CN210148608U - Injection mold with secondary ejection - Google Patents
Injection mold with secondary ejection Download PDFInfo
- Publication number
- CN210148608U CN210148608U CN201920491974.2U CN201920491974U CN210148608U CN 210148608 U CN210148608 U CN 210148608U CN 201920491974 U CN201920491974 U CN 201920491974U CN 210148608 U CN210148608 U CN 210148608U
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- lower die
- telescopic block
- die body
- plate
- injection mold
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Abstract
The utility model discloses a secondary ejection injection mold, which comprises an upper mold and a lower mold, wherein the lower mold comprises a lower mold body, a lower mold base plate, a movable part and a plurality of thimbles; the lower die body is provided with a concave part for molding a product, and the ejector pin is used for ejecting the product; the lower die body is provided with a telescopic block which can stretch out of the end part of the lower die body in a protruding way, and the movable part is provided with a push rod; when the part of the telescopic block protruding out of the end part of the lower die body is pushed by the push rod, the lower die body can move; the end part of the lower die base plate is provided with a lug, and the lug and the telescopic block are respectively provided with a first inclined plane and a second inclined plane; when the telescopic block rises relative to the convex block, the first inclined plane presses against the second inclined plane, the telescopic block retracts, and the telescopic block is separated from the push rod. Realize that the secondary is ejecting through single moving part, lower mould body, lug and flexible piece, be applicable to the mould that has darker die cavity, under moving part, lower mould body, lug and flexible piece interact, make the working of plastics realize automatic drawing of patterns, both practiced thrift manufacturing cost, greatly guaranteed the working of plastics quality.
Description
Technical Field
The utility model relates to a mould especially relates to a secondary ejecting injection mold.
Background
In the existing demoulding technology, a single moving part is mostly used, single ejection is realized, the structure is simple, and the action is simple; in the process design, when the ejector pins on the ejector pin plate eject the product to a certain position, the product is manually taken down, automatic demolding cannot be realized, manpower and material resources are wasted, and the production cost is increased. For some plastic parts with deep cavity structures, the quality of the product can be greatly influenced by ejecting the plastic parts by one-time forcing.
SUMMERY OF THE UTILITY MODEL
For overcoming prior art's not enough, solve the relatively poor problem of quality of the ejecting product of prior art, the utility model discloses a technical scheme be:
a secondary ejection injection mold comprises an upper mold and a lower mold, wherein the lower mold comprises a lower mold body, a lower mold base plate and a movable part which are arranged in sequence; the lower die base plate and the lower die body are both provided with through holes for containing the ejector pins, the through holes of the lower die body are communicated to the die cavity, and the ejector pins are used for ejecting the product; the lower die body is provided with a telescopic block which can stretch out the end part of the lower die body in a protruding way, and the end part of the movable part, which corresponds to the telescopic block, is provided with a push rod; when the part of the telescopic block protruding out of the end part of the lower die body is pushed by the push rod, the lower die body can move; the end part of the lower die base plate corresponding to the telescopic block is provided with a convex block, and the convex block and the telescopic block are respectively provided with a first inclined plane and a second inclined plane; when the telescopic block ascends relative to the convex block, the first inclined plane is pressed against the second inclined plane to drive the telescopic block to retract, and the telescopic block is separated from the push rod.
According to another embodiment of the present invention, the mold further comprises an insert for molding the concave portion of the product, wherein the upper end of the insert is connected to the cavity, and the lower end of the insert is connected to the lower mold substrate; when the lower die body rises, the connection of the lower die base plate to the insert is used for controlling the insert to be separated from the cavity.
According to another embodiment of the present invention, further, the movable member comprises an upper plate and a lower plate detachably connected to each other; the upper plate and the lower plate are separated for dismounting the thimble; when the upper plate and the lower plate are disassembled, the ejector pins can be pulled away from the upper plate and the lower plate.
According to another embodiment of the present invention, further, a first inclined plane and a sliding groove are arranged side by side on one side of the bump close to the lower mold substrate; the sliding groove is used for accommodating the push rod to slide up and down and is also used for controlling the push rod to slide directionally.
According to another embodiment of the present invention, further, the lower die body is provided with an elastic member, and the elastic member is used for driving the telescopic block to stretch and reset in a protruding manner.
According to another embodiment of the present invention, further, the lower mold body comprises a floating plate and a lower mold core, and the upper mold comprises an upper mold core; when the upper mold core and the lower mold core are jointed, the upper mold core and the lower mold core enclose a mold cavity.
