CN220784761U - Ejection mechanism for injection mold - Google Patents
Ejection mechanism for injection mold Download PDFInfo
- Publication number
- CN220784761U CN220784761U CN202322613275.XU CN202322613275U CN220784761U CN 220784761 U CN220784761 U CN 220784761U CN 202322613275 U CN202322613275 U CN 202322613275U CN 220784761 U CN220784761 U CN 220784761U
- Authority
- CN
- China
- Prior art keywords
- ejection
- hole
- air
- injection mold
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002347 injection Methods 0.000 title claims abstract description 25
- 239000007924 injection Substances 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an ejection mechanism for an injection mold, which belongs to the technical field of injection molds and comprises a lower mold, wherein an ejection hole is formed in the middle of the lower mold, the top of the ejection hole is communicated with an upper hole with the diameter larger than that of the ejection hole, an ejection pipe is slidably connected to the inner side wall of the ejection hole, an ejection piece with the diameter larger than that of the upper hole is welded at the top of the ejection pipe, a plurality of air holes are formed in the upper part of the ejection pipe at equal intervals in a circle, an elastic piston assembly capable of blocking the air holes is mounted at the top of the inner side wall of the ejection pipe, and an air inlet at the lower part of the ejection pipe is connected with an air supply assembly.
Description
Technical Field
The utility model relates to the field of injection molds, in particular to an ejection mechanism for an injection mold.
Background
Injection molding, also known as injection molding, is a method of injection and molding. The injection molding method has the advantages of high production speed and high efficiency, automation of operation, multiple patterns and varieties, simplified and complex shapes, large to small sizes, accurate product size, easy updating of products and complex shape forming, and the injection mold is a mold used in the injection molding process for shaping molten plastic into a specific size and shape, and an ejection mechanism is needed when the injection mold is demolded.
The patent number CN202221739899.5 discloses a demolding ejection mechanism for an injection mold, wherein a base is arranged, an ejector rod extending out of the base is movably arranged in an inner cavity of the base, the ejector rod moves in the base through the jogging of an arc block and an arc groove, a second spring is arranged between the ejector rod and the base, when an ejection module is ejected, the ejector rod moves inwards under the action of impact force when contacting with the low end of a product, the impact force is converted into the second spring to absorb and reduce, the damage to the appearance of the product caused by the overlarge impact force when the ejector rod is ejected is avoided, in addition, a rubber block is arranged at the top end of the ejector rod, the contact area between the ejector rod and the product is enlarged, the impact force ejected by the ejector rod is further buffered and dispersed, the product can be ejected slowly at uniform speed when the demolding is ensured, and the qualification of the product is effectively ensured; through seting up the passageway at the inner chamber of ejector pin and rubber piece to install the subassembly of supplying air that stretches into in the through-hole on the base inner wall, when product and lower mould inner wall produced the cavity when drawing of patterns, because the inside air pressure of cavity is less, external air gets into in the through-hole along the metal pipe this moment, and enters into the cavity along the venthole from the through-hole, make the atmospheric pressure of cavity keep balanced with external atmospheric pressure, thereby made things convenient for ejecting the product, avoided drawing of patterns difficulty because of the atmospheric pressure difference causes, increased the production efficiency of moulding plastics.
The demolding ejection mechanism for the injection mold disclosed in the patent absorbs and reduces impact force to the second spring, so that the product appearance damage caused by overlarge impact force when the ejector rod is ejected is avoided, meanwhile, the ejection force is weakened, ejection is not easy, meanwhile, the contact surface between the top of the ejector rod and the product is still smaller, and the product is still easy to eject.
Disclosure of Invention
The utility model aims to provide an ejection mechanism for an injection mold, which adopts a one-way valve formed by an elastic piston assembly propping up the top of a pipe and is matched with an air supply assembly, so that the ejection mechanism can uniformly demould by introducing air and is not easy to prop up a product, thereby solving the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an ejection mechanism for injection mold, includes the lower mould, the ejecting hole has been seted up at the lower mould middle part, ejecting hole top intercommunication has the upper hole that the diameter is greater than ejecting hole, ejecting hole inside wall sliding connection has the ejector tube, ejector tube top welding has the ejecting piece that the diameter is greater than the upper hole, ejecting tube upper portion round is circumference equidistance and has seted up a plurality of gas pocket, the elasticity piston subassembly that can plug up the gas pocket is installed at ejector tube inside wall top, ejector tube lower part air inlet is connected with the air feed subassembly.
As a further scheme of the utility model: the lower part of the outer side wall of the lower die is integrally connected with a rigid sealing ring, and the top of the lower die is connected with an upper die through the rigid sealing ring.
As a further scheme of the utility model: the upper die is connected to the bottom of the upper seat through an electric telescopic rod, four corners of the bottom of the upper seat are connected with middle seats through struts, and four corners of the bottom of the middle seat are connected with bases through struts.
