CN111941780B - Injection mold with thermal compensation function - Google Patents
Injection mold with thermal compensation function Download PDFInfo
- Publication number
- CN111941780B CN111941780B CN202010843615.6A CN202010843615A CN111941780B CN 111941780 B CN111941780 B CN 111941780B CN 202010843615 A CN202010843615 A CN 202010843615A CN 111941780 B CN111941780 B CN 111941780B
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- oil tank
- electric contact
- thermal compensation
- water pump
- contact piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
Abstract
The invention discloses an injection mold with a thermal compensation function, which comprises an upper mold and a lower mold, wherein the upper mold module and a mold groove which are matched with each other are arranged on the upper mold and the lower mold, a mounting groove is longitudinally arranged at the bottom of the lower mold in a penetrating manner, a mounting plate is fixedly connected in the mounting groove, a thermal compensation oil tank and a cooling oil tank are arranged on the mounting plate, heating equipment and refrigerating equipment are respectively arranged in the thermal compensation oil tank and the cooling oil tank, a first water pump and a second water pump are respectively arranged on the thermal compensation oil tank and the cooling oil tank, water inlet ends of the first water pump and the second water pump are respectively communicated with the thermal compensation oil tank and the cooling oil tank, and an inner cavity which is matched with the mold groove is arranged in the lower mold. The invention has reasonable structure, can automatically heat the upper die and the lower die, ensures that high-temperature molten fluid enters the die cavity and is uniformly filled, improves the quality of injection molding parts, can automatically cool the die cavity, and is convenient for molding and demolding.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold with a thermal compensation function.
Background
In the injection molding process of an injection molding part, because the injected fluid is in a high-temperature melting state and the mold is usually at normal temperature, when the high-temperature melting fluid enters the mold, part of the fluid is rapidly solidified due to the mold with relatively low temperature, so that the phenomenon of nonuniform filling of the fluid in a mold cavity is caused, and the molding of the injection molding part is influenced, therefore, the injection mold with the thermal compensation function is designed to solve the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an injection mold with a thermal compensation function, which can automatically heat an upper mold and a lower mold, so that high-temperature molten fluid enters a mold cavity and is uniformly filled, the quality of an injection molding piece is improved, the mold cavity can be automatically cooled, and the molding and demolding are facilitated.
In order to achieve the purpose, the invention adopts the following technical scheme:
an injection mold with a thermal compensation function comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are provided with an upper mold module and a mold cavity which are matched, the bottom of the lower mold is longitudinally provided with a mounting groove in a penetrating manner, a mounting plate is fixedly connected in the mounting groove, a thermal compensation oil tank and a cooling oil tank are mounted on the mounting plate, a heating device and a refrigerating device are respectively mounted in the thermal compensation oil tank and the cooling oil tank, a first water pump and a second water pump are respectively mounted on the thermal compensation oil tank and the cooling oil tank, the water inlet ends of the first water pump and the second water pump are respectively communicated with the thermal compensation oil tank and the cooling oil tank, an inner cavity matched with the mold cavity is arranged in the lower mold, the water outlet ends of the first water pump and the second water pump, the thermal compensation oil tank and the cooling oil tank are respectively communicated with the inner cavity, and the bottom of the upper mold is fixedly connected with four guide columns, the lower die is provided with guide grooves matched with the four guide columns, one of the guide grooves is internally provided with a starting mechanism, the upper die module is embedded with an electric heating compensation device, and the lower die is internally provided with a control mechanism arranged close to the inner cavity.
Preferably, the lower die is provided with a first water pipe communicated with the inner cavity, the other end of the first water pipe is provided with a three-way pipe, the three-way pipe is communicated with the thermal compensation oil tank through a first short pipe, the first short pipe is provided with a first electromagnetic valve, the other end of the three-way pipe is provided with a second water pipe, the second water pipe is communicated with the cooling oil tank, the second water pipe is provided with a second electromagnetic valve, the water outlet end of the first water pump is provided with a third water pipe, the third water pipe penetrates through the lower die and is communicated with the other end of the inner cavity, the water outlet end of the second water pump is communicated with the third water pipe through a third short pipe, the third water pipe is provided with a third electromagnetic valve, and the third short pipe is provided with a fourth electromagnetic valve.
Preferably, the third electromagnetic valve is arranged close to the first water pump.
Preferably, the starting mechanism comprises a first electric contact piece connected with the inner wall of the guide groove in a sliding mode, a return spring is fixedly connected between the bottom of the first electric contact piece and the inner bottom of the guide groove, and a second electric contact piece and a third electric contact piece are arranged on the inner wall of the guide groove.
Preferably, the second electrical contact is located below the third electrical contact, and the length of the second electrical contact is greater than the length of the third electrical contact.
Preferably, the first electric contact and the second electric contact are electrically connected with the first water pump, the first electromagnetic valve and the third electromagnetic valve, and the first electric contact and the third electric contact are electrically connected with the second water pump, the second electromagnetic valve and the fourth electromagnetic valve.
Preferably, the control mechanism is arranged in a groove in the upper end of the lower die, a fourth electric contact is connected in the groove in a sliding mode, a memory spring is fixedly connected between the fourth electric contact and the inner bottom of the groove, and a fifth electric contact located above the fourth electric contact is fixedly connected in the groove.
Preferably, the fourth electrical contact and the fifth electrical contact are electrically connected to the electric heating compensation device.
Compared with the prior art, the invention has the beneficial effects that:
1. through the cooperation of guide post and guide way, more stable when can making last mould and lower mould laminating, the guide post also regards as trigger switch simultaneously, realizes the control to first water pump and second water pump.
2. The cooling oil through the heating can heat the lower mould, thereby realize the thermal compensation processing to the lower mould, the lower mould is through the thermal compensation processing back, then memory spring is heated the extension, thereby can drive fourth electric contact and upwards remove and offset with fifth electric contact, electric heating compensation arrangement circular telegram this moment, so can carry out the thermal compensation processing to last mould, so can effectually go up mould and lower mould and carry out effectual thermal compensation processing, it is even to fill after making the fluid of high temperature melting form get into the die cavity, improve the quality of injection molding.
3. The second water pump conveys the cooling oil in the cooling oil tank into the inner cavity through the third short pipe and the third water pipe, so that the lower die can be cooled, the injection molding part can be demoulded conveniently, and the demoulding efficiency is improved; the heated cooling oil and the cooling oil in the inner cavity flow into the cooling oil tank again through the first water pipe, the three-way pipe and the second water pipe; the cooled lower die influences the memory spring, namely the temperature of the environment where the memory spring is located is reduced, the memory spring is restored to the original state, the fourth electric contact piece and the fifth electric contact piece are separated, the electric heating compensation device is powered off, and therefore electric power resources can be saved.
In conclusion, the automatic cooling device has a reasonable structure, can automatically heat the upper die and the lower die, enables high-temperature molten fluid to enter the die cavity and be uniformly filled, improves the quality of injection molding parts, can automatically cool the die cavity, and is convenient for molding and demolding.
Drawings
FIG. 1 is a schematic structural diagram of an injection mold with a thermal compensation function according to the present invention;
FIG. 2 is a schematic structural diagram of an injection mold with a thermal compensation function according to the present invention;
FIG. 3 is a schematic structural diagram of an injection mold with a thermal compensation function according to the present invention;
fig. 4 is a schematic structural diagram of an injection mold with a thermal compensation function according to the present invention.
In the figure: 1 upper die, 2 lower dies, 3 mounting grooves, 4 mounting plates, 5 thermal compensation oil tanks, 6 cooling oil tanks, 7 heating equipment, 8 refrigerating equipment, 9 three-way pipes, 10 second electromagnetic valves, 11 first electromagnetic valves, 12 first water pumps, 13 second water pipes, 14 first water pipes, 15 inner cavities, 16 third water pipes, 17 third electromagnetic valves, 18 second water pumps, 19 fourth electromagnetic valves, 20 guide grooves, 21 guide posts, 22 electric heating compensation devices, 23 reset springs, 24 first electric contact pieces, 25 second electric contact pieces, 26 third electric contact pieces, 27 grooves, 28 fourth electric contact pieces, 29 memory springs and 30 fifth electric contact pieces.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an injection mold with thermal compensation function, including last mould 1 and lower mould 2, upward be equipped with assorted last mould module and die cavity on mould 1 and the lower mould 2, the bottom of lower mould 2 vertically runs through and is equipped with mounting groove 3, fixedly connected with mounting panel 4 in the mounting groove 3, can install thermal compensation oil tank 5 and cooling oil tank 6 respectively through mounting panel 4, reduce between it and the influence to lower mould 2, mounting panel 4 is connected with the inner wall of mounting groove 3 through the bolt, and mounting panel 4 is the heat insulator, do not conduct heat nor do not electrically conduct.