According to another embodiment of the present invention, further, a cooling flow channel is provided in the lower mold body, the cooling flow channel partially surrounds the concave portion, and the cooling flow channel is used for flowing a cooling medium.
According to another embodiment of the present invention, the lower mold body further comprises a floating plate and a lower mold core, wherein the upper end of the floating plate is provided with a concave hole for accommodating the lower mold core, and the concave part is arranged in the lower mold core; the input port and the output port of cooling runner set up in the floating plate lateral wall, and the cooling runner is including the input section that communicates in proper order, around section and output section, and input section and output section all set up on the floating plate, around the section setting at lower mould benevolence and be used for around the concave part.
According to the utility model discloses a further embodiment, it is further that the input section all is provided with the sealing washer with the hookup location around the section, around the hookup location of section and output section.
The utility model discloses a pair of ejecting injection mold of secondary, it is ejecting to have following beneficial effect and realize the secondary through single moving part, lower mould body, lug and flexible piece, is applicable to the mould that has darker die cavity, under single moving part, lower mould body, lug and flexible piece mutually supporting effect, makes the working of plastics realize automatic drawing of patterns, has both practiced thrift manufacturing cost, has also greatly guaranteed the working of plastics quality.
Drawings
Fig. 1 is a sectional view of the mold of the present invention;
FIG. 2 is a schematic structural view of the lower mold of the present invention;
fig. 3 is a cross sectional view of a first cutting position of the lower die of the present invention;
fig. 4 is a cross sectional view of a second cutting position of the lower die of the present invention;
fig. 5 is a flow chart of the operation of the lower mold of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, the injection mold with double ejection comprises an upper mold 1 and a lower mold 2, wherein the upper mold 1 comprises an upper mold fixing plate 11 and an upper mold core 12. As shown in fig. 1 to 5, the lower mold 2 includes a lower mold body 21, a lower mold base plate 22, and a movable element 23, which are sequentially disposed; the lower die body 21 comprises a floating plate 21a and a lower die core, and a cavity is enclosed when the lower die core and the upper die core 12 are closed. A concave part for molding the product 3 is arranged on the lower die body 21, a plurality of ejector pins 24 are arranged on the movable piece 23, through holes for accommodating the ejector pins 24 are formed in the lower die base plate 22 and the lower die body 21, the through holes of the lower die body 21 are communicated with the cavity, and the ejector pins 24 are used for ejecting the product 3; the lower die body 21 is provided with a telescopic block 25 which can protrude out of the end part, and the end part of the movable piece 23 corresponding to the telescopic block 25 is provided with a push rod 26; when the part of the telescopic block 25 protruding out of the end part of the lower die body 21 is pushed by the push rod 26, the lower die body 21 can move; a lug 27 is arranged at the end part of the lower die base plate 22 corresponding to the telescopic block 25, and the lug 27 and the telescopic block 25 are respectively provided with a first inclined surface 27a and a second inclined surface 25 a; when the telescopic block 25 ascends relative to the convex block 27, the first inclined surface 27a presses against the second inclined surface 25a to drive the telescopic block 25 to retract, and the telescopic block 25 is separated from the push rod 26.
In the injection molding machine, a lower die 2 is connected with a frame through a guide structure, such as a guide rod, a guide groove and a guide rail. The lower die 2 is connected with a first sliding power piece, and the first sliding power piece is used for driving the lower die 2 to be far away from the upper die 1; the first sliding power member is mainly connected with the lower die base plate 22. When the first sliding power piece drives the lower die base plate 22 to slide, the lower die body 21 is driven to move based on the mutual friction force of the product 3, the thimble 24, the insert 28, the push rod 26 and the like; alternatively, the first slope 27a drives the second slope 25a to move down.
The moving part 23 is connected with a second sliding power part, and the second sliding power part is used for driving the moving part 23 to slide. The first sliding power part and the second sliding power part can be air cylinders or hydraulic cylinders; or a motor and other transmission structures, such as a screw nut pair and a crank slider structure.
An insert 28 (core) for molding a concave portion of the product 3 is further included, an upper end of the insert 28 is connected to the cavity, and a lower end of the insert 28 is connected to the lower mold base 22; the connection of the lower die base plate 22 to the insert 28 controls the release of the insert 28 from the cavity when the lower die body 21 is raised. The lower mold base plate 22 is provided with an attachment plate for fixing an insert. As shown in the drawings, the portion of the insert 28 for molding the product recess is small, and the middle portion thereof is large; part of the thimble passes through.
