Automatic positioning type punching machine for punching metal parts and punching method of automatic positioning type punching machine

Abstract

The invention relates to the technical field of stamping equipment, and discloses an automatic positioning type stamping machine for stamping metal parts, which comprises a stamping base and a stamping top plate fixedly connected to the upper part of the stamping base, a bearing plate is fixedly mounted on the upper part of the stamping base, and a plurality of sliding tooth holders are slidably connected to the upper part of the bearing plate; the lower portion of the bearing plate is provided with a driving unit used for enabling the sliding tooth holders to move face to face or back to back at the same time, the upper portion of the bearing plate is provided with a lower die provided with a forming cavity, a telescopic device with the telescopic effect is fixedly installed on the stamping top plate, and the telescopic end of the telescopic device is provided with an upper die matched with the lower die. And a forming bulge matched with the forming cavity is arranged at the lower part of the upper die. According to the stamping device, the effect of automatically and rapidly positioning the metal part is achieved, in the process that the forming protrusion punches the to-be-stamped part and moves downwards, the abutting plate always keeps the positioning effect on the to-be-stamped part, the efficiency after stamping of the metal part is improved, and the stamping quality of the metal part is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping equipment, in particular to an automatic positioning stamping machine for stamping metal parts and a stamping method thereof. Background Art

[0002] A stamping machine is a punching press, which is often used in the production of metal parts. The stamping process has the advantages of saving materials and energy, high efficiency, low technical requirements for operators, and the ability to produce products that cannot be achieved by mechanical processing through various mold applications. Therefore, its use is becoming more and more extensive.

[0003] In order to improve the stability when stamping metal parts, the existing technology has made many improvements to the stamping machine. For example, the patent with patent publication number CN216729007U discloses a stamping machine that is easy to position, including a processing panel, a stamping machine body and a stamping plate. The inner bottom wall of the stamping machine body is installed with a processing panel, the inner wall of the stamping machine body is slidably connected to the stamping plate, the top of the processing panel is clamped with a load-bearing plate, and stop blocks are installed around the bottom of the load-bearing plate, and the tail end of the stop block is connected to the top of the load-bearing plate. A limit seat is installed in the middle of the bottom of the load-bearing plate. The utility model increases the stability of the load-bearing plate clamping installation by arranging the processing panel, the limit seat, the load-bearing plate and the stop block. With the auxiliary action of the limit slider, the clamping plate is pushed. The position of the placement seat is convenient for placing the processed parts, and the movement of the clamping plate plays a good auxiliary clamping role, which increases the good positioning of the device, and then increases the positioning effect of the parts, increases the stability of the parts, and adds convenience to the stamping work of the device.

[0004] The above patents have obvious beneficial effects, but still have the following deficiencies in actual operation: In the above-mentioned comparative document, the position of the clamping plate is adjusted by rotating the control screw, and the clamping plate clamps and fixes the stamping part. However, in reality, the method of clamping and fixing the stamping part by manually rotating the control screw is relatively slow, and manually rotating the two control screws to clamp the stamping part cannot accurately center the stamping part, which affects the quality of the metal part after stamping and reduces the quality effect of the metal part after stamping. Therefore, this field urgently needs to improve the stamping machine to solve the defects of the existing technology. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automatic positioning punching machine for punching metal parts and a punching method thereof, which improves the efficiency of punching metal parts and also improves the punching quality of metal parts.

[0006] To achieve the above object, the present invention provides the following technical solutions: The camming mechanism that this invention relates to is that this invention relates to a kind of automatic positioning stamping machine for stamping metal parts, comprises a stamping base and a stamping top plate fixedly connected to the upper part of the stamping base, a pressure plate is fixedly installed on the upper part of the stamping base, a plurality of sliding gear seats are slidably connected to the upper part of the pressure plate, a driving unit is provided at the lower part of the pressure plate for simultaneously moving the plurality of sliding gear seats toward or away from each other, a lower die with a forming cavity is provided on the upper part of the pressure plate, a telescopic device with a telescopic effect is fixedly installed on the stamping top plate, the telescopic end of the telescopic device is provided with an upper die adapted for the lower die, a forming protrusion adapted for the forming cavity is provided at the lower part of the upper die, a movable plate which can slide and is adapted to the thickness of the lower die is provided on the upper part of the sliding gear seat, an abutment plate adapted to the thickness of the part to be stamped is provided on the upper part of the movable plate, a first wedge-shaped extrusion block with an inclined surface is fixedly installed on one side of the movable plate, a second wedge-shaped extrusion block adapted to the first wedge-shaped extrusion block is fixedly installed on multiple side surfaces of the upper die, and a main controller is provided on the side of the stamping base.

[0007] Preferably, the driving unit includes a driving motor fixedly installed at the lower part of the pressure plate and located in the stamping base, a rotating groove is provided at the upper part of the pressure plate, a rotating gear ring is rotatably connected in the rotating groove, and the side surface is in contact with the side surfaces of several sliding gear seats, a first gear fixedly installed at the output end of the driving motor is rotatably connected in the pressure plate, a plurality of sliding limit grooves and mounting grooves are arranged equidistantly along the circumference of the pressure plate and adapted to the sliding gear seat are provided at the upper part of the pressure plate, a second gear is provided in the mounting groove that meshes with both the sliding gear seat and the rotating gear ring, and a matching protective cover is fixedly installed on the upper part of the pressure plate by bolts.

