CN209631938U - Stapler central bracket goes out part stepping punching mould automatically - Google Patents

Abstract

The utility model discloses a kind of stapler central brackets to go out part stepping punching mould automatically, comprising: upper die holder and lower die holder setting up and down, stripper and discharging device；Discharging device includes: L bracket, wedge block, torque spring, support, pusher plate and pusher plate reset spring, L bracket is fixed on upper die holder on one side, another side is downward, and end is hinged with wedge block by torque spring, support is fixed on the lower die seat, the upper end head of support is formed with through slot, pusher plate is horizontal through through slot, the front of pusher plate is L shape bending structure, pusher plate rear is formed with snap ring, pusher plate reset spring is provided between snap ring and support, using grading punching mode and automatic discharge apparatus, realize batch production and self-emptying, production efficiency and high degree of automation.

Description

Stapler central bracket goes out part stepping punching mould automatically

Technical field

The utility model relates to stamping die technology, more particularly to a kind of stapler central bracket is automatic Part stepping punching mould out.

Background technique

Currently, stapler is common office articles, in the overall structure of stapler, central bracket is important composition Part mainly plays a supportive role, it is desirable that stability is high, and has certain compression strength.Stapler central bracket generally passes through Mould punching molding, with the rapid development of society, stapler uses more and more extensive, the stamping die of stapler central bracket Development be also getting faster.

But due to the molding of stapler central bracket need by punching and repeatedly bending and etc., forming process compared with For complexity, and in order to meet the high-volume demand of stapler central bracket, mold is also required to realize the automation of batch production It is required that and present stamping die, generally existing batch production difficulty is big, formed precision is low problem, and due to stapler The structure of central bracket is longer, is also not easy to go out part automatically, brings many problems for automated production.

Therefore, how providing one kind can produce in batches, go out part, and the stapler central bracket punching that punching precision is high automatically The problem of compression mould is those skilled in the art's urgent need to resolve.

Utility model content

In view of this, the present invention provides a kind of stapler central brackets to go out part stepping punching mould automatically, uses Grading punching mode and automatic discharge apparatus realize batch production and self-emptying, production efficiency and high degree of automation.

To achieve the goals above, the utility model adopts the following technical solution:

A kind of stapler central bracket goes out part stepping punching mould automatically, comprising: upper die holder and lower die holder setting up and down, Stripper and discharging device；

Wherein, it is connected between the upper die holder and the lower die holder by guiding device, the guiding device is diagonally arranged；

Backing plate and upper mould fixed plate are connected in turn below the upper die holder, between the backing plate and the upper mould fixed plate The punch set extended downwardly is installed, the punch set successively includes piercing punch group, L shape bending punch and U-shaped from left to right Bending punch；

It is provided with concave template above the lower die holder, the concave template successively includes and the piercing punch group from left to right Corresponding slug cavity plate group, L shape bending die corresponding with the L shape bending punch, and it is corresponding with the U-shaped bending punch U-shaped bending die；

The stripper is connect by several unloading bolts with the upper mould fixed plate, the piercing punch group, the L shape Bending punch and the U-shaped bending punch pass through the stripper；

The discharging device is set to the dead astern of the U-shaped bending punch and the U-shaped bending die, comprising: L shape branch Frame, wedge block, torque spring, support, pusher plate and pusher plate reset spring, screw and three straight pins, the L bracket Be fixed on upper die holder on one side, downward, and the end is hinged with wedge block by the screw for the end of another side, In two straight pins connect by the torque spring with the screw, another described straight pin and the wedge-shaped cunning Block limit clamping, the support is fixed on the lower die holder, and the upper end head of the support is formed with through slot, the pusher plate Horizontal through the through slot, the front of the pusher plate is L shape bending structure, and the pusher plate rear is formed with snap ring, described Pusher plate reset spring is provided between snap ring and the support.

