High-precision temperature control plastic bottle preform injection molding device

Abstract

The utility model belongs to the technical field of plastic bottle production, and particularly relates to a high-precision temperature control plastic bottle blank injection molding device which comprises a blow molding mechanism, a base and a workbench fixedly connected to the top of the base, a lower mold is fixedly connected to the top of the workbench, and an upper mold is detachably and fixedly connected to the top of the lower mold. A precise temperature control mechanism is arranged among the lower mold, the workbench and the base, the blow molding mechanism is arranged above the upper mold, an injection molding opening is formed in the top of the upper mold, the top of the workbench is fixedly connected with a controller, the blow molding mechanism comprises a mounting plate, and the bottom of the mounting plate is fixedly communicated with an air blowing pump. The device is reasonable in structural design, heating and cooling can be switched through the precise temperature control mechanism, the practicability of the device is improved, the temperature during heating and the temperature during cooling can be precisely regulated and controlled, the plastic bottle forming quality and the machining efficiency are greatly improved, and reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic bottle production, especially to a high-precision temperature control plastic bottle embryo injection molding device. BACKGROUND

[0002] Injection molding is a method of producing industrial products. Products are usually made of rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and compression molding, and the plastic bottle embryo is finally molded by high-pressure gas blowing during the injection molding process.

[0003] After searching: a plastic bottle embryo injection molding device with the authorized announcement number CN216443036U, including the top surface of the bottom plate fixedly connected with the vertical plate, the top surface of the bottom plate movably connected with the movable plate, the number of the movable plate is two, the inner side of two movable plates is fixedly connected with a number one template and a number two template.

[0004] However, the plastic bottle embryo injection molding device in the above still has some shortcomings. During the injection molding process of the plastic bottle embryo, the mold needs to be heated and cooled for post-molding. However, the above-mentioned device cannot accurately control the temperature of heating and cooling, which reduces the quality of the plastic bottle embryo molding. Therefore, we propose a high-precision temperature control plastic bottle embryo injection molding device to solve the above problems. Utility model content

[0005] The utility model aims at solving the above-mentioned shortcomings and proposes a high-precision temperature control plastic bottle embryo injection molding device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A high-precision temperature control plastic bottle embryo injection molding device, comprising a blowing mechanism, a base and a workbench fixedly connected to the top of the base, the top of the workbench is fixedly connected with a lower mold, the top of the lower mold is detachably fixedly connected with an upper mold, a precise temperature control mechanism is arranged between the lower mold, the workbench and the base, the blowing mechanism is arranged above the upper mold, the top of the upper mold is provided with an injection port, and the top of the workbench is fixedly connected with a controller.

[0008] As preferred by the utility model, the blowing mechanism comprises a mounting plate, the bottom of the mounting plate is fixedly connected with a blowing pump, the bottom of the blowing pump is fixedly connected with a blowing pipe, and the blowing pipe is movably sleeved in the injection port.

[0009] As preferred by the utility model, the bottom of the mounting plate is screw-connected with four screws.

[0010] The lower mold is fixedly connected with four vertical columns at the top, the upper mold is slidably sleeved outside the four vertical columns, and nuts are threadedly sleeved outside the vertical columns and are movably abutted against the top of the upper mold.

[0011] The precision temperature control mechanism comprises a circulating pump and a heat exchanger fixedly connected at the top of the base, an annular cavity formed in the lower mold, and a temperature sensor fixedly communicated on the inner wall of the lower mold, one water inlet pipe is fixedly communicated between the circulating pump and the annular cavity, a plurality of flow guide rings are fixedly connected in the annular cavity, a through hole is formed in the top of the flow guide ring, a water outlet pipe is fixedly communicated on one side of the inner wall of the annular cavity, one end of the water outlet pipe is fixedly communicated with a pipe one, a pipe two is fixedly communicated between the heat exchanger and the circulating pump, a lower electromagnetic valve is arranged on the pipe one and the pipe two, a flow meter is arranged on the water inlet pipe, a frequency converter is arranged on one side of the circulating pump, and the frequency converter, the circulating pump, the flow meter and the heat exchanger are electrically connected with the controller.

[0012] The precision temperature control mechanism further comprises a heating box fixedly connected at the top of the heat exchanger, a pipe three is fixedly communicated between the heating box and the pipe two, a pipe four is fixedly communicated between the heating box and the water outlet pipe, and an upper electromagnetic valve is arranged on the pipe four and the pipe three.

[0013] The top inner wall and the bottom inner wall of the heating box are both fixedly connected with heating plates.

