CN212653817U - Air guide ejection mechanism and rubber part injection mold with same - Google Patents
Air guide ejection mechanism and rubber part injection mold with same Download PDFInfo
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- CN212653817U CN212653817U CN201922492348.8U CN201922492348U CN212653817U CN 212653817 U CN212653817 U CN 212653817U CN 201922492348 U CN201922492348 U CN 201922492348U CN 212653817 U CN212653817 U CN 212653817U
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- ejector
- air guide
- mold
- ejection mechanism
- ejector rod
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Abstract
The utility model provides an air guide ejection mechanism and possess this air guide ejection mechanism's rubber spare injection mold, air guide ejection mechanism is used for rubber spare injection mold, include: a top plate guide post; a roof ejector plate that is connected to the roof guide post so as to be orthogonal to the axial direction of the roof guide post, and that is slidable in the axial direction of the roof guide post; the ejection spring is sleeved outside the top plate guide post and used for pushing the ejector rod ejection plate to the opposite side of the top plate guide post; the ejector rod fixing plate is fixed on one surface of the ejector rod ejector plate, which is not connected with the top plate guide pillar; and one end part of each ejector rod is fixed on the ejector rod fixing plate and extends downwards along the axial direction of the top plate guide post, and the side surfaces of the ejector rods are provided with air guide grooves. The utility model also provides a possess the rubber spare injection mold of air guide ejection mechanism.
Description
Technical Field
The utility model relates to an air guide ejection mechanism and possess this air guide ejection mechanism's rubber spare injection mold.
Background
Injection molding is a common method for producing injection products, and specifically, a material melted by heating is injected into a mold cavity from high pressure, and a formed product is obtained after cooling and solidification. In the process of injection molding, in order to make the product smoothly fall off from the mold cavity after the product is molded, an ejection mechanism is usually adopted to push the product out.
Among various injection molds, the rubber injection mold has high molding efficiency and is widely applied to the automobile part industry. However, in the actual injection molding process, because the cooling speed of the upper die and the lower die is different in the cooling process of the hot runner die, the upper die is cooled slowly, and the lower die is cooled quickly, so that the part of the rubber part contacting the lower die contracts faster than the part contacting the upper die. After the mold is opened, when the product is pushed out by the ejection mechanism, the phenomena of pits, deformation and the like on the surface of the rubber part often occur, so that the use is influenced.
Disclosure of Invention
The utility model relates to a accomplish in view of above-mentioned problem, its aim at provides an air guide ejection mechanism and possesses this air guide ejection mechanism's rubber spare injection mold, enables rubber spare injection mold to carry out the drawing of patterns smoothly through this air guide ejection mechanism, and can not lead to pit and deformation etc. to appear on the rubber spare surface.
The utility model provides an air guide ejection mechanism, this air guide ejection mechanism are used for rubber spare injection mold, include: a top plate guide post; a roof ejector plate that is connected to the roof guide post so as to be orthogonal to the axial direction of the roof guide post, and that is slidable in the axial direction of the roof guide post; the ejection spring is sleeved outside the top plate guide post and used for pushing the ejector rod ejection plate to the opposite side of the top plate guide post; the ejector rod fixing plate is fixed on one surface of the ejector rod ejector plate, which is not connected with the top plate guide pillar; and one end part of each ejector rod is fixed on the ejector rod fixing plate and extends downwards along the axial direction of the top plate guide post, and the side surfaces of the ejector rods are provided with air guide grooves.
Preferably, a portion of the gas guide groove is in gas communication with the outside, and one end of the gas guide groove extends to the vicinity of the other end of the jack.
Preferably, the plurality of ejector pins have different sizes and lengths according to the shape of the cavity of the injection mold.
Preferably, the other end of the plurality of lift pins has a profile design of a molded rubber member.
Preferably, the air guide ejection mechanism further comprises a return ejector rod, and the return ejector rod is fixed to the ejector rod fixing plate and extends downwards to limit the plurality of ejector rods.
According to the utility model discloses a further aspect provides a rubber spare injection mold, include: the air guide ejection mechanism comprises an upper die base, an upper die core fixed on the upper die base, a lower die core fixed on the lower die base, a die cavity formed by the upper die core and the lower die core, and the air guide ejection mechanism, wherein the upper die core is provided with a cavity for accommodating the air guide ejection mechanism, the air guide ejection mechanism is positioned in the cavity and is used for ejecting out a formed rubber piece, a top plate guide post of the air guide ejection mechanism is fixed on the upper die base, an ejector rod ejection plate can slide in the cavity along the longitudinal direction, a plurality of ejector rods of the air guide ejection mechanism are longitudinally inserted into the upper die core and extend to the inner cavity wall of the upper die core, and the return ejector rod of the air guide ejection mechanism is abutted against the die closing surface of the lower die core when the upper die core and the lower die.
