Punching and trimming die

Abstract

The utility model discloses a punching and trimming die which comprises an upper die base, a plurality of sets of elastic pressing assemblies installed on the bottom face of the upper die base, a punch assembly installed on the upper bottom face of the upper die base, a lower die base opposite to the upper die base, and a lower die plate installed on the upper surface of the lower die base. Wherein the punch assembly comprises a punch body, an inclined plane part and a material pressing elastic sheet, the punch body is provided with a punching surface, and the punching surface is composed of a first plane located on the bottom surface of the punch body, a second plane higher than the first plane and a connecting inclined plane connecting the first plane and the second plane; the connecting inclined surface is concave inwards to form a mounting groove, and the inclined surface part is detachably mounted in the mounting groove through a bolt. According to the die, the replaceable split type structural design is carried out on the punch part area, so that the punch part area can be replaced after being abraded, and the problems that the punch and a knife edge are low in strength, the knife edge is prone to being broken, and punching burrs are large can be solved to a certain degree.

Description

Technical Field

[0001] The present application relates to the field of dies, and in particular to a punching and trimming die. Background Art

[0002] Metal stamping die technology is one of the key technologies in modern manufacturing and is widely used in the fields of automobiles, electronics, home appliances, aerospace, etc. As an important part of metal stamping die technology, trimming die is mainly used to remove burrs or excess materials from workpieces to ensure the dimensional accuracy and surface finish of products.

[0003] The existing trimming die generally consists of two parts: the upper die and the lower die. The upper die is mainly composed of the upper die seat, spring, punch and pressure plate; the upper die seat fixes the punch and spring, and the pressure plate is fixed on the spring, which plays a role of movement and pressing. The lower die is composed of the lower mold plate, the lower mold seat and the product; the lower mold plate is fixed on the lower mold seat, and the product is installed on the lower mold plate with the lower mold plate. This design allows the punch and the blade of the lower mold plate to work at the same time during the mold closing process, thereby realizing the trimming of the workpiece.

[0004] However, the prior art has several significant deficiencies. Figure 1 As shown, in the existing punching and trimming dies, since the punch blade and the lower template blade have exactly the same shape, when the mold is closed for trimming processing, especially when processing workpieces with large bevel angles, multiple problems will be encountered. First, due to the concentrated force on the punch and the blade, their strength is relatively weak, and the blade is prone to chipping. Secondly, since the punch and the blade of the lower template act on the workpiece at the same time, large punching burrs are likely to be generated, affecting the surface quality of the product, and the punch is an integrated structure, so as long as part of it is worn, it needs to be replaced as a whole. These problems lead to low mass production and high defective rate of the product, which seriously affects production efficiency and product quality.

[0005] Therefore, in view of the problems existing in the existing trimming die technology, it is particularly important and necessary to develop a new trimming die technology. Utility Model Content

[0006] The purpose of the present application is to overcome at least one of the shortcomings of the prior art and to provide a punching and trimming die. The die has a replaceable split structure design in the punch area so that the part can be replaced after wear. This can, to a certain extent, solve the problems of weak punch and blade strength, easy blade collapse, large punching burrs, etc., improve the mass productivity of the product and reduce the defective rate. It can also significantly improve production efficiency and product quality, and meet the urgent needs of modern manufacturing industry for high-precision and high-quality products.

[0007] To achieve the above purpose, the present application discloses a punching and trimming die, comprising

[0008] Upper die seat,

[0009] Multiple sets of elastic pressing components installed on the bottom surface of the upper die seat,

[0010] The punch assembly is installed on the bottom surface of the upper die seat.

[0011] The lower die seat facing the upper die seat,

[0012] A lower mold plate mounted on the upper surface of a lower mold base;

[0013] The punch assembly includes a punch body, a bevel portion, and a material pressing spring. The punch body has a punching surface, which is composed of a first plane located on the bottom surface of the punch body, a second plane higher than the first plane, and a connecting bevel connecting the first plane and the second plane.

[0014] The connecting inclined surface is concave to form a mounting groove, and the inclined portion is detachably mounted in the mounting groove by bolts;

[0015] The connecting inclined surface is also provided with at least one inner mounting groove, in which at least one material pressing spring piece is installed, and an opening for avoiding the material pressing spring piece is provided on the inclined surface to match the inner mounting groove;

[0016] The lower template is provided with a placement surface opposite to the punch assembly, and the placement surface has an upper working surface, a lower working surface, and a working inclined surface connecting the upper working surface and the lower working surface; the placement surface is provided with a punching space for accommodating the downward movement of the punch assembly;

[0017] The upper working surface is opposite to the second plane; the lower working surface is opposite to the first working surface; the working inclined surface is opposite to the connecting inclined surface, and the inclined surface angle of the working inclined surface based on the horizontal is greater than that of the connecting inclined surface. When the punch assembly moves downward, the first plane and the second plane contact the processed plate before the surface of the inclined surface.

