Die casting trimming die

Abstract

The utility model belongs to the technical field of die casting machining, and particularly relates to a die casting trimming die. The die casting trimming die comprises an upper die and a lower die, the lower die comprises a lower die positioning plate, and the upper surface structure of the lower die positioning plate is matched with a die casting and used for containing the die casting. The upper die comprises an upper die positioning plate, the lower surface structure of the upper die positioning plate is matched with a die casting, and a plurality of edge cutting knife edges are arranged on the periphery of the upper die positioning plate. When the upper die and the lower die are assembled, a water gap and a cinder ladle of a die casting can be removed through one-time punching, and production is efficient. And when the water gap and the cinder ladle are cut off, deformation caused in the punching process can be avoided, and a certain shape correction effect on the deformed die casting is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of die casting processing, and in particular relates to a die casting trimming die. Background Art

[0002] In the aluminum alloy die-casting industry, in order to ensure the molding process and quality of die-castings, it is necessary to set nozzles and several slag bags around the die-castings, and then remove the nozzles and slag bags to obtain die-casting products. At present, in the production process, the slag bags are usually knocked off with a rubber hammer, and then the nozzles are sawed off with a sawing machine.

[0003] In the process of knocking out the slag bag with a rubber hammer, the die-casting with thicker wall thickness is not easy to cause poor deformation of the product during the knocking process. However, when the overall wall thickness of the die-casting is thin (the average wall thickness is less than 2.5mm), it is easy to cause poor deformation of the die-casting during the knocking process with a rubber hammer. When the water outlet is removed by the sawing machine, in order to ensure that the sawing machine does not damage the die-casting during the sawing process, a large distance is usually required to ensure that the sawing machine does not damage the die-casting. After sawing, there are more water outlets left, which need to be removed by manual grinding later, and the production efficiency is low. Utility Model Content

[0004] The utility model aims to provide a die-casting trimming die to solve the technical problem in the prior art that poor deformation is easily caused in the process of removing slag bags and nozzles of die-castings.

[0005] The present application provides a die-casting trimming die, comprising an upper die and a lower die; the lower die comprises a lower die positioning plate, the upper surface structure of which is adapted to the die-casting and is used to place the die-casting; the upper die comprises an upper die positioning plate, the lower surface structure of which is adapted to the die-casting; and a plurality of trimming edges are arranged around the upper die positioning plate, which are used to cut off the sprue and slag bag when the upper die and the lower die are closed.

[0006] In one embodiment of the present application, the lower die also includes: a lower die bottom plate, used to support and fix the lower die positioning plate; a lower die fixing plate, used to connect and fix with the stamping equipment; a lower die support block, arranged between the lower die fixing plate and the lower die bottom plate.

[0007] In one embodiment of the present application, the upper mold also includes: an upper mold base plate, used to fix the trimming edge, and a side of the upper mold base plate facing the upper mold positioning plate is provided with a plurality of punches passing through the upper mold positioning plate; an upper mold fixing plate, used to be connected and fixed to the stamping equipment; an upper mold support block, arranged between the upper mold fixing plate and the upper mold base plate; an upper mold positioning plate rebound assembly, arranged in the space enclosed by the upper mold support block, the upper mold fixing plate and the upper mold base plate, and connected to the upper mold positioning plate.

[0008] In one embodiment of the present application, a plurality of the trimming blades are respectively arranged on the periphery of the upper mold positioning plate, and are respectively detachably connected to the upper mold bottom plate.

[0009] In one embodiment of the present application, the upper mold positioning plate rebound assembly includes: a mounting plate, which is arranged in the space enclosed by the upper mold support block, the upper mold fixing plate and the upper mold bottom plate; a plurality of connecting columns, whose upper ends are connected to the mounting plate and whose lower ends pass through the upper mold bottom plate and are connected to the upper mold positioning plate; and a plurality of ejection springs, whose upper ends are connected to the upper mold fixing plate and whose lower ends are against the mounting plate.

[0010] In one embodiment of the present application, guide columns are respectively provided on the four corners of the bottom plate of the lower mold; and

[0011] The four corners of the upper mold fixing plate are respectively provided with guide sleeves for inserting guide columns.

[0012] In one embodiment of the present application, a plurality of lower mold support columns are further provided on the lower mold base plate; and upper mold support columns corresponding to the lower mold support columns are further provided on the upper mold fixing plate; wherein when the cutting is completed, the lower mold support columns are against the corresponding upper mold support columns.

