On-line heating air expansion forming device capable of realizing heat recovery

Abstract

The utility model discloses an on-line heating gas expansion forming device capable of realizing heat recovery. The on-line heating gas expansion forming device comprises a forming die, a high-temperature gas heating mechanism for heating a pipe fitting and a heat recycling mechanism for recycling heat, the forming mold is internally provided with a mold cavity, and a hot air inlet channel and a hot air exhaust channel which are communicated with the mold cavity; the high-temperature gas heating mechanism is communicated with the hot gas channel; the heat cyclic utilization mechanism comprises a cyclic heating mechanism and cyclic utilization pipelines, the two cyclic utilization pipelines are the first cyclic utilization pipeline and the second cyclic utilization pipeline, and the first cyclic utilization pipeline is connected between the cyclic heating mechanism and the hot air exhaust channel; and the second cyclic utilization pipeline is connected between the cyclic heating mechanism and a hot gas inlet channel communicated with the high-temperature gas heating mechanism. According to the utility model, the heat can be recycled, and the energy consumption can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting forming processing device, concretely relates to an online heating air inflation forming device capable of realizing heat recovery. BACKGROUND

[0002] Pipe fittings are parts for connecting, controlling, changing direction, distributing, sealing and supporting in pipeline systems; metal conductor pipe fittings of various shapes and sizes are widely used in the fields of aerospace, automobiles, petrochemical industry and power systems. These metal conductor pipe fittings have complex and irregular surface shapes in many cases, different parts of the same part have different cross-sectional shapes, and it is difficult to obtain these complex-shaped pipe fittings through direct mechanical processing. At the same time, the mechanical strength of the pipe fitting material is too large, and it is also difficult to form. In order to make the simple pipe blank into a complex pipe fitting that meets the accuracy and quality requirements, the pipe blank is heated, high-pressure gas is introduced into the pipe blank, and the original pipe blank is formed into the required shape under the action of gas pressure and gradually adheres to the outside mold of the pipe blank.

[0003] The existing air pressure forming method has the following disadvantages:

[0004] A large amount of heat is generated during the forming process, but the heat cannot be recycled and utilized, and the energy consumption is large. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above-mentioned problems, and provides an online heating air inflation forming device capable of realizing heat recovery, which can recycle and utilize heat and is beneficial to reducing energy consumption.

[0006] The utility model achieves the purpose by the following technical scheme:

[0007] An online heating air inflation forming device capable of realizing heat recovery, comprising a forming mold, a high-temperature gas heating mechanism for heating the pipe fitting, and a heat recycling mechanism for recycling and utilizing heat;

[0008] The forming mold is provided with a mold cavity and a hot gas passage communicated with the mold cavity, and the hot gas passage comprises a hot gas inlet passage and a hot gas outlet passage;

[0009] The high-temperature gas heating mechanism is communicated with the hot gas inlet passage;

[0010] The heat recycling mechanism comprises a circulating heating mechanism and a recycling pipeline, the recycling pipeline is provided with two first and second recycling pipelines, the first recycling pipeline is connected between the circulating heating mechanism and the hot gas exhaust passage, and the second recycling pipeline is connected between the circulating heating mechanism and the hot gas inlet passage communicated with the high-temperature gas heating mechanism.

[0011] In an preferred embodiment of the utility model, the high-temperature gas heating mechanism is a hearth heating mechanism. The hearth heating device is used to heat air by burning, and the heating efficiency is higher. However, the gas with residual heat discharged from the cavity of the forming die cannot be recycled and heated in the hearth, and if the gas is directly discharged, the heat will be wasted. The high-frequency heating system uses electromagnetic induction heating to heat the gas discharged from the cavity again, so that the temperature of the gas is increased again, and the gas is recycled to heat the workpiece.

[0012] In an preferred embodiment of the utility model, the circulating heating mechanism is a high-frequency heating system.

