CN216832067U - Liquid crystal screen backlight mould - Google Patents
Liquid crystal screen backlight mould Download PDFInfo
- Publication number
- CN216832067U CN216832067U CN202123258253.3U CN202123258253U CN216832067U CN 216832067 U CN216832067 U CN 216832067U CN 202123258253 U CN202123258253 U CN 202123258253U CN 216832067 U CN216832067 U CN 216832067U
- Authority
- CN
- China
- Prior art keywords
- core
- die
- rubber frame
- pulling
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of moulds, in particular to a liquid crystal screen backlight mould which is used for producing a rubber frame of a backlight module; the method comprises the following steps: an upper die; a lower die; the side mold core is arranged in a space formed by closing the upper mold and the lower mold, and the upper mold, the side mold core and the lower mold are enclosed to form an injection molding cavity for molding the rubber frame; the side core-pulling mechanism is fixedly arranged on the side edge of the lower die, and the output end of the side core-pulling mechanism is connected with the side core; after the rubber frame is formed, the upper die moves away from the lower die to realize the separation of the upper die and the rubber frame; the side core-pulling mechanism drives the side core to slide and keep away from the lower die, so that the side core is separated from the rubber frame. Therefore, the rubber frame can be stably separated from the upper die, the side die core and the lower die respectively, the rubber frame is prevented from being damaged in the die opening process, the surface quality of the rubber frame is guaranteed, and the finished product qualification rate of the rubber frame is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the mould, especially, relate to a LCD screen mould in a poor light.
Background
The backlight module is one of the key components of the liquid crystal display panel. The function is to provide sufficient brightness and light source with uniform distribution, so that the image can be displayed normally.
The backlight is a light source that provides the LCD panel. Mainly comprises a light source, a light guide plate, an optical film, a plastic frame and the like. The backlight source has the characteristics of high brightness, long service life, uniform light emission and the like. At present, there are three types of backlight sources, i.e., EL, CCFL and LED, which are classified into edge type and direct type (bottom backlight type) according to the distribution position of the light source. As LCD modules continue to develop in brighter, lighter, and thinner directions, edge-lit CCFL backlights become the mainstream of backlight development.
The side income formula backlight unit includes lamp strip, backplate and sets gradually reflector plate, light guide plate and the blooming material etc. on the backplate, and the lamp strip sets up the income light side at the light guide plate, still including gluing the frame, glues the frame and sets up between the curb plate of the side edge of light guide plate and blooming material and backplate, glues the frame and is used for fixed light guide plate and blooming material.
The existing rubber frame is generally a plastic product and is formed by injection molding through an injection mold, the existing injection mold for producing the rubber frame has some defects in structural design, and the injection mold has a complex structure, is difficult to demold and has low yield.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a liquid crystal display backlight module, it is complicated to aim at solving the injection mold structure among the prior art, leads to the technical problem of product drawing of patterns difficulty.
In order to achieve the above object, an embodiment of the present invention provides a liquid crystal display backlight mold for producing a rubber frame of a backlight module; the method comprises the following steps:
an upper die;
a lower die;
the side mold core is arranged in a space formed by closing the upper mold and the lower mold, and the upper mold, the side mold core and the lower mold are enclosed to form an injection molding cavity for molding the rubber frame;
the side core-pulling mechanism is fixedly arranged on the side edge of the lower die, and the output end of the side core-pulling mechanism is connected with the side core;
after the rubber frame is formed, the upper die moves away from the lower die to realize the separation of the upper die and the rubber frame; the side core-pulling mechanism drives the side core to slide and be far away from the lower die, so that the side core is separated from the rubber frame.
Optionally, the side core-pulling mechanism comprises a core-pulling cylinder and a core-pulling fixing seat; the core-pulling fixing seat is fixedly arranged on the side edge of the lower die, and the side core is connected with the core-pulling fixing seat in a sliding manner; the core-pulling air cylinder is fixedly installed on the core-pulling fixing base, and an output shaft of the core-pulling air cylinder penetrates through the core-pulling fixing base and is pivoted on the side core.
Optionally, the core pulling fixing seat extends outwards along the side edge of the lower die, the core pulling fixing seat is provided with two die core guide rails in parallel along the moving path of the side die core, and the side die core is connected to the two die core guide rails in a sliding manner.
