CN113751586B - Automatic production line for one-step forming of double-bead spring plate - Google Patents
Automatic production line for one-step forming of double-bead spring plate Download PDFInfo
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- CN113751586B CN113751586B CN202111129623.5A CN202111129623A CN113751586B CN 113751586 B CN113751586 B CN 113751586B CN 202111129623 A CN202111129623 A CN 202111129623A CN 113751586 B CN113751586 B CN 113751586B
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- 239000011324 bead Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000004579 marble Substances 0.000 claims abstract description 34
- 230000000750 progressive effect Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 238000007667 floating Methods 0.000 claims description 59
- 239000000463 material Substances 0.000 claims description 57
- 230000007246 mechanism Effects 0.000 claims description 48
- 238000003825 pressing Methods 0.000 claims description 40
- 238000005452 bending Methods 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 8
- 238000013459 approach Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to an automatic production line for one-step molding of double-bead spring plates. The invention utilizes the front stretching station and the rear stretching station which are arranged in the progressive die so as to realize the forming of the front marble and the rear marble of the double-ball shrapnel in the same progressive die, and the invention does not need to replace different dies and clamp different dies, thereby saving the processing time, improving the processing efficiency and ensuring the processing precision. In addition, the rear stretching male die and the rear stretching female die of the rear stretching forming die unit synchronously approach to the front stretching forming die unit which has completed stretching in the process of stretching the strip, so that the strip breakage caused by the fact that the rear stretching forming die unit pulls the strip between the rear stretching forming die unit and the front stretching forming die unit in the stretching process is avoided, the design is reasonable, and the front marble and the rear marble of the double-ball shrapnel formed by the same-stage die feeding are conveniently realized.
Description
Technical Field
The invention relates to an automatic production line for one-step molding of double-bead spring plates.
Background
The double-bead spring piece is mainly used for positioning the pipe fitting. The double-bead spring plate comprises a spring plate body which is approximately V-shaped and provided with two elastic arms and two positioning beads arranged on one elastic arm. The existing processing of the double-bead spring sheet generally needs to be provided with a plurality of sets of independent dies, and after the two sets of independent dies are processed, the two positioning beads are moved into a bending die to be bent and formed. The machining process is carried out in a plurality of different sets of dies, so that the machining efficiency is relatively low, and the machining precision is difficult to guarantee due to the influence of clamping operation.
Disclosure of Invention
The invention aims to provide an automatic production line for one-step forming of double-bead spring plates, which comprises a progressive die, wherein the progressive die is provided with a front stretching station for forming front spring balls of the double-bead spring plates on a belt material and a rear stretching station for forming rear spring balls of the double-bead spring plates on the belt material, and the rear stretching station and the front stretching station are distributed at intervals along the conveying direction of the belt material; the progressive die comprises an upper die part and a lower die part; the upper die part comprises a front stretching male die, a rear stretching male die and an upper die frame which is driven by a press machine to move in a downward pressing mode, wherein the front stretching male die and the rear stretching male die are both arranged in the upper die frame to move along with the lower die frame in the downward pressing mode, the front stretching male die is positioned on a front stretching station, and the rear stretching male die is positioned on a rear stretching station; the lower die part comprises a front stretching female die, a rear stretching female die and a lower die frame, wherein the front stretching female die and the rear stretching female die are both arranged in the lower die frame, the front stretching female die is positioned on a front stretching station and forms a front stretching forming die unit of front marble for forming a double-ball shrapnel on a belt material with a front stretching male die, and the rear stretching female die is positioned on a rear stretching station and forms a rear stretching forming die unit of rear marble for forming the double-ball shrapnel on the belt material with a rear stretching male die; the rear stretching male die can be translationally arranged in the upper die frame along the conveying direction of the belt material; the rear stretching female die can be horizontally arranged in the lower die frame along the conveying direction of the strip material; an upper driving mechanism for driving the rear stretching male die to move close to the front stretching male die along the conveying direction of the belt material is arranged in the upper die frame; the lower die frame is internally provided with a lower driving mechanism for driving the rear stretching die to synchronously move close to the front stretching die along the conveying direction of the belt material and the rear stretching punch.
