CN112318838A - Plastic injection mold convenient to cooling drawing of patterns - Google Patents
Plastic injection mold convenient to cooling drawing of patterns Download PDFInfo
- Publication number
- CN112318838A CN112318838A CN202011060335.4A CN202011060335A CN112318838A CN 112318838 A CN112318838 A CN 112318838A CN 202011060335 A CN202011060335 A CN 202011060335A CN 112318838 A CN112318838 A CN 112318838A
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- China
- Prior art keywords
- cooling
- injection molding
- demolding
- mold
- rod
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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
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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
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
Abstract
The invention discloses a plastic injection mold convenient for cooling and demolding, which comprises an injection molding device and a cooling device, the injection molding device comprises a box body, a lower die is arranged in the box body, an upper die is arranged above the upper die, the upper side of the upper die is connected with an electric telescopic rod, the upper end of the electric telescopic rod is arranged at the top of the box body, the middle part of the upper die is provided with an injection molding head, the injection molding head is connected with an injection molding flow passage, the upper end of the injection molding flow passage penetrates through the box body and is connected with an injection molding mechanism, the lower end of the injection molding head is communicated with a cavity, and the, the outside and the inside of the injection molding device are simultaneously cooled by combining air cooling and water cooling, the cooling speed is accelerated, the heat is taken away by utilizing the evaporation of water, the cooling effect is obvious, meanwhile, through the arrangement of the cooling device, hot water is cooled and recycled, and water resources are saved.
Description
Technical Field
The invention relates to the technical field of plastic injection molds, in particular to a plastic injection mold convenient for cooling and demolding.
Background
An injection mould is a tool for producing plastic products, and the principle is that hot melted plastics are injected into a cavity of an injection moulding machine under high pressure and then cooled to obtain a finished product. The current injection mold has some problems in manufacturing plastic products.
For example, the cooling time of the hot melted plastic in the cavity is long, which causes the problem that the production time of the plastic finished product is prolonged, and the demoulding is mostly realized by using one hydraulic cylinder again during demoulding, which causes economic waste, and the cooling effect is not ideal due to the cooling by water cooling or air cooling during cooling. Accordingly, the present invention is directed to a plastic injection mold that facilitates cooling and demolding, and solves the above-mentioned problems of the prior art.
Disclosure of Invention
The invention aims to provide a plastic injection mold convenient for cooling and demolding, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a plastic injection mold convenient for cooling and demolding comprises an injection molding device and a cooling device, wherein the injection molding device comprises a box body, a lower mold is arranged in the box body, an upper mold is arranged above the upper mold, the upper side of the upper mold is connected with an electric telescopic rod, the upper end of the electric telescopic rod is installed at the top of the box body, the middle part of the upper mold is provided with an injection molding head, the injection molding head is connected with an injection molding runner, the upper end of the injection molding runner penetrates through the box body and is connected with an injection molding mechanism, the lower end of the injection molding;
a heat dissipation flow channel is arranged in the lower die, the left end and the right end of the heat dissipation flow channel penetrate through the lower die, the right side of the heat dissipation flow channel is communicated with a sealing cavity, the upper side of the sealing cavity is connected with the lower die and a box body through an upper plate to form a closed space, a water inlet pipe is arranged on the left side of the box body, a water outlet pipe is connected to the lower right side of the sealing cavity, a water pump is installed at the left end of the water outlet pipe, a solenoid valve is arranged on;
the cooling device is equipped with a plurality of outstanding pipelines including accepting the groove, accepts the inslot, and the pipeline intussuseption is filled with porous filler, and the left end of accepting the groove passes through the pipe connection water distribution board, installs the solenoid valve on the pipeline, and the water distribution board is located directly over the mould, the top of accepting the groove is equipped with the packing layer, and the top of packing layer is equipped with the spray tube, and the top of spray tube is equipped with the water collector, and the spray tube passes through the pipe connection outlet pipe, the left side of box is equipped with cooling fan, and the right side of box is equipped with the air outlet, and the air outlet communicates cooling device's middle part.
As a further scheme of the invention, the demolding device comprises a connecting rod fixed with the upper mold and a hinged rod hinged with the lower film, the lower end of the connecting rod is connected in a sliding groove in the hinged rod in a sliding manner, and one end, facing the cavity, of the hinged rod is hinged with the demolding rod.
