CN112275851B

CN112275851B - Die splicing device and method of full-automatic bending equipment

Info

Publication number: CN112275851B
Application number: CN202011076993.2A
Authority: CN
Inventors: 徐丰羽; 华德荣; 陈自新
Original assignee: Nanjing Yunshang Automation Technology Co ltd
Current assignee: Jiangsu Ruiteng Intelligent Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2022-05-06
Anticipated expiration: 2040-10-10
Also published as: CN112275851A

Abstract

The invention discloses a die splicing knife device and a method of full-automatic bending equipment, which comprises a die seat, a bending die, an adjusting die turnover mechanism, a die moving mechanism and a die distance uniform dividing mechanism, wherein the die seat is provided with a die base; the bending die comprises a fixed die, a movable die and an adjusting die; the fixed die is arranged in the center of the bottom of the die base; the adjusting dies are symmetrically arranged at the two sides of the fixed die, and each adjusting die can turn outwards; the movable dies are symmetrically arranged on two sides of the adjusting die and can slide and be locked; each moving die is provided with a fixed guide surface and a movable guide surface; the mold distance halving mechanism comprises a plurality of wedge-shaped blocks; each wedge-shaped block is provided with two guide inclined planes which are symmetrically arranged and can be respectively matched with the fixed guide plane and the movable guide plane in a sliding way; all wedge blocks can synchronously swing. The length of the bending die can be automatically adjusted, and the gap between the dies can be equally divided while the length of the bending die is adjusted, so that the machining precision is greatly improved, and the flexible machining requirements of non-standard workpieces of various types, small batches and the like are met.

Description

Die splicing knife device and method of full-automatic bending equipment

Technical Field

The invention relates to the field of bending of metal plates, in particular to a die splicing knife device and a die splicing knife method of full-automatic bending equipment.

Background

In the field of industrial production, the proportion of metal plates is very high, taking the automobile industry as an example, the proportion of the metal plates in forming processing accounts for about 60%, the proportion of the metal plates in white appliance industry accounts for about 50%, and the proportion of the metal plates in industries such as electric appliance cabinets, express delivery cabinets, file cabinets and the like accounts for more than 95%.

In recent years, numerical control metal plate processing equipment is developing towards automation, intellectualization, high speed and high precision. In the metal plate forming industry, the bending processing of the plate is a process with the greatest difficulty, and is also a process with the greatest automation difficulty. The overall technical level of the method determines the technical level of the whole metal plate processing field.

The conventional bending process of the metal plate is a three-point bending process, and the principle of the bending process is shown in fig. 1.

According to the processing mode, the upward overturning action can be generated in the plate bending process, so that the processing precision is influenced, the personal safety of an operator is influenced, and the labor intensity is high.

To solve this problem, there are two solutions:

1. adopting an auxiliary material supporting mechanism: for example, the invention discloses a Chinese patent with the application number of 201810934350.3 and the invention name of a bending follow-up material supporting device, and a Chinese patent with the application number of 201010194128.8 and the invention name of a numerical control bending machine synchronous follow-up material supporting device. Although the scheme can improve the processing precision, reduce the labor intensity and improve the operation safety to a certain extent, the scheme still needs manual participation, is in a semi-automatic mode and has low production efficiency.

2. Bending with the aid of a robot: for example, the invention discloses a Chinese utility model patent with the application number of 201820081641.8 entitled "a sheet metal bending robot with seven additional shafts" and a Chinese invention patent with the application number of 201811527563.0 entitled "a sheet metal processing robot follow-up bending control method". In a similar way, the scheme can improve the processing precision to a certain extent, reduce labor intensity and improve operation safety, however, the robot is higher in price and large in occupied area, the following action of the robot and the bending action consistency of the bending machine do not influence the precision well, and in the working process, the robot needs to carry out operations such as carrying, overturning and positioning on plates for many times, and the processing efficiency is seriously influenced.

Therefore, people develop a bending processing technology and a processing device of a 'flanging' processing mode aiming at subdivision industries such as electric appliance cabinets, cabinets and the like, and the bending processing technology and the processing device are specifically shown in fig. 2. However, the bending processing technology has the advantages of efficiency, safety, precision, automation and the like which are incomparable with the three-point bending because the plate surface does not turn over in the bending process. However, in actual production, the flexible processing requirements of non-standard workpieces such as various types and small batches are increasing day by day. In order to meet the flexible processing requirement, an automatic adjustment technology of the length of the die is necessary.

When the length of the die is not adjusted, the die needs to be shut down for manual operation every time when the die is switched to process parts, so that the die obviously cannot meet the processing requirements of small-batch and multiple varieties, and the intelligent degree is too low. In addition, when the adjustment of the dies is realized, the uniform division cannot be realized if the sizes of the gaps between the N sections of dies are different, so that the machining precision is seriously influenced at the larger position of the gap between the dies.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a die splicing knife device and a method of full-automatic bending equipment aiming at the defects of the prior art, the die splicing knife device and the method of the full-automatic bending equipment can automatically adjust the length of a die, and can equally divide the gap between the dies while adjusting, thereby greatly improving the processing precision, and further adapting to the flexible processing requirements of non-standard workpieces of various types, small batches and the like.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a full-automatic equipment of bending's mould piece together sword device, includes mould seat, bender, adjustment mould tilting mechanism, mould moving mechanism and mould distance equipartition mechanism.

