Injection molding core-pulling mold capable of forming internal threads
By designing an injection molding core mold with moldable internal threads, using a thread core pulling mechanism and a side core pulling mechanism, the problem of turning of the internal thread structure in traditional processes is solved, and the effect of forming can be achieved during the injection molding process is achieved.
Patent Information
- Application Number
- CN202421863694.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Traditional dynamic and fixed mold combinations are difficult to achieve the water-dividing structure forming of the tee joint, especially the forming of the internal thread structure requires additional turning technology, which is time-consuming and labor-intensive.
An injection molded core mold with moldable internal threads is designed, using a threaded core pulling mechanism and a side core pulling mechanism. Through components such as motors, gears and electric push rods, the rotation and core pulling of the thread column are realized to avoid damage to the molded structure.
The internal thread structure of the tee joint can be formed during the injection molding process, without requiring additional turning technology, shortening processing time and improving molding efficiency.
Smart Images
Figure CN222875196U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection core-pulling moulds, in particular to an injection core-pulling mould capable of forming internal threads. Background Art
[0002] Plastic molds are tools used in industry to match plastic molding machines and give them complete configurations and precise dimensions. Due to the wide variety of plastics and processing methods, and the varying complexity of the structures of plastic products, there are also many types and structures of plastic molds.
[0003] Some three-way joints are made of plastic, and it is difficult to achieve the molding of the water diversion structure by using the traditional movable mold and fixed mold. In addition, one end of this type of three-way joint is provided with an internal thread structure. The traditional internal thread structure is formed by turning on another lathe after the product is injection molded, that is, the process requires injection molding and then turning, which is time-consuming and labor-intensive, and prolongs the processing time. Therefore, the present application proposes an injection core-pulling mold that can form internal threads to solve the above problems. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an injection core-pulling mold capable of molding internal threads, which has the advantage of good molding effect and solves the problem of poor molding effect of the existing injection core-pulling molds.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection core-pulling mold capable of forming internal threads, comprising a bottom plate, two support seats are fixed on the upper surface of the bottom plate, a lower mold is fixed on the upper surface of the two support seats, an upper mold is attached to the upper surface of the lower mold, a thread core-pulling mechanism is provided on the right side of the lower mold, and a side core-pulling mechanism is provided inside the lower mold;
[0006] The thread core pulling mechanism includes a rotating component and a moving component. The rotating component includes a motor fixed to the right side of the lower mold, a first gear fixed to the output end of the motor, two second gears meshed with the outer surface of the first gear, and a threaded column fixed to the left side of the second gear.
[0007] By adopting this technical solution, the threaded core pulling mechanism and the side core pulling mechanism are used to facilitate the molding of the workpiece, and at the same time, it is convenient to perform core pulling after molding to prevent affecting the discharge of the injection molded parts.
[0008] Furthermore, the moving component includes an electric push rod fixed to the upper surface of the motor, a connecting rod fixed to the output end of the electric push rod, and a connecting block slidably connected to the outer surface of the connecting rod. A limiting groove is provided on the right side of the connecting block, and two first sliding grooves are provided on the upper surface of the lower mold.
[0009] By adopting this technical solution, the connecting rod and the connecting block are driven to move together by the electric push rod.
[0010] Furthermore, two rotating holes are provided on the left side of the connecting block, and the threaded column is rotatably connected to the inside of the rotating holes through bearings.
[0011] By adopting this technical solution, the stability of the threaded column during rotation is increased.
[0012] Furthermore, the connecting block is a rectangular parallelepiped with a hollow interior and a missing lower end, a first sliding groove is provided on the right side of the upper surface of the lower mold, and the connecting block is slidably connected to the interior of the first sliding groove.
[0013] By adopting this technical solution, it is convenient to drive the connecting block to move through the connecting rod.
[0014] Furthermore, the connecting rod and the limiting groove are both T-shaped, and the connecting rod is slidably connected to the inside of the limiting groove.
[0015] By adopting this technical solution, a certain buffer space is provided for the connecting rod.
