Punching die for automobile sheet metal parts

Abstract

The utility model discloses an automobile sheet metal part punching die which comprises a connecting frame, a pressing plate and a lower die, the connecting frame, the pressing plate and the lower die are sequentially arranged from top to bottom, the pressing plate is fixedly connected with the connecting frame, the pressing plate is fixedly connected with a first guide rod penetrating through the connecting frame, and the first guide rod is vertically arranged. The first guide rod is provided with a compression spring, the two ends of the compression spring abut against the connecting frame and the pressing plate respectively, the first guide rod is sleeved with the compression spring, the pressing plate is provided with an inclined section, the inclined section is connected with a male die in a sliding mode, the connecting frame is provided with a containing groove, and the upper end of the male die is fixedly connected with a movable plate located in the containing groove. The movable plate is rotationally connected with a roller pin abutting against the connecting frame, and a through groove is formed in the lower die and matched with the male die. The sheet metal part punching device has the advantages that the function of punching the sheet metal part with a bending structure is achieved, and the advantage of being capable of punching the bent sheet metal part is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of punching die, specifically relates to a kind of automobile sheet metal punching die. BACKGROUND

[0002] Punching die is the pressure provided by press, makes punching die extrusion workpiece, and makes workpiece partial material separation, to realize the machining of hole on workpiece.Punching die has the advantages such as high machining precision, high machining efficiency, the consistency of workpiece processed is good.

[0003] The utility model discloses a kind of sheet metal trimming punching die, including rack, further including upper die holder, male die, lower die holder, female die in turn from top to bottom;Upper die holder and lower die holder are fixed on rack, and upper die holder and lower die holder are connected by guide pillar guide sleeve structure between;Male die is connected on upper die holder, and upper die holder is provided with at least one punch, and punch is set through male die;Female die is set on lower die holder, and female die is matched with male die, and female die is provided with at least one punching hole matched with punch.

[0004] In automobile sheet metal, often need to adapt to the shape structure of automobile, process out the sheet metal with bending angle.The above-mentioned sheet metal trimming punching die can only punch on the flat sheet metal, but cannot punch on the sheet metal with bending angle.Therefore, there is the problem of not being able to punch on the bent sheet metal in the prior art. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model aims at providing a kind of automobile sheet metal punching die, it includes connecting frame, pressure plate and lower die, the automobile sheet metal punching die has the advantages that can punch on the bent sheet metal.

[0006] To achieve the above-mentioned utility model purposes, the technical solutions adopted by the utility model are as follows:

[0007] A kind of automobile sheet metal punching die, including connecting frame, pressure plate and lower die, the connecting frame, pressure plate and lower die are sequentially arranged from top to bottom, the pressure plate is fixedly connected with connecting frame, the pressure plate is fixedly connected with the first guide rod of being arranged in connecting frame, the first guide rod is vertically arranged, the first guide rod is equipped with the compression spring of two ends respectively with connecting frame and pressure plate abut, the compression spring is sleeved on the first guide rod, the pressure plate is equipped with inclined section, the inclined section is slidably connected with male die, the connecting frame is equipped with accommodating groove, the male die upper end is fixedly connected with the movable plate in accommodating groove, the movable plate is rotatably connected with the roller pin of abut with connecting frame, the lower die is equipped with through groove, and the through groove is matched with male die.

[0008] Through the arrangement, the automobile sheet metal punching die can drive the punch to move along the inclined direction on the inclined section and stamp the workpiece, so that the punching function of the sheet metal with the bending structure is realized, and the punching on the bent sheet metal is achieved.

[0009] As preferred, the connecting frame is provided with an inclined surface in the accommodating groove, the inclined surface is parallel to the inclined section, and the roller abuts against the inclined surface.

[0010] Through the arrangement, the movement of the connecting frame pushing the punch to move along the inclined direction is smoother.

[0011] As preferred, the movable plate is provided with an oil groove below the roller.

[0012] Through the arrangement, the friction of the roller rotating on the movable plate is reduced.

[0013] As preferred, a plurality of rollers are arranged along the inclined direction of the inclined surface.

[0014] Through the arrangement, the structural reliability between the connecting frame and the movable plate is improved.

[0015] As preferred, the movable plate is fixedly provided with a limiting plate, the connecting frame is provided with a sliding groove extending along the inclined direction of the inclined surface, and the limiting plate is rotationally connected with a pulley clamped in the sliding groove.

