Sectional type insert stamping and scraping die and process thereof

Abstract

The sectional type insert stamping and scraping die comprises a top, a hydraulic cylinder is fixedly connected to the bottom of the top plate, a connecting frame is fixedly connected to the output end of the hydraulic cylinder, a first fixing seat is fixedly connected to the bottom of the connecting frame, a mounting groove is formed in the surface of the first fixing seat, and a male die insert is inserted into the inner wall of the mounting groove. According to the sectional type insert stamping and scraping die, through cooperation of a servo motor, a transmission shaft, a fixing plate, a fixing ring and a fixing plate, the male die insert is rapidly replaced, when a cutting edge of a certain sectional type insert is seriously damaged, a new insert can be replaced without overall disassembly and assembly, and the machining efficiency is improved. And compared with a traditional bolt fastening mode, the replacement time of the sectional type insert is greatly shortened, the mold maintenance efficiency is improved, and the mold maintenance cost is also saved.

Description

Technical Field

[0001] This invention relates to the field of cutting and machining technology, specifically to a segmented insert stamping and scraping die and its process. Background Technology

[0002] A stamping and scraping die is a special stamping die that achieves high-precision material separation of a workpiece through the precise cooperation of a punch and a die, using a combination of shearing and scraping.

[0003] When using traditional stamping and cutting dies, the operator can make the cut of the workpiece smoother and burr-free by cooperating with the punch and die.

[0004] However, in actual processing, the punch inserts of traditional stamping and scraping dies often adopt an integral structure or a segmented structure fastened by multiple sets of bolts. When the local cutting edge of the segmented insert is worn or chipped due to long-term scraping, the insert must be completely disassembled or the fixing bolts must be unscrewed one by one. This not only makes the replacement operation cumbersome and causes the production line to be down for too long, but may also cause the waste of unworn parts due to the overall disassembly and assembly, increasing the mold maintenance cost. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a segmented insert stamping and scraping die, which solves the problem that traditional stamping and scraping dies often use integral or segmented structures for the punch inserts, which are fastened by multiple sets of bolts. When the cutting edges of the segmented inserts suffer wear, chipping, or other damage due to long-term scraping, the entire insert must be disassembled or the fixing bolts must be unscrewed one by one. This not only makes the replacement operation cumbersome and causes excessive downtime on the production line, but also may result in the waste of unworn parts due to the overall disassembly and assembly, increasing the maintenance cost of the die.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a segmented insert stamping and scraping die, comprising a top plate, a hydraulic cylinder fixedly connected to the bottom of the top plate, a connecting frame fixedly connected to the output end of the hydraulic cylinder, a first fixing seat fixedly connected to the bottom of the connecting frame, an installation groove formed on the surface of the first fixing seat, a punch insert inserted into the inner wall of the installation groove, a die insert disposed below the punch insert, the segmented insert stamping and scraping die further comprising a fixing mechanism disposed above the punch insert; a compensation mechanism disposed inside the punch insert; and a positioning mechanism disposed on the side of the fixing mechanism; wherein, the fixing mechanism quickly fixes the punch insert, the compensation mechanism adaptively compensates for the punch insert, and the positioning mechanism ensures the installation stability of the punch insert.

[0007] Preferably, the fixing mechanism includes a servo motor, which is fixedly connected to the top of the top plate, and its output end extends to the bottom of the top plate through a sealed bearing; a drive shaft is fixedly connected to the output end of the servo motor, and its outer wall is movable within the inner wall of the connecting frame, and is rotatably connected to the top of the first fixed seat through a sealed bearing; a fixing plate is threadedly connected to the outer wall of the drive shaft, and its outer wall is slidably connected to the side wall of the connecting frame; a fixing ring is fixedly connected to the bottom of the fixing plate, and its outer wall is fitted against the inner wall of the mounting groove; a fixing piece is fitted against the bottom of the fixing ring and the inner wall of the mounting groove, and is fixedly connected to the top of the punch insert; wherein, the punch insert is quickly fixed through the cooperation of the servo motor, drive shaft, fixing plate, fixing ring and fixing piece.

[0008] Preferably, the compensation mechanism includes a connecting groove formed on the outer wall of the punch insert; a connecting post machined on the side of the outer wall of the punch insert away from the connecting groove; a blind hole formed at the bottom of the inner wall of the connecting groove; a first spring fixedly connected to the bottom of the inner wall of the blind hole; and a compensation block inserted into the inner wall of the connecting groove and fixedly connected to the end of the first spring. The punch insert is adaptively spliced ​​and compensated through the cooperation of the connecting groove, connecting post, blind hole, first spring, and compensation block.

