Automatic stamping die for communication metal spring

Abstract

The application relates to a die technology field of intelligent manufacturing equipment, and discloses an automatic stamping die for communication metal spring sheets, wherein the upper die is located directly above the lower die, four groups of first guide grooves are evenly arranged at the upper end surface edges of the lower die, guide columns are welded to the lower end surface of the upper die and respectively inserted into the four groups of first guide grooves, a die groove is arranged at the middle position of the upper end surface of the lower die, a first lower die core and a second lower die core are sequentially arranged on the left and right of the die groove, and the second lower die core is movably arranged in the die groove. The automatic stamping die for communication metal spring sheets can cause the relative movement of the sliding block of each group of wall grabbing structures and the long groove when the square displacement table moves, can generate a relative force to cause the outward movement of the wall grabbing structure in the horizontal direction, can generate extrusion force on the wall grabbing pressing sheet and the groove wall of the connecting groove to make the wall grabbing pressing sheet bend, can make the wall grabbing pressing sheet of the four groups of wall grabbing structures fully grab arms, and can ensure the firmness of the positioning of the movable die core.

Description

Technical Field

[0001] The present invention relates to the technical field of molds for intelligent manufacturing equipment, and in particular to an automated stamping mold for communication metal shrapnel. Background Art

[0002] A metal dome is a thin, elastic component typically made of metal (such as stainless steel, beryllium copper, or spring steel). It deforms when subjected to an external force and quickly returns to its original shape after the force is removed. This characteristic makes metal domes important in communications equipment, particularly in electronic components such as membrane switches, contact switches, PCBs, and FPCs. They feature high elasticity, excellent conductivity, low contact resistance, and corrosion resistance. Metal domes are stamped during production to improve their local structural strength and flatness, extending the material's service life. This is why stamping dies are used.

[0003] The existing stamping die set has many technical defects when in use. First, since the metal spring has two upper and lower spring parts, they need to be stamped separately using the die, which is time-consuming and labor-intensive. In addition, the existing stamping die cannot be adjusted according to the size of the metal spring, and the die core needs to be prefabricated. Second, during the stamping process, due to structural changes in the upper and lower spring parts, the middle bending section will be squeezed, and a certain degree of strong deformation will occur without restraint, reducing the deformation capacity of the bending section. If a clamping device is added to overcome this situation, it will easily cause the metal spring to break. Third, during the movement of the guide pillar, a spring structure is often used to buffer the guide pillar, thereby reducing the shock of the entire die set, reducing the reaction force generated by stamping, and extending the service life of the die set. However, the current spring structure will increase material fatigue after long-term use, thereby reducing the buffering effect and requiring regular replacement, which is time-consuming and labor-intensive.

[0004] In summary, considering that the existing facilities cannot meet the work requirements, we propose an automated stamping die for communication metal shrapnel. Summary of the Invention

[0005] The main purpose of the present invention is to provide an automated stamping die for communication metal domes, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A communication metal shrapnel automated stamping die, comprising an upper die and a lower die, wherein the upper die is located directly above the lower die, and four groups of first guide grooves are evenly arranged at the edge of the upper end face of the lower die. The lower end face of the upper die is welded with guide pillars respectively inserted into the four groups of first guide grooves, and a molding groove is arranged in the middle position of the upper end face of the lower die, and the molding groove is sequentially distributed with a first lower mold core and a second lower mold core on the left and right sides, and the second lower mold core is movably arranged in the molding groove.

[0008] As a preferred solution of the communication metal shrapnel automatic stamping die described in the present invention, a metal shrapnel is placed in the mold groove, and the metal shrapnel includes an upper shrapnel, a lower shrapnel and a bent portion. The upper shrapnel is placed on the first lower mold core, and the lower shrapnel is placed on the second lower mold core. The first lower mold core and the second lower mold core are connected by a bent portion.

[0009] As a preferred solution of the communication metal shrapnel automatic stamping die described in the present invention, a drive shaft is horizontally arranged inside the lower die and below the first lower die core, and the two ends of the drive shaft are fixed by the first bearing seat and the inner wall of the lower die.

[0010] As a preferred solution of the automatic stamping die for communication metal shrapnel described in the present invention, wherein: a first upper die core is welded at the middle position of the lower end face of the upper die, the first upper die core corresponds to the first lower die core, the lower end face of the upper die is movably provided with a second upper die core located on the right side of the first upper die core, the second upper die core corresponds to the second lower die core, the interior of the upper die is provided with an upper distance adjustment structure acting on the second upper die core, the interior of the lower die is provided with a lower distance adjustment structure acting on the second lower die core, the upper distance adjustment structure and the lower distance adjustment structure are symmetrical parts and have the same structure.

[0011] As a preferred solution of the communication metal shrapnel automatic stamping die described in the present invention, the upper distance adjustment structure and the lower distance adjustment structure both include hydraulic cylinders, a telescopic rod is provided inside the hydraulic cylinder to move outward, and a square connecting seat is vertically welded to the end of the telescopic rod, and a connecting groove for the up and down movement of the square connecting seat is provided inside the upper mold and the lower mold, and the square connecting seat on the upper distance adjustment structure and the lower distance adjustment structure is respectively connected to the second upper mold core and the second lower mold core at one end away from the telescopic rod.

[0012] As a preferred solution of the automatic stamping die for communication metal shrapnel described in the present invention, a linear cylinder is vertically installed inside the square connecting seat near the position of the telescopic rod, a cylinder rod is movably provided inside the linear cylinder extending outward, a square displacement platform is welded to the end of the cylinder rod, and the four surfaces of the square displacement platform are longitudinally symmetrically provided with long grooves, the number of the long grooves is 4 groups, a climbing surface is provided at the bottom of the long grooves, and a wall grabbing structure is installed in each group of the long grooves, and the number of the wall grabbing structures is 4 groups.

