Punching equipment for nut production

Abstract

The invention relates to the technical field of nut production, and one embodiment of the invention provides stamping equipment for nut production, which comprises a carrying mechanism, a stamping mechanism, a supporting mechanism and a power mechanism. Through the arranged supporting mechanism, when a nut needs to be stamped and marked, a second hydraulic cylinder is started firstly, a fixing plate is pushed upwards, then a vertical pipe is inserted into a center hole formed in an upper disc, then a first hydraulic cylinder is started, a sliding plate is pushed downwards, and at the moment, a piston head pushes hydraulic oil in the vertical pipe; the hydraulic oil is extruded to push the piston block, the air pressure in the connecting pipe also reaches the pressure value for opening the pressure valve, at the moment, along with opening of the pressure valve, the high-pressure air in the connecting pipe impacts the sliding block, the sliding block impacts the shear thickening fluid in the elastic film, and therefore the fluid in the elastic film is solidified, the nut is supported from the interior, and the shear thickening effect is achieved. By means of the technical scheme, the technical problem that in the prior art, the supporting effect becomes poor after a supporting mandrel is used for a long time is solved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of nut production, and in particular, to a stamping device for nut production. Background Art

[0002] Nuts are common fasteners in life and are widely used in various aspects. When producing nuts, relevant specification information of the nuts will be stamped out on the workpiece to facilitate purchase and use.

[0003] At present, when marking the end face or circumference of a nut, due to the pressure applied by the marking machine, the nut will undergo elastic and plastic deformation during the marking process. When the nut undergoes plastic deformation, resulting in its inner hole being non-circular, the shape of the inner hole will affect the subsequent tapping process. On the one hand, it is more difficult to cut such an inner hole, and the thread quality will also be reduced. At the same time, it will also cause the tap to wear more or break, shortening the service life of the tool. Therefore, when performing stamping marking, the mandrel used for support will be inserted into the hole in the middle of the workpiece, so that when the workpiece is subsequently stamped and marked, due to the obstruction of the mandrel, the hole inside the workpiece will not be deformed, thereby ensuring that after the marking is completed, the inner hole of the workpiece meets the requirements of the subsequent tapping process. However, as the equipment works for a long time, after the mandrel is frequently squeezed, dents will appear on the surface of the mandrel, resulting in a poor support effect on the inner hole of the workpiece. Summary of the invention

[0004] In order to overcome the above-mentioned defects, an embodiment of the present disclosure provides a punching device for producing nuts, which solves the technical problem in the prior art that the supporting effect of the supporting core shaft deteriorates after long-term use.

[0005] According to one aspect, at least one embodiment of the present disclosure provides a punching device for producing nuts, including a loading mechanism, a punching mechanism, and a supporting mechanism: The object-carrying mechanism comprises a bracket, an upper plate and a lower plate, wherein the lower plate is fixedly connected to the top surface of the bracket, a mounting ring extending from the bottom surface of the upper plate and penetrating the lower plate, the mounting ring being rotatably mounted in the lower plate, and a penetrating center hole is opened at the center of the top surface of the upper plate; The punching mechanism comprises a punching frame, a sliding plate is slidably sleeved on the punching frame, a first hydraulic cylinder is fixedly connected to the inner top surface of the punching frame, a telescopic end of the first hydraulic cylinder is fixedly connected to the top surface of the sliding plate, two symmetrical punches are installed on the bottom surface of the sliding plate, a protruding rod is fixedly connected to the center of the bottom surface of the sliding plate, and the protruding rod is located directly above the center hole; The supporting mechanism includes a second hydraulic cylinder, the telescopic end of the second hydraulic cylinder is fixedly connected to a fixed plate, the top surface of the fixed plate is fixedly connected to two symmetrical end seats, the center of the top surface of the fixed plate is fixedly connected to an intermediate seat, a connecting pipe is fixedly connected between the end seat and the intermediate seat and is communicated with each other, the top surface of the end seat is fixedly connected to a pressure valve, the outlet of the pressure valve is fixedly connected to a sliding tube, a center rod is fixedly sleeved in the sliding tube, a striking slider is slidably sleeved in the sliding tube, the striking slider passes through the bottom of the center rod, an elastic membrane is fixedly sleeved on the outer surface of the center rod, and the elastic membrane is filled with fluid.

