Electromagnetic heating rotational molding cabin and rotational molding equipment thereof

Abstract

The utility model discloses an electromagnetic heating rotational molding cabin and rotational molding equipment thereof, which belong to the technical field of rotational molding machine heating, and comprise a rectangular cabin body, an electromagnetic heating device and a fan, the rectangular cabin body is internally provided with a partition wall, the partition wall divides the rectangular cabin body into a rotational molding chamber and a heating chamber, the partition wall is provided with an air return hole and an air supply hole, and the electromagnetic heating device is arranged in the rectangular cabin body. The electromagnetic heating device comprises a metal barrel and a heating coil, the heating coil is arranged outside the metal barrel and electrically connected with an electromagnetic power supply outside the rectangular cabin, the metal barrel is fixed in the heating chamber, an upper opening of the metal barrel is communicated with the air return hole, and a lower opening of the metal barrel is communicated with the air return hole. A lower opening of the metal barrel is communicated with an inlet of the fan, and an outlet of the fan is communicated with the air supply hole. Heat is supplied in an electromagnetic heating mode, the temperature is uniform, raw materials in the rotational molding mold are uniformly melted, the rotational molding quality of a product is improved, energy consumption is small, the production cost is reduced, and meanwhile the purpose of environmental protection is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rotational moulding machine heating, especially to an electromagnetic heating rotational moulding cabin and rotational moulding equipment thereof. BACKGROUND

[0002] Rotational moulding, also known as rotocasting, spin casting or rotation molding, is a method of hollow molding of thermoplastic materials. The method is to first put the plastic raw material into the mold, then rotate the mold along two perpendicular axes and heat it. Under the action of gravity and heat, the plastic raw material in the mold gradually and uniformly coats and adheres to the entire surface of the mold cavity, forming the desired shape, and then the product is formed after cooling and setting.

[0003] The rotational moulding machine can be heated by setting a heating chamber outside the rotational mold. Most of the existing rotational moulding machines use natural gas or liquefied gas for heating. The hot air produced contains various impurities. The use of natural gas or liquefied gas for heating generally requires a burner. The burner nozzle emits flames to heat the circulating air. The temperature of the heated air is not uniform, which leads to uneven melting of the raw material in the rotational mold, affecting the quality of the product. In addition, this heating method consumes a lot of energy to maintain the temperature of the heating chamber, increasing production costs. SUMMARY

[0004] The utility model provides a kind of electromagnetic heating rotational moulding cabin and rotational moulding equipment thereof in view of the deficiency of prior art.

[0005] The technical scheme for solving the above technical problems of the utility model is as follows:

[0006] An electromagnetic heating rotational moulding cabin includes a rectangular cabin body, an electromagnetic heating device and a fan. A partition wall is provided inside the rectangular cabin body. The partition wall divides the rectangular cabin into a rotational molding chamber and a heating chamber. Return air holes and air supply holes are provided on the partition wall. The electromagnetic heating device includes a metal cylinder and a heating coil. The heating coil is arranged outside the metal cylinder. The heating coil is electrically connected to an electromagnetic power supply outside the rectangular cabin body. The metal cylinder is fixed in the heating chamber. The upper opening of the metal cylinder is in communication with the return air holes. The lower opening of the metal cylinder is in communication with the inlet of the fan. The outlet of the fan is in communication with the air supply holes.

[0007] Further, the heating chamber is provided with a support frame for the electromagnetic heating device. The metal cylinder is fixed on the support frame by upper and lower flanges.

[0008] Further, the support frame is provided with a heat insulation material. The support frame divides the heating chamber into a return air chamber and an air supply chamber.

[0009] Further, the rotational molding chamber is also provided with a chamber door.

[0010] Further, the air return hole is provided with a plurality of holes in the horizontal direction.

[0011] An electromagnetic heating rotational molding device comprises the electromagnetic heating rotational molding cabin and a rotational molding rotating arm and a mold tray arranged in the rotational molding chamber.

[0012] Further, the mold tray is symmetrically arranged with a pair of rotating arms.

