CN216683196U - Demoulding assembly and injection mold - Google Patents
Demoulding assembly and injection mold Download PDFInfo
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- CN216683196U CN216683196U CN202123348361.XU CN202123348361U CN216683196U CN 216683196 U CN216683196 U CN 216683196U CN 202123348361 U CN202123348361 U CN 202123348361U CN 216683196 U CN216683196 U CN 216683196U
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Abstract
The utility model belongs to the technical field of injection molds, and particularly relates to a demoulding assembly and an injection mold, wherein the demoulding assembly is applied to the injection mold, and the injection mold comprises an upper die base and a lower die base; the demolding assembly is provided with a molding cavity; the molding cavity is provided with a front cavity and a rear cavity; the demoulding component comprises a first ejection mechanism, a second ejection mechanism, a displacement piece, a driving mechanism and a constraint mechanism; the first ejection mechanism comprises an ejector pin seat and a first ejector pin, the first ejector pin is sealed at the lower end of the rear cavity, the displacement piece is provided with a chute, and the ejector pin seat is provided with a guide protruding block embedded into the chute; the second ejection mechanism is sealed at the lower end of the front cavity, a second ejector pin is arranged in the second ejection mechanism, and the top surface of the second ejector pin is flush with the top surface of the second ejection mechanism; the lower die holder drives the second ejector pin to extend out of the top surface of the second ejection mechanism and move up and down; when the driving mechanism drives the displacement piece to move back and forth, the constraint mechanism limits the first ejection mechanism to move up and down. After the product is formed, the first ejection mechanism and the second ejection mechanism eject the product at set positions.
Description
Technical Field
The utility model belongs to the technical field of injection molds, and particularly relates to a demolding assembly and an injection mold.
Background
The earphone in the prior art is ejected by the demoulding mechanism after injection molding is finished, but the general demoulding mechanism directly contacts the appearance of the earphone product to eject the product, so that the outer wall of the earphone is damaged, the appearance is influenced, and the quality of the earphone is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a demoulding component and an injection mould, and aims to solve the technical problem that the appearance of an injection product is easy to wear when the injection product is demoulded in the prior art.
In order to achieve the above object, an embodiment of the present invention provides a demolding assembly, which is applied to an injection mold, where the injection mold includes an upper mold base and a lower mold base; the demolding assembly is provided with a plurality of molding cavities; the molding cavity is provided with a front cavity and a rear cavity; the demolding assembly comprises a first ejection mechanism, a displacement piece, a driving mechanism, a second ejection mechanism and a constraint mechanism; the first ejection mechanism comprises an ejector pin base and a first ejector pin, the first ejector pin is arranged on the top surface of the ejector pin base and sealed at the lower end of the rear cavity, and a plurality of guide convex blocks are arranged on the ejector pin base; the displacement piece is provided with a plurality of inclined grooves which are inclined in the vertical direction, and the guide convex blocks are movably embedded into the inclined grooves; the driving mechanism is fixedly connected with the displacement piece and drives the displacement piece to move back and forth; the second ejection mechanism is sealed at the lower end of the front cavity, a plurality of second ejector pins are arranged in the second ejection mechanism, and the top surfaces of the second ejector pins are flush with the top surface of the second ejection mechanism and can extend out of the top surface of the second ejection mechanism; the second ejector pins are fixedly connected with the lower die base, and the lower die base drives the second ejector pins to move up and down in the second ejection mechanism; the first ejection mechanism and the second ejection mechanism are limited by the limiting mechanism, and when the displacement piece moves forwards and backwards, the first ejection mechanism is limited by the limiting mechanism to move up and down.
Preferably, the two sides of the lower end of the thimble seat are respectively and inwardly provided with one guide lug, the two side surfaces of the upper end of the displacement piece are respectively provided with one chute, and the two guide lugs are respectively embedded into the two chutes.
Preferably, the injection molding machine further comprises a core-pulling sliding block, a plurality of core sliding blocks and an upper demolding part, and the core-pulling sliding block, the core sliding blocks, the upper demolding part, the first ejection mechanism and the second ejection mechanism enclose the molding cavity during injection molding.
Preferably, the number of the core sliders is two, and the two core sliders are arranged oppositely.
Preferably, the upper end of first thimble is equipped with one and pushes away the top, it includes interconnect's toper post and cylinder to push away the top, two the core slider all is equipped with a cell body, during injection moulding, two the laminating of core slider and two the cell body enclose into with the slot that pushes away the top and match.
Preferably, a circular groove penetrating through the displacement member in the thickness direction is formed in one side of the displacement member away from the first ejection mechanism, and a stop member is embedded in the circular groove.
