CN210100564U - Injection mold - Google Patents
Injection mold Download PDFInfo
- Publication number
- CN210100564U CN210100564U CN201920881813.4U CN201920881813U CN210100564U CN 210100564 U CN210100564 U CN 210100564U CN 201920881813 U CN201920881813 U CN 201920881813U CN 210100564 U CN210100564 U CN 210100564U
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- Prior art keywords
- cooling
- mold core
- water inlet
- water outlet
- opening
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- 238000002347 injection Methods 0.000 title claims abstract description 46
- 239000007924 injection Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 238000001816 cooling Methods 0.000 claims abstract description 95
- 238000007789 sealing Methods 0.000 claims description 15
- 238000001746 injection moulding Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 206010011732 Cyst Diseases 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Abstract
The utility model provides an injection mold, which comprises a front mold core and a rear mold core, the cooling insert comprises a base plate and ejector pins, the base plate is located on the side face, far away from the front mold core, of the rear mold core, the water inlet channel and the water outlet channel are formed in the base plate, the rear mold core comprises a rear mold core and a cooling insert, the rear mold core comprises a cavity end portion and an installation end portion, the cavity end portion and the front mold core can form a cavity and a flow channel, the installation end portion is fixedly installed on the base plate, the rear mold core is provided with an opening end, the opening is located at the installation end portion, the cooling insert is located in the opening, the cooling insert is provided with a through hole and a cooling groove, the through hole penetrates through the cooling insert in the opening and closing mold direction of the injection mold, the cooling groove is located on the outer surface of the cooling insert, the cooling groove is respectively communicated with the water. The cooling effect of the injection mold is good, and the product forming quality, the injection molding production yield and the production efficiency are improved.
Description
Technical Field
The utility model belongs to the technical field of injection moulding production technique and specifically relates to an injection mold is related to.
Background
An injection mould is a tool for producing plastic products, and particularly relates to a formed product which is obtained by injecting heated and melted plastics into a mould cavity from an injection molding machine at high pressure and cooling and solidifying the plastics. The runner structure of the injection mold is a group of feeding channels for guiding plastic melt from a nozzle of an injection molding machine to a cavity, and the arrangement of the runner structure is directly related to the molding quality and the production efficiency of plastic products.
Referring to fig. 1 and 2, the injection molding product 1 is a cylindrical thin-shell electroplated product, the glue inlet is arranged inside, and a thimble 21 is required to be arranged in the middle for ejecting the water gap 11. And the appearance requirement of the injection product 1 is high, and in order to ensure that the injection product 1 has a good forming environment, a built-in water conveying structure is required to be used for adjusting the temperature of the insert steel material.
The existing built-in water carrying structure scheme is that water carrying cooling is carried out on the periphery of the outer part of an injection molding product 1, but the inner part of the product cannot be cooled. In addition, internal water cooling can also be performed using nozzles, as shown in fig. 2 and 3. Although the traditional scheme is simple in structure, certain risk exists, the ejector pin 21 is arranged in the middle of the insert, the insert is circular in shape, small spray pipes 26 and 27 can be cooled only near the ejector pin 21, the spray pipes 26 and 27 are small and easy to block, the cooling range is small and uneven, the external water inlet channels 22 and 23 and the external water outlet channels 24 and 25 are difficult to connect in series, the temperature adjusting effect cannot be achieved on an injection mold with high temperature, and therefore the forming quality and the mass production efficiency of the injection product 1 are affected.
Disclosure of Invention
The utility model aims at providing an injection mold that cooling effect is good, high yields and production efficiency are high.
In order to realize the purpose of the utility model, the utility model provides an injection mould, which comprises a front mould core and a rear mould core, the cooling insert comprises a base plate and ejector pins, the base plate is located on the side face, far away from the front mold core, of the rear mold core, the water inlet channel and the water outlet channel are formed in the base plate, the rear mold core comprises a rear mold core and a cooling insert, the rear mold core comprises a cavity end portion and an installation end portion, the cavity end portion and the front mold core can form a cavity and a flow channel, the installation end portion is fixedly installed on the base plate, the rear mold core is provided with an opening end, the opening is located at the installation end portion, the cooling insert is located in the opening, the cooling insert is provided with a through hole and a cooling groove, the through hole penetrates through the cooling insert in the opening and closing mold direction of the injection mold, the cooling groove is located on the outer surface of the cooling insert, the cooling groove is respectively communicated with the water.