[0013] Compared with the prior art, the above technical scheme has the following beneficial effects:

[0014] The electromagnetic heating rotational molding cabin and the rotational molding device divide the rectangular cabin into a rotational molding chamber and a heating chamber, power the heating coil to heat the metal cylinder, and circulate the heat in the heating chamber to the rotational molding chamber by the fan, so that the heat can be circulated in the whole rectangular cabin, the temperature in the rectangular cabin is heated to the molding temperature of the rotational molding product, the electromagnetic heating mode is used for heating, the heating coil heats the metal cylinder, and the heated air has uniform temperature without heat conduction process, so that the raw material in the rotational molding mold is uniformly melted, the quality of the rotational molding product is improved, the heat conversion rate of the heating mode is very high, the energy consumption is small, the production cost is reduced, and the environmental protection purpose is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a sectional view of the embodiment of the utility model;

[0016] Fig. 2 It is a sectional view of the embodiment of the utility model.

[0017] Mark explanation: 1, rectangular cabin;2, electromagnetic heating device;3, metal cylinder;4, heating coil;5, support frame;6, air supply hole;7, air return hole;8, heating chamber;9, rotational molding chamber;10, fan;11, air return chamber;12, air supply chamber;13, rotating arm;14, partition wall;15, rotational molding mold;16, chamber door. DETAILED DESCRIPTION

[0018] The principles and characteristics of the utility model are described below in combination with all the drawings, and the examples are only used to explain the utility model and not used to limit the scope of the utility model.

[0019] The embodiment of the utility model discloses an electromagnetic heating rotational molding cabin and a rotational molding device.

[0020] Refer to Figs. 1-2The utility model discloses an electromagnetic heating rotational moulding cabin, including rectangular cabin body 1, electromagnetic heating device 2 and fan 10, the rectangular cabin body 1 is equipped with the partition wall 14, the partition wall 14 will the rectangular cabin body 1 is divided into rotational moulding room 9 and heating room 8, be equipped with return air hole 7 and air supply hole 6 on the partition wall 14, return air hole 7 is located the upper end of partition wall 14, in this embodiment, return air hole 7 is equipped with a plurality of along horizontal direction, to improve the efficiency of return air, air supply hole 6 is located the lower end of partition wall 14, the electromagnetic heating device 2 includes metal cylinder 3 and heating coil 4, heating coil 4 is located the outside of metal cylinder 3, heating coil 4 with the electromagnetic power supply outside rectangular cabin body 1 electricity is connected, metal cylinder 3 is fixed in heating room 8, the upper mouth of metal cylinder 3 is linked with return air hole 7, the lower mouth of metal cylinder 3 is communicated with fan 10 inlet, the outlet of fan 10 is communicated with air supply hole 6.

[0021] The rectangular cabin body 1 is divided into the rotational moulding room 9 and the heating room 8, the heating coil 4 is powered to heat the metal cylinder 3, the fan 10 circulates the heat in the heating room 8 to the rotational moulding room 9, so that the heat can circulate in the whole rectangular cabin body 1, the temperature in the rectangular cabin body 1 is heated to meet the forming temperature of the rotational moulding product, and the electromagnetic heating mode is used for heating, that is, the heating coil 4 heats the metal cylinder 3, that is, the metal cylinder 3 generates heat by itself, and there is no heat conduction process in the middle, the temperature in the heated air is very uniform, so that the raw material melting in the rotational moulding die 15 is uniform, the quality of the rotational moulding product is improved, the heat conversion rate of the heating mode is very high, energy consumption is small, and the production cost is reduced.

[0022] In this embodiment, the heating principle of the electromagnetic induction device is that: an alternating magnetic field is generated through an electronic circuit board component, when a metal container is placed on the alternating magnetic field, the surface of the container cuts the alternating magnetic lines of force and generates an alternating current (i.e., eddy current) at the bottom metal part of the container. The eddy current causes the carrier particles at the bottom of the container to move at a high speed in a random manner. The carrier particles collide with and rub against the atoms to generate heat energy.

[0023] The heating room 8 is provided with the support frame 5 of the electromagnetic heating device 2, the metal cylinder 3 is fixed on the support frame 5 through upper and lower flanges, and the metal cylinder 3 is supported by the support frame 5. Further, the support frame 5 is provided with heat insulation material, and the support frame 5 divides the heating room 8 into a return air chamber 11 and a supply air chamber 12.

