CN112092311A - Inner periphery circle back-off injection moulding demoulding structure - Google Patents
Inner periphery circle back-off injection moulding demoulding structure Download PDFInfo
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- CN112092311A CN112092311A CN202011011961.4A CN202011011961A CN112092311A CN 112092311 A CN112092311 A CN 112092311A CN 202011011961 A CN202011011961 A CN 202011011961A CN 112092311 A CN112092311 A CN 112092311A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 81
- 238000000465 moulding Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 2
- 238000010586 diagram Methods 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
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
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Abstract
The invention provides an inner circumference ring back-off injection molding demoulding structure, and relates to the technical field of back-off injection molding. The inner periphery ring back-off injection molding demoulding structure comprises a first fixing plate, a lower template, an upper template, a second fixing plate, a front mould core and a rear mould core; the lower template and the front die core are both provided with an inclined guide pillar; the upper die plate is provided with a plurality of outer sliding blocks in a sliding manner, and the outer sliding blocks are connected with the inclined guide posts so that the inclined guide posts can drive the outer sliding blocks to slide on the upper die plate; the rear die core is internally provided with a first inner slide block and a second inner slide block in a sliding manner, the first inner slide block is connected with the inclined guide post so that the inclined guide post can drive the first inner slide block to slide on the rear die core, and the upper die plate is provided with a driving piece for driving the second inner slide block; the first fixed plate is fixedly provided with a tapered wedge shovel machine, the tapered wedge shovel machine is provided with a front mold sliding block, and when the lower template is far away from the first fixed plate, the front mold sliding block is far away from the injection molding piece. The technical effect of good demoulding effect is achieved.
Description
Technical Field
The invention relates to the technical field of inverted buckle injection molding, in particular to an inner circumference ring inverted buckle injection molding demoulding structure.
Background
Injection molded products, when the mold involves a back-off structure, are generally complex. Particularly, the periphery of the die is provided with the inverted buckles, so that the periphery of the die is required to be provided with the slide blocks for demolding, and the slide blocks are difficult to design. Usually, an oil cylinder with a sliding block is adopted for demolding, or a structure with a large sliding block is adopted, so that the demolding is very complicated, the cost is high, and the demolding effect is not good.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide an inverted injection molding demolding structure for an inner peripheral ring with a good demolding effect.
Disclosure of Invention
The invention aims to provide an inner circumference ring back-off injection molding demoulding structure to relieve the technical problem of poor demoulding effect in the prior art.
In a first aspect, an embodiment of the present invention provides an inner periphery ring back-off injection molding demolding structure, including a first fixing plate, a lower template, an upper template, a second fixing plate, a front mold core and a rear mold core;
the lower template is arranged between the first fixing plate and the upper template, and the upper template is arranged between the lower template and the second fixing plate;
the front mold core is arranged on the lower template, and the rear mold core is arranged on the upper template;
the lower template and the front die core are both provided with an inclined guide post;
a plurality of outer sliding blocks are arranged on the upper die plate in a sliding manner and are all connected with the inclined guide post, so that the inclined guide post can drive the outer sliding blocks to slide on the upper die plate;
the rear die core is internally provided with a first inner slide block and a second inner slide block in a sliding manner, the first inner slide block is connected with the inclined guide post so that the inclined guide post can drive the first inner slide block to slide on the rear die core, and the upper die plate is provided with a driving piece for driving the second inner slide block;
the injection molding machine is characterized in that a tapered wedge shovel machine is fixedly arranged on the first fixing plate, a front mold sliding block is arranged on the tapered wedge shovel machine, and when the lower template is far away from the first fixing plate, the front mold sliding block is far away from an injection molding piece.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein one end of the tapered wedge shovel is fixedly disposed on the first fixing plate, the other end of the tapered wedge shovel is wedge-shaped, a limit slide rail is disposed at the wedge-shaped end of the tapered wedge shovel, and a limit slide groove adapted to the limit slide rail is disposed on the front mold slider, so that when the lower mold plate is far away from the first fixing plate, the front mold slider can be far away from an injection molding piece;
