CN219236064U

CN219236064U - Thermostatic control device of injection molding machine nozzle

Info

Publication number: CN219236064U
Application number: CN202222545524.1U
Authority: CN
Inventors: 李筱健; 徐国栋
Original assignee: Xiamen Huichuan Industry And Trade Co ltd
Current assignee: Xiamen Huichuan Industry And Trade Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-06-23
Anticipated expiration: 2032-09-26

Abstract

The utility model provides a thermostatic control device of an injection nozzle of an injection molding machine, which comprises an injection nozzle body and a heating layer covered on the periphery of the injection nozzle body, wherein a heat preservation layer is arranged on the outer side of the heating layer, a gap is formed between the heat preservation layer and the heating layer, at least 2 first partition boards distributed along the axial direction of the heating layer are uniformly arranged in the gap around the periphery of the heating layer, cooling unit areas are formed by surrounding the heat preservation layer and the heating layer between adjacent first partition boards, an input pipe is arranged in the middle of the cooling unit area of the heat preservation layer for inputting cooling medium, output pipes are arranged on two sides of the cooling unit area of the heat preservation layer, the two axial sides of the heating layer and the heat preservation layer are sealed by two side plates, the input pipe and the output pipe enter along the side plates on the same side, temperature probes are arranged in the area corresponding to each cooling unit area of the heating layer, and electromagnetic flow valves are arranged on a plurality of the input pipes.

Description

Thermostatic control device of injection molding machine nozzle

Technical Field

The utility model relates to the technical field of injection molding machines, in particular to a constant temperature control device of an injection nozzle of an injection molding machine.

Background

Injection molding machines are also known as injection molding machines or injection molding machines. It is a main forming equipment for making thermoplastic plastics or thermosetting plastics into various shaped plastic products by using plastic forming mould. The device is divided into vertical type, horizontal type and full-electric type. The injection molding machine heats the plastic, applies high pressure to the molten plastic, and injects the molten plastic to fill the mold cavity. The injection molding machine is the main production equipment of plastic and rubber products, and has the advantages of low cost, small volume, long service life, high automation degree, good reliability and the like in view of hydraulic pressure.

In the prior art, a nozzle body of an injection molding machine is used for injecting molten plastic raw materials into corresponding molds through a spray cavity, and forming and cooling are carried out to obtain required injection molding products. When the raw material in a molten state enters the spray cavity of the incidence nozzle body, the temperature of the raw material is required to be certain, and the raw material is ensured not to be solidified and frozen in the spray cavity, so that a heating layer is generally additionally arranged outside the incidence nozzle body, and the incidence nozzle body is heated in an electrothermal mode, so that the raw material is kept at a certain temperature.

However, different plastic products have different requirements on temperature, and have higher requirements on accuracy of temperature, the existing heating layer still has larger inertia on temperature control, and the fluctuation range of the actual temperature on the basis of the set temperature is larger, so that the requirements cannot be met.

In view of the above, the present inventors have specifically devised a thermostatic control device for injection nozzles of injection molding machines, and this has resulted therefrom.

Disclosure of Invention

In order to solve the problems, the technical scheme of the utility model is as follows:

the utility model provides a constant temperature control device of injection molding machine nozzle, including penetrating the mouth body and cover the zone of heating that establishes at penetrating the mouth body periphery, the zone of heating outside is equipped with the heat preservation, have the clearance between heat preservation and the zone of heating, the clearance is interior to encircle the zone of heating circumference evenly to be equipped with 2 at least along the first baffles of zone of heating axial distribution, and between the adjacent first baffles and heat preservation and zone of heating enclose and close and form the cooling unit district, the zone of heating is equipped with the input tube in cooling unit district middle part and is used for inputing the coolant, the zone of heating is equipped with the output tube in cooling unit district both sides, the zone of heating and zone of heating is closed by both sides board, input tube and output tube are followed homonymy curb plate and are got into, the zone that the zone of heating corresponds in each cooling unit district all is equipped with temperature probe, be equipped with electromagnetic flow valve on a plurality of input tubes, a plurality of temperature probes and electromagnetic flow valve are electrically connected same temperature probe and output of same temperature control chip respectively, and be located same input pipeline and electromagnetic flow valve and are same regulation group.

Preferably, the first partition is provided with 3 partitions dividing the gap into 3 equal cooling unit areas.

