CN213006288U - Water-assisted molding injection mold - Google Patents
Water-assisted molding injection mold Download PDFInfo
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- CN213006288U CN213006288U CN202021596255.6U CN202021596255U CN213006288U CN 213006288 U CN213006288 U CN 213006288U CN 202021596255 U CN202021596255 U CN 202021596255U CN 213006288 U CN213006288 U CN 213006288U
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Abstract
A water-assist molded injection mold, comprising: upper die base (1), die holder (2), ejection mechanism (3), melt injection mechanism (4), fluid injection mechanism (5) and mechanism (6) of loosing core, upper die base (1) and die holder (2) joint, the die cavity has between upper die base (1) and die holder (2), ejection mechanism (3) extend to the die cavity from die holder (2), melt injection mechanism (4), during the die cavity was all inserted in fluid injection mechanism (5) and the mechanism (6) of loosing core, fluid injection mechanism (5) include: and the heat dissipation metal ring (55), wherein the heat dissipation metal ring (55) surrounds the outer wall of the filling pipe (54). Above-mentioned injection mold not only can solve the shrink problem among the plastic part cooling process, can avoid the fluid to cause the influence to cooling efficiency moreover, realizes the quick cooling of plastic part, improves the shaping efficiency of plastic part.
Description
Technical Field
The utility model relates to an injection mold especially relates to a fashioned injection mold is assisted to water.
Background
The water-assisted molding technique involves first injecting a polymer solution into the mold cavity and then introducing a fluid into the solution that flows in a direction of least resistance to the low and high pressure regions of the part. When fluid flows in the plastic part, the thick-wall section is hollowed by replacing materials to form a hollow plastic part, the replaced materials fill the plastic part and the plastic part, and after the filling process is finished, the fluid continuously provides pressure maintaining pressure to solve the problem of shrinkage of the plastic part in the cooling process.
When the filling is completed, the temperature of the fluid may be consistent with the temperature of the solution, however, during the cooling and forming of the solution, since the fluid needs to continuously provide the holding pressure, and the specific heat capacity of the fluid is usually greater than that of the solution, the cooling time may be prolonged, and the forming efficiency of the plastic part may be reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses technical scheme is to above-mentioned condition, provides a water-assisted fashioned injection mold for solving above-mentioned problem, injection mold includes: the injection mold comprises an upper mold base, a lower mold base, an ejection mechanism, a solution injection mechanism, a fluid injection mechanism and a core pulling mechanism, wherein the upper mold base is connected with the lower mold base, a cavity is formed between the upper mold base and the lower mold base, the ejection mechanism extends into the cavity from the lower mold base, and the solution injection mechanism, the fluid injection mechanism and the core pulling mechanism are all inserted into the cavity; the fluid injection mechanism includes: the filling positioning seat is fixed on the side face of the lower die seat, the filling sliding block is movably arranged on the filling positioning seat along the horizontal direction, and a piston rod of the filling cylinder, the filling sliding block and the filling pipe are sequentially fixed; the fluid injection mechanism further comprises: and the heat dissipation metal ring is encircled on the outer wall of the filling pipe.
Further, the fluid injection mechanism further comprises: the rubber ring is positioned between the filling sliding block and the filling pipe.
Further, the upper die base includes: the upper die comprises an upper base plate and an upper pressing plate, wherein the upper pressing plate and the upper base plate are sequentially fixed from top to bottom, and the lower surface of the upper pressing plate is provided with an upper cavity groove, an upper melt injection groove, an upper fluid injection groove and an upper core-pulling channel; the lower die holder comprises: the lower base plate, the support and the lower pressing plate are sequentially fixed from bottom to top, the ejection mechanism extends into the cavity from the support, and the upper surface of the lower pressing plate is provided with a lower cavity groove, a lower melt injection groove, a lower fluid injection groove and a lower core-pulling channel; the upper cavity groove and the lower cavity groove form the cavity, the upper melt injection groove and the lower melt injection groove form a melt injection channel, the upper fluid injection groove and the lower fluid injection groove form a fluid injection channel, the melt injection mechanism penetrates through the melt injection channel and is inserted into the cavity, the fluid injection mechanism penetrates through the fluid injection channel and is inserted into the cavity, and the core pulling mechanism penetrates through the upper core pulling channel and the lower core pulling channel and is inserted into the cavity.
