CN210791854U - Injection mold structure of perforation type light guide plate - Google Patents
Injection mold structure of perforation type light guide plate Download PDFInfo
- Publication number
- CN210791854U CN210791854U CN201921469116.4U CN201921469116U CN210791854U CN 210791854 U CN210791854 U CN 210791854U CN 201921469116 U CN201921469116 U CN 201921469116U CN 210791854 U CN210791854 U CN 210791854U
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- China
- Prior art keywords
- splicing block
- water gap
- product
- guide plate
- light guide
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- 238000002347 injection Methods 0.000 title claims abstract description 13
- 239000007924 injection Substances 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection mold structure of perforation type light guide plate, include: front mould and back mould, the back mould includes: the mouth of a river piece together, set up in the mouth of a river piece together the piece both sides the back mould insert and set up in the inside a plurality of first thimbles of back mould insert, first thimble below is equipped with the spring, first thimble and front mould contact, and the mouth of a river is pieced together and is equipped with ejecting device, and ejecting device includes: the water gap splicing block comprises a water gap needle arranged at the center of the water gap splicing block and a plurality of second ejector pins arranged on the water gap splicing block, wherein the second ejector pins are symmetrically distributed about the center line of the water gap splicing block. The utility model discloses an ejecting device makes the product not receive the influence of slant power at the in-process of drawing of patterns, can the drawing of patterns smoothly, prevents that the product from perforating and appearing pulling, breaking or unedged etc. harmfully. Meanwhile, the first ejector pin synchronously acts along with the product under the action of the spring, so that the product perforation is prevented from being pulled, the smoothness of the inner wall of the perforation is ensured, secondary processing is not needed, and the molding period of the product is shortened.
Description
Technical Field
The utility model relates to an injection moulding's mould technical field especially relates to an injection mold structure of perforation type light guide plate.
Background
With the continuous improvement of the requirements of modern consumers on the functions of the mobile phones, the mobile phones with full screens are produced accordingly. How to arrange the front camera of the mobile phone with the full screen is more beautiful, and the front camera becomes a necessary place for various mobile phone manufacturers. In the current market, the perforated front camera mobile phone becomes a popular trend because the screen occupation ratio of the camera under the screen is greatly increased. The difficulty of mass production of the perforated light guide plate, which is an important part of the backlight module of the mobile phone, is also caused. If the mould is designed according to a general mould structure, after the product finishes the injection moulding action, when the ejection mechanism acts to eject out, because the glue position at the round hole shrinks, the round hole insert pin can be tightly wrapped, and a pulling force can be generated to pull the product. When a general mold structure is ejected, only a nozzle needle is ejected, and if the product is ejected by a nozzle, the product is easy to crack at a round hole due to unbalanced ejection. Even if the product is not cracked, the product can be scratched to generate rough edges and broken filaments, so that the optical effect is influenced.
The existing solution is to manufacture the light guide plate with the blind hole through a die, process and drill the blind hole through CNC, and finally perform polishing treatment. The mode increases the manufacturing cost in the later production period, and the production yield is not high.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough, providing an injection mold structure of perforation type light guide plate, prevent that perforation type light guide plate from pulling, drawing the scheduling problem that splits appearing at ejecting in-process.
The technical scheme of the utility model as follows: an injection mold structure of a perforated-type light guide plate, comprising: front mould and back mould, the back mould includes: the mouth of a river piece, set up in the mouth of a river piece the back mould income of both sides and set up in the inside a plurality of first thimbles of back mould income, first thimble below is equipped with the spring, first thimble and front mould contact, the mouth of a river is pieced together and is equipped with ejecting device, ejecting device includes: the water gap splicing block comprises a water gap needle arranged at the center of the water gap splicing block and a plurality of second ejector pins arranged on the water gap splicing block, wherein the second ejector pins are symmetrically distributed about the central line of the water gap splicing block.
Furthermore, a runner is arranged on the water gap splicing block, and the second ejector pins are arranged on the runner.
Further, the rear mold further includes: the side splicing blocks are arranged on the side faces of the rear mold insert, the tail splicing block is arranged at one end of the rear mold insert, the light source splicing block is arranged at the other end of the rear mold insert, and the sawtooth splicing block is arranged at the joint of the light source splicing block and the rear mold insert.