Preferably, the same cooling unit area is equally divided into a plurality of cooling unit cavities by a plurality of second partition boards along the axial direction of the heating layer, the input pipe is provided with an input hole in each cooling unit cavity, and the output pipe is provided with an output hole in each cooling unit cavity.

Preferably, the insulating layer is provided with yielding grooves distributed along the axial direction of the insulating layer at the distribution positions of the input pipe and the output pipe, and two ends of the yielding grooves are sealed by the side plates.

Preferably, the device also comprises a control panel, wherein a digital display screen and an input control area are arranged in the control panel, and the digital display screen is electrically connected with the output end of the temperature control chip and is used for displaying the real-time temperature t0 of the raw materials and the set threshold temperature t1; the input control area is electrically connected with the input end of the temperature control chip and is used for setting or changing the threshold temperature t1.

Preferably, the control panel is also provided with a warning lamp and an alarm device, and when the real-time temperature t0 is out of the range of t1 plus or minus 0.5 ℃, the warning lamp and the alarm device work to generate warning light and alarm sound.

Preferably, the front end of the nozzle body is provided with a spray cavity part, the periphery of the spray cavity part is sleeved with a thermochromic layer, and the thermochromic layer is fastened by a clamp.

Preferably, the rear end of the nozzle body is provided with a flange plate, and the nozzle body is connected to the injection molding machine through the flange plate.

Preferably, the cooling medium is cold water or cold source gas.

Preferably, the outer wall of the nozzle body is provided with a heat-insulating coating.

The utility model has the following advantages:

the temperature probe monitors the temperature of the material in real time, and if the real-time temperature is higher than the set threshold temperature, the temperature control chip controls the opening of the electromagnetic flow valve, and increases the flow of the cooling medium to cool; otherwise, when the real-time temperature is lower than the set threshold temperature, the temperature control chip adjusts the opening of the electromagnetic flow valve, so that the heating layer is continuously heated, the temperature is quickly and accurately adjusted, and finally the constant temperature is realized;

the synchronous reaction can be realized through the plurality of cooling unit areas and the cooling unit cavities, so that the temperature of the molten raw material can be reacted more quickly and accurately, and finally the constant temperature is realized;

through controlling the panel and making operating personnel can more directly perceived learn the temperature condition of raw materials to instruct operating personnel to carry out corresponding production operation better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.

Wherein:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the nozzle body of the present utility model;

FIG. 3 is a schematic cross-sectional view of the nozzle body of the present utility model;

FIG. 4 is a schematic view of a partial explosion configuration of the present utility model;

FIG. 5 is a schematic diagram of the connection principle of the present utility model;

fig. 6 is a schematic structural view of the control panel in the present utility model.

Description of the reference numerals:

1. a nozzle body; 11. a spray chamber part; 12. a thermochromic layer; 13. a clamp; 14. a flange plate; 2. a heating layer; 21. a temperature probe; 3. a heat preservation layer; 31. a relief groove; 4. a first separator; 41. a second separator; 5. a cooling unit region; 51. a cooling unit chamber; 6. an input tube; 61. an electromagnetic flow valve; 62. an input hole; 7. an output pipe; 8. a side plate; 9. a control panel; 91. a digital display screen; 92. an input control area; 93. a warning light.

Description of the embodiments

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 6, as a thermostatic control device of an injection nozzle of an injection molding machine according to a preferred embodiment of the present utility model, the thermostatic control device sequentially includes, from inside to outside, a nozzle body 1, a heating layer 2 covering the outer periphery of the nozzle body 1, and a heat insulation layer 3 disposed outside the heating layer 2, a gap is provided between the heat insulation layer 3 and the heating layer 2, at least 2 first partition plates 4 axially distributed along the heating layer 2 are uniformly disposed around the circumference of the heating layer 2 in the gap, cooling unit areas 5 are formed by surrounding the heat insulation layer 3 and the heating layer 2 between adjacent first partition plates 4, an input pipe 6 communicating with the cooling unit areas 5 is installed in the middle of the cooling unit areas 5 of the heat insulation layer 3, output pipes 7 communicating with the cooling unit areas 5 are installed on both sides of the cooling unit areas 5 of the heat insulation layer 3, both sides of the heating layer 2 and the heat insulation layer 3 are locked and sealed by two circular side plates 8 along the same side, temperature probes 21 are disposed in areas corresponding to the heating layer 2 along the heating unit areas of the heating layer 2, a plurality of the input pipe 6 and the output pipe 8 are located on the same side plate 8, a plurality of temperature probes 21 are located on the same temperature control circuit, and the same temperature control circuit are connected with the same temperature control circuit and the same temperature control circuit as the input circuit 61, and the temperature control circuit is connected with the electromagnetic circuit 61.

