the outer diameters of the two ends of the reversing block 3. Both ends of the reversing block 3 can be inserted into the temporary storage cylinder 24 and sealed. When the reversing block 3 seals the port of the temporary storage cylinder 24, the length of the temporary storage cylinder 24 can accommodate the molding mechanism so that the molding mechanism will not extend into the transfer cylinder 2, thereby avoiding interference with the rotating partition 6. The molding mechanism can be moved into the loading chamber 18 by continuing to move the moving platform 11, and the temporary storage cylinder 24 can always be sealed during the movement.

[0045] The loading chamber 18 is connected to a first air inlet pipe 25 and a one-way exhaust pipe 26. When the reversing block 3 blocks the temporary storage tube 24, the loading chamber 18 cannot be connected to the outside. Inert gas can be filled into the loading chamber 18 through the first air inlet pipe 25, and the air in the loading chamber 18 can be discharged through the one-way exhaust pipe 26 to dilute the oxygen in the loading chamber 18. The connecting tube 19 is connected to a second air inlet pipe 27. Inert gas can be injected into the connecting tube 19 and the material removal chamber 17 through the second air inlet pipe 27, and the inert gas can spread into the furnace body to create a low-oxygen environment for the workpiece.

[0046] The forming mechanism includes a fixed seat 28 and a pressure plate 29. The fixed seat 28 is fixedly installed below the end surface of the reversing block 3, and the pressure plate 29 is slidably installed above the end surface of the reversing block 3. A lower mold 30 is installed on the fixed seat 28, and an upper mold 31 is installed below the pressure plate 29. A groove 32 is opened in the reversing block 3, and a mounting opening 33 with a circular portion is opened between the groove 32 and the end surface of the reversing block 3. A circular block 34 with a matching shape is rotatably arranged in the mounting opening 33. , connecting rod 1 35 and connecting rod 2 36 are fixedly connected on both sides of the circular block 34, one end of connecting rod 1 35 is hinged with connecting rod 3 37, the bottom of connecting rod 37 is hinged on the pressure plate 29, and telescopic rod 2 38 is hinged in the groove 32, and the telescopic end of telescopic rod 2 38 is hinged to one end of connecting rod 2 36. The cooperation between the circular part and the circular block 34 can improve the air tightness while transmitting power, and prevent inert gas from being discharged through the installation port 33 when the reversing block 3 blocks the temporary storage cylinder 24.

[0047] The grabbing assembly includes a pair of sliders 39, which are arranged on the slide plate 7 for sliding in the horizontal direction. A pair of extension rods 40 are fixedly installed on the pair of sliders 39, and a plurality of pairs of pneumatic clamps 41 are fixedly installed on the pair of extension rods 40. The spacing between the plurality of pairs of pneumatic clamps 41 is changed by moving the pair of sliders 39 closer to or farther away from each other. An upper cover 42 is fixedly connected above the partition 6. The upper end of the transfer cylinder 2 is an open end, which can be sealed by the upper cover 42. A telescopic rod 33 is fixedly provided on the outside of the upper cover 42. The telescopic end of the telescopic rod 33 is connected to the slide plate 7, and the slide plate 7 is controlled to move up and down by the telescopic rod 33, thereby adjusting the height of the plurality of pairs of pneumatic clamps 41. A motor 34 is also fixedly provided on the outside of the upper cover 42. The motor 34 4 is fixedly connected to the power output end of the slide 7, and the transmission shaft 45 passes through the upper cover 42 and is placed on the front side of the slide 7. A rotating drum 46 is rotatably provided on the front surface of the slide 7. The transmission shaft 45 is inserted into the rotating drum 46 and the two are connected using a sliding key. When the slide 7 moves up and down, the rotating drum 46 can slide up and down on the transmission shaft 45 while transmitting torque. A pair of threaded rods 47 are rotatably provided on the front surface of the slide 7. The pair of threaded rods 47 are threadedly connected to the pair of sliders 39. The ends of the pair of threaded rods 47 are connected to the rotating drum 46 using bevel gears. When the rotating drum 46 rotates, the pair of threaded rods 47 can be driven to rotate at the same time. The pair of threaded rods 47 have the same rotation direction. When the pair of threaded rods 47 rotate, the pair of sliders 39 can be driven to move closer to or away from each other.

