CN112238184A - Pipe clamp stamping die - Google Patents

Pipe clamp stamping die Download PDF

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Publication number
CN112238184A
CN112238184A CN201910642080.3A CN201910642080A CN112238184A CN 112238184 A CN112238184 A CN 112238184A CN 201910642080 A CN201910642080 A CN 201910642080A CN 112238184 A CN112238184 A CN 112238184A
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CN
China
Prior art keywords
die
bending
male die
male
pipe clamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910642080.3A
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Chinese (zh)
Inventor
韩永辉
柴书杰
陈涛
底亚新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Senyuan Heavy Industry Co Ltd
Original Assignee
Henan Senyuan Heavy Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Senyuan Heavy Industry Co Ltd filed Critical Henan Senyuan Heavy Industry Co Ltd
Priority to CN201910642080.3A priority Critical patent/CN112238184A/en
Publication of CN112238184A publication Critical patent/CN112238184A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/08Dies with different parts for several steps in a process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002Processes combined with methods covered by groups B21D1/00 - B21D31/00

Abstract

The invention relates to a pipe clamp stamping die. The pipe clamp stamping die comprises an upper die base, a lower die base, a male die fixing plate, a bending male die, a blanking male die and a female die, wherein the male die fixing plate is fixedly arranged on the upper die base; the female die is fixedly arranged on the lower die holder; the bending male die can move up and down relative to the male die fixing plate, and an upper limit position and a lower limit position are arranged in the moving stroke of the bending male die; the blanking male die is relatively fixed with the male die fixing plate and is in up-and-down guiding sliding fit with the bending male die; the female die is fixed on the lower die base and is arranged opposite to the bending male die up and down, and the female die is also provided with a matching hole matched with the blanking male die; the pipe clamp stamping die further comprises a spring for applying elastic force towards the female die to the bending male die, and the elastic force meets the requirement that the bending male die bends and forms a workpiece; the downward moving stroke of the upper die base is provided with a bending stroke for enabling the bending male die and the bending female die to finish bending the workpiece and a blanking stroke for blanking the workpiece after the bending stroke. The invention improves the processing efficiency of the workpiece.

Description

Pipe clamp stamping die
Technical Field
The invention relates to a pipe clamp stamping die.
Background
The stamping die is used for stamping forming and blanking separation of plates. According to the combination mode of the working procedures, the method can be divided into a single-working-procedure die, a compound die and a progressive die; according to different purposes and requirements, the die can be divided into a common die, a simple die, a high-precision die, a high-efficiency die, a long-life die and the like. The die is installed on a press machine, and the experimental stamping process is carried out. The stamping die is suitable for processing large-batch parts with complex shapes, and has the advantages of higher efficiency, lower cost and very long service life.
The common stamping die only has one station and can only complete one production process, and in order to improve the production efficiency, a plurality of stamping processes, such as two or more than two processes of blanking, bending, punching and edge cutting, can be designed on one stamping die. The application publication number CN106378348A is China invention patent application, which discloses a punching and bending die for an excavator pipe clamp, and the punching and bending die comprises an upper pressing plate and a base, wherein an upper bending die plate is detachably fixed in the middle of the upper pressing plate through an upper die plate fastening screw, a lower bending die plate is correspondingly detachably fixed in the middle of the base through a lower die plate fastening screw, punching female dies are arranged on two sides of the upper pressing plate, punching male dies are correspondingly arranged on the base, guide columns are arranged on two sides of the punching male dies, the upper portions of the guide columns are slidably connected with guide sleeves, and the guide sleeves are arranged on the upper pressing plate. When the punching and bending die for the pipe clamp of the excavator is used, the pipe clamping piece is placed between the upper pressing plate and the base, the pipe clamping piece is punched through the punching female die and the punching male die, then the upper bending die plate and the lower bending die plate are installed, and the pipe clamping piece with punched holes is prevented from being bent between the upper bending die plate and the lower bending die plate. Although the punching and bending die for the excavator pipe clamp can complete two processes of punching and bending, after the punching process is completed, the bending process can be carried out only by manually installing the upper bending die plate and the lower bending die plate, and the processing efficiency is still low when the pipe clamps are processed in batches.