[0016] Through the arrangement, the pulley, the limiting plate and the protrusion move upwardly on the pressing plate.

[0017] As preferred, the first guide rod is provided with a first buffer pad, the first guide rod is provided with a first clamping plate at the upper end, the first clamping plate is provided with a first screw threadedly connected with the first guide rod, and the first buffer pad is clamped with the first clamping plate and the connecting frame at the upper and lower ends.

[0018] Through the arrangement, the impact of the first guide rod is prevented from being too large to fall off the pressing plate.

[0019] As preferred, the connecting frame is provided with a first avoiding groove at each end, and a plurality of first guide rods are arranged, and the first buffer pads on the plurality of first guide rods are arranged in the first avoiding grooves at the two ends of the connecting frame.

[0020] Through the arrangement, the first clamping plate and the first screw are conveniently installed.

[0021] As preferred, the pressing plate is fixedly connected with a second guide rod penetrating through the connecting frame, and the second guide rod is vertically arranged.

[0022] Through the arrangement, the structural reliability between the pressing plate and the connecting frame is improved.

[0023] Preferably, the connecting frame is provided with a second position avoiding groove between the two first position avoiding grooves, the second guide rod is provided with a second buffer pad in the second position avoiding groove, the second guide rod is provided with a clamping groove, the second guide rod is provided with a second clamping plate with the clamping groove, and the upper and lower ends of the second buffer pad are respectively clamped with the second clamping plate and the connecting frame.

[0024] Through the arrangement, the structure is more compact.

[0025] Preferably, two second clamping plates are arranged, the second guide rod is located between the two second clamping plates, a connecting plate is arranged between the two second guide rods, the second position avoiding groove penetrates to both sides of the width direction of the connecting frame, the extension direction of the second clamping plate is the same as the extension direction of the second position avoiding groove, the connecting plate is located at the end of the second position avoiding groove, the connecting plate is provided with a plurality of second screws, and the plurality of second screws are respectively screwed with the two second guide rods.

[0026] Through the arrangement, the second clamping plate is convenient to disassemble and install.

[0027] Compared with the prior art, the utility model has obtained beneficial technical effects:

[0028] 1. The automobile sheet metal part punching die can drive the punch to move along the inclined direction on the inclined section and perform stamping processing on the workpiece, thereby realizing the punching processing function of the sheet metal part with the bending structure, and achieving the punching on the bent sheet metal part.

[0029] 2. In the punching processing process, the workpiece is pressed on the lower die by the pressing plate, so that the workpiece remains stable during the processing process, the accidental sliding of the workpiece is prevented, and the reliability and the processing precision are improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structure schematic view of the automobile sheet metal part punching die in the embodiment of the utility model;

[0031] Figure 2 is a sectional view of the automobile sheet metal part punching die in the embodiment of the utility model;

[0032] Figure 3 is an enlarged view of A in the utility model Figure 2 embodiment;

[0033] Figure 4 is a disassembled schematic view of the automobile sheet metal part punching die in the utility model.

[0034] The technical features referred to by the reference numerals are as follows:

[0035] 11, connecting frame; 12, accommodating groove; 13, inclined surface; 14, first position-avoiding groove; 15, second position-avoiding groove; 21, pressing plate; 22, inclined section; 23, male die; 24, movable plate; 25, roller pin; 26, oil groove; 27, limiting plate; 28, sliding groove; 29, pulley; 31, first guide rod; 32, compression spring; 33, first buffer pad; 34, first clamping plate; 35, first screw; 41, second guide rod; 42, second buffer pad; 43, clamping groove; 44, second clamping plate; 45, connecting plate; 46, second screw; 51, lower die; 52, through groove. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below with examples, but the scope of the utility model claimed is not limited to the following specific examples.

[0037] Reference Figures 1-4 A punching die for automobile sheet metal parts, comprising a connecting frame 11, a pressing plate 21 and a lower die 51, which are arranged in sequence from top to bottom.

