Multi-sliding-block ejector-pin-free die structure for zinc alloy die castings

Abstract

The utility model discloses a multi-slider thimble-free die structure for zinc alloy die castings, which comprises a left slider, a right slider, a sky slider and a ground slider, the left slider is arranged on a left driving mechanism of a die casting machine, the right slider is arranged on a right driving mechanism of the die casting machine, the sky slider is arranged on a sky driving mechanism of the die casting machine, and the ground slider is arranged on a ground driving mechanism of the die casting machine. The ground side sliding block is arranged on a ground side driving mechanism, a left side mold is arranged on the left side sliding block, a right side mold is arranged on the right side sliding block, a top side mold is arranged on the top side sliding block, an insert fixing plate is arranged on the ground side sliding block, a ground side insert is arranged on the fixing plate, and a ground side baffle is arranged on a fixing plate of the die-casting machine; and the left side mold, the right side mold, the sky side mold, the ground side baffle and the ground side insert form a product cavity. According to the utility model, a multi-slide-block structure is adopted, the mold is closed to form a product cavity, and the ground side baffle is arranged on the ground side, so that product demolding is realized, surface abrasion caused by contact with parts is avoided, and the qualification rate of products is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of die casting, and in particular to a multi-slider ejector pinless mold structure for zinc alloy die casting. Background Technology

[0002] Traditional zinc alloy die casting involves separating the moving and fixed molds and then ejecting the parts using ejector pins. During production, burrs are easily generated at the ejector pin holes, and ejector pins are prone to breakage. It is also common to encounter situations where there are requirements for the surface finish of the parts or limitations on the size of the parts, making it impossible to add more ejector pins. Furthermore, traditional equipment has high energy consumption, long production cycles, and difficult mold maintenance and repair. It cannot produce structural parts with requirements for the appearance of the parts or limitations on the size of the parts. It can only meet the requirements for traditional zinc alloy die castings with simple structures or uniform wall thickness. Utility Model Content

[0003] To address the shortcomings of existing technologies, the main objective of this utility model is to overcome these deficiencies by disclosing a multi-slider, pinless die-casting mold structure for zinc alloy parts. The structure includes a left slider, a right slider, a top slider, and a bottom slider. The left slider is mounted on the left drive mechanism of the die-casting machine, the right slider on the right drive mechanism, the top slider on the top drive mechanism, and the bottom slider on the bottom drive mechanism. A left mold is mounted on the left slider, a right mold on the right slider, a top mold on the top slider, and an insert fixing plate on the bottom slider. A bottom insert is mounted on the fixing plate, and a bottom baffle is mounted on the fixing plate of the die-casting machine. The left mold, right mold, top mold, bottom baffle, and bottom insert form the product cavity.

[0004] Furthermore, the cross-sections of the left mold, the right mold, the top mold, and the ground baffle are convex.

[0005] Furthermore, a flow channel is provided horizontally on the right mold, and the flow channel is located below the product cavity.

[0006] Furthermore, the right mold has a protruding positioning pin, and the left slider has a corresponding positioning hole.

[0007] Furthermore, a first groove is provided on the upper surface of the left mold, and a second groove is provided on the upper surface of the right mold. The first groove and the second groove are joined together to form a first positioning groove. A first positioning block that cooperates with the first positioning groove is provided on the top mold.

[0008] Furthermore, a second positioning block and a second positioning groove are provided at the apex corner of the mating surfaces of the left mold and the right mold to cooperate with each other.

[0009] Furthermore, oil grooves are provided on the surfaces of the left slider, the right slider, the top slider, and the bottom slider.

[0010] Furthermore, a limiting groove is recessed on the surface of the ground-side baffle.

[0011] The beneficial effects achieved by this utility model are:

[0012] This invention employs a multi-slider structure to achieve mold closing and product cavity formation. A ground-side baffle is used to shield parts and runner components, preventing surface wear from contact and significantly improving product yield. The use of multi-structure positioning and fit improves the accuracy of the fit between the left mold, right mold, top mold, and ground-side baffle, further enhancing product yield. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the mold closing state of a multi-slider ejector pinless mold structure for zinc alloy die casting according to this utility model;

[0014] Figure 2 This is a schematic diagram of the mold opening state of a multi-slider ejector pinless mold structure for zinc alloy die casting according to this utility model;

[0015] Figure 3 This is a schematic diagram of the demolding state of a multi-slider ejector pinless mold structure for zinc alloy die casting according to this utility model;

[0016] Figure 4 This is a schematic diagram of the ground-side assembly.