As a further aspect of the present invention, the mold release rod is slidably connected in the guide groove, a sealing piece is fixed at the upper end of the mold release rod, a sealing pad is arranged at the lower side of the sealing piece for sealing the guide groove, the mold release rod comprises an upper sliding rod and a lower transmission rod, and the upper end and the lower end of the transmission rod are hinged, so that the mold release rod can vertically move up and down.
As a further scheme of the invention, the lower side of the hinged rod is connected with the lower die through a spring I, and the spring I is positioned at one end far away from the hinged part, so that the moving distance of the connecting rod can be enlarged by the demoulding rod to adapt to cavities with different depths, and the demoulding is ensured to be smooth.
As a further scheme of the invention, the heat dissipation runner is provided with a plurality of heat conducting fins at positions corresponding to the cavity, and the heat conducting fins are vertically provided with a plurality of blocks in parallel to lead out heat above.
As a further scheme of the present invention, the lower side of the heat dissipation channel is a downward curved arc shape, so that the volume in the channel is increased and then decreased, thereby increasing the disturbance of the fluid and improving the heat exchange at the upper part.
As a further scheme of the present invention, a vertically upward flow guide opening is provided on the right side of the heat dissipation flow channel, the inner side of the flow guide opening is a rectangular through hole, and the upper side of the flow guide opening is parallel to the horizontal plane, so that the suction force to each heat dissipation flow channel is the same when water is absorbed.
As a further scheme of the invention, the water distribution plate is in a groove shape, the bottom of the groove is provided with a spongy cushion, the lower side of the groove is provided with a plurality of through holes, and the water flow is dispersed and then slowly falls down to cool the outer side of the upper die.
As a further scheme of the invention, an upper plate II is fixed on the left side of the lower die, the upper plate I inclines towards the upper right, transverse flow channels are arranged at the positions, deviating from the cavity, of the front side and the rear side in the upper die, and a gap is reserved between the left side of the upper plate II and the box body.
As a further scheme of the invention, the outer sides of the upper die and the lower die are both provided with water absorbing layers, and the upper side of the upper die is conical, so that water flow accumulation is avoided.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the injection molding device is sealed by the box body, the air cooling and the water cooling are combined, the outer side and the inner side of the injection molding device are simultaneously cooled, the cooling speed is accelerated, the heat is taken away by utilizing the evaporation of water, the cooling effect is obvious, and meanwhile, the hot water is cooled by the arrangement of the cooling device, so that the hot water is recycled, and the water resource is saved.
Drawings
FIG. 1 is a schematic structural diagram of a plastic injection mold facilitating cooling demolding.
Fig. 2 is a partially enlarged structural diagram of a in fig. 1.
Fig. 3 is a schematic top view of a heat dissipation channel of a plastic injection mold for facilitating cooling and demolding.
FIG. 4 is a schematic top view of an injection molding apparatus in a plastic injection mold for facilitating cooling and demolding.
FIG. 5 is a schematic diagram of a top view of a water distribution plate in a plastic injection mold for facilitating cooling and demolding.
FIG. 6 is a schematic perspective view of a receiving groove of a plastic injection mold for facilitating cooling and demolding.
