CN209832491U - Injection mold with vacuum-pumping cavity - Google Patents
Injection mold with vacuum-pumping cavity Download PDFInfo
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- CN209832491U CN209832491U CN201920269618.6U CN201920269618U CN209832491U CN 209832491 U CN209832491 U CN 209832491U CN 201920269618 U CN201920269618 U CN 201920269618U CN 209832491 U CN209832491 U CN 209832491U
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Abstract
The utility model discloses an injection mold of die cavity evacuation relates to injection mold technical field, the utility model discloses from last to including an upper fixed plate, a cover half, the movable mould, a supporting plate, cushion and bottom plate down in proper order, be provided with the die cavity on the cover half, be provided with the ejecting mechanism who releases plastic products in the cushion, be provided with the air exhaust mechanism who takes out the gas in the die cavity on the cover half, the cover half side is provided with the air exhaust piston hole, be provided with the air exhaust passageway in the air exhaust piston hole, the air exhaust passageway is put through with the die cavity on the cover half, the air exhaust mechanism includes the piston that matches with the air exhaust piston hole, the pneumatic cylinder of drive piston come and; the utility model discloses a motion of piston gets into the piston hole of bleeding through the air exhaust passage with the air of die cavity in to make the inside negative pressure or the vacuum state that is in of die cavity, make melt plastics more quick fill up to whole die cavity inside, reduced the incidence that the product lacked glue.
Description
Technical Field
The utility model relates to an injection mold technical field, more specifically relate to an injection mold of die cavity evacuation.
Background
The plastic molding process refers to a process for manufacturing a semi-finished product with a certain shape by pressurizing, injecting, cooling, separating and the like the molten raw materials.
The injection molding process of the plastic part mainly comprises 6 stages of mold closing, filling, air assistance and water assistance, pressure maintaining, cooling, mold opening, mold stripping and the like.
Filling is the first step in the overall injection cycle, from the time the mold is closed to start injection until the mold cavity is approximately 95% filled. Theoretically, the shorter the filling time, the higher the molding efficiency; however, in actual production, the molding time (or injection molding speed) is limited by many conditions.
And (4) high-speed filling. The shear rate is high during high-speed filling, and the viscosity of the plastic is reduced due to the shear thinning effect, so that the overall flow resistance is reduced; localized viscous heating effects also thin the thickness of the cured layer. Thus, in the flow control phase, the filling behavior tends to depend on the volume size to be filled. That is, during the flow control phase, the shear-thinning effect of the melt tends to be large due to the high-speed filling, while the cooling effect of the thin wall is not significant, so that the effect of the velocity dominates the upwind.
And (4) filling at a low speed. When the heat conduction controls low-speed filling, the shear rate is low, the local viscosity is high, and the flow resistance is high. Because the hot plastic is supplemented at a slow speed and flows slowly, the heat conduction effect is obvious, and the heat is rapidly taken away by the cold die wall. With a smaller amount of viscous heating, the solidified layer is thicker, which further increases the flow resistance where the wall is thinner.
Due to the fountain flow, the plastic polymer chains in front of the flow wave are aligned to the almost parallel flow front. Therefore, when the two plastic melt adhesives are intersected, the polymer chains of the contact surfaces are parallel to each other; in addition, the two strands of molten glue have different properties (different residence time in a die cavity, different temperature and pressure), so that the structural strength of a molten glue intersection area on a micro scale is poor. When the parts are placed at a proper angle under light and observed by naked eyes, the generation of obvious bonding lines can be found, and the mechanism is the formation mechanism of the welding marks. The weld marks not only affect the appearance of the plastic part, but also loose microstructure and easy to cause stress concentration, so that the strength of the part is reduced and the part is broken.
Generally, the weld mark strength at which welding occurs in a high temperature region is better. Because the mobility of the polymer chains is relatively good under the high-temperature condition, the polymer chains can penetrate and wind each other, and in addition, the temperatures of two melts in a high-temperature area are relatively close, the thermal properties of the melts are almost the same, and the strength of a welding area is increased; on the contrary, in the low temperature region, the welding strength is poor.