Through the above technical solutions, the utility model realizes that rapid batch produces using grading punching mode, using automatic Discharging device realizes the automatic spring to moulding material, is automatically processed using the realization of elastic stripper to clout, has efficient The advantages of rate, high automatically working.

Preferably, go out in part stepping punching mould automatically in a kind of above-mentioned stapler central bracket, the stamping die from Left-to-right is divided into five stations, respectively die cut edge station, idle station one, L shape bending station, idle station two and U-bend Bent station, and each station area equation, the right side and the idle station one of the piercing punch group and the die cut edge station Left side it is corresponding, the L shape bending punch is corresponding with the L shape bending station, the U-shaped bending punch and the U-bend Bent station is corresponding, by the division to station, realizes stapler central bracket punching, bending and three-step process of bending and cutting again Exact operations, the utility model using automatic feeding carry out feeding, therefore, the distance of single feed is then a work Position, is also achieved that the feeding style of step-feeding；Due to the continuity of multi-station progressive die process, this mold is set using single Meter, and idle station is set, and part is laterally disposed, the length of mold is greatly reduced, simultaneously because each process is in punching press Shi Shouli is larger, therefore needs that rim charge is arranged in two sides, is on the one hand on the other hand pressed in punching press as feeding by carrier Material.

It should be noted that due to the feed device that automatic feeding is conventional step-feeding blanking die, not originally The emphasis of utility model, details are not described herein.

Preferably, go out in part stepping punching mould automatically in a kind of above-mentioned stapler central bracket, the piercing punch group It including die cut edge punch-pin, rushes circular hole punch-pin and rushes irregularly-shaped hole punch-pin, therefore, the utility model had been punched to save step The punching of appearance profile, circular hole and irregularly-shaped hole is completed in journey, it is high-efficient.

Preferably, go out in part stepping punching mould automatically in a kind of above-mentioned stapler central bracket, further include fine positioning zero Part one, the fine positioning part one include the pilot pin for being set to the L shape bending punch dead astern, and the pilot pin is fixed on It between the backing plate and the upper mould fixed plate and stretches out downwards, is provided on the concave template corresponding with the pilot pin Correcting hole plays the correcting positioning action before molding, is conducive to the accuracy for improving punching press.

Preferably, go out in part stepping punching mould automatically in a kind of above-mentioned stapler central bracket, further include fine positioning zero Part two, the fine positioning part two include the spring pilot pin being set in the U-shaped bending punch, and the spring pilot pin is stretched Out downwards, it is provided with spring correcting hole corresponding with the spring pilot pin on the concave template, plays leading before molding Positive positioning action is conducive to the accuracy for improving punching press.

Preferably, go out in part stepping punching mould automatically in a kind of above-mentioned stapler central bracket, in the concave template Several floating roof pins are provided with, the floating roof pin is corresponding with the L shape bending station and the U-shaped bending station, the floating roof pin Lower section is provided with floating roof spring, further functions as positioning action, and can eject semi-finished product material and finished product material in die sinking, has Continue conveying and the pop-up of finished product material conducive to semi-finished product material.

Preferably, go out in part stepping punching mould automatically in a kind of above-mentioned stapler central bracket, further include stock guide, institute The upper front and rear sides that stock guide is located at the concave template are stated, control strip is played and advances stable effect, the punching press material of this mold Material is strip, and the thickness of strip only has 1mm, therefore uses automatic feeding, is equipped at mold pan feeding and adds stock guide to make item Material more stably enters mold.