A thermal compensation oil tank 5 and a cooling oil tank 6 are mounted on the mounting plate 4, heating equipment 7 and refrigerating equipment 8 are mounted in the thermal compensation oil tank 5 and the cooling oil tank 6 respectively, a first water pump 12 and a second water pump 18 are mounted on the thermal compensation oil tank 5 and the cooling oil tank 6 respectively, and cooling oil can be pumped through the first water pump 12 and the second water pump 18; the water inlet ends of the first water pump 12 and the second water pump 18 are respectively communicated with the thermal compensation oil tank 5 and the cooling oil tank 6, and the connection between the two can be realized through metal pipes.
An inner cavity 15 matched with the die cavity is arranged in the lower die 2, the water outlet ends of a first water pump 12 and a second water pump 18, a thermal compensation oil tank 5 and a cooling oil tank 6 are communicated with the inner cavity 15, the lower die 2 is provided with a first water pipe 14 communicated with the inner cavity 15, the other end of the first water pipe 14 is provided with a three-way pipe 9, the three-way pipe 9 is communicated with the thermal compensation oil tank 5 through a first short pipe, the first short pipe is provided with a first electromagnetic valve 11, the other end of the three-way pipe 9 is provided with a second water pipe 13, the second water pipe 13 is communicated with the cooling oil tank 6, the second water pipe 13 is provided with a second electromagnetic valve 10, the water outlet end of the first water pump 12 is provided with a third water pipe 16, the third water pipe 16 penetrates through the lower die 2 and is communicated with the other end of the inner cavity 15, the water outlet end of the second water pump 18 is communicated with the third water pipe 16 through the third short pipe, and the third electromagnetic valve 17 is arranged on the third water pipe 16, the third electromagnetic valve 17 is arranged close to the first water pump 12; the third short pipe is provided with a fourth electromagnetic valve 19, so that the flow of cooling oil in the inner cavity 15 can be realized, and the effects of thermal compensation and cooling can be realized.
The bottom of the upper die 1 is fixedly connected with four guide posts 21, the lower die 2 is provided with guide grooves 20 matched with the four guide posts 21, a starting mechanism is arranged in one guide groove 20 and comprises a first electric contact piece 24 in sliding connection with the inner wall of the guide groove 20, a reset spring 23 is fixedly connected between the bottom of the first electric contact piece 24 and the inner bottom of the guide groove 20, and the inner wall of the guide groove 20 is provided with a second electric contact piece 25 and a third electric contact piece 26; the outside of the return spring 23 is insulated, and the bottom of the corresponding guide post 21 abutting against the first electric contact piece 24 is insulated.
The second electric contact piece 25 is positioned below the third electric contact piece 26, and the second electric contact piece 25 and the third electric contact piece 26 are embedded and installed on the inner wall of the guide groove 20, so that the movement of the guide post 21 and the first electric contact piece 24 is not influenced; and the length of the second electrical contact 25 is greater than the length of the third electrical contact 26, so that the first electrical contact 24 and the second electrical contact 25 have a sufficiently long time to contact, so that the lower mold 2 can be thermally compensated before the upper mold 1 and the lower mold 2 are not attached.
The first electric contact piece 24 and the second electric contact piece 25 are electrically connected with the first water pump 12, the first electromagnetic valve 11 and the third electromagnetic valve 17, the first electric contact piece 24 and the third electric contact piece 26 are electrically connected with the second water pump 18, the second electromagnetic valve 10 and the fourth electromagnetic valve 19, namely the second water pump 18, the second electromagnetic valve 10 and the fourth electromagnetic valve 19 are connected in series, and the work and the closing of the electromagnetic valves can be controlled simultaneously.