[0014] The front side of the heat exchanger is fixedly connected with a heat dissipation plate, and the front side of the heat dissipation plate is fixedly connected with a plurality of fins.

[0015] In the injection blow molding process, the temperature in the upper and lower molds needs to be controlled, two lower electromagnetic valves are closed and two upper electromagnetic valves are opened, so that the circulating pump is connected with the heating box, according to the temperature measured by the temperature sensor, when the temperature is less than the set value, the power output by the heating plate can be increased through the controller, so that the water temperature after heating is higher, at the same time, the flow rate of water circulation can be measured through the flow meter, and according to the flow rate, the power output by the circulating pump is regulated and controlled through the controller and the frequency converter, so that the size of the flow rate can be changed, the upper and lower molds are quickly heated by the high-temperature and high-flow-rate water flow, so that the temperature reaches the set range, and blow molding is carried out at the temperature, so that the blow molding effect is better.

[0016] The utility model discloses a high accuracy temperature control plastic bottle embryo injection molding device, when needing cooling and shaping after blow molding, close two upper electromagnetic valves, open two lower electromagnetic valves, make that circulating pump and heat exchanger intercommunication, through the water temperature of setting cooling, the power of heat exchanger is regulated and controlled to the effect of heat exchanger refrigeration, according to the flow rate of flowmeter feedback, the power of circulating pump output is regulated and controlled, and then under low water temperature and high flow rate, the temperature in the upper and lower moulds can be reduced to the specified temperature interval, the plastic bottle can be cooled quickly and efficiently in the low temperature interval, and the cooling efficiency is improved.

[0017] The utility model discloses a structure design is reasonable, through accurate temperature control mechanism, can switch between heating and refrigeration, improve the practicability of device, and accurate temperature control when heating and cooling can be carried out, greatly improve the quality of plastic bottle forming and the efficiency of processing, and high reliability. ACCURACY

[0018] Figure 1 The utility model discloses a high accuracy temperature control plastic bottle embryo injection molding device's structure schematic diagram is provided;

[0019] Figure 2 The utility model discloses a high accuracy temperature control plastic bottle embryo injection molding device's structure schematic diagram is provided;

[0020] Figure 3 The utility model discloses a high accuracy temperature control plastic bottle embryo injection molding device's structure schematic diagram is provided;

[0021] Figure 4 The utility model discloses a high accuracy temperature control plastic bottle embryo injection molding device's structure schematic diagram is provided;

[0022] In the drawing: 1, base;2, workbench;3, lower mould;4, upper mould;5, nut;6, stand;7, mounting plate;8, screw;9, accurate temperature control mechanism;10, blow pump;11, blow molding pipe;12, injection port;13, controller;901, temperature sensor;902, annular cavity;903, flow guide ring;904, through -hole;905, water outlet pipe;906, water inlet pipe;907, circulating pump;908, frequency converter;909, pipe two;910, lower electromagnetic valve;911, heat exchanger;912, fin;913, heat sink;914, pipe one;915, pipe four;916, upper electromagnetic valve;917, heating box;918, pipe three;919, flowmeter;920, heating plate. Specific implementation

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Figures 1-4 A high-precision temperature control plastic bottle embryo injection molding device, comprising a blow molding mechanism, a base 1 and a workbench 2 fixedly connected to the top of the base 1, the top of the workbench 2 is fixedly connected with a lower mold 3, the top of the lower mold 3 is detachably fixedly connected with an upper mold 4, a precision temperature control mechanism 9 is arranged between the lower mold 3, the workbench 2 and the base 1, the blow molding mechanism is arranged above the upper mold 4, the top of the upper mold 4 is provided with an injection port 12, and the top of the workbench 2 is fixedly connected with a controller 13.

[0025] Further, with reference to Figure 1 And Figure 2 The blow molding mechanism comprises a mounting plate 7, the bottom of the mounting plate 7 is fixedly connected with a blowing pump 10, the bottom of the blowing pump 10 is fixedly connected with a blow molding pipe 11, the blow molding pipe 11 is movably sleeved in the injection port 12, and the blowing pump 10 in the blowing mechanism blows high-pressure gas into the blow molding pipe 11 to perform blow molding work on the bottle embryo.

[0026] Further, the bottom of the mounting plate 7 is threadedly connected with four screws 8, which is beneficial to the mounting connection of the mounting plate 7 and the blowing pump 10.

[0027] Further, the top of the lower mold 3 is fixedly connected with four columns 6, the upper mold 4 is slidably sleeved on the outside of the four columns 6, the outside of the column 6 is threadedly sleeved with a nut 5, and the four nuts 5 are movably abutted on the top of the upper mold 4, which is beneficial to the fixing and disassembly between the upper and lower molds, so as to take and place the plastic bottle embryo.