[0013] As a preferred solution of the communication metal dome automatic stamping die described in the present invention, the wall grabbing structure includes a slider, a veneer, a connecting column, a stop sleeve, a return spring, a guide block and a wall grabbing pressure piece, the slider is slidably arranged in the long groove, the bottom of the slider is provided with a veneer adapted for the climbing surface, the end of the slider away from the veneer is horizontally welded with a connecting column, the middle of the connecting column is sleeved with a stop sleeve, the connecting column is welded with a guide block at one end away from the slider, the middle position of the four surfaces of the square connecting seat are all provided with a second guide groove for the guide block to move, a return spring sleeved outside the connecting column is fixed between the end of the stop sleeve and the second guide groove, the guide block is welded with a wall grabbing pressure piece extending out of the second guide groove at one end away from the connecting column, the wall grabbing pressure piece is a curved spring steel sheet structure, and the four groups of wall grabbing pressure pieces all act on the groove wall of the connecting groove.

[0014] As a preferred solution of the communication metal shrapnel automatic stamping die described in the present invention, wherein: a large gear is sleeved on the middle part of the driving shaft, a small gear is meshed on the oblique lower side of the large gear, and the small gear is sleeved on the output shaft of the first servo motor. The first servo motor is horizontally fixed inside the lower mold, and both ends of the driving shaft extend outward from the first bearing seat and are respectively provided with a forward threaded shaft portion and a reverse threaded shaft portion, and both the forward threaded shaft portion and the reverse threaded shaft portion are movably provided with shrapnel protectors, and the number of the shrapnel protectors is 2 groups.

[0015] As a preferred solution of the automatic stamping die for communication metal shrapnel described in the present invention, the shrapnel protector includes a bending arm, a nut sleeve, a rear clamping rod, a limiting mouth, a bandage, a movable groove and a front clamping rod structure, the inner wall of the groove is provided with a receiving groove for the movement of the bending arm, the bottom of the bending arm is equipped with a nut sleeve that acts on the forward threaded shaft and the reverse threaded shaft, the upper end of the bending arm is fixedly connected to the rear clamping rod at a rear position, the middle of the inner wall of the first lower mold core is horizontally provided with a clamping groove for the horizontal movement of the rear clamping rod, the upper end of the bending arm is provided with a movable groove at the front, and the front clamping rod structure is rotatably arranged in the movable groove, a limiting mouth that acts on the bending part is formed between the rear clamping rod and the front clamping rod structure, a bandage connected to the rear clamping rod and the front clamping rod structure is provided in the limiting mouth, and the bandage acts on the edge position of the bending part.

[0016] As a preferred solution of the communication metal dome automatic stamping die described in the present invention, the front card rod structure includes a front card rod, a rotating part, an inner bearing, a fixed shaft, a baffle, a torsion spring and a guide wheel, wherein a part of the front card rod is located in the movable groove, and the front card rod is parallel to the rear card rod in a natural state, and the end of the front card rod located in the movable groove is provided with a rotating part, and an inner bearing is installed in the rotating part, and the inner bearing is sleeved on the outer side of the fixed shaft, and the fixed shaft passes through the rotating part, and the upper and lower parts of the fixed shaft are fixed by the baffle and the inner wall of the bending arm, and the area where the fixed shaft extends out of the rotating part is symmetrically sleeved with two groups of torsion springs, one end of the torsion spring is fixed to the rotating part, and the other end of the torsion spring is fixed to the groove wall of the movable groove, and the inner side surface of the front card rod is installed with a guide wheel, and the number of the guide wheels is preferably 1-2 groups.

[0017] As a preferred solution of the automatic stamping die for communication metal shrapnel described in the present invention, wherein: the lower end of each group of the first guide grooves is connected with a side guard groove, the side guard groove is larger than the first guide groove, and a circular pressure block is movably installed in the side guard groove, the circular pressure block is in contact with the lower end of the guide pillar, the lower end of the circular pressure block is glued with a capsule column, the lower end of the capsule column is connected with a spherical shock-absorbing airbag, the lower end of the side guard groove is connected with a spherical extrusion groove, and the spherical shock-absorbing airbag is located in the spherical extrusion groove.

[0018] As a preferred solution of the communication metal dome automatic stamping die described in the present invention, the lower end of the spherical shock-absorbing airbag is connected to the positioning bend pipe, the positioning bend pipe is fixed inside the lower mold, the end of the positioning bend pipe away from the spherical shock-absorbing airbag is connected to the backup airbag, the backup airbag is horizontally arranged, and a sealing splint is installed at the tail of the backup airbag, the sealing splint is fixed inside the lower mold, and an L-shaped guide rod is welded to the upper end of the sealing splint.

[0019] As a preferred solution of the automatic stamping die for communication metal shrapnel described in the present invention, wherein: an air compressor seat is movably provided on the L-shaped guide rod, and a movable rod groove for the L-shaped guide rod to pass through is provided horizontally through the interior of the air compressor seat, and two groups of rotating shafts are vertically and symmetrically installed inside the air compressor seat, and a second bearing seat is connected to the outer sleeve of the rotating shaft, and the second bearing seat is fixed to the inner wall of the air compressor seat, and the upper ends of the two groups of rotating shafts are both sleeved with connecting gears, and the two groups of connecting gears are meshed with each other, and one group of the rotating shafts extends upward and is connected to the second servo motor through a coupling, and the second servo motor is arranged through the upper end surface of the air compressor seat.

[0020] As a preferred solution of the communication metal shrapnel automatic stamping die described in the present invention, the lower ends of the two groups of rotating shafts are welded with compressed air sealing wheels, and the compressed air sealing wheels extend downward from the compressed air device seat. The two groups of compressed air sealing wheels act on the standby airbags, and the lower ends of the two groups of compressed air sealing wheels are welded with short shafts, and the short shafts are sleeved with traveling gears. A bottom plate is fixed inside the lower mold and directly below the standby airbag. Tooth tracks are symmetrically arranged on both sides of the upper end of the bottom plate, and the two groups of traveling gears act on the tooth tracks respectively.