Further, the rear module is divided into two areas, namely a left area and a right area, and the installation positions of the tiles in the left area and the right area are opposite.
Furthermore, a third thimble is arranged at the position, close to the first thimble, of the tail splicing block.
Adopt above-mentioned scheme, the utility model discloses an ejecting device makes the product not receive the influence of slant power at the in-process of drawing of patterns, can the drawing of patterns smoothly, prevents that the product from perforating and appearing pulling, breaking or unedged etc. harmfully. Meanwhile, the first ejector pin synchronously acts along with the product under the action of the spring, so that the product perforation is prevented from being pulled, the smoothness of the inner wall of the perforation is ensured, secondary processing is not needed, and the molding period of the product is shortened.
Drawings
Fig. 1 is a schematic structural view of the rear mold of the present invention.
Fig. 2 is a schematic structural view of the first thimble.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the present invention provides an injection mold structure for a perforated light guide plate, including: front mould and back mould, the back mould includes: nozzle splits 10, set up in nozzle splits 10 both sides back mould insert 20 and set up in the inside a plurality of first thimble 21 of back mould insert 20, first thimble 21 below is equipped with spring 22, first thimble 21 contacts with the front mould, 10 is equipped with ejecting device on the nozzle splits, ejecting device includes: the nozzle pin 11 is arranged at the center of the nozzle block 10, and the second ejector pins 13 are arranged on the nozzle block 10. The second ejector pins 13 are symmetrically distributed about the center line of the nozzle block 10. The rear die is provided with two cavities, so that two products can be simultaneously injection molded, the injection molding time is saved, and the ejection of the molded products is facilitated. When the mold is closed, the spring 22 is in a compressed state under the action of the front mold. In the injection molding process, the first ejector pin 21 is in close contact with the front mold under the action of the spring 22, and no gap exists between the first ejector pin 21 and the front mold, so that the problem of burrs and burrs generated at the edge of the perforation due to the fact that injection molding materials penetrate into the gap in the injection molding process of products can be solved. When the product is demoulded, the nozzle needle 11 and the second ejector pin 13 eject out the formed product at the same time, because the nozzle needle 11 is located at the central position of the nozzle block 10, and the second ejector pin 13 is symmetrically arranged about the central line of the nozzle block 10, the direction of the force applied to the product by the nozzle needle 11 and the second movable pin 13 is along the axial direction, so that the product can be demoulded smoothly, and meanwhile, the product is protected from being damaged by pulling, cracking and the like due to oblique force. Because the first thimble 21 can be pressed from both sides tightly to product cooling shrink, can drive first thimble 21 synchronous movement certain distance when ejecting, spring 22 also resets gradually because of the separation of front mould this moment to promote first thimble, make between first thimble 21 and the product static relatively, prevent that the product perforation from appearing pulling, breaking etc. and bad, improve the yields of product. The inner wall of the hole on the product formed in the mode is smooth, the process requirement of the perforation type light guide plate is met, secondary processing is not needed, and the forming period is shortened.
A flow passage 12 is arranged on the nozzle block 10, and the second ejector pins 13 are all arranged on the flow passage 12. When the product is demoulded, the second thimble 13 and the water inlet needle 11 act together to provide balanced force for the product, so that the product is separated from the first thimble 21, and the demould of the product is realized.
The rear mold further comprises: the light source module comprises side splicing blocks 30 arranged on the side surfaces of the rear mold insert 20, a tail splicing block 40 arranged at one end of the rear mold insert 20, a light source splicing block 50 arranged at the other end of the rear mold insert 20, and saw-tooth splicing blocks 60 arranged at the joint of the light source splicing block 50 and the rear mold insert 20. The side segments 30 may enable the shaping of the sides of the light guide plate. The end segments 40 can form the side of the light guide plate away from the light source. The light source segments 50 can be formed on the side of the light guide plate near the light source end. The saw-tooth segments 60 are disposed inside the light source segment 50. the saw-tooth segments 60 can realize the shaping of the saw-tooth structure at the low light source end of the light guide plate. During installation, the water gap splicing block 10 is arranged on the rear die, then the light source splicing block 50 and the tail splicing block 40 are installed, the side splicing block 30 and the sawtooth splicing block 60 are sequentially installed, and finally all the splicing blocks are squeezed tightly through the squeezing block, so that gaps among the splicing blocks are prevented, and flash and burrs are avoided. According to the actual demand of product, can change corresponding piece together, make things convenient for in the production preparation of mould and do benefit to the maintenance to the mould after the volume production, very big saving earlier stage cost of manufacture and later stage mould maintenance cost.
