Deep cavity structure heating device for rotational molding mold

Abstract

The utility model provides a deep cavity structure heating device for rotational moulding mould, including heating pipe coil, the heating pipe coil includes air inlet section, annular section and air outlet section, the annular section is composed of a plurality of continuous spiral coil, the heating pipe coil is detachably fixed on the rotary support, and the heating pipe coil is copper pipe, and the air outlet section is in the shape of the spiral coil. The annular section is composed of at least two continuous spiral rings, and the spiral rings are arranged at intervals; and the air blowing element is communicated with the air outlet section, blows air into the deep cavity, and is provided with a mounting bracket for fixing the air blowing element on a mold frame. The heating device is better in heating effect and more reasonable in arrangement.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotomolding mold processing technical field, concretely relates to a deep cavity structure heating device for rotomolding mold. BACKGROUND

[0002] In the rotomolding product production process, some molds have deep cavity structure, in order to make the wall thickness of product formation meet the standard, it is needed to heat the deep cavity part, a kind of heating device for rotomolding mold deep cavity position (announcement number CN216635089U) of existing, it is installed with a heating box on rotating support, heating box is equipped with heating pipe, gas is heated and is blown to the deep cavity structure of mold, the heating device can realize the demand of heating.

[0003] But in actual use process, it is found that, heating pipe is placed in heating box volume is larger and needs to occupy the area of a large block on rotating support, so that when installing mold, it is very inconvenient, and if position is placed improperly when being placed with mold, uneven distribution is prone to make rotating support rotate and shake. Therefore, the utility model provides a deep cavity structure heating device for rotomolding mold, which has better heating effect and more reasonable arrangement. UTILITY MODEL CONTENT

[0004] The utility model provides a deep cavity structure heating device for rotomolding mold, which can effectively solve the above problems.

[0005] The utility model is implemented as follows:

[0006] A deep cavity structure heating device for rotomolding mold, comprising:

[0007] A heating pipe disc, the heating pipe disc includes an air inlet section, an annular section and an air outlet section, the annular section is composed of a plurality of continuous spiral turns, the heating pipe disc is detachably fixed on a rotating support, and the heating pipe disc is a copper pipe, the annular section is composed of at least two continuous spiral turns, and each spiral turn is spaced apart;

[0008] A gas blowing element, the gas blowing element is in communication with the air outlet section, and blows gas into the deep cavity, the gas blowing element is provided with a mounting bracket for fixing the gas blowing element on the mold rack.

[0009] Further improved, the annular section is spaced apart by 5-10cm, the outer diameter of the heating pipe disc is smaller than the outer diameter of the rotating support, and the distance between the outer diameter of the rotating support is 5-10cm 。

[0010] Further improvement, the mounting bracket comprises a first clamp, a second clamp connected with the first clamp through bolts, a connecting column arranged on the side of the second clamp, a clamping nut threaded with the connecting column, and a connecting rod connected with the blowing element.

[0011] Further improvement, the air outlet section is connected with the blowing element through a hose.

[0012] Further improvement, the end of the air outlet section is further provided with a three-way valve, the three-way valve has an inlet and two outlets, and each outlet is provided with an independent valve.

[0013] Further improvement, the blowing element is a straight blowing head, having an air inlet and an air outlet.

[0014] Further improvement, the blowing element is a straight pipe type, inserted into the deep cavity of the mold, and the end is provided with a first air outlet hole, and the side is provided with a plurality of second air outlet holes, the exhaust direction of the second air outlet hole is inclined away from the first air outlet hole.

[0015] Further improvement, further comprising a fixing bracket, the fixing bracket is arranged on the side of the heating pipe disc and is detachably fixed on the rotating support through bolts.

[0016] The beneficial effects of the present application are:

[0017] The space utilization and installation convenience are improved, the heating pipe disc is dispersedly arranged, does not conflict with the installation position of the mold, and the space is left for the installation of the mold, the rotation stability is enhanced, the heating pipe disc is reasonably distributed to make the weight uniform, the rotation shaking is avoided, and the heating efficiency is better, the annular section spiral ring design and the plane arrangement make the heat exchange sufficient, and the heating effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is the installation structure schematic diagram provided by the embodiment one of the present application.