The bending die comprises a fixed die, a plurality of movable dies and a plurality of adjusting dies.

The fixed mould is arranged at the center of the bottom of the mould seat and is fixed in position.

And the adjusting dies are symmetrically arranged on the side walls of the die seats on the two sides of the fixed die, and each adjusting die can be turned outwards under the action of the adjusting die turning mechanism.

The movable dies are symmetrically arranged at the centers of the bottoms of the die seats at the two sides of the fixed die and the adjusting die, and each movable die can slide and be locked along the length direction of the die seat under the action of the die moving mechanism.

Each moving die has a fixed guide surface and a movable guide surface.

The mold distance equipartition mechanism comprises a plurality of wedge-shaped blocks or springs. And a wedge block or a spring is respectively arranged between two adjacent movable dies and between the movable die and the adjacent adjusting die.

When the mold distance uniform distribution mechanism is a wedge-shaped block, each wedge-shaped block is perpendicular to the length direction of the mold seat, and the inner side end of each wedge-shaped block is provided with two guide inclined planes which are symmetrically distributed. The two guide inclined planes can be respectively matched with the fixed guide surface and the movable guide surface in a sliding way.

Each wedge block can freely slide along the length direction of the die seat, and all the wedge blocks can synchronously swing around an axis parallel to the length direction of the die seat.

When the mold distance uniform distribution mechanism is provided with springs, each spring is distributed along the length direction of the mold seat.

Each moving die includes a moving die body and a sliding block.

The movable die body comprises a guide post sliding groove, a movable guide matching surface and a fixed guide surface.

The fixed guide surface is arranged on the left side wall of the movable mould body, and the movable guide matching surface is arranged on the right side wall of the movable mould body.

The guide post sliding groove is vertically arranged at the center of the top of the movable mould body and is communicated with the movable guide matching surface. The guide post top is provided with the stop pin, and the stop pin can insert and close in the mould seat, and is spacing to sliding of moving the mould.

The sliding block comprises a guide post and the movable guide surface. The movable guide surface is arranged at the bottom of the side wall of the guide post through the guide connecting rod.

The outer wall surface of the guide column is in sealed sliding fit with the inner wall surface of the guide column sliding groove, and the movable guide surface is in sliding fit with the movable guide matching surface.

The guide post can slide from top to bottom along the guide post spout under the effect of guide post drive arrangement, and simultaneously, the activity spigot surface slides from top to bottom along the movable guide fitting surface under the drive of guide post. The height of the movable guide matching surface is not less than twice of the height of the movable guide surface.

The guide post driving device is a cylinder, and the movable die body further comprises a piston chute coaxially arranged at the bottom of the guide post chute. The sliding block further comprises a piston, the piston is coaxially arranged at the bottom of the guide post through a piston connecting rod, and the diameters of the guide post, the piston and the piston connecting rod are gradually decreased.

The outer wall surface of the piston is in sealing sliding fit with the inner wall surface of the piston sliding groove, the bottom of the guide column and the piston sliding groove are enclosed to form a cylinder shell, and the piston divides the inner cavity of the cylinder shell into an upper cavity and a lower cavity. The upper cavity and the lower cavity are respectively connected with an external air source. The cylinder shell, the piston, the upper cavity and the lower cavity which can be inflated and deflated form a cylinder together.

The mold distance equalizing mechanism further comprises a rotating shaft and equalizing moving arms, the number of the equalizing moving arms is equal to that of the wedge blocks.

The rotating shaft is arranged on the side wall of the die seat and is parallel to the length direction of the die seat, and the rotating shaft can rotate around the axis of the rotating shaft under the action of the rotating shaft driving device.

The equal division moving arms correspond to the wedge blocks one by one, the bottom ends of the equal division moving arms are connected with the outer side ends of the corresponding wedge blocks, and the top ends of the equal division moving arms are sleeved on the rotating shaft and can freely slide along the length direction of the rotating shaft without radial displacement.

The wedge block located on the left side of the fixed mold is referred to as a left side wedge block, and the wedge block located on the right side of the fixed mold is referred to as a right side wedge block.

The rotating shaft comprises a left rotating shaft and a right rotating shaft which can synchronously rotate. The left rotating shaft and the right rotating shaft are positioned on the same axis of two sides of the adjusting die turnover mechanism and are parallel to the length direction of the die seat.

All the left wedge blocks are sleeved on the left rotating shaft through the corresponding uniform moving arms,

all right side wedges all divide the shifting arm suit through corresponding equally on the right side pivot.

The mold moving mechanism includes a left moving mechanism and a right moving mechanism.