[0013] In one embodiment of the present application, a nozzle support column and a support spring sleeved on the outer periphery of the nozzle support column are also provided on the bottom plate of the lower mold.

[0014] The beneficial effects of the utility model are as follows: the die-casting trimming die of the present application comprises an upper die and a lower die; the lower die comprises a lower die positioning plate, the upper surface structure of which is adapted to the die-casting and is used to place the die-casting; the upper die comprises an upper die positioning plate, the lower surface structure of which is adapted to the die-casting, and a plurality of trimming edges are arranged around the upper die positioning plate; the sprue and slag bag of the die-casting can be removed by punching once when the upper die and the lower die are closed, so that production is efficient; and while cutting off the sprue and the slag bag, not only can deformation caused by the punching process be avoided, but also a certain correction effect can be exerted on the deformed die-casting.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of a die casting trimming mold in a preferred embodiment of the utility model when the mold is not closed;

[0019] Figure 2 It is a schematic diagram of the die-casting trimming mold closing of a preferred embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional view of a die-casting trimming die of a preferred embodiment of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of a lower mold of a preferred embodiment of the utility model;

[0022] Figure 5 It is a three-dimensional diagram of an upper mold of a preferred embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of an upper die of a preferred embodiment of the utility model with the upper die positioning plate hidden.

[0024] In the figure:

[0025] Slag bag 1, die casting 2, sprue 3, lower die fixing plate 4, lower die support block 5, lower die bottom plate 6, lower die positioning plate 7, guide column 11, lower die support column 13, sprue support column 18, support spring 16, upper die fixing plate 31, guide sleeve 32, upper die bottom plate 33, upper die support block 34, upper die support column 35, upper die positioning plate rebound assembly 36, mounting plate 361, connecting column 362, ejector spring 363, upper die positioning plate 38, trimming blade 40, punch 80. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The present application provides a die casting trimming die, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0028] The trimming die for die castings is mainly composed of an upper die and a lower die. The main function of the upper die is to arrange the trimming blade and the punch, and the main function of the lower die is to support the die casting. The lower die is fixed on the bottom plate of the stamping equipment (such as a hydraulic press), and the lower die does not move. The upper die is fixed on the template on the stamping equipment. The upper die moves through the up and down movement of the template on the stamping equipment, and the water inlet and slag bag are cut off by the pressure of the stamping equipment and the trimming blade and the punch on the trimming die.

[0029] See also Figure 1 , Figure 2 , Figure 3 In one embodiment, the die casting trimming mold includes an upper mold and a lower mold; the lower mold includes a lower mold positioning plate 7, whose upper surface structure is adapted to the die casting 2 and is used to place the die casting 2; the upper mold includes an upper mold positioning plate 38, whose lower surface structure is adapted to the die casting 2; and a plurality of trimming edges 40 are arranged around the upper mold positioning plate 38, which are used to cut off the sprue 3 and the slag bag 1 when the upper mold and the lower mold are closed.

[0030] See also Figure 4 As shown, in this embodiment, optionally, the lower mold further includes: a lower mold base plate 6 , a lower mold fixing plate 4 and a lower mold support block 5 , and the lower mold support block 5 is arranged between the lower mold fixing plate 4 and the lower mold base plate 6 .

[0031] Specifically, the lower die fixing plate 4 is used for connection and fixation with the stamping equipment; the lower die support block 5 is used to match the movable stroke of the stamping equipment and increase the height of the lower die part; the lower die bottom plate 6 is used to support and fix the lower die positioning plate 7; the lower die positioning plate 7 is used to place and fix the die-casting with a sprue and a slag bag, and the structure of the lower die positioning plate 7 is designed to imitate the structure of the die-casting to ensure that the product is not deformed during the punching process; the principle of the profiling design: the structure of the lower die positioning plate 7 is designed to increase the structural outer dimensions of the die-casting by 0.3-0.5mm, and the punching of the internal hole of the product is reduced by 0.2-0.5mm on one side according to the structure of the die-casting.

[0032] See also Figure 3 , Figure 5 and Figure 6As shown, the upper die also includes: an upper die bottom plate 33, used to fix the trimming edge 40, and a plurality of punches 80 passing through the upper die positioning plate 38 are provided on the side of the upper die bottom plate 33 facing the upper die positioning plate 38; an upper die fixing plate 31, used for connection and fixation with the stamping equipment; an upper die support block 34, arranged between the upper die fixing plate 31 and the upper die bottom plate 33; an upper die positioning plate rebound assembly 36, arranged in the space enclosed by the upper die support block 34, the upper die fixing plate 31 and the upper die bottom plate 33, and connected to the upper die positioning plate 38.

