CN113828686A - High-strength steel roll forming online multi-punching flexible punching equipment and use method thereof - Google Patents

Abstract

The invention discloses an on-line multi-stroke flexible punch die stamping device for high-strength steel roll forming, which comprises a bottom plate and a plurality of flexible punch dies sequentially arranged along one side or two sides of the feeding direction of a rolled part, wherein the bottom plate is suitable for being arranged on a frame of a punch press, each flexible punch die comprises a punch, a sliding block, a pull rod and a cylinder, the cylinder is fixed on the bottom plate, the bottom plate is provided with a guide groove and a punch guide hole, the sliding block and the pull rod can be slidably accommodated in the guide groove, the piston rod of cylinder is connected to the one end of pull rod, but the other end sliding contact of slider and pull rod, and the other end of pull rod is the wedge shape, and the slider has the wedge groove with the other end matched with of pull rod, and the one end of drift is connected to the slider, and the other end of drift can stretch out or retract in the drift guiding hole, and when the piston rod of cylinder extended, the pull rod was configured to promote the slider and drives the drift and push down. The invention reduces the special requirements of rolling equipment on the punch press, and obviously reduces the manufacturing cost of parts and the cost of dies.

Description

High-strength steel roll forming online multi-punching flexible punching equipment and use method thereof

Technical Field

The invention relates to the technical field of roll forming online punching, in particular to a high-strength steel roll forming online multi-stroke flexible punch die device, punching equipment and a using method thereof.

Background

At present, a large-table-board punch press is adopted for punching and forming long parts (1.5-3 meters) in rolled products, but no proper processing means is provided for the ultra-long parts (more than 3 meters), and the parts are more in demand on heavy truck automobiles and photovoltaic supports.

For the rolled parts with the thickness of more than 3 meters, a plurality of punching machines are integrated on a rolling line, so that the configuration requirement on the rolling equipment is improved, the equipment cost is increased, the mould cost is greatly increased, and the manufacturing cost of the parts is greatly increased.

Therefore, those skilled in the art are dedicated to develop an on-line multi-pass flexible punch and die device and punching equipment for high-strength steel roll forming and a using method thereof, so as to meet the requirement of manufacturers on processing of overlong pieces.

Disclosure of Invention

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to reduce the requirement for arranging a pressing device, the manufacturing cost of parts and the cost of a mold in response to the punching requirement of an ultra-long part.

In order to achieve the above object, the present invention provides an on-line multi-pass flexible punch and die device for high strength steel roll forming, comprising a base plate and a plurality of flexible punch and die units sequentially arranged along one side or both sides of a roll-formed part in a feeding direction, wherein the base plate is adapted to be mounted on a frame of a punch press, each flexible punch and die unit comprises a punch, a slider, a pull rod, and a cylinder, the cylinder is fixed on the base plate, the base plate has a guide slot and a punch guide hole, the slider and the pull rod are slidably received in the guide slot, a piston rod of the cylinder is connected to one end of the pull rod, the slider and the other end of the pull rod are slidably contacted, the other end of the pull rod is in a wedge shape, the slider has a wedge-shaped slot matched with the other end of the pull rod, one end of the punch is connected to the slider, and the other end of the punch can extend out or retract in the punch guide hole, when a piston rod of the air cylinder extends, the pull rod is configured to push the sliding block to drive the punch to press down.

Further, the feeding device also comprises a feeding guide wheel, and the feeding guide wheel is arranged below the bottom plate along the feeding direction.

Further, a stroke sensor is included, the stroke sensor being configured to monitor whether the rolled part is in place.

Further, the punches of at least one of the plurality of flexible punch dies are plural, arranged in line or in an array along the feed direction.

Further, the wedge-shaped groove of the slider is arranged in the middle of the slider in the feeding direction.

The invention also provides high-strength steel roll forming online multi-punching-frequency flexible punching equipment which comprises a bottom plate, a plurality of flexible punch stamping dies, a punch press and a servo feeder, wherein the flexible punch stamping dies, the punch press and the servo feeder are sequentially arranged on one side or two sides of a roll-in part in the feeding direction, the bottom plate is fixedly arranged on a rack of the punch press, the servo feeder is configured to accurately convey the roll-in part to the position of the flexible punch stamping dies, each flexible punch stamping die comprises a punch, a sliding block, a pull rod and an air cylinder, the air cylinder is fixed on the bottom plate, the bottom plate is provided with a guide groove and a punch guide hole, the sliding block and the pull rod are slidably accommodated in the guide groove, a piston rod of the air cylinder is connected to one end of the pull rod, the sliding block is in slidable contact with the other end of the pull rod, the other end of the pull rod is in a wedge shape, and the sliding block is provided with a wedge-shaped groove matched with the other end of the pull rod, one end of the punch is connected to the sliding block, the other end of the punch can extend out or retract in the punch guide hole, and when a piston rod of the air cylinder extends, the pull rod is configured to push the sliding block to drive the punch to press downwards.