[0009] Preferably, the positioning mechanism includes a positioning rod, which is disposed above the fixed plate and rotatably connected to the top of the first fixed seat via a sealed bearing; a first positioning element is disposed above the fixed plate and fixedly connected to the inner wall of the positioning rod; a loading groove is opened at the top of the fixed plate; and a second positioning element is fixedly connected to the inner wall of the loading groove, with its top abutting against the bottom of the first positioning element; wherein, the cooperation of the positioning rod, the first positioning element, the loading groove, and the second positioning element ensures the installation stability of the punch insert.

[0010] Preferably, a clamping unit is provided below the first fixed seat. The clamping unit includes a clamping plate, which is located below the first fixed seat and its inner wall is sleeved on the outer wall of the punch insert. Four limiting rods are provided, which are fixedly connected to the top four corners of the clamping plate, and their ends pass through the bottom four corners of the first fixed seat and extend to the top of the first fixed seat. Four second springs are provided, which are all located between the first fixed seat and the clamping plate and are sleeved on the outer wall of the four limiting rods. The workpiece is clamped and fixed by the cooperation of the clamping plate, the limiting rods and the second springs.

[0011] Preferably, a second fixing seat is fixedly connected to the bottom of the die insert, and a support frame is fixedly connected to both sides of the outer wall of the second fixing seat. The ends of the two support frames are respectively fixedly connected to both sides of the outer wall of the top plate.

[0012] Preferably, a limiting groove is formed on the top of the fixing plate, and a limiting block is fixedly connected to the side of the top of the fixing plate away from the limiting groove.

[0013] The present invention also provides a segmented insert stamping and scraping process, comprising the following steps: S1. Start the servo motor. The output of the servo motor drives the transmission shaft to rotate synchronously. The transmission shaft drives the fixed plate to move in the vertical direction. The fixed plate drives the fixed ring to rise. The bottom of the fixed ring leaves the fixed plate. S2. Stop the servo motor, remove the punch insert that needs to be replaced, replace it with a new punch insert, and restart the servo motor. The servo motor drives the fixing plate to descend through the transmission shaft, and the fixing plate drives the fixing ring to press against the fixing plate again, thereby fixing the punch insert. S3. Connect multiple punch inserts end to end in sequence, then the connecting post on the side wall of the rear punch insert is inserted into the connecting groove on the side wall of the front punch insert, and the outer wall of the connecting post of the rear punch insert will fit tightly with the compensation block in the connecting groove of the front punch insert. S4. Place the workpiece on top of the die insert, start the hydraulic cylinder, the hydraulic cylinder drives the connecting frame to move, the connecting frame drives the first fixed seat to move, the abutment plate follows the first fixed seat to move, the bottom of the abutment plate will contact the workpiece to be processed first, as the first fixed seat descends, compressing the second spring, the second spring transmits the pressure to the abutment plate, so that the abutment plate abuts and fixes the workpiece. S5. The first fixed seat drives the punch insert to move through the fixing mechanism to perform scraping; S6. The punch insert is subjected to radial scraping force. If adjacent punch inserts form a splicing step due to installation deviation or force deformation, the connecting column will exert pressure on the compensation block. The compensation block will undergo slight deformation and squeeze the first spring, thereby automatically filling the step gap, ensuring the annular continuity of the punch cutting edge, and avoiding burrs or tears on the workpiece cut due to the step during scraping. Beneficial effects

[0014] This invention provides a segmented insert stamping and scraping die and its process. It offers the following advantages: This segmented insert stamping and scraping die, through the cooperation of a servo motor, drive shaft, fixing plate, fixing ring, and fixing plate, enables rapid replacement of punch inserts. When the cutting edge of a segmented insert is severely worn, a new insert can be replaced without overall disassembly. Compared to traditional bolt fastening methods, this significantly shortens the replacement time for segmented inserts, improving die maintenance efficiency and saving die maintenance costs.

[0015] Through the cooperation of connecting groove, connecting column, blind hole, first spring and compensation block, the adaptive splicing compensation of segmented punch insert is realized. When there is a step caused by machining or installation error, the compensation block can generate elastic deformation with the force and automatically fill the gap, ensuring the annular continuity of punch cutting edge, effectively avoiding burrs or cut tearing caused by step during scraping, and improving the workpiece cutting accuracy and surface quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance of the present invention; Figure 2 for Figure 1 A diagram illustrating the split structure in the diagram; Figure 3 for Figure 1 Schematic diagram of the middle clamping unit; Figure 4 for Figure 1 Schematic diagram of the fixed mechanism in the middle; Figure 5 for Figure 1 A schematic diagram of the structure of the compensation mechanism; Figure 6 for Figure 1 Schematic diagram of the middle fixing plate; Figure 7 for Figure 5 Schematic diagram of the structure of the central punch insert and connecting column; Figure 8 for Figure 3 A schematic diagram of the middle positioning rod and the first positioning component.