According to the scheme, the cooling insert is additionally arranged in the rear mold core of the injection mold, the cooling groove of the cooling insert is used for circularly cooling the interior of the rear mold core, the rear mold core can obtain an even cooling effect, the deformation of injection molding products is adjusted more conveniently and effectively, and the yield and the production efficiency are improved. Meanwhile, the cooling insert is simple in structure, easy to process and install, safe and reliable to use, uniform in cooling and capable of greatly improving the deformation of injection molding products. The injection mold is particularly suitable for injection molding of cylindrical products, cooling insert encapsulating thimble, adjusting the temperature of steel materials of the rear mold core, improving the deformation of the injection products and the like, and solves the problems that after the thimble is made in the middle of the rear mold core, the cooling insert arranged in the rear mold core is used for water circulation to adjust the temperature of the rear mold core, and the cooling effect is good.
The further scheme is that the rear mold core is further provided with a water inlet hole and a water outlet hole, two ends of the water inlet hole are respectively communicated with the cooling tank and the water inlet channel, and two ends of the water outlet hole are respectively communicated with the cooling tank and the water outlet channel.
The further scheme is that a sealing groove is formed in the end face, close to the end part of the cavity, of the cooling insert, and a sealing rubber ring is placed in the sealing groove. The sealing rubber ring is used for separating each part, so that water leakage is prevented, and normal ejection of the ejector pin is not influenced.
The cooling groove is provided with a connecting section, a water inlet section and a water outlet section, the water inlet section and the water outlet section are respectively arranged on the outer surface of the cooling insert in an extending manner along the mold opening and closing direction, the water inlet section is communicated with the water inlet channel, the water outlet section is communicated with the water outlet channel, and the water inlet section is communicated with the water outlet section through the connecting section.
The end part of the cavity is arranged in a cylindrical shape, the opening is a circular hole, and the opening and the end part of the cavity are coaxially arranged.
In a further embodiment, the through-hole is arranged coaxially with the opening.
In a further proposal, the water inlet channel and the water outlet channel are symmetrically arranged about the central axis of the end part of the cavity.
In a further proposal, the water inlet section and the water outlet section are symmetrically arranged about the central axis of the end part of the cavity.
In a further development, the connecting section is arranged in the form of a ring on the outer surface of the cooling insert.
In a further aspect, the connecting segment is located adjacent to an end of the cooling insert at the end of the mold cavity.
Drawings
FIG. 1 is a structural view of an injection molded product.
Fig. 2 is a partial sectional view of a conventional injection mold.
Fig. 3 is a partial configuration view of a conventional injection mold.
Fig. 4 is a top view of an embodiment of the injection mold of the present invention.
Fig. 5 is a partially exploded view of an embodiment of the injection mold of the present invention.
Fig. 6 is a partial sectional view of the rear mold core in the embodiment of the injection mold of the present invention.
Fig. 7 is a structural diagram of a cooling insert in an embodiment of the injection mold of the present invention.
Fig. 8 is a partial cross-sectional view of a cooling insert in an embodiment of an injection mold of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 4 to 8, the injection mold 3 includes a front mold core 31, a rear mold core 32, a backing plate 33 and an ejector pin 39, the backing plate 33 is located on a side surface of the rear mold core 32 away from the front mold core 31, and the backing plate 33 is provided with a water inlet channel 331 and a water outlet channel 332. The back mold core 32 comprises a back mold core 34 and a cooling insert 35, the back mold core 34 comprises a cavity end 341 and a mounting end 342, the cavity end 341 and the front mold core 31 form a cavity 37 and a flow passage 38, and the mounting end 342 is fixedly mounted on the backing plate 33. Rear mold core 34 defines an opening 345 having an opening 3451 at one end thereof, opening 3451 being located at mounting end 342 and cooling insert 35 being located within opening 345. The cooling insert 35 is provided with a through hole 353 and a cooling groove 352, the through hole 353 penetrates through the cooling insert 35 in the mold opening and closing direction of the injection mold 3, the cooling groove 352 is located on the outer surface of the cooling insert 35, and the cooling groove 352 is respectively communicated with the water inlet passage 331 and the water outlet passage 332. The thimble 39 is located on the side of the runner 38 away from the front mold core 31, and the thimble 39 can penetrate through the through hole 353 and the rear mold core 34 in a movable manner along the mold opening and closing direction of the injection mold 3. The rear mold core 34 is further provided with a water inlet 343 and a water outlet 344, two ends of the water inlet 343 are respectively communicated with the cooling tank 352 and the water inlet channel 331, and two ends of the water outlet 344 are respectively communicated with the cooling tank 352 and the water outlet channel 332. A sealing groove 351 is formed in the end face of the cooling insert 35 close to the end 341 of the cavity of the rear mold core 34, and a sealing rubber ring 36 is placed in the sealing groove 351.