In the figure: 1. an injection molding device; 2. a cooling device; 3. a box body; 4. a lower die; 5. an upper die; 6. an injection head; 7. injection molding a runner; 8. an electric telescopic rod; 9. a heat dissipation flow channel; 10. sealing the cavity; 11. a flow guide port; 12. a first upper plate; 13. a second upper plate; 14. a demolding device; 15. a heat conductive sheet; 16. a water inlet pipe; 17. a cooling fan; 18. a transverse flow passage; 19. a stripper bar; 20. a connecting rod; 21. a hinged lever; 22. a first spring; 23. a guide groove; 24. a discharge door; 25. an air outlet; 26. a receiving groove; 27. a water distribution plate; 28. a filler layer; 29. a nozzle; 30. a water collector; 31. and (5) discharging a water pipe.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, in the embodiment of the present invention, a plastic injection mold convenient for cooling and demolding comprises an injection device 1 and a cooling device 2, the injection device 1 includes a box 3, a lower mold 4 is disposed in the box 3, an upper mold 5 is disposed above the upper mold 4, an upper side of the upper mold 5 is connected to an electric telescopic rod 8, an upper end of the electric telescopic rod 8 is mounted at a top of the box 3, an injection head 6 is disposed at a middle portion of the upper mold 4, the injection head 6 is connected to an injection runner 7, an upper end of the injection runner 7 penetrates through the box 3 and is connected to an injection mechanism, a lower end of the injection head 6 is communicated with a cavity, a plurality of demolding devices 14 are disposed at a lower side of the cavity, each demolding device 14 includes a connecting rod 20 fixed to the upper mold 5, a hinged rod 21 hinged to the lower mold 5, a lower end of the connecting rod 20, the demolding rod 19 is connected in the guide groove 23 in a sliding mode, the sealing piece is fixed at the upper end of the demolding rod 19, the sealing pad is arranged on the lower side of the sealing piece and used for sealing the guide groove 23, the demolding rod 19 comprises an upper sliding rod and a lower transmission rod, the upper end and the lower end of the transmission rod are hinged, the demolding rod 19 can vertically move up and down, the lower side of the hinge rod 21 is connected with the lower mold 4 through a first spring 22, and the first spring 22 is located at one end far away from the hinge, so that the demolding rod 19 can enlarge the moving distance of the connection rod 20 to adapt to cavities with different depths;
a heat dissipation runner 9 is arranged in the lower die 4, the left end and the right end of the heat dissipation runner 9 both penetrate through the lower die 5, a plurality of heat conducting fins 15 are arranged at positions of the heat dissipation runner 9 corresponding to the die cavity, the heat conducting fins 15 are vertically arranged in parallel and are used for guiding out heat above, the lower side of the heat dissipation runner 9 is in a downward-bent arc shape, so that the volume in the runner is firstly increased and then reduced, the disturbance of fluid is increased, and the heat exchange at the upper part is improved, the right side of the heat dissipation runner 9 is communicated with a sealing cavity 10, the upper side of the sealing cavity 10 is connected with the lower die 5 and the box body 3 through a first upper plate 12 to form a closed space, a vertically upward flow guide opening 11 is arranged at the right side of the heat dissipation runner 9, the inner side of the flow guide opening 11 is a rectangular through hole, the upper side of the flow guide opening 11 is, the upper plate I12 inclines towards the upper right, transverse flow channels 18 are arranged at the positions, deviating from the cavity, of the front side and the rear side in the upper die 5, a gap is reserved between the left side of the upper plate II 13 and the box body 3, a water inlet pipe 16 is arranged at the left side of the box body 3, a water outlet pipe 31 is connected to the lower right side of the sealing cavity 10, a water pump is installed at the left end of the water outlet pipe 31, an electromagnetic valve is arranged on the water inlet pipe 16, and the water inlet pipe 16;
the cooling device 2 comprises a receiving groove 26, a plurality of protruding pipelines are arranged in the receiving groove 26, porous fillers are filled in the pipelines, the left end of the receiving groove 26 is connected with a water distribution plate 27 through a pipeline, an electromagnetic valve is installed on the pipeline, the water distribution plate 27 is located right above the upper die 5, the water distribution plate 27 is in a groove shape, a spongy cushion is arranged at the bottom of the groove, a plurality of through holes are formed in the lower side of the water distribution plate, water flow is dispersed and then slowly falls down to cool the outer side of the upper die 4, a packing layer 28 is arranged above the receiving groove 26, a spray pipe 29 is arranged above the packing layer 28, a water collector 30 is arranged above the spray pipe 29, the spray pipe 29 is connected with a water outlet pipe 31 through a pipeline, a cooling fan 17 is arranged on the left side of the box 3, an air outlet 25 is arranged on the right side of the box 3, the air, avoid rivers to pile up, the front side of injection moulding device 1 is equipped with discharge door 24 for get the material.
