CN117123684A - A concave die, stamping die, stamping device and stamping method - Google Patents

Abstract

The invention relates to the technology of automobile sheet metal part mould design, in particular to a female mould, a stamping device and a stamping method; the die comprises a die holder, an insert, a connecting piece and an insert mounting assembly, wherein the insert mounting assembly is formed by splicing a plurality of insert mounting seats fixedly mounted on the die holder, the plurality of insert mounting seats jointly enclose a cavity of a female die, and the inserts are fixedly mounted in the cavity; two adjacent insert mounting seats are fixedly connected through at least one connecting piece; the connecting piece is used for breaking when the pressure born by the connecting piece exceeds the preset pressure in the stamping process so as to disconnect the two connected insert mounting seats. The compressive ultimate strength of the connecting piece is lower than that of the insert mounting seat, so that the connecting piece is broken firstly when the production is abnormal, and the effect of protecting each insert mounting seat is achieved; by arranging the insert mounting assembly into a split structure, when a certain insert mounting seat is cracked, the insert mounting seat only needs to be repaired.

Description

Female die, stamping device and stamping method

Technical Field

The invention relates to the technology of automobile sheet metal part mold design, in particular to a female mold, a stamping device and a stamping method.

Background

Because of energy saving and consumption reduction demands, automobile lightweight development trend, and high-strength plate cold stamping is used on a large scale as a lightweight effective mode, because high-strength plate strength is high, compared with common materials, larger blanking force is required to ensure forming quality, and the difficulty of high-strength plate part stamping is rebound size adjustment, and in general cases, multiple times of debugging can be carried out through adjusting a stamping die, so that the problems of rebound and cracking of parts are solved, and the consumption time is long.

In the production process, because each insert on the insert mounting plate of the female die of the stamping die is different in stress condition in the process of stamping the high-strength plate, the problem of uneven stress on the insert mounting plate of the female die can be caused generally, when the production is abnormal (such as double-material pressing, foreign matters exist in the stamping die and the like), the pressure born by the insert mounting plate of the female die can be increased abnormally under the action of a large-tonnage press, so that the insert mounting plate of the female die is easy to crack, the existing insert mounting plate of the female die is usually integrally designed by structure, and once the insert mounting plate of the female die is cracked and damaged, a large amount of time and energy are consumed in the repairing and debugging process, and the problems of high repairing cost, large repairing difficulty, long repairing period and incapability of supplying goods and production stop line even caused by long repairing period exist.

Disclosure of Invention

The invention provides the female die, the stamping device and the stamping method, and solves the technical problems that the prior insert mounting plate of the female die is usually integrally designed by structuring, once the insert mounting plate of the female die is cracked and damaged, a great deal of time and energy are required to be consumed in the repairing and adjusting process, the repairing and adjusting process is difficult to restore, the repairing cost is high, the repairing difficulty is high, the repairing period is long, and even the repairing period is long, so that the feeding and the production stop of the line cannot be realized.

The technical scheme adopted by the invention is as follows: the female die comprises a die holder, an insert, a connecting piece and an insert mounting assembly, wherein the insert mounting assembly is formed by splicing a plurality of insert mounting seats fixedly mounted on the die holder, a plurality of insert mounting seats jointly enclose a cavity of the female die, and the inserts are fixedly mounted in the cavity; two adjacent insert mounting seats are fixedly connected through at least one connecting piece; the connecting piece is used for breaking when the pressure born by the connecting piece exceeds the preset pressure in the stamping process so as to disconnect the two connected insert mounting seats.

The preset pressure is larger than the compressive ultimate strength of the connecting piece and smaller than the compressive ultimate strength of the insert mounting seat; the maximum pressure born by the connecting piece in the normal production process is less than the compression ultimate strength of the connecting piece.

The compressive ultimate strength of the connecting piece is lower than that of the insert mounting seat, so that when production is abnormal (such as double pressing materials, foreign matters exist in a stamping die and the like), the connecting piece is broken under the action of a large-tonnage press, and the insert mounting seat is protected; by arranging the insert mounting assembly into a split structure, even if a certain insert mounting seat is cracked, only the cracked insert mounting seat is required to be repaired, compared with the existing structural integrated design of the insert mounting plate, the whole insert mounting plate (namely) is not required to be repaired and debugged, the repair cost and repair difficulty are reduced, and the repair period is shortened; the technical problems that an existing die insert mounting plate is usually designed integrally by means of structuring, once the die insert mounting plate is cracked and damaged, a large amount of time and energy are consumed in the repairing and adjusting process, the die insert mounting plate is difficult to restore, the repairing cost is high, the repairing difficulty is high, the repairing period is long, and even the fact that goods cannot be supplied and production is stopped due to the fact that the repairing period is long are solved.