[0020] Figure 2 is the overall structure schematic diagram provided by the embodiment one of the present application.

[0021] Figure 3 is the mounting bracket structure schematic diagram provided by the embodiment one of the present application.

[0022] Figure 4 is a cross-sectional view of the blowing element provided by the embodiment two of the present application.

[0023] Reference signs:

[0024] 1, heating pipe disc; 11, air inlet section; 12, annular section; 13, air outlet section; 2, rotating support; 3, mold; 4, hose; 5, three-way valve; 6, mounting support; 61, first hoop; 62, second hoop; 63, connecting column; 64, connecting rod; 65, clamping nut; 7, blowing element; 71, first air outlet hole; 72, second air outlet hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application.

[0026] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] Embodiment one:

[0028] With reference to Figures 1-3As shown, a deep cavity structure heating device for rotational molding mold, including heating pipe disc 1, heating pipe disc 1 includes air inlet section 11, annular section 12 and air outlet section 13, air inlet section 11 is connected with the air port on the rotary arm of rotational molding machine, the normal temperature gas from the input end becomes high temperature gas after passing through the inside of heating pipe disc 1, annular section 12 is composed of multiple continuous spiral turns, heating pipe disc 1 can be detachably fixed on rotating support 2, wherein the diameter of the applicable rotating support 2 is 2 meters and above, generally, the rotating support 2 with a diameter of 2 meters is widely used, and the rotating support 2 with a smaller diameter is less placed due to limited space, and large molds 3 with deep cavity structure are also less placed, heating pipe disc 1 is copper pipe, the copper pipe has good heat conductivity and good toughness, which can be conveniently bent into shape, annular section 12 is composed of at least two continuous spiral turns, so as to ensure that the compressed air is fully heated in the heating pipe disc 1 and then enters the deep cavity, thereby ensuring that the air blown to the deep cavity position of the mold 3 is hot air.

[0029] Wherein each spiral turn is arranged at intervals, and the interval between each turn is 5-10 cm, too large interval affects the length of the winding and the diameter of the copper pipe, and too small interval is easy to block each other between adjacent copper pipes, the outer diameter of heating pipe disc 1 is smaller than the outer diameter of rotating support 2, and the interval distance is 5-10 cm, the space path walked by the closer to the circumferential edge position is longer, the air volume flowing through the surface of the copper pipe is more, and generally, the rotating support 2 is a hollow disc, the outermost turn is a circular ring structure, heating pipe disc 1 does not overlap with the circular ring of rotating support 2, avoiding affecting the contact between copper pipe and gas.

[0030] Blowing element 7, blowing element 7 is connected with air outlet section 13, and blows air into the deep cavity, blowing element 7 is provided with a mounting bracket 6 for fixing blowing element 7 on the mold 3 bracket.

[0031] Wherein the mounting bracket 6 includes a first clamp 61, a second clamp 62 connected with the first clamp 61 through a bolt, a connecting column 63 arranged on the side surface of the second clamp 62, a clamping nut 65 threadedly connected with the connecting column 63, and a connecting rod 64 connected with the blowing element 7, which is fixed on the bracket of the mold 3 through the first clamp 61 and the second clamp 62, and the position can be flexibly adjusted, only a support is arranged on the outside of the deep cavity for fixing when the mold 3 bracket is made, and the connecting rod 64 and the connecting column 63 can rotate relative to each other when the clamping nut 65 is loosened, which is used to adjust the angle of the blowing element 7, and the blowing element 7 is fixed after the clamping nut 65 is locked.

[0032] It should be noted that the copper pipe is coiled on the rotating support 2, avoiding the concentrated coiling occupying the volume of the surface of the rotating support 2, affecting the placement of the mold 3, and the weight of the copper pipe can be evenly distributed around the rotating shaft of the rotating support 2, which is more reasonable. In the prior art, the heating pipe coil 1 is wound in the heating box, and the arrangement is too concentrated in the heating chamber. When turning over, it will be affected by the shielding of the adjacent heating pipe. The surface of the copper pipe is not fully contacted with the hot air in one turn, and the heating pipe coil 1 in the embodiment is arranged in the same plane. When rotating, it can be more fully contacted with the hot air inside the heating chamber, so that the gas in the pipe has better heating effect.

