CN113650227B - Double-color mold with movable elastic needle - Google Patents
Double-color mold with movable elastic needle Download PDFInfo
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- CN113650227B CN113650227B CN202110881610.7A CN202110881610A CN113650227B CN 113650227 B CN113650227 B CN 113650227B CN 202110881610 A CN202110881610 A CN 202110881610A CN 113650227 B CN113650227 B CN 113650227B
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- slider
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- elastic
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- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1675—Making multilayered or multicoloured articles using exchangeable mould halves
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- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
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- 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
- B29C45/2681—Moulds with rotatable 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1681—Making multilayered or multicoloured articles one layer penetrating at one or more areas through another layer
-
- 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
- B29C2045/2683—Plurality of independent mould cavities in a single mould
- B29C2045/2685—Plurality of independent mould cavities in a single mould filled with different materials
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- 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
- B29C2045/2683—Plurality of independent mould cavities in a single mould
- B29C2045/2691—Plurality of independent mould cavities in a single mould sequentially filled
-
- 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
- B29C45/332—Mountings or guides therefor; Drives therefor
- B29C2045/334—Mountings or guides therefor; Drives therefor several transversely movable mould parts driven by a single drive means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a double-color die with a movable spring needle, which comprises a die front die and a die rear die, wherein the die front die comprises a front injection slider die and a front injection slider die, the die rear die comprises a rear slider die, the rear slider die comprises a slider seat, a slider insert, a movable spring needle and a spring needle plate, the slider insert is arranged on one side of the slider seat, a through hole is formed in the slider insert, the spring needle plate is arranged on the other side of the slider seat, a slider spring is arranged between the spring needle plate and the slider seat, one end of the movable spring needle is arranged on one side of the spring needle plate, the other end of the movable spring needle extends into the through hole, an extending section is arranged on the other side of the spring needle plate, the front injection slider die comprises a first slider wedge block, a pressing surface is arranged on the side wall of the first slider wedge block, the front die comprises a second slider wedge block, and a clearance hole is formed in the side wall of the second slider wedge block.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a double-color die with movable elastic needles.
Background
Two-color injection molding is the most complex and representative one of multi-component injection molding processes. The basic principle is as follows: after the injection of each component material, the partially formed product remains in the mold cavity and moves with the mold in some way (i.e., semi-finished product transfer technique) to the next station, followed by subsequent injection molding of the component material and finally cooling and solidifying to obtain the whole product. The forming process has the advantages that: the partially formed article does not require a subsequent injection of the next component material out of the original mold and into another mold. Thus, the molding process can effectively reduce the injection molding cycle time and can produce a multi-colored article having more components.
At present, a plurality of automobile injection molding parts adopt a double-color injection molding process, generally adopt a secondary injection molding form, and a first color product is molded after primary injection molding and then a second color injection molding is carried out to form a double-color product. For example, a mobile phone box shell in an automobile is manufactured by a double-shot injection molding process, soft glue outside the mobile phone box shell is subjected to first injection molding, and hard glue inside the mobile phone box shell is subjected to second injection molding, but in the injection molding mode, the side bonding force of the soft glue and the hard glue of the finally-molded mobile phone box shell is not strong, and the mobile phone box shell is easy to fall off and has defects.
Disclosure of Invention
Aiming at the defects of the prior art, the double-color die with the movable elastic needle is provided, the structural design is reasonable, the binding force of the final product is strong, and the final product is not easy to separate.
In order to achieve the above object, the present invention provides the following technical solutions.