It can be seen via above technical scheme that compared with prior art, the utility model, which discloses, provides a kind of stapler Central bracket goes out part stepping punching mould automatically, has the advantages that

1, using step-feeding impact style, die cut edge station, idle station one, L shape is marked off to stamping die and are bent work Stapler central bracket punching, bending and the three of bending and cutting again are realized in five position, idle station two and U-shaped bending station stations The exact operations of step process, and idle station is set, realize the transition connection of effective station, and part is laterally disposed, greatly Reduce the length of mold, realizes the purpose of quick batch production；

2, using automatic discharge apparatus, when the die is closed, since the elastic force of pusher plate reset spring acts on, wedge block is carried out Own rotation；When die sinking, wedge block compression pusher plate reset spring simultaneously pushes pusher plate to work, and realizes automatic part out Effect, overall structure cooperate simple ingenious, high degree of automation；

3, punching clout is handled using elastic stripper, further increases production efficiency.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 attached drawing is overall structure diagram provided by the utility model；

Fig. 2 attached drawing is top view provided by the utility model；

Fig. 3 attached drawing is the cross-sectional view in the face A-A in attached drawing 2 provided by the utility model；

Fig. 4 attached drawing is the cross-sectional view in the face B-B in attached drawing 2 provided by the utility model；

Fig. 5 attached drawing is the cross-sectional view in the face C-C in attached drawing 2 provided by the utility model；

Fig. 6 attached drawing is station arrangement schematic diagram provided by the utility model；

Fig. 7 attached drawing is the schematic diagram of blanking part provided by the utility model；

Fig. 8 attached drawing is semi-finished product schematic diagram of the blanking part provided by the utility model after the bending of L shape；

Fig. 9 attached drawing is finished product schematic of the semi-finished product provided by the utility model after U-bend is rolled over；

Figure 10 attached drawing is the oily structural schematic diagram of wedge block provided by the utility model.

Wherein:

1 is upper die holder, and 2 be lower die holder, and 3 be stripper, and 4 be discharging device, and 5 be guiding device, and 6 be backing plate, and 7 be upper Mould fixed plate, 8 be piercing punch group, and 9 be L shape bending punch, and 10 be U-shaped bending punch, and 11 be concave template, and 12 be slug cavity plate Group, 13 be L shape bending die, and 14 be U-shaped bending die, and 15 be unloading bolt, and 16 be L bracket, and 17 be wedge block, and 18 are Torque spring, 19 be support, and 20 be pusher plate, and 21 be pusher plate reset spring, and 22 be through slot, and 23 be snap ring, and 24 be die cut edge Station, 25 be idle station one, and 26 be L shape bending station, and 27 be idle station two, and 28 be U shape bending station, and 29 be pilot pin, 30 For correcting hole, 31 be spring pilot pin, and 32 be spring correcting hole, and 33 be floating roof pin, and 34 be floating roof spring, and 35 be round hole, 36 It is L shape bending part for profiled holes, 37,38 be U-bend folding part, and 39 be screw, and 40 be straight pin, and 41 be oil cylinder, and 42 be oil nozzle, 43 be cutting punch-pin.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1 to Fig. 6, the utility model embodiment discloses a kind of stapler central bracket and goes out part progressive stamping automatically Mold, comprising: upper die holder 1 and lower die holder 2 setting up and down, stripper 3 and discharging device 4；

Wherein, it is connected between upper die holder 1 and lower die holder 2 by guiding device 5, guiding device 5 is diagonally arranged, and is oriented to Device 5 is slide-and-guide mode, cooperates the structure being diagonally arranged that can preferably constrain guiding Longitudinal precision, concentricity is good；

It is connected with backing plate 6 and upper mould fixed plate 7 below upper die holder 1 in turn, upper die holder 1, backing plate 6 and upper mould fixed plate 7 are logical Cross screw to be fixedly connected, the punch set extended downwardly be installed between backing plate 6 and upper mould fixed plate 7, punch set from left to right according to Secondary includes piercing punch group 8, L shape bending punch 9 and U-shaped bending punch 10, and backing plate 6 is for preventing punch-pin in clamping process Offset；

Concave template 11 is provided with above lower die holder 2, concave template 11 successively includes corresponding with piercing punch group 8 from left to right Slug cavity plate group 12, L shape bending die 13 corresponding with L shape bending punch 9, and U-bend corresponding with U-shaped bending punch 10 Bent cavity plate 14 is also formed with discharge port below slug cavity plate group, rushes useless clout and is directly discharged from discharge port；