Furthermore, the lower surface of the upper pressing plate is also provided with a positioning cylinder, the positioning cylinder is recessed from the lower surface of the upper pressing plate, the upper surface of the lower pressing plate is also provided with a positioning column, the positioning column protrudes from the upper surface of the lower pressing plate, and the positioning column is inserted into the positioning cylinder.
Further, the ejection mechanism includes: the ejection plate comprises an ejection plate body, a plurality of ejection columns and a plurality of ejector pins, wherein the ejection columns and the ejector pins are protruded from the upper surface of the ejection plate body, the ejection columns are movably arranged in the support along the vertical direction, the ejection columns penetrate through the lower pressing plate, and the ejector pins are inserted into the cavity.
Further, the bracket has a guide rod therein, the guide rod extends in the up-down direction, and the guide rod passes through the knock-out plate.
Further, the melt injection mechanism includes: the injection molding device comprises an injection molding positioning seat, an injection molding cylinder, an injection molding sliding block and an injection molding pipe, wherein the injection molding positioning seat is fixed on the side face of a lower die seat, the injection molding sliding block is movably arranged on the injection molding positioning seat along the horizontal direction, a piston rod of the injection molding cylinder, the injection molding sliding block and the injection molding pipe are sequentially fixed, and the injection molding pipe is inserted into a cavity.
Further, the mechanism of loosing core includes: the core pulling positioning seat is fixed on the side face of the lower die seat, the core pulling sliding block is movably arranged in the core pulling positioning seat along the vertical direction, a piston rod of the core pulling cylinder and the core pulling sliding block are fixed, the side face of the core pulling sliding block is provided with a chute, the outer end of the locking rod is inserted into the chute, the middle of the locking rod penetrates through the locking plate, and the inner end of the locking rod is inserted into the die cavity.
After the technical scheme is adopted, the utility model discloses an effect is: the injection mold with the structure can solve the problem of shrinkage of the plastic part in the cooling process, can avoid the influence of fluid on the cooling efficiency, realizes quick cooling of the plastic part and improves the forming efficiency of the plastic part.
Drawings
Fig. 1 is a schematic view of an injection mold according to the present invention;
fig. 2 is a schematic view of an upper die base according to the present invention;
FIG. 3 is a schematic view of a lower die holder according to the present invention;
fig. 4 is a schematic view of an ejection mechanism according to the present invention;
FIG. 5 is a schematic view of a solution injection mechanism according to the present invention;
fig. 6 is a schematic view of a fluid injection mechanism according to the present invention;
fig. 7 is a schematic view of the core-pulling mechanism according to the present invention.
Detailed Description
It is specifically noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.
The technical solution of the present invention is further described below by way of examples:
the utility model provides a fashioned injection mold is assisted to water, as shown in figure 1, injection mold includes: the core-pulling device comprises an upper die base 1, a lower die base 2, an ejection mechanism 3, a melt injection mechanism 4, a fluid injection mechanism 5 and a core-pulling mechanism 6, wherein the upper die base 1 is connected with the lower die base 2, a cavity is formed between the upper die base 1 and the lower die base 2, the ejection mechanism 3 extends into the cavity from the lower die base 2, and the melt injection mechanism 4, the fluid injection mechanism 5 and the core-pulling mechanism 6 are all inserted into the cavity. When the injection mold works, the upper mold base 1 is in butt joint with the lower mold base 2, the cavity is heated through an external heating device, a (plastic) solution is injected into the cavity through a solution injection mechanism 4, then fluid is injected into the middle of the solution through a fluid injection mechanism 5, the solution is enabled to be tightly attached to the inner wall of the cavity until the whole cavity is filled with the fluid, the fluid is utilized for maintaining pressure for a period of time, cooling is carried out simultaneously, the fluid is extracted after the plastic part is molded, a core-pulling mechanism 6 unlocks the plastic part, finally the upper mold base 1 is separated from the lower mold base 2, and the plastic part is taken out.
