CN214442065U

CN214442065U - Precision bending die with adjustable punch

Info

Publication number: CN214442065U
Application number: CN202023293180.7U
Authority: CN
Inventors: 刘衡
Original assignee: Kaiping Chengruifeng Technology Co ltd
Current assignee: Kaiping Chengruifeng Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-22
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a precise bending die with an adjustable punch, wherein an upper clamping plate is provided with a punch structure, and the punch structure comprises an adjusting long rod and a bending punch; the upper clamping plate is provided with a punch hole, a bending punch is inserted in the punch hole, the bending punch is fixed to the upper clamping plate through a limiting mechanism, and a first elastic piece used for pushing the bending punch upwards is arranged in the limiting mechanism; the upper clamping plate is provided with a long rod chute penetrating through the first side surface of the upper clamping plate; an adjusting long rod is inserted in the long rod sliding groove, the first end of the adjusting long rod protrudes out of the first side face of the upper clamping plate, and the second end of the adjusting long rod extends to the position above the top of the bending punch; the lower surface of the second end of the long adjusting rod is an adjusting inclined surface inclined along the length direction of the long adjusting rod; the first end of the long adjusting rod is provided with an adjusting mechanism for adjusting the insertion depth of the long adjusting rod; and a bending placing table is arranged on the lower template corresponding to the bending punch. The utility model discloses realize fast, debug the drift punching press angle of bending the plate accurately.

Description

Precision bending die with adjustable punch

Technical Field

The utility model belongs to the technical field of the mould and specifically relates to a precision mould of bending with adjustable drift is related to.

Background

In the metal part processing industry, the metal part is often required to be bent and formed. One of the important determinants of the magnitude of the bend angle of the metal part is the bending punch. The bending punch in the prior art is generally fixed and cannot be adjusted freely. When the bending angle does not meet the production requirement, the bending punch is required to be debugged, the die can be disassembled, the bending punch is repaired and debugged again, a large amount of manpower and time are wasted, and the production process is seriously influenced. Therefore, there is a need to improve the existing bending die, which can directly debug the bending punch on the die without disassembling the whole die, simplify the step of debugging the die, and improve the production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a precision mould of bending with adjustable drift, simplify the step of debugging the drift of bending, realize debugging the drift punching press angle of bending the plate fast, accurately.

The technical solution of the utility model is that:

a precise bending die with an adjustable punch, which comprises an upper die and a lower die,

the upper die comprises an upper die base, an upper base plate and an upper clamping plate which are sequentially arranged from top to bottom; the upper clamping plate is provided with a punch head structure, and the punch head structure comprises an adjusting long rod and a bending punch head; the upper clamping plate is provided with a punch hole extending vertically downwards, the bending punch is inserted into the punch hole and fixed to the upper clamping plate through a limiting mechanism, and a first elastic piece used for pushing the bending punch upwards is arranged in the limiting mechanism; the upper clamping plate is provided with the long rod sliding groove which penetrates through the first side surface of the upper clamping plate; the adjusting long rod is inserted in the long rod sliding groove, the first end of the adjusting long rod protrudes out of the first side face of the upper clamping plate, the second end of the adjusting long rod extends to the upper part of the top of the bending punch, and the top of the bending punch abuts against the lower surface of the second end of the adjusting long rod; the lower surface of the second end of the long adjusting rod is an adjusting inclined surface inclined along the length direction of the long adjusting rod; the length of the adjusting long rod and the depth of the long rod sliding groove are greater than the maximum distance between the side surface of the bending punch and the first side surface of the upper clamping plate; the adjusting long rod can slide in the long rod sliding groove; the first end of the long adjusting rod is provided with an adjusting mechanism for adjusting the insertion depth of the long adjusting rod;

the lower die comprises a lower die seat, a lower clamping plate and a lower die plate which are sequentially arranged from bottom to top, a bending placing table is arranged on the lower die plate at a position corresponding to the bending punch and used for placing a plate to be bent, a bending edge and a punch abdicating groove at one side of the bending edge are formed in the bending placing table, the bending punch downwards punches the plate to be bent, and the plate to be bent forms a bending structure along the bending edge; and a positioning mechanism for fixing the plate to be bent is arranged at the periphery of the bending placing table.