[0038] The pressing plate 21 is fixedly connected with the connecting frame 11, and the pressing plate 21 is fixedly connected with a first guide rod 31 penetrating through the connecting frame 11, wherein the first guide rod 31 is vertically arranged, and the first guide rod 31 is provided with a compression spring 32 abutting against the connecting frame 11 and the pressing plate 21 at two ends thereof, and the compression spring 32 is sleeved on the first guide rod 31. The first guide rod 31 is sleeved with a first buffer pad 33, the upper end of the first guide rod 31 is provided with a first clamping plate 34, the first clamping plate 34 is penetrated through a first screw 35 threadedly connected with the first guide rod 31, and the first buffer pad 33 is respectively clamped with the first clamping plate 34 and the connecting frame 11 at two ends thereof. During the upward movement of the connecting frame 11, the first buffer pad 33 can absorb the upward movement of the first clamping plate 34, the first guide rod 31 and the pressing plate 21, and can also absorb the impact, so as to prevent the first guide rod 31 from being separated from the pressing plate 21 due to excessive impact. The connecting frame 11 is respectively provided with a first position-avoiding groove 14 at two ends thereof, and a plurality of first guide rods 31 are arranged, and the first buffer pads 33 on the plurality of first guide rods 31 are respectively arranged in the first position-avoiding grooves 14 at two ends of the connecting frame 11. The first position-avoiding grooves 14 can accommodate the first buffer pad 33, the first clamping plate 34 and the first screw 35, so as to make the structure more compact. The first position-avoiding grooves 14 are arranged at two ends of the connecting frame 11, so that the first screw 35 can be rotated in a larger space, thereby facilitating the installation of the first clamping plate 34 and the first screw 35.

[0039] The pressing plate 21 is fixedly connected with a second guide rod 41 penetrating through the connecting frame 11, and the second guide rod 41 is vertically arranged. The first guide rod 31 and the second guide rod 41 simultaneously guide the vertical movement of the pressing plate 21 on the connecting frame 11, thereby improving the structural reliability between the pressing plate 21 and the connecting frame 11. The connecting frame 11 is provided with a second avoiding slot 15 located between the two first avoiding slots 14, and the second guide rod 41 is sleeved with a second buffer pad 42 located in the second avoiding slot 15. The second guide rod 41 is provided with a clamping groove 43, and the second guide rod 41 is provided with a second clamping plate 44 provided with the clamping groove 43. The upper and lower ends of the second buffer pad 42 are respectively clamped with the second clamping plate 44 and the connecting frame 11. The second avoiding slot 15 serves to accommodate the second buffer pad 42, the second clamping plate 44 and the second screw 46, thereby making the structure more compact. The second clamping plate 44 is provided with two second clamping plates 44, and the second guide rod 41 is located between the two second clamping plates 44. The two second guide rods 41 are provided with a connecting plate 45, and the second avoiding slot 15 penetrates to both sides of the connecting frame 11 in the width direction. The extension direction of the second clamping plate 44 is the same as the extension direction of the second avoiding slot 15. The connecting plate 45 is located at the end of the second avoiding slot 15, and the connecting plate 45 is provided with a plurality of second screws 46. The plurality of second screws 46 are respectively screwed with the two second guide rods 41. When the second buffer pad 42 needs to be replaced due to aging or damage, the second screw 46 is rotated at the opening of the second avoiding slot 15, so that the second screw 46 is separated from the second clamping plate 44, thereby the connecting plate 45 can be detached from the second clamping plate 44. Further, the two second clamping plates 44 can be moved away from the second guide rod 41 and detached, so that the second buffer pad 42 can be replaced from the second guide rod 41. The second screw 46 is rotated at the opening of the second avoiding slot 15, thereby facilitating the disassembly and installation of the second clamping plate 44.