Further, the connecting piece comprises a double-ended screw rod, and two ends of the double-ended screw rod are respectively connected with one insert mounting seat.

Further, the insert mounting assembly is formed by splicing two insert mounting seats which are symmetrically arranged left and right.

Further, the double-ended screw is disposed in a left-right direction of the insert mounting assembly.

Further, the connecting piece further comprises two nuts; the two ends of the double-end screw rod penetrate out of the outer side faces of the insert mounting seats respectively, the two ends of the double-end screw rod are matched with one nut in a threaded mode respectively, and the two nuts are used for being screwed into the double-end screw rod so as to clamp and fix the two insert mounting seats.

The two ends of the double-end screw rod penetrate through the outer side surface of one insert mounting seat respectively (namely, one end of the double-end screw rod penetrates through the outer side surface of one insert mounting seat, and the other end of the double-end screw rod penetrates through the outer side surface of the other insert mounting seat); the two ends of the double-end screw rod are respectively in threaded fit with one nut, the two nuts are both used for being screwed into the double-end screw rod so as to clamp and fix the two insert mounting seats in a fixing mode, and when the double-end screw rod breaks, two cut-off rods after the double-end screw rod breaks can be respectively pulled out from the outer side faces of the insert mounting seats, so that the problem that the double-end screw rod is difficult to take out from the insert mounting seats after breaking is prevented.

Further, a plurality of the connecting pieces are arranged at intervals along the front-rear direction of the insert mounting assembly.

Further, a breaking groove is formed in the middle of the outer peripheral surface of the double-end screw rod along the circumferential direction, and the breaking groove corresponds to the joint seam position between the two insert mounting seats.

Through setting up broken groove can be realized to the fracture position of double-end screw rod is predetermine, and through making broken groove corresponds with the piece position between the two insert mount pad, can be with the fracture position of double-end screw rod is predetermine two piece department between the insert mount pad, when making the double-end screw rod fracture, can be effectual disconnection two connect between the insert mount pad, and can prevent the double-end screw rod is broken the back is in because of fracture department deformation card is dead in the insert mount pad.

The invention also provides a stamping die which comprises a male die and the female die provided by the invention.

The invention also provides a stamping device which comprises a driving mechanism, a controller, a fracture sensor and the stamping die provided by the invention;

the driving mechanism is electrically connected with the controller, the output end of the driving mechanism is fixedly connected with one structure of a female die and a male die in the stamping die, the driving mechanism is used for driving the male die and the female die to be mutually pressed, each connecting piece of the female die is correspondingly provided with one fracture sensor, and each fracture sensor is electrically connected with the controller; the fracture sensor is used for sending fracture information to the controller when the corresponding connecting piece is broken; the controller is used for controlling the driving mechanism to normally operate and controlling the driving mechanism to stop operating when the fracture information is received.

By arranging the fracture sensor, when the corresponding connecting piece is broken, fracture information is sent to the driving mechanism; when the controller receives the fracture information, the driving mechanism is controlled to stop running; when the connecting piece breaks first, the controller can timely control the driving mechanism to stop running, further stop stamping and prevent the insert mounting seat from cracking due to continuous stamping.

The invention also provides a stamping method, which is realized by using the stamping device provided by the invention, and comprises the following steps:

step 1: placing a plate to be processed between a male die and a female die in a stamping device;

step 2: the male die and the female die are driven to be mutually compressed by the driving mechanism, whether fracture information sent by the fracture sensor is received or not is detected in real time in the compression process by the controller, and if the fracture information is received by the controller, the controller controls the driving mechanism to stop running; if the controller does not receive the fracture information until the male die and the female die are pressed to the preset positions, the step 3 is entered;

step 3: the driving mechanism drives the male die and the female die to be separated from each other, and the round of stamping is completed.

