An integrated die for tapping inside a workpiece stamping die

Abstract

The present invention relates to the technical field of stamping equipment, and in particular to an integrated tapping die for a workpiece stamping die. The present invention comprises a frame, a conveying track is provided in the frame, and a first switching mechanism, the first switching mechanism comprises a swinging rod, a swinging rod is symmetrically hinged in the frame, a first torsion spring is provided between the swinging rod and the frame, a movable rod is symmetrically slidably connected in the frame, a guide groove is provided at the top of the movable rod, a convex shaft is fixed to the bottom of the swinging rod, one end of the convex shaft is stuck in the guide groove and slides therein, a vertical rod is fixed to the top of the movable rod, and a special-shaped rack is provided in the frame. The present invention can quickly judge the size of the plate through the design of the first switching mechanism. When switching from a small-sized plate to a large-sized plate, the large-sized plate squeezes the outer walls of the two swinging rods, which can move the special-shaped rack forward, thereby changing the position of the first tap and the second tap, without the need to replace the mold, and effectively improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping equipment, in particular to a workpiece stamping die internal tapping integrated die. Background Art

[0002] An in-mold tapping machine is a machine tool specifically used for thread processing inside a workpiece. Its working principle is mainly to use a specific tool to cut threads in a pre-drilled hole to achieve the required thread specifications and greatly improve production efficiency. Especially in the case of mass production, its automation and continuous processing capabilities enable a significant increase in output per unit time.

[0003] The in-die tapping machine in the existing technology simply superimposes the stamping equipment and the tapping equipment on the hydraulic equipment to realize the stamping and tapping work. It is large in size and can only produce products of a single size during the processing. If products of other sizes need to be produced, other equipment needs to be used, or the mold of the in-die tapping machine needs to be replaced as a whole, which is time-consuming and labor-intensive. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an integrated die for tapping inside a workpiece stamping die.

[0005] The technical solution of the present invention is: a workpiece stamping die tapping integrated die, including a frame, a conveying track is provided in the frame, and also includes a first switching mechanism, the first switching mechanism includes a swing rod, the swing rod is symmetrically hinged in the frame, a first torsion spring is provided between the swing rod and the frame, a movable rod is symmetrically slidably connected in the frame, a guide groove is provided at the top of the movable rod, a convex shaft is fixed to the bottom of the swing rod, one end of the convex shaft is stuck in the guide groove and slides therein, a vertical rod is fixed to the top of the movable rod, and a special-shaped tooth is provided in the frame. The special-shaped racks are respectively hinged with connecting rods between the two vertical rods, and arc tracks are symmetrically fixed in the frame, a first special-shaped frame is slidably connected in one of the arc tracks, and a second special-shaped frame is slidably connected in the other arc track, the bottom of the first special-shaped frame and the top of the second special-shaped frame are both fixed with gears meshing with the special-shaped racks, a first tap and a second tap are provided on the lower sides of the first special-shaped frame and the second special-shaped frame, a first stamping block is fixedly connected to the bottom of the first tap, and a second stamping block is fixedly connected to the bottom end of the second tap.

[0006] Furthermore, it also includes a limiting mechanism, which includes a piston tube. The piston tube is fixedly connected to the bottom of the conveying track, and a piston rod is fixedly connected to one side of the movable rod. The piston rod is stuck in the piston tube and slides therein.

[0007] Furthermore, the limiting mechanism also includes a rotating plate, which is hinged in the conveying track, and a second torsion spring is arranged between the rotating plate and the conveying track. A sealing plug is fixed to one side of the rotating plate through a support rod, and a through hole is opened through the top of the piston tube, and the sealing plug is used in conjunction with the through hole.

[0008] Furthermore, it also includes a transmission mechanism, the transmission mechanism includes a first speed gear box, the first special-shaped frame and the second special-shaped frame are both fixedly connected with the first speed gear box and the second speed gear box in a through-type manner, the top ends of the first tap and the second tap are respectively connected to the output ends of the first speed gear box and the second speed gear box, the input ends of the first speed gear box and the second speed gear box are both connected to a screw rod, the outer wall of the screw rod is fixedly sleeved with a nut, and a first compression spring is respectively arranged between the nut and the first speed gear box and the second speed gear box, a lifting plate is provided in the frame, and arc grooves are symmetrically opened on the lifting plate, the nut is stuck in the arc groove and slides therein, and an arc bar used in conjunction with the nut is fixed in the arc groove.

[0009] Furthermore, it also includes a second switching mechanism, the second switching mechanism includes a first inner mold, the first inner mold is symmetrically fixed in the frame, the lifting plate is slidably connected to the lifting frame, the lifting frame is symmetrically slidably connected to a rectangular rod, a first tension spring is arranged between the rectangular rod and the lifting frame, a rectangular groove is opened on the outer wall of the rectangular rod, a T-shaped rod is slidably connected in the rectangular groove, the T-shaped rod is slidably connected to the lifting frame, a second tension spring is arranged between the T-shaped rod and the lifting frame, the T-shaped rod is used in conjunction with the movable rod, and the bottom end of the rectangular rod is fixed to the first outer mold.

