CN201223901Y - Pneumatic double-blank pressing sheet metal bending mould - Google Patents

Abstract

The utility model discloses a pneumatic dual-blank holding metal sheet bending die, which belongs to the metal sheet bending machinery and is characterized in that a die holder and a lower die are sectioned along the length direction; the sectioned die holder and the lower die can be assembled based on the length of the bent workpieces; a vertical step hole which has smaller diameter at the upper part and larger diameter at the lower part is communicated with a lift-up slot or lift-up hole and arranged at the lower part of each die holder section, and the vertical hole is located in a large-diameter hole of each lower part; pneumatic cylinders are arranged on a soleplate; and the piston rod of each pneumatic cylinder is extended out of a small-diameter hole of each upper part to prop up the bottom plane of each lower die; at the same time, a shared gas pipe channel is arranged at the lower part of each die holder and at one side of the bottom part of each pneumatic cylinder; an intake and exhaust pipe is laid in the gas pipe channel and correspondingly connected with the gas inlet and outlet of each pneumatic cylinder; the other end of the intake and exhaust pipe is correspondingly connected with an externally arranged gas pump station with a NC stroke control device; during bending, the gas pump station is used to adjust the lift-up of the piston rods, so that the lower die is located at the best height to reduce inefficient power, as well as improve productivity and product precision.

Description

Pneumatic pair of flanging sheet metal Bending Mould

Technical field

The utility model belongs to the machine for press-bending metal sheet tool, especially relates to a kind of mould of numerical control electrohydraulic servo-type bending machine tool.

Background technology

Between the counterdie and die holder of the two flanging moulds in the existing sheet metal bending industry; basically counterdie all adopts the jacking of compression spring to reset; promptly after the sheet metal bending end of job between upper die and lower die or counterdie and the die shoe; the screen resilience pushing tow of the pressured spring that contracts of counterdie rises and resets; just can carry out the bending of next round then; but each pushing tow rises and resets; the compression spring all will be raised to highest order; counterdie also rises to highest order thereupon; so increased virtually counterdie press down bending the time the inoperative stroke, especially little workpiece to the bending drafts, idle work has increased; not only increased the consumption of power; and reduced production efficiency, in addition, compression spring height is big more; stability is poor more, just can reduce the precision of bending part finished product more.

Summary of the invention

The purpose of this utility model provides a kind of pneumatic pair of flanging sheet metal Bending Mould, can freely adjust the top lifting height of counterdie as required, and the jacking balance of movement reduces the idle work in the sheet metal bending operation effectively, further improves the precision of sheet metal bending productivity ratio and product.

The purpose of this utility model is achieved like this: a kind of pneumatic pair of flanging sheet metal Bending Mould, comprise patrix, counterdie, die holder, base plate and die holder holder, base plate is installed on the horizontal straight trough bottom land of die holder holder, the bottom cunning of die holder is contained in the horizontal straight trough of die holder holder and is packed on the base plate, the bottom of counterdie is then corresponding sliding to be contained in the jacking groove or jacking hole on body top at the bottom of the mould, patrix downwards in the V-shaped groove of counterdie bending workpieces or counterdie downwards on the plane, bottom right of counterdie and the die holder between the plane bending workpieces form two flanging bendings, it is characterized in that die holder segmentation along its length, the bottom of each section die holder is all slided in the horizontal straight trough that is contained in the die holder holder and is installed on the base plate, the counterdie of corresponding sliding dress segmentation in the jacking groove of each section die holder or jacking hole, the die holder of segmentation and the counterdie of segmentation can be by by assembly freely of the length of bending workpieces and assembly units; In addition, bottom at each section die holder, position corresponding to jacking groove or jacking hole, offer little and the vertical stepped hole that lower diameter is big of the upper diameter that communicates with it respectively, be arranged in each bottom large diameter hole, pneumatic cylinder be installed on base plate and the piston rod of each pneumatic cylinder is stretched out from the small diameter bore of top all and lean mutually with the baseplane of each section counterdie; Be positioned at a side of each pneumatic cylinder bottom simultaneously, offer shared air pipe passway in the bottom of each section die holder, in air pipe passway, lay corresponding the joining of porting of air inlet-outlet pipe and each pneumatic cylinder with ready-packaged joint, advance, the other end of blast pipe is connected with external air pump station is corresponding, air pump station has the numerical control travel control device, during bending work, press by the drafts of bending workpieces, regulate the best jacking stroke of pneumatic cylinder piston rod by the air pump station that has the numerical control travel control device, make counterdie be in best height and position, just can reduce the idle work of bender to greatest extent, boost productivity effectively and the precision of product.

