A fully automatic stamping device

Abstract

The present invention discloses a fully automatic stamping device, which includes a stamping machine body and a forming die. The stamping machine body includes a lower pressing plate, on which a forming head is arranged. The forming die is arranged on the stamping machine body, and a die cavity is arranged inside the forming die. The forming head moves downward to cooperate with the die cavity to stamp and form a sheet. A hydraulic punching rod is arranged inside the forming head. The present invention provides a fully automatic stamping device, which automatically completes the punching operation on the formed part after the sheet forming, and automatically rivets nuts on the punching holes, thus eliminating the subsequent process of secondary positioning for riveting, reducing the time of handling and moving, shortening the processing time of the formed part, reducing the time of manual or manipulator operation, thereby improving the processing efficiency and reducing the production cost of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping devices, and in particular to a fully automatic stamping device. Background Art

[0002] Stamping forming refers to a processing and forming method in which an external force is applied to plates, strips, pipes, profiles, etc. by a press and a die, so that they undergo plastic deformation or separation, thereby obtaining workpieces (stamped parts) with the required shapes and dimensions.

[0003] Moreover, the thickness of the sheet metal for stamping forming is generally small. Therefore, tapping operations are often not feasible, and it is often necessary to weld nuts or rivet nuts at the positions of the stamping holes. In some cases, at the bottom of deep grooves, the welding torch cannot reach deep enough, and only the riveting process can be carried out. The process of riveting nuts requires the stamped parts to be positioned and clamped again, and then nuts are riveted at the hole positions manually or by a manipulator. Summary of the Invention

[0004] The present invention provides a fully automatic stamping device for the deficiencies in the prior art.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions: A fully automatic stamping device includes a stamping machine body and a forming die. The stamping machine body includes a lower platen, and a forming head is provided on the lower platen. The forming die is provided on the stamping machine body, and a die cavity is provided in the forming die. The forming head moves downward to cooperate with the die cavity to stamp the sheet metal into shape. A hydraulic punching rod is provided in the forming head. A through hole is opened on the bottom surface of the die cavity, and a first sliding groove is opened on the side surface at the upper end of the through hole. A punching slider group is slidably guided in the first sliding groove. The punching slider group includes a first slider, a second slider, and a first elastic member. The two ends of the first elastic member respectively abut against the first slider and the second slider, and half of a punching hole is opened on both the first slider and the second slider. The two abut against each other to form a complete punching hole. The hydraulic punching rod moves downward to cooperate with the punching hole to complete the punching operation on the formed part. An automatic nut riveting gun and a rivet nut conveying device are provided on the forming die. A guiding member and a riveting gun are provided on the automatic nut riveting gun. The guiding member is slidably guided up and down on the bottom surface of the forming die, and the riveting gun is located in the through hole. The rivet nut conveying device includes a magnetic adsorption slider, which can magnetically adsorb the side surface of the rivet nut and push it above the riveting gun and below the punching hole. When the hydraulic punching rod moves downward, after passing through the punching hole, it presses against the rivet nut, pushing the rivet nut downward to automatically load the rivet nut on the riveting gun. When the hydraulic punching rod moves upward, the first slider and the second slider open to both sides, and the riveting gun moves upward, allowing the rivet nut to pass into the punching hole. The riveting gun is activated to rivet the rivet nut in the punching hole.

[0006] Its beneficial effects are as follows. After the sheet metal forming is completed, the punching operation on the formed part is automatically completed, and nuts are automatically riveted on the punched holes, eliminating the secondary positioning process for riveting, shortening the processing time, reducing the processing procedures, thereby improving the processing efficiency and reducing the production cost of the product.

[0007] In the above solution, preferably, a second chute is further provided on the side surface at the upper end position of the through hole. The second chute is perpendicular to the first chute. A tightening slider group is slidably arranged in the second chute in a guiding manner. The tightening slider group includes a third slider, a fourth slider and a first hydraulic component. First inclined surfaces are provided on the third slider and the fourth slider, and first hydraulic components are provided on the bottom surfaces of both. Second inclined surfaces are provided on the first slider and the second slider. When the third slider and the fourth slider move upward, the first inclined surfaces abut against the second inclined surfaces provided on the first slider and the second slider, pushing the first slider and the second slider against each other to form a complete punched hole. The first hydraulic component contracts downward, and the first slider and the second slider automatically separate under the action of the first elastic component.

