Automatic blanking device of punching machine

Abstract

The utility model provides an automatic blanking device of a punching machine, which comprises a bearing plate and a U-shaped frame fixed on the top of the bearing plate through a bolt, the inner side of the U-shaped frame is rotatably connected with a rotating arm, the side wall of the rotating arm is provided with a material taking assembly, and the bearing plate is provided with a material stacking assembly. The stacking assembly comprises a first bearing table in sliding fit with the top of the bearing plate and a fixing plate fixedly connected to the top of the first bearing table, a plurality of limiting rods arranged in the radial direction are welded to the top of the fixing plate, the material taking assembly comprises a second bearing table, an electromagnet and an elastic contact, and the second bearing table is fixed to the top of the rotating arm through a bolt. The electromagnet and the elastic contact are fixedly connected to the top of the second bearing table. Through the arrangement of the limiting rod and the fixing plate, after being taken down by the material taking assembly, stamped workpieces are placed on the top of the fixing plate, and the workpieces are limited by the limiting rod, so that the workpieces are stacked in a unified and tidy mode, mutual friction damage between the workpieces caused by irregular stacking is avoided, and the quality of the workpieces is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of punching machines, in particular to an automatic blanking device for punching machines. Background Art

[0002] A punch press is a machine tool used for stamping metal sheets. Its main principle is to place the metal sheet on the machine tool through a mold, and then use pressure and impact force to make the metal sheet undergo plastic deformation and finally form it. The stamped workpiece will be adsorbed on the mold, so an automatic blanking device is needed to remove the workpiece and collect it uniformly.

[0003] After searching, the Chinese patent publication number CN213826758U discloses an automatic blanking device for a punch press, including a punch press, a clamping plate slidably connected to the lower end of the punch press, a lifting rod slidably connected to the lower inner wall of the clamping plate, the end of the lifting rod is rotatably connected to the first gear, the surface of the first gear is meshed with the second gear, connecting rods are movably connected to both sides of the clamping plate, the top of the connecting rod is fixedly connected to a blanking platform, a conveyor belt is provided inside the blanking platform, a buffer box is welded to the bottom of the blanking platform, a fixed block is fixedly installed on the inner wall of the buffer box, a first limit block is fixedly connected to one side of the fixed block, a first spring is fixedly installed at the end of the first limit block, a second limit block is fixedly connected to the lower end of the fixed block, a second spring is fixedly installed at the end of the second limit block, and a base is welded to the bottom of the buffer box.

[0004] The above patent has the following shortcomings: it can transport the workpieces to the receiving rack for unified collection by setting up a conveyor belt, but the receiving rack cannot stack the workpieces neatly, and the irregular stacking of the workpieces in the receiving rack can easily cause collisions and scratches between the workpieces, thereby affecting the quality of the workpieces.

[0005] For this reason, this novel example proposes an automatic blanking device for a punch press. Utility Model Content

[0006] In view of this, the embodiments of the present utility model hope to provide an automatic blanking device for a punch press to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is implemented as follows: an automatic blanking device for a punch press comprises a bearing plate and a U-shaped frame fixed to the top of the bearing plate by bolts, a rotating arm is rotatably connected to the inner side of the U-shaped frame, a material picking assembly is arranged on the side wall of the rotating arm, and a material stacking assembly is arranged on the bearing plate, the material stacking assembly comprises a bearing platform 1 which is slidably matched with the top of the bearing plate and a fixed plate which is fixedly connected to the top of the bearing platform 1, and a plurality of radially arranged limit rods are welded on the top of the fixed plate.

[0008] In some embodiments, the material picking assembly includes a second carrier platform, an electromagnet and an elastic contact. The second carrier platform is fixed to the top of the rotating arm by bolts, and the electromagnet and the elastic contact are fixedly connected to the top of the second carrier platform.

[0009] In some embodiments, a driving assembly is provided on one side of the supporting plate, and the driving assembly includes a rotating shaft, a liquid storage tank 1 and a liquid storage tank 2. The liquid storage tank 1 is filled with hydraulic oil, and the cross-section of the liquid storage tank 1 is larger than the cross-section of the liquid storage tank 2. The rotating arm is rotatably connected to the inner side of the U-shaped frame through a rotating shaft.