[0017] Explanation of reference numerals in the attached drawings: 1. Top plate; 11. Hydraulic cylinder; 12. Connecting frame; 13. First fixed seat; 131. Mounting groove; 14. Second fixed seat; 15. Support frame; 2. Punch insert; 3. Die insert; 4. Fixing mechanism; 41. Servo motor; 42. Drive shaft; 43. Fixing plate; 44. Fixing ring; 45. Fixing plate; 451. Limiting groove; 452. Limiting block; 5. Compensation mechanism; 51. Connecting groove; 52. Connecting column; 53. Blind hole; 54. First spring; 55. Compensation block; 6. Positioning mechanism; 61. Positioning rod; 62. First positioning element; 63. Loading groove; 64. Second positioning element; 7. Clamping unit; 71. Clamping plate; 72. Limiting rod; 73. Second spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Traditional stamping and scraping dies often use integral or segmented structures for the punch inserts, which are fastened by multiple sets of bolts. When the cutting edges of the segmented inserts are worn or chipped due to long-term scraping, the inserts must be disassembled as a whole or the fixing bolts must be unscrewed one by one. This not only makes the replacement operation cumbersome and causes the production line to be down for too long, but may also waste the unworn parts due to the overall disassembly and assembly, increasing the mold maintenance cost.

[0020] In view of this, the present invention provides a segmented insert stamping and scraping die. This segmented insert stamping and scraping die, through the cooperation of a servo motor, a drive shaft, a fixing plate, a fixing ring, and a fixing plate, enables rapid replacement of punch inserts. When the cutting edge of a segmented insert is severely worn, a new insert can be replaced without the need for complete disassembly. Compared with the traditional bolt fastening method, it significantly shortens the replacement time of segmented inserts, not only improving the mold maintenance efficiency but also saving mold maintenance costs.