Preferably, the driving mechanism comprises a plurality of guide rails and a sliding block sleeved on the guide rails, one end of each guide rail is fixed on the upper die base and is obliquely arranged inwards, and the sliding block slides on the guide rails.
Preferably, one end of the displacement piece, which is far away from the first ejection mechanism, is upwards provided with a protruding piece, the lower end of the sliding block is provided with a groove, and the protruding piece is in threaded connection with the groove.
In order to achieve the above object, an injection mold provided in an embodiment of the present invention includes an upper mold base, a lower mold base, an intermediate base, a gate sleeve, a positioning ring, and the demolding assembly; the upper die holder, the middle die holder and the lower die holder are sequentially arranged in the vertical direction, the upper die holder is movably connected with the middle die holder, and the middle die holder is fixedly connected with the lower die holder; the pouring gate is sleeved at the top of the upper die base and communicated with the forming cavity to be used for spraying colloid; the positioning ring is arranged at the top of the sprue bush to fix the sprue bush;
preferably, the number of drawing of patterns subassembly is four, and every two drawing of patterns subassembly sets up and forms a set of module relatively, and two sets of the module sets up side by side.
The technical scheme or the technical schemes in the demoulding component and the injection mould provided by the embodiment of the utility model at least have one of the following technical effects: after the product is formed, the first ejection mechanism and the second ejection mechanism eject the product at the position where the product does not leak, so that the appearance of the product is not damaged, and the product yield is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an injection mold according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a demolding assembly according to an embodiment of the present invention.
Fig. 3 is a top view of a stripper assembly provided by an embodiment of the present invention.
Fig. 4 is a sectional view taken along line a-a in fig. 3.
Fig. 5 is a sectional view taken along line B-B in fig. 3.
Fig. 6 is a partially enlarged view taken along the region C in fig. 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.
In the description of the embodiments of the present invention, it should be understood that, if directional indications are provided in the embodiments of the present invention, such as directions of up, down, left, right, front, back, inner, outer, etc., the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, 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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In one embodiment of the present invention, as shown in fig. 1-6, a stripper assembly 10 is provided for use with an injection mold 1, the injection mold 1 including an upper mold base 20 and a lower mold base 30. The stripper assembly 10 has a number of molding cavities (not shown). The mold cavity (not shown) has a front cavity (not shown) and a back cavity (not shown). The demolding assembly 10 includes a first ejection mechanism 11, a displacement member 12, a driving mechanism 13, a second ejection mechanism 14, and a restraining mechanism 15. The first ejection mechanism 11 includes an ejector pin base 111 and a first ejector pin 112, the first ejector pin 112 is disposed on the top surface of the ejector pin base 111 and sealed at the lower end of the rear cavity (not shown), and the ejector pin base 111 is provided with a plurality of guide protrusions 113. The displacement member 12 has inclined grooves 121, the inclined grooves 121 are inclined in a vertical direction, and the guide protrusions 113 are movably fitted into the inclined grooves 121. The driving mechanism 13 is fixedly connected to the displacement member 12 and drives the displacement member 12 to move back and forth. The second ejection mechanism 14 is sealed at the lower end of the front cavity (not shown), a plurality of second ejector pins 141 are disposed in the second ejection mechanism 14, and top surfaces of the plurality of second ejector pins 141 are flush with a top surface of the second ejection mechanism 14 and can extend out of the top surface of the second ejection mechanism 14. The second ejector pins 141 are fixedly connected to the lower die base 30, and the lower die base 30 drives the second ejector pins 141 to move up and down in the second ejection mechanism 14. The restraining mechanism 15 restrains the first ejection mechanism 11 and the second ejection mechanism 14, and when the displacement member 12 moves back and forth, the restraining mechanism 15 restrains the first ejection mechanism 11 from moving up and down. Specifically, taking the injection mold 1 as an example, the earphone has a tube and a housing connected to each other, and the inner surface of the housing faces downward. The tube is formed in the rear cavity (not shown), the shell is formed in the front cavity (not shown), the tube is provided with a position avoiding groove matched with the head of the first thimble 112, and the head of the first needle body is inserted into the position avoiding groove. The second ejector is matched below the shell, when the die is removed, the first ejector pin 112 pushes the tube body, and the second ejector pin 141 extends from the second ejector mechanism 14 to push the inner surface of the shell, so that the outer surface of the earphone is not contacted with the first ejector mechanism 11 and the second ejector mechanism 14, and the integrity of the outer surface of the earphone is protected.
In another embodiment of the present invention, as shown in fig. 6, two sides of the lower end of the thimble seat 111 are respectively provided with one of the guiding protrusions 113 inward, two sides of the upper end of the displacement member 12 are respectively provided with one of the inclined slots 121, and the two guiding protrusions 113 are respectively embedded into the two inclined slots 121. The ejector pin seat 111 can be better matched with the inclined groove 121, and ejection is more stable.
