CN216032271U - Injection mold with ejection structure - Google Patents
Injection mold with ejection structure Download PDFInfo
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- CN216032271U CN216032271U CN202122449906.XU CN202122449906U CN216032271U CN 216032271 U CN216032271 U CN 216032271U CN 202122449906 U CN202122449906 U CN 202122449906U CN 216032271 U CN216032271 U CN 216032271U
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- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 238000001746 injection moulding Methods 0.000 claims description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of injection molds, in particular to an injection mold with an ejection structure, which comprises a fixed mold, wherein the fixed mold is directly composed of a mold table and a middle forming block positioned at the top of the mold table, an air cavity is formed in the mold table, a sealing assembly is arranged in the air cavity, air outlet channels distributed at equal intervals are formed in the edge of the top of the forming block and communicated with the air cavity, guide assemblies are arranged at four corners of the top of the mold table, a movable mold is arranged on the guide assemblies, slide holes are formed in two sides of the top of the mold table, contact rods are fixed on two sides of the top of the movable mold and are slidably arranged on the inner walls of the slide holes, the utility model can ensure that a thinner shell is uniformly stressed by utilizing an air pressure ejection mode, and the local shell cannot be locally arched due to overlarge local stress, there is also no ejection mark.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to an injection mold with an ejection structure.
Background
Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, various colors, various shapes from simple to complex, small sizes, accurate product size, easy replacement of products, capability of forming products with complex shapes, and suitability for the molding processing fields of mass production, products with complex shapes and the like. Stirring the completely molten plastic material by a screw at a certain temperature, injecting the plastic material into a mold cavity by high pressure, and cooling and solidifying to obtain a molded product. The method is suitable for batch production of parts with complex shapes, and is one of important processing methods; injection molding generally uses an injection mold.
In the prior art, the following problems exist:
(1) in order to facilitate the smooth separation of the molded shell and the mold, an ejection mechanism is generally arranged on the fixed mold, but for the thinner shell, the ejection mechanism is used, so that an ejection trace is left on the shell;
(2) meanwhile, the ejection needle generally used by the ejection mechanism has the defect that the thinner molded shell is partially stressed too much to cause local arching, so that the molded shell is scrapped.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to an injection mold with an ejection structure, so as to solve the problems in the related art.
The technical scheme of the utility model is as follows: the utility model provides an injection mold with ejecting structure, includes the cover half, the cover half is direct to be become the piece two parts by the mould platform with the middle part that is located the mould bench top and constitute, the air cavity is seted up to the inside of mould platform, the internally mounted of air cavity has seal assembly, the edge at shaping piece top sets up the air outlet channel of equidistance distribution, air outlet channel is linked together with the air cavity, guide assembly is installed to four corners at mould bench top, the last movable mould that installs of guide assembly, the slide opening has all been seted up to the both sides at mould bench top, the both sides at movable mould top all are fixed with the contact arm, contact arm slidable mounting is at the slide opening inner wall.
Further, seal assembly includes dead lever and fixed ring board, and the fixed ring board is fixed on the inner wall of air cavity, and the top of dead lever is fixed with the sealed head of toper, and annular chamfer has been seted up to the inner wall of air cavity, and the sealed head of toper and annular chamfer looks adaptation have seted up the vertically air vent on the hypotenuse of annular chamfer, and the periphery wall of dead lever is located bottom position and slides completely on the inner wall of fixed ring board.
Further, the sealing assembly further comprises a first annular plate, the first annular plate is fixedly installed on the outer peripheral wall of the fixed rod, the first annular plate is located right above the fixed annular plate, a second spring is sleeved on the outer peripheral wall of the fixed rod, two ends of the second spring are respectively in contact with the fixed annular plate and the first annular plate, the fixed plate is fixed at the bottom of the fixed rod, a sliding groove is formed in the bottom of the die table, the air cavity and the sliding hole are communicated with the sliding groove, the fixed plate is slidably installed on the inner wall of the sliding groove, the fixed plate can be controlled to vertically move by vertically moving the fixed rod, when the fixed plate does not receive downward acting force, the second spring can constantly support the first annular plate, and a conical sealing head on the fixed rod is not in contact with the annular chamfer.
