CN114571676A - Mould and structure for preventing surface reduction printing thereof - Google Patents
Mould and structure for preventing surface reduction printing thereof Download PDFInfo
- Publication number
- CN114571676A CN114571676A CN202210281013.5A CN202210281013A CN114571676A CN 114571676 A CN114571676 A CN 114571676A CN 202210281013 A CN202210281013 A CN 202210281013A CN 114571676 A CN114571676 A CN 114571676A
- Authority
- CN
- China
- Prior art keywords
- needle
- sleeve
- driving device
- boss column
- preventing surface
- 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.)
- Granted
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1785—Movement of a part, e.g. opening or closing movement of the mould, generating fluid pressure in a built-in fluid pressure generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of dies and discloses a die and a structure for preventing surface reduction printing of the die, wherein the structure for preventing surface reduction printing of the die comprises a driving device, a cylinder driving needle and a needle sleeve which are arranged in the die, a die cavity is formed in a die core, the driving device drives the cylinder driving needle and the needle sleeve to move together in the die cavity, the needle sleeve is sleeved outside the cylinder driving needle, the cylinder driving needle is used for abutting against the bottom of an axial hole of a boss column, and the needle sleeve is used for abutting against the end face of the boss column. According to the invention, the needle sleeve and the ejector pin jointly abut against the boss column, so that the shrinkage of the boss column can be transferred from the surface of a product to the back of the product, the surface reduction degree of the product corresponding to the boss column is reduced, the material thickness does not need to be increased, and the economic cost is reduced.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a die and a structure for preventing surface reduction printing of the die.
Background
At present, the problem of the offset of the surface of a mold product corresponding to a boss column is generally improved by increasing the local material thickness of the product near the boss column, but the method has limited improvement on the problem of the offset of the surface of the product, and the local material thickness is increased, so that the economic cost is higher.
Disclosure of Invention
The purpose of the invention is: the utility model provides a mould and structure of preventing surface reduction print thereof can reduce the surface reduction print degree that the product corresponds boss post department, need not to increase the material thickness, reduces economic cost.
In order to achieve the purpose, the invention provides a structure for preventing surface reduction printing, which comprises a driving device, a syringe needle and a needle sleeve, wherein the driving device, the syringe needle and the needle sleeve are arranged in a mould, a cavity is formed in a mould core, the driving device drives the syringe needle and the needle sleeve to move together in the cavity, the needle sleeve is sleeved outside the syringe needle, the syringe needle is used for abutting against the bottom of an axial hole of a boss column, and the needle sleeve is used for abutting against the end face of the boss column.
Optionally, the structure for preventing surface reduction printing further comprises a transmission device, and the driving device is connected with the ejector pin through the transmission device.
Optionally, the ejector sleeve needle comprises a needle core and a sleeve, the sleeve is sleeved outside the needle core, and the sleeve is sleeved outside the needle core.
Optionally, one end of the needle sleeve is sleeved outside the needle core, and the other end of the needle sleeve is sleeved outside the sleeve.
Optionally, the transmission device is a transmission block, a sliding groove which is obliquely arranged in the direction of the cavity is formed in the transmission block, and the driving device drives the transmission block to move linearly, so that the sleeve slides in the sliding groove, and the sleeve driver needle and the needle sleeve move together in the cavity.
Optionally, a first guide slide rail is further disposed on the side wall of the chute, a first guide groove adapted to the first guide slide rail is disposed on the sleeve, and the first guide slide rail can slide in the first guide groove.
Optionally, a second guide slide rail is further arranged on the transmission block, a second guide groove matched with the second guide slide rail is formed in the mold, and the second guide slide rail is used for sliding in the second guide groove.
Optionally, the outer diameter of the needle sleeve is smaller than the outer diameter of the boss column.
The invention also provides a mould comprising a structure for preventing surface sink printing as described in any of the preceding paragraphs.
The invention provides a mould and a structure for preventing surface reduction printing thereof, compared with the prior art, the mould has the advantages that:
the invention provides a structure for preventing surface reduction printing, which comprises a driving device, a cylinder ejecting needle and a needle sleeve, wherein the driving device, the cylinder ejecting needle and the needle sleeve are arranged in a mould, a cavity is formed in a mould core, the driving device drives the cylinder ejecting needle and the needle sleeve to move together in the cavity, the needle sleeve is sleeved outside the cylinder ejecting needle, the cylinder ejecting needle is used for abutting against the bottom of an axial hole of a boss column, and the needle sleeve is used for abutting against the end face of the boss column. Through setting up needle cover and department's section of thick bamboo needle and propping against the boss post jointly when the product is not solidified, exert the power towards the product surface to the boss post, can shift the shrink of boss post to the product back from the product surface, reduce the surface reduction print degree that the product corresponds boss post department, need not to increase the material thickness, reduce economic cost.