[0008] In the above solution, preferably, one end of a first pull rope is connected to the guiding component, and the other end is connected to the hydraulic rod of the first hydraulic component. When the first hydraulic component contracts downward, the riveting gun is pulled upward through the first pull rope.

[0009] In the above solution, preferably, a first sliding cavity is provided in the forming head. A sliding block is slidably arranged in the first sliding cavity in a guiding manner. A second sliding cavity is provided in the sliding block. A limiting ring is provided on the hydraulic punching rod. The limiting ring is slidably arranged in the second sliding cavity, and a second elastic component is provided between the bottom surface of the limiting ring and the bottom surface of the second sliding cavity. When the hydraulic punching rod extends downward out of the bottom surface of the forming head, the bottom surface of the sliding block is flush with the forming head. When the hydraulic punching rod retracts upward into the forming head, it drives the sliding block to move upward together, forming a concave cavity above the punched hole.

[0010] Its beneficial effects are as follows. When riveting, pressure is applied to the upper end of the formed part, and at the same time, there is a concave cavity above the punched hole around, providing space for riveting the riveting nut.

[0011] In the above solution, preferably, a third channel and a fourth slideway are provided in the forming die, and the two are perpendicular to each other. A magnetic attraction slider is slidably arranged in the fourth slideway in an elastic guiding manner. One end of a second pull rope is connected to its rear end, and the other end is connected to the hydraulic rod of the first hydraulic component. The riveting nut conveying device further includes a conveyor belt. The conveyor belt is arranged in the third channel. When the first hydraulic component extends upward and relaxes the second pull rope, the magnetic attraction slider moves forward under the action of the rear elastic component, passes through the conveyor belt, adsorbs the riveting nut on the conveyor belt and drives it to move to the lower part of the punched hole.

[0012] In the above solution, preferably, the blind rivet nut conveying device further includes a driving device. The conveyor belt includes a belt line and a power roller. The driving device includes a first gear and a first rack. The first gear is unidirectionally rotatably arranged on the power roller. A guide post is arranged in the forming die. The first rack is elastically guided and slidably arranged on the guide post, and the first rack is meshed and connected with the first gear. When the first rack moves downward, it drives the first gear to rotate counterclockwise, driving the belt line to rotate, and conveying the rear blind rivet nuts into the fourth slideway. When the first rack moves upward, it drives the first gear to rotate clockwise, and it rotates relative to the power roller, and the belt line does not rotate.

[0013] Its beneficial effect is that it can continuously and automatically convey blind rivet nuts.

[0014] In the above solution, preferably, the driving device further includes a third pulling rope. One end of the third pulling rope is connected below the first rack, and the other end is connected to the hydraulic rod of the first hydraulic component. When the first hydraulic component contracts downward, it pulls the first rack downward through the third pulling rope.

[0015] In the above solution, preferably, the third pulling rope is in a slack state in the initial state. When the first hydraulic component moves downward, it first pulls the second pulling rope to pull the magnetic attraction slider into the fourth slideway. After the magnetic attraction slider passes through the third channel, it starts to tighten the third pulling rope to drive the conveyor belt to rotate.

[0016] The beneficial effect of the present invention is that the present invention provides a fully automatic stamping device, which automatically completes the punching operation of the formed part after the forming of the sheet material, and automatically rivets and completes the nuts on the punching holes, thus eliminating the subsequent process of secondary positioning for riveting, reducing the time of handling and moving at the same time, shortening the processing time of the formed part, reducing the time of manual or manipulator operation, thereby improving the processing efficiency and reducing the production cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the present invention.

[0018] Figure 2 It is a cross-sectional view of the present invention.

[0019] Figure 3 It is a combined cross-sectional view of the forming head and the forming die of the present invention.

[0020] Figure 4 It is an internal schematic diagram of the automatic rivet nut gun and the blind rivet nut conveying device of the present invention.

