CN219926766U - Arc core pulling mechanism of injection mold - Google Patents

Abstract

The utility model discloses an arc core pulling mechanism of an injection mold, which belongs to the technical field of injection mold manufacturing, and comprises the following components: the device comprises an upper female die, a lower female die, an arc-shaped core, a core connecting rod, a core sliding block, a telescopic rod and a power machine; the upper female die and the lower female die are arranged in a relatively openable and closable manner, and can form an injection molding cavity of a product after being combined. And then the arc-shaped mold core is movably arranged between the upper female die and the lower female die to be used as a cavity of an injection molding product. The cavity of a product of a round pipe or the like is arc-shaped, and the arc-shaped inner wall of the modified cavity is matched with the radian of the outer wall of the arc-shaped core, so that the power machine can drive the core sliding block and the core connecting rod through driving the telescopic rod, and the arc-shaped core can be attached to the inner wall of the cavity to perform arc core pulling. Therefore, the utility model solves the technical problem of how to make the circular tube product realize circular arc lateral core pulling.

Description

An arc core-pulling mechanism for injection molds

Technical field

The utility model relates to the technical field of injection mold manufacturing, and in particular to an arc core-pulling mechanism for an injection mold.

Background technique

With the rapid development of science and technology, people's quality of life is getting higher and higher. Various daily necessities, automotive supplies, electronic products, etc. have entered thousands of households, among which plastic products account for the majority. Reports in recent years show that the output value of my country's polymer materials industry is as high as 5.58 trillion yuan, which is mainly used in automobiles, rail transit, aerospace, intelligent equipment and other fields. Plastic is a polymer compound formed by addition polymerization or polycondensation melt polymerization. Its main component is resin. The properties of the plastic can be changed by adding various additives, and it can be formed into a specified shape under high temperature and pressure, and the plastic can be formed into a specified shape under high temperature and pressure. The molded state can maintain its shape after cooling to normal temperature. Plastic products are increasingly used in daily life and industry because of their advantages such as light weight, corrosion resistance, low cost, and strong plasticity. The quality of a set of injection molds directly determines the appearance and performance of plastic products, which puts high standards and requirements on the quality of the molds. Especially for increasingly complex product shapes, the structural design of injection molds is a difficult point.

Based on this, Chinese patent CN111775415A discloses a side core-pulling injection mold, which includes a fixed mold and a movable mold. The movable mold is provided with a horizontal chute, and a core-pulling slider is slidably fitted in the horizontal chute. The inner side of the core-pulling slider There is an insert pointing to the side of the core; there is a hinge shaft on the outside of the core-pulling slider, and a swing rod is fitted in the gap on the hinge shaft. The damping ring; the end of the swing rod away from the hinge axis is equipped with a linkage pin; one side of the fixed mold is connected to a vertical rectangular frame through a protruding mounting block, and the linkage pin slides and fits in the vertical rectangular frame; each vertical rectangular frame It consists of a T-shaped top pressure plate and a U-shaped frame. There is a mechanism between the inner vertical plate of the T-shaped top pressure plate and the mounting block for changing the distance between the outer transverse plate of the T-shaped top pressure plate and the mounting block to clamp or loosen the U-shaped frame. Adjustment screw. The side-core-pulling injection mold can realize the functions of adjustable side-core-pulling distance and adjustable time interval between side-core-pulling and mold-opening actions.

However, the side-pulling core injection mold disclosed in the prior art cannot meet the side-pulling core requirements of arc products. Specifically, current injection molding products have processing requirements for lateral core pulling of arc inner cavities, and the side cores need to be extracted from the product after successful injection molding. As for the existing side core pulling solution, during the mold opening process, the fixed mold is stationary and the movable mold descends, and then the linkage pin is driven by the swing rod to descend from the top edge of the vertical rectangular frame to the bottom edge. During this process, due to the effect of the damping ring, the swing rod will overcome gravity to maintain the swing angle, so that the core-pulling slider will not slide in advance until the linkage pin drops to the bottom edge of the vertical rectangular frame. At this time, the injection molding machine continues to open the mold and lower the movable mold, driving the inner end of the swing bar to continue to fall, while the outer end of the swing bar cannot continue to fall because the linkage pin is hooked with the bottom edge of the vertical rectangular frame, causing the swing bar to move along the outer end. Swing, thereby pulling the core-pulling slider outward, causing the insert block to move horizontally outward to achieve the side core-pulling action, while the injection molding machine continues to lower the movable mold and further pulls the insert block outward. It can be seen from the accompanying drawings that the action process of this side core pulling is a linear core pulling action trajectory. If the product to be injection molded is a circular tube-shaped product with a curvature, the core pulling structure will be stuck. And the demoulding action cannot be completed smoothly.