The starved defect of injection molding is that melt plastics do not fill to the die cavity completely, and the outward appearance shows that injection molding outside profile is incomplete, and the prevention fuse-element that injection quantity undersize, penetrate gluey pressure are not enough, exhaust problem lead to flows etc. all are the reason that leads to starving, and the place of keeping away from the mouth of a river leads to starving the defect more easily, and starving direct influence product appearance quality, starving product in case form, can't remedy, can only scrap.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the technical problem that the current fuse-element plastics are not filled the starved phenomenon that leads to completely, the utility model provides a injection mold of die cavity evacuation.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
the utility model provides an injection mold of die cavity evacuation, includes upper fixed plate, cover half, movable mould, backup pad, cushion and bottom plate from last to down in proper order, is provided with the die cavity on the cover half, be provided with the ejecting mechanism who releases plastic products in the cushion, be provided with the air exhaust mechanism who takes the gas in the die cavity out on the cover half, the cover half side is provided with the air exhaust piston hole, be provided with air exhaust passage in the air exhaust piston hole, air exhaust passage switches on with the die cavity on the cover half, air exhaust mechanism includes the pneumatic cylinder of coming the back and forth motion at air exhaust piston hole with piston, the drive piston that air exhaust piston hole matches.
The working principle is as follows: after the fixed die and the movable die are assembled, the piston is pulled to move through the hydraulic cylinder, air in the cavity enters the air exhaust piston hole through the air exhaust channel by utilizing the movement of the piston, so that the inside of the cavity is in a negative pressure or vacuum state, melt plastics are filled into the whole cavity more quickly, and the occurrence rate of glue shortage of products is reduced.
Furthermore, the air exhaust mechanism also comprises a push rod which is fixedly connected with the piston and can push out the foreign matters in the air exhaust channel. Through setting up the push rod, after the cover half separated with the movable mould and taken out off-the-shelf plastic product, let the push rod release remaining glue solution or the glue that has solidified in the pumping channel to this guarantees that pumping channel is not blockked up, and the air of die cavity can also be taken away from pumping channel when the compound die of next time of being convenient for.
Further, the air exhaust channel is a cylindrical hole, the center line of the air exhaust channel coincides with the center line of an air exhaust piston hole, one end of the piston is fixedly connected with a piston rod of the hydraulic cylinder, a connecting block is fixedly arranged at the other end of the piston, the push rod is a shaft capable of being in clearance fit with the air exhaust channel, the axial lead of the push rod coincides with the center line of the piston, one end of the push rod is fixedly connected with the connecting block, and the other end of the push rod is inserted into the air exhaust channel. In order to reduce the processing cost and simplify the structures of the air exhaust mechanism and the push-out mechanism, the piston and the push rod are arranged concentrically, so that the piston can drive the push rod to push out residues in the air exhaust channel concentrically arranged with the air exhaust piston hole when being reset, the structure of the push-out mechanism can be realized by one shaft, and the manufacturing cost of the device is saved.
Furthermore, a contact type button switch is fixedly arranged on the fixed die, and a switch stop block capable of touching the contact type button switch is fixedly arranged on the movable die. Through setting up contact button switch, can let contact button switch control the messenger of pneumatic cylinder, after the cover half and movable mould compound die, contact button switch is triggered, and contact button switch switches on the solenoid valve of the piston rod withdrawal of control pneumatic cylinder.
Furthermore, a guide sleeve is fixedly arranged on the fixed die, a guide hole penetrating through the guide sleeve is formed in the guide sleeve, and a guide column which can be inserted and matched with the guide hole in the guide sleeve is fixedly arranged on the movable die.
Furthermore, a plurality of fixed mold cooling water channels are arranged on the fixed mold, and a plurality of movable mold cooling water channels are arranged on the movable mold.
Further, the ejecting mechanism comprises an ejector plate which is arranged in the cushion block and can slide up and down in the cushion block, and a thimble fixedly arranged at the upper end of the ejector plate, one end of the thimble is fixed with the ejector plate, the other end of the thimble sequentially penetrates through the supporting plate and the movable die, the thimble can slide up and down in the supporting plate and the movable die, a reset spring is sleeved on the thimble, one end of the reset spring is in contact with the lower end of the supporting plate, and the other end of the reset spring is in contact with the upper end of the ejector plate.
Furthermore, a sprue bush is vertically arranged in the fixed die, the lower end of the sprue bush is communicated with a cavity in the fixed die, and the upper end of the sprue bush penetrates through the upper fixing plate.