[0040] The pressing plate 21 is provided with an inclined section 22, the inclined section 22 is slidingly connected with a male die 23, the connecting frame 11 is provided with a containing groove 12, the upper end of the male die 23 is fixedly connected with a movable plate 24 located in the containing groove 12, the movable plate 24 is rotationally connected with a roller pin 25 abutting against the connecting frame 11, the lower die 51 is provided with a through groove 52, the through groove 52 is matched with the male die 23. The connecting frame 11 is connected with the hydraulic cylinder of the pressing machine, the connecting frame 11 is driven to move vertically by the hydraulic machine. The connecting frame 11 is provided with an inclined surface 13 located in the containing groove 12, the inclined surface 13 is parallel to the inclined section 22, the roller pin 25 abuts against the inclined surface 13. The parallel between the inclined surface 13 and the inclined section 22 enables the connecting frame 11 to exert a pushing force in the inclined direction on the roller pin 25 through the inclined surface 13, to push the roller pin 25, the movable plate 24 and the male die 23 to move in the inclined direction, so that the connecting frame 11 moves more smoothly when pushing the male die 23 to move in the inclined direction. The movable plate 24 is provided with an oil groove 26 in communication with the surface of the roller pin 25, the oil groove 26 is located directly below the roller pin 25. The oil groove 26 stores lubricating oil, which provides lubrication for the roller pin 25 and reduces the friction force of the roller pin 25 when rotating on the movable plate 24. The oil groove 26 is located directly below the roller pin 25, which is conducive to storing lubricating oil in the oil groove 26, and when the inclined surface 13 provides an inclined pushing force to the roller pin 25, the force direction of the roller pin 25 is offset from the oil groove 26, thereby avoiding structural damage caused by the roller pin 25 pressing the oil groove 26. The roller pin 25 is provided in plurality, and the plurality of roller pins 25 are arranged in the inclined direction of the inclined surface 13. The inclined surface 13 contacts the plurality of roller pins 25, thereby improving the structural reliability between the connecting frame 11 and the movable plate 24. The movable plate 24 is fixedly installed with a limiting plate 27, the connecting frame 11 is provided with a sliding groove 28 extending in the inclined direction of the inclined surface 13, and the limiting plate 27 is rotationally connected with a pulley 29 engaged in the sliding groove 28. When the connecting frame 11 moves upward, the pulley 29, the limiting plate 27 and the protrusion can move upwardly on the pressing plate 21 by the upward pulling force provided by the sliding groove 28 to the pulley 29. The limiting plate 27 is connected with the end of the roller pin 25, thereby providing a limiting action to the roller pin 25 through the limiting plate 27, so that the relative position of the roller pin 25 and the movable plate 24 remains unchanged.

[0041] When processing, the workpiece with the bending angle is placed between the lower die 51 and the pressing plate 21, the connecting frame 11 is driven to move downwards, the pressing plate 21 moves downwards along with the connecting frame 11 to contact the workpiece, the pressing plate 21 and the lower die 51 clamp the workpiece through the elastic force of the spring, and the stability of the workpiece is improved. Then the connecting frame 11 is continuously driven to move downwards, the connecting frame 11 drives the movable plate 24 and the punch 23 to move downwards through the roller pin 25, the punch 23 extrudes and punches the workpiece to form a hole on the workpiece, and the punching processing function is realized. When the punch 23 and the movable plate 24 move downwards along the inclined direction, the roller pin 25 can adaptively roll on the inclined surface 13, so that the punch 23 and the movable plate 24 can be pushed by the connecting frame 11 moving vertically downwards and slide along the inclined direction. The waste produced by the punching processing is discharged through the through slot 52.

[0042] When resetting, the connecting frame 11 is driven to move upwards, the connecting frame 11 drives the limiting plate 27, the movable plate 24 and the punch 23 to move upwards through the sliding groove 28 and the pulley 29, and the punch 23 is inclined to move upwards on the pressing plate 21 through the spring pressing the pressing plate 21. When the limiting plate 27, the movable plate 24 and the punch 23 are inclined to move upwards, the pulley 29 can adaptively slide on the sliding groove 28, so as to prevent the mechanism from being stuck. After the punch 23 is inclined to slide out of the through slot 52, the first buffer pad 33 and the second buffer pad 42 are respectively clamped with the first clamping plate 34 and the second clamping plate 44, so that the connecting frame 11 can drive the pressing plate 21 to move upwards to the initial position through the first buffer pad 33 and the second buffer pad 42, thereby realizing the resetting of the mechanism, and the workpiece processed is taken out from between the pressing plate 21 and the lower die 51.

[0043] The embodiment has the following advantages:

[0044] The automobile sheet metal punching die can drive the punch 23 to move along the inclined direction on the inclined section 22 and punch the workpiece, so as to realize the punching processing function of the sheet metal with the bending structure, and achieve the advantage that the punching can be performed on the bent sheet metal.

[0045] In the punching processing process, the workpiece is pressed tightly on the lower die 51 through the pressing plate 21, so that the workpiece remains stable during the processing process, the accidental sliding of the workpiece is prevented, the reliability is improved, and the processing precision is ensured.

