CN217290052U

CN217290052U - Metal traceless forming die structure

Info

Publication number: CN217290052U
Application number: CN202122177184.7U
Authority: CN
Inventors: 高书显
Original assignee: QINQIN PRECISION INDUSTRY (KUNSHAN) CO LTD
Current assignee: QINQIN PRECISION INDUSTRY (KUNSHAN) CO LTD
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-08-26
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses a metal traceless forming die structure, which comprises an upper die and a lower die, wherein the upper die can be positioned right above the lower die in a lifting motion manner, the metal traceless forming die structure also comprises an upper pressing block, a forming block, a stop block and a lower supporting block, the upper pressing block is fixedly arranged on the upper die along the longitudinal elasticity, the lower supporting block is fixedly arranged on the lower die, the upper pressing block and the lower supporting block are just arranged to realize the clamping and fixing of the non-bending part of a metal plate, the forming block can be hinged on the upper die in a rotating manner around a horizontal rotating shaft, at least one forming block is arranged on at least one side of the upper pressing block, at least one stop block is fixedly arranged on the lower die, each stop block is arranged at the outer side of the lower supporting block at intervals, an inverted-angle-shaped guide inclined plane is formed towards the upper end edge on one side of the lower supporting block, the outer edge of the lower end of the forming block, which is back to the upper pressing block, can tightly abut against and slide along the guide inclined plane, the utility model discloses a sheet metal smooth no trace in limit of bending has improved size precision, has reduced the cost.

Description

Metal traceless forming die structure

Technical Field

The utility model relates to a hardware mould field especially indicates a metal does not have trace forming die structure.

Background

At present, the common structure of metal plate bending in a hardware mould is as follows: set up bottom suspension stop 4 on the lower mould, set up briquetting 1 and shaping drift 15 on last mould, press from both sides tight sheet metal 5 through last briquetting 1 and bottom suspension stop 4, shaping drift 15 is along with the last straight up-down follow bottom suspension stop lateral surface down-punch metal edge simultaneously, and the sheet metal edge that is takes place to bend, and after the contact of bending, the direct rising of briquetting and shaping drift resets, the drawing of patterns simultaneously.

This bending method has several fatal disadvantages:

1) because the forming punch vertically rubs the outer surface of the metal plate downwards, the outer area of the metal plate has obvious scratches 16, and the appearance of the plate is influenced;

2) the inner side surface of the forming punch is of a straight-up and straight-down structure, and after forming is completed, the forming punch is in close contact with the bent edge of the metal plate, so that the demoulding difficulty is easily caused under the condition that two opposite surfaces or four surfaces of the metal plate are provided with the bent edges;

3) after bending, the bending size is prone to be out of place, and if the bending size needs to be adjusted, a new station needs to be added, and the cost of the die is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a metal does not have trace forming die structure, this metal does not have trace forming die structure can avoid the edge of bending after sheet metal bends to produce the friction vestige, realizes no trace and bends, and the size precision of just bending is high, the drawing of patterns of being convenient for.

The utility model discloses a solve the technical scheme that its technical problem adopted: the utility model provides a metal does not have trace forming die structure, includes mould and lower mould, go up mould can elevating movement be located directly over the lower mould, still include briquetting, shaping piece, dog and under bracing piece, it follows vertical elastic fixed mounting on last mould to go up the briquetting, under bracing piece fixed mounting is on the lower mould, goes up the briquetting and under bracing piece just to setting up the tight fixed of clamp that realizes the position of not bending to sheet metal, the shaping piece can be located on the mould around horizontal rotating shaft pivoted is articulated, and at least one shaping piece locates at least one side of briquetting, at least one dog fixed mounting is on the lower mould, and each dog interval locates the under bracing dog outside, the upper end edge of each dog towards under bracing piece one side forms the direction inclined plane of chamfer shape, the outside edge of shaping piece lower extreme briquetting can tightly support the direction inclined plane slides along it.

As a further improvement, the upper die comprises an upper die plate and a stripper plate, the stripper plate can be installed at the lower side of the upper die plate along the setting distance of vertical lifting motion, and a stripper elastic part is arranged in the upper die plate and provides downward elastic holding force for the stripper plate, the forming block is hinged to the upper die plate, a hollow-out avoiding structure for the forming block to pass through is arranged on the stripper plate, and the upper press block is fixedly arranged on the stripper plate.

