An online solution treatment system for high-mirror plastic mold steel

Abstract

The present invention discloses an online solution treatment system for high-mirror plastic mold steel, which specifically relates to the field of mold steel processing technology, including a solution treatment box, a feed pipe is fixedly connected to the top of the solution treatment box, a mold steel conveyor belt is arranged on the top of the feed pipe, and a support frame is fixedly connected to the bottom of the mold steel conveyor belt; a plurality of heating wires are fixedly installed inside the solution treatment box, and an induction heating coil is fixedly installed at the bottom of the inner wall of the solution treatment box. The present invention combines an efficient continuous heating furnace with online transmission, heats up quickly and closely connects each link, greatly improves the processing volume per unit time, induction heating and intelligent control systems ensure that the mold steel is heated evenly and the temperature control is accurate, the semiconductor refrigeration plate of the cooling box uses the Peltier effect for efficient cooling, and cooperates with the internal stainless steel round heat exchange tube and circulating water cooling system to further enhance the cooling effect, stable product quality, and an atmosphere protection system isolates oxygen and prevents oxidation to ensure a smooth surface.

Description

Technical Field

[0001] The invention relates to the technical field of mold steel processing, and more specifically to an online solid solution processing system for high-mirror plastic mold steel. Background Art

[0002] In the field of modern plastic mold manufacturing, the demand for high-mirror plastic mold steel is increasing day by day. High-mirror plastic mold steel plays a vital role in the molding process of plastic products, and its surface quality directly affects the appearance accuracy and smoothness of plastic products.

[0003] The solution treatment of mold steel often adopts a single heating method, such as a resistance heating furnace, which has a slow heating rate and takes a lot of time to heat the mold steel to the required solution temperature, which greatly limits the processing volume per unit time. There is a lack of precise oxygen content control means. Usually, inert gas is simply introduced without real-time monitoring and dynamic regulation mechanisms, making it difficult to ensure a low-oxygen environment in the furnace during the entire solution treatment process. This makes mold steel extremely easy to oxidize at high temperatures, and the surface finish is greatly reduced, which cannot meet the strict surface quality standards required for high-mirror plastic molds. It not only affects the appearance of the product, but may also cause problems such as difficulty in demolding plastic products, reducing production efficiency. At the same time, most solution treatments use natural cooling or simple air cooling, and the cooling rate is difficult to accurately control. Cooling too quickly will cause thermal stress cracks in the mold steel, and cooling too slowly will not be able to fix the ideal organizational structure in time, resulting in poor mechanical properties of the mold steel, which cannot meet the complex force requirements of modern plastic molds, affecting the overall performance and reliability of the mold. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an online solution treatment system for high-mirror plastic mold steel to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an online solution treatment system for high-mirror plastic mold steel, comprising a solution treatment box, a feed pipe is fixedly connected to the top of the solution treatment box, a mold steel conveyor belt is arranged on the top of the feed pipe, and a support frame is fixedly connected to the bottom of the mold steel conveyor belt;

[0006] A plurality of heating wires are fixedly installed inside the solution treatment box, an induction heating coil is fixedly installed at the bottom of the inner wall of the solution treatment box, an oxygen content monitor is fixedly installed at the top of the inner wall of the solution treatment box, a nitrogen tank is arranged at the rear side of the solution treatment box, an air intake pipe is fixedly connected between the solution treatment box and the nitrogen tank, a nitrogen replenishing pipe is fixedly connected at one end of the nitrogen tank, valves are fixedly installed inside the air intake pipe and the nitrogen replenishing pipe, a support seat is fixedly connected to the bottom of the solution treatment box, and multiple cooling mechanisms are arranged on one side of the solution treatment box.

[0007] Preferably, the multiple cooling mechanism comprises a first connecting pipe, the first connecting pipe is fixedly connected to one side of the solution treatment tank, one end of the first connecting pipe is fixedly connected to a heat exchange box, and a plurality of heat dissipation fins are fixedly installed on the top of the heat exchange box.

[0008] Preferably, the cross-sectional shape of the plurality of heat sink fins is set to be L-shaped, the plurality of heat sink fins are all made of nickel-based alloy, the bottoms of the plurality of heat sink fins all penetrate the heat exchange box and extend into the interior of the heat exchange box, and the top of the heat exchange box is fixedly connected with a fixing rod.