[0021] Figure 5 It is a schematic diagram of the internal slideway channel of the forming die of the present invention.

[0022] Figure 6 It is a partial side view of the interior of the present invention.

[0023] Figure 7 This is a schematic diagram of the internal part of the present invention.

[0024] Figure 8 This is a partially enlarged view when the hydraulic punch rod of the present invention is retracted. Specific Embodiments

[0025] The following further describes the present invention in detail in conjunction with the accompanying drawings and specific embodiments: Refer to Figures 1-8 , a fully automatic stamping device, including a stamping machine body 1, a forming die 2, an automatic rivet nut gun 3 and a rivet nut conveying device 4. The stamping machine body 1 includes a lower pressing plate 11, and the pressing plate 11 is controlled by the main hydraulic component on the stamping machine body 1 to move up and down. A forming head 12 and a hydraulic punch rod 13 are provided on the lower end surface of the lower pressing plate 11. The hydraulic punch rod 13 is arranged inside the forming head 12 and can move up and down under hydraulic control, and can extend downward to the bottom surface of the forming head 12. A mold cavity 21 is formed in the forming die 2. A sheet is placed on the forming die 2, and the lower pressing plate 11 moves downward. The forming head 12 cooperates with the mold cavity 21 to stamp the sheet to form a stamped part.

[0026] A first sliding cavity 121 is formed in the forming head 12. A sliding block 122 is slidably arranged in the first sliding cavity 121 in a guiding manner. When the sliding block 122 slides upward, a concave cavity can be formed on the bottom surface of the forming head 12. A second sliding cavity 1221 is arranged inside the sliding block 122. A limiting ring 131 is arranged on the hydraulic punch rod 13, and the limiting ring 131 is slidably arranged in the second sliding cavity 1221. A second elastic member 123 is sleeved on the hydraulic punch rod 13, and its two ends respectively abut against the bottom surface of the limiting ring 131 and the bottom surface of the second sliding cavity 1221.

[0027] When the forming head 12 cooperates with the mold cavity 21 to stamp and form the sheet, the hydraulic punch rod 13 retracts into the forming head 12. After the stamping and forming is completed, the hydraulic punch rod 13 starts to extend downward to the bottom surface of the forming head 12 and cooperates with the punching hole 2311 on the bottom surface of the mold cavity 21 to complete the punching operation of the formed part. During the punching process, the bottom surface of the sliding block 122 is flush with the bottom surface of the forming head 12. After the punching is completed, the hydraulic punch rod 13 starts to move upward. During the moving process, the limiting ring 131 on the hydraulic punch rod 13 abuts against the top surface of the second sliding cavity 1221, thereby driving the sliding block 122 to move upward together, and a concave cavity is formed on the bottom surface of the forming head 12.

[0028] A through hole 22 is formed on the bottom surface of the mold cavity 21. A first chute 221 and a second chute 222 are formed on the side surface at the upper end of the through hole 22. The orientation of the first chute 221 is in the horizontal direction, and the orientation of the second chute 222 is in the vertical direction. The two are perpendicular to each other. A punching slider group 23 is slidably arranged in the first chute 221 in a guiding manner. The punching slider group 23 is formed by combining a first slider 231 and a second slider 232 which are symmetrical to each other. A counterbore is formed on the surface where the first slider 231 and the second slider 232 are in contact with each other. A first elastic member 233 is arranged in the counterbore. The two ends of the first elastic member 233 respectively abut against the bottom surfaces of the two counterbores. Thus, when there is no thrust on both sides of the first slider 231 and the second slider 232, under the action of the first elastic member 233, the two are separated from each other. Half punching holes 2311 are formed on the joint surfaces of the first slider 231 and the second slider 232. When the first slider 231 and the second slider 232 are abutted and combined together, a complete punching hole 2311 is formed, so as to cooperate with the hydraulic punching rod 13 to perform punching operation on the bottom surface of the formed part. A tightening slider group 24 is slidably arranged in the second chute 222 in a guiding manner. The tightening slider group 24 includes a third slider 241, a fourth slider 242 and a first hydraulic member 243. The third slider 241 and the fourth slider 242 are respectively slidably arranged in the second chutes 222 on both sides of the through hole 22 in a guiding manner. The top ends of the telescopic rods of the first hydraulic member 243 are connected to the bottom surfaces of the third slider 241 and the fourth slider 242 respectively. The bottom of the first hydraulic rod 243 is arranged on the protruding block at the bottom of the through hole 22. Thus, the first hydraulic rod 243 expands and contracts up and down to control the up and down movement of the third slider 241 and the fourth slider 242.