[0013] In an preferred embodiment of the utility model, the forming die comprises an upper die and a lower die, the cavity comprises an upper cavity arranged in the upper die and a lower cavity arranged in the lower die, and the hot gas passages are arranged on the upper die and the lower die.

[0014] Further, the upper cavity and the lower cavity each comprise a cavity middle part, a cavity neck part and a cavity end part, the cavity neck part is communicated between the cavity middle part and the cavity end part, the cavity neck part and the cavity end part each have two sections, the cavity middle part is located between the two sections of the cavity neck part, and the sizes of the cavity middle part and the cavity end part are greater than the size of the cavity neck part.

[0015] Further, the hot gas passages each comprise a plurality of first passages and a plurality of second passages, one end of the second passage is communicated with the first passage, and the other end of the second passage is respectively communicated with the cavity middle part and the cavity end part. Through the above structure, the hot gas can be respectively delivered to the cavity middle part and the cavity end part to heat the pipe in the cavity middle part and the cavity end part, so that the end part of the pipe is first stamped and formed and sealed, and then the high-pressure gas is input to hydro-expand the middle part of the pipe.

[0016] Further, the first recycling pipeline and the second recycling pipeline are respectively communicated with the first passages of the corresponding hot gas passages.

[0017] In an preferred embodiment of the utility model, the high-temperature gas heating mechanism comprises a gas heater and a hot gas delivery pipeline, and the gas heater is communicated with one of the hot gas passages through the hot gas delivery pipeline.

[0018] One preferred scheme of the utility model, wherein, the gas heater is communicated with the import of the hot gas passage of the lower mould through the hot gas delivery pipeline, and the export of the hot gas passage of the upper mould is connected with the first recycling pipeline.

[0019] Further, the high-temperature gas heating mechanism further comprises an exhaust pipeline in communication with another hot gas passage for conveying the heated waste gas to a designated place for centralized treatment.

[0020] One preferred scheme of the utility model, wherein, the online heating air expansion forming device further comprises two sealing punches, both of which are provided with a high-pressure passage connected with a high-pressure medium supply mechanism through a high-pressure pipeline.

[0021] Further, one end of the sealing punch extends into the upper mould cavity and the lower mould cavity, and the other end of the sealing punch is connected with the driving end of the feeding driving mechanism to drive the sealing punch to stamp and form the end part of the pipe and seal it.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The online heating air expansion forming device can heat the pipe through high-temperature gas online, so that the pipe can be formed at a specified temperature throughout the forming process, and the processing quality is guaranteed.

[0024] 2. The utility model does not need to preheat the mould and the pipe separately, but directly puts the pipe into the mould cavity and then heats it, which is very simple to operate and saves energy consumption.

[0025] 3. The heat recycling mechanism is arranged, the heated gas is conveyed into the first recycling pipeline through another hot gas passage, the heated gas is conveyed into the circulating heating mechanism from the first recycling pipeline, the heated gas is heated again by the circulating heating mechanism, and the gas heated again is conveyed into one of the hot gas passages through the second recycling pipeline, so that heat recycling is realized, and energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is a sectional view of the online heating air expansion forming device of the utility model.

[0027] Fig. 2 It is a three-dimensional structure schematic view of the lower mould of the utility model. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to have a better understanding of the technical scheme of the utility model, the utility model will be further described below in conjunction with embodiments and drawings, but the embodiments of the utility model are not limited to this.

[0029] Referring to Figs. 1-2 The online heating air inflation forming device capable of heat recovery of the embodiment comprises a forming die, a high-temperature gas heating mechanism for heating a pipe, and a heat recycling mechanism for recycling heat, the forming die comprises an upper die 1 and a lower die 2, the upper die 1 is provided with an upper die cavity 1-1, and the lower die 2 is provided with a lower die cavity 2-1, the upper die 1 and the lower die 2 are both provided with a hot gas channel 3, the high-temperature gas heating mechanism comprises a gas heater 4 and a hot gas delivery pipeline 5, and the gas heater 4 is communicated with one of the hot gas channels 3 through the hot gas delivery pipeline 5.

