Lower pressing material flanging device in cold stamping die

Abstract

The utility model provides a lower pressing material flanging device in a cold stamping die, which relates to the technical field of cold stamping dies, and comprises a lower die holder and an upper die holder, the upper surface of the lower die holder is fixedly connected with a female die, the upper surface of the female die is provided with a stripper plate, the bottom surface of the upper die holder is fixedly connected with a male die, and the lower surface of the male die is provided with a stripper plate. A die handle is fixedly connected to the upper surface of the upper die base, two guide rods are arranged between the lower die base and the upper die base, a pressing material is placed on the upper surface of the female die, and a polishing mechanism used for polishing a pre-hole of the pressing material is arranged on the upper surface of the lower die base. According to the lower pressing material flanging device in the cold stamping die, through the arranged grinding mechanism, the grinding head can rotate and rotate along the inner wall of a pre-hole of a pressing material, and can move up and down along the inner wall of the pre-hole, so that burrs existing in the pre-hole can be thoroughly removed, the pressing material is prevented from cracking in the flanging process, and the quality of the product is improved. And the flanging quality of the pressed material is further improved.

Description

Technical Field

[0001] The utility model relates to a flanging device, in particular to a flanging device for a lower pressing material in a cold stamping die, and belongs to the technical field of cold stamping dies. Background Art

[0002] Cold stamping dies are special tools installed on the press to apply deformation force to the sheet metal placed inside at room temperature to deform it, so as to obtain product parts with certain shapes, sizes and performances; the flanging process is the last processing process for forming the contour shape or three-dimensional shape of the stamped parts. It usually refers to the stamping method of turning the vertical edge along a certain curve on the rough material of the pre-processed hole or part of the hole type by relying on the tensile deformation of the material. The flanging coefficient of the flanging process is not only related to the type and performance of the material, but also to the processing properties and state of the pre-hole (drilling or punching, with or without burrs), the relative thickness of the blank, and the shape of the flanging punch. In order to prevent the edge of the pre-hole from cracking, the flanging coefficient of the pre-hole cannot be too small and should be greater than the limit flanging coefficient; the lower pressure plate structure is mainly used for upward flanging of parts. The pressure plate and the concave die are arranged in the lower die, and the punch is arranged in the upper die. During shaping, the bottom surface of the pressure plate should be in contact with the lower die seat.

[0003] Before using the lower blank flanging device in the existing cold stamping die, it is necessary to first punch a pre-hole on the blank and then flanging the pre-hole. However, most pre-holes have large burrs inside. If the burrs are not removed in advance, the limit flanging coefficient will easily increase, causing the blank to crack during the flanging process, thereby affecting the flanging quality of the blank. Utility Model Content

[0004] The utility model provides a flanging device for a lower pressing material in a cold stamping die, so as to solve the problem in the prior art that burrs inside a pre-hole need to be removed before flanging. If the burrs are not removed, the pressing material is likely to crack during the flanging process, thus affecting the flanging quality of the pressing material.

[0005] The utility model is implemented through the following technical scheme: a device for flanging a lower pressing material in a cold stamping die, comprising a lower die base and an upper die base, the upper surface of the lower die base is fixedly connected with a die, the upper surface of the die is provided with a discharge plate, the bottom surface of the upper die base is fixedly connected with a punch, the upper surface of the upper die base is fixedly connected with a die handle, two guide rods are provided between the lower die base and the upper die base, a pressing material is placed on the upper surface of the die, and a grinding mechanism for grinding the pre-hole of the pressing material is provided on the upper surface of the lower die base; the die handle is fixedly installed with a slider of an external press, a locking mechanism is provided on the slider, and the press can transmit the power of movement to the upper die base through the die handle. The press is a prior art and will not be described in detail herein.