And the left moving mechanism and the right moving mechanism respectively comprise a moving slide rail, a mould adjusting arm and a mould adjusting rod.

The movable slide rails in the left moving mechanism and the right moving mechanism are symmetrically arranged on the side wall of the die seat on the upper portion of the rotating shaft and on two sides of the adjusting die turnover mechanism.

Each movable sliding rail is parallel to the length direction of the die seat, and each movable sliding rail is connected with one die adjusting arm in a sliding mode. The bottom of every accent mould arm all sets up one and transfers the mould pole, every transfers the length direction that the mould pole all is perpendicular to the mould seat, and length can stretch out and draw back.

Each movable die is provided with a die adjusting hole which can be inserted with the die adjusting rod.

Every adjusting die all is the slice, and the top inboard of every adjusting die all is articulated with mould seat lateral wall, and the top outside of every adjusting die all is articulated mutually with adjusting die tilting mechanism.

The inner sides of the tops of all the adjusting dies are hinged to a die holder mounting rod, and the die holder mounting rod is mounted on the side wall of the die holder above the fixed die along the length direction of the die holder.

A die splicing method of full-automatic bending equipment is characterized by comprising the following steps: comprises the following steps.

Step 1, determining an assembling combination mode of a bending die: and determining the total length L of the bending die according to the length of the workpiece to be bent. And selecting the required number n of the movable dies and the adjustment modulus m according to the total length L of the bending die.

Step 2, adjusting the die to overturn: and (4) according to the number m of the adjusting dies selected in the step (1), turning all the remaining unselected adjusting dies far away from the fixed die upwards through an adjusting die turning mechanism, and lifting the adjusting dies away from the die combination position.

Step 3, unlocking the movable mold: the upper cavity of the cylinder is inflated, the piston moves downwards along the piston chute, the guide post moves downwards along the guide post chute, and the locking pin positioned at the top of the guide post releases the locking with the die seat. Meanwhile, the movable guide surface is driven by the guide post to synchronously move downwards along the movable guide matching surface. At this time, the movable guide surface and the fixed guide surface are symmetrically arranged.

Step 4, limiting the total length L of the bending die: the mold moving mechanism adjusts the position of the movable mold according to the total length L of the size of the bending mold, slides the rest unselected movable molds to two sides of the mold seat, moves the selected n movable molds to the L size, supposes that two movable molds at the outermost side in the L size are called limiting movable molds, and other movable molds in the L size are called positioning movable molds. The total length between the two limiting moving dies is exactly L. Then, the mold moving mechanism is reset.

Step 5, locking the mobile mold and the limiting mobile mold is not selected: and inflating the lower cavities in the unselected movable die and the limiting movable die, moving the piston upwards along the piston sliding groove, moving the guide post upwards along the guide post sliding groove until the locking pin at the top of the guide post is locked with the die seat and cannot move in the X direction. Meanwhile, the movable guide surface is driven by the guide post to move upwards synchronously along the movable guide matching surface. At this time, the movable guide surface is positioned above the fixed guide surface, and the bottom height of the movable guide surface is higher than the top height of the fixed guide surface. The wedge block in the mold distance equalizing mechanism has only one guide inclined plane matching the fixed guide plane and the other guide inclined plane incapable of matching the movable guide plane.

Step 6, uniformly dividing gaps: the wedge blocks in the mold distance equalizing mechanism are respectively positioned between the limiting movable mold and the positioning movable mold, between the adjacent positioning movable molds and between the positioning movable mold and the adjusting mold. And (4) all the positioning moving dies are in the unlocking state of the step (3) and can slide along the X direction. One guide inclined plane of each wedge-shaped block is matched with the movable guide plane on the left side, and the other guide inclined plane is matched with the fixed guide plane on the right side. All the wedge blocks are driven by the rotating shaft synchronously to swing along the rotating shaft in a rotating mode, so that the gap between every two adjacent movable dies is changed, and the die distance in the L size is divided equally.

And 7, positioning and locking a movable mold: and a lower cavity in the positioning moving die is inflated, the piston moves upwards along the piston sliding groove, and the guide post moves upwards along the guide post sliding groove until the locking pin at the top of the guide post is locked with the die seat and cannot move in the X direction. Then, the mold distance averaging mechanism is reset.

The invention has the following beneficial effects: the length of the bending die can be automatically adjusted, and the gap between the dies can be equally divided while the length of the bending die is adjusted, so that the machining precision is greatly improved, and the flexible machining requirements of non-standard workpieces of various types, small batches and the like are met.

Drawings

Fig. 1 shows a schematic diagram of the principle of a conventional "three-point" bending process for metal sheets.

Fig. 2 shows a schematic diagram of the prior art "flanging" process for electrical cabinets or cupboards.

Fig. 3 shows a schematic structural diagram of a die splicing knife device of the full-automatic bending equipment.

Fig. 4 shows a schematic view of the mounting position of the hemming die on the die holder.

FIG. 5 is a schematic view showing a state of the split of the hemming die.

Fig. 6 shows a schematic view of the entire structure of the moving die.