The precision bending die with the adjustable punch comprises an upper clamping plate, a lower clamping plate and a limiting mechanism, wherein the upper clamping plate is provided with a limiting groove; the first elastic piece is arranged between the bottom of the limiting lug and the bottom of the limiting groove.

The precision bending die with the adjustable punch comprises an upper clamping plate, a limiting groove, a limiting fixing block and a first elastic piece, wherein the limiting groove penetrates through the bottom surface of the upper clamping plate, the limiting fixing block is arranged on the bottom surface of the upper clamping plate at the position of the limiting groove and used for blocking the bottom of the limiting groove, and two ends of the first elastic piece respectively abut against the limiting convex block and the top surface of the limiting fixing block.

The precision bending die with the adjustable punch pin is characterized in that the limiting lug is provided with an elastic piece mounting groove with a downward opening for accommodating the first elastic piece.

The precision bending die with the adjustable punch comprises a fixed seat, a locking bolt and an adjusting screw rod, wherein the fixed seat is fixedly connected with the adjustable punch rod; the fixed seat is of an L-shaped structure, the first end of the fixed seat is fixed on the side surface of the upper backing plate, and the second end of the fixed seat is arranged right opposite to the outer side of the first end of the adjusting long rod; a bolt through hole and a screw rod through hole which penetrate through the inner side surface and the outer side surface of the fixing seat are formed in the position, corresponding to the long adjusting rod, of the second end of the fixing seat; the locking bolt is inserted in the bolt through hole, the bolt through hole and the locking bolt are fixed in a threaded fit mode, and the tail end of the locking bolt abuts against the first end of the long adjusting rod; the adjusting screw rod is inserted in the screw rod through hole, the first end of the adjusting screw rod is fixedly connected with the first end of the adjusting long rod, and the second end of the adjusting screw rod protrudes out of the outer side face of the fixed seat; the second end of adjusting screw is equipped with the pole head, the pole head with be equipped with the second elastic component between the lateral surface of fixing base, the second elastic component cover is located on the adjusting screw.

The precision bending die with the adjustable punch comprises a bending punch, wherein a side pressure head is arranged on the side surface of the bending punch, which is far away from the bending edge, and the bottom of the side pressure head is a first inclined surface; a bending slider groove is formed in the punch head abdicating groove at a position corresponding to the side pressure head, a bending slider is placed on the bending slider groove, and a second inclined surface correspondingly matched with the first inclined surface of the side pressure head is arranged at the top of the bending slider; after the bending punch is pressed downwards, the bending sliding block can slide towards the bending edge direction along the bending sliding block groove, and the side face of the bending sliding block extrudes the bending part of the plate to be bent to form a bending structure larger than 90 degrees.

The precision bending die with the adjustable punch comprises a bending slide block, wherein a third elastic piece is arranged between the outer side end of the bending slide block and the inner side wall of the bending placing table.

The precision bending die with the adjustable punch comprises a positioning block, wherein the positioning block is arranged on the periphery of the bending placing table, a limit stop extending outwards is arranged at the top of the positioning block, and the limit stop protrudes above the periphery of the plane part of the plate to be bent.

The precision bending die with the adjustable punch pin comprises a first elastic piece, a second elastic piece and a third elastic piece, wherein the first elastic piece, the second elastic piece and the third elastic piece are springs.

From the above description, the present invention can achieve the following effects in comparison with the prior art:

the utility model discloses an accurate mould of bending with adjustable drift, the top through the drift of bending sets up a gliding regulation stock, adjusts the depth of insertion of adjusting the stock, make the top of the drift of bending of the regulation inclined plane extrusion of the slope of regulation stock, thereby change the punching press length of the drift of bending, with the punching press demand of the angle of bending that reaches the plate, solved original book angle and not reach the settlement demand, need dismantle the mould and maintain the debugging, the problem of extravagant a large amount of manpowers and time, the utility model discloses only need adjust the length that the regulation stock inserted the stock spout on the mould, can bend the drift with the debugging, realized fast, debug the drift of bending accurately, simplified the step of debugging mould, improved production efficiency greatly, ensured the production process.