[0008] Preferably, the upper side surface of the sliding gear seat is slidably connected to the first adjustment seat, and a plug-in plate is plugged into the upper part of the first adjustment seat. The plug-in plate passes through a first moving rod with one end fixedly connected to the side surface of the moving plate, and a first spring is sleeved on the side surface of the first moving rod. A sliding groove adapted to the lower end of the moving plate is opened on the upper part of the first adjustment seat, and a third limiting rod with one end passing through the plug-in plate is passed through the side surface of the first adjustment seat, and a fifth spring is fixedly installed between one side of the third limiting rod and the side surface of the first adjustment seat.

[0009] Preferably, a first adjustment groove adapted to the first adjustment seat is opened on the upper side of the sliding gear seat, and one end of the sliding gear seat passes through and is rotatably connected to a first adjustment threaded rod extending into the first adjustment groove, the first adjustment threaded rod passes through the first adjustment seat and is threadedly connected to it, and a first limiting nut is threadedly connected to the side of the first adjustment threaded rod.

[0010] Preferably, a first limiting nut with one end threadedly connected to the bottom of the installation groove passes through the second gear, and two bearings are sleeved on the side surfaces of the first limiting nut.

[0011] Preferably, several movable columns are inserted into the upper part of the lower mold, and several placement grooves are opened on the upper part of the lower mold. A hollow column adapted to the movable column is provided in the placement groove. The lower end of the movable column is inserted into the hollow column. The second spring is used in the hollow column. The upper part of the movable column is fixedly connected with an ejection plate adapted to the placement groove.

[0012] Preferably, a polygonal first plug-in block is fixedly installed at the lower part of the lower mold, and two symmetrical opening grooves and a first plug-in groove adapted to the first plug-in block are provided on the upper part of the sliding gear seat. A first limiting rod with one end extending into the first plug-in groove is inserted into the inner side wall of the opening groove, and a first limiting hole adapted to the end of the first limiting rod is provided on the side of the first plug-in block, and a third spring is provided on the side of the first limiting rod, with both ends fixed to one side of the first limiting rod and the inner side of the opening groove respectively.

[0013] Preferably, a second plug-in block is fixedly installed on the upper part of the upper mold, and a second plug-in groove adapted to the second plug-in block is provided at the telescopic lower end of the telescopic device, and two symmetrical second limit rods are passed through the side surface of the telescopic lower end of the telescopic device, and second limit holes adapted to one end of the second limit rod are provided on the opposite sides of the second plug-in block. A third wedge-shaped extrusion block with an inclined surface is fixedly installed on the outer end of the second limit rod, and a fourth spring is fixedly installed between the third wedge-shaped extrusion block and the side surface of the telescopic device, and two fourth wedge-shaped extrusion blocks adapted to the third wedge-shaped extrusion block are fixedly installed on the lower part of the stamping top plate.

[0014] Preferably, the lower part of the stamping top plate is slidably connected to several second adjustment seats, the lower part of the second adjustment seat is fixedly installed with an elastic auxiliary elastic plate, the lower end side of the auxiliary elastic plate is fixedly connected with a supporting wedge block adapted to the upper mold, and the lower part of the stamping top plate is provided with two symmetrical second adjustment grooves adapted to the second adjustment seat, and the stamping top plate is penetrated by a second adjustment threaded rod extending into the second adjustment groove. When the second adjustment threaded rod rotates, the two second adjustment seats located in the second adjustment groove move toward or away from each other, and the side of the second adjustment threaded rod is threadedly connected with a second limit nut.

[0015] In a second aspect, the present invention discloses an automatic positioning stamping method for stamping metal parts, including the above-mentioned automatic positioning stamping machine for stamping metal parts, the method comprising the following steps: S1: Select the appropriate lower die and upper die and install them. Install the lower die on the upper part of the sliding gear holder through the cooperation of the first limiting rod and the third spring. Install the upper die on the lower end of the telescopic device through the cooperation of the second limiting rod and the second plug-in block. The lower die and upper die need to be calibrated during installation. S2: Select the appropriate number of sliding gear holders according to the shape of the workpiece to be stamped, place them in the sliding limit slots at the corresponding positions, and install the second gear through the cooperation of the positioning bolts and bearings; S3: Selecting a suitable movable plate and abutment plate according to the thickness of the lower die and the side shape of the workpiece to be stamped, and installing the movable plate on the upper part of the first adjustment seat through the plug-in plate, the third limiting rod and the fifth spring; S4: Adjust the position of the movable plate on each sliding gear seat according to the shape of the workpiece to be stamped. The position of the movable plate on the sliding gear seat can be adjusted by rotating the first adjusting threaded rod; S5: The workpiece to be stamped is placed on the upper part of the lower die, and its side is roughly aligned with the movable plate. The main controller turns on the drive motor to drive several sliding gear seats to move toward each other at the same time. The abutment plate abuts against the side of the workpiece to be stamped, and the workpiece to be stamped is quickly centered and positioned. S6: Turn on the telescopic device, and the telescopic end of the telescopic device drives the upper die to move downward. When the forming protrusion contacts the upper part of the workpiece to be stamped, the second wedge-shaped extrusion block contacts the first wedge-shaped extrusion block. The second wedge-shaped extrusion block adapts the speed of the first wedge-shaped extrusion block to the speed of the forming protrusion to stamp the workpiece to be stamped. During the process of the forming protrusion stamping the workpiece downward, the abutment plate always maintains the positioning effect of the workpiece to be stamped. When the upper die moves down to the bottom position, the ejector plate moves down. After the upper die moves up, the ejector plate pushes the workpiece to be stamped upward; S8: When replacing the upper die, the positions of several auxiliary elastic plates are adjusted, and the telescopic device drives the upper die to move up to a position close to the stamping top plate. The fourth wedge-shaped extrusion block squeezes the third wedge-shaped extrusion block, so that the second limiting rod is disengaged from the second limiting hole, and the upper die automatically falls onto several supporting wedge blocks.

