Stamping back-extrusion die
By designing a stamping back extrusion die, and using structures such as pressure blocks and ejection blocks to compact and eject the edges of the processed parts, the problem of the processed parts lifting up was solved, and the processed parts were successfully formed and easily removed.
Patent Information
- Application Number
- CN202423282128.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing stamping dies lack compaction measures at the edges of the part where it is punched out, causing the part to warp and deform around its perimeter, making it difficult to remove effectively.
A stamping back extrusion die is designed, comprising a lower die base, an upper die base, a stamping part, a pressure block, a first spring, a guide rod, a limit block, a material ejection block, and a back extrusion mechanism. The pressure block compacts the edge of the workpiece, and the material ejection block and the back extrusion mechanism eject the workpiece.
This effectively prevents the workpiece from warping during the stamping process, ensuring that the workpiece is successfully formed and easy to remove.
Smart Images
Figure CN223801309U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to die technical field, concretely is a kind of stamping back extrusion die. BACKGROUND
[0002] Die is a kind of mould and tool for forming product, and this tool is composed of various parts, and the appearance of product is mainly obtained by changing the physical state of the formed material. In industrial production, it is often used for injection molding, blow molding, forging and forming. Die is divided into plastic die, stamping die and the like. Among them, stamping die is widely used for stamping of metal parts.
[0003] However, the existing stamping die lacks compaction measures at the edge of the broken position of the workpiece during use, for example, the Chinese patent document with publication number CN218462377U discloses a stamping die. When the punch is stamping the workpiece, the edge of the broken position of the workpiece lacks compaction measures, and during stamping, the workpiece will be subjected to an upward force, which can easily cause deformation of the uncut part. Therefore, a stamping back extrusion die is proposed. UTILITY MODEL CONTENT
[0004] The utility model aims to provide a kind of stamping back extrusion die to solve the problems raised in the above background.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a stamping back extrusion die, comprising a lower die seat and an upper die seat, the upper die seat is located above the lower die seat, the upper end of the lower die seat is fixedly installed with a lower die block, the middle part of the lower die block is provided with a die slot penetrating through the lower die block, a material return block is arranged in the die slot, the bottom of the material return block is provided with a back extrusion mechanism, the bottom of the upper die seat is fixedly installed with a stamping part, a pressing block is slidably sleeved on the outer wall of the stamping part, and the upper end of the pressing block is fixedly connected with the upper die seat by a plurality of first springs.
[0006] As a further preferred embodiment of the present technical solution, the stamping part is located above the die slot, and the stamping part and the die slot are mutually adapted.
[0007] As a further preferred embodiment of the present technical solution, the first spring is provided with a guide rod inside, the bottom of the guide rod is fixedly connected to the upper end of the pressing block, and the upper end of the guide rod slidably penetrates through the upper die seat.
[0008] As a further preferred embodiment of the present technical solution, the upper end of the guide rod is fixedly installed with a limiting block.
[0009] As a further preferred embodiment of the present technical solution, the lower surface of the pressing block is located below the lower surface of the stamping part.
[0010] As a further preferred of the technical solution, the back extrusion mechanism is composed of a movable plate, a fixed rod and a second spring, the movable plate is fixedly connected at the bottom of the material returning block, the upper end of the lower die seat is provided with a mounting groove for accommodating the movable plate, four movable holes are formed in the movable plate, the fixed rod is slidably inserted into the movable hole, the bottom of the fixed rod is fixedly connected at the bottom of the mounting groove, the upper end of the fixed rod is fixedly connected at the bottom of the lower die block, and the outer surface of the fixed rod is wound with the second spring, and the upper and lower ends of the second spring are fixedly connected with the lower die seat and the movable plate respectively.
[0011] As a further preferred of the technical solution, the upper end of the lower die seat is fixedly provided with a guide column on each side, and the upper die seat is provided with two guide holes that are slidably matched with the two guide columns.
