CN210705852U - Secondary ejection forced demolding structure - Google Patents
Secondary ejection forced demolding structure Download PDFInfo
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- CN210705852U CN210705852U CN201921412462.9U CN201921412462U CN210705852U CN 210705852 U CN210705852 U CN 210705852U CN 201921412462 U CN201921412462 U CN 201921412462U CN 210705852 U CN210705852 U CN 210705852U
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- thimble
- bottom plate
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- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
A secondary ejection forced demoulding structure belongs to the technical field of injection moulds, and comprises a mould core, a limiting template, an ejector plate, a bottom plate and an ejector post which are arranged from top to bottom, wherein a limiting base is fixed in the ejector plate, a plurality of primary thimbles are detachably mounted on the limiting base, the plurality of primary thimbles are in interference fit with demoulding workpieces, the lower end of the limiting base is elastically connected with the bottom plate, secondary thimbles which are in interference fit with the demoulding workpieces are also fixed on the ejector plate, and the ejector post is abutted against the ejector plate after passing through the bottom plate and pushes the primary thimbles and the secondary thimbles to eject the demoulding workpieces. The demoulding workpiece is easy to fall off, and the automation of the mould production line is convenient to realize.
Description
Technical Field
The utility model relates to an injection mold technical field especially relates to an ejecting forced demoulding structure of secondary.
Background
Injection molds are tools that produce plastic articles and also impart complete structure and precise dimensions to the plastic articles. Injection molding is a process used to mass produce some parts with complex shapes. Specifically, the heated and melted plastic is injected into a mold cavity under high pressure by a special injection molding machine, and a molded product is obtained after cooling and solidification.
The secondary ejection mechanism is commonly used in occasions where products have large packing force on the ejector pins or special ejection requirements, and some products can wrap the ejector pins or obliquely eject due to the requirements of modeling and structure, so that the products are not easy to fall off and production automation is not easy to form. The former has the advantages of good ejection effect, suitability for secondary ejection of multiple products at multiple positions, complex structure, and high processing cost and maintenance cost; the latter has the advantages of flexible structure, capability of realizing local secondary ejection of products, low overall structure cost and low product rejection rate, and has the defects that the structure is eccentric in stress and easy to clamp, the ejection speed of the ejector pins is uneven, the products are easy to eject, and a plurality of ejector pins cannot be arranged around the ejection movable block due to the structural limitation of the ejection movable block, for the products made of PC materials, the material of an A13T ceiling lamp buckle structure is made of the PC material, the head of the buckle is slightly buckled, and a single ejector pin is used for ejecting the products, so that the buckle surface of the PC material products is easily scratched, and the rejection rate of the products is increased.
How to design a simple structure, with low costs, easy maintenance, ejecting operation is stable, can reduce the drawing of patterns rejection rate and can break away from the secondary ejection structure of the plastic product of slight back-off is the place that needs improvement of present injection mold.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an ejecting forced demoulding structure of secondary, it needs to do moulds core pulling structure such as slider or oblique top and handles the back-off to have mainly solved before the ejecting operation of traditional ejecting structure of secondary, and scratch product easily when ejecting, increase the problem of product rejection rate, aim at, it is simultaneously contradicted ejecting with the drawing of patterns work piece through setting up a plurality of thimbles and secondary thimble, the rethread secondary thimble is ejecting with the drawing of patterns work piece, make ejecting operation more stable, scratch drawing of patterns work piece has been avoided, the rejection rate of the drawing of patterns has been reduced.
In order to achieve the above object, the present invention provides a technical solution for solving the technical problem: ejecting compulsory demoulding structure of secondary, including mould benevolence, spacing template, thimble board, bottom plate and the fore-set that from top to bottom set up, the thimble board internal fixation has spacing base, demountable installation has a plurality of thimbles once on the spacing base, and a plurality of thimbles are contradicted with the drawing of patterns work piece and are cooperated, the lower extreme of spacing base with bottom plate elasticity links to each other, still be fixed with the secondary thimble of contradicting with the drawing of patterns work piece on the thimble board, the fore-set pass behind the bottom plate with the thimble board is inconsistent and is promoted a thimble and secondary thimble action will the drawing of patterns work piece is ejecting.