Furthermore, a first annular groove is formed in the top of the die table along the circumference of the forming block, first sliding cavities are formed in the bottom of the inner wall of the first annular groove and are distributed in an annular mode at equal intervals, a first guide hole is formed in the bottom of the inner wall of the first sliding cavity, a first guide rod is slidably mounted in the first guide hole, a second annular plate is fixed to the outer peripheral wall of the first guide rod, a third spring is mounted in a sleeved mode on the outer peripheral wall of the first guide rod, the two ends of the third spring are respectively in contact with the bottom of the inner wall of the first sliding cavity and the bottom of the second annular plate, an ejection annular plate is fixed to the top of the first guide rod, the third spring resets, and the forming shell is ejected through the ejection annular plate.
Furthermore, the middle part of movable mould bottom has been seted up into the die cavity, and the hole of moulding plastics has been seted up at the middle part at movable mould top, and the hole of moulding plastics is linked together with the die cavity, and the hole setting of moulding plastics is for the convenience of pouring into the raw materials.
Furthermore, a second annular groove is formed in the bottom of the movable mold along the edge of the molding cavity, second sliding cavities are distributed at the top of the inner wall of the second annular groove in an annular shape at equal intervals, a second guide hole is formed in the bottom of the inner wall of the second sliding cavity, a second guide rod is slidably mounted on the inner wall of the second guide hole, a third annular plate is fixed on the outer peripheral wall of the second guide rod, a fourth spring is sleeved on the outer peripheral wall of the second guide rod, two ends of the fourth spring are respectively in contact with the top of the inner wall of the second sliding cavity and the top of the third annular plate, a pressure annular plate is fixed at the bottom of the second guide rod, it should be noted that the elastic coefficient of the fourth spring is much larger than that of the third spring, and during the moving up of the movable mold, the fourth spring is reset and always pushes against the ejection ring plate, when the fourth spring is completely reset until the pressing ring plate is far away from the ejection ring plate, the third spring is reset, and the molded shell is ejected by the ejection ring plate.
Further, the direction subassembly includes the guide post, and the entering chamber has all been seted up to four corners at mould platform top, and the bottom in entering chamber is fixed to the bottom of guide post, and the periphery wall slidable mounting of guide post has a location section of thick bamboo, a location section of thick bamboo with get into chamber looks adaptation, and first spring has been cup jointed to the periphery wall of guide post, and the both ends of first spring contact with the top of mould platform and the bottom of a location section of thick bamboo respectively, and the laminating is accomplished to movable mould and cover half, and a location section of thick bamboo can get into the inside in chamber, can not restrict movable mould and cover half laminating process.
The utility model provides an injection mold with an ejection structure through improvement, and compared with the prior art, the injection mold has the following improvements and advantages:
one is as follows: according to the utility model, the sealing assembly, the air channel and the air outlet channel are arranged, after molding, in the process of moving the movable mold upwards, the contact rod is firstly far away from the fixed plate, the second spring is reset, the air channel is opened, air flows out from the air outlet channel to jack the molded shell, then the fourth spring is reset to always jack the ejection ring plate, when the fourth spring is completely reset, the third spring is reset until the pressing ring plate is far away from the ejection ring plate, so that the shell can be ejected out of a molded block in a secondary demolding mode, and by utilizing an air pressure ejection mode, the thin shell can be ensured to be uniformly stressed, local arching caused by overlarge local stress is avoided, and ejection marks are avoided;
the second step is as follows: according to the utility model, the inlet cavity is arranged, and the positioning cylinder gradually enters the inlet cavity in the process that the movable die moves downwards until the movable die and the fixed die are jointed, so that the positioning cylinder cannot be contacted with the bottom of the inlet cavity or just contacted with the bottom of the inlet cavity, and the movable die and the fixed die can be completely jointed.