[0006] Preferably, the circumferential side of the upper plate is provided with a plurality of centrally symmetrical feed ports, and the top surface of the lower plate is provided with a loading position, a stamping position and a lowering position, and the loading position, stamping position and lowering position are each provided with two symmetrical ones, and the symmetrical loading position, stamping position and lowering position are arranged on the lower plate in a centrally symmetrical structure.

[0007] Preferably, the upper material position is a plurality of conveying rollers fixedly mounted on the top surface of the lower plate, the punching position is a through hole opened on the top surface of the lower plate, the lower material position is a notch opened on the circumferential side of the lower plate, and the width of the lower material position is greater than the feed port.

[0008] Preferably, a fixing frame is fixedly connected to the stamping frame, and a symmetrical first sliding groove is opened on the side of the fixing frame facing the center of the upper plate. A first sliding rod is slidably sleeved in the first sliding groove, a positioning head is fixedly connected to one end of the first sliding rod, and a first spring is elastically connected between the positioning head and the first sliding groove.

[0009] Preferably, the top surface of the middle seat is fixedly connected with a vertical tube, a piston head is slidably sleeved in the vertical tube, the bottom surface of the piston head is fixedly connected with a second spring, and the other end of the second spring is connected to the inner wall of the vertical tube.

[0010] Preferably, the vertical pipe is communicated with a connecting pipe, a piston block is slidably sleeved in the connecting pipe, and a third spring is elastically connected between one end of the piston block and the inner side surface of the connecting pipe.

[0011] Preferably, the connecting pipe is divided into a hydraulic section and a pneumatic section by a piston block, the hydraulic section extends from the piston head to the piston block and is filled with hydraulic oil, the pneumatic section extends from the piston block to the pressure valve and is filled with air, and an air intake check valve is fixedly connected to the side of the end seat, and the air intake check valve is communicated with the pneumatic section.

[0012] Preferably, an exhaust port is provided on the side of the sliding tube.

[0013] Preferably, the support mechanism further comprises a guide ring, the guide ring is fixedly connected to the bottom surface of the lower plate, and the guide ring is concentric with the through hole of the punching position, and the bottom surface of the lower plate is fixedly connected with a material discharge trough located below the material discharge position.

[0014] Preferably, it further comprises a power mechanism, the power mechanism comprises a motor fixedly connected in the bracket, the output shaft of the motor is fixedly sleeved with a first gear, the mounting ring on the bottom surface of the upper plate is fixedly sleeved with a second gear, and the first gear is meshed with the second gear. The embodiments of the present disclosure have the following beneficial effects: 1. In the present invention, through the support mechanism, when the nut needs to be stamped and marked, the second hydraulic cylinder is first started to push the fixed plate upward, and then the vertical pipe is inserted into the center hole opened in the upper plate, and then the first hydraulic cylinder is started to push the sliding plate downward, so that the punch moves downward. At this time, as the sliding plate moves downward, the extension rod extends into the center hole. After the extension rod contacts the piston head in the vertical pipe, as the first hydraulic cylinder continues to work, the extension rod pushes the piston head to move downward. At this time, the piston head pushes the hydraulic oil in the vertical pipe, and the hydraulic oil is squeezed to push the piston block. As the piston block moves, the air in the connecting pipe is compressed. At this time, as the sliding plate continues to move downward, the air in the connecting pipe is continuously compressed. When the punch starts to stamp the nut downward, the air pressure in the connecting pipe also reaches the pressure valve to punch out the nut. At this time, as the pressure valve opens, the high-pressure gas in the connecting pipe impacts the slider. At this time, as the slider moves up quickly, it impacts the shear thickening fluid in the elastic membrane, so that when the punch punches and marks the nut, the fluid in the elastic membrane solidifies, thereby supporting the nut from the inside to prevent the inner hole from being deformed due to the impact force during marking, causing problems with the nut in the subsequent tapping stage. At the same time, by using elastic membrane and shear thickening fluid to replace the traditional steel rod mandrel, it can be achieved that before stamping, the center rod is inserted into the inner hole of the nut without contacting the inner hole of the nut, thereby avoiding the problem of slow installation of the traditional mandrel. At the same time, the fluid in the elastic membrane will only solidify when it is impacted, thereby avoiding the problem of the mandrel becoming concave after long-term support and being unable to continue to support the nut.

