Die-casting die with slide secondary core-pulling mechanism

Abstract

The utility model provides a die-casting die with a slide secondary core-pulling mechanism, which relates to the technical field of dies and comprises a movable die, a fixed die and a secondary core-pulling mechanism, a cavity is formed between the movable die and the fixed die, and the secondary core-pulling mechanism is arranged between the fixed die and the movable die. The secondary core-pulling mechanism comprises a slide, a profiling block and an inclined guide column, the slide is arranged between the fixed mold and the movable mold in a sliding manner, the profiling block is fixed on one side of the slide, and one side of the profiling block is connected with the cavity; the inclined guide pillar is fixed on the movable mold; a guide pillar hole matched with the inclined guide pillar is formed in the slide; a mounting seat is arranged on one side of the fixed mold, an oil cylinder is arranged on the mounting seat, and the output end of the oil cylinder is fixedly connected with the slide. And the fixed mold is also provided with a limiting structure for limiting the slide. The mold can reduce the demolding difficulty and ensure smooth demolding of a product; and the demolding difficulty of the product is reduced, so that the requirement on the oil cylinder is reduced, the cylinder diameter of the required oil cylinder is reduced, the mold delivery time is shortened, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a die-casting mold with a sliding position secondary core-pulling mechanism. Background Art

[0002] In the field of mold manufacturing, especially in the design and application of die-casting molds, products with certain shapes and structures often require lateral parting to achieve smooth demolding. These products often have a very small internal demolding angle and a long core pulling distance, but due to the limitations of the product structure, it is impossible to increase the demolding angle, which poses a great challenge to mold design. Traditional mold demolding methods use cylinder core pulling, but in this case, due to the high clamping force of the product, the required cylinder diameter must also be increased accordingly. When the cylinder diameter reaches a non-standard size, special customization is usually required, which not only increases ordering time and cost, but also further extends the mold delivery time, adversely affecting the project schedule.

[0003] Therefore, there is an urgent need for a new die-casting mold that can overcome the above-mentioned defects to reduce the manufacturing cost of the die-casting mold and improve the manufacturing efficiency. Utility Model Content

[0004] In order to overcome the problems existing in the related art, one of the purposes of the present utility model is to provide a die-casting mold with a sliding secondary core-pulling mechanism. The mold can reduce the difficulty of demolding through the secondary core-pulling mechanism to ensure that the product is smoothly demolded; and the reduced difficulty of demolding the product will reduce the demand for the cylinder, help reduce the required cylinder diameter, shorten the mold delivery time, and reduce costs.

[0005] A die-casting mold with a sliding position secondary core-pulling mechanism, comprising:

[0006] A movable mold and a fixed mold, wherein a cavity is formed between the movable mold and the fixed mold;

[0007] A secondary core-pulling mechanism is provided between the fixed mold and the movable mold, and includes a slide, a profiling block, and an inclined guide column. The slide is slidably provided between the fixed mold and the movable mold, the profiling block is fixed on one side of the slide, and one side of the profiling block is in contact with the cavity; the inclined guide column is fixed on the movable mold, and a guide column hole adapted to the inclined guide column is provided in the slide;

[0008] A mounting seat is provided on one side of the fixed mold, an oil cylinder is provided on the mounting seat, and an output end of the oil cylinder is fixedly connected to the slide;

[0009] The fixed mold is also provided with a limiting structure, which is fixed on the fixed mold. After the movable mold and the fixed mold are closed, the top of the limiting structure is connected with the sliding position.

[0010] In a preferred technical solution of the present invention, two inclined guide pillars are provided, and the axes of the two inclined guide pillars are parallel to each other;

[0011] Two guide post holes are provided on the slide, and each guide post hole corresponds to an oblique guide post;

[0012] When the fixed mold and the movable mold are opened, the inclined guide pillar drives the slide to move, so that the slide drives the profiling block to move a set distance.

[0013] In a preferred technical solution of the present invention, the profiling block includes a profiling portion and a connecting portion that are connected to each other, the connecting portion is fixedly connected to the slide, and the edge of the profiling portion is provided with a rounded corner.

[0014] In a preferred technical solution of the present invention, a plurality of water channels are provided in the profiling block, and the water channels are used to transport cooling water.

[0015] In a preferred technical solution of the present invention, the profiling portion includes a first protrusion and a second protrusion, both of which protrude from one side of the connecting portion, and the protruding height of the first protrusion is greater than the protruding height of the second protrusion;

[0016] The water channel extends from the connecting portion into the first protrusion and the second protrusion.

