CN219445904U - Injection mold with embedded screw positioning function - Google Patents
Injection mold with embedded screw positioning function Download PDFInfo
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- CN219445904U CN219445904U CN202320401081.0U CN202320401081U CN219445904U CN 219445904 U CN219445904 U CN 219445904U CN 202320401081 U CN202320401081 U CN 202320401081U CN 219445904 U CN219445904 U CN 219445904U
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- positioning
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- ejector
- locking piece
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses an injection mold with a pre-buried screw positioning function, which comprises: the front mold core, the rear mold core, the ejector plate, the ejector pins, the positioning driving plate, the positioning driving device and the positioning ejector pins are oppositely arranged, and a cavity for injection molding a product is formed by surrounding the front mold core and the rear mold core; the positioning driving plate is movably arranged between the ejector plate and the rear die core, one end of the positioning ejector rod is fixed on the positioning driving plate, and the other end of the positioning ejector rod penetrates through the rear die core and extends to the die cavity; the front mold core is provided with a positioning hole which is used for embedding the screw and exposing the head of the screw in the cavity; the positioning driving device is connected with the positioning driving plate and used for driving the positioning driving plate to drive the positioning ejector rod to eject the screw to a proper position and driving the positioning driving plate to reset before injection molding so as to drive the positioning ejector rod to be separated from the screw. The utility model can accurately position the embedded screw in the cavity, can not form a collision hole on a product, and meets the performance requirement of the product.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to an injection mold with a pre-buried screw positioning function.
Background
With the development of technology, the demands for injection molding products are increasing, and the injection molding products are also becoming diversified. The screw is pre-embedded in the injection mold, and then injection molding is performed, so that the product integrally formed with the screw has the advantages of high strength, firmness and durability, reduction of production procedures, reduction of labor cost and the like, and is gradually adopted.
At present, the common practice of embedding screws in an injection mold is to embed the screws in a front mold core in advance, and when the mold is closed, the screws are propped against a boss or an insert arranged on a rear mold core to position the screws, and then injection molding is performed. The boss or the insert on the rear mold core always supports the screw in the injection molding process, so that a collision hole can be formed at the position after the product is injection molded, the screw head can not be completely wrapped by plastic, and certain influence can be generated on some products with specific performance requirements, such as reduction of the insulation effect of the products, so that the product performance requirements can not be met. Accordingly, there is a need for improvements in the art that overcome the shortcomings of the prior art.
Disclosure of Invention
The utility model aims to solve the problem of providing an injection mold with a pre-buried screw positioning function, so as to overcome the defect that a product molded by the existing injection mold has a collision hole at the pre-buried screw position and cannot meet the product performance requirement.
The technical scheme adopted by the utility model for solving the technical problems is as follows: an injection mold with embedded screw positioning function, comprising: the front die core, the rear die core, the ejector plate and the plurality of ejector pins fixed on the ejector plate are oppositely arranged, and a cavity for injection molding a product is formed by surrounding the front die core and the rear die core; the ejector pin plate is arranged on one side of the rear die core, which is opposite to the front die core, and is used for driving the ejector pins to eject the formed product.
The injection mold with the embedded screw positioning function also comprises a positioning driving plate, a positioning driving device and a positioning ejector rod, wherein the positioning driving plate is movably arranged between the ejector plate and the rear mold core; a positioning hole opposite to the positioning ejector rod is formed in one side, facing the rear die core, of the front die core, and is used for embedding screws in a pre-buried mode and enabling the heads of the screws to be exposed in the cavity; the positioning driving device is connected with the positioning driving plate and is used for driving the positioning driving plate to drive the positioning ejector rod to push the screw to be in place, and the positioning driving plate can be driven to reset before injection molding so as to drive the positioning ejector rod to be separated from the screw.
As a further improvement of the utility model, a positioning locking mechanism is arranged in the front mold core, the positioning locking mechanism comprises a locking piece and a spring, a containing hole which is vertically communicated with the positioning hole is arranged in the front mold core, the locking piece is movably arranged in the containing hole, and the spring is elastically propped against the locking piece, so that one end of the locking piece stretches into the positioning hole to lock the screw.
As a further improvement of the utility model, one end of the locking piece is provided with a locking part with a saw-tooth cross section, and the locking part is used for abutting against a threaded part of a screw to be matched with the threaded part in a concave-convex way to form locking.
As a further improvement of the utility model, a side plate is fixed at the position of the front mould core corresponding to the accommodating hole, and the spring is arranged in an accommodating groove arranged at the other end of the locking piece and elastically propped against the side plate.
As a further improvement of the present utility model, the locking member has one end with a smaller diameter than the other end thereof, so that a stepped surface is formed on the outer periphery thereof for abutting against a stopper surface provided in the receiving hole to limit the length of the locking member extending into the positioning hole.