Disclosure of Invention
The invention aims to provide a pipe clamp stamping die to solve the technical problem that the pipe clamp stamping die in the prior art is low in machining efficiency.
In order to achieve the purpose, the technical scheme of the pipe clamp stamping die is as follows:
pipe clamp stamping die includes:
an upper die holder;
a lower die holder;
the male die fixing plate is fixedly arranged on the upper die base;
the bending male die can move up and down relative to the male die fixing plate, an upper limit position and a lower limit position are arranged in the moving stroke of the bending male die, and a bending part matched with the pipe clamp to be processed in shape and size is further arranged on the bending male die;
the blanking male die is relatively fixed with the male die fixing plate and is in up-and-down guiding sliding fit with the bending male die;
the female die is fixed on the lower die base and is arranged opposite to the bending male die up and down, and the female die is provided with a concave part matched with the shape and the size of the clamping part of the pipe clamp to be processed and a blanking matching part matched with the blanking male die;
the spring is arranged between the upper die holder and the bending male die and used for applying elastic force towards the direction of the female die to the bending male die, and the elastic force meets the requirement that the bending male die bends and forms a workpiece;
the upper die base is provided with a bending die and a punching die, the bending die and the punching die are arranged on the upper die base, the punching die is arranged on the lower die base, the punching die is arranged on the upper die base, the bending die is arranged on the lower die base.
Has the advantages that: in the downward moving process of the upper die holder, the pipe clamp stamping die transmits pressure required by bending forming to the bending male die through the spring to enable the bending male die and the female die to bend the workpiece, and after the bending male die finishes the bending process of the workpiece, the bending male die keeps pressing the workpiece under the action of the spring, so that the workpiece is blanked through the blanking male die in the downward moving process of the lower die holder. The pipe clamp stamping die has continuity in the bending and blanking processes of the workpiece, can finish bending and blanking in one-time pressing stroke of the upper die base, and greatly improves the processing efficiency compared with the prior art.
Furthermore, at least one blanking male die is provided with a stop surface which is used for being matched with the bending male die in a stop mode to enable the bending male die to be located at the lower limit position.
Has the advantages that: the stop face can support the bending punch when matched with the blanking punch stop and can move simultaneously with the blanking punch when the bending punch is at the lower limit position.
Furthermore, at least one of the blanking male dies is a punching male die, at least one of the blanking male dies is an edge cutting male die, the bending male die is assembled on the edge cutting male die in a guiding and sliding mode, and the stopping surface is arranged on the edge cutting male die.
Has the advantages that: the blanking male die comprises at least one punching male die and at least one trimming male die, so that the upper die base can finish bending, punching and trimming in one-time pressing forming, and the processing efficiency is further improved.
Further, the bottom ends of the trimming male die and the punching male die are positioned on the same horizontal plane.
Has the advantages that: the pipe clamp stamping die is used for performing the edge cutting process on the workpiece while performing the punching process, so that the processing time is saved, and the processing efficiency is improved.
Further, the edge cutting male die is an annular die with a stepped hole, the bending male die is arranged in the stepped hole, and the stepped surface in the stepped hole forms the stopping surface.
Has the advantages that: the edge cutting male die is an annular die, the bending male die can be stopped at each circumferential position, the installation of the bending male die is facilitated, and meanwhile, the edge cutting male die can be matched with the bending male die in a guiding mode at each circumferential position.
Furthermore, the trimming male die and the upper die base are fixed through fixing screws, and the male die fixing plate is clamped between the trimming male die and the upper die base.