Further, the feeding device also comprises a feeding guide wheel, and the feeding guide wheel is arranged below the bottom plate along the feeding direction.

Further, a stroke sensor is included, the stroke sensor being configured to monitor whether the rolled part is in place.

Further, the punches of at least one of the plurality of flexible punch dies are plural, arranged in line or in an array along the feed direction.

The invention also provides a use method of the high-strength steel roll forming online multi-stroke flexible punching equipment, which comprises the following steps of:

step 1, decomposing all holes on a rolled part into a plurality of punching times;

step 2, the rolled part is conveyed to a flexible punch punching die position corresponding to the first punching time punching through the servo feeder according to the required step pitch, a piston rod of the air cylinder extends out, the pull rod pushes the sliding block, and the sliding block drives the punch to press downwards to punch the first punching time;

step 3, after the punch finishes the punching of the first punching time, the piston rod of the air cylinder retracts, the pull rod is pulled back, and the sliding block and the punch are pushed to return to the initial state;

and 4, sequentially conveying the rolled parts to the punching positions of the flexible punches corresponding to the punching of each subsequent punching step through the servo feeder according to the required step pitch, extending out the piston rod of the air cylinder, pushing the sliding block by the pull rod, driving the punches to be pressed downwards by the sliding block, and punching of each subsequent punching step until the punching of all punching steps is completed.

The invention has the beneficial effects that:

aiming at the punching requirement of the ultra-long part, the punching requirement of the ultra-long part in the rolled product is met through the conventional punch and the multi-punching flexible stamping die, the special requirement of rolling equipment on the punch is reduced, and the manufacturing cost of the part and the cost of the die are obviously reduced.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a top view of a high strength steel roll forming in-line multi-pass flexible punch and die set according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a flexible punch die in an initial state in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic view of the punching state of the flexible punch die of a preferred embodiment of the present invention;

FIG. 4 is a schematic view of a stamped workpiece of photovoltaic mount components according to another preferred embodiment of the invention;

fig. 5a to 5f are schematic views illustrating a punching process of a photovoltaic bracket component according to another preferred embodiment of the invention.

The device comprises a base plate 1, a flexible punch die 2, a feeding guide wheel 3, a stroke sensor 4, a punch 21, a sliding block 22, a pull rod 23, an air cylinder 24 and a piston rod 25.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

The invention aims to overcome the defects of the prior art, the punching requirement of an ultra-long piece can be met, the length direction (feeding direction) is accurately transmitted through a servo feeder, then a bolt mechanism is pushed through an air cylinder to punch a punch to be punched, the feeding and punching are controlled through a program to meet the punching requirement of a part, and a pair of punching dies can be shared for series products (with the same hole and different hole positions), so that the manufacturing cost and the debugging cost of a die can be saved.

Example 1

As shown in fig. 1, 2 and 3, the present embodiment provides an on-line multi-pass flexible punch and die device for high strength steel rolling forming, which includes a base plate 1, a plurality of flexible punch and die 2 sequentially arranged along both sides of a feeding direction X of a rolled part (in some examples, also along one side of the feeding direction X of the rolled part), the base plate 1 is adapted to be mounted on a frame of a punching machine, each flexible punch and die 2 includes a punch 21, a slider 22, a pull rod 23, a spring, and a cylinder 24, the base plate 1 has a guide slot and a punch guide hole, the slider 22 and the pull rod 23 are slidably received in the guide slot, the punch 21 is extendable or retractable in the punch guide hole, the punch 21 is connected to the slider 22 by a screw, and the punch 21 is easily removed and replaced. The spring encircles drift 21 and sets up, the one end of spring is supported and is leaned on slider 22, the other end of spring supports and leans on the opening inner wall of drift guiding hole, cylinder 24 fixes on the bottom plate, piston rod 25 of cylinder 24 is connected to the one end of pull rod 23, the other end sliding contact of slider 22 and pull rod 23, the other end of pull rod 23 is wedge shape, slider 22 has the other end matched with wedge groove with pull rod 23, when piston rod 25 of cylinder 24 extension, pull rod 23 promotes slider 22 and drives drift 21 and push down.

In some examples, the feeding guide wheel 3 is further included, and the feeding guide wheel 3 is arranged below the bottom plate 1 along the feeding direction X.