[0016] Furthermore, the side core pulling mechanism includes a second guide column and two first guide columns fixed to the lower surface of the upper mold, a first sliding block slidably connected to the inside of the first sliding groove, and a first side core fixed to the opposite side of the two first sliding blocks. A second sliding groove is provided on the upper surface of the lower mold. The side core pulling mechanism also includes a second sliding block slidably connected to the inside of the second sliding groove, and two second side cores fixed to the right side of the second sliding block.
[0017] By adopting this technical solution, the side core-pulling mechanism is used to facilitate the molding of the workpiece, and at the same time, it is convenient to pull the core after molding to prevent affecting the discharge of the injection molded parts.
[0018] Furthermore, a first sliding hole is formed on the upper surface of the first sliding block, and the first guide post is slidably connected to the inside of the first sliding hole.
[0019] By adopting this technical solution, when the first guide column moves, the first sliding block is driven to move through the first sliding hole.
[0020] Furthermore, a second sliding hole is formed on the upper surface of the second sliding block, and the second guide post is slidably connected to the inside of the second sliding hole.
[0021] By adopting this technical solution, when the second guide column moves, the second sliding block is driven to move through the second sliding hole.
[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0023] 1. The injection core-pulling mold capable of forming internal threads has a thread core-pulling mechanism. The motor drives the first gear to rotate, drives the second gear and the threaded column to rotate together, the electric push rod drives the connecting rod to move, the connecting rod slides in the limit groove, and drives the connecting block to move to the right, the connecting block drives the threaded column and the second gear to move together, and the threaded column rotates and moves at the same time, so as to achieve the effect of driving the threaded column to withdraw, so as to avoid damage to the formed thread structure.
[0024] 2. The injection core-pulling mold capable of forming internal threads has a side core-pulling mechanism. When the mold is opened, the upper mold moves upward, driving the first guide column and the second guide column to move simultaneously. When the two first guide columns move, the two first sliding blocks move back to each other simultaneously and drive the first side core to move. When the second guide column moves, it drives the second sliding block and the two second guide columns to move together, completing the side core pulling, which is convenient for the subsequent removal of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a three-dimensional appearance diagram of the utility model;
[0026] Figure 2 It is a schematic diagram of the structure of the utility model;
[0027] Figure 3 This is a three-dimensional appearance diagram of the thread core pulling mechanism of the utility model;
[0028] Figure 4 It is a three-dimensional appearance diagram of the side core pulling mechanism of the utility model.
[0029] In the figure: 1. bottom plate; 2. support seat; 3. lower mold; 4. upper mold; 5. threaded core-pulling mechanism; 501. motor; 502. first gear; 503. second gear; 504. threaded column; 505. electric push rod; 506. connecting rod; 507. connecting block; 508. limiting groove; 509. first slide groove; 6. side core-pulling mechanism; 601. first sliding block; 602. first guide column; 603. first side core; 604. second slide groove; 605. second sliding block; 606. second guide column; 607. second side core. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] See also Figures 1 to 2The injection core-pulling mold capable of forming internal threads in this embodiment comprises a base plate 1, two support seats 2 are fixed on the upper surface of the base plate 1, a lower mold 3 is fixed on the upper surface of the two support seats 2, an upper mold 4 is attached to the upper surface of the lower mold 3, a thread core-pulling mechanism 5 is provided on the right side of the lower mold 3, and a side core-pulling mechanism 6 is provided inside the lower mold 3. The thread core-pulling mechanism 5 and the side core-pulling mechanism 6 facilitate the molding of the workpiece, and at the same time facilitate the core pulling after molding to prevent affecting the discharge of the injection molded parts.
[0032] See also Figures 3 to 4 In order to perform thread core pulling, the thread core pulling mechanism 5 in this embodiment includes a rotating component and a moving component. The rotating component includes a motor 501 fixed to the right side of the lower mold 3, a first gear 502 fixed to the output end of the motor 501, two second gears 503 meshed with the outer surface of the first gear 502, and a threaded column 504 fixed to the left side of the second gear 503. The first gear 502 is driven to rotate by the motor 501, and the second gear 503 and the threaded column 504 are driven to rotate together.
