CN212979055U - Injection mold with mold opening ejection function - Google Patents
Injection mold with mold opening ejection function Download PDFInfo
- Publication number
- CN212979055U CN212979055U CN202021186114.7U CN202021186114U CN212979055U CN 212979055 U CN212979055 U CN 212979055U CN 202021186114 U CN202021186114 U CN 202021186114U CN 212979055 U CN212979055 U CN 212979055U
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- Prior art keywords
- plate
- ejector
- mold
- injection
- injection molding
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- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 238000001746 injection moulding Methods 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000000465 moulding Methods 0.000 claims description 5
- 230000000452 restraining effect Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 7
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides an injection mold with mold opening ejection, which comprises an upper liner plate, an upper template, a lower mold seat and a lower liner plate which are arranged in sequence, wherein an injection main runner is arranged in the upper template and the upper liner plate, and a convex module and an upper limiting column are fixed at the bottom of the upper template; the lower template is provided with cavity die cavities, injection molding sub-runners are connected among the cavity die cavities, the bottoms of the injection molding sub-runners are connected with first ejection holes, and the lower template is provided with limiting holes; a first ejector pin is connected in the first ejector hole in a sliding manner, an ejector plate is fixed at the bottom of the first ejector pin, a spring is connected between the ejector plate and the lower backing plate, and a lower limiting column is fixed on the ejector plate; the thickness of lower bolster and die holder with be D, the ejector plate thickness is D, and the original length of spring is L, and the length of lower limit post is H, and D equals H + D + L. The utility model discloses after the cooling shaping, the thimble can realize ejecting action in the die sinking, and need not extra ejecting power structure supplementary.
Description
Technical Field
The utility model relates to an injection mold specifically discloses an ejecting injection mold of die sinking.
Background
The mould is used for obtaining various moulds and tools of required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. Injection molding is a production technique for making thermoplastic or thermosetting plastics into plastic products of various shapes by using a plastic molding die, which is also called an injection mold.
After the injection mold is closed, molten plastic is injected into the cavity by the injection molding machine through the runner, an injection molding part is formed in the cavity after cooling, and after the mold is opened, the injection molding part needs to be ejected out of the cavity through the ejector pins due to certain friction force between the injection molding part and the inside of the cavity. In the prior art, after the mold is opened, the ejector pin is driven to ascend through an external power structure to eject out an injection molding piece in the cavity, the ejection efficiency is low, the ejection is completed by the assistance of other additional power structures, and the device cost is high.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an injection mold for mold opening and ejection, which can realize reliable ejection of an injection molding while opening the mold, and has high ejection efficiency and low device cost.
In order to solve the prior art problem, the utility model discloses an injection mold with mold opening ejection, which comprises an upper liner plate, an upper template, a lower die holder and a lower liner plate which are arranged in sequence, wherein a stripping movable cavity is arranged in the lower die holder, an injection molding main runner is arranged in the upper template and the upper liner plate, m convex modules and n upper limiting columns are fixed at the bottom of the upper template, and m and n are integers more than 1;
the lower template is provided with m concave mold cavities positioned right below the convex mold block, an injection molding sub-runner is connected between the concave mold cavities and positioned right below the injection molding main runner, the bottom of the injection molding sub-runner is connected with a first ejection hole, n limiting holes are arranged in the lower template, and the upper limiting column is connected in the limiting holes in a sliding manner;
a first ejector pin is connected in the first ejector hole in a sliding manner, an ejector plate is fixed at the bottom of the first ejector pin and is connected in the stripping movable cavity in a sliding manner, at least two springs are connected between the ejector plate and the lower backing plate, m lower limiting columns are fixed on the ejector plate and are connected in the limiting holes in a sliding manner;
the thickness of lower bolster and die holder with be D, the ejector plate thickness is D, and the original length of spring is L, and the length of lower limit post is H, and D equals H + D + L.
Furthermore, an upper cooling runner is arranged in the upper template, and a lower cooling runner is arranged in the lower template.
Further, the bottom surface of the upper limiting column is covered with a first buffer layer.
Further, the bottom surface of lower bolster covers there is the second buffer layer.
Furthermore, one side of the female die cavity, which is far away from the injection molding runner, is connected with an ejector block forming groove, the bottom of the ejector block forming groove is connected with a second ejection hole, a second ejector pin is slidably connected in the second ejection hole, and the bottom end of the second ejector pin is fixedly connected with the ejector plate.
Furthermore, a guide groove is formed in the lower base plate, a guide pillar is fixed at the bottom of the ejector plate, and the guide pillar is connected in the guide groove in a sliding mode.
The utility model has the advantages that: the utility model discloses an ejecting injection mold of die sinking, be provided with special ejecting structure, the position relation between cope match-plate pattern and the lower bolster can the indirect control position of thimble, during the compound die, the thimble is restricted in the thimble hole, the melting plastic flows and steps down when moulding plastics, after the cooling shaping, the thimble can realize the action that rises in the die sinking, thereby realize reliable ejecting action to the injection molding, need not extra time, it is ejecting efficient, and need not extra ejecting power structure and assist, the device is with low costs, furthermore, the top surface of lower spacing post flushes with the top surface of lower bolster, step down for getting the material.
Drawings
Fig. 1 is a schematic structural view of the mold closing and injection molding device of the present invention.
Fig. 2 is a schematic structural view of the die sinking and discharging of the utility model.
The reference signs are: the injection molding device comprises an upper base plate 10, an upper die plate 11, an upper cooling runner 111, an injection molding main runner 12, a male die block 13, an upper limiting column 14, a first buffer layer 141, a lower base plate 20, a guide groove 201, a lower die holder 21, a stripping movable cavity 211, a lower die plate 22, a lower cooling runner 221, a second buffer layer 222, a female die cavity 23, an injection molding sub-runner 24, a first ejection hole 241, a limiting hole 25, an ejection block molding groove 26, a second ejection hole 261, a first ejector pin 30, an ejector plate 31, a spring 32, a lower limiting column 33, a second ejector pin 34 and a guide column 35.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 and 2.
The embodiment of the utility model discloses an injection mold for mold opening ejection, which comprises an upper padding plate 10, an upper mold plate 11, a lower mold plate 22, a lower mold seat 21 and a lower padding plate 20 which are sequentially arranged from top to bottom, wherein a stripping movable cavity 211 penetrating through the upper mold plate and the lower mold plate is arranged in the lower mold seat 21, an injection molding main runner 12 is arranged in the upper mold plate 11 and the upper padding plate 10, m convex modules 13 and n upper limiting columns 14 are fixed at the bottom of the upper mold plate 11, and m and n are integers more than 1;
the lower template 22 is provided with m concave mold cavities 23 which are respectively positioned under the convex mold blocks 13, an injection molding sub-runner 24 positioned on the lower template 22 is connected between the concave mold cavities 23, the injection molding sub-runner 24 is positioned under the injection molding main runner 12, the bottom of the injection molding sub-runner 24 is connected with a first ejection hole 241, n limiting holes 25 are arranged in the lower template 22, and the upper limiting column 14 can be connected in the limiting holes 25 in a sliding manner;
a first ejector pin 30 is connected in each first ejection hole 241 in a sliding manner, the first ejector pins 30 directly act on connecting ribs formed in the injection molding sub-runner 24, defects formed on the surface of a molded part in the cavity 23 can be effectively avoided, the bottom of each first ejector pin 30 is fixed with a same ejector plate 31, the ejector plates 31 are connected in the stripping movable cavity 211 in a sliding manner, at least two springs 32 are connected between the ejector plates 31 and the lower backing plate 20, the springs 32 are located in the stripping movable cavity 211, m lower limiting columns 33 are fixed on the ejector plates 31, the stability of the lifting action of the ejector plates 31 can be effectively improved, the lower limiting columns 33 are respectively located under the upper limiting columns 14, and the lower limiting columns 33 are respectively connected in the limiting holes 25 in a sliding manner;
the thickness of lower bolster 22 and die holder 21 sum for D, and the thickness of ejector plate 31 is D, and the original length of spring 32 is L, and the length of lower spacing post 33 is H, and D equals H + D + L, does not receive the condition of other device efforts promptly, and during the die sinking, spring 32 is in the state of relaxing, and the top surface of lower spacing post 33 flushes with the top surface of lower bolster 22, can make things convenient for the material operation of getting after the whole piece injection molding is ejecting.