The utility model has the advantages as follows:
1. after the fixed die and the movable die are assembled, the piston is pulled to move through the hydraulic cylinder, air in the cavity enters the air exhaust piston hole through the air exhaust channel by utilizing the movement of the piston, so that the inside of the cavity is in a negative pressure or vacuum state, melt plastics are filled into the whole cavity more quickly, and the occurrence rate of glue shortage of products is reduced.
2. Through setting up the push rod, after the cover half separated with the movable mould and taken out off-the-shelf plastic product, let the push rod release remaining glue solution or the glue that has solidified in the pumping channel to this guarantees that pumping channel is not blockked up, and the air of die cavity can also be taken away from pumping channel when the compound die of next time of being convenient for.
3. In order to reduce the processing cost and simplify the structures of the air exhaust mechanism and the push-out mechanism, the piston and the push rod are arranged concentrically, so that the piston can drive the push rod to push out residues in the air exhaust channel concentrically arranged with the air exhaust piston hole when being reset, the structure of the push-out mechanism can be realized by one shaft, and the manufacturing cost of the device is saved.
4. Through setting up contact button switch, can let contact button switch control the messenger of pneumatic cylinder, after the cover half and movable mould compound die, contact button switch is triggered, and contact button switch switches on the solenoid valve of the piston rod withdrawal of control pneumatic cylinder.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the operation of the present invention;
FIG. 3 is a schematic structural diagram of the stationary mold in FIG. 1;
figure 4 is a schematic view of the assembly of the suction mechanism of figure 1.
Reference numerals: 1. the automatic casting machine comprises a lower fixing plate, 2. cushion blocks, 3. a supporting plate, 4. a movable mold, 5. a fixed mold, 5-1. an air exhaust channel, 5-2. an air exhaust piston hole, 6. an upper fixing plate, 7. a sprue bush, 8. an air exhaust mechanism, 8-1. a hydraulic cylinder, 8-2. a piston, 8-3. a connecting block, 8-4. a push rod, 9. a contact type button switch, 10. a switch stop block, 11. a guide sleeve, 12. a fixed mold cooling water channel, 13. a guide column, 14. a movable mold cooling water channel, 15. an ejector plate, 16. an ejector pin and 17. a reset spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1 to 4, this embodiment provides an injection mold with a vacuumized cavity, which sequentially includes an upper fixing plate 6, a fixed mold 5, a movable mold 4, a supporting plate 3, a cushion block 2 and a lower fixing plate 1 from top to bottom, wherein the fixed mold 5 is provided with the cavity, the cushion block 2 is internally provided with a push-out mechanism for pushing out a plastic product, the fixed mold 5 is provided with an air pumping mechanism 8 for pumping air in the cavity, the side surface of the fixed mold 5 is provided with an air pumping piston hole 5-2, an air pumping channel 5-1 is arranged in the air pumping piston hole 5-2, the air pumping channel 5-1 is communicated with the cavity on the fixed mold 5, the air pumping mechanism 8 includes a piston 8-2 matched with the air pumping piston hole 5-2 and a hydraulic cylinder 8-1 for driving the piston 8-2 to move back and, the hydraulic cylinder 8-1 is fixedly connected with the fixed die 5, a piston rod of the hydraulic cylinder 8-1 is inserted into the air extraction piston hole 5-2 and then is fixed with the piston 8-2 in the air extraction piston hole 5-2 through a screw, one end of the piston 8-2 is provided with a screw hole penetrating through the piston 8-2, the end surface of the piston rod of the hydraulic cylinder 8-1 is provided with a screw hole matched with the screw hole at one end of the piston 8-2, the piston 8-2 is connected with the piston rod of the hydraulic cylinder 8-1 through a screw, two air extraction channels 5-1 and two air extraction piston holes 5-2 can be arranged, each air extraction channel 5-1 and the air extraction piston hole 5-2 form a group, each group of air extraction channels 5-1 and the air extraction piston holes 5-2 corresponds to one air extraction mechanism 8, and two groups of air extraction, the air in the cavity is also easier to be pumped out.
