Temperature adjusting device for hot pressing die

Abstract

The utility model discloses a temperature adjusting device for a hot-pressing die, which relates to the technical field of die temperature adjustment, and particularly comprises a sixth connecting pipe, one end of which is respectively connected with one end of a second connecting pipe and one end of a third connecting pipe; the other end of the radiator is connected with an inlet of the circulating pump through the first connecting pipe; the other end of the third connecting pipe is connected with a heating oil furnace, the heating oil furnace is further connected with an inlet of a circulating pump through a fourth connecting pipe, a fifth connecting pipe is arranged on an outlet of the circulating pump, one end of a heat exchange part is connected with a sixth connecting pipe, and the other end of the heat exchange part is connected with the fifth connecting pipe. The second connecting pipe, the third connecting pipe, the first connecting pipe and the fourth connecting pipe are respectively provided with an electric control valve. When in use, the mold heating device not only has high mold heating speed, but also has heat preservation capability, and can dissipate heat when the mold needs to be cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of mold temperature regulation, and specifically relates to a temperature regulation device for a hot pressing mold. Background Technique

[0002] Hot pressing molding refers to a molding process in which heat energy is used to thermally process materials, and pressure is used as an auxiliary means to make the materials have a certain fluidity and deformation ability, so as to obtain the required shape and performance. Graphite powder hot pressing molding is a common hot pressing molding process, which can be used to manufacture high-precision parts such as graphite anodes and graphite electrodes.

[0003] In the prior art, graphite raw materials are poured into a molding mold (as shown in Figure 4 and Figure 2 ), and then driven by a hydraulic press, the die head extends into the mold to press the graphite into shape. However, in the prior art, when in use, the graphite molding mold does not have a cooling function or the cooling function is rough, and the temperature cannot be accurately controlled, resulting in low production efficiency or defective products, that is, the graphite is prone to internal cracks. Therefore, we propose a temperature regulation device for a hot pressing mold to solve the above technical problems. Content of the Utility Model

[0004] In view of the deficiency that the temperature control of the existing mold is not accurate enough, the utility model provides a temperature regulation device for a hot pressing mold, which has the advantages of heating the mold and being able to cool down slowly when the mold cools down, and solves the problems raised in the above background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: Design a temperature regulation device for a hot pressing mold, including a sixth connecting pipe, one end of the sixth connecting pipe is respectively connected to one end of a second connecting pipe and a third connecting pipe;

[0006] The other end of the second connecting pipe is connected to one end of a radiator, and the other end of the radiator is connected to the inlet of a circulation pump through a first connecting pipe; the other end of the third connecting pipe is connected to a heating oil furnace, and the heating oil furnace is also connected to the inlet of the circulation pump through a fourth connecting pipe, and a fifth connecting pipe is provided at the outlet of the circulation pump;

[0007] It also includes a heat exchange part arranged outside the mold, one end of the heat exchange part is connected to the sixth connecting pipe, and the other end of the heat exchange part is connected to the fifth connecting pipe; wherein, electric control valves are respectively arranged on the second connecting pipe, the third connecting pipe, the first connecting pipe and the fourth connecting pipe, and the circulation pump and the electric control valves are respectively electrically connected to a control part.

[0008] Preferably, the heat exchange part includes:

[0009] Two arc-shaped outer shells, and both ends of the two arc-shaped outer shells are connected by locking parts;

[0010] Two heat exchange tubes are respectively bent and arranged on the inner surface of the arc-shaped housing, and the heat exchange tubes are closely attached to the mold surface.

[0011] Wherein, one end of each heat exchange tube is connected with a seventh connecting tube, and the seventh connecting tubes are respectively connected with the sixth connecting tube. The other end of each heat exchange tube is connected with an eighth connecting tube, and the eighth connecting tube is connected with the fifth connecting tube.

[0012] Preferably, the heating oil furnace includes a heating barrel, and the bottom of the heating barrel is installed on the base; a cavity is provided at the top of the base, and a heater for heating the heating barrel is provided in the cavity.

[0013] Preferably, a blowing fan is provided on one side of the radiator, and both the blowing fan and the radiator are installed in a protective cover with openings at both ends.

[0014] Preferably, the control part includes a control cabinet, a controller is provided in the control cabinet, and the controller is electrically connected to the circulation pump, the electric control valve, the heater, and the blowing fan respectively;

[0015] The controller is also electrically connected to a first temperature sensor and a second temperature sensor respectively. The second temperature sensor is arranged on the surface of the heating barrel, and the first temperature sensor is arranged between the heat exchange tubes. The first temperature sensor is used to detect the mold temperature.

[0016] Preferably, the protective cover, the circulation pump, the base, and the control cabinet are all arranged on the support.

[0017] Preferably, the locking part includes connecting seats respectively arranged at the edges of the arc-shaped housing, and the two connected connecting seats are connected by bolts.