Fig. 7 shows a cross-sectional view a-a in fig. 6.

Fig. 8 shows a cross-sectional view B-B in fig. 6.

Fig. 9 shows a schematic structural view of the moving mold body in the present invention.

FIG. 10 is a schematic diagram of the slider structure of the present invention.

Fig. 11 shows a schematic view of the structure of the turnover mechanism of the conditioning die of the present invention.

Fig. 12 shows an enlarged schematic view of the region circled a in fig. 11.

Fig. 13 shows a schematic view of the structure of the adjusting die of the present invention.

Fig. 14 is a schematic view showing the position locking of the moving mold in the present invention.

Fig. 15 shows a schematic view of the wedge blocks mating with the moving mold when the moving mold is locked.

FIG. 16 shows a schematic view of the position of the slider when the moving mold is locked.

Fig. 17 is a schematic view showing the unlocking of the moving die and the gap adjustment in the present invention.

Fig. 18 shows a schematic view of the engagement of the wedge blocks with the moving die when the moving die is unlocked.

FIG. 19 shows a schematic view of the position of the slider when the moving mold is unlocked.

Fig. 20 shows a first gap equalizing diagram of a second embodiment of the mold distance equalizing mechanism.

Fig. 21 shows a second embodiment gap-equalizing mechanism of the mold distance-equalizing mechanism.

Among them are:

10. a mold base; 11. a moving die sliding groove;

20. a fixed mold;

30. moving the mold;

31. moving the mold body; 311. a guide post chute; 312. a piston chute; 313. a movable guide mating surface; 314. fixing the guide surface; 315. adjusting a die hole; 316. a rectangular groove; 317, an L-shaped groove;

32. a slider; 321. a guide post; 322. a locking pin; 323. a piston; 324. a piston connecting rod; 325. a movable guide surface; 326. a guide link;

40. adjusting a die; 41. a die holder hinge point; 42. turning over a driving point; 43. a die holder mounting rod;

50. adjusting a die turnover mechanism; 51. a drive link; 52. a turnover driving device;

60. a mold moving mechanism; 61. moving the slide rail; 62. adjusting a mold arm; 63. a mold adjusting rod;

70. a mold distance uniform mechanism; 71. a rotating shaft; 72. equally dividing the moving arms; 73. a wedge block;

80. a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.

As shown in fig. 3, a die splicing device of a full-automatic bending apparatus includes a die base 10, a bender, a trimming die turnover mechanism 50, a die moving mechanism 60, and a die distance equalizing mechanism 70.

The bender includes a fixed die 20, a plurality of movable dies 30, and a plurality of adjusting dies 40.

The fixed mould is preferably detachably arranged at the center of the bottom of the mould seat and is fixed in position. In the present invention, the longitudinal direction of the stent is preferably taken as the X-axis.

And the adjusting dies are symmetrically arranged on the side walls of the die seats on the two sides of the fixed die, wherein the adjusting die positioned on the left side of the fixed die is called a left adjusting die, the adjusting die positioned on the right side of the fixed die is called a right adjusting die, and the number of the left adjusting die and the right adjusting die is equal.

As shown in fig. 13, each adjusting die is sheet-shaped, a connecting convex part with a corner is preferably arranged on the outer side of the top of each adjusting die, a die holder hinge point 41 is arranged on the inner side of the connecting convex part, and a turning driving point 42 is arranged on the outer side of the top of the connecting convex part.

As shown in fig. 11 and 12, die holder mounting rods 43 are preferably provided in the X-direction on the die holder side walls above the fixed die, and each of the adjusting dies is hinged to the die holder mounting rods 43 through die holder hinge points 41.

The trimming die flipping mechanism preferably includes a drive link 51 and a flipping drive 52. The number of the driving connecting rods is equal to that of the adjusting dies, one end of each driving connecting rod is hinged with the overturning driving point 42 of each adjusting die, the other end of each driving connecting rod is connected with an overturning driving device, and the overturning driving device is preferably an air cylinder, an oil cylinder or a motor.

And each adjusting die can be adjusted to outwards turn around the die seat mounting rod 43 under the action of the adjusting die turning mechanism and leave the splicing position of the bending die. In fig. 12, assuming that the thickness of the adjusting dies along the X direction is C, when one of the adjusting dies is turned up, the splicing position of the bending die forms a gap C, and the purpose of adjusting the length of the die can be achieved by moving and adjusting the subsequent moving die.

The center of the bottom of the die base on both sides of the fixed die is preferably symmetrically provided with moving die sliding grooves 11. The plurality of movable dies are symmetrically and slidably installed in the movable die sliding grooves and slide and are locked along the movable die sliding grooves under the action of the die moving mechanism.

As shown in fig. 6, 7 and 8, each moving die includes a moving die body 31 and a slide block 32.

As shown in fig. 9, the moving die body includes a guide post slide groove 311, a piston slide groove 312, a movable guide mating surface 313, a fixed guide surface 314, a die adjustment hole 315, a rectangular groove 316, and an L-shaped groove 317.

