CN219947147U - A gear core-pulling mechanism for an injection mold - Google Patents

Abstract

The utility model relates to a gear core-pulling mechanism of an injection mold in the technical field of injection molds. It includes a base. Two sliding rods are slidingly connected inside the base. One ends of the two sliding rods are fixedly connected to a mold base and a mold base respectively. The mold top plate has a gear groove inside the mold base, a retaining groove is provided at the bottom of the inner wall of the gear groove, a connecting screw is fixedly connected to the inner wall of the retaining groove, and a core is provided inside the retaining groove. Through the combined use of the base, sliding rod, mold base, mold top plate, gear groove, retaining groove, connecting screw, core, connecting screw hole, baffle and adjustment assembly, it is easy to rotate by rotating the core and baffle. Under the action of the thread, the core body and the baffle plate are pushed up and down. The baffle plate can facilitate the molded injection molded gear to be pushed out of the inside of the gear groove, thereby facilitating the rapid extraction of the core body and realizing the detachment of the molded injection molded gear. mold effect.

Description

A gear core-pulling mechanism for an injection mold

Technical field

The utility model relates to the technical field of injection molds, and in particular to a gear core-pulling mechanism of an injection mold.

Background technique

Injection mold is a tool for producing plastic products; it is also a tool that gives plastic products complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to injecting the heated and melted plastic into the mold cavity at high pressure from the injection molding machine. After cooling and solidifying, the molded product is obtained. When the gears are processed and manufactured, they are generally injection molded through an injection mold.

When injection molding the gear, the injection mold in the prior art needs to add a core to the center of the injection gear to form a through hole in the center of the gear. , it is necessary to dismantle the core inside the injection mold at the same time, so that the center and core of the injection molding gear can be extracted more quickly, and the demoulding efficiency between the injection molding gear and the injection molding core can be improved. For this reason, we propose an injection mold Gear core pulling mechanism.

Utility model content

In view of the above problems, the present invention provides a gear core-pulling mechanism for an injection mold, which is capable of quickly replacing and disassembling the core of the injection mold, thereby avoiding the difficulty of disassembly between the injection gear and the core.

The technical solution of the utility model is: a gear core-pulling mechanism of an injection mold, including a base. Two sliding rods are slidingly connected inside the base. One ends of the two sliding rods are fixedly connected to the mold base and the mold respectively. The top plate has a gear groove inside the mold base, a retaining groove is provided at the bottom of the inner wall of the gear groove, a connecting screw is fixedly connected to the inner wall of the retaining groove, and a core is provided inside the retaining groove. A connecting screw hole is provided at the bottom of the core body, one end of the connecting screw rod is threadedly connected inside the connecting screw hole, a baffle is fixedly connected to the bottom of the core body, and an adjustment assembly is provided inside the base.

In a further technical solution, an annular groove is provided at the bottom of the inner wall of the gear groove, and two arc-shaped grooves are provided inside the annular groove. The interior of the arc-shaped groove is slidably connected with an arc-shaped protrusion, and two The top ends of the arc-shaped protrusions are fixedly connected to an annular top plate, and an ejection assembly is provided inside the arc-shaped groove.

In a further technical solution, the adjustment assembly includes a drive motor fixedly connected to the top of the base. The output shaft of the drive motor is fixedly connected to a bidirectional screw through a coupling. The surface of the bidirectional screw is threaded with two threads. Adjusting screw sleeves, one side of the two adjusting screw sleeves are fixedly connected to the sliding rod.

In a further technical solution, the ejection assembly includes an ejection screw rotatably connected to the bottom of the arc-shaped protrusion. One end of the ejection screw is threadedly connected to the inside of the mold base, and one end of the ejection screw is fixedly connected. Has adjustment handle.

In a further technical solution, a positioning rod is fixedly connected to the bottom of the mold top plate, a positioning hole is opened inside the core, and one end of the positioning rod is inserted into the inside of the positioning hole.

In a further technical solution, a limiting through hole is provided on the upper surface of the base, a limiting rod is fixedly connected to the bottom of the mold base, and one end of the limiting rod is slidably connected inside the limiting through hole.

In a further technical solution, a sliding opening is provided on one side of the base, and one ends of the two sliding rods are slidably connected inside the sliding opening.