Further, the thimble board includes the last thimble board and the lower thimble board of range upon range of setting from top to bottom, go up the thimble board with spacing joint of limit base, be provided with elastic element down in the thimble board, elastic element's one end with limit base is fixed to link to each other, elastic element's the other end with the bottom plate is fixed to link to each other.
Further, go up and be provided with shoulder hole I on the thimble board, shoulder hole I with spacing base joint cooperation, be provided with down in the thimble board with the leading hole that I communicates with each other of shoulder hole, set up in the leading hole elastic element.
Further, spacing base is including dismantling base body and stopper I of connection, base body sets up the lower part of shoulder hole I, stopper I sets up the upper portion of shoulder hole I, stopper I sets up the below of spacing template, I joint of stopper is fixed with a plurality of thimbles once.
Further, go up thimble board and lower thimble board detachable connection, be provided with shoulder hole II on going up the thimble board, install in the shoulder hole II the secondary thimble.
Furthermore, a limiting block II is further fixed on the upper ejector plate, and the upper end of the limiting block II is lower than the upper end of the limiting base.
Furthermore, a supporting block is arranged between the limiting template and the bottom plate, and the limiting template, the bottom plate and the supporting block are fixedly connected through a stud.
The utility model has the advantages that:
1. the utility model discloses an install spacing base on the thimble board, demountable installation has a plurality of thimbles once in the spacing base, still be fixed with the secondary thimble on the thimble board, a plurality of thimbles once, the secondary thimble all conflicts the cooperation with the drawing of patterns work piece, spacing base lower extreme links to each other with bottom plate elasticity, it is ejecting from mould benevolence with the thimble board conflict and promote a plurality of thimbles and secondary thimble through the fore-set rebound, it is inconsistent with spacing template to reach spacing base upper end, make a thimble stop upward movement, the fore-set continues upwards to promote the thimble board and makes the secondary thimble make the drawing of patterns work piece ejecting from a thimble, simultaneously because spacing base links to each other with bottom plate elasticity, it is dead with spacing card after spacing template supports to have prevented, make the secondary thimble upwards promote the drawing of patterns work piece smoothly. The demoulding structure is simple in integral structure, and for certain demoulding workpieces with small back-off degree and flexibility, demoulding and ejection operations are more stable, scratching of the demoulding workpieces is avoided, the demoulding rejection rate is reduced, the demoulding workpieces are easy to fall off, and automation of a mould production line is facilitated; and the primary thimbles with corresponding quantity and positions can be selected according to the shape of the demoulding workpiece, so that the universality of the demoulding structure is improved, and the rejection rate of demoulding is reduced.
2. Specifically, compared with two secondary ejection mechanisms of two sets of top plate systems, the demolding structure is simple in structure, demolding workpieces are easy to machine, the mold processing and assembling period is shortened, the mold development and maintenance cost is reduced, local secondary ejection of products can be realized, and the flexibility of mold design and product design is improved; compared with a seesaw type secondary ejection mechanism, the demoulding structure enables the ejection stress of the primary thimble and the secondary thimble to be uniform, the ejection structure is more stable, the ejection speed of the primary thimble and the secondary thimble is uniform, the demoulding workpiece is not easy to eject, and the ejection efficiency and the flexibility are high.
3. Specifically, thimble board wherein includes the last thimble board and the lower thimble board of range upon range of setting from top to bottom, upward set up shoulder hole I on the thimble board, the spacing base of joint installation in shoulder hole I, set up on the thimble board down with I communicating guiding hole in shoulder hole, be used for installing elastic element, therefore, need not to dismantle thimble board down during the maintenance, only need place the clamp plate and support thimble board down between thimble board and bottom plate, then with the spacing base in shoulder hole I and the guiding hole, a thimble, elastic element dismantles and gets off to maintain or change, the maintenance to demoulding structure has been made things convenient for, and the installation has been made things convenient for.