The guide post spout sets up in the top center of removing the mould body, and the coaxial setting of piston spout is in guide post spout bottom.

The fixed guide surface is arranged on the left side wall of the movable die body.

The movable guide matching surface is arranged on the right side wall of the movable mould body, and the cross section of the movable guide matching surface is an L-shaped groove; the top of the movable guide matching surface is lower than the top surface of the movable mould body, so that the top surface type groove of the movable mould body slides to the blocking surface.

The rectangular channel sets up at the removal mould body top of guide post spout one side, and communicates guide post spout and activity direction fitting surface.

The L-shaped groove 317 is preferably disposed below the moveable guide mating surface, preferably having a smaller cross-section than the moveable guide mating surface.

As shown in fig. 10, the slide block includes a guide post 321, a plunger 323, and a movable guide surface 325.

The piston is coaxially arranged at the bottom of the guide post through a piston connecting rod 324, and the diameters of the guide post, the piston and the piston connecting rod are sequentially decreased progressively. The movable guide surface is arranged at the bottom of the side wall of the guide post through a guide connecting rod 326, and the bottom of the guide post connecting rod is preferably flush with the bottom surface of the guide post; the top of the movable guide surface is preferably flush with the top of the guide post link, but the bottom of the movable guide surface is below the guide post link. Further, the guide post top is provided with the stop pin 322, and the stop pin can be inserted and shut in the mould seat, and is spacing to moving die's slip.

The outer wall surface of the guide column is in sealed sliding fit with the inner wall surface of the guide column sliding groove, the outer wall surface of the piston is in sealed sliding fit with the inner wall surface of the piston sliding groove, the guide column is connected and positioned in the rectangular groove, the movable guide surface is in sliding fit with the movable guide matching surface, and the height of the movable guide matching surface is preferably not less than twice of the height of the movable guide surface.

The bottom of the guide post and the piston chute are enclosed to form a cylinder shell, and the piston divides the inner cavity of the cylinder shell into an upper cavity and a lower cavity.

The upper cavity is preferably connected with an external air source through a rectangular groove, and the lower cavity is preferably connected with the external air source through an L-shaped groove. The cylinder shell, the piston, the upper cavity and the lower cavity which can be inflated and deflated form a cylinder together. The preferred cylinder that adopts of this embodiment is as guide post drive arrangement for the guide post that drives slides from top to bottom along the guide post spout. Meanwhile, the movable guide surface is driven by the guide post to slide up and down along the movable guide matching surface.

The left moving mechanism and the right moving mechanism respectively comprise a moving slide rail 61, a mold adjusting arm 62 and a mold adjusting rod 63.

The movable slide rails in the left moving mechanism and the right moving mechanism are symmetrically arranged on the side walls of the die seats at two sides of the adjusting die turnover mechanism.

Each movable sliding rail is parallel to the length direction of the die seat, and each movable sliding rail is connected with one die adjusting arm in a sliding mode. The bottom of every accent mould arm all sets up one and transfers the mould pole, every transfers the length direction that the mould pole all is perpendicular to the mould seat, and length can stretch out and draw back. The mold adjusting rod can be inserted into the mold adjusting hole on each movable mold.

In the present invention, the die distance averaging mechanism preferably has the following two embodiments.

Example 1

As shown in fig. 17, the mold distance equalizing mechanism includes a rotating shaft 71, a plurality of wedge blocks 73, and an equalizing moving arm 72 equal in number to the wedge blocks. And a wedge block is respectively arranged between two adjacent movable dies and between the movable die and the adjacent adjusting die.

Each wedge block is perpendicular to the length direction of the die seat, and the inner side end of each wedge block is provided with two guide inclined planes which are symmetrically distributed. The two guide inclined planes can be respectively matched with the fixed guide surface and the movable guide surface in a sliding way.

In this embodiment, preferably, there are two rotating shafts, which are respectively a left rotating shaft and a right rotating shaft that rotate synchronously.

The left rotating shaft and the right rotating shaft are preferably located on the two sides of the adjusting die turnover mechanism and located on the same axis below the movable slide rail, and are parallel to the length direction of the die seat.

The wedge block located on the left side of the fixed mold is called a left side wedge block, and the wedge block located on the right side of the fixed mold is called a right side wedge block.

All left side wedges all divide the moving arm suit through corresponding equally on the pivot of left side, and all right side wedges all divide the moving arm suit through corresponding equally on the pivot of right side.

The equal-division moving arms are in one-to-one correspondence with the wedge blocks, the bottom ends of the equal-division moving arms are connected with the outer side ends of the corresponding wedge blocks, and the top ends of the equal-division moving arms are sleeved on the left rotating shaft or the right rotating shaft and can freely slide along the length direction of the left rotating shaft or the right rotating shaft without radial displacement, namely relative rotation.

Each wedge block is driven by the corresponding equal-dividing moving arm to freely slide along the length direction of the die seat, and all the wedge blocks synchronously swing around the left rotating shaft or the right rotating shaft under the rotating drive of the left rotating shaft or the right rotating shaft.

