Trimming lower die of split structure

Abstract

The utility model discloses a split structure trimming lower die which comprises a lower die base and further comprises a trimming lower die block, the trimming lower die block is detachably connected with the lower die base, the top of the trimming lower die block is provided with a knife edge protrusion used for trimming a workpiece, the lower die base is provided with a cavity coinciding with the edge of the knife edge protrusion, and the edge of the cavity is provided with a cutting edge. The cavity is used for supporting the knife edge and improving the protruding strength of the knife edge, the lower die base is detachably connected with the edge cutting lower die block, so that when the edge cutting lower die block is abraded or scrapped after being used for a long time, the edge cutting lower die block can be detached from the lower die base, and maintenance or replacement use can be conveniently conducted; the problems that once the lower die base is scrapped, the whole lower die base needs to be replaced, the service life of the lower die base is affected, and cost loss is caused are effectively solved, the lower trimming die block can be detached and replaced, cost loss is reduced, and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of trimming lower dies ， In particular, the application relates to a split-structure trimming lower die. BACKGROUND

[0002] ‌The trimming lower die is a kind of stamping die, which is mainly used for trimming the edges of drawn parts to have specific height, diameter and shape. Its working principle is to remove the flash of the forged part by the clamping operation of the upper die and the lower die, thereby improving the production efficiency.

[0003] However, in the process of implementing the related technical solutions, at least the following technical problems are found: the trimming lower die has a trimming knife edge for trimming the workpiece, and the existing trimming lower die is integrally formed. However, the die needs to be in contact with the workpiece during long-term trimming, thereby causing wear of the trimming knife edge of the die, resulting in scrapping of the entire die, and the trimming lower die needs to be frequently replaced, which not only increases the manufacturing cost of the die but also affects the machining efficiency of the workpiece, causing losses to the factory. Therefore, we propose a split-structure trimming lower die. SUMMARY

[0004] The application provides a split-structure trimming lower die, which solves the problem that the lower die seat needs to be replaced as a whole once it is scrapped, thereby affecting the service life of the lower die seat and causing cost loss, and achieves the detachable replacement of the trimming lower die module, thereby reducing cost loss and facilitating maintenance.

[0005] The application provides a split-structure trimming lower die, which includes a lower die base and further includes:

[0006] A trimming lower die module is detachably connected between the lower die base, the top of the trimming lower die module is provided with a knife edge protrusion for trimming the workpiece, and the lower die base is provided with a cavity coinciding with the edge of the knife edge protrusion, the cavity is used for supporting the knife edge and increasing the strength of the knife edge protrusion;

[0007] The top of the lower die base is provided with a mounting groove, the bottom of the trimming lower die module is provided with a mounting block, the mounting block is matched with the mounting groove, a limiting piece for quickly and accurately installing the trimming lower die module on the lower die base is arranged between the lower die base and the mounting block, and a fixing piece for fastening connection is further arranged between the lower die base and the trimming lower die module.

[0008] Further, the limiting piece includes limiting surfaces arranged at opposite positions of the mounting groove, and the mounting block is provided with a guide sliding surface corresponding to the position of the limiting surface, the guide sliding surface is matched with the limiting surface and is used for accurately entering the trimming lower die module into the lower die base.

[0009] Further, the fixing member comprises a first fixing hole arranged at the top of the mounting groove, and the first fixing hole is arranged between the two sets of limiting surfaces and is arranged in two sets and oppositely.

[0010] The trimming lower mold module is provided with two sets of second fixing holes, and the positions of the second fixing holes coincide with those of the first fixing holes, and a pin shaft is arranged between the two sets of first fixing holes and the two sets of second fixing holes.

[0011] Further, the mounting block is integrally formed with the trimming lower mold module, and the trimming edge on the position of the mounting block coincides with the knife edge protrusion, so that the strength of the knife edge protrusion can be increased.

[0012] Further, the thickness of the lower mold base is greater than that of the trimming lower mold module.