[0009] Preferably, a fixing plate is fixedly connected to the top of the fixing rod, and a fan is fixedly installed inside the fixing plate.

[0010] Preferably, one side of the heat exchange box is fixedly connected to a second connecting pipe, solenoid valves are fixedly installed inside the first connecting pipe and the second connecting pipe, one end of the second connecting pipe is fixedly connected to a cooling box, and a heat exchange plate is fixedly connected to the outside of the cooling box.

[0011] Preferably, one side of the heat exchange plate passes through the cooling box and extends into the interior thereof, and a semiconductor refrigeration sheet is fixedly mounted on one side of the heat exchange plate, and one side of the semiconductor refrigeration sheet passes through the heat exchange plate and extends into the interior of the heat exchange plate.

[0012] Preferably, a meandering heat exchange tube is installed inside the cooling box, a circulation tube is fixedly connected to the top of the meandering heat exchange tube, and a circulation box is fixedly installed at one end of the circulation tube.

[0013] Preferably, a water cooling block is fixedly mounted on the top of the circulation box, the bottom of the water cooling block penetrates the circulation box and extends into the interior thereof, a water pump is fixedly mounted on one end of the circulation pipe, and the water pump is fixed inside the circulation box.

[0014] Preferably, one end of the cooling box is fixedly connected to a discharge pipe.

[0015] Preferably, the meandering heat exchange tube is made of stainless steel.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The double heating of the heating wire and the induction heating coil in the solution treatment box can quickly heat the mold steel to the solution temperature. Compared with the traditional single heating method, the heating time is greatly reduced. The whole system is closely connected, and the continuous operation from solution to cooling effectively increases the processing capacity of mold steel per unit time to meet the needs of large-scale production. The induction heating coil accurately controls the heating speed and final temperature of the mold steel to ensure the uniformity of the solution effect. The internal structure of the mold steel is highly homogenized, avoiding the structural defects caused by local overheating or overcooling;

[0018] 2. Continuous supply of nitrogen through nitrogen tanks, combined with real-time monitoring and feedback control by oxygen content monitors, can maintain the oxygen content in the solution treatment box at an extremely low level throughout the solution treatment process, effectively preventing mold steel from oxidizing in high temperature environments, ensuring the surface finish of mold steel, meeting the stringent requirements of high-mirror plastic molds on steel surface quality, reducing subsequent processing steps, and reducing production costs. The feeding system consisting of a mold steel conveyor belt, a matching feed pipe, and a pusher device realizes automated feeding and online solution treatment of mold steel;

[0019] 3. The multiple cooling mechanisms have achieved remarkable results. The nickel-based alloy L-shaped heat dissipation fins on the top of the heat exchange box are combined with forced air cooling by the fan to achieve initial rapid heat dissipation, quickly take away a large amount of heat from the mold steel, and inhibit the generation of thermal stress. The semiconductor refrigeration plate of the cooling box uses the Peltier effect for efficient cooling, and cooperates with the internal stainless steel circular heat exchange tube and circulating water cooling system to further enhance the cooling effect, accurately control the cooling rate of the mold steel, avoid defects such as cracks caused by too fast cooling, ensure that the mold steel obtains ideal organizational structure and mechanical properties, and improve the overall quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a rear structural schematic diagram of the present invention.

[0022] Figure 3 It is a schematic diagram of the local structure of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the connection between the first connecting pipe and the discharge pipe of the present invention.

[0024] Figure 5 For the present invention Figure 3 Schematic diagram of the partial front cross-sectional structure.

[0025] Figure 6 It is a schematic diagram of the front cross-sectional structure of the solution treatment box of the present invention.

[0026] Figure 7 It is a schematic diagram of the top structure of the present invention.