As a further improvement of the utility model, two positioning driving devices are arranged, and are oil cylinders respectively fixed at the upper end and the lower end of the positioning driving plate, and the respective output shafts of the two positioning driving devices are fixedly connected with the thimble plate through fixing blocks respectively; the two positioning driving devices are connected to the oil circuit through the guide pipe through an oil circuit connecting block and used for synchronously driving the positioning driving plates to act.
The beneficial effects of the utility model are as follows: the utility model provides an injection mold with a pre-buried screw positioning function, wherein one side of an ejector plate is provided with a positioning driving plate driven by a positioning driving device to act, the positioning driving plate is provided with a positioning ejector rod, the pre-buried screw is ejected in place through the positioning ejector rod, the pre-buried screw is accurately positioned in a mold cavity, and the pre-buried screw can be separated from the screw before injection molding, so that the head of the screw is completely exposed in the mold cavity, the head of the screw can be completely wrapped by plastic in the injection molding process, no collision hole is formed, and the product performance requirement is met; meanwhile, a positioning locking mechanism is further arranged in the front mold core, elastic acting force is applied to the locking piece through the spring, so that the locking portion arranged on the locking piece is matched with the thread portion of the screw in a concave-convex mode to form locking, screw displacement in the injection molding process is avoided, and the screw position is ensured to be accurate.
Drawings
FIG. 1 is a perspective view of an injection mold with embedded screw positioning function of the present utility model;
FIG. 2 is a right side view of an injection mold with embedded screw positioning function of the present utility model;
FIG. 3 is a cross-sectional view of the injection mold with embedded screw positioning function along the direction of FIG. 2 A-A;
FIG. 4 is a cross-sectional view of the injection mold with embedded screw positioning function along the direction of FIG. 2B-B;
FIG. 5 is an enlarged view of C in FIG. 4 of the injection mold with embedded screw positioning function of the present utility model;
FIG. 6 is a perspective view of the screw of the present utility model pre-embedded in the front mold core;
fig. 7 is a perspective view of the locking portion of the present utility model.
The following description is made with reference to the accompanying drawings:
1. a front mold core; 2. a rear mold core; 3. a needle ejection plate; 4. a thimble; 5. a product;
6. positioning a driving plate; 7. a positioning drive device; 8. positioning the ejector rod; 9. a screw;
10. a locking member; 1001. a locking part; 1002. a step surface; 11. a spring; 12. a side plate; 13. a fixed block; 14. an oil way connecting block; 15. a front mold; 16. and (5) a rear mold.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 7, the present utility model provides an injection mold with embedded screw positioning function, comprising: front mould core 1, back mould core 2, thimble board 3, a plurality of thimble 4, location drive plate 6, location drive arrangement 7, location ejector pin 8, front mould 15 and back mould 16. The application has injection mold of embedded screw locate function for horizontal injection mold, front mould 15 and back mould 16 all along vertical relative arrangement, regard fig. 1 as the reference, front mould 15 is in the right side, and back mould 16 is in the left side. The front mold core 1 is fixed on the front mold 15, the rear mold core 2 is fixed on the rear mold 16, and the front mold core 1 and the rear mold core 2 are oppositely arranged, and can be encircled to form a cavity for injection molding the product 5 in a mold closing state. The ejector plate 3 is arranged at the left side of the rear die core 2, which is opposite to the front die core 1, one end of a plurality of ejector pins 4 is fixed on the ejector plate 3, and the other end sequentially penetrates through the rear die 16 and the rear die core 2 to extend to the die cavity for forming; after the die is opened, a plurality of ejector pins 4 are driven by the ejector plate 3 to eject the product 5 formed in the die cavity.
In this embodiment, the ejector plate 3 has a front ejector plate and a rear ejector plate that are fixed in a superimposed manner, and one ends of the plurality of ejector pins 4 are each provided with an ejector pin hanging table formed by increasing the diameters, and the ejector pin hanging table is limited between the front ejector plate and the rear ejector plate so as to be fixed.
Referring to fig. 3 to 6, a positioning hole in the form of a blind hole is provided at a side of the front mold core 1 facing the rear mold core 2, and the positioning hole is used for embedding the screw 9. When the screw 9 is embedded, the screw 9 is inserted into the positioning hole along the end of the threaded part, the head of the screw 9 is exposed outwards, and when the die is closed, the head of the screw 9 is positioned in the die cavity. A polish rod part is arranged between the head part and the thread part of the screw 9, and glue overflow into the positioning hole can be prevented by reducing the fit tolerance of the polish rod part and the positioning hole. The number of the positioning holes on the front mold core 1 can be correspondingly configured according to the number of the screws 9 actually needed on the product 5. In this embodiment, ten screws 9 are embedded in the front mold core 1 (see fig. 6).
Further, the positioning driving plate 6 is movably arranged between the ejector plate 3 and the rear mold core 2. The positioning ejector rods 8 are distributed in parallel with the ejector pins 4, and one end of each positioning ejector rod 8 is fixed on the positioning driving plate 6; specifically, one end of the positioning ejector rod 8 is provided with an ejector rod hanging table formed by increasing the diameter, and the ejector rod hanging table is limited on the positioning driving plate 6 and is pressed and fixed by a pressing plate. The other end of the positioning ejector rod 8 sequentially penetrates through the rear die 16 and the rear die core 2 and then extends to the die cavity. In this embodiment, the positioning ejector rods 8 are ten and are opposite to the screws 9 embedded in the front mold core 1 one by one. The positioning driving device 7 is connected with the positioning driving plate 6, and the positioning driving device 7 is used for driving the positioning driving plate 6 to drive the positioning ejector rod 8 to push the screw 9 to be in place, namely, the end face of the screw 9 is just abutted against the inner wall of the positioning hole, and the positioning driving plate 6 can be driven to reset before injection molding so as to drive the positioning ejector rod 8 to be separated from the screw 9. This application not only can realize carrying out the accurate positioning to pre-buried screw 9 in the die cavity through adopting this structural design, but also can break away from with screw 9 before moulding plastics for the head of screw 9 exposes in the die cavity completely, and the in-process plastic of moulding plastics can wrap up its head completely, can not form and bump the perforation, satisfies product performance demand.
Referring to fig. 1 and 3, two positioning driving devices 7 are provided, and are oil cylinders respectively fixed at the upper end and the lower end of the positioning driving plate 6. The respective output shafts of the two positioning driving devices 7 are fixedly connected with the ejector plate 3 through fixing blocks 13. In the mold closing state, the ejector plate 3 is held stationary by the press attachment, and after the two cylinders are started, the positioning drive plate 6 is driven to move toward the rear mold 16 by a reaction force applied to the ejector plate 3. The oil cylinder is directly arranged on the positioning driving plate 6, so that the structure can be simplified, and the occupied space can be reduced. Wherein, two positioning driving devices 7 are connected to the oil path through a conduit via an oil path connecting block 14 for synchronously driving the positioning driving plate 6 to move so as to improve the stability of the movement of the positioning driving plate 6.
In addition, the ejector plate 3, the positioning driving plate 6 and the rear die 16 are in sliding connection through guide posts and guide sleeves (not shown in the figure), so that the stability of the ejector plate 3 and the positioning driving plate 6 during the action is ensured.
Referring to fig. 5 to 7, in order to lock the screws 9 pre-buried in the positioning holes, so as to prevent the screws 9 from falling out in the process of die assembly or the screws 9 from shifting in the process of injection molding, positioning locking mechanisms are respectively installed in the front die core 1 in one-to-one correspondence with the positioning holes. The positioning locking mechanism comprises a locking piece 10 and a spring 11, wherein a containing hole which is vertically communicated with a positioning hole is formed in a front mold core 1, the locking piece 10 is movably installed in the containing hole, the spring 11 is elastically abutted against the locking piece 10, and one end of the locking piece 10 stretches into the positioning hole to lock a screw 9. Wherein, one end of the locking piece 10 is provided with a locking part 1001 with a saw-tooth-shaped section, when the screw 9 is buried in advance, the screw 9 stretches into the positioning hole to push the locking part 1001 first, so that the locking piece 10 retreats and compresses the spring 11, and when the screw 9 continues to stretch, the locking piece 10 makes the locking part 1001 on the locking piece prop against the threaded part of the screw 9 under the elastic force of the spring 11 and is matched with the threaded part in a concave-convex manner to form locking. In order to ensure accurate positioning of the screw 9, after die assembly, the screw 9 is jacked by the positioning ejector rod 8 until the screw 9 abuts against the inner wall of the positioning hole, and the jacked screw 9 is locked by the locking piece 10.
In this embodiment, the front mold core 1 is of a split structure, and is composed of an outer mold core, an inner mold core located in the middle of the outer mold core, and a plurality of mold core inserts, wherein the accommodating holes are all formed in the inner mold core, and a side plate 12 is fixed on one side of the inner mold core corresponding to the accommodating holes. The spring 11 is placed in a receiving groove provided at the other end of the locking member 10 and elastically abuts against the side plate 12, thereby always applying an elastic force to the locking member 10 in the direction of the positioning hole.
It should be noted that, the locking member 10 has a cylindrical shape, and the diameter of one end is smaller than that of the other end, so that an annular step surface 1002 is formed on the outer periphery of the locking member, and the step surface 1002 is used for abutting against an annular stop surface arranged in the accommodating hole to limit the extending length of the locking member 10 into the positioning hole, that is, only allow the locking portion 1001 to extend into the positioning hole, so that when the screw 9 is inserted into the positioning hole, the locking member 10 is retracted by pushing the serrated locking portion 1001, thereby avoiding the locking member 10 from extending into the positioning hole too much to be pushed.