Example 2

As shown in fig. 20 and 21, the mold distance equalizing mechanism includes a plurality of springs, one spring is respectively disposed between two adjacent moving dies and between a moving die and an adjacent adjusting die, and each spring is disposed along the length direction of the mold base.

The spring between two adjacent moving dies is preferably installed in the following way: and a spring mounting groove is preferably formed in one opposite side of each of the two adjacent movable dies, and two ends of each spring are respectively positioned in the spring mounting grooves. One end or two ends of the spring are respectively connected with the spring mounting groove.

The spring installation mode between the movable die and the adjacent adjusting die is as follows: be provided with spring mounting groove in the removal mould towards the adjustment mould, the one end of spring is connected with spring mounting groove, and the other end and the adjustment mould elastic contact of spring do not influence upwards lifting of adjustment mould.

A die splicing method of full-automatic bending equipment comprises the following steps.

Step 1, determining an assembling combination mode of a bending die: determining the total length L of a bending die according to the length of a workpiece to be bent; and selecting the required number n of the movable dies and the adjustment modulus m according to the total length L of the bending die.

The purpose of moving the die in the present invention is for large size adjustment, such as 100 and 200mm, and the purpose of adjusting the die is for small size "modular" adjustment, such as 10 x 5=50, 10 x 4= 40. The desired "L" dimension is finally obtained by a combination of moving and adjusting the die.

Specific examples are as follows: the fixed die width was 80mm, the width of each moving die was 100mm, and the width of each adjusting die was 10 mm. When the total length L of the required bending die is 703mm, the selection combination mode is as follows: l =80 (fixed die) +6 × 100 (moving die) +2 × 10 (adjusting die) +3mm (gap). That is, it is necessary to select 6 moving dies and 2 adjusting dies, and further, 3 left moving dies, 3 right moving dies, 1 left adjusting die and 1 right adjusting die.

The mold distance equalizing mechanism of the invention can evenly distribute the 3mm gap among the moving molds.

Step 3, unlocking the movable mold: the upper cavity of the cylinder is inflated, the piston moves downwards along the piston chute, the guide post moves downwards along the guide post chute, and the locking pin positioned at the top of the guide post releases the locking with the die seat; meanwhile, the movable guide surface is driven by the guide post to synchronously move downwards along the movable guide matching surface until the movable guide surface is positioned at the lower position shown in fig. 19, and at the moment, the movable guide surface and the fixed guide surface are symmetrically arranged.

Step 4, limiting the total length L of the bending die: the mould moving mechanism adjusts the position of the moving mould according to the total length L of the size of the bending mould, slides the rest unselected moving moulds to two sides of the mould seat, moves the selected n moving moulds into the L size, and supposes that two moving moulds positioned at the outermost side in the L size are called limiting moving moulds and the rest moving moulds in the L size are called positioning moving moulds; the total length between the two limiting moving dies (including the length of the two limiting moving dies) is just L; then, the mold moving mechanism is reset.

Step 5, locking the mobile mold and the limiting mobile mold is not selected: inflating the lower cavity in the unselected movable die and the limiting movable die, moving the piston upwards along the piston sliding groove, moving the guide post upwards along the guide post sliding groove until the locking pin at the top of the guide post is locked with the die seat and cannot move in the X direction; meanwhile, the movable guide surface is driven by the guide post to move up synchronously along the movable guide matching surface until the movable guide surface is positioned at the upper position shown in fig. 16, at this time, the movable guide surface is positioned above the fixed guide surface, and the bottom height of the movable guide surface is preferably higher than the top height of the fixed guide surface. Only one guide inclined surface of the wedge block in the mold distance equalizing mechanism is matched with the fixed guide surface, and the other guide inclined surface of the wedge block cannot be matched with the movable guide surface, as shown in fig. 14 and 15.

Step 6, the gaps are evenly divided, and the following two preferred embodiments are provided.

Example 1

The wedge blocks in the mold distance equalizing mechanism are respectively positioned between the limiting moving mold and the positioning moving mold, between the adjacent positioning moving molds and between the positioning moving mold and the adjusting mold; and (4) all the positioning moving dies are in the unlocking state of the step (3) and can slide along the X direction. One guiding inclined surface of each wedge block is matched with the movable guiding surface on the left side, and the other guiding inclined surface is matched with the fixed guiding surface on the right side, as shown in fig. 17 and 18, namely the wedge block is matched with the V-shaped guiding surfaces (one movable guiding surface and one fixed guiding surface) of two adjacent moving dies.

All the wedge blocks are driven by the rotating shaft synchronously to swing along the rotating shaft. At the moment, the wedge-shaped guide surface is pushed by the wedge-shaped block to move, so that the gap between two adjacent moving molds is changed. Because the wedge block can be freely automatic along the axis direction of the rotating shaft, and the corners of all the wedge blocks are the same, the distances among the movable molds can be uniformly distributed, the positions of all the movable molds are also repositioned, and the uniform distribution of the mold distances in the L size is completed.

