An automated stamping die for communication metal shrapnel

Abstract

The present invention relates to the technical field of molds for intelligent manufacturing equipment, and discloses an automatic stamping mold for communication metal shrapnel. The upper mold is located directly above the lower mold. Four groups of guide grooves are evenly formed at the edge of the upper end surface of the lower mold. Guide posts inserted into the four groups of guide grooves are welded to the lower end surface of the upper mold. A mold cavity is formed at the middle position of the upper end surface of the lower mold. A first lower die core and a second lower die core are sequentially distributed from left to right in the mold cavity. The second lower die core is movably arranged in the mold cavity. For the automatic stamping mold for communication metal shrapnel of the present invention, when the square displacement table moves, the sliders and the long slots of each group of wall-gripping structures move relative to each other, generating a relative acting force that causes the wall-gripping structures to move outward in the horizontal direction. The wall-gripping pressing piece and the wall of the connecting groove generate an extrusion acting force to bend the wall-gripping pressing piece, enabling the wall-gripping pressing pieces on the four groups of wall-gripping structures to fully grip the arms, ensuring the firmness of the positioning of the moving 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 automatic stamping mold for communication metal springs. Background Art

[0002] Metal shrapnel is an elastic sheet-like element, usually made of metal materials (such as stainless steel, beryllium copper, spring steel, etc.). It can deform when subjected to external force and quickly return to its original shape after the external force is removed. This characteristic makes metal shrapnel play an important role in communication equipment, especially in electronic components such as membrane switches, contact switches, PCB boards and FPC boards. It has the advantages of high elasticity, excellent conductivity, low contact resistance and corrosion resistance. Metal shrapnel needs to be stamped during the production process to improve the local structural strength and flatness of the metal shrapnel and extend the service life of the material, so a stamping die set is 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 using dies separately, 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 mold 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 shock to 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] To sum up, 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 a communication metal spring automatic stamping die, 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: 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 guide grooves are evenly arranged at the edge of the upper end face of the lower die, and guide pillars respectively inserted into the four groups of guide grooves are welded to the lower end face of the upper die, and a molding groove is arranged at the middle position of the upper end face of the lower die, and a first lower mold core and a second lower mold core are sequentially distributed on the left and right sides of the molding groove, and the second lower mold core is movably arranged in the molding groove.

[0007] As a preferred solution of the communication metal spring automated stamping die described in the present invention, a metal spring is placed in the mold groove, and the metal spring includes an upper spring, a lower spring and a bent portion, the upper spring is placed on the first lower mold core, and the lower spring is placed on the second lower mold core, and the first lower mold core and the second lower mold core are connected by a bent portion.

[0008] As a preferred solution of the communication metal spring 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 both ends of the drive shaft are fixed by the first bearing seat and the inner wall of the lower die.

[0009] As a preferred solution of the communication metal spring automatic stamping die described in the present invention, wherein: a first upper mold core is welded at the middle position of the lower end surface of the upper mold, the first upper mold core corresponds to the first lower mold core, the lower end surface of the upper mold is located on the right side of the first upper mold core and a second upper mold core is movably arranged, the second upper mold core corresponds to the second lower mold core, an upper distance adjustment structure acting on the second upper mold core is arranged inside the upper mold, and a lower distance adjustment structure acting on the second lower mold core is arranged inside the lower mold, the upper distance adjustment structure and the lower distance adjustment structure are symmetrical parts and have the same structure.

[0010] As a preferred solution of the communication metal spring automatic stamping die described in the present invention, the upper distance adjusting structure and the lower distance adjusting structure both include a hydraulic cylinder, a telescopic rod is arranged inside the hydraulic cylinder to move outward, a square connecting seat is vertically welded to the end of the telescopic rod, and connecting grooves for the square connecting seat to move up and down are provided inside the upper mold and the lower mold, and the ends of the square connecting seats on the upper distance adjusting structure and the lower distance adjusting structure away from the telescopic rod are respectively connected to the second upper mold core and the second lower mold core.