A double-color mold with a movable bullet needle comprises a mold front mold, a mold rear mold and a driving element for driving the mold rear mold to rotate, wherein the mold front mold comprises a slider injection front mold and a slider injection front mold, the mold rear mold comprises a slider rear mold, a space for the slider rear mold to move in is formed between the slider injection front mold and the slider injection front mold, the slider rear mold comprises a slider seat, a slider insert, the movable bullet needle and a bullet needle plate, the slider seat is mounted on the mold rear mold, the slider insert is arranged on one side of the slider seat and used for forming the side edge of a product, the slider insert is provided with a through hole, the bullet needle plate is arranged on the other side of the slider seat, a slider spring is arranged between the bullet needle plate and the slider seat, one end of the movable bullet needle is mounted on one side of the bullet needle plate, and the other end of the movable bullet needle passes through the slider seat and extends into the through hole of the slider insert, the other side of the ejector pin plate is provided with an extending section, the first ejector slide block front die comprises a first slide block wedging block, the side wall of the first slide block wedging block is provided with a pressing surface, the pressing surface is arranged in an inclined manner, the second ejector slide block front die comprises a second slide block wedging block, the side wall of the second slide block wedging block is provided with an avoiding hole, during injection molding, a die is closed for one-time ejection, the slide block rear die is matched with the first ejector slide block front die, the first slide block wedging block is matched with the slide block seat, the pressing surface is abutted against the extending section, the movable ejection pin is pushed to move axially by an ejection pin plate compression ejection block spring and extends out of the through hole, a mounting hole is formed in a product, the die is opened once, the first ejector slide block front die is separated from the slide block rear die, the slide block spring resets to drive the movable ejection pin to retract into the through hole, and the drive element to drive the die rear die to rotate, and (3) carrying out secondary injection by secondary die assembly of the die, matching the slider rear die with a secondary injection slider front die at the moment, and enabling the avoidance hole in the second slider wedging block to correspond to the extension section, so that the second slider wedging block cannot push the movable elastic needle to move, and the movable elastic needle is kept in the through hole, so that a positioning block which extends into the mounting hole can be formed on a product.
The invention has the beneficial effects that: according to the die structure, during injection molding, the die is closed, the rear slider die is matched with the front ejection slider die, namely the first slider wedge block is matched with the slider seat, the pressing surface abuts against the extending section, so that the ejection pin plate is pushed to move, when the ejection pin plate moves, the movable ejection pin is driven to axially move, so that the movable ejection pin extends out of the through hole and enters the injection molding cavity, therefore, when hard rubber is formed through one-time injection, due to the existence of the movable ejection pin in the injection molding cavity, a mounting hole can be formed in a product, when the die is opened for one time, the front ejection slider die is separated from the rear slider die, the pressing surface does not abut against the extending section, so that the spring resets and the ejection pin plate resets, so that the movable ejection pin retracts into the through hole, the rear die is driven to rotate 180 degrees through the driving element, secondary die closing is performed for second-shot molding, at the moment, the rear slider die is matched with the front ejection slider die, the avoiding hole on the second slider wedge block corresponds to the extending section, namely, the extending into the avoiding hole is matched with the inner layer of the mounting hole, so that the flexible rubber layer of the flexible rubber layer is not easily separated from the inner layer of the mounting hole, and the inner layer of the flexible rubber layer of the mounting block.
The two-shot sliding block front mold further comprises a sliding block spring block, a spring block pressing plate and a spring block spring, wherein the spring block pressing plate is fixedly installed in the groove, the sliding block spring block is movably arranged in the groove, a contact part is arranged on the sliding block spring block, a through groove matched with the contact part is formed in the spring block pressing plate, the spring block spring is arranged in the groove and abutted against the sliding block spring block, so that the contact part extends out of the through groove, a mold opening groove is formed in the sliding block seat, the mold opening groove is obliquely arranged, the contact part is firstly matched with the outer side wall of the mold opening groove in the secondary mold closing process of the mold, the sliding block spring block compresses the spring block spring to drive the contact part to retract, when the sliding block spring block moves into the mold opening groove, the spring block spring resets, the contact part is driven by the sliding block spring block to penetrate through the through groove and extend into the mold opening groove, and when the mold is opened for the secondary mold, the front mold drives the second sliding block wedge block to move forwards, and the contact part is matched with the mold opening groove to drive the mold seat to perform core pulling. Through the improvement, when the mold is closed for the second time, the sliding block elastic block cannot interfere with the sliding block seat, and when the mold is opened for the second time, the sliding block elastic block can drive the sliding block seat to transversely move to pull the core.
As an improvement of the invention, the side wall of the front side of the contact part is provided with an elastic block inclined guide surface, the outer side wall of the die opening groove is provided with a slider seat inclined surface, and the elastic block inclined guide surface is contacted with the slider seat inclined surface in the secondary die closing process of the die. Through the improvement, the contact part is pushed to move when the mold is closed for the second time.
As an improvement of the present invention, the inner side wall of the mold opening groove is a plane, the side wall at the rear side of the contact portion is a plane, and when the mold is opened for the second time, the rear side wall of the contact portion is in contact with the inner side wall of the mold opening groove. Through the improvement, when the mold is opened for the second time, the contact part can drive the sliding block seat to transversely move for core pulling.
