CN210910944U - Injection mold for producing large-scale thin-wall product - Google Patents
Injection mold for producing large-scale thin-wall product Download PDFInfo
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- CN210910944U CN210910944U CN201921284654.6U CN201921284654U CN210910944U CN 210910944 U CN210910944 U CN 210910944U CN 201921284654 U CN201921284654 U CN 201921284654U CN 210910944 U CN210910944 U CN 210910944U
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Abstract
The utility model relates to the technical injection mold field, in particular to an injection mold for producing large thin-wall products, which solves the problems that the fiber orientation, the phenomenon of stress concentration easily occurs when the thin-wall product is partially too thick or too thin in the injection molding process of thermosetting plastics and the internal stress distribution of the product is uniform due to the uneven temperature reduction of the thin-wall product during the demolding and cooling so as to cause the buckling deformation of the thin-wall product in the prior art, and comprises a movable mold and a fixed mold, wherein the movable mold is arranged in a movable mold seat, the fixed mold is arranged in the fixed mold seat, the two side edge seals of the movable mold and the fixed mold are connected through a locking mechanism, the utility model utilizes six parallel overflowing passages, the liquid outlet channel, the liquid outlet and the liquid inlet enable the temperature to be increased or decreased uniformly when hot water or cold water is injected into the fixed die, and the situation that a large thin-wall product is warped, deformed or cracked due to uneven distribution or uneven cooling of injection molding melt is avoided.
Description
Technical Field
The utility model relates to an injection mold technical field especially relates to an injection mold of large-scale thin wall product of production.
Background
An injection mold is a tool for producing plastic products, and a material melted by heat is injected into a mold cavity from high pressure, and a formed product is obtained after cooling and solidification. The large thin-wall product occupies a large proportion in the production of an injection mold, but fiber orientation can occur in the injection molding process of thermosetting plastics, so that internal stress exists in the large thin-wall product, and the large thin-wall product is warped, deformed and even cracked. When the melt flows in the injection molding cavity, the distribution is uneven, so that the large thin-wall product is partially too thick or too thin and stress concentration is easy to occur, the thin-wall product is warped and deformed, and the uneven cooling of the inside of the thin-wall product during demolding and cooling is easy to cause the even distribution of the stress in the product, so that the warping deformation and even the breakage of the thin-wall product are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving and having the fiber orientation that can appear among the prior art among the thermosetting plastic injection moulding process for stress including large-scale thin-walled product memory leads to large-scale thin-walled product buckling deformation, breaks even. When the melt flows in the injection molding cavity, the distribution is uneven, so that the large thin-wall product is partially too thick or too thin and stress concentration is easy to occur, the thin-wall product is warped and deformed, and the uneven cooling of the inside of the thin-wall product during demolding and cooling is easy to cause the even distribution of the stress in the product, so that the warping deformation and even the breakage of the thin-wall product are caused. The injection mold for producing large-scale thin-wall products is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an injection mold for producing large-scale thin-wall products comprises a movable mold and a fixed mold, wherein the movable mold is arranged inside a movable mold seat, the fixed mould is arranged in the fixed mould seat, the sealing edges at two sides of the movable mould and the fixed mould are connected by a locking mechanism, a nozzle bushing is embedded in an opening formed in the center of the movable mold, a nozzle is arranged in the nozzle bushing, six overflowing channels are arranged in the fixed die at equal intervals along the length direction of the fixed die, the locking mechanism comprises a screw rod, a spring, a fastening nut, a fixing nut, a first gasket and a second gasket, the first gasket and the second gasket are respectively sleeved on two sides of the screw rod, a spring is arranged between the first gasket and the second gasket outside the screw rod, one end of the screw rod is in threaded connection with a fastening nut, and the other end of the screw rod is in threaded connection with a fixing nut.
Preferably, the locking mechanism further comprises a gear and a fixture block, the gear is welded on one side, close to the movable mold, of the fastening nut, the fixture block is slidably mounted in a guide groove formed in one side of the gear on the side face of the movable mold, and the side face of the fixture block is meshed with the gear.