The utility model discloses during operation, carry out the compound die earlier, cope match-plate pattern 11 hugs closely on lower bolster 22, lower spacing post 33 inserts spacing post, and push down lower spacing post 33, ejector plate 31 is descended steadily by the balancing power, spring 32 is compressed, first thimble 30 indents first ejector pin 241, form the injection molding die cavity between convex mould piece 13 and the die cavity 23, the molten plastic gets into each injection molding die cavity from injection molding sprue 12 through injection molding subchannel 24, form the injection moulding product in the injection molding die cavity after the cooling forming, form the splice bar in the injection molding subchannel 24; and then the mold is opened, the upper mold plate 11 is separated from the lower mold plate 22 and ascends, the upper limit column 14 ascends to leave the limit hole 25 and loosen the limit on the lower limit column 33, the ejector plate 31 ascends under the action of the elastic restoring force of the spring 32, the first ejector pin 30 ascends along with the first ejector pin, the first ejector pin 30 ejects the connecting rib in the injection molding sub-runner 24, the injection molding product connected with each end of the connecting rib ascends along with the first ejector pin to realize ejection and stripping, the whole injection molding piece is taken out conveniently, and the lower limit column 33 just presses in the limit hole 25 by hand and cannot block taking.
In this embodiment, the upper mold plate 11 is provided with an upper cooling flow passage 111 passing through the male mold piece 13, the lower mold plate 22 is provided with a lower cooling flow passage 221 located below the female mold cavity 23, and in the cooling molding process, cooling water is respectively injected into the upper cooling flow passage 111 and the lower cooling flow passage 221, so that the cooling forming rate can be effectively increased.
In this embodiment, the bottom surface of the upper limiting column 14 is covered with a first buffer layer 141, preferably, the first buffer layer 141 is a rubber layer, which can effectively improve the stability of the upper limiting column 14 driving the lower limiting column 33 to move, and avoid the upper limiting column 14 and the lower limiting column 33 from being damaged due to collision, and meanwhile, the first buffer layer 141 is provided with the upper limiting column 14 instead of the lower limiting column 33, which can effectively avoid the lower limiting column 33 from obstructing the material taking due to the large friction force of the top surface.
In this embodiment, the bottom surface of the lower template 22 is covered with the second buffer layer 222, the limiting hole 25 and the first ejecting hole 241 both penetrate through the second buffer layer 222, the ejector plate 31 can be effectively buffered through the second buffer layer 222, collision damage between the ejector plate 31 and the lower template 22 is avoided, and meanwhile, the stability of the lifting action of the ejector plate 31 can be improved.
In this embodiment, one side of each cavity 23 away from the injection runner 24 is connected to an ejector block forming groove 26, the ejector block forming groove 26 is located on the lower mold plate 22, an ejection auxiliary block is formed in the ejection forming groove after cooling forming, the bottom of each ejector block forming groove 26 is connected to a second ejection hole 261, a second ejector pin 34 is connected to each second ejection hole 261 in a sliding manner, the bottom end of the second ejector pin 34 is fixedly connected to the ejector plate 31, when the mold is opened, the ejector plate 31 losing the restriction drives the first ejector pin 30 and the second ejector pin 34 to ascend, the first ejector pin 30 acts on the connection bottom, the second ejector pin 34 acts on the bottom of the ejection auxiliary block, it can be ensured that the whole injection molding is stably ejected under the action of balanced force, and damage caused by offset inclination in the process of ejecting the whole injection molding is avoided.