Optionally, the side core comprises:
the molding core seat extends into a space formed by closing the upper die and the lower die so as to realize molding of the rubber frame;
and the connecting tailstock is fixedly connected to the tail part of the molding core seat, and an output shaft of the core-pulling cylinder is pivoted with the connecting tailstock.
Optionally, the front end of the output shaft of the core pulling cylinder is provided with a connecting bolt, the connecting tailstock is provided with a waist-shaped hole, and the output shaft of the core pulling cylinder is connected with the connecting tailstock through the connecting bolt and the waist-shaped hole to realize pin joint.
Optionally, the upper die is provided with a positioning bolt, and the side core is provided with a positioning concave hole; the upper die, the side die core and the lower die are enclosed to form the injection molding cavity, and the upper die is fixed on the side die core in an inserted manner through the positioning bolt and the positioning concave hole.
Optionally, an upper core is arranged on the bottom side of the upper die, and a lower core is arranged on the top side of the lower die; and forming a cavity in the upper mold core and the lower mold core based on the rubber frame structure.
Optionally, two sides of the upper die are provided with upper positioning insertion blocks, and two sides of the lower die are provided with lower positioning insertion blocks; and the upper positioning insertion block and the lower positioning insertion block are mutually wedged to realize the closing of the upper die and the lower die.
Optionally, the liquid crystal display backlight mold further comprises a demolding mechanism; the demolding mechanism comprises a thimble and a top plate; the top plate is movably connected into the lower die, the ejector pin is arranged on the top plate and driven by the top plate, the lower die is provided with a jacking hole corresponding to the ejector pin, the top plate is driven to move up and down through an external power source, and then the ejector pin is driven to move up and down, so that the rubber frame is separated from the lower die.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the LCD screen mould in a poor light have one of following technological effect at least: the embodiment of the utility model provides a liquid crystal display backlight module simple structure, convenient operation go up mould, side core and lower mould behind the compound die the profile closely laminate and enclose mutually and close and form a cavity of moulding plastics that is used for the shaping to glue the frame, and then can carry out the one-time shaping processing of gluing the frame, have reduced manufacturing procedure, and the holistic processingquality of frame is glued in the guarantee, improves whole production machining efficiency. When the mold is opened, the rubber frame is demolded step by step, and the upper mold moves away from the lower mold to realize the separation of the upper mold and the rubber frame; then, the side core is driven by the side core-pulling mechanism to slide and be far away from the lower die, so that the separation of the side core and the rubber frame is realized; and finally, taking down the rubber frame from the lower die. Therefore, the rubber frame can be stably separated from the upper die, the side die core and the lower die respectively, the rubber frame is prevented from being damaged in the die opening process, the surface quality of the rubber frame is guaranteed, and the finished product qualification rate of the rubber frame is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a perspective view of a backlight module of a liquid crystal display provided in an embodiment of the present invention.
Fig. 2 is a sectional view of the backlight module for liquid crystal display provided by the embodiment of the present invention.
Fig. 3 is an exploded view of the backlight module of the liquid crystal display device according to an embodiment of the present invention.
Wherein, in the figures, the various reference numbers:
100. an upper die; 110. Positioning a bolt; 120. An upper mold core; 130. An upper positioning insert block;
200. a lower die; 210. A lower mold core; 220. A lower positioning insert block; 230. Jacking up the hole;
300. a side core; 310. Molding the core seat; 320. Connecting a tailstock; 330. A kidney-shaped hole; 340. Positioning concave holes;
400. a side core-pulling mechanism; 410. A core pulling cylinder; 411. A connecting bolt; 420. A core-pulling fixed seat; 421. A mold core guide rail;
500. a demolding mechanism; 510. A thimble; 520. A top plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In an embodiment of the present invention, as shown in fig. 1 to 3, a liquid crystal display backlight module is provided for producing a rubber frame of a backlight module; the method comprises the following steps:
an upper die 100;
a lower die 200;
the side core 300 is arranged in a space formed by closing the upper die 100 and the lower die 200, and the upper die 100, the side core 300 and the lower die 200 enclose to form an injection molding cavity for molding the rubber frame;
and the side core-pulling mechanism 400, wherein the side core-pulling mechanism 400 is fixedly installed at the side edge of the lower die 200, and the output end of the side core-pulling mechanism 400 is connected with the side core 300.