Stripper 3 is connect by several unloading bolts 15 with upper mould fixed plate 7, piercing punch group 8, L shape bending punch 9 Stripper 3 is passed through with U-shaped bending punch 10；

Discharging device 4 is set to the dead astern of U-shaped bending punch 10 and U-shaped bending die 14, comprising: L bracket 16, Wedge block 17, torque spring 18, support 19, pusher plate 20 and pusher plate reset spring 21, screw 39 and three straight pins 40, L bracket 16 is fixed on one side on upper die holder 1, and downward, and end is hinged with wedge-shaped cunning by screw 39 for the end of another side Block 17, two of them straight pin 40 are connect by torque spring 18 with screw 39, another straight pin 40 and wedge block 17 Limit clamping, support 19 is fixed on lower die holder 2, and the upper end head of support 19 is formed with through slot 22, pusher plate 20 horizontal through Through slot 22, the front of pusher plate 20 are L shape bending structure, and 20 rear of pusher plate is formed with snap ring 23, snap ring 23 and support 19 it Between be provided with pusher plate reset spring 21.

Referring to attached drawing 10, oil cylinder 41 is provided on wedge block 17, oil cylinder 41 is connected with oil nozzle 42, and oil nozzle 42 is directed toward screw 39 positions being connect with wedge block 17.Since wedge block 17 is to realize by the hinged rotation with screw 39 to pusher plate 20 promotion, therefore, the two need to guarantee there is good lubricant effect, upward under the action of wedge block 17 is in pusher plate 20 When rotation, the automatic oil dripping of oil nozzle 42 is lubricated, and remains the lubricant effect of the two.

In order to further optimize the above technical scheme, stamping die is divided into five stations from left to right, respectively rushes Trimming station 24, idle station 1, L shape bending station 26, idle station 2 27 and U-shaped bending station 28, and each station area phase Deng piercing punch group 8 is corresponding with the left side of the right side of die cut edge station 27 and idle station 1, L shape bending punch 9 and L Shape bending station 26 is corresponding, and U-shaped bending punch 10 is corresponding with U-shaped bending station 28.

In order to further optimize the above technical scheme, piercing punch group 8 includes die cut edge punch-pin, rushes circular hole punch-pin and rush different Shape hole punch-pin.

It in order to further optimize the above technical scheme, further include fine positioning part one, fine positioning part one includes being set to L The pilot pin 29 in 9 dead astern of shape bending punch, pilot pin 29 are fixed between backing plate 6 and upper mould fixed plate 7 and stretch out downwards, Correcting hole 30 corresponding with pilot pin 29 is provided on concave template 11.

It in order to further optimize the above technical scheme, further include fine positioning part two, fine positioning part two includes being set to U Spring pilot pin 31 in shape bending punch 10, spring pilot pin 31 are stretched out downwards, are provided on concave template 11 and spring correcting The corresponding spring correcting hole 32 of pin 31.

In order to further optimize the above technical scheme, several floating roof pins 33, floating roof pin 33 and L are provided in concave template 11 Shape bending station 26 and U-shaped bending station 28 are corresponding, are provided with floating roof spring 34 below floating roof pin 33.

It in order to further optimize the above technical scheme, further include stock guide, stock guide is located at the left side of concave template 11.

In order to further optimize the above technical scheme, when stamping die is opened, wedge block 17 is located at pusher plate 20 Top, when stamping die molding, wedge block 17 is located at the lower section of pusher plate 20.

In order to further optimize the above technical scheme, pusher plate 20 is spheroidal structure close to one end of wedge block 17.

The course of work of the utility model is broadly divided into two parts: being respectively punch forming and self-emptying, this is practical new Type conveys strip using automatic feeding, is not also this since automatic feeding is conventional feed device The emphasis of utility model, details are not described herein, is described in detail below for the working principle of punch forming and self-emptying.