The working process of the embodiment is as follows: firstly, in the open mold state, the screws 9 are embedded in the positioning holes of the front mold core 1 one by one and are blocked by the locking piece 10; then, die assembly is carried out, and in the die assembly state, the positioning driving device 7 drives the positioning driving plate 6 to drive the positioning ejector rod 8 to extend into the die cavity, and the screw 9 is jacked to be in place; then, the positioning driving device 7 drives the positioning driving plate 6 and the positioning ejector rod 8 to reset again, so that the positioning ejector rod 8 is separated from the screw 9; finally, injection molding is carried out.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.
Claims (6)
1. An injection mold with a pre-buried screw positioning function comprises a front mold core (1), a rear mold core (2), an ejector plate (3) and a plurality of ejector pins (4) fixed on the ejector plate (3), wherein the front mold core (1) and the rear mold core (2) are oppositely arranged and are surrounded to form a cavity for injection molding a product (5); the ejector pin plate (3) is arranged on one side of the rear die core (2) opposite to the front die core (1) and is used for driving the ejector pin (4) to eject a formed product (5); the method is characterized in that: the mold further comprises a positioning driving plate (6), a positioning driving device (7) and a positioning ejector rod (8), wherein the positioning driving plate (6) is movably arranged between the ejector plate (3) and the rear mold core (2), one end of the positioning ejector rod (8) is fixed on the positioning driving plate (6), and the other end of the positioning ejector rod penetrates through the rear mold core (2) and extends to the mold cavity; a positioning hole opposite to the positioning ejector rod (8) is formed in one side, facing the rear die core (2), of the front die core (1), and is used for embedding a screw (9) and enabling the head of the screw (9) to be exposed in the cavity; the positioning driving device (7) is connected with the positioning driving plate (6) and is used for driving the positioning driving plate (6) to drive the positioning ejector rod (8) to push the screw (9) to be in place, and the positioning driving plate (6) can be driven to reset before injection molding so as to drive the positioning ejector rod (8) to be separated from the screw (9).
2. The injection mold with embedded screw positioning function according to claim 1, wherein: install location locking mechanism in front mould benevolence (1), location locking mechanism includes locking piece (10) and spring (11), be provided with in front mould benevolence (1) with the holding hole of locating hole vertical intercommunication, locking piece (10) movable mounting is in this holding hole, spring (11) elasticity butt is in on locking piece (10), make one end of locking piece (10) stretches into in the locating hole with screw (9) locking.
3. The injection mold with embedded screw positioning function according to claim 2, characterized in that: one end of the locking piece (10) is provided with a locking part (1001) with a saw-tooth-shaped cross section, and the locking part (1001) is used for abutting against a threaded part of the screw (9) to be matched with the threaded part in a concave-convex manner to form locking.
4. The injection mold with embedded screw positioning function according to claim 2, characterized in that: the front mold core (1) is fixed with a side plate (12) corresponding to the accommodating hole, and the spring (11) is arranged in an accommodating groove arranged at the other end of the locking piece (10) and elastically abuts against the side plate (12).
5. The injection mold with embedded screw positioning function according to claim 2, characterized in that: the diameter of one end of the locking piece (10) is smaller than that of the other end of the locking piece, so that a step surface (1002) is formed on the periphery of the locking piece, and the step surface (1002) is used for being abutted against a stop surface arranged in the accommodating hole so as to limit the length of the locking piece (10) extending into the positioning hole.
6. The injection mold with embedded screw positioning function according to claim 1, wherein: the two positioning driving devices (7) are provided with oil cylinders, the oil cylinders are respectively fixed at the upper end and the lower end of the positioning driving plate (6), and respective output shafts of the two positioning driving devices (7) are respectively fixedly connected with the thimble plate (3) through fixing blocks (13); the two positioning driving devices (7) are connected to an oil way through an oil way connecting block (14) through a guide pipe and are used for synchronously driving the positioning driving plates (6) to act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320401081.0U CN219445904U (en) | 2023-03-07 | 2023-03-07 | Injection mold with embedded screw positioning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320401081.0U CN219445904U (en) | 2023-03-07 | 2023-03-07 | Injection mold with embedded screw positioning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219445904U true CN219445904U (en) | 2023-08-01 |
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ID=87416185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320401081.0U Active CN219445904U (en) | 2023-03-07 | 2023-03-07 | Injection mold with embedded screw positioning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219445904U (en) |
-
2023
- 2023-03-07 CN CN202320401081.0U patent/CN219445904U/en active Active
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