Drawings

Fig. 1 is a schematic perspective view of a female die in an embodiment;

FIG. 2 is a schematic view of an assembled structure of an insert mount and a connector in an embodiment;

FIG. 3 is a schematic structural view of a connector according to an embodiment;

fig. 4 is a schematic perspective view of a stamping die in an embodiment;

wherein: 1-female die and 2-male die;

11-die holder, 12-insert, 13-connecting piece and 14-insert mounting assembly;

131-double-ended screw, 132-nut;

1311—breaking grooves;

141-insert mounting seats, 142-mounting bolts;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention:

as shown in fig. 1, the present embodiment provides a female die 1, which includes a die holder 11, an insert 12, a connecting piece 13 and an insert mounting assembly 14, wherein the insert mounting assembly 14 is formed by splicing a plurality of insert mounting seats 141 fixedly mounted on the die holder 11, the plurality of insert mounting seats 141 jointly enclose a cavity of the female die 1, and the inserts 12 are fixedly mounted in the cavity; two adjacent insert mounting seats 141 are fixedly connected through at least one connecting piece 13; the connecting piece 13 is intended to break during the stamping process when the pressure it is subjected to exceeds a preset pressure, in order to break the connection between the two insert seats 141 it connects.

Wherein, the preset pressure is larger than the compression ultimate strength of the connecting piece 13 and smaller than the compression ultimate strength of the insert mounting seat 141; the maximum pressure to which the connector 13 is subjected during normal production is less than the compression ultimate strength of the connector 13.

As shown in fig. 1, each insert mounting seat 141 is fixedly mounted on the die holder 11 by a mounting bolt 142

By making the compressive ultimate strength of the connecting piece 13 lower than that of the insert mounting seat 141, when the production is abnormal (such as pressing double materials, foreign matters exist in a stamping die and the like), the connecting piece 13 is broken under the action of a large-tonnage press, so that the effect of protecting each insert mounting seat 141 is achieved; by arranging the insert mounting assembly 14 into a split structure, even if a certain insert mounting seat 141 is cracked, only the cracked insert mounting seat 141 needs to be repaired, compared with the existing structural integrated design of the insert 12 mounting plate, the whole insert 12 mounting plate (namely) does not need to be repaired and debugged, the repair cost and repair difficulty are reduced, and the repair period is shortened; the technical problems that the prior insert 12 mounting plate of the female die 1 is usually designed integrally by using a structure, once the insert 12 mounting plate of the female die 1 is cracked and damaged, a great amount of time and energy are consumed in the repairing and adjusting process, the repairing process is difficult to restore, the repairing cost is high, the repairing difficulty is high, the repairing period is long, and even the repairing period is long, so that the material supply and the production stop line cannot be realized are solved.

As shown in fig. 2 and 3, the connecting member 13 includes a double-ended screw 131, and two ends of the double-ended screw 131 are respectively connected to one insert mounting seat 141.

In the present embodiment, as shown in fig. 1 and 2, the insert mounting assembly 14 is formed by splicing two insert mounting seats 141 arranged symmetrically left and right.

In the present embodiment, as shown in fig. 1 to 3, the double-ended screw 131 is disposed in the left-right direction of the insert mounting assembly 14.

In this embodiment, as shown in fig. 1 and 3, the connecting member 13 further includes two nuts 132; two ends of the double-end screw rod 131 penetrate out of the outer side face of one insert mounting seat 141 respectively, two ends of the double-end screw rod 131 are matched with a nut 132 in a threaded mode respectively, and the two nuts 132 are used for screwing the double-end screw rod 131 to clamp and fix the two insert mounting seats 141.

By making both ends of the double-ended screw 131 pass through the outer side surface of one insert mounting seat 141, respectively (i.e., one end of the double-ended screw 131 passes through the outer side surface of one insert mounting seat 141, and the other end of the double-ended screw 131 passes through the outer side surface of the other insert mounting seat 141); two ends of the double-end screw rod 131 are respectively in threaded fit with a nut 132, and the two nuts 132 are used for screwing in the double-end screw rod 131 so as to clamp and fix the fixing mode of the two insert mounting seats 141, namely, when the double-end screw rod 131 breaks, two rod bodies after the double-end screw rod 131 breaks are respectively pulled out from the outer side surfaces of the two insert mounting seats 141, and the problem that the double-end screw rod 131 is difficult to take out from the insert mounting seats 141 after breaking is prevented.

In the present embodiment, as shown in fig. 1 and 3, a plurality of the connecting pieces 13 are provided at intervals in the front-rear direction of the insert mounting assembly 14; specifically, in the present embodiment, the number of the connecting pieces 13 is three, and the three connecting pieces 13 are arranged at intervals in the front-rear direction of the insert mounting assembly 14.

Further, as shown in fig. 3, a breaking groove 1311 is formed in the middle of the outer peripheral surface of the double-ended screw 131 in the circumferential direction, and the breaking groove 1311 corresponds to the joint between the two insert mounting seats 141.