Drawings
The utility model is further explained below with reference to the figures and examples:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front cut-away schematic view of the present invention;
FIG. 3 is an enlarged schematic view of the utility model at A;
FIG. 4 is an enlarged view of the structure at B of the present invention;
fig. 5 is an enlarged schematic view of the structure at C of the present invention.
Description of reference numerals:
1. fixing a mold; 2. a guide post; 3. a first spring; 4. a positioning cylinder; 5. moving the mold; 6. injection molding holes; 7. a contact lever; 8. a fixing plate; 9. fixing the rod; 10. a first ring plate; 11. ejecting the ring plate; 12. a ring pressing plate; 13. a first guide bar; 14. forming a block; 15. a second spring; 16. a second ring plate; 17. a third spring; 18. an air outlet channel; 19. a second guide bar; 20. a fourth spring; 21. a third ring plate.
Detailed Description
The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides an injection mold with an ejection structure through improvement, and the technical scheme of the utility model is as follows:
as shown in fig. 1-5, an injection mold with ejecting structure, including cover half 1, cover half 1 directly comprises mould platform and the middle part shaping piece 14 two parts that is located the mould bench top, the air cavity is seted up to the inside of mould platform, the internally mounted of air cavity has seal assembly, the edge at shaping piece 14 top has seted up the air outlet channel 18 that the equidistance distributes, air outlet channel 18 is linked together with the air cavity, guide assembly is installed to four corners at mould bench top, install movable mould 5 on the guide assembly, the slide opening has all been seted up to the both sides at mould bench top, the both sides at movable mould 5 top all are fixed with contact bar 7, contact bar 7 slidable mounting is at the slide opening inner wall.
Further, seal assembly includes dead lever 9 and fixed ring board, and the fixed ring board is fixed on the inner wall of air cavity, and the top of dead lever 9 is fixed with the sealed head of toper, and annular chamfer has been seted up to the inner wall of air cavity, and the sealed head of toper and annular chamfer looks adaptation have seted up the vertically air vent on the hypotenuse of annular chamfer, and the periphery wall of dead lever 9 is located bottom position and slides completely on the inner wall of fixed ring board.
Further, seal assembly still includes first crown plate 10, first crown plate 10 fixed mounting is at the periphery wall of dead lever 9, first crown plate 10 is located directly over the solid fixed ring board, second spring 15 has been cup jointed to the periphery wall of dead lever 9, the both ends of second spring 15 contact with solid fixed ring board and first crown plate 10 respectively, the bottom of dead lever 9 is fixed with fixed plate 8, the spout has been seted up to the bottom of mould platform, air cavity and slide opening all link up the spout, 8 slidable mounting of fixed plate are on the spout inner wall, fixed plate 8 reciprocates and can control dead lever 9 and reciprocate, when fixed plate 8 does not receive downward effort, second spring 15 can withstand first crown plate 10 constantly, make the sealed head of toper on the dead lever 9 not contact with annular chamfer.
Furthermore, a first annular groove is formed in the top of the mold table along the circumference of the molding block 14, first sliding cavities are formed in the bottom of the inner wall of the first annular groove and are distributed in an annular mode at equal intervals, a first guide hole is formed in the bottom of the inner wall of the first sliding cavity, a first guide rod 13 is slidably mounted in the first guide hole, a second annular plate 16 is fixed to the outer peripheral wall of the first guide rod 13, a third spring 17 is mounted on the outer peripheral wall of the first guide rod 13 in a sleeved mode, two ends of the third spring 17 are respectively in contact with the bottom of the inner wall of the first sliding cavity and the bottom of the second annular plate 16, an ejection annular plate 11 is fixed to the top of the first guide rod 13, the third spring 17 resets, and the molding shell is ejected by means of the ejection annular plate 11.
Further, the middle part of movable mould 5 bottom has been seted up into the die cavity, and injection molding hole 6 has been seted up at the middle part at movable mould 5 top, and injection molding hole 6 is linked together with the die cavity, and injection molding hole 6 sets up for the convenience is poured the raw materials into.
