Die steel heat treatment device

Abstract

The invention relates to the technical field of die steel heat treatment, in particular to a die steel heat treatment device. The auxiliary track is arranged at the front position in the front side space of the treatment cylinder, a separation track is arranged at the rear position in the front side space of the treatment cylinder, driving shafts are rotationally arranged in the auxiliary track and between the inner walls of the treatment cylinder, a chain transmission assembly is arranged between the driving shafts on the two sides, and all gears are further arranged at the two ends of each driving shaft; guide rails are arranged on the left inner wall and the right inner wall of the processing barrel, and spur racks meshed with the full gears on the same sides are slidably arranged on the guide rails. And the mounting frame is provided with a buckling assembly, and the rear side of the buckling assembly is connected with a conveying plate. A chain transmission assembly is used for driving a full gear to be meshed with a spur rack, buckling of a buckling plate and a clamping rod is matched, stable entering and exiting of a conveying plate are achieved, and the pushing process is simplified; and in addition, through the auxiliary track, the pushing frame and the separation track which are modularly designed, pushing equipment is effectively prevented from being immersed in cooling oil, and potential hazards are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of die steel heat treatment, and in particular to a die steel heat treatment device. Background Art

[0002] Mold steel heat treatment is a process that changes the internal structure of mold steel through heating, insulation and cooling to improve its mechanical properties (such as hardness, toughness, wear resistance, etc.). This is very important to ensure that the mold steel has sufficient strength, hardness, wear resistance and dimensional stability. It can also reduce internal stress and increase the service life of mold steel.

[0003] In the heat treatment process of mold steel, the plate chain structure of the transport pallet is a key component in the material handling and processing process. Traditional system designs often rely on frequent vertical lifting actions to complete the loading and unloading of materials, and require additional pushing equipment to achieve the forward and backward movement of materials. This not only increases the mechanical complexity and maintenance cost of the device, but also because of the fixed connection between the pushing device and the material frame, the pushing device will also be immersed in the cooling oil tank during the quenching step. When each batch of quenching is completed and ready to be replaced with new materials, the old pushing device will stay on the track, which may cause residual cooling oil to be brought into the heating chamber. In this case, the vapor of the cooling oil may cause a safety hazard of fire or explosion, and may also cause damage to the heating elements. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings in the prior art, the present invention provides a die steel heat treatment device which does not require frequent vertical movements and can reduce the dependence on additional pushing equipment.

[0005] The technical solution of the present invention is: a die steel heat treatment device, comprising:

[0006] The base is hollow inside and has two compartments arranged front and back, the front compartment is used to store cooling oil;

[0007] The treatment cylinder is arranged on the top of the base, a cover door is hingedly arranged on the front side of the treatment cylinder, a shielding plate for separating the front and rear spaces is arranged in the middle of the treatment cylinder, the rear space of the treatment cylinder is a quenching chamber for heat treatment of mold steel, a gate capable of lifting and lowering is arranged on the shielding plate, and an electric push rod with a telescopic end extending downward into the interior is also arranged on the treatment cylinder;

[0008] An auxiliary track is arranged at a front position in the space on the front side of the treatment tube, and a partition track that fits with the bottom of the gate is arranged at a rear position in the space on the front side of the treatment tube. A driving shaft is rotatably arranged in the auxiliary track and between the inner walls of the treatment tube, and a chain transmission assembly is arranged between the driving shafts on both sides to rotate the driving shafts on both sides synchronously. Full gears are also arranged at both ends of the driving shaft, and guide rails are arranged on the left and right inner walls of the treatment tube, and a spur rack meshing with the full gear on the same side is slidably arranged on the guide rails;

[0009] A mounting frame is arranged between the front ends of the spur racks on both sides, a buckle assembly is arranged on the mounting frame, and a conveying plate for placing and processing mold steel is connected to the rear side of the buckle assembly;

[0010] The lifting assembly is arranged in the processing cylinder, and the lifting assembly includes a pushing frame connected between the auxiliary track and the partition track, which is used for assisting the movement and supporting the conveying plate loaded with the mold steel.