Drawings

Fig. 1 is a schematic overall structure diagram of a preferred embodiment of the precision bending die with an adjustable punch according to the present invention.

Main element number description:

the utility model discloses:

1: an upper die holder 2: the upper liner plate 3: upper splint

31: bending the punch 32: the long adjusting rod 321: adjusting inclined plane

4: the limiting mechanism 41: the limit bump 42: first elastic member

43: and (5) limiting a fixed block: the adjustment mechanism 51: fixed seat

52: locking bolt 53: the adjusting screw 54: second elastic member

61: a lower die holder 62: a lower clamping plate 63: lower template

7: bending and placing table 71: bent edge 72: punch head receding groove

73: and (3) positioning blocks 8: plate to be bent

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

The utility model provides a precision mould of bending with adjustable drift simplifies the step of debugging drift 31 of bending, realizes quick, accurately debugging the angle of the 31 punching press of drift of bending plate of bending. In the preferred embodiment of the precision bending die with the adjustable punch of the present invention, please refer to fig. 1, which is a schematic structural diagram of the preferred embodiment of the precision bending die with the adjustable punch of the present invention, the precision bending die comprises an upper die and a lower die, wherein the upper die comprises an upper die base 1, an upper padding plate 2 and an upper clamping plate 3 which are sequentially arranged from top to bottom; the upper clamping plate 3 is provided with a punch structure, and the punch structure comprises an adjusting long rod 32 and a bending punch 31; a punch hole extending vertically and downwardly is formed in the upper clamping plate 3, the bending punch 31 is inserted into the punch hole, the bending punch 31 is fixed to the upper clamping plate 3 through a limiting mechanism 4, and a first elastic piece 42 used for pushing the bending punch 31 upwards is arranged in the limiting mechanism 4; the upper clamping plate 3 is provided with the long rod sliding groove which penetrates through the first side surface of the upper clamping plate 3; the adjusting long rod 32 is inserted in the long rod sliding groove, a first end of the adjusting long rod 32 protrudes out of a first side surface of the upper clamping plate 3, a second end of the adjusting long rod 32 extends to the upper part of the top of the bending punch 31, and the top of the bending punch 31 abuts against the lower surface of the second end of the adjusting long rod 32; the lower surface of the second end of the long adjusting rod 32 is an adjusting inclined surface 321 inclined along the length direction; the length of the long adjusting rod 32 and the depth of the long rod sliding groove are greater than the maximum distance between the side surface of the bending punch 31 and the first side surface of the upper clamping plate 3; the long adjusting rod 32 can slide in the long rod sliding groove; the first end of the long adjusting rod 32 is provided with an adjusting mechanism 5 for adjusting the insertion depth of the long adjusting rod 32; the lower die comprises a lower die base 61, a lower clamping plate 62 and a lower die plate 63 which are sequentially arranged from bottom to top, a bending placing table 7 is arranged on the lower die plate 63 at a position corresponding to the bending punch 31, the bending placing table 7 is used for placing a plate 8 to be bent, a bending edge 71 and a punch abdicating groove 72 at one side of the bending edge 71 are arranged on the bending placing table 7, the plate 8 to be bent is downwards punched by the bending punch 31, and the plate 8 to be bent forms a bending structure along the bending edge 71; the periphery of the bending placing table 7 is provided with a positioning mechanism for fixing the plate 8 to be bent. As shown in figure 1, the utility model arranges a long rod chute penetrating through the first side surface of the upper clamp plate 3 at the top of the bending punch 31, inserts an adjusting long rod 32 which can slide along the depth direction of the long rod chute in the long rod chute, the top of the bending punch 31 supports against the inclined plane arranged at the lower surface of the second end of the adjusting long rod 32, and the adjusting long rod 32 is inserted into the long rod chute to extrude the bending punch 31 at different inclined positions of the adjusting inclined plane 321 of the adjusting long rod 32 by adjusting the depth of the adjusting long rod 32, thereby changing the distance between the lower end of the bending punch 31 and the plate 8 to be bent, realizing that the bending punch 31 can be adjusted in the mould, being convenient for adjusting and optimizing the angle of the bending punch 31 which can punch the bent plate, simplifying the step of debugging the mould, greatly improving the production efficiency, solving the problem that the original bending angle can not reach the set requirement, needing to dismantle the mould for maintenance and debugging, waste of a large amount of manpower and time; further, a first elastic member 42 capable of pushing the bending punch 31 upwards is arranged in the limiting mechanism 4 for fixing the bending punch 31 to the upper clamping plate 3, when the bending punch 31 needs to retract upwards for a distance, namely after the adjusting long rod 32 is pulled outwards for a distance, the top of the bending punch 31 has a distance with the adjusting inclined surface 321 of the adjusting long rod 32, and the bending punch 31 is pushed back upwards under the action of the first elastic member 42, so that the top of the bending punch 31 abuts against the adjusting inclined surface 321 of the adjusting long rod 32; the length of the adjusting long rod 32 and the depth of the long rod sliding groove are larger than the maximum distance between the side surface of the bending punch 31 and the first side surface of the upper clamping plate 3, so that when the adjusting long rod 32 slides in the long rod sliding groove, the outermost end of the adjusting inclined surface 321 of the adjusting long rod 32 can be extruded to the top of the bending punch 31, the innermost side and the outermost side of the adjusting inclined surface of the adjusting long rod can be extruded to the top of the bending punch 31, and the distance of the adjusting bending punch 31 is maximized; the lower die plate 63 is provided with a bending placing table 7 corresponding to the bending punch 31, the bending placing table 7 is provided with a bending edge 71 and a punch abdicating groove 72 on one side of the bending edge 71, and when the bending punch 31 downwards punches the plate 8 to be bent, the plate 8 to be bent forms a bending structure along the bending edge 71.