[0030] Referring to Figs. 1-2 The gas heater 4 is communicated with the inlet of the hot gas channel 3 of the lower die 2 through the hot gas delivery pipeline 5, and the outlet of the hot gas channel 3 of the upper die 1 is connected with the heat recycling mechanism. The gas heater is a hearth heating mechanism. The hearth heating device is used for heating air by combustion, and the heating efficiency is higher, but the gas with residual heat discharged after passing through the die cavity of the forming die cannot be recycled for combustion heating in the hearth, and direct discharge causes heat waste; the high-frequency heating system uses electromagnetic induction heating to heat the gas discharged from the die cavity again, so that the temperature of the gas is increased again, thereby being recycled for heating the workpiece.

[0031] Referring to Figs. 1-2 The upper die cavity 1-1 and the lower die cavity 2-1 both comprise a die cavity middle part 6, a die cavity neck part 7 and a die cavity end part 8, the die cavity neck part 7 is communicated between the die cavity middle part 6 and the die cavity end part 8, the die cavity neck part 7 and the die cavity end part 8 are both provided with two sections, the die cavity middle part 6 is located between the two sections of the die cavity neck part 7, and the sizes of the die cavity middle part 6 and the die cavity end part 8 are both greater than the size of the die cavity neck part 7.

[0032] Further, the hot gas channel 3 comprises a first channel 3-1 and two second channels 3-2, one end of the two second channels 3-2 is communicated with the first channel 3-1, and the other end of the two second channels 3-2 is respectively communicated with the die cavity middle part 6 and the die cavity end part 8. Through the above structure, the hot gas can be delivered into the die cavity middle part 6 and the die cavity end part 8 respectively, and the pipe in the die cavity middle part 6 and the die cavity end part 8 is heated respectively, so as to stamp and form the end part of the pipe and seal it first, and then input high-pressure gas to hydro-form the middle part of the pipe.

[0033] Further, the high-temperature gas heating mechanism further comprises an exhaust pipeline in communication with the other hot gas channel 3, for conveying the heated exhaust gas to a designated place for centralized treatment.

[0034] Referring to Figs. 1-2 , the heat recycling mechanism comprises a circulating heating mechanism 9 and a recycling pipeline, the recycling pipeline is provided with two first and second recycling pipelines 10 and 11, the first recycling pipeline 10 is connected between the circulating heating mechanism 9 and the first channel 3-1 of the other hot gas channel 3, and the second recycling pipeline 11 is connected between the circulating heating mechanism 9 and the first channel 3-1 of the hot gas channel 3 in communication with the gas heater 4.

[0035] Further, the circulating heating mechanism 9 is a high-frequency heating system.

[0036] Referring to Figs. 1-2 , the online heating inflation forming device further comprises two sealing punches 12, each of which is provided with a high-pressure channel 12-1 connected with a high-pressure medium supply mechanism through a high-pressure pipeline, the high-pressure medium in the embodiment is gas or liquid, which is configured as needed.

[0037] Further, one end of the sealing punch 12 extends into the upper die cavity 1-1 and the lower die cavity 2-1, and the other end of the sealing punch 12 is connected with the driving end of the feeding driving mechanism, and the sealing punch 12 is driven by the feeding driving mechanism to punch and form the end of the pipe and seal it.

[0038] Referring to Figs. 1-2 , the working principle of the online heating inflation forming device capable of heat recovery in the embodiment is as follows:

[0039] In operation, first, the pipe to be processed is placed in the lower die cavity 2-1 of the lower die 2, and then the upper die 1 is closed; the gas heater 4 heats the air, and the high-temperature air is conveyed to one of the hot gas channels 3 through the hot gas conveying pipeline 5, and moves along the hot gas channel 3 to the upper die cavity 1-1 and the lower die cavity 2-1, heats the pipe in the upper die cavity 1-1 and the lower die cavity 2-1, and makes the temperature of the pipe rise to a specified value, and finally the high-pressure gas is introduced to inflate the pipe until the pipe is formed; the temperature of the gas after heating the pipe is still relatively high, which is conveyed to the first recycling pipeline 10 through the other hot gas channel 3, and the heated gas is conveyed to the circulating heating mechanism 9 by the first recycling pipeline 10, and the heated gas is heated again by the circulating heating mechanism 9, and then the secondarily heated gas is conveyed to the one of the hot gas channels 3 through the second recycling pipeline 11, so as to realize heat recycling and reduce energy consumption.