and the front mould sliding block is provided with a forming surface for forming the inner side of the injection molding piece.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the outer slider includes a first outer slider, a second outer slider, and a third outer slider;
the first outer slide block, the second outer slide block and the third outer slide block are all provided with guide post holes matched with the inclined guide posts;
and the first outer side sliding block, the second outer side sliding block and the third outer side sliding block are all provided with molding surfaces for molding the outer side of the injection molding part.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a forming surface extending along a first direction is disposed on one side of the first inner sliding block, an inclined top is inserted into the first inner sliding block, the inclined top and the first inner sliding block cooperate to form a forming surface extending along a second direction, and the first direction intersects with the second direction;
a cavity is formed in the first inner sliding block, an inclined top seat is slidably arranged in the cavity, the inclined top is slidably sleeved on the inclined top seat, and the inclined top can vertically slide;
the first inner slide block is provided with an inclined mounting hole for mounting the inclined top, and the inclined mounting hole is farther away from the inclined top seat and is closer to the rear die core.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a positioning element is inserted into the inclined top seat, a first positioning arc-shaped groove adapted to the positioning element is formed in the rear mold core, and a second positioning arc-shaped groove adapted to the positioning element is formed in the cavity;
before demolding, the second positioning arc-shaped groove is closer to the molded surface than the first positioning arc-shaped groove;
before the demolding, one end of the positioning piece is abutted to the inner wall of the cavity, and the other end of the positioning piece is located in the first positioning arc-shaped groove.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an inclined top limiting member is disposed on the inclined top base, and an inclined top limiting groove adapted to the inclined top limiting member is disposed on the rear mold core.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a lifting rod is disposed on an outer wall of the upper template, a lock catch is disposed on an outer wall of the lower template, and an unlocking rod is disposed on the first fixing plate;
a spring and a lock tongue plate are arranged in the lock catch, and a clamping groove clamped with the lock tongue plate is formed in the lifting rod;
the unlocking rod is provided with an arc-shaped bulge, the lock tongue plate is provided with a lock head capable of being abutted against the arc-shaped bulge, and when the arc-shaped bulge is abutted against the lock head, the lock tongue plate is disengaged from the clamping groove.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a plurality of unthreaded holes are formed in the lower template, and limit bolts are disposed in the unthreaded holes and fixedly connected to the first fixing plate.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the lower mold plate and the upper mold plate are both provided with cooling pipelines.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an injection molding pipeline is arranged on the second fixing plate, and the injection molding pipeline is connected to the upper mold plate.
Has the advantages that:
the embodiment of the invention provides an inner periphery ring back-off injection molding demoulding structure which comprises a first fixing plate, a lower template, an upper template, a second fixing plate, a front mould core and a rear mould core, wherein the first fixing plate is arranged on the upper template; the lower template is arranged between the first fixing plate and the upper template, and the upper template is arranged between the lower template and the second fixing plate; the front mold core is arranged on the lower mold plate, and the rear mold core is arranged on the upper mold plate; the lower template and the front die core are both provided with an inclined guide pillar; the upper die plate is provided with a plurality of outer sliding blocks in a sliding manner, and the outer sliding blocks are connected with the inclined guide posts so that the inclined guide posts can drive the outer sliding blocks to slide on the upper die plate; the rear die core is internally provided with a first inner slide block and a second inner slide block in a sliding manner, the first inner slide block is connected with the inclined guide post so that the inclined guide post can drive the first inner slide block to slide on the rear die core, and the upper die plate is provided with a driving piece for driving the second inner slide block; the first fixed plate is fixedly provided with a tapered wedge shovel machine, the tapered wedge shovel machine is provided with a front mold sliding block, and when the lower template is far away from the first fixed plate, the front mold sliding block is far away from the injection molding piece.