Example 2

The spring in the die distance equalizing mechanism is preferably the same in length and elastic coefficient, and the length of the spring is larger than the width of the gap to be equalized; therefore, each moving die freely slides left and right in the free reset motion of the spring, namely, the positions of all the positioning moving dies are repositioned, and the die distance in the L size is uniformly divided.

And 7, positioning and locking a movable mold: and a lower cavity in the positioning moving die is inflated, the piston moves upwards along the piston chute, and the guide post moves upwards along the guide post chute until the locking pin at the top of the guide post is locked with the die seat and cannot move in the X direction. Then, the mold distance equalization mechanism is reset.

Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.

Claims

1. The utility model provides a sword device is pieced together to mould of full-automatic equipment of bending which characterized in that: the bending die comprises a die seat, a bending die, an adjusting die turnover mechanism, a die moving mechanism and a die distance uniform dividing mechanism;

the bending die comprises a fixed die, a plurality of movable dies and a plurality of adjusting dies;

the fixed die is arranged at the center of the bottom of the die base and is fixed in position;

the adjusting dies are symmetrically arranged on the side walls of the die seats at the two sides of the fixed die, and each adjusting die can be turned outwards under the action of the adjusting die turning mechanism;

the plurality of movable dies are symmetrically arranged at the centers of the bottoms of the die seats at the two sides of the fixed die and the adjusting die, and each movable die can slide and be locked along the length direction of the die seat under the action of the die moving mechanism;

each moving die is provided with a fixed guide surface and a movable guide surface;

the mold distance equipartition mechanism comprises a plurality of wedge-shaped blocks or a plurality of springs; a wedge block or a spring is respectively arranged between two adjacent movable dies and between the movable die and the adjacent adjusting die;

when the mold distance equalizing mechanism is a wedge-shaped block, each wedge-shaped block is vertical to the length direction of the mold seat, and the inner side end of each wedge-shaped block is provided with two guide inclined planes which are symmetrically distributed; the two guide inclined planes can be respectively matched with the fixed guide plane and the movable guide plane in a sliding way;

each wedge block can freely slide along the length direction of the die seat, and all the wedge blocks can synchronously swing around an axis parallel to the length direction of the die seat;

2. The die splicing knife device of the full-automatic bending equipment according to claim 1, characterized in that: each moving die comprises a moving die body and a sliding block;

the movable die body comprises a guide post sliding groove, a movable guide matching surface and a fixed guide surface;

the fixed guide surface is arranged on the left side wall of the movable mould body, and the movable guide matching surface is arranged on the right side wall of the movable mould body;

the guide post sliding groove is vertically arranged in the center of the top of the movable mould body and is communicated with the movable guide matching surface;

the sliding block comprises a guide post and the movable guide surface; the movable guide surface is arranged at the bottom of the side wall of the guide post through the guide connecting rod;

the top of the guide post is provided with a locking pin which can be inserted into the die seat to limit the sliding of the movable die;

the outer wall surface of the guide column is in sealed sliding fit with the inner wall surface of the guide column sliding groove, and the movable guide surface is in sliding fit with the movable guide matching surface;

the guide post can slide up and down along the guide post sliding groove under the action of the guide post driving device, and meanwhile, the movable guide surface is driven by the guide post to slide up and down along the movable guide matching surface; the height of the movable guide matching surface is not less than twice of the height of the movable guide surface.

3. The die splicing knife device of the full-automatic bending equipment according to claim 2, characterized in that: the guide post driving device is an air cylinder, and the movable die body further comprises a piston chute coaxially arranged at the bottom of the guide post chute; the sliding block also comprises a piston, the piston is coaxially arranged at the bottom of the guide post through a piston connecting rod, and the diameters of the guide post, the piston and the piston connecting rod are sequentially decreased;

the outer wall surface of the piston is in sealed sliding fit with the inner wall surface of the piston sliding groove, the bottom of the guide post and the piston sliding groove are enclosed to form a cylinder shell, and the piston divides the inner cavity of the cylinder shell into an upper cavity and a lower cavity; the upper cavity and the lower cavity are respectively connected with an external air source; the cylinder shell, the piston, the upper cavity and the lower cavity which can be inflated and deflated form a cylinder together.