[0016] In view of the shortcomings of the prior art, the present invention provides an automatic positioning punching machine for punching metal parts and a punching method thereof, which overcomes the shortcomings of the prior art. The beneficial effects of the present invention are: 1. In the present invention, a driving unit is used to simultaneously drive several sliding gear seats to move toward or away from each other, thereby achieving the effect of automatic and rapid positioning of metal parts. The second wedge-shaped extrusion block adapts the speed of the first wedge-shaped extrusion block to the speed of the forming protrusion to stamp the part to be stamped. During the process of the forming protrusion stamping the part to be stamped downward, the abutment plate always maintains the positioning effect on the part to be stamped, ensuring that the position of the metal part will not shift during the stamping process, thereby improving the efficiency of the metal part after stamping, and also improving the stamping quality of the metal part. It can also perform centering and positioning on metal parts of different shapes in a wide range, thereby improving the scope of application of the device.

[0017] 2. In the present invention, when it is necessary to position the part to be stamped with irregular side surfaces, the first adjusting threaded rod is rotated, and the first adjusting seat is driven to slide in the first adjusting groove when the first adjusting threaded rod is rotated. Then, the first limiting nut is tightened to limit and fix the position of the first adjusting threaded rod, thereby improving the applicable range of the positioning device.

[0018] 3. In the present invention, when the workpiece to be stamped is completely stamped, the ejector plate moves downward under pressure, and the second spring is compressed. When the upper mold rises, the elastic force of the second spring pushes the movable column to move upward in the hollow column, and the ejector plate pushes the edge of the formed workpiece to be stamped upward, so that the workpiece to be stamped is separated from the forming cavity, making it easier for the operator to take out the workpiece to be stamped.

[0019] 4. In the present invention, when installing the lower mold, pull the first limit rod in the direction away from the first plug-in slot. At this time, the third spring is stretched, and the first plug-in block at the lower part of the lower mold is plugged into the first plug-in slot. Release the first limit rod. At this time, the tension of the third spring pulls the first limit rod to move, and one end of the first limit rod is plugged into the first limit hole on the side of the first plug-in block. The installation of the lower mold can be completed, which is convenient for the installation or later replacement of the lower mold.

[0020] 5. In the present invention, the cooperation of the second plug-in block, the second limiting rod, the fourth spring, the fourth wedge-shaped extrusion block and the third wedge-shaped extrusion block facilitates the installation or disassembly of the upper mold.

[0021] 6. In the present invention, by means of the elastic auxiliary elastic plate and the supporting wedge block with a beveled lower side, when the upper mold is disassembled, the upper mold falls on several supporting wedge blocks, thereby improving the safety of disassembling the upper mold. At the same time, in conjunction with the second adjusting threaded rod that can adjust the position of the auxiliary elastic plate, it is convenient to adjust different upper molds.

[0022] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a schematic structural diagram of the present invention as a whole when viewed from above; Figure 3 It is a schematic structural diagram of the overall cross-section of the present invention; Figure 4 It is a schematic diagram of the structure inside the pressure plate of the present invention; Figure 5 Schematic diagram of the structure of the rotating gear ring in the present invention; Figure 6 Schematic diagram of the structure of the second wedge-shaped extrusion block in the present invention; Figure 7 for Figure 2 A in the middle is an enlarged structural diagram; Figure 8 for Figure 3 The enlarged structural diagram at B in the middle; Figure 9 for Figure 3 The enlarged structural diagram at C in the middle; Figure 10 for Figure 3 The enlarged structural diagram at D in the middle; Figure 11 for Figure 3 The enlarged structural diagram at E in the middle; Figure 12 for Figure 3 The enlarged structural diagram at F in the middle; Figure 13 for Figure 4 The schematic diagram of the structure at G in the middle is enlarged; Figure 14 for Figure 4 Enlarged structural diagram at H in the middle.

