CN111822565B - Snake-shaped strip sheet part stamping die - Google Patents
Snake-shaped strip sheet part stamping die Download PDFInfo
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- CN111822565B CN111822565B CN202010699972.XA CN202010699972A CN111822565B CN 111822565 B CN111822565 B CN 111822565B CN 202010699972 A CN202010699972 A CN 202010699972A CN 111822565 B CN111822565 B CN 111822565B
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- hole
- rod
- clutch
- cutter head
- block
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- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 73
- 239000002699 waste material Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000004080 punching Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005530 etching Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
- B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/22—Auxiliary equipment, e.g. positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/06—Stripping-off devices
- B21D45/08—Stripping-off devices interrelated with motion of tool
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The serpentine strip sheet stamping die comprises a second hydraulic cylinder, an upper die holder, a lower die holder, an upper concave-convex die, a lower concave-convex die, a punching cutter head and two first hydraulic cylinders; the lower concave-convex die is connected with the upper surface of the lower die holder, a vertically penetrating forming hole is formed in the lower concave-convex die, and a snake-shaped strip supporting block is arranged in the forming hole; the serpentine strip supporting block separates the forming hole into a first material waste hole and a second material waste hole. The upper concave-convex die is connected with the lower surface of the upper die holder, and the upper surface of the upper die holder is connected with two first hydraulic cylinders; the punching tool bit comprises a tool bar, a first tool bit and a second tool bit; one end of the cutter bar is connected with the first cutter head and the second cutter head, and the other end of the cutter bar passes through the cutter bar feeding hole to be connected with the second hydraulic cylinder; the first cutter head penetrates through the first cutter head hole and corresponds to the first waste material hole. The second cutter head penetrates through the second cutter head hole and corresponds to the second waste material hole. The serpentine strip sheet part stamping die has the advantages of greatly improved efficiency, reduced cost, novel shape, economy, practicability and stable structure.
Description
Technical Field
The invention relates to the technical field of die manufacturing, in particular to a serpentine strip sheet stamping die.
Background
With the continuous development of modern science and technology, the machining requirements on workpieces in the machining industry are higher and higher, and the technical means are continuously developed towards the requirements of high precision and high quality. In particular, the processing of the sheet-like parts which have poor rigidity and are easy to deform has high technical requirements. If the thin sheet has a complex shape, the processing difficulty of the thin sheet rises linearly, in the prior art, for thin sheet parts with the wall thickness below 1mm and complex shape, an etching process is generally adopted to ensure the flatness, so that the cost is high and the efficiency is low.
Disclosure of Invention
Aiming at the defects in the prior art, the serpentine strip sheet stamping die provided by the invention is convenient to operate and can improve the efficiency and reduce the cost.
The invention provides a serpentine strip sheet stamping die which comprises a second hydraulic cylinder, an upper die holder, a lower die holder, an upper concave-convex die, a lower concave-convex die, a punching cutter head and two first hydraulic cylinders;
the lower concave-convex die is connected with the upper surface of the lower die holder, and the lower surface of the lower die holder is connected with four support columns; the concave-convex die is provided with a vertically penetrating forming hole, and a snake-shaped strip supporting block is arranged in the forming hole; the serpentine strip supporting block divides the forming hole into a first material waste hole and a second material waste hole;
The upper concave-convex die is connected with the lower surface of the upper die holder, and the upper surface of the upper die holder is connected with piston rods of the two first hydraulic cylinders; a first tool bit hole and a second tool bit hole which vertically penetrate are respectively formed in the upper concave-convex die and correspond to the first material waste hole and the second material waste hole, and a tool bar feeding hole is formed in the upper die holder and corresponds to the first tool bit hole and the second tool bit hole;
The punching tool bit comprises a tool bar, a first tool bit and a second tool bit; one end of the cutter bar is connected with the first cutter head and the second cutter head, and the other end of the cutter bar penetrates through the cutter bar feeding hole to be connected with a piston rod of the second hydraulic cylinder; the cutter bar is in clearance fit with the cutter bar feeding hole; the first cutter head penetrates through the first cutter head hole to correspond to the first waste material hole, and the first cutter head is in clearance fit with the first cutter head hole; the second cutter head penetrates through the second cutter head hole to correspond to the second waste material hole, and the second cutter head is in clearance fit with the second cutter head hole.