[0011] As a preferred solution of the communication metal dome automatic stamping die described in the present invention, a linear cylinder is vertically installed inside the square connecting seat near the telescopic rod, a cylinder rod is movably arranged inside the linear cylinder extending outward, a square displacement table is welded to the end of the cylinder rod, and long grooves are longitudinally symmetrically opened on four sides of the square displacement table, the number of the long grooves is 4 groups, a climbing surface is arranged at the bottom of the long grooves, a wall grabbing structure is installed in each group of the long grooves, and the number of the wall grabbing structures is 4 groups.

[0012] As a preferred solution of the automatic stamping die for communication metal springs 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 pressing sheet, the slider is slidably arranged in a long groove, the bottom of the slider is provided with a veneer matched with the climbing surface, the end of the slider away from the veneer is horizontally welded with a connecting column, the middle part of the connecting column is sleeved with a stop sleeve, the end of the connecting column away from the slider is welded with a guide block, guide grooves for the movement of the guide block are provided in the middle positions of the four surfaces of the square connecting seat, a return spring sleeved outside the connecting column is fixed between the end of the stop sleeve and the guide groove, the end of the guide block away from the connecting column is welded with a wall grabbing pressing sheet extending out of the guide groove, the wall grabbing pressing sheet is a curved spring steel sheet structure, and the four groups of wall grabbing pressing sheets all act on the groove wall of the connecting groove.

[0013] As a preferred solution of the communication metal spring 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, the small gear is sleeved on the output shaft of the first servo motor, the first servo motor is horizontally fixed inside the lower die, 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 spring protectors are movably provided on the forward threaded shaft portion and the reverse threaded shaft portion, and the number of the spring protectors is 2 groups.

[0014] As a preferred solution of the automatic stamping die for communication metal springs described in the present invention, the spring protector comprises a bending arm, a nut sleeve, a rear clamping rod, a limiting opening, a bandage, a movable groove and a front clamping rod structure; a receiving groove for the movement of the bending arm is provided on the inner wall of the groove; a nut sleeve acting on the forward threaded shaft and the reverse threaded shaft is installed at the bottom of the bending arm; a rear clamping rod is fixedly connected to the upper end of the bending arm at a rear position; a clamping groove for the horizontal movement of the rear clamping rod is horizontally provided in the middle of the inner wall of the first lower mold core; a movable groove is provided at the front end of the upper end of the bending arm; a front clamping rod structure is rotatably arranged in the movable groove; a limiting opening acting 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 arranged in the limiting opening, and the bandage acts on the edge position of the bending part.

[0015] 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, 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.

[0016] As a preferred solution of the automatic stamping die for communication metal springs described in the present invention, wherein: the lower end of each group of the guide grooves is connected with a side guard groove, the side guard groove is larger than the guide groove, a round pressure block is movably installed in the side guard groove, the round pressure block is in contact with the lower end of the guide pillar, the lower end of the round 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.

[0017] As a preferred solution of the communication metal dome automated stamping die described in the present invention, the lower end of the spherical shock-absorbing airbag is connected to a positioning elbow, the positioning elbow is fixed inside the lower mold, the end of the positioning elbow away from the spherical shock-absorbing airbag is connected to a backup airbag, the backup airbag is horizontally arranged, 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.

[0018] As a preferred solution of the communication metal dome automatic stamping die described in the present invention, wherein: a pneumatic device seat is movably arranged on the L-shaped guide rod, and a movable rod groove for the L-shaped guide rod to pass through is horizontally penetrated inside the pneumatic device seat, and two groups of rotating shafts are vertically and symmetrically installed inside the pneumatic device 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 pneumatic device 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 pneumatic device seat.

[0019] As a preferred solution of the communication metal dome automated stamping die described in the present invention, wherein: the lower ends of the two groups of the rotating shafts are welded with compressed air sealing wheels, 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, the lower ends of the two groups of the compressed air sealing wheels are welded with short shafts, and the short shafts are sleeved with traveling gears, the interior of the lower mold is fixed with a bottom plate directly below the standby airbag, the upper ends of the bottom plate are symmetrically provided with toothed tracks, and the two groups of traveling gears act on the toothed tracks respectively.

[0020] 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.

[0021] 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 is connected to the two groups of storage slots.

[0022] 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.

[0023] As a preferred solution of the automatic stamping die for metal domes for communications described in the present invention, the spherical shock-absorbing airbag and the air reserve airbag are connected via a positioning elbow.