[0025] In the figure: 1. stamping base; 2. stamping top plate; 3. pressure plate; 4. sliding gear seat; 5. lower die; 6. forming cavity; 7. upper die; 8. forming protrusion; 9. telescopic device; 10. moving plate; 11. abutting plate; 12. first wedge-shaped extrusion block; 13. part to be stamped; 14. second wedge-shaped extrusion block; 15. main controller; 16. driving motor; 17. rotating groove; 18. rotating gear ring; 19. first gear; 20. sliding limit groove; 21. second gear; 22. mounting groove; 23. plug-in board; 24. first moving rod; 25. first spring; 26. slide groove; 27. first adjusting seat; 28. first adjusting groove; 29. ​​first adjusting threaded rod; 30. first limit nut; 31. positioning screw Bolt; 32. Bearing; 33. Movable column; 34. Placement slot; 35. Hollow column; 36. Second spring; 37. Ejector plate; 38. First plug-in block; 39. First plug-in slot; 40. Open slot; 41. First limiting rod; 42. Third spring; 43. First limiting hole; 44. Second plug-in block; 45. Second plug-in slot; 46. Second limiting rod; 47. Third wedge-shaped extrusion block; 48. Fourth spring; 49. Second limiting hole; 51. Auxiliary elastic plate; 52. Supporting wedge block; 53. Second adjustment seat; 54. Second adjustment slot; 55. Second adjusting threaded rod; 56. Second limiting nut; 57. Protective cover; 58. Fourth wedge-shaped extrusion block; 59. Third limiting rod; 60. Fifth spring. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0027] See also Figures 1-14 The cam 24 is a kind of cam 24 that is fixed on the upper part of the cam 24, and the cam 24 is a kind of cam 24 that is fixed on the upper part of the cam 24. A second wedge-shaped extrusion block 14 is adapted to the block 12, a main controller 15 is provided on the side of the stamping base 1, the driving unit includes a driving motor 16 fixedly mounted on the lower part of the pressure plate 3 and located in the stamping base 1, a rotating groove 17 is provided on the upper part of the pressure plate 3, and a rotating gear ring 18 is rotatably connected in the rotating groove 17, whose side is in contact with the side surfaces of several sliding gear seats 4, a first gear 19 fixedly mounted on the output end of the driving motor 16 is rotatably connected in the pressure plate 3, a plurality of sliding limit grooves 20 and an installation groove 22 are arranged equidistantly along the circumference of the pressure plate 3 and adapted to the sliding gear seat 4 are provided on the upper part of the pressure plate 3, a second gear 21 is provided in the installation groove 22 which is meshed with the sliding gear seat 4 and the rotating gear ring 18, an adapted protective cover plate 57 is fixedly installed on the upper part of the pressure plate 3 by bolts, and a first limiting nut 30 is passed through the second gear 21, one end of which is threadedly connected to the bottom of the installation groove 22, and two bearings 32 are sleeved on the side of the first limiting nut 30.

[0028] Specifically, when it is necessary to perform deformation stamping on the metal part 13 to be stamped, an appropriate number of sliding gear seats 4 are selected and placed in the sliding limit groove 20, and the corresponding second gear 21 is installed in the installation groove 22 position, and the bearings 32 are located on the upper and lower sides of the second gear 21. The second gear 21 is penetrated by the positioning bolt 31 and the end of the positioning bolt 31 is threadedly connected to the bottom of the installation groove 22. The second gear 21 is located between the two thrust roller bearings 32 to reduce the friction coefficient encountered by the second gear 21 when rotating. The part 13 to be stamped is placed on the upper part of the lower die 5, and its side position is roughly aligned with several movable plates 10. The drive motor 16 is turned on. The output end of the drive motor 16 drives the first gear 19 to rotate, and the first gear 19 drives the rotating gear ring 18 to rotate. The rotating gear ring 18 drives several second gears 21 to rotate, and the second gear 21 drives the sliding gear seat 4 slides, and several movable plates 10 simultaneously drive the abutment plates 11 to abut against the side of the workpiece 13 to be stamped. The protective cover plate 57 is used to protect the upper part of the pressure plate 3. The telescopic device 9 is opened, and the telescopic end of the telescopic device 9 drives the upper die 7 to move downward. When the forming protrusion 8 contacts the upper part of the workpiece 13 to be stamped, the second wedge-shaped extrusion block 14 contacts the first wedge-shaped extrusion block 12. The second wedge-shaped extrusion block 14 squeezes the first wedge-shaped extrusion block 12 and adapts the speed of the forming protrusion 8 to stamping the workpiece 13 to be stamped. During the process of the forming protrusion 8 stamping the workpiece 13 downward, the abutment plate 11 always maintains the positioning effect of the workpiece 13 to be stamped, which not only realizes the effect of automatic and rapid positioning of the metal part (i.e., the workpiece 13 to be stamped), but also ensures that the position of the metal part will not shift during the stamping process, thereby improving the efficiency of the metal part after stamping and also improving the stamping quality of the metal part.

[0029] As a technical optimization solution of the present invention, a first adjustment seat 27 is slidably connected to the upper side of the sliding gear seat 4, and a plug-in plate 23 is plugged into the upper part of the first adjustment seat 27. A first moving rod 24 with one end fixedly connected to the side of the movable plate 10 is passed through the plug-in plate 23, and a first spring 25 is sleeved on the side of the first moving rod 24. A sliding groove 26 adapted to the lower end of the movable plate 10 is opened on the upper part of the first adjustment seat 27, and a third limiting rod 59 with one end passing through the plug-in plate 23 is passed through the side of the first adjustment seat 27. A fifth spring 60 is fixedly installed between one side of the third limiting rod 59 and the side of the first adjustment seat 27.