After the fixed die 5 and the movable die 4 are assembled, the piston 8-2 is pulled to move through the hydraulic cylinder 8-1, and air in the cavity enters the air exhaust piston hole 5-2 through the air exhaust channel 5-1 by utilizing the movement of the piston 8-2, so that the interior of the cavity is in a negative pressure or vacuum state, melt plastics are filled into the whole cavity more quickly, and the occurrence rate of glue shortage of products is reduced.
Example 2
As shown in fig. 1 to 4, this embodiment provides an injection mold with a vacuumized cavity, which sequentially includes an upper fixing plate 6, a fixed mold 5, a movable mold 4, a supporting plate 3, a cushion block 2 and a lower fixing plate 1 from top to bottom, wherein the fixed mold 5 is provided with the cavity, the cushion block 2 is internally provided with a push-out mechanism for pushing out a plastic product, the fixed mold 5 is provided with an air pumping mechanism 8 for pumping air in the cavity, the side surface of the fixed mold 5 is provided with an air pumping piston hole 5-2, an air pumping channel 5-1 is arranged in the air pumping piston hole 5-2, the air pumping channel 5-1 is communicated with the cavity on the fixed mold 5, the air pumping mechanism 8 includes a piston 8-2 matched with the air pumping piston hole 5-2 and a hydraulic cylinder 8-1 for driving the piston 8-2 to move back and, the hydraulic cylinder 8-1 is fixedly connected with the fixed die 5, a piston rod of the hydraulic cylinder 8-1 is inserted into the air extraction piston hole 5-2 and then is fixed with the piston 8-2 in the air extraction piston hole 5-2 through a screw, one end of the piston 8-2 is provided with a screw hole penetrating through the piston 8-2, the end surface of the piston rod of the hydraulic cylinder 8-1 is provided with a screw hole matched with the screw hole at one end of the piston 8-2, the piston 8-2 is connected with the piston rod of the hydraulic cylinder 8-1 through a screw, two air extraction channels 5-1 and two air extraction piston holes 5-2 can be arranged, each air extraction channel 5-1 and the air extraction piston hole 5-2 form a group, each group of air extraction channels 5-1 and the air extraction piston holes 5-2 corresponds to one air extraction mechanism 8, and two groups of air extraction, the air in the cavity is also easier to be pumped out.
The air exhaust mechanism 8 also comprises a push rod 8-4 which is fixedly connected with the piston 8-2 and can push out foreign matters in the air exhaust channel 5-1. Through the arrangement of the push rod 8-4, after the fixed die 5 and the movable die 4 are separated and finished plastic products are taken out, the push rod 8-4 pushes out residual glue liquid or solidified glue liquid in the air exhaust channel 5-1, so that the air exhaust channel 5-1 is not blocked, and air in a cavity can be pumped away from the air exhaust channel 5-1 when the die is closed next time.
The air extraction channel 5-1 is a cylindrical hole, the center line of the air extraction channel 5-1 is overlapped with the center line of an air extraction piston hole 5-2, one end of a piston 8-2 is fixedly connected with a piston rod of a hydraulic cylinder 8-1, the other end of the piston 8-2 is fixedly provided with a connecting block 8-3, a push rod 8-4 is a shaft which can be in clearance fit with the air extraction channel 5-1, the shaft axis of the push rod 8-4 is overlapped with the center line of the piston 8-2, one end of the push rod 8-4 is fixedly connected with the connecting block 8-3, the other end of the push rod 8-4 is inserted into the air extraction channel 5-1, and the sum of the length of the push rod 8-4 and the height of the piston 8-2 is equal to the sum of the depths of the. In order to reduce the processing cost and simplify the structures of the air exhaust mechanism 8 and the push-out mechanism, the piston 8-2 and the push rod 8-4 are concentrically arranged, so that the piston 8-2 can drive the push rod 8-4 to push out residues in the air exhaust channel 5-1 concentrically arranged with the air exhaust piston hole 5-2 when resetting, the structure of the push-out mechanism can be realized by one shaft, and the manufacturing cost of the device is saved.
The fixed mold 5 is also fixedly provided with a contact type button switch 9, and the movable mold 4 is fixedly provided with a switch stop block 10 which can touch the contact type button switch 9. By arranging the contact type button switch 9, the contact type button switch 9 can control the hydraulic cylinder 8-1 to move, after the fixed die 5 and the movable die 4 are assembled, the contact type button switch 9 is triggered, and the contact type button switch 9 is switched on an electromagnetic valve for controlling the piston rod of the hydraulic cylinder 8-1 to retract.