[0013] The technical scheme provided by the present application has at least the following technical effects or advantages:

[0014] In the present application, the detachable connection between the lower mold base and the trimming lower mold module is adopted, so that when the trimming lower mold module is worn out or scrapped after long-term use, the trimming lower mold module can be detached from the lower mold base, and the trimming lower mold module can be conveniently repaired or replaced, so that the problem that the lower mold base needs to be replaced as a whole once it is scrapped is solved, the service life of the lower mold base is affected, and the cost loss is caused, the detachable trimming lower mold module is realized, and the cost loss is reduced and the repair is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the whole application;

[0016] Figure 2 It is a structural schematic diagram of the lower mold base of the present application;

[0017] Figure 3 It is a structural schematic diagram of the trimming lower mold module of the present application;

[0018] Figure 4 It is a sectional structural schematic diagram of the whole application.

[0019] In the figure: 10, lower mold base; 101, cavity; 102, mounting groove; 20, trimming lower mold module; 201, knife edge protrusion; 202, mounting block; 3, limiting member; 31, limiting surface; 32, guide sliding surface; 4, fixing member; 41, first fixing hole; 42, second fixing hole; 43, pin shaft. DETAILED DESCRIPTION

[0020] The embodiment of the application discloses a split structure trimming lower die, and the technical scheme in the embodiment of the application will be clearly and completely described below in combination with the drawings in the embodiment of the application. Obviously, the described embodiment is only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0021] In order to better understand the above technical scheme, the above technical scheme will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0022] With reference to Figures 1-2 The split structure trimming lower die comprises a lower die base 10, further comprises a trimming lower die module 20, the trimming lower die module 20 is detachably connected with the lower die base 10, the top of the trimming lower die module 20 is provided with a cutting edge protrusion 201 for trimming a workpiece, and the lower die base 10 is provided with a cavity 101 coinciding with the edge of the cutting edge protrusion 201, the cavity 101 is used for supporting the cutting edge and increasing the strength of the cutting edge protrusion 201, the shape of the cavity 101 coincides with the edge of the cutting edge protrusion 201, and the cutting edge protrusion 201 can have a certain supporting force, thereby increasing the strength, the cutting edge protrusion 201 is set according to the shape required by the existing workpiece processing, and the workpiece is processed by using the cutting edge protrusion 201, which belongs to the prior art and will not be described in detail here.

[0023] The top of the lower die base 10 is provided with a mounting groove 102, the bottom of the trimming lower die module 20 is provided with a mounting block 202, the mounting block 202 is matched with the mounting groove 102, and the lower die base 10 and the mounting block 202 are provided with a limiting piece 3 for quickly and accurately mounting the trimming lower die module 20 on the lower die base 10, and the lower die base 10 and the trimming lower die module 20 are further provided with a fixing piece 4 for fastening connection;

[0024] The mounting block 202 is integrally formed with the trimming lower die module 20, the cutting edge at the position of the mounting block 202 coincides with the cutting edge protrusion 201, the strength of the cutting edge protrusion 201 can be increased, and the thickness of the lower die base 10 is greater than that of the trimming lower die module 20, so that the service life of the lower die base 10 can be increased, the height of the trimming lower die module 20 is low, the material is saved, the manufacturing cost is low, the replacement is easy, the thickness of the split part at the trimming edge is 10-20 mm, preferably 15 mm, the lower die base 10 can be used repeatedly, the waste of mold material is greatly reduced, the overall service life of the trimming lower die is improved, the mold material is saved, and the repair and replacement efficiency of the trimming lower die is improved.

[0025] With reference to Figures 2-3The limiting piece 3 comprises limiting surfaces 31 arranged at opposite positions of the mounting groove 102, and the mounting block 202 is provided with guide sliding surfaces 32 corresponding to positions of the limiting surfaces 31, the guide sliding surfaces 32 are matched with the limiting surfaces 31 and used for accurately entering the trimming lower mold module 20 into the lower mold base 10, when mounting, the guide sliding surfaces 32 on the mounting block 202 are aligned with the limiting surfaces 31, at this time, the mounting positions of the lower mold base 10 and the trimming lower mold module 20 can be quickly determined, so that the fast mounting can be realized, and the guide sliding surfaces 32 and the limiting surfaces 31 pass through the outer wall of the mounting groove 102, so that the clamping effect between the guide sliding surfaces 32 and the limiting surfaces 31 is also achieved, so that the fastening effect can also be achieved.

