CN220593885U - Gas-assisted forming mechanism suitable for injection mold - Google Patents
Gas-assisted forming mechanism suitable for injection mold Download PDFInfo
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- CN220593885U CN220593885U CN202322038668.2U CN202322038668U CN220593885U CN 220593885 U CN220593885 U CN 220593885U CN 202322038668 U CN202322038668 U CN 202322038668U CN 220593885 U CN220593885 U CN 220593885U
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- Prior art keywords
- injection mold
- supporting seat
- gas
- mold
- traction seat
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- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 56
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 12
- 238000001746 injection moulding Methods 0.000 abstract description 18
- 238000007599 discharging Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a gas-assisted forming mechanism suitable for an injection mold, which comprises a male mold plate, mold legs, a fixed base and a material ejection part, wherein a mold groove and a material discharging groove communicated with the mold groove are arranged on the male mold plate; the ejection piece comprises an ejection block embedded at the bottom of the die cavity, and a nitrogen nozzle is arranged on the ejection block; be provided with the supporting seat on the public template, one side and part die cavity of supporting seat, the drain chute lateral wall enclose to establish and form the discharge channel, are provided with on the supporting seat and keep off the material pole, and the one end that keeps off the material pole can pass the supporting seat and block the discharge channel, and its other end is provided with the drive assembly that can drive and keep off the material pole and remove. The utility model provides a gas-assisted forming mechanism suitable for an injection mold, which solves the problems that when the gas-assisted forming mechanism used by the existing injection mold is used for production, a nitrogen cavity is directly communicated with a waste tank, so that the pressure maintaining pressure in the cavity is easy to be unbalanced, the wall thickness of an injection molding part is uneven, and the product quality is influenced.
Description
Technical Field
The utility model relates to the technical field of gas-assisted molding of injection molds, in particular to a gas-assisted molding mechanism suitable for an injection mold.
Background
The injection mold is mainly provided with a male mold plate and a female mold plate which are matched, a cavity structure corresponding to the appearance of a product is formed between the male mold plate and the female mold plate, molten plastic is injected into the cavity structure through an injection hole, and a product plastic part is formed after the plastic is cooled. The gas-assisted molding technology is also called gas-assisted injection molding, hollow molding and the like in the injection mold industry, and is often applied to the production of automobile shell plastic parts. The gas-assisted molding technology is adopted to form an air cavity in the molten plastic, so that a hollow cavity is formed in the injection molding part, the residual stress in the injection molding part can be reduced, the mechanical strength and rigidity of the injection molding part are improved, the cooling time of the injection molding part can be reduced, the loss of materials is reduced, and the like.
When the gas-assisted forming mechanism used by the existing automobile injection mold is used for production, a long and narrow cavity needs to be formed in part of injection molding parts, nitrogen is introduced into the injection molding parts in a molten state in the actual production process, and when the cavity is formed in the injection molding parts due to the nitrogen, redundant plastic can enter a waste groove reserved in a master template, the cavity is directly communicated with the waste groove, so that pressure maintaining pressure imbalance is easily caused, the wall thickness of the injection molding parts is uneven, and the product quality is affected.
Disclosure of Invention
The utility model overcomes the defects of the prior art, provides the gas-assisted forming mechanism suitable for the injection mold, and solves the problems that when the gas-assisted forming mechanism used by the existing injection mold is used for production, nitrogen is introduced into an injection molding piece in a molten state, and simultaneously, the nitrogen causes the inside of the injection molding piece to form a cavity, and meanwhile, redundant plastic enters a waste groove reserved on a master template, and the cavity is directly communicated with the waste groove, so that the pressure maintaining pressure in the cavity is unbalanced easily, the wall thickness of the injection molding piece is uneven, and the product quality is affected.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the gas-assisted forming mechanism suitable for the injection mold comprises a male mold plate, mold legs, a fixed base and a material ejection part, wherein a mold groove and a material discharge groove communicated with the mold groove are arranged on the male mold plate;
the ejector piece comprises an ejector block embedded at the bottom of the die cavity, and a nitrogen nozzle is arranged on the ejector block;
be provided with the supporting seat on the public template, one side and part of supporting seat the diaphragm groove, the side wall of row's silo enclose to establish and form the row material passageway, be provided with on the supporting seat and keep off the material pole, the one end that keeps off the material pole can pass the supporting seat blocks row material passageway, its other end is provided with the drive assembly that can drive and keep off the material pole and remove.
In a preferred embodiment of the present utility model, the driving assembly includes a feeding cylinder disposed on the male mold plate, a telescopic end of the feeding cylinder is embedded on a traction seat, and the other end of the traction seat is sleeved on the material blocking rod.