[0033] In this embodiment, the punch needle 80 can be used to cut off the partition produced by die casting in the internal round hole or square hole of the die casting; the slag bag and the water outlet around the product are connected to the product, and the trimming blade 40 can ensure that the overall force of the product is uniform during the punching process, and there will be no shortage of materials.

[0034] In this embodiment, preferably, a plurality of the trimming blades 40 are respectively arranged on the periphery of the upper mold positioning plate 38 , and are respectively detachably connected to the upper mold bottom plate 33 .

[0035] In this embodiment, there are multiple cutting edges 40; the segmented detachable design is adopted, which has the advantages that the position of the cutting edge can be adjusted; when a cutting edge is damaged, only one of the cutting edges needs to be replaced, and the entire cutting edge does not need to be replaced, which saves costs. In addition, the cutting edge needs to undergo a heat treatment process, and the hardness after heat treatment needs to reach HRC55-HRC60, which can increase the service life of the cutting edge and improve the sharpness of the edge.

[0036] See also Figure 3 Preferably, the upper mold positioning plate rebound assembly 36 includes: a mounting plate 361, which is arranged in the space enclosed by the upper mold support block 34, the upper mold fixing plate 31 and the upper mold bottom plate 33; a plurality of connecting columns 362, whose upper ends are connected to the mounting plate 361, and whose lower ends pass through the upper mold bottom plate 33 and are connected to the upper mold positioning plate 38; and a plurality of ejection springs 363, whose upper ends are connected to the upper mold fixing plate 31, and whose lower ends are against the mounting plate 361.

[0037] In one application scenario, during the descent of the upper die, the bottom surface of the upper die positioning plate 38 contacts the die casting first, and then the ejector spring 363 is gradually compressed; the upper die continues to descend, and then the punch needle 80 and the trimming blade 40 cut off the sprue and slag bag; after the cutting is completed, the upper die rises, and the ejector spring 363 gradually rebounds, driving the upper die positioning plate 38 to move downward relative to the punch needle 80 and the trimming blade 40, so as to remove the slag bag adhering to the punch needle 80 and the trimming blade 40.

[0038] See also Figure 2 , Figure 4 and Figure 5As shown, preferably, guide columns 11 are respectively provided on the four corners of the lower mold base plate 6; and guide sleeves 32 for inserting the guide columns 11 are respectively provided on the four corners of the upper mold fixing plate 31.

[0039] In this embodiment, when the mold is closed, the guide sleeve 32 inserted into the guide column 11 can ensure that the upper mold always moves along the direction constrained by the guide sleeve 32 during the up and down movement, thereby ensuring the processing accuracy and consistency.

[0040] Furthermore, a plurality of lower mold support columns 13 are provided on the lower mold base plate 6; and upper mold support columns 35 corresponding to the lower mold support columns 13 are provided on the upper mold fixing plate 31; wherein after the cutting is completed, the lower mold support columns 13 are abutted against the corresponding upper mold support columns 35.

[0041] In this embodiment, when the upper mold part moves downward through the stamping equipment and moves to a certain distance, the lower mold support column 13 and the corresponding upper mold support column 35 abut against each other, preventing the upper mold part from continuing to move downward, thereby preventing the upper mold part from moving beyond the set distance and causing the product to be scrapped.

[0042] See also Figure 4 Preferably, the lower mold bottom plate 6 is also provided with a nozzle support column 18 and a support spring 16 sleeved on the outer periphery of the nozzle support column 18 .

[0043] In this embodiment, since the sprue is heavy, elastic support is used to prevent the die casting from tipping over when placed in the trimming die. Also, during the downward movement of the upper die, the sprue can move downward as the force increases, preventing the product from being deformed by force.