[0026] Referring to Figures 2-4 The fixing piece 4 comprises first fixing holes 41 arranged at the top of the mounting groove 102, the first fixing holes 41 are arranged between the two groups of limiting surfaces 31, and the first fixing holes 41 are arranged in two groups and oppositely arranged.

[0027] The trimming lower mold module 20 is provided with two groups of second fixing holes 42, the second fixing holes 42 are coincided with positions of the first fixing holes 41, and the first fixing holes and the second fixing holes are provided with a pin shaft 43.

[0028] The pin shaft 43 is first inserted into the first fixing hole 41, and then the trimming lower mold module 20 is mounted after the fast positioning is realized by the limiting surfaces 31 and the guide sliding surfaces 32, so that the fixed connection of the lower mold base 10 and the trimming lower mold module 20 is realized.

[0029] The working principle of the present application is as follows:

[0030] When using, the pin shaft 43 is first installed in the first positioning hole, then the position of the guide sliding surface 32 of the mounting block 202 of the trimming lower mold module 20 is aligned with the position of the limiting surface 31 in the mounting groove 102, after the positions of the two are aligned, the second fixing hole 42 is also aligned with the pin shaft 43, and then the mounting is performed, until the positions of the mounting block 202 and the pin shaft 43 are completely entered, and then the mounting is realized.

[0031] When the trimming lower mold module 20 is damaged or worn after long-term use, the two can be disassembled through the pin shaft 43, so that the maintenance and replacement can be conveniently performed, and the cost waste can be greatly reduced and the overall service life of the lower mold can be improved.

[0032] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

[0033] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A split-structure cutting lower mold, comprising a lower mold base (10), characterized in that, Also includes: The lower trimming module (20) is detachably connected to the lower die base (10). The top of the lower trimming module (20) is provided with a cutting edge protrusion (201) for trimming the workpiece, and the lower die base (10) is provided with a cavity (101) that coincides with the edge of the cutting edge protrusion (201). The cavity (101) is used to support the cutting edge and increase the strength of the cutting edge protrusion (201). The lower mold base (10) has an installation groove (102) on its top, and the lower trimming module (20) has an installation block (202) at its bottom. The installation block (202) matches the installation groove (102), and a limiting member (3) is provided between the lower mold base (10) and the installation block (202) to enable the lower trimming module (20) to be quickly and accurately installed on the lower mold base (10). A fixing member (4) is also provided between the lower mold base (10) and the lower trimming module (20) for fastening connection.

2. The split-structure cutting edge lower mold as described in claim 1, characterized in that, The limiting component (3) includes a limiting surface (31) set at a relative position on the mounting groove (102), and a guide surface (32) is provided on the mounting block (202) at the position corresponding to the limiting surface (31). The guide surface (32) matches the limiting surface (31) and is used to make the cutting lower module (20) accurately enter the lower mold base (10).

3. The split-structure cutting edge lower mold as described in claim 2, characterized in that, The fastener (4) includes a first fixing hole (41) opened at the top of the mounting groove (102), and the first fixing hole (41) is disposed between two sets of limiting surfaces (31), and the first fixing hole (41) is provided in two sets and disposed opposite to each other; The lower trimming module (20) has two sets of second fixing holes (42), and the second fixing holes (42) coincide with the positions of the first fixing holes (41), and a pin (43) is provided between the two sets of first fixing holes (41) and the two sets of second fixing holes (42).

4. The split-structure cutting edge lower mold as described in claim 1, characterized in that, The mounting block (202) is integrally formed with the cutting edge lower module (20), and the cutting edge at the position of the mounting block (202) coincides with the blade protrusion (201), which can increase the strength of the blade protrusion (201).

5. The split-structure cutting edge lower mold as described in claim 1, characterized in that, The thickness of the lower mold base (10) is greater than the thickness of the trimmed lower module (20).

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