[0015] 2. Secondly, through the exhaust port set, after the striking slider is pushed by the high-pressure gas that opens the pressure valve, the lower half of the striking slider is located above the exhaust port. At this time, the high-pressure gas is discharged from the exhaust port, thereby balancing the air pressure in the connecting pipe and avoiding damage to the sliding pipe by continuous high air pressure. As the air pressure in the sliding pipe recovers to balance, the striking slider is no longer pushed by the air pressure, and moves downward under the push of the liquid in the elastic membrane, thereby closing the exhaust port. After that, as the first hydraulic cylinder and the second hydraulic cylinder retract, the second spring pushes the piston head to move upward and reset, and the third spring drives the piston block to return. At this time, as the piston block returns, outside air enters the connecting pipe from the air intake check valve, thereby preparing for the next stamping and marking. As the striking slider moves downward, the diameter of the cylinder formed by the elastic membrane is smaller than the inner hole diameter of the nut. Therefore, when the second hydraulic cylinder retracts, the elastic membrane does not contact the inner hole of the nut, thereby avoiding wear of the elastic membrane.

[0016] 3. Finally, through the positioning head and the first spring, after the nut is driven by the upper plate into the stamping position, the two positioning heads squeeze the nut from one side, so that the nut will not deviate outward during stamping, avoiding the nut slipping during stamping and marking and damaging the center rod and elastic membrane, and also avoiding the stamping mark from connecting with the edge of the inner hole, which affects the subsequent tapping process of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present disclosure; Figure 2 is a schematic diagram of the structure of the object carrying mechanism disclosed in the present invention; Figure 3 It is a schematic diagram of the upper plate and lower plate structure of the present invention; Figure 4 It is a schematic diagram of the structure of the punching mechanism disclosed in the present invention; Figure 5 For this disclosure Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the supporting mechanism structure disclosed in the present invention; Figure 7 For this disclosure Figure 6 Enlarged view of point B in the middle.

[0019] In the figure: 1. Loading mechanism; 11. Bracket; 12. Upper plate; 13. Feeding port; 14. Center hole; 15. Lower plate; 16. Loading position; 17. Punching position; 18. Unloading position; 19. Unloading chute; 2. Punching mechanism; 21. Punching frame; 22. Sliding plate; 23. First hydraulic cylinder; 24. Punch; 25. Extending rod; 26. Fixed frame; 27. First slide chute; 28. First slide rod; 29. ​​Positioning head; 210. First spring; 3. Support mechanism; 31. Second Hydraulic cylinder; 32. Fixed plate; 33. End seat; 34. Intermediate seat; 35. Connecting pipe; 36. Vertical pipe; 37. Second spring; 38. Piston head; 39. Piston block; 310. Third spring; 311. Pressure valve; 312. Inlet check valve; 313. Guide ring; 314. Sliding pipe; 315. Center rod; 316. Strike slider; 317. Exhaust port; 318. Elastic membrane; 4. Power mechanism; 41. Motor; 42. First gear; 43. Second gear. DETAILED DESCRIPTION