As described above, in the preferred embodiment of the precision bending die with the adjustable punch of the present invention, as shown in fig. 1, the limiting mechanism 4 includes a limiting projection 41 fixedly connected to one side of the top of the bending punch 31, and the limiting projection 41 is disposed in the limiting groove of the upper plate 3; the first elastic piece 42 is arranged between the bottom of the limiting lug 41 and the bottom of the limiting groove. The utility model realizes the fixation of the bending punch 31 on the upper clamping plate 3 by arranging the limit fixing block 43 at one side of the top of the bending punch 31 and fixing the limit in the limit groove of the upper clamping plate 3, and has simple structure and convenient installation; further, the first elastic piece 42 is arranged between the bottom of the limiting convex block 41 and the bottom of the limiting groove, so that the bending punch 31 is pushed upwards, and when the insertion depth of the adjusting long rod 32 is adjusted, the top of the bending punch 31 can abut against the adjusting inclined surface 321 of the adjusting long rod 32 under the action of the first elastic piece 42.

As described above the utility model discloses a precision mould of bending with adjustable drift, in its preferred embodiment, as shown in fig. 1, the spacing groove runs through the bottom surface of punch holder 3, the punch holder 3 bottom surface in the position in spacing groove is equipped with the shutoff spacing fixed block 43 of spacing tank bottom portion, the both ends of first elastic component 42 support respectively in spacing lug 41 with the top surface of spacing fixed block 43. The limiting fixing block 43 is fixed at the bottom of the limiting groove through a locking screw, and the first elastic piece 42 is arranged between the limiting bump 41 and the limiting fixing block 43, so that upward pushing of the bending punch 31 is realized.

As mentioned above, in the preferred embodiment of the present invention, the limiting protrusion 41 has an elastic member mounting groove with a downward opening for accommodating the first elastic member 42. The bottom of the limiting bump 41 is provided with an elastic piece mounting groove capable of accommodating the first elastic piece 42, two ends of the first elastic piece 42 respectively abut against the bottom of the elastic piece mounting groove and the top surface of the limiting fixed position, and the arranged first elastic piece 42 realizes upward pushing of the bending punch 31.