[0033] The moving assembly includes an electric push rod 505 fixed on the upper surface of the motor 501, a connecting rod 506 fixed on the output end of the electric push rod 505, and a connecting block 507 slidably connected to the outer surface of the connecting rod 506. A limiting groove 508 is provided on the right side of the connecting block 507, and two first sliding grooves 509 are provided on the upper surface of the lower mold 3. The connecting rod 506 and the connecting block 507 are driven to move together by the electric push rod 505.
[0034] Among them, two rotating holes are opened on the left side of the connecting block 507, and the threaded column 504 is rotatably connected to the inside of the rotating hole through a bearing, which increases the stability of the threaded column 504 when rotating. The connecting block 507 is a rectangular block with a hollow interior and a missing lower end, which facilitates the first gear 502 to drive the second gear 503 to rotate.
[0035] In addition, a first sliding groove is provided on the right side of the upper surface of the lower mold 3 , and the connecting block 507 is slidably connected to the inside of the first sliding groove, so that the connecting block 507 can be driven to move by the connecting rod 506 .
[0036] In addition, the connecting rod 506 and the limiting groove 508 are both T-shaped, and the connecting rod 506 is slidably connected to the inside of the limiting groove 508, providing a certain buffer space for the connecting rod 506.
[0037] In the thread core pulling mechanism 5 of this embodiment, the motor 501 drives the first gear 502 to rotate, and drives the second gear 503 and the threaded column 504 to rotate together, the electric push rod 505 drives the connecting rod 506 to move, the connecting rod 506 slides in the limiting groove 508, and drives the connecting block 507 to move to the right, and the connecting block 507 drives the threaded column 504 and the second gear 503 to move together, and the threaded column 504 rotates and moves at the same time, so as to achieve the effect of driving the threaded column 504 to withdraw, so as to avoid damage to the formed thread structure.
[0038] Please refer again Figures 3 to 4 In order to pull the core sideways, the side core pulling mechanism 6 in this embodiment includes a second guide column 606 and two first guide columns 602 fixed on the lower surface of the upper mold 4, a first sliding block 601 slidably connected to the inside of the first slide groove 509, and a first side core 603 fixed to the opposite side of the two first sliding blocks 601. A second slide groove 604 is provided on the upper surface of the lower mold 3. The side core pulling mechanism 6 also includes a second sliding block 605 slidably connected to the inside of the second slide groove 604, and two second side cores 607 fixed to the right side of the second sliding block 605.
[0039] Among them, a first sliding hole is opened on the upper surface of the first sliding block 601, and the first guide column 602 is slidably connected to the inside of the first sliding hole, so that when the first guide column 602 moves, the first sliding block 601 is driven to move through the first sliding hole. A second sliding hole is opened on the upper surface of the second sliding block 605, and the second guide column 606 is slidably connected to the inside of the second sliding hole, so that when the second guide column 606 moves, the second sliding block 605 is driven to move through the second sliding hole.
[0040] The side core pulling mechanism 6 in this embodiment, when the mold is opened, the upper mold 4 moves upward, driving the first guide column 602 and the second guide column 606 to move at the same time. When the two first guide columns 602 move, the two first sliding blocks 601 move away from each other at the same time and drive the first side core 603 to move. When the second guide column 606 moves, it drives the second sliding block 605 and the two second guide columns 606 to move together, completing the side core pulling, which is convenient for the subsequent removal of the workpiece.
[0041] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail.