[0021] As a preferred solution of the automatic stamping die for metal domes for communications described in the present invention, the lower end surface of the lower die is provided with an adjustment groove for movement of the second upper die core.

[0022] As a preferred solution of the automatic stamping die for communication metal domes described in the present invention, the card slot and the cross-section size of the rear card rod are adapted to each other, and the card slot and the two groups of storage slots are connected.

[0023] As a preferred solution of the communication metal dome automatic stamping die described in the present invention, the lower distance adjustment structure drives the second lower mold core to move up and down, and the upper distance adjustment structure drives the second upper mold core to move up and down.

[0024] As a preferred solution of the automatic stamping die for communication metal domes described in the present invention, the spherical shock-absorbing airbag and the air-reserve airbag are connected through a positioning elbow.

[0025] As a preferred solution of the automatic stamping die for communication metal domes described in the present invention, the air pressure device seat moves linearly along the air pressure device seat.

[0026] As a preferred solution of the automatic stamping die for communication metal domes described in the present invention, two groups of the air-compression sealing wheels press and hold the air bag.

[0027] The present invention provides an improved automatic stamping die for metal domes for communication, which has the following significant improvements and advantages compared with the prior art:

[0028] The hydraulic cylinders on the upper and lower distance adjustment structures are activated respectively to extend or retract the telescopic rod. The two sets of square connecting seats respectively drive the second upper mold core and the second lower mold core to move up and down. Changing the position of the mold core can adapt to the stamping of metal shrapnel of different sizes, solving the problem of mold core prefabrication. In addition, it is a one-time stamping without the need for two times, saving time and effort.

[0029] Start the linear cylinder and extend the cylinder rod, driving the square translation table to move. When the square translation table moves, the slider and the long slot of each set of wall-grabbing structures move relative to each other, generating a relative force that causes the wall-grabbing structure to move outward in the horizontal direction. The guide block drives the wall-grabbing pressure piece to extend out of the second guide slot. The wall-grabbing pressure piece and the slot wall of the connecting slot generate an extrusion force to bend the wall-grabbing pressure piece, increasing the contact force, allowing the wall-grabbing pressure pieces on the four sets of wall-grabbing structures to fully grasp the arms, ensuring the firmness of the positioning of the movable mold core, and avoiding damage caused by excessive reaction force on the cylinder.

[0030] Start the first servo motor, and after a series of transmissions, the two sets of shrapnel protectors move toward each other along the forward threaded shaft and the reverse threaded shaft respectively, and the bending arms extend from the receiving slots respectively. The rear clamping rods on the two sets of shrapnel protectors move toward each other along the clamping slots, so that the bent parts are in the limit mouths and are tightened by the two sets of bandages, so that the entire metal shrapnel is centered in the groove, achieving the effect of automatic positioning and improving the accuracy of the metal shrapnel.

[0031] During the deformation process, the bent part exerts pressure on the front clamping rods on the two sets of shrapnel protectors, causing the torsion spring to twist and deform. The front clamping rod swings slightly outward from the movable groove, thereby removing the instantaneous force on the bent part of the metal shrapnel, achieving the effect of buffering protection and preventing the metal shrapnel from breaking. The front clamping rod strengthens the straightness of the bandage during the micro-swing process, improves the limiting effect on the metal shrapnel, and has a high degree of automation.

[0032] In the process of guiding the guide pillar downward, a downward pressure is exerted on the circular pressure block, causing the circular pressure block to move linearly along the retaining groove, squeezing the capsule column, and pressing the air in the capsule column into the spherical shock-absorbing airbag, causing the spherical shock-absorbing airbag to deform. The deformation force of the spherical shock-absorbing airbag and the flexible bearing force are used to offset the downward pressure force, thereby achieving the purpose of shock absorption and buffering, and improving the seismic performance of the mold group. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of an automated stamping die for metal domes for communications according to the present invention;

[0034] Figure 2 Schematic diagram of the bottom structure of the upper mold of the present invention;

[0035] Figure 3 Schematic diagram of the internal structure of the groove of the present invention;

[0036] Figure 4 Schematic diagram of the specific structure of the upper distance adjustment structure and the lower distance adjustment structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the internal structure of the square connecting seat of the present invention;

[0038] Figure 6 This is a schematic diagram of the specific structure of the wall-grasping structure of the present invention;

[0039] Figure 7 This is a schematic diagram of the connection between the metal shrapnel and the shrapnel protector of the present invention;

[0040] Figure 8 Schematic diagram of the external structure of the drive shaft of the present invention;

[0041] Figure 9 Schematic diagram of the transmission structure of the drive shaft of the present invention;

[0042] Figure 10 This is a schematic diagram of the specific structure of the shrapnel protector of the present invention;

[0043] Figure 11 Schematic diagram of the specific structure of the front clamping rod structure of the present invention;

[0044] Figure 12 is a cross-sectional view of the first guide groove of the present invention;

[0045] Figure 13 Schematic diagram of the lower end structure of the first guide groove of the present invention;

[0046] Figure 14 Schematic diagram of the connection structure of the spherical shock-absorbing airbag of the present invention;

[0047] Figure 15 Schematic diagram of the external structure of the air compression device seat of the present invention;

[0048] Figure 16 Schematic diagram of the internal structure of the air compression device seat of the present invention.

