Modularized stamping die

Abstract

The invention discloses a modular stamping die, and relates to the technical field of stamping dies. Comprising an upper die base, an upper padding plate, an upper clamping plate and a stripper plate which are sequentially arranged from top to bottom and connected, the stripper plate is provided with a first cavity penetrating through the upper portion and the lower portion of the stripper plate, a punch insert is arranged in the first cavity and penetrates through the first cavity, and the punch insert penetrates through the lower portion of the upper die base, the upper padding plate, the upper clamping plate and the stripper plate. The top of the punch insert is attached to the upper clamping plate, and the punch insert is detachably connected into the first cavity. The lower die base comprises a lower clamping plate, a lower base plate and a lower die plate which are sequentially arranged from top to bottom and connected, a second cavity is formed in the lower clamping plate, a female die insert is arranged in the second cavity, the female die insert is matched with the punch insert, and the female die insert is detachably and fixedly connected into the second cavity.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, and in particular to a modular stamping die. Background Art

[0002] A stamping die is a special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) in cold stamping, also known as a cold stamping die. Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform the material, thereby obtaining the desired parts. Stamping dies can be divided into five categories according to different processing methods: punching and shearing dies, bending dies, drawing dies, forming dies, and compression dies.

[0003] In order to cope with the changing needs of the market, existing stamping dies need to constantly adjust product materials, material thickness or fine-tune positioning size tolerances for market verification, resulting in the parallel production of many similar parts and components for the same model. Similar dies need to be continuously produced or the dies sizes need to be constantly changed, which has a great impact on costs and cycles. Summary of the invention

[0004] To this end, an embodiment of the present invention provides a modular stamping die to solve the problems existing in the above-mentioned technology.

[0005] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A modular stamping die, characterized in that it comprises an upper die set and a lower die set:

[0007] The upper die assembly comprises an upper die seat, an upper pad, an upper clamping plate and a stripping plate which are sequentially arranged and connected from top to bottom. The stripping plate is provided with a first cavity which passes through the upper and lower parts of the stripping plate. A punch insert is arranged in the first cavity. The punch insert passes through the first cavity. The top of the punch insert is fitted with the upper clamping plate. The punch insert is detachably connected in the first cavity.

[0008] The lower die base includes a lower clamping plate, a lower pad and a lower mold plate which are arranged and connected in sequence from top to bottom. A second cavity is opened on the lower clamping plate. A die insert is arranged in the second cavity. The die insert is adapted to the punch insert and is detachably fixedly connected in the second cavity.

[0009] Optionally, the bottom of the stripper plate is provided with a plurality of first fixing holes on the circumference of the first cavity, and the circumference of the punch insert is provided with a plurality of second fixing holes at corresponding positions, and the first fixing holes and the second fixing holes at corresponding positions form a circular first bolt hole, and bolts are installed in the first bolt holes;

[0010] The top of the punch insert is attached to and fixed to the bottom of the upper clamping plate.

[0011] Optionally, a positioning pin and a fixing bolt are provided in the upper splint, and the positioning pin and the fixing bolt are fixed to the upper splint. A punch sleeve is provided between the punch insert and the upper splint, and the two ends of the punch sleeve are respectively connected to the upper splint and the punch insert. The punch sleeve is provided with a positioning hole corresponding to the positioning pin and a bolt hole corresponding to the fixing bolt.

[0012] Optionally, a plurality of third fixing holes are provided at the top of the lower clamping plate on the peripheral side of the second cavity, and a plurality of fourth fixing holes are opened at corresponding positions on the peripheral side of the die insert. The third fixing holes and the fourth fixing holes at corresponding positions form a circular second bolt hole, and bolts are installed in the second bolt hole.

[0013] Optionally, an outer guide column is provided between the upper die base and the lower die base, the bottom of the outer guide column is fixedly connected to the lower die base, the top of the outer guide column is slidably connected to the upper die base, and a first spring is sleeved on the outer guide column.

[0014] Optionally, a limiting hole is provided in the upper pad, a limiting rod is provided in the limiting hole, the limiting rod passes through the upper clamping plate and is fixedly connected to the stripping plate, a second spring is provided in the limiting hole, one end of the second spring is fixed on the limiting rod, and the other end of the second spring is fixed in the limiting hole;

[0015] When the second spring is in an initial state, a gap is provided between the stripping plate and the upper clamping plate.