[0018] Furthermore, the elastic pressing assembly includes a guide rod, a spring, and a pressing block. The pressing block is connected to the guide rod and cooperates with the spring at the same time, so that the pressing block has elastic restoring force in the vertical direction; the guide rod and the upper mold base are provided with a guide groove to ensure that the pressing block moves in the vertical direction.

[0019] Furthermore, the front end of the pressing spring piece is higher than the inclined surface, and a scratch-resistant plastic block is installed on the front end of the pressing spring piece, and the scratch-resistant plastic block is used to contact the processed plate.

[0020] Furthermore, an upper mold plate for fixing the elastic pressing assembly and the punch assembly is installed on the bottom surface of the upper mold base.

[0021] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0022] 1. Through the replaceable split structure design, the bevel part in the punch assembly can be removed and replaced separately, avoiding the high cost and time consumption of overall replacement. This design prolongs the service life of the punch and the blade and improves the durability of the mold.

[0023] 2. The multi-plane and bevel design of the punch body ensures more uniform force during the punching process and reduces the risk of blade cracking. Especially when processing workpieces with large bevel angles, this design significantly improves the strength and stability of the punch and blade.

[0024] 3. The new design allows each part of the punch assembly to contact the workpiece in sequence, thereby reducing the burrs generated during the punching process and improving the surface quality of the product. This improvement effectively reduces the surface defects of the product and improves the aesthetics and quality of the product.

[0025] The above-listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementations will be further disclosed in the examples or other description parts of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand the various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the accompanying drawings sometimes do not represent the actual positions, sizes, and ranges. In the accompanying drawings:

[0027] Figure 1 It is a structural schematic diagram of the prior art.

[0028] Figure 2 A schematic diagram of the structure of an embodiment disclosed in the present application.

[0029] Figure 3 It is a schematic diagram of the exploded structure of a punch assembly in an embodiment disclosed in the present application. DETAILED DESCRIPTION

[0030] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0031] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0032] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification.

[0033] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. Example

[0034] like Figure 2 , 3 As shown, this embodiment discloses an exemplary structure of an improved punching and trimming die, which solves the problems of weak punch and blade strength, easy blade breakage, and large punching burrs in the prior art by adopting a replaceable split structure design and a combination of multiple planes and bevels.

[0035] Specifically, the punching and trimming die includes an upper die base 1, multiple groups of elastic pressing components 2 installed on the bottom surface of the upper die base 1, a punch component 3 installed on the upper bottom surface of the upper die base 1, a lower die base 4 corresponding to the lower part of the upper die base 1, and a lower mold plate 5 installed on the upper surface of the lower die base 4.

[0036] In this embodiment, the punch assembly 3 includes a punch body 301, a bevel portion 302 and a material pressing spring piece 303. The punch body 301 has a punching surface, which is composed of a first plane 304 located at the bottom of the punch body 301, a second plane 305 higher than the first plane 304, and a connecting bevel 306 connecting the first plane 304 and the second plane 305. The connecting bevel 306 is concave to form a mounting groove 307, and the bevel portion 302 is detachably mounted in the mounting groove 307 by bolts; at least one inner mounting groove 308 is also provided on the connecting bevel 306, and at least one material pressing spring piece is installed in the inner mounting groove 308, and correspondingly, an opening 309 for avoiding the material pressing spring piece 303 is opened on the bevel portion 302.

[0037] The purpose of designing the inclined surface portion 302 is to enable the punch portion to be replaced separately after being worn, thereby reducing the cost and time of overall replacement and extending the service life of the mold.

[0038] In this embodiment, a lower mold plate 5 is provided on the lower mold plate 4, and a placement surface opposite to the punch assembly 3 is provided on the lower mold plate 5, and the placement surface has an upper working surface 501, a lower working surface 502, and a working inclined surface 503 connecting the upper working surface 501 and the lower working surface 502. A punching space 504 for accommodating the downward movement of the punch assembly 2 is opened on the placement surface.

[0039] In the above structure, the upper working surface 501 is opposite to the second plane 305 , the lower working surface 502 is opposite to the first working surface 304 , the working inclined surface 503 is opposite to the connecting inclined surface 306 , and the inclined surface angle of the working inclined surface 503 based on the horizontal is greater than that of the connecting inclined surface 306 .

[0040] In this embodiment, when the punch assembly 3 moves downward, the first plane 304 and the second plane 305 contact the processed plate 6 before the surface of the inclined portion 302. This design ensures that during the punching process, each part of the punch blade can contact the workpiece in sequence, disperse the force, reduce punching burrs, and improve the surface quality of the product.