[0028] Further, with reference to Figures 1-4The precision temperature control mechanism 9 comprises a circulating pump 907 and a heat exchanger 911 fixedly connected at the top of the base 1, an annular cavity 902 formed in the lower mold 3, and a temperature sensor 901 fixedly communicated on the inner wall of the lower mold 3, the same water inlet pipe 906 is fixedly communicated between the circulating pump 907 and the annular cavity 902, a plurality of flow guide rings 903 are fixedly connected in the annular cavity 902, a through hole 904 is formed in the top of the flow guide ring 903, a water outlet pipe 905 is fixedly communicated on one side of the inner wall of the annular cavity 902, one end of the water outlet pipe 905 is fixedly communicated with a pipe one 914, the pipe two 909 is fixedly communicated between the heat exchanger 911 and the circulating pump 907, the lower electromagnetic valve 910 is arranged on the pipe one 914 and the pipe two 909, the flow meter 919 is arranged on the water inlet pipe 906, the frequency converter 908 is arranged on one side of the circulating pump 907, the frequency converter 908, the circulating pump 907, the flow meter 919 and the heat exchanger 911 are electrically connected with the controller 13, and the precision temperature control mechanism 9 further comprises a heating box 917 fixedly connected at the top of the heat exchanger 911, the pipe three 918 is fixedly communicated between the heating box 917 and the pipe two 909, the pipe four 915 is fixedly communicated between the heating box 917 and the water outlet pipe 905, and the upper electromagnetic valve 916 is arranged on the pipe four 915 and the pipe three 918. The heating plate 920 is fixedly connected on the top inner wall and the bottom inner wall of the heating box 917.

[0029] By adopting the above scheme, in the injection blow molding process, the temperature in the upper and lower molds needs to be controlled, the two lower electromagnetic valves 910 are closed and the two upper electromagnetic valves 916 are opened, so that the circulating pump 907 is connected with the heating box 917, according to the temperature measured by the temperature sensor 901, when the temperature is less than the set value, the power output by the heating plate 920 can be increased through the controller 13, so that the water temperature after heating is higher, at the same time, the flow rate of water circulation can be measured through the flow meter 919, and according to the flow rate, the power output by the circulating pump 907 can be regulated and controlled through the controller 13 and the frequency converter 908, so as to change the size of the flow rate, the upper and lower molds are quickly heated by the high-temperature and high-flow-rate water flow, so that the temperature reaches the set range, and blow molding is performed at the temperature, so that the blow molding effect is better.

[0030] When cooling and shaping are needed after blow molding is completed, the two upper electromagnetic valves 916 are closed and the two lower electromagnetic valves 910 are opened, so that the circulating pump 907 is communicated with the heat exchanger 911, the power of the heat exchanger 911 is regulated and controlled through the set cooling water temperature, so as to regulate and control the refrigeration effect of the heat exchanger 911, according to the flow rate fed back by the flow meter, the power output by the circulating pump 907 is regulated and controlled, so that the temperature in the upper and lower molds can be quickly reduced in a specified temperature range at a low water temperature and a high flow rate, and the plastic bottle can be quickly and efficiently cooled in the low temperature range, so as to improve the cooling efficiency.

[0031] Further, the front side of the heat exchanger 911 is fixedly connected with a heat dissipation plate 913, and the front side of the heat dissipation plate 913 is fixedly connected with a plurality of fins 912, so that the heat exchanger 911 can be efficiently cooled, and the refrigeration effect is better.

[0032] In the utility model, the upper die 4 is buckled on the top of the lower die 3, and four nuts 5 are tightened, so that the four nuts 5 are tightly abutted on the top of the upper die 4, the upper and lower dies are connected together, then the blowing pump 10 in the blowing mechanism blows high-pressure gas into the blow molding pipe 11 to perform blow molding operation on the bottle blank, in the injection blow molding process, the temperature in the upper and lower dies needs to be controlled, two lower electromagnetic valves 910 are closed and two upper electromagnetic valves 916 are opened, so that the circulating pump 907 is connected with the heating box 917, according to the temperature measured by the temperature sensor 901, when the temperature is less than the set value, the power output by the heating plate 920 can be increased through the controller 13, so that the water temperature after heating is higher, at the same time, the flow rate of water circulation can be measured through the flowmeter 919, and according to the flow rate, the power output by the circulating pump 907 is regulated and controlled through the controller 13 and the frequency converter 908, so that the flow rate can be changed, the upper and lower dies are quickly heated by the high-temperature and high-flow-rate water flow, so that the temperature reaches the set range, and blow molding is performed at the temperature, so that the blow molding effect is better.