[0011] In one of the embodiments, the lifting assembly also includes a winch arranged at the top of the processing cylinder, the rope ends on both sides of the winch are connected to segmented ropes, the segmented ropes are connected to the lifting platform, the pushing frame is connected between the lifting platforms on both sides, and upwardly extending guide rods are arranged around the front compartment of the base. The lifting platform penetrates and slides on the guide rods on the same side for lifting operations during oil immersion cooling.

[0012] In one of the embodiments, the snap-fit ​​assembly includes a clamping rod hingedly mounted on a mounting frame, the clamping rod being in contact and engagement with the telescopic end of the electric push rod, a torsion spring being arranged between the two sides of the clamping rod and the mounting frame, and a buckle plate being snap-fitted with the clamping rod being arranged on the side of the conveying plate close to the mounting frame for connecting and fixing the position of the conveying plate.

[0013] In one of the embodiments, the front end of the buckle plate is a downwardly inclined slope suitable for contacting with the clamping rod to achieve buckling.

[0014] In one of the embodiments, it also includes a load-bearing plate symmetrically arranged on the lifting platform front and back, and a load-bearing frame is also arranged in the middle of the lifting platform. The rope ends on both sides of the segmented rope respectively pass through the load-bearing frame in the middle, and then are respectively connected to the adjacent load-bearing plates on the same side to balance and support the lifting platform.

[0015] In one of the embodiments, it also includes a partition plate arranged in the rear compartment of the base to divide the rear compartment into upper and lower compartments. A lower circulation pipe is arranged in the lower compartment, and an oil pumping ring for pumping cooling oil is installed at the bottom of the front compartment of the base. The oil pumping ring is connected to the lower circulation pipe. A cooling plate is also arranged at the top of the lower circulation pipe. An upper circulation pipe is also connected between the cooling plate and the partition plate for transporting the cooled oil.

[0016] In one of the embodiments, it also includes side frames respectively arranged on both sides of the base, and a smoke extraction hood is slidably arranged in the side frame to contact and cooperate with the lifting platform on the same side, so as to extract the smoke generated after cooling. An elastic part is connected between the smoke extraction hood and the inner wall of the side frame on the same side, and an exhaust pipe passing through the corresponding side frame is connected to the rear end of the smoke extraction hood.

[0017] In one of the embodiments, it also includes injection pipes arranged on the left, right and rear sides of the front compartment of the base, respectively. The injection pipes are connected by connecting pipes. An extraction pump located in the upper compartment is installed in the rear compartment of the base, and the water outlet of the extraction pump is connected to the adjacent injection pipe.

[0018] Beneficial effects: 1. In order to simplify the pushing process and avoid the traditional frequent vertical lifting actions and the use of additional pushing equipment, the chain drive assembly is used to drive the meshing of the full gear and the spur rack, and the buckle plate and the card rod are engaged to achieve smooth entry and exit of the conveyor plate to simplify the pushing process; in addition, the modularly designed auxiliary rails, pushing frames and partition rails can effectively prevent the pushing equipment from being immersed in the cooling oil, reduce the risk of cooling oil being brought into the quenching chamber, effectively avoid potential fire or explosion hazards, protect the heating elements, and reduce the mechanical complexity and maintenance difficulty of the device.

[0019] 2. The present invention also integrates an efficient cooling oil circulation structure, including components such as a cooling plate, an oil pumping ring, upper and lower circulation pipes, and an extraction pump, which can effectively cool the cooling oil, ensure the stability of the cooling medium temperature, and significantly improve the cooling efficiency of the mold steel.

[0020] 3. The present invention is equipped with a smoke hood and an exhaust pipe, which can instantly extract the smoke generated during the cooling process, keep the air in the working environment fresh, and greatly improve the working conditions of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a cross-sectional view of the three-dimensional structure of the base and the processing tube of the present invention after being cut open.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the internal parts of the treatment tube of the present invention.