[0010] Furthermore, the second switching mechanism also includes a slider, the bottom of the movable rod is fixedly connected to the slider, the slider is slidably connected to the frame, a lifting block is symmetrically slidably connected in the frame, one side of the lifting block is fixedly connected to a protruding shaft, a Z-shaped groove is opened through one side of the slider, one end of the protruding shaft is stuck in the Z-shaped groove and slides therein, and the other side of the lifting block is fixedly connected to a second inner mold, and the second inner mold is slidably sleeved on the outer wall of the first inner mold.

[0011] Furthermore, the second switching mechanism also includes a blocking block, which is fixed on the T-shaped rod and slidably connected to the lifting frame. The rectangular rod and the outer wall of the first outer mold are jointly slidably sleeved with a second outer mold, and a reset spring is arranged between the second outer mold and the first outer mold.

[0012] Furthermore, a hydraulic cylinder is included. The hydraulic cylinder is installed in the frame. The telescopic end of the hydraulic cylinder is fixedly connected to a rectangular sleeve. The rectangular sleeve is slidably sleeved on the outer wall of the lifting frame. A second compression spring is provided between the rectangular sleeve and the lifting frame. A limiting groove is provided on the outer wall of the lifting frame. An elastic limiting rod is slidably connected to the outer wall of the rectangular sleeve. One end of the elastic limiting rod is stuck in the limiting groove of the lifting frame and slides therein.

[0013] Furthermore, a wedge block is included. The top of the lifting plate is fixedly connected with the wedge block, and the wedge block is used in conjunction with the elastic limiting rod.

[0014] Furthermore, it also includes a screw sleeve, the bottom of the first speed gear box and the bottom of the second speed gear box are both fixedly connected to the screw sleeve, the screw sleeve is movably sleeved on the outer walls of the first tap and the second tap respectively, the inner wall of the screw sleeve is provided with a spiral groove, the outer walls of the first tap and the second tap are both fixedly connected to a protrusion, the protrusion is stuck in the spiral groove of the screw sleeve and slides therein. Beneficial effects

[0015] 1. The present invention can quickly determine the size of the plate through the design of the first switching mechanism. When switching from a small-sized plate to a large-sized plate, the large-sized plate squeezes the outer walls of the two swing arms, causing the special-shaped rack to move forward, thereby changing the positions of the first tap and the second tap. There is no need to replace the mold, effectively improving production efficiency.

[0016] 2. The present invention utilizes a second switching mechanism to change the positions of the T-bar and the blocking block when the movable rod moves, thereby varying the punching shape according to sheet materials of varying sizes. Furthermore, the design of the elastic limiting rod and the wedge block allows the rectangular sleeve to continue descending relative to the lifting frame after the punching operation is completed, allowing the first or second tap to tap the sheet material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0018] Figure 2 Schematic diagram of the structure of the first switching mechanism of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation of the special-shaped rack of the present invention;

[0020] Figure 4 Schematic diagram of the structure of the limiting mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the transmission mechanism of the present invention;

[0022] Figure 6 Schematic diagram of the structure of the second switching mechanism of the present invention;

[0023] Figure 7 This is a schematic diagram of the installation of the first inner mold of the present invention;

[0024] Figure 8 This is a schematic diagram of the installation of the blocking block of the present invention;

[0025] Figure 9 This is a schematic diagram of the installation of the rectangular sleeve of the present invention;

[0026] Figure 10 This is a schematic diagram of the installation of the elastic limiting rod of the present invention;

[0027] Figure 11 This is a schematic diagram of the installation of the screw sleeve of the present invention;

[0028] Figure 12 Schematic diagram of the installation of the bump of the present invention.

[0029] Parts names and serial numbers in the figure: 1_frame, 101_transport track, 201_swing rod, 202_movable rod, 203_vertical rod, 204_special-shaped rack, 205_arc track, 206_first special-shaped frame, 207_second special-shaped frame, 208_first tap, 209_second tap, 210_first punching block, 211_second punching block, 301_piston tube, 302_piston rod, 303_rotating plate, 304_sealing plug, 401_first speed change gear box, 402 _Second speed gear box, 403_screw rod, 404_nut, 405_lifting plate, 406_arc bar, 501_first inner mold, 502_lifting frame, 503_rectangular rod, 504_T-shaped rod, 505_first outer mold, 601_slider, 602_lifting block, 603_second inner mold, 701_blocking block, 702_second outer mold, 801_hydraulic cylinder, 802_rectangular sleeve, 803_elastic limiting rod, 901_wedge block, 1001_screw sleeve, 1002_bump. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0031] A workpiece stamping die with tapping integrated die, such as Figure 1-Figure 4As shown, it includes a frame 1, a conveying track 101 is provided in the frame 1, and a first switching mechanism. The first switching mechanism includes a swing rod 201, a swing rod 201 is symmetrically hinged in the frame 1, a first torsion spring is provided between the bottom of the swing rod 201 and the frame 1, a movable rod 202 is symmetrically and horizontally slidably connected in the frame 1, a guide groove is provided on the top of the movable rod 202, a convex shaft is fixed to the bottom of the swing rod 201, one end of the convex shaft is stuck in the guide groove and slides therein, a vertical rod 203 is fixed to the top of the movable rod 202, a special-shaped rack 204 is provided in the frame 1, and the special-shaped rack 204 is hinged to the two vertical rods 203 respectively with a connecting rod, an arc track 205 is symmetrically fixed in the frame 1, and the arc on the right side A first special-shaped frame 206 is slidably connected to the inner side of the curved track 205, and a second special-shaped frame 207 is slidably connected to the inner side of the curved track 205 on the left side. The first special-shaped frame 206 and the second special-shaped frame 207 are arranged alternately. The bottom of the first special-shaped frame 206 and the top of the second special-shaped frame 207 are fixedly connected to gears meshing with the special-shaped rack 204. A first tap 208 and a second tap 209 are provided on the lower side of the first special-shaped frame 206 and the second special-shaped frame 207. The diameter of the second tap 209 is larger than that of the first tap 208. A first punching block 210 is fixedly connected to the bottom of the first tap 208, and a second punching block 211 is fixedly connected to the bottom end of the second tap 209. The diameter of the second punching block 211 is larger than that of the first punching block 210.