Utility model content

Based on this, it is necessary to provide an arc core pulling mechanism for injection molding molds in order to solve the technical problem of achieving arc side core pulling for circular tube products.

An arc core-pulling mechanism for an injection mold, which includes: an upper concave mold, a lower concave mold, an arc-shaped core, a core connecting rod, a core slider, a telescopic rod and a power machine; the upper concave mold and the lower concave mold are The concave mold is opened and closed relative to each other; the concave mold has an arc slide and a swing slot; the arc core has an arc sliding part and a swing arm; the arc sliding part and the arc slide Movably connected; the swing arm is movably connected with the swing slot. The core connecting rod is connected to the end of the arc-shaped sliding part; the core slider is connected to the core connecting rod; the telescopic rod is connected to the core slider and the core connecting rod respectively. Power machine; the power machine is drivingly connected to the telescopic rod.

Further, an upper template is provided above the upper concave mold.

Furthermore, a lower template is provided below the lower die.

Furthermore, a linear core and an inclined guide post are provided between the upper template and the lower template.

Furthermore, the lower template is provided with a linear slide.

Furthermore, the linear core is movably connected to the linear slide, and the linear core is disposed on the side of the lower die.

Furthermore, the inclined guide post is movably connected to the linear core, and the inclined guide post is connected to the upper template.

Furthermore, a side connecting frame is provided on the side of the lower template; the end of the side connecting frame is fixedly connected to the power machine.

Furthermore, the side connecting frame has a connecting groove.

Furthermore, the telescopic rod is arranged in the connecting groove; the core slider is movably connected with the connecting groove.

To sum up, the arc core-pulling mechanism of the injection mold of the present invention is respectively provided with an upper concave mold, a lower concave mold, an arc-shaped core, a core connecting rod, a core slider, a telescopic rod and a power machine; The upper concave mold and the lower concave mold can be opened and closed relative to each other, and the upper concave mold and the lower concave mold can form an injection molding cavity of the product after being combined. The arc-shaped core is then movably disposed between the upper concave mold and the lower concave mold to serve as a cavity for the injection molded product. Among them, the mold cavity of round pipes and other types of products is arc-shaped, and the arc-shaped inner wall of the modified cavity matches the curvature of the outer wall of the arc-shaped core. Therefore, the power machine provided can drive the The telescopic rod drives the core slider and the core connecting rod, so that the arc-shaped core can fit the inner wall of the mold cavity to perform an arc-shaped core pulling action. Therefore, the arc core-pulling mechanism of the injection mold of the present invention solves the technical problem of how to achieve arc-side core-pulling of circular tube products.

Description of the drawings

Figure 1 is a partially exploded structural schematic diagram of an arc core-pulling mechanism of an injection mold according to the present invention;

Figure 2 is a schematic diagram of the exploded structure of an arc core-pulling mechanism of an injection mold according to the present invention;

Figure 3 is a schematic structural diagram of an arc core-pulling mechanism of an injection mold according to the present invention.

