CN206153440U - Impact bend mould is tied to U type - Google Patents

Abstract

The utility model relates to a U-shaped bolt punching and bending die, which includes an upper die and a lower die. A U-shaped bending punch is arranged on the lower side of the upper die, and the width between the two sides of the bending punch gradually changes from bottom to top. Small, the upper side of the upper die is provided with a base, and the middle part of the base has a groove that matches the lower part of the bending punch. The base is located on both sides of the groove and is provided with reciprocating slide blocks. The slide block is close to the groove. One end is provided with rollers for supporting the two ends of the U-shaped bolt, and the end of the slider away from the groove is provided with a wedge-shaped surface; the upper mold is also provided with a pair of vertical inserts on both sides, and the lower end of the vertical inserts is provided with the corresponding side. The inclined surface matched with the wedge-shaped surface of the slide block can push the slide block to slide in the middle when the vertical board goes down. The utility model U-bolt punching and bending die is novel in structure, reasonable in design, and easy to use. During processing, the two sides of the U-bolt are extruded and deformed to a certain angle in the middle, so that they can just maintain a vertical state after rebounding and ensure product precision.

Description

A U-bolt punching and bending die

technical field

The utility model relates to a U-shaped bolt punching and bending die.

Background technique

In the production of U-shaped bolt products, the bending springback of the product is inevitable. After the processed U-shaped bolt rebounds, the straight rods on both sides of the U-shaped bolt will expand at a certain angle (generally 1~3°), so that The precision of the U-shaped bolt is insufficient, which is not conducive to future assembly and use.

Utility model content

In view of this, the purpose of the utility model is to provide a U-bolt punching and bending die with a novel structure and effectively improving the precision of the U-bolt product.

The utility model adopts the following schemes to realize: a U-shaped bolt punching and bending die, including an upper die and a lower die, the lower side of the upper die is provided with a U-shaped bending punch, and the width between the two sides of the bending punch is determined by The gradual change from bottom to top is small. The upper side of the upper mold is provided with a base, and the middle part of the base has a groove matching the lower part of the bending punch. The base is located on both sides of the groove and is provided with reciprocating sliding blocks. The end of the block near the groove is provided with rollers for supporting the two ends of the U-shaped bolt, and the end of the slider away from the groove is provided with a wedge-shaped surface; the upper mold is also provided with a pair of vertical inserts on both sides, and the lower end of the vertical insert is set There is an inclined surface matched with the wedge-shaped surface of the slide block on the corresponding side to push the slide block to slide in the middle when the vertical board descends.

Further, the slope on both sides of the bending punch is 1-3°, the base is provided with a support block located outside the slider, and the support block is against the outside of the vertical board when the vertical board goes down.

Further, the circumference of the roller is provided with an annular groove, the upper side of the slider is provided with a semicircular groove for placing the straight bolt to be punched, and the outer edge of the bending punch is also provided with a groove to prevent the U-shaped bolt from being bent. There is a limit groove for deviation when running, and a positioning pin that bears against the corresponding end of the straight bolt is arranged in the semicircular groove of one of the sliders.

Further, the bottom surface of the slider is provided with a chute, the base is provided with a stop pin extending into the chute, and the chute is provided with one end against the stop pin and the other end against the side wall of the chute. The compression spring is to push the slide block outward to slide and reset.

Further, the groove is provided with a pressure pad that can move up and down and always bears against the lower part of the U-shaped bolt. The bottom of the groove has a sinking groove for accommodating the pressure pad. The driving rod for the pressure pad to move up and down; the middle part of the bending punch is pierced with an ejector rod for ejecting the U-bolt downward.

Compared with the prior art, the utility model has the following beneficial effects: the U-bolt punching and bending die of the utility model has a novel structure, reasonable design, and is convenient to use. During processing, both sides of the U-bolt are squeezed and deformed to a certain angle in the middle. , so that it stays in a vertical state after rebounding to ensure product accuracy.

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail through specific embodiments and related drawings below.

Description of drawings

Fig. 1 is a structural sectional view of the utility model embodiment;

Fig. 2 is a top view of the lower mold in the embodiment of the utility model;

Explanation of symbols in the figure: 1-upper die, 2-lower die, 3-bending punch, 4-base, 5-groove, 6-slider, 7-roller, 8-vertical insert, 9-support block, 10-semi-circular groove, 11-limiting groove, 12-locating pin, 13-chute, 14-stop pin, 15-pressure spring, 16-pressure pad, 17-ejector rod, 18-U-shaped bolt.

detailed description

As shown in Figures 1 to 2, a U-shaped bolt punching and bending die includes an upper die 1 and a lower die 2, the lower side of the upper die 1 is provided with a U-shaped bending punch 3, and the two sides of the bending punch 3 The width between them gradually decreases from bottom to top. A base 4 is provided on the upper side of the upper die, and the middle part of the base has a groove 5 that matches the lower part of the bending punch. On both sides of the base 4, there are reciprocating Sliding slider 6, the end of the slider 6 near the groove is provided with rollers 7 for supporting the two ends of the U-shaped bolt, and the end of the slider 6 away from the groove is provided with a wedge-shaped surface; the upper mold is also provided with a pair of The vertical boards 8 on both sides, the lower end of the vertical board 8 is provided with a slope that matches the wedge-shaped surface of the slider on the corresponding side so that when the vertical board 8 goes down, the slider is pushed to slide in the middle. At both ends of the type bolt, the bending punch presses down the middle part of the straight type bolt to form a U-shaped bolt, and at the same time, the vertical insert squeezes the outer end of the slider to push the slider to slide inward so that the rollers squeeze the two ends of the U-shaped bolt toward the middle , so that the straight rods on both sides of the U-shaped bolt are deformed to the middle by 1~2°, and the straight rods on both sides of the processed U-shaped bolt can remain vertical after rebounding, and the straight rods on both sides are parallel to ensure the U-shaped bolt precision.

In this embodiment, the slope on both sides of the bending punch 3 is 1-3°, and the base 4 is provided with a support block 9 located outside the slider. outside of plate 8.

In this embodiment, the circumference of the roller 7 is provided with an annular groove, the upper side of the slider 6 is provided with a semicircular groove 10 for placing a straight bolt to be punched, and the outer edge of the bending punch 3 is also provided with a There is a limit groove 11 to prevent the U-bolt from running off when it bends. The semicircular groove of one of the sliders is provided with a positioning pin 12 against the corresponding end of the straight bolt. The positioning pin is used to limit the left and right positions of the straight bolt.

In this embodiment, the bottom surface of the slider is provided with a chute 13, the base 4 is provided with a stop pin 14 extending into the chute 13, and the chute 13 is provided with an end against the stop pin 14, The other end pushes against the stage clip 15 of the side wall of the chute to push the slide block 6 outwards to slide and reset.

In this embodiment, the groove 5 is provided with a pressure pad 16 that can move up and down and always bears against the lower part of the U-shaped bolt 18. The bottom of the groove has a sinking groove for accommodating the pressure pad. The lower mold There is a driving rod in the middle to drive the pressure pad to move up and down; the middle part of the bending punch is pierced with an ejector rod 17 for ejecting the U-shaped bolt downward. After the processing is completed, the upper mold goes up, and the ejector rod 17 Lower the ejector to remove the material.

The working process of the U-bolt punching and bending die of the utility model: (1) Put the straight bolt whose length has been cut and the screw teeth at both ends to be tapped into the semicircular groove on the slider, and one end of the straight bolt is positioned against it (2) The upper mold moves downward, the bending punch presses down on the middle of the straight bolt, and the roller pushes against the two ends of the straight bolt to force the two ends to bend upward to bend it into a U-shaped bolt; ( 3) When the bending punch approaches the lower limit position, the vertical insert pushes the slider to slide to the middle, so that the rollers push the straight rods on both sides of the U-shaped bolt to bend to the middle to withstand the two sides of the bending punch; (4) Processing Finished, the upper mold goes up, and the slider resets.

The above preferred embodiments have further described the purpose, technical solutions and advantages of the utility model in detail. It should be understood that the above descriptions are only preferred embodiments of the utility model and are not intended to limit the utility model. For new models, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims (5)

1. A U-shaped bolt punching and bending die is characterized in that: it comprises a patrix and a counterdie, the lower side of the patrix is provided with a U-shaped bending punch, and the width between the two sides of the bending punch is from bottom to bottom. The upper gradient is small, the upper side of the upper die is provided with a base, and the middle part of the base has a groove that matches the lower part of the bending punch. The base is located on both sides of the groove and is provided with reciprocating slide blocks. The slide blocks are close to One end of the groove is provided with rollers for supporting the two ends of the U-shaped bolt, and the end of the slider away from the groove is provided with a wedge-shaped surface; the upper mold is also provided with a pair of vertical inserts on both sides, and the lower end of the vertical insert is provided with a The wedge-shaped surface of the slide block on the corresponding side is matched with an inclined surface to push the slide block to slide in the middle when the vertical board descends. 2. The U-bolt punching and bending die according to claim 1, characterized in that: the slope on both sides of the bending punch is 1-3°, and the base is provided with a support block located outside the slider, When the vertical board goes down, the supporting block bears against the outside of the vertical board. 3. The U-bolt punching and bending die according to claim 1, characterized in that: the circumference of the roller is provided with an annular groove, and the upper side of the slider is provided with a semicircular groove for placing the straight-shaped bolt to be punched and bent. The outer edge of the bending punch is also provided with a limit groove to prevent the deviation of the U-shaped bolt during punching and bending, and a positioning pin that bears against the corresponding end of the straight-shaped bolt is arranged in the semicircular groove of one of the sliders. 4. The U-bolt punching and bending die according to claim 3, characterized in that: the bottom surface of the slider is provided with a chute, the base is provided with a stop pin extending into the chute, and the inside of the chute A pressure spring with one end against the stop pin and the other end against the side wall of the chute is provided to push the slide block outward to slide and reset. 5. The U-bolt punching die according to claim 1, characterized in that: the groove is provided with a pressure pad that can move up and down and always bears against the lower part of the U-bolt, and the bottom of the groove has a A sinker for accommodating the pressure pad, a driving rod for driving the pressure pad to move up and down is pierced in the lower die; an ejector rod for ejecting the U-bolt downward is pierced in the middle of the bending punch.