[0033] When cooling and shaping are needed after blow molding is completed, the two upper electromagnetic valves 916 are closed and the two lower electromagnetic valves 910 are opened, so that the circulating pump 907 is communicated with the heat exchanger 911, the power of the heat exchanger 911 is regulated and controlled through the set cooling water temperature, so as to regulate and control the refrigeration effect of the heat exchanger 911, according to the flow rate fed back by the flowmeter, the power output by the circulating pump 907 is regulated and controlled, so that the temperature in the upper and lower dies can be quickly reduced to the specified temperature range at low water temperature and high flow rate, the plastic bottle can be quickly and efficiently cooled in the low temperature range, and the cooling efficiency is improved.

Claims

1. A high-precision temperature-controlled plastic bottle embryo injection molding device, characterized in that, Including blow molding mechanism, base (1) and fixedly connected with the workbench (2) on the top of base (1), the top of workbench (2) is fixedly connected with lower mould (3), the top of lower mould (3) is detachably fixedly connected with upper mould (4), precision temperature control mechanism (9) is arranged between lower mould (3), workbench (2) and base (1), blow molding mechanism is arranged above upper mould (4), the top of upper mould (4) is provided with injection port (12), the top of workbench (2) is fixedly connected with controller (13).

2. The high-precision temperature-controlled plastic bottle preform injection molding device according to claim 1, characterized in that, The blow molding mechanism includes a mounting plate (7), the bottom of the mounting plate (7) is fixedly connected with a blowing pump (10), the bottom of the blowing pump (10) is fixedly connected with a blow molding pipe (11), and the blow molding pipe (11) is movably sleeved in the injection port (12).

3. The high-precision temperature-controlled plastic bottle preform injection molding device according to claim 2, characterized in that, The bottom of the mounting plate (7) is threadedly connected with four screws (8).

4. The high-precision temperature-controlled plastic bottle preform injection molding device according to claim 1, characterized in that, The top of the lower mould (3) is fixedly connected with four vertical columns (6), the upper mould (4) is slidably sleeved on the outer side of the four vertical columns (6), and the outer side of the vertical column (6) is threadedly sleeved with a nut (5), and the four nuts (5) are movably abutted on the top of the upper mould (4).

5. The high-precision temperature-controlled plastic bottle preform injection molding device according to claim 1, characterized in that, The precision temperature control mechanism (9) comprises a circulating pump (907) and a heat exchanger (911) fixedly connected on the top of the base (1), an annular cavity (902) formed in the lower mould (3), and a temperature sensor (901) fixedly connected on the inner wall of the lower mould (3), the circulating pump (907) and the annular cavity (902) are fixedly connected with the same water inlet pipe (906), a plurality of flow guide rings (903) are fixedly connected in the annular cavity (902), a through hole (904) is formed in the top of the flow guide ring (903), a water outlet pipe (905) is fixedly connected on one side of the inner wall of the annular cavity (902), one end of the water outlet pipe (905) is fixedly connected with a pipe one (914), the heat exchanger (911) and the circulating pump (907) are fixedly connected with a pipe two (909), the pipe one (914) and the pipe two (909) are provided with a lower electromagnetic valve (910), the water inlet pipe (906) is provided with a flow meter (919), one side of the circulating pump (907) is provided with a frequency converter (908), and the frequency converter (908), the circulating pump (907), the flow meter (919) and the heat exchanger (911) are electrically connected with the controller (13).

6. The high-precision temperature-controlled plastic bottle preform injection molding device according to claim 5, characterized in that, The precision temperature control mechanism (9) further comprises a heating box (917) fixedly connected on the top of the heat exchanger (911), a pipe three (918) fixedly connected between the heating box (917) and the pipe two (909), and a pipe four (915) fixedly connected between the heating box (917) and the water outlet pipe (905), the pipe four (915) and the pipe three (918) are provided with an upper electromagnetic valve (916).

7. The high-precision temperature-controlled plastic bottle preform injection molding device according to claim 6, characterized in that, The top inner wall and the bottom inner wall of the heating box (917) are fixedly connected with heating plates (920).

8. The high-precision temperature-controlled plastic bottle preform injection molding device according to claim 5, characterized in that, The front side of the heat exchanger (911) is fixedly connected with a heat dissipation plate (913), and the front side of the heat dissipation plate (913) is fixedly connected with a plurality of fins (912).

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