In another embodiment of the present invention, as shown in fig. 6, the present invention further includes a core-pulling slider 16, a plurality of core sliders 17, and an upper mold release 18, and during injection molding, the core-pulling slider 16, the core sliders 17, the upper mold release 18, the first ejection mechanism 11, and the second ejection mechanism 14 enclose the molding cavity (not shown). Specifically, taking the injection mold 1 as an example, the earphone has a tube and a housing connected to each other, and the inner surface of the housing faces downward. The earphone is formed in the forming cavity (not shown), after injection molding, the core-pulling slide block 16 is pulled out of the pipe body, the upper demolding part 18 is pulled out of the upper portion of the earphone, and demolding of the earphone is facilitated through the design.
In another embodiment of the present invention, as shown in fig. 4, the number of the core sliders 17 is two, and the two core sliders 17 are disposed opposite to each other. The two core sliders 17 are respectively arranged on the left side and the right side of the earphone, so that the earphone is convenient to demould.
In another embodiment of the present invention, as shown in fig. 4, a top pushing portion 114 is provided at an upper end of the first thimble 112, the top pushing portion 114 includes a tapered column 115 and a cylindrical column 116 connected to each other, each of the two core sliders 17 is provided with a slot (not shown), and during injection molding, the two core sliders 17 are attached to each other and the two slots (not shown) enclose a slot (not shown) matching with the top pushing portion 114. Specifically, taking the injection mold 1 as an example, the earphone has a tube and a housing connected to each other, and the inner surface of the housing faces downward. The tube is formed in the rear cavity (not shown), the shell is formed in the front cavity (not shown), the tube is provided with a position avoiding groove matched with the head of the first thimble 112, and the head of the first needle body is inserted into the position avoiding groove. The second ejector is matched below the shell, when the die is removed, the first ejector pin 112 pushes the tube body, the second ejector pin 141 extends out of the second ejector mechanism 14 to push the inner surface of the shell, and the tapered column 115 is arranged, so that the first ejector pin 112 can push the avoiding groove conveniently, and the labor is saved. The design mode ensures that the outer surface of the earphone is not contacted with the first ejection mechanism 11 and the second ejection mechanism 14, and the integrity of the outer surface of the earphone is protected.
In another embodiment of the present invention, as shown in fig. 4, a circular groove 122 penetrating through the displacement member 12 in the thickness direction is disposed on a side of the displacement member 12 away from the first ejection mechanism 11, and a stop member 123 is embedded in the circular groove 122. The stopper 123 limits the movement of the ejector pin seat 111, and prevents the first ejection mechanism 11 from deviating from the position to affect the demolding effect. Specifically, the stopper 123 is a bolt.
In another embodiment of the present invention, as shown in fig. 1-2, the driving mechanism 13 includes a plurality of guide rails 131 and a sliding block 132 sleeved on the guide rails 131, one end of the guide rail 131 is fixed on the upper die holder 20 and is disposed obliquely inward, and the sliding block 132 slides on the guide rails 131. The driving mode has simple structure and convenient installation.
In another embodiment of the present invention, as shown in fig. 4, a protrusion 124 is disposed upward on an end of the displacement member 12 away from the first ejection mechanism 11, a groove 133 is disposed on a lower end of the sliding block 132, and the protrusion 124 is screwed into the groove 133. The installation mode has simple structure and convenient installation.
In another embodiment of the present invention, as shown in fig. 1, there is provided an injection mold 1, comprising an upper mold base 20, a lower mold base 30, an intermediate base 40, a sprue bushing 50, a retainer ring 60, and the stripper assembly 10. The upper die holder 20, the middle die holder 40 and the lower die holder 30 are sequentially arranged in the vertical direction, the upper die holder 20 is movably connected with the middle die holder 40, and the middle die holder 40 is fixedly connected with the lower die holder 30. The sprue bush 50 is disposed on the top of the upper die base 20 and communicates with the molding cavity (not shown) for injecting glue. The retaining ring 60 is provided on top of the sprue bush 50 to secure the sprue bush 50. Specifically, colloid is injected into the sprue bush 50, the colloid in a molten state flows into the molding cavity (not shown) along the sprue bush and gradually fills the molding cavity (not shown), and after cooling and molding, the molded product is removed by the demolding assembly 10, so that production is completed, and production efficiency is effectively improved.