[0010] In some embodiments, one end of the rotating shaft passes through the U-shaped frame and is fixed with a cam, and the other end of the rotating shaft is fixedly connected to a bidirectional motor through a coupling, and the bidirectional motor is fixed to the side wall of the U-shaped frame by bolts.

[0011] In some embodiments, the liquid storage tank 1 is fixedly connected to the side wall of the U-shaped frame, a push rod 1 is slidably fitted on the top of the liquid storage tank 1, a piston 1 is fixedly connected to the end of the push rod 1 located on the inner side of the liquid storage tank 1, and a spring is buckled on the opposite side of the liquid storage tank 1 and the push rod 1.

[0012] In some embodiments, the second liquid storage tank is fixed to the top of the supporting plate through a bracket, the bottom of the first liquid storage tank is fixed and connected with a connecting pipe, and the other end of the connecting pipe is fixedly connected and connected to the second liquid storage tank.

[0013] In some embodiments, a push rod 2 is fixedly connected to one side wall of the support platform, the other end of the push rod 2 passes through the second liquid storage tank and is fixedly connected to the second piston, and the second piston is slidably matched with the inner wall of the second liquid storage tank.

[0014] In some embodiments, a fixing frame is welded to the side wall of the U-shaped frame, a push switch is fixedly installed on the side wall of the fixing frame, and the electromagnet is electrically connected to the push switch.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] The utility model provides a limit rod and a fixed plate. After the material taking component takes down the punched workpiece, it is placed on the top of the fixed plate, and the limit rod is used to limit the workpiece, so that the workpieces are uniformly and neatly stacked, avoiding mutual friction damage between the workpieces caused by irregular stacking, and ensuring the quality of the workpieces.

[0017] By setting a cam, the cam rotates with the shaft and uses its raised portion to complete the stacking assembly's avoidance of the material picking assembly and the opening and closing of the electromagnet, so that only one driving source, a bidirectional motor, is set to achieve multiple operations, thereby improving the compactness of the device structure.

[0018] By setting up liquid storage tank 1, connecting pipe and liquid storage tank 2, the stacking component can be driven to avoid when the material picking component rotates by utilizing the hydraulic principle, and because the cross-section of liquid storage tank 1 is larger than the cross-section of liquid storage tank 2, the movement speed of support platform 1 is increased, thereby achieving a quick avoidance effect.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The main structure of the utility model Figure 1 .

[0022] Figure 2 The main structure of the utility model Figure 2 .

[0023] Figure 3 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the drive assembly of the utility model.

[0025] Reference numerals:

[0026] 1. Loading plate; 2. U-shaped frame; 3. Loading platform 1; 4. Loading platform 2; 5. Rotating arm; 6. Driving assembly; 7. Bidirectional motor; 8. Limit rod; 9. Fixed plate; 10. Electromagnet; 11. Elastic contact; 12. Fixed frame; 13. Push switch; 14. Rotating shaft; 15. Cam; 16. Spring; 17. Liquid storage tank 1; 18. Push rod 1; 19. Piston 1; 20. Connecting pipe; 21. Piston 2; 22. Liquid storage tank 2; 23. Push rod 2. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] In the present utility model, unless otherwise clearly stipulated 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 above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings. Embodiment 1:

[0030] like Figure 1 and Figure 2 As shown, the automatic blanking device of the punch press is arranged below the blanking port of the punch press, and comprises a bearing plate 1 and a U-shaped frame 2 fixed to the top of the bearing plate 1 by bolts.

[0031] The U-shaped frame 2 is rotatably connected to a rotating arm 5 on the inner side, a material picking assembly is provided on the side wall of the rotating arm 5, and a material stacking assembly is provided on the supporting plate 1. The material stacking assembly includes a supporting platform 3 that is slidably matched with the top of the supporting plate 1 and a fixed plate 9 that is fixedly connected to the top of the supporting platform 3, and a plurality of radially arranged limit rods 8 are welded to the top of the fixed plate 9.

[0032] When the device is working, the rotating arm 5 is parallel to the U-shaped frame 2. When it is necessary to pick up materials, the rotating arm 5 rotates to the side away from the supporting platform 3 until it is perpendicular to the U-shaped frame 2. At this time, the picking assembly is located below the blanking port of the punch press. The punched workpiece is removed by the picking assembly, and then the rotating arm 5 is rotated in the opposite direction so that the picking assembly is located above the stacking assembly. Then the picking assembly releases the workpiece and makes it fall to the top of the fixed plate 9. The above steps are repeated continuously to complete the neat stacking of the workpieces.