[0024] As a preferred solution of the communication metal dome automatic stamping die described in the present invention, the air pressure device seat moves linearly along the air pressure device seat.

[0025] As a preferred solution of the automatic stamping die for communication metal domes described in the present invention, two groups of compressed air sealing wheels press and hold the spare airbag.

[0026] The present invention provides a communication metal spring automatic stamping die through improvement, which has the following significant improvements and advantages compared with the prior art: The hydraulic cylinders on the upper and lower 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. By changing the position of the mold core, it can adapt to the stamping of metal springs of different sizes, solve the problem of mold core prefabrication, and is a one-time stamping without two times, saving time and effort.

[0027] Start the linear cylinder to extend the cylinder rod, driving the square displacement table to move. When the square displacement table moves, the slider and the long groove 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 pressing piece to extend out of the guide groove. The wall grabbing pressing piece and the groove wall of the connecting groove generate an extrusion force to bend the wall grabbing pressing piece, increasing the contact force, allowing the wall grabbing pressing pieces on the four sets of wall grabbing structures to fully grasp the arm, ensuring the firmness of the positioning of the movable mold core, and avoiding damage caused by excessive reaction force on the cylinder.

[0028] Start the first servo motor, and after a series of transmissions, the two groups 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 groups of shrapnel protectors move toward each other along the clamping slots, so that the bending part is in the limit opening and is tightened by the two groups 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.

[0029] During the deformation process, the bent part generates 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 buffer 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.

[0030] 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 pressure-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

[0031] Figure 1 This is a schematic diagram of the overall structure of an automated stamping die for metal springs for communication according to the present invention; Figure 2 It is a schematic diagram of the bottom structure of the upper mold of the present invention; Figure 3 It is a schematic diagram of the internal structure of the groove of the present invention; Figure 4 It is a schematic diagram of the specific structure of the upper distance adjustment structure and the lower distance adjustment structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the square connecting seat of the present invention; Figure 6 It is a specific structural schematic diagram of the wall grasping structure of the present invention; Figure 7It is a schematic diagram of the connection between the metal spring and the spring protector of the present invention; Figure 8 It is a schematic diagram of the external structure of the drive shaft of the present invention; Fig. 9 It is a schematic diagram of the transmission structure of the drive shaft of the present invention; Fig.10 It is a schematic diagram of the specific structure of the shrapnel protector of the present invention; Fig.11 It is a schematic diagram of the specific structure of the front clamping rod structure of the present invention; Fig.12 is a cross-sectional view of the guide groove of the present invention; Fig.13 It is a schematic diagram of the lower end structure of the guide groove of the present invention; Fig.14 It is a schematic diagram of the connection structure of the spherical shock-absorbing airbag of the present invention; Fig.15 It is a schematic diagram of the external structure of the air compression device seat of the present invention; Fig.16 It is a schematic diagram of the internal structure of the air compression device seat of the present invention.

[0032] In the figure: 1. upper mold; 2. lower mold; 3. guide pillar; 4. 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 sleeve; 75. reset spring; 76. guide block; 77. wall-grabbing pressure piece; 8. shrapnel protector; 81. bending arm; 82. nut sleeve; 83. rear clamping rod; 84. limit opening; 85. bandage; 86. movable slot; 9, front clamping rod structure; 90, front clamping rod; 91, rotating part; 92, inner bearing; 93, fixed shaft; 94, baffle; 95, torsion spring; 96, guide wheel; 10, metal spring; 11, upper spring; 12, lower spring; 13, bending part; 16, adjustment slot; 17, clamping 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 displacement table; 36, long groove; 37, climbing surface; 38, guide groove; 40, drive shaft; 41, first bearing seat; 42, large gear; 43, small gear; 44, first servo motor; 45, positive thread shaft; 46, reverse thread shaft; 50, retaining edge Groove; 51, round pressure block; 52, capsule column; 53, spherical shock-absorbing airbag; 54, spherical extrusion groove; 55, air-prepared airbag; 56, sealing splint; 57, L-shaped guide rod; 58, bottom plate; 59, gear 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, walking gear. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. Embodiment 1

[0034] like Figure 1-11 As shown, this embodiment provides an automated stamping die for metal springs for communications, comprising an upper die 1 and a lower die 2, wherein the upper die 1 is located directly above the lower die 2, and four groups of guide grooves 4 are evenly arranged at the edge of the upper end surface of the lower die 2, and guide pillars 3 are welded to the lower end surface of the upper die 1 and are respectively inserted into the four groups of guide grooves 4, thereby playing a role of guiding and limiting.