[0030] Specifically, select the appropriate movable plate 10 and abutment plate 11 for installation. During installation, pull the third limit rod 59 in the direction away from the first adjustment seat 27. At this time, the fifth spring 60 is stretched, and the plug-in plate 23 is plugged into the upper part of the first adjustment seat 27. Release the third limit rod 59, and the fifth spring 60 contracts to drive one end of the third limit rod 59 to be plugged into the plug-in plate 23, so as to complete the positioning of the movable plate 10 and the abutment plate 11. When the second wedge-shaped extrusion block 14 squeezes the first wedge-shaped extrusion block 12, the lower end of the movable plate 10 slides in the slide groove 26 to limit the movable plate 10. At the same time, the first movable rod 24 ensures the radial deformation of the first spring 25.

[0031] As a technical optimization solution of the present invention, a first adjustment groove 28 adapted to the first adjustment seat 27 is opened on the upper side of the sliding gear seat 4, and one end of the sliding gear seat 4 is penetrated and rotatably connected to a first adjustment threaded rod 29 extending into the first adjustment groove 28. The first adjustment threaded rod 29 penetrates the first adjustment seat 27 and is threadedly connected thereto, and a first limiting nut 30 is threadedly connected to the side of the first adjustment threaded rod 29.

[0032] Specifically, when it is necessary to position the part to be stamped 13 with irregular side surfaces, the first adjusting threaded rod 29 is rotated, and the first adjusting threaded rod 29 drives the first adjusting seat 27 to slide in the first adjusting groove 28, and then the first limiting nut 30 is tightened to limit and fix the position of the first adjusting threaded rod 29, thereby improving the applicable range of the positioning device.

[0033] As a technical optimization solution of the present invention, several movable columns 33 are inserted into the upper part of the lower mold 5, and several placement grooves 34 are opened on the upper part of the lower mold 5. A hollow column 35 adapted to the movable column 33 is provided in the placement groove 34. The lower end of the movable column 33 is inserted into the hollow column 35. The second spring 36 is used in the hollow column 35. The upper part of the movable column 33 is fixedly connected to an ejection plate 37 adapted to the placement groove 34.

[0034] Specifically, when the part to be stamped 13 is completely stamped, the ejector plate 37 moves downward under pressure, and the second spring 36 is compressed. When the upper mold 7 rises, the elastic force of the second spring 36 pushes the movable column 33 to move upward in the hollow column 35, and the ejector plate 37 pushes the edge of the formed part to be stamped 13 to move upward, so that the part to be stamped 13 is separated from the forming cavity 6, making it easier for the operator to take out the part to be stamped 13. At the same time, the hollow column 35, the second spring 36, the movable column 33 and the ejector plate 37 can be reused.

[0035] As a technical optimization solution of the present invention, a polygonal first plug-in block 38 is fixedly installed at the lower part of the lower mold 5, and two symmetrical opening grooves 40 and a first plug-in groove 39 adapted to the first plug-in block 38 are provided on the upper part of the sliding gear seat 4. A first limiting rod 41 with one end extending into the first plug-in groove 39 is inserted into the inner side wall of the opening groove 40, and a first limiting hole 43 adapted to the end of the first limiting rod 41 is provided on the side of the first plug-in block 38. A third spring 42 with two ends fixedly installed on one side of the first limiting rod 41 and the inner side of the opening groove 40 respectively.

[0036] Specifically, when installing the lower mold 5, pull the first limit rod 41 in the direction away from the first plug-in slot 39. At this time, the third spring 42 is stretched, and the first plug-in block 38 at the bottom of the lower mold 5 is inserted into the first plug-in slot 39. Release the first limit rod 41. At this time, the pulling force of the third spring 42 pulls the first limit rod 41 to move, and one end of the first limit rod 41 is inserted into the first limit hole 43 on the side of the first plug-in block 38. The installation of the lower mold 5 can be completed, which is convenient for the installation or later replacement of the lower mold 5.

[0037] As a technical optimization solution of the present invention, a second plug-in block 44 is fixedly installed on the upper part of the upper mold 7, and a second plug-in groove 45 adapted to the second plug-in block 44 is opened at the telescopic lower end of the telescopic device 9. Two symmetrical second limit rods 46 are passed through the side surface of the telescopic lower end of the telescopic device 9, and second limit holes 49 adapted to one end of the second limit rod 46 are opened on the opposite sides of the second plug-in block 44. A third wedge-shaped extrusion block 47 with an inclined surface is fixedly installed at the external end of the second limit rod 46, and a fourth spring 48 is fixedly installed between the third wedge-shaped extrusion block 47 and the side surface of the telescopic device 9. Two fourth wedge-shaped extrusion blocks 58 adapted to the third wedge-shaped extrusion block 47 are fixedly installed at the lower part of the stamping top plate 2.

[0038] Specifically, when the upper mold 7 needs to be installed, the second plug-in block 44 on the upper part of the upper mold 7 is aligned with the second plug-in slot 45 at the lower end of the telescopic device 9. The side surface of one end of the second limiting rod 46 and the upper side surface of the second plug-in block 44 are both provided with adaptive chamfers. The upper mold 7 is pushed upward with force, and the second plug-in block 44 squeezes the second limiting rod 46. When the second plug-in block 44 is fully inserted into the second plug-in slot 45, the second limiting rod 46 is pulled by the fourth spring 48. The end is automatically inserted into the second limiting hole 49 to complete the installation of the upper mold 7. When the upper mold 7 needs to be disassembled, the telescopic device 9 drives the upper mold 7 to move upward. When the third wedge-shaped extrusion block 47 contacts the fourth wedge-shaped extrusion block 58, the fourth wedge-shaped extrusion block 58 squeezes the third wedge-shaped extrusion block 47, so that the second limiting rod 46 is away from the second plug-in block 44. When one end of the second limiting rod 46 is disengaged from the second limiting hole 49, the upper mold 7 can be taken out, which is convenient for the installation or later replacement of the upper mold 7.