[0020] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0021] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0022] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0023] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0025] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] like Figures 1 to 7 As shown, a punching device for nut production in this embodiment includes a loading mechanism 1, a punching mechanism 2 and a supporting mechanism 3: The object-carrying mechanism 1 comprises a bracket 11, an upper plate 12 and a lower plate 15. The lower plate 15 is fixedly connected to the top surface of the bracket 11. A mounting ring extending through the lower plate 15 extends from the bottom surface of the upper plate 12. The mounting ring is rotatably mounted in the lower plate 15. A central hole 14 is provided at the center of the top surface of the upper plate 12. The punching mechanism 2 includes a punching frame 21, on which a sliding plate 22 is slidably sleeved, a first hydraulic cylinder 23 is fixedly connected to the inner top surface of the punching frame 21, a telescopic end of the first hydraulic cylinder 23 is fixedly connected to the top surface of the sliding plate 22, two symmetrical punches 24 are installed on the bottom surface of the sliding plate 22, a protruding rod 25 is fixedly connected to the center of the bottom surface of the sliding plate 22, and the protruding rod 25 is located directly above the center hole 14; The supporting mechanism 3 includes a second hydraulic cylinder 31, the telescopic end of the second hydraulic cylinder 31 is fixedly connected to a fixed plate 32, the top surface of the fixed plate 32 is fixedly connected to two symmetrical end seats 33, the center of the top surface of the fixed plate 32 is fixedly connected to an intermediate seat 34, the end seats 33 and the intermediate seats 34 are fixedly connected with a connecting pipe 35 and are communicated with each other, the top surface of the end seat 33 is fixedly connected to a pressure valve 311, the outlet of the pressure valve 311 is fixedly connected to a sliding tube 314, a center rod 315 is fixedly sleeved in the sliding tube 314, a striking slider 316 is slidably sleeved in the sliding tube 314, the striking slider 316 passes through the bottom of the center rod 315, the outer surface of the center rod 315 is fixedly sleeved with an elastic membrane 318, the elastic membrane 318 is filled with fluid, and the fluid is a shear thickening fluid.

[0027] In the present invention, by means of the support mechanism 3, when it is necessary to stamp and mark the nut, the second hydraulic cylinder 31 is first started to push the fixed plate 32 upward, thereby inserting the vertical pipe 36 into the center hole 14 opened in the upper plate 12, and then the first hydraulic cylinder 23 is started to push the sliding plate 22 downward, so that the punch 24 moves downward. At this time, as the sliding plate 22 moves downward, the extension rod 25 extends into the center hole 14. After the extension rod 25 contacts the piston head 38 in the vertical pipe 36, as the first hydraulic cylinder 23 continues to work, the extension rod 25 pushes the piston head 38 to move downward. At this time, the piston head 38 pushes the hydraulic oil in the vertical pipe 36, and the hydraulic oil is squeezed to push the piston block 39. As the piston block 39 moves, the air in the connecting pipe 35 is compressed. At this time, as the sliding plate 22 continues to move downward, the air in the connecting pipe 35 is continuously compressed. When the punch 24 starts to stamp the nut downward, the air in the connecting pipe 35 is compressed. The air pressure also reaches the pressure value that will open the pressure valve 311. At this time, as the pressure valve 311 opens, the high-pressure gas in the connecting pipe 35 impacts the slider 316. At this time, as the slider 316 moves upward quickly, it impacts the shear thickening fluid in the elastic membrane 318, so that when the punch 24 punches and marks the nut, the fluid in the elastic membrane 318 solidifies, thereby supporting the nut from the inside to prevent the inner hole from being deformed due to the impact force during marking, causing problems with the nut in the subsequent tapping stage. At the same time, by using the elastic membrane 318 and the shear thickening fluid to replace the traditional steel rod core shaft, it is possible to insert the center rod 315 into the inner hole of the nut before stamping without contacting the inner hole of the nut, thereby avoiding the problem of slow installation of the traditional core shaft. At the same time, the fluid in the elastic membrane 318 will only solidify when it is impacted, thereby avoiding the problem of the core shaft being concave after long-term support and being unable to continue to support the nut.

[0028] Secondly, through the exhaust port 317, after the striking slider 316 is pushed by the high-pressure gas that opens the pressure valve 311, the lower half of the striking slider 316 is located above the exhaust port 317. At this time, the high-pressure gas is discharged from the exhaust port 317, thereby balancing the air pressure in the connecting pipe 35, thereby preventing the continuous high air pressure from damaging the sliding pipe 314. As the air pressure in the sliding pipe 314 recovers to balance, the striking slider 316 is no longer pushed by the air pressure, and thus moves downward under the push of the liquid in the elastic membrane 318, thereby closing the exhaust port 317. Then, as the first hydraulic The cylinder 23 and the second hydraulic cylinder 31 retract, and the second spring 37 pushes the piston head 38 to move upward and reset. At the same time, the third spring 310 drives the piston block 39 to return. At this time, with the return of the piston block 39, the outside air enters the connecting pipe 35 from the air intake check valve 312, thereby preparing for the next stamping and marking. As the striking slider 316 moves downward, the diameter of the cylinder formed by the elastic membrane 318 is smaller than the inner hole diameter of the nut. Therefore, when the second hydraulic cylinder 31 retracts, the elastic membrane 318 does not contact the inner hole of the nut, thereby preventing the elastic membrane 318 from being worn.