The rear die is divided into two areas, namely a left area and a right area, the left area is overlapped with the right area after rotating 180 degrees around the center of the rear die, and the left area and the right area are respectively provided with a die cavity. The left area and the right area are arranged in opposite directions, so that when a product is ejected, the stress directions of the left area and the right area are both axial directions along the water inlet needle 11, the first ejector pin 21 and the second ejector pin 13, smooth demolding of the product is guaranteed, and meanwhile, the product is protected from being damaged by pulling, broken and the like due to oblique force.
A third thimble 41 is arranged at the position of the tail segment 40 close to the first thimble 21. By arranging the third thimble 41, the adverse conditions of pulling, cracking and the like at the perforation position caused by unbalanced stress when the product is separated from the first thimble 21 are prevented, and the product quality is ensured.
To sum up, the utility model discloses an ejecting device makes the product not receive the influence of slant power at the in-process of drawing of patterns, can the drawing of patterns smoothly, prevents that the product from perforating and appearing pulling, breaking or unedged etc. harmfully. Meanwhile, the first ejector pin synchronously acts along with the product under the action of the spring, so that the product perforation is prevented from being pulled, the smoothness of the inner wall of the perforation is ensured, secondary processing is not needed, and the molding period of the product is shortened.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An injection mold structure of a perforation type light guide plate, comprising: front mould and back mould, the back mould includes: the mouth of a river piece, set up in the mouth of a river piece the back mould income of both sides and set up in the inside a plurality of first thimbles of back mould income, first thimble below is equipped with the spring, first thimble and front mould contact, the mouth of a river is pieced together and is equipped with ejecting device, ejecting device includes: the water gap splicing block comprises a water gap needle arranged at the center of the water gap splicing block and a plurality of second ejector pins arranged on the water gap splicing block, wherein the second ejector pins are symmetrically distributed about the central line of the water gap splicing block.
2. The injection mold structure of a perforated light guide plate according to claim 1, wherein the nozzle block has a flow channel, and the second pins are disposed on the flow channel.
3. An injection mold structure of a perforated-type light guide plate according to claim 1, wherein the rear mold further comprises: the side splicing blocks are arranged on the side faces of the rear mold insert, the tail splicing block is arranged at one end of the rear mold insert, the light source splicing block is arranged at the other end of the rear mold insert, and the sawtooth splicing block is arranged at the joint of the light source splicing block and the rear mold insert.
4. An injection mold structure of a perforated-type light guide plate according to claim 3, wherein the rear mold is divided into two regions, a left region and a right region, respectively, and the mounting positions of the respective tiles in the left and right regions are opposite.
5. The structure of an injection mold for a perforated light guide plate according to claim 3, wherein a third pin is disposed on the tail segment adjacent to the first pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469116.4U CN210791854U (en) | 2019-09-04 | 2019-09-04 | Injection mold structure of perforation type light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469116.4U CN210791854U (en) | 2019-09-04 | 2019-09-04 | Injection mold structure of perforation type light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210791854U true CN210791854U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921469116.4U Expired - Fee Related CN210791854U (en) | 2019-09-04 | 2019-09-04 | Injection mold structure of perforation type light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210791854U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112590105A (en) * | 2020-10-21 | 2021-04-02 | 深圳市隆利科技股份有限公司 | Light guide plate, preparation process, mold and backlight module |
| CN112693083A (en) * | 2020-11-30 | 2021-04-23 | 深圳市隆利科技股份有限公司 | Injection compression mold and injection demolding method for perforated light guide plate |
-
2019
- 2019-09-04 CN CN201921469116.4U patent/CN210791854U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112590105A (en) * | 2020-10-21 | 2021-04-02 | 深圳市隆利科技股份有限公司 | Light guide plate, preparation process, mold and backlight module |
| CN112693083A (en) * | 2020-11-30 | 2021-04-23 | 深圳市隆利科技股份有限公司 | Injection compression mold and injection demolding method for perforated light guide plate |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200619 |