Preferably, a through hole for one end of the screw to pass through is formed in one side of the movable mold, a through hole for the other end of the screw to pass through is formed in one side of the fixed mold, and the thread directions of the two ends of the screw which are externally tapped are opposite.
Preferably, the first gasket and the second gasket are arranged between the movable mold and the fixed mold, and the fixing nut is arranged in a cavity formed in the fixed mold.
Preferably, an annular heating block is installed on the outer side of the nozzle inside the movable mold, and a heating plate is installed on each of two sides of the nozzle inside the movable mold.
Preferably, the center positions of the six overflowing passages are provided with liquid outlet passages along the short side direction of the fixed die.
Preferably, a liquid inlet is welded at the middle part of the short edge of each side of the fixed die respectively, a liquid outlet is welded at the middle part of the long edge of each side of the fixed die respectively, the liquid inlets correspondingly communicate with the two ends of the six overflowing channels, and the liquid outlets correspondingly connect the two ends of the liquid outlet channels.
The utility model has the advantages that: the spring is arranged outside the screw of the locking mechanism, when the mold is opened, the movable mold and the fixed mold are separated by the elasticity of the spring, and the separation distance is controlled by the fixed nut, so that the internal stress of the large thin-wall product is avoided, the phenomenon that the large thin-wall product is warped, deformed or even cracked is avoided, and the quality of the large thin-wall product is greatly improved; the six parallel flow passages, the liquid outlet passage, the two liquid outlets and the two liquid inlets enable the temperature to be increased or reduced uniformly when hot water or cold water is injected into the fixed die, and the situation that a large-sized thin-wall product is warped, deformed or cracked due to uneven distribution or uneven cooling of injection molding melt is avoided.
Drawings
Fig. 1 is a schematic structural diagram of an injection mold for producing large-sized thin-walled products according to the present invention;
fig. 2 is a schematic structural view of a locking mechanism of an injection mold for producing large-sized thin-walled products according to the present invention;
fig. 3 is the utility model provides a production large-scale thin wall product's injection mold's bed die inner structure sketch map.
In the figure: the device comprises a movable mould seat 1, a fixed mould seat 2, a movable mould 3, a fixed mould 4, a nozzle 5, a nozzle bush 6, a heating plate 7, an annular heating block 8, a locking mechanism 9, a screw 91, a spring 92, a fixing nut 93, a fastening nut 94, a first gasket 95, a second gasket 96, a gear 97, a fixture block 98, a flow passage 10, a liquid outlet passage 11, a liquid outlet 12 and a liquid inlet 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, an injection mold for producing large thin-walled products comprises a movable mold 3 and a fixed mold 4, the movable mold 3 is installed inside a movable mold base 1, the fixed mold 4 is installed inside a fixed mold base 2, sealed edges at two sides of the movable mold 3 and the fixed mold 4 are connected through a locking mechanism 9, a nozzle bushing 6 is installed in an opening formed in the center of the movable mold 3 in an embedded manner, a nozzle 5 is installed inside the nozzle bushing 6, six overflowing passages 10 are formed in the fixed mold 4 along the length direction at equal intervals, the locking mechanism 9 comprises a screw 91, a spring 92, a fastening nut 93, a fixing nut 94, a first gasket 95 and a second gasket 96, the first gasket 95 and the second gasket 96 are respectively sleeved on two sides of the screw 91, the spring 92 is installed between the first gasket 95 and the second gasket 96 outside the screw 91, one end of the screw 91 is in threaded connection with the fastening nut 93, the other end of the screw 91 is in threaded connection with a fixed nut 94, a spring 92 is arranged outside the screw 91 of the locking mechanism 9, when the mold is opened, the movable mold 3 and the fixed mold 4 are separated by the elastic force of the spring 92, the separation distance is controlled by the fixed nut 93, internal stress stored in a large thin-wall product is further avoided, the phenomenon that the large thin-wall product is warped and deformed or even cracked is avoided, and the quality of the large thin-wall product is greatly improved.