[0017] Figure 5 for Figure 4 Enlarged view of A in the middle;

[0018] Figure 6 This is a schematic diagram of the three-dimensional structure of the left side.

[0019] Figure 7 This is a schematic diagram of the three-dimensional structure of the right side.

[0020] Figure 8 This is a schematic diagram of the three-dimensional structure of the top side section;

[0021] Figure 9 This is a schematic diagram of the three-dimensional structure of the ground-side portion;

[0022] The attached figures are labeled as follows:

[0023] 1. Left slider, 2. Right slider, 3. Top slider, 4. Ground slider, 5. Ground baffle, 6. Left mold, 7. Top mold, 8. Right mold, 9. Insert fixing plate, 10. Ground insert, 11. Part, 12. Oil groove, 51. Limiting groove, 62. Positioning hole, 63. First groove, 64. Second positioning block, 71. First positioning block, 81. Positioning pin, 82. Second groove, 83. Second positioning groove, 84. Flow channel. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] A multi-slider ejector-free mold structure for zinc alloy die casting, such as Figures 1-9 As shown, the die-casting machine includes a left slider 1, a right slider 2, a top slider 3, and a bottom slider 4. The left slider 1 is mounted on the left drive mechanism of the die-casting machine, and its horizontal movement is controlled by the left drive mechanism. The right slider 2 is mounted on the right drive mechanism of the die-casting machine, and its horizontal movement is controlled by the right drive mechanism. The top slider 3 is mounted on the top drive mechanism of the die-casting machine, and its vertical movement is controlled by the top drive mechanism. The bottom slider 4 is mounted on the bottom drive mechanism, and its vertical movement is driven by the bottom drive mechanism. A left mold 6 is mounted on the left slider 1, a right mold 8 is mounted on the right slider 2, a top mold 7 is mounted on the top slider 3, and an insert fixing plate 9 is mounted on the bottom slider 4. A bottom insert 10 is mounted on the fixing plate 9, and a bottom baffle 5 is mounted on the fixing plate of the die-casting machine. The bottom baffle 5 serves as a reference positioning element. The left mold 6, top mold 7, and right mold 8 move towards the bottom baffle 5 to close the mold, forming the product cavity. During mold opening, the top mold 7, left mold 6, and right mold 8 open outwards, and the part 11 and runner are positioned on the bottom insert 11. The bottom drive mechanism drives the bottom slider 4, causing the bottom insert 10 to descend synchronously. The part 11 and runner move downwards synchronously, and the part 11 is blocked by the bottom baffle 5, thus achieving demolding of the part 11.

[0026] In one embodiment, such as Figures 1-9 As shown, the cross-sections of the left mold 6, right mold 8, top mold 7, and ground baffle 5 are convex. After the left mold 6 and right mold 8 are closed, their top and ground sides combine to form a groove that matches the protrusions of the top mold 7 and ground baffle 5, thus achieving the mold closing of the above components.

[0027] In one embodiment, such as Figures 1-9As shown, a runner 84 is horizontally arranged on the right mold 8, and the runner 84 is located below the product cavity. When the part 11 separates from the insert, the zinc alloy die-cast part formed by the runner 84 contacts the ground side baffle 5, but does not contact the part 11, and the surface of the part 11 is damaged.

[0028] In one embodiment, such as Figures 1-9 As shown, the right mold 8 has a locating pin 81 protruding, and the left slider 6 has a corresponding locating pin 62. The locating pin 81 and the locating hole 62 cooperate to ensure accurate mold closing between the left mold 6 and the right mold 8.

[0029] In one embodiment, such as Figures 1-9 As shown, a first groove 63 is provided on the upper surface of the left mold 6, and a second groove 82 is provided on the upper surface of the right mold 8. The first groove 63 and the second groove 82 are joined to form a first positioning groove. A first positioning block 71 that mates with the first positioning groove is provided on the top mold 7. Through the cooperation of the first positioning groove and the first positioning block 71, the top mold 7 can be accurately molded with the left mold 6 and the right mold 8.

[0030] In one embodiment, such as Figures 1-9 As shown, a second positioning block 64 and a second positioning groove 83 are provided at the apex corner of the mating surfaces of the left mold 6 and the right mold 8 to further improve the accuracy of mold closing between the left mold 6 and the right mold 8.