The invention utilizes the front stretching station and the rear stretching station which are arranged in the progressive die so as to realize the forming of the front marble and the rear marble of the double-ball shrapnel in the same progressive die, and the invention does not need to replace different dies and clamp different dies, thereby saving the processing time, improving the processing efficiency and ensuring the processing precision. In addition, the rear stretching male die and the rear stretching female die of the rear stretching forming die unit synchronously approach to the front stretching forming die unit which has completed stretching in the process of stretching the strip, so that the strip breakage caused by the fact that the rear stretching forming die unit pulls the strip between the rear stretching forming die unit and the front stretching forming die unit in the stretching process is avoided, the design is reasonable, and the front marble and the rear marble of the double-ball shrapnel formed by the same-stage die feeding are conveniently realized.
Drawings
FIG. 1 shows a front view of a machined dual bead spring of the present invention;
FIG. 2 shows a perspective view of a processed double bead spring of the present invention;
FIG. 3 shows a schematic structural view of the present invention;
FIG. 4 shows a schematic structural diagram of the progressive die of the present invention;
FIG. 5 shows a schematic view of the components of FIG. 4 after they have been disassembled;
FIG. 6 is a schematic view of the upper die carrier after being driven to move downward on the basis of FIG. 4 to complete the front stroke;
FIG. 7 is a schematic view of the upper die carrier after being continuously driven to move downwards on the basis of FIG. 6 to complete the back-end stroke;
Fig. 8 shows a schematic drawing of a strip section being pulled between a rear stretch-forming die unit and a front stretch-forming die unit.
Reference numerals:
10 double-ball spring plates, 101 front marbles and 102 rear marbles;
20 upper die part, 201 front stretching male die, 202 rear stretching male die, 203 upper die frame, 204 floating plate, 205 through hole, 206 upper driving wedge, 207 floating elastic reset mechanism, 208 male die elastic mechanism, 209 cutter, 210 bending male die, 211 floating plate inclined plane, 212 upper driving wedge inclined plane;
30 lower die part, 301 front stretching die, 302 rear stretching die, 303 lower die carrier, 304 sliding plate, 305 lower driving wedge, 306 sliding plate inclined plane, 307 lower driving wedge inclined plane, 308 wedge elastic reset mechanism, 309 bending die;
40 feeding mechanism.
Detailed Description
The scheme of the application is further described below with reference to the accompanying drawings.
An automatic production line for one-step molding of a double-ball spring sheet is used for processing the double-ball spring sheet 10 shown in fig. 1 and 2, and the double-ball spring sheet comprises a front marble 101 and a rear marble 102.
As shown in fig. 4 and 5, the automatic production line for one-step forming of the double-bead spring sheet comprises a progressive die provided with a front stretching station for forming a front bead 101 of the double-bead spring sheet on the strip and a rear stretching station for forming a rear bead 102 of the double-bead spring sheet on the strip, wherein the rear stretching station and the front stretching station 1 are distributed at intervals along the conveying direction a of the strip, and in this embodiment, the front stretching station is positioned in front of the rear stretching station along the conveying direction of the strip;
The progressive die includes an upper die portion 20 and a lower die portion 30;
The upper die part 20 comprises a front stretching male die 201, a rear stretching male die 202 and an upper die frame 203 which is driven by a press machine (not shown in the figure) to move downwards, wherein the front stretching male die 201 and the rear stretching male die 202 are both arranged in the upper die frame 203 to move downwards along with the upper die frame 203, the front stretching male die 201 is positioned on a front stretching station, and the rear stretching male die 202 is positioned on a rear stretching station;
The lower die part 30 comprises a front stretching female die 301, a rear stretching female die 302 and a lower die frame 303, wherein the front stretching female die 301 and the rear stretching female die 302 are arranged in the lower die frame 303, the front stretching female die 301 is positioned on a front stretching station and forms a front stretching forming die unit of a front marble 101 for forming a double-ball shrapnel on a belt material with the front stretching male die 201, and the rear stretching female die 302 is positioned on a rear stretching station and forms a rear stretching forming die unit of a rear marble 102 for forming the double-ball shrapnel on the belt material with the rear stretching male die 202;
the rear stretching male die 202 is translatably arranged in the upper die frame 203 along the conveying direction A of the belt material;
the rear stretching die 302 is translatably installed in the lower die frame 303 along the conveying direction A of the belt material;
An upper driving mechanism for driving the rear stretching male die 202 to move close to the front stretching male die 201 along the conveying direction A of the belt material is arranged in the upper die frame 203;
The lower die frame 303 is provided with a lower driving mechanism for driving the rear stretching die 302 to move close to the front stretching die 301 along the conveying direction A of the belt material synchronously with the rear stretching punch 202.