[0035] Furthermore, a groove 24 is provided at the middle position of the upper end surface of the lower mold 2, and the first lower mold core 20 and the second lower mold core 21 are sequentially distributed on the left and right sides of the groove 24. The second lower mold core 21 is movably arranged in the groove 24, and a metal spring 10 is placed in the groove 24. Figure 1 and 3 shown.

[0036] Specifically, the metal spring 10 includes an upper spring 11, a lower spring 12 and a bent portion 13. Figure 7 shown.

[0037] In this embodiment, the upper spring sheet 11 is placed on the first lower mold core 20, and the lower spring sheet 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 a bending portion 13. The bending portion 13 has a strong deformation restoration ability, allowing the metal spring sheet 10 to have a rebound function.

[0038] Furthermore, 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 a first bearing seat 41 and the inner wall of the lower mold 2. Figure 8 and 9 shown.

[0039] Among them, a large gear 42 is sleeved in the middle 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, and the first servo motor 44 is horizontally fixed inside the lower mold 2, such as Figure 8 and 9 shown.

[0040] The two ends of the drive 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. The surfaces of the forward threaded shaft portion 45 and the reverse threaded shaft portion 46 are evenly distributed with spiral patterns of different reverse directions. The forward threaded shaft portion 45 and the reverse threaded shaft portion 46 are movably provided with a spring protector 8, such as Figure 7-9 shown.

[0041] Specifically, the shrapnel protector 8 includes 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, as shown in FIG. Fig.10 shown.

[0042] 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. The two are matched in size, and a nut sleeve 82 (a nut with spiral motion is movably arranged in the 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. The upper end of the bending arm 81 is fixedly connected to a 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 sizes 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.

[0043] In this embodiment, a movable groove 86 is opened 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 arranged 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.

[0044] 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. Fig.11 shown.

[0045] The front card rod 90 is partially located in the movable groove 86. The front card rod 90 is parallel to the rear card rod 83 in the natural state. The end of the front card rod 90 located in the movable groove 86 is provided with a rotating portion 91. An inner bearing 92 is installed in the rotating portion 91. The inner bearing 92 is sleeved on the outer side of the fixed shaft 93. The fixed shaft 93 passes through the rotating portion 91. The rotating portion 91 rotates around the fixed shaft 93. The upper and lower parts of the fixed shaft 93 are fixed by baffles 94 and the inner wall of the bending arm 81. The baffles 94 play the role of limiting connection. The area where the fixed shaft 93 extends out of the rotating portion 91 is symmetrically sleeved with two groups of torsion springs 95. The torsion springs 95 have strong torsion force to limit the movement of the front card rod 90. One end of the torsion spring 95 is fixed to the rotating portion 91, and the other end of the torsion spring 95 is fixed to the groove wall of the movable groove 86. A guide wheel 96 is installed on the inner side of the front card rod 90. The guide wheel 96 plays the role of guiding sliding to reduce the friction resistance between the bending portion 13 and the front card rod 90.

[0046] Further, 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. An adjustment groove 16 for 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 2shown.

[0047] Among them, the upper mold 1 is provided with an upper distance adjustment structure 5 acting on the second upper mold core 23, and the lower mold 2 is provided with a lower distance adjustment structure 6 acting on the second lower mold core 21. The upper distance adjustment structure 5 and the lower distance adjustment structure 6 are symmetrically distributed up and down and have the same structure. Figure 1-3 shown.

[0048] Specifically, the upper distance adjustment structure 5 and the lower distance adjustment structure 6 both include a hydraulic cylinder 30, a telescopic rod 31 is movably arranged inside the hydraulic cylinder 30, a square connecting seat 32 (cube structure) is vertically welded to the end of the telescopic rod 31, and a connecting groove for the square connecting seat 32 to move up and down is provided inside the upper mold 1 and the lower mold 2, and the connecting groove plays a role of limiting guide, and 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, the lower distance adjustment structure 6 drives the second lower mold core 21 to move up and down, and the upper distance adjustment structure 5 drives the second upper mold core 23 to move up and down, as shown in FIG. Figure 4 shown.

