A spheroidizing structure annealing device and annealing method for cold working die steel

Abstract

The present invention relates to the technical field of annealing, and discloses a spheroidizing structure annealing device and an annealing method for cold working die steel, comprising a heating box, a mounting groove is provided on one side of the inner wall of the heating box, a plurality of heating tubes are fixedly installed inside the mounting groove, a mounting tube is connected through the lower surface of the heating box, a fan is fixedly installed inside the mounting tube, a dust blocking plate is fixedly connected to the upper surface of the mounting tube, a support plate is fixedly connected to one side of the heating box, and a hydraulic cylinder is fixedly installed on one side of the heating box. The present invention facilitates uniform heating of various parts of the die steel, accelerates the internal heat transfer process, reduces the problem of local overheating or insufficient heating, is conducive to faster reaching the temperature required for annealing, and can automatically push the die steel out of the equipment after it is heated, without manual operation or the use of tools, reducing the risk of scalding caused by high temperature during manual operation, and improving the safety of equipment use.

Description

Technical Field

[0001] The invention relates to the technical field of annealing, and in particular to a spheroidizing structure annealing device and an annealing method for cold working die steel. Background Art

[0002] Cold working die steel is mainly used to manufacture dies for pressing and forming workpieces in a cold state, such as cold blanking dies, cold stamping dies, cold drawing dies, stamping dies, cold extrusion dies, threaded dies and powder dies. Spheroidizing annealing is a heat treatment process that uses heating and cooling to form carbides inside the die steel into a fine and uniform spherical distribution, thereby improving its organizational structure and performance. This treatment method can make the grains of the die steel refined, the grain boundaries clearer, and the intercrystalline connections tighter, thereby improving its toughness and plasticity.

[0003] After searching, the Chinese patent with announcement number CN112342346B discloses an efficient and fast annealing equipment for mold steel processing and production. In view of the complex structure of the existing annealing equipment for mold steel processing and production, which leads to inefficient and inefficient use, the heating ring mechanism is quickly separated from the mold steel, which is convenient for the later operation of the mold steel and shortens the operation time. The structure is simple, efficient and fast, which is convenient for the staff to operate. The universal wheel assists the use of the electric hydraulic push rod to increase the speed of movement of the electromagnetic heating mechanism and at the same time supports the electromagnetic heating mechanism to prevent the electric hydraulic push rod from bending due to the weight of the electromagnetic heating mechanism for a long time, thereby increasing the safety of the electric hydraulic push rod. One universal wheel can achieve multiple uses and is highly practical. Water is discharged through the water outlet to pre-cool the mold steel to be placed in the cooling box for cooling. Better yet, annealing treatment is achieved, which has an efficient and fast effect.

[0004] When the above-mentioned annealing equipment is used, the efficiency of processing mold steel is improved. However, in the prior art, when heating the mold steel, the mold steel is usually placed directly on a placement plate inside the heating box. The mold steel is in a static state, which makes it inconvenient to flip the mold steel. When the mold steel is heated, the bottom surface is difficult to contact the heat, resulting in uneven heating of the mold steel, resulting in reduced quality after heating, and increasing the product failure rate. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a spheroidizing structure annealing device and annealing method for cold working die steel.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a spheroidizing structure annealing equipment for cold working die steel, comprising a heating box, a mounting groove is provided on one side of the inner wall of the heating box, a plurality of heating tubes are fixedly installed inside the mounting groove, a mounting tube is through-connected to the lower surface of the heating box, a fan is fixedly installed inside the mounting tube, a dust barrier plate is fixedly connected to the upper surface of the mounting tube, a support plate is fixedly connected to one side of the heating box, a hydraulic cylinder is fixedly installed on one side of the heating box, a sealing plate is fixedly connected to the output end of the hydraulic cylinder, a through groove is provided on the upper surface of the heating box, a sealing groove is provided on the lower surface of the heating box, and a flip assembly is arranged inside the heating box.

[0007] As a further description of the above technical solution:

[0008] The flip assembly includes a connecting groove, which is opened on one side of the heating box. A mounting shell is arranged inside the heating box. A driving motor is fixedly mounted on one side of the mounting shell. The output end of the driving motor is fixedly connected to a driving gear. A shaft is rotatably connected to the middle part of one side of the mounting shell. One end of the shaft is fixedly connected to a driven gear ring. The driving gear and the driven gear ring are meshingly connected.

[0009] As a further description of the above technical solution:

[0010] A first placement net is arranged inside the installation shell, and connection shells are fixedly connected to both sides of the first placement net, one of the connection shells is fixedly connected to the other end of the shaft rod, and the other connection shell is rotatably connected to one side of the inner wall of the installation shell.