During the concrete use, the staff lifts up the lower bolster earlier, slide wedge shovel machine this moment can drive front mould slider and injection molding separation, then the staff is respectively cope match-plate pattern and lower bolster, the in-process of lower bolster is kept away from to the cope match-plate pattern, the relative cope match-plate pattern of a plurality of outer sliders that the oblique guide pillar of setting on cope match-plate pattern and front mould benevolence can drive on the cope match-plate pattern slides, thereby make a plurality of outer sliders keep away from the injection molding, the injection molding is kept away from to the first inner slide that the guide pillar still can drive on the back mould benevolence simultaneously to the oblique guide pillar, keep away from the injection molding through driving piece drive second inner slide at last, through such setting, can be convenient carry out the drawing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of an inner peripheral ring inverted-buckle injection molding demolding structure provided in an embodiment of the present invention;
fig. 2 is a first cross-sectional view of a schematic diagram of an inner peripheral ring inverted injection molding demolding structure provided by an embodiment of the invention;
FIG. 3 is a second cross-sectional view of a schematic illustration of an inner peripheral ring reverse injection molding ejection structure provided in an embodiment of the present invention;
FIG. 4 is a partial schematic view of an inner peripheral ring inverted injection molding demolding structure provided in an embodiment of the present invention;
FIG. 5 is an internal view of an inverted inner peripheral ring injection molding demolding structure provided in an embodiment of the present invention;
fig. 6 is a schematic view of a tapered wedge shovel machine in an inner peripheral ring back-off injection molding demolding structure provided in an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a first inner slide in an inverted inner peripheral ring injection molding ejection structure according to an embodiment of the present invention;
fig. 8 is a product produced by the inner peripheral ring inverted injection molding demolding structure provided by the embodiment of the invention.
Icon:
100-a first fixing plate; 110-a tapered wedge shovel machine; 120-front mold slide; 130-a limit slide rail;
200-a lower template; 210-an inclined guide post; 220-a limit bolt;
300-upper template; 310-a first outer slide; 320-a second outboard slider; 330-third outside slider; 340-guide post holes;
400-a second fixation plate;
500-front mold core;
600-back mold core; 610-a first inner slide; 611-inclined top; 612-inclined top seat; 613-inclined mounting holes; 614-a positioning member; 615-a first positioning arc-shaped groove; 616-a second positioning arc-shaped slot; 617-a slanted top limiter; 618-inclined top limit groove; 619 — a first through hole; 620-second inner slide; 630-a drive member; 631-a push rod;
710-a lifting bar; 720-unlocking lever; 721-arc shaped protrusions; 730-a spring; 740-a tongue-locking plate; 741-lock head.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of 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 present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, 2, 3, 4, 5, 6, 7 and 8, the present embodiment provides an inner peripheral ring back-off injection molding demolding structure, including a first fixing plate 100, a lower mold plate 200, an upper mold plate 300, a second fixing plate 400, a front mold core 500 and a rear mold core 600; the lower mold plate 200 is disposed between the first fixing plate 100 and the upper mold plate 300, and the upper mold plate 300 is disposed between the lower mold plate 200 and the second fixing plate 400; the front mold core 500 is disposed on the lower mold plate 200, and the rear mold core 600 is disposed on the upper mold plate 300; the lower template 200 and the front mold core 500 are both provided with an inclined guide post 210; a plurality of outer sliding blocks are slidably arranged on the upper die plate 300 and are all connected with the inclined guide post 210, so that the inclined guide post 210 can drive the outer sliding blocks to slide on the upper die plate 300; a first inner slide block 610 and a second inner slide block 620 are slidably arranged in the rear mold core 600, the first inner slide block 610 is connected with the inclined guide pillar 210, so that the inclined guide pillar 210 can drive the first inner slide block 610 to slide on the rear mold core 600, and a driving part 630 for driving the second inner slide block 620 is arranged on the upper mold plate 300; the first fixing plate 100 is fixedly provided with a tapered wedge shovel 110, the tapered wedge shovel 110 is provided with a front mold slider 120, and when the lower mold plate 200 is far away from the first fixing plate 100, the front mold slider 120 is far away from the injection molding piece.
During the specific use, the staff lifts up lower bolster 200 earlier, slide wedge shovel machine 110 can drive front mould slider 120 and the separation of injection molding this moment, then the staff is with cope match-plate pattern 300 and lower bolster 200 respectively, at the in-process that cope match-plate pattern 300 kept away from lower bolster 200, the oblique guide pillar 210 that sets up on cope match-plate pattern 200 and front mould benevolence 500 can drive a plurality of outer sliders on the cope match-plate pattern 300 and slide relatively, thereby make a plurality of outer sliders keep away from the injection molding, injection molding is kept away from to first interior slider 610 that the guide pillar 210 still can drive back mould benevolence 600 simultaneously, keep away from the injection molding through driving piece 630 drive second interior slider 620 at last, through such setting, can be convenient carry out the drawing of patterns to injection molding of inner periphery back-off injection molding. The driving member 630 is connected to the second inner sliding block 620 via a push rod 631.