[0024] Figure 4 It is an exploded schematic diagram of the chain transmission assembly, the conveying plate and the pushing frame after being disassembled.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the mounting frame, the clamping rod, the torsion spring, the conveying plate and the buckle plate of the present invention.

[0026] Figure 6The present invention is a schematic diagram of the use status of the components such as the winch, segmented rope and lifting platform.

[0027] Figure 7 It is a three-dimensional structural schematic diagram of the oil pumping ring, smoke extraction hood and other parts of the present invention.

[0028] Figure 8 It is a schematic diagram of the planar structure of components such as the lower circulation pipe, cooling plate and upper circulation pipe of the present invention.

[0029] Fig. 9 It is a three-dimensional structural schematic diagram of the smoke extraction hood and the exhaust pipe of the present invention.

[0030] Markings in the figure are: 100, mold steel, 1, base, 11, side frame, 12, partition plate, 2, treatment cylinder, 21, quenching chamber, 3, shielding plate, 31, gate, 4, electric push rod, 5, auxiliary track, 51, partition track, 52, drive shaft, 53, full gear, 54, chain drive assembly, 55, guide rail, 56, spur rack, 6, mounting frame, 61, clamping rod, 611, torsion spring, 62, conveying plate, 63, buckle plate, 7, winch, 71, segmented rope, 72, lifting platform, 721, load-bearing plate, 722, load-bearing frame, 73, pushing frame, 74, guide rod, 8, oil pumping ring, 81, lower circulation pipe, 82, cooling plate, 83, upper circulation pipe, 9, smoke hood, 91, exhaust pipe, 92, elastic part, 93, injection pipe, 94, connecting pipe, 95, extraction pump. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0032] Embodiment: A die steel heat treatment device, such as Figure 1-Figure 6 As shown, including:

[0033] The base 1 is hollow inside and has two compartments arranged front and back, and the front compartment is used to store cooling oil;

[0034] The processing cylinder 2 is arranged on the top of the base 1. A cover door is hingedly arranged on the front side of the processing cylinder 2. A shielding plate 3 for separating the front and rear spaces is arranged in the middle of the processing cylinder 2. The rear space of the processing cylinder 2 is a quenching chamber 21 for heat treatment of the mold steel 100. A gate 31 capable of lifting and lowering is arranged on the shielding plate 3. An electric push rod 4 with a telescopic end extending downward into the interior is also fixedly arranged on the processing cylinder 2.

[0035] The auxiliary track 5 is arranged at the front position in the space on the front side of the processing cylinder 2, and a partition track 51 is arranged at the rear position of the space on the front side of the processing cylinder 2, which is in contact with the bottom of the gate 31. A driving shaft 52 is rotatably arranged on the left and right sides of the auxiliary track 5 and between the left and right inner walls of the processing cylinder 2, and a chain transmission assembly 54 is arranged between the two ends of the driving shafts 52 on both sides to rotate the driving shafts 52 on both sides in a synchronous trend. Full gears 53 are also arranged at the left and right ends of the driving shaft 52, and guide rails 55 are arranged on the left and right inner walls of the processing cylinder 2. A spur rack 56 meshing with the full gear 53 on the same side is slidably arranged on the guide rails 55;

[0036] Specifically, it can be seen from the above that the auxiliary track 5 and the partition track 51 are respectively arranged at the front and rear of the front space of the processing cylinder 2, and a certain distance is maintained between the two, so as to provide sufficient space for the subsequent mold steel 100 to enter the front compartment of the base 1. In addition, a conveying mechanism that can move in the front and rear directions is formed by the chain transmission assembly 54, the drive shaft 52, the full gear 53 and the spur rack 56. When the mold steel 100 is transferred from the front space of the processing cylinder 1 to the quenching chamber 21, the guide rails 55 on both sides are used to quickly connect and convey the mold steel 100, thereby ensuring the continuity of the transmission path of the mold steel 100, avoiding unnecessary frequent vertical position adjustments in traditional operations, and while giving the device its own conveying capacity, it also simplifies the overall conveying structure and effectively reduces the dependence on external pushing equipment.

