CN108273915A - A kind of adjustable Bending Mould - Google Patents

Abstract

The invention discloses a kind of adjustable Bending Moulds, including upper die holder, lower die holder, sliding block and workpiece squeeze platform there are two being set on lower die holder, sliding block is slidably connected with lower die holder by the cooperation of positioning pin and dowel hole, sliding block side is equipped with groove, and workpiece, which squeezes in platform both ends insertion groove, can form bending cavity；Workpiece squeezes Platform center and is connect with lower die holder by connecting rod and the first spring, and both sides are connect by limited post and second spring with slip recess wall；Upper die holder center is fixedly connected with column, and column lower end is detachably connected bending head.Length, depth and the angle of dogleg section is adjusted in Bending Mould provided by the invention, meets different bending technique requirements, improves production efficiency；Bending head is detachably connected with mold, easy to maintenance, cost-effective；Workpiece, which squeezes, is equipped with spring connection between platform and lower die holder, can reduce punching press stress of the bending head to workpiece, while can self-return after the completion of bending technique.

Description

An adjustable bending die

technical field

The invention relates to an adjustable bending die, which belongs to the technical field of workpiece processing dies.

Background technique

In the bending process, the workpiece is placed on the bending die, and the workpiece is punched by the stamping head to complete the bending process. The bending length and bending angle of the workpiece are mainly determined by the width and depth of the bending cavity formed by the lower mold. The bending molds in the prior art have a fixed size of the bending cavity, so each mold can only adapt to One kind of bending process requirements, but there are various bending process requirements in the actual production process, which makes the manufacturer have to configure a large number of molds, which not only costs a lot, but also frequently replaces the corresponding molds during the production process, which is time-consuming and laborious, affecting production efficiency.

Contents of the invention

Purpose: In order to overcome the deficiencies in the prior art, the present invention provides an adjustable bending die.

Technical solution: In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is:

An adjustable bending die, the upper die set includes an upper die base, a column and a bending head, the lower die set includes a lower die base, a slider and a workpiece extrusion platform, the upper die base and the lower die base There is a guide column and a guide sleeve between them, and the guide column can move up and down along the guide sleeve;

The lower mold base is provided with a number of positioning pin holes, and a number of positioning pins are provided under the slider, and the slider and the lower mold base can be slidably connected through the cooperation of the positioning pin holes and the positioning pins; the workpiece extrusion platform is connected through the connecting rod It is connected with the lower mold base, and there is an elastic part in the middle of the connecting rod, which can be stretched up and down; two sliders are symmetrically arranged on the lower mold base, and the sliders have a groove structure with side openings, and the two sliders The opening direction of the groove is opposite, the two ends of the workpiece extrusion platform are inserted into the grooves of the sliders on both sides, and a bending cavity is formed between the two sliders and the workpiece extrusion platform;

The upright column is fixedly arranged at the center of the upper mold base, the bending head is connected under the upright column, and the upright column and the bending head are detachably connected.

Further, the two sides of the lower surface of the workpiece pressing platform are provided with limit posts, and the limit posts are connected to the lower edge of the groove of the slider through a second spring.

Further, circular pull rings are respectively fixed on the limit post and the lower edge of the groove of the slider, hooks are provided at both ends of the second spring, and the hooks at both ends of the second spring hook the circular pull rings.

Further, the elastic component is a first spring.

Further, the positioning pin is an elastic positioning pin.

Further, the lower end of the column is provided with a mounting hole, the mounting hole is provided with an internal thread, the upper end of the bending head is provided with a protrusion, and the periphery of the protrusion is provided with an external thread, and the internal thread matches the external thread.

Beneficial effects: the adjustable bending die provided by the present invention can adjust the length, depth and angle of the bending part only by moving the slider or replacing the first spring connected to the limit post below the workpiece extrusion platform, which can meet the Different bending process requirements improve production efficiency; the bending head and the mold are detachably connected, when the bending head is damaged or severely worn, only the bending head needs to be replaced, which is convenient for maintenance and saves costs; workpiece extrusion platform There is a spring connection with the lower mold base, which can reduce the stress on the workpiece when the column and the bending head are punching downwards, and at the same time, it can automatically return to its position after the bending process is completed.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of slider;

Fig. 3 is an enlarged view of the connection structure between the second spring, the limit post and the lower edge of the groove of the slider.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, an adjustable bending die includes an upper die set and a lower die set, the upper die set includes an upper die base 1, a column 5 and a bending head 6, and the lower die set includes a lower die set Base 2, slide block 7 and workpiece extruding platform 8, guide post 3 and guide sleeve 4 are arranged between upper die base 1 and lower die base 2.