[0006] The grinding mechanism comprises a motor and a cylinder, the output end of the motor is fixedly connected with a fixed rod, the end of the fixed rod away from the motor is rotatably connected with a rotating rod, the top of the rotating rod is fixedly connected with a gear, the telescopic end of the cylinder is fixedly connected with a support plate, the bottom surface of the support plate is fixedly connected with a hollow gear through a fixed ring, the hollow gear is meshed with the gear, the bottom end of the rotating rod is clamped with a grinding head, and the outer surface of the pressing material is provided with a clamping member for clamping the pressing material; the setting of the grinding head clamping can facilitate the replacement of the grinding head; the set grinding mechanism can not only make the grinding head rotate and rotate along the inner wall of the pre-hole of the pressing material, but also make the grinding head move up and down along the inner wall of the pre-hole, so that the burrs in the pre-hole can be completely removed, the limit flanging coefficient of the pre-hole can be reduced, and the pressing material can be prevented from cracking during the flanging process, thereby improving the flanging quality of the pressing material;

[0007] The clamping member includes a second motor and a fixing frame, the output end of the second motor is fixedly connected to a second fixing rod, the outer surface of the second fixing rod is provided with two threads in opposite directions, and the outer surface of the second fixing rod is threadedly connected to two symmetrical clamping plates. The arrangement of the clamping member can fix the pressing material when the pre-hole of the pressing material is polished, which can not only play a role of stabilization and assistance, but also improve the polishing accuracy of the pre-hole.

[0008] The output end of the motor 1 passes through the interior of the support plate and extends to the bottom of the hollow gear, and the outer surface of the motor 1 is fixedly connected to the upper surface of the support plate.

[0009] The upper surface of the lower die base is rotatably connected with a support rod, a slide groove is provided inside the support rod, and the end of the support plate away from the motor is slidably connected to the slide groove through a protrusion. The setting of the slide groove can limit the support plate to prevent the support plate from shaking when sliding up and down.

[0010] Preferably, the outer surface of the cylinder is fixedly connected to the top end of the support rod.

[0011] The outer surface of the second fixing rod is rotatably connected to the fixing frame, the outer surface of the fixing frame is fixedly connected to an auxiliary rod, and the outer surface of the auxiliary rod is slidably connected to the two clamping plates. The setting of the auxiliary rod can limit the clamping plates to prevent the two clamping plates from shaking during the sliding process.

[0012] Preferably, the outer surface of the second motor is fixedly connected to the outer surface of the fixing frame, and the side of the fixing frame away from the clamping plate is fixedly connected to the outer surface of the support rod.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The lower pressing material flanging device in the cold stamping die can not only rotate and self-rotate along the inner wall of the pre-hole of the pressing material through the grinding mechanism, but also move the grinding head up and down along the inner wall of the pre-hole, so as to completely remove the burrs in the pre-hole, reduce the limit flanging coefficient of the pre-hole, avoid cracking of the pressing material during the flanging process, and thus improve the flanging quality of the pressing material.

[0015] 2. The lower pressing material flanging device in the cold stamping die fixes the pressing material when the pre-hole of the pressing material is being polished by setting the clamping part in the polishing mechanism, which not only plays a stabilizing and auxiliary role, but also improves the polishing accuracy of the pre-hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the front view of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the grinding mechanism of the utility model;

[0018] Figure 3 It is an exploded view of the grinding mechanism of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the clamping member of the utility model.

[0020] Description of Reference Numerals

[0021] 1. Lower die base; 2. Concave die; 3. Unloading plate; 4. Upper die base; 5. Punch; 6. Die handle; 7. Guide rod; 8. Pressing material;

[0022] 9. Grinding mechanism; 901. Motor 1; 902. Cylinder; 903. Fixed rod 1; 904. Rotating rod; 905. Gear; 906. Support plate; 907. Hollow gear; 908. Grinding head;

[0023] 909, clamping member; 9091, motor 2; 9092, fixing frame; 9093, fixing rod 2; 9094, clamping plate; 9095, auxiliary rod;

[0024] 910, support rod; 911, slide groove. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A device for flanging a lower pressing material in a cold stamping die comprises a lower die base 1 and an upper die base 4, a concave die 2 is fixedly connected to the upper surface of the lower die base 1, a stripper plate 3 is arranged on the upper surface of the concave die 2, a punch 5 is fixedly connected to the bottom surface of the upper die base 4, a die handle 6 is fixedly connected to the upper surface of the upper die base 4, two guide rods 7 are arranged between the lower die base 1 and the upper die base 4, a pressing material 8 is placed on the upper surface of the concave die 2, and a grinding mechanism 9 for grinding the pre-hole of the pressing material 8 is arranged on the upper surface of the lower die base 1;