[0029] Wherein, a first inclined surface 2411 is arranged on the third slider 241 and the fourth slider 242, and a second inclined surface 2312 is arranged on the first slider 231 and the second slider 231. When the first hydraulic member 243 extends upward, the first inclined surface 2411 on the third slider 241 and the fourth slider 242 abuts against the second inclined surface 2312 on the first slider 231 and the second slider 231. Thus, the first slider 231 and the second slider 231 move closer to the middle and abut against each other, so that the half punching holes 2311 on the two are combined to form a complete punching hole 2311. When the first hydraulic member 243 contracts downward, the third slider 241 and the fourth slider 242 move downward, and the abutting force of the first inclined surface 2411 on the second inclined surface 2312 decreases. Thus, the first slider 231 and the second slider 231 are opened to both sides under the action of the first elastic member 233, so that the hole under the hydraulic punching rod 13 becomes larger.

[0030] The automatic rivet nut gun 3 includes a guide member 31 and an automatic riveting gun 32. The guide member 31 is two limit guide rods, which are slidably arranged on the bottom surface of the forming die 2 through the guide member 31. At the same time, the automatic riveting gun 32 is arranged on the guide member 31 and moves up and down together with the guide member 31. The automatic riveting gun 32 is located in the through hole 22 and directly below the hydraulic punch rod 13. When a rivet nut presses on the upper end of the bolt head of the automatic riveting gun 32, it can automatically rotate to install the rivet nut on the automatic riveting gun 32 automatically. After the automatic riveting gun 32 fixes the rivet nut in the punching hole of the formed part, it automatically reverses, so that the bolt at its front end automatically withdraws from the rivet nut.

[0031] One end of a first pull rope 311 is connected to the upper end of the guide member 31, and the other end is connected to the hydraulic rod of the first hydraulic member 243. The first pull rope 311 is an elastic pull rope. When the first hydraulic member 243 contracts downward, the automatic riveting gun 32 can be pulled upward through the first pull rope 311. When the automatic riveting gun 32 rises, the first slider 231 and the second slider 232 open to both sides under the action of the first elastic member 233, so that the space above the automatic riveting gun 32 is opened. At the same time, a concave cavity is formed on the bottom surface of the forming head 12. The automatic riveting gun 32 rises and the rivet nut enters the punching hole. At the same time, the edge of the rivet nut touches the bottom surface of the formed part. At this time, the automatic riveting gun 32 automatically starts and fixes the rivet nut on the punching hole. After the riveting is completed, the automatic riveting gun 32 automatically starts to reverse, so that the bolt section at its front end automatically pushes the rivet nut downward. At this time, the automatic riveting gun 32 moves downward relatively, so that the first pull rope 311 is elastically stretched.

[0032] The rivet nut conveying device 4 includes a magnetic adsorption slider 41, a conveyor belt 42 and a driving device 43. A third channel 25 and a fourth slideway 26 are formed in the forming die 2, and the two are vertically and communicatively connected. The magnetic adsorption slider 41 is guidingly slidably arranged in the fourth slideway 26. One end of a second pulling rope 411 is connected to the rear end thereof, and the other end is connected to the hydraulic rod of the first hydraulic member 243. A third elastic member 412 is sleeved on the second pulling rope 411. Two ends of the third elastic member 412 respectively abut against the rear end of the magnetic adsorption slider 41 and the rear end of the fourth slideway 26. The conveyor belt 42 is arranged in the third channel 25. The conveyor belt 42 transports the rivet nuts from outside the forming die 2 into the forming die 2 through the third channel 25. The conveyor belt 42 includes a belt line 421, a driving roller 422 and auxiliary rollers. The belt line 421 is sleeved on the driving roller 422 and the auxiliary rollers. The driving roller 422 is arranged to rotate unidirectionally in the forming die 2 and can only rotate counterclockwise. Rivet nuts are sequentially arranged on the belt line 421. When the belt line 421 rotates, the rivet nuts can be transported into the fourth slideway 26. The driving device 43 includes a first gear 431, a first rack 432 and a third pulling rope 433. The first gear 431 is arranged to rotate unidirectionally on the driving roller 422. A guide post 27 is arranged in the forming die 2. The first rack 432 is elastically and guidingly slidably arranged on the guide post 27, and the first rack 431 is meshed and connected with the first gear 431. One end of a third pulling rope 433 is connected to the lower part of the first rack 432, and the other end is connected to the hydraulic rod of the first hydraulic member 243. A nut detection sensor is arranged in the through hole 22. An electromagnet with a V-shaped notch is arranged at the front end of the magnetic adsorption slider 41. After being energized, the electromagnet can generate magnetic attraction force.

[0033] Its working principle or usage method is as follows:

[0034] In the initial state, the first hydraulic component 243 is in a contracted state. At this time, the magnetic attraction slider 41 is pulled into the bottom of the fourth slideway 26. Then, when power is supplied to start, the first hydraulic component 243 begins to move upward, thereby relaxing the first pulling rope 311, the second pulling rope 411, and the third pulling rope 433. The relaxation of the first pulling rope 311 causes the automatic rivet nut gun 3 to move downward. The relaxation of the third pulling rope 433 causes the first rack 432 to reset. The first rack 432 moves upward, driving the first gear 431 to rotate clockwise. The power roller 422 cannot rotate clockwise, so it rotates relative to the power roller 422, and the belt line 421 does not rotate either. At this time, there is a rivet nut on the belt line 421 at the intersection of the third channel 25 and the fourth slideway 26. The relaxation of the second pulling rope 411 causes the magnetic attraction slider 41 to start to extend forward under the action of the third elastic component 412. When passing through the third channel 25, power is supplied, so as to adsorb the rivet nut at the intersection position, drive the nut to move forward together until it finally moves above the automatic riveting gun 32. At this time, the first hydraulic component 243 also rises to the highest position, and the first slider 231 and the second slider 231 are combined to form a complete punching hole 2311.

[0035] The operator or the manipulator places the plate on the upper end surface of the forming die 2. The forming head 12 begins to descend to cooperate with the die cavity 21 to perform stamping forming on the plate. After the forming is completed, the hydraulic punching rod 13 begins to extend downward to the bottom surface of the forming head 12, and cooperates with the punching hole 2311 to complete the punching operation on the formed part. When the hydraulic punching rod 13 enters the punching hole 2311, it pushes the punching blank to move downward, presses on the rivet nut below the punching hole 2311, drives the rivet nut to move downward, so that the rivet nut presses on the threaded head of the automatic riveting gun 32. The automatic riveting gun 32 rotates automatically to install the rivet nut on the threaded head automatically. At this time, the opposite rivet nut descends and separates from the hydraulic punching rod 13. At this time, the punching blank is adsorbed by the magnetic attraction slider 41 on the side. Then the hydraulic punching rod 13 rises upward, driving the sliding block 122 to move upward together, so as to form a concave cavity on the bottom surface of the forming head 12.

[0036] At this time, the first hydraulic component 243 begins to shrink downward, the third slider 241 and the fourth slider 242 move downward, and the first slider 231 and the second slider 231 open to both sides under the action of the first elastic component 233, thereby enlarging the hole below the hydraulic punch 13 and opening the space above the automatic rivet gun 32. The first hydraulic component 243 shrinks, and the automatic rivet gun 32 can be pulled upward by the first pull rope 311. The automatic rivet gun 32 rises to send the rivet nut into the punching hole, and the edge of the rivet nut touches the bottom surface of the molded part. At this time, the automatic rivet gun 32 automatically starts to start and fixes the rivet nut on the punching hole. After riveting is completed, the automatic rivet gun 32 automatically starts to reverse, so that the bolt section at its front end automatically pushes the rivet nut downward. At this time, the automatic rivet gun 32 moves relatively downward, so that the first pull rope 311 is elastically stretched.