[0017] In a better technical solution of the present invention, the limiting structure includes a limiting column and a locking piece; a mounting hole is provided in the fixed mold, the limiting column is provided in the mounting hole, a limiting step is provided on the limiting column, and the limiting step protrudes outward from the side wall of the limiting column; the locking piece is provided on one side of the limiting column, and the bottom of the locking piece is connected to the top of the limiting step.

[0018] In a preferred technical solution of the present invention, two limiting structures are provided, and the two limiting structures are symmetrical with respect to the middle of the slide.

[0019] In a preferred technical solution of the present invention, a limiting protrusion is provided on the top of the limiting column, the surface of the limiting protrusion is arranged in an arc shape, and a limiting groove adapted to the limiting protrusion is provided on the slide.

[0020] In the preferred technical solution of the present utility model,

[0021] A T-shaped slot is provided on the slide, and a T-shaped connecting block is provided at the output end of the oil cylinder, and the T-shaped connecting block is clamped in the T-shaped slot;

[0022] A guide hole is provided in the mounting seat, and a guide rod is provided between the profiling block and the guide hole. One end of the guide rod is fixedly connected to the guide hole, and the other end thereof passes through the guide hole.

[0023] The beneficial effects of the utility model are:

[0024] The utility model provides a die-casting mold with a slide and secondary core-pulling mechanism. The mold includes a movable mold, a fixed mold, and a secondary core-pulling mechanism. A cavity is formed between the movable mold and the fixed mold, and the secondary core-pulling mechanism is disposed between the fixed mold and the movable mold. The secondary core-pulling mechanism includes a slide, a profiling block, and an inclined guide post. The slide is slidably disposed between the fixed mold and the movable mold. The profiling block is fixed to one side of the slide, and one side of the profiling block is in contact with the cavity. When the slide moves, the profiling block moves with it. The inclined guide post is fixed to the movable mold. A guide post hole is provided in the slide that is compatible with the inclined guide post. When the mold is opened, the inclined guide post can drive the slide to move in a predetermined direction. A mounting seat is provided on one side of the fixed mold, and an oil cylinder is disposed on the mounting seat. The output end of the oil cylinder is fixedly connected to the slide. A limiting structure is also provided on the fixed mold to limit the slide. The limiting structure is used to ensure that the slide does not excessively press downward and damage the inclined guide post during use of the mold. During use, when the movable and fixed molds open, the inclined guide pillars move the slide a certain distance, creating a gap between the contour block and the product. At this point, the contour block has partially detached from the product, reducing the product's holding force. Subsequently, the hydraulic cylinder begins to operate, driving the slide to continue moving, completing the remaining core-pulling stroke and allowing the product to be smoothly ejected from the mold cavity. In cases where the mold is parted laterally, with a small draft angle and a long core-pulling distance, the secondary core-pulling mechanism can assist in smooth product ejection, avoiding mold damage or product deformation caused by excessive product holding force. Because the secondary core-pulling mechanism reduces the difficulty of product ejection, it also reduces the need for hydraulic cylinders. This helps reduce the required cylinder diameter, thereby reducing the overall size of the mold, lowering production costs, and shortening mold delivery time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of a die-casting mold with a sliding secondary core-pulling mechanism provided in an embodiment of the present application;

[0026] Figure 2 A cross-sectional view of a die-casting mold with a sliding secondary core-pulling mechanism provided in an embodiment of the present application;

[0027] Figure 3 A perspective view of a secondary core pulling mechanism provided in an embodiment of the present application without an inclined guide pin;

[0028] Figure 4 A schematic diagram of a water channel provided in an embodiment of the present application provided in a contoured block;

[0029] Figure 5 This is a schematic diagram of the limiting structure provided in the embodiment of the present application being set in the fixed mold.