[0049] In the figure: 1. Upper mold; 2. Lower mold; 3. Guide pillar; 4. First guide groove; 5. Upper distance adjustment structure; 6. Lower distance adjustment structure; 7. Wall-grabbing structure; 71. Slider; 72. Veneer; 73. Connecting column; 74. Stopper; 75. Return spring; 76. Guide block; 77. Wall-grabbing pressure piece; 8. Shrapnel protector; 81. Bending arm; 82. Nut sleeve; 83. Rear clamping rod; 84. Limiting opening; 85. Bandage; 86. Movable slot; 9. Front latch structure; 90. Front latch; 91. Rotating portion; 92. Inner bearing; 93. Fixed shaft; 94. Stopper; 95. Torsion spring; 96. Guide wheel; 10. Metal spring; 11. Upper spring; 12. Lower spring; 13. Bending portion; 16. Adjustment slot; 17. Slot; 18. Storage slot; 19. Spherical extrusion slot; 20. First lower mold core; 21. Second lower mold core; 22. First upper mold core; 23 , second upper mold core; 24, groove; 30, hydraulic cylinder; 31, telescopic rod; 32, square connecting seat; 33, linear cylinder; 34, cylinder rod; 35, square translation table; 36, long groove; 37, climbing surface; 38, second guide groove; 40, drive shaft; 41, first bearing seat; 42, large gear; 43, small gear; 44, first servo motor; 45, forward threaded shaft; 46, reverse threaded shaft; 50, Side guard groove; 51. Round pressure block; 52. Bag column; 53. Spherical shock-absorbing airbag; 54. Positioning elbow; 55. Air bag; 56. Sealing splint; 57. L-shaped guide rod; 58. Bottom plate; 59. Tooth track; 60. Air compressor seat; 61. Moving rod groove; 62. Rotating shaft; 63. Second bearing seat; 64. Connecting gear; 65. Second servo motor; 66. Air compressor sealing wheel; 67. Short shaft; 68. Travel gear. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0051] like Figures 1-11 As shown, this embodiment provides an automated stamping die for communication metal shrapnel, comprising an upper die 1 and a lower die 2. The upper die 1 is located directly above the lower die 2, and four groups of first guide grooves 4 are evenly arranged at the edge of the upper end face of the lower die 2. The lower end face of the upper die 1 is welded with guide pillars 3 respectively inserted into the four groups of first guide grooves 4, which serve as guide limits.

[0052] Further, the middle position of the upper end surface of the lower mold 2 is provided with a type groove 24, and the first lower mold core 20 and the second lower mold core 21 are sequentially arranged on the left and right sides of the type groove 24. The second lower mold core 21 is movably arranged in the type groove 24, and the metal spring 10 is placed in the type groove 24, as shown in Figure 1 and 3 .

[0053] Specifically, the metal spring 10 includes an upper spring 11, a lower spring 12, and a bending part 13, as shown in Figure 7 .

[0054] In this embodiment, the upper spring 11 is placed on the first lower mold core 20, the lower spring 12 is placed on the second lower mold core 21, the first lower mold core 20 and the second lower mold core 21 are connected by the bending part 13, and the bending part 13 has a strong deformation reset ability, so that the metal spring 10 has a rebound function.

[0055] Further, the inside of the lower mold 2 and below the first lower mold core 20 are horizontally provided with a driving shaft 40, and the two ends of the driving shaft 40 are fixed to the inner wall of the lower mold 2 through a first bearing seat 41, as shown in Figure 8 and 9 .

[0056] Among them, the middle part of the driving shaft 40 is sleeved with a large gear 42, the oblique lower side of the large gear 42 is meshingly provided with a small gear 43, the small gear 43 is sleeved on the output shaft of a first servo motor 44, and the first servo motor 44 is horizontally fixed in the inside of the lower mold 2, as shown in Figure 8 and 9 .

[0057] Among them, the two ends of the driving shaft 40 extend outwardly from the first bearing seat 41 and are respectively provided with a forward threaded shaft part 45 and a reverse threaded shaft part 46, the surfaces of the forward threaded shaft part 45 and the reverse threaded shaft part 46 are uniformly provided with reverse different spiral threads, and the forward threaded shaft part 45 and the reverse threaded shaft part 46 are movably provided with a spring protector 8, as shown in Figures 7-9 .

[0058] Specifically, the spring protector 8 includes a bent arm 81, a nut sleeve 82, a rear clamping rod 83, a limiting port 84, a bandage 85, a movable groove 86, and a front clamping rod structure 9, as shown in Figure 10 .

[0059] In this embodiment, a receiving groove 18 for the movement of the bending arm 81 is provided on the inner wall of the groove 24, and the receiving groove 18 serves as a receiving guide, and the two are matched in size. A nut sleeve 82 is installed at the bottom of the bending arm 81 to act on the forward threaded shaft 45 and the reverse threaded shaft 46 (a nut with spiral motion is movably arranged in the nut sleeve 82), and the upper end of the bending arm 81 is fixedly connected to the rear clamping rod 83 at the rear position, and a clamping groove 17 for the horizontal movement of the rear clamping rod 83 is provided horizontally in the middle of the inner wall of the first lower mold core 20 (the cross-sectional size of the clamping groove 17 and the rear clamping rod 83 are matched, and the clamping groove 17 is connected to the two groups of receiving grooves 18), and the clamping groove 17 serves as a limiting guide.

[0060] In this embodiment, a movable groove 86 is provided at the front of the upper end of the bending arm 81, and a front clamping rod structure 9 is rotatably arranged in the movable groove 86. A limiting opening 84 acting on the bending portion 13 is formed between the rear clamping rod 83 and the front clamping rod structure 9. The width of the limiting opening 84 is adapted to the thickness of the bending portion 13. A bandage 85 connected to the rear clamping rod 83 and the front clamping rod structure 9 is provided in the limiting opening 84. The bandage 85 is elastic and plays a protective role. The bandage 85 acts on the edge of the bending portion 13.

[0061] Specifically, the front lever structure 9 includes a front lever 90, a rotating portion 91, an inner bearing 92, a fixed shaft 93, a baffle 94, a torsion spring 95 and a guide wheel 96. Figure 11 shown.