According to the serpentine strip sheet part stamping die, the upper concave-convex die and the lower concave-convex die are matched to form the serpentine part, after stamping is completed, the second hydraulic cylinder drives the cutter bar, and the first cutter head and the second cutter head are driven by the cutter bar to be far away from the concave-convex die; the upper relief mould is still in contact with the lower relief mould at this time.
Preferably, the device further comprises a support slide block and a support seat;
A through supporting and arranging hole is formed in the lower die holder corresponding to the forming hole; the supporting seat is connected with four supporting columns; the supporting seat is provided with a positioning tooth slot; a positioning latch matched with the positioning tooth slot is arranged at one end of the supporting slide block, the other end of the supporting slide block passes through the supporting and placing hole to prop against the lower surface of the serpentine strip supporting block, and the supporting slide block divides the supporting and placing hole into a first blanking hole and a second blanking hole; the first blanking hole corresponds to the first material waste hole, and the second blanking hole corresponds to the second material waste hole.
Preferably, the concave-convex die is provided with two placement grooves, and the placement grooves are communicated with the forming holes; the two placement grooves are symmetrically arranged relative to the serpentine strip supporting blocks;
The two placement grooves are internally provided with discharging mechanisms; the discharging mechanism comprises a linkage assembly, a clutch assembly and a discharging contact assembly; the linkage assembly comprises a positioning square column, a linkage square column and a ratchet block;
the linkage square column is vertically arranged in the placement groove; one end of the linkage square column is provided with a positioning square hole with the same central line; one end of the positioning square column is connected with the bottom surface of the placement groove, and the other end of the positioning square column is in clearance fit with the positioning square hole; the periphery of the positioning square column is sleeved with a first spring; one end of the first spring is propped against the bottom surface of the placement groove, and the other end of the first spring is propped against one end of the linkage square column; the linkage square column is connected with the ratchet block by one side surface of the serpentine strip supporting block;
The ratchet block is connected with the clutch assembly, the clutch assembly is connected with the unloading contact assembly, and the clutch assembly is used for converting the reciprocating motion of the linkage square column into the intermittent motion of the unloading contact assembly; the discharging contact assembly is used for assisting in separating waste after one-stroke stamping.
Preferably, the clutch assembly comprises a guide rod and a clutch rod;
Two ends of the guide rod are respectively connected with two side walls of the placement groove through connecting rods; the guide rod is positioned between the linkage square column and the serpentine strip supporting block, and is parallel to the linkage square column; one end of the clutch rod is matched with the ratchet block, and the other end of the clutch rod is connected with the unloading contact assembly; the discharging contact assembly is positioned between the clutch assembly and the serpentine strip supporting block;
The clutch rod is provided with a clutch through hole along the radial direction of the clutch rod, and the clutch through hole is vertically arranged; one end of the guide rod, which is close to the bottom of the placement groove, passes through the clutch through hole; the guide rod and the clutch through hole are arranged eccentrically relatively, and the guide rod is attached to the inner wall of the clutch through hole at one side of the serpentine supporting block; the clutch rod can slide horizontally;
the guide rod comprises a first guide rod and a second guide rod which are connected, and the first guide rod is positioned below the second guide rod; the cross-sectional dimension of the second guide rod is greater than the cross-sectional dimension of the first guide rod; and one side slope of the backrest snakelike strip supporting block at the joint of the first guide rod and the second guide rod is in transition.
Preferably, the unloading contact assembly comprises a fixed sleeve, a second spring, a third spring, a sliding rail rod, a sliding sleeve, a gear and a rotating disc;
The sliding rail rod is vertically arranged in the placement groove, two ends of the sliding rail rod are respectively connected with two side walls of the placement groove through connecting shafts, and two limiting discs with the same central shaft are arranged on the sliding rail rod; the sliding sleeve is sleeved on the sliding rail rod and is positioned between the two limiting discs; the second spring is sleeved on the sliding rail rod, one end of the second spring abuts against the upper end face of the sliding sleeve, and the other end of the second spring abuts against the limiting disc on the upper portion of the sliding rail rod; the outer side wall of the sliding sleeve is connected with one end of the fixed sleeve, and the other end of the fixed sleeve is provided with a limiting ring which contracts inwards; one end of the clutch lever far-ratchet block penetrates through the limiting ring, one end of the clutch lever far-ratchet block is provided with a limiting block with a coaxial central line, the limiting block is movably matched in the fixed sleeve, and the limiting block abuts against the limiting ring; the third spring is arranged in the fixed sleeve, one end of the third spring abuts against the outer wall of the sliding sleeve, and the other end of the third spring abuts against the limiting block;
One side, close to the serpentine supporting block, of the outer wall of the sliding sleeve is connected with a rack which is vertically arranged; the gear and the rotating disc are connected through a connecting rod with the center line in the same axial direction, and two ends of the connecting rod are rotationally connected with two side walls of the placement groove; the gear and the rotating disc are both positioned between the sliding sleeve and the serpentine strip supporting block; the gear is meshed with the rack, and the periphery of the rotating disc is connected with a discharging contact rod; the positioning groove is provided with a relief hole corresponding to the forming hole; when the discharging contact rod rotates around the center of the rotating disc, one end of the discharging contact rod, which is far away from the rotating disc, passes through the inner cavity of the forming hole.