An electric heating compensation device 22 is embedded in the upper die module, and the electric heating compensation device 22 can be an electric heating wire and the like; a control mechanism arranged close to the inner cavity 15 is arranged in the lower die 2, the control mechanism comprises a groove 27 arranged at the upper end of the lower die 2, a fourth electric contact piece 28 is connected in the groove 27 in a sliding manner, a memory spring 29 is fixedly connected between the fourth electric contact piece 28 and the inner bottom of the groove 27, a fifth electric contact piece 30 positioned above the fourth electric contact piece 28 is fixedly connected in the groove 27, and the fourth electric contact piece 28 and the fifth electric contact piece 30 are electrically connected with the electric heating compensation device 22; since the fourth and fifth electric contacts 28 and 30 are provided on the lower and upper dies 2 and 1, respectively, i.e. separated from each other, with the electric heating compensation device 22, it is possible to perform the operation and the shutdown of the electric heating compensation device 22 by wireless control.
In the invention, when in use, the upper die 1 moves downwards under external power, at the same time, the four guide posts 21 move downwards and extend into the guide grooves 20, when the guide posts 21 move downwards, the guide posts 21 abut against the first electric contact piece 24 and drive the guide posts to move downwards, at the same time, the first electric contact piece 24 is separated from the third electric contact piece 26, the second water pump 18 is powered off and stops working, when the first electric contact piece 24 abuts against the second electric contact piece 25, the second water pump 12, the first electromagnetic valve 11 and the fourth electromagnetic valve 19 are powered on and opened, the first water pump 12 conveys the heated cooling oil in the thermal compensation oil tank 5 into the inner cavity 15 through the third water pipe 16, when the inner cavity 15 is filled with the heated cooling oil, the lower die 2 can be heated through the heated cooling oil, so that the thermal compensation treatment on the lower die 2 is realized, and after the thermal compensation treatment on the lower die 2, the memory spring 29 is heated and extended, thereby can drive fourth electric contact 28 and upwards remove and offset with fifth electric contact 30, electric heating compensation arrangement 22 circular telegram this moment, so can carry out the thermal compensation to last mould 1 and handle, so can effectually go up mould 1 and lower mould 2 and carry out effectual thermal compensation and handle, make the fluid of high temperature melting form fill after getting into the die cavity evenly, improve the quality of injection molding.
After the injection molding is finished, the upper die 1 drives the guide post 21 to move upwards, the first electric contact piece 24 moves upwards under the action of the reset spring 23, when the guide post 21 does not abut against the first electric contact piece 24, the first electric contact piece 24 is completely reset, the first electric contact piece 24 does not abut against the second electric contact piece 25, and the second water pump 12, the first electromagnetic valve 11 and the fourth electromagnetic valve 19 are powered off to inform work; at the moment, the first electric contact piece 24 is abutted against the third electric contact piece 26, the second water pump 18, the second electromagnetic valve 10 and the fourth electromagnetic valve 19 work in an electrified mode, the second water pump 18 conveys cooling oil in the cooling oil tank 6 into the inner cavity 15 through the third short pipe and the third water pipe 16, and therefore the lower die 2 can be cooled, demolding of injection molded parts is facilitated, and demolding efficiency is improved; the heated cooling oil in the inner cavity 15 and the cooling oil flow into the cooling oil tank 6 again through the first water pipe 14, the three-way pipe 9 and the second water pipe 13; the cooled lower die 2 affects the memory spring 29, that is, the temperature of the environment where the memory spring 29 is located is reduced, the memory spring 29 returns to the original state, the fourth electric contact piece 28 and the fifth electric contact piece 30 are separated, and the electric heating compensation device 22 is powered off, so that the electric power resource can be saved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides an injection mold with thermal compensation function, includes mould (1) and lower mould (2), its characterized in that, be equipped with assorted last mould module and die cavity on last mould (1) and lower mould (2), the bottom of lower mould (2) vertically runs through and is equipped with mounting groove (3), fixedly connected with mounting panel (4) in mounting groove (3), install thermal compensation oil tank (5) and cooling oil tank (6) on mounting panel (4), install firing equipment (7) and refrigeration plant (8) in thermal compensation oil tank (5) and cooling oil tank (6) respectively, install first water pump (12) and second water pump (18) on thermal compensation oil tank (5) and cooling oil tank (6) respectively, the end of intaking of first water pump (12) and second water pump (18) communicates with thermal compensation oil tank (5) and cooling oil tank (6) each other respectively, an inner cavity (15) matched with the die cavity is formed in the lower die (2), the water outlet ends of the first water pump (12) and the second water pump (18), the thermal compensation oil tank (5) and the cooling oil tank (6) are communicated with the inner cavity (15), four guide posts (21) are fixedly connected to the bottom of the upper die (1), guide grooves (20) matched with the four guide posts (21) are formed in the lower die (2), a starting mechanism is arranged in one of the guide grooves (20), an electric heating compensation device (22) is embedded in the upper die module, and a control mechanism arranged close to the inner cavity (15) is arranged in the lower die (2);
the starting mechanism comprises a first electric contact piece (24) in sliding connection with the inner wall of the guide groove (20), a reset spring (23) is fixedly connected between the bottom of the first electric contact piece (24) and the inner bottom of the guide groove (20), a second electric contact piece (25) and a third electric contact piece (26) are arranged on the inner wall of the guide groove (20), the second electric contact piece (25) is located below the third electric contact piece (26), and the length of the second electric contact piece (25) is larger than that of the third electric contact piece (26);
control mechanism is including setting up in recess (27) of lower mould (2) upper end, sliding connection has fourth electric contact (28) in recess (27), fixedly connected with memory spring (29) between the interior bottom of fourth electric contact (28) and recess (27), fixedly connected with is located fifth electric contact (30) of fourth electric contact (28) top in recess (27).