[0030] Reference numerals:

[0031] 1. Secondary core-pulling mechanism; 11. Profiling block; 111. Profiling portion; 1111. First protrusion; 1112. Second protrusion; 112. Connecting portion; 113. Waterway; 12. Slide; 121. Guide post hole; 122. T-slot; 123. Limiting groove; 13. Inclined guide post; 2. Limiting structure; 21. Limiting post; 211. Limiting step; 212. Limiting protrusion; 22. Locking member; 100. Fixed mold; 110. Mounting seat; 120. Cylinder; 1201. T-shaped connecting block; 130. Guide rod. DETAILED DESCRIPTION

[0032] The following describes preferred embodiments of the present invention in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0033] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the utility model. As used in this utility model and the appended claims, the singular forms "a," "the," and "the" are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0034] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0035] In the field of mold manufacturing, especially in the design and application of die-casting molds, products with certain shapes and structures often require lateral parting to achieve smooth demolding. These products often have a very small internal demolding angle and a long core pulling distance, but due to the limitations of the product structure, it is impossible to increase the demolding angle, which poses a great challenge to mold design. Traditional mold demolding methods use cylinder core pulling, but in this case, due to the high clamping force of the product, the required cylinder diameter must also be increased accordingly. When the cylinder diameter reaches a non-standard size, special customization is usually required, which not only increases ordering time and cost, but also further extends the mold delivery time, adversely affecting the project schedule.

[0036] Based on this, the present application provides a die-casting mold with a sliding secondary core-pulling mechanism.

[0037] See also Figures 1 to 5 As shown, a die-casting mold with a sliding position secondary core-pulling mechanism includes:

[0038] A movable mold and a fixed mold 100 are provided, and a cavity is formed between the movable mold and the fixed mold 100; the cavity is used for product molding.

[0039] The secondary core-pulling mechanism 1 is arranged between the fixed mold 100 and the movable mold. The secondary core-pulling mechanism 1 includes a slide 12, a profiling block 11, and an inclined guide post 13. The slide 12 is slidably arranged between the fixed mold 100 and the movable mold. The profiling block 11 is fixed to one side of the slide 12, and one side of the profiling block 11 is connected to the mold cavity. The inclined guide post 13 is fixed to the movable mold. The slide 12 is provided with a guide post hole 121 adapted to the inclined guide post 13. The secondary core-pulling mechanism 1 is arranged between the fixed mold 100 and the movable mold and is used to assist the product in smoothly ejecting from the mold when the product is laterally parted, the demoulding angle is small, and the core-pulling distance is long. One side of the profiling block 11 is connected to the mold cavity and becomes part of the mold cavity. The profiling block 11 can move together with the slide 12 to assist the product in ejecting from the mold cavity.

[0040] A mounting seat 110 is provided on one side of the fixed mold 100, and a cylinder 120 is provided on the mounting seat 110. The output end of the cylinder 120 is fixedly connected to the slide 12; when the mold is opened, the cylinder 1208 can drive the slide 124 to complete the remaining core pulling stroke.

[0041] The fixed mold 100 is further provided with a limiting structure 2 , which is fixed to the fixed mold 100 . After the movable mold and the fixed mold 100 are closed, the top of the limiting structure 2 is connected to the slide 12 .

[0042] The limiting structure 2 is used to support the slide 12 at the bottom to prevent the slide 12 from being excessively pressed down under its own weight and breaking the inclined guide pillars 13 .

[0043] In the aforementioned die-casting mold with a slide and secondary core-pulling mechanism, when the movable mold and fixed mold 100 are opened, the inclined guide column 13 drives the slide 12 to move a certain distance, which creates a certain gap between the profiling block 11 and the product. At this point, the profiling block 11 has partially separated from the product, reducing the product's holding force. Subsequently, the cylinder 120 begins to operate, driving the slide 12 to continue moving, completing the remaining core-pulling stroke, allowing the product to be smoothly ejected from the mold cavity. When the mold is laterally parted, with a small demolding angle and a long core-pulling distance, the secondary core-pulling mechanism 1 can assist in the smooth ejection of the product, avoiding problems such as mold damage or product deformation caused by excessive product holding force. Because the secondary core-pulling mechanism 1 reduces the difficulty of product ejection, it also reduces the demand for the cylinder 120. This helps to reduce the required cylinder diameter, thereby reducing the overall size of the mold, reducing production costs, and shortening the mold delivery time.

[0044] Furthermore, two inclined guide pillars 13 are provided, and the axes of the two inclined guide pillars 13 are parallel to each other;

[0045] Two guide post holes 121 are provided on the slide 12, and each guide post hole 121 corresponds to an inclined guide post 13;

[0046] When the fixed mold 100 and the movable mold are opened, the inclined guide pillars 13 drive the slide 12 to move, so that the slide 12 drives the profiling block 11 to move a set distance.