[0032] like Figure 4 As shown, it also includes a limiting mechanism, which includes a piston tube 301. The piston tube 301 is fixedly connected to the bottom of the conveying track 101, and the two movable rods 202 are fixedly connected to the side close to each other with piston rods 302. The piston rod 302 is stuck in the piston tube 301 and slides horizontally therein.

[0033] like Figure 4 As shown, the limiting mechanism also includes a rotating plate 303, which is hinged in the conveying track 101, and a second torsion spring is arranged between the rotating plate 303 and the conveying track 101. The rear side of the rotating plate 303 is fixed with a sealing plug 304 through a support rod, and a through hole is opened through the top of the piston tube 301. The sealing plug 304 is used in conjunction with the through hole to prevent air leakage in the piston tube 301.

[0034] like Figure 5 and Figure 6As shown, it also includes a transmission mechanism, which includes a first speed change gear box 401, and the first special-shaped frame 206 and the second special-shaped frame 207 are both fixedly connected with the first speed change gear box 401 and the second speed change gear box 402. The top ends of the first tap 208 and the second tap 209 are respectively connected to the output ends of the first speed change gear box 401 and the second speed change gear box 402 through a telescopic shaft. The input ends of the first speed change gear box 401 and the second speed change gear box 402 are both connected to a screw rod 403. When the screw rod 403 moves, it can pass through the first speed change gear box 401 The first tap 208 and the second tap 209 are rotated together with the second speed gear box 402. A nut 404 is fixedly sleeved on the top of the outer wall of the screw rod 403. A first compression spring is provided between the bottom of the nut 404 and the first speed gear box 401 and the second speed gear box 402 respectively. The first compression spring is sleeved on the outer wall of the screw rod 403. A lifting plate 405 is provided in the frame 1. The lifting plate 405 is symmetrically provided with arc grooves. The two nuts 404 are both stuck in the arc grooves and slide therein. An arc bar 406 used in conjunction with the nut 404 is fixed in the arc groove.

[0035] like Figure 6-Figure 8 As shown, it also includes a second switching mechanism, which includes a first inner mold 501. The first inner mold 501 is symmetrically fixed in the frame 1, and the two first inner molds 501 are located on both sides of the conveying track 101. The lifting plate 405 is vertically slidably connected to the lifting frame 502, and the lifting frame 502 is symmetrically vertically slidably connected to the rectangular rod 503. A first tension spring is arranged between the rectangular rod 503 and the top of the lifting frame 502, and the first tension spring is arranged on the outer wall of the rectangular rod 503. The outer wall of the rectangular rod 503 is provided with a rectangular groove, and a T-shaped rod 504 is horizontally slidably connected in the rectangular groove. The T-shaped rod 504 is slidably connected to the bottom of the lifting frame 502, and a second tension spring is arranged between the T-shaped rod 504 and the lifting frame 502. The T-shaped rod 504 is used in conjunction with the movable rod 202, and the bottom end of the rectangular rod 503 is fixed with the first outer mold 505.

[0036] like Figure 7 As shown, the second switching mechanism also includes a slider 601. The slider 601 is fixed to the bottom of the movable rod 202. The slider 601 is horizontally slidably connected to the frame 1. The lifting block 602 is symmetrically and vertically slidably connected in the frame 1. The front side of the lifting block 602 is fixed with a protruding shaft. A Z-shaped groove is opened through one side of the slider 601. One end of the protruding shaft is stuck in the Z-shaped groove and slides therein. The second inner mold 603 is fixed to the side where the two lifting blocks 602 are close to each other. The second inner mold 603 is slidably sleeved on the outer wall of the first inner mold 501. The slider 601 moves to lift the second inner mold 603 upward.

[0037] like Figure 8As shown, the second switching mechanism also includes a blocking block 701, which is fixedly connected to the T-shaped rod 504. The blocking block 701 is L-shaped and is horizontally slidably connected to the bottom of the lifting frame 502. The rectangular rod 503 and the outer wall of the first outer mold 505 are vertically slidably sleeved with the second outer mold 702, and a return spring is provided between the inner wall of the second outer mold 702 and the top of the first outer mold 505.

[0038] like Figure 9 and Figure 10 As shown, a hydraulic cylinder 801 is also included. The hydraulic cylinder 801 is installed in the frame 1. The telescopic end of the hydraulic cylinder 801 is fixedly connected to a rectangular sleeve 802. The rectangular sleeve 802 is vertically slidably sleeved on the outer wall of the lifting frame 502. A second compression spring is provided between the inner wall of the rectangular sleeve 802 and the top of the lifting frame 502. A limiting groove is provided on the outer wall of the lifting frame 502. An elastic limiting rod 803 is connected to the outer wall of the rectangular sleeve 802 in a horizontal sliding manner. One end of the elastic limiting rod 803 is stuck in the limiting groove of the lifting frame 502 and slides therein.