[0021] Those skilled in the art will connect the electrical components and their compatible power supplies in this case using wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0023] Example 1: By Figure 1-8 It is known that a segmented insert stamping and scraping die includes a top plate 1, a hydraulic cylinder 11 fixedly connected to the bottom of the top plate 1, a connecting frame 12 fixedly connected to the output end of the hydraulic cylinder 11, a first fixed seat 13 fixedly connected to the bottom of the connecting frame 12, an installation groove 131 opened on the surface of the first fixed seat 13, a punch insert 2 inserted into the inner wall of the installation groove 131, and a die insert 3 arranged below the punch insert 2. The segmented insert stamping and scraping die also includes a fixing mechanism 4, a compensation mechanism 5 and a positioning mechanism 6. The fixing mechanism 4 is arranged above the punch insert 2; the compensation mechanism 5 is arranged inside the punch insert 2; and the positioning mechanism 6 is arranged on the side of the fixing mechanism 4. The fixing mechanism 4 quickly fixes the punch insert 2, the compensation mechanism 5 performs adaptive splicing compensation for the punch insert 2, and the positioning mechanism 6 ensures the installation stability of the punch insert 2. In the specific implementation process, it is worth noting that the top plate 1 has a plate-like structure, and four hydraulic cylinders 11 are provided. The specific model can be selected according to actual needs, as long as it meets the working requirements. For example, it can be the HOB63×150 model. The matching component can be the DSG-01-3C4-D24 electromagnetic directional valve to realize the rapid start and stop of the hydraulic cylinders 11. The connecting frame 12 consists of a horizontal plate with the same shape as the top plate 1 and two symmetrically arranged vertical plates with a 'convex' shaped cross section. The two vertical plates are fixed to the bottom sides of the horizontal plate by bolts. The two vertical plates are directly fixed to the top sides of the first fixed seat 13. The first fixed seat 13 consists of two parts, with a 'T' shaped mounting groove 131 formed between its interior and exterior. The interior part of the first fixed seat 13 is connected to the outer wall of the fixing mechanism 4 through a sealed bearing, and the exterior part is connected to the other part of the first fixed seat 13. Part is fixedly connected to the connecting frame 12, and the outer periphery of the ring on the first fixed seat 13 is provided with four circular through holes with sealed bearings. These through holes are connected to the positioning mechanism 6. Four more circular through holes are provided around the four circular through holes with sealed bearings. Multiple punch inserts 2 are provided, and the specific number can be set according to actual needs, for example, four. The punch insert 2 and the die insert 3 (cutting edge part) are made of cemented carbide YG8, and the two cutting edge parts are respectively bonded to the steel base of the punch insert 2 and the die insert 3 by silver soldering. The die insert 3 is used to place the workpiece, and the punch insert 2 is used to process the workpiece. In actual use, the operator quickly fixes the punch insert 2 through the fixing mechanism 4, performs adaptive splicing compensation of the punch insert 2 through the compensation mechanism 5, and ensures the installation stability of the punch insert 2 through the positioning mechanism 6. Furthermore, the fixing mechanism 4 includes a servo motor 41, a drive shaft 42, a fixing plate 43, a fixing ring 44, and a fixing piece 45. The servo motor 41 is fixedly connected to the top of the top plate 1, and its output end extends to the bottom of the top plate 1 through a sealed bearing. The drive shaft 42 is fixedly connected to the output end of the servo motor 41, and its outer wall is movable within the inner wall of the connecting frame 12, and is rotatably connected to the top of the first fixing seat 13 through a sealed bearing. The fixing plate 43 is threadedly connected to the outer wall of the drive shaft 42, and its outer wall is slidably connected to the side wall of the connecting frame 12. The fixing ring 44 is fixedly connected to the bottom of the fixing plate 43, and its outer wall is attached to the inner wall of the mounting groove 131. The fixing piece 45 is attached to the bottom of the fixing ring 44 and the inner wall of the mounting groove 131, and is fixedly connected to the top of the punch insert 2. The punch insert 2 is quickly fixed through the cooperation of the servo motor 41, the drive shaft 42, the fixing plate 43, the fixing ring 44, and the fixing piece 45. In the specific implementation process, it is worth noting that the servo motor 41 is fixed to the top of the top plate 1 by bolts. Its model can be selected according to actual working needs, for example, it can be the HG-KR13B model. The drive shaft 42 is a circular rod-shaped structure with external threads machined on the lower part of its outer wall. The fixing plate 43 is a circular plate-shaped structure with a threaded hole in its center, which allows it to be threadedly connected to the drive shaft 42. Rectangular grooves are opened on both sides of the outer wall of the fixing plate 43. These grooves cooperate with the two convex vertical plates of the connecting bracket 12 to limit the position of the fixing plate 43. The fixing ring 44 can be made of 40Cr. Its outer wall also has rectangular grooves that extend directly into the interior of the mounting groove 131. Its bottom is directly attached to the fixing piece 45. Multiple fixing pieces 45 are provided, the same number as the punch insert 2. Multiple fixing pieces 45 can be connected end to end to form a ring. In actual use, when it is necessary to install or replace the punch insert 2, the operator connects the servo motor through an external controller. The external power supply of motor 41 is turned on, and servo motor 41 is started. The output end of servo motor 41 drives transmission shaft 42 to rotate synchronously. Since the fixing plate 43 is connected to the external thread of transmission shaft 42 through the central threaded hole, and the rectangular groove on the outer wall of fixing plate 43 slides with the convex vertical plate of connecting frame 12, transmission shaft 42 drives fixing plate 43 to move vertically. Fixing plate 43 rises, fixing plate 43 drives fixing ring 44 to rise, and the bottom of fixing ring 44 leaves fixing plate 45. At this time, servo motor 41 is stopped, and the section of punch insert 2 that needs to be replaced is taken out and replaced with a new punch insert 2. Then, servo motor 41 is started again. Servo motor 41 drives fixing plate 43 to descend through transmission shaft 42. Fixing plate 43 drives fixing ring 44 to press against fixing plate 45 again, thereby fixing punch insert 2. Therefore, compared with the traditional fastening method, the replacement time of segmented punch insert 2 is greatly shortened, which not only improves mold maintenance efficiency, but also saves mold maintenance costs. Furthermore, the compensation mechanism 5 includes a connecting groove 51, a connecting post 52, a blind hole 53, a first spring 54, and a compensation block 55. The connecting groove 51 is formed on the outer wall of the punch insert 2; the connecting post 52 is machined on the outer wall of the punch insert 2 away from the connecting groove 51; the blind hole 53 is formed at the bottom of the inner wall of the connecting groove 51; the first spring 54 is fixedly connected to the bottom of the inner wall of the blind hole 53; the compensation block 55 is inserted into the inner wall of the connecting groove 51 and fixedly connected to the end of the first spring 54; wherein, through the cooperation of the connecting groove 51, the connecting post 52, the blind hole 53, the first spring 54, and the compensation block 55, adaptive splicing compensation is performed on the punch insert 2; In the specific implementation process, it is worth noting that the connecting groove 51 has a semi-circular cross-section, with the radius gradually decreasing from top to bottom. The shape of the connecting post 52 is exactly the same as that of the connecting groove 51, and the two can achieve a wedge-shaped connection. The blind hole 53 is opened at the bottom of the connecting groove 51. It is a circular groove, and a first