Punch forming principle:

Referring to Fig. 1 to Fig. 6, strip is at the uniform velocity sent into the top of concave template 11, stock guide by automatic feeding from left to right Control feedstock direction.

Mold for the first time: upper die holder 1 moves down, and stripper 3 contacts strip first, and in the present invention, stripper 3 also rises To the effect of pressure plate.

Piercing punch group 8 is contacted with strip, and is continued traveling downwardly and completed into concave template 11 to molding, at this point, piercing punch Group 8 is respectively completed appearance profile punching and punching, die cut edge punch-pin on the right side of workpiece and is punched out shape process part processing as shown in Figure 7, It rushes circular hole punch-pin to be punched to form round hole 35, rushes irregularly-shaped hole punch-pin and be punched to form profiled holes 36.

It should be noted that the feeding end of setting strip is only sent to the position of die cut edge station 24, then in above-mentioned molding In the process, it is only completed and clout work is cut to the punching of strip, form the right side of process part processing as shown in Figure 7, and L shape bending station 26, idle station 2 27 and U-shaped bending station 28 are null, non-punching press in clamping process since there is no strips.

Be opened for the first time: upper die holder 1 moves up, and piercing punch group 8, L shape bending punch 9 and U-shaped bending punch 10 are from cavity plate For the demoulding of plate 11 until being kept completely separate, stripper scrapes strip.

Second of molding: strip is at the uniform velocity conveyed a station distance by automatic feeding from left to right, until idle station one At 25, upper die holder 1 is moved down, and stripper 3 contacts strip first, and piercing punch group 8 is contacted with strip, and is continued traveling downwardly across strip It is completed into concave template 11 to molding, at this point, piercing punch group 8 completes shape on the right side of next workpiece at punching station 24 Profile punching and punching, while appearance profile punching and punching on the left of unit one are completed at idle station 1, it is formed such as Process part processing shown in Fig. 7.

Second is opened: upper die holder 1 moves up, and piercing punch group 8, L shape bending punch 9 and U-shaped bending punch 10 are from cavity plate For the demoulding of plate 11 until being kept completely separate, stripper scrapes strip.

Third time molds: strip is at the uniform velocity conveyed a station distance by automatic feeding from left to right again, at this point, band Material is delivered to L shape bending station 26, and upper die holder 1 moves down, and stripper 3 contacts strip first, and piercing punch group 8 and the bending of L shape are convex The contact of 9 strip of mould, and continue traveling downwardly and completed into concave template 11 to molding, at this point, piercing punch group 8 is in 24 He of die cut edge station Appearance profile punching and punching are completed between idle station 1 again, forms the process part processing such as Fig. 7；L shape bending punch 9 completes L The bending of shape bending part 37, forms process part processing as shown in Figure 8, and U-shaped bending station 28 is due to there is no strip, It is null, non-punching press in clamping process.

Third time is opened: upper die holder 1 moves up, and piercing punch group 8, L shape bending punch 9 and U-shaped bending punch 10 are from cavity plate For the demoulding of plate 11 until being kept completely separate, stripper scrapes strip, and floating roof pin 33 jacks up the semi-finished articles of L shape bending station 26. 4th molding: strip is at the uniform velocity conveyed a station distance by automatic feeding from left to right again, at this point, strip is delivered to Idle station 2 27, upper die holder 1 move down, and stripper 3 contacts strip first, and piercing punch group 8 and L shape bending punch 9 connect with strip Touching, and continue traveling downwardly and completed into concave template 11 to molding, at this point, piercing punch group 8 completes workpiece configurations profile punching again And punching, form the left side of process part processing part 1 as shown in Figure 7；The bending of the complete at L-shaped bending part 37 again of L shape bending punch 9, Process part processing as shown in Figure 8 is formed, and U-shaped bending station 28 is since there is no strips, is null in clamping process, not Punching press.