[0039] like Figure 9 and Figure 10 As shown, a wedge block 901 is also included. The top of the lifting plate 405 is fixed with the wedge block 901. The wedge block 901 is used in conjunction with the elastic limiting rod 803. When the elastic limiting rod 803 contacts the wedge block 901, the elastic limiting rod 803 can be separated from the limiting groove of the lifting frame 502.

[0040] like Figure 11 and Figure 12 As shown, a screw sleeve 1001 is further included. The bottom of the first speed gear box 401 and the second speed gear box 402 are both fixedly connected with the screw sleeve 1001. The screw sleeve 1001 is movably sleeved on the outer wall of the first tap 208 and the second tap 209 respectively. The inner wall of the screw sleeve 1001 is provided with a spiral groove. The outer wall of the first tap 208 and the second tap 209 are both fixedly connected with a protrusion 1002. The protrusion 1002 is stuck in the spiral groove of the screw sleeve 1001 and slides therein. When the first tap 208 and the second tap 209 rotate, the protrusion 1002 can slide along the spiral groove of the screw sleeve 1001, thereby causing the first tap 208 and the second tap 209 to fall downward.

[0041] The overall mold can be divided into two states according to production needs. The first state is for producing small-sized plates. Initially, the first torsion spring is in a released state, and the gap between the two movable rods 202 is small, and the gap between the two movable rods 202 is equal to the width of the small-sized plate. The small-sized plate to be punched is first placed on the conveying track 101, and the conveying track 101 conveys the small-sized plate forward. Then the small-sized plate contacts and squeezes the rear side of the rotating plate 303. The rotating plate 303 is forced to rotate forward with the connection point of the conveying track 101 as the center of the circle, and drives the sealing plug 304 to move through the support rod. The second torsion spring is forced to shrink, and the sealing plug 304 no longer blocks the through hole of the piston tube 301 after movement. Then the two sides of the small-sized plate are just in line with the two swinging plates. The sides of the movable rods 201 that are close to each other are in contact, and are in contact with the sides of the two movable rods 202 that are close to each other. The swing rod 201 and the movable rod 202 will not move, and the conveying track 101 continues to convey the small-sized plate forward. Subsequently, the small-sized plate is no longer in contact with the rotating plate 303. The rotating plate 303 can move after being freed from the restriction. The second torsion spring is released to drive the rotating plate 303 to rotate and reset. The rotating plate 303 drives the sealing plug 304 to reset through the support rod. At this time, the tops of the two first inner molds 501 are in contact with the bottoms of the small-sized plate, and then the hydraulic cylinder 801 is started. The telescopic end of the hydraulic cylinder 801 extends to drive the rectangular sleeve 802 to descend. The rectangular sleeve 802 drives the lifting frame 502 to descend through the elastic limiting rod 803, and the lifting frame 502 drives the rectangular rod 503, the T-shaped rod 504 and the blocking block 701 fall downward, the rectangular rod 503 drives the first outer mold 505 to fall downward, the first outer mold 505 drives the second outer mold 702 to fall downward through the return spring, and then the bottom of the first outer mold 505 and the second outer mold 702 come into contact with the top surface of the small-sized plate, the telescopic end of the hydraulic cylinder 801 continues to extend, thereby causing the lifting frame 502 to continue to fall, and the lifting frame 502 continues to drive the T-shaped rod 504 to fall. The second outer mold 702 is restricted by the small-sized plate and cannot continue to fall. The lifting frame 502 squeezes the bottom of the inner wall of the rectangular groove of the rectangular rod 503 through the T-shaped rod 504, causing the first outer mold 505 to fall downward relative to the second outer mold 702, and the gap between the first outer mold 505 and the second outer mold 702 increases. , the return spring is stretched under force, and at this time, the first outer mold 505 cooperates with the first inner mold 501 to stamp the small-sized plate under the action of the T-shaped rod 504, and then the wedge block 901 contacts and squeezes the inclined surface of the elastic limiting rod 803. The elastic limiting rod 803 is forced to extend and slide forward and disengage from the limiting groove of the lifting frame 502. At the same time, the bottom end of the rectangular sleeve 802 contacts the top of the lifting plate 405, and the telescopic end of the hydraulic cylinder 801 continues to drive the rectangular sleeve 802 to descend. The rectangular sleeve 802 squeezes the top of the lifting plate 405, causing the lifting plate 405 to fall downward. At this time, the first inner mold 501 provides support to the first outer mold 505 through the small-sized plate, and the first outer mold 505 provides support to the lifting frame 502 through the T-shaped rod 504.The lifting frame 502 is supported and will not fall downward. The gap between the inner wall of the rectangular sleeve 802 and the top of the lifting frame 502 is reduced, and the second compression spring is forced to shrink. When the lifting plate 405 falls downward, it drives the two arc strips 406 to fall. The two arc strips 406 squeeze the outer walls of the nuts 404 corresponding to the two first speed change gear boxes 401 respectively. The nuts 404 are forced to drive the screw rod 403 to fall. The first compression spring between the nut 404 and the first speed change gear box 401 is forced to shrink. When the screw rod 403 falls, it rotates the adjacent first tap 208 through the first speed change gear box 401 and the telescopic shaft. The first tap 208 drives the first punching block 210 to rotate. At the same time, the protrusion 1002 on the first tap 208 is screwed along the screw of the adjacent screw sleeve 1001. The rotary groove slides, causing the first tap 208 to drive the first punching block 210 to drop downward, the telescopic end of the telescopic shaft extends, and the nuts 404 corresponding to the two second speed-changing gear boxes 402 will not move without being affected by external forces, and the second tap 209 will not rotate or drop. Then the first punching block 210 contacts the top surface of the small-sized plate and punches a circular hole in the top surface of the small-sized plate, and the first tap 208 rotates and drops in the circular hole of the small-sized plate, thereby tapping the small-sized plate. Then the telescopic end of the hydraulic cylinder 801 is controlled to contract, and the contraction of the telescopic end of the hydraulic cylinder 801 drives the rectangular sleeve 802 to lift upward, and the rectangular sleeve 802 drives the elastic limit rod 803 to lift upward, and the first compression spring and the second compression spring are gradually released. The first compression spring passes through the screw The nut 404 and the arc bar 406 drive the lifting plate 405 to lift upward, and the nut 404 drives the screw rod 403 to lift upward. The screw rod 403 causes the adjacent first tap 208 to rotate in the opposite direction through the first speed gear box 401 and the telescopic shaft. The first tap 208 drives the first punching block 210 to rotate in the opposite direction. At the same time, the protrusion 1002 on the first tap 208 slides and lifts along the spiral groove of the adjacent screw sleeve 1001, and the telescopic end of the telescopic shaft contracts. The gap between the rectangular sleeve 802 and the lifting frame 502 gradually increases until the first compression spring and the second compression spring are completely released. At this time, the first tap 208 and the first punching block 210 are completely separated from the circular hole of the small-sized plate, and then the rectangular sleeve 802 continues to drive the elastic limiting rod 803 to lift upward. The elastic limiting rod 803 gradually moves away from the wedge block 901, and gradually shrinks and slides into the limiting groove of the lifting frame 502 until the elastic limiting rod 803 no longer contacts the wedge block 901. The elastic limiting rod 803 is completely retracted and reset. The rectangular sleeve 802 continues to rise and drives the lifting frame 502 to rise upward through the elastic limiting rod 803. The lifting frame 502 drives the rectangular rod 503 and the T-shaped rod 504 to rise upward. The rectangular rod 503 drives the first outer mold 505 to rise and reset. The reset spring between the first outer mold 505 and the second outer mold 702 gradually shrinks, and the gap between the first outer mold 505 and the second outer mold 702 gradually shortens until the reset spring shrinks and resets. The first outer mold 505 drives the second outer mold 702 to rise and reset through the reset spring.This completes the stamping and tapping work on small-sized plates.