[0028] Please refer to Figure 2 and Figure 3 , the grinding mechanism 9 includes a motor 901 and a cylinder 902, the output end of the motor 901 is fixedly connected to a fixed rod 903, the end of the fixed rod 903 away from the motor 901 is rotatably connected to a rotating rod 904, the top of the rotating rod 904 is fixedly connected to a gear 905, the telescopic end of the cylinder 902 is fixedly connected to a support plate 906, the bottom surface of the support plate 906 is fixedly connected to a hollow gear 907 through a fixing ring, the hollow gear 907 is meshed with the gear 905, the bottom end of the rotating rod 904 is clamped with a grinding head 908, and the outer surface of the pressing material 8 is provided with a clamping piece 909 for clamping the pressing material 8; starting the motor 901 in the grinding mechanism 9 can make the fixed rod 903 drive the rotating rod 904 to rotate, thereby driving the grinding head 908 to move along the pressing material The inner wall of the pre-hole 8 rotates, and since the gear 905 on the rotating rod 904 is meshed with the hollow gear 907, the gear 905 can drive the rotating rod 904 to rotate, so that the grinding head 908 can rotate along the inner wall of the pre-hole and also rotate at the same time, and cooperate with the starting cylinder 902 to make the support plate 906 slide up and down along the slide groove 911, so that the motor 901 and the hollow gear 907 can slide up and down, and the fixed rod 903, the rotating rod 904 and the gear 905 can slide up and down, and then the grinding head 908 can rotate and rotate along the inner wall of the pre-hole and also move up and down, and the burrs in the pre-hole can be completely removed, thereby reducing the limit flanging coefficient of the pre-hole, avoiding cracking of the pressing material 8 during the flanging process, and thus improving the flanging quality of the pressing material 8.

[0029] The output end of the motor 1 901 passes through the interior of the support plate 906 and extends to the bottom of the hollow gear 907 . The outer surface of the motor 1 901 is fixedly connected to the upper surface of the support plate 906 .

[0030] The upper surface of the lower die base 1 is rotatably connected with a support rod 910, a slide groove 911 is provided inside the support rod 910, and one end of the support plate 906 away from the motor 1 901 is slidably connected to the slide groove 911 through a protrusion.

[0031] The outer surface of the cylinder 902 is fixedly connected to the top end of the support rod 910 .

[0032] Example 2

[0033] Please refer to Figure 2 and Figure 4 Based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes:

[0034] The clamping member 909 includes a second motor 9091 and a fixing frame 9092. The output end of the second motor 9091 is fixedly connected to a second fixing rod 9093. The outer surface of the second fixing rod 9093 is provided with two threads in opposite directions. The outer surface of the second fixing rod 9093 is threadedly connected to two symmetrical clamping plates 9094. The second motor 9091 in the clamping member 909 is started to rotate the second fixing rod 9093, which can drive the two clamping plates 9094 to move closer to or away from each other, thereby clamping and fixing the pressing material 8, which not only plays a stabilizing and auxiliary role in grinding the pre-hole of the pressing material 8, but also can improve the grinding accuracy of the pre-hole.

[0035] The outer surface of the second fixing rod 9093 is rotatably connected to the fixing frame 9092 , the outer surface of the fixing frame 9092 is fixedly connected to an auxiliary rod 9095 , and the outer surface of the auxiliary rod 9095 is slidably connected to the two clamping plates 9094 .

[0036] The outer surface of the second motor 9091 is fixedly connected to the outer surface of the fixing frame 9092 , and the side of the fixing frame 9092 away from the clamping plate 9094 is fixedly connected to the outer surface of the support rod 910 .

[0037] When the utility model is in use:

[0038] First, the die handle 6 is fixedly installed with the external press, and the support rod 910 in the grinding mechanism 9 is rotated so that the grinding head 908 is above the die 2, and then the pressing material 8 is placed on the die 2, and the motor 2 9091 in the clamping member 909 is started to rotate the fixing rod 2 9093, which can drive the two clamping plates 9094 to move closer to or away from each other, thereby achieving the clamping and fixing of the pressing material 8;