As the utility model discloses a further improvement still is equipped with the drift fixed block, drift fixed block fixed mounting is on the cope match-plate pattern, and the drift fixed block passes the fretwork of taking off the flitch and dodges the structure and stretch out and take off the flitch downside, and the shaping piece is articulated to be located on the drift fixed block.

As the utility model discloses a further improvement, be equipped with along longitudinal extension's last thimble hole in the drift fixed block, going up the thimble that can gliding in the thimble hole and being equipped with, install thimble elastic component on the cope match-plate pattern, thimble elastic component provides decurrent elastic force for last thimble, goes up the thimble lower extreme and tightly supports the last briquetting and be close to the upper end surface on one side of the briquetting and force briquetting lower extreme towards keeping away from briquetting direction slope.

As a further improvement, the longitudinal side wall of the lower support block forms a bending inclined plane, and an acute angle included angle is formed between the bending inclined plane and the horizontal plane at the upper end of the lower support block.

As a further improvement, the forming block is back to the upper pressing block side, the lower end edge forms a fillet structure, and the guide inclined plane of the stop dog contacts with the fillet structure of the forming block lower end.

As a further improvement, the utility model discloses a still be equipped with the inserted bar, the ejector pad, buffering elastic component and firing pin, inserted bar fixed mounting is on last mould, the ejector pad can be towards the gliding installation of under bracing piece direction level on the lower mould, firing pin one end fixed mounting is on the ejector pad, the firing pin other end can tightly support the vertical lateral wall surface of briquetting one side in the back of the shaping piece, buffering elastic component provides the elasticity restoring force that keeps away from the under bracing piece for the ejector pad, the ejector pad level is forced towards the under bracing piece direction slip through the inclined plane contact on inserted bar lower extreme and the ejector pad.

As a further improvement, the upper die can be disassembled to be provided with the fine adjustment rod, and the upper end of the inserted rod tightly supports the lower side surface of the fine adjustment rod.

As a further improvement of the utility model, the other end face of the firing pin contacting with the forming block is of a round head structure.

As a further improvement, the lower extreme edge that the shaping piece is close to last briquetting one side also is formed with fillet structure, the shaping piece is close to the upper end of last briquetting one side and is formed with the bevel of dodging of chamfer shape.

The utility model has the advantages that: the utility model changes the straight-up and straight-down punching type bending structure, the forming block is designed into a structure capable of rotating around a horizontal shaft, the sliding block mechanism on the lower die drives the forming block to rotate so as to bend the edge of the metal plate, the friction between the forming block and the bending edge of the metal plate is avoided when the forming block is bent, the forming block automatically opens under the action of the upper thimble when rising and resetting, the forming block is not contacted with the bending edge of the metal plate, further, the grinding mark caused by the friction between the bending edge of the metal plate and the forming block is avoided, the bending edge of the metal plate is smooth and has no mark, the bending aesthetic property of the metal plate is greatly improved, the fine adjustment of the bending angle is realized through the fine adjustment structure, the condition that the bending is not in place is effectively prevented, the forming size is ensured, the workpiece meets the functional requirement, and the forming and the size fine adjustment can be realized by one step station of the bending die, the work station is saved, and the cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a prior art state diagram of a sheet metal being bent and bent;

FIG. 3 is a state diagram of a prior art sheet metal being bent and bent;

FIG. 4 is a diagram of the positions of grinding marks on a metal plate after the metal plate is bent by adopting the prior art;

FIG. 5 is a front view of the structure principle of the present invention;

fig. 6 is a schematic top view of the structure of the present invention;

FIG. 7 is a state diagram before the metal plate is bent by the utility model;

FIG. 8 is a diagram illustrating a state of a metal plate undergoing preliminary bending by the present invention;

FIG. 9 is a diagram illustrating a state of a metal plate being bent completely by the present invention;

fig. 10 is a state diagram of the fine adjustment of the bending angle of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.