[0042] The second state is to produce large-sized plates. First, the large-sized plate to be punched is placed on the conveying track 101, and the conveying track 101 conveys the large-sized plate forward. Then, the large-sized plate contacts and squeezes the rear side of the rotating plate 303. The rotating plate 303 is forced to rotate forward with the connection point of the conveying track 101 as the center of the circle, and drives the sealing plug 304 to move through the support rod. The second torsion spring is forced to shrink. After the sealing plug 304 moves, it no longer blocks the through hole of the piston tube 301. Then, the large-sized plate contacts the side of the two swinging rods 201 that are close to each other. It is worth noting that the width of the large-sized plate is greater than the gap between the two swinging rods 201. When the large-sized plate moves, it squeezes the outer wall of the two swinging rods 201. The two swinging rods 201 are forced to rotate with the frame 1 The connection of the circles rotates away from each other, the first torsion spring is forced to shrink, and at the same time, the convex shaft of the swing rod 201 squeezes the inner wall of the guide groove of the movable rod 202 and slides along the guide groove. The two movable rods 202 are forced to slide away from each other, and the movable rod 202 drives the corresponding piston rod 302 to move and squeezes the outer wall of the adjacent T-shaped rod 504. The gap between the two piston rods 302 increases, and the external air enters the piston tube 301 through the through hole of the piston tube 301. At the same time, the gap between the two T-shaped rods 504 increases, and the second tension spring between the T-shaped rod 504 and the lifting frame 502 is forced to extend. When the T-shaped rod 504 moves, it drives the blocking block 701 to move, and then the T-shaped rod 504 breaks away from the rectangular groove of the rectangular rod 503. After the rectangular rod 503 breaks away from the restriction, the first The outer mold 505 is movable. After the blocking block 701 moves, the bottom of the blocking block 701 contacts the top of the second outer mold 702. At the same time, the movable rod 202 drives the vertical rod 203 and the slider 601 to move horizontally. The two vertical rods 203 and the two sliders 601 move away from each other. The two vertical rods 203 respectively pull the special-shaped rack 204 through the connecting rods thereon. The special-shaped rack 204 is forced to move forward and drives the first special-shaped frame 206 and the second special-shaped frame 207 to move through the gears on the first special-shaped frame 206 and the second special-shaped frame 207. The first special-shaped frame 206 and the second special-shaped frame 207 move forward along the corresponding arc track 205 respectively, and drive the first speed change gear box 401 and the second speed change gear box 402 thereon to move. The first speed change gear The box 401 and the second speed gear box 402 respectively drive the corresponding first tap 208, the second tap 209 and the screw rod 403 to move, and the screw rod 403 drives the nut 404 to slide along the arc groove of the lifting plate 405 until the two movable rods 202 stop moving. At this time, the nut 404 stops moving, and the nut 404 corresponding to the first speed gear box 401 is no longer in contact with the arc bar 406, and the nut 404 corresponding to the second speed gear box 402 is in contact with the arc bar 406. At the same time, the inner corners of the Z-shaped grooves of the two sliders 601 contact and squeeze the outer wall of the protruding shaft of the lifting block 602. The protruding shaft is forced to drive the lifting block 602 to lift and slide upward, and the lifting block 602 drives the second inner mold 603 to lift upward. After the second inner mold 603 is lifted,The second inner mold 603 is at the same horizontal plane as the top surface of the first inner mold 501. Then the large-sized plate passes over the rotating plate 303 and no longer contacts it. The rotating plate 303 is free from the restriction and can move. The second torsion spring is released to drive the rotating plate 303 to rotate and reset. The rotating plate 303 drives the sealing plug 304 to reset through the support rod. After the sealing plug 304 is reset, the through hole of the piston tube 301 is blocked, so that the air in the piston tube 301 cannot be discharged. Then the hydraulic cylinder 801 is started. The telescopic end of the hydraulic cylinder 801 extends to drive the rectangular sleeve 802 to descend. The rectangular sleeve 802 drives the lifting frame 502 to descend through the elastic limiting rod 803. The lifting frame 502 drives the rectangular rod 503 to descend downward through the first tension spring, and drives the T-shaped rod 504 and the blocking block 7 01 descends downward, the rectangular rod 503 drives the first outer mold 505 to descend downward, and the first outer mold 505 drives the second outer mold 702 to descend through the return spring, and then the bottom of the first outer mold 505 and the second outer mold 702 contacts the top surface of the large-sized plate, and the telescopic end of the hydraulic cylinder 801 continues to extend, thereby causing the lifting frame 502 to continue to descend, and causing the T-shaped rod 504 and the blocking block 701 to continue to descend. The first outer mold 505 is restricted by the large-sized plate and cannot continue to descend. The lifting frame 502 continues to descend relative to the rectangular rod 503 and the first outer mold 505, and the first tension spring is extended under force. The lifting frame 502 drives the second outer mold 702 to continue to descend through the blocking block 701, and the return spring between the second outer mold 702 and the first outer mold 505 is stressed. Contraction, at this time, the second outer mold 702 cooperates with the second inner mold 603 to stamp and form the large-sized plate under the action of the blocking block 701, and then the wedge block 901 contacts and squeezes the outer wall of the elastic limiting rod 803, and then repeats the above steps until the lifting plate 405 drops down and drives the two arcuate bars 406 to drop down. The two arcuate bars 406 squeeze the outer walls of the nuts 404 corresponding to the two second speed-changing gear boxes 402 respectively, and the nuts 404 are forced to drive the screw rod 403 to drop. The first compression spring between the nut 404 and the second speed-changing gear box 402 is forced to contract. When the screw rod 403 drops, it rotates the adjacent second tap 209 through the second speed-changing gear box 402 and the telescopic shaft, and the second tap 209 drives the second punch The pressing block 211 rotates, and at the same time, the protrusion 1002 on the second tap 209 slides along the spiral groove of the adjacent screw sleeve 1001, so that the second tap 209 drives the second punching block 211 to drop downward, the telescopic end of the telescopic shaft extends, and the nuts 404 corresponding to the two first speed change gear boxes 401 are not affected by external forces and do not move. The first tap 208 does not rotate and drop. Then the second punching block 211 contacts and squeezes the top surface of the large-sized plate, thereby punching a circular hole out of the top surface of the large-sized plate, and the second tap 209 rotates and drops in the circular hole of the large-sized plate, thereby tapping the large-sized plate. Then the telescopic end of the hydraulic cylinder 801 is controlled to contract, and the above steps are repeated until the nut 404 drives the screw rod 403 to lift upward.The screw rod 403 causes the adjacent second tap 209 to rotate in the opposite direction through the second speed-changing gear box 402 and the telescopic shaft. The second tap 209 drives the second punching block 211 to rotate in the opposite direction. At the same time, the protrusion 1002 on the second tap 209 slides and rises along the spiral groove of the adjacent screw sleeve 1001, and the telescopic end of the telescopic shaft contracts until the first compression spring is completely released. The second tap 209 and the second punching block 211 are completely separated from the circular hole of the large-sized plate. Then the rectangular sleeve 802 continues to drive the elastic limiting rod 803 to lift upward. The elastic limiting rod 803 gradually moves away from the wedge block 901 and gradually contracts and slides into the lifting frame 502. The elastic limiting rod 803 is completely retracted and reset in the limiting groove until it no longer contacts the wedge block 901. The elastic limiting rod 803 is completely retracted and reset, and the rectangular sleeve 802 continues to rise. The elastic limiting rod 803 drives the lifting frame 502 to rise upward. The lifting frame 502 drives the T-shaped rod 504 and the blocking block 701 to rise upward. The first tension spring between the rectangular rod 503 and the lifting frame 502 gradually contracts and resets, causing the rectangular rod 503 to drive the first outer die 505 to descend relative to the second outer die 702. The reset spring between the second outer die 702 and the first outer die 505 is gradually released and reset, thus completing the stamping and tapping work of the large-sized plate.