Further, the locking mechanism 9 further comprises a gear 97 and a fixture block 98, the gear 97 is welded on one side of the fastening nut 93 close to the movable mold 3, the fixture block 98 is slidably mounted in a guide groove formed in one side of the gear 97 on the side surface of the movable mold 3, the side surface of the fixture block 98 is meshed with the gear 97, the fastening nut 93 is positioned through meshing between the fixture block 98 and the gear 97, and the distance separating the movable mold 3 and the fixed mold 4 is accurately controlled.
Further, a through hole for one end of the screw 91 to pass through is formed in one side of the movable mold 3, a through hole for the other end of the screw 91 to pass through is formed in one side of the fixed mold 4, and the thread directions of the two ends of the screw 91 which are externally tapped are opposite.
Further, a first spacer 95 and a second spacer 96 are installed between the movable mold 3 and the fixed mold 4, and a fixing nut 94 is installed in a cavity opened in the fixed mold 4.
Further, an annular heating block 8 is installed outside the nozzle 5 inside the moving mold 3, and one heating plate 7 is installed on each side of the nozzle 5 inside the moving mold 3.
Furthermore, the center positions of the six flow channels 10 are provided with liquid outlet channels 11 along the short side direction of the fixed die 4.
Furthermore, a liquid inlet 13 is welded in the middle of the short sides at two sides of the fixed die 4, a liquid outlet 12 is welded in the middle of the long sides at two sides of the fixed die 4, the two liquid inlets 13 are correspondingly communicated with two ends of the six overflowing channels 10, the two liquid outlets 12 are correspondingly connected with two ends of the liquid outlet channel 11, the two liquid inlets 13 at two sides of the fixed die 4 are respectively filled with hot water waste heat from two sides of the six overflowing channels 10 to the fixed die 4, so that the melt is uniformly distributed in the injection molding cavity, the phenomenon that stress concentration is generated due to the fact that the melt is cooled unevenly in the injection molding cavity is avoided, the large thin-wall product is prevented from warping and deforming, and the fixed die 4 is uniformly heated by hot water through the liquid outlet; after injection molding is finished, cooling water is injected into the six overflowing passages 10 through the two liquid inlets 13 and is discharged through the liquid outlet passages 11 and the two liquid outlets 12, so that the temperature of the fixed mold 4 is uniformly reduced, the temperature of an injection molded body is uniformly reduced, and the condition that a large thin-wall product is warped, deformed or cracked due to nonuniform cooling is avoided.
In this embodiment, the two sides of the movable mold 3 and the fixed mold 4 are connected through the locking mechanism 9, the spring 92 is installed outside the screw 91 of the locking mechanism 9, when the mold is opened, the movable mold 3 and the fixed mold 4 are separated by the elastic force of the spring 92, the separation distance is controlled by the fixing nut 93, further internal stress in the large thin-wall product is avoided, the large thin-wall product is prevented from warping and even cracking, the quality of the large thin-wall product is greatly improved, the fixing nut 93 is positioned through the engagement between the fixture block 98 and the gear 97, and the separation distance between the movable mold 3 and the fixed mold 4 is accurately controlled. Move the inside annular heating piece 8 in the nozzle 5 outside of mould 3 and heat the inside fuse-element of nozzle 5 for the fuse-element that is located central point keeps the molten condition all the time, and the fuse-element of feed cylinder passes through continuously and gets into the intracavity portion of moulding plastics, and two hot plates 7 of the inside both sides of moving mould 3 heat the fuse-element of moulding plastics intracavity portion and make the fuse-element more smooth flow in the intracavity portion of moulding plastics. The two liquid inlets 13 on the two sides of the fixed die 4 respectively inject hot water waste heat into the fixed die 4 from the two sides of the six overflowing passages 10 to ensure that the melt is uniformly distributed in the injection molding cavity, so that the situation of stress concentration caused by cooling after the melt is non-uniform in the injection molding cavity is avoided, the large thin-wall product is prevented from warping and deforming, and the hot water passes through the liquid outlet passage 11 in the middle of the fixed die 4 and passes through the two liquid outlets 12 to ensure that the fixed die 4 is uniformly heated; after injection molding is finished, cooling water is injected into the six overflowing passages 10 through the two liquid inlets 13 and is discharged through the liquid outlet passages 11 and the two liquid outlets 12, so that the temperature of the fixed mold 4 is uniformly reduced, the temperature of an injection molded body is uniformly reduced, and the condition that a large thin-wall product is warped, deformed or cracked due to nonuniform cooling is avoided.