An upper die structure for producing die-cast hardware

Abstract

The utility model provides a die -casting hardware production uses upper die structure, including base plate, fixed installation in the die plate subassembly of base plate bottom surface, be located in the die plate subassembly bottom upper forming cavity and be located in the material board of base plate top, the inner top surface of upper forming cavity is equipped with the material pushing block, and the material board is connected with the material pushing block through the connecting rod of a plurality of activities across the base plate and the die plate subassembly, and the material board still is equipped with the time delay release mechanism to make the material board be in the lifting state after die -casting die -closing, the peripheral wall of upper forming cavity still is equipped with a plurality of the friction piece of preventing hardware to separate, after die -closing in the die -casting procedure, the material board is lifted with the material pushing block together by hardware, then is limited its descent by the time delay release mechanism, therefore, before moving to the trimming procedure, the material board and the material pushing block do not exert the downward pressure to hardware, in addition to the friction piece of the peripheral wall of upper forming cavity provides the friction force for hardware, can solve the problem that hardware falls off in the moving process of upper die part.

Description

Technical Field

[0001] This utility model relates to the technical field of die-casting hardware production equipment, specifically to an upper mold structure for die-casting hardware production. Background Technology

[0002] With the advancement of mold technology, in order to save mold costs in the die casting production of hardware parts, the upper mold part used for die casting hardware parts is also used as the upper mold part of the trimming mold. During the production process, the upper mold part can be moved between the forming process and the trimming process by a robot.

[0003] However, a mold usually has multiple cavities for forming products, i.e., one mold with multiple cavities. After the die casting is completed, multiple hardware parts are connected together by the sprue material, which is relatively heavy. In addition, the upper mold part needs to be equipped with a material ejection mechanism to push the workpiece out after processing. Therefore, during the process of completing the die casting and moving to the trimming process, under the action of double pressure, the hardware product may fall off the upper mold part, which will not only interrupt the continuous production process, but also easily damage the mold. Therefore, it needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide an upper mold structure that can prevent hardware parts from falling off.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A die-casting hardware production upper mold structure includes a base plate, a template assembly fixedly installed on the bottom surface of the base plate, an upper forming cavity disposed on the bottom surface of the template assembly, and an ejector plate disposed parallel above the base plate; the outer periphery of the upper forming cavity of the template assembly is provided with a sprue cutter, and the bottom edge of the upper forming cavity also serves as an edge trimming cutter; the inner top surface of the upper forming cavity is provided with an ejector block, and the ejector plate is connected to the ejector block through several connecting rods that move through the base plate and the template assembly; the ejector plate is also provided with a delayed release mechanism so that the ejector plate is in a raised state after the die-casting mold is closed; the peripheral wall of the upper forming cavity is also provided with several friction elements to prevent the hardware from detaching.

[0007] In a preferred embodiment, a top plate is provided above the ejector plate and fixed parallel to the substrate, and the delayed release mechanism consists of a plurality of opening and closing devices vertically disposed on the top surface of the ejector plate and abutting against the bottom surface of the top plate.

[0008] In a preferred embodiment, the outer periphery of the ejector plate is provided with an upright plate that is perpendicularly fixed to the substrate. The delayed release mechanism includes a plurality of rollers arranged laterally on the periphery of the ejector plate and a plurality of elastic limiting rods arranged laterally on the upright plate. The elastic limiting rods are perpendicularly corresponding to the rollers and are in interference fit. When the ejector plate is raised, the rollers pass over the heads of the elastic limiting rods and are held above them.

[0009] In a preferred embodiment, the friction element is a vertically arranged square column, the template assembly has a notch for holding the friction element, the friction element is locked onto the template assembly, and the outer side wall of the friction element protrudes slightly from the notch.

[0010] In a preferred embodiment, the bottom end face of the friction element is higher than the bottom edge of the upper forming cavity.

[0011] In a preferred embodiment, the ejector plate and the substrate are slidably engaged by a plurality of vertical guide posts and guide sleeves.

[0012] In a preferred embodiment, the template assembly or the substrate located in the area surrounding the upper molding cavity is further provided with a plurality of elastic pins that push the sprue material downwards.

[0013] The beneficial effects of this utility model are as follows: After the die-casting process, the ejector plate is lifted by the hardware along with the ejector block, and then its descent is restricted by the delayed release mechanism. Therefore, before moving to the trimming process, the ejector plate and ejector block will not exert downward pressure on the hardware. In addition, the friction component on the peripheral wall of the upper forming cavity provides friction for the hardware, which can solve the problem of hardware falling off during the movement of the upper mold. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the longitudinal cross-sectional structure of the upper mold structure in the embodiment;

[0016] Figure 2 This is a schematic diagram of the upper molding cavity in the embodiment;

[0017] Figure 3 This is a schematic diagram of the delayed release mechanism in another embodiment. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] It should be noted that the terms indicating orientation in this application document, such as top surface, bottom surface, vertical direction, etc., are only for the purpose of providing a more intuitive description of the structure in conjunction with the accompanying drawings, and are not intended to limit the product structure.

[0020] refer to Figure 1 and Figure 2 As shown, an upper mold structure for die-casting hardware production includes a base plate 1, a template assembly 2 fixedly installed on the bottom surface of the base plate 1, an upper forming cavity 3 disposed on the bottom surface of the template assembly 2, and an ejector plate 4 disposed parallel above the base plate 1; the upper forming cavity 3 of the template assembly 2 is provided with a sprue cutter 5 on its outer periphery, and the bottom edge 31 of the upper forming cavity 3 also serves as a trimming cutter; the inner top surface of the upper forming cavity 3 is provided with an ejector block 32, and the ejector plate 4 is connected to the ejector block 32 by several connecting rods 41 that move through the base plate 1 and the template assembly 2, and the ejector plate 4 is also provided with a delayed release mechanism 6 so that the ejector plate 4 is in a raised state after the die-casting mold is closed; the peripheral wall of the upper forming cavity 3 is also provided with several friction elements 7 to prevent the hardware from detaching.