As an improvement of the invention, an installation cavity is formed on the side wall of the slider seat, the elastic needle plate is arranged in the installation cavity, a cover plate for closing the installation cavity is further arranged on the slider seat, and an extending hole for extending the movable elastic needle is formed in the cover plate. Through the improvement, the excessive movement of the needle springing plate can be avoided.
As an improvement of the present invention, an installation groove is formed in a side wall of the first slider wedging block, a slider adjustment block is installed in the installation groove, and the pressing surface is disposed on the slider adjustment block.
The end of the movable spring needle is convexly provided with a step part, and the step part extends out of the through hole when the mold is secondarily closed for secondary injection. Through the improvement, the formed mounting hole is a stepped hole, the positioning block is stepped, and the inner layer soft rubber part and the outer layer hard rubber part are combined more strongly.
Drawings
FIG. 1 is a schematic diagram of a mold back of the present invention.
Fig. 2 is a schematic view of the structure of the front mold of the present invention.
FIG. 3 is a schematic diagram of the combination of a one-shot slider front mold, a two-shot slider front mold structure and a slider back mold of the present invention.
Fig. 4 is an exploded view of the slider back mold of the present invention.
FIG. 5 is a schematic view of the slider holder structure of the present invention.
Fig. 6 is a schematic view of the movable bullet needle structure of the present invention.
FIG. 7 is an exploded view of a front mold of a slide injector according to the present invention.
FIG. 8 is an exploded view of the two-shot slider front mold of the present invention.
Fig. 9 is a schematic view of the slider bullet structure of the present invention.
FIG. 10 is a schematic view of a one-shot slider front mold and a slider back mold configuration of the present invention.
Fig. 11 is a schematic cross-sectional view of fig. 10 of the present invention.
FIG. 12 is a schematic diagram of the two shot slider front mold and slider back mold configuration of the present invention.
Fig. 13 is a schematic cross-sectional view of fig. 12 of the present invention.
Figure 14 is a schematic representation of the structure of the outer layer of the product of the present invention.
Fig. 15 is a schematic view of the inner layer structure of the product of the present invention.
Fig. 16 is a schematic view of the overall structure of the product of the present invention.
In the figure, 1, a slide block rear die; 1.1, a slider seat; 1.11, mounting a cavity; 1.12, opening a die cavity; 1.13, oblique guide surfaces of the sliding block seat; 1.2, a slide block insert; 1.21, a through hole; 1.3, moving the elastic needle; 1.31, step part; 1.4, a needle springing plate; 1.5, a slider spring; 1.6, an extension section; 1.7, a cover plate; 2. a front mold for injecting the slide block; 2.1, a first slide block wedging block; 2.2, adjusting a sliding block; 2.21, pressing surface; 3. a secondary injection sliding block front mold; 3.1, a second slide block wedging block; 3.11, avoiding holes; 3.2, grooves; 3.3, a slide block and a spring block; 3.31, a contact part; 3.32, an elastic block inclined guide surface; 3.4, pressing a spring block; 3.41, a through groove; 3.5, a spring block spring; 4. an outer layer of the product; 4.1, mounting holes; 5. a product inner layer; 5.1, positioning blocks; 5.2, notches.
Detailed Description
The invention is further explained by combining the attached drawings.
Referring to fig. 1 to 16, a two-color mold with a movable spring pin 1.3 includes a front mold, a rear mold and a driving element for driving the rear mold to rotate, the front mold includes a front mold 2 for a first injection slide and a front mold 3 for a second injection slide, the rear mold includes a rear mold 1 for a slide, a space for the rear mold 1 to move into is provided between the front mold 2 for the first injection slide and the front mold 3 for the second injection slide, and when the mold is closed, the rear mold 1 for the slide is located between the front mold 2 for the first injection slide and the front mold 3 for the second injection slide.