In another embodiment of the present invention, as shown in fig. 5, the number of the demolding assemblies 10 is four, every two demolding assemblies 10 are oppositely arranged and form a group of modules, and two groups of modules are arranged in parallel. Four products can be produced by injection molding once, and the production efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A demoulding component is applied to an injection mould, and the injection mould comprises an upper mould base and a lower mould base; the demolding assembly is provided with a plurality of molding cavities; the forming cavity is provided with a front cavity and a rear cavity; characterized in that the stripper assembly comprises:
the first ejection mechanism comprises an ejector pin seat and a first ejector pin, the first ejector pin is arranged on the top surface of the ejector pin seat and sealed at the lower end of the rear cavity, and a plurality of guide convex blocks are arranged on the ejector pin seat;
the displacement piece is provided with a plurality of inclined grooves which are inclined in the vertical direction, and the guide convex blocks are movably embedded into the inclined grooves;
the driving mechanism is fixedly connected with the displacement piece and drives the displacement piece to move back and forth;
the second ejection mechanism is sealed at the lower end of the front cavity, a plurality of second ejector pins are arranged in the second ejection mechanism, and the top surfaces of the second ejector pins are all flush with the top surface of the second ejection mechanism and can extend out of the top surface of the second ejection mechanism; the second ejector pins are fixedly connected with the lower die base, and the lower die base drives the second ejector pins to move up and down in the second ejection mechanism; and
and the constraint mechanism limits the first ejection mechanism and the second ejection mechanism, and limits the first ejection mechanism to move up and down when the displacement piece moves back and forth.
2. The stripper assembly of claim 1, wherein said guide projections are provided inwardly on both sides of a lower end of said pin boss, respectively, and said inclined grooves are provided on both sides of an upper end of said displacement member, respectively, and said two guide projections are fitted into said two inclined grooves, respectively.
3. The demolding assembly of claim 1 further comprising a core pulling slider, a plurality of core sliders and an upper demolding member, wherein during injection molding, the core pulling slider, the core slider, the upper demolding member, the first ejection mechanism and the second ejection mechanism enclose the molding cavity.
4. The stripper assembly of claim 3, wherein the number of core slides is two, the two core slides being disposed opposite one another.
5. The demolding assembly according to claim 4, wherein a pushing top portion is arranged at the upper end of the first ejector pin and comprises a conical column and a cylinder which are connected with each other, the two core sliders are respectively provided with a groove body, and during injection molding, the two core sliders are attached to each other, and the two groove bodies enclose a slot matched with the pushing top portion.
6. The stripper assembly of any of claims 1-5, wherein a circular slot is formed through the displacement member in a thickness direction of the displacement member on a side of the displacement member remote from the first ejection mechanism, and a stop member is embedded in the circular slot.
7. The stripper assembly of any of claims 1-5, wherein the drive mechanism includes a plurality of guide rails and a slide block sleeved on the guide rails, one end of the guide rails is fixed on the upper die base and is disposed obliquely inward, and the slide block slides on the guide rails.
8. The stripper assembly of claim 7, wherein the end of the displacement member remote from the first ejection mechanism is upwardly provided with a protrusion, and the lower end of the slide is provided with a recess, the protrusion being threadedly engaged with the recess.
9. An injection mold, comprising:
a plurality of the stripper assemblies of claims 1-7;
an upper die base;
a lower die holder;
the upper die base, the middle base and the lower die base are sequentially arranged along the vertical direction, the upper die base is movably connected with the middle base, and the middle base is fixedly connected with the lower die base;
the sprue bush is sleeved at the top of the upper die base and communicated with the forming cavity so as to be used for spraying colloid; and
and the positioning ring is arranged at the top of the sprue bush to fix the sprue bush.
10. An injection mold according to claim 9, wherein the number of said stripper elements is four, two of said stripper elements being arranged opposite each other and forming a set of modules, two sets of said modules being arranged side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123348361.XU CN216683196U (en) | 2021-12-28 | 2021-12-28 | Demoulding assembly and injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123348361.XU CN216683196U (en) | 2021-12-28 | 2021-12-28 | Demoulding assembly and injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216683196U true CN216683196U (en) | 2022-06-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123348361.XU Active CN216683196U (en) | 2021-12-28 | 2021-12-28 | Demoulding assembly and injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216683196U (en) |
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2021
- 2021-12-28 CN CN202123348361.XU patent/CN216683196U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Address after: 1st Floor, No. 3, Fofu Road, Foziao Village, Dalang Town, Dongguan City, Guangdong Province, 523000 Patentee after: Dongguan Youmai Electronic Technology Co.,Ltd. Address before: 523000 room 115, No. 18, biankang West Road, Houjie Town, Dongguan City, Guangdong Province Patentee before: Dongguan Youmai Electronic Technology Co.,Ltd. |