[0039] As a technical optimization solution of the present invention, the lower part of the stamping top plate 2 is slidably connected to several second adjustment seats 53, and the lower part of the second adjustment seat 53 is fixedly installed with an elastic auxiliary elastic plate 51, and the lower end side of the auxiliary elastic plate 51 is fixedly connected with a supporting wedge block 52 adapted to the upper mold 7. The lower part of the stamping top plate 2 is provided with two symmetrical second adjustment grooves 54 adapted to the second adjustment seat 53. The stamping top plate 2 is penetrated by a second adjustment threaded rod 55 extending into the second adjustment groove 54. When the second adjustment threaded rod 55 rotates, the two second adjustment seats 53 located in the second adjustment groove 54 move toward or away from each other, and the side of the second adjustment threaded rod 55 is threadedly connected with a second limit nut 56.

[0040] When the second adjusting threaded rod 55 is rotated, the second adjusting threaded rod 55 is located in the second adjusting groove 54 with the inner side threads thereof being symmetrical and in opposite directions. When the second adjusting threaded rod 55 is rotated, the second adjusting seat 53 is driven to move in the second adjusting groove 54, adjusting the position of the supporting wedge block 52 and the auxiliary elastic plate 51 to a position adapted to the upper mold 7, and locking the second limiting nut 56 to position the position of the second adjusting threaded rod 55. The telescopic device 9 drives the upper mold 7 to move upward, and cooperates with the elastic auxiliary elastic plate 51 and the supporting wedge block 52 with a beveled lower side, and the upper mold 7 passes over the supporting wedge block 52, and then the third wedge-shaped extrusion block 47 contacts the fourth wedge-shaped extrusion block 58. When the end of the second limiting rod 46 is disengaged from the second limiting hole 49, the upper mold 7 falls on several supporting wedge blocks 52, which makes it more convenient to disassemble the upper mold 7. Example

[0041] See also Figures 1-14 A method for automatically positioning a metal stamping part includes an automatic positioning stamping machine for stamping a metal stamping part according to the above embodiment, the method comprising the following steps: S1: Select the appropriate lower die 5 and upper die 7 and install them. The lower die 5 is installed on the upper part of the sliding gear seat 4 through the cooperation of the first limiting rod 41 and the third spring 42. The upper die 7 is installed on the lower end of the telescopic device 9 through the cooperation of the second limiting rod 46 and the second plug-in block 44. The lower die 5 and the upper die 7 need to be calibrated during installation; S2: Select the appropriate number of sliding gear holders 4 according to the shape of the workpiece 13 to be stamped, and place them in the sliding limit grooves 20 at the corresponding positions, and install the second gear 21 through the cooperation of the positioning bolts 31 and the bearings 32; S3: According to the thickness of the lower die 5 and the side shape of the workpiece 13 to be punched, the matching movable plate 10 and abutment plate 11 are selected, and the movable plate 10 is installed on the upper part of the first adjustment seat 27 through the plug-in plate 23, the third limiting rod 59 and the fifth spring 60; S4: Adjust the position of the movable plate 10 on each sliding gear seat 4 according to the shape of the workpiece 13 to be punched. The position of the movable plate 10 on the sliding gear seat 4 can be adjusted by rotating the first adjusting threaded rod 29; S5: The workpiece 13 to be stamped is placed on the upper part of the lower die 5, and its side is roughly aligned with the movable plate 10. The main controller 15 turns on the drive motor 16, driving the plurality of sliding gear seats 4 to move toward each other at the same time. The abutment plate 11 abuts against the side of the workpiece 13 to be stamped, and the workpiece 13 to be stamped is quickly centered and positioned. S6: Turn on the telescopic device 9. The telescopic end of the telescopic device 9 drives the upper die 7 to move downward. When the forming protrusion 8 contacts the upper part of the workpiece 13 to be stamped, the second wedge-shaped extrusion block 14 contacts the first wedge-shaped extrusion block 12. The second wedge-shaped extrusion block 14 squeezes the first wedge-shaped extrusion block 12 and adapts the speed of the forming protrusion 8 to stamp the workpiece 13 to be stamped. During the process of the forming protrusion 8 stamping the workpiece 13 downward, the abutment plate 11 always maintains the positioning effect of the workpiece 13 to be stamped. When the upper die 7 moves down to the bottom position, the ejector plate 37 moves down. After the upper die 7 moves upward, the ejector plate 37 pushes the workpiece 13 to be stamped upward. S8: When replacing the upper die 7, the positions of several auxiliary elastic plates 51 are adjusted, and the telescopic device 9 drives the upper die 7 to move up to a position close to the stamping top plate 2. The fourth wedge-shaped extrusion block 58 squeezes the third wedge-shaped extrusion block 47, so that the second limiting rod 46 is disengaged from the second limiting hole 49, and the upper die 7 automatically falls onto several supporting wedge blocks 52.