spring 54 is fixed on its inner wall. The material of the first spring 54 can be piano wire, and its specific elastic coefficient can be selected according to actual needs to meet the working requirements. The compensation block 55 is composed of a semi-circular plate and a cylinder. Its material can be 65Mn spring steel. Its elastic deformation can compensate for the splicing steps. In actual use, the operator connects multiple punch inserts 2 end to end. Then, the connecting post 52 on the side wall of the rear punch insert 2 is inserted into the connecting groove 51 on the side wall of the front punch insert 2. The outer wall of the connecting post 52 of the rear punch insert 2 will fit tightly with the compensation block 55 in the connecting groove 51 of the front punch insert 2. In the non-working state, the first spring 54 in the blind hole 53 is in a pre-compressed state, pushing the compensation block 55 to always press against the surface of the connecting post 52. With the cooperation of the compensation block 55, the connecting groove 51, and the connecting post 52, the initial fitting accuracy of the splicing surface is guaranteed. When the mold is performing scraping operation, the punch insert 2 is subjected to radial scraping force. If the adjacent punch insert 2 produces a splicing step due to installation deviation or force deformation, the connecting post 52 will exert pressure on the compensation block 55. The compensation block 55 undergoes a slight deformation and squeezes the first spring 54, thereby automatically filling the step gap, ensuring the annular continuity of the punch cutting edge, avoiding burrs or tears in the workpiece cut due to the step during scraping, and thus improving the stamping accuracy. Example 2: From Figure 1-8 As can be seen, the positioning mechanism 6 includes a positioning rod 61, a first positioning element 62, a loading groove 63, and a second positioning element 64. The positioning rod 61 is located above the fixed plate 43 and is rotatably connected to the top of the first fixed seat 13 via a sealed bearing. The first positioning element 62 is located above the fixed plate 43 and is fixedly connected to the inner wall of the positioning rod 61. The loading groove 63 is located at the top of the fixed plate 43. The second positioning element 64 is fixedly connected to the inner wall of the loading groove 63, and its top is attached to the bottom of the first positioning element 62. The cooperation of the positioning rod 61, the first positioning element 62, the loading groove 63, and the second positioning element 64 ensures the installation stability of the punch insert 2. In the specific implementation process, it is worth noting that four positioning rods 61 are provided. Each rod consists of a cylinder with a threaded hole at the top, a bolt, and a strip-shaped plate structure. The cylinder with the threaded hole at the top is rotatably connected to the top of the first fixed seat 13 via a sealed bearing. The strip-shaped plate structure is fixedly connected to the top of the cylinder via bolts. A circular through hole is machined on the side of the top of the strip-shaped plate structure away from the bolt. The inner wall of the through hole is fixedly connected to a first positioning element 62. The number of first positioning elements 62 is the same as that of positioning rods 61. Their material can be neodymium iron boron permanent magnets. Four loading slots 63 are provided and opened on the top of the fixed plate 43. They are circular in shape and their positions correspond one-to-one with the bottom of the first positioning elements 62. The shape and number of second positioning elements 64 are the same as those of the loading slots 63. Their material is the same as that of the first positioning elements 62. Similar to component 62, in actual use, the operator moves the fixing ring 44 at the bottom of the fixing plate 43 into the mounting groove 131 using the servo motor 41. Then, the four second positioning components 64 at the top of the fixing plate 43 correspond one-to-one with the four first positioning components 62. The sealed bearing at the bottom of the positioning rod 61 can only rotate the positioning rod 61 by 45 degrees, so that the ends of the two positioning rods 61 located at opposite positions are in a straight line. That is, when needed, the positioning rod 61 can be rotated to the top of the fixing plate 43 for positioning, and when not needed, the positioning rod 61 can be returned to its original position. If necessary, auxiliary detection elements (such as A3144 Hall sensor) can be added to monitor the accuracy of the positioning rod 61 through an external PLC. Therefore, through the cooperation of the above structures, the fixing effect of the fixing plate 43 is ensured. Furthermore, a clamping unit 7 is provided below the first fixed seat 13. The clamping unit 7 includes a clamping plate 71, a limiting rod 72, and a second spring 73. The clamping plate 71 is located below the first fixed seat 13, and its inner wall is sleeved on the outer wall of the punch insert 2. Four limiting rods 72 are provided, which are respectively fixedly connected to the top four corners of the clamping plate 71, and their ends pass through the bottom four corners of the first fixed seat 13 and extend to the top of the first fixed seat 13. Four second springs 73 are provided, all of which are located between the first fixed seat 13 and the clamping plate 71, and are respectively sleeved on the outer wall of the four limiting rods 72. The workpiece to be processed is clamped and fixed by the cooperation of the clamping plate 71, the limiting rods 72, and the second springs 73. In the specific implementation process, it is worth noting that the clamping plate 71 is a square plate with a circular through hole in its center, the diameter of which is larger than the outer diameter of the annular punch insert 2. There are four limiting rods 72 with a 'T'-shaped cross section, which can be movably connected to the circular through holes machined at the four corners of the top of the first fixed seat 13. There are four second springs 73, which can be made of spring steel. The specific elastic coefficient can be selected according to the actual working needs, as long as it meets the clamping and fixing effect on the workpiece. In the actual working process, the clamping plate 71 moves with the first fixed seat 13. The bottom of the clamping plate 71 will contact the workpiece to be processed first. As the first fixed seat 13 descends, it compresses the second springs 73. The second springs 73 transmit the pressure they receive to the clamping plate 71, thereby clamping and fixing the workpiece with the clamping plate 71, ensuring the stability of the workpiece during stamping and scraping, and thus improving the processing accuracy of the segmented insert stamping and scraping die. Furthermore, a second fixed seat 14 is fixedly connected to the bottom of the die insert 3, and a support frame 15 is fixedly connected to both sides of the outer wall of the second fixed seat 14. The ends of the two support frames 15 are respectively fixedly connected to both sides of the outer wall of the top plate 1. In the specific implementation process, it is worth noting that the second fixed seat 14 is a quadrangular prism with support feet fixedly connected to the four corners of its bottom and threaded holes opened at the four corners of its top to facilitate fixing to the die insert 3. 'C'-shaped support frames 15 are fixedly connected to both sides of its outer wall, and are fixedly connected to the top plate 1 through the support frames 15, thereby providing support to the top plate 1 and ensuring the structural stability of the segmented insert stamping and scraping die and its process. Furthermore, a limiting groove 451 is formed on the top of the fixing piece 45, and a limiting block 452 is fixedly connected to the side of the top of the fixing piece 45 away from the limiting groove 451. In the specific implementation process, it is worth noting that a circular limiting groove 451 is provided on the top of a fixing piece 45, and a cylindrical limiting block 452 is fixed on the other side of its top. During production, the limiting groove 451 and the limiting block 452 are formed with the fixing piece 45 in one step by a mold. During actual installation, multiple fixing pieces 45 can be connected end to end to form a circle, thereby improving the overall connection stability of the punch insert 2.