Specifically, the embodiment of the utility model provides a liquid crystal display backlight module simple structure, convenient operation, go up mould 100 side core 300 with lower mould 200 the profile is closely laminated and is closed mutually and form one and be used for the shaping behind the compound die glue the cavity of moulding plastics of frame, and then can go on glue the one-time forming process of frame, reduced manufacturing procedure, the guarantee glue the holistic processingquality of frame, improve whole production machining efficiency. When the mold is opened, the rubber frame is demolded step by step, the upper mold 100 moves and is far away from the lower mold 200, and the upper mold 100 is separated from the rubber frame; then, the side core-pulling mechanism 400 drives the side core 300 to slide and be away from the lower die 200, so that the separation of the side core 300 and the rubber frame is realized; and finally, the rubber frame is taken down from the lower die 200. Therefore, the rubber frame can be stably separated from the upper die 100, the side mold core 300 and the lower die 200, the rubber frame is prevented from being damaged in the die opening process, the surface quality of the rubber frame is guaranteed, and the finished product yield of the rubber frame is greatly improved.
In another embodiment of the present invention, as shown in fig. 3, the side core pulling mechanism 400 includes a core pulling cylinder 410 and a core pulling fixing seat 420; the core-pulling fixing seat 420 is fixedly installed at a side edge of the lower die 200, and the side core 300 is slidably connected to the core-pulling fixing seat 420; the core pulling cylinder 410 is fixedly installed on the core pulling fixing seat 420, and an output shaft of the core pulling cylinder 410 penetrates through the core pulling fixing seat 420 and is pivoted on the side core 300. Specifically, when the side core pulling mechanism 400 works, the core pulling cylinder 410 acts to drive the side core 300 to slide on the core pulling fixing seat 420 through an output shaft of the core pulling cylinder, so that the side core 300 is inserted into the upper die 100 and the lower die 200 or the side core 300 is separated from the upper die 100 and the lower die 200, the movement process of the side core 300 is stable, the phenomenon of unsmooth movement or over-violent movement is not easy to occur, the service life of the side core 300 is prolonged, and the molding quality of the rubber frame is easy to guarantee.
In another embodiment of the present invention, as shown in fig. 3, the core pulling fixing seat 420 extends outwards along the side of the lower mold 200, two mold core guide rails 421 are arranged in parallel along the moving path of the side mold core 300 on the core pulling fixing seat 420, and the side mold core 300 is slidably connected to the two mold core guide rails 421. Specifically, the two core rails 421 are shaped according to the moving path of the side core 300, so that the side core 300 can be moved along a predetermined path, and smooth demolding can be realized.
In another embodiment of the present invention, as shown in fig. 3, the side core 300 includes:
the molding core holder 310, the molding core holder 310 extends into a space formed by closing the upper die 100 and the lower die 200 to realize the molding of the rubber frame;
and the connecting tail seat 320, the connecting tail seat 320 is fixedly connected to the tail part of the molding core seat 310, and the output shaft of the core-pulling cylinder 410 is pivoted with the connecting tail seat 320.
Specifically, the forming core print 310 and the connecting tail seat 320 are integrally formed, so that the production process is simplified, the assembly of subsequent processes is not required, the industrial production efficiency of the side core 300 is improved, and the consistency and the production efficiency of products are effectively improved. Meanwhile, the integral forming ensures more accurate rigidity, higher strength and better stability of the side core 300, the mechanical and physical properties are better, and the miniaturization of the whole structure of the liquid crystal display backlight mould is facilitated.
In another embodiment of the present invention, as shown in fig. 3, the front end of the output shaft of the core pulling cylinder 410 is provided with a connection bolt 411, the connection tailstock 320 is provided with a waist-shaped hole 330, the output shaft of the core pulling cylinder 410 and the connection tailstock 320 pass through the connection bolt 411 and the waist-shaped hole 330 to realize the pivot joint. Specifically, the output shaft of the core pulling cylinder 410 is connected with the connecting tailstock 320 through a waist-shaped hole, and a connection gap between the output shaft of the core pulling cylinder 410 and the connecting tailstock 320 is small, so that the pulling phenomenon between the output shaft of the core pulling cylinder 410 and the connecting tailstock 320 during linear motion can be avoided, and the side core 300 is high in adjustment accuracy and good in stability.