Referring to fig. 5 to 8, the cavity end 341 of the rear mold core 34 of the present embodiment is disposed in a cylindrical shape, the opening 345 of the rear mold core 34 is a circular hole, and the opening 345 is disposed coaxially with the cavity end 341. In this embodiment, the cooling insert 35 is also provided in a cylindrical shape, and the through-hole 353 of the cooling insert 35 is provided coaxially with the opening 345. Meanwhile, the sealing groove 351 on the end surface of the cooling insert 35 close to the cavity end 341 is annular, and correspondingly, the sealing rubber ring 36 placed in the sealing groove 351 is an annular sealing rubber ring. The water inlet passage 331 and the water outlet passage 332 of this embodiment are provided in an L shape, and the water inlet passage 331 and the water outlet passage 332 are provided symmetrically with respect to the center axis of the cavity end portion 341 of the rear mold core 34. In addition, the water inlet holes 343 and the water outlet holes 344 of the rear mold core 34 are also provided in an L shape, and the water inlet holes 343 and the water outlet holes 344 are also provided symmetrically with respect to the center axis of the cavity end 341 of the rear mold core 34.
The cooling groove 352 of the cooling insert 35 has a connecting section 3522, a water inlet section 3521 and a water outlet section 3523, the water inlet section 3521 and the water outlet section 3523 are respectively arranged on the outer surface of the cooling insert 35 in an extending manner along the mold opening and closing direction of the injection mold 3, the water inlet section 3521 is communicated with the water inlet channel 331, the water outlet section 3523 is communicated with the water outlet channel 332, and the water inlet section 3521 is communicated with the water outlet section 3523 through the connecting section 3522. In this embodiment, the water inlet section 3521 is communicated with the water inlet channel 331 through the water inlet hole 343, and the water outlet section 3523 is communicated with the water outlet channel 332 through the water outlet hole 344. Meanwhile, the water inlet section 3521 and the water outlet section 3523 are symmetrically disposed about the central axis of the cavity end 341 of the rear mold core 34, and the connection section 3522 is annularly disposed on the outer surface of the cooling insert 35, the connection section 3522 being adjacent to one end of the cooling insert 35 located at the cavity end 341 of the rear mold core 34.
After the injection mold 3 finishes the injection molding of the cylindrical injection product 1, the water inlet of the water conveying system on the outer side of the mold blank is connected, the cooling water enters the cooling groove 352 of the cooling insert 35 through the water inlet channel 331 of the backing plate 33, and the cooling water is discharged from the water outlet channel 332 of the backing plate 33 after being circulated for one circle in the cooling groove 352 of the cooling insert 35, so that the temperature of the rear mold core 34 is taken away, and the purpose of cooling and circularly adjusting the temperature of the rear mold core 34 is achieved. In the present embodiment, a cooling groove 352 having a large cross section is formed on the outer peripheral surface of the cooling insert 35, and the components are separated by a sealing rubber ring 36, thereby preventing water leakage and preventing the normal ejection of the thimble 39 from being affected. The cooling insert 35 is made as large as possible based on the size of the rear mold core 34, the cooling groove 352 of the cooling insert 35 is easy to machine, the overall structure is easy to install, and the rear mold core 34 is cooled uniformly.
The utility model discloses injection mold 3 is at the inside cooling mold insert 35 that increases of back mould mold core 34, and the cooling bath 352 through cooling mold insert 35 is to the inside circulative cooling that carries out of back mould mold core 34, and back mould mold core 34 can obtain even cooling effect, and is more convenient and effective to the deformation of adjusting injection moulding product 1. The cooling insert 35 has a simple structure, is easy to process and install, is safe and reliable to use, is relatively uniform in cooling, and plays a great role in improving the deformation of the injection molding product 1. And, the utility model discloses injection mold 3 is particularly useful for the injection moulding of cylinder type product, cooling mold insert 35 cyst thimble 39, adjusts back mould mold core 34 steel material temperature, improves occasions such as injection moulding product 1 warp, has solved and has done thimble 39 back in the middle of the back mould mold core 34, and the water circulation is done to the built-in cooling mold insert 35 of back mould mold core 34, is used for adjusting back mould mold core 34 temperature, reaches and improves the injection moulding condition.