Has the advantages that: the male die fixing plate, the upper die base and the trimming male die can be fixed together through the fixing screws, an additional fixing structure is not required to be arranged to fix the male die fixing plate, and the structure is simple.
Furthermore, pipe clamp stamping die still includes relative die along the gliding flitch that props of upper and lower direction, prop the flitch with the relative setting from top to bottom of trimming terrace die for support the work piece and supply the work piece to cut off the unnecessary material limit that cuts off and drop and place.
Has the advantages that: prop the flitch and can support the work piece, make the precision that the work piece bent higher, simultaneously, prop the relative die of flitch and follow the direction slip from top to bottom, can supply the work piece to cut off the unnecessary material limit that cuts out and drop and place, avoid the trimming terrace die to move down the process and prop the flitch and will prop the flitch rupture through the work piece roof pressure.
Further, the pipe clamp stamping die further comprises an elastic piece which is located below the material supporting plate and applies upward elastic force to the material supporting plate.
Has the advantages that: the elastic part can guarantee that the material supporting plate can move along the direction of the upper direction and the lower direction relative to the die in a guiding mode, and the elastic part can reset the material supporting plate after the workpiece is cut so as to support the next workpiece.
Furthermore, the elastic part is a material supporting spring which is pressed between the material supporting plate and the female die, a guide part which drives the material supporting plate to slide up and down in a guiding manner is fixed on the material supporting plate or the female die, and the material supporting spring is sleeved on the guide part.
Has the advantages that: the elastic piece adopts a spring form, so that the assembly is convenient; the guide piece can ensure that the material supporting plate can move in the up-down direction without deflection.
Further, a top plate in abutting fit with the spring is arranged on the upper die base, the spring abuts between the upper die base and the top plate, the top plate is in guiding sliding fit with the upper die base along the vertical direction, an ejector rod for abutting against the bending male die is arranged at the lower portion of the top plate, the ejector rod penetrates through the upper die base and the male die fixing plate, and the ejector rod is in guiding sliding fit with the upper die base and/or the male die fixing plate.
Has the advantages that: the spring pushes the ejector rod to eject the bending male die through the ejecting plate so as to transmit elastic force to the bending male die, and the structure is simple and convenient to assemble.
Drawings
Fig. 1 is a schematic view of the pipe clamp stamping die of the present invention when the die is closed;
fig. 2 is a schematic view of the pipe clamp stamping die of the invention when the die is opened;
FIG. 3 is a top view of the trimming punch of the pipe clamp stamping die of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a schematic structural view of a pipe clamp to be processed by the pipe clamp stamping die according to the present invention;
fig. 6 is a top view of fig. 5.
Description of reference numerals: 1-upper die holder, 2-die shank, 3-top pressure spring, 4-top plate, 5-top rod, 6-first screw, 7-second screw, 8-positioning pin, 9-punch backing plate, 10-punch retainer, 11-punching punch, 12-bending punch, 13-trimming punch, 14-material supporting plate, 15-lower die holder, 16-material supporting spring, 17-material supporting screw, 18-die, 19-third screw, 20-guide pillar, 21-guide sleeve, 22-material stopping pin, 23-die blanking hole, 24-stop surface, 25-recess, 26-bending part, 27-clamping part, 28-fixing hole, 29-fixing part, 30-spring mounting hole, 31-screw connecting hole, 32-screw punching, 33-lower die holder blanking hole, 34-workpiece, 35-cutting edge, 36-connecting part, 37-edge cutting part and 38-stepped hole.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The specific embodiment of the pipe clamp stamping die comprises the following steps:
the pipe clamp stamping die is used for processing the pipe clamp shown in fig. 5 and 6, the pipe clamp comprises a clamping portion 27 and fixing portions 29, the clamping portion 27 is located in the middle of the clamping portion in an arched mode, the fixing portions 29 are connected to the two ends of the clamping portion 27, the clamping portion 27 and the fixing portions 29 are in arc transition connection, and fixing holes 28 used for connecting fasteners such as bolts and screws are formed in the fixing portions 29. In this embodiment, the width dimension of the original workpiece blank is equal to the width dimension of the required pipe clamp, and the length dimension is larger than the length dimension of the required pipe clamp, so in this embodiment, only the workpiece blank is cut in the length direction thereof.