[0018] Preferably, an oil storage tank is installed on the first connecting tube.

[0019] Preferably, a heat insulation layer is provided on the inner surface of each arc-shaped housing.

[0020] Compared with the prior art, when the present utility model is in use, first, the circulation pump can drive the hot oil in the heating barrel to heat and keep warm the mold. When the mold needs to be cooled, only the connecting tube communicating with the heating barrel needs to be blocked, and the connecting tube communicating with the radiator is made to conduct, and the circulated hot oil can be cooled through the radiator, so as to cool the mold. It not only has a fast heating speed for the mold, but also has a heat preservation ability, and can dissipate heat when the mold needs to be cooled. Description of the Drawings

[0021] Figure 1 Structural Schematic of the Present Utility Model Figure 1 .

[0022] Figure 2 Structural Schematic of the Present Utility ModelFigure 2 .

[0023] Figure 3 It is the front view of the utility model.

[0024] Figure 4 Schematic diagram of graphite forming die.

[0025] In the figure: 1. heating barrel; 2. oil storage tank; 3. first connecting pipe; 4. fourth connecting pipe; 5. circulating pump; 6. fifth connecting pipe; 7. second connecting pipe; 8. third connecting pipe; 9. radiator; 10. electric control valve; 11. sixth connecting pipe; 12. seventh connecting pipe; 13. eighth connecting pipe; 14. arc-shaped shell; 15. connecting seat; 16. heat exchange pipe; 17. insulation layer; 18. first temperature sensor; 19. protective cover; 20. blowing fan; 21. support; 22. heater; 23. base; 24. second temperature sensor; 25. control cabinet; 26. operation screen. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 3 The utility model provides a technical solution: a temperature regulating device for a hot pressing mold, including a heat exchange part, such as Figure 2 As shown, the heat exchange part is arranged on the surface of the mold, so that the temperature of the mold can be directly transferred to the heat exchange part. The specific structure of the heat exchange part includes two arc-shaped shells 14, and a heat exchange tube 16 is bent on the inner surface of each arc-shaped shell 14. The heat exchange tube 16 is specifically bent in an "S" shape. The heat exchange tube 16 is close to the mold surface, so that the heat exchange tube 16 can directly contact the mold surface, thereby achieving heat transfer. Figure 1 and Figure 2 As shown, one end of each heat exchange tube 16 is connected to the seventh connecting tube 12 , and the other end of each heat exchange tube 16 is connected to the eighth connecting tube 13 .

[0028] Here is a brief description of the graphite pressing process. In order to improve the application performance of graphite and meet specific usage requirements, the graphite raw materials need to be pressed into columns or blocks, such as Figure 4As shown in the figure, the mold is actually a steel cylinder. The graphite raw material is poured into the mold, and then the die head is driven by a hydraulic press to align with the mold for pressing. In this application, the arc-shaped shell 14 is clamped outside the mold, so that the heat exchange tube 16 is closely attached to the surface of the mold. Then, the two ends of the two arc-shaped shells 14 are respectively connected and fastened by locking parts. A heat insulation layer 17 is provided on the inner wall of the arc-shaped shell 14. The heat insulation layer 17 is one of a heat insulation ceramic plate, a heat insulation board or a heat insulation cotton. The heat exchange tube 16 is actually arranged on the heat insulation layer 17, so as to prevent the heat of the heat exchange tube from being transferred to the outside;

[0029] The arc-shaped shell 14 should be convenient to disassemble, so the locking parts should also be convenient to disassemble. The specific structure of the locking parts includes connecting seats 15 respectively arranged at the edges of the arc-shaped shell 14. The two connected connecting seats 15 are connected by bolts. When the arc-shaped shell 14 needs to be disassembled, only need to loosen the bolts, and the arc-shaped shell 14 can be separated from the surface of the mold.

[0030] Furthermore, this application also includes a circulation pipeline for circulating oil. The circulation pipeline includes a sixth connecting pipe 11. As Figure 1 shown, a seventh connecting pipe 12 is connected to the sixth connecting pipe 11. One end of the sixth connecting pipe 11 is respectively connected to one ends of a second connecting pipe 7 and a third connecting pipe 8. The other end of the second connecting pipe 7 is connected to one end of a radiator 9. The other end of the radiator 9 is connected to the inlet of a circulation pump 5 through a first connecting pipe 3;

[0031] The other end of the third connecting pipe 8 is connected to a heating oil furnace. There is circulating oil in the heating oil furnace. The heating oil furnace heats the circulating oil to the required temperature. The heating oil furnace is also connected to the inlet of the circulation pump 5 through a fourth connecting pipe 4. A fifth connecting pipe 6 is provided at the outlet of the circulation pump 5. As Figure 1 shown, an eighth connecting pipe 13 is connected to the fifth connecting pipe 6;