[0048] The working principle and use process of the present invention:

[0049] S1. The workpiece enters the transfer cylinder 2: the workpiece is placed on the tray 21, and the tray 21 is sent into the furnace body for heating. The heated workpiece and the tray 21 are transported to the connecting cylinder 19 through the furnace body, and the tray 21 is moved by rotating the conveying roller 20. When the tray 21 moves into the slot 22, it is blocked. At this time, the workpiece on the tray 21 can be located below the pneumatic clamp 41 in the material removal chamber 17.

[0050] S2. Transfer preparation: Start the telescopic rod three 43 to control the slide plate 7 to descend, and the workpiece is clamped by the pneumatic clamp 41, and then the slide plate 7 is controlled to rise, so that the pneumatic clamp 41 and the clamped workpiece are higher than the upper surface of the lower mold 30 and lower than the lower surface of the upper mold 31. After the workpiece is grabbed, the tray 21 can be moved out of the slot 22 and moved to one side of the furnace body by controlling the reverse rotation of the conveying roller 20 to prevent the tray 21 from interfering with the rotating partition 6. The tray 21 of the removed workpiece can be discharged through the tray return mechanism of the furnace body; if it is necessary to adjust the spacing of the pneumatic clamp 41, start the motor three 44 to rotate the transmission shaft 45, and the transmission shaft 45 drives the rotating drum 46 to rotate. The rotating drum 46 drives a pair of threaded rods 47 to rotate, and the threaded rods 47 drive the pair of pneumatic clamps 41 to move closer to each other; push the moving platform 11 to move through the telescopic rod one 13, so that one end of the reversing block 3 is inserted into the port of the connecting cylinder 19 to seal the connecting cylinder 19 (please refer to Figure 9 The relative position of the middle reversing block 3 and the temporary storage cylinder 24), at this time, the molding mechanism will not enter the transfer cylinder 2, and nitrogen is filled into the upper feeding chamber 18 through the first air inlet pipe 25 to reduce the oxygen content in the feeding chamber 18 and prevent external air from entering the feeding chamber 18.

[0051] S3. Transfer process: When the oxygen content in the loading chamber 18 drops to the set value, the motor 9 is started, and the partition 6 is driven by the motor 9 to rotate 180 degrees, so that the grabbing assembly with the workpiece is moved to the side of the molding mechanism. Since most of the oxygen in the loading chamber 18 has been replaced before the rotation, the rotation of the partition 6 can prevent a large amount of oxygen from entering the material removal chamber 17, so that the workpiece is in a low-oxygen environment and the metal oxidation of the workpiece due to oxygen is reduced; after the partition 6 rotates, the reversing block 3 is pushed by the telescopic rod 13 to move into the transfer cylinder 2, and stops when the workpiece is between the upper mold 31 and the lower mold 30 (see Figure 10 The relative position of the middle reversing block 3 and the temporary storage cylinder 24 is determined), and the slide plate 7 is controlled to descend to place the workpiece on the lower mold 30. During this process, the workpiece is always in a low-oxygen environment. After the workpiece is placed, the motor 3 44 is started to move the pair of pneumatic clamps 41 outward to remove it from between the upper mold 31 and the lower mold 30, so as to prevent the pneumatic clamps 41 from preventing the upper mold 31 and the lower mold 30 from closing.

[0052] S4, workpiece molding: start the telescopic rod 2 38, and push the pressing plate 29 down through the connecting rod 1 35 and the connecting rod 2 36, so that the upper mold 31 and the lower mold 30 are closed, and the workpiece is cooled and formed in the mold. At this time, the mold closing can prevent the workpiece from contacting with the air.