In some examples, a stroke sensor 4 is also included, the stroke sensor 4 being used to monitor whether the rolled part is in place.

In the present embodiment, the number of the punches of the flexible punch dies 2 is plural, some of the flexible punch dies 2 are arranged in line in the feeding direction X, and the other flexible punch dies 2 are arranged in an array.

Preferably, the wedge-shaped groove of the slider 22 is provided in the middle of the slider 22 in the feeding direction X.

Example 2

The embodiment provides an online multi-punching-time flexible punching device for high-strength steel roll forming, the online multi-punching-time flexible punch die device and a 160 t punch press with a servo feeder in the embodiment 1 are adopted, the punching work of an ultra-long part (more than 3 meters) can be completed by 1 160 t punch press, a plurality of 160 t punch presses do not need to be connected in series on a roll line, a plurality of punching dies do not need to be used for completing the punching work, the equipment cost and the die cost are reduced by times, the manufacturing cost is obviously reduced, and thus, the manufactured product is more competitive.

Example 3

The embodiment provides a use method of the high-strength steel roll forming online multi-pass flexible punching equipment in embodiment 2, and the use method comprises the following steps:

step 1, decomposing all holes on a rolled part into a plurality of punching times;

step 2, the rolled part is conveyed to a flexible punch punching die position corresponding to the first punching time punching through the servo feeder according to the required step pitch, a piston rod of the air cylinder extends out, the pull rod pushes the sliding block, the sliding block compresses the spring and drives the punch to press downwards, and punching of the first punching time is carried out;

step 3, after the punch finishes the punching of the first punching time, the piston rod of the air cylinder returns, the pull rod is pulled back, the spring extends back, and the sliding block and the punch are pushed to return to the initial position;

and 4, sequentially conveying the rolled parts to the punching positions of the flexible punches corresponding to the punching of each subsequent punching step through the servo feeder according to the required step pitch, extending out the piston rod of the air cylinder, pushing the sliding block by the pull rod, compressing the spring by the sliding block and driving the punches to press downwards, and punching each subsequent punching step until the punching of all the punching steps is finished.

As shown in fig. 4 and fig. 5a to 5f, the present embodiment takes the punching process of a photovoltaic support component as an example, and describes a method for using the high-strength steel roll forming online multi-pass flexible punching apparatus.

Fig. 4 shows a stamped workpiece schematic of a photovoltaic support part of the present example.

Fig. 5a to 5f show schematic views of the punching process of the photovoltaic support part of the present example.

The example is realized by the following technical scheme:

1) all holes on the punched workpiece (engineering material sheet) shown in fig. 4 are decomposed into six punching times to complete punching.

2) The servo feeder sends the rolled part material sheet to be punched to the position corresponding to the punch head according to the requirement, the information is sent to start the air cylinder to work, the air cylinder pushes the sliding block and the punch head through the pull rod, the punch head is enabled to be in a working state (as shown in figure 3), and the punch head punches the hole.

3) After the punch punches, the air cylinder retracts, and the punch is in an inactive state (shown in fig. 2).

4) The servo feeder feeds materials again, and the punching work of the next punching is carried out.

The specific implementation steps are as follows:

1) the rolled parts are fed by a servo feeder according to a specified step pitch along a feeding direction X, a theoretical value of a punching position in the width direction (Y direction) needs to be calculated by rolling software, and then the position of each punch in the die in the Y direction is adjusted through testing and theoretical deviation after roll forming, and the die is manufactured.

2) The advance stroke position of the air cylinder needs to be determined when the punching die is debugged, and the working correctness of the punching head is ensured.

3) After the punch position and the cylinder stroke are completed, the punching program can be debugged online.

4) As shown in fig. 5a, a servo feeder feeds a material sheet into a punching die according to a required step pitch, the punching die monitors that the material is in place through a stroke sensor, information is sent to a corresponding air cylinder, an air cylinder pull rod pushes a sliding block and a punching head, and the punching die starts punching. After the punch finishes punching, the cylinder retracts, the cylinder pushes the pull rod back, and the punch is in a non-working state; and the corresponding air cylinder of the punch which does not need to punch does not work.

5) As shown in fig. 5b, after the die finishes the first punching operation, the die sends information to the servo feeder to perform feeding for the second punching operation, and then the punching operation for the second punching operation is performed, wherein the operation contents are the same as the above operation contents;

6) as shown in fig. 5c to 5f, the punching work of the third to sixth punching times is completed, and the punching work of the part is completed by decomposing into six punching times.

