Progressive stamping die for perforated plate

Abstract

The utility model discloses a kind of multi-orifice plate's progressive stamping die of stable feeding, including upper die holder and lower die holder, nine processing stations are equipped in upper die, fixed plate is equipped on lower die holder, material pressing plate is equipped on upper die holder by several nitrogen gas springs, through-hole punch for punching a pair of through holes on workpiece, butterfly-shaped blanking block for punching a pair of butterfly-shaped through holes on workpiece, upper stamping block for forming and processing two side edges of workpiece, a word blanking block for punching outside part of butterfly-shaped blanking block on workpiece are equipped on material pressing plate;Fixed plate is equipped with through-hole die knob matched with through-hole punch, lower die holder is equipped with matched die knob block, two butterfly-shaped die knob holes are equipped in die knob block, a pair of matched lower stamping blocks are equipped on lower die holder at seventh station;Avoidance hole for avoiding die knob block, two lower stamping blocks and supporting block is equipped on fixed plate;Lower die holder is equipped with a word die knob block matched with a word blanking block, fixed plate is equipped with avoidance notch for avoiding a word die knob block.

Description

Technical Field

[0001] This utility model relates to a stamping processing equipment, specifically the design of a progressive stamping die for a perforated plate. Background Technology

[0002] In general mold processing, parts such as punches, upper cutting blocks, and upper forming blocks are placed on the upper mold base, while the various punching dies, lower cutting blocks, and lower forming blocks are directly placed on the lower mold base. A floating pressure plate is also installed to pre-press the sheet metal. This structure results in the punches, upper cutting blocks, and upper forming blocks on the upper mold base, as well as the various punching dies, lower cutting blocks, and lower forming blocks on the lower mold base, being subjected to significant impact forces during stamping, making them prone to damage and reducing the mold's lifespan. Furthermore, two rows of locating pins are typically installed on the lower mold base to restrict the edges of the sheet metal. This limiting and guiding structure requires high dimensional accuracy in the width direction of the sheet metal and is prone to scratching and deformation during feeding. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a progressive stamping die for a perforated plate with stable feeding and long service life.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a progressive stamping die for a multi-hole plate, including an upper die and a lower die. The upper die includes an upper die base, and the lower die includes a lower die base. The upper die base is provided with nine processing stations. Three positioning punches for punching positioning holes in the middle and both sides of the workpiece are provided on the upper die base at the first station. A fixing plate is provided on the lower die base, and three positioning punching die buttons that cooperate with the three positioning punches are provided on the fixing plate. A pressure plate is provided on the upper die base through several nitrogen springs, and several clearance holes for each positioning punch are provided on the pressure plate.

[0005] The pressure plate has a through-hole punch at the third station for punching a pair of through holes on the workpiece; the fixed plate has a matching through-hole die button, and the lower die base has a matching pair of scrap through holes; the pressure plate has a butterfly blanking block at the sixth station for punching a pair of butterfly through holes on the workpiece; the lower die base has a matching die button block, the die button block has two butterfly die button holes, and the fixed plate has a clearance slot for avoiding the die button block;

[0006] The pressure plate has a pair of upper stamping forming blocks at the seventh station for forming the two sides of the workpiece; the lower die base has a pair of matching lower stamping forming blocks at the seventh station; the lower die base has material support blocks at the seventh and eighth stations, and the material support blocks have elastic positioning pins; the fixing plate has clearance holes for the two lower stamping forming blocks and the material support blocks.

[0007] The pressure plate has a straight blanking block on the tenth station for punching the outer part of the butterfly blanking block on the workpiece; the lower die base has a matching straight die button block, and the fixing plate has a clearance groove to avoid the straight die button block;

[0008] The lower die base is provided with several side lifting positioning blocks at the corresponding two sides of the sheet metal. The side lifting positioning block includes a positioning block body movably disposed in the lower die base. The positioning block body is provided with a through threaded hole. The positioning block body is provided with an upper limit block that can be moved and adjusted along the width direction of the sheet metal. The lower part of the right side face of the upper limit block near the workpiece is provided with an inwardly recessed positioning groove. The upper limit block is provided with a locking elongated hole. The locking bolt passes through the locking elongated hole and is connected to the threaded hole.

[0009] As a preferred embodiment, the lower die base is provided with a pair of elastic positioning pins at each station except the first station, which are respectively equipped with positioning holes on the side of the workpiece, and the pressure plate is provided with positioning clearance holes to avoid the elastic positioning pins.

[0010] As a preferred embodiment, the upper mold base is provided with a number of side elastic pressure pins on both sides, and the pressure plate is provided with a number of clearance holes to avoid the side elastic pressure pins.

[0011] As a preferred embodiment, the upper mold base is provided with a pair of central elastic pressure pins that pass through the two butterfly-shaped blanking blocks respectively.

[0012] As a preferred embodiment, the single-piece button block is provided with positioning pins that mate with a pair of through holes on the workpiece.

[0013] As a preferred embodiment, the lower die base is provided with a pair of side limiting blocks at the feeding point to restrict the side edges of the workpiece sheet.