[0029] Finally, by means of the positioning head 29 and the first spring 210, after the nut is driven by the upper plate 12 into the stamping position 17, the two positioning heads 29 squeeze the nut from one side, so that the nut will not deviate outward during stamping, thereby preventing the nut from slipping during stamping and marking and damaging the center rod 315 and the elastic membrane 318, and also preventing the stamping mark from connecting with the edge of the inner hole, thereby affecting the subsequent tapping process of the nut.

[0030] Among them, the circumferential side surface of the upper plate 12 is provided with multiple centrally symmetrical feed ports 13, and the top surface of the lower plate 15 is provided with an upper material position 16, a punching position 17 and a lower material position 18. The upper material position 16, the punching position 17 and the lower material position 18 are each provided with two symmetrical, and the symmetrical upper material position 16, the punching position 17 and the lower material position 18 are arranged on the lower plate 15 in a centrally symmetrical structure. The upper material position 16 is a plurality of conveying rollers fixedly installed on the top surface of the lower plate 15, the punching position 17 is a through hole opened on the top surface of the lower plate 15, and the lower material position 18 is a notch opened on the circumferential side surface of the lower plate 15, and the width of the lower material position 18 is greater than the feed port 13.

[0031] As the motor 41 starts, the second gear 43 drives the upper disc 12 to rotate a certain angle, so that the nut located at the loading position 16 enters the punching position 17. At this time, as the second hydraulic cylinder 31 works, the center rod 315 carries the elastic membrane 318 through the inner hole of the nut, thereby preparing for subsequent support. After the punching and marking is completed, as the upper disc 12 continues to rotate, the nut is driven by the upper disc 12 to move to the lower material position 18, and then falls from the gap of the lower material position 18 into the lower material trough 19, thereby automatically unloading while automatically loading.

[0032] Among them, a fixing frame 26 is fixedly connected to the stamping frame 21, and a symmetrical first sliding groove 27 is opened on the side of the fixing frame 26 facing the center of the upper plate 12. A first sliding rod 28 is slidably sleeved in the first sliding groove 27, and a positioning head 29 is fixedly connected to one end of the first sliding rod 28. A first spring 210 is elastically connected between the positioning head 29 and the first sliding groove 27.

[0033] By providing the positioning heads 29 and the first spring 210, after the nut is driven by the upper plate 12 into the punching position 17, the two positioning heads 29 squeeze the nut from one side, so that the nut will not move laterally when being punched, thereby ensuring the accuracy of marking.

[0034] Among them, the top surface of the middle seat 34 is fixedly connected with a vertical tube 36, a piston head 38 is slidably sleeved in the vertical tube 36, and a second spring 37 is fixedly connected to the bottom surface of the piston head 38. The other end of the second spring 37 is connected to the inner wall of the vertical tube 36. The vertical tube 36 is connected to the connecting tube 35. A piston block 39 is slidably sleeved in the connecting tube 35. A third spring 310 is elastically connected between one end of the piston block 39 and the inner side surface of the connecting tube 35.

[0035] The elastic expansion and contraction of the third spring 310 causes the piston block 39 to move away from the end seat 33. As the piston block 39 moves, the outside air is affected by the air pressure and enters the connecting pipe 35 from the air intake check valve 312, thereby automatically accumulating the air required for the next impact to hit the slider 316.

[0036] Among them, the connecting pipe 35 is divided into a hydraulic section and a pneumatic section by the piston block 39. The hydraulic section is from the piston head 38 to the piston block 39 and is filled with hydraulic oil. The pneumatic section is from the piston block 39 to the pressure valve 311, and air is filled between the two. An intake check valve 312 is fixedly connected to the side of the end seat 33, and the intake check valve 312 is communicated with the pneumatic section. An exhaust port 317 is opened on the side of the sliding tube 314.

[0037] The exhaust port 317 is not connected to the connecting pipe 35 in the default state. When the compressed air impacts the slider 316, the slider 316 rushes up quickly and hits the fluid in the elastic membrane 318. At the same time, the exhaust port 317 is no longer closed. At this time, the high-pressure gas is discharged from the exhaust port 317 to prevent the elastic membrane 318 from still contacting the inner hole of the nut when the second hydraulic cylinder 31 retracts, thereby preventing the elastic membrane 318 from being damaged by friction with the inner hole of the nut.