Preferably, the support mounting hole is a tapered hole.
Preferably, the width of one end of the supporting slide block far away from the positioning latch is smaller than the width of the serpentine strip supporting block.
Preferably, four guide holes are uniformly distributed on the concave-convex die, and four guide columns are arranged on the upper concave-convex die corresponding to the four guide holes.
The invention has the beneficial effects that:
According to the technical scheme, the serpentine strip sheet stamping die provided by the invention ensures the planeness of the serpentine piece in a mode that the cutter head is separated firstly during stamping and then separated after being arranged on the concave-convex die; the device is capable of realizing continuous production by additionally arranging the unloading mechanism under the condition that the supporting blocks of the serpentine supporting blocks are easy to punch and fracture, and is higher in efficiency, lower in cost, novel in model, economical and practical and stable in structure compared with the traditional etching process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a stamping die for serpentine strip sheet members according to an embodiment of the present invention;
FIG. 2 is a bottom plan view of the serpentine strip sheet stamping die shown in FIG. 1;
FIG. 3 is a schematic diagram of a linkage assembly of the serpentine strip sheet stamping die shown in FIG. 1;
FIG. 4 is a schematic view of a clutch assembly of the serpentine strip sheet stamping die of FIG. 1;
fig. 5 is a schematic view of a discharge contact assembly of the serpentine strip sheet stamping die shown in fig. 1.
Reference numerals:
11-a first hydraulic cylinder; 12-a second hydraulic cylinder; 13-an upper die holder; 14-a lower die holder; 141-a support mounting hole; 15-supporting columns;
2-upper concave-convex mould; 23-guiding columns;
3-a concave-convex die; 31-forming holes; 311-a first scrap hole; 312-second scrap hole; 32-serpentine strip support blocks; 33-a placement groove; 34-a guide hole;
4-punching a cutter head; 41-knife bar; 42-first cutter head; 43-second cutter head;
5-supporting a slider; 51-positioning latch teeth;
6, a supporting seat; 61-positioning tooth sockets;
7-a discharging mechanism;
71-linkage assembly; 711-positioning square columns; 712-linkage square column; 712 a-positioning square holes; 713-ratchet block; 714—a first spring;
72-a clutch assembly; 721-guide bar; 721 a-first guide bar; 721 b-a second guide bar; 722—clutch lever; 722a—clutch through hole; 722 b-stopper;
73-a discharge contact assembly; 731-a stationary sleeve; 731 a-a limit ring; 732-a second spring; 733-a third spring; 734-slide rail rod; 734 a-limit disks; 735—sliding sleeve; 736-a gear; 737-rotating disks; 738-a rack; 739-discharge contact lever.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.
Fig. 1 to 5 are diagrams showing a serpentine strip sheet stamping die according to an embodiment of the present invention, which includes a second hydraulic cylinder 12, an upper die holder 13, a lower die holder 14, an upper concave-convex die 2, a lower concave-convex die 3, a punching head 4, and two first hydraulic cylinders 11.
The lower concave-convex die 3 is connected with a lower die holder 14, and one side of the lower die holder 14 back to the lower concave-convex die 3 is connected with four support columns 15; the lower concave-convex mould 3 is provided with a vertically penetrating forming hole 31, and a snake-shaped strip supporting block is arranged in the forming hole 31. The serpentine supporting block divides the molding hole 31 into a first material waste hole 311 and a second material waste hole 312, and the upper surface of the serpentine supporting block is flush with the upper surface of the lower concave-convex mold 3.
The upper concave-convex die 2 is connected with an upper die holder 13, and one side of the upper die holder 13, which is back to the upper concave-convex die 2, is connected with a piston rod of a first hydraulic cylinder 11. The upper concave-convex die 2 is provided with a first tool bit hole and a second tool bit hole which vertically penetrate through the first concave-convex die 2 corresponding to the first material waste hole 311 and the second material waste hole 312 respectively, and the upper die holder 13 is provided with a cutter bar feeding hole corresponding to the first tool bit hole and the second tool bit hole. The punching bit 4 comprises a cutter bar 41, a first bit 42 and a second bit 43. One end of the cutter bar 41 is connected with the first cutter head 42 and the second cutter head 43, and the other end of the cutter bar 41 passes through the cutter bar feeding hole to be connected with a piston rod of the second hydraulic cylinder 12. The cutter bar 41 is in clearance fit with the cutter bar feeding hole; the first cutter head 42 penetrates through the first cutter head hole to correspond to the first waste material hole 311, and the first cutter head 42 is in clearance fit with the first cutter head hole; the second cutter head 43 penetrates through the second cutter head hole to correspond to the second waste material hole 312, and the second cutter head 43 is in clearance fit with the second cutter head hole.
The serpentine strip sheet stamping die provided by the embodiment is further provided with a frame, and the first hydraulic cylinder 11 and the second hydraulic cylinder 12 are fixedly arranged on the frame as power sources.
When in operation, the device comprises: first, the sheet blank is prevented from being above the forming hole 31, and the second hydraulic cylinder 12 pushes the cutter bar 41 in the cutter bar feed hole. The cutter bar 41 drives the first cutter head 42 and the second cutter head 43 connected with the cutter bar to slide downwards relative to the upper concave-convex die 2; at this time, the first hydraulic cylinder 11 drives the upper concave-convex die 2 to approach the lower concave-convex die 3, and the first cutter head 42 and the second cutter head 43 are inserted into the first waste material hole 311 and the second waste material hole 312, so as to complete the punching process. Then, the first hydraulic cylinder 11 drives the first cutter head 42 and the second cutter head 43 to retract, the upper concave-convex die 2 continues to be covered on the work piece on the serpentine supporting block 32 until the first cutter head 42 and the second cutter head 43 are separated from the range of the lower concave-convex die 3, the first hydraulic cylinder 11 drives the upper concave-convex die 2 to leave the lower concave-convex die 3, and the whole stamping process is completed.
In the prior art, the etching process is adopted to process the thin slice serpentine part, and the reason is that the stamping is difficult, and the difficulty is mainly that the flatness of the thin slice part is ensured, and the embodiment is verified by multiple experiments, wherein the two sides of the serpentine part are stamped at the same time, namely, the first cutter head 42 and the second cutter head 43 are stamped at the same time; the single-side stamping, namely the deformation of the workpiece caused by the single-side extrusion of one tool bit to the workpiece after the end of the stamping, can be effectively reduced. In addition, when the first cutter head 42 and the second cutter head 43 retract, the outer edges of the punched parts are inevitably scraped and bumped; the first tool bit 42 and the second tool bit 43 are retracted first, and the operation of pressing the upper punch 2 onto the work can be continued, so that the deformation amount of the work can be reduced.
Further, the device also comprises a supporting slide block 5 and a supporting seat 6; the lower die holder 14 is provided with a support placement hole 141 which penetrates through the lower die holder at a position corresponding to the forming hole 31; the supporting seat 6 is connected with four supporting columns 15; the supporting seat 6 is provided with a positioning tooth slot 61. One end of the supporting slide block 5 is provided with a positioning latch 51 which is matched with the positioning tooth slot 61, the other end of the supporting slide block 5 passes through the supporting and placing hole 141 to prop against the lower surface of the serpentine strip supporting block 32, and the supporting slide block 5 separates the supporting and placing hole 141 into a first blanking hole and a second blanking hole; the first blanking hole corresponds to the first material waste hole 311, and the second blanking hole corresponds to the second material waste hole 312.
The serpentine sheet member stamping die provided in this embodiment is generally manufactured by an etching process, and the serpentine member is generally between 0.2mm and 1mm in thickness and between 0.7mm and 2mm in width; the serpentine support block 32 corresponding to the serpentine is small in size, and the serpentine support block 32 is extremely easily broken or deformed under continuous stamping by the stamping die, so that continuous production cannot be performed. A supporting and placing hole 141 is formed in the lower die holder 14 corresponding to the forming hole 31, a supporting sliding block 5 is arranged in the supporting and placing hole 141, the supporting sliding block 5 supports the serpentine supporting block 32, the condition that the serpentine supporting block 32 is easy to break or deform is greatly improved, the length direction of a positioning tooth slot 61 on the supporting seat 6 is the same as the length direction of the serpentine supporting block 32, and the positioning tooth slot 61 of the supporting sliding block 5 slides and is positioned along the positioning tooth slot 61 of the supporting seat 6; after the supporting slide block 5 is positioned, the contact surface of the supporting slide block 5 and the serpentine supporting block 32 is symmetrically arranged relative to the serpentine supporting block 32, namely, the supporting slide block 5 equally divides the supporting and arranging hole 141 into a first blanking hole and a second blanking hole, waste in the first material waste hole 311 can be separated from the die through the first blanking hole, and waste in the second material waste hole 312 can be separated from the die through the second blanking hole.
In detail, two placement grooves 33 are formed on the concave-convex mold 3; the two placement grooves 33 are symmetrically arranged relative to the serpentine strip supporting block, and the placement grooves 33 are communicated with the forming holes; the two placement grooves 33 are internally provided with a discharging mechanism 7; the discharging mechanism 7 comprises a linkage assembly 71, a clutch assembly 72 and a discharging contact assembly 73; the linkage assembly 71 includes a positioning square post 711, a linkage square post 712, and a ratchet block 713.
The linkage square column 712 is vertically arranged in the placement groove 33; one end of the linkage square column 712 is provided with a positioning square hole 712a with the same center line; one end of the positioning square column 711 is connected to the bottom surface of the placement groove 33, and the other end of the positioning square column 711 is clearance-fitted to the positioning square hole 712 a. The outer periphery of the positioning square column 711 is sleeved with a first spring 714; one end of the first spring 714 is abutted against the bottom surface of the mounting groove 33, and the other end of the first spring 714 is abutted against one end of the linkage square column 712; the linkage square column 712 is connected to the ratchet block 713 by a side of the serpentine bar support block.
The ratchet block 713 is connected with the clutch assembly 72, the clutch assembly 72 is connected with the unloading contact assembly 73, and the clutch assembly 72 is used for converting the reciprocating motion of the linkage square column 712 into the intermittent motion of the unloading contact assembly 73; the discharge contact assembly 73 is used to assist in the release of the punched scrap.
In the serpentine strip sheet stamping die provided by the embodiment, when the upper concave-convex die 2 approaches the lower concave-convex die 3, the upper concave-convex die 2 is firstly propped against one end of the far positioning square column 711 of the linkage square column 712, the linkage square column 712 moves downwards under the driving of the upper concave-convex die 2, and the linkage square column 712 slides downwards along the positioning square column 711 so as to compress the first spring 714; the linkage square column 712 is connected to the ratchet block 713 by one side of the serpentine bar support block 32.
Specifically, the clutch assembly 72 includes a guide lever 721 and a clutch lever 722; both ends of the guide lever 721 are connected to both side walls of the seating groove 33 through connecting rods, respectively; the guide rod 721 is positioned between the linkage square column 712 and the serpentine strip support block 32. The guide rod 721 is parallel to the linkage square column 712; one end of the clutch lever 722 is matched with the ratchet block 713, and the other end of the clutch lever 722 is connected with the unloading contact component 73; the discharge contact assembly 73 is located between the clutch assembly 72 and the serpentine strip support block 32. The clutch lever 722 is provided with a clutch through hole 722a along the radial direction, and the clutch through hole 722a is vertically arranged; one end of the guide lever 721 near the bottom of the seating groove 33 passes through the clutch through hole 722a; the guide lever 721 is eccentrically disposed with respect to the clutch through hole 722a, and the guide lever 721 is fitted to the inner wall of the clutch through hole 722a on the side of the serpentine support block 32.
The guide rod 721 includes a first guide rod 712a and a second guide rod 721b connected to each other, and the first guide rod 712a is located below the second guide rod 721 b; the cross-sectional dimension of the second guide 721b is greater than the cross-sectional dimension of the first guide 712 a; a side slope of the back serpentine strip support block 32 where the first guide rod 712a connects with the second guide rod 721 b.