[0044] In one application scenario, the die casting trimming process is as follows:

[0045] 1. Place the trimming die on the stamping equipment, and fix the lower die part and the upper die part on the bottom plate of the stamping equipment and the template of the stamping equipment respectively by screws;

[0046] 2. Adjust the working stroke of the stamping equipment. When the stamping equipment moves downward, the upper die part and the lower die part of the trimming die can be completely fitted together. When the stamping equipment moves upward, the upper die part and the lower die part are separated. The separation distance is 1.2-1.5 times the total thickness of the die casting with nozzle and slag bag;

[0047] 3. Place the die casting with the nozzle and slag bag into the trimming mold. The die casting fits the lower mold positioning plate 7. Since the weight of the nozzle is large, to prevent the die casting from tipping over after being placed in the trimming mold, please set two elastic nozzle support columns 18 below the nozzle position;

[0048] 4. Start the stamping equipment, which drives the upper die part of the trimming die to move downward. The guide column 11 of the lower die part contacts the guide sleeve 32 of the upper die part first, and the guide column 11 is inserted into the guide sleeve 32 to ensure that the direction and position are consistent each time it moves downward.

[0049] 5. The stamping equipment drives the trimming die to continue to move downward. When the trimming blade 40 contacts the die casting nozzle and slag bag, the trimming blade 40 and the punch 80 continue to move downward under the external force of the stamping equipment to cut off the die casting nozzle and slag bag.

[0050] 6. After the nozzle and slag bag are cut off, the lower die support column 13 contacts the upper die support column 35 to prevent the stamping equipment from moving down further and crushing the product;

[0051] 7. The stamping equipment drives the upper die part of the trimming die to move upward to the set position, the upper die part and the lower die part of the trimming die are separated, and the product is taken out.

[0052] In summary, the die-casting trimming mold of the utility model has high production efficiency. The sprue and slag bag of the die-casting can be removed by one punching, and it is ensured that the residue of the sprue and slag bag after punching does not exceed 0.3mm; while removing the sprue and slag bag, it can not only avoid deformation caused by the punching process, but also have a certain correction effect on the deformed die-casting.

[0053] It should be noted that the various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0054] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0055] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A die casting trimming die, characterized in that: Including upper die and lower die; The lower die comprises a lower die positioning plate, the upper surface structure of which is adapted to the die casting and is used to place the die casting; The upper die includes an upper die positioning plate, the lower surface structure of which is adapted to the die casting; and A plurality of trimming edges are arranged around the upper die positioning plate, which are used to cut off the water nozzle and the slag bag when the upper die and the lower die are closed.

2. The die casting trimming die according to claim 1, characterized in that: The lower die also includes: The lower die bottom plate is used to support and fix the lower die positioning plate; Lower die fixing plate, used for connecting and fixing with stamping equipment; The lower die support block is arranged between the lower die fixing plate and the lower die bottom plate.

3. The die casting trimming die according to claim 2, characterized in that: The upper die also includes: The upper die bottom plate is used to fix the trimming edge, and a plurality of punches passing through the upper die positioning plate are arranged on one side of the upper die bottom plate facing the upper die positioning plate; Upper die fixing plate, used for connecting and fixing with stamping equipment; An upper die support block is arranged between the upper die fixing plate and the upper die bottom plate; The upper die positioning plate rebound component is arranged in a space enclosed by the upper die support block, the upper die fixing plate and the upper die bottom plate, and is connected to the upper die positioning plate.

4. The die casting trimming die according to claim 3, characterized in that: The plurality of trimming blades are respectively arranged on the periphery of the upper die positioning plate and are respectively detachably connected to the upper die bottom plate.

5. The die casting trimming die according to claim 3, characterized in that: The upper die positioning plate rebound assembly comprises: The mounting plate is arranged in the space enclosed by the upper die support block, the upper die fixing plate and the upper die bottom plate; A plurality of connecting columns, the upper ends of which are connected to the mounting plate, and the lower ends of which pass through the upper mold bottom plate and are connected to the upper mold positioning plate; and A plurality of ejection springs have upper ends connected to the upper die fixing plate and lower ends abutting against the mounting plate.

6. The die casting trimming die according to claim 3, characterized in that: Guide columns are respectively arranged at the four corners of the bottom plate of the lower mold; and The four corners of the upper mold fixing plate are respectively provided with guide sleeves for inserting guide columns.

7. The die casting trimming die according to claim 6, characterized in that: The lower mold bottom plate is also provided with a plurality of lower mold support columns; and The upper die fixing plate is also provided with upper die support columns corresponding to the lower die support columns one by one; When the cutting is completed, the lower die support column abuts against the corresponding upper die support column.

8. The die casting trimming die according to claim 2, characterized in that: The lower mold bottom plate is also provided with a nozzle support column and a support spring sleeved on the outer periphery of the nozzle support column.

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