4th die sinking: upper die holder 1 moves up, and piercing punch group 8, L shape bending punch 9 and U-shaped bending punch 10 are from cavity plate For the demoulding of plate 11 until being kept completely separate, stripper scrapes strip, and floating roof pin 33 jacks up the semi-finished articles of L shape bending station 26.

5th molding: strip is at the uniform velocity conveyed a station distance by automatic feeding from left to right again, at this point, band Material is transported to U-shaped bending station 28, and upper die holder 1 moves down, and stripper 3 contacts strip first, and piercing punch group 8, the bending of L shape are convex Mould 9 and U-shaped bending punch 10 are contacted with strip, and are continued traveling downwardly and completed into concave template 11 to molding, at this point, piercing punch group 8 complete workpiece configurations profile punching and punching again, form process part processing as shown in Figure 7；L shape bending punch 9 is complete at L-shaped again The bending of bending part 37, forms process part processing as shown in Figure 8, and U-shaped bending punch 10 completes the bending of U-bend folding part 38, shape At the finished parts of such as Fig. 9, meanwhile, cutting punch-pin 43 cuts off workpiece and strip from interface.

5th die sinking: upper die holder 1 moves up, and piercing punch group 8, L shape bending punch 9 and U-shaped bending punch 10 are from cavity plate For the demoulding of plate 11 until be kept completely separate, stripper scrapes strip, and floating roof pin 33 is by the process part processing and U-bend of L shape bending station 26 The finished parts of bent station 28 jack up, and are ejected by 4 finished parts of discharging device.

It should be noted that every time during molding, pilot pin 29 and spring pilot pin 31 first with 30 He of correcting hole Spring correcting hole 32 cooperates, and realizes the effect of correcting positioning.

Equally, floating roof pin 33 die cut edge station 24, idle station 1, be L shape bending station 26, idle station 2 27, U-shaped Bending station 28 has setting, in figure and is not drawn into, can guarantee that the jack-up of strip is in stable condition.

Process part processing is connect with strip by carrier, guarantees smoothly to be sent into process part processing, logical in last U-shaped bending station It crosses cutting punch and matrix to cut off workpiece and strip, realizes separation.

After the completion of punching press, strip is jacked up by floating roof pin 33, is then sent into strip forward by automatic feeding.

Hereafter, the punching press for completing blanking part, semi-finished articles and finished parts is molded each time, and being opened can eject each time One finished parts, forms the production model of progressive stamping.

Self-emptying principle:

Upper die holder 1 moves down, and the L bracket 16 on upper die holder 1 drives horizontally disposed wedge block 17 to move down, wedge The lower edge of shape sliding block 17 is abutted with the rear end of pusher plate 20, presses the deformation of torque spring 18, wedge block 17 is upwards Rotation, until the traveling of wedge block 17 to the lower section of pusher plate 20, torque spring 18 resets, wedge block 17 after mold clamping Restore to horizontality, at this point, due to the active force of pusher plate reset spring, 17 own rotation of wedge block does not push push piece Plate 20 moves.

Then, upper die holder 1 moves up, and wedge block 17 moves up, the inclined-plane of wedge block 17 and the rear end of pusher plate 20 It abuts, under the action of inclined-plane, wedge block 17 pushes pusher plate 20 to squeeze pusher plate reset spring 21, and pusher plate 20 is transported forward It is dynamic, the finished parts for completing U-bend folding are ejected, until wedge block 17 is separated with pusher plate 20, the lower edge of wedge block 17 To the top of pusher plate 20, pusher plate 20 resets row under the action of pusher plate reset spring 21, completes self-emptying movement.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part It is bright.