In a preferred embodiment of the utility model, the traction seat is provided with a distance measuring rod, a slope is arranged on the distance measuring rod, and the male template is provided with a plurality of travel switches which are in conflict with the slope and/or the traction seat.
In a preferred embodiment of the present utility model, ribs are provided on the outer periphery of the material blocking rod, and one end of the material blocking rod embedded into the traction seat is nail-shaped.
In a preferred embodiment of the utility model, a plurality of arc-shaped notches are arranged on one side of the traction seat facing the feeding oil cylinder, and limit screws which are arranged opposite to the arc-shaped notches are connected on the male die plate in a threaded manner.
In a preferred embodiment of the present utility model, an end of the traction seat attached to the male template is dovetail-shaped and is slidably embedded in the male template.
The utility model solves the defects existing in the background technology, and has the beneficial effects that:
through feeding hydro-cylinder drive traction seat and fender material pole slow movement, one side and part of gradual open supporting seat the moulding cavity, the row material channel of arranging the formation is enclosed to the row material groove lateral wall, makes unnecessary plastic can be at uniform velocity enter into the row material groove in this in-process, and the pressure in the gas cavity can keep invariable, and then can make the injection molding wall thickness more even.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a gas-assist molding mechanism suitable for an injection mold in accordance with a preferred embodiment of the present utility model;
FIG. 2 is a schematic view of the partial enlarged structure at B of FIG. 1 in a preferred embodiment of the utility model;
FIG. 3 is a schematic view of the enlarged partial structure at C of FIG. 1 in accordance with the preferred embodiment of the present utility model;
FIG. 4 is a schematic top view of FIG. 1 in accordance with a preferred embodiment of the present utility model;
FIG. 5 is a schematic view of the enlarged partial structure of FIG. 4 at D in accordance with the preferred embodiment of the present utility model;
FIG. 6 is a schematic view showing a structure of a material blocking rod embedded in a supporting seat according to a preferred embodiment of the present utility model;
wherein, 1, a male template; 2. a mold foot; 3. a fixed base; 4. a material ejection piece; 5. a nitrogen nozzle; 6. a support base; 7. a material blocking rod; 8. a feed cylinder; 9. a traction seat; 10. a ranging rod; 11. a travel switch; 12. ribs; 13. a limit screw; 101. a die cavity; 102. a discharge chute; 401. a top block; 901. an arc-shaped notch; 1001. and (3) a slope.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
In this embodiment, if a directional instruction (such as up, down, bottom, top, etc.) is provided, the directional instruction is merely used to explain the relative positional relationship between the components, the movement condition, etc. in a certain specific posture, and if the specific posture is changed, the directional instruction is changed accordingly. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-6, a gas-assisted forming mechanism suitable for an injection mold comprises a male mold plate 1, mold legs 2, a fixed base 3 and a material ejection piece 4, wherein a mold cavity 101 and a material discharge groove 102 communicated with the mold cavity 101 are arranged on the male mold plate 1;
the ejector 4 comprises an ejector block 401 embedded at the bottom of the die cavity 101, and a nitrogen nozzle 5 is arranged on the ejector block 401;
be provided with supporting seat 6 on the male template 1, one side of supporting seat 6 encloses with partial die cavity 101, discharge groove 102 lateral wall and establishes and form the discharge channel, is provided with on the supporting seat 6 and keeps off material pole 7, and the one end that keeps off material pole 7 can pass supporting seat 6 and block the discharge channel, and its other end is provided with the drive assembly that can drive and keep off material pole 7 and remove.
Specifically, a discharging channel is formed by surrounding one side of the supporting seat 6, a part of the die cavity 101 and the side wall of the discharging groove 102, before the die assembly of the male die plate 1 and the female die plate is closed for injection molding, the driving assembly drives the material blocking rod 7 to block the discharging channel, after the die assembly of the male die plate 1 and the female die plate is closed, a material cavity is formed between the die cavity 101 on the male die plate 1 and the female die plate, molten plastic is injected into the material cavity through a glue injection hole on the female die plate until the plastic fills the whole material cavity, and an injection molding piece is formed. Then nitrogen is filled into molten plastic through the nitrogen nozzle 5, a gas cavity is formed in the molten plastic, the driving assembly drives the material blocking rod 7 to slowly move reversely at the moment, the material discharging channel is gradually opened, redundant plastic enters the material discharging groove 102, the pressure in the gas cavity can be kept constant in the process, and the wall thickness of the injection molding part can be further uniform.