The inclined guide post 210 is disposed on the lower mold plate 200 and the front mold insert 500, and when the lower mold plate 200 is separated from the upper mold plate 300, the inclined guide post 210 can drive the outer slide block on the upper mold plate 300 and the first inner slide block 610 and the second inner slide block 620 on the rear mold insert 600, so that the outer slide block, the first inner slide block 610 and the second inner slide block 620 are separated from the injection molding part and are far away from the injection molding part, and the injection molding part can be smoothly discharged.
It should be noted that when the inner periphery ring back-off injection molding demoulding structure provided by this embodiment is used, the first fixing plate 100, the lower template 200, the upper template 300 and the second fixing plate 400 are in an upright state, the upper template 300 is not located above the lower template 200, the second fixing plate 400 is connected with the driving end of the injection molding device, and through the driving of the injection molding device, the second fixing plate 400 can drive the upper template 300 to move horizontally and be far away from the lower template 200.
Moreover, the outer wall of the upper template 300 is provided with a lifting rod 710, the outer wall of the lower template 200 is provided with a lock catch, and the first fixing plate 100 is provided with an unlocking rod 720; a spring 730 and a lock tongue plate 740 are arranged in the lock catch, and a clamping groove clamped with the lock tongue plate 740 is formed in the lifting rod 710; the unlocking rod 720 is provided with an arc-shaped protrusion 721, the lock tongue plate 740 is provided with a lock 741 capable of abutting against the arc-shaped protrusion 721, and when the arc-shaped protrusion 721 abuts against the lock 741, the lock tongue plate 740 is disengaged from the clamping groove. When the injection molding device drives the upper template 300 to move away from the lower template 200, due to the clamping connection between the lifting rod 710 and the lock catch, the injection molding device can drive the upper template 300 and the lower template 200 to synchronously move, at this time, the first fixing plate 100 is fixed on the injection molding device, the lower template 200 can be separated from the first fixing plate 100, at this time, the tapered wedge shovel 110 can drive the front mold slider 120 to demold, and the arc-shaped protrusion 721 of the unlocking rod 720 fixed on the first fixing plate 100 can be close to the lock 741 of the tongue plate 740 in the process that the lower template 200 is away from the first fixing plate 100, after the lower template 200 moves to a set position, the arc-shaped protrusion 721 on the unlocking rod 720 can abut against the lock 741, so as to press the lock 741, so that the lock 741 drives the tongue plate 740 to press the spring 730, at this time, the lock 740 is in contact with the lifting rod 710, the upper template 300 can move, And demolding the first inner slide 610 and the second inner slide 620.
In addition, a plurality of unthreaded holes are formed in the lower template 200, limit bolts 220 are arranged in the unthreaded holes, and the limit bolts 220 are fixedly connected with the first fixing plate 100. Through the setting of spacing bolt 220, the maximum position that first fixed plate 100 was kept away from to restriction lower bolster 200 avoids lower bolster 200 to drop.
Referring to fig. 1 to 8, in an alternative of this embodiment, one end of the tapered wedge shovel 110 is fixedly disposed on the first fixing plate 100, the other end of the tapered wedge shovel 110 is wedge-shaped, a limiting slide rail 130 is disposed at one wedge-shaped end of the tapered wedge shovel 110, and a limiting slide groove adapted to the limiting slide rail 130 is disposed on the front mold slider 120, so that when the lower mold plate 200 is far away from the first fixing plate 100, the front mold slider 120 can be far away from the injection molding; the front mold slider 120 is provided with a molding surface for molding the inner side of the injection molding.
Specifically, when the lower mold plate 200 is far away from the first fixing plate 100, the tapered wedge shovel 110 is fixed on the first fixing plate 100, so that the tapered wedge shovel 110 cannot move along with the lower mold plate 200, and the front mold slider 120 is located in the front mold core 500, and driven by the lower mold plate 200, the front mold core 500 drives the front mold slider 120 to move along with the lower mold plate 200, and at this time, the front mold slider 120 moves along the limiting slide rail 130, so that the front mold slider 120 is separated from the injection molding part.