In another embodiment of the present invention, as shown in fig. 2, the upper mold 100 is provided with a positioning bolt 110, and the side core 300 is provided with a positioning concave hole 340; when the upper mold 100, the side core 300 and the lower mold 200 enclose and close to form the injection molding cavity, the upper mold 100 is fixed to the side core 300 through the positioning pins 110 and the positioning concave holes 340 in an inserting manner. Specifically, when the side core 300 reaches the position, the upper mold 100 and the lower mold 200 are closed, and then the positioning pin 110 is accurately inserted into the positioning concave hole 340, the side core 300 is kept in the middle of the upper mold 100 and the lower mold 200 without shifting under the action of the positioning pin 110, so that the side core 300 is prevented from being demolded due to accidental movement in the injection molding process, and the product quality is ensured.
In another embodiment of the present invention, as shown in fig. 1 to 3, an upper core 120 is disposed on the bottom side of the upper mold 100, and a lower core 210 is disposed on the top side of the lower mold 200; a cavity is formed in the upper core 120 and the lower core 210 based on the plastic frame structure.
In another embodiment of the present invention, as shown in fig. 1 and 3, the upper mold 100 is provided with upper positioning insertion blocks 130 at both sides thereof, and the lower mold 200 is provided with lower positioning insertion blocks 220 at both sides thereof; the upper mold 100 and the lower mold 200 are closed by mutually wedging the upper positioning insert 130 and the lower positioning insert 220. Specifically, through go up location inserted block 130 with lower location inserted block 220 can realize go up mould 100 with the accurate location and the locking of lower mould 200 guarantee glue frame in the uniformity and the yields of injection moulding in-process dimension specification.
In another embodiment of the present invention, as shown in fig. 2, the lcd backlight module further includes a mold releasing mechanism 500; the demolding mechanism 500 comprises a thimble 510 and a top plate 520; the top plate 520 is movably connected to the lower mold 200, the ejector pins 510 are arranged on the top plate 520 and driven by the top plate 520, the lower mold 200 is provided with ejector holes 230 corresponding to the ejector pins 510, the top plate 520 is driven by an external power source to move up and down, and then the ejector pins 510 are driven to move up and down, so that the rubber frame is separated from the lower mold 200. Specifically, the jacking hole 230 is matched with the ejector pin 510, so that the ejector pin 510 can be arranged in the jacking hole 230, and the ejector pin 510 effectively prevents a gap from being generated between the ejector pin 510 and the jacking hole 230 due to the existence of taper, thereby reducing the generation of burrs on the injection molding product caused by the ejector pin 510 and effectively improving the yield of the injection molding product.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A liquid crystal screen backlight mould is used for producing a rubber frame of a backlight module; it is characterized by comprising:
an upper die;
a lower die;
the side mold core is arranged in a space formed by closing the upper mold and the lower mold, and the upper mold, the side mold core and the lower mold are enclosed to form an injection molding cavity for molding the rubber frame;
the side core-pulling mechanism is fixedly arranged on the side edge of the lower die, and the output end of the side core-pulling mechanism is connected with the side core;
after the rubber frame is formed, the upper die moves away from the lower die to realize the separation of the upper die and the rubber frame; the side core-pulling mechanism drives the side core to slide and be far away from the lower die, so that the side core is separated from the rubber frame.
2. The liquid crystal screen backlight mould according to claim 1, characterized in that: the side core-pulling mechanism comprises a core-pulling cylinder and a core-pulling fixed seat; the core-pulling fixing seat is fixedly arranged on the side edge of the lower die, and the side core is connected with the core-pulling fixing seat in a sliding manner; the core-pulling air cylinder is fixedly installed on the core-pulling fixing base, and an output shaft of the core-pulling air cylinder penetrates through the core-pulling fixing base and is pivoted on the side core.
3. The liquid crystal screen backlight mould according to claim 2, characterized in that: the core pulling fixing seat extends outwards along the side edge of the lower die, the core pulling fixing seat is provided with two die core guide rails in parallel along the moving path of the side die core, and the side die core is connected with the two die core guide rails in a sliding mode.