The movable member 23 includes an upper plate 23a and a lower plate 23b detachably connected; the upper plate 23a and the lower plate 23b are separated for dismounting the thimble 24; when the upper plate 23a and the lower plate 23b are separated, the ejector pins 24 can be pulled out from the upper plate 23a and the lower plate 23 b.
A first inclined surface 27a and a sliding groove 27b are arranged side by side on one side of the lug 27 close to the lower die base plate 22; the sliding groove 27b is used for accommodating the push rod 26 to slide up and down, and the sliding groove 27b is also used for controlling the push rod 26 to slide directionally.
The lower die body 21 is provided with an elastic piece, and the elastic piece is used for driving the telescopic block 25 to stretch convexly and reset. The elastic member may be a spring, a disc spring, an elastic plastic, or other elastic material.
The lower die body 21 comprises a floating plate 21a and a lower die core 21b, and the upper die 1 comprises an upper die 1 core; when the upper die 1 core is jointed with the lower die core 21b, the upper die core and the lower die core enclose a die cavity.
The lower die body 21 is provided therein with a cooling flow passage partially surrounding the recess, the cooling flow passage being used for flowing a cooling medium.
The lower die body 21 comprises a floating plate 21a and a lower die core 21b, the upper end of the floating plate 21a is provided with a concave hole for accommodating the lower die core 21b, and the concave part is arranged on the lower die core 21 b; the input port and the output port of cooling runner set up in floating plate 21a lateral wall, and the cooling runner is including the input section that communicates in proper order, around section and output section, and input section and output section all set up on floating plate 21a, surround the section and set up in lower mould benevolence 21b and be used for around the concave part. As shown in fig. 3, the connection position of the input section and the surrounding section and the connection position of the surrounding section and the output section are provided with sealing rings. The direction of the cooling medium input is V as shown in FIGS. 2 and 31Direction, output direction of cooling medium V as shown in FIGS. 2 and 32And (4) direction.
As shown in fig. 1 and 5, an injection molding method includes steps a to f. Step a, closing an upper die 1 and a lower die 2, and injecting a material into a cavity; b, the lower die 2 is far away from the upper die 1; step c, the moving part 23 drives the thimble 24 and the push rod 26 to slide, the push rod 26 pushes the part of the telescopic block 25 protruding out of the end part of the lower die body 21, the lower die base plate 22 is paused, the lower die body 21 drives the product 3 to synchronously ascend, and the insert 28 gradually separates from the product 3; step d, after the lower die body 21 is lifted to the height of H1, the first inclined surface 27a of the lug 27 connected with the lower die base plate 22 is pressed against the second inclined surface 25a of the telescopic block 25, and the lower die body 21 and the thimble 24 continue to be lifted while the telescopic block 25 gradually retracts into the lower die body 21; step e, the telescopic block 25 retracts to the right position, the telescopic block 25 is separated from the push rod 26, the movable piece 23 drives the thimble 24 to continue to ascend, and the thimble 24 gradually pushes the product 3 out of the lower die body 21; step f, after the product 3 is taken away, the lower die substrate 22 and the lower die body 21 rise;
when the lower die base plate 22 stops rising, the second inclined surface 25a is separated from the first inclined surface 27a, and the elastic piece drives the telescopic block 25 to be in a protruding state;
in the ascending process of the lower die base plate 22, the lower die body 21 ascends by means of the friction force of the insert 28 and/or the push rod 26, the lower die body 21 is firstly attached to the upper die 1, then the lower die base plate 22 continuously ascends, and the telescopic block 25 gradually protrudes and resets; or, in the process of lifting the lower die base plate 22, the lower die base plate 22 is lifted relative to the lower die body 21, the telescopic block 25 is gradually protruded and restored, and then the lower die base plate 22 pushes the lower die body 21 to lift.
In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides a ejecting injection mold of secondary which characterized in that: the device comprises an upper die (1) and a lower die (2), wherein the lower die (2) comprises a lower die body (21), a lower die base plate (22) and a movable piece (23) which are arranged in sequence; a concave part for molding a product (3) is arranged on the lower die body (21), a plurality of ejector pins (24) are arranged on the movable part (23), through holes for accommodating the ejector pins (24) are formed in the lower die base plate (22) and the lower die body (21), the through holes of the lower die body (21) are communicated with the cavity, and the ejector pins (24) are used for ejecting the product (3); a telescopic block (25) capable of protruding out of the end part of the lower die body (21) is arranged in the lower die body, and a push rod (26) is arranged at the end part of the movable piece (23) corresponding to the telescopic block (25); when the part of the telescopic block (25) protruding out of the end part of the lower die body (21) is pushed by the push rod (26), the lower die body (21) can move; a lug (27) is arranged at the end part of the lower die base plate (22) corresponding to the telescopic block (25), and the lug (27) and the telescopic block (25) are respectively provided with a first inclined surface (27a) and a second inclined surface (25 a); when the telescopic block (25) ascends relative to the convex block (27), the first inclined plane (27a) presses against the second inclined plane (25a) to drive the telescopic block (25) to retract, and the telescopic block (25) is separated from the push rod (26).
2. The double-ejection injection mold of claim 1, wherein: the die also comprises an insert (28) used for molding the concave part of the product (3), wherein the upper end of the insert (28) is connected into the die cavity, and the lower end of the insert (28) is connected with the lower die base plate (22); when the lower die body (21) is lifted, the connection of the lower die base plate (22) to the insert (28) is used for controlling the insert (28) to be separated from the cavity.
3. A double ejection injection mold according to claim 1 or 2, wherein: the movable piece (23) comprises an upper plate (23a) and a lower plate (23b) which are detachably connected; the upper plate (23a) and the lower plate (23b) are separated for dismounting the thimble (24); when the upper plate (23a) and the lower plate (23b) are separated, the ejector pin (24) can be pulled out from the upper plate (23a) and the lower plate (23 b).
4. The double-ejection injection mold of claim 1, wherein: a first inclined plane (27a) and a sliding groove (27b) are arranged on one side, close to the lower die base plate (22), of the bump (27) side by side; the sliding groove (27b) is used for accommodating the push rod (26) to slide up and down, and the sliding groove (27b) is also used for controlling the push rod (26) to slide directionally.
5. A double ejection injection mold according to claim 1 or 4, wherein: the lower die body (21) is provided with an elastic piece, and the elastic piece is used for driving the telescopic block (25) to stretch and reset in a protruding mode.
6. A double ejection injection mold according to claim 1 or 2, wherein: the lower die body (21) comprises a floating plate (21a) and a lower die core (21b), and the upper die (1) comprises an upper die core (1); when the upper die core (1) is attached to the lower die core (21b), the upper die core and the lower die core enclose a die cavity.
7. A double ejection injection mold according to claim 1 or 2, wherein: and a cooling flow channel is arranged in the lower die body (21), the cooling flow channel partially surrounds the concave part, and the cooling flow channel is used for flowing a cooling medium.
8. The double-ejection injection mold of claim 7, wherein: the lower die body (21) comprises a floating plate (21a) and a lower die core (21b), the upper end of the floating plate (21a) is provided with a concave hole for accommodating the lower die core (21b), and the concave part is arranged on the lower die core (21 b); the input port and the output port of cooling runner set up in floating plate (21a) lateral wall, and the cooling runner is including the input section that communicates in proper order, around section and output section, and input section and output section all set up on floating plate (21a), surround the section and set up in lower mould benevolence (21b) and be used for around the concave part.
9. The double-ejection injection mold of claim 8, wherein: and the connecting positions of the input section and the surrounding section and the connecting positions of the surrounding section and the output section are both provided with sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920491974.2U CN210148608U (en) | 2019-04-11 | 2019-04-11 | Injection mold with secondary ejection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920491974.2U CN210148608U (en) | 2019-04-11 | 2019-04-11 | Injection mold with secondary ejection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210148608U true CN210148608U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920491974.2U Expired - Fee Related CN210148608U (en) | 2019-04-11 | 2019-04-11 | Injection mold with secondary ejection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210148608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110001001A (en) * | 2019-04-11 | 2019-07-12 | 精英模具（珠海）有限公司 | A kind of injection mold and its injection moulding process of Double-ejection |
-
2019
- 2019-04-11 CN CN201920491974.2U patent/CN210148608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110001001A (en) * | 2019-04-11 | 2019-07-12 | 精英模具（珠海）有限公司 | A kind of injection mold and its injection moulding process of Double-ejection |
| CN110001001B (en) * | 2019-04-11 | 2024-04-19 | 精英模具（珠海）有限公司 | Injection mold capable of realizing secondary ejection and injection molding method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200317 |