[0031] In one embodiment, such as Figures 1-9 As shown, oil grooves 12 are provided on the surfaces of the left slider 1, right slider 2, top slider 3, and bottom slider 4. These are used to improve the smoothness of movement.

[0032] In one embodiment, such as Figures 1-9 As shown, a limiting groove 51 is recessed on the surface of the ground-side baffle 5. This allows the part 11 and the flow channel component to be positioned within the limiting groove 51, causing the airflow to converge within the limiting groove 51 and blow the product away from the ground-side baffle 5.

[0033] When using this utility model, such as Figures 1-9 As shown, when the multi-slider pinless mold is installed in the die-casting machine, the left slider 1 drives the left mold 6 to move back 30mm; the right slider 2 drives the right mold 8 to move back 30mm; and the top slider 3 drives the top mold 7 to move back 15mm. At this time, the ground slider 4, the insert fixing plate 9, the part 11 and the ground insert 10 maintain their current positions.

[0034] Because the ground-side baffle 5 is affected by the positioning of the die-casting machine, it remains in its original position. At this time, the ground-side slider 4 drives the insert fixing plate 9 to move 26mm towards the ground. The part 11 and the die-cast part formed by the flow channel (hereinafter referred to as the flow channel part) are simultaneously driven downward by the insert fixing plate 9 by 26mm. When the part 11 and the flow channel part contact the ground-side baffle 5, the ground-side slider 4 drives the insert fixing plate 9 to continue moving 20mm towards the ground. The part 11 and the flow channel part are blocked by the ground-side baffle 5, and the ground-side slider insert fixing plate 9 completely detaches from the part 11. The die-casting machine starts the blowing function and blows the part 11 onto the conveyor belt. At this time, one die-casting cycle is completed.

[0035] Among them, the ground side baffle 5, as a core component, not only serves as the positioning reference for the mold, but also features a pinless demolding structure. By using the surface contact method of the ground side baffle 5, displacement of part 11 and runner components is prevented, ensuring that the product will not be damaged by impact, and also providing greater stability during demolding.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present utility model.

Claims

1. A multi-slider ejector-free mold structure for zinc alloy die casting, characterized in that, The die casting machine includes a left slider, a right slider, a top slider, and a bottom slider. The left slider is mounted on the left drive mechanism of the die casting machine, the right slider is mounted on the right drive mechanism of the die casting machine, the top slider is mounted on the top drive mechanism of the die casting machine, and the bottom slider is mounted on the bottom drive mechanism. A left mold is mounted on the left slider, a right mold is mounted on the right slider, a top mold is mounted on the top slider, and an insert fixing plate is mounted on the bottom slider. A bottom insert is mounted on the fixing plate, and a bottom baffle is mounted on the fixing plate of the die casting machine. The left mold, the right mold, the top mold, the bottom baffle, and the bottom insert form a product cavity.

2. The multi-slider ejector-free mold structure for zinc alloy die casting according to claim 1, characterized in that, The cross-sections of the left mold, the right mold, the top mold, and the ground baffle are convex.

3. The multi-slider ejector-less mold structure for zinc alloy die casting according to claim 1, characterized in that, A flow channel is provided horizontally on the right mold, and the flow channel is located below the product cavity.

4. The multi-slider ejector-free mold structure for zinc alloy die casting according to claim 1, characterized in that, The right mold has a protruding positioning pin, and the left slider has a corresponding positioning hole.

5. The multi-slider ejector-less mold structure for zinc alloy die casting according to claim 1, characterized in that, The upper surface of the left mold is provided with a first groove, and the upper surface of the right mold is provided with a second groove. The first groove and the second groove are joined together to form a first positioning groove. The top mold is provided with a first positioning block that cooperates with the first positioning groove.

6. The multi-slider ejector-free mold structure for zinc alloy die casting according to claim 1, characterized in that, The left mold and the right mold have a second positioning block and a second positioning groove at the top corner of their mating surfaces.

7. The multi-slider ejector-free mold structure for zinc alloy die casting according to claim 1, characterized in that, Oil grooves are provided on the surfaces of the left slider, the right slider, the top slider, and the bottom slider.

8. The multi-slider ejector-free mold structure for zinc alloy die casting according to claim 1, characterized in that, The surface of the ground-side baffle is recessed with a limiting groove.

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