Preferably, one end of the air guide groove of the air guide ejection mechanism is 0.7-0.8 mm away from the wall of the inner cavity of the upper mold core.
Preferably, the mold cavity is provided with a region without rubber injection, and part of the ejector rods are positioned at positions corresponding to the region without rubber injection, so that when demolding is carried out, part of the ejector rods are abutted to the region without rubber injection.
Preferably, the rubber part injection mold further comprises a lower mold ejection mechanism, the lower mold ejection mechanism is used for ejecting the molded rubber part from a lower mold, the lower mold ejection mechanism comprises a plurality of lower mold ejector rods, a lower mold ejector rod fixing plate, a lower mold ejector rod ejection plate and an ejection rod, the lower mold ejector rods are inserted into the lower mold core from bottom to top and extend to the inner cavity wall of the lower mold core, the lower mold ejector rods are fixed on the lower mold ejector rod fixing plate, the lower mold ejector rod ejection plate is fixed on the other surface of the lower mold ejector rod fixing plate, the ejection rod is used for ejecting the lower mold ejector rod ejection plate to one side of the mold cavity, and part of the lower mold ejector rods are located in positions corresponding to regions without injection molding rubber, so that when demolding is carried out, part of the lower mold ejector rods are ejected to the regions without injection molding rubber.
Through using the utility model discloses a rubber spare injection mold can avoid the rubber spare after the shaping to stay in the mould at the drawing of patterns time lag to utilize the air guide function, avoided producing pit, deformation etc. on the rubber spare ejecting.
Drawings
Fig. 1 is a sectional view showing a structure of a rubber injection mold according to an embodiment of the present invention.
Fig. 2 is a schematic diagram for explaining the return ejector of the rubber injection mold according to the embodiment of the present invention.
Fig. 3 is a schematic view showing a state of the air guide ejector mechanism when the rubber injection mold according to the embodiment of the present invention is closed.
Fig. 4 is a schematic view showing a state of the air guide ejector mechanism when the rubber injection mold according to the embodiment of the present invention is released from the mold.
Fig. 5 is a schematic diagram for illustrating the formation position and structure of the air guide groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
Fig. 1 is a sectional view showing the structure of a rubber injection mold 1 according to the present embodiment. As shown in fig. 1, the rubber injection mold 1 includes an upper mold base 10, a lower mold base 12, an upper mold core 11 fixed to the upper mold base 10 by bolts, and a lower mold core 13 fixed to the lower mold base 12 by bolts. When the dies are closed, the upper die core 11 and the lower die core 13 jointly enclose a die cavity 14.
When the upper mold base 10 and the lower mold base 12 are closed, the cavities of the upper mold core 11 and the lower mold core 13 together enclose the mold cavity 14, the injection molding machine injects the hot-melt injection molding material (rubber) into the mold cavity, after the injection molding material is cooled and molded, the upper mold base 10 and the upper mold core 11 move upward together, and are separated from the lower mold base 12 and the lower mold core 13, and demolding is performed.
The rubber part injection mold 1 further comprises an air guide ejection mechanism 20 and a lower mold ejection mechanism 30.
The air guide ejection mechanism 20 includes: a top plate guide post 21; a jack ejector plate 23 connected to the top plate guide post 21 so as to be orthogonal to the axial direction of the top plate guide post 21, the jack ejector plate 23 being slidable in the axial direction of the top plate guide post 21; an ejector spring 22, the ejector spring 22 is sleeved outside the top plate guide post 21 and used for pushing the ejector rod ejector plate 23 to the opposite side of the top plate guide post 21; a top bar fixing plate 24, wherein the top bar fixing plate 24 is fixed on one surface of the top bar ejecting plate 23 which is not connected with the top plate guide post 21; and a plurality of lift pins 25, one end of each of the plurality of lift pins 25 is fixed to the lift pin fixing plate 24 and extends downward, and air guide grooves 26 are formed in the side surfaces of the plurality of lift pins 25.
As shown in fig. 2, the air guide ejection mechanism 20 further includes a return ejector pin 27, and the return ejector pin 27 is fixed to the ejector pin fixing plate 24 and extends downward, and when mold clamping is performed, the return ejector pin 27 abuts against the mold clamping surface of the lower mold core 13, thereby positioning the plurality of ejector pins 25.