[0011] As a further description of the above technical solution:

[0012] Both sides of the first placement net are fixedly connected with fixed shells, and the fixed shells are arranged inside the connecting shells, one of the fixed shells is rotatably connected with a stud inside, one end of the stud is fixedly connected with a knob, and the other fixed shell is fixedly connected with a limit rod inside, and a second placement net is arranged above the first placement net.

[0013] As a further description of the above technical solution:

[0014] Both sides of the second placement net are fixedly connected with connection blocks, one of which has a threaded hole on its lower surface, and the other has a through hole on its lower surface, one of which is threadedly connected to the outside of the stud through the threaded hole, and the other is slidably connected to the outside of the limiting rod through the through hole.

[0015] As a further description of the above technical solution:

[0016] The interior of the heating box is provided with an ejection assembly, and the ejection assembly includes a plurality of slide grooves, and the plurality of slide grooves are respectively opened on both sides of the inner wall of the heating box.

[0017] As a further description of the above technical solution:

[0018] A slide rod is slidably connected inside the slide groove, a stepper motor is fixedly installed on one side of the heating box, and a driving gear is fixedly connected to the output end of the stepper motor.

[0019] As a further description of the above technical solution:

[0020] A fixing block is fixedly connected to one side of the mounting shell, a rack plate is fixedly connected to one side of the fixing block, the rack plate is meshed with the driving gear, and a limiting block is fixedly connected to one side of the rack plate.

[0021] The present invention also provides an annealing method, using the above-mentioned spheroidizing structure annealing equipment for cold working die steel, and the using method is as follows:.

[0022] Step 1: Place the mold steel material on the top of the first placement net, and then turn the knob to close and seal the second placement net with the first placement net;

[0023] Step 2: Turn on the stepper motor 28 again to drive the mounting shell 13 to slide into the interior of the heating box;

[0024] Step 3: Start the hydraulic cylinder to drive the sealing plate to seal the box opening of the heating box;

[0025] Step 4: After the heating tube is preheated, the fan is turned on so that the fan blows the heat of the heating tube to the inner cavity of the heating box;

[0026] Step 5: Restart the driving motor to drive the mold steel clamped and sealed by the second placement net and the first placement net to rotate;

[0027] Step 6: After heating is completed, start the hydraulic cylinder, move the sealing plate upward, open the box opening of the heating box, and then use the stepper motor to push the installation shell out of the interior of the heating box;

[0028] Step 7: Use a cooling device to cool the mold steel inside the removed installation shell.

[0029] The present invention has the following beneficial effects:

[0030] 1. The present invention facilitates uniform heating of various parts of the mold steel by setting the flip assembly, accelerates the heat transfer process inside the mold steel, and facilitates its various surfaces and interior to reach a predetermined heating temperature, thereby reducing the problem of local overheating or underheating. Moreover, by flipping, it is convenient to redistribute and release thermal stress inside the mold steel, thereby reducing fracture and damage caused by thermal stress concentration, helping carbides to be more evenly distributed inside the mold steel, making the spheroidization effect more ideal, facilitating carburization and accumulation of grain boundaries, making intercrystalline connections tighter, and improving the overall performance of the mold steel so that it can reach the temperature required for annealing more quickly.

[0031] 2. The present invention, through the provision of an ejection component, helps to automatically eject the mold steel from the inside of the equipment after the mold steel is heated. There is no need to manually use tools to take the mold steel out of the equipment, thereby facilitating rapid cooling of the mold steel, reducing the risk of scalding caused by manually using tools to push the mold steel material out of the equipment, and improving the safety of the equipment when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention;

[0033] Figure 2 This is a schematic diagram of the chute structure proposed by the present invention;

[0034] Figure 3 This is a schematic diagram of the through-groove structure proposed by the present invention;

[0035] Figure 4 A schematic diagram of the sliding rod structure proposed by the present invention;

[0036] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0037] Figure 6 This is a schematic diagram of the connection shell structure proposed by the present invention;

[0038] Figure 7 This is a schematic diagram of the first placement network structure proposed by the present invention;

[0039] Figure 8 This is a schematic diagram of the connection block structure proposed by the present invention.