[0021] During die casting, after the mold is closed, the upper forming cavity 3 is used to form the part of the hardware except for the bottom surface. After the mold is closed in the die casting process, the ejector plate 4 and the ejector block 32 are connected into an integral structure by the connecting rod 41. The two are lifted together by the hardware and then the delayed release mechanism 6 restricts their descent. Therefore, before moving to the trimming process, the ejector plate 4 and the ejector block 32 will not exert downward pressure on the hardware. In addition, the friction element 7 on the periphery of the upper forming cavity 3 provides friction for the hardware, which can solve the problem of the hardware falling off during the movement of the upper mold.

[0022] In a preferred embodiment, a top plate 8, parallel and fixed to the substrate 1, is further provided above the ejector plate 4. The delayed release mechanism 6 consists of several opening and closing devices vertically disposed on the top surface of the ejector plate 4 and abutting against the bottom surface of the top plate 8. That is, when the ejector plate 4 is raised, the top plate 8 limits and compresses the opening and closing devices to a compressed state.

[0023] refer to Figure 3 In another embodiment, the outer periphery of the ejector plate 4 is provided with a vertical plate 11 that is fixed perpendicularly to the substrate 1. The delayed release mechanism 6 includes a plurality of rollers 61 arranged laterally on the periphery of the ejector plate 4, and a plurality of elastic limiting rods 62 arranged laterally on the vertical plate 11. The elastic limiting rods 62 are perpendicularly corresponding to the rollers 61 and are in interference fit. When the ejector plate 4 is raised, the rollers 61 pass over the heads of the elastic limiting rods 62 and are held above them. After the edge trimming process is completed, the ejector plate 4 can be lowered by external force to push out the hardware.

[0024] Continue to refer to Figure 1 and Figure 2In a preferred embodiment, the friction element 7 is a vertically arranged square column. The template assembly 2 has a notch for holding the friction element 7, and the friction element 7 is locked onto the template assembly 2. The outer side wall 71 of the friction element 7 slightly protrudes from the notch. During the die-casting process, the friction element 7 retracts into the notch, making its outer wall flush with the side wall of the upper forming cavity 3.

[0025] Furthermore, the bottom surface of the friction element 7 is higher than the bottom edge 31 of the upper forming cavity 3. This prevents the lower cutting blade from touching the friction element 7 during the trimming process.

[0026] In a preferred embodiment, the ejector plate 4 and the substrate 1 are slidably engaged by a plurality of vertical guide posts and guide sleeves 42. This enhances the stability of the ejector plate 4 during lifting and lowering.

[0027] In a preferred embodiment, the template assembly 2 or the substrate 1 in this embodiment is further provided with a plurality of elastic pins 9 in the area located on the outer periphery of the upper molding cavity 3 to push the sprue material downwards. That is, in the trimming process, the elastic pins 9 can automatically push out the sprue material cut off from the outer periphery of the hardware.

[0028] The above description does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A die-casting hardware production upper mold structure, characterized in that: The device includes a substrate, a template assembly fixedly mounted on the bottom surface of the substrate, an upper forming cavity disposed on the bottom surface of the template assembly, and an ejector plate disposed parallel above the substrate. The upper forming cavity of the template assembly is provided with a sprue cutter on its outer periphery, and the bottom edge of the upper forming cavity also serves as an edge-cutting cutter. An ejector block is provided on the inner top surface of the upper forming cavity. The ejector plate is connected to the ejector block via several connecting rods that move through the substrate and the template assembly. The ejector plate is also provided with a delayed release mechanism to ensure that it is in a raised state after die-casting mold closing. The peripheral wall of the upper forming cavity is also provided with several friction elements to prevent hardware parts from detaching.

2. The upper mold structure for die-casting hardware production according to claim 1, characterized in that: Above the ejector plate is a top plate fixed parallel to the substrate. The delayed release mechanism consists of several opening and closing devices vertically disposed on the top surface of the ejector plate and abutting the bottom surface of the top plate.

3. The upper mold structure for die-casting hardware production according to claim 1, characterized in that: The outer periphery of the ejector plate is provided with a vertical plate that is fixed perpendicularly to the substrate. The delayed release mechanism includes a plurality of rollers arranged laterally on the periphery of the ejector plate and a plurality of elastic limiting rods arranged laterally on the vertical plate. The elastic limiting rods are perpendicularly corresponding to the rollers and are in interference fit. When the ejector plate is raised, the rollers pass over the head of the elastic limiting rods and are held above them.

4. The upper mold structure for die-casting hardware production according to claim 1, characterized in that: The friction element is a vertically arranged square column. The template assembly has a notch for holding the friction element. The friction element is locked onto the template assembly, and the outer side wall of the friction element protrudes slightly from the notch.

5. The upper mold structure for die-casting hardware production according to claim 4, characterized in that: The bottom surface of the friction element is higher than the bottom edge of the upper molding cavity.

6. The upper mold structure for die-casting hardware production according to claim 1, characterized in that: The ejector plate and the substrate are slidably engaged by a number of vertical guide posts and guide sleeves.

7. The upper mold structure for die-casting hardware production according to claim 1, characterized in that: The template assembly or the substrate located in the area around the outer periphery of the upper molding cavity is also provided with several elastic pins that push the sprue material downwards.

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