The invention also provides a die which comprises the die, so that the surface reduction printing degree of a product at the position corresponding to the boss column can be reduced, the material thickness does not need to be increased, and the economic cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a schematic illustration of a product of an embodiment of the invention.
FIG. 3 is a schematic representation of a structure and product that resists surface marking according to an embodiment of the present invention.
Fig. 4 is a schematic view of a slave cylinder needle and needle hub of an embodiment of the present invention.
Fig. 5 is a schematic view of a cavity of a mold according to an embodiment of the invention.
Fig. 6 is a schematic structural view of a transmission device according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a second guide groove according to an embodiment of the present invention.
In the figure, 1, a driving device; 2. a sleeve ejecting needle; 3. a needle sleeve; 4. a cavity; 5. a boss column; 6. an axial bore; 7. a transmission device; 8. a needle core; 9. a sleeve; 10. a chute; 11. a first guide rail; 12. a first guide groove; 13. a second guide rail; 14. a second guide groove; 15. a mold; 16. producing a product; 17. the surface of the product; 18. the back of the product.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, a structure for preventing surface recession according to a preferred embodiment of the present invention includes a driving device 1, an ejector pin 2 and a needle sheath 3 disposed in a mold 15, the mold core has a cavity 4, the driving device 1 drives the ejector pin 2 and the needle sheath 3 to move together in the cavity 4, the needle sheath 3 is sleeved outside the ejector pin 2, the ejector pin 2 is configured to abut against a bottom of an axial hole 6 of a boss column 5, and the needle sheath 3 is configured to abut against an end surface of the boss column 5.
According to the structure for preventing the surface sink mark, the needle sleeve 3 and the ejector pin 2 are arranged to abut against the boss column 5 together, a force towards the surface of a product is applied to the boss column, the product is not solidified at the moment, the resin material at the position of the boss column 5 is in a shrinkage stage of polymerization reaction, when the force transmitted by the needle sleeve 3 is received, the polymerization reaction at the position of the boss column 5 can be performed in a manner of being tightly attached to the surface 17 of the product, and the shrinkage is transferred to the back surface 18 of the product through the intervention of external force, so that the surface sink mark degree of the product 16 corresponding to the boss column 5 is reduced, the thickness of the material does not need to be increased, and the economic cost is reduced.
In the prior art, generally, in order to reduce the sink mark on the product surface 17, the thickness and shape of the material are increased or decreased, and the process conditions are adjusted, for example, the boss column is designed to be in a shape similar to a crater, the thickness around the boss column is increased, or the pressure holding time during injection molding is increased. This embodiment reduces the level of imprint on the product surface 17 by providing external forces to the uncured product and instead of reducing the imprint from the boss columns, transferring the imprint to the product back surface 18.
Fig. 2 shows the structure of the product 16, and the needle sheath 3 and the syringe needle 2 are against the boss column 5 together, which can prevent the product 16 from sticking to the core during the demolding process. Fig. 5 shows the relative positions of the cavity 4 and the sleeve needle 2.
Referring to fig. 4, the sleeve needle 2 includes a needle core 8 and a sleeve 9, the sleeve 9 is sleeved outside the needle core 8, and the needle sheath 3 is sleeved outside the needle core 8. Of course, in other embodiments, one end of the needle sheath 3 may be disposed outside the needle core 8, and the other end of the needle sheath 3 may be disposed outside the sleeve 9. When the sleeve 9 is driven by the drive means 1, the needle hub 3 will also move with the sleeve 9.
The needle core 8 can be sleeved with embedded parts, so that the surface of the boss column 5 is uniformly stressed, and the reduction influence on the back 18 of the product can be reduced.
The structure for preventing surface reduction printing of the embodiment further comprises a transmission device 7, and the driving device 1 is connected with the ejector pin 2 through the transmission device 7. In the present embodiment, it is preferred that,
the transmission device 7 is a transmission block, a sliding groove 10 which is obliquely arranged towards the direction of the cavity 4 is formed in the transmission block, and the driving device 1 drives the transmission block to move linearly, so that the sleeve 9 slides in the sliding groove 10 and the ejector pin 2 and the needle sleeve 3 move together in the cavity 4. When the driving device 1 drives the transmission block to move, the sleeve 9 can move towards the opening of the cavity 4 along with the guidance of the chute 10, and the needle sleeve 3 moves in the cavity 4 to move or reset towards the direction of the product.
A first guide sliding rail 11 is further arranged on the side wall of the sliding chute 10, a first guide groove 12 matched with the first guide sliding rail 11 is arranged on the sleeve 9, and the first guide sliding rail 11 can slide in the first guide groove. By providing the first guide slide and the first guide groove 12, the movement stability of the sleeve 9 can be improved, thereby providing uniform pressure for the boss column 5.
Referring to fig. 6 and 7, a second guide rail 13 is further disposed on the driving block, a second guide groove 14 adapted to the second guide rail 13 is disposed on the mold 15, and the second guide rail 13 is configured to slide in the second guide groove 14. Through setting up second direction slide rail and second direction recess 14, can improve the motion stability of driving block, provide even ground pressure for the boss post 5.