[0040] Legend:

[0041] 1. Heating box; 2. Mounting slot; 3. Heating tube; 4. Mounting tube; 5. Fan; 6. Dust blocking plate; 7. Support plate; 8. Hydraulic cylinder; 9. Sealing plate; 10. Through slot; 11. Sealing slot; 12. Connecting slot; 13. Mounting shell; 14. Driving motor; 15. Driving gear; 16. Shaft; 17. Driven gear ring; 18. First placement net; 19. Connecting shell; 20. Fixed shell; 21. Stud; 22. Knob; 23. Limit rod; 24. Second placement net; 25. Connecting block; 26. Slide slot; 27. Slide rod; 28. Stepping motor; 29. ​​Driving gear; 30. Fixed block; 31. Rack plate; 32. Limit block. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] As attached Figure 1-8 As shown, an embodiment of the present invention is: a spheroidizing structure annealing equipment for cold working die steel, comprising a heating box 1, a mounting groove 2 is provided on one side of the inner wall of the heating box 1, a plurality of heating tubes 3 are fixedly installed inside the mounting groove 2, a mounting tube 4 is connected through the lower surface of the heating box 1, a fan 5 is fixedly installed inside the mounting tube 4, a dust blocking plate 6 is fixedly connected to the upper surface of the mounting tube 4, a support plate 7 is fixedly connected to one side of the heating box 1, a hydraulic cylinder 8 is fixedly installed on one side of the heating box 1, a sealing plate 9 is fixedly connected to the output end of the hydraulic cylinder 8, a through groove 10 is provided on the upper surface of the heating box 1, a sealing groove 11 is provided on the lower surface of the heating box 1, a flip assembly is arranged inside the heating box 1, the fan 5 is used for blowing the heat dissipated by the heating tube 3 to the inner cavity of the heating box 1, the dust blocking plate 6 is used for blocking dust when the fan 5 sucks air, the through groove 10 is used for the sliding of the sealing plate 9, and the sealing groove 11 is convenient for accommodating the sealing plate 9, so as to seal the box mouth of the heating box 1.

[0044] As attached Figure 3 As shown, the turning assembly includes a connecting groove 12, which is opened on one side of the heating box 1 to facilitate the passage of the driving motor 14.

[0045] As attached Figure 5As shown, a mounting shell 13 is provided inside the heating box 1, a driving motor 14 is fixedly mounted on one side of the mounting shell 13, a driving gear 15 is fixedly connected to the output end of the driving motor 14, a shaft 16 is rotatably connected to the middle part of one side of the mounting shell 13, a driven gear ring 17 is fixedly connected to one end of the shaft 16, the driving gear 15 and the driven gear ring 17 are meshedly connected, and the driving gear 15 and the driven gear ring 17 are convenient for decelerating the rotation of the shaft 16.

[0046] As attached Figure 7 As shown, a first placement net 18 is provided inside the mounting shell 13, and connecting shells 19 are fixedly connected on both sides of the first placement net 18, one of the connecting shells 19 is fixedly connected to the other end of the shaft 16, and the other connecting shell 19 is rotatably connected to one side of the inner wall of the mounting shell 13, and fixed shells 20 are fixedly connected on both sides of the first placement net 18, and the fixed shells 20 are arranged inside the connecting shell 19, and a stud 21 is rotatably connected inside one of the fixed shells 20, and a knob 22 is fixedly connected to one end of the stud 21, and a limiting rod 23 is fixedly connected inside the other fixed shell 20. The first placement net 18 is used to place mold steel materials, and the connecting shell 19 is used to connect the first placement net 18 with the shaft 16 to facilitate the rotation of the first placement net 18, and the stud 21 is used to drive the connecting block 25 to move, and the limiting rod 23 is convenient for stabilizing the movement of the second placement net 24 under the connection of the connecting block 25.

[0047] As attached Figure 8 As shown, a second placement net 24 is arranged above the first placement net 18, and connecting blocks 25 are fixedly connected to both sides of the second placement net 24, wherein a threaded hole is opened on the lower surface of one of the connecting blocks 25, and a through hole is opened on the lower surface of the other connecting block 25, wherein one of the connecting blocks 25 is threadedly connected to the outside of the stud 21 through the threaded hole, and the other connecting block 25 is slidably connected to the outside of the limiting rod 23 through the through hole, and the second placement net 24 is used to clamp and stabilize the material placed on the first placement net 18, the through hole is used to connect with the limiting rod 23, and the threaded hole is used to connect with the stud 21.

[0048] As attached Figure 3 As shown, an ejection assembly is provided inside the heating box 1, and the ejection assembly includes a plurality of slide grooves 26, and the plurality of slide grooves 26 are respectively opened on both sides of the inner wall of the heating box 1, and the slide grooves 26 facilitate the connection of the slide rod 27, thereby facilitating the stable movement of the installation shell 13.