As shown in Figures 1 and 2, the slider 7 is slidingly connected to the lower mold base 2, and the specific connection method is: the lower surface of the slider 7 is provided with a number of positioning pins 13, and the upper surface of the lower mold base is provided with a number of positioning pin holes. 12. The positioning pin 13 is an elastic positioning pin; when the mold is in use, the positioning pin 13 is inserted into the positioning pin hole 12, and the slider is relatively fixed on the lower mold base; when it is necessary to adjust the width of the bending cavity, push it horizontally Slider, the positioning pin pops out of the positioning pin hole, continue to push the slider, and the positioning pin is reinserted into another positioning pin hole.

Two sliders 7 are symmetrically arranged on the lower mold base 2 left and right, and a bending cavity can be formed between the two sliders 7 and the workpiece extrusion platform 10 .

Described slide block 7 side has the groove structure of lateral opening, and the groove opening direction of two slide blocks is opposite, and promptly left side slide block has right side opening groove, and right side slide block has left side opening groove; The two ends of the pressing platform are respectively inserted into the grooves of the slide blocks on both sides. The workpiece extruding platform 8 is connected with the lower mold base 2 through a connecting rod 10. An elastic part is arranged in the middle of the connecting rod 2, which can be stretched up and down. The elastic part is a first spring 11; the lower surface of the workpiece extruding platform 8 Both sides are provided with limit posts 81, and the limit posts 81 are connected to the lower edge of the slider groove by the second spring 9. Referring to Fig. There are hooks at both ends of the second spring, and the hooks at both ends of the second spring hook the circular pull ring, thereby connecting the limit column and the slider. By replacing the springs with different compression properties, the downward movement distance of the workpiece extrusion platform can be controlled. , so as to control the depth of the workpiece bending. The maximum compression deformation of the aforementioned first spring is greater than the maximum compression deformation of the second spring.

The column 5 is fixed at the center of the upper mold base 1, the bending head 6 is connected to the bottom of the column 5, and the column and the bending head are detachably connected. The lower end of the column 5 is provided with a mounting hole, the mounting hole is provided with an internal thread, the upper end of the bending head 6 is provided with a protrusion, and the periphery of the protrusion is provided with an external thread, and the internal thread matches the external thread. With the increase of the use time of the mold, the bending head will be worn. When the bending head is worn to a certain extent to affect the normal use, it is only necessary to replace the bending head instead of the entire upper die set. Maintenance Convenience and cost savings.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (6)

1. a kind of adjustable Bending Mould, it is characterised in that：The upper module includes upper die holder, column and bending head, under described Module includes that lower die holder, sliding block and workpiece squeeze platform, and guide post and guide sleeve, guide post are equipped between upper die holder and lower die holder It can be moved up and down along guide sleeve；

The lower die holder is equipped with several dowel holes, and several positioning pins are equipped with below sliding block, and sliding block passes through positioning with lower die holder The cooperation slidable connection of pin hole and positioning pin；The workpiece squeezes platform and is connect with lower die holder by connecting rod, the connection It is equipped with elastomeric element among bar, can stretch up and down；Symmetrical on lower die holder to set there are two sliding block, the sliding block, which opens up, laterally to be opened The groove structure of mouth, the slot opening direction of two sliding blocks is opposite, and workpiece squeezes the groove of two side slides of both ends insertion of platform Interior, two sliding blocks and workpiece squeeze formation bending cavity between platform；

The column fixes the center for being located at upper die holder, connects bending head below column, column detachably connects with bending head It connects.

2. adjustable Bending Mould according to claim 1, it is characterised in that：The workpiece squeezes platform lower surface both sides Equipped with limited post, limited post is connected with slip recess lower edge by second spring.

3. adjustable Bending Mould according to claim 2, it is characterised in that：The limited post and slip recess lower edge Upper to be fixed with round draw ring respectively, second spring both ends are equipped with hook, and second spring two ends of the hook catches on round draw ring.

4. adjustable Bending Mould according to claim 1, it is characterised in that：The elastomeric element is the first spring.

5. adjustable Bending Mould according to claim 1, it is characterised in that：The positioning pin is elastic positioning pin.

6. adjustable Bending Mould according to claim 1, it is characterised in that：The column lower end is equipped with mounting hole, peace It fills and is equipped with internal thread in hole, bending head upper end is equipped with protrusion, and raised periphery sets external screw thread, the internal thread and external screw thread phase Match.