In this embodiment, the outer diameter of the needle hub 3 is smaller than the outer diameter of the boss column 5. In other embodiments, the outer diameter of the needle hub 3 may be the same as the outer diameter of the boss column 5, and may be set as desired for a particular manufacturing implementation.
The present embodiment also provides a mold 15 including the above-described structure for preventing surface sink printing.
In summary, the embodiment of the present invention provides a mold 15 and a structure for preventing surface mark reduction thereof, which can reduce the surface mark reduction degree of the product 16 corresponding to the boss column 5, without increasing the material thickness, and reduce the economic cost.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A structure for preventing surface reduction printing is characterized by comprising a driving device, a cylinder ejecting needle and a needle sleeve, wherein the driving device, the cylinder ejecting needle and the needle sleeve are arranged in a mold, a cavity is formed in the mold core, the driving device drives the cylinder ejecting needle and the needle sleeve to move together in the cavity, the needle sleeve is sleeved outside the cylinder ejecting needle, the cylinder ejecting needle is used for abutting against the bottom of an axial hole of a boss column, and the needle sleeve is used for abutting against the end face of the boss column.
2. The structure of claim 1, further comprising a transmission, wherein the driving device is connected to the ejector pin through the transmission.
3. The structure for preventing surface recession according to claim 2, wherein the ejector pin comprises a core pin and a sleeve, the sleeve is sleeved on the outside of the core pin, and the sleeve is sleeved on the outside of the core pin.
4. The structure for preventing surface recession according to claim 3, wherein one end of the needle sheath is sleeved on the outside of the needle core, and the other end of the needle sheath is sleeved on the outside of the sleeve.
5. The structure for preventing surface from being imprinted according to claim 3, wherein the transmission device is a transmission block, a sliding groove is formed in the transmission block and is inclined towards the direction of the cavity, the driving device drives the transmission block to move linearly, so that the sleeve slides in the sliding groove, and the ejector needle and the needle sleeve move together in the cavity.
6. The structure for preventing surface reduction printing according to claim 5, wherein a first guiding slide rail is further arranged on the side wall of the sliding chute, a first guiding groove matched with the first guiding slide rail is arranged on the sleeve, and the first guiding slide rail can slide in the first guiding groove.
7. The structure of claim 5, wherein the driving block is further provided with a second guiding rail, the mold is provided with a second guiding groove adapted to the second guiding rail, and the second guiding rail is configured to slide in the second guiding groove.
8. The structure of claim 1, wherein the outer diameter of the needle sleeve is smaller than the outer diameter of the boss column.
9. A mold comprising the surface anti-mark structure as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281013.5A CN114571676B (en) | 2022-03-22 | 2022-03-22 | Mould and prevent structure of surface shrink seal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281013.5A CN114571676B (en) | 2022-03-22 | 2022-03-22 | Mould and prevent structure of surface shrink seal thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114571676A true CN114571676A (en) | 2022-06-03 |
| CN114571676B CN114571676B (en) | 2024-01-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210281013.5A Active CN114571676B (en) | 2022-03-22 | 2022-03-22 | Mould and prevent structure of surface shrink seal thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114571676B (en) |
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| US4935191A (en) * | 1986-10-16 | 1990-06-19 | Thomas W. Johnson | Process of insection molding with pressurized gas assist |
| JPH0976306A (en) * | 1995-09-14 | 1997-03-25 | Mitsubishi Rayon Co Ltd | Resin molding tool, molding method, and molding |
| JP2003011168A (en) * | 2001-07-04 | 2003-01-15 | Sumitomo Heavy Ind Ltd | Screw member molding apparatus |
| CN201325149Y (en) * | 2008-12-30 | 2009-10-14 | 深圳创维－Rgb电子有限公司 | Sink-mark prevention mechanism of injection mold |
| DE102008018514A1 (en) * | 2008-04-12 | 2009-10-15 | Voss Automotive Gmbh | A method for producing a shaped article with annular cross-section and molding according to such a method |
| WO2011006704A1 (en) * | 2009-07-13 | 2011-01-20 | Evonik Röhm Gmbh | Device and method for producing thick-walled plastic molded parts having reduced shrinkage sites by injection molding or embossing |
| CN204869511U (en) * | 2015-08-06 | 2015-12-16 | 北京隆轩橡塑有限公司 | Injection mold with ftercompction feeding function thimble device |
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2022
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| JPH0976306A (en) * | 1995-09-14 | 1997-03-25 | Mitsubishi Rayon Co Ltd | Resin molding tool, molding method, and molding |
| JP2003011168A (en) * | 2001-07-04 | 2003-01-15 | Sumitomo Heavy Ind Ltd | Screw member molding apparatus |
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| Publication number | Publication date |
|---|---|
| CN114571676B (en) | 2024-01-05 |
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