[0037] During the downward movement of the first hydraulic component 243, the second pull rope 411 is pulled to retract the magnetic slider 41 backward into the fourth slide 26. A blanking port is opened at the rear of the third channel 25 in the direction of the fourth slide 26. When the first hydraulic component 243 is fully retracted, the magnetic slider 41 passes through the third channel 25 and is located above the blanking port. At this time, the magnetic slider 41 is powered off, and the punched blank previously adsorbed on it automatically falls downward into the blanking port.

[0038] During the downward movement of the first hydraulic component 243, when the front end of the magnetic slider 41 passes through the third channel 25, the third pull rope 433 is tightened, thereby pulling the first rack 432 downward, driving the first gear 431 to rotate counterclockwise, driving the belt line 421 to rotate, and transporting the rivet nuts at the rear to the fourth slide 26, preparing for the next transportation of the rivet nuts.

[0039] At this point, the riveting of the rivet nut on the molded part is completed. At this time, the molding head 12 moves upward and returns to its initial state, and the automatic rivet gun 32 is still elastically in contact with the rivet nut of the molded part. After the molding head 12 moves upward, the clamping force on the molded part disappears, and the first pull rope 311 elastically recovers, thereby pushing the entire molded part upward for a certain distance, so that the molded part is out of contact with the mold cavity 21. At this time, the operator or the robot removes the molded part with the nut riveted.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully automatic punching device, comprising a punching machine body (1) and a forming die (2), wherein the punching machine body (1) comprises a lower pressing plate (11), a forming head (12) is arranged on the lower pressing plate (11), the forming die (2) is arranged on the punching machine body (1), a die cavity (21) is arranged in the forming die (2), and the forming head (12) moves downward to cooperate with the die cavity (21) to punch and form a plate; Features: A hydraulic punch (13) is arranged in the forming head (12), a through hole (22) is arranged on the bottom surface of the mold cavity (21), a first slide groove (221) is arranged on the side surface at the upper end position of the through hole (22), a punching slider group (23) is arranged in the first slide groove (221) for guiding and sliding, the punching slider group (23) comprises a first slider (231), a second slider (232) and a first elastic member (233), two ends of the first elastic member (233) respectively contact the first slider (231) and the second slider (232), and half of a punching hole (2311) is arranged on the first slider (231) and the second slider (232), and the two contact each other to form a completed punching hole (2311); The hydraulic punch (13) moves downward and cooperates with the punching hole (2311) to complete the punching operation on the formed part; An automatic rivet nut gun (3) and a pull rivet nut conveying device (4) are provided on the forming die (2); a guide member (31) and a rivet gun (32) are provided on the automatic rivet nut gun (3), and the rivet gun (32) is slidably arranged on the bottom surface of the forming die (2) by means of the guide member (31) so as to guide the rivet nut up and down, and the rivet gun (32) is located in the through hole (22); and the pull rivet nut conveying device (4) comprises a magnetic attraction slider (41); The magnetic attraction slider (41) can magnetically attract the side of the rivet nut and push it to the top of the rivet gun (32) and below the punching hole (2311). The hydraulic punch (13) moves downward, passes through the punching hole (2311), and then presses on the rivet nut, pushing the rivet nut downward, so that the rivet nut is automatically loaded on the rivet gun (32). When the hydraulic punch (13) moves upward, the first slider (231) and the second slider (232) open to both sides, and the rivet gun (32) moves upward, so that the rivet nut passes into the punching hole. The rivet gun (32) is started, and the rivet nut is riveted into the punching hole.

2. A fully automatic punching device according to claim 1, characterized in that: A second slide groove (222) is also provided on the side surface at the upper end of the through hole (22). The second slide groove (222) is perpendicular to the first slide groove (221). A tightening slider group (24) is provided in the second slide groove (222) for guiding and sliding. The tightening slider group (24) includes a third slider (241), a fourth slider (242) and a first hydraulic component (243). The third slider (241) and the fourth slider (242) are provided with a first inclined surface (2411), and the bottom surfaces of the third slider (241) and the fourth slider (242) are provided with a first hydraulic component (243). The first slider (231) and the second slider (231) are provided with a first inclined surface (2411). The slider (232) is provided with a second inclined surface (2312), the third slider (241) and the fourth slider (242) move upward, the first inclined surface (2411) contacts the second inclined surface (2312) provided on the first slider (231) and the second slider (232), the first slider (231) and the second slider (232) contact each other, and a complete punching hole (2311) is formed, the first hydraulic component (243) contracts downward, and the first slider (231) and the second slider (232) are automatically separated under the action of the first elastic component (233).

3. A fully automatic punching device according to claim 2, characterized in that: One end of a first pull rope (311) is connected to the guide member (31), and the other end is connected to a hydraulic rod of a first hydraulic member (243). When the first hydraulic member (243) contracts downward, the rivet gun (32) is pulled upward by the first pull rope (311).

4. A fully automatic punching device according to claim 1, characterized in that: The forming head (12) is provided with a first sliding cavity (121), a sliding block (122) is provided in the first sliding cavity (121) for guiding sliding, a second sliding cavity (1221) is provided in the sliding block (122), a limiting ring (131) is provided on the hydraulic punch (13), and the limiting ring (131) is slidably provided in the second sliding cavity (1221), and a second elastic member (123) is provided between the bottom surface of the limiting ring (131) and the ground of the second sliding cavity (1221), when the hydraulic punch (13) extends downward from the bottom surface of the forming head (12), the bottom surface of the sliding block (122) is flush with the forming head (12), and when the hydraulic punch (13) is retracted upward into the forming head (12), the sliding block (122) is driven to move upward together, so that a concave cavity is formed above the punching hole (2311).

5. The fully automatic punching device according to claim 1, characterized in that: The forming die (2) is provided with a third channel (25) and a fourth slideway (26), and the two are perpendicular to each other. The magnetic slider (41) is elastically guided and slidably arranged in the fourth slideway (26), and its rear end is connected to one end of a second pull rope (411), and the other end is connected to the hydraulic rod of the first hydraulic component (243). The rivet nut conveying device (4) also includes a conveyor belt (42), which is arranged in the third channel (25) and extends upward from the first hydraulic component (243). When the second pull rope (411) is loosened, the magnetic slider (41) moves forward under the action of the rear elastic component, passes above the conveyor belt (42), absorbs the rivet nut on the conveyor belt (42), and drives it to move to below the punching hole (2311).

6. A fully automatic punching device according to claim 5, characterized in that: The rivet nut conveying device (4) further comprises a driving device (43), the conveying belt (42) comprises a belt line (421) and a power roller (422), the driving device (43) comprises a first gear (431) and a first rack (432), the first gear (431) is unidirectionally rotatably arranged on the power roller (422), a guide column (27) is arranged in the molding die (2), the first rack (432) is elastically guided and slidably arranged on the guide column (27), and the first rack (432) is meshingly connected with the first gear (431), the first rack (432) moves downward, drives the first gear (431) to rotate counterclockwise, drives the belt line (421) to rotate, and transports the rear rivet nuts to the fourth slideway (26), the first rack (432) moves upward, drives the first gear (431) to rotate clockwise, and rotates relative to the power roller (422), and the belt line (421) does not rotate.

7. A fully automatic punching device according to claim 6, characterized in that: The driving device (43) further comprises a third pull rope (433), one end of the third pull rope (433) being connected below the first rack (432), and the other end being connected to the hydraulic rod of the first hydraulic component (243); when the first hydraulic component (243) contracts downward, the first rack (432) is pulled downward by the third pull rope (433).

8. A fully automatic punching device according to claim 7, characterized in that: The third pull rope (433) is in a relaxed state in an initial state. The first hydraulic component (243) moves downward, first pulling the second pull rope (411) to pull the magnetic slider (41) into the fourth slideway (26). After the magnetic slider (41) passes through the third channel (25), the third pull rope (433) is tightened to drive the conveyor belt (42) to rotate.

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