The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims (7)

1. a kind of stapler central bracket goes out part stepping punching mould automatically characterized by comprising upper die holder setting up and down (1) and lower die holder (2), stripper (3) and discharging device (4)；

Wherein, it is located by connecting between the upper die holder (1) and the lower die holder (2) by guiding device (5), the guiding device (5) diagonal setting；

It is connected with backing plate (6) and upper mould fixed plate (7) below the upper die holder (1) in turn, the backing plate (6) and the upper mold are solid The punch set extended downwardly is installed, the punch set successively includes piercing punch group (8), L shape from left to right between fixed board (7) Bending punch (9) and U-shaped bending punch (10)；

It is provided with concave template (11) above the lower die holder (2), the concave template (11) successively includes and the punching from left to right The corresponding slug cavity plate group (12) of hole punch set (8), L shape bending die (13) corresponding with L shape bending punch (9), with And U-shaped bending die (14) corresponding with U-shaped bending punch (10)；

The stripper (3) is connect by several unloading bolts (15) with the upper die holder (1), the piercing punch group (8), institute It states L shape bending punch (9) and the U-shaped bending punch (10) passes through the stripper (3)；

The discharging device (4) is set to the dead astern of the U-shaped bending punch (10) and the U-shaped bending die (14), packet It includes: L bracket (16), wedge block (17), torque spring (18), support (19), pusher plate (20), pusher plate reset spring (21), screw (39) and three straight pins (40), being fixed on the upper die holder (1) on one side for the L bracket (16) are another Downward, and the end is hinged with the wedge block (17) by the screw (39), circle described in two of them for the end on side Pin (40) is connect by the torque spring (18) with the screw (39), another described straight pin (40) and the wedge Shape sliding block (17) limit clamping, the support (19) are fixed on the lower die holder (2), the upper end capitiform of the support (19) At having through slot (22), the pusher plate (20) is the bending of L shape horizontal through the through slot (22), the front of the pusher plate (20) Structure, pusher plate (20) rear are formed with snap ring (23), are provided with and push away between the snap ring (23) and the support (19) Part sheet reset spring (21).

2. a kind of stapler central bracket according to claim 1 goes out part stepping punching mould automatically, which is characterized in that institute It states stamping die and is divided into five stations, respectively die cut edge station (24), idle station one (25), the bending of L shape from left to right Station (26), idle station two (27) and U-shaped bending station (28), the piercing punch group (8) and the die cut edge station (24) Right side and the idle station one (25) left side it is corresponding, the L shape bending punch (9) and the L shape bending station (26) corresponding, the U-shaped bending punch (10) is corresponding with U-shaped bending station (28).

3. a kind of stapler central bracket according to claim 1 goes out part stepping punching mould automatically, which is characterized in that institute Piercing punch group (8) is stated to include die cut edge punch-pin, rush circular hole punch-pin and rush irregularly-shaped hole punch-pin.

4. a kind of stapler central bracket according to claim 1 goes out part stepping punching mould automatically, which is characterized in that also Including fine positioning part one, the fine positioning part one includes the pilot pin for being set to L shape bending punch (9) dead astern (29), the pilot pin (29) is fixed between the backing plate (6) and the upper mould fixed plate (7) and is stretched out downwards, described recessed Correcting hole (30) corresponding with the pilot pin (29) is provided in template (11).

5. a kind of stapler central bracket according to claim 1 goes out part stepping punching mould automatically, which is characterized in that also Including fine positioning part two, the fine positioning part two includes the spring pilot pin being set on the U-shaped bending punch (10) (31), the spring pilot pin (31) is stretched out downwards, and it is right with the spring pilot pin (31) to be provided on the concave template (11) The spring correcting hole (32) answered.

6. a kind of stapler central bracket according to claim 2 goes out part stepping punching mould automatically, which is characterized in that In Several floating roof pins (33), the floating roof pin (33) and the L shape bending station (26) and institute are provided in the concave template (11) It states U-shaped bending station (28) to correspond to, is provided with floating roof spring (34) below the floating roof pin (33).

7. a kind of stapler central bracket according to claim 1 goes out part stepping punching mould automatically, which is characterized in that also Including stock guide, the stock guide is located at the upper front and rear sides of the concave template (11).