The working principle of the invention is as follows: when the device is used, after the upper die 5 and the lower die 4 are closed through the electric telescopic rod 8, the liquid plastic enters the cavity through the injection runner 7, the valve of the water inlet pipe 16 is opened, water flows to the lower part of the upper plate II 13 under the action of gravity, submerges the lower side of the lower die 4, then enters the flow guide port 11 through the heat dissipation runner 9, the water pump is opened, water is conveyed to the spray pipe 29, the flow of liquid in the heat dissipation runner 9 is accelerated by utilizing negative pressure, the water is sprayed onto the packing layer 28 through the spray pipe 29 and uniformly falls onto the bearing groove 26, the water enters the water distribution plate 27 through the valve opened on the pipeline, water drops fall onto the upper die 5 for heat exchange, meanwhile, the cooling fan 17 supplies air, hot air is evaporated by wind power, hot air enters the cooling device 2 from the air outlet 25, redundant water cools the upper die 5 through the transverse runner 18, and the water flow enters the left side of the, the hot air rises through the through holes of the pipes of the receiving groove 26, passes through the packing layer 28 and the spray pipe 29 in sequence, the water collector 30 reduces the emission of water by the evaporative cooling water of the water, and the cooled water enters the cooling device 2 again to complete circulation.
After the cooling finishes, the valve on inlet tube 16 and the water distribution board 27 is all closed, the water pump further draws water, make the water level in the injection moulding device 1 reduce to under the heat dissipation runner 9, cooling fan 17 air-dries the apparent water, carry out final cooling, afterwards, electric telescopic handle 8 lifts, demoulding device 14 carries out the drawing of patterns in step, and take out from discharge door 24, during the drawing of patterns, connecting rod 20 rises, drive hinge bar 21 and rotate, and then drive 19 top moulds of stripper bar, guarantee that the mould jacking targets in place, conveniently get the material.
According to the invention, the injection molding device 1 is sealed by the box body 3, and the air cooling and the water cooling are combined, so that the outer side and the inner side of the injection molding device 1 are simultaneously cooled, the cooling speed is accelerated, the heat is taken away by utilizing the evaporation of water, the cooling effect is obvious, and meanwhile, the hot water is cooled by the arrangement of the cooling device 2, so that the hot water is recycled, and the water resource is 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 (10)
1. The plastic injection mold convenient for cooling and demolding comprises an injection molding device (1) and a cooling device (2), and is characterized in that the injection molding device (1) comprises a box body (3), a lower mold (4) is arranged in the box body (3), an upper mold (5) is arranged above the upper mold (4), an electric telescopic rod (8) is connected to the upper side of the upper mold (5), the upper end of the electric telescopic rod (8) is installed at the top of the box body (3), an injection molding head (6) is arranged in the middle of the upper mold (4), the injection molding head (6) is connected with an injection molding runner (7), the upper end of the injection molding runner (7) penetrates through the box body (3) and is connected with an injection molding mechanism, the lower end of the injection molding head (6) is communicated with;
a heat dissipation flow channel (9) is arranged in the lower die (4), the left end and the right end of the heat dissipation flow channel (9) penetrate through the lower die (5), the right side of the heat dissipation flow channel (9) is communicated with a sealing cavity (10), the upper side of the sealing cavity (10) is connected with the lower die (5) and the box body (3) through an upper plate I (12) to form a closed space, a water inlet pipe (16) is arranged on the left side of the box body (3), a water outlet pipe (31) is connected to the right lower side of the sealing cavity (10), a water pump is installed at the left end of the water outlet pipe (31), an electromagnetic valve is arranged on the water inlet pipe (16);
cooling device (2) is equipped with a plurality of outstanding pipelines including accepting groove (26) in accepting groove (26), and the pipeline intussuseption is filled with porous filler, and the left end of accepting groove (26) passes through pipe connection water distribution plate (27), installs the solenoid valve on the pipeline, and water distribution plate (27) are located mould (5) directly over, the top of accepting groove (26) is equipped with packing layer (28), and the top of packing layer (28) is equipped with spray tube (29), and the top of spray tube (29) is equipped with water collector (30), and spray tube (29) are through pipe connection outlet pipe (31), the left side of box (3) is equipped with cooling fan (17), and the right side of box (3) is equipped with air outlet (25), and air outlet (25) communicate the middle part of cooling device (2), the front side of device of moulding plastics (1) is equipped with discharge door (24.
2. A plastic injection mould facilitating cooling demoulding according to claim 1, wherein the demoulding device (14) comprises a connecting rod (20) fixed to the upper mould (5), a hinge rod (21) hinged to the lower membrane (5), the lower end of the connecting rod (20) being slidably connected in a slide groove in the hinge rod (21), the hinge rod (21) being hinged to a demoulding rod (19) towards the end of the mould cavity.