[0012] The stamping back extrusion die has the following beneficial effects:
[0013] The pressing block, the first spring, the guide rod and the limiting block can compact the edge of the broken position of the workpiece, and avoid the workpiece from being upwardly buckled around when being broken. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a schematic view of the overall structure of the utility model;
[0015] Fig. 2 It is a split schematic view of the overall structure of the utility model;
[0016] Fig. 3 It is a split schematic view of the overall structure of the utility model from another perspective;
[0017] Fig. 4 It is a bottom view of the upper die seat in the utility model;
[0018] In the drawing: 1, lower die seat; 2, upper die seat; 3, lower die; 4, mounting groove; 5, die groove; 6, stamping part; 7, guide column; 8, guide hole; 9, pressing block; 10, guide rod; 11, first spring; 12, material returning block; 13, movable plate; 14, fixed rod; 15, second spring; 16, movable hole; 17, limiting block. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model.
[0020] The utility model provides technical schemes: Figs. 1 to 4As shown, in this embodiment, a stamping back extrusion die comprises a lower die seat 1 and an upper die seat 2, the upper die seat 2 is located above the lower die seat 1, the upper end of the lower die seat 1 is fixedly installed with a lower die block 3, the middle part of the lower die block 3 is provided with a die groove 5 penetrating through the lower die block 3, a material returning block 12 is arranged in the die groove 5, the bottom of the material returning block 12 is provided with a back extrusion mechanism, the bottom of the upper die seat 2 is fixedly installed with a stamping part 6, the stamping part 6 is located above the die groove 5, the stamping part 6 and the die groove 5 are mutually matched, a pressing block 9 is slidably sleeved on the outer wall of the stamping part 6, and the upper end of the pressing block 9 is fixedly connected with the upper die seat 2 through a plurality of first springs 11.
[0021] The inside of the first spring 11 is provided with a guide rod 10, the bottom of the guide rod 10 is fixedly connected with the upper end of the pressing block 9, and the upper end of the guide rod 10 slidably penetrates through the upper die seat 2.
[0022] In this way, the up-and-down movement of the pressing block 9 can be more stable.
[0023] The upper end of the guide rod 10 is fixedly installed with a limiting block 17.
[0024] The limiting block 17 can limit the maximum distance between the pressing block 9 and the upper die seat 2, so that the length of the first spring 11 in a normal state is greater than the maximum distance between the pressing block 9 and the upper die seat 2, and the first spring 11 can always be in a compressed state.
[0025] The lower surface of the pressing block 9 is located below the lower surface of the stamping part 6.
[0026] In this way, it can be ensured that the pressing block 9 can contact the workpiece first.
[0027] The back extrusion mechanism comprises a movable plate 13, a fixed rod 14 and a second spring 15, the movable plate 13 is fixedly connected with the bottom of the material returning block 12, the upper end of the lower die seat 1 is provided with a mounting groove 4 accommodating the movable plate 13, four movable holes 16 are formed in the movable plate 13, the fixed rod 14 is slidably inserted into the movable hole 16, the bottom of the fixed rod 14 is fixedly connected with the bottom of the mounting groove 4, the upper end of the fixed rod 14 is fixedly connected with the bottom of the lower die block 3, the outer surface of the fixed rod 14 is wound with the second spring 15, and the upper and lower ends of the second spring 15 are fixedly connected with the lower die seat 1 and the movable plate 13 respectively.
[0028] The second spring 15 is always in a compressed state, under the extrusion of the second spring 15, the movable plate 13 will be attached to the bottom of the lower die block 3, when the stamping part 6 stamps the workpiece, the material returning block 12 and the movable plate 13 will move downward and further compress the second spring 15, when the stamping part 6 returns to the initial position, the second spring 15 will drive the material returning block 12 and the movable plate 13 to move upward, so as to push the workpiece in the die groove 5 out.
[0029] The upper end of the lower die seat 1 is fixedly provided with guide columns 7 on both sides, and the upper die seat 2 is provided with guide holes 8 which are in sliding engagement with the guide columns 7.