Through setting up broken groove 1311, can realize the fracture position to double-end screw 131 predetermine, and through making the piece position correspondence between broken groove 1311 and two insert mount pad 141, can predetermine the fracture position of double-end screw 131 in the piece department between two insert mount pad 141, when making double-end screw 131 fracture, can effectually break the connection between two insert mount pad 141 to can prevent that double-end screw 131 from being blocked in insert mount pad 141 because of fracture department deformation after fracture.

Further, as shown in fig. 4, the present embodiment further provides a stamping die, which includes a male die 2 and a female die 1 provided by the present invention.

Further, the embodiment also provides a stamping device, which comprises a driving mechanism, a controller, a fracture sensor and the stamping die provided by the invention;

the driving mechanism is electrically connected with the controller, the output end of the driving mechanism is fixedly connected with one structure of the female die 1 and the male die 2 in the stamping die, the driving mechanism is used for driving the male die 2 and the female die 1 to mutually compress, each connecting piece 13 of the female die 1 is correspondingly provided with a fracture sensor, and each fracture sensor is electrically connected with the controller; the fracture sensor is used for sending fracture information to the controller when the corresponding connecting piece 13 is broken; the controller is used for controlling the driving mechanism to normally operate and controlling the driving mechanism to stop operating when the fracture information is received.

Specifically, the driving mechanism drives the male die 2 and the female die 1 to compress each other in various ways, including but not limited to:

mode one: the male die 2 is arranged on the upper side of the female die 1, the output end of the driving mechanism is fixedly connected with the male die 2, and the driving mechanism drives the male die 2 to press down so that the male die 2 and the female die 1 are mutually pressed.

Mode two: the female die 1 is arranged on the upper side of the male die 2, the output end of the driving mechanism is fixedly connected with the female die 1, and the driving mechanism drives the female die 1 to press down so that the male die 2 and the female die 1 are mutually pressed.

By arranging the fracture sensor, when the corresponding connecting piece 13 is broken, fracture information is sent to the driving mechanism; when the controller receives the fracture information, the driving mechanism is controlled to stop running; when the production is abnormal (such as pressing double materials, foreign matters exist in the stamping die, etc.), the controller can timely control the driving mechanism to stop running when the connecting piece 13 breaks, and then the stamping is stopped, so that the insert mounting seat 141 is prevented from cracking due to continuous stamping.

Further, the present embodiment also provides a stamping method, which is implemented by using the stamping device provided in the present embodiment, and the method includes the following steps:

step 1: placing a plate to be processed between a male die 2 and a female die 1 in a stamping device;

step 2: the male die 2 and the female die 1 are driven to be mutually compressed by the driving mechanism, whether fracture information sent by the fracture sensor is received or not is detected in real time in the compression process by the controller, and if the fracture information is received by the controller, the driving mechanism is controlled by the controller to stop running; if the controller still does not receive the fracture information until the male die 2 and the female die 1 are pressed to the preset positions, the step 3 is entered;

step 3: the driving mechanism drives the male die 2 and the female die 1 to be separated from each other, and the round of stamping is completed.

The female die, the stamping device and the stamping method provided by the invention have at least the following technical effects or advantages:

1. by making the compressive ultimate strength of the connecting piece 13 lower than that of the insert mounting seat 141, when the production is abnormal (such as pressing double materials, foreign matters exist in a stamping die and the like), the connecting piece 13 is broken under the action of a large-tonnage press, so that the effect of protecting each insert mounting seat 141 is achieved; by arranging the insert mounting assembly 14 into a split structure, even if a certain insert mounting seat 141 is cracked, only the cracked insert mounting seat 141 needs to be repaired, compared with the existing structural integrated design of the insert 12 mounting plate, the whole insert 12 mounting plate (namely) does not need to be repaired and debugged, the repair cost and repair difficulty are reduced, and the repair period is shortened; the technical problems that the prior insert 12 mounting plate of the female die 1 is usually designed integrally by using a structure, once the insert 12 mounting plate of the female die 1 is cracked and damaged, a great amount of time and energy are consumed in the repairing and adjusting process, the repairing process is difficult to restore, the repairing cost is high, the repairing difficulty is high, the repairing period is long, and even the repairing period is long, so that the material supply and the production stop line cannot be realized are solved.