[0033] The device is provided with a limit rod 8 and a fixed plate 9. After the material removal component removes the stamped workpiece, it is placed on the top of the fixed plate 9, and the limit rod 8 is used to limit the workpiece, so that the workpieces are uniformly and neatly stacked, avoiding friction damage between the workpieces caused by irregular stacking, thereby ensuring the quality of the workpieces.

[0034] like Figure 2 As shown, the material picking assembly includes a supporting platform 2 4 , an electromagnet 10 and an elastic contact 11 . The supporting platform 2 4 is fixed to the top of the rotating arm 5 by bolts, and the electromagnet 10 and the elastic contact 11 are fixedly connected to the top of the supporting platform 2 4 .

[0035] When the supporting platform 2 4 rotates with the rotating arm 5 to below the blanking port of the punch press, the workpiece is separated from the mold through the knocking vibration of the elastic contact 11, and the electromagnet 10 adsorbs the workpiece. When the supporting platform 2 4 rotates with the rotating arm 5 to above the fixed plate 9, the power supply of the electromagnet 10 is turned off, and the workpiece falls onto the fixed plate 9 and is stacked.

[0036] The device can separate the workpiece from the mold by arranging the electromagnet 10 and the elastic contact 11 to knock and vibrate, thereby preventing the workpiece from being adsorbed on the mold and increasing the difficulty of material removal. Embodiment 2:

[0037] Automatic punching device, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 2-4 As shown:

[0038] A driving assembly 6 is provided on one side of the supporting plate 1, and the driving assembly 6 includes a rotating shaft 14, a liquid storage tank 1 17 and a liquid storage tank 2 22. The liquid storage tank 1 17 is filled with hydraulic oil, and the cross-section of the liquid storage tank 1 17 is larger than the cross-section of the liquid storage tank 2 22. The rotating arm 5 is rotatably connected to the inner side of the U-shaped frame 2 through the rotating shaft 14.

[0039] One end of the rotating shaft 14 passes through the U-shaped frame 2 and is fixed with a cam 15 , and the other end of the rotating shaft 14 is fixedly connected to a bidirectional motor 7 via a coupling, and the bidirectional motor 7 is fixed to the side wall of the U-shaped frame 2 via bolts.

[0040] The liquid storage tank 17 is fixedly connected to the side wall of the U-shaped frame 2, and a push rod 18 is slidably fitted on the top of the liquid storage tank 17. The end of the push rod 18 located on the inner side of the liquid storage tank 17 is fixedly connected to a piston 19, and a spring 16 is buckled on the opposite side of the liquid storage tank 17 and the push rod 18.

[0041] The second liquid storage tank 22 is fixed to the top of the supporting plate 1 through a bracket, and the bottom of the first liquid storage tank 17 is fixed and connected with a connecting pipe 20, and the other end of the connecting pipe 20 is fixedly connected and connected to the second liquid storage tank 22.

[0042] The side wall of the bearing platform 1 3 is fixedly connected with a push rod 23 , the other end of which passes through the liquid storage tank 22 and is fixedly connected with a piston 21 , which is slidably matched with the inner wall of the liquid storage tank 22 .

[0043] like Figure 3 As shown, a fixing frame 12 is welded to the side wall of the U-shaped frame 2 , a push switch 13 is fixedly installed on the side wall of the fixing frame 12 , and the electromagnet 10 is electrically connected to the push switch 13 .

[0044] In this embodiment, the bidirectional motor 7 is started to drive the rotating shaft 14 to drive the rotating arm 5 and the cam 15 to rotate. When the material taking assembly removes the workpiece from the punching machine blanking port, the bidirectional motor 7 is started to drive the rotating shaft 14 to drive the rotating arm 5 and the cam 15 to rotate in the opposite direction. When the protrusion of the cam 15 rotates to above the push rod 18, the push rod 18 is pressed downward by the protrusion, the spring 16 is squeezed, and the piston 19 pushes the hydraulic oil in the liquid storage tank 17 into the liquid storage tank 22. The hydraulic oil pushes the piston 21 along the inner wall of the liquid storage tank 22. The push rod 23 pushes the support platform 3 to slide, so that the material picking component can pass smoothly when rotating. When the cam 15 protrudes and rotates to the push switch 13, the spring 16 uses its own elasticity to drive the push rod 18 to reset, so that the hydraulic oil returns to the liquid storage tank 17, and the push rod 23 drives the support platform 3 to reset. At the same time as the cam 15 presses the push switch 13, the material picking component rotates to above the fixed plate 9, and the electromagnet 10 is powered off and loses its magnetic force, so that the workpiece automatically falls above the fixed plate 9.