The pipe clamp stamping die comprises an upper die holder 1 and a lower die holder 15, wherein a guide sleeve 21 is arranged on the upper die holder 1, a guide post 20 in guiding sliding fit with the guide sleeve 21 is arranged on the lower die holder 15, and the upper die holder 1 can move relative to the lower die holder 15 in the vertical direction through the guiding sliding fit of the guide post 20 and the guide sleeve 21.
The upper die holder 1 is provided with a die handle 2 used for being connected with a press machine, and the die handle 2 is fixed on the upper die holder 1 through a first screw 6. The bottom of the upper die base 1 is provided with a male die backing plate 9, the bottom of the male die backing plate 9 is provided with a male die fixing plate 10, and the male die fixing plate 10 is provided with a blanking male die. In this embodiment, the blanking male dies include a punching male die 11 and a trimming male die 13 fixed to the punch holder 10, bottom ends of the punching male die 11 and the trimming male die 13 are located on the same horizontal plane, and the punching male dies 11 are provided with two and are both arranged in bilateral symmetry about a central axis of the punch holder 10. The edge-cutting male die 13 is an integral annular die, as shown in fig. 3 and 4, a stepped hole 38 is formed in the middle of the edge-cutting male die, a large-diameter section of the stepped hole 38 is located above, a small-diameter section of the stepped hole 38 is located below, edge-cutting portions 37 for cutting redundant materials are respectively arranged on the left side and the right side of the edge-cutting male die 13, which are symmetrical with respect to the central axis of the stepped hole 38, and cutting blades 35 are arranged at the bottom of the edge-cutting portions 37; the trimming punch 13 further includes a connecting portion 36 connected to the trimming portion in the front-rear direction. The edge cutting part 37 is provided with an edge cutting male die threaded hole in threaded connection with the second screw 7, and the upper die holder 1, the male die backing plate 9 and the male die fixing plate 10 are provided with through holes for the second screw to pass through; the edge cutting part 37 is also provided with a positioning pin through hole for the positioning pin 8 to pass through, and the upper die holder 1, the male die backing plate 9 and the male die fixing plate 10 are also provided with a through hole for the positioning pin 8 to pass through. During specific installation, the trimming parts 37 are also arranged in bilateral symmetry about the central axis of the punch retainer 10, the trimming punch 13 is fixedly connected with the upper die holder 1, the punch backing plate 9 and the punch retainer 10 through the second screws 7, the trimming punch 13 is in abutting fit with the punch retainer 10, the positioning pin 8 simultaneously penetrates through the trimming punch 13, the upper die holder 1, the punch backing plate 9 and the punch retainer 10 to position the trimming punch 13, and the punch retainer 10 is clamped between the upper die holder 1 and the trimming punch 13. The trimming male die 13 is arranged far away from the central axis of the male die holder 10, and the punching male die 11 is arranged close to the central axis of the male die holder 10.
The pipe clamp stamping die further comprises a bending male die 12 arranged between the two edge cutting portions 37, a through hole for guiding the punching male die 11 to pass through is formed in the bending male die 12, the bending male die 12 is provided with a bending portion 26 matched with the shape and the size of the pipe clamp, the bending male die 12 is integrally hung on the edge cutting male die 13, and the position of the lowest point of the bending male die 12 is located below the edge cutting male die 13. Specifically, the bending punch 12 is mounted in a stepped hole 38 of the trimming punch 13, a stepped surface on the stepped hole forms a stopping surface 24 for stopping and matching with the bending punch 12, and the bending punch 12 can be guided and slidably matched with the trimming punch 13 in the up-down direction along the hole wall of the stepped hole. In addition, the bending male die 12 is in up-and-down guiding sliding fit with the punching male die 11, and the bending male die 12 is simultaneously in up-and-down guiding sliding fit with the trimming male die 13 and the punching male die 11, so that the up-and-down moving precision of the bending male die 12 is ensured, no guide part is required to be additionally arranged, and the structure of the die is simplified.