2. The injection mold with the thermal compensation function according to claim 1, wherein the lower mold (2) is provided with a first water pipe (14) communicated with the inner cavity (15), the other end of the first water pipe (14) is provided with a three-way pipe (9), the three-way pipe (9) is communicated with the thermal compensation oil tank (5) through a first short pipe, the first short pipe is provided with a first electromagnetic valve (11), the other end of the three-way pipe (9) is provided with a second water pipe (13), the second water pipe (13) is communicated with the cooling oil tank (6), the second water pipe (13) is provided with a second electromagnetic valve (10), the water outlet end of the first water pump (12) is provided with a third water pipe (16), and the third water pipe (16) penetrates through the lower mold (2) and is communicated with the other end of the inner cavity (15), the water outlet end of the second water pump (18) is communicated with a third water pipe (16) through a third short pipe, a third electromagnetic valve (17) is installed on the third water pipe (16), and a fourth electromagnetic valve (19) is installed on the third short pipe.
3. An injection mould with thermal compensation function according to claim 2, characterized in that the third solenoid valve (17) is arranged close to the first water pump (12).
4. The injection mold with the thermal compensation function according to claim 1, wherein the first electric contact (24) and the second electric contact (25) are electrically connected with the first water pump (12), the first solenoid valve (11) and the third solenoid valve (17), and the first electric contact (24) and the third electric contact (26) are electrically connected with the second water pump (18), the second solenoid valve (10) and the fourth solenoid valve (19).
5. An injection mould with thermal compensation according to claim 1, characterized in that the fourth (28) and fifth (30) electrical contacts are electrically connected to an electrical heating compensation device (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010843615.6A CN111941780B (en) | 2020-08-20 | 2020-08-20 | Injection mold with thermal compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010843615.6A CN111941780B (en) | 2020-08-20 | 2020-08-20 | Injection mold with thermal compensation function |
Publications (2)
| Publication Number | Publication Date |
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| CN111941780A CN111941780A (en) | 2020-11-17 |
| CN111941780B true CN111941780B (en) | 2022-03-04 |
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| CN202010843615.6A Active CN111941780B (en) | 2020-08-20 | 2020-08-20 | Injection mold with thermal compensation function |
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| CN116901384B (en) * | 2023-09-06 | 2023-11-24 | 丹阳市华立兴汽车内饰件有限公司 | Automotive interior spare production and processing forming device |
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| CN110223873A (en) * | 2019-06-13 | 2019-09-10 | 公牛集团股份有限公司 | A kind of key switch |
| CN210705818U (en) * | 2020-04-24 | 2020-06-09 | 佛山市恒达模塑科技有限公司 | Injection mold with thermal compensation function |
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Effective date of registration: 20220209 Address after: 215002 Daxin science and Technology Park, Huguan District, Suzhou high tech Zone, Suzhou City, Jiangsu Province Applicant after: Courage mould plastic (Suzhou) Co.,Ltd. Address before: 510000 Panyu District, Guangzhou, Guangdong, Panyu District, No. 100, West Ring Road, outside the city. Applicant before: Zhang Wenbo |
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