CN222886188U - Injection mold with stable material feeding - Google Patents
Injection mold with stable material feeding Download PDFInfo
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- CN222886188U CN222886188U CN202421487910.2U CN202421487910U CN222886188U CN 222886188 U CN222886188 U CN 222886188U CN 202421487910 U CN202421487910 U CN 202421487910U CN 222886188 U CN222886188 U CN 222886188U
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Abstract
The application relates to an injection mold with stable blanking, which comprises a front mold and a rear mold, wherein the front mold is used for being installed at an injection port of an injection molding machine, the front mold comprises a panel and an a plate arranged on the panel, the rear mold comprises a bottom plate, a mold foot arranged on the bottom plate and a b plate arranged on the mold foot, an ejection mechanism is arranged on the bottom plate and comprises a bottom needle plate, a surface needle plate arranged on the bottom needle plate and a thimble arranged on the surface needle plate, an ejection hole for the thimble plate to pass through is formed in the b plate, a backlog hole is formed in the bottom plate and is used for a push rod on the injection molding machine to pass through and push the bottom needle plate, a return needle is arranged on the surface needle plate and is positioned at two ends of the surface needle plate in the length direction, a reset hole for the return needle to pass through is formed in the b plate, and the distance between the return needle and the surface needle plate is larger than the distance between the thimble and the surface needle plate. The application has the effect of stably resetting the ejector pin to improve the blanking stability.
Description
Technical Field
The application relates to the field of injection molds, in particular to an injection mold with stable blanking.
Background
The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions. Injection molding is a process used in mass production of parts of complex shape. Specifically, the heated and melted plastic is injected into a die cavity under high pressure by an injection molding machine, and a formed product is obtained after cooling and solidification.
The blanking of common mould is realized through the thimble, and the spring is adopted to reset to the faller of thimble mostly, but ordinary spring is generally applicable to small-size mould, and the nitrogen spring is then needed to the reset of large-size mould, and nevertheless the manufacturing cost of nitrogen spring is higher, does not bear high temperature, and the installation requirement is higher, consequently, needs an economic and efficient structure in order to make the faller reset.
Disclosure of utility model
In order to enable the ejector pin to reset in time so as to improve the blanking stability, the application provides an injection mold with stable blanking.
The application provides an injection mold with stable blanking, which adopts the following technical scheme:
The front die comprises a panel and an a plate arranged on the panel, the rear die comprises a bottom plate, a die foot arranged on the bottom plate and a b plate arranged on the die foot, an ejection mechanism is arranged on the bottom plate and comprises a bottom needle plate, a surface needle plate arranged on the bottom needle plate and a thimble arranged on the surface needle plate, an ejection hole for the thimble plate to pass through is formed in the b plate, a backlog hole is formed in the bottom plate and used for the mandril on the injection molding machine to pass through and push against the bottom needle plate, a return needle is arranged on the surface needle plate and positioned at two ends of the length direction of the surface needle plate, a reset hole for the return needle to pass through is formed in the b plate, and the distance between the return needle and the surface needle plate is larger than the distance between the return needle and the surface needle plate.
Through adopting above-mentioned technical scheme, ejection mechanism is ejecting the product through ejector pin on the injection molding machine, back mould is moved towards the direction of keeping away from the front mould on the injection molding machine when the mould is opened, during the removal, the ejector pin that is fixed on the injection molding machine passes the backlog hole, afterwards, top movable bottom faller, drive the face faller and remove when top movable bottom faller, ejector pin ejecting hole on the face faller, thereby ejector pin ejection messenger's unloading after will cooling, afterwards, the injection molding machine makes the back mould compound die, when the back mould is close to the front mould, the return needle butt is in an board, the return needle that is pushed back at this moment drives the face faller and resets, the thimble on the face faller is driven simultaneously, the thimble is retracted gradually in the b board, until the return needle is held in the reset hole by the tip, the thimble is accomplished the reset, this stable injection molding die drives the thimble through the mode that the return needle is held in the front mould and is retracted in the b board in order to accomplish the reset, replace traditional spring reset mode, adopt mechanical mechanism to reset, prevent that the spring from breaking down and influence thimble reset and unloading, make reset stable, thereby guarantee the stability of unloading.
Optionally, the face needle plate is provided with a fixing hole, and the thimble is in threaded connection with the fixing hole so as to be fixed on the face needle plate.
By adopting the technical scheme, the fixing holes are arranged to be convenient for fixing the ejector pins on the surface needle plate, so that the surface needle plate is driven to move when the bottom needle plate is ejected, and the ejector pins eject out of products.