[0027] The accompanying drawings are marked as follows: 1. solution treatment box; 2. feed pipe; 3. mold steel conveyor belt; 4. support frame; 5. heating wire; 6. induction heating coil; 7. oxygen content monitor; 8. nitrogen tank; 9. air inlet pipe; 10. nitrogen replenishing pipe; 11. valve; 12. support seat; 13. first connecting pipe; 14. heat exchange box; 15. cooling fins; 16. fixing rod; 17. fixing plate; 18. fan; 19. second connecting pipe; 20. cooling box; 21. heat exchange plate; 22. semiconductor refrigeration plate; 23. meandering heat exchange tube; 24. circulation pipe; 25. circulation box; 26. water cooling block; 27. water pump; 28. discharge pipe; 29. ​​solenoid valve. DETAILED DESCRIPTION

[0028] 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.

[0029] As attached Figure 1-7 An online solid solution treatment system for high-mirror plastic mold steel shown includes a solid solution treatment box 1, a feed pipe 2 is fixedly connected to the top of the solid solution treatment box 1, a mold steel conveyor belt 3 is arranged on the top of the feed pipe 2, and a support frame 4 is fixedly connected to the bottom of the mold steel conveyor belt 3;

[0030] A plurality of heating wires 5 are fixedly installed inside the solution treatment box 1, an induction heating coil 6 is fixedly installed on the bottom of the inner wall of the solution treatment box 1, an oxygen content monitor 7 is fixedly installed on the top of the inner wall of the solution treatment box 1, a nitrogen tank 8 is arranged on the rear side of the solution treatment box 1, an air intake pipe 9 is fixedly connected between the solution treatment box 1 and the nitrogen tank 8, a nitrogen replenishing pipe 10 is fixedly connected at one end of the nitrogen tank 8, valves 11 are fixedly installed inside the air intake pipe 9 and the nitrogen replenishing pipe 10, a support seat 12 is fixedly connected to the bottom of the solution treatment box 1, and multiple cooling mechanisms are arranged on one side of the solution treatment box 1.

[0031] As attached Figure 1-7As shown, the multiple cooling mechanism includes a first connecting pipe 13, the first connecting pipe 13 is fixedly connected to one side of the solution treatment box 1, one end of the first connecting pipe 13 is fixedly connected to a heat exchange box 14, a plurality of heat dissipating fins 15 are fixedly installed on the top of the heat exchange box 14, the cross-sectional shape of the plurality of heat dissipating fins 15 is set to be L-shaped, the plurality of heat dissipating fins 15 are all made of nickel-based alloy, the bottoms of the plurality of heat dissipating fins 15 all penetrate the heat exchange box 14 and extend to the inside of the heat exchange box 14, a fixing rod 16 is fixedly connected to the top of the heat exchange box 14, a fixing plate 17 is fixedly connected to the top of the fixing rod 16, a fan 18 is fixedly installed inside the fixing plate 17, and the solution is preliminarily dissipated and cooled by air cooling to achieve preliminarily cooling.

[0032] As attached Figure 1 , 2 As shown in Figures 3, 4, 5 and 7, a second connecting pipe 19 is fixedly connected to one side of the heat exchange box 14, and electromagnetic valves 29 are fixedly installed inside the first connecting pipe 13 and the second connecting pipe 19, and one end of the second connecting pipe 19 is fixedly connected to a cooling box 20, and a heat exchange plate 21 is fixedly connected to the outside of the cooling box 20, and one side of the heat exchange plate 21 penetrates the cooling box 20 and extends to the inside thereof, and a semiconductor refrigeration sheet 22 is fixedly installed on one side of the heat exchange plate 21, and one side of the semiconductor refrigeration sheet 22 penetrates the heat exchange plate 21 and extends to the inside of the heat exchange plate 21, so that the cooling effect is improved by the semiconductor refrigeration sheet 22.

[0033] As attached Figure 1 , 2 As shown in Figures 3, 4, 5 and 7, a meandering heat exchange tube 23 is installed inside the cooling box 20, a circulation tube 24 is fixedly connected to the top of the meandering heat exchange tube 23, a circulation box 25 is fixedly installed at one end of the circulation tube 24, a water cooling block 26 is fixedly installed on the top of the circulation box 25, the bottom of the water cooling block 26 passes through the circulation box 25 and extends to the inside thereof, a water pump 27 is fixedly installed at one end of the circulation tube 24, the water pump 27 is fixed inside the circulation box 25, so that water flows quickly to perform heat exchange cooling on the solid solution mold steel liquid.