[0062] The cam 93 is fixed to the rear end of the cam 93 and the cam 93 is fixed to the rear end of the cam 93.

[0063] Furthermore, a first upper mold core 22 is welded at the middle position of the lower end surface of the upper mold 1, and the first upper mold core 22 corresponds to the first lower mold core 20. A second upper mold core 23 is movably provided on the lower end surface of the upper mold 1 and is located on the right side of the first upper mold core 22. An adjustment groove 16 for the movement of the second upper mold core 23 is provided on the lower end surface of the lower mold 2. The second upper mold core 23 corresponds to the second lower mold core 21. Figure 2As shown.

[0064] Wherein, the inside of the upper mold 1 is provided with an upper pitch adjusting structure 5 acting on the second upper mold core 23, the inside of the lower mold 2 is provided with a lower pitch adjusting structure 6 acting on the second lower mold core 21, the upper pitch adjusting structure 5 and the lower pitch adjusting structure 6 are symmetrically distributed up and down, and the structures are the same, as shown in Figures 1-3 As shown.

[0065] Specifically, the upper pitch adjusting structure 5 and the lower pitch adjusting structure 6 each include a hydraulic cylinder 30, the inside of the hydraulic cylinder 30 is outwardly movably provided with a telescopic rod 31, the end of the telescopic rod 31 is vertically welded with a square connecting seat 32 (cubic structure), the inside of the upper mold 1 and the lower mold 2 is each provided with a connecting groove for the up and down movement of the square connecting seat 32, the connecting groove plays a limiting and guiding role, the end of the square connecting seat 32 away from the telescopic rod 31 on the upper pitch adjusting structure 5 and the lower pitch adjusting structure 6 is respectively connected with the second upper mold core 23 and the second lower mold core 21, the lower pitch adjusting structure 6 drives the second lower mold core 21 to move up and down, and the upper pitch adjusting structure 5 drives the second upper mold core 23 to move up and down, as shown in Figure 4 As shown.

[0066] Wherein, the inside of the square connecting seat 32 near the center of gravity of the telescopic rod 31 is vertically installed with a linear cylinder 33, the inside of the linear cylinder 33 is outwardly movably provided with a cylinder rod 34, the end of the cylinder rod 34 is welded with a square displacement table 35, the inside of the square connecting seat 32 is provided with a linear groove for the up and down movement of the square displacement table 35, and the linear groove plays a limiting and guiding role, as shown in Figure 5 As shown.

[0067] Wherein, the four faces of the square displacement table 35 are each longitudinally symmetrically provided with a long slot 36, the bottom of the long slot 36 is provided with a climbing face 37, the climbing face 37 has a certain inclination, and each group of long slots 36 is installed with a wall grabbing structure 7, as shown in Figure 5 As shown.

[0068] Specifically, the wall grabbing structure 7 includes a sliding block 71, a veneer 72, a connecting column 73, a retaining sleeve 74, a return spring 75, a guide block 76 and a wall grabbing pressing sheet 77, as shown in Figure 6 As shown.

[0069] In this embodiment, the sliding block 71 is slidingly arranged in the long slot 36, the bottom of the sliding block 71 is provided with the veneer 72 matched with the climbing face 37, the surfaces of the two are smooth, the end of the sliding block 71 away from the veneer 72 is horizontally welded with the connecting column 73, the connecting column 73 is sleeved with the retaining sleeve 74 at the middle part, the end of the connecting column 73 away from the sliding block 71 is welded with the guide block 76, the middle positions of the four faces of the square connecting seat 32 are each provided with a second guide groove 38 for the movement of the guide block 76, and the second guide groove 38 plays a receiving and guiding role.

[0070] In this embodiment, a return spring 75 is fixed between the stop sleeve 74 and the end of the second guide groove 38 and is sleeved on the outside of the connecting column 73. The return spring 75 is used to maintain the contact force between the climbing surface 37 and the veneer 72. The end of the guide block 76 away from the connecting column 73 is welded with a wall-grabbing pressure piece 77 extending out of the second guide groove 38. The wall-grabbing pressure piece 77 is a curved spring steel sheet structure. The four groups of wall-grabbing pressure pieces 77 all act on the groove wall of the connecting groove, and the groove wall of the connecting groove is made of anti-slip material.

[0071] When using this embodiment, first, according to the size of the metal spring 10, the hydraulic cylinders 30 on the upper distance adjustment structure 5 and the lower distance adjustment structure 6 are respectively started to extend or retract the telescopic rod 31, and the two sets of square connecting seats 32 respectively drive the second upper mold core 23 and the second lower mold core 21 to move up and down (the second upper mold core 23 moves up and down in the adjustment groove 16 to change its position, and the second lower mold core 21 moves up and down in the groove 24 to change its position). After stopping the movement, the linear cylinder 33 is started again to extend the cylinder rod 34, driving the square displacement platform 35 to move up and down. As the square displacement platform 35 moves up and down in the linear groove, it causes the slider 71 and the long groove 36 of each set of wall-grabbing structures 7 to move relative to each other (the climbing surface 37 and the veneer 72 are fully fitted together). This generates a relative force that causes the wall-grabbing structure 7 to move outward in the horizontal direction. The guide block 76 drives the wall-grabbing pressing piece 77 to extend out of the second guide groove 38. The wall-grabbing pressing piece 77 directly contacts the groove wall of the connecting groove. The two generate an extrusion force that bends the wall-grabbing pressing piece 77, increasing the contact force and allowing the wall-grabbing pressing pieces 77 on the four sets of wall-grabbing structures 7 to fully grasp the arm.