[0016] Optionally, the positioning pin adopts a universal positioning pin for the sheath to position different punch sheaths.

[0017] The present invention has at least the following beneficial effects:

[0018] The present invention fixes the punch of corresponding model by setting a punch insert in the first cavity on the stripper plate. The punch insert and the stripper plate are fixed in a detachable manner, and different punch inserts can be replaced to replace the punch. At the same time, the die insert in the second cavity of the lower clamping plate is also fixed in a detachable manner. The corresponding die insert can be replaced along with the punch insert, and then the corresponding die can be replaced. Therefore, when the product size changes, the punch insert and the die insert can be replaced to complete the stamping of the product, thereby saving cost and production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly explain the prior art and the present invention, the following briefly introduces the drawings required for describing the prior art and the embodiments of the present invention. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, other drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 It is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the assembled top view (perspective) structure of one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the upper clamping plate structure according to an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the stripping plate structure according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the lower clamping plate structure according to an embodiment of the present invention;

[0026] Figure 6 The figure is a schematic diagram of the structure of a bottom pad according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Upper die assembly; 101. Upper die base; 102. Upper pad; 103. Upper clamp; 104. Stripper plate; 2. Lower die assembly; 201. Lower clamp; 202. Lower pad; 203. Lower die base; 3. First cavity; 4. Punch insert; 5. Second cavity; 6. Die insert; 7. First bolt hole; 8. Second bolt hole; 9. Outer guide column; 10. First spring; 11. Limit rod; 12. Second spring; 13. Positioning pin; 14. Fixing bolt; 15. Punch sleeve. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] In the description of the present invention, unless otherwise specified, "plurality" means two or more. The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are intended to distinguish the objects referred to. For schemes with a sequential flow, this terminology does not have to be understood as describing a specific order or sequence. For schemes with device structures, this terminology does not distinguish between importance, positional relationships, etc.

[0031] In addition, the terms "comprises", "has" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that have been explicitly listed, but may also include other steps or units that are not explicitly listed but are inherent to these processes, methods, products or apparatuses, or steps or units that are added based on further optimization schemes conceived by the present invention.

[0032] like Figure 1-Figure 6 As shown, a modular stamping die disclosed in the present invention comprises an upper die set 1 and a lower die set 2;

[0033] The upper die assembly 1 includes an upper die base 101, an upper pad 102, an upper clamping plate 103 and a stripping plate 104 which are sequentially arranged and connected from top to bottom. The stripping plate 104 is provided with a first die cavity 3 which passes through the stripping plate 104 from top to bottom. A punch insert 4 is arranged in the first die cavity 3. The punch insert 4 passes through the first die cavity 3. The top of the punch insert 4 is fitted with the upper clamping plate 103. The punch insert 4 is detachably connected to the first die cavity 3.

[0034] The lower die base 203 includes a lower clamping plate 201, a lower pad 202 and a lower mold plate which are arranged and connected in sequence from top to bottom. A second cavity 5 is opened on the lower clamping plate 201. A die insert 6 is arranged in the second cavity 5. The die insert 6 is adapted to the punch insert 4, and the die insert 6 is detachably fixedly connected in the second cavity 5.

[0035] On the above-mentioned stripper plate 104, a first cavity 3 is opened which is adapted to the punch insert 4. The first cavity 3 can just accommodate the punch insert 4, and there is no gap on the surrounding side. The punch insert 4 is placed in the first cavity 3, and its top surface is in contact with the bottom surface of the upper clamping plate 103. Then, the punch insert 4 and the stripper plate 104 are fixed at the bottom of the punch insert 4 to complete the installation of the punch insert 4.