[0014] The beneficial effects of this utility model are:

[0015] This mold features a fixed plate on the lower mold base and a pressure plate on the upper mold base via several nitrogen springs. The through-hole punch, upper stamping forming block, and straight blanking block are mounted on the pressure plate, which is connected to the upper mold base via several nitrogen springs. The pressure plate effectively disperses the impact force during mold closing and simplifies the upper mold structure, reducing mold manufacturing costs. The fixed plate also distributes the impact force of the upper mold, reducing the stamping force on the die button block, lower stamping forming block, material support block, and straight die button block on the lower mold base. This extends the mold's service life while ensuring machining accuracy.

[0016] Furthermore, the lower die base is provided with several side lifting and positioning blocks on the sides corresponding to the two sides of the sheet metal. Each side lifting and positioning block includes a positioning block body movably disposed in the lower die base. The positioning block body has a through threaded hole and an upper limit block that can be adjusted along the width direction of the sheet metal. The lower right side of the upper limit block near the workpiece has an inwardly recessed positioning groove and a locking elongated hole. The locking bolt passes through the locking elongated hole and connects to the threaded hole. This makes feeding more convenient as the two sides of the sheet metal are limited and guided by the positioning groove of the upper limit block. Moreover, by adjusting the position of the upper limit block, even raw materials with relatively low accuracy in the width direction of the sheet metal can pass through smoothly.

[0017] Since the upper die base is provided with several side elastic pressure pins on both sides, and the pressure plate is provided with several clearance holes to avoid the side elastic pressure pins, the workpiece is pressed down before stamping to ensure the accuracy of workpiece processing.

[0018] Because the upper die holder is provided with a pair of elastic pressure pins that pass through the middle of the two butterfly-shaped blanking blocks respectively, the material is prevented from deforming during the punching process, making the punching and blanking of the butterfly blocks more accurate.

[0019] Because the die block is equipped with positioning pins that mate with a pair of through holes on the workpiece, the accuracy of the punching process is further guaranteed.

[0020] Because the lower die base is provided with a pair of side limit blocks at the feeding point to restrict the side of the workpiece plate, it plays a guiding role, making the feeding fast and accurate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the upper mold structure.

[0022] Figure 2 This is a schematic diagram of the lower mold structure.

[0023] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0024] In the diagram: 1 Upper die base, 2 Lower die base, 3 Side lifting positioning block, 4 Positioning block body, 5 Upper limit block, 6 Locking bolt, 7 Positioning punch, 8 Positioning punching die button; 9 Through hole punch; 10 Through hole die button; 11 Butterfly blanking block; 12 Butterfly die button; 13 Straight blanking block; 14 Straight die button block; 15 Elastic positioning pin; 16 Positioning post, 17 Side limit block, 18 Pressure plate, 19 Upper stamping forming block; 20 Lower stamping forming block; 21 Material support block, 22 Elastic positioning pin, 23 Fixing plate, 24 Central elastic pressure pin, 25 Side elastic pressure pin. Detailed Implementation

[0025] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figure 1-3 As shown, a progressive stamping die for a perforated plate includes an upper die and a lower die. The upper die includes an upper die base 1, and the lower die includes a lower die base 2. The lower die base 2 is provided with a plurality of side lifting positioning blocks 3 at the corresponding sides of the plate. The side lifting positioning blocks 3 include a positioning block body 4 movably disposed in the lower die base 2. The positioning block body 4 is provided with a through threaded hole. The positioning block body 4 is provided with an upper limit block 5 that can be adjusted movably along the width direction of the plate. The lower part of the right side face of the upper limit block 5 near the workpiece is provided with an inwardly recessed positioning groove. The upper limit block 5 is provided with a locking elongated hole. The locking bolt 6 passes through the locking elongated hole and is connected to the threaded hole.

[0027] The upper die base 1 has nine processing stations. The upper die base 1 has three positioning punches 7 at the first station for punching positioning holes in the middle and on both sides of the workpiece. The lower die base 2 has a fixing plate 23, and the fixing plate 23 has three positioning punching die buttons 8 that cooperate with the three positioning punches 7. The upper die base 1 has a pressure plate 18 through several nitrogen springs, and the pressure plate 18 has several clearance holes to avoid each positioning punch 7.

[0028] The pressure plate 18 is provided with a through-hole punch 9 for punching a pair of through holes on the workpiece at the third station; the fixed plate 23 is provided with a matching through-hole die button 10, and the lower die base 2 is provided with a matching pair of scrap through holes; the pressure plate 18 is provided with a butterfly blanking block 11 for punching a pair of butterfly through holes on the workpiece at the sixth station; the lower die base 2 is provided with a matching die button block, the die button block is provided with two butterfly die button 12 holes, and the fixed plate 23 is provided with a clearance slot to avoid the die button block;

[0029] The pressure plate 18 has a pair of upper stamping forming blocks 19 at the seventh station for forming the two sides of the workpiece; the lower die base 2 has a pair of matching lower stamping forming blocks 20 at the seventh station; the lower die base 2 has material support blocks 21 at the seventh and eighth stations, and the material support blocks 21 have elastic positioning pins 15; the fixing plate 23 has clearance holes to avoid the two lower stamping forming blocks 20 and the material support blocks 21.