4. The die splicing knife device of the full-automatic bending equipment according to claim 3, characterized in that: when the mold distance equalizing mechanism is provided with the wedge-shaped blocks, the mold distance equalizing mechanism also comprises a rotating shaft and equalizing moving arms with the same number as the wedge-shaped blocks;

the rotating shaft is arranged on the side wall of the die seat and is parallel to the length direction of the die seat, and the rotating shaft can rotate around the axis of the rotating shaft under the action of the rotating shaft driving device;

5. The die splicing knife device of the full-automatic bending equipment according to claim 4, characterized in that: the wedge block positioned on the left side of the fixed mould is called a left side wedge block, and the wedge block positioned on the right side of the fixed mould is called a right side wedge block;

the rotating shaft comprises a left rotating shaft and a right rotating shaft which can synchronously rotate; the left rotating shaft and the right rotating shaft are positioned on the same axis at two sides of the adjusting die turnover mechanism and are parallel to the length direction of the die seat;

all the left wedge blocks are sleeved on the left rotating shaft through the corresponding equal-division moving arms,

6. The die splicing knife device of the full-automatic bending equipment according to claim 5, characterized in that: the mould moving mechanism comprises a left moving mechanism and a right moving mechanism;

the left moving mechanism and the right moving mechanism respectively comprise a moving slide rail, a mould adjusting arm and a mould adjusting rod;

the movable slide rails in the left moving mechanism and the right moving mechanism are symmetrically arranged on the side wall of the die seat on the two sides of the adjusting die turnover mechanism and above the rotating shaft;

each movable sliding rail is parallel to the length direction of the mold base, and each movable sliding rail is connected with one mold adjusting arm in a sliding manner; the bottom of each mold adjusting arm is provided with a mold adjusting rod, each mold adjusting rod is perpendicular to the length direction of the mold base, and the length of each mold adjusting rod can be extended and retracted;

each movable die is provided with a die adjusting hole which can be inserted into the die adjusting rod.

7. The die splicing knife device of the full-automatic bending equipment according to claim 5, characterized in that: every adjusting die all is the slice, and the top inboard of every adjusting die all is articulated with mould seat lateral wall, and the top outside of every adjusting die all is articulated mutually with adjusting die tilting mechanism.

8. The die splicing knife device of the full-automatic bending equipment according to claim 7, characterized in that: the inner sides of the tops of all the adjusting dies are hinged to a die holder mounting rod, and the die holder mounting rod is mounted on the side wall of the die holder above the fixed die along the length direction of the die holder.

9. A die splicing method of full-automatic bending equipment is based on the die splicing device of the full-automatic bending equipment as claimed in any one of claims 4 to 8, and is characterized in that: the method comprises the following steps:

step 1, determining an assembling combination mode of a bending die: determining the total length L of a bending die according to the length of a workpiece to be bent; selecting the required number n of the movable dies and the adjustment modulus m according to the total length L of the bending die;

step 2, adjusting the die to overturn: according to the number m of the adjusting dies selected in the step 1, all the remaining unselected adjusting dies far away from the fixed die are turned upwards and lifted through the adjusting die turning mechanism and leave the die combination position;

step 3, unlocking the movable mold: the upper cavity of the cylinder is inflated, the piston moves downwards along the piston chute, the guide post moves downwards along the guide post chute, and the locking pin positioned at the top of the guide post releases the locking with the die seat; meanwhile, the movable guide surface is driven by the guide post to synchronously move downwards along the movable guide matching surface; at the moment, the movable guide surface and the fixed guide surface are symmetrically arranged;

step 4, limiting the total length L of the bending die: the mould moving mechanism adjusts the position of the moving mould according to the total length L of the size of the bending mould, slides the rest unselected moving moulds to two sides of the mould seat, moves the selected n moving moulds into the L size, and supposes that two moving moulds positioned at the outermost side in the L size are called limiting moving moulds and the rest moving moulds in the L size are called positioning moving moulds; the total length between the two limiting moving dies is just L; then, the mould moving mechanism is reset;

step 5, locking the mobile mold and the limiting mobile mold is not selected: inflating the lower cavity in the unselected movable die and the limiting movable die, moving the piston upwards along the piston sliding groove, moving the guide post upwards along the guide post sliding groove until the locking pin at the top of the guide post is locked with the die seat and cannot move in the X direction; meanwhile, the movable guide surface is driven by the guide post to synchronously move upwards along the movable guide matching surface; at the moment, the movable guide surface is positioned above the fixed guide surface, and the bottom height of the movable guide surface is higher than the top height of the fixed guide surface; only one guide inclined plane of a wedge block in the mold distance equalizing mechanism is matched with the fixed guide plane, and the other guide inclined plane cannot be matched with the movable guide plane;

step 6, uniformly dividing gaps: the wedge blocks in the mold distance equalizing mechanism are respectively positioned between the limiting moving mold and the positioning moving mold, between the adjacent positioning moving molds and between the positioning moving mold and the adjusting mold; all the positioning moving dies are in the unlocking state in the step 3 and can slide along the X direction; one guide inclined plane of each wedge-shaped block is matched with the movable guide plane on the left side, and the other guide inclined plane is matched with the fixed guide plane on the right side; all the wedge-shaped blocks are driven by the rotating shaft synchronously to rotate and swing along the rotating shaft, so that the gap between two adjacent movable dies is changed, and the die distance in the L size is divided equally;

and 7, positioning and locking a movable mold: inflating a lower cavity in the positioning moving die, moving a piston upwards along a piston sliding groove, moving a guide post upwards along a guide post sliding groove until a locking pin positioned at the top of the guide post is locked with a die seat and cannot move in the X direction; then, the mold distance averaging mechanism is reset.