To sum up, the utility model has the advantages of simple overall structure, the commonality is strong, the maintenance of being convenient for is changed, makes ejecting operation more stable nimble, has avoided scratch drawing of patterns work piece, has reduceed the drawing of patterns rejection rate, makes the drawing of patterns work piece drop easily, is convenient for realize the automation of mould production line.
Drawings
The contents of the various figures of the specification and the labels in the figures are briefly described as follows:
fig. 1 is a schematic structural view of the present invention;
the labels in the above figures are: 1. the die comprises a die core, 2 parts of a limiting template, 3 parts of an ejector plate, 31 parts of an upper ejector plate, 311 parts of a stepped hole I, 312 parts of a stepped hole II, 32 parts of a lower ejector plate, 321 parts of a guide hole, 4 parts of a bottom plate, 5 parts of ejector columns, 6 parts of a limiting base, 61 parts of a base body, 62 parts of a limiting block I, 7 parts of a primary ejector pin, 8 parts of a demoulding workpiece, 9 parts of a secondary ejector pin, 10 parts of an elastic element, 11 parts of a limiting block II, 12 parts of a supporting block.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses specific embodiment does: as shown in fig. 1, a secondary ejection forced demolding structure, including mould benevolence 1 that from top to bottom sets up, spacing template 2, thimble board 3, bottom plate 4 and fore-set 5, thimble board 3 internal fixation has spacing base 6, demountable installation has a plurality of thimbles 7 on the spacing base 6, a plurality of thimbles 7 conflict with drawing of patterns work piece 8 and cooperate, the lower extreme and the bottom plate 4 elasticity of spacing base 6 link to each other, still be fixed with the secondary thimble 9 of contradicting with drawing of patterns work piece 8 on the thimble board 3, the fore-set 5 passes behind bottom plate 4 and offsets with thimble board 3 and promotes a thimble 7 and the action of secondary thimble 9 and ejecting with drawing of patterns work piece 8. The ejection column 5 moves upwards to abut against the ejector plate 3 and push a plurality of primary ejectors 7 and secondary ejectors 9 to eject the demolding workpiece 8 from the mold core 1 until the upper end of the limiting base 6 abuts against the limiting template 2, so that the primary ejectors 7 stop moving upwards, the ejection column 5 continues to push the ejector plate 3 upwards to push the secondary ejectors 9 out of the primary ejectors 7, secondary ejection is completed, meanwhile, the limiting base 6 is elastically connected with the bottom plate 4, the limiting blocking of the limiting base 6 after abutting against the limiting template 2 is prevented, and the secondary ejectors 9 can smoothly push the demolding workpiece 8 upwards. The demoulding structure is simple in integral structure, and for certain demoulding workpieces with small back-off degree and flexibility, demoulding and ejection operations are more stable, scratching of the demoulding workpieces is avoided, the demoulding rejection rate is reduced, the demoulding workpieces are easy to fall off, and automation of a mould production line is facilitated; and the primary thimbles with corresponding quantity and positions can be selected according to the shape of the demoulding workpiece, so that the universality of the demoulding structure is improved, and the rejection rate of demoulding is reduced.
Specifically, thimble board 3 wherein includes the last thimble board 31 and the lower thimble board 32 of range upon range of setting from top to bottom, go up thimble board 31 and the spacing joint of spacing base 6, be provided with elastic element 10 in the thimble board 32 down, elastic element 10's one end and spacing base 6 are fixed to be continuous, elastic element 10's the other end and bottom plate 4 are fixed to be continuous, the in-process that conflicts and upwards promote with thimble board 32 down when the fore-set 5 rebound, make thimble board 31 upward movement, thereby drive spacing base 6 and the thimble 7 upward movement of installation wherein, after spacing base 6 supported with spacing template 2, can prevent under elastic element 10's effect that spacing base 6's location card is dead, and service life is improved.
Specifically, the upper ejector plate 31 is provided with a stepped hole I311, the stepped hole I311 is in clamping fit with the limiting base 6, the lower ejector plate 32 is internally provided with a guide hole 321 communicated with the stepped hole I311, and the guide hole 321 is internally provided with an elastic element 10, so that the lower ejector plate 32 is not required to be disassembled during maintenance, only a pressing plate is required to be placed between the lower ejector plate 32 and the bottom plate 4 to support the lower ejector plate 32, and then the limiting base 6, a primary ejector 7 and the elastic element 10 in the stepped hole I311 and the guide hole 321 are disassembled for maintenance or replacement, thereby facilitating the maintenance of the demoulding structure and the installation; the limiting base 6 comprises a base body 61 and a limiting block I62 which are detachably connected, the base body 61 is connected with a section with a larger aperture of a stepped hole I311 in a clamping mode through a guide hole 321, namely connected with the lower portion of the stepped hole I311 in a clamping mode, the limiting block I62 is arranged on the upper portion of the stepped hole I311, the limiting block I62 is arranged below a limiting template 2, after the limiting block I62 abuts against the limiting template 2, along with the upward pushing of a top column 5, the limiting base 6 can do downward elastic buffer motion in the stepped hole I311 and the guide hole 321, as the base body 61 and the limiting block I62 are detachably connected, a plurality of mounting holes are formed in the limiting block I62 along the height direction of the limiting block I, a primary ejector pin 7 is fixedly arranged in the mounting holes in a clamping mode, and when the limiting base 6 is mounted, the base body 61 is firstly clamped and positioned on the; then, clamping and fixing a plurality of primary thimbles 7 on the limiting block I62, and fixing the limiting block I62 provided with the plurality of primary thimbles 7 on the base body 61 through screws; finally, the elastic member 10 is installed in the guide hole 321 between the base body 61 and the base plate 4, and the installation and removal processes are simple.
In addition, the upper ejector plate 31 and the lower ejector plate 32 are detachably connected through bolts, a stepped hole II 312 is formed in the upper ejector plate 31, the secondary ejector 9 is installed in the stepped hole II 312, when the secondary ejector 9 is installed, the upper ejector plate 31 and the lower ejector plate 32 can be detached, the secondary ejector 9 is installed in the stepped hole II 312 of the upper ejector plate 31, and then the upper ejector plate 31 and the lower ejector plate 32 are fixed in a stacked manner.
In addition, a limiting block II 11 is fixed on the upper ejector plate 31, and the upper end of the limiting block II 11 is lower than the upper end of the limiting base 6, so that secondary ejection of the secondary ejector pin 9 is ensured; in order to improve the overall stability of the demoulding structure, a supporting block 12 is arranged between the limiting template 2 and the bottom plate 4, and the limiting template 2, the bottom plate 4 and the supporting block 12 are fixedly connected through studs; the primary ejector pin 7 and the secondary ejector pin 9 can select a flat ejector pin or a round ejector pin according to the shape of the demoulding workpiece 8, the demoulding workpiece 8 shown in fig. 1 is of a top lamp buckling structure and comprises a buckling main body and two clamping jaws at the end part of the buckling main body, in order to enable ejection to be more stable, the primary ejector pin 7 can be set into the flat ejector pin and is provided with two ejector pins, the primary ejector pin 7 is attached to the side edge of the clamping jaws and is abutted to the main body of the top lamp buckling structure, and the secondary ejector pin 9 can be set into the round ejector pin and is abutted to the main body of the top lamp buckling.
To sum up, the utility model has the advantages of simple overall structure, the commonality is strong, the maintenance of being convenient for is changed, makes ejecting operation more stable nimble, has avoided scratch drawing of patterns work piece, has reduceed the drawing of patterns rejection rate, makes the drawing of patterns work piece drop easily, is convenient for realize the automation of mould production line.
The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.