[0043] When it is necessary to directly switch to the production of large-sized plates during the production of small-sized plates, the above steps can be repeated to achieve the same effect. When it is necessary to switch from large-sized plates to small-sized plates, the small-sized plates are placed on the rear side of the large-sized plates on the conveying track 101 until the last large-sized plate is stamped and tapped. Then the conveying track 101 conveys the small-sized plates forward. The small-sized plates are in contact with and squeezed by the rear side of the rotating plate 303, causing the rotating plate 303 to rotate and the sealing plug 304 to move. The second torsion spring is forced to shrink, and the sealing plug 304 no longer blocks the through hole of the piston tube 301. The first torsion spring is released to drive the swing rod 2 01 rotates to reset, the convex shaft of the swing rod 201 squeezes the inner wall of the guide groove of the movable rod 202 and slides along the guide groove, so that the two movable rods 202 slide and reset, and the movable rod 202 drives the corresponding piston rod 302 to move and reset, and no longer squeezes the outer wall of the T-shaped rod 504, the gap between the two piston rods 302 is restored, the air in the piston tube 301 is discharged through the through hole, and the second tension spring contracts to drive the T-shaped rod 504 to reset. After the T-shaped rod 504 is reset, it is re-stuck in the rectangular groove of the rectangular rod 503, thereby limiting the rectangular rod 503, and at the same time, the T-shaped rod 504 drives the blocking block 701 to move and reset, so that the bottom of the blocking block 701 is no longer in contact with the second outer mold The top of 702 contacts, and at the same time, the movable rod 202 drives the vertical rod 203 and the slider 601 to move horizontally. The two vertical rods 203 and the two sliders 601 move close to each other. The two vertical rods 203 push the special-shaped rack 204 through the connecting rod thereon, so that the special-shaped rack 204 moves and resets. The special-shaped rack 204 drives the first special-shaped frame 206 and the second special-shaped frame 207 to move and reset through the gears on the first special-shaped frame 206 and the second special-shaped frame 207. The first special-shaped frame 206 and the second special-shaped frame 207 respectively drive the first speed change gear box 401 and the second speed change gear box 402 thereon to move and reset. The first speed change gear box 401 and the second speed change gear box 402 are respectively driven to move and reset. The box 402 drives the corresponding first tap 208, second tap 209 and screw rod 403 to move and reset respectively. The screw rod 403 drives the nut 404 to slide along the arc groove of the lifting plate 405 until the two movable rods 202 are completely reset, and the nut 404 corresponding to the first speed change gear box 401 contacts the arc bar 406. At the same time, the inner wall corners of the Z-shaped grooves of the two sliders 601 contact the outer wall of the protruding shaft of the corresponding lifting block 602. The lifting block 602 is affected by its own weight and the weight of the protruding shaft to drive the protruding shaft to drop and reset. The lifting block 602 drives the second inner mold 603 to drop and reset, and then repeat the above steps to perform stamping and tapping work on small-sized plates.