[0033] A soft tube 4 is also connected between the output end and the blowing element 7. When different molds 3 are used, the deep cavity position may be different. The use of the soft tube 4 can facilitate the placement of the position of the blowing element 7.

[0034] The end of the gas outlet section 13 is also provided with a three-way valve 5. The three-way valve 5 has an inlet and two outlets, and the two outlets are each provided with an independent valve. The two outlets can be independently opened and closed. When two molds 3 are simultaneously installed on the rotating support 2, the three-way valve 5 can be used to divide the gas flow and supply the two molds 3.

[0035] The blowing element 7 is a straight blowing head. The straight blowing head is connected and fixed with the soft tube 4 to fix the blowing position. The blowing head does not need to be placed in the deep cavity, and is suitable for deep cavities with large cross-sectional areas.

[0036] It also includes a fixed support. The fixed support is arranged on the side of the heating pipe coil 1 and is detachably fixed on the rotating support 2 by bolts.

[0037] Example two:

[0038] Referring to Figure 4 The blowing element 7 is fixed on the mold 3 support, and the blowing element 7 is a straight pipe type, inserted into the deep cavity of the mold 3, and the end is provided with a first gas outlet hole 71, and the side is provided with a plurality of second gas outlet holes 72. The straight pipe type blowing element 7 is suitable for deep cavities with small cross-sectional areas. The exhaust direction of the second gas outlet hole 72 is inclined away from the first gas outlet hole 71. The hot air blown out of the blowing element 7 can flow better from the inside to the outside, avoiding the formation of laminar or turbulent flow state after the gas enters the deep cavity. New gas needs to overcome a large resistance to reach the bottom of the deep cavity and fill the entire space. With the increase of the depth or the complexity of the deep cavity structure, the diffusion and filling difficulty of the gas in the deep cavity increases exponentially, resulting in an increase in the blowing difficulty.

[0039] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. 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. A deep cavity structure heating device for rotational molding molds, characterized in that, include: Heating coil (1), the heating coil (1) includes an air inlet section (11), an annular section (12) and an air outlet section (13), the annular section (12) is composed of multiple continuous spiral coils, the heating coil (1) is detachably fixed on the rotating bracket (2), and the heating coil (1) is a copper tube, the annular section (12) is composed of at least two continuous spiral coils, wherein each spiral coil is spaced apart; The blowing element (7) is connected to the air outlet section (13) and blows air into the deep cavity. The blowing element (7) is provided with a mounting bracket (6) for fixing the blowing element (7) on the mold (3) frame.

2. The deep cavity structure heating device for rotational molding molds according to claim 1, characterized in that, The spiral coils of the annular segment (12) are spaced 5-10 cm apart. The outer diameter of the heating tube coil (1) is smaller than the outer diameter of the rotating bracket (2), and the distance between the two outer diameters is 5-10 cm. 。 3. A deep cavity structure heating device for rotational molding according to claim 2, characterized in that, The mounting bracket (6) includes a first clamp (61), a second clamp (62) bolted to the first clamp (61), a connecting post (63) located on the side of the second clamp (62), a locking nut (65) threaded to the connecting post (63), and a connecting rod (64) connected to the air blowing element (7). 。 4. A deep cavity structure heating device for rotational molding according to claim 1, characterized in that, The air outlet section (13) is connected to the air blowing element (7) via a flexible hose (4).

5. A deep cavity structure heating device for rotational molding according to claim 4, characterized in that, The end of the air outlet section (13) is also provided with a three-way valve (5), which has an inlet and two outlets, and each outlet is provided with an independent valve.

6. A deep cavity structure heating device for rotational molding molds according to claim 4, characterized in that, The blowing element (7) is a blower head with an air inlet and an air outlet.

7. A deep cavity structure heating device for rotational molding according to claim 4, characterized in that, The blowing element (7) is a straight tube type, inserted into the deep cavity of the mold (3), and has a first air outlet (71) at the end and several second air outlets (72) on the side. The exhaust direction of the second air outlets (72) is inclined away from the first air outlet (71).

8. A deep cavity structure heating device for rotational molding according to claim 1, characterized in that, It also includes a fixed bracket, which is located on the side of the heating tube coil (1) and is detachably fixed to the rotating bracket (2) by bolts.

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