Specifically, in this embodiment, the first partition board 4 is provided with 3, and divides the gap into 3 equal cooling unit areas 5, and each cooling unit area 5 is in a fan-shaped ring shape corresponding to 1/3 circumference, and in this embodiment, the cooling medium is preferably cold source gas, that is, cold air, which is more easily obtained, and can conveniently realize dynamic adjustment of temperature.

Preferably, as shown in fig. 2 and 4, the same cooling unit area 5 is equally divided into a plurality of cooling unit cavities 51 by a plurality of second partition boards 41 along the axial direction of the heating layer 2, the input pipe 6 is provided with an input hole 62 in each cooling unit cavity 51, and the output pipe 7 is provided with an output hole (not shown in the drawings) in each cooling unit cavity 51, so that the plurality of cooling unit cavities 51 can realize rapid coverage of cold air on the heating layer 2 and rapid temperature adjustment.

Preferably, as shown in fig. 3 and 4, the distribution positions of the input pipe 6 and the output pipe 7 of the heat insulation layer 3 are respectively provided with a yielding groove 31 distributed along the axial direction of the heat insulation layer, and two ends of the yielding groove 31 are sealed by the side plates 8, so that the input pipe 6 and the output pipe 7 are convenient to install and detach.

Preferably, as shown in fig. 5 and 6, the temperature control device further comprises a control panel 9, wherein a digital display screen 91 and an input control area 92 are arranged in the control panel 9, and the digital display screen 91 is electrically connected with the output end of the temperature control chip and is used for displaying the real-time temperature t0 of the raw materials and the set threshold temperature t1; the input control area 92 is electrically connected to an input terminal of the temperature control chip for setting or changing the threshold temperature t1.

Further, the control panel 9 is further provided with a warning lamp 93 and an alarm device (not shown in the figure), and when the real-time temperature t0 is out of the range of t1±0.5 ℃, the warning lamp 93 and the alarm device work to generate light and alarm sound of the warning lamp 93.

Preferably, in combination with fig. 1, the front end of the nozzle body 1 is provided with a spray cavity 11, the periphery of the spray cavity 11 is sleeved with a thermochromic layer 12, the thermochromic layer 12 is fastened by a clamp 13, the thermochromic layer 12 is formed by compounding organic reversible thermochromic microcapsules with a base material, the organic reversible thermochromic microcapsules can basically cover extrusion temperature monitoring required by various products of an injection molding machine according to the temperature sensing range (20-200 ℃) which can be realized by different materials, and the organic reversible thermochromic microcapsules with corresponding temperature ranges are selected by producing different products so that the color changing temperature is smaller than the maximum bearable temperature of raw materials, so that when the temperature is higher than the temperature, the organic reversible thermochromic microcapsules are used for thermochromic, and warning on-site operators so that the on-site operators can react in time.

Preferably, as shown in fig. 1, a flange 14 is arranged at the rear end of the nozzle body 1, and the nozzle body 1 is connected to an injection molding machine through the flange 14.

Preferably, the outer wall of the nozzle body 1 is provided with a heat-insulating coating (not shown in the figure), so that the heat-insulating effect of the nozzle body 1 is further enhanced, and the effect of raw material extrusion is improved.

In particular, as a reasonable expansion of the scheme, the heating layer 2 can be correspondingly divided into a plurality of units corresponding to the unit cooling cavities, so that more accurate control of temperature is realized.

The working process of the utility model is as follows:

after the injection molding machine is started, setting a threshold temperature t1 according to the raw material characteristics of the production product corresponding to the shift through the control panel 9, displaying a real-time temperature t0 monitored by the temperature probe 21 through the digital display screen 91, simultaneously controlling the heating layer 2 and the electromagnetic flow valve 61 by the temperature control chip at the moment, enabling the real-time temperature t0 to be consistent with the threshold temperature t1, and controlling the opening of the electromagnetic flow valve 61 to be increased by the temperature control chip if the real-time temperature t0 is greater than the threshold temperature t1, and increasing the flow of a cooling medium to cool; otherwise, when the real-time temperature t0 is lower than the threshold temperature t1, the temperature control chip adjusts and reduces the opening of the electromagnetic flow valve 61, so that the heating layer 2 is continuously heated, the raw material temperature is quickly and accurately adjusted, and finally the constant temperature is realized.