[0037] The mounting frame 6 is arranged between the front ends of the spur racks 56 on both sides. A buckling assembly is arranged on the mounting frame 6. The rear side of the buckling assembly is connected with a conveying plate 62 for placing and processing the mold steel 100. By buckling and connecting the necessary conveying components, it can not only effectively simplify the frequent deployment and processing in traditional operations, but also make the overall operation process simpler and more convenient, thereby improving the flexibility and usability of the device;

[0038] The lifting assembly is arranged in the processing cylinder 2, and the lifting assembly includes a pushing frame 73 connected between the auxiliary track 5 and the partition track 51, which is used for assisting the movement and supporting the conveying plate 62 loaded with the mold steel 100.

[0039] like Figure 2-Figure 4 and Figure 6 As shown, the lifting assembly also includes a winch 7 arranged at the top of the processing tube 2, and the left and right rope ends of the winch 7 are connected to segmented ropes 71, and the segmented ropes 71 are connected to lifting platforms 72. The pushing frame 73 is connected between the lifting platforms 72 on both sides, and guide rods 74 extending upward are arranged around the front compartment of the base 1. The lifting platform 72 penetrates and slides on the guide rods 74 on the same side, and is used for lifting operations during oil immersion cooling.

[0040] Specifically, see Figure 6The winding operation of the winch 7 is adopted to realize efficient lifting and lowering of the lifting platform 72, the pushing frame 73 and the conveying plate 62 loaded with the mold steel 100, so that the mold steel 100 can quickly enter the cooling oil in the base 1 for cooling treatment, and due to the modular design between the pushing frame 73 and the auxiliary track 5 and the partition track 51, direct contact between the conveying components and the cooling oil is effectively avoided, thereby reducing the oil adhesion between the tracks, reducing the risk of the cooling oil being carried out, and improving the potential fire hazard.

[0041] like Figure 2-Figure 5 As shown, the snap-fit ​​assembly includes a clamping rod 61 hingedly arranged on the mounting frame 6, the clamping rod 61 contacts and cooperates with the telescopic end of the electric push rod 4, and a torsion spring 611 is arranged between the left and right sides of the clamping rod 61 and the mounting frame 6, and a buckle plate 63 that snaps and cooperates with the clamping rod 61 is arranged on the side of the conveying plate 62 close to the mounting frame 6, which is used to connect and fix the position of the conveying plate 62, and the front side end of the buckle plate 63 is a downwardly inclined slope, which is suitable for contacting with the clamping rod 61 to achieve snapping.

[0042] Specifically, through the automatic snap-fit ​​mechanism between the clamping rod 61 and the buckle plate 63, the conveying plate 62 loaded with the mold steel 100 can be quickly and easily docked and conveyed, and with the assistance of the inclined surface of the buckle plate 63, the clamping rod 61 can adapt to the moving contact and complete the automatic snap-fit ​​process. Compared with traditional operations, it can effectively reduce unnecessary adjustment actions, further simplify the operating process and reduce unnecessary motion trajectories, thereby improving the overall operating efficiency of the device and enhancing the stability of the overall operation.

[0043] like Figure 4 and Figure 6 As shown, it also includes a load-bearing plate 721 symmetrically arranged on the lifting platform 72 front and back, and a load-bearing frame 722 is also arranged in the middle of the lifting platform 72. The rope ends on both sides of the segmented rope 71 respectively pass through the load-bearing frame 722 in the middle, and are then respectively connected to the adjacent load-bearing plates 721 on the same side, which can effectively balance the support points of the segmented rope 71, thereby stably and balancedly supporting the lifting platform 72.