The side of the upper core 11 facing the upper die base 10 has a cavity, and the top plate guide post 21 of the air guide ejector mechanism 20 is fixed to the upper die base 10 such that the ejector pin ejecting plate 23 and the ejector pin fixing plate 24 are located in the cavity and formed to be slidable in the longitudinal direction in the cavity. A plurality of carrier rods 25 are inserted vertically downward into the upper mold core 11. The plurality of ejector pins 25 are formed in different sizes and lengths according to the shape of the mold cavity (the shape of the molded rubber). The other end of the plurality of lift pins 25 has a profile design of a molded rubber.
The lower mold ejection mechanism 30 includes: a plurality of lower mold ejector rods 35, the lower mold ejector rods 35 being inserted into the lower mold core 13 from bottom to top and extending to the inner cavity wall of the lower mold core 13; a lower die ejector rod fixing plate 31, a plurality of lower die ejector rods 35 fixed to the lower die ejector rod fixing plate 31; a lower die ejector plate 32, the lower die ejector plate 32 being fixed to the other surface of the lower die ejector fixing plate 31; and an ejector rod 33, the ejector rod 33 being provided on the base 16 of the rubber injection mold 1, for ejecting the lower mold ejector pin ejector plate 32 from the mold cavity side.
The die leg 15 supports the lower die base 12, and the lower die ejection mechanism 30 is provided in a space formed by the support of the die leg 15.
Next, the state of the air guide ejector mechanism 10 at the time of mold clamping and mold release will be described with reference to fig. 3 and 4.
The molded rubber member of this embodiment is a rubber sleeve wrapped outside the cable, and the rubber sleeve has a plurality of holes, and the outer surface of the cable is not wrapped with rubber at these holes, that is, the mold cavity 14 of this embodiment has a region where rubber injection molding is not needed. During mold closing, the plurality of ejector pins 25 are inserted into the upper core, the other end of the molded rubber piece having the profile design is located on the inner cavity wall of the mold cavity 14, and part of the ejector pins 25 are located in the region of the mold cavity 14 where rubber injection is not required.
As shown in fig. 5, the air guide groove 26 of the present embodiment is formed in a rectangular shape, and the long side of the rectangular shape is parallel to the extending direction of the jack. The portion of the gas guide groove 26 communicates with the outside air so that the outside air can be supplied to the mold cavity 14 at the time of mold release. The long side of the air guide groove 26 extends to a position 0.7mm to 0.8mm from the inner cavity wall of the upper core 11. When the mold is closed, the wall surface of the mold cavity 14 and the rubber member are in a vacuum state.
Further, a plurality of lower mold pins 35 are inserted into the lower mold core, which extend to the inner cavity wall of the lower mold core 13, and part of the lower mold pins 35 are located in the region of the mold cavity 14 where rubber injection is not required.
In the demolding, the lower mold pin ejector plate 32 is pushed out by the ejector rod 33 toward the mold cavity 14, so that the plurality of lower mold pins 35 eject the rubber member upward, and at the same time, the upper mold base plate 10 rises upward together with the upper mold core 11, so that the rubber member rises upward following the upper mold core 11 and is separated from the lower mold core 13.
In the clamped state, the ejector spring 22 is compressed, and applies a downward force to the ejector pin plate 23. Therefore, when the upper mold base plate 10 rises upward together with the upper mold core 11 and leaves the lower mold base plate 12 and the lower mold core 13, and the ejector pin ejector plate 23 is ejected downward by the ejector spring 22 to about 0.7mm to 0.8mm, as shown in fig. 4, the air guide groove 26 enters the mold cavity 14, and the external air enters the mold cavity 14, so that the vacuum between the upper wall of the mold cavity 14 and the rubber is eliminated, and the rubber smoothly falls off from the upper mold core 11. Because the distance of 0.7-0.8 mm is in the elastic deformation range of the rubber piece, the rubber piece is not permanently deformed, and the surface of the rubber piece cannot generate a pit phenomenon due to the ejection of the ejector rods 25. In addition, most of the lower die ejector pins 35 and the ejector pins 25 are pushed against the region where the rubber is not required to be injected during demolding, so that the surface of the rubber member can be further prevented from being dented.
Through using the utility model discloses a rubber spare injection mold can avoid the rubber spare after the shaping to stay in the mould at the drawing of patterns time lag to utilize the air guide function, avoided producing pit, deformation etc. on the rubber spare ejecting.
In addition, the rubber spare in this embodiment is for wrapping up at the outside rubber sleeve of cable, nevertheless not be limited to this, the utility model discloses a rubber spare injection mould can be applied to the injection moulding of various rubber spares.