Example (b): a metal traceless forming die structure comprises an upper die and a lower die, wherein the upper die can be positioned right above the lower die in a lifting motion manner, the metal traceless forming die structure also comprises an upper pressing block 1, a forming block 2, a stop block 3 and a lower supporting block 4, the upper pressing block 1 is fixedly arranged on the upper die along the longitudinal elasticity, the lower supporting block 4 is fixedly arranged on the lower die, the upper pressing block 1 and the lower supporting block 4 are arranged just opposite to each other to clamp and fix the non-bending part of the metal plate 5, the forming block 2 is hinged on the upper die and can rotate around the horizontal rotating shaft, at least one forming block 2 is arranged on at least one side of the upper pressing block 1, at least one stop block 3 is fixedly arranged on the lower die, and each dog 3 is arranged at the outer side of the lower supporting dog 3 at intervals, the upper end edge of one side of each dog 3, which faces the lower supporting block 4, forms an inverted-angle-shaped guide inclined plane, and the outer edge of the lower end of the forming block 2, which is back to the upper pressing block 1, can tightly support the guide inclined plane and slide along the guide inclined plane.

When the bending structure is used for bending a metal sheet, the metal sheet is positioned on a lower die, the lower side surface of the metal sheet is supported by a lower support block 4, the upper end edge of the lower support block 4 forms a bending inner angle of the metal sheet, the upper end edge of the lower support block 4 can be a sharp angle structure or a round angle structure, when the bending is started, an upper die descends, an upper press block 1 elastically presses the upper side surface of a metal plate 5 to realize the fixed positioning of the metal plate 5, the metal plate 5 is prevented from being deviated or warped at the upper part when the bending is performed, the lower end edge of a forming block 2 gradually contacts the upper side surface of a bending part of the metal sheet in the descending process of the forming block 2 along with the upper die, the edge of the metal sheet is slightly pressed by the forming block 2, small-angle bending is firstly generated, when the upper die continues to descend, the lower end of the forming block 2 contacts a guide inclined plane at the upper end of a stop block 3 and slides along the guide inclined plane, as the clearance between the guide inclined plane and the lower support block 4 is smaller and smaller, the forming block 2 starts to rotate around the articulated shaft, and further the edge of the preliminarily bent metal sheet is clamped to be closer to the side wall of the lower support block 4, when the upper die and the lower die are closed in place, the edge of the metal sheet 5 forms a bending angle meeting the bending angle requirement, then the forming block 2 and the upper press block 1 are reset along with the resetting of the upper die, the forming block 2 and the upper press block 1 are also reset, the bent side wall is not clamped by the forming block 2, the bent workpiece can be easily taken out, the bending structure can realize the rapid and accurate bending of the metal sheet, meanwhile, the forming block 2 wraps the metal sheet 5 in a rotating mode to rotate together, no scratch is generated, when the forming block 2 is reset to be separated from the workpiece, the hard friction with the bending side of the metal sheet is not generated by the rotation, and the friction of the forming block 2 on the bending surface of the metal sheet is avoided by the bending and demoulding structure, the grinding mark caused by friction can be avoided, so that the bent edge of the metal sheet is smooth and has no mark, and the bending attractiveness of the metal sheet is greatly improved.

The upper die comprises an upper die plate and a stripper plate, the stripper plate can be installed on the lower side of the upper die plate along the longitudinal lifting movement set distance, a stripper elastic piece is further arranged in the upper die plate and provides downward elastic holding force for the stripper plate, the forming block 2 is hinged to the upper die plate, a hollow avoiding structure for the forming block 2 to penetrate through is arranged on the stripper plate, and the upper press block 1 is fixedly arranged on the stripper plate. Through the design stripper plate, when making the last mould descend, go up briquetting 1 and contact sheet metal 5 earlier, and compress tightly sheet metal 5, then go up the mould compression and take off the material elastic component and continue to descend, the drift contact sheet metal edge that takes shape at this moment bends, the precision of bending has been ensured, except adopting the stripper plate to realize going up briquetting 1 elastic positioning, it also can adopt elastic material to make to go up briquetting 1, or go up the briquetting 1 and set up the elastic component between the mould and realize, this for the equivalent replacement that technical staff in the field thinks very easily according to this patent, belong to this patent protection scope.