Referring to fig. 4 to 6, the rear slider mold 1 includes a slider seat 1.1, a slider insert 1.2, a movable pogo pin 1.3, and a pogo pin plate 1.4, the slider seat 1.1 is slidably mounted on the rear mold of the mold, the slider insert 1.2 is disposed on one side of the slider seat 1.1 for forming a molding side of a product during injection molding, a through hole 1.21 is disposed on the slider insert 1.2, the pogo pin plate 1.4 is disposed on the other side of the slider seat 1.1, a mounting cavity 1.11 and a cover plate 1.7 closing an opening of the mounting cavity 1.11 are formed on the side of the slider seat 1.1, a slider spring 1.5 is disposed between the pogo pin plate 1.4 and the slider seat 1.1, the pogo pin plate 1.4 and the slider spring 1.5 are disposed in the mounting cavity 1.11, the slider spring 1.5 is located in the mounting cavity 1.11, one end of the slider spring 1.5 abuts against an inner wall of the mounting cavity 1.11, the other end of the slider spring 1.5 abuts against the pogo pin plate 1.4, the movable pogo pin plate 1.3, and the other end of the movable pogo pin seat 1.1.1 is smaller than the diameter of the pin seat 1.1.1.1.1.1.1.1, and the pin plate 1.1.1.1.1, and the movable pogo pin plate 1.3, and the pin plate 1.1.1 is smaller than the pin plate 1.3, and the pin plate 1.1.1.1.1, the movable pogo pin plate 1.1.1.1.3. The opposite side of bullet needle board 1.4 is equipped with stretch out section 1.6, and stretch out section 1.6 and be the column, specifically speaking, stretch out section 1.6 and activity bullet needle 1.3 and can be integrative, stretch out section 1.6 and activity bullet needle 1.3 and also can be the components of a whole, and in this embodiment, stretch out section 1.6 and activity bullet needle 1.3 and be the components of a whole. Be equipped with the hole that stretches out that supplies to stretch out section 1.6 and stretch out on apron 1.7, stretch out section 1.6 and pass and stretch out the hole, through setting up apron 1.7, can make the faller board 1.4 remove in installation cavity 1.11 moreover, avoid deviating from.
The inboard of slider seat 1.1 is equipped with die cavity 1.12, die cavity 1.12 is the slope setting, the lateral wall of die cavity 1.12 is equipped with slider seat 1.1 inclined plane, and the inside wall of die cavity 1.12 is the plane.
Referring to fig. 7, the one-shot slider front mold 2 includes a first slider wedging block 2.1, a pressing surface 2.21 is provided on a side wall of the first slider wedging block 2.1, the pressing surface 2.21 is disposed in an inclined manner, specifically, a mounting groove is provided on a side wall of the first slider wedging block 2.1, a slider adjusting block 2.2 is mounted in the mounting groove, the pressing surface 2.21 is provided on a side surface of the slider adjusting block 2.2, and the slider adjusting block 2.2 and the first slider wedging block 2.1 are disposed in a split manner, so that an inclination angle of the pressing surface 2.21 can be adjusted conveniently.
Referring to fig. 8 to 10, the two-shot sliding block front mold 3 includes a second sliding block wedging block 3.1, a side wall of the second sliding block wedging block 3.1 is obliquely arranged and is provided with an avoiding hole 3.11, and a size of the avoiding hole 3.11 is matched with a size of the extending section 1.6.
The left side surface and the right side surface of the second slider wedge-caulking block 3.1 are respectively provided with a groove 3.2, the second ejection slider front die 3 further comprises a slider elastic block 3.3, an elastic block pressing plate 3.4 and an elastic block spring 3.5, the elastic block pressing plate 3.4 is fixedly installed in the groove 3.2, the slider elastic block 3.3 is movably arranged in the groove 3.2, one end of the elastic block spring 3.5 is abutted against the inner wall of the groove 3.2, the other end of the elastic block spring 3.5 is abutted against the side wall of the slider elastic block 3.3, the other side of the slider elastic block 3.3 is convexly provided with a contact part 3.31, the elastic block pressing plate 3.4 is provided with a through groove 3.41 matched with the contact part 3.31, the elastic block spring 3.5 pushes the contact part 3.31 to extend out of the through groove 3.41, in the embodiment, the contact part 3.31 and the slider elastic block 3.3.3 are in an integrally formed structure, the side wall of the front side of the contact part 3.31 is provided with an inclined guide surface 3.32, and the side wall of the rear side wall is a plane.