And a female die 18 matched with the bending male die 12 is fixedly connected to the lower die holder 15 through a third screw 19, and the female die 18 is provided with a concave part 25 matched with the shape and the size of a clamping part 27 of the pipe clamp. The female die 18 and the bending male die 12 are arranged opposite to each other up and down, and the concave portion 18 is located right below the bending portion 26. The female die 18 is provided with a matching hole matched with the punching male die 11, so that the workpiece can directly enter the matching hole when the punching male die 11 punches the workpiece; the female die 18 is also provided with a cutting edge matched with the edge cutting male die 13. The female die 18 is also provided with a female die blanking hole 23 which is coaxial with the matching hole, the aperture of the female die blanking hole 23 is larger than that of the matching hole, the lower die base 15 is provided with a lower die base blanking hole 33 which is coaxial with the matching hole, and the aperture of the lower die base blanking hole 33 is larger than that of the female die blanking hole 23. The sweeps generated when the punching male die 11 punches the workpiece can enter the blanking hole 33 of the lower die holder through the die blanking hole 23 and are discharged from the lower part of the lower die holder 15, so that the sweeps are prevented from being accumulated to influence the subsequent process.
An installation groove is formed in the upper die base 1 below the die handle 2, a top plate 4 is arranged in the installation groove, and the top plate 4 and the installation groove are in guiding sliding fit in the up-down direction. A top pressure spring 3 is arranged between the top plate 4 and the die handle 2, the top pressure spring 3 is a pressure spring, one end of the pressure spring is used for pushing the die handle 2, and the other end of the pressure spring is used for pushing the top plate 4, so that the top plate 4 is driven to vertically guide and slide relative to the upper die base 1. A top rod 5 is fixedly connected below the top plate 4, the top rod 5 extends in the vertical direction, and penetrates through the upper die base 1, the male die backing plate 9 and the male die fixing plate 10 to be in abutting contact with the bending male die 12. The jacking spring 3 jacks the top plate 4 to drive the ejector rod to jack the bending male die 12, so that elastic force towards the direction of the female die 18 is transmitted to the bending male die 12. When the bending punch moves up and down relative to the punch retainer 10, the bending punch has an upper limit position and a lower limit position in the moving stroke, wherein when the bending punch 12 is matched with the trimming punch 13 in a vertically stopping manner, the bending punch 12 is at the lower limit position, and in the embodiment, when the bending punch 12 is matched with the punch retainer 10 in a vertically stopping manner, the bending punch 12 is at the upper limit position, so that the jacking spring 3 is prevented from being excessively compressed.