[0024] Further, the rotational moulding room 9 is also provided with a room door 16.

[0025] The utility model discloses an electromagnetic heating rotational moulding equipment.

[0026] Refer to Figs. 1-2The electromagnetic heating rotomolding equipment comprises the electromagnetic heating rotomolding cabin and further comprises a rotomolding rotating arm 13 and a mold tray arranged in the rotomolding chamber 9, the mold tray being used for clamping a rotomolding mold 15, the rotating arm 13 penetrating through the side wall of the rotomolding chamber 9 and being connected with a rack outside the rotomolding chamber 9, the rack being provided with a driving mechanism for driving the rotating arm 13, the rotating arm 13 being driven to rotate by the driving mechanism, so as to drive the mold tray to rotate and achieve the rotomolding purpose.

[0027] Further, the mold tray is symmetrically arranged with a pair of rotating arms 13 as the center to improve the efficiency of rotomolding.

[0028] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electromagnetic heating rotational moulding cabin comprising a rectangular cabin body (1), an electromagnetic heating device (2) and a fan (10), characterized in that, The rectangular cabin (1) is provided with a partition wall (14), which separates the rectangular cabin into a rotational molding chamber (9) and a heating chamber (8), the partition wall (14) is provided with a return air hole (7) and a air supply hole (6), the electromagnetic heating device (2) comprises a metal cylinder (3) and a heating coil (4), the heating coil (4) is arranged outside the metal cylinder (3), the heating coil (4) is electrically connected with an electromagnetic power source outside the rectangular cabin (1), the metal cylinder (3) is fixed in the heating chamber (8), the upper opening of the metal cylinder (3) is communicated with the return air hole (7), the lower opening of the metal cylinder (3) is communicated with the inlet of the fan (10), the outlet of the fan (10) is communicated with the air supply hole (6).

2. The electromagnetic heating rotational moulding cabin according to claim 1, characterized in that: The heating chamber (8) is provided with a support frame (5) of the electromagnetic heating device (2), and the metal cylinder (3) is fixed on the support frame (5) through upper and lower flanges.

3. The electromagnetic heating rotational moulding cabin according to claim 2, characterized in that: The support frame (5) is provided with a heat insulation material, and the support frame (5) divides the heating chamber (8) into a return air chamber (11) and a air supply chamber (12).

4. The electromagnetic heating rotational molding cabin according to claim 1, wherein: The rotational molding chamber (9) is further provided with a chamber door (16).

5. The electromagnetic heating rotational molding cabin according to claim 1, wherein: The return air hole (7) is provided with a plurality of holes in the horizontal direction.

6. An electromagnetic heated rotational moulding apparatus characterised in that: The electromagnetic heating rotational molding cabin comprises the electromagnetic heating rotational molding cabin according to any one of claims 1-5, and further comprises a rotational molding rotating arm (13) and a mold tray arranged in the rotational molding chamber (9), the rotating arm (13) penetrates through the side wall of the rotational molding chamber (9) and is connected with a rack outside the rotational molding chamber (9), and the rack is provided with a driving mechanism for driving the rotating arm (13).

7. An electromagnetic heated rotational moulding apparatus according to claim 6, wherein: The mold tray is symmetrically provided with a pair of rotating arms (13) as the center. The electromagnetic heating rotational molding cabin comprises the electromagnetic heating rotational molding cabin according to any one of claims 1-5, and further comprises a rotational molding rotating arm (13) and a mold tray arranged in the rotational molding chamber (9), the rotating arm (13) penetrates through the side wall of the rotational molding chamber (9) and is connected with a rack outside the rotational molding chamber (9), and the rack is provided with a driving mechanism for driving the rotating arm (13). The mold tray is symmetrically provided with a pair of rotating arms (13) as the center. The electromagnetic heating rotational molding cabin comprises the electromagnetic heating rotational molding cabin according to any one of claims 1-5, and further comprises a rotational molding rotating arm (13) and a mold tray arranged in the rotational molding chamber (9), the rotating arm (13) penetrates through the side wall of the rotational molding chamber (9) and is connected with a rack outside the rotational molding chamber (9), and the rack is provided with a driving mechanism for driving the rotating arm (13). The mold tray is symmetrically provided with a pair of rotating arms (13) as the center.

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