A rotary stamping die and stamping method for cylindrical parts

Abstract

The present invention belongs to the technical field of mold equipment, and discloses a rotary stamping mold and a stamping method for cylindrical parts. The device includes a stamping bed, a cavity, a punching mold and two extrusion plates, and also includes: a support component, including a conical block, and the outer wall of the conical block abuts against a plurality of lower mold blocks; a moving component, including a support frame and a sixth round rod, a third slider is slidably installed on the upper end surface of the support frame, and a fifth round rod is symmetrically rotated and installed on the outer wall of the third slider, one side of the sixth round rod passes through the support frame and is fixedly connected to the first round rod, and a fourth slider is rotatably installed on the other side of the sixth round rod, and a limited block is installed on the lower end surface of the fourth slider, and a fourth spring is symmetrically installed between the fourth slider and the third slider; a rotating component; a protective component, including a round pin, and a stopper is installed on the outer wall of the round pin. The present invention solves the problem that the inside of the cylindrical part cannot be supported, causing deformation or deflation during stamping, and the problem that cylindrical parts of different diameters cannot be supported.

Description

Technical Field

[0001] The invention relates to the technical field of mold equipment, in particular to a rotary stamping mold for a cylindrical part and a stamping method. Background Art

[0002] Stamping dies are special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) during cold stamping. They are called cold stamping dies (commonly known as cold stamping dies). 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. When punching holes on the surface of a round tube, the tube needs to be rotated to ensure that the outer surface is evenly covered with holes.

[0003] The Chinese patent disclosed "A round tube rotary punching device" with application number 202320491013.8. A slide groove is opened on the operating table of the punching machine body, and the clamping mechanism is arranged in the slide groove. The end plates are fixedly installed at both ends of the slide groove, and the two ends of the bidirectional screw pass through the end plates and are rotatably connected with the two end plates. Two movable sliders are symmetrically slidably installed in the slide groove and are respectively threadedly connected with the threaded sections on both sides of the bidirectional screw. The clamping plate is fixedly installed on the corresponding movable slider and is located on the outside of the slide groove. A servo motor is fixedly installed on the outside of one of the clamping plates, and auxiliary mechanisms are arranged on the opposite sides of the two clamping plates.

[0004] When punching a round tube, the device only clamps the two sides. When the punching die descends to punch a hole, since there is no support inside the round tube, when the outer wall of the round tube is thin, the huge impact force will cause the outer wall of the round tube to deform or deflate, causing the round tube to be scrapped. In addition, the device cannot support round tubes of different diameters and has great limitations. Therefore, a stamping die is needed that can support round tubes of different diameters and prevent the round tubes from deforming or deflation during stamping. Summary of the invention

[0005] The purpose of the present invention is to provide a rotary stamping die and stamping method for cylindrical parts. The present invention solves the problem that the inside of the cylindrical parts cannot be supported, causing deformation or deflation during stamping and the problem that cylindrical parts of different diameters cannot be supported.

[0006] To achieve the above object, the present invention provides the following technical solution: a rotary stamping die for cylindrical parts, comprising a stamping bed, a cavity is opened in the middle of the stamping bed, a punching die and two extrusion plates are installed inside the cavity, and a second support plate, a fourth support plate and a third support plate are installed on the upper end surface of the cavity in sequence, and further comprising:

[0007] The supporting assembly comprises a moving assembly and a first round rod, a conical block is installed on one side of the first round rod, and the outer wall of the conical block abuts against a plurality of lower mold blocks. When the extrusion plate descends, the moving assembly is extruded, and the moving assembly drives the conical block to extrude the lower mold block through the first round rod, thereby completing the support of cylindrical parts with different diameters, and the lower mold block abuts against the inner wall of the cylindrical part;

[0008] The moving assembly includes a support frame and a sixth round rod, a third slider is slidably mounted on the upper end surface of the support frame, a fifth round rod is symmetrically rotatably mounted on the outer wall of the third round rod, one side of the sixth round rod passes through the support frame and is fixedly connected to the first round rod, a fourth slider is rotatably mounted on the other side of the sixth round rod, a limited block is mounted on the lower end surface of the fourth slider, and a fourth spring is symmetrically mounted between the fourth slider and the third slider;

[0009] The rotating assembly comprises a second pawl, one side of the second pawl is meshed with a ratchet wheel, and the second pawl drives the supporting assembly to rotate through the ratchet wheel;

[0010] The protection component includes a slide plate slidably installed inside the support frame, the outer wall of the slide plate is provided with a plurality of fourth slide grooves, the inner wall of the fourth slide groove is slidably provided with a round pin, the outer wall of the round pin is provided with a stopper, when the cylindrical part is rotated and punched, the stopper rises and abuts against the limit block.