[0044] like Figure 7 and Figure 8 As shown, it also includes a partition plate 12 arranged in the rear compartment of the base 1 to divide the rear compartment into an upper and lower compartments. A lower circulation pipe 81 is arranged in the lower compartment, and an oil pumping ring 8 for pumping cooling oil is installed at the bottom of the front compartment of the base 1. The oil pumping ring 8 is connected to the lower circulation pipe 81. A cooling plate 82 is also arranged at the top of the lower circulation pipe 81. An upper circulation pipe 83 is also connected between the cooling plate 82 and the partition plate 12 for transporting the cooling rear oil.

[0045] Specifically, when in use, it is necessary to equip the pipeline between the pumping ring 8 and the lower circulation pipe 81 with a power source (pump body), so as to realize the extraction of cooling oil in the front compartment of the base 1 through the pumping ring 8, so that the heated cooling oil after use flows through the lower circulation pipe 81, the cooling plate 82 and the lower circulation pipe 81 for cooling treatment, so that the cooling oil can maintain a stable use state, thereby ensuring the cooling effect on the mold steel 100.

[0046] like Figure 2 , Figure 7 and Fig. 9 As shown, it also includes side frames 11 respectively arranged on the left and right sides of the base 1, and a smoke hood 9 is slidably arranged in the side frames 11 to contact and cooperate with the lifting platform 72 on the same side. The smoke hood 9 is used to extract the smoke generated after cooling, and the cross-section of the smoke hood 9 is triangular, so that its upper and lower sides are inclined surfaces, so as to make a contact-type pushing action with the lifting platform 72, and an elastic member 92 is connected between the smoke hood 9 and the inner wall of the side frame 11 on the same side. In this embodiment, the elastic member 92 is a spring, which can provide the smoke hood 9 with the necessary elastic force during the reset operation, and the rear end of the smoke hood 9 is connected to an exhaust pipe 91 passing through the corresponding side frame 11 to extract the exhaust of smoke, thereby reducing safety hazards.

[0047] like Figure 2 , Figure 7 and Figure 8 As shown, it also includes injection pipes 93 respectively arranged on the left, right and rear sides of the front compartment of the base 1, and each injection pipe 93 is connected with a connecting pipe 94. An extraction pump 95 located in the upper compartment is installed in the rear compartment of the base 1, and the water outlet of the extraction pump 95 is connected to the adjacent injection pipe 93. Through the coordinated operation of the above-mentioned components, the cooling oil after cooling can be refluxed, thereby ensuring the normal operation of the device.