[0046] According to the disclosure and teaching of the above description, the person skilled in the art of the utility model can also change and modify the above embodiment. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the utility model should fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the utility model.

Claims

1. A punch die for a sheet metal part of an automobile, characterized by: The utility model provides a connecting frame (11), pressing plate (21) and lower mould (51) including, connecting frame (11), pressing plate (21) and lower mould (51) are arranged from top to bottom in proper order, pressing plate (21) is fixedly connected with connecting frame (11), the first guide rod (31) of pressing plate (21) fixedly connected with is passed in connecting frame (11), the first guide rod (31) is vertically arranged, the first guide rod (31) is equipped with the compression spring (32) of two ends respectively with connecting frame (11) and pressing plate (21) abutment, the compression spring (32) is sleeved on the first guide rod (31), the pressing plate (21) is equipped with inclined section (22), the inclined section (22) is slidably connected with the punch (23), the connecting frame (11) is equipped with accommodating groove (12), the punch (23) upper end fixedly connected with the movable plate (24) in accommodating groove (12), the movable plate (24) is rotatably connected with the roller pin (25) with connecting frame (11) abutment, the lower mould (51) is equipped with through groove (52), and the through groove (52) is matched with punch (23).

2. The automotive panel piercing die of claim 1, wherein: The connecting frame (11) is equipped with the inclined plane (13) in accommodating groove (12), the inclined plane (13) is parallel with inclined section (22), and the roller pin (25) is abutted with the inclined plane (13).

3. The automotive panel piercing die of claim 2, wherein: The movable plate (24) is equipped with oil groove (26), and the oil groove (26) is directly below the roller pin (25).

4. The automotive panel piercing die of claim 2, wherein: The roller pin (25) is arranged in multiple, and the multiple roller pins (25) are arranged along the inclined direction of the inclined plane (13).

5. The automotive panel piercing die of claim 2, wherein: The movable plate (24) is fixedly installed with the limit plate (27), the connecting frame (11) is equipped with the sliding slot (28), the sliding slot (28) extends along the inclined direction of the inclined plane (13), and the limit plate (27) is rotatably connected with the pulley (29) clamped into the sliding slot (28).

6. The automotive panel piercing die of claim 1, wherein: The first guide rod (31) is sleeved with the first buffer pad (33), the first guide rod (31) upper end is equipped with the first clamping plate (34), the first clamping plate (34) is passed with the first screw (35) of screw connection with the first guide rod (31), and the first buffer pad (33) upper and lower ends are clamped with the first clamping plate (34) and connecting frame (11) respectively.

7. The automotive panel piercing die of claim 1, wherein: The connecting frame (11) both ends are equipped with the first position-avoiding groove (14), the first guide rod (31) is arranged in multiple, and the first buffer pad (33) on the multiple first guide rods (31) is arranged in the first position-avoiding groove (14) of the both ends of connecting frame (11) respectively.

8. The automotive panel piercing die of claim 7, wherein: The pressing plate (21) is fixedly connected with the second guide rod (41) passed in connecting frame (11), and the second guide rod (41) is vertically arranged.

9. The automotive panel piercing die of claim 8, wherein: The connecting frame (11) is provided with a second position avoiding groove (15), the second position avoiding groove (15) is located between the two first position avoiding grooves (14), the second guide rod (41) is sleeved with a second buffer pad (42) located in the second position avoiding groove (15), the second guide rod (41) is provided with a clamping groove (43), the second guide rod (41) is provided with a second clamping plate (44) provided with the clamping groove (43), and the upper and lower ends of the second buffer pad (42) are respectively clamped with the second clamping plate (44) and the connecting frame (11).

10. The automotive panel piercing die of claim 9, wherein: The second clamping plate (44) is provided with two, the second guide rod (41) is located between the two second clamping plates (44), the two second guide rods (41) are provided with a connecting plate (45), the second position avoiding groove (15) penetrates to both sides of the width direction of the connecting frame (11), the extension direction of the second clamping plate (44) is the same as the extension direction of the second position avoiding groove (15), the connecting plate (45) is located at the end of the second position avoiding groove (15), the connecting plate (45) is provided with a plurality of second screws (46), and the plurality of second screws (46) are respectively screwed with the two second guide rods (41).

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