[0038] The support mechanism 3 further includes a guide ring 313 , which is fixedly connected to the bottom surface of the lower plate 15 , and the guide ring 313 is concentric with the through hole of the punching position 17 , and the bottom surface of the lower plate 15 is fixedly connected with a material discharge trough 19 located below the material discharge position 18 .

[0039] It also includes a power mechanism 4, which includes a motor 41 fixedly connected to the bracket 11, the output shaft of the motor 41 is fixedly sleeved with a first gear 42, and the mounting ring on the bottom surface of the upper plate 12 is fixedly sleeved with a second gear 43, and the first gear 42 is meshed with the second gear 43.

[0040] Working principle: When using the device to stamp and mark nuts, first use the feeding mechanism to feed the nuts into the loading position 16 on the lower plate 15. As the motor 41 rotates, the nuts enter the stamping position 17. At this time, the second hydraulic cylinder 31 is controlled to extend so that the center rod 315 passes through the inner hole of the nut. Then, the first hydraulic cylinder 23 is started to move the sliding plate 22 downward. At this time, as the first hydraulic cylinder 23 works, the extension rod 25 moves downward and passes through the center hole 14. After the extension rod 25 contacts the piston head 38, the piston head 38 is pushed downward, and then the piston block 39 is squeezed through the connecting pipe through hydraulic transmission. The air in the connecting pipe 35 is continuously compressed as the extension rod 25 continues to move downward. When the punch 24 is driven by the first hydraulic cylinder 23 to contact the nut, as the telescopic end of the first hydraulic cylinder 23 continues to extend downward, the punch 24 punches the nut. At the same time, the compressed air in the connecting pipe 35 opens the pressure valve 311, thereby impacting the striking slider 316. At this time, the striking slider 316 moves upward to impact the shear thickening fluid in the elastic membrane 318, thereby solidifying the fluid, thereby supporting the nut from the inner hole to prevent the inner hole of the nut from deforming when the nut is punched and marked.

[0041] As the striking slider 316 moves upward, the exhaust port 317 is no longer blocked, so that the high-pressure gas is discharged from the exhaust port 317. As the impact force provided by the compressed air is lost, the striking slider 316 is pushed downward by the fluid in the elastic membrane 318, thereby re-blocking the exhaust port 317. Then, as the second hydraulic cylinder 31 retracts, the piston head 38 and the piston block 39 are driven to reset by the connected spring. At this time, the outside air enters the connecting pipe 35 from the air intake check valve 312, and at the same time controls the first hydraulic cylinder 23 to retract in preparation for the next stamping.

[0042] As the second hydraulic cylinder 31 retracts, when the center rod 315 is no longer located in the nut, the motor 41 is started to make the nut in the loading position 16 enter the punching position 17, and then the above steps are repeated to punch and mark the next nut.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, which should be included in the scope of the claims of the present disclosure.

Claims

1. A punching device for nut production, characterized in that: It comprises a loading mechanism (1), a punching mechanism (2) and a supporting mechanism (3): The object-carrying mechanism (1) comprises a bracket (11), an upper plate (12) and a lower plate (15); the lower plate (15) is fixedly connected to the top surface of the bracket (11); a mounting ring extending through the lower plate (15) extends from the bottom surface of the upper plate (12); the mounting ring is rotatably mounted in the lower plate (15); a central hole (14) is provided at the center of the top surface of the upper plate (12); The punching mechanism (2) comprises a punching frame (21), a sliding plate (22) is slidably sleeved on the punching frame (21), a first hydraulic cylinder (23) is fixedly connected to the inner top surface of the punching frame (21), a telescopic end of the first hydraulic cylinder (23) is fixedly connected to the top surface of the sliding plate (22), two symmetrical punches (24) are installed on the bottom surface of the sliding plate (22), a protruding rod (25) is fixedly connected to the center of the bottom surface of the sliding plate (22), and the protruding rod (25) is located directly above the center hole (14); The support mechanism (3) comprises a second hydraulic cylinder (31), the telescopic end of the second hydraulic cylinder (31) is fixedly connected to a fixed plate (32), the top surface of the fixed plate (32) is fixedly connected to two symmetrical end seats (33), the center of the top surface of the fixed plate (32) is fixedly connected to an intermediate seat (34), a connecting pipe (35) is fixedly connected between the end seats (33) and the intermediate seat (34) and is in communication with each other, the top surface of the end seat (33) is fixedly connected to a pressure valve (311), the outlet of the pressure valve (311) is fixedly connected to a sliding pipe (314), a center rod (315) is fixedly sleeved in the sliding pipe (314), a striking slider (316) is slidably sleeved in the sliding pipe (314), the striking slider (316) passes through the bottom of the center rod (315), an elastic membrane (318) is fixedly sleeved on the outer surface of the center rod (315), and the elastic membrane (318) is filled with fluid.