[0032] As Figure 1 shown, electric control valves 10 are respectively provided on the second connecting pipe 7, the third connecting pipe 8, the first connecting pipe 3 and the fourth connecting pipe 4. The circulation pump 5 and the electric control valves 10 are respectively electrically connected to the control part. The following is a specific description of the circulation process;

[0033] 1. The electric control valves 10 on the third connecting pipe 8, the second connecting pipe 7, the first connecting pipe 3 and the fourth connecting pipe 4 are respectively numbered as valve A, valve B, valve C and valve D;

[0034] 2. When the mold needs to be heated, valve B and valve C are closed at this time, valve A and valve D are opened. The circulating oil passes through the heating oil furnace, the fourth connecting pipe 4, the circulating pump 5, the fifth connecting pipe 6, the eighth connecting pipe 13, the heat exchange pipe 16, the seventh connecting pipe 12, and the sixth connecting pipe 11 in sequence. Finally, the circulating oil passing through the sixth connecting pipe 11 is recycled into the heating oil furnace through the third connecting pipe 8 again. Circulating like this, the circulating oil can heat the mold and can also keep it warm;

[0035] 3. When the mold needs to be cooled, valve B and valve C are opened at this time, valve A and valve D are closed. At this time, the circulating oil no longer passes through the heating oil furnace, but passes through the heat exchange pipe 16, the seventh connecting pipe 12, the sixth connecting pipe 11, the second connecting pipe 7, the radiator 9, the first connecting pipe 3, the circulating pump 5, and the fifth connecting pipe 6, the eighth connecting pipe 13 in sequence and circulates like this. The circulating oil takes away heat when passing through the mold and then is cooled by the radiator 9. The radiator is a finned tube radiator;

[0036] It should be noted that this cooling process is slow rather than rapid cooling. Because the arc-shaped outer shell 14 is included on the mold surface, the mold has a certain heat preservation effect. Through the cooperation of the radiator 9 and the fan, the surface of the mold can be slowly cooled. For example, it is first cooled to X, kept warm for a period of time and then cooled to Y, and so on, and finally cooled to the set temperature, so as to avoid the problem that the mold directly transfers heat outward and the heat dissipation cannot be controlled; at the same time, the circulating oil can pass through the surface of the grinding tool evenly, so that the mold can be cooled evenly and the temperature of the mold can be kept uniform;

[0037] It should be emphasized that when the mold is cooled, the circulating oil in each pipeline will be cooled by the radiator. At this time, the temperature of the circulating oil is lower than the temperature of the heating oil furnace. Since the oil in the pipeline is smaller in volume than the oil in the heating oil furnace, that is, compared with the entire volume of the oil in the heating oil furnace, the oil used for cooling accounts for a very small proportion. Therefore, when switching to heating the mold, the cooled oil will not have a great impact on the temperature of the entire oil when it enters the heating oil furnace.

[0038] Furthermore, as Figure 3 shown, a blower fan 20 is provided on one side of the radiator 9. The blower fan 20 and the radiator 9 are both installed in the protective cover 19 with openings at both ends. The provided protective cover 19 can not only protect the radiator 9, but also gather the wind blown out by the blower fan, so that the wind blown out by the blower fan directly blows on the radiator 9, accelerating the heat dissipation effect. Protective nets are installed at both ends of the protective cover 19, which can prevent foreign objects from entering.

[0039] Furthermore, the present application also proposes the specific structure of the heating oil furnace. As Figure 1 shown, the heating oil furnace includes a heating barrel 1, and the bottom of the heating barrel 1 is installed on the base 23; AsFigure 3 As shown, a cavity (not labeled in the figure) is provided at the top of the base 23. A heater 22 for heating the heating barrel 1 is provided inside the cavity. The heater 22 is a heating resistor or an electromagnetic heater. In actual use, a detachable lid is provided at the top of the heating barrel 1;

[0040] As Figure 1 and Figure 2 shown, the third connecting pipe 8 is arranged at a high position on the side of the heating barrel 1, and the fourth connecting pipe 4 is arranged at the bottom of the side of the heating barrel 1.

[0041] Furthermore, the control part includes a control cabinet 25. A controller is provided inside the control cabinet 25. The controller is a PLC logic controller, a mainframe or a PCB control board. The controller is electrically connected to the circulation pump 5, the electric control valve 10, the heater 22, and the blower fan 20 respectively. The controller is also electrically connected to the operation screen 26 and the operation buttons. The operation screen 26 and the operation buttons are arranged on the surface of the control cabinet 25. The operation buttons include start-stop buttons, buttons for respectively controlling heating and cooling, etc.;

[0042] The controller is also electrically connected to a first temperature sensor 18 and a second temperature sensor 24 respectively. The second temperature sensor 24 is arranged on the surface of the heating barrel 1. As Figure 1 shown, the first temperature sensor 18 is arranged between the heat exchange pipes 16. Here, the first temperature sensor 18 is used to detect the temperature of the mold, so that the temperature of the mold is monitored by the first temperature sensor 18 at all times. The second temperature sensor 24 provided is used to monitor the oil temperature, so that the circulating oil can be stabilized at the set temperature. The electrical connection in the control part is connected by wires and signal lines, so as to realize the transmission of signals and electric energy.