[0036] More specifically, a cavity adapted to the punch insert 4 can be opened on the bottom surface of the upper clamping plate 103, and after the punch is inserted into the first cavity 3, the top surface of the punch insert 4 is just placed in the cavity of the upper clamping plate 103, and then the punch insert 4 is fixed on the bottom surface of the punch insert 4;

[0037] Alternatively, a punch sheath 15 is provided between the punch insert 4 and the upper clamping plate 103 to fix the punch, and at the same time, the top surface of the punch sheath 15 contacts the bottom surface of the upper clamping plate 103, and the bottom surface of the punch sheath 15 is fixed to the top surface of the punch insert 4. A fixing bolt 14 and a positioning pin 13 are preset in the upper clamping plate 103, and the positioning pin 13 can be positioned with the punch sheath 15. The fixing bolt 14 fixes the punch sheath 15, and fixes the punch sheath 15 and the upper clamping plate 103 together;

[0038] The lower clamping plate 201 is provided with a second cavity 5 adapted to the die insert 6. The die insert 6 is just placed in the second cavity 5 without any gap on the surrounding side. The bottom surface of the die insert 6 fits the lower clamping plate 201, and the top of the die insert 6 fixes the die insert 6 to the lower clamping plate 201.

[0039] The fixing between the above-mentioned die insert 6 and the lower clamping plate 201, and the punch insert 4 and the stripper plate 104 are all detachable fixing methods.

[0040] In a further embodiment, the bottom of the stripper plate 104 is provided with a plurality of first fixing holes on the peripheral side of the first cavity 3, and the corresponding positions on the peripheral side of the punch insert 4 are provided with a plurality of second fixing holes, and the first fixing holes and the second fixing holes at the corresponding positions form a circular first bolt hole 7, and bolts are installed in the first bolt hole 7;

[0041] The top of the punch insert 4 is attached to and fixed to the bottom of the upper clamping plate 103 .

[0042] The top of the lower clamping plate 201 is located on the peripheral side of the second cavity 5 and is provided with a plurality of third fixing holes, and the corresponding positions on the peripheral side of the die insert 6 are provided with a plurality of fourth fixing holes, and the third fixing holes and the fourth fixing holes at corresponding positions form a circular second bolt hole 8, and bolts are installed in the second bolt hole 8.

[0043] The punch insert 4 / die insert 6 are fixed by pressing the stripper plate 104 / lower clamping plate 201 with bolts;

[0044] Specifically, after the punch insert 4 is placed in the first cavity 3, four first bolt holes 7 are opened at the four corners of the punch insert 4, the first bolt part is opened on the punch insert 4, and the rest is opened on the stripper plate 104, forming a circular first bolt hole 7, so that the punch insert 4 and the stripper plate 104 can be fixed by installing bolts in the first bolt hole 7;

[0045] Similarly, after the die insert 6 is placed in the second cavity 5, a second bolt hole 8 is opened on the surface of the die insert 6. At least one set of diagonal second bolt holes 8 is required, or second bolt holes 8 are opened in all four corners. Part of the second bolt hole 8 is opened on the lower clamping plate 201, and the rest is opened on the die insert 6 to form a circular second bolt hole 8. Bolts are installed in the second bolt hole 8 to fix the die insert 6 to the lower clamping plate 201.

[0046] An outer guide column 9 is provided between the upper die base 101 and the lower die base 203 , the bottom of the outer guide column 9 is fixedly connected to the lower die base 203 , the top of the outer guide column 9 is slidably connected to the upper die base 101 , and a first spring 10 is sleeved on the outer guide column 9 .

[0047] A limiting hole is provided in the upper pad 102, a limiting rod 11 is provided in the limiting hole, the limiting rod 11 passes through the upper clamping plate 103 and is fixedly connected to the stripping plate 104, a second spring 12 is provided in the limiting hole, one end of the second spring 12 is fixed on the limiting rod 11, and the other end of the second spring 12 is fixed in the limiting hole;

[0048] When the second spring 12 is in an initial state, a gap is provided between the stripping plate 104 and the upper clamping plate 103 .

[0049] The positioning pin 13 is a universal positioning pin 13 for sheaths, and is used to position different punch sheaths 15 .

[0050] The mold of the present invention is used as a shared mold, sharing the upper mold base 101, the lower mold base 203, the upper pad 102, the lower pad 202, the stripper plate 104 and the lower clamping plate 201. Different products need to replace the punch insert 4 in the stripper plate 104 and the die insert 6 in the lower clamping plate 201. Only by replacing two inserts, the stamping processing of different products can be achieved. At the same time, special attention should be paid to the insert cavity of the stripper plate and the lower clamping plate 201, as well as the shape precision processing of the insert. The matching tolerance should be within 0.005 to ensure the matching precision requirement.