[0030] The guide columns 7 and the guide holes 8 can make the upper die seat 2 and the lower die seat 1 more stable when they are combined.
[0031] The utility model provides a stamping back extrusion mould, and the specific working principle is as follows:
[0032] When in use, the lower die seat 1 is installed on the processing table of a stamping machine, the upper die seat 2 is fixed on the driving module of the stamping machine, the workpiece is placed on the lower module 3, the upper die seat 2 is driven to move downwards by the driving module of the stamping machine, the pressing block 9 at the bottom of the upper die seat 2 will press the workpiece contacted by the first stamping piece 6, the workpiece is fixed by the pressing block 9, the first spring 11 between the pressing block 9 and the upper die seat 2 is further compressed with the continuous downward movement of the upper die seat 2, so that the clamping force of the pressing block 9 on the workpiece is improved, the workpiece is stamped when the bottom of the stamping piece 6 passes through the pressing block 9, the workpiece is broken by the stamping piece 6 and enters the die groove 5, the material return block 12 in the die groove 5 moves downwards, the movable plate 13 is driven to move downwards by the material return block 12, so that the second spring 15 is further compressed, when the stamping piece 6 returns to the initial position, the material return block 12 and the movable plate 13 are driven to move upwards by the second spring 15, so that the formed workpiece in the die groove 5 is pushed out, and the workpiece is difficult to take out in the die groove 5.
[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A punch-back extrusion die comprising a lower die seat (1) and an upper die seat (2), characterized in that: The upper die seat (2) is located above the lower die seat (1), the upper end of the lower die seat (1) is fixedly installed with a lower die block (3), the middle part of the lower die block (3) is provided with a die groove (5) penetrating through the lower die block (3), the die groove (5) is provided with a material returning block (12), the bottom of the material returning block (12) is provided with a back extrusion mechanism, the bottom of the upper die seat (2) is fixedly installed with a stamping part (6), the outer wall of the stamping part (6) is slidably sleeved with a pressing block (9), and the upper end of the pressing block (9) is fixedly connected with the upper die seat (2) through a plurality of first springs (11).
2. A back extrusion die according to claim 1, wherein: The stamping part (6) is located above the die groove (5), and the stamping part (6) and the die groove (5) are matched with each other.
3. A back extrusion die as claimed in claim 1, wherein: The first spring (11) is provided with a guide rod (10) in the inside, the bottom of the guide rod (10) is fixedly connected with the upper end of the pressing block (9), and the upper end of the guide rod (10) is slidably penetrated through the upper die seat (2).
4. A back extrusion die according to claim 3, wherein: The upper end of the guide rod (10) is fixedly installed with a limiting block (17).
5. A back extrusion die as claimed in claim 1, wherein: The lower surface of the pressing block (9) is located below the lower surface of the stamping part (6).
6. A back extrusion die as claimed in claim 1, wherein: The back extrusion mechanism is composed of a movable plate (13), a fixed rod (14) and a second spring (15), the bottom of the movable plate (13) is fixedly connected with the material returning block (12), the upper end of the lower die seat (1) is provided with a mounting groove (4) accommodating the movable plate (13), four movable holes (16) are formed in the movable plate (13), the fixed rod (14) is slidably inserted into the movable hole (16), the bottom of the fixed rod (14) is fixedly connected with the bottom of the mounting groove (4), the upper end of the fixed rod (14) is fixedly connected with the bottom of the lower die block (3), the outer surface of the fixed rod (14) is wound with the second spring (15), and the upper and lower ends of the second spring (15) are fixedly connected with the lower die seat (1) and the movable plate (13) respectively.
7. A back extrusion die as claimed in claim 1, wherein: The upper end of the lower die seat (1) is fixedly installed with a guide column (7) on both sides, and the upper die seat (2) is provided with two guide holes (8) slidably matched with the two guide columns (7).