Referring to fig. 10 to 11, during injection molding, an upper die and a lower die of the die are firstly closed to perform a hard glue injection, at this time, the rear slider die 1 is matched with a front slider injection die 2, and the rear slider die 1 and the front slider injection die 2 drive the first slider wedge 2.1 to gradually move relative to the slider seat 1.1 in the process of closing the die, so that the pressing surface 2.21 abuts against the extending section 1.6, thereby pushing the extending section 1.6 to move, driving the elastic needle plate 1.4 to compress the elastic spring 3.5 and pushing the movable elastic needle 1.3 to move axially and extend out of the through hole 1.21, and at this time, the end of the movable elastic needle 1.3 extends into the injection molding cavity, so that when the hard glue portion of the outer layer 4 of the product is molded in the injection molding cavity, due to the existence of the end of the movable elastic needle 1.3, a mounting hole 4.1 is formed in the hard glue of the outer layer 4 of the product, and due to the end of the elastic needle 1.3, the mounting hole 4.1 is a stepped hole.
After the injection is finished, the mold is opened at one time, the injection slide block front mold 2 is separated from the slide block rear mold 1, the slide block spring 1.5 is reset to drive the movable elastic needle 1.3 to retract into the through hole 1.21, the step part 1.31 is positioned outside the through hole 1.21, and then the mold rear mold is driven to rotate 180 degrees through the driving element.
Referring to fig. 12 to 13, the upper die and the lower die of the die are closed for secondary mold closing to perform secondary injection of soft plastic, at this time, the rear die 1 of the slider is matched with the front die 3 of the secondary injection slider, the rear die 1 of the slider and the front die 3 of the secondary injection slider drive the second slider wedge-caulking block 3.1 to gradually move relative to the slider seat 1.1 in the mold closing process, due to the existence of the contact part 3.31, the contact part 3.31 is firstly contacted with the outer side wall of the open die cavity 1.12 when moving, due to the existence of the contact part 3.31, the front side of the contact part 3.31 is provided with the elastic block inclined guide surface 3.32, the outer side wall of the open die cavity 1.12 is provided with the slider seat 1.1 inclined surface, when the elastic block inclined guide surface 3.32 is matched with the slider seat 1.1 inclined surface, the contact part 3.31 is convenient to drive the slider elastic block 3.3 to compress the elastic block spring 3.5 to move, so that the contact part 3.31 gradually retracts into the through groove 3.41, thereby avoiding the rigid contact part 3.31 from contacting with the outer side wall of the open die cavity 1.12, when the contact part 3.3.31 moves to the open die cavity, the elastic block 3.12, and the elastic block is moved to drive the elastic block 3.3.31 to disappear, and the elastic block 3.41, and the elastic block to move, thereby the elastic block to move the elastic block to the open die cavity, and the elastic block.
Meanwhile, as the avoiding hole 3.11 on the second slider wedging block 3.1 corresponds to the extending section 1.6, the extending section 1.6 can extend into the avoiding hole 3.11, so that the elastic needle plate 1.4 can not be pushed to move, the movable elastic needle 1.3 can be kept in the through hole 1.21, the step part 1.31 is positioned outside the through hole 1.21 and in the injection molding cavity, and a soft rubber part can be formed in the through hole 1.21, at the time, when the inner layer 5 soft rubber part of the product is formed in the injection molding cavity, the positioning block 5.1 can be formed at the mounting hole 4.1 of the outer layer 4 hard rubber of the product due to the existence of the step part 1.31, the bonding force between the outer layer 4 hard rubber of the product and the inner layer soft rubber is increased through the matching of the positioning block 5.1 and the mounting hole 4.1, the separation is not easy to occur, and the mounting hole 4.1 is a stepped hole, so that the formed positioning block 5.1 is stepped hole, and the bonding is firmer. Due to the existence of the step part 1.31, the notch 5.2 is formed on the end surface of the positioning block 5.1 during molding, and the step part 1.31 is positioned in the notch 5.2.
After the second shot of flexible glue is accomplished, the mould carries out the secondary die sinking, drives second slider wedge piece 3.1 and removes, and the mould front mould drives second slider wedge piece 3.1 antedisplacement, and the in-process that second slider wedge piece 3.1 antedisplacement, contact site 3.31 and open-die cavity 1.12's cooperation drive slider seat 1.1 sideslip to drive activity bullet needle 1.3 and remove, loose core makes ladder portion 1.31 shift out from notch 5.2, so that the product takes out smoothly from the injection molding die cavity, can not take place to interfere. And because the inside wall of die cavity 1.12 is the plane, the lateral wall of the rear side of contact portion 3.31 is the plane, and the rear side lateral wall of contact portion 3.31 contacts with the inside wall of die cavity 1.12, can guarantee that slider seat 1.1 is the sideslip steadily.