Example 3
As shown in fig. 1 to 4, this embodiment provides an injection mold with a vacuumized cavity, which sequentially includes an upper fixing plate 6, a fixed mold 5, a movable mold 4, a supporting plate 3, a cushion block 2 and a lower fixing plate 1 from top to bottom, wherein the fixed mold 5 is provided with the cavity, the cushion block 2 is internally provided with a push-out mechanism for pushing out a plastic product, the fixed mold 5 is provided with an air pumping mechanism 8 for pumping air in the cavity, the side surface of the fixed mold 5 is provided with an air pumping piston hole 5-2, an air pumping channel 5-1 is arranged in the air pumping piston hole 5-2, the air pumping channel 5-1 is communicated with the cavity on the fixed mold 5, the air pumping mechanism 8 includes a piston 8-2 matched with the air pumping piston hole 5-2 and a hydraulic cylinder 8-1 for driving the piston 8-2 to move back and, the hydraulic cylinder 8-1 is fixedly connected with the fixed die 5, a piston rod of the hydraulic cylinder 8-1 is inserted into the air extraction piston hole 5-2 and then is fixed with the piston 8-2 in the air extraction piston hole 5-2 through a screw, one end of the piston 8-2 is provided with a screw hole penetrating through the piston 8-2, the end surface of the piston rod of the hydraulic cylinder 8-1 is provided with a screw hole matched with the screw hole at one end of the piston 8-2, the piston 8-2 is connected with the piston rod of the hydraulic cylinder 8-1 through a screw, two air extraction channels 5-1 and two air extraction piston holes 5-2 can be arranged, each air extraction channel 5-1 and the air extraction piston hole 5-2 form a group, each group of air extraction channels 5-1 and the air extraction piston holes 5-2 corresponds to one air extraction mechanism 8, and two groups of air extraction, the air in the cavity is also easier to be pumped out.
The fixed die 5 is fixedly provided with a guide sleeve 11, the guide sleeve 11 is provided with a guide hole penetrating through the guide sleeve 11, and the movable die 4 is fixedly provided with a guide column 13 which can be penetrated and matched with the guide hole in the guide sleeve 11.
The fixed die 5 is provided with a plurality of fixed die cooling water channels 12, and the movable die 4 is provided with a plurality of movable die cooling water channels 14.
The ejecting mechanism comprises an ejector plate 15 which is arranged in the cushion block 2 and can slide up and down in the cushion block 2, a thimble 16 fixedly arranged at the upper end of the ejector plate 15, one end of the thimble 16 is fixed with the ejector plate 15, the other end of the thimble 16 sequentially penetrates through the support plate 3 and the movable die 4, the thimble 16 can slide up and down in the support plate 3 and the movable die 4, a reset spring 17 is sleeved on the thimble 16, one end of the reset spring 17 is in contact with the lower end of the support plate 3, and the other end of the reset spring 17 is in contact with the upper end of the ejector plate 15.
Further, a sprue bush 7 is vertically arranged in the fixed die 5, the lower end of the sprue bush 7 is communicated with a cavity in the fixed die 5, and the upper end of the sprue bush 7 penetrates through the upper fixing plate 6.
Claims (8)
1. An injection mold with a vacuum-pumping cavity comprises an upper fixing plate (6), a fixed mold (5), a movable mold (4), a supporting plate (3), a cushion block (2) and a lower fixing plate (1) from top to bottom in sequence, wherein the fixed mold (5) is provided with the cavity, and a push-out mechanism for pushing out a plastic product is arranged in the cushion block (2); the method is characterized in that: the improved die is characterized in that an air exhaust mechanism (8) for exhausting air in the cavity is arranged on the fixed die (5), an air exhaust piston hole (5-2) is formed in the side face of the fixed die (5), an air exhaust channel (5-1) is arranged in the air exhaust piston hole (5-2), the air exhaust channel (5-1) is communicated with the cavity in the fixed die (5), and the air exhaust mechanism (8) comprises a piston (8-2) matched with the air exhaust piston hole (5-2) and a hydraulic cylinder (8-1) of a driving piston (8-2) moving back and forth in the air exhaust piston hole (5-2).