[0048] When in use, ensure that the front compartment of the base 1 is filled with cooling oil. At this time, the pushing frame 73 is flush with the auxiliary track 5 and the partition track 51, the quenching chamber 21 is in a burning state, and the gate 31 is in a closed state. From then on, the cover door of the processing tube 2 is opened, the driving member is started, and the driving shaft 52 is driven to rotate. Under the action of the chain transmission components 54 on both sides, the driving shafts 52 on both sides rotate synchronously, thereby driving the full gear 53 to rotate and operate, and then mesh with the spur rack 56 on the same side. The spur rack 56 moves forward along the guide rails 55 on both sides, thereby driving the mounting frame 6, the clamping rod 61 and the conveying plate 62 engaged by the buckle plate 63 thereon to move forward. Under the auxiliary movement of the pushing frame 73 and the auxiliary track 5, the conveying plate 62 can be pushed out of the processing tube 2. After that, the staff puts the mold steel 100 to be processed on the conveying plate 62, and then the conveying plate 62 moves back into the processing cylinder 2, so that the mold steel 100 to be processed can be continuously conveyed backwards, until the conveying plate 62 is close to the gate 31, and then the gate 31 is started to convey the mold steel 100 into the quenching chamber 21, until the clamping rod 61 moves under the electric push rod 4, and then the electric push rod 4 is started to extend its telescopic end, so as to contact and push the clamping rod 61 upward, and the torsion spring 611 is deformed, so that the clamping rod 61 is disengaged from the buckle plate 63, thereby releasing the buckle restriction on the conveying plate 62, and then the spur rack 56 moves forward for conveying, so that the spur rack 56 and its upper parts re-enter the front space of the processing cylinder 2, and then the gate is closed. 31, so as to heat treat the mold steel 100. After the mold steel 100 is quenched, the gate 31 can be opened, and then the mounting frame 6 and the clamping rod 61 are driven to move backward until the clamping rod 61 contacts the buckle plate 63. The clamping rod 61 is embedded in the buckle plate 63 along the inclined surface of the buckle plate 63, thereby docking the conveying plate 62 together with the mold steel 100 thereon, so as to drive the whole to be transported forward, thereby returning to the position above the pushing frame 73, and then starting the winch 7 to perform the wire release operation, thereby lowering the lifting platform 72, thereby synchronously driving the pushing frame 73 and the conveying plate 62 loaded with the mold steel 100 to move downward together, and the conveying plate 62 is separated from the contact between the clamping rod 61, thereby dragging the upper parts into the base together. 1, during this process, the lifting platform 72 will come into contact with the smoke hoods 9 on both sides, thereby pushing the smoke hoods 9 to move toward the corresponding side frames 11, and the elastic member 92 will be deformed, thereby providing space for the movement of the lifting platform 72, until the lifting platform 72 is separated from the contact with the smoke hood 9, and then the elastic member 92 is reset, and the smoke hood 9 is reset and exposed, and the mold steel 100 is also immersed in the cooling oil for cooling treatment. At the same time, a pump body is installed on the exhaust pipes 91 on both sides, so that the smoke generated by the cooling is pumped through the exhaust pipes 91 and then by the smoke hood 9, so as to empty the accumulated smoke. After the mold steel 100 is cooled, the winch 7 can be started to reel in, so as to lift the lifting platform 72 and the components thereon.Until the push frame 73 is flush with the auxiliary track 5 and the partition track 51, the cover door can be opened and the above operation can be repeated to transport the processed mold steel 100 forward, thereby completing the overall heat treatment process; finally, when the new mold steel 100 needs to be cooled, the cooling oil can be replaced, and the used cooling oil is extracted through the pumping ring 8, and then the cooling oil enters the lower circulation pipe 81, and then flows through the cooling plate 82 for cooling, and then through the pumping of the upper extraction pump 95, the cooled cooling oil is transported to the upper circulation pipe 83 and then enters the upper compartment of the partition plate 12, and then transported to various connecting pipes 94 by the extraction pump 95, so as to complete the cooling and replacement of the cooling oil through the three-sided injection pipe 93 toward the front compartment of the base 1.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A die steel heat treatment device, comprising: The base (1) is hollow inside and has two compartments arranged front and back, the front compartment being used to store cooling oil; the base (1) is characterized in that it also includes: a treatment cylinder (2) arranged on the top of the base (1), a cover door is hingedly arranged on the front side of the treatment cylinder (2), a shielding plate (3) is arranged in the middle of the treatment cylinder (2) for separating the front and rear spaces, the rear space of the treatment cylinder (2) is a quenching chamber (21) for heat treatment of mold steel (100), a gate (31) capable of lifting and lowering is arranged on the shielding plate (3), and an electric push rod (4) with a telescopic end extending downward into the interior is also arranged on the treatment cylinder (2); An auxiliary track (5) is arranged at a front position in the space on the front side of the processing cylinder (2); a partition track (51) is arranged at a rear position in the space on the front side of the processing cylinder (2) and is in contact with the bottom of the gate (31); a driving shaft (52) is rotatably arranged in the auxiliary track (5) and between the inner walls of the processing cylinder (2); a chain transmission assembly (54) is arranged between the driving shafts (52) on both sides so as to rotate the driving shafts (52) on both sides in a synchronous manner; full gears (53) are also arranged at both ends of the driving shaft (52); guide rails (55) are arranged on the left and right inner walls of the processing cylinder (2); and a spur rack (56) is slidably arranged on the guide rails (55) and is meshed with the full gear (53) on the same side; A mounting frame (6) is arranged between the front ends of the spur racks (56) on both sides, and a snap-fit ​​assembly is arranged on the mounting frame (6). A conveying plate (62) for placing the processed mold steel (100) is connected to the rear side of the snap-fit ​​assembly; a lifting assembly is arranged in the processing cylinder (2), and the lifting assembly includes a pushing frame (73) connected between the auxiliary track (5) and the partition track (51), and is used to assist in moving and supporting the conveying plate (62) loaded with the mold steel (100).