The pipe clamp stamping die further comprises a material supporting plate 14, wherein the material supporting plate 14 is arranged below the edge cutting portion 37, and one end of the material supporting plate is attached to the outer peripheral surface of the female die 18. The part of the female die 18 below the material supporting plate 14 and the material supporting plate 14 are coaxially provided with spring mounting holes 30, and a material supporting spring 16 is arranged between the hole bottom walls of the two spring mounting holes 30. The part of the female die 18 below the material supporting plate 14 is also provided with a screw through hole 32 for guiding and moving the material supporting screw 17, and the screw through hole 32 is coaxial and communicated with the spring mounting hole 30. The bolt through hole 32 comprises a large-diameter section which is the same as the aperture of the spring mounting hole 30 and a small-diameter section which is positioned between the spring mounting hole 30 and the large-diameter section, the aperture of the large-diameter section of the bolt mounting hole is larger than the outer diameter of a nut of the material supporting bolt 17, the small-diameter section can be used for the material supporting bolt 17 to guide and pass through, and the material supporting spring 16 is sleeved on the material supporting bolt 17. The material supporting plate 14 is provided with a screw connecting hole 31 which is coaxially communicated with the spring mounting hole 30, the screw connecting hole 31 is in threaded fit with the material supporting screw 17, and the aperture of the screw connecting hole 31 is smaller than that of the spring mounting hole 30. When the workpiece 34 is placed on the female die, the material supporting plate 14 supports the part of the workpiece 34 extending out of the female die 18, and when the trimming male die 13 moves downwards to trim the workpiece 34, the material supporting plate 14 can be pressed downwards through the workpiece 34, under the action of the material supporting spring 16, the material supporting plate 14 can be prevented from being damaged when the trimming male die 13 presses the workpiece 34 downwards, and the material supporting screw 17 serves as a guide piece to ensure that the material supporting plate 14 can move upwards and downwards in a guiding mode. The excessive workpieces cut by the material supporting spring trimming male die 13 can fall on the material supporting plate 14 to be conveniently taken away manually. After the workpiece is machined, the material supporting plate 14 is reset under the action of the elastic force of the material supporting spring 16, so that the next workpiece to be machined is supported.
The working process of the pipe clamp stamping die is as follows: connecting the die shank 2 with a press machine, placing a workpiece 34 on the upper plane of the female die 18, and positioning and fixing the workpiece by using a material blocking pin 22, wherein initially, the bending male die 12 is positioned in a stepped hole of the trimming male die 13 and matched with a blocking surface 24 of the trimming male die 13 in a blocking manner, and the bending male die 12 is positioned at a lower limit position; starting a press machine, wherein the press machine drives the upper die holder 1 to move downwards; in the process that the upper die holder 1 moves downwards, the bending male die 12, the trimming male die 13 and the punching male die 11 move downwards simultaneously, the bending part 26 of the bending male die 12 firstly contacts with a workpiece to bend the workpiece, in the bending process, the jacking spring 3 is always in a compression state, in the compression state, the compression amount of the jacking spring 3 is kept unchanged, and the bending male die 12 is always in the lower limit position until the workpiece 34 is bent. When the workpiece 34 is bent, the lower ends of the trimming punch 13 and the piercing punch 11 are positioned above the workpiece 34 and the blanking and piercing of the workpiece 34 are started. The upper die holder 1 continues to move downwards, the jacking spring 3 continues to be compressed in the original compressed state, the bending male die 12 does not move any more, but the punching male die 11 and the trimming male die 13 continue to move downwards to respectively perform punching and trimming operations, and when the punching and trimming operations are finished, the jacking spring is in the maximum compression state. The scraps from the punching are discharged from the blanking holes, and the excess material cut off falls onto the retainer plate 14 and can be removed and cleaned by an operator.
The upper die holder 1 has a bending stroke for bending the workpiece 34 by the bending punch 12 and the die 18 in the whole downward moving stroke, the bending punch 12 keeps pressing the workpiece after the workpiece bending process is completed, and the upper die holder 1 also has a blanking stroke for punching and trimming the workpiece by the punching punch and the trimming punch in the downward moving stroke. In the blanking process, the jacking spring 3 is continuously compressed on the basis of the original compression, at the moment, the bending male die 12 is in up-and-down guiding sliding fit with the punching male die 11, and meanwhile, the bending male die 12 is in up-and-down guiding sliding fit with the trimming male die 13.
After the workpiece is machined and formed, opening the die, wherein in the die opening process, the upper die base 1 moves upwards to enable the punching male die 11, the trimming male die 13 and the bending male die 12 to move upwards, at the moment, the jacking spring 3 is stretched to drive the bending male die to move downwards to separate the machined and formed workpiece from the punching male die 11, so that the machined and formed workpiece of the dog falls into the female die 18, and the bending male die 12 and the trimming male die 13 are stopped and matched again.