Specifically, as shown in fig. 2, the upper die base 1 includes: the upper mold comprises an upper substrate 11 and an upper pressing plate 12, wherein the upper pressing plate 12 and the upper substrate 11 are sequentially fixed from top to bottom, and the lower surface of the upper pressing plate 12 is provided with an upper cavity groove 121, an upper melt injection groove 122, an upper fluid injection groove 123 and an upper core-pulling channel 124; as shown in fig. 3, the lower die holder 2 includes: the lower base plate 21, the bracket 22 and the lower pressing plate 23 are sequentially fixed from bottom to top, the ejection mechanism 3 extends from the bracket 22 to the cavity, and the upper surface of the lower pressing plate 23 is provided with a lower cavity groove 231, a lower melt injection groove 232, a lower fluid injection groove 233 and a lower core-pulling channel 234; the upper cavity groove 121 and the lower cavity groove 231 form a cavity, the upper melt injection groove 122 and the lower melt injection groove 232 form a melt injection channel, the upper fluid injection groove 123 and the lower fluid injection groove 233 form a fluid injection channel, the melt injection mechanism 4 penetrates through the melt injection channel and is inserted into the cavity, the fluid injection mechanism 5 penetrates through the fluid injection channel and is inserted into the cavity, and the core pulling mechanism 6 penetrates through the upper core pulling channel 124 and the lower core pulling channel 234 and is inserted into the cavity.
More specifically, the lower surface of the upper press plate 12 further has a positioning cylinder 125, the positioning cylinder 125 being recessed from the lower surface of the upper press plate 12, the upper surface of the lower press plate 23 further has positioning posts 235, the positioning posts 235 being protruded from the upper surface of the lower press plate 23, the positioning posts 235 being inserted into the positioning cylinder 125. The upper die holder 1 and the lower die holder 2 can be more precisely engaged by the positioning posts 235 cooperating with the positioning cylinders 125.
More specifically, as shown in fig. 4, the ejection mechanism 3 includes: an ejector plate 31, a plurality of ejector pins 32, and a plurality of ejector pins 33, the ejector pins 32 and the ejector pins 33 both protruding from the upper surface of the ejector plate 31, the ejector pins 32 being movably provided in the holder 22 in the up-down direction, the ejector pins 32 passing through the lower platen 23, and the ejector pins 33 being inserted into the cavity. After the plastic part is formed, the ejection mechanism 3 is moved upwards, the top column 32 ejects the upper die base 1, and the ejector pin 33 ejects the plastic part out of the die cavity, so that a worker can take out the plastic part conveniently.
More specifically, the bracket 22 has therein a guide rod 221, the guide rod 221 extends in the up-down direction, and the guide rod 221 passes through the knock-out plate 31. The guide rod 221 can push out the moving direction of the plate 31 to prevent the plate from deviating.
Specifically, as shown in fig. 5, the solution injection mechanism 4 includes: the injection molding device comprises an injection molding positioning seat 41, an injection molding cylinder 42, an injection molding sliding block 43 and an injection molding pipe 44, wherein the injection molding positioning seat 41 is fixed on the side surface of the lower die seat 2, the injection molding sliding block 43 is movably arranged on the injection molding positioning seat 41 along the horizontal direction, a piston rod of the injection molding cylinder 42, the injection molding sliding block 43 and the injection molding pipe 44 are fixed in sequence, and the injection molding pipe 44 is inserted into a cavity. The injection pipe 44 is communicated with an external solution injection device, and after the upper die holder 1 is jointed with the lower die holder 2, the injection cylinder 42 controls the injection pipe 44 to be inserted into the cavity to perform solution injection operation. More specifically, the injection tube 44 passes through the melt injection passage and is inserted into the mold cavity.
Specifically, as shown in fig. 6, the fluid injection mechanism 5 includes: the filling device comprises a filling positioning seat 51, a filling air cylinder 52, a filling sliding block 53 and a filling pipe 54, wherein the filling positioning seat 51 is fixed on the side surface of the lower die seat 2, the filling sliding block 53 is movably arranged on the filling positioning seat 51 along the horizontal direction, a piston rod of the filling air cylinder 52, the filling sliding block 53 and the filling pipe 54 are sequentially fixed, and the filling pipe 54 is inserted into a die cavity. The filling tube 54 is connected to an external solution injection device, and when the upper die holder 1 is engaged with the lower die holder 2, the filling cylinder 52 controls the filling tube 54 to be inserted into the cavity to perform a fluid injection operation. More specifically, the fill tube 54 passes through the fluid injection passage and is inserted into the mold cavity.