The invention has the beneficial effects that:

aiming at the punching requirement of the ultra-long part, the punching requirement of the ultra-long part in the rolled product is met through the conventional punch and the multi-punching flexible stamping die, the special requirement of rolling equipment on the punch is reduced, and the manufacturing cost of the part and the cost of the die are obviously reduced.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The device is characterized by comprising a bottom plate and a plurality of flexible punch dies which are sequentially arranged along one side or two sides of the feeding direction of a rolled part, wherein the bottom plate is suitable for being installed on a rack of a punch press, each flexible punch die comprises a punch, a sliding block, a pull rod and an air cylinder, the air cylinder is fixed on the bottom plate, the bottom plate is provided with a guide groove and a punch guide hole, the sliding block and the pull rod are slidably accommodated in the guide groove, a piston rod of the air cylinder is connected to one end of the pull rod, the sliding block is in slidable contact with the other end of the pull rod, the other end of the pull rod is in a wedge shape, the sliding block is provided with a wedge-shaped groove matched with the other end of the pull rod, one end of the punch is connected to the sliding block, and the other end of the punch can extend out or retract in the punch guide hole, when a piston rod of the air cylinder extends, the pull rod is configured to push the sliding block to drive the punch to press down.

2. An on-line multi-stroke flexible punch and die device for roll forming of high strength steel as claimed in claim 1, further comprising a feed guide wheel disposed along the feed direction below the bottom plate.

3. The high strength steel roll forming in-line multi-pass flexible punch and die apparatus according to claim 1, further comprising a stroke sensor configured to monitor whether the rolled part is in place.

4. The high strength steel roll forming in-line multi-pass flexible punch and die set as claimed in claim 1, wherein the number of the punches of at least one of the plurality of flexible punch and die is plural, arranged in line or in an array along the feeding direction.

5. The high strength steel roll forming in-line multi-pass flexible punch and die apparatus according to claim 4, wherein the wedge groove of the slide block is disposed at a middle portion of the slide block in the feeding direction.

6. The high-strength steel roll forming online multi-punching-frequency flexible punching equipment is characterized by comprising a bottom plate, a plurality of flexible punch stamping dies, a punch press and a servo feeder, wherein the flexible punch stamping dies, the punch press and the servo feeder are sequentially arranged along one side or two sides of a feeding direction of a rolled part, the bottom plate is fixedly arranged on a rack of the punch press, the servo feeder is configured to accurately convey the rolled part to the position of the flexible punch stamping dies, each flexible punch stamping die comprises a punch, a sliding block, a pull rod and an air cylinder, the air cylinder is fixed on the bottom plate, the bottom plate is provided with a guide groove and a punch guide hole, the sliding block and the pull rod are slidably accommodated in the guide groove, a piston rod of the air cylinder is connected to one end of the pull rod, the sliding block is in slidable contact with the other end of the pull rod, the other end of the pull rod is in a wedge shape, and the sliding block is provided with a wedge-shaped groove matched with the other end of the pull rod, one end of the punch is connected to the sliding block, the other end of the punch can extend out or retract in the punch guide hole, and when a piston rod of the air cylinder extends, the pull rod is configured to push the sliding block to drive the punch to press downwards.

7. The high-strength steel roll forming online multi-pass flexible punching device according to claim 6, further comprising a feeding guide wheel arranged along the feeding direction below the bottom plate.

8. The in-line multi-pass flexible punching apparatus for high strength steel roll forming according to claim 6, further comprising a stroke sensor configured to monitor whether the rolled part is in place.

9. The high strength steel roll forming in-line multi-pass flexible punch apparatus of claim 6, wherein the number of the punches of at least one of the plurality of flexible punch dies is plural, arranged in line or in an array along the feeding direction.

10. The use method of the high-strength steel roll forming online multi-stroke flexible punching equipment as claimed in claim 6, characterized by comprising the following steps:

step 1, decomposing all holes on a rolled part into a plurality of punching times;

step 2, the rolled part is conveyed to a flexible punch punching die position corresponding to the first punching time punching through the servo feeder according to the required step pitch, a piston rod of the air cylinder extends out, the pull rod pushes the sliding block, and the sliding block drives the punch to press downwards to punch the first punching time;

step 3, after the punch finishes the punching of the first punching time, the piston rod of the air cylinder retracts, the pull rod is pulled back, and the sliding block and the punch are pushed to return to the initial state;

and 4, sequentially conveying the rolled parts to the punching positions of the flexible punches corresponding to the punching of each subsequent punching step through the servo feeder according to the required step pitch, extending out the piston rod of the air cylinder, pushing the sliding block by the pull rod, driving the punches to be pressed downwards by the sliding block, and punching of each subsequent punching step until the punching of all punching steps is completed.

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