When the lower mold plate 200 is far away from the first fixing plate 100, the cam shovel 110 is far away from the front mold core 500, and the cam shovel 110 provides a space for the front mold slider 120 after being far away, so that the front mold slider 120 can move in a direction far away from the injection molded part.
Referring to fig. 1-8, in an alternative of the present embodiment, the outer slider includes a first outer slider 310, a second outer slider 320, and a third outer slider 330; the first outer slider 310, the second outer slider 320 and the third outer slider 330 are all provided with guide post holes matched with the inclined guide posts 210; the first outer slide 310, the second outer slide 320 and the third outer slide 330 are all provided with molding surfaces for molding the outer side of the injection molding part.
Specifically, when the upper mold plate 300 is separated from the lower mold plate 200, the inclined guide posts 210 on the lower mold plate 200 drive the first outer slide 310, the second outer slide 320 and the third outer slide 330 away from the injection-molded part, thereby completing the demolding operation.
Referring to fig. 1-8, in an alternative of this embodiment, one side of the slider is provided with a molding surface extending along a first direction, an oblique tip 611 is inserted into the slider, the oblique tip 611 and the slider cooperate to form a molding surface extending along a second direction, and the first direction intersects with the second direction; a cavity is formed in the sliding block, an inclined top seat 612 is slidably arranged in the cavity, an inclined top 611 is slidably sleeved on the inclined top seat 612, and the inclined top 611 can vertically slide; the slider is provided with an inclined mounting hole 613 for mounting the inclined top 611, and the inclined mounting hole 613 is farther from the inclined top seat 612 and closer to the rear mold core 600.
Specifically, during demolding, the first inner slide 610 is driven by the inclined guide post 210 to move in a direction away from the injection molded part, during the movement, the first inner slide 610 is away from the injection molded part, so that the molding surface on the first inner slide 610 is separated from the injection molded part, at this time, the molding surface formed by the inclined top 611 and the first inner slide 610 is locked with the injection molded part, so that the inclined top 611 does not move along with the first inner slide 610, so that the inclined top 611 is pulled out of the first inner slide 610, the inclined top 611 is pulled out of the slide along the inclined mounting hole 613, and the inclined mounting hole 613 is farther away from the inclined top base 612 and closer to the rear mold core 600, so that the inclined top 611 moves towards the rear mold core 600 when pulling out of the slide, so that the molding surface formed by the inclined top 611 and the slide is separated from the injection molded part, because one end of the inclined top 611 is sleeved on the inclined top base 612, the inclined top 611 cannot be pulled out of the first inner slide 610, the first inner sliding block 610 can drive the inclined top seat 612 to move, so that the inclined top 611 is far away from the injection molding piece, and demolding in two directions can be realized through the arrangement.
It should be noted that the above-mentioned method can be used as an injection molding with a relatively strong structure.
Referring to fig. 1 to 8, in an alternative of this embodiment, a positioning member 614 is inserted into the inclined top seat 612, a first positioning arc-shaped groove 615 adapted to the positioning member 614 is formed in the rear mold core 600, and a second positioning arc-shaped groove 616 adapted to the positioning member 614 is formed in the cavity; before demolding, the second positioning arc-shaped groove 616 is closer to the molding surface than the first positioning arc-shaped groove 615; before demolding, one end of the positioning member 614 abuts against the inner wall of the cavity, and the other end is located in the first positioning arc-shaped groove 615.
Specifically, during demolding, the first inner slide 610 moves away from the injection molded part, the positioning element 614 on the inclined top seat 612 is positioned by the second positioning arc-shaped groove 616 on the rear mold core 600, and the inner wall of the slide does not abut against the front wall of the inclined top seat 612, so the positioning element 614 does not move, because the positioning element 614 does not move, the inclined top seat 612 is fixed, the inclined top seat 612 supports the inclined top 611 and does not move with the first inner slide 610, and the inclined mounting hole 613 on the first inner slide 610 is farther away from the inclined top seat 612 and closer to the rear mold core 600, so when the inclined top 611 is ejected out of the first inner slide 610 by the inclined top seat 612, the inclined top 611 moves toward the rear mold core 600, and the inclined top 611 can be separated from the injection molded part.