[0049] As attached Figure 1As shown, a slide rod 27 is slidably connected inside the slide groove 26, a stepper motor 28 is fixedly installed on one side of the heating box 1, and a driving gear 29 is fixedly connected to the output end of the stepper motor 28, and a fixed block 30 is fixedly connected to one side of the mounting shell 13, and a rack plate 31 is fixedly connected to one side of the fixed block 30. The rack plate 31 and the driving gear 29 are meshingly connected, and a limiting block 32 is fixedly connected to one side of the rack plate 31. The driving gear 29 is used to promote the movement of the rack plate 31, and the limiting block 32 is used to limit the moving distance of the rack plate 31.

[0050] The present invention also provides an annealing method, using the above-mentioned spheroidizing structure annealing equipment for cold working die steel, and the using method is as follows:.

[0051] Step 1: Place the mold steel material on the top of the first placement net 18, and then turn the knob 22 to close and seal the second placement net 24 to the first placement net 18;

[0052] Step 2: Turn on the stepper motor 28 again to drive the mounting shell 13 to slide into the interior of the heating box 1;

[0053] Step 3: Start the hydraulic cylinder 8 to drive the sealing plate 9 to seal the box opening of the heating box 1;

[0054] Step 4: After the heating tube 3 is turned on for preheating, the fan 5 is turned on so that the fan 5 blows the heat of the heating tube 3 to the inner cavity of the heating box 1;

[0055] Step 5: Restart the driving motor 14 to drive the mold steel clamped and sealed by the second placement net 24 and the first placement net 18 to rotate;

[0056] Step 6: After the heating is completed, the hydraulic cylinder 8 is started, the sealing plate 9 is moved upward, the box opening of the heating box 1 is opened, and then the stepping motor 28 pushes the mounting shell 13 to move out of the interior of the heating box 1;

[0057] Step seven: cool the mold steel inside the removed installation shell 13 using a cooling device.

[0058] Working principle: When in use, first place the mold steel on the top of the first placement net 18, and then turn the knob 22, the knob 22 drives the stud 21 to rotate, so that the stud 21 drives one of the connecting blocks 25 to slide inside the fixed shell 20 under the action of the threaded hole, so that the connecting block 25 pulls the second placement net 24 close to the top of the first placement net 18, and clamps and tightens the material placed on the first placement net 18;

[0059] When the material is fixed, the stepper motor 28 is started, and its output end drives the driving gear 29 to rotate. Under the action of meshing with the rack plate 31, the rack plate 31 is driven to move. Through the connection of the fixing block 30, the mounting shell 13 is driven to slide into the interior of the heating box 1, so that the slide bar 27 slides inside the slide groove 26. When the mounting shell 13 completely enters the interior of the heating box 1, the hydraulic cylinder 8 is started to drive the sealing plate 9 to slide from the inside of the through groove 10 to the inside of the sealing groove 11, so as to seal the box mouth of the heating box 1. Then, after the heating tube 3 is turned on for preheating, the fan 5 is started, and the fan 5 blows the heat emitted by the heating tube 3, so that the heat fills the inner cavity of the heating box 1 for heating;

[0060] During the heating process, the driving motor 14 is turned on, and its output end drives the driving gear 15 to rotate, thereby driving the driven gear ring 17 to rotate under the action of meshing with the driven gear ring 17, so that the driven gear ring 17 drives the shaft rod 16 to rotate, and the shaft rod 16 drives the first placement net 18 to rotate under the connection of the connecting shell 19. The first placement net 18 and the second placement net 24 are closely attached to the material, so that the material is easily turned over, thereby improving the uniformity of the material during the heating process;

[0061] After heating is completed, the heating tube 3 is closed first, and then the hydraulic cylinder 8 is started to drive the sealing plate 9 to rise, and the box mouth of the heating box 1 is opened. Then, under the start of the stepper motor 28, the mounting shell 13 is pushed out from the inside of the heating box 1 through the connection between the driving gear 29 and the rack plate 31, and then cooled by the cooling equipment.

[0062] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spheroidizing structure annealing device for cold working die steel, comprising a heating box (1), a mounting groove (2) is provided on one side of the inner wall of the heating box (1), a plurality of heating tubes (3) are fixedly installed inside the mounting groove (2), a mounting tube (4) is connected through the lower surface of the heating box (1), a fan (5) is fixedly installed inside the mounting tube (4), a dust blocking plate (6) is fixedly connected to the upper surface of the mounting tube (4), a support plate (7) is fixedly connected to one side of the heating box (1), a hydraulic cylinder (8) is fixedly installed on one side of the heating box (1), a sealing plate (9) is fixedly connected to the output end of the hydraulic cylinder (8), a through groove (10) is provided on the upper surface of the heating box (1), and a sealing groove (11) is provided on the lower surface of the heating box (1), characterized in that: A turning assembly is arranged inside the heating box (1).