In the present invention, the fluid injection mechanism 5 further includes: and a heat dissipating metal ring 55, the heat dissipating metal ring 55 surrounding the outer wall of the filling tube 54. The heat dissipation metal ring 55 is connected with an external heat dissipation device, and in the process of cooling and forming the solution, the heat dissipation metal ring 55 can absorb the heat of the fluid, so that the solution and the fluid are rapidly cooled synchronously, and the forming efficiency of the plastic part is improved.
More specifically, the fluid injection mechanism 5 further includes: a rubber ring 56, the rubber ring 56 being located between the filling slide 53 and the filling tube 54. During the fluid input into the fill tube 54, there is a possibility that the fill tube 54 may flutter due to instability of the hydraulic pressure. The rubber ring 56 can play a role in shock resistance, so that the filling pipe 54 is prevented from deviating, the input of fluid is more stable, and the fluid is ensured to fully fill the cavity.
Specifically, as shown in fig. 7, the core-pulling mechanism 6 mechanism includes: the core-pulling mechanism comprises a locking plate 61, a locking rod 62, a core-pulling positioning seat 63, a core-pulling cylinder 64 and a core-pulling slider 65, wherein the core-pulling positioning seat 63 is fixed on the side surface of the lower die holder 2, the core-pulling slider 65 is movably arranged in the core-pulling positioning seat 63 along the up-down direction, a piston rod of the core-pulling cylinder 64 and the core-pulling slider 65 are fixed, a chute 651 is arranged on the side surface of the core-pulling slider 65, the chute 651 is gradually close to the inside of a die cavity from top to bottom, the outer end of the locking rod 62 is inserted into the. In the injection molding process, the core pulling cylinder 64 controls the core pulling slide block 65 to move upwards, the locking rod 62 is matched with the chute 651 and inserted into the cavity to lock the plastic part, after the injection molding is completed, the core pulling cylinder 64 controls the core pulling cylinder 64 to move downwards, the locking rod 62 is matched with the chute 651 and withdraws from the cavity to unlock the plastic part, and therefore the core pulling operation is completed.
More specifically, the two locking rods 62 pass through the core-up channel 124 and the core-down channel 234 and are inserted into the cavity.
Therefore, the injection mold with the structure can solve the problem of shrinkage of the plastic part in the cooling process, avoid the influence of fluid on the cooling efficiency, realize the quick cooling of the plastic part and improve the molding efficiency of the plastic part.
The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (8)
1. A water assist molded injection mold, the injection mold comprising: the core pulling device comprises an upper die holder (1), a lower die holder (2), an ejection mechanism (3), a melt injection mechanism (4), a fluid injection mechanism (5) and a core pulling mechanism (6), wherein the upper die holder (1) is jointed with the lower die holder (2), a cavity is formed between the upper die holder (1) and the lower die holder (2), the ejection mechanism (3) extends into the cavity from the lower die holder (2), and the melt injection mechanism (4), the fluid injection mechanism (5) and the core pulling mechanism (6) are inserted into the cavity; the fluid injection mechanism (5) comprises: the die comprises a filling positioning seat (51), a filling air cylinder (52), a filling sliding block (53) and a filling pipe (54), wherein the filling positioning seat (51) is fixed on the side surface of the lower die seat (2), the filling sliding block (53) is movably arranged on the filling positioning seat (51) along the horizontal direction, and a piston rod of the filling air cylinder (52), the filling sliding block (53) and the filling pipe (54) are sequentially fixed; the method is characterized in that: the fluid injection mechanism (5) further comprises: a heat dissipating metal ring (55), the heat dissipating metal ring (55) surrounding an outer wall of the filling tube (54).
2. The water assist molding injection mold of claim 1, wherein: the fluid injection mechanism (5) further comprises: a rubber ring (56), the rubber ring (56) being located between the filling slide (53) and the filling tube (54).