In this embodiment, the guide groove 201 is provided in the lower bolster 20, the guide post 35 is fixed to the bottom of the ejector plate 31, and the guide post 35 is slidably coupled in the guide groove 201, so that the stability of the lifting operation of the ejector plate 31 can be further improved by the guide post 35 and the guide groove 201.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. An injection mold with mold opening ejection comprises an upper base plate (10), an upper mold plate (11), a lower mold plate (22), a lower mold base (21) and a lower base plate (20) which are sequentially arranged, wherein a stripping movable cavity (211) is arranged in the lower mold base (21), and the injection mold is characterized in that an injection molding main runner (12) is arranged in the upper mold plate (11) and the upper base plate (10), m convex modules (13) and n upper limiting columns (14) are fixed at the bottom of the upper mold plate (11), and m and n are integers greater than 1;
the lower die plate (22) is provided with m concave die cavities (23) which are positioned under the convex die block (13), an injection molding sub-runner (24) is connected between the concave die cavities (23), the injection molding sub-runner (24) is positioned under the injection molding main runner (12), the bottom of the injection molding sub-runner (24) is connected with a first ejection hole (241), the lower die plate (22) is provided with n limiting holes (25), and the upper limiting column (14) is connected in the limiting holes (25) in a sliding manner;
a first ejector pin (30) is connected in the first ejector hole (241) in a sliding manner, an ejector plate (31) is fixed at the bottom of the first ejector pin (30), the ejector plate (31) is connected in the stripping movable cavity (211) in a sliding manner, at least two springs (32) are connected between the ejector plate (31) and the lower backing plate (20), m lower limiting columns (33) are fixed on the ejector plate (31), and the lower limiting columns (33) are connected in the limiting holes (25) in a sliding manner;
the thickness sum of the lower template (22) and the lower die holder (21) is D, the thickness of the ejector plate (31) is D, the original length of the spring (32) is L, the length of the lower limiting column (33) is H, and D is H + D + L.
2. An open-mold ejection injection mold according to claim 1, wherein the upper mold plate (11) has an upper cooling runner (111) therein, and the lower mold plate (22) has a lower cooling runner (221) therein.
3. An open-mold, ejector injection mold according to claim 1, wherein the bottom surface of said upper restraining post (14) is covered with a first cushion layer (141).
4. An open-mold, ejector injection mold as in claim 1, wherein the bottom surface of said lower platen (22) is covered with a second cushion layer (222).
5. An open-mold ejection injection mold according to claim 1, wherein one side of the cavity (23) away from the injection runner (24) is connected with an ejector block molding groove (26), the bottom of the ejector block molding groove (26) is connected with a second ejector hole (261), a second ejector pin (34) is slidably connected in the second ejector hole (261), and the bottom end of the second ejector pin (34) is fixedly connected with the ejector plate (31).
6. An open-mold ejection injection mold according to claim 1, wherein the lower backing plate (20) has a guide groove (201), the bottom of the ejector plate (31) is fixed with a guide pillar (35), and the guide pillar (35) is slidably connected in the guide groove (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021186114.7U CN212979055U (en) | 2020-06-23 | 2020-06-23 | Injection mold with mold opening ejection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021186114.7U CN212979055U (en) | 2020-06-23 | 2020-06-23 | Injection mold with mold opening ejection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212979055U true CN212979055U (en) | 2021-04-16 |
Family
ID=75425492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021186114.7U Expired - Fee Related CN212979055U (en) | 2020-06-23 | 2020-06-23 | Injection mold with mold opening ejection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212979055U (en) |
-
2020
- 2020-06-23 CN CN202021186114.7U patent/CN212979055U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210416 |