In the preferred embodiment of the precision bending die with adjustable punch according to the present invention, as shown in fig. 1, the adjusting mechanism 5 includes a fixing seat 51, a locking bolt 52 and an adjusting screw 53; the fixed seat 51 is of an L-shaped structure, a first end of the fixed seat 51 is fixed on the side surface of the upper backing plate 2, and a second end of the fixed seat 51 is arranged right opposite to the outer side of the first end of the long adjusting rod 32; a bolt through hole and a screw rod through hole which penetrate through the inner side surface and the outer side surface of the fixed seat 51 are formed in the position, corresponding to the long adjusting rod 32, of the second end of the fixed seat 51; the locking bolt 52 is inserted into the bolt through hole, the bolt through hole and the locking bolt 52 are fixed in a thread fit manner, and the tail end of the locking bolt 52 abuts against the first end of the long adjusting rod 32; the adjusting screw 53 is inserted into the screw through hole, a first end of the adjusting screw 53 is fixedly connected with a first end of the long adjusting rod 32, and a second end of the adjusting screw 53 protrudes out of the outer side surface of the fixed seat 51; a rod head is arranged at the second end of the adjusting screw 53, a second elastic part 54 is arranged between the rod head and the outer side surface of the fixed seat 51, and the second elastic part 54 is sleeved on the adjusting screw 53. When the bending angle of the bending punch 31 needs to be adjusted, after the locking bolt 52 is loosened, the adjusting long rod 32 is pulled outwards or pushed inwards for a distance, and then the locking bolt 52 is locked, so that the adjusting long rod 32 can be locked in the long rod sliding groove and cannot slide outwards; by arranging the second elastic part 54 between the rod head of the adjusting screw 53 and the outer side surface of the fixed seat 51, when the depth of the adjusting long rod 32 inserted into the long rod sliding groove is adjusted, after the locking bolt 52 is loosened, the adjusting long rod 53 can automatically return to the initial position due to the elasticity of the second elastic part 54, so that the adjustment of the insertion depth of the adjusting long rod is more convenient, the adjustment of the bending angle of the bending punch 31 is more accurate, and the precision of a bent product is improved; meanwhile, the adjustment long rod 53 does not automatically slide to a deeper position of the long rod sliding groove due to the acting force of the second elastic member 54.

As described above, in the preferred embodiment of the precision bending die with the adjustable punch of the present invention, the side of the bending punch 31 away from the bending edge 71 is provided with a side pressure head, and the bottom of the side pressure head is a first inclined plane; a bending slider groove is formed in the punch head abdicating groove 72 corresponding to the position of the side pressure head, a bending slider is placed on the bending slider groove, and a second inclined surface correspondingly matched with the first inclined surface of the side pressure head is arranged at the top of the bending slider; after the bending punch 31 is pressed down, the bending slide block can slide towards the bending edge 71 along the bending slide block groove, and the side surface of the bending slide block extrudes the bending part of the plate 8 to be bent to form a bending structure of more than 90 degrees. In the above embodiment of the present invention, when the bending punch 31 punches downward to a maximum distance, the bending angle of the plate can only reach 90 ° at maximum, and a plate with a larger angle cannot be bent; in this embodiment, the side face of the bending punch 31 far away from the bending edge 71 is provided with the side pressure head, when the bending punch 31 finishes punching, the first inclined face at the bottom of the side pressure head is pressed down to the second inclined face at the top of the bending slide block, the second inclined face is extruded through the first inclined face, so that the bending slide block slides towards the bending edge 71 along the bending slide block groove, the side face of the bending slide block extrudes a bending structure of which the bending position of the plate 8 to be bent is larger than 90 degrees, the problem that the bending punch 31 can only punch to form 90-degree bending angles at the maximum in the above embodiment is solved, so that a larger-angle bending angle can be formed by punching a die, punching requirements of more requirements are met, and the applicability of the die is improved.

As described above the utility model discloses a precision mould of bending with adjustable drift, in its preferred embodiment, the outside end of the slider of bending with bend and place and be provided with the third elastic component between the inside wall of platform 7. When the stamping is finished and the upper die is separated from the lower die and returns, and the stretched third elastic piece recovers the initial length, the bending slide block is pulled back, so that the bending slide block slides to the position right below the side pressure head, and preparation is made for a subsequent stamping process; the automatic return of the bent sliding block is realized through the third elastic piece, the manual auxiliary operation is reduced, the labor cost is reduced, and the production efficiency is greatly improved.