[0011] Preferably, the support assembly also includes a ring, which is sleeved on the outer wall of the first round rod, and one side of the ring passes through the second support plate and is fixedly connected to a disc, and a plurality of first sliding grooves are evenly opened on the outer wall of the disc, and a first slider is slidably installed on the inner wall of the first sliding groove, and the first slider is fixedly connected to the lower mold block on the side away from the disc, and a first spring is installed on the side of the first slider away from the first round rod, and the first spring is installed on the first sliding groove on the side away from the first slider.

[0012] Preferably, the outer wall of the lower mold block is provided with a plurality of through holes, the through holes are trumpet-shaped on the side facing the first round rod, and the outer wall of the lower mold block is provided with an inclined groove connected with the through holes.

[0013] Preferably, the rotating assembly also includes a second round rod and a connecting rod, a second slider is installed on the lower end surface of the second round rod, the second slider is slidably installed on the second support plate through a third slide groove provided in the outer wall of the second support plate, a third spring is installed on the lower end surface of the second slider, the third spring is installed on the cavity away from the second slider, a second slide groove is provided on the outer wall of the connecting rod, a third round rod is slidably installed on the inner wall of the second slide groove, and one side of the third round rod is rotatably installed on the second slider.

[0014] Preferably, a first pawl is meshed on one side of the ratchet, and one side of the first pawl is rotatably mounted on the second support plate. A second spring is installed on the side of the first pawl away from the ratchet, and a fixed block is installed on the side of the second spring away from the first pawl. The fixed block is installed on the second support plate, and a protrusion is installed on the side of the ratchet away from the second support plate.

[0015] Preferably, a baffle is installed on one side of the skateboard that passes through the third support plate, a fifth spring is symmetrically installed on the outer wall of the baffle, the fifth spring is installed on the third support plate away from the baffle, a fourth round rod is installed on the side of the skateboard away from the baffle, and a ball is rotatably installed on the fourth round rod that passes through the fourth support plate.

[0016] Preferably, a control panel is installed on the outer wall of the punching bed, a first support plate is installed on the upper end surface of the punching die, a plurality of hydraulic rods are installed on the upper end surface of the first support plate, the hydraulic rods are installed on the cavity, a positioning sleeve is symmetrically installed on the lower end surface of the first support plate, and a positioning rod is installed on the upper end surface of the cavity corresponding to the positioning sleeve.

[0017] Preferably, the support frame is installed on the outer wall of the third support plate.

[0018] Preferably, the cylindrical part rotary stamping method comprises the following steps:

[0019] Step 1: After the cylindrical part to be processed is sleeved on the lower die block, the punching die and the extrusion plate at the initial height are lowered to the processing height, the extrusion plate extrudes the fifth round rod, the fifth round rod drives the fourth spring to extrude the fourth slider through the third slider, the fourth slider drives the limit block and the sixth round rod to move, the sixth round rod drives the conical block to move through the first round rod, at this time the conical block extrudes the lower die block, so that the lower die block abuts against the inner wall of the cylindrical part, supporting and fixing it;

[0020] Step 2: When the punching die descends, it squeezes the second pawl, and the second pawl rotates on the outer wall of the ratchet wheel. At the same time, the punching die punches holes on the surface of the cylindrical part;

[0021] Step 3: When the punching die and the extrusion plate rise, this is the processing height. The punching die and the extrusion plate, the rising height becomes lower, the extrusion plate is always in contact with the fifth round rod, and the squeezed second pawl is engaged with the ratchet and drives the ratchet to rotate. The ratchet drives the cylindrical part to rotate intermittently through the support assembly. At the same time, the block in the protection assembly rises and abuts against the limit block to prevent the fourth slider from sliding and causing the cylindrical part to fall.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention provides a support assembly, and the fourth slider drives the conical block to squeeze the lower mold block through the sixth round rod and the first round rod. The lower mold block drives the first slider to slide outward in the first slide groove and squeeze the first spring. After the outer wall of the lower mold block abuts against the round tube, the conical block no longer moves, so that round tubes of different diameters can be supported and fixed, ensuring that the round tubes are not squeezed, deformed or deflated during stamping.