Optionally, the face needle plate is provided with a through hole, the through hole is located at two ends of the length direction of the face needle plate, the bottom needle plate is provided with a threaded hole, the return needle passes through the through hole and then is connected with the threaded hole in a threaded mode so that the return needle is fixed on the bottom needle plate, the return needle is provided with a limiting protrusion, and when the return needle is fixed in the threaded hole, the limiting protrusion abuts against the face needle plate.
Through adopting above-mentioned technical scheme, set up the screw hole and be convenient for with screw hole and through-hole, threaded connection realizes the fixed to the needle back in the screw hole after the needle back passes the through-hole to spacing protruding the face faller through on the needle back is spacing fixed, makes face faller and end faller fixed as an organic wholely.
Optionally, guide posts are arranged on four corners of the b plate, and guide grooves for accommodating the guide posts are formed in the a plate.
By adopting the technical scheme, the guide post is matched with the guide groove, and the rear face is guided when the guide post is matched with the die, so that the rear die is stably clamped on the front die.
Optionally, a forming cavity is formed in one side, facing the b plate, of the a plate, forming protrusions are arranged on one side, facing the a plate, of the b plate, and the forming protrusions are accommodated in the forming cavity.
By adopting the technical scheme, the forming cavity is matched with the forming bulge, the shape of a product is formed in the forming cavity after the die is closed, and the plastic forming part is formed after injection molding and cooling.
Optionally, a positioning ring is arranged on the panel, and the positioning ring is used for positioning the front die at the injection molding opening.
Through adopting above-mentioned technical scheme, set up the retainer plate and fix a position, be convenient for install the front mould in the mouth department of moulding plastics.
Optionally, a feeding port is formed in the positioning ring, the feeding port penetrates through the panel a and the panel, and the feeding port is communicated with the forming cavity.
By adopting the technical scheme, the injection molding machine is convenient to inject plastic raw materials into the molding cavity by arranging the feeding port.
Optionally, a fixing screw is arranged on the bottom plate, and the fixing screw is used for fixing the die leg and the b plate on the bottom plate.
Through adopting above-mentioned technical scheme, set up the dead screw and pass bottom plate and mould foot back and b board threaded connection to be fixed in on the b board with bottom plate and mould foot.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The ejector mechanism ejects a product through an ejector rod on the injection molding machine, the rear mold moves on the injection molding machine in a direction away from the front mold when the mold is opened, the fixed ejector rod on the injection molding machine passes through the backlog hole when the mold is moved, then the bottom needle plate is ejected, the ejector pin on the surface needle plate is driven to move while the bottom needle plate is ejected, so that the cooled product is ejected to enable the product to be discharged, then the injection molding machine enables the rear mold to be assembled, when the rear mold is close to the front mold, the return needle is abutted to the a plate, the ejector pin on the surface needle plate is driven to reset by the return needle which is ejected at the moment, the ejector pin on the surface needle plate is simultaneously driven, the ejector pin is gradually retracted into the b plate until the return needle is ejected to the end part of the ejector pin is accommodated in the reset hole, the ejector pin is retracted into the b plate to finish reset, the injection molding mold which is stable in a mode that the return needle is ejected onto the front mold, a mechanical mechanism is adopted to reset, so that the ejector pin reset is prevented from being influenced by faults of a spring reset mode, the ejector pin reset and the blanking is stable, and the blanking is ensured;
2. The guide post is arranged to be matched with the guide groove, and the rear face is guided when the guide post is matched with the die, so that the rear die is stably clamped on the front die;
3. positioning rings are arranged for positioning, so that the front die is convenient to install at the injection molding opening.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an injection mold with stable blanking in an embodiment of the present application.
Fig. 2 is a schematic diagram of the front and rear molds of the embodiment.
Fig. 3 is an exploded schematic view of an ejection mechanism of an embodiment.
Fig. 4 is a schematic diagram of the front and rear molds of the embodiment.
The reference numerals are 1, a front mould, 101, a panel, 102, a plate, 2, a rear mould, 201, a bottom plate, 202, mould legs, 203, b plate, 3, an ejection mechanism, 31, a bottom needle plate, 32, a face needle plate, 33, a thimble, 4, an ejection hole, 5, a backlog hole, 6, a backstop, 7, a reset hole, 8, a fixing hole, 9, a through hole, 10, a threaded hole, 11, a limiting bulge, 12, a guide pillar, 13, a guide groove, 14, a forming cavity, 15, a forming bulge, 16, a positioning ring, 17, a feed inlet and 18, a fixing screw.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses an injection mold with stable blanking. Referring to fig. 1, the injection mold with stable blanking includes a front mold 1 and a rear mold 2, the front mold 1 is used for being mounted at an injection port of an injection molding machine, the front mold 1 includes a face plate 101 and an a plate 102 fixed on the face plate 101, and the rear mold 2 includes a bottom plate 201, mold legs 202 mounted on the bottom plate 201, and a b plate 203 mounted on the mold legs 202.