As described above in the present invention, in the preferred embodiment of the precision bending die with adjustable punch, as shown in fig. 1, the positioning mechanism includes a positioning block 73, the positioning block 73 is disposed on the periphery of the bending placement table 7, the top of the positioning block 73 is provided with a limit stop extending outwards, and the limit stop protrudes above the periphery of the plane portion of the plate 8 to be bent. The utility model discloses a set up the limit stop who extends to the planar part periphery top of waiting to bend plate 8 at the top of locating piece 73 for waiting to bend plate 8 at the in-process of bending, can be locked and place on platform 7 in bending, can not the landing, simple structure places when waiting to bend plate 8, blocks the planar part of plate at limit stop's lower surface, and is easy and simple to handle.

As mentioned above, in the preferred embodiment of the precision bending die with adjustable punch of the present invention, the first elastic member 42, the second elastic member 54 and the third elastic member are springs. Of course, other elastic members may be used as long as the requirement of elasticity is met.

As mentioned above, referring to fig. 1, the working process and principle of the precision bending die with the adjustable punch according to the present invention are explained by taking the above preferred embodiment as an example, specifically as follows:

the utility model arranges the long rod chute penetrating the first side surface of the upper splint 3 at the top of the bending punch 31, inserts the adjusting long rod 32 which can slide along the depth direction of the long rod chute in the long rod chute, the top of the bending punch 31 supports the inclined plane arranged at the lower surface of the second end of the adjusting long rod 32, and the bending punch 31 is extruded by different inclined positions of the adjusting inclined plane 321 of the adjusting long rod 32 by adjusting the depth of the adjusting long rod 32 inserted into the long rod chute, thereby changing the distance between the lower end of the bending punch 31 and the plate 8 to be bent, realizing that the bending punch 31 can be adjusted in the die, being convenient to adjust and optimize the angle of the bending punch 31 which can punch the bending plate, simplifying the step of debugging the die, greatly improving the production efficiency, solving the problem that the original bending angle does not reach the setting requirement, needing to dismantle the die for maintenance and debugging, waste of a large amount of manpower and time; further, a first elastic member 42 capable of pushing the bending punch 31 upwards is arranged in the limiting mechanism 4 for fixing the bending punch 31 to the upper clamping plate 3, when the bending punch 31 needs to retract upwards for a distance, namely after the adjusting long rod 32 is pulled outwards for a distance, the top of the bending punch 31 has a distance with the adjusting inclined surface 321 of the adjusting long rod 32, and the bending punch 31 is pushed back upwards under the action of the first elastic member 42, so that the top of the bending punch 31 abuts against the adjusting inclined surface 321 of the adjusting long rod 32; the length of the adjusting long rod 32 and the depth of the long rod sliding groove are larger than the maximum distance between the side surface of the bending punch 31 and the first side surface of the upper clamping plate 3, so that when the adjusting long rod 32 slides in the long rod sliding groove, the outermost end of the adjusting inclined surface 321 of the adjusting long rod 32 can be extruded to the top of the bending punch 31, the innermost side and the outermost side of the adjusting inclined surface of the adjusting long rod can be extruded to the top of the bending punch 31, and the distance of the adjusting bending punch 31 is maximized; the lower die plate 63 is provided with a bending placing table 7 corresponding to the bending punch 31, the bending placing table 7 is provided with a bending edge 71 and a punch abdicating groove 72 on one side of the bending edge 71, and when the bending punch 31 downwards punches the plate 8 to be bent, the plate 8 to be bent forms a bending structure along the bending edge 71. In a further embodiment, the limiting mechanism 4 comprises a limiting projection 41 fixedly connected with one side of the top of the bending punch 