After the secondary die opening, the driving element drives the rear die of the die to rotate 180 degrees, and the die is closed again to perform hard glue injection, and the steps are repeated.
In the die structure, when the die is subjected to one-shot injection, the movable elastic needle 1.3 is pushed to move out of the injection molding cavity through the pressing surface 2.21 on the first slide block wedge block 2.1 during one-shot die assembly, so that the mounting hole 4.1 can be formed on the hard glue on the outer layer 4 of the product, when the die is subjected to the second-shot injection, the extension section 1.6 can move into the avoiding hole 3.11 during the second-shot die assembly, so that the movable elastic needle 1.3 retracts into the through hole 1.21, the positioning block 5.1 can be formed on the mounting hole 4.1 by the soft glue part on the inner layer 5 of the product, and simultaneously, because the soft glue part can be formed in the through hole 1.21 and the step part 1.31 extends out of the die cavity, the movable elastic needle 1.3 needs to be subjected to core pulling, so that the product can be smoothly demoulded, consequently, set up slider bullet piece 3.3 for the mould is when the secondary die sinking, and the mould front mould drives second slider wedge piece 3.1 antedisplacement, and the in-process that second slider wedge piece 3.1 antedisplacement drives through the cooperation of contact site 3.31 with die cavity 1.12 slider seat 1.1 sideslip to loose core, and because the existence of slider bullet piece 3.3, consequently set up bullet piece spring 3.5, make the mould when the secondary die sinking, contact site 3.31 drives slider bullet piece 3.3 compression bullet piece spring 3.5 and removes, make contact site 3.31 retract in to leading to groove 3.41 gradually, avoid taking place the rigid contact between the lateral wall of contact site 3.31 and die cavity 1.12, and structural design is reasonable, and injection moulding and drawing of patterns are convenient, and the product cohesion after the shaping is strong, is difficult for droing.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a double-colored mould of area activity bullet needle, includes mould front mould, mould back mould, the mould front mould includes that one penetrates the slider front mould and two penetrate the slider front mould, mould includes mould, its characterized in that behind the slider behind the mould: the rear sliding block die comprises a sliding block seat, a sliding block insert, a movable elastic needle and an elastic needle plate, the sliding block insert is arranged on one side of the sliding block seat and used for forming the side edge of a product model, a through hole is formed in the sliding block insert, the elastic needle plate is arranged on the other side of the sliding block seat, a sliding block spring is arranged between the elastic needle plate and the sliding block seat, one end of the movable elastic needle is arranged on one side of the elastic needle plate, the other end of the movable elastic needle penetrates through the sliding block seat and extends into the through hole of the sliding block insert, an extending section is arranged on the other side of the elastic needle plate, the front first sliding block die comprises a first sliding block wedging block, a pressing surface is arranged on the side wall of the first sliding block wedging block, the front second sliding block die comprises a second sliding block wedging block, and an avoiding hole is formed in the side wall of the second sliding block wedging block,
when the injection molding is carried out, the mold is closed once to carry out first injection, at the moment, the rear slide block mold is matched with the front slide block injection mold, the first slide block wedge block is matched with the slide block seat to enable a compression surface to be abutted against the extension section, the elastic block spring is compressed by the elastic needle plate to push the movable elastic needle to move axially and extend out of the through hole, a mounting hole is formed in the outer layer of a product, the mold is opened once, the front slide block injection mold is separated from the rear slide block mold, the slide block spring resets to drive the movable elastic needle to retract into the through hole, the rear mold of the mold is driven to rotate by the driving element, secondary mold closing is carried out for second injection, at the moment, the rear slide block mold is matched with the front slide block injection mold, the avoidance hole in the second slide block wedge block corresponds to the extension section, the extension section extends into the avoidance hole, the second slide block wedge block cannot push the movable elastic needle to extend out of the through hole, and a positioning block extending into the mounting hole can be formed in the inner layer of the product.