[0030] The pressure plate 18 has a straight blanking block 13 at the tenth station for punching the outer part of the butterfly blanking block 11 on the workpiece; the lower die base 2 has a matching straight die button block 14, and the fixing plate 23 has a clearance slot to avoid the straight die button block 14. The straight die button block 14 has a positioning post 16 that matches a pair of through holes on the workpiece.

[0031] The lower die base 2 is provided with a pair of side limiting blocks 17 at the feeding point to restrict the side of the workpiece plate. The lower die base 2 is provided with a pair of elastic positioning pins 22 at each station except the first station, which are matched with the positioning holes on the side of the workpiece. The pressure plate 18 is provided with positioning avoidance holes to avoid the elastic positioning pins 22.

[0032] The upper mold base 1 is provided with a pair of central elastic pressing pins 24 that pass through the two butterfly-shaped blanking blocks 11 respectively. Several side elastic pressing pins 25 are provided on both sides of the upper mold base 1, and several clearance holes are provided on the pressing plate 18 to avoid the side elastic pressing pins 25.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the protection scope of the present invention.

Claims

1. A progressive stamping die for a perforated plate, comprising an upper die and a lower die, the upper die comprising an upper die base (1) and the lower die comprising a lower die base (2), characterized in that: The upper mold base (1) is provided with nine processing stations. The upper mold base (1) is provided with three positioning punches (7) for punching positioning holes in the middle and both sides of the workpiece at the first station. The lower mold base (2) is provided with a fixing plate (23). The fixing plate (23) is provided with three positioning punching die buttons (8) that cooperate with the three positioning punches (7). The upper mold base (1) is provided with a pressure plate (18) through several nitrogen springs. The pressure plate (18) is provided with several clearance holes to avoid each positioning punch (7). The pressure plate (18) is provided with a through-hole punch (9) for punching a pair of through holes on the workpiece at the third station; the fixed plate (23) is provided with a matching through-hole die button (10), and the lower die base (2) is provided with a matching pair of waste through holes; the pressure plate (18) is provided with a butterfly blanking block (11) for punching a pair of butterfly through holes on the workpiece at the sixth station; the lower die base (2) is provided with a matching die button block, the die button block is provided with two butterfly die button (12) holes, and the fixed plate (23) is provided with a clearance slot for the clearance die button block; The pressure plate (18) has a pair of upper stamping forming blocks (19) at the seventh station for forming the two sides of the workpiece; the lower die base (2) has a pair of matching lower stamping forming blocks (20) at the seventh station; the lower die base (2) has a material support block (21) at the seventh and eighth stations, and the material support block (21) has an elastic positioning pin (22); the fixing plate (23) has clearance holes to avoid the two lower stamping forming blocks (20) and the material support block (21); The pressure plate (18) is provided with a straight blanking block (13) on the outer part of the butterfly blanking block (11) on the stamping workpiece at the tenth station; the lower die base (2) is provided with a matching straight die button block (14), and the fixing plate (23) is provided with a clearance slot to avoid the straight die button block (14); The lower mold base (2) is provided with several side lifting positioning blocks (3) corresponding to the two sides of the sheet metal. The side lifting positioning block (3) includes a positioning block body (4) movably disposed in the lower mold base (2). The positioning block body (4) is provided with a through threaded hole. The positioning block body (4) is provided with an upper limit block (5) that can be adjusted along the width direction of the sheet metal. The lower part of the right side face of the upper limit block (5) near the workpiece is provided with an inwardly recessed positioning groove. The upper limit block (5) is provided with a locking elongated hole. The locking bolt (6) passes through the locking elongated hole and is connected to the threaded hole.

2. The progressive stamping die for a perforated plate as described in claim 1, characterized in that: The lower mold base (2) is provided with a pair of elastic positioning pins (22) that cooperate with the positioning holes on the side of the workpiece at each station except the first station, and the pressure plate (18) is provided with positioning avoidance holes to avoid the elastic positioning pins (22).

3. The progressive stamping die for a perforated plate as described in claim 1, characterized in that: The upper mold base (1) is provided with several side elastic pressure pins (25) on both sides, and the pressure plate (18) is provided with several clearance holes to avoid the side elastic pressure pins (25).

4. The progressive stamping die for a perforated plate as described in claim 1, characterized in that: The upper mold base (1) is provided with a pair of central elastic pressing pins (24) that pass through the two butterfly-shaped material dropping blocks (11) respectively.

5. The progressive stamping die for a perforated plate as described in claim 1, characterized in that: The one-piece mold button block (14) is provided with a positioning post (16) that matches a pair of through holes on the workpiece.

6. A progressive stamping die for a perforated plate as described in any one of claims 1-5, characterized in that: The lower mold base (2) is provided with a pair of side limiting blocks (17) at the feeding point to restrict the side of the workpiece plate.

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