4. The liquid crystal screen backlight mould according to claim 2, characterized in that: the side core includes:
the molding core seat extends into a space formed by closing the upper die and the lower die so as to realize molding of the rubber frame;
and the connecting tailstock is fixedly connected to the tail part of the molding core seat, and an output shaft of the core-pulling cylinder is pivoted with the connecting tailstock.
5. The liquid crystal display backlight module according to claim 4, wherein: the front end of the output shaft of the core pulling cylinder is provided with a connecting bolt, the connecting tailstock is provided with a waist-shaped hole, and the output shaft of the core pulling cylinder is in pin joint with the connecting tailstock through the connecting bolt and the waist-shaped hole.
6. The backlight module of any one of claims 1-5, wherein: the upper die is provided with a positioning bolt, and the side core is provided with a positioning concave hole; when the upper die, the side die core and the lower die are enclosed to form the injection molding cavity, the upper die is fixed on the side die core in an inserted manner through the positioning bolts and the positioning concave holes.
7. The liquid crystal screen backlight module according to any of claims 1-5, wherein: an upper mold core is arranged on the bottom side of the upper mold, and a lower mold core is arranged on the top side of the lower mold; and forming a cavity in the upper mold core and the lower mold core based on the rubber frame structure.
8. The backlight module of any one of claims 1-5, wherein: the two sides of the upper die are provided with upper positioning insertion blocks, and the two sides of the lower die are provided with lower positioning insertion blocks; and the upper positioning insertion block and the lower positioning insertion block are mutually wedged to realize the closing of the upper die and the lower die.
9. The backlight module of any one of claims 1-5, wherein: the liquid crystal display backlight mould also comprises a demoulding mechanism; the demolding mechanism comprises a thimble and a top plate; the top plate is movably connected in the lower die, the ejector pin is arranged on the top plate and driven by the top plate, the lower die is provided with a jacking hole corresponding to the ejector pin, the top plate is driven by an external power source to move up and down, and then the ejector pin is driven to move up and down, so that the rubber frame is separated from the lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123258253.3U CN216832067U (en) | 2021-12-22 | 2021-12-22 | Liquid crystal screen backlight mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123258253.3U CN216832067U (en) | 2021-12-22 | 2021-12-22 | Liquid crystal screen backlight mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216832067U true CN216832067U (en) | 2022-06-28 |
Family
ID=82110187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123258253.3U Active CN216832067U (en) | 2021-12-22 | 2021-12-22 | Liquid crystal screen backlight mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216832067U (en) |
-
2021
- 2021-12-22 CN CN202123258253.3U patent/CN216832067U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114043675B (en) | Mould and horizontal injection molding machine | |
| JP2020514121A (en) | Die having cutting push pin and method of manufacturing product using the same | |
| CN216832067U (en) | Liquid crystal screen backlight mould | |
| CN214294210U (en) | Injection-blow mould without base plate | |
| CN100411845C (en) | Method for manufacturing light board | |
| CN101554761A (en) | Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system | |
| CN208410574U (en) | A kind of injection mold of camera lens mounting base | |
| CN219405200U (en) | Injection mold of cell-phone leaded light post | |
| CN213166590U (en) | Shadowless lamp support injection mold | |
| CN218139619U (en) | LCD screen casing injection mold | |
| CN211843019U (en) | High-transmittance double-color display support injection mold | |
| CN214239340U (en) | Glasses support class injection mold slider postpones structure of loosing core | |
| CN217916503U (en) | Auto-parts injection mold | |
| CN209955200U (en) | Forming die of liquid level sensor appearance component | |
| CN212979085U (en) | Glasses leg injection mold | |
| CN215791380U (en) | Electric motor car storage battery injection mold | |
| CN220808319U (en) | Injection mold for relay base | |
| CN217968143U (en) | Lamp shell injection mold facilitating demolding | |
| CN214111343U (en) | Emergency light body injection moulding mould | |
| CN219427320U (en) | Injection mold of automobile taillight base | |
| CN217073176U (en) | A mould for accurate injection molding | |
| CN217553043U (en) | Spectacle-frame injection mold of integral type lens | |
| CN210308832U (en) | Die set | |
| CN217514451U (en) | Automatic core-pulling type mould structure for molding porous plastic part | |
| CN212707794U (en) | High-precision liquid crystal display plastic shell mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |