CN206425391U - Bar material punching and shearing die - Google Patents

Abstract

The utility model relates to the field of mechanical punching and shearing, in particular to a rod material punching and shearing die, comprising a base, a material guiding mechanism and a material cutting mechanism, the material guiding mechanism includes a material guiding sleeve installed on the base, and the material guiding sleeve There is a material guide hole for the rod material to pass through, and the entrance of the material guide hole is flared; the material breaking mechanism includes a dynamic material breaking mechanism and a static material breaking mechanism. The feeding mechanism includes an upper punching block and an upper pressing unit. The upper pressing unit includes an upper pressing block. The static cutting mechanism includes a lower punching block and a lower pressing unit. The lower punching block is rotatably connected to the base. The scissors are circular, the edge of the punching and shearing block is provided with punching and shearing grooves in the circumferential direction, the center of the punching and shearing blocks is fixedly connected with a rotating shaft, the rotating shaft is coaxially connected with a driven gear, and the driven gear is meshed with a rack. A cylinder is connected, and a stamping groove is provided on the lower pressing block. Through the implementation of the above scheme, the online switching of the cutting tool and the smooth cross-section of the bar material in the prior art are realized, and deformation problems at the cutting part of the bar material are avoided.

Description

Bar punching and shearing die

technical field

The utility model relates to the field of mechanical punching and shearing.

Background technique

The knives on the existing punching and shearing punching machine are divided into static knives and moving knives, and the static knives and the moving knives are used together. Before work, the punching, shearing and punching machine can move back and forth along the conveying direction of the production line under the drive of the servo system to adjust the position. When working, the profile passes continuously between the moving knife and the static knife. When the punching machine drives the moving knife down, the cooperation of the moving knife and the static knife will punch and shear the profile.

In the current punching and shearing press, the static knife is installed and fixed on the static knife seat with the static knife fixing plate, the static knife seat is fixed on the frame, and the moving knife is installed on the moving knife seat with the moving knife fixing plate , The movable knife seat is connected to the hydraulic cylinder. When the static knife is worn and needs to be replaced, the equipment must be shut down to stop production, and then the connecting bolts connecting the static knife seat and the frame should be removed, and then the static knife fixing plate and the static knife seat, the static knife fixing plate and the The connecting bolts of the static knife, and then install a new static knife through the connecting bolts, and finally adjust the gap between the moving knife and the static knife. This manual tool change method takes a long time, about 1.5 hours to 2 hours, which greatly reduces the production efficiency of the entire production line. In addition, there is an elbow phenomenon at the cutting part of the punched rod material, and the cutting section is not smooth.

Utility model content

The utility model intends to provide a rod material punching and shearing die, so as to realize the online switching of the cutting tool and the leveling of the rod material section in the prior art, and to avoid deformation problems at the cutting part of the rod material.

In order to achieve the above object, the basic scheme of the utility model is as follows: the punching and shearing mold for rod material includes a base, a material guide mechanism and a material breaking mechanism, and the material guide mechanism includes a material guide sleeve installed on the base, and the There is a material guide hole in the material guide sleeve for the rod material to pass through, and the entrance of the material guide hole is flared;

The material cutting mechanism includes a dynamic material cutting mechanism and a static material cutting mechanism, the dynamic material cutting mechanism is installed on a punching machine, and the dynamic material cutting mechanism includes an upper punching block and an upper pressing unit, and the upper pressing unit includes An upper pressing block, a first compression spring is connected between the upper pressing block and the punching machine, the lower surface of the upper pressing block is lower than the lower surface of the upper punching and shearing block, and the static cutting mechanism includes a lower punch The shear block and the lower pressing unit, the lower punch block is rotatably connected to the base, the lower punch block is circular, the edge of the lower punch block is provided with punching grooves in the upper direction, and the lower punch A rotating shaft is fixedly connected to the center of the scissors, and a driven gear is coaxially connected to the rotating shaft. A rack is meshed with the driven gear, and a cylinder is connected to the end of the rack. A second compression spring is connected, and a punching groove is provided on the lower pressing block. When the second compression spring is in a normal state, the punching groove, the punching shear groove and the material guide hole are located on the same straight line, and the lower punching shear The block is located directly below the upper pressing block, and the lower pressing block is located directly below the upper punching and shearing block.

The principle of this scheme is: the rod material enters the punching groove located at the uppermost end of the punching block and the punching groove of the lower pressing block from the material guide hole. The block first touches the bar material and compresses the bar material with the lower punching and shearing block. At this time, the upper punching and shearing block quickly impacts the bar material downwards to break the bar material. When the punching and shearing groove is damaged, when the dynamic cutting mechanism moves upward, start the cylinder to pull the rack, so that the rack drives the punching and shearing block to rotate a punching and shearing groove through the driven gear meshed with it, so that the rod material Enter into the new punching and shearing slot for punching and shearing work.

The advantages of this scheme are: 1. By adding the upper pressing block and the lower pressing block to cooperate with the lower punching shear block and the upper punching shear block respectively, on the one hand, the rod material is pre-cut in the process of punching and shearing the rod material. Compress the two sides of the fractured part to prevent deformation of the bar material under the action of a large impact force; The supporting function makes the bar material in a horizontal state to reduce the deformation of the bar material fracture, thereby ensuring the flatness of the cut surface. 2. By designing the lower punching and shearing block into a circular structure and setting the punching and shearing groove in the circumferential direction of the lower punching and shearing block, and with the cooperation of the driven gear and the rack, when the punching and shearing groove is damaged during work, It can achieve the effect of online replacement of punching and shearing slots to improve production efficiency.

Optimum solution 1: As an improvement of the basic solution, since the second compression spring is connected to the lower compression block, when working, the lower compression block reciprocates under the elastic action of the second compression spring, in order to prevent the lower compression block from moving upward When moving to the highest position, the lower pressing block is higher than the upper surface of the lower punching and shearing block, so that the bar material cannot be smoothly moved to the upper surface of the lower pressing block. Therefore, this solution also includes a limit mechanism, which It includes a support bar installed on the lower pressing block. A travel bar hole is vertically opened on the support bar. A limit pin slidingly connected in the travel bar hole is provided on the base. When the limit pin is located at the lower end of the travel bar hole At the same time, the stamping groove and the punching shear groove are located on the same straight line, and the cooperation of the limit pin and the stroke bar hole ensures that when the lower pressing block moves upward to the highest point, the punching groove and the punching shear groove are located on the same straight line.

Preferred solution 2: As an improvement of preferred solution 1, the gap between the side wall of the upper punching block and the side wall of the lower punching block is less than 0.1mm, which has achieved the effect that the cross section of the bar material is smoother.

Preferred option 3: As an improvement on the basic option or preferred option 2, the punching slots on the punching and shearing block are connected end to end, and the punching slots are arc-shaped. Through the above settings, when a punching slot is damaged, the rotating The punching block, the bar material quickly enters the next punching groove along the arc surface of the punching groove.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the rod material punching and shearing die of the present invention.

Fig. 2 is a schematic structural view of the static cutting mechanism in the utility model.

detailed description

The utility model is described in further detail below by means of specific embodiments:

The reference signs in the drawings of the description include: base 1, material guide sleeve 2, upper punching block 3, upper pressing block 4, lower punching block 5, lower pressing block 6, punching groove 7, punching Groove 8, support bar 9, limit pin 10, driven gear 11, rack 12, cylinder 13, bar material 14.

The embodiment is basically shown in Figure 1: the rod material punching and shearing die includes a base 1, a material guide mechanism, a material breaking mechanism and a limit mechanism. The material guide mechanism includes a material guide sleeve 2 installed on the base 1, The material guide sleeve 2 is provided with a material guide hole for the rod material 14 to pass through. The right end entrance of the material guide hole is in the shape of a flare that gradually increases to the right. The material guide sleeve 2 guides the rod material 14 .

The cutting mechanism includes a dynamic cutting mechanism and a static cutting mechanism, the dynamic cutting mechanism is installed on the punching machine, and the dynamic cutting mechanism includes an upper punching and shearing block 3 and an upper pressing unit, and the upper pressing unit includes an upper pressing block 4 , the first compression spring is connected between the upper compression block 4 and the punch press, when the first compression spring is in a natural state, the lower surface of the upper compression block 4 is lower than the lower surface of the upper punching and shearing block 3, when working, After the upper pressing block 4 first compresses the bar material 14, the upper punching and shearing block 3 punches and shears the bar material 14 again to ensure the smoothness of the fractured part of the material.

As shown in Figure 2, the static cutting mechanism includes a lower punching block 5 and a lower pressing unit, the lower punching block 5 is rotatably connected to the base 1, the lower punching block 5 is circular, and the lower punching block 5 The edge is provided with punching and shearing grooves 7 in the circumferential direction, and the punching and shearing grooves 7 on the lower punching and shearing block 5 are connected end to end, and the punching and shearing grooves 7 are arc-shaped. When a punching and shearing groove 7 is damaged, turn the lower punching and shearing block 5, The rod material 14 quickly enters the next punching groove 7 along the arc surface of the punching groove 7 . The center of the lower punching and shearing block 5 is fixedly connected with a rotating shaft, the rotating shaft is coaxially connected with a driven gear 11, the driven gear 11 is meshed with a rack 12, the end of the rack 12 is connected with a cylinder 13, and the lower pressing block 6 is connected to the base. A second compression spring is connected between the seats 1, and the lower compression block 6 is provided with a punching groove 8. When the second compression spring is in a normal state, the punching groove 8, the material guide hole and the punching groove located at the uppermost end of the lower punching and shearing block The centerlines of 7 are all on the same straight line, the lower punching block 5 is located directly below the upper pressing block 4, and the lower pressing block 6 is located directly below the upper punching block 3. In addition, when the upper punching block 3 moves to the lowermost end, the gap between the right side wall of the upper punching block 3 and the left side wall of the lower punching block 5 is 0.05 mm.

The limit mechanism includes a support bar 9 vertically installed on the lower pressing block 6, a travel bar hole is vertically provided on the support bar 9, and a stop pin 10 slidingly connected in the travel bar hole is fixedly installed on the base 1. When the limit pin 10 is located at the lower end of the stroke bar hole, the punching groove 8 and the punching groove 7 on the lower pressing block 6 are located on the same straight line, and the cooperation between the limit pin 10 and the stroke bar hole ensures that the lower pressing block 6 When moving upwards to the highest point, the stamping groove 8 and the punching shear groove 7 are located on the same straight line.

Operating principle: the rod material 14 enters the punching groove 7 located at the uppermost end of the lower punching block 5 and the punching groove 8 of the lower pressing block 6 from the material guide hole. At this time, the punch drives the dynamic cutting mechanism to move downward, The upper pressing block 4 first contacts the rod material 14 and compresses the rod material 14 with the lower punching and shearing block 5. At this moment, the upper punching and shearing block 3 impacts the rod material 14 downwards rapidly, and the rod material 14 is broken. When the punching and shearing groove 7 is damaged, when the dynamic cutting mechanism moves upward, the starting cylinder 13 pulls the rack 12, so that the rack 12 drives the punching and shearing block 5 to rotate one punch through the driven gear 11 meshing with it. Cutting groove 7, can realize the effect of online replacement punching and shearing groove 7 like this.

What is described above is only the embodiment of the present utility model, and common knowledge such as the specific structure and/or characteristic known in the solution is not described too much here. It should be pointed out that for those skilled in the art, under the premise of not departing from the concept of the utility model, some deformations and improvements can also be made, and these should also be regarded as the protection scope of the utility model, and these will not affect the utility model. Effects of novel implementations and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (4)

1. The bar material punching and shearing die is characterized in that it includes a base, a material guiding mechanism and a material cutting mechanism, and the material guiding mechanism includes a material guiding sleeve installed on the base, and the material guiding sleeve is provided with A material guide hole for the rod material to pass through, and the entrance of the material guide hole is flared; The material cutting mechanism includes a dynamic material cutting mechanism and a static material cutting mechanism, the dynamic material cutting mechanism is installed on a punching machine, and the dynamic material cutting mechanism includes an upper punching block and an upper pressing unit, and the upper pressing unit includes An upper pressing block, a first compression spring is connected between the upper pressing block and the punching machine, the lower surface of the upper pressing block is lower than the lower surface of the upper punching and shearing block, and the static cutting mechanism includes a lower punch The shear block and the lower pressing unit, the lower punch block is rotatably connected to the base, the lower punch block is circular, the edge of the lower punch block is provided with punching grooves in the upper direction, and the lower punch A rotating shaft is fixedly connected to the center of the scissors, and a driven gear is coaxially connected to the rotating shaft. A rack is meshed with the driven gear, and a cylinder is connected to the end of the rack. A second compression spring is connected, and a punching groove is provided on the lower pressing block. When the second compression spring is in a normal state, the punching groove, the punching shear groove and the material guide hole are located on the same straight line, and the lower punching shear The block is located directly below the upper pressing block, and the lower pressing block is located directly below the upper punching and shearing block. 2. The bar material punching and shearing die according to claim 1, characterized in that: it also includes a limit mechanism, the limit mechanism includes a support bar installed on the lower pressing block, and a travel bar is vertically provided on the support bar The base is provided with a limit pin that is slidably connected in the travel bar hole. When the limit pin is located at the lower end of the travel bar hole, the stamping groove and the punching shear groove are located on the same straight line. 3 . The rod material punching die according to claim 2 , wherein the gap between the side wall of the upper punching block and the side wall of the lower punching block is less than 0.1 mm. 4. The punching and shearing die for rod material according to claim 1 or 3, characterized in that: the punching and shearing grooves on the lower punching and shearing block are connected end to end, and the punching and shearing grooves are arc-shaped.