In the above embodiments, the blanking punch includes two punching punches and one trimming punch, and in other embodiments, when the workpiece to be machined is appropriate in size and does not need trimming, only the punching punches may be provided.
In the above embodiment, the trimming male dies are integrated annular dies, and one trimming male die has two trimming portions, in other embodiments, the two trimming portions of the trimming male die can also be separately arranged, that is, one trimming male die is separately arranged on each of the left and right sides of the central axis of the male die holder, and one trimming male die has one trimming portion.
In the embodiment, in the bending process, the jacking spring is always in a compressed state, and the compression amount of the jacking spring is kept unchanged in the state, so that the bending male die is always in the lower limit position; in other embodiments, the bending male die may not be always located at the lower limit position of the bending male die in the bending process, when the bending male die contacts the workpiece, the compression amount of the top pressure spring is gradually changed and does not keep constant, so that the descending speed of the bending male die is lower than the descending speeds of the punching male die and the trimming male die, and at this time, the bending male die moves upward relative to the trimming male die, so that the final bending male die is not located at the lower limit position of the bending male die when the workpiece is bent.
In the above embodiments, the pressing spring transmits the elastic force to the bending male die through the top plate and the ejector rod, and in other embodiments, the pressing spring may be directly in pressing contact with the bending male die.
In the above embodiments, the bottom ends of the trimming male die and the punching male die are on the same horizontal plane, in other embodiments, the bottom ends of the trimming male die and the punching male die may not be on the same horizontal plane, and the trimming and punching processes are not performed at the same time.
In the above-mentioned embodiment, be equipped with in the below of cutting edge terrace die and prop the flitch in order to receive the unnecessary material that the terrace die of cutting edge was cut off, in other embodiments, also can not set up and prop the flitch, the unnecessary waste material that the terrace die of cutting edge was cut off this moment is direct to drop on the die, alright clear up through the manual work.
In the above-mentioned embodiment, prop the flitch and realize that relative die is along upper and lower direction guide movement through propping the material spring, in other embodiments, also can prop and set up one can realize propping the flitch relative die along upper and lower direction guide movement along the telescopic link of upper and lower direction between flitch and the die, prop the flitch this moment and need the manual work reset.

Claims (10)

1. A pipe clamp stamping die, comprising:
an upper die holder;
a lower die holder;
the male die fixing plate is fixedly arranged on the upper die base;
the bending male die can move up and down relative to the male die fixing plate, an upper limit position and a lower limit position are arranged in the moving stroke of the bending male die, and a bending part matched with the pipe clamp to be processed in shape and size is further arranged on the bending male die;
the blanking male die is relatively fixed with the male die fixing plate and is in up-and-down guiding sliding fit with the bending male die;
the female die is fixed on the lower die base and is arranged opposite to the bending male die up and down, and the female die is provided with a concave part matched with the shape and the size of the clamping part of the pipe clamp to be processed and a blanking matching part matched with the blanking male die;
the spring is arranged between the upper die holder and the bending male die and used for applying elastic force towards the direction of the female die to the bending male die, and the elastic force meets the requirement that the bending male die bends and forms a workpiece;
the upper die base is provided with a bending die and a punching die, the bending die and the punching die are arranged on the upper die base, the punching die is arranged on the lower die base, the punching die is arranged on the upper die base, the bending die is arranged on the lower die base.
2. Pipe clamp punching die according to claim 1, characterized in that at least one blanking punch is provided with a stop surface for cooperating with a bending punch stop for bringing the bending punch to a lower extreme position.
3. The pipe clamp stamping die of claim 2, wherein at least one of the blanking punches is a piercing punch and at least one is an edge punch, the bending punch is slidably guided on the edge punch, and the stop surface is provided on the edge punch.