In the serpentine strip sheet stamping die provided by the embodiment, when the linkage square rod moves downwards, the ratchet block 713 connected with the outer wall of the linkage square rod moves downwards synchronously; the ratchet block 713 is propped against the clutch rod 722 when moving downwards through the clutch rod 722, the propped surface of the ratchet block and the clutch rod 722 is an inclined surface, and the clutch rod 722 can slide horizontally, so that the clutch rod 722 slides horizontally to yield, and when the clutch rod 722 yields horizontally, the inner wall of the clutch through hole 722a of the clutch rod 722 is attached to the guide rod 721 on one side of the linkage square rod; the ratchet block 713 continues to descend. When the upper concave-convex die 2 is far away from the lower concave-convex die 3, the linkage square column 712 rises under the action of the first spring 714, the ratchet block 713 abuts against the clutch lever 722 when rising along with the linkage square column 712, and the abutting surface of the ratchet block 713 and the clutch lever 722 is a plane; at this time, the clutch lever 722 is forced upward, and then moves upward, and when the clutch lever 722 is lifted to the position of the second guide rod 721b, the clutch lever 722 is far away from the linkage square rod under the slope of the transition section of the first guide rod 712a and the second guide rod 721b, and the clutch lever 722 is separated from the ratchet block 713.
Also, the discharge contact assembly 73 includes a fixed sleeve 731, a second spring 732, a third spring 733, a slide rail 734, a sliding sleeve 735, a gear 736, and a rotating disk 737; the slide rail rod 734 is vertically arranged in the mounting groove 33, two ends of the slide rail rod 734 are respectively connected with two side walls of the mounting groove 33 through connecting shafts, and two limiting disks 734a with the same central shaft are arranged on the slide rail rod 734. The sliding sleeve 735 is sleeved on the sliding rail 734, and the sliding sleeve 735 is positioned between the two limiting disks 734 a; the second spring 732 is sleeved on the sliding rail 734, one end of the second spring 732 abuts against the upper end surface of the sliding sleeve 735, and the other end of the second spring 732 abuts against the limit disc 734a on the upper portion of the sliding rail 734. The outer side wall of the sliding sleeve 735 is connected with one end of a fixed sleeve 731, and the other end of the fixed sleeve 731 is provided with a limiting ring 731a which contracts inwards; one end of the far ratchet block 713 of the clutch lever 722 passes through the limiting ring 731a, one end of the far ratchet block 713 of the clutch lever 722 is provided with a limiting block 722b which is coaxial with the central line, the limiting block 722b is movably matched in the fixed sleeve 731, and the limiting block 722b is propped against the limiting ring 731a; the third spring 733 is disposed in the fixed sleeve 731, one end of the third spring 733 abuts against an outer wall of the sliding sleeve 735, and the other end of the third spring 733 abuts against the stopper 722 b.
The outer wall of the sliding sleeve 735 is connected with a rack 738 which is vertically arranged on one side of the serpentine strip supporting block 32; the gear 736 and the rotating disk 737 are connected through a connecting rod coaxially arranged to the center line, and both ends of the connecting rod are rotatably connected to both side walls of the mounting groove 33; both the gear 736 and the rotating disk 737 are located between the sliding sleeve 735 and the serpentine strip support block 32; the gear 736 is meshed with the rack 738, and a discharging contact rod 739 is connected to the periphery of the rotating disc 737; the positioning groove 33 is provided with a relief hole corresponding to the forming hole 31; when the discharge contact lever 739 rotates about the center of the rotating disk 737, one end of the discharge contact lever 739, which is far from the rotating disk 737, passes through the inner cavity of the forming hole 31.
In the serpentine strip sheet stamping die provided by the embodiment, the movement of the clutch rod 722 drives the sliding sleeve 735 to move, the rack 738 on the sliding sleeve 735 vertically moves, the gear 736 meshed with the rack 738 rotates, the rotating disc 737 and the gear 736 are coaxially and axially connected to the two side walls of the mounting groove 33 in a rotating way, the rotation of the gear 736 drives the rotating disc 737 to rotate, the discharging contact rod 739 connected with the periphery of the rotating disc 737 rotates around the circle center of the rotating disc 737, the discharging contact rod 739 passes through the yielding hole formed in the inner wall of the mounting groove 33, an inner cavity of the forming hole 31 can be formed when the discharging contact rod 739 rotates, the first spring 714 is compressed by the upper concave-convex die 2 in a descending way when stamping, the whole device is not moved, and the first ground spring stores energy; when the upper concave-convex die 2 is far away from the lower concave-convex die 3, the first spring 714 starts to release energy, and the discharging contact rod 739 rotates to be over the waste materials in the forming hole 31 through the abdication Kong Paida, so that the waste materials are beaten off; when the upper concave-convex die 2 is far away from the lower concave-convex die 3 to a certain position, the ratchet block 713 is separated from the clutch lever 722, and the discharging contact lever 739 is completely flapped at this time, the sliding sleeve 735 quickly falls back under the action of the second spring 732 and gravity, and the discharging contact lever 739 quickly rotates back to the initial position.