[0044] Through the above steps, the overall mold can be quickly switched between the first state and the second state according to the size of the plate on the conveying track 101, which greatly improves the production efficiency. In addition, the through hole of the piston tube 301 is sealed by the sealing plug 304. After the plate completes the stamping and tapping work and leaves the conveying track 101, the position of the movable rod 202 remains stable, preventing the first special-shaped frame 206 and the second special-shaped frame 207 from moving frequently, causing wear between parts.

[0045] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A workpiece stamping die internal tapping integrated die, comprising a frame (1), wherein a conveying track (101) is provided in the frame (1), characterized in that: The invention also includes a first switching mechanism, which includes a swing rod (201), the swing rod (201) is symmetrically hinged in the frame (1), a first torsion spring is provided between the swing rod (201) and the frame (1), a movable rod (202) is symmetrically slidably connected in the frame (1), a guide groove is provided at the top of the movable rod (202), a convex shaft is fixedly connected to the bottom of the swing rod (201), one end of the convex shaft is stuck in the guide groove and slides therein, a vertical rod (203) is fixedly connected to the top of the movable rod (202), a special-shaped rack (204) is provided in the frame (1), and a connecting rod is hinged between the special-shaped rack (204) and the two vertical rods (203), and the frame (1) is provided with a special-shaped rack. The frame (1) is symmetrically fixed with arc-shaped rails (205), wherein a first special-shaped frame (206) is slidably connected to one of the arc-shaped rails (205), and a second special-shaped frame (207) is slidably connected to the other arc-shaped rail (205), the bottom of the first special-shaped frame (206) and the top of the second special-shaped frame (207) are both fixed with gears meshing with the special-shaped rack (204), the lower sides of the first special-shaped frame (206) and the second special-shaped frame (207) are both provided with a first tap (208) and a second tap (209), the bottom of the first tap (208) is fixed with a first punching block (210), and the bottom end of the second tap (209) is fixed with a second punching block (211).

2. The integrated die for tapping inside a workpiece stamping die according to claim 1, characterized in that: It also includes a limiting mechanism, which includes a piston tube (301). The bottom of the conveying track (101) is fixedly connected to the piston tube (301), and one side of the movable rod (202) is fixedly connected to the piston rod (302). The piston rod (302) is inserted into the piston tube (301) and slides therein.