[0024] The present invention sets a protection component, the ratchet drives the protrusion to rotate, and the protrusion no longer squeezes the ball. At this time, the fifth spring contracts, driving the baffle to move to one side of the support frame, the baffle drives the slide plate to move, the slide plate drives the round pin to rise through the fourth slide groove, the round pin drives the stopper to rise, and the stopper will block the limit block. When the machine fails, it can ensure that the lower mold block is always in contact with the inner wall of the round tube to prevent the round tube from being squeezed, deformed or deflated. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the interior of the cavity of the present invention;

[0027] Figure 3 for Figure 2 Schematic diagram from another perspective;

[0028] Figure 4 It is a schematic diagram of the support assembly of the present invention;

[0029] Figure 5 for Figure 4 Sectional view;

[0030] Figure 6 It is a schematic diagram of the rotating assembly of the present invention;

[0031] Figure 7 for Figure 6 Remove the ratchet diagram;

[0032] Figure 8 It is a schematic diagram of the protection component of the present invention;

[0033] Fig. 9 for Figure 8 Half-section diagram;

[0034] Fig.10 for Fig. 9 A magnified schematic diagram of center A.

[0035] In the figure: 1, punching bed; 2, cavity; 3, control panel; 4, hydraulic rod; 5, first support plate; 6, positioning rod; 7, positioning sleeve; 8, punching die; 9, second support plate; 10, third support plate; 11, fourth support plate; 12, extrusion plate; 13, discharge port; 100, support assembly; 200, rotating assembly; 300, protection assembly; 101, lower die block; 102, conical block; 103, inclined groove; 104, first slide groove; 105, disc; 106, first spring; 107, through hole; 108, ring; 109, first round rod; 110, first slider; 201, first pawl; 202, fixed block; 203, second spring; 204, ratchet; 205, bump; 206, second round rod; 207, second slider; 208, third round rod; 209, second slide; 210, second ratchet; 211, third slide; 212, third spring; 213, connecting rod; 301, ball; 302, fourth round rod; 303, third slider; 304, support frame; 305, fifth round rod; 306, fourth spring; 307, fourth slider; 308, baffle; 309, fifth spring; 310, sixth round rod; 311, slide; 312, limit block; 313, round pin; 314, block; 315, fourth slide. DETAILED DESCRIPTION

[0036] See also Figures 1 to 10 The present invention provides a technical solution: a rotary stamping die for cylindrical parts, comprising a stamping bed 1, a cavity 2 is provided in the middle of the stamping bed 1, a punching die 8 and two extrusion plates 12 are installed inside the cavity 2, and a second support plate 9, a fourth support plate 11 and a third support plate 10 are installed on the upper end surface of the cavity 2 in sequence, and further comprising:

[0037] The support assembly 100 includes a moving assembly and a first round rod 109. A conical block 102 is installed on one side of the first round rod 109. The outer wall of the conical block 102 abuts against a plurality of lower mold blocks 101. When the extrusion plate 12 descends, the moving assembly is squeezed. The moving assembly drives the conical block 102 to squeeze the lower mold block 101 through the first round rod 109, thereby completing the support of cylindrical parts with different diameters. The lower mold block 101 abuts against the inner wall of the cylindrical part.