2. The evacuated cavity injection mold of claim 1, wherein: the air exhaust mechanism (8) also comprises a push rod (8-4) which is fixedly connected with the piston (8-2) and can push out foreign matters in the air exhaust channel (5-1).
3. The evacuated cavity injection mold of claim 2, wherein: the air exhaust passage (5-1) is a cylindrical hole, the center line of the air exhaust passage (5-1) coincides with the center line of an air exhaust piston hole (5-2), one end of a piston (8-2) is fixedly connected with a piston rod of a hydraulic cylinder (8-1), the other end of the piston (8-2) is fixedly provided with a connecting block (8-3), a push rod (8-4) is a shaft which can be in clearance fit with the air exhaust passage (5-1), the axial line of the push rod (8-4) coincides with the center line of the piston (8-2), one end of the push rod (8-4) is fixedly connected with the connecting block (8-3), and the other end of the push rod (8-4) is inserted into the air exhaust passage (5-1).
4. The evacuated cavity injection mold of claim 1, wherein: the fixed die (5) is also fixedly provided with a contact type button switch (9), and the movable die (4) is fixedly provided with a switch stop block (10) which can trigger the contact type button switch (9).
5. The evacuated cavity injection mold of claim 1, wherein: the fixed die (5) is fixedly provided with a guide sleeve (11), the guide sleeve (11) is provided with a guide hole penetrating through the guide sleeve (11), and the movable die (4) is fixedly provided with a guide post (13) which can be inserted and matched with the guide hole in the guide sleeve (11).
6. The evacuated cavity injection mold of claim 1, wherein: a plurality of fixed mold cooling water channels (12) are arranged on the fixed mold (5), and a plurality of movable mold cooling water channels (14) are arranged on the movable mold (4).
7. The evacuated cavity injection mold of claim 1, wherein: ejecting mechanism can be including setting up ejector plate (15) that slide from top to bottom in cushion (2) inscribe, fix and establish thimble (16) on ejector plate (15), the one end and ejector plate (15) of thimble (16) are fixed, the other end of thimble (16) runs through backup pad (3) and movable mould (4) in proper order, thimble (16) can be in backup pad (3) and movable mould (4) the top-to-bottom slip, the cover is equipped with reset spring (17) on thimble (16), the one end of reset spring (17) and the lower extreme contact of backup pad (3), the other end of reset spring (17) and the upper end contact of ejector plate (15).
8. The evacuated cavity injection mold of claim 1, wherein: a sprue bush (7) is vertically arranged in the fixed die (5), the lower end of the sprue bush (7) is communicated with a cavity in the fixed die (5), and an upper fixing plate (6) is penetrated through the upper end of the sprue bush (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920269618.6U CN209832491U (en) | 2019-03-04 | 2019-03-04 | Injection mold with vacuum-pumping cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920269618.6U CN209832491U (en) | 2019-03-04 | 2019-03-04 | Injection mold with vacuum-pumping cavity |
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| CN209832491U true CN209832491U (en) | 2019-12-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111688131A (en) * | 2020-06-11 | 2020-09-22 | 湖南德森机电科技有限公司 | Manufacturing device for micro-electromechanical device substrate structure |
| CN112790722A (en) * | 2021-02-08 | 2021-05-14 | 大连海龙骨科器械有限公司 | Lens cap for endoscope protective sleeve and preparation method |
| CN116945493A (en) * | 2023-07-24 | 2023-10-27 | 太仓意欣智能科技有限公司 | Injection mold for production of household appliance display panel |
-
2019
- 2019-03-04 CN CN201920269618.6U patent/CN209832491U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111688131A (en) * | 2020-06-11 | 2020-09-22 | 湖南德森机电科技有限公司 | Manufacturing device for micro-electromechanical device substrate structure |
| CN112790722A (en) * | 2021-02-08 | 2021-05-14 | 大连海龙骨科器械有限公司 | Lens cap for endoscope protective sleeve and preparation method |
| CN116945493A (en) * | 2023-07-24 | 2023-10-27 | 太仓意欣智能科技有限公司 | Injection mold for production of household appliance display panel |
| CN116945493B (en) * | 2023-07-24 | 2024-05-07 | 太仓意欣智能科技有限公司 | Injection mold for production of household appliance display panel |
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