Wherein, when the first interior slider 610 continues to keep away from the in-process of injection molding, the first location arc wall 615 of first interior slider 610 can remove to setting element 614 department, the top of setting element 614 is first location arc wall 615 this moment, the below is second location arc wall 616, and at this moment, the inner wall of first interior slider 610 can be close to the outer wall butt of one side of injection molding with oblique footstock 612, when first interior slider drives oblique footstock 612 and removes, setting element 614 atress can separate with second location arc wall 616, thereby make first interior slider 610 can drive oblique footstock 612 and remove, oblique top 611 has been separated with the injection molding completely this moment.
Wherein, through the setting of setting element 614, need not injection molding self to hold oblique top 611, improve the quality of injection molding after the drawing of patterns, reduce the probability of injection molding damage.
When the mold is not removed, one end of the positioning element 614 can abut against the inner wall of the first inner slide 610, and the other end of the positioning element passes through the first through hole 619 to be connected with the second positioning arc-shaped groove 616 of the rear mold insert 600, so that the inclined top seat 612 is fixed by the positioning element 614.
Referring to fig. 1 to 8, in an alternative of this embodiment, a slanted ejecting stopper 617 is disposed on the slanted ejecting base 612, and a slanted ejecting stopper groove 618 adapted to the slanted ejecting stopper 617 is disposed on the rear mold core 600.
Specifically, one end of the lifter stopper 617 is connected to the lifter base 612, and the other end thereof passes through the second through hole to be engaged with the lifter stopper 618.
Referring to fig. 1 to 8, in an alternative embodiment, the lower mold plate 200 and the upper mold plate 300 are provided with cooling pipes.
Specifically, the lower template 200, the front mold core 500, the upper template 300 and the rear mold core 600 are cooled through the cooling pipeline, and the quality of the injection molding piece is improved.
Referring to fig. 1 to 8, in an alternative embodiment, an injection pipeline is disposed on the second fixing plate 400, and the injection pipeline is connected to the upper plate 300.
Specifically, the injection molding material is injected between the outer slide, the first inner slide 610, the second inner slide 620 and the front mold slide 120 through the injection molding pipeline.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an inner periphery back-off injection moulding demoulding structure which characterized in that includes: the die comprises a first fixing plate (100), a lower template (200), an upper template (300), a second fixing plate (400), a front die core (500) and a rear die core (600);
the lower die plate (200) is arranged between the first fixing plate (100) and the upper die plate (300), and the upper die plate (300) is arranged between the lower die plate (200) and the second fixing plate (400);
the front mold core (500) is arranged on the lower template (200), and the rear mold core (600) is arranged on the upper template (300);
the lower template (200) and the front die core (500) are both provided with an inclined guide post (210);
a plurality of outer sliding blocks are slidably arranged on the upper die plate (300), and are all connected with the inclined guide post (210) so that the inclined guide post (210) can drive the outer sliding blocks to slide on the upper die plate (300);
a first inner sliding block (610) and a second inner sliding block (620) are slidably arranged in the rear die core (600), the first inner sliding block (610) is connected with the inclined guide post (210) so that the inclined guide post (210) can drive the first inner sliding block (610) to slide on the rear die core (600), and a driving piece (630) for driving the second inner sliding block (620) is arranged on the upper die plate (300);
the injection molding machine is characterized in that a wedge shovel machine (110) is fixedly arranged on the first fixing plate (100), a front mold sliding block (120) is arranged on the wedge shovel machine (110), and when the lower template (200) is far away from the first fixing plate (100), the front mold sliding block (120) is far away from an injection molding piece.
2. The inner periphery ring back-off injection molding demolding structure according to claim 1, wherein one end of the wedge shovel (110) is fixedly arranged on the first fixing plate (100), the other end of the wedge shovel (110) is wedge-shaped, a limiting slide rail (130) is arranged at one wedge-shaped end of the wedge shovel (110), a limiting slide groove matched with the limiting slide rail (130) is formed in the front mold slider (120), so that when the lower template (200) is far away from the first fixing plate (100), the front mold slider (120) can be far away from an injection molding piece;
and a molding surface for molding the inner side of the injection molding piece is arranged on the front mold sliding block (120).