[0038] The moving assembly includes a support frame 304 and a sixth round rod 310, a third slider 303 is slidably mounted on the upper end surface of the support frame 304, a fifth round rod 305 is symmetrically rotatably mounted on the outer wall of the third slider 303, one side of the sixth round rod 310 passes through the support frame 304 and is fixedly connected to the first round rod 109, a fourth slider 307 is rotatably mounted on the other side of the sixth round rod 310, a limit block 312 is mounted on the lower end surface of the fourth slider 307, and a fourth spring 306 is symmetrically mounted between the fourth slider 307 and the third slider 303;

[0039] The rotating assembly 200 includes a second pawl 210 , one side of which is meshed with a ratchet 204 , and the second pawl 210 drives the supporting assembly 100 to rotate through the ratchet 204 ;

[0040] The protection assembly 300 includes a slide plate 311 slidably mounted inside the support frame 304, the outer wall of the slide plate 311 is provided with a plurality of fourth slide grooves 315, the inner wall of the fourth slide groove 315 is slidably mounted with a round pin 313, the outer wall of the round pin 313 is mounted with a stopper 314, when the cylindrical part is rotated and punched, the stopper 314 rises and abuts against the limit block 312;

[0041] Further, such as Figure 4 , Figure 5 As shown, the support assembly 100 also includes a ring 108, which is sleeved on the outer wall of the first round rod 109, and one side of the ring 108 penetrates the second support plate 9 and is fixedly connected to a disc 105, and the outer wall of the disc 105 is evenly provided with a plurality of first slide grooves 104, and the inner wall of the first slide groove 104 is slidably installed with a first slider 110, and the first slider 110 is fixedly connected to the lower mold block 101 on the side away from the disk 105, and the first slider 110 is installed on the side away from the first round rod 109. The first spring 106 is installed on the first slide groove 104 on the side away from the first slider 110, and the lower mold block 101 is provided with a plurality of through holes 107 on the outer wall, and the through holes 107 are horn-shaped toward the side of the first round rod 109, and the outer wall of the lower mold block 101 is provided with an inclined groove 103 connected with the through hole 107, and the outer wall of the first round rod 109 is sleeved on the fourth support plate 11;

[0042] The first round rod 109 drives the conical block 102 to move and squeeze the lower mold block 101. The lower mold block 101 drives the first slider 110 to slide outward in the first slide groove 104 and squeeze the first spring 106. When the outer wall of the lower mold block 101 abuts against the round tube, the conical block 102 no longer moves, and the round tube is supported and fixed. The waste material punched out of the round tube is discharged to the chute 103 through the trumpet-shaped through hole 107.

[0043] Further, such as Figure 6 , Figure 7As shown, the rotating assembly 200 also includes a second round rod 206 and a connecting rod 213, the second round rod 206 is installed with a second slider 207 at the lower end surface, the second slider 207 is slidably installed on the second support plate 9 through a third slide groove 211 provided on the outer wall of the second support plate 9, the second slider 207 is installed with a third spring 212 at the lower end surface, the third spring 212 is installed on the cavity 2 away from the second slider 207, the outer wall of the connecting rod 213 is provided with a second slide groove 209, the inner wall of the second slide groove 209 is slidably installed with a third round rod 208, one side of the third round rod 208 is rotatably installed on the second slider 207, the connecting rod 213 is rotatably connected to the ring 108, the second pawl 210 is rotatably installed on the outer wall of the connecting rod 213, and a torsion spring is provided at the connection;

[0044] The second round rod 206 drives the second slider 207 downward to descend in the third slide groove 211, and the second slider 207 drives the third round rod 208 to slide downward in the second slide groove 209 on the connecting rod 213 and compresses the third spring 212. At this time, the connecting rod 213 rotates with the circular ring 108 as the center, and the connecting rod 213 drives the second pawl 210 to rotate on the outer wall of the ratchet 204. When the third spring 212 is extended, the second slider 207 is pushed up, and the second slider 207 drives the connecting rod 213 to rotate in the opposite direction with the circular ring 108 as the center through the third round rod 208. The connecting rod 213 drives the ratchet 204 to rotate through the second pawl 210, and the ratchet 204 drives the circular ring 108 to rotate. The circular ring 108 drives the circular tube on the lower mold block 101 to rotate intermittently through the circular disc 105, thereby completing the circular tube face change;

[0045] Further, such as Figure 6 As shown, the ratchet 204 is meshed with a first pawl 201 on one side, and the first pawl 201 is rotatably mounted on the second support plate 9 on one side, and a second spring 203 is mounted on the first pawl 201 away from the ratchet 204 on one side, and a fixing block 202 is mounted on the second support plate 9 on the second spring 203 away from the first pawl 201 on one side, and the fixing block 202 is mounted on the second support plate 9, and a protrusion 205 is mounted on the ratchet 204 away from the second support plate 9, and the ratchet 204 is fixedly connected to the ring 108;

[0046] When the ratchet 204 rotates, the second spring 203 is squeezed by the first pawl 201. When the ratchet 204 stops, the second spring 203 is extended, so that the first pawl 201 is engaged with the ratchet 204 to prevent the ratchet 204 from rotating.