[0040] The above is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above, and any change, modification, replacement, combination, simplification made without departing from the spirit and principles of the present application should be an equivalent replacement method, which is included in the protection scope of the present application.

Claims

1. An on-line heating air-bag forming apparatus capable of heat recovery, characterized by, The forming die, a high-temperature gas heating mechanism for heating the pipe, and a heat recycling mechanism for recycling heat; The forming die is provided with a die cavity and a hot gas passage communicated with the die cavity, and the hot gas passage comprises a hot gas inlet passage and a hot gas outlet passage; The high-temperature gas heating mechanism is communicated with the hot gas inlet passage; The heat recycling mechanism comprises a circulating heating mechanism and a recycling pipeline, and the recycling pipeline is provided with two first and second recycling pipelines, the first recycling pipeline is connected between the circulating heating mechanism and the hot gas outlet passage, and the second recycling pipeline is connected between the circulating heating mechanism and the hot gas inlet passage communicated with the high-temperature gas heating mechanism.

2. The on-line heating air-forming apparatus capable of heat recovery according to claim 1, wherein, The circulating heating mechanism is a high-frequency heating system.

3. The on-line heating air-bloated forming apparatus capable of heat recovery according to claim 1, wherein The high-temperature gas heating mechanism is a hearth heating mechanism.

4. The high temperature gas on-line heating blow molding apparatus according to claim 1, wherein The forming die comprises an upper die and a lower die, and the die cavity comprises an upper die cavity arranged in the upper die and a lower die cavity arranged in the lower die; the upper die and the lower die are both provided with the hot gas passage.

5. The on-line heating air-forming apparatus capable of heat recovery according to claim 4, wherein, The upper die cavity and the lower die cavity both comprise a die cavity middle part, a die cavity neck part and a die cavity end part, the die cavity neck part is communicated between the die cavity middle part and the die cavity end part; the die cavity neck part and the die cavity end part are both provided with two sections, the die cavity middle part is located between the two sections of the die cavity neck part; the sizes of the die cavity middle part and the die cavity end part are both greater than the size of the die cavity neck part.

6. The on-line heating air-forming apparatus capable of heat recovery according to claim 5, wherein, The hot gas passage comprises a plurality of first passages and a plurality of second passages, one end of the second passage is communicated with the first passage, and the other end of the second passage is respectively communicated with the die cavity middle part and the die cavity end part of the forming die.

7. The on-line heating air-forming apparatus capable of heat recovery according to claim 1, wherein The high-temperature gas heating mechanism comprises a gas heater and a hot gas delivery pipeline, and the gas heater is communicated with the hot gas passage through the hot gas delivery pipeline.

8. The on-line heating air-forming apparatus capable of heat recovery according to claim 7, wherein, The gas heater is communicated with the inlet of the hot gas passage of the lower die through the hot gas delivery pipeline, and the outlet of the hot gas passage of the upper die is connected with the first recycling pipeline.

9. The on-line heating air-forming apparatus capable of heat recovery according to claim 7, wherein, The high-temperature gas heating mechanism further comprises an exhaust pipeline communicated with another hot gas passage for conveying the heated waste gas to a designated place for centralized treatment.

10. The on-line heating gas inflation molding apparatus capable of recovering heat according to claim 1, wherein The online heating inflation forming device further comprises a sealing punch provided with a high-pressure passage connected with the high-pressure medium supply mechanism through a high-pressure pipeline.

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