Further, a second annular groove is formed in the bottom of the movable mold 5 along the edge of the molding cavity, second sliding cavities are distributed at equal intervals in an annular manner in the top of the inner wall of the second annular groove, a second guide hole is formed in the bottom of the inner wall of the second sliding cavity, a second guide rod 19 is slidably mounted on the inner wall of the second guide hole, a third annular plate 21 is fixed on the outer peripheral wall of the second guide rod 19, a fourth spring 20 is sleeved on the outer peripheral wall of the second guide rod 19, two ends of the fourth spring 20 are respectively contacted with the top of the inner wall of the second sliding cavity and the top of the third annular plate 21, an annular pressing plate 12 is fixed on the bottom of the second guide rod 19, here, it needs to be stated that the elastic coefficient of the fourth spring 20 is far greater than the elastic coefficient of the third spring 17, in the upward movement process of the movable mold 5, the fourth spring 20 is reset and always abuts against the annular ejecting plate 11, when the fourth spring 20 is completely reset until the annular pressing plate 12 is far away from the annular ejecting plate 11, the third spring 17 is reset, and the molded shell is ejected by the ejection ring plate 11.
Further, the direction subassembly includes guide post 2, the entering chamber has all been seted up to four corners at mould platform top, the bottom in entering chamber is fixed to the bottom of guide post 2, the periphery wall slidable mounting of guide post 2 has a position sleeve 4, position sleeve 4 with get into chamber looks adaptation, first spring 3 has been cup jointed to the periphery wall of guide post 2, the both ends of first spring 3 contact with the top of mould platform and the bottom of position sleeve 4 respectively, laminating is accomplished to movable mould 5 and cover half 1, position sleeve 4 can get into the inside in entering chamber, can not restrict movable mould 5 and the 1 laminating process of cover half.
The working principle is as follows: it should be noted here that the elastic coefficient of the fourth spring 20 is much greater than that of the third spring 17, the chute is connected with the related ventilation equipment, the movable mold 5 is moved downwards, at this time, the contact rod 7 on the movable mold 5 contacts the fixed plate 8 first, so that the fixed plate 8 moves downwards, the fixed plate 8 drives the fixed rod 9 to move downwards, the second spring 15 on the fixed rod 9 is compressed by the first ring plate 10, the tapered sealing block on the fixed rod 9 blocks the ventilation channel, no gas flows out of the gas outlet channel 18, in this process, the ring pressing plate 12 contacts the ring ejecting plate 11, the ring ejecting plate 11 moves downwards, at this time, the third spring 17 is compressed, when the ring ejecting plate 11 contacts the bottom of the inner wall of the first annular groove, the fourth spring 20 is compressed until the top of the inner wall of the second annular groove of the ring pressing plate 12 contacts, at this time, the movable mold 5 and the fixed mold 1 finish the joint, and pour the injection molding material into the injection molding hole 6, after the molding, the movable mold 5 moves upwards, at the moment, the contact rod 7 is away from the fixed plate 8, the second spring 15 resets, the air channel is opened, air flows out from the air outlet channel 18 to jack the molded shell, then the fourth spring 20 resets to always prop against the ejection ring plate 11, and when the fourth spring 20 completely resets, the ejection molding block 14 can be ejected out of the shell in a secondary demolding mode until the pressing ring plate 12 is away from the ejection ring plate 11 and the third spring 17 resets.
The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides an injection mold with ejecting structure which characterized in that: including cover half (1), cover half (1) is direct to be become module (14) two parts by the mould platform with the middle part that is located the mould bench top and is constituteed, the air cavity is seted up to the inside of mould platform, the internally mounted of air cavity has seal assembly, gas outlet channel (18) that the equidistance distributes are seted up to the edge at shaping module (14) top, gas outlet channel (18) are linked together with the air cavity, the direction subassembly is installed to four corners at mould bench top, install movable mould (5) on the direction subassembly, the slide opening has all been seted up to the both sides at mould bench top, the both sides at movable mould (5) top all are fixed with contact bar (7), contact bar (7) slidable mounting is at the slide opening inner wall.