[0024] Working principle: When processing is required, the operator places the workpiece on top of the die insert 3, connects the power supply to the external hydraulic pump via an external controller, and starts the hydraulic cylinder 11 via the hydraulic pump. The hydraulic cylinder 11 drives the connecting frame 12 to move, the connecting frame 12 drives the first fixed seat 13 to move, and the first fixed seat 13 drives the punch insert 2 to move via the fixing mechanism 4. The punch insert 2 performs punching and scraping operations on the workpiece. After processing, all structures return to their initial positions, and then the operator can remove the workpiece. When it is necessary to install or replace the punch insert 2, the operator connects the external power supply to the servo motor 41 via an external controller and starts the servo motor 41. The output end of the servo motor 41 drives the transmission shaft 42 to rotate synchronously. Because the fixed plate 43 is connected to the external power supply, the servo motor 41 rotates synchronously. The drive shaft 42 is connected to the external thread of the central threaded hole, and the rectangular groove on the outer wall of the fixing plate 43 slides with the convex vertical plate of the connecting bracket 12. Therefore, the drive shaft 42 drives the fixing plate 43 to move vertically, the fixing plate 43 rises, and the fixing plate 43 drives the fixing ring 44 to rise. The bottom of the fixing ring 44 leaves the fixing plate 45. At this time, the servo motor 41 is stopped, and the section of punch insert 2 that needs to be replaced is taken out and replaced with a new punch insert 2. Then, the servo motor 41 is restarted. The servo motor 41 drives the fixing plate 43 to descend through the drive shaft 42. The fixing plate 43 drives the fixing ring 44 to press against the fixing plate 45 again, thereby fixing the punch insert 2. Therefore, compared with the traditional fastening method, the time required for the segmented punch insert is greatly shortened. The reduced replacement time of block 2 not only improves mold maintenance efficiency but also saves mold maintenance costs. In actual operation, workers connect multiple punch inserts 2 end to end. The connecting post 52 on the side wall of the rear punch insert 2 is inserted into the connecting groove 51 on the side wall of the front punch insert 2. The outer wall of the connecting post 52 of the rear punch insert 2 will fit tightly with the compensation block 55 in the connecting groove 51 of the front punch insert 2. In the non-working state, the first spring 54 in the blind hole 53 is in a pre-compressed state, pushing the compensation block 55 to always press the surface of the connecting post 52. With the cooperation of the compensation block 55, the connecting groove 51, and the connecting post 52, the initial fitting accuracy of the splicing surface is ensured. When the mold is scraping, the punch insert 2 is subjected to radial scraping force. If the adjacent punches If the insert 2 forms a step due to installation deviation or deformation under force, the connecting column 52 will exert pressure on the compensation block 55, causing the compensation block 55 to undergo slight deformation. At the same time, it will compress the first spring 54, thereby automatically filling the step gap, ensuring the annular continuity of the punch cutting edge, avoiding burrs or tears on the workpiece cut due to the step during scraping, and thus improving stamping accuracy. In actual use, after the operator moves the fixing ring 44 at the bottom of the fixing plate 43 into the mounting groove 131 using the servo motor 41, the four second positioning parts 64 at the top of the fixing plate 43 correspond one-to-one with the four first positioning parts 62. Among them, the sealed bearing at the bottom of the positioning rod 61 can only rotate the positioning rod 61 by 45 degrees, so that the ends of the two positioning rods 61 located at diagonal positions are aligned in a straight line.When needed, the positioning rod 61 can be rotated to the top of the fixed plate 43 for positioning; when not needed, the positioning rod 61 can be returned to its original position. During actual operation, the clamping plate 71 moves with the first fixed seat 13, and the bottom of the clamping plate 71 contacts the workpiece first. As the first fixed seat 13 descends, it compresses the second spring 73, which transmits the pressure to the clamping plate 71, thus clamping and fixing the workpiece to itself, ensuring the stability of the workpiece during stamping and scraping.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A segmented insert stamping and scraping die, comprising a top plate (1), characterized in that: A hydraulic cylinder (11) is fixedly connected to the bottom of the top plate (1). A connecting frame (12) is fixedly connected to the output end of the hydraulic cylinder (11). A first fixed seat (13) is fixedly connected to the bottom of the connecting frame (12). An installation groove (131) is opened on the surface of the first fixed seat (13). A punch insert (2) is inserted into the inner wall of the installation groove (131). A die insert (3) is provided below the punch insert (2). The segmented insert stamping and scraping die also includes: a fixing mechanism (4) located above the punch insert (2); a compensation mechanism (5) located inside the punch insert (2); and a positioning mechanism (6) located on the side of the fixing mechanism (4). The punch insert (2) is quickly fixed by the fixing mechanism (4), the punch insert (2) is adaptively spliced ​​and compensated by the compensation mechanism (5), and the installation stability of the punch insert (2) is ensured by the positioning mechanism (6).