[0042] Among them, all the above-mentioned electrical products can be purchased on the market. They are mature technologies and have been fully disclosed, so they are not repeated in the specification. All the above-mentioned electrical products are equipped with power connection lines, and they are electrically connected to the main controller 15 and 220V phase voltage (or 380V line voltage) through the power lines, and the main controller 15 can be a conventional known device such as a computer that plays a control role.

[0043] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic positioning punching machine for punching metal parts, comprising a punching base (1) and a punching top plate (2) fixedly connected to the upper part of the punching base (1), characterized in that: A pressure plate (3) is fixedly mounted on the upper portion of the stamping base (1), a plurality of sliding tooth seats (4) are slidably connected to the upper portion of the pressure plate (3), a driving unit for simultaneously moving the plurality of sliding tooth seats (4) toward or away from each other is provided on the lower portion of the pressure plate (3), a lower die (5) with a forming cavity (6) is provided on the upper portion of the pressure plate (3), a telescopic device (9) with a telescopic effect is fixedly mounted on the stamping top plate (2), a telescopic end portion of the telescopic device (9) is provided with an upper die (7) adapted to the lower die (5), and a lower portion of the upper die (7) is provided with a forming cavity (6) A forming protrusion (8) adapted to the cavity (6) is provided, a movable plate (10) capable of sliding and adapted to the thickness of the lower die (5) is provided on the upper portion of the sliding tooth seat (4), an abutment plate (11) adapted to the thickness of the part to be punched (13) is provided on the upper portion of the movable plate (10), a first wedge-shaped extrusion block (12) having an inclined surface is fixedly mounted on one side of the movable plate (10), second wedge-shaped extrusion blocks (14) adapted to the first wedge-shaped extrusion block (12) are fixedly mounted on multiple side surfaces of the upper die (7), and a main controller (15) is provided on the side of the punching base (1).

2. The automatic positioning punching machine for punching metal parts according to claim 1, characterized in that: The driving unit includes a driving motor (16) fixedly mounted on the lower part of the pressure plate (3) and located in the stamping base (1); a rotating groove (17) is provided on the upper part of the pressure plate (3); a rotating gear ring (18) whose side surface is in contact with the side surfaces of a plurality of sliding gear seats (4) is rotatably connected in the rotating groove (17); a first gear (19) fixedly mounted on the output end of the driving motor (16) is rotatably connected in the pressure plate (3); a plurality of sliding limit grooves (20) and an installation groove (22) are provided on the upper part of the pressure plate (3) and are arranged equidistantly along the circumference of the pressure plate (3) and are adapted to the sliding gear seats (4); a second gear (21) meshing with both the sliding gear seats (4) and the rotating gear ring (18) is provided in the installation groove (22); and an adapted protective cover plate (57) is fixedly mounted on the upper part of the pressure plate (3) by bolts.

3. The automatic positioning punching machine for punching metal parts according to claim 1, characterized in that: The upper side of the sliding gear seat (4) is slidably connected to a first adjustment seat (27), a plug-in plate (23) is plugged into the upper part of the first adjustment seat (27), a first moving rod (24) having one end fixedly connected to the side of the movable plate (10) is passed through the plug-in plate (23), a first spring (25) is sleeved on the side of the first moving rod (24), a sliding groove (26) adapted to the lower end of the movable plate (10) is opened on the upper part of the first adjustment seat (27), a third limiting rod (59) having one end passing through the plug-in plate (23) is passed through the side of the first adjustment seat (27), and a fifth spring (60) is fixedly installed between one side of the third limiting rod (59) and the side of the first adjustment seat (27).

4. The automatic positioning punching machine for punching metal parts according to claim 3, characterized in that: A first adjustment groove (28) adapted to the first adjustment seat (27) is provided on the upper side of the sliding tooth seat (4); one end of the sliding tooth seat (4) is penetrated and rotatably connected to a first adjustment threaded rod (29) extending into the first adjustment groove (28); the first adjustment threaded rod (29) penetrates the first adjustment seat (27) and is threadedly connected thereto; a first limiting nut (30) is threadedly connected to the side of the first adjustment threaded rod (29).

5. The automatic positioning punching machine for punching metal parts according to claim 2, characterized in that: The second gear (21) is penetrated by a first limiting nut (30) whose end is threadedly connected to the bottom of the mounting groove (22). Two bearings (32) are sleeved on the side surfaces of the first limiting nut (30).

6. The automatic positioning punching machine for punching metal parts according to claim 1, characterized in that: A plurality of movable columns (33) are inserted into the upper portion of the lower mold (5), and a plurality of placement grooves (34) are opened on the upper portion of the lower mold (5). A hollow column (35) adapted to the movable column (33) is provided in the placement groove (34). The lower end of the movable column (33) is inserted into the hollow column (35). The second spring (36) is provided in the hollow column (35). The upper portion of the movable column (33) is fixedly connected to an ejection plate (37) adapted to the placement groove (34).

