Hot pressing die preheating device

Abstract

The utility model provides a preheating device for a hot-pressing die, which relates to the technical field of preheating devices and comprises a heat supply box and a metal containing tank, two vent holes are symmetrically formed in the left side wall and the right side wall of the heat supply box, and an air duct is fixedly mounted in the heat supply box and located between the two vent holes; the air duct is concentrically sleeved and matched with the metal containing tank; a horizontally-arranged containing disc is installed on the right side of the heat supply box, a horizontally-arranged bearing plate is welded to the upper portion of the top end of the containing disc, and the bearing plate is used for bearing and placing a hot-pressing mold. The right ventilation hole is opposite to the hot-pressing mold at a left-right interval; the draught fan is used for blowing waste heat of the spiral coil to the hot-pressing mold. The air duct and the metal medium tank jointly form a waste heat recycling mechanism, the waste heat recycling mechanism can blow waste heat emitted by the spiral coil and the metal medium tank to the hot-pressing die, the outer surface of the hot-pressing die is heated, and the heat utilization rate of the whole device can be indirectly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of preheating devices, in particular to a hot pressing die preheating device. Background Art

[0002] Before the hot pressing mold is put into use, it needs to be preheated to avoid the material being absorbed by the mold and causing uneven hot and cold parts of the material and thus inconsistent deformation. When performing residual heat operations on the hot pressing mold, a special hot pressing mold preheating device is required.

[0003] Existing devices that use high-temperature circulating media to preheat hot pressing molds often lack a mechanism for recycling waste heat, resulting in heat not being reasonably and effectively utilized in the heating and temperature-raising components and being directly lost and wasted, lowering the overall heat utilization rate of the device. Utility Model Content

[0004] In view of this, the utility model provides a hot pressing mold preheating device to at least to some extent solve the problem that the preheating device lacks a mechanism for recycling waste heat, resulting in the heat being directly lost and wasted in the heating and temperature-raising components without being reasonably and effectively utilized.

[0005] The technical solution proposed by the utility model is: a hot pressing mold preheating device, specifically comprising a heat supply box and a metal container, wherein a transversely arranged metal container is installed at the inner center of the heat supply box, and a spiral coil is installed on the metal container;

[0006] Two ventilation holes are symmetrically provided on the left and right side walls of the heat supply box, and a wind tube is fixedly installed inside the heat supply box between the two ventilation holes; the wind tube is concentrically inserted and matched with the metal container; a fan is installed on the left side wall of the heat supply box at the position of the ventilation hole by screw locking, and the fan, the wind tube and the ventilation hole are concentrically arranged;

[0007] A horizontally arranged receiving tray is installed on the right side of the heat supply box, and a horizontally arranged supporting plate is welded above the top of the receiving tray, and the supporting plate is used to support and place the hot pressing mold; the ventilation holes on the right side are directly opposite to the hot pressing mold on the left and right sides; the fan is used to blow the waste heat of the spiral coil onto the hot pressing mold.

[0008] Furthermore,

[0009] A circulation pump is fixedly installed on the bottom plate of the heat supply box, an L-shaped conduit is connected between the water inlet pipe of the circulation pump and the left end of the metal container, and two medium conduits are welded through the right side wall of the heat supply box at intervals, wherein the tail end of the upper medium conduit is fixedly connected to the right end of the metal container by screw locking;

[0010] The tail end of the lower medium conduit is connected to the water outlet pipe of the circulation pump.

[0011] Furthermore,

[0012] A tripod bracket is welded in the ventilation hole on the right side, and the upper medium conduit is penetrated and welded to the middle part of the tripod bracket to be fixed together.

[0013] Furthermore,

[0014] The head ends of the two medium conduits are connected with hoses, and the head ends of the two hoses are respectively connected with an inlet and an outlet on the hot pressing mold for the heating medium to enter and exit.

[0015] Furthermore,

[0016] A controller is installed on the top of the heat supply box, and two insulating wire tubes are installed on the top plate of the heat supply box through screw locking, and the first and last ends of the spiral coil are respectively fixedly connected to the bottom ends of the two insulating wire tubes;

[0017] Conducting wires are passed through the two insulating wire tubes, the tail ends of the conducting wires are electrically connected to the spiral coil, and the head ends of the conducting wires are electrically connected to the controller.

[0018] Furthermore,

[0019] The air duct as a whole is formed by connecting two semicircular tubes at the front and rear, and the left and right ends of the two semicircular tubes are fixedly connected to the left and right side walls of the heat supply box by screw locking.

[0020] Furthermore,

[0021] The L-shaped conduit and the two insulating wire tubes are all penetrated and matched with the circumferential side wall of the wind cylinder.

[0022] The utility model provides a hot pressing mold preheating device, which has the following beneficial effects:

[0023] When the utility model is in use, the air duct and the metal medium tank together form a waste heat recovery and utilization mechanism, and an annular air duct is formed between the air duct and the metal medium tank. The fan can blow the waste heat emitted by the spiral coil and the metal medium tank onto the hot pressing mold through the annular air duct, and heat the outer surface of the hot pressing mold. Compared with the prior art, it can avoid the direct loss and waste of heat that is not reasonably and effectively utilized on the heating and heating components, which helps to indirectly improve the overall heat utilization rate of the device.

[0024] In addition, the receiving tray is used to receive the heating medium leaked from the hot pressing mold and the two medium conduits when the two hoses on the hot pressing mold and the two medium conduits are disassembled after the heating operation is completed, so as to avoid the leaked heating medium from being directly scattered and poured onto the ground or the workbench, causing waste and pollution, which helps to reduce the consumption of the heating medium and saves the trouble of subsequent additional cleaning of the ground or the workbench.

[0025] In addition, the waste heat recovery mechanism can blow and heat the outer surface of the hot pressing mold, and the heating medium transported by the circulating pump can circulate and heat the inside of the hot pressing mold. This enables the hot pressing mold to receive internal and external composite double heating, which can effectively improve the penetration rate of heat on the hot pressing mold, reduce the time required for the hot pressing mold to be fully heated, and improve the heating efficiency of the preheating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0027] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0028] In the attached picture:

[0029] Figure 1 The overall front side structural schematic diagram of the utility model is shown;

[0030] Figure 2 The overall rear side structure schematic diagram of the utility model is shown;

[0031] Figure 3 The schematic diagram of the inner structure of the heat supply box of the utility model is shown;

[0032] Figure 4 The schematic diagram of the installation position of the circulation pump of the utility model is shown;

[0033] Figure 5 The schematic diagram of the inner structure of the air duct of the utility model is shown;

[0034] Figure 6 The schematic diagram of the structure of the metal container of the utility model is shown;

[0035] Reference numerals list

[0036] 1. heat supply box; 101. tripod bracket; 102. medium duct; 103. air duct;

[0037] 2. Receive tray; 201. Support plate;

[0038] 3. Hot pressing mold;

[0039] 4. Controller; 401. Insulated wire tube; 402. Spiral coil;

[0040] 5. Fan;

[0041] 6. Circulation pump;

[0042] 7. Metal containers. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of 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.

[0044] Please refer to Figures 1 to 6 ;

[0045] Embodiment 1:

[0046] This embodiment provides a hot pressing mold preheating device, comprising a heat supply box 1 and a metal container 7. The heat supply box 1 is provided with a transversely arranged metal container 7 at the inner center thereof, and a spiral coil 402 is sleeved and installed on the metal container 7.

[0047] Two ventilation holes are symmetrically provided on the left and right side walls of the heat supply box 1, and a wind tube 103 is fixedly installed inside the heat supply box 1 between the two ventilation holes; the wind tube 103 is coaxially inserted with the metal container 7; a fan 5 is installed on the left side wall of the heat supply box 1 at the position of the ventilation hole by screw locking, and the fan 5, the wind tube 103 and the ventilation hole are concentrically arranged;

[0048] A horizontal receiving tray 2 is installed on the right side of the heat supply box 1. The receiving tray 2 is used to receive the heating medium that leaks out from the hot pressing mold 3 and the two medium conduits 102 when the two hoses on the hot pressing mold 3 and the two medium conduits 102 are disassembled after the heating operation is completed, so as to avoid the leaked heating medium from being directly scattered and poured on the ground or the workbench, causing waste and pollution, which helps to reduce the consumption of the heating medium and saves the trouble of subsequent additional cleaning of the ground or the workbench. A horizontally arranged supporting plate 201 is welded above the top of the receiving tray 2. The supporting plate 201 is used to carry and place the hot pressing mold 3 and the two medium conduits 102. 3; the right ventilation hole is opposite to the hot pressing mold 3 at a left and right interval; the fan 5 is used to blow the waste heat of the spiral coil 402 onto the hot pressing mold 3, the wind tube 103 and the metal medium tank 7 together form a waste heat recovery mechanism, and an annular air duct is formed between the wind tube 103 and the metal medium tank 7. The fan 5 can blow the waste heat emitted by the spiral coil 402 and the metal medium tank 7 onto the hot pressing mold 3 through the annular air duct to heat the outer surface of the hot pressing mold 3. Compared with the prior art, it can avoid the direct loss and waste of heat that is not reasonably and effectively utilized on the heating and heating components, which helps to indirectly improve the overall heat utilization rate of the device;

[0049] The waste heat recovery mechanism can blow and heat the outer surface of the hot pressing mold 3, and the heating medium transported by the circulating pump 6 can circulate and heat the inside of the hot pressing mold 3, which enables the hot pressing mold 3 to receive internal and external composite dual heating, effectively improving the penetration rate of heat on the hot pressing mold 3, reducing the time required for the hot pressing mold 3 to be fully heated, and improving the heating efficiency of the preheating device.

[0050] Preferably,

[0051] A circulation pump 6 is fixedly installed on the bottom plate of the heat supply box 1, and an L-shaped conduit is connected between the water inlet pipe of the circulation pump 6 and the left end of the metal container 7. Two medium conduits 102 are welded through the right side wall of the heat supply box 1 at intervals, wherein the tail end of the upper medium conduit 102 is fixedly connected to the right end of the metal container 7 by screw locking. The circulation pump 6 is used to circulate and suck the medium in the metal medium tank 7 to heat the inside of the hot pressing mold 3;

[0052] The tail end of the lower medium conduit 102 is connected to the water outlet pipe of the circulation pump 6. Two solenoid valves are installed on the two medium conduits 102. The two solenoid valves are opened and closed synchronously with the circulation pump 6. The two solenoid valves are used to seal the heating medium remaining in the two medium conduits 102 and inside the metal container 7 when the two hoses are disassembled and separated from the hot pressing mold 3, so as to prevent the heating medium in the metal container 7 from being completely discharged into the receiving tray 2 by gravity through the two medium conduits 102, affecting subsequent use.

[0053] Preferably,

[0054] A tripod support 101 is welded in the right ventilation hole, and an upper medium conduit 102 penetrates and is welded and fixed to the middle portion of the tripod support 101 .

[0055] Preferably,

[0056] The head ends of the two medium conduits 102 are both connected with hoses, and the head ends of the two hoses are respectively connected to an inlet and an outlet on the hot pressing mold 3 for the heating medium to enter and exit.

[0057] Based on the first embodiment, the second embodiment:

[0058] A controller 4 is installed on the top of the heat supply box 1. The controller 4 generates a high-frequency electromagnetic field on the spiral coil 402 through a high-frequency power supply. The spiral coil 402 heats the metal medium tank 7 inserted therein through the high-frequency alternating electromagnetic field to achieve indirect heating of the medium inside the metal medium tank 7. Two insulating wire tubes 401 are installed through the top plate of the heat supply box 1 through screw locking. The head and tail ends of the spiral coil 402 are fixedly connected to the bottom ends of the two insulating wire tubes 401 respectively.

[0059] Wires are passed through the two insulating wire tubes 401 , the tail ends of the wires are electrically connected to the spiral coil 402 , and the head ends of the wires are electrically connected to the controller 4 .

[0060] Preferably,

[0061] The air duct 103 as a whole is composed of two semicircular tubes connected at the front and rear, and the left and right ends of the two semicircular tubes are fixedly connected to the left and right side walls of the heat supply box 1 by screw locking.

[0062] Preferably,

[0063] The L-shaped conduit and the two insulating wire tubes 401 are both penetrated and matched with the circumferential side wall of the air cylinder 103.

[0064] Working principle:

[0065] The controller 4 generates a high-frequency electromagnetic field on the spiral coil 402 through a high-frequency power supply, and the spiral coil 402 heats the metal medium tank 7 inserted therein through the high-frequency alternating electromagnetic field, so as to indirectly heat the medium inside the metal medium tank 7;

[0066] The wind tube 103 and the metal medium tank 7 together form a waste heat recovery mechanism. An annular air duct is formed between the wind tube 103 and the metal medium tank 7. The fan 5 can blow the waste heat emitted by the spiral coil 402 and the metal medium tank 7 to the hot pressing mold 3 through the annular air duct to heat the outer surface of the hot pressing mold 3. The circulating pump 6 is used to circulate and suck the medium in the metal medium tank 7 to heat the inside of the hot pressing mold 3.

[0067] The receiving tray 2 is used to receive the heating medium leaked from the hot pressing mold 3 and the two medium conduits 102 when the two hoses on the hot pressing mold 3 and the two medium conduits 102 are disassembled after the heating operation is completed, so as to prevent the leaked heating medium from being directly scattered and poured onto the ground or the workbench, causing waste and pollution.

[0068] In this article, there are a few points to note:

[0069] 1. The drawings of the embodiments of the present utility model only relate to the structures related to the embodiments of the present utility model, and other structures may refer to the usual designs.

[0070] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0071] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field 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 hot pressing mold preheating device, comprising: A heat supply box (1) and a metal container (7), wherein a transversely arranged metal container (7) is installed at the inner center of the heat supply box (1), and a spiral coil (402) is installed on the metal container (7); The invention is characterized in that two ventilation holes are symmetrically provided on the left and right side walls of the heat supply box (1), and a wind tube (103) is fixedly installed inside the heat supply box (1) between the two ventilation holes; the wind tube (103) is coaxially inserted and matched with the metal container (7); a fan (5) is installed on the left side wall of the heat supply box (1) at the position of the ventilation hole by screw locking, and the fan (5), the wind tube (103) and the ventilation hole are concentrically arranged; A horizontally arranged receiving tray (2) is installed on the right side of the heat supply box (1), and a horizontally arranged supporting plate (201) is welded above the top of the receiving tray (2), and the supporting plate (201) is used to support and place the hot pressing mold (3); the ventilation hole on the right side is opposite to the hot pressing mold (3) at a left and right interval; the fan (5) is used to blow the residual heat of the spiral coil (402) onto the hot pressing mold (3).

2. The hot pressing mold preheating device according to claim 1, characterized in that: A circulation pump (6) is fixedly mounted on the bottom plate of the heat supply box (1), an L-shaped conduit is connected between the water inlet pipe of the circulation pump (6) and the left end of the metal container (7), and two medium conduits (102) are welded through the right side wall of the heat supply box (1) at intervals, wherein the tail end of the upper medium conduit (102) is fixedly connected to the right end of the metal container (7) by screw locking; The tail end of the lower medium conduit (102) is connected to the water outlet pipe of the circulation pump (6).

3. The hot pressing mold preheating device according to claim 2, characterized in that: A tripod bracket (101) is welded in the ventilation hole on the right side, and the upper medium conduit (102) is penetrated and fixed to the middle part of the tripod bracket (101) by welding.

4. The hot pressing mold preheating device according to claim 2, characterized in that: The head ends of the two medium conduits (102) are both connected to a hose, and the head ends of the two hoses are respectively connected to an inlet and an outlet on the hot pressing mold (3) for the heating medium to enter and exit.

5. The hot pressing mold preheating device according to claim 2, characterized in that: A controller (4) is installed at the top of the heat supply box (1); two insulating wire tubes (401) are installed through the top plate of the heat supply box (1) by means of screws, and the head and tail ends of the spiral coil (402) are respectively fixedly connected to the bottom ends of the two insulating wire tubes (401); Conductive wires are passed through the two insulating wire tubes (401), the tail ends of the conductive wires are electrically connected to the spiral coil (402), and the head ends of the conductive wires are electrically connected to the controller (4).

6. The hot pressing mold preheating device according to claim 5, characterized in that: The L-shaped conduit and the two insulating wire tubes (401) are both penetrated and matched with the circumferential side wall of the wind cylinder (103).

7. The hot pressing mold preheating device according to any one of claims 1 to 6, characterized in that: The air duct (103) as a whole is composed of two semicircular tubes connected at the front and rear ends, and the left and right ends of the two semicircular tubes are fixedly connected to the left and right side walls of the heat supply box (1) by screw locking.

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