2. The double-color mold with the movable elastic needle as claimed in claim 1, wherein: the side surface of the second slide block wedging block is provided with a groove, the front mold of the second injection slide block also comprises a slide block elastic block, an elastic block pressing plate and an elastic block spring, the elastic block pressing plate is fixedly arranged in the groove, the slide block elastic block is movably arranged in the groove, the slide block elastic block is provided with a contact part, the elastic block pressing plate is provided with a through groove matched with the contact part, the elastic block spring is arranged in the groove and is abutted against the slide block elastic block, so that the contact part extends out of the through groove, the slide block seat is provided with a mold opening groove which is arranged in an inclined way,
in-process of mould secondary compound die, the contact site earlier with the cooperation of die cavity lateral wall, slider bullet piece compression bullet piece spring drives the contact site and contracts back, when slider bullet piece removed to die cavity inside, bullet piece spring resets, drives the contact site through slider bullet piece and passes logical inslot and stretch into the die cavity, when the mould secondary die sinking, the mould front mould drives second slider wedge piece antedisplacement, and the in-process of second slider wedge piece antedisplacement drives through the cooperation of contact site with the die cavity slider seat sideslip to loose core.
3. The double-color mold with the movable elastic needle as claimed in claim 2, wherein: the side wall of the front side of the contact part is provided with an elastic block inclined guide surface, the outer side wall of the die opening groove is provided with a sliding block seat inclined surface, and the elastic block inclined guide surface is in contact with the sliding block seat inclined surface in the secondary die closing process of the die.
4. The double-color mold with the movable spring needle as claimed in claim 2, characterized in that: the inside wall of the die cavity is a plane, the side wall of the rear side of the contact part is a plane, and when the die is opened for the second time, the side wall of the rear side of the contact part is in contact with the inside wall of the die cavity.
5. The double-color mold with the movable elastic needle as claimed in claim 1, wherein: be formed with the installation cavity on the lateral wall of take-up housing, bullet needle board sets up in the installation cavity, still install on the take-up housing and be used for sealing the apron of installation cavity, be equipped with the hole that stretches out that supplies the activity bullet needle to stretch out on the apron.
6. The double-color mold with the movable spring needle as claimed in claim 1, characterized in that: the lateral wall of first slider wedging piece is equipped with the mounting groove, install the slider adjusting block in the mounting groove, the compact surface set up in on the slider adjusting block.
7. The double-color mold with the movable elastic needle as claimed in claim 1, wherein: the end part of the movable spring needle is convexly provided with a step part, and when the mold is secondarily closed to carry out secondary injection, the step part extends out of the through hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110881610.7A CN113650227B (en) | 2021-08-02 | 2021-08-02 | Double-color mold with movable elastic needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110881610.7A CN113650227B (en) | 2021-08-02 | 2021-08-02 | Double-color mold with movable elastic needle |
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| CN113650227A CN113650227A (en) | 2021-11-16 |
| CN113650227B true CN113650227B (en) | 2023-02-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114311507B (en) * | 2021-12-17 | 2024-02-20 | 苏州优耐鑫模具科技有限公司 | Double-colored multicavity rotary injection mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207415890U (en) * | 2017-11-20 | 2018-05-29 | 东莞市欧若拉精密塑料制品有限公司 | Double color mould core-pulling mechanism and mold |
| CN109352903A (en) * | 2018-11-15 | 2019-02-19 | 创意塑胶工业（苏州）有限公司 | A kind of double-color mold preventing the viscous preceding mould of product |
| CN110919990A (en) * | 2019-12-30 | 2020-03-27 | 青岛海泰科模具有限公司 | Internal-drawing type double-color injection mold |
-
2021
- 2021-08-02 CN CN202110881610.7A patent/CN113650227B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207415890U (en) * | 2017-11-20 | 2018-05-29 | 东莞市欧若拉精密塑料制品有限公司 | Double color mould core-pulling mechanism and mold |
| CN109352903A (en) * | 2018-11-15 | 2019-02-19 | 创意塑胶工业（苏州）有限公司 | A kind of double-color mold preventing the viscous preceding mould of product |
| CN110919990A (en) * | 2019-12-30 | 2020-03-27 | 青岛海泰科模具有限公司 | Internal-drawing type double-color injection mold |
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| CN113650227A (en) | 2021-11-16 |
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Effective date of registration: 20230117 Address after: No. 21, Fuyuan Road, Wuqing Development Zone, Tianjin New Technology Industrial Park, Wuqing District, Tianjin 301700 Applicant after: Junsheng Qunying (Tianjin) Automobile Accessories Co.,Ltd. Address before: No. 1266, Juxian Road, hi tech Zone, Ningbo, Zhejiang Province, 315000 Applicant before: NINGBO JUNSHENG QUNYING AUTOMOBILE SYSTEM Co.,Ltd. |
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