Claims (7)
1. The utility model provides a secondary is ejecting forces demoulding structure, its characterized in that, including mould benevolence (1), spacing template (2), thimble board (3), bottom plate (4) and fore-set (5) that from top to bottom set up, thimble board (3) internal fixation has spacing base (6), demountable installation has a plurality of thimbles (7) once on spacing base (6), and a plurality of thimbles (7) are contradicted with drawing of patterns work piece (8) and are cooperated, the lower extreme of spacing base (6) with bottom plate (4) elasticity links to each other, still be fixed with secondary thimble (9) of contradicting with drawing of patterns work piece (8) on the fore-set (3), the fore-set (5) pass behind bottom plate (4) with thimble board (3) counterbalance and promote a thimble (7) and secondary thimble (9) action will drawing of patterns work piece (8) are ejecting.
2. The secondary ejection forced demolding structure according to claim 1, wherein the ejector plate (3) comprises an upper ejector plate (31) and a lower ejector plate (32) which are stacked up and down, the upper ejector plate (31) is in limit clamping connection with the limit base (6), an elastic element (10) is arranged in the lower ejector plate (32), one end of the elastic element (10) is fixedly connected with the limit base (6), and the other end of the elastic element (10) is fixedly connected with the bottom plate (4).
3. The secondary ejection forced demolding structure as claimed in claim 2, wherein a stepped hole I (311) is formed in the upper ejector plate (31), the stepped hole I (311) is in clamping fit with the limiting base (6), a guide hole (321) communicated with the stepped hole I (311) is formed in the lower ejector plate (32), and the elastic element (10) is arranged in the guide hole (321).
4. The secondary ejection forced demolding structure as claimed in claim 3, wherein the limiting base (6) comprises a base body (61) and a limiting block I (62) which are detachably connected, the base body (61) is arranged on the lower portion of the stepped hole I (311), the limiting block I (62) is arranged on the upper portion of the stepped hole I (311), the limiting block I (62) is arranged below the limiting template (2), and a plurality of primary thimbles (7) are clamped and fixed on the limiting block I (62).
5. The secondary ejection forced demolding structure as claimed in any one of claims 2 to 4, wherein the upper ejector plate (31) and the lower ejector plate (32) are detachably connected, a stepped hole II (312) is formed in the upper ejector plate (31), and the secondary ejector pin (9) is mounted in the stepped hole II (312).
6. The secondary ejection forced demolding structure as claimed in claim 5, wherein a limiting block II (11) is further fixed on the upper ejector plate (31), and the upper end of the limiting block II (11) is lower than the upper end of the limiting base (6).
7. The secondary ejection forced demolding structure according to claim 5, wherein a supporting block (12) is arranged between the limiting template (2) and the bottom plate (4), and the limiting template (2), the bottom plate (4) and the supporting block (12) are fixedly connected through a stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921412462.9U CN210705852U (en) | 2019-08-28 | 2019-08-28 | Secondary ejection forced demolding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921412462.9U CN210705852U (en) | 2019-08-28 | 2019-08-28 | Secondary ejection forced demolding structure |
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| CN210705852U true CN210705852U (en) | 2020-06-09 |
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| CN201921412462.9U Active CN210705852U (en) | 2019-08-28 | 2019-08-28 | Secondary ejection forced demolding structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112571720A (en) * | 2020-11-26 | 2021-03-30 | 神通科技集团股份有限公司 | Injection mold and injection method for motor framework insert |
| CN114311432A (en) * | 2022-02-28 | 2022-04-12 | 东莞好景塑胶模具制造有限公司 | Asynchronous ejection die structure |
-
2019
- 2019-08-28 CN CN201921412462.9U patent/CN210705852U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112571720A (en) * | 2020-11-26 | 2021-03-30 | 神通科技集团股份有限公司 | Injection mold and injection method for motor framework insert |
| CN114311432A (en) * | 2022-02-28 | 2022-04-12 | 东莞好景塑胶模具制造有限公司 | Asynchronous ejection die structure |
| CN114311432B (en) * | 2022-02-28 | 2023-11-14 | 东莞好景塑胶模具制造有限公司 | Asynchronous ejection die structure |
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