2. A die steel heat treatment device as claimed in claim 1, characterized in that: The lifting assembly also includes a winch (7) arranged at the top of the treatment cylinder (2), the rope ends on both sides of the winch (7) are connected to segmented ropes (71), the segmented ropes (71) are connected to lifting platforms (72), the pushing frame (73) is connected between the lifting platforms (72) on both sides, and guide rods (74) extending upward are arranged around the front compartment of the base (1), and the lifting platform (72) penetrates and slides on the guide rods (74) on the same side for lifting operation during oil immersion cooling.

3. A die steel heat treatment device as claimed in claim 2, characterized in that: The snap-fit ​​assembly includes a clamping rod (61) hingedly arranged on the mounting frame (6), the clamping rod (61) contacts and cooperates with the telescopic end of the electric push rod (4), torsion springs (611) are arranged between the two sides of the clamping rod (61) and the mounting frame (6), and a buckle plate (63) that snaps with the clamping rod (61) is arranged on the side of the conveying plate (62) close to the mounting frame (6) for connecting and fixing the position of the conveying plate (62).

4. A die steel heat treatment device as claimed in claim 3, characterized in that: The front end of the buckle plate (63) is a downwardly inclined inclined surface suitable for contacting with the clamping rod (61) to achieve buckling.

5. A die steel heat treatment device as claimed in claim 4, characterized in that: It also includes a bearing plate (721) symmetrically arranged on the lifting platform (72) in the front and rear directions, and a load-bearing frame (722) is also arranged in the middle of the lifting platform (72). The rope ends on both sides of the segmented rope (71) respectively pass through the load-bearing frame (722) in the middle, and are then respectively connected to the adjacent bearing plates (721) on the same side to balance and support the lifting platform (72).

6. A die steel heat treatment device as claimed in claim 5, characterized in that: It also includes a partition plate (12) arranged in the rear compartment of the base (1) so that the rear compartment is divided into upper and lower compartments. A lower circulation pipe (81) is arranged in the lower compartment. An oil pumping ring (8) for pumping cooling oil is installed at the bottom of the front compartment of the base (1). The oil pumping ring (8) is connected to the lower circulation pipe (81). A cooling plate (82) is also arranged at the top of the lower circulation pipe (81). An upper circulation pipe (83) is also connected between the cooling plate (82) and the partition plate (12) for conveying the cooling rear oil.

7. A die steel heat treatment device as claimed in claim 6, characterized in that: It also includes side frames (11) respectively arranged on both sides of the base (1), and a smoke extraction hood (9) is slidably arranged in each of the side frames (11) and contacts and cooperates with the lifting platform (72) on the same side, so as to extract smoke generated after cooling. An elastic member (92) is connected between the smoke extraction hood (9) and the inner wall of the side frame (11) on the same side, and an exhaust pipe (91) passing through the corresponding side frame (11) is connected to the rear end of the smoke extraction hood (9).

8. A die steel heat treatment device as claimed in claim 7, characterized in that: It also includes injection pipes (93) respectively arranged on the left, right and rear sides of the front compartment of the base (1), and connecting pipes (94) are connected between the injection pipes (93). In the rear compartment of the base (1), an extraction pump (95) located in the upper compartment is installed, and the water outlet of the extraction pump (95) is connected to the adjacent injection pipe (93).

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