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides an injection mold of production large-scale thin wall goods, includes movable mould (3) and fixed mould (4), its characterized in that, the inside at movable mould seat (1) is installed to movable mould (3), the inside at fixed mould seat (2) is installed to fixed mould (4), the both sides banding of movable mould (3) and fixed mould (4) is connected through a locking mechanical system (9), nozzle bush (6) are installed to the inside gomphosis of opening that movable mould (3) center was seted up, the internally mounted of nozzle bush (6) has nozzle (5), six overflow passageway (10) have been seted up along its length direction equidistance interval in the inside of fixed mould (4), locking mechanical system (9) include screw rod (91), spring (92), fastening nut (93), fixation nut (94), first gasket (95) and second gasket (96), the first gasket (95) and the second gasket (96) are respectively sleeved on two sides of the screw rod (91), a spring (92) is installed between the first gasket (95) and the second gasket (96) outside the screw rod (91), one end of the screw rod (91) is in threaded connection with the fastening nut (93), and the other end of the screw rod (91) is in threaded connection with the fixing nut (94).
2. The injection mold for producing the large-scale thin-walled product as claimed in claim 1, wherein the locking mechanism (9) further comprises a gear (97) and a block (98), the gear (97) is welded on one side of the fastening nut (93) close to the movable mold (3), the block (98) is slidably mounted on the side surface of the movable mold (3) in a guide groove formed in one side of the gear (97), and the side surface of the block (98) is meshed with the gear (97).
3. The injection mold for producing the large-sized thin-walled product according to claim 1, wherein a through hole for one end of the screw rod (91) to pass through is formed in one side of the movable mold (3), a through hole for the other end of the screw rod (91) to pass through is formed in one side of the fixed mold (4), and the thread directions of the two ends of the screw rod (91) which are externally tapped are opposite.
4. An injection mould for producing large-scale thin-walled products according to claim 1, characterized in that the first gasket (95) and the second gasket (96) are installed between the movable mould (3) and the fixed mould (4), and the fixing nut (94) is installed in a cavity opened in the fixed mould (4).
5. An injection mould for producing large thin-walled products according to claim 1, characterized in that the inside of the moving mould (3) is provided with an annular heating block (8) outside the nozzle (5), and the inside of the moving mould (3) is provided with a heating plate (7) on each side of the nozzle (5).
6. The injection mold for producing the large-sized thin-walled product according to claim 1, wherein the liquid outlet channel (11) is arranged at the center of the six flow passage channels (10) along the short side direction of the fixed mold (4).
7. The injection mold for producing large-scale thin-walled products according to claim 1, wherein one liquid inlet (13) is welded to the middle of the short side at both sides of the fixed mold (4), one liquid outlet (12) is welded to the middle of the long side at both sides of the fixed mold (4), two liquid inlets (13) are correspondingly communicated with two ends of six overflowing channels (10), and two liquid outlets (12) are correspondingly connected with two ends of a liquid outlet channel (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921284654.6U CN210910944U (en) | 2019-08-09 | 2019-08-09 | Injection mold for producing large-scale thin-wall product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921284654.6U CN210910944U (en) | 2019-08-09 | 2019-08-09 | Injection mold for producing large-scale thin-wall product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210910944U true CN210910944U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921284654.6U Active CN210910944U (en) | 2019-08-09 | 2019-08-09 | Injection mold for producing large-scale thin-wall product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210910944U (en) |
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2019
- 2019-08-09 CN CN201921284654.6U patent/CN210910944U/en active Active
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