[0072] Then the metal shrapnel 10 is placed into the groove 24, so that the bent part 13 and the side wall of the first lower mold core 20 are fitted together. At this time, the first servo motor 44 is started, the small gear 43 rotates, and the large gear 42 is driven to rotate through meshing deceleration, causing the drive shaft 40 to rotate around the first bearing seat 41. The two groups of shrapnel protectors 8 move toward each other along the forward threaded shaft 45 and the reverse threaded shaft 46 respectively (the nut sleeve 82 and the spiral pattern interact with each other), and the bending arms 81 extend from the receiving groove 18 respectively, and slowly approach the bent part 13. The rear clamping rods 83 on the two groups of shrapnel protectors 8 move toward each other along the clamping groove 17, so that the bent part 13 is in the limit opening 84, and is tightened by the two groups of bandages 85, so that the entire metal shrapnel 10 is positioned in the groove 24.

[0073] A stamping machine is used to drive the upper mold 1 and the lower mold 2 to close the mold, and the four groups of guide pillars 3 move along the first guide groove 4 respectively, so that the first lower mold core 20 and the first upper mold core 22 collide with each other at high pressure to stamp the upper spring piece 11 between the two and deform it. At the same time, the second lower mold core 21 and the second upper mold core 23 collide with each other at high pressure to stamp the lower spring piece 12 between the two and deform it.

[0074] During the stamping process, the upper spring piece 11 and the lower spring piece 12 will undergo structural changes due to the stamping, causing the middle curved portion 13 to be squeezed and undergo a certain degree of bending deformation. During the deformation process, the curved portion 13 exerts pressure on the front clamping rod 90 on the two groups of spring sheet protectors 8, causing the rotating portion 91 of the front clamping rod 90 to rotate around the fixed axis 93 after being compressed, and causing the torsion spring 95 to twist and deform. The front clamping rod 90 swings slightly from the movable groove 86 to the outside, thereby removing the instantaneous force on the curved portion 13 of the metal spring sheet 10, thereby achieving a protective effect. During the micro-swing process, the front clamping rod 90 strengthens the straightness of the bandage 85, thereby improving the limiting effect on the metal spring sheet 10. Example 2

[0075] On the basis of the first embodiment, the existing guide pillar 3 often uses a spring structure to buffer the guide pillar 3 during the movement, thereby reducing the shock of the entire mold group and reducing the reaction force generated by the stamping. However, the current spring structure will increase material fatigue after a long period of use, thereby reducing the buffering effect and requiring regular replacement, which is time-consuming and labor-intensive. In order to solve the above technical problems, we have the following design, such as Figures 12-16 shown.

[0076] Specifically, the lower end of each group of first guide grooves 4 is connected with a retaining groove 50, which is larger than the first guide groove 4. A round pressure block 51 is movably installed in the retaining groove 50, and the retaining groove 50 is used to limit the range of movement of the round pressure block 51. The round pressure block 51 is in contact with the lower end of the guide pillar 3, and the lower end of the round pressure block 51 is glued with a capsule column 52. The lower end of the capsule column 52 is connected with a spherical shock-absorbing airbag 53. The lower end of the retaining groove 50 is connected with a spherical extrusion groove 19. The spherical shock-absorbing airbag 53 is located in the spherical extrusion groove 19 (the spherical extrusion groove 19 is larger than the volume of the spherical shock-absorbing airbag 53). The spherical extrusion groove 19 serves to accommodate the spherical shock-absorbing airbag 53. The spherical shock-absorbing airbag 53 has a strong deformation restoration performance. Figure 12 and -14.

[0077] Among them, the lower end of the spherical shock-absorbing airbag 53 is connected to the positioning elbow 54, and the positioning elbow 54 is fixed inside the lower mold 2. The end of the positioning elbow 54 away from the spherical shock-absorbing airbag 53 is connected to the backup airbag 55. The spherical shock-absorbing airbag 53 and the backup airbag 55 are connected through the positioning elbow 54. The backup airbag 55 plays the role of air storage and has weak deformation restoration ability. Figure 14 shown.

[0078] Among them, the air bag 55 is set horizontally, and the tail of the air bag 55 is installed with a sealing splint 56 to play a sealing role. The sealing splint 56 is fixed inside the lower mold 2, and the upper end of the sealing splint 56 is welded with an L-shaped guide rod 57, as shown in FIG. Figure 14 shown.

[0079] Further, the L-shaped guide rod 57 is movably provided with a pressurizing device seat 60, which moves linearly along the L-shaped guide rod 57, as shown in Figures 13-15 .

[0080] In this embodiment, the inside of the pressurizing device seat 60 is provided with a moving rod slot 61 for the L-shaped guide rod 57 to pass through, and the two move relative to each other. The inside of the pressurizing device seat 60 is vertically symmetrically provided with two groups of rotating shafts 62, which are sleeved with second bearing seats 63, and the second bearing seats 63 are fixed to the inner wall of the pressurizing device seat 60, as shown in Figure 15 and 16 .

[0081] In this embodiment, the upper ends of the two groups of rotating shafts 62 are sleeved with connecting gears 64, which are engaged with each other. One of the groups of rotating shafts 62 is extended upward and connected to a second servo motor 65 through a shaft coupling, and the second servo motor 65 is arranged through the upper end surface of the pressurizing device seat 60, as shown in Figure 15 and 16 .

[0082] The lower ends of the two groups of rotating shafts 62 are welded with pressurizing sealing wheels 66, which extend downward out of the pressurizing device seat 60, and the two groups of pressurizing sealing wheels 66 act on the standby gas bag 55 (the two groups of pressurizing sealing wheels 66 press the standby gas bag 55), as shown in Figure 15 and 16 .

[0083] The lower ends of the two groups of pressurizing sealing wheels 66 are welded with short shafts 67, which are sleeved with walking gears 68. The inside of the lower mold 2 and below the standby gas bag 55 are fixed with a bottom plate 58, the upper ends of the two sides of the bottom plate 58 are symmetrically provided with toothed tracks 59, and the two groups of walking gears 68 respectively act on the toothed tracks 59, as shown in Figure 13 , 15 and 16.