[0049] A linear cylinder 33 is vertically installed inside the square connection seat 32 near the center of gravity of the telescopic rod 31. A cylinder rod 34 is movably arranged inside the linear cylinder 33 to extend outward. A square displacement platform 35 is welded to the end of the cylinder rod 34. A linear groove is provided in the middle of the square connection seat 32 for the square displacement platform 35 to move up and down. The linear groove plays a role of limiting guide. Figure 5 shown.

[0050] The four sides 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, the climbing surface 37 has a certain slope, and each group of long grooves 36 is installed with a wall grasping structure 7, such as Figure 5 shown.

[0051] Specifically, the wall-grabbing structure 7 includes a slider 71, a facing 72, a connecting column 73, a stopper sleeve 74, a return spring 75, a guide block 76 and a wall-grabbing pressing sheet 77. Figure 6 shown.

[0052] In this embodiment, the slider 71 is slidably arranged in the long groove 36, and the bottom of the slider 71 is provided with a veneer 72 that is compatible with the climbing surface 37, and both surfaces are smooth. A connecting column 73 is horizontally welded to the end of the slider 71 away from the veneer 72, and a stopper sleeve 74 is sleeved in the middle of the connecting column 73. A guide block 76 is welded to the end of the connecting column 73 away from the slider 71, and guide grooves 38 for the guide block 76 to move are provided in the middle positions of the four surfaces of the square connecting seat 32, and the guide grooves 38 serve as a storage guide.

[0053] In this embodiment, a return spring 75 is fixed between the end of the stop sleeve 74 and the 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. A wall grabbing pressure piece 77 extending out of the guide groove 38 is welded at one 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 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.

[0054] When the present embodiment is used, the hydraulic cylinders 30 on the upper distance adjustment structure 5 and the lower distance adjustment structure 6 are respectively started according to the size of the metal spring sheet 10, so that the telescopic rod 31 is extended or retracted, 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 mold groove 24 to change its position), and then the linear cylinder 33 is started after the movement stops, so that the cylinder rod 34 is extended, and the square displacement table 35 is driven. When moving up and down in the linear groove, the square displacement table 35 causes the slider 71 and the long groove 36 of each group of wall grabbing structures 7 to move relative to each other (the climbing surface 37 and the veneer 72 are fully fitted), and a relative force is generated to cause 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 guide groove 38. The wall grabbing pressing piece 77 directly contacts the groove wall of the connecting groove. The two generate an extrusion force to bend the wall grabbing pressing piece 77, thereby increasing the contact force and allowing the wall grabbing pressing pieces 77 on the four groups of wall grabbing structures 7 to fully grasp the arm.

[0055] Then put the metal spring piece 10 into the groove 24, let the bending part 13 and the side wall of the first lower mold core 20 fit together, then start the first servo motor 44, the small gear 43 rotates, and drives the large gear 42 to rotate through meshing reduction, causing the drive shaft 40 to rotate around the first bearing seat 41, and the two groups of spring sheet 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 grooves 18 respectively, and slowly approach the bending part 13, and the rear clamping rods 83 on the two groups of spring sheet protectors 8 move toward each other along the clamping grooves 17, so that the bending part 13 is in the limit opening 84, and is tightened by the two groups of bandages 85, so that the entire metal spring sheet 10 is positioned in the groove 24.

[0056] The upper mold 1 and the lower mold 2 are driven to close by a stamping machine, and the four groups of guide pillars 3 move along the guide grooves 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 therebetween to deform it, and 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 therebetween to deform it.

[0057] During the stamping process, the upper spring sheet 11 and the lower spring sheet 12 will undergo structural changes due to 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, so that the rotating portion 91 of the front clamping rod 90 rotates around the fixed axis 93 after being compressed, and the torsion spring 95 is twisted and deformed. 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-swinging process, the front clamping rod 90 strengthens the straightness of the bandage 85 and improves the limiting effect on the metal spring sheet 10. Embodiment 2

[0058] On the basis of the first embodiment, the existing guide pillar 3 is mostly buffered by a spring structure during the movement, so as to reduce the shock of the entire die set and reduce the reaction force generated by stamping. However, the current spring structure will increase material fatigue after long-term use, thereby reducing the buffering effect and needs to be replaced regularly, which is time-consuming and labor-intensive. In order to solve the above technical problems, we have the following design, such as Figure 12-16 shown.