[0034] As attached Figure 1-5 As shown, one end of the cooling box 20 is fixedly connected to a discharge pipe 28 to facilitate the solid solution mold steel liquid to enter the subsequent processing link.

[0035] As attached Figure 5 As shown, the meandering heat exchange tube 23 is made of stainless steel, which is convenient for rapid heat exchange with the solution mold steel liquid.

[0036] Working principle of the present invention: the high-mirror plastic mold steel to be solution treated is placed on a mold steel conveyor belt 3, which is supported and stabilized by a support frame 4 and driven by a power device, which is not shown in detail in the figure below. The mold steel moves toward the solution treatment box 1 along the conveyor belt. When it reaches the position above the feed pipe 2, the mold steel can be sent into the solution treatment box 1 through the feed pipe 2 through a suitable mechanical structure such as a pushing device, as needed. The multiple heating wires 5 and induction heating coils 6 inside the solution treatment box 1 work together. The heating wires 5 first preheat the air in the box, and the induction heating coils 6 use the principle of electromagnetic induction to make the mold steel itself heat up quickly. The dual heating method can ensure that the mold steel is quickly heated to the temperature range required for solution treatment. The induction heating coils 6 can accurately control the power, and according to factors such as the material and size of the mold steel, the heating speed and final temperature of the mold steel can be accurately controlled to ensure the uniformity of the solution effect.

[0037] At the same time, the nitrogen tank 8 on the rear side of the solution treatment box 1 plays an atmospheric protection role. The valve 11 on the air inlet pipe 9 is opened, and the high-purity nitrogen in the nitrogen tank 8 is continuously filled into the solution treatment box 1 through the air inlet pipe 9, forming an inert protective atmosphere in the box to prevent the mold steel from oxidizing under high temperature environment. The oxygen content monitor 7 monitors the oxygen content in the box in real time. Once the oxygen content rises, it indicates that there may be nitrogen leakage or air infiltration, etc., and the signal can be fed back in time. The nitrogen intake volume is further adjusted through the control system to ensure that the oxygen content in the box is maintained at an extremely low level, thereby ensuring the surface quality of the mold steel and meeting the high mirror requirements;

[0038] After the solution treatment is completed, the mold steel needs to be cooled quickly to fix the organizational structure and obtain ideal performance. First, the electromagnetic valve 29 on the first connecting pipe 13 is opened, and the heat carried by the mold steel is transferred to the heat exchange box 14 through the first connecting pipe 13. The multiple L-shaped heat dissipation fins 15 on the top of the heat exchange box 14 play a role. The heat exchange fins 15 are made of nickel-based alloy and have excellent high temperature resistance and heat dissipation performance. On the one hand, the heat is radiated to the surrounding environment by the heat dissipation fins 15 themselves; on the other hand, the fan 18 inside the fixed plate 17 on the fixed rod 16 is started to generate forced airflow, which accelerates the heat dissipation from the heat dissipation fins 15 to the air to achieve preliminary cooling. The mold steel fluid after solution continues to enter the cooling box 20 through the second connecting pipe 19. The heat exchange plate 21 outside the cooling box 20 participates in heat exchange, and the semiconductor refrigeration plate 22 on one side thereof is powered on to work. The Peltier effect is used to rapidly reduce the temperature on one side of the heat exchange plate 21, and the heat in the heat medium is efficiently absorbed for further cooling.

[0039] At the same time, the meandering heat exchange tube 23 inside the cooling box 20 is also playing a cooling role. The meandering heat exchange tube 23 is made of stainless steel, can withstand a certain temperature and has good thermal conductivity. The water cooling block 26 on the top of the circulation box 25 drives the coolant in the circulation tube 24 to circulate through the water pump 27. When the coolant flows in the meandering heat exchange tube 23, it continuously absorbs the heat of the heat medium, and returns to the circulation box 25 after its own temperature rises. After being cooled by the water cooling block 26, it circulates again, continuously taking away heat and enhancing the cooling effect. Finally, the cooled mold steel can leave the system through the discharge pipe 28 and enter the subsequent processing link.