In summary, the utility model has the advantages of reducing temperature inertia, realizing quick adjustment of the temperature of the injection nozzle body 1 of the injection molding machine, realizing constant temperature and improving the production quality of the product quality.

While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the above embodiments, but is capable of being modified or applied directly to other applications without modification, as long as various insubstantial modifications of the method concept and technical solution of the utility model are adopted, all within the scope of the utility model.

Claims

1. The utility model provides a constant temperature control device of injection molding machine nozzle, includes nozzle body (1) and covers heating layer (2) of establishing in nozzle body (1) periphery, its characterized in that, heating layer (2) outside is equipped with heat preservation (3), have the clearance between heat preservation (3) and heating layer (2), encircle in the clearance heating layer (2) circumference evenly is equipped with at least 2 first baffle (4) along heating layer (2) axial distribution, adjacent between first baffle (4) and heat preservation (3) and heating layer (2) enclose and form cooling unit district (5), heat preservation (3) are equipped with input tube (6) in cooling unit district (5) middle part and are used for the input cooling medium, heat preservation (3) are equipped with output tube (7) in cooling unit district (5) both sides, the axial both sides of heating layer (2) and heat preservation (3) are sealed by both sides board (8), input tube (6) and output tube (7) are followed homonymy curb plate (8) and are got into, heating layer (2) and heat preservation (3) and heat preservation (5) enclose and are closed and are equipped with a plurality of electromagnetic flow control valves (61) in the same temperature control area (21) respectively on each cooling unit district, each temperature control valve (21) and input end respectively, and the temperature probe (21) and the electromagnetic flow valve (61) which are positioned on the same input pipe (6) line are in the same adjusting group.

2. A thermostatic control device for injection molding machine nozzle according to claim 1, characterized in that the first partition (4) is provided with 3 dividing the gap into 3 equal cooling unit areas (5).

3. The thermostatic control device of injection molding machine nozzle according to claim 1, wherein the same cooling unit area (5) is equally divided into a plurality of cooling unit cavities (51) along the axial direction of the heating layer (2) by a plurality of second partition boards (41), the input pipe (6) is provided with an input hole (62) in each cooling unit cavity (51), and the output pipe (7) is provided with an output hole in each cooling unit cavity (51).

4. The thermostatic control device of an injection nozzle of an injection molding machine according to claim 1, wherein the heat preservation layer (3) is provided with yielding grooves (31) distributed along the axial direction at the distribution positions of the input pipe (6) and the output pipe (7), and two ends of the yielding grooves (31) are sealed by side plates (8).

5. The thermostatic control device of the injection nozzle of the injection molding machine according to claim 1, further comprising a control panel (9), wherein a digital display screen (91) and an input control area (92) are arranged in the control panel (9), and the digital display screen (91) is electrically connected with the output end of the temperature control chip and is used for displaying the real-time temperature t0 of raw materials and the set threshold temperature t1; the input control area (92) is electrically connected with the input end of the temperature control chip and is used for setting or changing the threshold temperature t1.

6. The thermostatic control device of the injection molding machine nozzle according to claim 5, wherein the control panel (9) is further provided with a warning lamp (93) and an alarm device.

7. The thermostatic control device of the injection nozzle of the injection molding machine according to claim 1, wherein the front end of the injection nozzle body (1) is provided with a spray cavity part (11), the periphery of the spray cavity part (11) is sleeved with a thermochromic layer (12), and the thermochromic layer (12) is fastened by a clamp (13).

8. The thermostatic control device of the injection nozzle of the injection molding machine according to claim 1, wherein a flange (14) is arranged at the rear end of the injection nozzle body (1), and the injection nozzle body (1) is connected to the injection molding machine through the flange (14).

9. The thermostatic control device of an injection molding machine nozzle according to claim 1, wherein the cooling medium is cold water or cold source gas.

10. The thermostatic control device of the injection molding machine nozzle according to claim 1, wherein the outer wall of the nozzle body (1) is provided with a heat-insulating coating.