[0047] The slide 12 is slidably arranged between the fixed mold 100 and the movable mold so that it can move smoothly in a predetermined direction when the mold is opened. The profiling block 11 is fixed to one side of the slide 12, and its shape matches the cavity to ensure that when the slide 12 moves, it can drive the profiling block 11 to move together, thereby assisting the product to be smoothly ejected from the cavity. In order to drive the slide 12 to move more stably, two inclined guide pillars 13 are specially provided in this embodiment, and the axes of the two inclined guide pillars 13 are parallel to each other. Correspondingly, two guide pillar holes 121 are provided on the slide 12, and each guide pillar hole 121 corresponds to an inclined guide pillar 13. This design enables the inclined guide pillars 13 to drive the slide 12 to move more evenly, improves the stability and reliability of the mold, and avoids problems such as damage or deformation of the mold due to uneven force. During the mold opening process, the inclined guide pillars 13 will first drive the slide 12 to move a certain distance (for example, 3 mm). At this point, a certain gap (e.g., 0.05mm) forms between the slide 12 and the product, reducing the product's grip. Subsequently, the hydraulic cylinder 120 begins to operate, driving the slide 12 to continue moving and complete the remaining core-pulling stroke. During this process, the contour block 11 moves accordingly, further assisting the product in ejecting from the mold cavity.

[0048] Furthermore, the profiling block 11 includes a profiling portion 111 and a connecting portion 112 that are interconnected. The connecting portion 112 is fixedly connected to the slide 12. The edges of the profiling portion 111 are provided with rounded corners to prevent scratches or damage to the product during the demolding process. The profiling block 11 is provided with a plurality of water channels 113 for transporting cooling water. Furthermore, the profiling portion 111 includes a first protrusion 1111 and a second protrusion 1112. The first protrusion 1111 and the second protrusion 1112 both protrude from one side of the connecting portion 112, and the protruding height of the first protrusion 1111 is greater than the protruding height of the second protrusion 1112.

[0049] The water channel 113 extends from the connecting portion 112 to the first protrusion 1111 and the second protrusion 1112 .

[0050] These water channels 113 are used to transport cooling water to cool the contour block 11 during mold operation. By optimizing the design of the water channels 113, the cooling water can be evenly distributed throughout the contour block 11, thereby improving mold cooling and product quality. The first and second protrusions 1111 and 1112 allow the contour block 111 to better adapt to the shape and structure of the mold cavity, effectively assisting in the smooth ejection of the product.

[0051] Furthermore, the limiting structure 2 includes a limiting post 21 and a locking member 22. The fixed mold 100 is provided with a mounting hole, the limiting post 21 is disposed in the mounting hole, and the limiting post 21 is provided with a limiting step 211, which protrudes outward from the side wall of the limiting post 21. The locking member 22 is disposed on one side of the limiting post 21, and the bottom of the locking member 22 is connected to the top of the limiting step 211. More specifically, two limiting structures 2 are provided, and the two limiting structures 2 are symmetrical with respect to the center of the slide 12.

[0052] The two limiting structures 2 support the slide 12 from the bottom, which can improve the stability of the slide 12. The limiting structure 2 of the present application locks the limiting column 21 in the installation hole through the locking member 22, which can ensure the installation stability of the limiting column 21, thereby improving the overall stability and safety of the mold.

[0053] Furthermore, a limiting protrusion 212 is provided on the top of the limiting column 21 , and the surface of the limiting protrusion 212 is arranged in an arc shape. A limiting groove 123 adapted to the limiting protrusion 212 is provided on the slide 12 .

[0054] The limiting protrusion 212 and the limiting groove 123 are engaged with each other, which can support the slide 12 without restricting the movement of the slide 12, thereby ensuring the normal use of the mold.

[0055] Furthermore, a T-shaped slot 122 is provided on the slide 12, and a T-shaped connecting block 1201 is provided at the output end of the oil cylinder 120, and the T-shaped connecting block 1201 is clamped in the T-shaped slot 122;

[0056] A guide hole is provided in the mounting seat 110 , and a guide rod 130 is provided between the profiling block 11 and the guide hole. One end of the guide rod 130 is fixedly connected to the guide hole, and the other end thereof passes through the guide hole.

[0057] The T-slot 122 on the slide 12 mates with the T-shaped connecting block 1201 at the output end of the cylinder 120. This snap-fit connection ensures a more stable connection between the cylinder 120 and the slide 12, preventing it from loosening. During the mold release process, the power from the cylinder 120 is stably and accurately transmitted to the slide 12, thereby improving the mold's stability and reliability. The guide rod 130, located between the contour block 11 and the guide hole, not only provides positioning and guidance but also limits the displacement and wobbling of the contour block 11 during movement, making its trajectory more stable and controllable, thereby improving the mold's release accuracy and efficiency.