[0053] S5. Remove the workpiece: After the mold is closed, the workpiece is in the mold and can no longer be exposed to a large amount of external air. The reversing block 3 is removed from the connecting cylinder 19 by using the telescopic rod 13 (see Figure 11The relative position of the reversing block 3 and the temporary storage cylinder 24 is determined), and the starting motor 15 drives the reversing block 3 to rotate 180 degrees, turning the forming mechanism on the other side to the side of the connecting cylinder 19 to prepare for the processing of the next workpiece. The mold containing the workpiece is transferred to the side away from the temporary storage cylinder 24 for cooling. By setting up two sets of forming mechanisms, one set of molds can be loaded while the other set of molds is cooling the workpiece, realizing alternating cooling and molding of the workpiece, improving production efficiency, and avoiding the reduction of production efficiency due to excessive cooling time.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An indirect hot forming device for reducing metal oxidation, characterized in that: include: Base (1), transfer cylinder (2), reversing block (3); The transfer cylinder (2) is fixed to the base (1) via the support legs (4), and the interior thereof is rotatably connected to the partition (6) via the rotating shaft (5). Slide plates (7) capable of sliding up and down are provided on both sides of the partition (6), and a grabbing assembly is installed on the slide plate (7); A movable platform (11) is slidably mounted on the base (1), and a reversing block (3) is rotatably mounted on the movable platform (11) via a second rotating shaft (12). Molding mechanisms are provided on both end surfaces of the reversing block, and a telescopic rod (13) for driving the movable platform (11) is fixedly mounted on the base (1); The transfer cylinder (2) is divided into a material removal chamber (17) and a material loading chamber (18) by a partition (6). One side of the transfer cylinder (2) is fixedly connected to a connecting cylinder (19). A plurality of conveying rollers (20) are provided in the connecting cylinder (19) to convey a tray (21) containing workpieces. A notch (22) for limiting the tray (21) is provided at the connection between the transfer cylinder (2) and the connecting cylinder (19). The other side of the transfer cylinder (2) is fixedly connected to the temporary storage cylinder (24), the inner diameter of the temporary storage cylinder (24) matches the outer diameters of both ends of the reversing block (3), and both ends of the reversing block (3) can be inserted into the temporary storage cylinder (24) and sealed; The feeding chamber (18) is connected to the first air inlet pipe (25) and the one-way exhaust pipe (26), and the connecting tube (19) is connected to the second air inlet pipe (27); The molding mechanism includes: A fixed seat (28) fixed below the end surface of the reversing block (3) and a pressure plate (29) slidably mounted above the fixed seat (28); The fixing seat (28) is mounted on the lower mold (30), and the pressing plate (29) is mounted on the upper mold (31); A groove (32) is provided in the commutation block (3), a mounting opening (33) having a circular portion is provided between the groove (32) and the end surface of the commutation block (3), and a circular block (34) having a shape matching the circular portion is rotatably provided in the mounting opening (33); The circular block (34) is fixedly connected to a connecting rod 1 (35) and a connecting rod 2 (36) on both sides. One end of the connecting rod 1 (35) is hinged to a connecting rod 3 (37). The bottom of the connecting rod 3 (37) is hinged to the pressure plate (29). A telescopic rod 2 (38) is hinged in the groove (32). The telescopic end of the telescopic rod 2 (38) is hinged to one end of the connecting rod 2 (36).

2. The indirect hot forming device for reducing metal oxidation according to claim 1, characterized in that: The crawling components include: A pair of sliders (39) are horizontally slidably arranged on the slide plate (7), the sliders (39) are fixedly mounted with an extension rod (40), and the extension rod (40) is mounted with multiple pairs of pneumatic clamps (41); An upper cover (42) is fixed above the partition (6), and a telescopic rod three (43) and a motor three (44) are fixed outside the upper cover (42). The telescopic end of the telescopic rod three (43) is connected to the slide plate (7), and the output end of the motor three (44) is connected to the transmission shaft (45). The transmission shaft (45) passes through the upper cover (42) and is inserted into a rotating drum (46) rotatably arranged on the front side of the slide plate (7). The two are connected by a sliding key. A pair of threaded rods (47) are rotatably provided on the front surface of the slide plate (7), the threaded rods (47) are threadedly connected to the slider (39), and the ends of the threaded rods (47) are connected to the rotating drum (46) through bevel gears.

3. The indirect hot forming device for reducing metal oxidation according to claim 1, characterized in that: A pair of side blocking bars (23) are provided in the connecting cylinder (19) above the conveying roller (20) for limiting the horizontal displacement of the tray (21).

4. The indirect hot forming device for reducing metal oxidation according to claim 1, characterized in that: When the reversing block (3) blocks the port of the temporary storage cylinder (24), the length of the temporary storage cylinder (24) accommodates the forming mechanism so that it does not extend into the transfer cylinder (2).

5. The indirect hot forming device for reducing metal oxidation according to claim 1, characterized in that: The bottom of the rotating shaft 1 (5) is rotatably connected to the base (1) and is provided with a worm gear ring 1 (8). The base (1) is fixedly installed with a motor 1 (9). The output end of the motor 1 (9) is connected to a worm 1 (10) meshing with the worm gear ring 1 (8).

6. The indirect hot forming device for reducing metal oxidation according to claim 1, characterized in that: The bottom of the second rotating shaft (12) is rotatably connected to the mobile platform (11) and is provided with a second worm gear ring (14). The mobile platform (11) is fixedly installed with a second motor (15). The output end of the second motor (15) is connected to a second worm (16) meshing with the second worm gear ring (14).

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