3. The inner peripheral ring inverted buckle injection molding ejection structure according to claim 1, wherein the outer slide includes a first outer slide (310), a second outer slide (320), and a third outer slide (330);
the first outer sliding block (310), the second outer sliding block (320) and the third outer sliding block (330) are all provided with guide post holes matched with the inclined guide posts (210);
and the first outer side sliding block (310), the second outer side sliding block (320) and the third outer side sliding block (330) are respectively provided with a molding surface for molding the outer side of an injection molding part.
4. The inner periphery ring back-off injection molding demoulding structure according to claim 1, wherein one side of the first inner sliding block (610) is provided with a molding surface extending along a first direction, an inclined top (611) is inserted into the first inner sliding block (610), the inclined top (611) and the first inner sliding block (610) are matched to form a molding surface extending along a second direction, and the first direction is intersected with the second direction;
a cavity is formed in the first inner sliding block (610), an inclined top seat (612) is slidably arranged in the cavity, the inclined top (611) is slidably sleeved on the inclined top seat (612), and the inclined top (611) can vertically slide;
the first inner slide block (610) is provided with an inclined mounting hole (613) for mounting the inclined top (611), and the inclined mounting hole (613) is farther away from the inclined top seat (612) and closer to the rear mold core (600).
5. The inner periphery ring back-off injection molding demolding structure according to claim 4, wherein a positioning piece (614) is inserted on the inclined top seat (612), a first positioning arc-shaped groove (615) matched with the positioning piece (614) is formed in the rear mold core (600), and a second positioning arc-shaped groove (616) matched with the positioning piece (614) is formed in the cavity;
before demolding, the second positioning arc-shaped groove (616) is closer to a molding surface than the first positioning arc-shaped groove (615);
before demolding, one end of the positioning piece (614) is abutted to the inner wall of the cavity, and the other end of the positioning piece is positioned in the first positioning arc-shaped groove (615).
6. The inner periphery ring back-off injection molding and demolding structure according to claim 5, wherein the inclined top seat (612) is provided with an inclined top limiting piece (617), and the rear mold core (600) is provided with an inclined top limiting groove (618) adapted to the inclined top limiting piece (617).
7. The inner peripheral ring inverted-buckle injection molding demolding structure as claimed in any one of claims 1 to 6, wherein a lifting rod (710) is arranged on the outer wall of the upper template (300), a lock catch is arranged on the outer wall of the lower template (200), and an unlocking rod (720) is arranged on the first fixing plate (100);
a spring (730) and a lock tongue plate (740) are arranged in the lock catch, and a clamping groove clamped with the lock tongue plate (740) is formed in the lifting rod (710);
the unlocking rod (720) is provided with an arc-shaped protrusion (721), the lock tongue plate (740) is provided with a lock head (741) capable of being abutted against the arc-shaped protrusion (721), and when the arc-shaped protrusion (721) is abutted against the lock head (741), the lock tongue plate (740) is disengaged from the clamping groove.
8. The inner periphery ring back-off injection molding demolding structure as claimed in any one of claims 1 to 6, wherein a plurality of unthreaded holes are formed in the lower template (200), limit bolts (220) are arranged in the unthreaded holes, and the limit bolts (220) are fixedly connected with the first fixing plate (100).
9. The inner periphery ring inverted-buckle injection molding demolding structure as claimed in any one of claims 1-6, wherein a cooling pipeline is arranged on each of the lower mold plate (200) and the upper mold plate (300).
10. The inner peripheral ring inverted-buckle injection-molding demolding structure as claimed in any one of claims 1-6, wherein an injection molding pipeline is arranged on the second fixing plate (400), and the injection molding pipeline is connected with the upper mold plate (300).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011011961.4A CN112092311A (en) | 2020-09-23 | 2020-09-23 | Inner periphery circle back-off injection moulding demoulding structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011011961.4A CN112092311A (en) | 2020-09-23 | 2020-09-23 | Inner periphery circle back-off injection moulding demoulding structure |
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