The beneficial effects of this utility model are:

1. Through the combined use of the base, sliding rod, mold base, mold top plate, gear groove, retaining groove, connecting screw, core, connecting screw hole, baffle and adjustment component, it is easy to rotate by rotating the core and baffle. , under the action of the thread, the core body and the baffle are pushed up and down, and the baffle can facilitate the molded injection gear to be pushed out of the gear groove, thereby facilitating the rapid extraction of the core and the molded injection gear at the same time. Perform demoulding;

2. Through the combined use of annular grooves, arc-shaped grooves, arc-shaped ridges, arc-shaped top plates and ejection components, the formed gear can be easily ejected from the gear groove and the formed gear can be quickly removed. The position of the mold base can be easily limited through the limiting through hole and the limiting rod.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

Figure 2 is a cross-sectional view of the internal structure of the mold base according to the embodiment of the present invention;

Figure 3 is a schematic structural diagram of the adjustment component according to the embodiment of the present utility model;

Figure 4 is a cross-sectional view of the internal structure of the core body according to the embodiment of the present invention;

Figure 5 is an enlarged view of the structure at point A in Figure 1 according to the embodiment of the present invention.

Explanation of reference symbols:

1. Base; 2. Slide rod; 3. Mold base; 4. Mold top plate; 5. Gear groove; 6. Retaining groove; 7. Connecting screw; 8. Core; 9. Connecting screw hole; 10. Baffle; 11. Annular groove; 12. Arc groove; 13. Arc ridge; 14. Annular top plate; 15. Driving motor; 16. Two-way screw; 17. Adjusting screw sleeve; 18. Ejection screw; 19. Adjusting handle; 20. Positioning hole; 21. Limit through hole; 22. Limit rod; 23. Sliding port.

Detailed ways

The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

Example:

As shown in Figures 1 to 5, a gear core-pulling mechanism for an injection mold includes a base 1. Two sliding rods 2 are slidingly connected to the interior of the base 1. One ends of the two sliding rods 2 are respectively fixedly connected to a mold base 3. And the mold top plate 4 is used for injection molding gear molding. A gear groove 5 is provided inside the mold base 3. A retaining groove 6 is provided at the bottom of the inner wall of the gear groove 5. The inner wall of the retaining groove 6 is fixedly connected with a connecting screw 7. There is a core 8 inside the groove 6, and a connecting screw hole 9 is provided at the bottom of the core 8, which is used to quickly connect the core 8 and the mold base 3. One end of the connecting screw 7 is threadedly connected to the connecting screw. Inside the hole 9, a baffle 10 is fixedly connected to the bottom of the core 8, and an adjustment component is provided inside the base 1. The adjustment component includes a drive motor 15 fixedly connected to the top of the base 1 for providing power, and the output of the drive motor 15 The shaft is fixedly connected with a two-way screw 16 through a coupling, which is used to adjust between the mold base 3 and the mold top plate 4. The surface of the two-way screw 16 is threaded with two adjusting screw sleeves 17, and one of the two adjusting screw sleeves 17 is threaded. Both sides are fixedly connected to the slide bar 2. The bottom of the mold top plate 4 is fixedly connected to a positioning rod. A positioning hole 20 is provided inside the core 8 for positioning between the mold base 3 and the mold top plate 4. One end of the positioning rod Insert into the inside of the positioning hole 20.

The working principle of the above technical solution is as follows:

By starting the driving motor 15, the two-way screw 16 is driven to rotate, and the two adjusting screw sleeves 17 are driven to slide in opposite directions under the action of the threads, thereby facilitating the friction between the sliding rod 2, the mold base 3 and the mold top plate 4. and separation function, which can facilitate the demoulding of the molded injection molded gear. When the core body is extracted from the center of the molded gear, by rotating the core body 8 and the baffle 10, under the action of the thread, the The core 8 and the baffle 10 slide upward, and the baffle 10 can facilitate the molded injection gear to be pushed out of the gear groove 5, thereby facilitating the rapid extraction of the core 8 and simultaneously demoulding the molded injection gear. effect.