[0047] Further, such as Figures 8 to 10As shown, a baffle 308 is installed on one side of the slide plate 311 penetrating the third support plate 10, a fifth spring 309 is symmetrically installed on the outer wall of the baffle 308, and the fifth spring 309 is installed on the third support plate 10 away from the baffle 308. A fourth round rod 302 is installed on the side of the slide plate 311 away from the baffle 308, and the fourth round rod 302 penetrates the fourth support plate 11 and is rotatably installed with a ball 301;

[0048] When the protrusion 205 squeezes the ball 301, the ball 301 drives the slide plate 311 to move toward the side of the baffle 308 through the fourth round rod 302, the baffle 308 stretches the fifth spring 309, and the slide plate 311 drives the block 314 to descend through the fourth slide groove 315, and no longer blocks the limit block 312;

[0049] When the protrusion 205 does not squeeze the ball 301, the fifth spring 309 contracts, driving the baffle 308 to move toward the side of the support frame 304, the baffle 308 drives the slide plate 311 to move, the slide plate 311 drives the round pin 313 to rise through the fourth slide groove 315, the round pin 313 drives the stopper 314 to rise, and the stopper 314 blocks the limit block 312;

[0050] Further, such as Figure 1 As shown, a control panel 3 is installed on the outer wall of the punching bed 1, a first support plate 5 is installed on the upper end surface of the punching die 8, a plurality of hydraulic rods 4 are installed on the upper end surface of the first support plate 5, and the hydraulic rods 4 are installed on the cavity 2, a positioning sleeve 7 is symmetrically installed on the lower end surface of the first support plate 5, a positioning rod 6 is installed on the upper end surface of the cavity 2 corresponding to the positioning sleeve 7, and a discharge port 13 is opened on the upper end surface of the cavity 2;

[0051] The hydraulic rod 4 drives the first support plate 5 to move up and down, and the positioning sleeve 7 cooperates with the positioning rod 6 to prevent the punching die 8 from shifting, and the discharge port 13 is convenient for collecting waste.

[0052] In this embodiment, the cylindrical part rotary stamping method comprises the following steps:

[0053] Step 1: After the external power supply is connected, the round tube is set on the lower mold block 101, and then the hydraulic rod 4 is lowered through the control panel 3. The hydraulic rod 4 drives the punching mold 8, the positioning sleeve 7 and the extrusion plate 12 to descend from the initial height through the first support plate 5. The positioning sleeve 7 is combined with the positioning rod 6 to prevent deviation. The extrusion plate 12 is inclined to squeeze the fifth round rod 305, and the fifth round rod 305 drives the third slider 303 to move to the side of the fourth slider 307. The third slider 303 squeezes the fourth spring 306, and the fourth spring 306 squeezes the fourth slider 307. The fourth slider 307 drives the limit block 312 to move, and the fourth slider 307 drives the conical block 102 to squeeze the lower mold block 101 through the sixth round rod 310 and the first round rod 109. The lower mold block 101 drives the first slider 110 to slide outward in the first slide groove 104 and squeeze the first spring 106. After the outer wall of the lower mold block 101 abuts against the round tube, the conical block 102 no longer moves to complete the support and fixation of the round tube. At this time, the movement of the third slider 303 will squeeze the fourth spring 306 until the inclined surface of the extrusion plate 12 becomes a straight surface. In this process, the fourth slider 307 no longer moves, which can prevent the conical block 102 from continuously squeezing the lower mold block 101 and causing damage to the round tube.