7. The automatic positioning punching machine for punching metal parts according to claim 1, characterized in that: A polygonal first plug-in block (38) is fixedly installed at the lower part of the lower mold (5), two symmetrical opening grooves (40) and a first plug-in groove (39) adapted to the first plug-in block (38) are provided on the upper part of the sliding gear seat (4), a first limiting rod (41) having one end extending into the first plug-in groove (39) is inserted into the inner side wall of the opening groove (40), a first limiting hole (43) adapted to the end of the first limiting rod (41) is provided on the side surface of the first plug-in block (38), and a third spring (42) is sleeved on the side surface of the first limiting rod (41), the two ends of which are respectively fixed to one side of the first limiting rod (41) and the inner side of the opening groove (40).

8. The automatic positioning punching machine for punching metal parts according to claim 1, characterized in that: A second plug-in block (44) is fixedly installed on the upper part of the upper mold (7), a second plug-in slot (45) adapted to the second plug-in block (44) is opened at the telescopic lower end of the telescopic device (9), two symmetrical second limiting rods (46) are penetrated by the side surface of the telescopic lower end of the telescopic device (9), and second limiting holes (49) adapted to one end of the second limiting rod (46) are opened on the opposite side surfaces of the second plug-in block (44), a third wedge-shaped extrusion block (47) with an inclined surface is fixedly installed on the outer end of the second limiting rod (46), a fourth spring (48) is fixedly installed between the third wedge-shaped extrusion block (47) and the side surface of the telescopic device (9), and two fourth wedge-shaped extrusion blocks (58) adapted to the third wedge-shaped extrusion block (47) are fixedly installed on the lower part of the stamping top plate (2).

9. The automatic positioning punching machine for punching metal parts according to claim 8, characterized in that: The lower part of the stamping top plate (2) is slidably connected to a plurality of second adjustment seats (53), the lower part of the second adjustment seat (53) is fixedly installed with an elastic auxiliary elastic plate (51), the lower end side of the auxiliary elastic plate (51) is fixedly connected with a supporting wedge block (52) adapted to the upper mold (7), the lower part of the stamping top plate (2) is provided with two symmetrical second adjustment grooves (54) adapted to the second adjustment seat (53), the stamping top plate (2) is penetrated by a second adjustment threaded rod (55) extending into the second adjustment groove (54), when the second adjustment threaded rod (55) rotates, the two second adjustment seats (53) located in the second adjustment groove (54) move toward or away from each other, and the side of the second adjustment threaded rod (55) is threadedly connected with a second limiting nut (56).

10. An automatic positioning stamping method for stamping metal parts, characterized in that: An automatic positioning punching machine for punching metal parts according to any one of 1 to 9 above, the method comprising the following steps: S1: Select the appropriate lower die (5) and upper die (7) and install them. The lower die (5) is installed on the upper part of the sliding gear seat (4) through the cooperation of the first limiting rod (41) and the third spring (42). The upper die (7) is installed on the lower end of the telescopic device (9) through the cooperation of the second limiting rod (46) and the second plug-in block (44). The lower die (5) and the upper die (7) need to be calibrated during installation. S2: Selecting a suitable number of sliding gear seats (4) according to the shape of the part to be punched (13), placing them in the sliding limit grooves (20) at corresponding positions, and installing the second gear (21) through the cooperation of the positioning bolts (31) and the bearings (32); S3: According to the thickness of the lower die (5) and the side shape of the part to be punched (13), a suitable movable plate (10) and abutment plate (11) are selected, and the movable plate (10) is installed on the upper part of the first adjustment seat (27) through the plug-in plate (23), the third limiting rod (59) and the fifth spring (60); S4: adjusting the position of the movable plate (10) on each sliding tooth seat (4) according to the shape of the part to be punched (13), and adjusting the position of the movable plate (10) on the sliding tooth seat (4) by rotating the first adjusting threaded rod (29); S5: The workpiece (13) to be punched is placed on the upper part of the lower die (5), and its side is roughly aligned with the movable plate (10). The main controller (15) turns on the driving motor (16), driving a plurality of sliding gear seats (4) to move toward each other at the same time. The abutment plate (11) abuts against the side of the workpiece (13) to be punched, and the workpiece (13) to be punched is quickly centered and positioned. S6: Open the telescopic device (9), the telescopic end of the telescopic device (9) drives the upper die (7) to move downward, and when the forming protrusion (8) contacts the upper part of the part to be stamped (13), the second wedge-shaped extrusion block (14) contacts the first wedge-shaped extrusion block (12), and the second wedge-shaped extrusion block (14) extrudes the first wedge-shaped extrusion block (12) and adapts the speed of the forming protrusion (8) to the stamping part (13). During the process of the forming protrusion (8) stamping the part to be stamped (13) downward, the abutment plate (11) always maintains the positioning effect on the part to be stamped (13). When the upper die (7) moves downward to the bottom position, the ejector plate (37) moves downward. After the upper die (7) moves upward, the ejector plate (37) pushes the part to be stamped (13) upward; S8: When the upper die (7) is replaced, the positions of the several auxiliary elastic plates (51) are adjusted, and the telescopic device (9) drives the upper die (7) to move up to a position close to the stamping top plate (2). The fourth wedge-shaped extrusion block (58) squeezes the third wedge-shaped extrusion block (47), so that the second limiting rod (46) is disengaged from the second limiting hole (49), and the upper die (7) automatically falls onto the several supporting wedge blocks (52).

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