2. A nut production punching equipment according to claim 1, characterized in that: The circumferential side surface of the upper plate (12) is provided with a plurality of centrally symmetrical feed openings (13), and the top surface of the lower plate (15) is provided with a loading position (16), a punching position (17) and a lowering position (18), and the loading position (16), the punching position (17) and the lowering position (18) are each provided with two symmetrical ones, and the symmetrical loading position (16), the punching position (17) and the lowering position (18) are centrally symmetrically arranged on the lower plate (15).

3. A nut production punching equipment according to claim 2, characterized in that: The upper material position (16) is a plurality of conveying rollers fixedly mounted on the top surface of the lower plate (15), the punching position (17) is a through hole opened on the top surface of the lower plate (15), and the lower material position (18) is a notch opened on the circumferential side of the lower plate (15), and the width of the lower material position (18) is greater than the feed port (13).

4. A nut production punching equipment according to claim 3, characterized in that: A fixing frame (26) is fixedly connected to the punching frame (21); a symmetrical first slide groove (27) is provided on the side of the fixing frame (26) facing the center of the upper plate (12); a first slide rod (28) is slidably sleeved in the first slide groove (27); a positioning head (29) is fixedly connected to one end of the first slide rod (28); and a first spring (210) is elastically connected between the positioning head (29) and the first slide groove (27).

5. A nut production punching equipment according to claim 4, characterized in that: The top surface of the intermediate seat (34) is fixedly connected to a vertical tube (36), a piston head (38) is slidably sleeved inside the vertical tube (36), a second spring (37) is fixedly connected to the bottom surface of the piston head (38), and the other end of the second spring (37) is connected to the inner wall of the vertical tube (36).

6. A nut production punching equipment according to claim 5, characterized in that: The vertical pipe (36) is in communication with the connecting pipe (35), a piston block (39) is slidably sleeved in the connecting pipe (35), and a third spring (310) is elastically connected between one end of the piston block (39) and the inner side surface of the connecting pipe (35).

7. A nut production punching equipment according to claim 6, characterized in that: The connecting pipe (35) is divided into a hydraulic section and a pneumatic section by the piston block (39); the hydraulic section is from the piston head (38) to the piston block (39) and is filled with hydraulic oil; the pneumatic section is from the piston block (39) to the pressure valve (311) and is filled with air therebetween; an air intake check valve (312) is fixedly connected to the side of the end seat (33); the air intake check valve (312) is in communication with the pneumatic section.

8. A nut production punching equipment according to claim 7, characterized in that: An exhaust port (317) is provided on the side of the sliding tube (314).

9. A nut production punching equipment according to claim 8, characterized in that: The support mechanism (3) further comprises a guide ring (313), the guide ring (313) being fixedly connected to the bottom surface of the lower plate (15), and the guide ring (313) being concentric with the through hole of the punching position (17), and the bottom surface of the lower plate (15) being fixedly connected to a material discharge trough (19) located below the material discharge position (18).

10. A nut production punching equipment according to claim 9, characterized in that: The invention also comprises a power mechanism (4), the power mechanism (4) comprising a motor (41) fixedly connected to the bracket (11), the output shaft of the motor (41) being fixedly sleeved with a first gear (42), the mounting ring on the bottom surface of the upper plate (12) being fixedly sleeved with a second gear (43), the first gear (42) being meshed with the second gear (43).

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