The punching die is characterized by further comprising a punching head fixing block 6, the punching head fixing block 6 is fixedly installed on the upper die plate, the punching head fixing block 6 penetrates through the hollow avoiding structure of the stripper plate to extend out of the lower side of the stripper plate, and the forming block 2 is hinged to the punching head fixing block 6.

Be equipped with in the drift fixed block 6 along longitudinal extension's last thimble 7 holes, go up 7 downthehole gliding thimbles 7 that are equipped with of thimble, install thimble elastic component 8 on the cope match-plate pattern, thimble elastic component 8 provides decurrent elastic force for last thimble 7, goes up the thimble 7 lower extreme and tightly supports the upper end surface that the shaping piece 2 is close to on one side of briquetting 1 and forces shaping piece 2 lower extreme towards keeping away from the slope of 1 orientation of briquetting 2. Realize supporting the pressure to the elasticity of shaping piece 2 upper end through the thimble at 7 downthehole elastic sliding of last thimble, and then make shaping piece 2 lose slider mechanism horizontal back of supporting the pressure, the side of bending can be broken away from in the automatic outside upset of shaping piece 2 lower extreme, wearing and tearing side wall of bending when avoiding going up the mould drawing of patterns that resets, receive slider mechanism horizontal when supporting the pressure at shaping piece 2 simultaneously, it also can rotate gently and bend the sheet metal edge, avoid taking place the striking with the sheet metal surface, avoid bending the edge surface at the work piece and form any vestige.

The longitudinal side wall of the lower supporting block 4 forms a bending inclined plane 9, and an acute included angle is formed between the bending inclined plane 9 and the horizontal plane of the upper end of the lower supporting block 4. This structure is when sheet metal is bent, bend inclined plane 9 and sheet metal and bend and form certain accommodation space between the limit, can finely tune the fifty percent discount bent angle, if increase the bent angle, the metal after avoiding bending is bent the limit and is kick-backed, this structure can prevent to appear bending the condition not in place, has guaranteed the shaping size, satisfies functional requirement, still makes the one step of work station of bender can realize shaping and size fine setting simultaneously, has saved the work station, has reduced the cost.

The edge of the lower end of one side of the forming block 2, which is back to the upper pressing block 1, forms a fillet structure, and the guide inclined plane of the stop dog 3 is in contact with the fillet structure at the lower end of the forming block 2. Through inclined plane and fillet structure contact, form smooth relative slip, and then make the smooth gentle metal sheet of bending of shaping piece 2, avoid taking place to block phenomenon and striking phenomenon.

The lower support block mechanism is further provided with an inserted bar 10, a push block 11, a buffering elastic piece 12 and a firing pin 13, wherein the inserted bar 10 is fixedly installed on an upper die, the push block 11 can be installed on a lower die in a manner of horizontally sliding towards the direction of the lower support block 4, one end of the firing pin 13 is fixedly installed on the push block 11, the other end of the firing pin 13 can tightly abut against the surface of the longitudinal side wall of one side, back to the upper press block 1, of the forming block 2, the buffering elastic piece 12 provides elastic reset force for keeping away from the lower support block 4 for the push block 11, and the lower end of the inserted bar 10 is in contact with the upper end of the push block 11 through an inclined surface to force the push block 11 to horizontally slide towards the direction of the lower support block 4. The push block 11 slides transversely by the contact of the inserted link 10 and the push block 11, so as to drive the striker 13 to move transversely, and the side face of the striker 13 impacts the forming block 2 to realize the fine adjustment of the forming angle of the metal plate 5.

The upper die is also detachably provided with a fine adjustment rod 14, and the upper end of the insert rod 10 is tightly abutted to the lower side surface of the fine adjustment rod 14. The fine adjustment force of the striker 13 to the forming block 2 is adjusted by changing the thickness of the fine adjustment lever 14.

The end surface of the other end of the striker 13, which is contacted with the forming block 2, is of a round head structure.

The lower extreme edge that the shaping piece 2 is close to last briquetting 1 one side also is formed with fillet structure, the upper end that shaping piece 2 is close to last briquetting 1 one side is formed with the bevel-like inclined plane of dodging. Design into dodging inclined plane and fillet structure through being close to the lateral wall of last briquetting 1 one side with become briquetting 2 about both ends, can avoid taking place when becoming briquetting 2 slopes to take place to interfere with last briquetting 1 lateral wall, fillet structure further avoids its fish tail work piece limit surface of bending simultaneously.