[0041] In the above structure, it should be understood that the split structural design of the punch assembly 3 allows the inclined portion 302 to be replaced separately. When the inclined portion 302 is worn, only this portion needs to be replaced without replacing the entire punch assembly 3, thereby reducing maintenance costs and time.

[0042] During operation, the punch assembly 3 moves downward when the mold is closed, and the first plane 304 and the second plane 305 contact the processed plate 6 at the same time.

[0043] When the first plane 304 and the second plane 305 contact the plate 6 to be processed, preliminary pressure is applied to fix it on the lower template 4 to prevent the plate 6 to be processed from moving during the subsequent trimming process.

[0044] As the punch assembly 3 continues to move downward, the connecting bevel surface 306 and the bevel surface portion 302 begin to contact the workpiece and perform a trimming operation.

[0045] This combination of multi-plane and bevel design can disperse the force applied to the blade during punching and reduce the phenomenon of force concentration, thereby increasing the strength of the punch and blade and reducing the risk of blade cracking. This design significantly reduces punching burrs and improves the surface quality of the product.

[0046] In this embodiment, as a part of the punch assembly 3, the front end of the pressing spring piece 303 is higher than the inclined portion 302, and a scratch-resistant plastic block is installed on the front end. The scratch-resistant plastic block is used to contact the processed plate 6 to prevent the workpiece from being scratched during the punching process, thereby further improving the surface quality and integrity of the product. This design detail further ensures the quality and aesthetics of the finished product. Specifically, the pressing spring piece 303 provides a pre-pressure on the inclined portion of the processed plate 6 during the stamping process. This pre-pressure ensures that the inclined surface is in a controlled state before contacting the workpiece, making the stamping process smoother and reducing the impact of instantaneous impact force on the plate and the mold, thereby ensuring the accuracy and consistency of the trimming. This is particularly important for processing high-precision workpieces and helps to improve the overall quality of the product.

[0047] In this embodiment, the elastic pressing assembly 2 includes a guide rod, a spring and a pressing block 201. The pressing block 201 is connected to the guide rod and cooperates with the spring at the same time, so that the pressing block 201 has elastic restoring force in the vertical direction. The guide rod cooperates with the guide groove opened on the upper die seat to ensure that the pressing block 201 moves in the vertical direction. This design ensures the stability and accuracy of the workpiece during the processing, reduces the deformation and movement of the workpiece, and improves the processing accuracy.

[0048] Although the exemplary embodiments of the present disclosure have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. Punching and trimming die, characterized in that: include: An upper die base, multiple groups of elastic pressing components installed on the bottom surface of the upper die base, a punch component installed on the upper bottom surface of the upper die base, a lower die base opposite to the lower part of the upper die base, and a lower template installed on the upper surface of the lower die base, wherein the punch component includes a punch body, an inclined portion, and a pressing spring sheet, the punch body has a punching surface, which is composed of a first plane located on the bottom surface of the punch body, a second plane higher than the first plane, and a connecting inclined surface connecting the first plane and the second plane; the connecting inclined surface is concave to form a mounting groove, and the inclined portion is detachably mounted in the mounting groove by bolts; the connecting inclined surface is also provided with at least one inner mounting groove and at least one pressing spring sheet It is installed in the inner installation groove, and is adapted thereto, and an opening for avoiding the pressing spring is opened on the inclined portion; the lower template is provided with a placement surface opposite to the punch assembly, and the placement surface has an upper working surface, a lower working surface, and a working inclined surface connecting the upper working surface and the lower working surface; the placement surface is provided with a punching space for accommodating the downward movement of the punch assembly; the upper working surface is opposite to the second plane; the lower working surface is opposite to the first working surface; the working inclined surface is opposite to the connecting inclined surface, and the inclined surface angle of the working inclined surface based on the horizontal is greater than that of the connecting inclined surface. When the punch assembly moves downward, the first plane and the second plane contact the processed plate before the surface of the inclined portion.

2. The punching and trimming die as claimed in claim 1, characterized in that: The elastic pressing assembly includes a guide rod, a spring, and a pressing block. The pressing block is connected to the guide rod and cooperates with the spring at the same time, so that the pressing block has elastic restoring force in the vertical direction; the guide rod and the upper mold base are provided with a guide groove to ensure that the pressing block moves in the vertical direction.

3. The punching and trimming die as claimed in claim 1, characterized in that: The front end of the pressing spring piece is higher than the inclined surface, and a scratch-resistant plastic block is installed on the front end of the pressing spring piece, and the scratch-resistant plastic block is used to contact the processed plate.

4. The punching and trimming die as claimed in claim 1, characterized in that: An upper die plate for fixing an elastic pressing component and a punch component is installed on the bottom surface of the upper die seat.

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