[0059] Specifically, the lower end of each group of guide grooves 4 is connected with a retaining groove 50, which is larger than the 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 a capsule column 52 is glued to the lower end of the round pressure block 51. 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, and 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, such as Fig.12 and -14.

[0060] The lower end of the spherical shock-absorbing airbag 53 is connected to a positioning elbow 54, which 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 reserve airbag 55. The spherical shock-absorbing airbag 53 and the reserve airbag 55 are connected through the positioning elbow 54. The reserve airbag 55 plays a role of storing air, and its deformation restoration ability is weak. Fig.14 shown.

[0061] The air bag 55 is arranged horizontally, and a sealing clamp 56 is installed at the tail of the air bag 55 to play a sealing role. The sealing clamp 56 is fixed inside the lower mold 2, and an L-shaped guide rod 57 is welded on the upper end of the sealing clamp 56. Fig.14 shown.

[0062] Furthermore, a compressed air device seat 60 is movably disposed on the L-shaped guide rod 57, and the compressed air device seat 60 moves linearly along the L-shaped guide rod 57. Figure 13-15 shown.

[0063] In this embodiment, a movable rod groove 61 is horizontally formed inside the air compressor seat 60 for the L-shaped guide rod 57 to pass through, and the two move relative to each other. Two sets of rotating shafts 62 are vertically and symmetrically installed inside the air compressor seat 60. The rotating shafts 62 are connected to the outer sleeves of the second bearing seats 63. The second bearing seats 63 are fixed to the inner wall of the air compressor seat 60. Fig.15 and 16 shown.

[0064] In this embodiment, the upper ends of the two sets of rotating shafts 62 are sleeved with connecting gears 64, and the two sets of connecting gears 64 are meshed with each other. One set of rotating shafts 62 extends upward and is connected to the second servo motor 65 through a coupling. The second servo motor 65 is arranged through the upper end surface of the air compressor seat 60. Fig.15 and 16 shown.

[0065] The lower ends of the two sets of rotating shafts 62 are welded with compressed air sealing wheels 66, which extend downward out of the compressed air device seat 60. The two sets of compressed air sealing wheels 66 act on the reserve airbag 55 (the two sets of compressed air sealing wheels 66 press and hold the reserve airbag 55). Fig.15 and 16 shown.

[0066] The lower ends of the two sets 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. The upper ends of the bottom plate 58 are symmetrically provided with toothed tracks 59. The two sets of running gears 68 interact with the toothed tracks 59 respectively. Fig.13 , 15 and 16.

[0067] When this embodiment is in use, during the process of the four groups of guide pillars 3 guiding downward, they will respectively contact the round pressure block 51, exert a downward pressure on the round pressure block 51, so that the round pressure block 51 moves linearly along the retaining groove 50, squeezes the capsule column 52, and presses the air in the capsule column 52 into the spherical shock-absorbing airbag 53, so that the spherical shock-absorbing airbag 53 is deformed (expanded in the spherical extrusion groove 19), and the deformation force of the spherical shock-absorbing airbag 53 is used to achieve the purpose of shock absorption and buffering.