[0054] Step 2: When the first support plate 5 descends, the second round rod 206 is squeezed, and the second round rod 206 drives the second slider 207 downward to descend in the third slide groove 211, and the second slider 207 drives the third round rod 208 to slide downward in the second slide groove 209 on the connecting rod 213, and compresses the third spring 212. At this time, the connecting rod 213 rotates with the ring 108 as the center of the circle, and the connecting rod 213 drives the second pawl 210 to rotate on the outer wall of the ratchet 204. At the same time, the punching die 8 punches the outer wall of the round tube for the first time. At this time, the punched waste is discharged to the chute 103 through the trumpet-shaped through hole 107, and then falls at the discharge port 13;

[0055] Step 3: After the punching die 8 completes the punching, the hydraulic rod 4 rises. At this time, the hydraulic rod 4 rises to a working height (the working height is lower than the initial height), driving the first support plate 5 to rise. First, the first support plate 5 no longer squeezes the second round rod 206. At this time, the third spring 212 rises, pushing the second slider 207 to rise. The second slider 207 drives the connecting rod 213 to rotate in the opposite direction with the circular ring 108 as the center through the third circular rod 208. The connecting rod 213 drives the ratchet 204 to rotate through the second pawl 210. The ratchet 204 drives the circular ring 108 to rotate. The circular ring 108 drives the circular tube on the lower mold block 101 to rotate through the disc 105, thereby completing the face change.

[0056] At the same time, the ratchet 204 drives the protrusion 205 to rotate, and the protrusion 205 no longer squeezes the ball 301. At this time, the fifth spring 309 contracts, driving the baffle 308 to move toward the side of the support frame 304, and the baffle 308 drives the slide plate 311 to move. The slide plate 311 drives the round pin 313 to rise through the fourth slide groove 315, and the round pin 313 drives the stopper 314 to rise, and the stopper 314 will block the limit block 312.

[0057] As the first support plate 5 drives the extrusion plate 12 to rise, since the hydraulic rod 4 rises to the working height, the straight surface of the extrusion plate 12 will always abut against the fifth round rod 305, and since the limit block 312 is blocked by the stop block 314 at this time, when a fault occurs, even if the inclined surface of the extrusion plate 12 is away from the fifth round rod 305, the limit block 312 will not move during the punching process, which can ensure that the lower mold block 101 is always in contact with the inner wall of the round tube to prevent deformation or deflation;

[0058] After the last punching is completed, the hydraulic rod 4 rises to the initial height. At this time, the first support plate 5 and the extrusion plate 12 rise and no longer squeeze the second round rod 206. At this time, the ratchet 204 drives the protrusion 205 back to the initial position, and the protrusion 205 squeezes the ball 301. The ball 301 drives the slide plate 311 to move toward the side of the baffle 308 through the fourth round rod 302. The slide plate 311 drives the stopper 314 to descend through the fourth slide groove 315 and no longer blocks the limit block 312. The extrusion plate 12 is no longer in contact with the fifth round rod 305. At this time, the first spring 106 on the disc 105 contracts, and the extrusion conical block 102 moves to the side away from the disc 105. The round tube is no longer supported, which is convenient for taking.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary stamping die for cylindrical parts, comprising a stamping bed, a cavity is opened in the middle of the stamping bed, a punching die and two extrusion plates are installed inside the cavity, and a second support plate, a fourth support plate and a third support plate are installed in sequence on the upper end surface of the cavity, characterized in that: Also includes: The supporting assembly includes a moving assembly and a first round rod. A conical block is installed on one side of the first round rod. The outer wall of the conical block abuts against a plurality of lower mold blocks. When the extrusion plate descends, the moving assembly is extruded. The moving assembly drives the conical block to extrude the lower mold block through the first round rod, thereby completing the support of cylindrical parts with different diameters. The lower mold block abuts against the inner wall of the cylindrical part. The support assembly also includes a circular ring, which is sleeved on the outer wall of the first round rod, and one side of the circular ring penetrates the second support plate and is fixedly connected to a circular disc, and a plurality of first sliding grooves are evenly opened on the outer wall of the circular disc, and a first slider is slidably installed on the inner wall of the first sliding groove, and the side of the first slider away from the circular disc is fixedly connected to the lower mold block, and the side of the first slider away from the first round rod is installed with a first spring, and the side of the first spring away from the first slider is installed on the first sliding groove; The moving assembly includes a support frame and a sixth round rod, a third slider is slidably mounted on the upper end surface of the support frame, a fifth round rod is symmetrically rotatably mounted on the outer wall of the third round rod, one side of the sixth round rod passes through the support frame and is fixedly connected to the first round rod, a fourth slider is rotatably mounted on the other side of the sixth round rod, a limited position block is mounted on the lower end surface of the fourth slider, and a fourth spring is symmetrically mounted between the fourth slider and the third slider; The rotating assembly comprises a second pawl, one side of the second pawl is meshed with a ratchet wheel, and the second pawl drives the supporting assembly to rotate through the ratchet wheel; The protection component includes a slide plate slidably installed inside the support frame, a plurality of fourth slide grooves are opened on the outer wall of the slide plate, a round pin is slidably installed on the inner wall of the fourth slide groove, and a stopper is installed on the outer wall of the round pin. When the cylindrical part is rotated and punched, the stopper rises and abuts against the limit block.