[0084] In use, the four groups of guide pillars 3 will contact the circular pressing block 51 and produce a downward pressing action on the circular pressing block 51, so that the circular pressing block 51 moves linearly along the retaining edge slot 50, extrudes the capsule column 52, and pressurizes the air in the capsule column 52 into the spherical shock-absorbing air bag 53, so that the spherical shock-absorbing air bag 53 deforms (expands in the spherical extrusion slot 19), and the deformation force of the spherical shock-absorbing air bag 53 achieves the purpose of shock absorption and buffering.

[0085] As the spherical shock-absorbing airbag 53 is used more and more, the degree of deformation restoration of its material is weakened. At this time, the second servo motor 65 on the air compressor seat 60 is turned on to drive one of the sets of rotating shafts 62 to rotate, and through the meshing action of the two sets of connecting gears 64, the two sets of rotating shafts 62 are synchronously moved in opposite directions, so that the running gear 68 at the lower end moves forward along the gear track 59 respectively, driving the entire air compressor seat 60 to move linearly along the L-shaped guide rod 57. During the movement, the two sets of compressed air sealing wheels 66 roll forward at the position of the standby airbag 55, and slowly squeeze the air in the standby airbag 55 into the spherical shock-absorbing airbag 53 through the positioning elbow 54, gradually improving the buffering effect of the spherical shock-absorbing airbag 53, and sealing the standby airbag 55 at the contact position of the two sets of compressed air sealing wheels 66, achieving the dual effects of sealing and compressing air.

[0086] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0087] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A communication metal shrapnel automatic stamping die, comprising an upper die (1) and a lower die (2), characterized in that: The upper mold (1) is located directly above the lower mold (2), and four groups of first guide grooves (4) are evenly formed at the edge of the upper end surface of the lower mold (2). The lower end surface of the upper mold (1) is welded with guide pillars (3) respectively inserted into the four groups of first guide grooves (4). A mold groove (24) is formed at the middle position of the upper end surface of the lower mold (2), and a first lower mold core (20) and a second lower mold core (21) are sequentially distributed on the left and right sides of the mold groove (24), and the second lower mold core (21) is movably arranged in the mold groove (24); A metal spring (10) is placed in the groove (24), and the metal spring (10) includes an upper spring (11), a lower spring (12) and a bent portion (13). The upper spring (11) is placed on the first lower mold core (20), and the lower spring (12) is placed on the second lower mold core (21). The first lower mold core (20) and the second lower mold core (21) are connected by the bent portion (13). A drive shaft (40) is horizontally arranged inside the lower mold (2) and below the first lower mold core (20). Both ends of the drive shaft (40) are fixed by the first bearing seat (41) and the inner wall of the lower mold (2). A first upper mold core (22) is welded at the middle position of the lower end surface of the upper mold (1), and the first upper mold core (22) corresponds to the first lower mold core (20). A second upper mold core (23) is movably provided on the lower end surface of the upper mold (1) and located on the right side of the first upper mold core (22), and the second upper mold core (23) corresponds to the second lower mold core (21). An upper distance adjustment structure (5) acting on the second upper mold core (23) is provided inside the upper mold (1), and a lower distance adjustment structure (6) acting on the second lower mold core (21) is provided inside the lower mold (2). The upper distance adjustment structure (5) and the lower distance adjustment structure (6) are provided inside the lower mold (2). The structure (6) is symmetrically distributed up and down and has the same structure. The upper distance adjustment structure (5) and the lower distance adjustment structure (6) both include a hydraulic cylinder (30). A telescopic rod (31) is provided inside the hydraulic cylinder (30) for outward movement. A square connecting seat (32) is vertically welded to the end of the telescopic rod (31). Connecting grooves for the square connecting seat (32) to move up and down are provided inside the upper mold (1) and the lower mold (2). The ends of the square connecting seats (32) on the upper distance adjustment structure (5) and the lower distance adjustment structure (6) away from the telescopic rod (31) are respectively connected to the second upper mold core (23) and the second lower mold core (21).

2. The communication metal dome automatic stamping die according to claim 1, characterized in that: A linear cylinder (33) is vertically installed inside the square connecting seat (32) near the telescopic rod (31), and a cylinder rod (34) is movably provided inside the linear cylinder (33) to extend outward. A square displacement platform (35) is welded to the end of the cylinder rod (34), and four surfaces of the square displacement platform (35) are longitudinally symmetrically provided with long grooves (36). The bottom of the long grooves (36) is provided with a climbing surface (37), and each group of the long grooves (36) is provided with a wall grabbing structure (7).

3. The communication metal dome automatic stamping die according to claim 2, characterized in that: The wall-grabbing structure (7) includes a slider (71), a veneer (72), a connecting column (73), a stopper (74), a return spring (75), a guide block (76) and a wall-grabbing pressing piece (77). The slider (71) is slidably arranged in the long groove (36). The bottom of the slider (71) is provided with a veneer (72) adapted to the climbing surface (37). The end of the slider (71) away from the veneer (72) is horizontally welded with a connecting column (73). The middle part of the connecting column (73) is sleeved with a stopper (74). The end of the connecting column (73) away from the slider (71) is horizontally welded with a stopper (74). A guide block (76) is welded to the end, and a second guide groove (38) for the guide block (76) to move is opened at the middle position of the four surfaces of the square connecting seat (32). A return spring (75) is fixed between the stop sleeve (74) and the end of the second guide groove (38) and is sleeved on the outside of the connecting column (73). A wall-grabbing pressure piece (77) extending out of the second guide groove (38) is welded to the end of the guide block (76) away from the connecting column (73). The wall-grabbing pressure piece (77) is a curved spring steel sheet structure. Four groups of the wall-grabbing pressure pieces (77) all act on the groove wall of the connecting groove.