As a further scheme of the utility model: the bottom of the ejector tube is welded with a limiting piece, and the bottom of the limiting piece is connected to the top of the base through a first spring.
As a further scheme of the utility model: the elastic piston assembly comprises a second spring welded at the top of the inner side wall of the ejector tube, a piston is welded at the bottom of the second spring, and the piston can block the air hole.
As a further scheme of the utility model: the air supply assembly comprises a hose connected with an air inlet at the lower part of the ejection pipe, and the air inlet of the hose is connected with an air outlet of the air pump.
Compared with the prior art, the utility model has the beneficial effects that:
the ejection mechanism for the injection mold disclosed by the utility model adopts the one-way valve formed by the elastic piston assembly which is propped against the top of the pipe, is matched with the air supply assembly, can uniformly demould by introducing air, is not easy to prop up a damaged product, and solves the problems that the ejection mechanism for the injection mold disclosed in the above patent is used for absorbing and reducing impact force to a second spring, so that the damage to the appearance of the product caused by overlarge impact force when the ejector rod is jacked is avoided, meanwhile, the ejection force is weakened, the ejection is not easy to occur, and meanwhile, the contact surface between the top of the ejector rod and the product is still smaller, and the product is still easy to prop up the damaged product.
Drawings
Fig. 1 is a schematic structural view of an ejection mechanism for an injection mold according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the structure at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of an ejection mechanism for an injection mold according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of the structure at B in fig. 3.
In the figure: 1. an upper seat; 2. a support post; 3. a middle seat; 4. a base; 5. an electric telescopic rod; 6. an upper die; 7. an air pump; 8. a hose; 9. a top outlet pipe; 10. a limiting piece; 11. a first spring; 12. a lower die; 13. a rigid seal ring; 14. an ejection hole; 15. an upper hole; 16. an ejector plate; 17. a second spring; 18. a piston; 19. and (5) air holes.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments. Materials and equipment used in this example are commercially available, except as specifically noted. Examples of such embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Referring to fig. 1 to 4, in an embodiment of the present utility model, an ejection mechanism for an injection mold includes a lower mold 12, an ejection hole 14 is provided in the middle of the lower mold 12, an upper hole 15 with a diameter larger than that of the ejection hole 14 is connected to the top of the ejection hole 14, an ejection tube 9 is slidably connected to the inner side wall of the ejection hole 14, an ejection plate 16 with a diameter larger than that of the upper hole 15 is welded to the top of the ejection tube 9, a plurality of air holes 19 are provided at equal intervals on a circle of circumference on the upper portion of the ejection tube 9, an elastic piston assembly capable of blocking the air holes 19 is mounted on the top of the inner side wall of the ejection tube 9, and an air supply assembly is connected to an air inlet on the lower portion of the ejection tube 9.
The lower part of the outer side wall of the lower die 12 is integrally connected with a rigid sealing ring 13, and the top of the lower die 12 is connected with an upper die 6 through the rigid sealing ring 13, so that the sealing effect is good; the upper die 6 is connected to the bottom of the upper seat 1 through an electric telescopic rod 5, four corners of the bottom of the upper seat 1 are connected with a middle seat 3 through support posts 2, four corners of the bottom of the middle seat 3 are connected with a base 4 through the support posts 2, and the support is stable; the bottom of the ejector tube 9 is welded with a limiting plate 10, and the bottom of the limiting plate 10 is connected to the top of the base 4 through a first spring 11, so that the ejector tube 9 can be automatically reset after a product is ejected; the elastic piston assembly comprises a second spring 17 welded at the top of the inner side wall of the ejector tube 9, a piston 18 is welded at the bottom of the second spring 17, and the piston 18 can block the air hole 19 to form a one-way air outlet valve; wherein, the air feed subassembly includes the hose 8 that ejector tube 9 lower part air inlet is connected, and hose 8 air inlet is connected with the gas outlet of air pump 7, conveniently ventilates in the ejector tube 9.
The working principle of the utility model is as follows: according to the ejection mechanism for the injection mold, a one-way valve formed by an elastic piston assembly at the top of the ejection pipe 9 is adopted, the air supply assembly is matched, the ejection of a product is not easy to occur, when the ejection is needed, an external power supply is used for supplying power, the air pump 7 is opened through the external switch, the air pump 7 conveys the air into the ejection pipe 9 through the hose 8, the air pressure at the lower part of the ejection pipe 9 is changed due to the newly input air in the ejection pipe 9, the piston 18 in the ejection pipe 9 is ejected upwards, the second spring 17 is compressed and shortened, at the moment, the air hole 19 leaks out, the air overflows into the upper hole 15 from the air hole 19, the ejection piece 16 is ejected upwards, the ejection pipe 9 slides upwards along the inner side wall of the ejection hole 14, the first spring 11 at the bottom of the ejection pipe 9 stretches and stretches, the air leaks out from the ejector piece 16, the product attached to the lower mold 12 is ejected by air uniformly, the product is not easy to occur, the product is ejected, the air pump 7 is closed after the product is ejected, the first spring 11 is shortened and reset to drive the ejection pipe 9 to reset, the second spring 17 stretches and the reset to drive the piston 18 to slide downwards to reset to block the air hole 19 (7 is the existing product).