3. The water assist molding injection mold of claim 1, wherein: the upper die holder (1) comprises: the device comprises an upper substrate (11) and an upper pressing plate (12), wherein the upper pressing plate (12) and the upper substrate (11) are sequentially fixed from top to bottom, and the lower surface of the upper pressing plate (12) is provided with an upper cavity groove (121), an upper melt injection groove (122), an upper fluid injection groove (123) and an upper core-pulling channel (124); the lower die holder (2) comprises: the lower base plate (21), the support (22) and the lower pressing plate (23) are sequentially fixed from bottom to top, the ejection mechanism (3) extends into the cavity from the support (22), and the upper surface of the lower pressing plate (23) is provided with a lower cavity groove (231), a lower solution injection groove (232), a lower fluid injection groove (233) and a lower core-pulling channel (234); the upper cavity groove (121) and the lower cavity groove (231) form the cavity, the upper melt injection groove (122) and the lower melt injection groove (232) form a melt injection channel, the upper fluid injection groove (123) and the lower fluid injection groove (233) form a fluid injection channel, the melt injection mechanism (4) penetrates through the melt injection channel and is inserted into the cavity, the fluid injection mechanism (5) penetrates through the fluid injection channel and is inserted into the cavity, and the core pulling mechanism (6) simultaneously penetrates through the upper core pulling channel (124) and the lower core pulling channel (234) and is inserted into the cavity.
4. The water assist molding injection mold of claim 3, wherein: the lower surface of the upper pressing plate (12) is further provided with a positioning cylinder (125), the positioning cylinder (125) is recessed from the lower surface of the upper pressing plate (12), the upper surface of the lower pressing plate (23) is further provided with a positioning column (235), the positioning column (235) protrudes from the upper surface of the lower pressing plate (23), and the positioning column (235) is inserted into the positioning cylinder (125).
5. The water assist molding injection mold of claim 3, wherein: the ejection mechanism (3) comprises: ejector plate (31), a plurality of fore-set (32) and a plurality of thimble (33), fore-set (32) with thimble (33) are all followed the upper surface of ejector plate (31) is protruding, fore-set (32) are along the movably setting of upper and lower direction in support (22), fore-set (32) pass holding down plate (23), thimble (33) insert in the die cavity.
6. The water assist molding injection mold of claim 5, wherein: the bracket (22) is provided with a guide rod (221), the guide rod (221) extends along the up-down direction, and the guide rod (221) penetrates through the ejector plate (31).
7. The water assist molding injection mold of claim 1, wherein: the melt injection mechanism (4) includes: the injection molding device comprises an injection molding positioning seat (41), an injection molding cylinder (42), an injection molding sliding block (43) and an injection molding pipe (44), wherein the injection molding positioning seat (41) is fixed on the side face of the lower die seat (2), the injection molding sliding block (43) is movably arranged on the injection molding positioning seat (41) along the horizontal direction, a piston rod of the injection molding cylinder (42), the injection molding sliding block (43) and the injection molding pipe (44) are sequentially fixed, and the injection molding pipe (44) is inserted into a cavity.
8. The water assist molding injection mold of claim 1, wherein: the mechanism of the core-pulling mechanism (6) comprises: locking plate (61), locking lever (62), the positioning seat of loosing core (63), cylinder (64) and the slider (65) of loosing core, the positioning seat of loosing core (63) are fixed the side of die holder (2), the slider (65) of loosing core is along the movably setting of upper and lower direction in the positioning seat of loosing core (63), the piston rod of the cylinder of loosing core (64) with the slider (65) of loosing core forms fixedly, the side of the slider of loosing core (65) has chute (651), insert the outer end of locking lever (62) in chute (651), pass the middle part of locking lever (62) locking plate (61), insert the inner of locking lever (62) in the die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021596255.6U CN213006288U (en) | 2020-08-05 | 2020-08-05 | Water-assisted molding injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021596255.6U CN213006288U (en) | 2020-08-05 | 2020-08-05 | Water-assisted molding injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213006288U true CN213006288U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021596255.6U Active CN213006288U (en) | 2020-08-05 | 2020-08-05 | Water-assisted molding injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213006288U (en) |
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2020
- 2020-08-05 CN CN202021596255.6U patent/CN213006288U/en active Active
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