The air guide groove of the present embodiment is formed in a rectangular shape, but the shape thereof is not limited thereto.
Although the present invention has been described with reference to the present specific embodiments, it will be appreciated by those skilled in the art that the scope of the invention herein involved is not limited to the specific combination of the above features, but also encompasses other embodiments formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (8)
1. The utility model provides an air guide ejection mechanism, this air guide ejection mechanism is used for rubber spare injection mold, its characterized in that includes:
a top plate guide post;
a roof ejector plate that is connected to the roof guide post so as to be orthogonal to the axial direction of the roof guide post, and that is slidable in the axial direction of the roof guide post;
the ejection spring is sleeved outside the top plate guide post and used for pushing the ejector rod ejection plate to the opposite side of the top plate guide post;
the ejector rod fixing plate is fixed on one surface of the ejector rod ejector plate, which is not connected with the top plate guide pillar;
one end part of each ejector rod is fixed on the ejector rod fixing plate and extends downwards along the axial direction of the top plate guide post, and the side surfaces of the ejector rods are provided with air guide grooves; and
and the return ejector rod is fixed on the ejector rod fixing plate, extends downwards and limits the plurality of ejector rods.
2. The air guide ejection mechanism of claim 1,
and part of the gas guide groove is communicated with external gas, and one end of the gas guide groove extends to the vicinity of the other end part of the ejector rod.
3. The air guide ejection mechanism of claim 1 or 2,
the plurality of ejector pins have different sizes and lengths according to the shape of a cavity of the injection mold.
4. The air guide ejection mechanism of claim 1 or 2,
the other end of the plurality of ejector rods has a profile design of a molded rubber member.
5. A rubber member injection mold comprising the air guide ejection mechanism of any one of claims 1 to 4,
further comprising: an upper die base, an upper die core fixed on the upper die base, a lower die core fixed on the lower die base, and a die cavity formed by the upper die core and the lower die core,
the upper mold core is provided with a cavity for accommodating the air guide ejection mechanism, the air guide ejection mechanism is positioned in the cavity and is used for ejecting a formed rubber piece,
the top plate guide post of the air guide ejection mechanism is fixed on the upper die base, the ejector rod ejection plate can slide in the cavity along the longitudinal direction,
a plurality of ejector rods of the air guide ejection mechanism are longitudinally inserted into the upper mold core and extend to the inner cavity wall of the upper mold core,
and the return ejector rod of the air guide ejection mechanism is abutted against the die joint surface of the lower die core when the upper die core and the lower die core are attached.
6. The rubber member injection mold of claim 5,
one end of the air guide groove of the air guide ejection mechanism is 0.7 mm-0.8 mm away from the inner cavity wall of the upper mold core.
7. The rubber member injection mold according to claim 5 or 6,
the mold cavity has an area where injection of rubber is not required,
and part of the ejector rods are positioned at the positions corresponding to the areas without the rubber injection molding, so that when demoulding, part of the ejector rods are ejected to the areas without the rubber injection molding.
8. The rubber member injection mold of claim 7,
also comprises a lower die ejection mechanism which is used for ejecting the formed rubber piece from the lower die,
the lower die ejection mechanism comprises a plurality of lower die ejector rods, a lower die ejector rod fixing plate, a lower die ejector rod ejection plate and an ejection rod,
the lower mold ejector rods are inserted into the lower mold core from bottom to top and extend to the inner cavity wall of the lower mold core, the lower mold ejector rods are fixed on the lower mold ejector rod fixing plate, the other surface of the lower mold ejector rod fixing plate is fixed with the lower mold ejector rod ejector plate, the ejector rod is used for pushing the lower mold ejector rod ejector plate to one side of the mold cavity,
and part of the lower die ejector rods are positioned at the positions corresponding to the areas without the rubber for injection molding, so that when the die is demolded, part of the lower die ejector rods are ejected to the areas without the rubber for injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492348.8U CN212653817U (en) | 2019-12-31 | 2019-12-31 | Air guide ejection mechanism and rubber part injection mold with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492348.8U CN212653817U (en) | 2019-12-31 | 2019-12-31 | Air guide ejection mechanism and rubber part injection mold with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212653817U true CN212653817U (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922492348.8U Active CN212653817U (en) | 2019-12-31 | 2019-12-31 | Air guide ejection mechanism and rubber part injection mold with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212653817U (en) |
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2019
- 2019-12-31 CN CN201922492348.8U patent/CN212653817U/en active Active
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