[0042] The working principle of the above embodiment is:
[0043] (1) When core pulling is required, start the motor 501 and the electric push rod 505. The motor 501 drives the first gear 502 to rotate. When the first gear 502 rotates, it drives the second gear 503 and the threaded column 504 to rotate together. The electric push rod 505 drives the connecting rod 506 to move at the same time. The connecting rod 506 slides in the limiting groove 508 and drives the connecting block 507 to move to the right through the limiting groove 508. The connecting block 507 drives the threaded column 504 and the second gear 503 to move together. By rotating the threaded column 504 and moving at the same time, the threaded column 504 is driven to withdraw, so as to avoid damage to the formed threaded structure.
[0044] (2) During the mold opening process, the upper mold 4 will move upward, driving the first guide column 602 and the second guide column 606 to move simultaneously through the upper mold 4. When the two first guide columns 602 move, they will drive the two first sliding blocks 601 to move in opposite directions at the same time, and drive the first side core 603 to move through the first sliding block 601. When the second guide column 606 moves, it will drive the second sliding block 605 to move, and drive the two second guide columns 606 to move through the second sliding block 605, completing the lateral core pulling, which is convenient for the subsequent removal of the workpiece.
Claims
1. An injection core-pulling mold capable of forming internal threads, comprising a bottom plate (1), characterized in that: Two support seats (2) are fixed on the upper surface of the bottom plate (1); a lower mold (3) is fixed on the upper surface of the two support seats (2); an upper mold (4) is attached to the upper surface of the lower mold (3); a threaded core pulling mechanism (5) is provided on the right side of the lower mold (3); and a side core pulling mechanism (6) is provided inside the lower mold (3); The thread core pulling mechanism (5) comprises a rotating assembly and a moving assembly, wherein the rotating assembly comprises a motor (501) fixed to the right side of the lower mold (3), a first gear (502) fixed to the output end of the motor (501), two second gears (503) meshed with the outer surface of the first gear (502), and a threaded column (504) fixed to the left side of the second gear (503).
2. The injection core-pulling mold capable of forming internal threads according to claim 1, characterized in that: The moving assembly comprises an electric push rod (505) fixed to the upper surface of the motor (501), a connecting rod (506) fixed to the output end of the electric push rod (505), and a connecting block (507) slidably connected to the outer surface of the connecting rod (506), a limiting groove (508) being provided on the right side of the connecting block (507), and two first sliding grooves (509) being provided on the upper surface of the lower mold (3).
3. The injection core-pulling mold capable of forming internal threads according to claim 2, characterized in that: Two rotating holes are provided on the left side of the connection block (507), and the threaded column (504) is rotatably connected to the inside of the rotating holes via bearings.
4. The injection core-pulling mold capable of forming internal threads according to claim 2, characterized in that: The connecting block (507) is a rectangular parallelepiped with a hollow interior and a missing lower end. A first sliding groove is provided on the right side of the upper surface of the lower mold (3), and the connecting block (507) is slidably connected to the interior of the first sliding groove.
5. The injection core-pulling mold capable of forming internal threads according to claim 2, characterized in that: The connecting rod (506) and the limiting groove (508) are both T-shaped, and the connecting rod (506) is slidably connected to the inside of the limiting groove (508).
6. The injection core-pulling mold capable of forming internal threads according to claim 2, characterized in that: The side core pulling mechanism (6) comprises a second guide column (606) and two first guide columns (602) fixed to the lower surface of the upper mold (4), a first sliding block (601) slidably connected to the inside of the first sliding groove (509), and a first side core (603) fixed to the opposite side of the two first sliding blocks (601). The upper surface of the lower mold (3) is provided with a second sliding groove (604). The side core pulling mechanism (6) also comprises a second sliding block (605) slidably connected to the inside of the second sliding groove (604), and two second side cores (607) fixed to the right side of the second sliding block (605).
7. The injection core-pulling mold capable of forming internal threads according to claim 6, characterized in that: A first sliding hole is provided on the upper surface of the first sliding block (601), and the first guide column (602) is slidably connected to the inside of the first sliding hole.
8. The injection core-pulling mold capable of forming internal threads according to claim 6, characterized in that: A second sliding hole is formed on the upper surface of the second sliding block (605), and the second guide column (606) is slidably connected to the inside of the second sliding hole.