2. The segmented insert stamping and scraping die according to claim 1, characterized in that: The fixing mechanism (4) includes: a servo motor (41), fixedly connected to the top of the top plate (1), and its output end extends to the bottom of the top plate (1) through a sealed bearing; a transmission shaft (42), fixedly connected to the output end of the servo motor (41), and its outer wall is movable within the inner wall of the connecting frame (12), and is rotatably connected to the top of the first fixed seat (13) through a sealed bearing; a fixing plate (43), threadedly connected to the outer wall of the transmission shaft (42), and its outer wall is slidably connected to the side wall of the connecting frame (12); a fixing ring (44), fixedly connected to the bottom of the fixing plate (43), and its outer wall is attached to the inner wall of the mounting groove (131); and a fixing piece (45), attached to the bottom of the fixing ring (44) and the inner wall of the mounting groove (131), and fixedly connected to the top of the punch insert (2); The punch insert (2) is quickly fixed by the cooperation of the servo motor (41), transmission shaft (42), fixing plate (43), fixing ring (44) and fixing piece (45).

3. The segmented insert stamping and scraping die according to claim 2, characterized in that: The compensation mechanism (5) includes: a connecting groove (51) formed on the outer wall of the punch insert (2); a connecting post (52) machined on the side of the outer wall of the punch insert (2) away from the connecting groove (51); a blind hole (53) formed at the bottom of the inner wall of the connecting groove (51); a first spring (54) fixedly connected to the bottom of the inner wall of the blind hole (53); and a compensation block (55) inserted into the inner wall of the connecting groove (51) and fixedly connected to the end of the first spring (54). The punch insert (2) is adaptively spliced ​​and compensated by the cooperation of the connecting groove (51), connecting post (52), blind hole (53), first spring (54) and compensation block (55).