[0039] Then, the motor 901 in the grinding mechanism 9 is started, so that the fixed rod 903 can drive the rotating rod 904 to rotate, thereby driving the grinding head 908 to rotate along the inner wall of the pre-hole of the press material 8. Since the gear 905 on the rotating rod 904 is meshed with the hollow gear 907, the gear 905 can drive the rotating rod 904 to rotate, so that the grinding head 908 can rotate along the inner wall of the pre-hole and also rotate on its own. In conjunction with the starting cylinder 902, the support plate 906 can slide up and down along the slide groove 911, so that the motor 901 and the hollow gear 907 can slide up and down, and the fixed rod 903, the rotating rod 904 and the gear 905 can slide up and down, so that the grinding head 908 can rotate and rotate along the inner wall of the pre-hole and also move up and down, so that the burrs in the pre-hole can be completely removed, thereby reducing the limit flanging coefficient of the pre-hole, avoiding the press material 8 from cracking during the flanging process, and thus improving the flanging quality of the press material 8;

[0040] After grinding, the clamping piece 909 is started to release the clamping plate 9094 and the pressing material 8, and then the support rod 910 is rotated to move the grinding head 908 to the outside of the die 2, and then the press is started to make the upper die seat 4 drive the punch 5 to move downward along the guide rod 7 to the die 2, thereby realizing the flanging of the pressing material 8.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for flanging a material in a cold stamping die, comprising a lower die seat (1) and an upper die seat (4), characterized in that: The upper surface of the lower die base (1) is fixedly connected to a die (2), the upper surface of the die (2) is provided with a discharge plate (3), the bottom surface of the upper die base (4) is fixedly connected to a punch (5), the upper surface of the upper die base (4) is fixedly connected to a die handle (6), two guide rods (7) are provided between the lower die base (1) and the upper die base (4), a pressing material (8) is placed on the upper surface of the die (2), and a grinding mechanism (9) for grinding the pre-hole of the pressing material (8) is provided on the upper surface of the lower die base (1); The grinding mechanism (9) comprises a motor (901) and a cylinder (902); the output end of the motor (901) is fixedly connected to a fixed rod (903); the end of the fixed rod (903) away from the motor (901) is rotatably connected to a rotating rod (904); the top of the rotating rod (904) is fixedly connected to a gear (905); the telescopic end of the cylinder (902) is fixedly connected to a support plate (906); the bottom surface of the support plate (906) is fixedly connected to a hollow gear (907) via a fixing ring; the hollow gear (907) is meshed with the gear (905); the bottom end of the rotating rod (904) is clamped with a grinding head (908); and the outer surface of the pressing material (8) is provided with a clamping member (909) for clamping the pressing material (8); The clamping member (909) comprises a second motor (9091) and a fixing frame (9092); the output end of the second motor (9091) is fixedly connected to a second fixing rod (9093); the outer surface of the second fixing rod (9093) is provided with two threads in opposite directions; the outer surface of the second fixing rod (9093) is threadedly connected to two symmetrical clamping plates (9094).

2. The device for flanging the lower pressing material in a cold stamping die according to claim 1, characterized in that: The output end of the motor one (901) passes through the interior of the support plate (906) and extends to the bottom of the hollow gear (907), and the outer surface of the motor one (901) is fixedly connected to the upper surface of the support plate (906).

3. The device for flanging the lower pressing material in a cold stamping die according to claim 1, characterized in that: The upper surface of the lower die base (1) is rotatably connected to a support rod (910), a slide groove (911) is provided inside the support rod (910), and one end of the support plate (906) away from the motor (901) is slidably connected to the slide groove (911) via a protrusion.

4. The device for flanging the lower pressing material in a cold stamping die according to claim 3, characterized in that: The outer surface of the cylinder (902) is fixedly connected to the top end of the support rod (910).

5. The device for flanging the lower pressing material in a cold stamping die according to claim 1, characterized in that: The outer surface of the second fixing rod (9093) is rotatably connected to the fixing frame (9092), the outer surface of the fixing frame (9092) is fixedly connected to an auxiliary rod (9095), and the outer surface of the auxiliary rod (9095) is slidably connected to two clamping plates (9094).

6. The device for flanging the lower pressing material in a cold stamping die according to claim 3, characterized in that: The outer surface of the second motor (9091) is fixedly connected to the outer surface of the fixing frame (9092), and the side of the fixing frame (9092) away from the clamping plate (9094) is fixedly connected to the outer surface of the support rod (910).

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