31, and the limiting projection 41 is arranged in a limiting groove of the upper clamping plate 3; the first elastic piece 42 is arranged between the bottom of the limiting lug 41 and the bottom of the limiting groove. The limiting fixing block 43 is arranged on one side of the top of the bending punch 31 and is limited and fixed in the limiting groove of the upper clamping plate 3, so that the bending punch 31 is fixed, the structure is simple, and the installation is convenient; further, the first elastic piece 42 is arranged between the bottom of the limiting convex block 41 and the bottom of the limiting groove, so that the bending punch 31 is pushed upwards, and when the insertion depth of the adjusting long rod 32 is adjusted, the top of the bending punch 31 can abut against the adjusting inclined surface 321 of the adjusting long rod 32. In a further embodiment, the adjusting mechanism 5 includes a fixing seat 51, a locking bolt 52 and an adjusting screw 53; the fixed seat 51 is of an L-shaped structure, a first end of the fixed seat 51 is fixed on the side surface of the upper backing plate 2, and a second end of the fixed seat 51 is arranged right opposite to the outer side of the first end of the long adjusting rod 32; a bolt through hole and a screw rod through hole which penetrate through the inner side surface and the outer side surface of the fixed seat 51 are formed in the position, corresponding to the long adjusting rod 32, of the second end of the fixed seat 51; the locking bolt 52 is inserted into the bolt through hole, the bolt through hole and the locking bolt 52 are fixed in a thread fit manner, and the tail end of the locking bolt 52 abuts against the first end of the long adjusting rod 32; the adjusting screw 53 is inserted into the screw through hole, a first end of the adjusting screw 53 is fixedly connected with a first end of the long adjusting rod 32, and a second end of the adjusting screw 53 protrudes out of the outer side surface of the fixed seat 51; a rod head is arranged at the second end of the adjusting screw 53, a second elastic part 54 is arranged between the rod head and the outer side surface of the fixed seat 51, and the second elastic part 54 is sleeved on the adjusting screw 53. When the bending angle of the bending punch 31 needs to be adjusted, after the locking bolt 52 is loosened, the adjusting long rod 32 is pulled outwards or pushed inwards for a distance, and then the locking bolt 52 is locked, so that the adjusting long rod 32 can be locked in the long rod sliding groove and cannot slide outwards; by arranging the second elastic part 54 between the rod head of the adjusting screw 53 and the outer side surface of the fixed seat 51, when the depth of the adjusting long rod 32 inserted into the long rod sliding groove is adjusted, after the locking bolt 52 is loosened, the adjusting long rod 53 can automatically return to the initial position due to the elasticity of the second elastic part 54, so that the adjustment of the insertion depth of the adjusting long rod is more convenient, the adjustment of the bending angle of the bending punch 31 is more accurate, and the precision of a bent product is improved; meanwhile, the adjustment long rod 53 does not automatically slide to a deeper position of the long rod sliding groove due to the acting force of the second elastic member 54.

The utility model discloses an accurate mould of bending with adjustable drift, the top through the drift 31 of bending sets up a gliding regulation stock 32, adjust the depth of insertion of adjusting stock 32, make the top of the drift 31 of bending of regulation inclined plane 321 extrusion of the slope of regulation stock 32, thereby change the punching press length of the drift 31 of bending, in order to reach the punching press demand of the angle of bending of plate, solved original book angle and not reach the settlement demand, need dismantle the mould and maintain the debugging, extravagant a large amount of manpowers and time's problem, the utility model discloses only need adjust the length that the stock 32 inserted the stock spout on the mould, can bend drift 31 with the debugging, realized fast, debug the drift 31 of bending accurately, simplified the step of debugging the mould, improved production efficiency greatly, ensured the production process.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. A precise bending die with an adjustable punch is characterized by comprising an upper die and a lower die,