[0051] The structure of the common mold frame, template and replacement insert in the mold is selected according to the product's appearance and size characteristics, and the tail width, center distance and head size are selected. The series of products with tail size 8.3-8.4mm, head size 8.2-8.5, and center distance 13.5 can use this mold. By analogy, this structure can be applied to other product series.

[0052] Ensure the processing accuracy of the stripping cavity, recessed cavity and matching parts.

[0053] The processing technology of the cavity is: wire cutting is performed using a slow wire machine, which is divided into 3 cutting passes: the first pass is rough cutting, with the copper wire tilted at an angle of 1.0 degrees, and then the core is removed; the copper wire is adjusted to a vertical state, and semi-finishing and finishing are performed in turn to ensure the geometric size accuracy and inner cavity roughness.

[0054] Processing technology of recessed parts: Use slow wire machine tool wire cutting, which is divided into 3 cuttings: Special attention should be paid here. When clamping, support points should be set at both ends of the recessed parts, and then the table should be pulled for alignment, and 3 cutting processes should be carried out; after the middle position is processed, this part should be bonded with copper foil and 502 glue, and then the support points at both ends should be refined, and finally the punch should be soaked in cleaning fluid and wiped clean.

[0055] The above specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0056] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0057] The present invention is described in more detail through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, it is obvious that several variations and improvements can be made to these specific embodiments, which all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application shall be subject to the attached claims.

Claims

1. A modular stamping die, characterized in that: Including upper die set and lower die set: The upper die assembly comprises an upper die seat, an upper pad, an upper clamping plate and a stripping plate which are sequentially arranged and connected from top to bottom. The stripping plate is provided with a first cavity which passes through the upper and lower parts of the stripping plate. A punch insert is arranged in the first cavity. The punch insert passes through the first cavity. The top of the punch insert is fitted with the upper clamping plate. The punch insert is detachably connected in the first cavity. The lower die base includes a lower clamping plate, a lower pad and a lower mold plate which are arranged and connected in sequence from top to bottom. A second cavity is opened on the lower clamping plate. A die insert is arranged in the second cavity. The die insert is adapted to the punch insert and is detachably fixedly connected in the second cavity.

2. A modular stamping die according to claim 1, characterized in that: The bottom of the stripper plate is located on the periphery of the first cavity and is provided with a plurality of first fixing holes, and the periphery of the punch insert is provided with a plurality of second fixing holes at corresponding positions, and the first fixing holes and the second fixing holes at corresponding positions form a circular first bolt hole, and bolts are installed in the first bolt holes; The top of the punch insert is attached to and fixed to the bottom of the upper clamping plate.

3. A modular stamping die according to claim 2, characterized in that: A locating pin and a fixing bolt are arranged in the upper clamping plate, and the locating pin and the fixing bolt are fixed on the upper clamping plate. A punch sleeve is arranged between the punch insert and the upper clamping plate, and the two ends of the punch sleeve are respectively connected to the upper clamping plate and the punch insert. A locating hole corresponding to the locating pin and a bolt hole corresponding to the fixing bolt are arranged on the punch sleeve.

4. A modular stamping die according to claim 1, characterized in that: The top of the lower clamping plate is located on the peripheral side of the second cavity and is provided with a plurality of third fixing holes, and the peripheral side of the die insert is provided with a plurality of fourth fixing holes at corresponding positions, and the third fixing holes and the fourth fixing holes at corresponding positions form a circular second bolt hole, and bolts are installed in the second bolt hole.

5. A modular stamping die according to claim 1, characterized in that: An outer guide column is arranged between the upper die seat and the lower die seat, the bottom of the outer guide column is fixedly connected to the lower die seat, the top of the outer guide column is slidably connected to the upper die seat, and a first spring is sleeved on the outer guide column.

6. A modular stamping die according to claim 1, characterized in that: A limiting hole is provided in the upper pad, a limiting rod is provided in the limiting hole, the limiting rod passes through the upper clamping plate and is fixedly connected to the stripping plate, a second spring is provided in the limiting hole, one end of the second spring is fixed on the limiting rod, and the other end of the second spring is fixed in the limiting hole; When the second spring is in an initial state, a gap is provided between the stripping plate and the upper clamping plate.

7. A modular stamping die according to claim 3, characterized in that: The positioning pin adopts a universal positioning pin for sheaths to position different punch sheaths.

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