4. The communication metal dome automatic stamping die according to claim 1, characterized in that: A large gear (42) is sleeved on the middle part of the driving shaft (40), and a small gear (43) is meshed on the oblique lower side of the large gear (42). The small gear (43) is sleeved on the output shaft of the first servo motor (44). The first servo motor (44) is horizontally fixed inside the lower mold (2). Both ends of the driving shaft (40) extend outward from the first bearing seat (41) and are respectively provided with a forward threaded shaft portion (45) and a reverse threaded shaft portion (46). Shrapnel protectors (8) are movably provided on the forward threaded shaft portion (45) and the reverse threaded shaft portion (46).

5. The communication metal dome automatic stamping die according to claim 4, characterized in that: The shrapnel protector (8) comprises a bending arm (81), a nut sleeve (82), a rear clamping rod (83), a limit opening (84), a bandage (85), a movable groove (86) and a front clamping rod structure (9). A receiving groove (18) for the bending arm (81) to move is provided on the inner wall of the groove (24). A nut sleeve (82) acting on the forward threaded shaft (45) and the reverse threaded shaft (46) is installed at the bottom of the bending arm (81). The rear end of the bending arm (81) is fixedly connected to the rear clamping rod (83). The first lower mold core (2 A slot (17) for the horizontal movement of the rear clamping rod (83) is horizontally opened in the middle of the inner wall of the bending arm (81), a movable slot (86) is opened at the front of the upper end of the bending arm (81), a front clamping rod structure (9) is rotatably arranged in the movable slot (86), a limiting opening (84) acting on the bending portion (13) is formed between the rear clamping rod (83) and the front clamping rod structure (9), a bandage (85) connected to the rear clamping rod (83) and the front clamping rod structure (9) is arranged in the limiting opening (84), and the bandage (85) acts on the edge position of the bending portion (13).

6. The communication metal dome automatic stamping die according to claim 5, characterized in that: The front card rod structure (9) includes a front card rod (90), a rotating part (91), an inner bearing (92), a fixed shaft (93), a baffle (94), a torsion spring (95) and a guide wheel (96). A portion of the front card rod (90) is located in the movable groove (86). The front card rod (90) is parallel to the rear card rod (83) in a natural state. The end of the front card rod (90) located in the movable groove (86) is provided with a rotating part (91). The inner bearing (92) is installed in the rotating part (91). The inner bearing (92) ) is sleeved on the outside of the fixed shaft (93), the fixed shaft (93) passes through the rotating part (91), the upper and lower parts of the fixed shaft (93) are fixed by the baffle (94) and the inner wall of the bending arm (81), and the area where the fixed shaft (93) extends out of the rotating part (91) is symmetrically sleeved with two groups of torsion springs (95), one end of the torsion spring (95) is fixed to the rotating part (91), and the other end of the torsion spring (95) is fixed to the groove wall of the movable groove (86), and a guide wheel (96) is installed on the inner side surface of the front clamping rod (90).

7. The communication metal dome automatic stamping die according to claim 1, characterized in that: The lower end of each group of the first guide grooves (4) is connected to a side guard groove (50), the side guard groove (50) is larger than the first guide groove (4), a round pressure block (51) is movably installed in the side guard groove (50), the round pressure block (51) is in contact with the lower end of the guide pillar (3), the lower end of the round pressure block (51) is glued with a capsule column (52), the lower end of the capsule column (52) is connected to a spherical shock-absorbing airbag (53), the lower end of the side guard groove (50) is connected to a spherical extrusion groove (19), and the spherical shock-absorbing airbag (53) is located in the spherical extrusion groove (19).

8. The communication metal dome automatic stamping die according to claim 7, characterized in that: The lower end of the spherical shock-absorbing airbag (53) is connected to a positioning elbow (54), and the positioning elbow (54) is fixed inside the lower mold (2). The end of the positioning elbow (54) away from the spherical shock-absorbing airbag (53) is connected to a backup airbag (55), and the backup airbag (55) is arranged horizontally. A sealing splint (56) is installed at the tail of the backup airbag (55), and the sealing splint (56) is fixed inside the lower mold (2). The upper end of the sealing splint (56) is welded with an L-shaped guide rod (57).

9. The communication metal dome automatic stamping die according to claim 8, characterized in that: A compressed air device seat (60) is movably provided on the L-shaped guide rod (57), and a movable rod groove (61) for the L-shaped guide rod (57) to pass through is provided horizontally through the interior of the compressed air device seat (60), and two groups of rotating shafts (62) are vertically symmetrically installed inside the compressed air device seat (60), and the rotating shaft (62) is outer-connected with a second bearing seat (63), and the second bearing seat (63) and the inner wall of the compressed air device seat (60) are fixed, and the upper ends of the two groups of the rotating shafts (62) are both sleeved with connecting gears (64), and the two groups of the connecting gears (64) are meshed with each other, and one group of the rotating shafts (62) extends upward and is connected to the second servo motor (65) through a coupling, and the second servo motor (65) is set through the upper end surface of the compressed air device seat (60).

10. The communication metal dome automatic stamping die according to claim 9, characterized in that: The lower ends of the two groups of rotating shafts (62) are welded with compressed air sealing wheels (66), and the compressed air sealing wheels (66) extend downward from the compressed air device seat (60). The two groups of compressed air sealing wheels (66) act on the air bag (55). The lower ends of the two groups of compressed air sealing wheels (66) are welded with short shafts (67), and the short shafts (67) are sleeved with running gears (68). A bottom plate (58) is fixed inside the lower mold (2) and directly below the air bag (55). Gear tracks (59) are symmetrically provided on both sides of the upper end of the bottom plate (58), and the two groups of running gears (68) act on the gear tracks (59) respectively.

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