4. The pipe clamp punching die according to claim 3, wherein the bottom ends of the trimming punch and the punching punch are on the same horizontal plane.
5. The pipe clamp stamping die according to claim 3, wherein the trimming punch is an annular die having a stepped hole, the bending punch is disposed in the stepped hole, and a stepped surface in the stepped hole forms the stop surface.
6. The pipe clamp stamping die according to claim 5, wherein the trimming male die and the upper die base are fixed by fixing screws, and the male die fixing plate is clamped between the trimming male die and the upper die base.
7. A pipe clamp stamping die according to any one of claims 2 to 5, further comprising a material supporting plate which is guided to slide in the up-down direction relative to the female die, wherein the material supporting plate is arranged opposite to the edge cutting male die in the up-down direction and is used for supporting a workpiece and allowing excess material cut from the workpiece to fall down.
8. A pipe clamp stamping die according to claim 7, further comprising an elastic member below the retainer plate for applying an upward elastic force to the retainer plate.
9. The pipe clamp stamping die according to claim 8, wherein the elastic member is a material supporting spring press-fitted between the material supporting plate and the female die, a guiding member for driving the material supporting plate to slide up and down is fixed on the material supporting plate or the female die, and the material supporting spring is sleeved on the guiding member.
10. The pipe clamp stamping die according to any one of claims 1 to 5, wherein the upper die base is provided with a top plate in press fit with the spring, the spring is pressed between the upper die base and the top plate, the top plate is in guide sliding fit with the upper die base in the up-down direction, the lower portion of the top plate is provided with a mandril for pressing the bending male die, the mandril penetrates through the upper die base and the male die fixing plate, and the mandril is in guide sliding fit with the upper die base and/or the male die fixing plate.
CN201910642080.3A 2019-07-16 2019-07-16 Pipe clamp stamping die Pending CN112238184A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113305197A (en) * 2021-05-31 2021-08-27 常耀方 Universal mechanical curved surface sheet metal part forming device and forming method thereof
CN114453891A (en) * 2022-01-13 2022-05-10 武汉轻工大学 Continuous forming die for binder clip
CN114453891B (en) * 2022-01-13 2022-11-01 武汉轻工大学 Continuous forming die for binder clip

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Publication number Priority date Publication date Assignee Title
EP0060355A1 (en) * 1981-03-17 1982-09-22 Edward Donald Bennett Apparatus for producing a blank from stock material
CN103121063A (en) * 2013-01-30 2013-05-29 华一精密机械(昆山)有限公司 Blanking composite die
CN104384298A (en) * 2014-11-25 2015-03-04 吴中区光福良盛机械厂 Blanking mold
CN204545136U (en) * 2015-02-16 2015-08-12 天津强和科技发展有限公司 A kind of compound flushing pressing mold
CN105880376A (en) * 2016-06-29 2016-08-24 苏州欧吉电子科技有限公司 Bending blanking mold

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060355A1 (en) * 1981-03-17 1982-09-22 Edward Donald Bennett Apparatus for producing a blank from stock material
CN103121063A (en) * 2013-01-30 2013-05-29 华一精密机械(昆山)有限公司 Blanking composite die
CN104384298A (en) * 2014-11-25 2015-03-04 吴中区光福良盛机械厂 Blanking mold
CN204545136U (en) * 2015-02-16 2015-08-12 天津强和科技发展有限公司 A kind of compound flushing pressing mold
CN105880376A (en) * 2016-06-29 2016-08-24 苏州欧吉电子科技有限公司 Bending blanking mold

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113305197A (en) * 2021-05-31 2021-08-27 常耀方 Universal mechanical curved surface sheet metal part forming device and forming method thereof
CN114453891A (en) * 2022-01-13 2022-05-10 武汉轻工大学 Continuous forming die for binder clip
CN114453891B (en) * 2022-01-13 2022-11-01 武汉轻工大学 Continuous forming die for binder clip

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