[0040] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0041] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0042] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. An online solution treatment system for high-mirror plastic mold steel, comprising a solution treatment box (1), characterized in that: The top of the solution treatment box (1) is fixedly connected to a feed pipe (2), the top of the feed pipe (2) is provided with a mold steel conveyor belt (3), and the bottom of the mold steel conveyor belt (3) is fixedly connected to a support frame (4); A plurality of heating wires (5) are fixedly installed inside the solution treatment box (1), an induction heating coil (6) is fixedly installed at the bottom of the inner wall of the solution treatment box (1), an oxygen content monitor (7) is fixedly installed at the top of the inner wall of the solution treatment box (1), a nitrogen tank (8) is arranged at the rear side of the solution treatment box (1), an air intake pipe (9) is fixedly connected between the solution treatment box (1) and the nitrogen tank (8), a nitrogen replenishing pipe (10) is fixedly connected at one end of the nitrogen tank (8), valves (11) are fixedly installed inside the air intake pipe (9) and the nitrogen replenishing pipe (10), a support seat (12) is fixedly connected to the bottom of the solution treatment box (1), and multiple cooling mechanisms are arranged on one side of the solution treatment box (1).

2. The online solution treatment system for high-mirror plastic mold steel according to claim 1 is characterized by: The multiple cooling mechanism comprises a first connecting pipe (13), wherein the first connecting pipe (13) is fixedly connected to one side of a solution treatment tank (1), and one end of the first connecting pipe (13) is fixedly connected to a heat exchange tank (14), and a plurality of heat dissipation fins (15) are fixedly installed on the top of the heat exchange tank (14).

3. The online solution treatment system for high-mirror plastic mold steel according to claim 2 is characterized by: The cross-sectional shape of the plurality of heat dissipation fins (15) is set to be L-shaped, the plurality of heat dissipation fins (15) are all made of nickel-based alloy, the bottoms of the plurality of heat dissipation fins (15) all penetrate the heat exchange box (14) and extend into the interior of the heat exchange box (14), and the top of the heat exchange box (14) is fixedly connected with a fixing rod (16).

4. The online solution treatment system for high-mirror plastic mold steel according to claim 3 is characterized by: A fixing plate (17) is fixedly connected to the top of the fixing rod (16), and a fan (18) is fixedly installed inside the fixing plate (17).

5. The online solution treatment system for high-mirror plastic mold steel according to claim 3 is characterized by: One side of the heat exchange box (14) is fixedly connected to a second connecting pipe (19), solenoid valves (29) are fixedly installed inside the first connecting pipe (13) and the second connecting pipe (19), one end of the second connecting pipe (19) is fixedly connected to a cooling box (20), and the outside of the cooling box (20) is fixedly connected to a heat exchange plate (21).

6. The online solution treatment system for high-mirror plastic mold steel according to claim 5 is characterized by: One side of the heat exchange plate (21) passes through the cooling box (20) and extends into the interior thereof, and one side of the heat exchange plate (21) is fixedly mounted with a semiconductor refrigeration plate (22), and one side of the semiconductor refrigeration plate (22) passes through the heat exchange plate (21) and extends into the interior of the heat exchange plate (21).

7. The online solution treatment system for high-mirror plastic mold steel according to claim 5, characterized in that: A meandering heat exchange tube (23) is installed inside the cooling box (20), a circulation tube (24) is fixedly connected to the top of the meandering heat exchange tube (23), and a circulation box (25) is fixedly installed at one end of the circulation tube (24).

8. The online solution treatment system for high-mirror plastic mold steel according to claim 7, characterized in that: A water cooling block (26) is fixedly mounted on the top of the circulation box (25), and the bottom of the water cooling block (26) passes through the circulation box (25) and extends into the interior thereof; a water pump (27) is fixedly mounted on one end of the circulation pipe (24), and the water pump (27) is fixed inside the circulation box (25).

9. The online solution treatment system for high-mirror plastic mold steel according to claim 5, characterized in that: One end of the cooling box (20) is fixedly connected to a discharge pipe (28).

10. The online solution treatment system for high-mirror plastic mold steel according to claim 7, characterized in that: The meandering heat exchange tube (23) is made of stainless steel.

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