2. The spheroidizing structure annealing equipment for cold working die steel according to claim 1, characterized in that: The flip assembly comprises a connection groove (12), the connection groove (12) is opened on one side of the heating box (1), a mounting shell (13) is arranged inside the heating box (1), a driving motor (14) is fixedly mounted on one side of the mounting shell (13), an output end of the driving motor (14) is fixedly connected to a driving gear (15), a shaft (16) is rotatably connected to the middle part of one side of the mounting shell (13), one end of the shaft (16) is fixedly connected to a driven gear ring (17), and the driving gear (15) and the driven gear ring (17) are meshingly connected.

3. The spheroidizing structure annealing equipment for cold working die steel according to claim 2, characterized in that: A first placement net (18) is provided inside the installation shell (13), and connection shells (19) are fixedly connected to both sides of the first placement net (18), one of the connection shells (19) is fixedly connected to the other end of the shaft (16), and the other connection shell (19) is rotatably connected to one side of the inner wall of the installation shell (13).

4. The spheroidizing structure annealing equipment for cold working die steel according to claim 3, characterized in that: Both sides of the first placement net (18) are fixedly connected to a fixing shell (20), and the fixing shell (20) is arranged inside the connection shell (19), one of the fixing shells (20) is rotatably connected to a stud (21), one end of the stud (21) is fixedly connected to a knob (22), and the other fixing shell (20) is fixedly connected to a limit rod (23), and a second placement net (24) is arranged above the first placement net (18).

5. The spheroidizing structure annealing equipment for cold working die steel according to claim 4, characterized in that: Both sides of the second placement net (24) are fixedly connected with connection blocks (25), wherein a threaded hole is provided on the lower surface of one of the connection blocks (25), and a through hole is provided on the lower surface of the other connection block (25), wherein one of the connection blocks (25) is threadedly connected to the outside of the stud (21) through the threaded hole, and the other connection block (25) is slidably connected to the outside of the limiting rod (23) through the through hole.

6. The spheroidizing structure annealing equipment for cold working die steel according to claim 1, characterized in that: An ejection assembly is arranged inside the heating box (1), and the ejection assembly comprises a plurality of slide grooves (26). The plurality of slide grooves (26) are respectively arranged on both sides of the inner wall of the heating box (1).

7. The spheroidizing structure annealing equipment for cold working die steel according to claim 6, characterized in that: The interior of the slide groove (26) is slidably connected to a slide rod (27), a stepper motor (28) is fixedly mounted on one side of the heating box (1), and an output end of the stepper motor (28) is fixedly connected to a driving gear (29).

8. The spheroidizing structure annealing equipment for cold working die steel according to claim 2, characterized in that: A fixing block (30) is fixedly connected to one side of the mounting shell (13), a rack plate (31) is fixedly connected to one side of the fixing block (30), the rack plate (31) is meshingly connected to the driving gear (29), and a limiting block (32) is fixedly connected to one side of the rack plate (31).

9. An annealing method, using the spheroidizing structure annealing equipment for cold working die steel according to any one of claims 1 to 8, characterized in that: Here’s how to use it: Step 1: Place the mold steel material on the top of the first placement net (18), and then turn the knob (22) to close and seal the second placement net (24) and the first placement net (18); Step 2: Turn on the stepper motor 28 again to drive the mounting shell 13 to slide into the interior of the heating box (1); Step 3: Start the hydraulic cylinder (8) to drive the sealing plate (9) to seal the box opening of the heating box (1); Step 4: After the heating tube (3) is turned on for preheating, the fan (5) is turned on so that the fan (5) blows the heat of the heating tube (3) into the inner cavity of the heating box (1); Step 5: restarting the driving motor (14) to drive the mold steel clamped and sealed by the second placement net (24) and the first placement net (18) to rotate; Step 6: After the heating is completed, the hydraulic cylinder (8) is started, the sealing plate (9) is moved upward, the box opening of the heating box (1) is opened, and then the stepping motor (28) pushes the mounting shell (13) out of the interior of the heating box (1); Step 7: Use a cooling device to cool the mold steel inside the removed installation shell (13).

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