3. A plastic injection mold facilitating cooling and demolding as claimed in claim 2, wherein the demolding rod (19) is slidably connected in the guide groove (23), a sealing sheet is fixed on the upper end of the demolding rod (19), a sealing gasket is arranged on the lower side of the sealing sheet, the demolding rod (19) comprises an upper sliding rod and a lower transmission rod, and the upper end and the lower end of the transmission rod are hinged.
4. A plastic injection mold facilitating cooling demolding according to claim 2, characterized in that the lower side of the hinge rod (21) is connected to the lower mold (4) by a first spring (22), the first spring (22) being located at the end remote from the hinge.
5. A plastic injection mold facilitating cooling and demolding as claimed in claim 1, wherein the heat dissipation runner (9) is provided with a plurality of heat conduction fins (15) at positions corresponding to the cavity, and the heat conduction fins (15) are vertically provided with a plurality of blocks in parallel.
6. A plastic injection mold facilitating cooling demolding according to claim 1, characterized in that the underside of the heat dissipation flow channel (9) is in the shape of a circular arc bent downwards.
7. The plastic injection mold convenient for cooling and demolding as claimed in claim 1, wherein a vertically upward flow guide opening (11) is formed in the right side of the heat dissipation flow channel (9), the inner side of the flow guide opening (11) is a rectangular through hole, and the upper side of the flow guide opening (11) is parallel to the horizontal plane.
8. The plastic injection mold facilitating cooling and demolding as claimed in claim 1, wherein the water distribution plate (27) is trough-shaped, a sponge pad is arranged at the bottom of the trough, and a plurality of through holes are arranged at the lower side.
9. The plastic injection mold convenient for cooling and demolding as claimed in claim 1, wherein a second upper plate (13) is fixed on the left side of the lower mold (5), the first upper plate (12) inclines towards the upper right, transverse flow channels (18) are arranged on the front side and the rear side of the inner portion of the upper mold (5) and deviate from the cavity, and a gap is reserved between the left side of the second upper plate (13) and the box body (3).
10. A plastic injection mold facilitating cooling and demolding as claimed in claim 1, wherein the outer sides of the upper mold (5) and the lower mold (4) are both provided with water absorbing layers, and the upper side of the upper mold (5) is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011060335.4A CN112318838A (en) | 2020-09-30 | 2020-09-30 | Plastic injection mold convenient to cooling drawing of patterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011060335.4A CN112318838A (en) | 2020-09-30 | 2020-09-30 | Plastic injection mold convenient to cooling drawing of patterns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112318838A true CN112318838A (en) | 2021-02-05 |
Family
ID=74314469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011060335.4A Pending CN112318838A (en) | 2020-09-30 | 2020-09-30 | Plastic injection mold convenient to cooling drawing of patterns |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112318838A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160243739A1 (en) * | 2015-02-20 | 2016-08-25 | Ford Motor Company | Injection-Molding Tool with Integrated Air Jets |
| CN108327182A (en) * | 2018-04-26 | 2018-07-27 | 杨传平 | A kind of injection mold being quickly cooled down demoulding |
| CN108705735A (en) * | 2018-05-17 | 2018-10-26 | 繁昌县众运机械制造有限公司 | A kind of mechanical injection mold with refrigerating function |
| CN210791895U (en) * | 2019-07-09 | 2020-06-19 | 珠海正祥科技有限公司 | Improve cooling effect's injection mold |
-
2020
- 2020-09-30 CN CN202011060335.4A patent/CN112318838A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160243739A1 (en) * | 2015-02-20 | 2016-08-25 | Ford Motor Company | Injection-Molding Tool with Integrated Air Jets |
| CN108327182A (en) * | 2018-04-26 | 2018-07-27 | 杨传平 | A kind of injection mold being quickly cooled down demoulding |
| CN108705735A (en) * | 2018-05-17 | 2018-10-26 | 繁昌县众运机械制造有限公司 | A kind of mechanical injection mold with refrigerating function |
| CN210791895U (en) * | 2019-07-09 | 2020-06-19 | 珠海正祥科技有限公司 | Improve cooling effect's injection mold |
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