3. The integrated die for tapping inside a workpiece stamping die according to claim 2, characterized in that: The limiting mechanism further includes a rotating plate (303), the rotating plate (303) is hinged in the conveying track (101), a second torsion spring is provided between the rotating plate (303) and the conveying track (101), a sealing plug (304) is fixedly connected to one side of the rotating plate (303) via a support rod, a through hole is provided through the top of the piston tube (301), and the sealing plug (304) is used in conjunction with the through hole.

4. The integrated die for tapping inside a workpiece stamping die according to claim 1, characterized in that: The transmission mechanism also includes a first speed change gear box (401), the first special-shaped frame (206) and the second special-shaped frame (207) are both fixedly connected with the first speed change gear box (401) and the second speed change gear box (402), the top ends of the first tap (208) and the second tap (209) are respectively connected to the output ends of the first speed change gear box (401) and the second speed change gear box (402), and the first speed change gear box (401) and the second speed change gear box (402) are respectively connected to the output ends of the first speed change gear box (401) and the second speed change gear box (402). The input ends are connected to a screw rod (403), the outer wall of the screw rod (403) is fixedly sleeved with a nut (404), and a first compression spring is provided between the nut (404) and the first speed change gear box (401) and the second speed change gear box (402), respectively. A lifting plate (405) is provided in the frame (1), and arc grooves are symmetrically opened on the lifting plate (405), and the nut (404) is stuck in the arc groove and slides therein, and an arc bar (406) used in conjunction with the nut (404) is fixed in the arc groove.

5. The integrated die for tapping inside a workpiece stamping die according to claim 4, characterized in that: The invention also includes a second switching mechanism, which includes a first inner mold (501), the first inner mold (501) is symmetrically fixed in the frame (1), a lifting frame (502) is slidably connected to the lifting plate (405), a rectangular rod (503) is symmetrically slidably connected to the lifting frame (502), a first tension spring is provided between the rectangular rod (503) and the lifting frame (502), a rectangular groove is provided on the outer wall of the rectangular rod (503), a T-shaped rod (504) is slidably connected in the rectangular groove, the T-shaped rod (504) is slidably connected to the lifting frame (502), a second tension spring is provided between the T-shaped rod (504) and the lifting frame (502), the T-shaped rod (504) is used in conjunction with the movable rod (202), and the bottom end of the rectangular rod (503) is fixed to the first outer mold (505).

6. The integrated die for tapping inside a workpiece stamping die according to claim 5, characterized in that: The second switching mechanism further comprises a slider (601), the bottom of the movable rod (202) is fixedly connected to the slider (601), the slider (601) is slidably connected to the frame (1), a lifting block (602) is symmetrically slidably connected in the frame (1), one side of the lifting block (602) is fixedly connected to a protruding shaft, a Z-shaped groove is provided through one side of the slider (601), one end of the protruding shaft is inserted into the Z-shaped groove and slides therein, and a second inner mold (603) is fixedly connected to the other side of the lifting block (602), and the second inner mold (603) is slidably sleeved on the outer wall of the first inner mold (501).

7. The integrated die for tapping inside a workpiece stamping die according to claim 5, characterized in that: The second switching mechanism further comprises a blocking block (701), the blocking block (701) being fixedly connected to the T-shaped rod (504), the blocking block (701) being slidably connected to the lifting frame (502), the rectangular rod (503) and the outer wall of the first outer mold (505) being slidably sleeved with a second outer mold (702), and a return spring being provided between the second outer mold (702) and the first outer mold (505).

8. The integrated die for tapping inside a workpiece stamping die according to claim 7, characterized in that: The invention also includes a hydraulic cylinder (801), wherein the hydraulic cylinder (801) is installed in the frame (1), and a rectangular sleeve (802) is fixedly connected to the telescopic end of the hydraulic cylinder (801), and the rectangular sleeve (802) is slidably sleeved on the outer wall of the lifting frame (502), and a second compression spring is provided between the rectangular sleeve (802) and the lifting frame (502), and a limiting groove is provided on the outer wall of the lifting frame (502), and an elastic limiting rod (803) is slidably connected to the outer wall of the rectangular sleeve (802), and one end of the elastic limiting rod (803) is clamped in the limiting groove of the lifting frame (502) and slides therein.

9. The integrated die for tapping inside a workpiece stamping die according to claim 8, characterized in that: It also includes a wedge-shaped block (901), the top of the lifting plate (405) is fixedly connected to the wedge-shaped block (901), and the wedge-shaped block (901) is used in conjunction with the elastic limiting rod (803).

10. The integrated die for tapping inside a workpiece stamping die according to claim 4, characterized in that: The invention also includes a screw sleeve (1001), the bottom of the first speed gear box (401) and the bottom of the second speed gear box (402) are fixedly connected to the screw sleeve (1001), the screw sleeve (1001) is movably sleeved on the outer wall of the first tap (208) and the second tap (209), the inner wall of the screw sleeve (1001) is provided with a spiral groove, the outer wall of the first tap (208) and the outer wall of the second tap (209) are fixedly connected to a protrusion (1002), and the protrusion (1002) is stuck in the spiral groove of the screw sleeve (1001) and slides therein.

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