4. The segmented insert stamping and scraping die according to claim 3, characterized in that: The positioning mechanism (6) includes: a positioning rod (61) disposed above the fixed plate (43) and rotatably connected to the top of the first fixed seat (13) via a sealed bearing; a first positioning member (62) disposed above the fixed plate (43) and fixedly connected to the inner wall of the positioning rod (61); a loading groove (63) opened at the top of the fixed plate (43); and a second positioning member (64) fixedly connected to the inner wall of the loading groove (63) and with its top abutting against the bottom of the first positioning member (62). The installation stability of the punch insert (2) is ensured by the cooperation of the positioning rod (61), the first positioning element (62), the loading groove (63), and the second positioning element (64).

5. A segmented insert stamping and scraping die according to claim 4, characterized in that: A clamping unit (7) is provided below the first fixed seat (13). The clamping unit (7) includes: a clamping plate (71), which is located below the first fixed seat (13) and whose inner wall is sleeved on the outer wall of the punch insert (2); four limiting rods (72), which are respectively fixedly connected to the top four corners of the clamping plate (71) and whose ends pass through the bottom four corners of the first fixed seat (13) and extend to the top of the first fixed seat (13); and four second springs (73), which are all located between the first fixed seat (13) and the clamping plate (71) and are respectively sleeved on the outer wall of the four limiting rods (72). The workpiece is clamped and fixed by the cooperation of the clamping plate (71), the limiting rod (72), and the second spring (73).

6. A segmented insert stamping and scraping die according to claim 5, characterized in that: The bottom of the concave mold insert (3) is fixedly connected to a second fixed seat (14), and the outer walls of the second fixed seat (14) are fixedly connected to support frames (15). The ends of the two support frames (15) are respectively fixedly connected to the outer walls of the top plate (1).

7. A segmented insert stamping and scraping die according to claim 6, characterized in that: A limiting groove (451) is provided on the top of the fixing piece (45), and a limiting block (452) is fixedly connected to the side of the top of the fixing piece (45) away from the limiting groove (451).

8. A segmented insert stamping and scraping process, applied in a segmented insert stamping and scraping die as described in claim 7, characterized in that, Includes the following steps: S1. Start the servo motor (41). The output end of the servo motor (41) drives the transmission shaft (42) to rotate synchronously. The transmission shaft (42) drives the fixed plate (43) to move in the vertical direction. The fixed plate (43) drives the fixed ring (44) to rise. The bottom of the fixed ring (44) leaves the fixed plate (45). S2. Stop the servo motor (41), remove the part of the punch insert (2) that needs to be replaced, and replace it with a new punch insert (2). Start the servo motor (41) again. The servo motor (41) drives the fixing plate (43) to descend through the transmission shaft (42). The fixing plate (43) drives the fixing ring (44) to press against the fixing piece (45) again, thereby fixing the punch insert (2). S3. Connect the multiple punch inserts (2) end to end in sequence, then the connecting post (52) on the side wall of the rear punch insert (2) is inserted into the connecting groove (51) on the side wall of the front punch insert (2), and the outer wall of the connecting post (52) of the rear punch insert (2) will fit tightly with the compensation block (55) in the connecting groove (51) of the front punch insert (2); S4. Place the workpiece on top of the die insert (3), start the hydraulic cylinder (11), the hydraulic cylinder (11) drives the connecting frame (12) to move, the connecting frame (12) drives the first fixed seat (13) to move, the abutment plate (71) follows the first fixed seat (13) to move, the bottom of the abutment plate (71) will contact the workpiece to be processed first, as the first fixed seat (13) descends, compressing the second spring (73), the second spring (73) transmits the pressure received to the abutment plate (71), so that the abutment plate (71) abuts and fixes the workpiece; S5. The first fixed seat (13) drives the punch insert (2) to move and scrape through the fixing mechanism (4); S6. The punch insert (2) is subjected to radial scraping force. If the adjacent punch insert (2) produces a splicing step due to installation deviation or force deformation, the connecting column (52) will exert pressure on the compensation block (55). The compensation block (55) will undergo slight deformation and squeeze the first spring (54) at the same time, thereby automatically filling the step gap, ensuring the annular continuity of the punch cutting edge, and avoiding burrs or tears in the workpiece cut due to the step during scraping.

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