2. An injection mold having an ejection structure according to claim 1, wherein: the sealing assembly comprises a fixing rod (9) and a fixing ring plate, the fixing ring plate is fixed on the inner wall of the air cavity, a conical sealing head is fixed at the top of the fixing rod (9), an annular chamfer is formed in the inner wall of the air cavity, the conical sealing head is matched with the annular chamfer, a vertical air channel is formed in the inclined edge of the annular chamfer, and the peripheral wall of the fixing rod (9) is located at the bottom end and completely slides on the inner wall of the fixing ring plate.
3. An injection mold having an ejection structure according to claim 2, wherein: the sealing assembly further comprises a first annular plate (10), the first annular plate (10) is fixedly installed on the outer peripheral wall of the fixing rod (9), the first annular plate (10) is located right above the fixing ring plate, a second spring (15) is sleeved on the outer peripheral wall of the fixing rod (9), two ends of the second spring (15) are respectively in contact with the fixing annular plate and the first annular plate (10), the fixing plate (8) is fixed to the bottom of the fixing rod (9), the bottom of the die table is provided with a sliding groove, the air cavity and the sliding hole are communicated with the sliding groove, and the fixing plate (8) is slidably installed on the inner wall of the sliding groove.
4. An injection mold having an ejection structure according to claim 1, wherein: first ring channel is seted up along the circumference of shaping piece (14) at the top of mould platform, equidistant annular distribution first slip chamber has been seted up to the bottom of first ring channel inner wall, first guiding hole has been seted up to the bottom of first slip intracavity wall, first guiding hole slidable mounting has first guide bar (13), the periphery wall of first guide bar (13) is fixed with second crown plate (16), the periphery wall of first guide bar (13) is cup jointed and is installed third spring (17), the both ends of third spring (17) contact with the bottom of first slip intracavity wall and the bottom of second crown plate (16) respectively, the top of first guide bar (13) is fixed with ejecting crown plate (11).
5. An injection mold having an ejection structure according to claim 1, wherein: the middle part of the bottom of the movable mold (5) is provided with a molding cavity, the middle part of the top of the movable mold (5) is provided with an injection molding hole (6), and the injection molding hole (6) is communicated with the molding cavity.
6. An injection mold having an ejection structure according to claim 5, wherein: the second ring channel has been seted up along the shaping chamber edge to movable mould (5) bottom, equidistant annular distribution second sliding chamber has been seted up at the top of second ring channel inner wall, the second guiding hole has been seted up to the bottom of second sliding chamber inner wall, the inner wall slidable mounting of second guiding hole has second guide bar (19), the periphery wall of second guide bar (19) is fixed with third crown plate (21), fourth spring (20) have been cup jointed to the periphery wall of second guide bar (19), the both ends of fourth spring (20) contact with the top of second sliding chamber inner wall and the top of third crown plate (21) respectively, the bottom of second guide bar (19) is fixed with pressure crown plate (12).
7. An injection mold having an ejection structure according to claim 1, wherein: the direction subassembly includes guide post (2), and the entering chamber has all been seted up to four corners at mould bench top, and the bottom of guide post (2) is fixed in the bottom that gets into the chamber, and the periphery wall slidable mounting of guide post (2) has a location section of thick bamboo (4), and a location section of thick bamboo (4) and entering chamber looks adaptation, first spring (3) have been cup jointed to the periphery wall of guide post (2), and the both ends of first spring (3) contact with the top of mould bench and the bottom of a location section of thick bamboo (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122449906.XU CN216032271U (en) | 2021-10-12 | 2021-10-12 | Injection mold with ejection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122449906.XU CN216032271U (en) | 2021-10-12 | 2021-10-12 | Injection mold with ejection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216032271U true CN216032271U (en) | 2022-03-15 |
Family
ID=80607862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122449906.XU Expired - Fee Related CN216032271U (en) | 2021-10-12 | 2021-10-12 | Injection mold with ejection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216032271U (en) |
-
2021
- 2021-10-12 CN CN202122449906.XU patent/CN216032271U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220315 |