Energy-saving composite material forming machine heated by heat-conducting oil

Abstract

The utility model discloses an energy-saving composite material forming machine heated by heat conducting oil, which comprises a heat conducting plate, the heat conducting plate is arranged on an upper pressing die and a lower pressing die of the forming machine, a plurality of oil channels are arranged in the heat conducting plate, electric heating pipes are arranged in the oil channels, the oil channels are connected with an oil inlet pipe and an oil outlet pipe, and the oil outlet pipe is connected with a hot coal oil pump. The other end of the hot coal oil pump is connected with an oil inlet pipe, the diameter of the oil inlet pipe is larger than that of the oil outlet pipe, and the oil inlet pipe and the oil return pipe are connected with a heat-conducting oil gathering pipe which is connected with an expansion groove. Oil in the expansion tank is preliminarily heated through the heating device, after the oil reaches the preset temperature, the oil in the expansion tank is pumped into the oil outlet pipe from the oil inlet pipe through the hot coal oil pump, and the diameter of the oil inlet pipe is larger than that of the oil outlet pipe, so that the oil pipe becomes smaller, the oil pressure is increased, and air residues in the oil pipe are reduced; the heat conduction plate is filled with hot oil rapidly, the heat conduction efficiency of the hot oil is improved, and heat conduction is more balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of molding machines, in particular to an energy-saving thermal oil-heated composite material molding machine. Background Art

[0002] Existing molding machines generally use mold temperature controllers for heating, so that the actual temperature of the molding machine is maintained at the required temperature. Mold temperature controllers, also known as mold temperature controllers, were originally used in the temperature control industry of injection molds. Later, with the development of the machinery industry, they were more and more widely used. Now mold temperature controllers are generally divided into water temperature controllers and oil temperature controllers, and the temperature control accuracy can reach ±0.1°C. Existing mold temperature controllers heat the molding machine by first heating the heat transfer oil to the required temperature in a heating container outside the molding machine, and then transporting it to the upper and lower templates of the molding machine through a conduit to heat the upper and lower templates. One heating container can meet the use of several molding machines at the same time. This structural method will cause energy loss in the pipelines where the heat transfer oil is transported to the upper and lower templates, especially when the heat transfer oil is heated to a high temperature in the heat container, it will also dissipate heat to the outside world, resulting in a large waste of energy, and the equipment is not highly integrated.

[0003] The Chinese patent authorization publication number is CN209126122U. It is an energy-saving composite material forming machine heated by heat transfer oil, including: a container for holding heat transfer oil, an oil pump connected to the container through a conduit, an upper heating plate connected to the oil pump through a conduit, a lower heating plate connected to the container through a conduit, and a template assembly arranged between the upper heating plate and the lower heating plate, wherein the upper heating plate and the lower heating plate are both provided with oil channels for the circulation of heat transfer oil, the oil channels in the upper heating plate are connected to the oil channels in the lower heating plate through a pipeline, and the upper heating plate and the lower heating plate are both provided with a heating mechanism for heating the heat transfer oil in the oil channels. This technical solution can effectively avoid the energy loss caused by the heat transfer oil being heated in the heat container and the heated heat transfer oil being transported in the conduit in the prior art by transferring the link of heating the heat transfer oil to the upper heating block and the lower heating block, which is energy-saving and environmentally friendly, and is conducive to improving the integration of the equipment.

[0004] However, the above-mentioned prior art solution has the following defects: the oil circuit adopts a full-diameter oil pipe, which causes the hot oil to be in a state of equal pressure during circulation. During the pumping process, air is easily retained, resulting in the hot oil in the oil pipe not being filled, the thermal conductivity efficiency is reduced, and it is also easy to cause the problem of uneven thermal conduction.

[0005] Therefore, we propose an energy-saving thermal oil-heated composite material molding machine to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide an energy-saving composite material forming machine heated by heat-conducting oil to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving heat-conducting oil-heated composite material forming machine, comprising: a heat-conducting plate, which is arranged on the upper and lower dies of the forming machine;

[0008] A plurality of oil channels are provided in the heat conducting plate, and electric heating pipes are provided in the oil channels;

[0009] The oil passage is connected to an oil inlet pipe and an oil outlet pipe, wherein the oil outlet pipe is connected to a hot kerosene pump, and the other end of the hot kerosene pump is connected to the oil inlet pipe;

[0010] The diameter of the oil inlet pipe is greater than the diameter of the oil outlet pipe;

[0011] The oil inlet pipe and the oil return pipe are connected to the heat transfer oil gathering pipe, and the heat transfer oil gathering pipe is connected to the expansion tank.

[0012] Preferably, the oil passage is mainly composed of a plurality of side-by-side main oil passages and collecting oil passages located at the upper and lower ends of the main oil passages.

[0013] Preferably, a blockage is provided in the collecting oil channel.

[0014] Preferably, the two main oil passages are respectively provided with an oil outlet and an oil inlet.

[0015] Preferably, the oil outlet is connected to the oil return pipe through a connecting pipe, and the oil inlet is connected to the oil outlet pipe through a connecting pipe.

[0016] Preferably, an oil heating device is provided in the expansion tank storage device.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The oil is preliminarily heated in the expansion tank by the heating device. After reaching the predetermined temperature, the oil in the expansion tank is pumped from the oil inlet pipe into the oil outlet pipe by the hot kerosene pump. Since the diameter of the oil inlet pipe is larger than the diameter of the oil outlet pipe, the oil pipe is changed from large to small, which increases the oil pressure and reduces the residual air in the oil pipe, allowing the hot oil to quickly fill into the heat conduction plate, thereby increasing the thermal conductivity of the hot oil and making the heat conduction more balanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a cross-sectional view of the heat conducting plate in the utility model.

[0021] In the figure: 1, expansion tank; 2, heat transfer oil gathering pipe; 3, oil inlet pipe; 4, hot kerosene pump; 5, oil outlet pipe; 6, connecting pipe; 7, heat transfer plate; 71, oil outlet; 72, oil inlet; 8, oil channel; 9, blockage; 10, oil return pipe; 11, electric heating pipe. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-2 The utility model provides a technical solution: an energy-saving heat-conducting oil-heated composite material forming machine, comprising: a heat-conducting plate 7, which is arranged on the upper and lower dies of the forming machine, and the heat-conducting plate 7 heats the dies to perform hot pressing forming on the composite material;

[0024] A plurality of oil passages 8 are provided in the heat conducting plate 7, and electric heating pipes 11 are provided in three of the oil passages 8. When the hot oil passes through the oil passages 8 of the conductive heating pipes 11, it is heated again to achieve constant temperature of the hot oil.

[0025] The oil passage 8 is mainly composed of a number of parallel main oil passages and collecting oil passages located at the upper and lower ends of the main oil passages. A plug 9 is provided in the collecting oil passage, so that the main oil passage and the collecting oil passage form an S-shaped passage.

[0026] The two outermost main oil passages are respectively provided with an oil outlet 71 and an oil inlet 72, wherein the oil outlet 71 is connected to the oil return pipe 10 via a connecting pipe 6, and the oil inlet 72 is connected to the oil outlet pipe 5 via a connecting pipe 6;

[0027] The oil outlet pipe 5 is connected to a hot kerosene pump 4, and the other end of the hot kerosene pump 4 is connected to the oil inlet pipe 3;

[0028] The diameter of the oil inlet pipe 3 is larger than that of the oil outlet pipe 5, so that the oil pipe is reduced from large to small, increasing the oil pressure and facilitating the movement of the oil;

[0029] The oil inlet pipe 3 and the oil return pipe 10 are connected to the heat transfer oil gathering pipe 2, and the heat transfer oil gathering pipe 2 is connected to the expansion tank 1;

[0030] The expansion tank 1 is a temporary storage device for the oil to reflux after it is heated and expanded, and is also an initial storage device for the oil. An oil heating device is arranged in the storage device.

[0031] Working principle: The oil is preliminarily heated in the expansion tank 1 by the heating device. After reaching the predetermined temperature, the oil in the expansion tank 1 is pumped from the oil inlet pipe 3 into the oil outlet pipe 5 by the hot kerosene pump 4. At the same time, the oil pressure is increased to make the hot oil quickly enter the heat conduction plate 7, and the hot oil is heated again by the electric heating tube 11 to keep the hot oil at a constant temperature. The hot oil flows through the heat conduction plate 7 to make the heat conduction plate 7 generate heat, and the heat is transferred to the die of the molding machine to perform hot pressing molding on the composite material. Then the hot oil flows back into the heat conduction oil gathering pipe 2 through the return oil pipe 10, and is pumped into and out of the oil pipe 5 by the hot kerosene pump 4 for recycling. This method heats the die by heating the oil. The heating oil has a strong temperature storage capacity and can effectively reduce the waste of heat. With the reheating of a small amount of electric heating tubes 11, the heat conduction plate 7 can maintain constant temperature and heat, thereby meeting the constant temperature requirement of the molding machine.

[0032] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving thermal oil-heated composite material forming machine, comprising: A heat conducting plate (7), wherein the heat conducting plate (7) is arranged on the upper and lower dies of the molding machine; The invention is characterized in that: a plurality of oil passages (8) are provided in the heat conducting plate (7), and an electric heating pipe (11) is provided in the oil passage (8); The oil passage (8) is connected to an oil inlet pipe (3) and an oil outlet pipe (5), wherein the oil outlet pipe (5) is connected to a hot kerosene pump (4), and the other end of the hot kerosene pump (4) is connected to the oil inlet pipe (3); The diameter of the oil inlet pipe (3) is greater than the diameter of the oil outlet pipe (5); The oil inlet pipe (3) and the oil return pipe (10) are connected to the heat transfer oil gathering pipe (2), and the heat transfer oil gathering pipe (2) is connected to the expansion tank (1).

2. The energy-saving thermal oil-heated composite material forming machine according to claim 1, characterized in that: The oil passage (8) is mainly composed of a plurality of main oil passages arranged side by side and collecting oil passages located at the upper and lower ends of the main oil passages.

3. The energy-saving thermal oil-heated composite material forming machine according to claim 2, characterized in that: A plug (9) is provided in the collecting oil passage.

4. The energy-saving thermal oil-heated composite material forming machine according to claim 2, characterized in that: The two main oil passages are respectively provided with an oil outlet (71) and an oil inlet (72).

5. The energy-saving thermal oil-heated composite material forming machine according to claim 4, characterized in that: The oil outlet (71) is connected to the oil return pipe (10) via a connecting pipe (6), and the oil inlet (72) is connected to the oil outlet pipe (5) via a connecting pipe (6).

6. The energy-saving thermal oil-heated composite material forming machine according to claim 1, characterized in that: An oil heating device is provided in the storage device of the expansion tank (1).

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