[0043] Based on the above embodiments, it can be further optimized. The protective cover 19, the circulation pump 5, the base 23, and the control cabinet 25 are all arranged on the support 21. Support pads or universal wheels can be arranged at the four corners of the bottom of the support 21.

[0044] Based on the above embodiments, it can be further optimized. An oil storage tank 2 is installed on the first connecting pipe 3. As Figure 1 shown, the oil storage tank 2 is used to store a small amount of circulating oil, which is used for the circulation pump to circulate and use, so as to avoid the circulation pump from idling.

[0045] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0046] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature regulating device for a hot pressing die, comprising a sixth connecting pipe (11), characterized in that, One end of the sixth connecting pipe (11) is connected to one end of the second connecting pipe (7) and the third connecting pipe (8) respectively; The other end of the second connecting pipe (7) is connected to one end of the radiator (9), and the other end of the radiator (9) is connected to the inlet of the circulation pump (5) through the first connecting pipe (3); The other end of the third connecting pipe (8) is connected to the heating oil furnace, and the heating oil furnace is also connected to the inlet of the circulation pump (5) through the fourth connecting pipe (4). A fifth connecting pipe (6) is provided at the outlet of the circulation pump (5); It further includes a heat exchange part arranged outside the mold. One end of the heat exchange part is connected to the sixth connecting pipe (11), and the other end of the heat exchange part is connected to the fifth connecting pipe (6); Among them, electric control valves (10) are respectively provided on the second connecting pipe (7), the third connecting pipe (8), the first connecting pipe (3), and the fourth connecting pipe (4), and the circulation pump (5) and the electric control valve (10) are respectively electrically connected to the control part.

2. The temperature adjustment device for a hot pressing die according to claim 1, characterized in that, The heat exchange part includes: Two arc-shaped outer shells (14), and both ends of the two arc-shaped outer shells (14) are connected through locking parts; Two heat exchange pipes (16), and the two heat exchange pipes (16) are respectively bent and arranged on the inner surface of the arc-shaped outer shell (14), and the heat exchange pipes (16) are closely attached to the mold surface; Among them, one end of each heat exchange pipe (16) is connected with a seventh connecting pipe (12), and the seventh connecting pipe (12) is respectively connected to the sixth connecting pipe (11). The other end of each heat exchange pipe (16) is connected with an eighth connecting pipe (13), and the eighth connecting pipe (13) is connected to the fifth connecting pipe (6).

3. The temperature adjusting device for a hot pressing die according to claim 2, characterized in that, The heating oil furnace includes a heating barrel (1), and the bottom of the heating barrel (1) is installed on the base (23); a cavity is provided at the top of the base (23), and a heater (22) for heating the heating barrel (1) is provided in the cavity.

4. The temperature adjustment device for a hot pressing die according to claim 3, characterized in that, A blower fan (20) is provided on one side of the radiator (9), and both the blower fan (20) and the radiator (9) are installed in a protective cover (19) with openings at both ends.

5. The temperature adjustment device for a hot pressing mold according to claim 4, characterized in that, The control part includes a control cabinet (25), and a controller is provided in the control cabinet (25). The controller is respectively electrically connected to the circulation pump (5), the electric control valve (10), the heater (22), and the blower fan (20); The controller is also respectively electrically connected to a first temperature sensor (18) and a second temperature sensor (24). The second temperature sensor (24) is arranged on the surface of the heating barrel (1), and the first temperature sensor (18) is arranged between the heat exchange pipes (16). The first temperature sensor (18) is used to detect the mold temperature.

6. The temperature adjusting device for a hot pressing die according to claim 5, characterized in that, The protective cover (19), the circulation pump (5), the base (23), and the control cabinet (25) are all arranged on the support (21).

7. The temperature adjustment device for a hot pressing mold according to any one of claims 2-6, characterized in that, The locking part includes connection seats (15) respectively arranged at the edges of the arc-shaped outer shell (14), and the two connected connection seats (15) are connected by bolts.

8. The temperature adjustment device for a hot pressing mold according to any one of claims 1-6, characterized in that, An oil storage tank (2) is installed on the first connecting pipe (3).

9. The temperature adjustment device for a hot pressing die according to claim 2, characterized in that, A heat insulation layer (17) is provided on the inner surface of each arc-shaped outer shell (14).

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