2. A cylindrical part rotary stamping die according to claim 1, characterized in that: The outer wall of the lower mold block is provided with a plurality of through holes, the through holes are in a trumpet shape facing the first round rod, and the outer wall of the lower mold block is provided with an inclined groove connected with the through holes.

3. A cylindrical parts rotary stamping die according to claim 1, characterized in that: The rotating assembly also includes a second round rod and a connecting rod. A second slider is installed on the lower end surface of the second round rod. The second slider is slidably installed on the second support plate through a third slide groove opened on the outer wall of the second support plate. A third spring is installed on the lower end surface of the second slider. The third spring is installed on the cavity away from the second slider. A second slide groove is opened on the outer wall of the connecting rod. A third round rod is slidably installed on the inner wall of the second slide groove. One side of the third round rod is rotatably installed on the second slider.

4. A cylindrical part rotary stamping die according to claim 3, characterized in that: A first pawl is meshed with one side of the ratchet, and one side of the first pawl is rotatably mounted on the second support plate. A second spring is mounted on the side of the first pawl away from the ratchet, and a fixed block is mounted on the side of the second spring away from the first pawl. The fixed block is mounted on the second support plate, and a protrusion is mounted on the side of the ratchet away from the second support plate.

5. A cylindrical part rotary stamping die according to claim 1, characterized in that: A baffle is installed on one side of the slide plate through the third support plate, a fifth spring is symmetrically installed on the outer wall of the baffle, the fifth spring is installed on the third support plate away from the baffle, a fourth round rod is installed on the side of the slide plate away from the baffle, and the fourth round rod penetrates the fourth support plate and is rotatably installed with a ball.

6. A cylindrical part rotary stamping die according to claim 1, characterized in that: A control panel is installed on the outer wall of the punching bed, a first support plate is installed on the upper end surface of the punching die, a plurality of hydraulic rods are installed on the upper end surface of the first support plate, the hydraulic rods are installed on the cavity, a positioning sleeve is symmetrically installed on the lower end surface of the first support plate, and a positioning rod is installed on the upper end surface of the cavity corresponding to the positioning sleeve.

7. A cylindrical part rotary stamping die according to claim 1, characterized in that: The support frame is installed on the outer wall of the third support plate.

8. A method for rotary stamping of cylindrical parts, using a rotary stamping die for cylindrical parts according to claim 1, characterized in that: The following steps are involved: Step 1: After the cylindrical part to be processed is sleeved on the lower die block, the punching die and the extrusion plate at the initial height are lowered to the processing height, the extrusion plate extrudes the fifth round rod, the fifth round rod drives the fourth spring to extrude the fourth slider through the third slider, the fourth slider drives the limit block and the sixth round rod to move, the sixth round rod drives the conical block to move through the first round rod, at this time the conical block extrudes the lower die block, so that the lower die block abuts against the inner wall of the cylindrical part, supporting and fixing it; Step 2: When the punching die descends, it squeezes the second pawl, and the second pawl rotates on the outer wall of the ratchet wheel. At the same time, the punching die punches holes on the surface of the cylindrical part; Step 3: When the punching die and the extrusion plate rise, this is the processing height. The punching die and the extrusion plate, the rising height becomes lower, the extrusion plate is always in contact with the fifth round rod, and the squeezed second pawl is engaged with the ratchet and drives the ratchet to rotate. The ratchet drives the cylindrical part to rotate intermittently through the support assembly. At the same time, the block in the protection assembly rises and abuts against the limit block to prevent the fourth slider from sliding and causing the cylindrical part to fall.

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