the upper die comprises an upper die base, an upper base plate and an upper clamping plate which are sequentially arranged from top to bottom; the upper clamping plate is provided with a punch head structure, and the punch head structure comprises an adjusting long rod and a bending punch head; the upper clamping plate is provided with a punch hole extending vertically downwards, the bending punch is inserted into the punch hole and fixed to the upper clamping plate through a limiting mechanism, and a first elastic piece used for pushing the bending punch upwards is arranged in the limiting mechanism; a long rod sliding groove penetrating through the first side surface of the upper clamping plate is formed in the upper clamping plate; the adjusting long rod is inserted in the long rod sliding groove, the first end of the adjusting long rod protrudes out of the first side face of the upper clamping plate, the second end of the adjusting long rod extends to the upper part of the top of the bending punch, and the top of the bending punch abuts against the lower surface of the second end of the adjusting long rod; the lower surface of the second end of the long adjusting rod is an adjusting inclined surface inclined along the length direction of the long adjusting rod; the length of the adjusting long rod and the depth of the long rod sliding groove are greater than the maximum distance between the side surface of the bending punch and the first side surface of the upper clamping plate; the adjusting long rod can slide in the long rod sliding groove; the first end of the long adjusting rod is provided with an adjusting mechanism for adjusting the insertion depth of the long adjusting rod;

2. The precision bending die with the adjustable punch according to claim 1, wherein the limiting mechanism comprises a limiting lug fixedly connected with one side of the top of the bending punch, and the limiting lug is arranged in a limiting groove of the upper clamping plate; the first elastic piece is arranged between the bottom of the limiting lug and the bottom of the limiting groove.

3. The precision bending die with the adjustable punch according to claim 2, wherein the limiting groove penetrates through the bottom surface of the upper clamping plate, a limiting fixing block for plugging the bottom of the limiting groove is arranged at the position of the limiting groove on the bottom surface of the upper clamping plate, and two ends of the first elastic member respectively abut against the limiting convex block and the top surface of the limiting fixing block.

4. The precision bending die with the adjustable punch according to claim 3, wherein the limiting projection is provided with an elastic member mounting groove which is opened downwards and is used for accommodating the first elastic member.

5. The precision bending die with the adjustable punch according to claim 4, wherein the adjusting mechanism comprises a fixed seat, a locking bolt and an adjusting screw; the fixed seat is of an L-shaped structure, the first end of the fixed seat is fixed on the side surface of the upper backing plate, and the second end of the fixed seat is arranged right opposite to the outer side of the first end of the adjusting long rod; a bolt through hole and a screw rod through hole which penetrate through the inner side surface and the outer side surface of the fixing seat are formed in the position, corresponding to the long adjusting rod, of the second end of the fixing seat; the locking bolt is inserted in the bolt through hole, the bolt through hole and the locking bolt are fixed in a threaded fit mode, and the tail end of the locking bolt abuts against the first end of the long adjusting rod; the adjusting screw rod is inserted in the screw rod through hole, the first end of the adjusting screw rod is fixedly connected with the first end of the adjusting long rod, and the second end of the adjusting screw rod protrudes out of the outer side face of the fixed seat; the second end of adjusting screw is equipped with the pole head, the pole head with be equipped with the second elastic component between the lateral surface of fixing base, the second elastic component cover is located on the adjusting screw.

6. The precision bending die with the adjustable punch pin according to claim 5, wherein a side pressing head is arranged on the side, away from the bending edge, of the bending punch pin, and the bottom of the side pressing head is a first inclined surface; a bending slider groove is formed in the punch head abdicating groove at a position corresponding to the side pressure head, a bending slider is placed on the bending slider groove, and a second inclined surface correspondingly matched with the first inclined surface of the side pressure head is arranged at the top of the bending slider; after the bending punch is pressed downwards, the bending sliding block can slide towards the bending edge direction along the bending sliding block groove, and the side face of the bending sliding block extrudes the bending part of the plate to be bent to form a bending structure larger than 90 degrees.

7. The precision bending die with the adjustable punch as claimed in claim 6, wherein a third elastic member is arranged between the outer side end of the bending slide block and the inner side wall of the bending placing table.

8. The precision bending die with the adjustable punch according to claim 7, wherein the positioning mechanism comprises a positioning block, the positioning block is arranged on the periphery of the bending placing table, the top of the positioning block is provided with a limit stop extending outwards, and the limit stop protrudes above the periphery of the plane part of the plate to be bent.

9. The precision bending die with an adjustable punch according to claim 8, wherein the first, second and third elastic members are springs.