Implementation

In order to make the above objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation modes of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to facilitate a thorough understanding of the present invention. However, the present utility model can be implemented in many other ways different from those described here. Those skilled in the art can make similar improvements without violating the connotation of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed below. limit.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" ", "radial direction", "circumferential direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply what is meant. Devices or components must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In this utility model, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements, unless otherwise Clear limits. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

It should be noted that when an element is referred to as being "mounted" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Please refer to Figures 1 to 3 together. The arc core-pulling mechanism of an injection mold of the present invention includes: an upper concave mold 1, a lower concave mold 2, an arc core 3, a core connecting rod 4, and a core slider. 5. Telescopic rod 6 and power machine 7; the upper die 1 and the lower die 2 are opened and closed relative to each other; the lower die 2 has an arc slide 201 and a swing slot 202; the arc-shaped The core 3 has an arc sliding part 301 and a swing arm 302; the arc sliding part 301 is movably connected to the arc slide 201; the swing arm 302 is movably connected to the swing slot 202. The core connecting rod 4 is connected to the end of the arc-shaped sliding part 301; the core slider 5 is connected to the core connecting rod 4; the telescopic rod 6 is connected to the core respectively. The slider 5 is drivingly connected to the power machine 7; the power machine 7 is drivingly connected to the telescopic rod 6.

Specifically, when the arc core-pulling mechanism of the injection mold of the present invention is in the working process, the upper concave mold 1 and the lower concave mold 2 are driven close to each other by an external power mechanism. After the upper concave mold 1 and the lower concave mold 2 are close to each other and closed, a molding inner cavity is formed between them, and the end of the arc-shaped core 3 is inserted into the molding cavity. But after completing an injection molding process, the product is molded in the molding cavity. The upper concave mold 1 and the lower concave mold 2 are separated from each other. Then, the power machine 7 is powered to drive the telescopic rod 6 to drive the core slider 5 to move in the direction of the lower die 2 . The arc-shaped slide 201 has an inner slide that is tangent to the outer arc of the part to be injected; and when the core slider 5 moves, it drives the core connecting rod 4 so that it drives the arc-shaped slide. The part 301 is drawn around the swing arm 302 and along the arcuate slide 201 from the product; during the core pulling action, the swing arm 302 can move in the space formed by the swing slot 202 . Therefore, the arc core-pulling mechanism of the injection mold of the present invention can realize the lateral core-pulling action of circular tube products; and avoids the technical problem that the existing linear core-pulling structure cannot perform core-pulling of arc-shaped products. More specifically, in a set of injection molds, a variety of arc core-pulling mechanisms can be provided, as long as the layout size of the lower concave mold 2 is increased.

Further, an upper mold plate 8 is provided above the upper concave mold 1; a lower mold plate 9 is disposed below the lower concave mold 2; a linear core 10 is disposed between the upper mold plate 8 and the lower mold plate 9. And the inclined guide post 11; the lower template 9 is provided with a linear slide 901; the linear core 10 is movably connected to the linear slide 901, and the linear core 10 is arranged on the side of the lower die 2 . The inclined guide post 11 is movably connected to the linear core 10 , and the inclined guide post 11 is connected to the upper template 8 . Specifically, the upper concave mold 1 can be sleeved and disposed in the upper mold plate 8; the lower concave mold 2 can be sleeved and disposed in the lower mold plate 9; thus, the upper mold plate 8 and the upper mold plate 8 can be connected to each other. The following templates 9 can be relatively far apart or close to each other. The inclined guide post 11 is a structure arranged obliquely in the upper template 8; and the lower part of the inclined guide post 11 is also movably connected with the execution core 10; and when the upper template 8 is outside When the upper template 8 is driven by the power mechanism and approaches the lower template 9, the upper template 8 drives the inclined guide post 11. When the inclined guide post 11 moves, the linear core 10 is moved along the linear slide 901. Guided close to the side of the lower die 2; thus, when the product is in the injection molding stage, the linear core 10 and the arcuate core 3 jointly support the inner cavity of the product. Then, when the upper mold plate 8 is driven away from the lower mold plate 9 by the external power mechanism, the inclined guide column 11 is driven upward to guide the linear core 10 to move along the linear slide 901. away from the lower concave mold 2 to realize the side linear core pulling action. That is to say, the arc core pulling mechanism of the injection mold of the present invention can simultaneously realize the action requirements of linear core pulling and arc core pulling.