Further, as shown in fig. 3, the driving assembly includes a feeding cylinder 8 disposed on the male die plate 1, a telescopic end of the feeding cylinder 8 is embedded on a traction seat 9, and the other end of the traction seat 9 is sleeved on a material blocking rod 7. The telescopic end of the feed oil cylinder 8 drives the traction seat 9 to move, the material blocking rod 7 with one end embedded on the traction seat 9 is more capable of keeping constant speed movement under the drive of the feed oil cylinder 8,
further, as shown in fig. 3, in order to prevent the die from being damaged due to collision between the stop rod 7 and the side wall of the discharge channel, a distance measuring rod 10 is arranged on the traction seat 9, a slope 1001 is arranged on the distance measuring rod 10, and a plurality of travel switches 11 which are in collision with the slope 1001 and/or the traction seat 9 are arranged on the male die plate 1. When the material blocking rod 7 moves, the traction seat 9 and the distance measuring rod 10 move synchronously along with the material blocking rod 7, and the travel switch 11 is triggered by abutting the slope 1001 of the distance measuring rod 10 through the travel switch 11, so that the mechanical movement of the material blocking rod 7 is limited. Meanwhile, in order to prevent the male die plate 1 from being unable to be protected when the travel switch 11 is damaged, one side of the traction seat 9 facing the feed cylinder 8 is provided with a plurality of arc-shaped notches 901, and the male die plate 1 is connected with a limit screw 13 which is arranged opposite to the arc-shaped notches 901 in a threaded manner.
In this embodiment, in order to prevent stopping the material pole 7 and can't closely laminate with the lateral wall of discharge channel after deflecting, the periphery of stopping the material pole 7 is provided with rib 12, simultaneously for the convenience when stopping the material pole 7 wearing and tearing and changing new stopping the material pole 7, the one end that stopping the material pole 7 imbeds the traction seat 9 is the nail form.
Further, in order to prevent the shaking amplitude from being too large when the traction seat 9 moves, one end of the traction seat 9 attached to the male template 1 is dovetail-shaped and is slidably embedded on the male template 1.
Working principle: the traction seat 9 and the material blocking rod 7 are driven by the feeding oil cylinder 8 to slowly move, the material discharging channel is gradually opened, redundant plastic can enter the material discharging groove 102 at a uniform speed, and in the process, the pressure in the gas cavity can be kept constant, so that the wall thickness of an injection molding part can be more uniform.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. The utility model provides a forming mechanism is assisted to gas suitable for injection mold, includes public template (1), mould foot (2), unable adjustment base (3) and liftout spare (4), its characterized in that: a die groove (101) and a discharge groove (102) communicated with the die groove (101) are arranged on the male die plate (1);
the ejector piece (4) comprises an ejector block (401) embedded at the bottom of the die cavity (101), and a nitrogen nozzle (5) is arranged on the ejector block (401);
be provided with supporting seat (6) on public template (1), one side and part of supporting seat (6) mould groove (101), discharge groove (102) lateral wall enclose and establish and form the row material passageway, be provided with on supporting seat (6) and keep off material pole (7), the one end that keeps off material pole (7) can pass supporting seat (6) blocks the row material passageway, its other end is provided with the drive assembly that can drive and keep off material pole (7) and remove.
2. The gas assist molding mechanism for an injection mold according to claim 1, wherein: the driving assembly comprises a feeding oil cylinder (8) arranged on the male die plate (1), the telescopic end of the feeding oil cylinder (8) is embedded on a traction seat (9), and the other end of the traction seat (9) is sleeved on the material blocking rod (7).
3. The gas assist molding mechanism for an injection mold according to claim 2, wherein: be provided with range finding pole (10) on traction seat (9), be provided with slope (1001) on range finding pole (10), be provided with a plurality of travel switches (11) that contradict with slope (1001) and/or traction seat (9) on public template (1).
4. A gas assist molding mechanism for an injection mold according to claim 3, wherein: the periphery of fender material pole (7) is provided with rib (12), fender material pole (7) embedding the one end of traction seat (9) is the nail form.
5. The gas assist molding mechanism for an injection mold according to claim 2, wherein: one side of the traction seat (9) facing the feeding oil cylinder (8) is provided with a plurality of arc-shaped notches (901), and the male die plate (1) is connected with limit screws (13) which are arranged opposite to the arc-shaped notches (901) in a threaded manner.
6. The gas assist molding mechanism for an injection mold according to claim 2, wherein: one end of the traction seat (9) attached to the male template (1) is dovetail-shaped and is embedded on the male template (1) in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322038668.2U CN220593885U (en) | 2023-08-01 | 2023-08-01 | Gas-assisted forming mechanism suitable for injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322038668.2U CN220593885U (en) | 2023-08-01 | 2023-08-01 | Gas-assisted forming mechanism suitable for injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220593885U true CN220593885U (en) | 2024-03-15 |
Family
ID=90173761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322038668.2U Active CN220593885U (en) | 2023-08-01 | 2023-08-01 | Gas-assisted forming mechanism suitable for injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220593885U (en) |
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2023
- 2023-08-01 CN CN202322038668.2U patent/CN220593885U/en active Active
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