Claims

1. The utility model provides a metal does not have trace forming die structure, includes mould and lower mould, go up the mould and can elevating movement be located directly over the lower mould, its characterized in that: the forming die comprises an upper pressing block (1), forming blocks (2), check blocks (3) and a lower supporting block (4), wherein the upper pressing block is fixedly installed on an upper die along longitudinal elasticity, the lower supporting block is fixedly installed on a lower die, the upper pressing block and the lower supporting block are just fixed in a clamping mode for realizing the non-bending part of a metal plate (5), the forming blocks can be arranged on the upper die in a hinged mode around a horizontal rotating shaft, at least one forming block is arranged on at least one side of the upper pressing block, at least one check block is fixedly installed on the lower die, the outer side of each check block is arranged on the outer side of the lower supporting block at intervals, the upper end edge of each check block towards one side of the lower supporting block forms an inverted-angle-shaped guide inclined plane, and the outer side edge of the lower end of the forming block, which faces away from the upper pressing block, can tightly support the guide inclined plane and slides along the guide inclined plane.

2. The metal traceless forming die structure of claim 1, wherein: the upper die comprises an upper die plate and a stripper plate, the stripper plate can be installed on the lower side of the upper die plate along the longitudinal lifting movement set distance, a stripper elastic part is further arranged in the upper die plate and provides downward elastic holding force for the stripper plate, the forming blocks are hinged to the upper die plate and are provided with hollow avoiding structures for the forming blocks to pass through, and the upper press block is fixedly arranged on the stripper plate.

3. The metal traceless forming die structure of claim 2, wherein: the punching head fixing block (6) is fixedly installed on the upper template, the punching head fixing block penetrates through the hollow avoiding structure of the stripper plate to extend out of the lower side of the stripper plate, and the forming block is hinged to the punching head fixing block.

4. The metal traceless forming die structure of claim 3, wherein: be equipped with in the drift fixed block along longitudinal extension's last thimble hole, thimble (7) are gone up to being equipped with that can slide in the thimble hole, install thimble elastic component (8) on the cope match-plate pattern, thimble elastic component provides decurrent elastic force for last thimble, goes up the thimble lower extreme and tightly supports the upper end surface that the shaping piece is close to briquetting one side and forces shaping piece lower extreme towards keeping away from last briquetting orientation slope.

5. The metal traceless forming die structure of claim 1, wherein: the longitudinal side wall of the lower supporting block forms a bending inclined plane (9), and an acute angle included angle is formed between the bending inclined plane and the horizontal plane of the upper end of the lower supporting block.

6. The metal traceless forming die structure of claim 1, wherein: the edge of the lower end of one side of the upper pressing block of the forming block is provided with a fillet structure, and the guide inclined plane of the stop block is in contact with the fillet structure at the lower end of the forming block.

7. The metal traceless forming die structure of claim 1 or 6, wherein: still be equipped with inserted bar (10), ejector pad (11), buffering elastic component (12) and firing pin (13), inserted bar fixed mounting is on last mould, the ejector pad can be towards the gliding installation of lower support piece direction level on the lower mould, firing pin one end fixed mounting is on the ejector pad, the firing pin other end can tightly support the shaping piece longitudinal side wall surface of briquetting one side of going up in the back of, buffering elastic component provides the elasticity reset force that keeps away from the lower support piece for the ejector pad, the ejector pad level is slided towards the lower support piece direction through the inclined plane contact force to the ejector pad lower extreme and ejector pad upper end.

8. The metal traceless forming die structure of claim 7, wherein: the upper die is also detachably provided with a fine adjustment rod (14), and the upper end of the insert rod is tightly abutted to the lower side surface of the fine adjustment rod.

9. The metal traceless forming die structure of claim 7, wherein: the end face of the other end of the firing pin, which is contacted with the forming block, is of a round head structure.

10. The metal traceless forming die structure of claim 1, wherein: the lower extreme edge that the shaping piece is close to last briquetting one side also is formed with fillet structure, the shaping piece is close to the upper end of last briquetting one side and is formed with the bevel's of dodging inclined plane.