Referring to fig. 2 and 3, an ejector mechanism 3 is mounted on a base plate 201, the ejector mechanism 3 includes a bottom needle plate 31, a face needle plate 32 mounted on the bottom needle plate 31, and a thimble 33 mounted on the face needle plate 32, and an ejector hole 4 through which the thimble 33 passes is formed in a b plate 203. The needle return plate 32 is provided with the needle return 6, the needle return 6 is positioned at two ends of the length direction of the needle return plate 32, the b plate 203 is provided with the reset hole 7 for the needle return 6 to pass through, and the distance between the needle return 6 and the needle return 32 is larger than the distance between the thimble 33 and the needle return 32. The surface needle plate 32 is provided with a fixing hole 8, and the thimble 33 is in threaded connection with the fixing hole 8 so as to be fixed on the surface needle plate 32. The face needle plate 32 is provided with through holes 9, the through holes 9 are positioned at two ends of the length direction of the face needle plate 32, the bottom needle plate 31 is provided with threaded holes 10, the return needle 6 passes through the through holes 9 and is then connected in the threaded holes 10 in a threaded manner so that the return needle 6 is fixed in the bottom needle plate 31, the return needle 6 is integrally fixed with limiting protrusions 11, and when the return needle 6 is fixed in the threaded holes 10, the limiting protrusions 11 are abutted against the face needle plate 32.
Referring to fig. 2 and 4, guide posts 12 are fixed to four corners of the b plate 203, and guide grooves 13 for receiving the guide posts 12 are formed in the a plate 102. a molding cavity 14 is formed on one side of the a plate 102 facing the b plate 203, a molding protrusion 15 is fixed on one side of the b plate 203 facing the a plate 102, and the molding protrusion 15 is accommodated in the molding cavity 14. A positioning ring 16 is fixed on one side of the panel 101 away from the a-plate 102, and the positioning ring 16 is used for positioning the front die 1 at an injection port. The positioning ring 16 is provided with a feed inlet 17, the feed inlet 17 penetrates through the panel 101 and the a plate 102, and the feed inlet 17 is communicated with the forming cavity 14. The bottom plate 201 is provided with a fixing screw 18, and the fixing screw 18 is used for fixing the die leg 202 and the b plate 203 to the bottom plate 201. The bottom plate 201 is provided with a backlog hole 5, and the backlog hole 5 is used for a push rod on the injection molding machine to pass through and push the bottom needle plate 31.
The ejector mechanism 3 ejects a product through an ejector rod on an injection molding machine, the rear mold 2 moves on the injection molding machine in a direction away from the front mold 1 during mold opening, the ejector rod fixed on the injection molding machine passes through the backlog hole 5 during movement, then the bottom needle plate 31 is ejected, the ejector rod 32 is driven to move while the bottom needle plate 31 is ejected, the ejector rod 33 on the surface needle plate 32 ejects the hole 4, thereby ejecting the cooled product to enable the product to be blanked, then the injection molding machine enables the rear mold 2 to be clamped, when the rear mold 2 is close to the front mold 1, the ejector rod 6 is abutted against the a plate 102, the ejector rod 33 on the surface needle plate 32 is driven to reset at the moment, the ejector rod 33 on the ejector rod is gradually retracted into the b plate 203 until the ejector rod 6 is ejected into the reset hole 7, the ejector rod 33 is completely reset, the ejector rod 33 is driven to retract into the b plate 203 in a mode of ejecting the bottom needle plate 31, the ejector rod 33 is replaced by the ejector rod 6, the traditional spring reset mode is adopted, the ejector rod 33 is prevented from being reset, and stable, and the ejector rod 33 is prevented from being reset by the spring reset mode, and stable blanking is ensured.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421487910.2U CN222886188U (en) | 2024-06-27 | 2024-06-27 | Injection mold with stable material feeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421487910.2U CN222886188U (en) | 2024-06-27 | 2024-06-27 | Injection mold with stable material feeding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222886188U true CN222886188U (en) | 2025-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421487910.2U Active CN222886188U (en) | 2024-06-27 | 2024-06-27 | Injection mold with stable material feeding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222886188U (en) |
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2024
- 2024-06-27 CN CN202421487910.2U patent/CN222886188U/en active Active
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