Also, the support settling holes 141 are tapered holes to effectively increase the effect of the scrap settling along the support and separating from the mold.
In order to better remove the scrap material from the molding holes 31 and the support mounting holes 141, the width of the end of the support slider 5 distal to the positioning latch 51 is smaller than the width of the serpentine strip support block 32.
In addition, be equipped with four equipartition guiding holes 34 on the concave-convex mould 3, upward be equipped with four guide posts 23 on concave-convex mould 2 corresponding four guiding holes 34, can effectively improve stamping accuracy.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (6)
1. The serpentine strip sheet stamping die is characterized by comprising a second hydraulic cylinder, an upper die holder, a lower die holder, an upper concave-convex die, a lower concave-convex die, a punching cutter head and two first hydraulic cylinders;
the lower concave-convex die is connected with the upper surface of the lower die holder, and the lower surface of the lower die holder is connected with four support columns; the concave-convex die is provided with a vertically penetrating forming hole, and a snake-shaped strip supporting block is arranged in the forming hole; the serpentine strip supporting block divides the forming hole into a first material waste hole and a second material waste hole;
The upper concave-convex die is connected with the lower surface of the upper die holder, and the upper surface of the upper die holder is connected with piston rods of the two first hydraulic cylinders; a first tool bit hole and a second tool bit hole which vertically penetrate are respectively formed in the upper concave-convex die and correspond to the first material waste hole and the second material waste hole, and a tool bar feeding hole is formed in the upper die holder and corresponds to the first tool bit hole and the second tool bit hole;
The punching tool bit comprises a tool bar, a first tool bit and a second tool bit; one end of the cutter bar is connected with the first cutter head and the second cutter head, and the other end of the cutter bar penetrates through the cutter bar feeding hole to be connected with a piston rod of the second hydraulic cylinder; the cutter bar is in clearance fit with the cutter bar feeding hole; the first cutter head penetrates through the first cutter head hole to correspond to the first waste material hole, and the first cutter head is in clearance fit with the first cutter head hole; the second cutter head penetrates through the second cutter head hole to correspond to the second waste material hole, and the second cutter head is in clearance fit with the second cutter head hole;
The device also comprises a supporting slide block and a supporting seat;
a through supporting and arranging hole is formed in the lower die holder corresponding to the forming hole; the supporting seat is connected with four supporting columns; the supporting seat is provided with a positioning tooth slot; a positioning latch matched with the positioning tooth slot is arranged at one end of the supporting slide block, the other end of the supporting slide block passes through the supporting and placing hole to prop against the lower surface of the serpentine strip supporting block, and the supporting slide block divides the supporting and placing hole into a first blanking hole and a second blanking hole; the first blanking hole corresponds to the first material waste hole, and the second blanking hole corresponds to the second material waste hole;
Two placement grooves are formed in the concave-convex die, and the mounting grooves are communicated with the forming holes; the two placement grooves are symmetrically arranged relative to the serpentine strip supporting blocks;
The two placement grooves are internally provided with discharging mechanisms; the discharging mechanism comprises a linkage assembly, a clutch assembly and a discharging contact assembly; the linkage assembly comprises a positioning square column, a linkage square column and a ratchet block;
the linkage square column is vertically arranged in the placement groove; one end of the linkage square column is provided with a positioning square hole with the same central line; one end of the positioning square column is connected with the bottom surface of the placement groove, and the other end of the positioning square column is in clearance fit with the positioning square hole; the periphery of the positioning square column is sleeved with a first spring; one end of the first spring is propped against the bottom surface of the placement groove, and the other end of the first spring is propped against one end of the linkage square column; the linkage square column is connected with the ratchet block by one side surface of the serpentine strip supporting block;
The ratchet block is connected with the clutch assembly, the clutch assembly is connected with the unloading contact assembly, and the clutch assembly is used for converting the reciprocating motion of the linkage square column into the intermittent motion of the unloading contact assembly; the discharging contact assembly is used for assisting in separating waste after one-stroke stamping.