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. An ejection mechanism for an injection mold, comprising a lower mold (12), characterized in that: ejection hole (14) have been seted up at lower mould (12) middle part, ejection hole (14) top intercommunication has upper hole (15) that the diameter is greater than ejection hole (14), ejection hole (14) inside wall sliding connection has ejection tube (9), ejection tube (9) top welding has ejection piece (16) that the diameter is greater than upper hole (15), a plurality of gas pocket (19) have been seted up to ejection tube (9) upper portion round in circumference equidistance, elastic piston subassembly that can block up gas pocket (19) is installed at ejection tube (9) inside wall top, ejection tube (9) lower part air inlet is connected with air feed subassembly.
2. The ejection mechanism for an injection mold according to claim 1, wherein: the lower part of the outer side wall of the lower die (12) is integrally connected with a rigid sealing ring (13), and the top of the lower die (12) is connected with an upper die (6) through the rigid sealing ring (13).
3. The ejection mechanism for an injection mold according to claim 2, wherein: the upper die (6) is connected to the bottom of the upper seat (1) through an electric telescopic rod (5), four corners of the bottom of the upper seat (1) are connected with the middle seat (3) through the support posts (2), and four corners of the bottom of the middle seat (3) are connected with the base (4) through the support posts (2).
4. An ejection mechanism for an injection mold according to claim 3, wherein: the bottom of the ejector tube (9) is welded with a limiting piece (10), and the bottom of the limiting piece (10) is connected to the top of the base (4) through a first spring (11).
5. The ejection mechanism for an injection mold according to claim 1, wherein: the elastic piston assembly comprises a second spring (17) welded at the top of the inner side wall of the ejector tube (9), a piston (18) is welded at the bottom of the second spring (17), and the piston (18) can block the air hole (19).
6. The ejection mechanism for an injection mold according to claim 1, wherein: the air supply assembly comprises a hose (8) connected with an air inlet at the lower part of the ejection pipe (9), and an air outlet of the air pump (7) is connected with an air inlet of the hose (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322613275.XU CN220784761U (en) | 2023-09-26 | 2023-09-26 | Ejection mechanism for injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322613275.XU CN220784761U (en) | 2023-09-26 | 2023-09-26 | Ejection mechanism for injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220784761U true CN220784761U (en) | 2024-04-16 |
Family
ID=90660430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322613275.XU Active CN220784761U (en) | 2023-09-26 | 2023-09-26 | Ejection mechanism for injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220784761U (en) |
-
2023
- 2023-09-26 CN CN202322613275.XU patent/CN220784761U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220517424U (en) | Injection mold for precise structural part of electronic product | |
| CN216182275U (en) | Anti-bubble injection mold convenient to demolding | |
| CN220784761U (en) | Ejection mechanism for injection mold | |
| CN221392108U (en) | Injection mold ejection structure | |
| CN215472913U (en) | Injection molding mold | |
| CN216992922U (en) | Air blowing and demolding mechanism of injection mold | |
| CN214188201U (en) | Injection mold convenient to collect products | |
| CN214239289U (en) | Oblique ejection demoulding structure of injection mould | |
| CN209079065U (en) | A kind of Automobile heat shield injection forming mold | |
| CN221022171U (en) | Mould with exhaust structure | |
| CN219855834U (en) | Mould with mushroom head miniature umbrella-shaped demoulding structure | |
| CN222473242U (en) | Tide toy white embryo injection mold | |
| CN218256575U (en) | Novel gas cap | |
| CN220180052U (en) | Wind deflector injection mold | |
| CN216465981U (en) | Plug injection mold | |
| CN218139679U (en) | Demoulding ejection mechanism for injection mould | |
| CN219213983U (en) | Demoulding device of wire harness protective sleeve | |
| CN223030277U (en) | Injection mold ejection mechanism | |
| CN220548629U (en) | Semiconductor plastic package die capable of preventing exhaust blocking | |
| CN218118755U (en) | Appearance product mould internal nitrogen blowing structure | |
| CN218876171U (en) | Rapid demoulding device is used in production of new hat detect reagent pipe | |
| CN217346526U (en) | Forming device for plastic processing | |
| CN222309706U (en) | A plastic mold capable of rapid demoulding | |
| CN220499819U (en) | Exhaust structure of injection mold | |
| CN205310726U (en) | Ejecting mould of gas cap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |