Trimming die capable of adjusting flatness

Abstract

The utility model discloses a trimming die capable of adjusting flatness. The trimming die is provided with an upper die assembly and a lower die assembly. The upper die assembly is provided with a top plate, a spring, a spring plate, a push plate and an upper die plate from top to bottom, and the space where the spring, the spring plate and the push plate are located is formed by supporting the top plate and the upper die plate through a first cushion block. One end of the push rod is connected with the push plate, and the other end of the push rod is connected with the upper mold core; a cutter cushion block is arranged around the upper die core, and a cutter is arranged around the upper die core below the cutter cushion block; the lower die assembly is provided with a lower die plate, a plurality of supporting blocks are arranged on the lower die plate in the longitudinal direction, a lower die core is erected on the supporting blocks, and a blanking plate is arranged around the lower die core. The flatness of a product is controlled by adjusting the thicknesses of the upper and lower die gaskets; the die-casting cutting die can solve the deformation problem of upper cover products in the die-casting cutting process, can also be used for similar products prone to deformation, and has wide popularization significance.

Description

Technical Field

[0001] This utility model belongs to the field of mold and equipment, specifically a cutting mold with adjustable flatness. Background Technology

[0002] The traditional die casting production process is as follows: spraying - mold closing - feeding - injection - part removal - manual removal of the gating system - transfer - cleaning - transfer - manual correction - transfer - surface treatment. Among these, injection, part removal, removal of the gating system, and transfer have a significant impact on the product. In particular, after long-term aging treatment, the surface hardness of the casting increases, the plasticity decreases, the correction difficulty increases, and cracks are easily induced. The production process has now been adjusted to: spraying - mold closing - feeding - injection - part removal - trimming die removal of the gating system - manual correction - transfer - cleaning - transfer - surface treatment. Manual correction mainly involves placing the casting on a flatness gauge and using a 0.5 feeler gauge for inspection. For unqualified castings, operators will use plastic or copper hammers to manually correct areas with large deformations to meet the drawing requirements. However, manual calibration is labor-intensive, has poor accuracy, affects production efficiency, and causes many complaints from operators. The production process has been further optimized to: spraying - mold closing - feeding - injection - part removal - trimming die removal and gating system + automatic calibration - transfer - cleaning - transfer - surface treatment. Therefore, the traditional trimming die structure needs to be optimized.

[0003] The top cover is a flat product, prone to deformation during production. Generally, two methods are used for shaping: manual shaping, which is labor-intensive, has poor precision, and is prone to cracking; and shaping using a trimming die, which reduces labor intensity and improves product quality. Currently, trimming dies generally have the following two design methods:

[0004] 1) The upper and lower molds are an integral structure: The structure is relatively simple and the shape correction is effective, but because the deformation of this type of product is irregular, local deformation cannot be completely solved.

[0005] 2) The lower mold is a block structure: the structure is optimized compared to the first type of cutting mold, but after the correction, the casting springs back and still deforms. Utility Model Content

[0006] This invention provides an adjustable flatness cutting die, in which both the upper and lower dies are made into inserts, and the flatness of the product is controlled by adjusting the thickness of the upper and lower die shims.

[0007] The technical solution adopted by this utility model includes:

[0008] An adjustable flatness trimming die, comprising an upper die assembly and a lower die assembly;

[0009] The upper mold assembly consists of a top plate, a spring, a spring plate, a push plate, and an upper template from top to bottom. The space where the spring, spring plate, and push plate are located is formed by the support of the top plate and the upper template by a first pad block. A push rod is installed through the upper template, with one end of the push rod connected to the push plate and the other end connected to the upper mold core.

[0010] A cutter pad is set around the upper mold core, and a cutter is set around the upper mold core below the cutter pad;

[0011] The lower mold assembly is equipped with a lower template, and multiple support blocks are set along the longitudinal direction of the lower template. The lower mold core is mounted on the support, and a blanking plate is set around the lower mold core.

[0012] Optionally, multiple clamping blocks are spaced apart below the edge of the upper mold core. The clamping blocks have irregular shapes, and the number of clamping blocks stacked is adjusted according to the deformation of the casting.

[0013] Optionally, the clamping block is a rectangular, triangular, arc-shaped, or triangular plate.

[0014] Optionally, a movable guide sleeve may be provided at the corner of the upper template;

[0015] Guide posts are provided at the corners of the lower template, and the movable guide sleeve is axially connected to the guide posts.

[0016] Optionally, an upper mold limiting post is fixed on the bottom plate of the upper mold, and a lower mold limiting post is fixed on the upper plate of the lower mold.

[0017] The upper mold limiting post and the lower mold limiting post are axially connected.

[0018] Optionally, a baffle is inserted at the outer edge of the material discharge plate.

[0019] Optionally, upper and lower mold connecting plates are inserted at the outer edges of the upper and lower molds.

[0020] Optionally, multiple correction blocks are spaced apart on the edge of the lower mold core. The correction blocks are irregular in shape, and the number of correction blocks stacked is adjusted according to the amount of casting deformation.

[0021] Optionally, the correction block is a rectangular, triangular, arc-shaped, or triangular plate.

[0022] Optionally, a movable limiting plate is provided at the tail end of the blanking plate of the lower template, and a support column is provided on the limiting plate to adjust the tilt angle of the limiting plate relative to the lower template.

[0023] The advantages of this utility model are:

[0024] The adjustable flatness cutting die of this utility model has both upper and lower dies made into inserts. The flatness of the product is controlled by adjusting the thickness of the upper and lower die shims. It can solve the deformation problem of top cover products during the die casting and cutting process, and can also be used for similar easily deformable products, which has a wide range of promotional significance. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a cross-sectional schematic diagram of the adjustable flatness trimming die device of this utility model;

[0027] Figure 2 for Figure 1 Bottom view of the upper and middle mold assembly;

[0028] Figure 3 for Figure 1 Top view of the lower and middle mold assembly.

[0029] 1-Upper mold assembly, 11-Top plate, 12-First pad block, 13-Upper template, 14-Spring, 15-Spring plate, 16-Push plate, 17-Push rod, 18-Cutter pad block, 19-Modible guide sleeve, 110-Cutter, 111-Upper mold limiting post, 112-Clamping block;

[0030] 2-Lower mold assembly, 21-Lower template, 22-Guide pillar, 23-Second pad block, 24-Blanking plate, 25-Support block, 26-Baffle, 27-Upper and lower mold connecting plate, 28-Lower mold limiting pillar, 29-Correction block, 210-Support pillar, 211-Limiting plate;

[0031] a-Upper mold core, b-Lower mold core. Detailed Implementation

[0032] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0033] The adjustable flatness trimming mold of this utility model can be applied to, but is not limited to, the die-casting production process. Here, we will only describe the process of die-casting production for cover-type products.

[0034] To improve production efficiency and reduce labor intensity, this utility model designs a trimming die that can both eliminate the gating system and correct castings, ensuring the flatness requirements of castings and improving product quality. The main optimizations are made to the upper and lower die components, with the following key innovations:

[0035] Combination Figure 1-3 The adjustable flatness trimming die of this utility model is provided with an upper die assembly 1 and a lower die assembly 2. The upper die assembly 1 is provided with a top plate 11, a spring 14, a spring plate 15, a push plate 16 and an upper template 13 from top to bottom. The space where the spring 14, spring plate 15 and push plate 16 are located is formed by the support of the top plate 11 and the upper template 13 by a first pad block 12. A push rod 17 is provided through the upper template 13. One end of the push rod 17 is connected to the push plate 16 and the other end is connected to the upper die core a. A cutter pad block 18 is provided above the upper die core a and a cutter 110 is provided below the cutter pad block 18 around the upper die core a. The top plate 11 is connected upward to the upper template of the trimming machine, which drives the upper die assembly 1 to move up and down. The top plate 11 is connected to the upper template 13 via a movable guide sleeve 19, passing through the spring plate 15 and the push plate 16. A first pad 12 is positioned between the top plate 11 and the upper template 13, forming a space for accommodating the spring plate 15 and the push plate 16. Multiple springs 14 are positioned between the spring plate 15 and the top plate 11, each spring 14 mounted on a limiting post to restrict the upward compression distance of the push plate 16 and the spring plate 15. Specifically, the top plate 11 is connected to the first pad 12 via screws. A push rod 17 is positioned through the upper template 13, moving up and down at its penetration point to transfer pressure from the upper mold core a to the push plate 16, which is then compressed by the springs 14, ensuring compression distance and rebound after compression. The lower mold assembly 2 has a lower template 21, with multiple support blocks 25 arranged longitudinally on it. A lower mold core b is mounted on the support, and a blanking plate 24 is arranged around the lower mold core b. The support block 25 is connected downward to the lower template 21 and upward to the lower mold core b, providing support for the lower mold core b. The support block 25 also supports the blanking plate, creating a certain slope to guide the slag bag system into the blanking plate 24.

[0036] Working process: When the upper mold moves downward, the movable guide sleeve cooperates with the guide post and moves along the direction of the guide post. When the push rod contacts the casting, the push rod pushes the spring plate upward, and the spring is in a compressed state. The upper mold clamping assembly contacts the stationary mold surface of the casting, and the correction assembly contacts the moving mold surface of the casting. Under the interaction of forces, the casting is in a balanced state, that is, the flatness is qualified. The cutter cuts off the overflow system such as the slag cake and slag bag. The slag cake and slag bag fall into the discharge chute through the discharge plate and baffle and are carried away by the conveyor belt. The upper mold assembly moves upward under the drive of hydraulic oil. The spring gradually relaxes, and the spring plate pushes the push rod downward. The casting falls into the lower mold, and the upper mold continues to move upward. The robot removes the casting.

[0037] In the embodiments of this disclosure, multiple clamping blocks 112 are spaced apart along the lower edge of the upper mold core a. The clamping blocks 112 have irregular shapes. The number of clamping blocks 112 stacked is adjusted according to the deformation of the casting. The clamping blocks 112 are mainly plate-like sheet structures, similar to shims, and can be flexibly set according to the deformation of the casting to be pressed. Alternatively, the clamping blocks 112 can be used to adjust the pressing direction of the upper and lower molds according to the product deformation direction and deformation amount through shims with a 0.3mm difference. The upper mold insert is designed with a conformal pressing structure.

[0038] In the embodiments of this disclosure, the clamping block 112 is a rectangular, triangular, arc-shaped or triangular plate, or it can be other shapes, as long as it can adapt to the shape and deformation of the casting.

[0039] In the embodiments of this disclosure, movable guide sleeves 19 are provided at the corners of the upper mold plate 13; guide posts 22 are provided at the corners of the lower mold plate 21, and the movable guide sleeves 19 and guide posts 22 are axially connected. The movable guide sleeves 19 and guide posts 22 cooperate to provide guidance and positioning for the downward movement of the upper mold assembly 1.

[0040] In the embodiments of this disclosure, an upper mold limiting post 111 is fixed on the bottom plate surface of the upper mold template 13, and a lower mold limiting post 28 is fixed on the upper plate surface of the lower mold template 21; the upper mold limiting post 111 and the lower mold limiting post 28 are axially connected. The limiting post is a solid column structure, and by setting the height of the column structure, the maximum distance of the upper mold moving downward can be limited.

[0041] In embodiments of this disclosure, a baffle 26 is inserted at the outer edge of the blanking plate 24 to ensure that the gating system falls into the hopper and prevents it from staying on the trimming die or trimming machine and damaging the casting.

[0042] In the embodiments of this disclosure, upper and lower mold connecting plates 27 are inserted at the outer edges of the upper mold plate 13 and the lower mold plate 21. This is mainly to facilitate the transportation of the entire set of trimming molds. One method is to transport them by overhead crane, with lifting rings installed on the top plate. The overhead crane can safely and stably lift the entire set of trimming molds away through the lifting rings. The other method is to transport them by forklift, which can stably fork away the entire set of trimming molds from the bottom.

[0043] In the embodiments of this disclosure, multiple correction blocks 29 are spaced apart along the edge of the lower mold core b. The correction blocks 29 have irregular shapes. The number of correction blocks 29 stacked is adjusted according to the amount of casting deformation. For example, 10 correction blocks 29 can be set according to the product structure. The main function of the correction blocks 29 is to provide support, which works in conjunction with the clamping block 112 on the upper mold assembly 1.

[0044] In embodiments of this disclosure, the correction block 29 is a rectangular, triangular, arc-shaped, or triangular plate, or other shapes that may be used.

[0045] In the embodiments of this disclosure, a movable limiting plate 211 is provided at the tail end of the dropping plate 24 of the lower template 21, and a support column 210 is provided on the limiting plate 211. The tilt angle of the limiting plate 211 relative to the lower template 21 is adjusted by the support column 210. The adjustment is made according to the length of the material cake to ensure that the material cake falls into the material box.

[0046] In actual operation, the entire trimming mold set is installed into the trimming machine. The upper mold assembly 1 is raised. After die casting, the robot removes the casting from the die casting cavity and places it on the lower mold core b of the lower mold assembly 2. The top plate 11 drives the upper template 13, which in turn drives the entire upper mold assembly to move downward through the movable guide sleeve 19 and guide post 22. After the upper mold core a contacts the casting, it drives the push plate 16 to move upward, squeezing the spring plate 15 and spring 14. Under the force of spring 14, spring 14 moves downward and presses the casting through the clamping block 112. The anti-deformation amount of the adjustment correction block 29 is adjusted to achieve the purpose of deformation correction. During the downward movement of the upper mold assembly 1, the cutter 110 removes the material cake and slag bag. The operation is simple, the consistency of trimming correction is good, and it can improve production efficiency and product quality, reduce labor intensity, and reduce labor costs.

[0047] The previous two-person-one-machine setup has been optimized to one-person-one-machine, resulting in a significant reduction in scrap rate. Practice has proven that the new equipment effectively reduces labor intensity, decreases the number of operators, simplifies the process, lowers production costs, improves production efficiency, ensures product quality, and generates significant economic benefits.

[0048] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An adjustable flatness trimming die characterized by, The upper die assembly (1) and the lower die assembly (2) are arranged; The upper die assembly (1) is arranged from top to bottom with a top plate (11), a spring (14), a spring plate (15), a push plate (16) and an upper die plate (13), and the space where the spring (14), the spring plate (15) and the push plate (16) are located is formed by supporting the top plate (11) and the upper die plate (13) with the first cushion block (12); a push rod (17) is arranged through the upper die plate (13), one end of the push rod (17) is connected with the push plate (16), and the other end is connected with the upper die core (a); A cutter cushion block (18) is arranged around the upper die core (a); The lower die assembly (2) is provided with a lower die plate (21), a plurality of support blocks (25) are arranged on the lower die plate (21) in the longitudinal direction, a lower die core (b) is arranged on the support blocks (25), and a blanking plate (24) is arranged around the lower die core (b).

2. The adjustable flatness trim die of claim 1, wherein, A plurality of pressing blocks (112) are arranged at intervals along the edge of the upper die core (a), and the pressing blocks (112) are irregular in shape. The number of layers of the pressing blocks (112) is adjusted according to the deformation of the casting.

3. The adjustable flatness trim die of claim 2, wherein, The pressing blocks (112) are rectangular, triangular, arc-shaped or triangular plates.

4. An adjustable flatness trimming die according to claim 1, 2 or 3, wherein A movable guide sleeve (19) is arranged at the corner of the upper die plate (13); A guide column (22) is arranged at the corner of the lower die plate (21), and the movable guide sleeve (19) and the guide column (22) are axially connected.

5. An adjustable flatness trimming die according to claim 1, 2 or 3, wherein An upper die limiting column (111) is fixedly arranged on the bottom surface of the upper die plate (13), and a lower die limiting column (28) is fixedly arranged on the upper surface of the lower die plate (21). The upper die limiting column (111) and the lower die limiting column (28) are axially connected.

6. The adjustable flatness trim die of claim 1, 2, or 3, wherein, A baffle (26) is inserted at the outer edge of the blanking plate (24).

7. An adjustable flatness trim die according to claims 1, 2 or 3 wherein, An upper and lower die connecting plate (27) is inserted at the outer edge of the upper die plate (13) and the lower die plate (21).

8. The adjustable flatness trim die of claim 1, 2, or 3, wherein, A plurality of correction blocks (29) are arranged at intervals along the edge of the lower die core (b), and the correction blocks (29) are irregular in shape. The number of layers of the correction blocks (29) is adjusted according to the deformation of the casting.

9. The adjustable flatness trim die of claim 8, wherein, The correction blocks (29) are rectangular, triangular, arc-shaped or triangular plates.

10. The adjustable flatness slitting die of claims 1, 2, or 3, wherein, A movable limiting plate (211) is arranged at the tail end of the blanking plate (24) of the lower die plate (21), a support column (210) is arranged on the limiting plate (211), and the inclination angle of the limiting plate (211) relative to the lower die plate (21) is adjusted by the support column (210).

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