2. The serpentine strip sheet stamping die of claim 1 wherein: the clutch assembly comprises a guide rod and a clutch rod;
Two ends of the guide rod are respectively connected with two side walls of the placement groove through connecting rods; the guide rod is positioned between the linkage square column and the serpentine strip supporting block, and is parallel to the linkage square column; one end of the clutch rod is matched with the ratchet block, and the other end of the clutch rod is connected with the unloading contact assembly; the discharging contact assembly is positioned between the clutch assembly and the serpentine strip supporting block;
The clutch rod is provided with a clutch through hole along the radial direction of the clutch rod, and the clutch through hole is vertically arranged; one end of the guide rod, which is close to the bottom of the placement groove, passes through the clutch through hole; the guide rod and the clutch through hole are arranged eccentrically relatively, and the guide rod is attached to the inner wall of the clutch through hole at one side of the serpentine supporting block; the clutch rod can slide horizontally;
the guide rod comprises a first guide rod and a second guide rod which are connected, and the first guide rod is positioned below the second guide rod; the cross-sectional dimension of the second guide rod is greater than the cross-sectional dimension of the first guide rod; and one side slope of the backrest snakelike strip supporting block at the joint of the first guide rod and the second guide rod is in transition.
3. The serpentine strip sheet stamping die of claim 2 wherein: the unloading contact assembly comprises a fixed sleeve, a second spring, a third spring, a sliding rail rod, a sliding sleeve, a gear and a rotating disc;
The sliding rail rod is vertically arranged in the placement groove, two ends of the sliding rail rod are respectively connected with two side walls of the placement groove through connecting shafts, and two limiting discs with the same central shaft are arranged on the sliding rail rod; the sliding sleeve is sleeved on the sliding rail rod and is positioned between the two limiting discs; the second spring is sleeved on the sliding rail rod, one end of the second spring abuts against the upper end face of the sliding sleeve, and the other end of the second spring abuts against the limiting disc on the upper portion of the sliding rail rod; the outer side wall of the sliding sleeve is connected with one end of the fixed sleeve, and the other end of the fixed sleeve is provided with a limiting ring which contracts inwards; one end of the clutch lever far-ratchet block penetrates through the limiting ring, one end of the clutch lever far-ratchet block is provided with a limiting block with a coaxial central line, the limiting block is movably matched in the fixed sleeve, and the limiting block abuts against the limiting ring; the third spring is arranged in the fixed sleeve, one end of the third spring abuts against the outer wall of the sliding sleeve, and the other end of the third spring abuts against the limiting block;
One side, close to the serpentine supporting block, of the outer wall of the sliding sleeve is connected with a rack which is vertically arranged; the gear and the rotating disc are connected through a connecting rod with the center line in the same axial direction, and two ends of the connecting rod are rotationally connected with two side walls of the placement groove; the gear and the rotating disc are both positioned between the sliding sleeve and the serpentine strip supporting block; the gear is meshed with the rack, and the periphery of the rotating disc is connected with a discharging contact rod; the positioning groove is provided with a relief hole corresponding to the forming hole; when the discharging contact rod rotates around the center of the rotating disc, one end of the discharging contact rod, which is far away from the rotating disc, passes through the inner cavity of the forming hole.
4. The serpentine strip sheet stamping die of claim 1 wherein: the support mounting holes are tapered holes.
5. The serpentine strip sheet stamping die of claim 1 wherein: the width of the end of the support slider far away from the positioning latch is smaller than that of the serpentine strip support block.
6. The serpentine strip sheet stamping die of claim 1 wherein: four guide holes are uniformly distributed in the concave-convex die, and four guide posts are arranged on the upper concave-convex die corresponding to the four guide holes.
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| CN202010699972.XA CN111822565B (en) | 2020-07-20 | 2020-07-20 | Snake-shaped strip sheet part stamping die |
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| CN105234307B (en) * | 2015-11-16 | 2017-11-28 | 重庆持恒模具有限公司 | Stamping die waste material ejecting mechanism |
| CN207255038U (en) * | 2017-09-28 | 2018-04-20 | 天津商业大学 | A kind of stamping die for processing arc surfaced tap retaining ring |
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