[0045] The device is provided with a cam 15, which rotates with the shaft 14 and uses its raised portion to complete the stacking assembly's avoidance of the material taking assembly and the opening and closing of the electromagnet 10, so that only one driving source, the bidirectional motor 7, is provided to achieve multiple operations, thereby improving the compactness of the device.

[0046] By providing a liquid storage tank 17, a connecting pipe 20 and a liquid storage tank 22, the device can drive the stacking assembly to avoid the material taking assembly when the material taking assembly rotates by using the hydraulic principle. Moreover, because the cross section of the liquid storage tank 17 is larger than the cross section of the liquid storage tank 22, the movement speed of the support platform 3 is increased, thereby achieving a quick avoidance effect.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An automatic blanking device for a punch press, comprising a load-bearing plate (1) and a U-shaped frame (2) fixed to the top of the load-bearing plate (1) by bolts, characterized in that: The U-shaped frame (2) is rotatably connected to a rotating arm (5) on the inner side, a material taking assembly is provided on the side wall of the rotating arm (5), and a material stacking assembly is provided on the supporting plate (1), the material stacking assembly comprises a supporting platform (3) slidably engaged with the top of the supporting plate (1) and a fixing plate (9) fixedly connected to the top of the supporting platform (3), and a plurality of radially arranged limiting rods (8) are welded to the top of the fixing plate (9).

2. The automatic punching device according to claim 1, characterized in that: The material picking assembly comprises a second carrier platform (4), an electromagnet (10) and an elastic contact (11); the second carrier platform (4) is fixed to the top of the rotating arm (5) by means of bolts; the electromagnet (10) and the elastic contact (11) are fixedly connected to the top of the second carrier platform (4).

3. The automatic punching device according to claim 1, characterized in that: A driving assembly (6) is provided on one side of the bearing plate (1), the driving assembly (6) comprising a rotating shaft (14), a first liquid storage tank (17) and a second liquid storage tank (22), the first liquid storage tank (17) is filled with hydraulic oil, and the cross-section of the first liquid storage tank (17) is larger than the cross-section of the second liquid storage tank (22), and the rotating arm (5) is rotatably connected to the inner side of the U-shaped frame (2) via the rotating shaft (14).

4. The automatic punching device according to claim 3 is characterized in that: One end of the rotating shaft (14) passes through the U-shaped frame (2) and is fixed with a cam (15); the other end of the rotating shaft (14) is fixedly connected to a bidirectional motor (7) via a coupling; the bidirectional motor (7) is fixed to the side wall of the U-shaped frame (2) via bolts.

5. The automatic punching device according to claim 4, characterized in that: The liquid storage tank 1 (17) is fixedly connected to the side wall of the U-shaped frame (2); a push rod 1 (18) is slidably fitted on the top of the liquid storage tank 1 (17); a piston 1 (19) is fixedly connected to the end of the push rod 1 (18) located inside the liquid storage tank 1 (17); and a spring (16) is buckled on the opposite side of the liquid storage tank 1 (17) and the push rod 1 (18).

6. The automatic punching device according to claim 5, characterized in that: The second liquid storage tank (22) is fixed to the top of the supporting plate (1) through a bracket, the bottom of the first liquid storage tank (17) is fixed and connected to a connecting pipe (20), and the other end of the connecting pipe (20) is fixedly connected and connected to the second liquid storage tank (22).

7. The automatic punching device according to claim 6, characterized in that: The side wall of the support platform 1 (3) is fixedly connected with a push rod 2 (23), the other end of the push rod 2 (23) passes through the liquid storage tank 2 (22) and is fixedly connected with a piston 2 (21), and the piston 2 (21) is slidably matched with the inner wall of the liquid storage tank 2 (22).

8. The automatic punching device according to claim 2, characterized in that: A fixing frame (12) is welded to the side wall of the U-shaped frame (2), a push-type switch (13) is fixedly mounted on the side wall of the fixing frame (12), and the electromagnet (10) is electrically connected to the push-type switch (13).

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