In another embodiment, as shown in Figures 1, 2 and 5, an annular groove 11 is provided at the bottom of the inner wall of the gear groove 5, and two arc-shaped grooves 12 are provided inside the annular groove 11. There are arc-shaped protrusions 13 slidingly connected inside. The tops of the two arc-shaped protrusions 13 are fixedly connected with an annular top plate 14 for ejecting the formed gear. An ejection component is provided inside the arc-shaped groove 12 , the ejection assembly includes an ejection screw 18 that is rotatably connected to the bottom of the arc-shaped protrusion 13, which is used to push the annular top plate 14 to slide. One end of the ejection screw 18 is threadedly connected to the inside of the mold base 3, and the ejection screw 18 is An adjustment handle 19 is fixedly connected to one end, a sliding port 23 is provided on one side of the base 1, and one end of the two sliding rods 2 is slidingly connected inside the sliding port 23.

By rotating the adjusting handle 19, the ejection screw 18 is driven to rotate, and the arc-shaped protrusion 13 and the annular top plate 14 are pushed upwards under the action of the thread, thereby facilitating the ejection of the formed gear from the gear groove 5, achieving Quickly demould formed gears.

In another embodiment, as shown in Figure 1, a limiting through hole 21 is opened on the upper surface of the base 1, a limiting rod 22 is fixedly connected to the bottom of the mold base 3, and one end of the limiting rod 22 is slidably connected to the limiting through hole. 21 interior.

One end of the limiting rod 22 is slidably connected to the inside of the limiting through hole 21 , so that the position of the mold base 3 can be easily limited.

The above embodiments only express specific implementation modes of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of the present invention. It should be noted that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims (7)

1. A gear core-pulling mechanism for an injection mold, including a base (1), characterized in that: two sliding rods (2) are slidingly connected inside the base (1), and the two sliding rods (2) One end of the mold base (3) and the mold top plate (4) are respectively fixedly connected. A gear groove (5) is provided inside the mold base (3), and a retaining groove (5) is provided at the bottom of the inner wall of the gear groove (5). 6), the inner wall of the retaining groove (6) is fixedly connected with a connecting screw (7), a core body (8) is provided inside the retaining groove (6), and a connecting screw is provided at the bottom of the core body (8). The screw hole (9), one end of the connecting screw rod (7) is threadedly connected inside the connecting screw hole (9), the bottom of the core body (8) is fixedly sleeved with a baffle (10), and the base ( 1) There is an adjustment component inside. 2. A gear core-pulling mechanism for an injection mold according to claim 1, characterized in that: an annular groove (11) is provided at the bottom of the inner wall of the gear groove (5), and the inside of the annular groove (11) Two arc-shaped grooves (12) are provided, and arc-shaped protrusions (13) are slidingly connected to the interior of the arc-shaped grooves (12). The tops of the two arc-shaped protrusions (13) are fixedly connected with annular The top plate (14) is provided with an ejection component inside the arc-shaped groove (12). 3. A gear core-pulling mechanism for an injection mold according to claim 1, characterized in that: the adjustment assembly includes a drive motor (15) fixedly connected to the top of the base (1), and the drive motor (15) The output shaft is fixedly connected with a two-way screw (16) through a coupling. The surface of the two-way screw (16) is threaded with two adjusting screw sleeves (17). One of the two adjusting screw sleeves (17) Both sides are fixedly connected with the sliding rod (2). 4. A gear core-pulling mechanism for an injection mold according to claim 2, characterized in that: the ejection assembly includes an ejection screw (18) rotatably connected to the bottom of the arc-shaped protrusion (13), and the One end of the ejection screw (18) is threadedly connected inside the mold base (3), and one end of the ejection screw (18) is fixedly connected with an adjustment handle (19). 5. A gear core-pulling mechanism for an injection mold according to claim 1, characterized in that: a positioning rod is fixedly connected to the bottom of the mold top plate (4), and a positioning rod is provided inside the core body (8). hole (20), one end of the positioning rod is inserted into the inside of the positioning hole (20). 6. A gear core-pulling mechanism for an injection mold according to claim 1, characterized in that: a limited through hole (21) is provided on the upper surface of the base (1), and the bottom of the mold base (3) A limiting rod (22) is fixedly connected, and one end of the limiting rod (22) is slidably connected inside the limiting through hole (21). 7. A gear core-pulling mechanism for an injection mold according to claim 1, characterized in that: a sliding port (23) is provided on one side of the base (1), and the two sliding rods (2) One end is slidably connected inside the slide port (23).