A kind of pneumatic pair of flanging sheet metal Bending Mould that the utility model proposed, rational in infrastructure, safe and reliable, can freely adjust the top lifting height of counterdie as required, and jacking balance of movement, reduce the idle work in the bending operation effectively, further improve the precision of sheet metal bending productivity ratio and product.

Now the pneumatic pair of flanging sheet metal Bending Mould of in conjunction with the accompanying drawings and embodiments the utility model being carried is further described.

Description of drawings

Fig. 1 is the main cross-sectional schematic of pneumatic pair of flanging sheet metal Bending Mould proposing of the utility model.

Among Fig. 1: 1, patrix 2, workpiece I 3, counterdie 4, workpiece II 5, die holder 6, pneumatic cylinder 7, air pipe passway 8, base plate 9, die holder holder

The specific embodiment

As can be seen from Figure 1 a kind of pneumatic pair of flanging sheet metal Bending Mould, comprise patrix 1, counterdie 3, die holder 5, base plate 8 and die holder holder 9, base plate 8 is installed on the horizontal straight trough bottom land of die holder holder 9, the bottom cunning of die holder 5 is contained in the horizontal straight trough of die holder holder 9 and is packed on the base plate 8, then corresponding sliding being contained in the jacking groove or jacking hole on die holder 5 tops in the bottom of counterdie 3, patrix 1 downwards in the V-shaped groove of counterdie 3 bending workpieces I2 or counterdie 3 downward, on the plane, bottom right of counterdie 3 and the die holder 5 between the plane bending workpieces II4 form two flanging bendings, it is characterized in that die holder 5 segmentation along its length, the bottom of each section die holder 5 is all slided in the horizontal straight trough that is contained in die holder holder 9 and is installed on the base plate 8, the counterdie 3 of corresponding sliding dress segmentation in the jacking groove of each section die holder 5 or jacking hole, the die holder 5 of segmentation and the counterdie 3 of segmentation can be by by assembly freely of the length of bending workpieces and assembly units; In addition, bottom at each section die holder 5, position corresponding to jacking groove or jacking hole, offer little and the vertical stepped hole that lower diameter is big of the upper diameter that communicates with it respectively, be arranged in the big hole of each lower diameter, pneumatic cylinder 6 be installed on base plate 8 and the piston rod of each pneumatic cylinder 6 is risen from all from the little hole of upper diameter and lean mutually with the baseplane of each section counterdie 3; Be positioned at the right side of each pneumatic cylinder 6 bottom simultaneously, offer shared air pipe passway 7 in the bottom of each section die holder 5, in air pipe passway 7, lay into ready-packaged joint, advancing of blast pipe and each pneumatic cylinder 6, the exhaust outlet correspondence is joined, advance, the other end of blast pipe and external corresponding being connected of the air pump station that has the numerical control travel control device, during bending work, press by the drafts of bending workpieces I2 or workpiece II4, regulate the best jacking stroke of pneumatic cylinder 6 piston rods by the air pump station of band numerical control travel control device, make counterdie 3 be in best height and position, just can reduce the idle work of bender to greatest extent, improve the precision of sheet metal bending productivity ratio and product effectively.

Claims (1)

1, a kind of pneumatic pair of flanging sheet metal Bending Mould comprises patrix (1), counterdie (3), die holder (5), base plate (8) and die holder holder (9), it is characterized in that:

A, die holder (5) segmentation along its length, the bottom of each section die holder (5) is all slided in the horizontal straight trough that is contained in die holder holder (9) and is installed on the base plate (8), the counterdie (3) of corresponding sliding dress segmentation in the jacking groove of each section die holder (5) or jacking hole, the counterdie (3) of the die holder of segmentation (5) and segmentation is pressed by assembly freely of the length of bending workpieces and assembly unit;

B, in the bottom of each section die holder (5), position corresponding to jacking groove or jacking hole, offer little and the vertical stepped hole that lower diameter is big of the upper diameter that communicates with it respectively, be arranged in the big hole of each lower diameter, pneumatic cylinder (6) go up be installed and made to rise from the piston rod of each pneumatic cylinder (6) hole little at base plate (8) and all lean mutually with the baseplane of each section counterdie (3) from upper diameter;

C, be positioned at the right side of each pneumatic cylinder (6) bottom, offer shared air pipe passway (7) in the bottom of each section die holder (5), in air pipe passway (7), lay corresponding the joining of inlet and outlet mouth of air inlet and exhaust piper and each pneumatic cylinder (6), the other end of air inlet and exhaust piper and external corresponding being connected of the air pump station that has the numerical control travel control device with ready-packaged joint.