[0058] While various embodiments of the present invention have been described above, the above descriptions are illustrative and non-exhaustive, and are not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A die-casting mold with a sliding secondary core-pulling mechanism, characterized in that: include: A movable mold and a fixed mold (100), wherein a cavity is formed between the movable mold and the fixed mold (100); A secondary core-pulling mechanism (1), wherein the secondary core-pulling mechanism (1) is arranged between the fixed mold (100) and the movable mold, and the secondary core-pulling mechanism (1) comprises a slide (12), a profiling block (11) and an inclined guide column (13); the slide (12) is slidably arranged between the fixed mold (100) and the movable mold, the profiling block (11) is fixed on one side of the slide (12), and one side of the profiling block (11) is connected to the mold cavity; the inclined guide column (13) is fixed on the movable mold, and a guide column hole (121) adapted to the inclined guide column (13) is provided in the slide (12); A mounting seat (110) is provided on one side of the fixed mold (100), an oil cylinder (120) is provided on the mounting seat (110), and an output end of the oil cylinder (120) is fixedly connected to the slide (12); A limiting structure (2) is also provided on the fixed mold (100), and the limiting structure (2) is fixed on the fixed mold (100). After the movable mold and the fixed mold (100) are closed, the top of the limiting structure (2) is connected to the sliding position (12).

2. The die-casting mold with a sliding secondary core-pulling mechanism according to claim 1, characterized in that: Two inclined guide pillars (13) are provided, and the axes of the two inclined guide pillars (13) are parallel to each other; Two guide post holes (121) are provided on the slide (12), and each guide post hole (121) corresponds to an inclined guide post (13); When the fixed mold (100) and the movable mold are opened, the inclined guide column (13) drives the slide (12) to move, so that the slide (12) drives the profiling block (11) to move a set distance.

3. The die-casting mold with a sliding secondary core-pulling mechanism according to claim 1, characterized in that: The profiling block (11) comprises a profiling portion (111) and a connecting portion (112) connected to each other, the connecting portion (112) is fixedly connected to the slide (12), and the edge of the profiling portion (111) is provided with a rounded corner.

4. The die-casting mold with a sliding secondary core-pulling mechanism according to claim 3, characterized in that: A plurality of water channels (113) are provided in the profiling block (11), and the water channels (113) are used for conveying cooling water.

5. The die-casting mold with a sliding secondary core-pulling mechanism according to claim 4, characterized in that: The contoured portion (111) comprises a first protrusion (1111) and a second protrusion (1112), wherein the first protrusion (1111) and the second protrusion (1112) both protrude from one side of the connecting portion (112), and the protruding height of the first protrusion (1111) is greater than the protruding height of the second protrusion (1112); The water channel (113) extends from the connecting portion (112) to the first protrusion (1111) and the second protrusion (1112).

6. The die-casting mold with a sliding position secondary core-pulling mechanism according to any one of claims 1 to 5, characterized in that: The limiting structure (2) comprises a limiting column (21) and a locking member (22); a mounting hole is provided in the fixed mold (100), the limiting column (21) is provided in the mounting hole, a limiting step (211) is provided on the limiting column (21), and the limiting step (211) protrudes outward from the side wall of the limiting column (21); the locking member (22) is provided on one side of the limiting column (21), and the bottom of the locking member (22) is connected to the top of the limiting step (211).

7. The die-casting mold with a sliding secondary core-pulling mechanism according to claim 6, characterized in that: Two of the limiting structures (2) are provided, and the two limiting structures (2) are symmetrical with respect to the middle of the row position (12).

8. The die-casting mold with a sliding secondary core-pulling mechanism according to claim 6, characterized in that: A limiting protrusion (212) is provided on the top of the limiting column (21), the surface of the limiting protrusion (212) is arranged in an arc shape, and a limiting groove (123) adapted to the limiting protrusion (212) is provided on the slide (12).

9. The die-casting mold with a sliding position secondary core-pulling mechanism according to any one of claims 1 to 5, characterized in that: A T-shaped slot (122) is provided on the slide (12), a T-shaped connecting block (1201) is provided at the output end of the oil cylinder (120), and the T-shaped connecting block (1201) is clamped in the T-shaped slot (122); A guide hole is provided in the mounting seat (110), and a guide rod (130) is provided between the profiling block (11) and the guide hole. One end of the guide rod (130) is fixedly connected to the guide hole, and the other end thereof passes through the guide hole.

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