Above embodiment is the preferred example of the utility model, and not the restriction the utility model discloses the range of implementing, the event all according to the utility model discloses the equivalent change or the decoration that structure, characteristic and principle were done of application for patent scope all should be included in the utility model discloses the patent application scope.
Claims (10)
1. The utility model provides an injection mold, includes front mould benevolence and back mould benevolence, its characterized in that:
the injection mold further comprises a base plate and an ejector pin, the base plate is positioned on the side surface, far away from the front mold core, of the rear mold core, and the base plate is provided with a water inlet channel and a water outlet channel;
the rear mold core comprises a cavity end part and a mounting end part, the cavity end part and the front mold core can form a cavity and a flow passage, and the mounting end part is fixedly mounted on the base plate;
the rear mold core is provided with an opening with one end opened, the opening is positioned at the mounting end part, and the cooling insert is positioned in the opening;
the cooling insert is provided with a through hole and a cooling groove, the through hole penetrates through the cooling insert in the mold opening and closing direction of the injection mold, the cooling groove is located on the outer surface of the cooling insert, and the cooling groove is respectively communicated with the water inlet channel and the water outlet channel;
the ejector pin is positioned on the side surface of the flow channel, which is far away from the front mold core, and the ejector pin can movably penetrate through the through hole and the rear mold core along the mold opening and closing direction.
2. An injection mold according to claim 1, characterized in that:
the rear mold core is also provided with a water inlet hole and a water outlet hole, two ends of the water inlet hole are respectively communicated with the cooling groove and the water inlet channel, and two ends of the water outlet hole are respectively communicated with the cooling groove and the water outlet channel.
3. An injection mold according to claim 1, characterized in that:
and a sealing groove is formed in the end face, close to the end part of the cavity, of the cooling insert, and a sealing rubber ring is placed in the sealing groove.
4. An injection mould according to any one of claims 1 to 3, characterized in that:
the cooling groove is provided with a connecting section, a water inlet section and a water outlet section, the water inlet section and the water outlet section are respectively arranged on the outer surface of the cooling insert in an extending manner along the direction of the opening and closing die, the water inlet section is communicated with the water inlet channel, the water outlet section is communicated with the water outlet channel, and the water inlet section is communicated with the water outlet section through the connecting section.
5. An injection mold according to claim 4, wherein:
the end part of the cavity is cylindrically arranged, the opening is a round hole, and the opening and the end part of the cavity are coaxially arranged.
6. An injection mold according to claim 5, wherein:
the through hole and the opening are coaxially arranged.
7. An injection mold according to claim 5, wherein:
the water inlet channel and the water outlet channel are symmetrically arranged around the central axis of the end part of the cavity.
8. An injection mold according to claim 5, wherein:
the water inlet section and the water outlet section are symmetrically arranged around the central axis of the end part of the cavity.
9. An injection mould according to any one of claims 5 to 8, characterized in that:
the connecting section is arranged on the outer surface of the cooling insert in a circular ring shape.
10. An injection mold according to claim 9, wherein:
the connecting section is adjacent to one end of the cooling insert at the end of the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920881813.4U CN210100564U (en) | 2019-06-11 | 2019-06-11 | Injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920881813.4U CN210100564U (en) | 2019-06-11 | 2019-06-11 | Injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210100564U true CN210100564U (en) | 2020-02-21 |
Family
ID=69565840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920881813.4U Active CN210100564U (en) | 2019-06-11 | 2019-06-11 | Injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210100564U (en) |
-
2019
- 2019-06-11 CN CN201920881813.4U patent/CN210100564U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An injection mold Effective date of registration: 20231129 Granted publication date: 20200221 Pledgee: Zhuhai Rural Commercial Bank Co.,Ltd. Xiangzhou Branch Pledgor: SUNWAY INDUSTRIAL (ZHUHAI) Co.,Ltd. Registration number: Y2023980068425 |