Furthermore, a side connecting frame 12 is provided on the side of the lower formwork 9; the end of the side connecting frame 12 is fixedly connected to the power machine 7. The side connecting frame 12 has a connecting groove 1201; the telescopic rod 6 is disposed in the connecting groove 1201; the core slider 5 is movably connected to the connecting groove 1201. Specifically, the side connecting frame 12 facilitates the fixed connection of the power motor 7 to the side of the mold; so that the motor 7 drives the movement of the arc-shaped core 3 .

To sum up, the arc core pulling mechanism of the injection mold of the present invention is respectively provided with an upper concave mold 1, a lower concave mold 2, an arc core 3, a core connecting rod 4, a core slider 5, and a telescopic rod. 6 and a power machine 7; the upper concave mold 1 and the lower concave mold 2 can be opened and closed relative to each other, and the upper concave mold 1 and the lower concave mold 2 can form an injection molding cavity of the product after being combined. The arc-shaped core 3 is then movably disposed between the upper concave mold 1 and the lower concave mold 2 to serve as a cavity for the injection molded product. Among them, the mold cavity of round pipes and other types of products is arc-shaped, and the arc-shaped inner wall of the modified cavity matches the curvature of the outer wall of the arc-shaped core 3. Therefore, the power machine 7 provided can be driven by The telescopic rod 6 drives the core slider 5 and the core connecting rod 4, so that the arc-shaped core 3 can fit the inner wall of the mold cavity to perform an arc-shaped core pulling action. Therefore, the arc core-pulling mechanism of the injection mold of the present invention solves the technical problem of how to achieve arc-side core-pulling of circular tube products.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-mentioned embodiments only express several implementation modes of the present invention. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. 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. Therefore, the protection scope of the utility model patent should be determined by the appended claims.

Claims (10)

1. An injection mold arc core-pulling mechanism, characterized in that it includes: an upper concave mold (1), a lower concave mold (2), an arc-shaped core (3), a core connecting rod (4), a mold The core slider (5), the telescopic rod (6) and the power machine (7); the upper concave mold (1) and the lower concave mold (2) are opened and closed relative to each other; the lower concave mold (2) has an arc The arc-shaped slideway (201) and the swing slot (202); the arc-shaped core (3) has an arc-shaped sliding part (301) and a swing arm (302); the arc-shaped sliding part (301) and the The arc slide (201) is movably connected; the swing arm (302) is movably connected with the swing slot (202); the core connecting rod (4) is with the arc sliding part (301) The ends are connected; the core slider (5) is connected to the core connecting rod (4); the telescopic rod (6) is connected to the core slider (5) and the power machine (7) respectively. ); the power machine (7) is drivingly connected to the telescopic rod (6). 2. An injection mold arc core-pulling mechanism according to claim 1, characterized in that: an upper template (8) is provided above the upper concave mold (1). 3. An injection mold arc core-pulling mechanism according to claim 2, characterized in that: a lower template (9) is provided below the lower concave mold (2). 4. An injection mold arc core-pulling mechanism according to claim 3, characterized in that: a linear core (10) and an inclined core are provided between the upper template (8) and the lower template (9). Guide post (11). 5. An arc core-pulling mechanism for an injection mold according to claim 4, characterized in that the lower template (9) is provided with a linear slide (901). 6. An injection mold arc core-pulling mechanism according to claim 5, characterized in that: the linear core (10) is movably connected to the linear slide (901), and the linear core (10) ) is arranged on the side of the lower die (2). 7. An injection mold arc core-pulling mechanism according to claim 6, characterized in that: the inclined guide column (11) is movably connected to the linear core (10), and the inclined guide column (11) ) is connected to the upper template (8). 8. An injection mold arc core-pulling mechanism according to claim 7, characterized in that: a side connecting frame (12) is provided on the side of the lower template (9); The end is fixedly connected to the power machine (7). 9. An injection mold arc core-pulling mechanism according to claim 8, characterized in that: the side connecting frame (12) has a connecting groove (1201). 10. An injection mold arc core pulling mechanism according to claim 9, characterized in that: the telescopic rod (6) is arranged in the connecting groove (1201); the core slider (5 ) is movably connected to the connecting groove (1201).