[0068] As the spherical shock-absorbing airbag 53 is used more and more times, 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 group of rotating shafts 62 to rotate, and through the meshing action of the two groups of connecting gears 64, the two groups of rotating shafts 62 are synchronously moved in opposite directions, so that the running gears 68 at the lower end move 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 groups of compressed air sealing wheels 66 roll forward at the position of the standby airbag 55, and the air in the standby airbag 55 is slowly squeezed 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 the standby airbag 55 is sealed at the contact position of the two groups of compressed air sealing wheels 66, so as to achieve the dual effects of sealing and compressing air.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A communication metal dome 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), four groups of guide grooves (4) are evenly arranged 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 guide grooves (4), a mold groove (24) is arranged at the middle position of the upper end surface of the lower mold (2), a first lower mold core (20) and a second lower mold core (21) are sequentially arranged on the left and right 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), the metal spring (10) comprising an upper spring (11), a lower spring (12) and a bent portion (13), the upper spring (11) being placed on a first lower mold core (20), the lower spring (12) being placed on a second lower mold core (21), the first lower mold core (20) and the second lower mold core (21) being connected by the bent portion (13), a drive shaft (40) being horizontally arranged inside the lower mold (2) and below the first lower mold core (20), the two ends of the drive shaft (40) being fixed by a first bearing seat (41) and an 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 arranged 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 arranged inside the upper mold (1), and a lower distance adjustment structure (6) acting on the second lower mold core (21) is arranged inside the lower mold (2), and the upper distance adjustment structure (5) and the lower distance adjustment structure (6) are arranged inside the lower mold (2). The structures (6) are symmetrically distributed up and down and have the same structure. The upper distance adjustment structure (5) and the lower distance adjustment structure (6) both comprise a hydraulic cylinder (30). A telescopic rod (31) is movably arranged inside the hydraulic cylinder (30) and outwardly arranged. A square connecting seat (32) is vertically welded to the end of the telescopic rod (31). A connecting groove for the square connecting seat (32) to move up and down is 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 a second upper mold core (23) and a second lower mold core (21).

2. According to claim 1, a communication metal dome automatic stamping die is characterized by: A linear cylinder (33) is vertically installed inside the square connection seat (32) near the telescopic rod (31), 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), 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) comprises a slider (71), a veneer (72), a connecting column (73), a stopper sleeve (74), a return spring (75), a guide block (76) and a wall-grabbing pressing sheet (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); a connecting column (73) is horizontally welded at one end of the slider (71) away from the veneer (72); a stopper sleeve (74) is sleeved at the middle of the connecting column (73); the connecting column (73) is away from the slider (71) and the stopper sleeve (74) is sleeved at the middle of the connecting column (73); ) is welded with a guide block (76) at one end, and guide grooves (38) for the guide block (76) to move are provided at the middle positions of the four surfaces of the square connecting seat (32). A return spring (75) sleeved on the outside of the connecting column (73) is fixed between the stop sleeve (74) and the end of the guide groove (48). A wall grabbing pressing piece (77) extending out of the guide groove (38) is welded at one end of the guide block (76) away from the connecting column (73). The wall grabbing pressing piece (77) is a curved spring steel sheet structure, and four groups of the wall grabbing pressing 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 meshedly arranged on the oblique lower side of the large gear (42). The small gear (43) is sleeved on the output shaft of a 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 arranged 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) for acting on the forward threaded shaft (45) and the reverse threaded shaft (46) is installed at the bottom of the bending arm (81); a rear clamping rod (83) is fixedly connected to the upper end of the bending arm (81) at a rear position; and the first lower mold core (2 A slot (17) is horizontally provided in the middle of the inner wall of the bending arm (81) for horizontal movement of the rear clamping rod (83); a movable slot (86) is provided 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 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) comprises 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 part 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 rotating part (91) is provided with an inner bearing (92); the inner bearing (92) is provided with a rotating part (91 ... ) is sleeved on the outside of a 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 means of a baffle (94) and the inner wall of the bending arm (81), two groups of torsion springs (95) are symmetrically sleeved on the area where the fixed shaft (93) protrudes from the rotating part (91), 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 guide grooves (4) is connected to a retaining groove (50), the retaining groove (50) is larger than the guide groove (4), a round pressure block (51) is movably installed in the retaining 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 to 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 retaining 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 clamp (56) is installed at the tail of the backup airbag (55), and the sealing clamp (56) is fixed inside the lower mold (2). An L-shaped guide rod (57) is welded to the upper end of the sealing clamp (56).

9. The communication metal dome automatic stamping die according to claim 8, characterized in that: A compressed air device seat (60) is movably arranged on the L-shaped guide rod (57), and a movable rod groove (61) for the L-shaped guide rod (57) to pass through is horizontally penetrated inside 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 a second bearing seat (63) is connected to the outer shell of the rotating shaft (62), 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 arranged to pass 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 downwardly out of the compressed air device seat (60). The two groups of compressed air sealing wheels (66) act on the reserve 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 located directly below the reserve air bag (55). Gear tracks (59) are symmetrically arranged on both edges 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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