2. By making both ends of the double-ended screw 131 pass through the outer side surface of one insert mounting seat 141, respectively (i.e., one end of the double-ended screw 131 passes through the outer side surface of one insert mounting seat 141, and the other end of the double-ended screw 131 passes through the outer side surface of the other insert mounting seat 141); two ends of the double-end screw rod 131 are respectively in threaded fit with a nut 132, and the two nuts 132 are used for screwing in the double-end screw rod 131 so as to clamp and fix the fixing mode of the two insert mounting seats 141, namely, when the double-end screw rod 131 breaks, two rod bodies after the double-end screw rod 131 breaks are respectively pulled out from the outer side surfaces of the two insert mounting seats 141, and the problem that the double-end screw rod 131 is difficult to take out from the insert mounting seats 141 after breaking is prevented.

3. Through setting up broken groove 1311, can realize the fracture position to double-end screw 131 predetermine, and through making the piece position correspondence between broken groove 1311 and two insert mount pad 141, can predetermine the fracture position of double-end screw 131 in the piece department between two insert mount pad 141, when making double-end screw 131 fracture, can effectually break the connection between two insert mount pad 141 to can prevent that double-end screw 131 from being blocked in insert mount pad 141 because of fracture department deformation after fracture.

4. By arranging the fracture sensor, when the corresponding connecting piece 13 is broken, fracture information is sent to the driving mechanism; when the controller receives the fracture information, the driving mechanism is controlled to stop running; when the production is abnormal (such as pressing double materials, foreign matters exist in the stamping die, etc.), the controller can timely control the driving mechanism to stop running when the connecting piece 13 breaks, and then the stamping is stopped, so that the insert mounting seat 141 is prevented from cracking due to continuous stamping.

It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is capable of modification, variation, addition or substitution by those skilled in the art within the spirit and scope of the invention.

Claims (10)

1. A female die, characterized in that: the die comprises a die holder, an insert, a connecting piece and an insert mounting assembly, wherein the insert mounting assembly is formed by splicing a plurality of insert mounting seats fixedly mounted on the die holder, a plurality of insert mounting seats jointly enclose a cavity of a female die, and the inserts are fixedly mounted in the cavity; two adjacent insert mounting seats are fixedly connected through at least one connecting piece; the connecting piece is used for breaking when the pressure born by the connecting piece exceeds the preset pressure in the stamping process so as to disconnect the two connected insert mounting seats.

2. The die of claim 1, wherein: the connecting piece comprises a double-head screw rod, and two ends of the double-head screw rod are respectively connected with one insert mounting seat.

3. The die of claim 2, wherein: the insert mounting assembly is formed by splicing two insert mounting seats which are symmetrically arranged left and right.

4. A die as claimed in claim 3, wherein: the double-headed screw is arranged in the left-right direction of the insert mounting assembly.

5. The die set forth in claim 4, wherein: the connecting piece further comprises two nuts; the two ends of the double-end screw rod penetrate out of the outer side faces of the insert mounting seats respectively, the two ends of the double-end screw rod are matched with one nut in a threaded mode respectively, and the two nuts are used for being screwed into the double-end screw rod so as to clamp and fix the two insert mounting seats.

6. The die set forth in claim 4, wherein: the plurality of connecting pieces are arranged at intervals along the front-back direction of the insert mounting assembly.

7. The die set forth in claim 4, wherein: the middle part of the outer peripheral surface of the double-end screw rod is provided with a breaking groove along the circumferential direction, and the breaking groove corresponds to the joint seam position between the two insert mounting seats.

8. A stamping die, characterized in that: comprising a male die and a female die as claimed in any one of claims 1 to 7.

9. A stamping device, characterized in that: comprising a drive mechanism, a controller, a fracture sensor and the stamping die of claim 8;

the driving mechanism is electrically connected with the controller, the output end of the driving mechanism is fixedly connected with one structure of a female die and a male die in the stamping die, the driving mechanism is used for driving the male die and the female die to be mutually pressed, each connecting piece of the female die is correspondingly provided with one fracture sensor, and each fracture sensor is electrically connected with the controller; the fracture sensor is used for sending fracture information to the controller when the corresponding connecting piece is broken; the controller is used for controlling the driving mechanism to normally operate and controlling the driving mechanism to stop operating when the fracture information is received.

10. A stamping method, characterized in that it is carried out with a stamping device according to claim 9, said method comprising the steps of:

step 1: placing a plate to be processed between a male die and a female die in a stamping device;

step 2: the male die and the female die are driven to be mutually compressed by the driving mechanism, whether fracture information sent by the fracture sensor is received or not is detected in real time in the compression process by the controller, and if the fracture information is received by the controller, the controller controls the driving mechanism to stop running; if the controller does not receive the fracture information until the male die and the female die are pressed to the preset positions, the step 3 is entered;

step 3: the driving mechanism drives the male die and the female die to be separated from each other, and the round of stamping is completed.