The front stretching station and the rear stretching station arranged by the progressive die are utilized in the embodiment so as to conveniently realize the front marble and the rear marble of the double-ball shrapnel formed in the same progressive die, different dies are not required to be replaced, clamping of different dies is not required, processing time is saved, processing efficiency is improved, and processing precision can be guaranteed.
In addition, the rear stretching male die and the rear stretching female die of the rear stretching forming die unit synchronously approach to the front stretching forming die unit which has completed stretching in the process of stretching the strip, so that the strip breakage caused by the fact that the rear stretching forming die unit pulls the strip between the rear stretching forming die unit and the front stretching forming die unit in the stretching process is avoided, the design is reasonable, and the front marble and the rear marble of the double-ball shrapnel formed by the same-stage die feeding are conveniently realized.
The front stretching forming die unit and the rear stretching forming die unit stretch the belt material successively in one pressing movement stroke of the upper die carrier 203;
The one-time pressing moving stroke of the upper die carrier 203 comprises a previous front-stage stroke and a subsequent tail-stage stroke;
The front stretching forming die unit stretches the belt material in the pressing movement of the front section stroke of the upper die frame 203;
The rear stretching forming die unit stretches the belt material in the downward pressing movement of the tail section stroke of the upper die frame 203;
The upper driving mechanism is arranged to drive the rear stretching male die 202 to move close to the front stretching male die 201 along the conveying direction A of the strip material in the process of pushing down the upper die carrier 203 for the tail section stroke;
The lower driving mechanism is configured to drive the rear stretching die 302 to move close to the front stretching die 301 in synchronization with the rear stretching punch 202 along the conveying direction a of the tape during the pressing movement of the upper die frame 203 for the tail stroke.
The technical scheme can realize that the front marble and the rear marble of the double-marble elastic sheet can be formed in one pressing movement stroke of the upper die carrier. Meanwhile, the upper driving mechanism and the lower driving mechanism start to work when the upper die frame performs the downward pressing movement of the tail section stroke, so as to work synchronously with the rear stretching forming die unit, and the design is reasonable.
The upper die frame 203 is provided with a floating plate 204 which moves obliquely between a distal end position of the male die far away from the front stretching male die and a proximal end position of the male die near to the front stretching male die, and the oblique movement direction of the floating plate is oblique to the conveying direction A of the belt material;
The floating plate 204 is provided with a through hole 205 for the rear stretching male 202 to pass through, the axis of the through hole 205 is perpendicular to the conveying direction A of the belt material, the rear stretching male 202 passes through the through hole 205, the tilting motion of the floating plate 204 is divided into an up-and-down motion perpendicular to the conveying direction A of the belt material and a translational motion parallel to the conveying direction A of the belt material, the rear stretching male 202 slides relative to the floating plate 204 in the up-and-down motion direction of the floating plate 204, and the rear stretching male 202 is fixed relative to the floating plate 204 in the translational motion direction of the floating plate, so that the rear stretching male 202 moves along the floating plate 204 in the translational motion direction of the floating plate 204, and the translational motion direction of the floating plate 204 tilting motion from the distal position of the male to the proximal position of the male is the same as the direction of the rear stretching male moving along the conveying direction A of the belt material, so that the floating plate 204 moves along the conveying direction A of the belt material along the front stretching male 202 when tilting motion from the distal position of the male to the proximal position of the rear stretching male;
The upper driving mechanism comprises an upper driving wedge 206, the upper driving wedge 206 is fixedly arranged in the upper die carrier 203, and the upper driving wedge 206 and the floating plate 204 form a wedge mechanism so that the upper driving wedge 206 guides the floating plate 204 to move obliquely;
The floating plate 204 is always abutted against the lower die carrier 303 during the pressing movement of the upper die carrier 203 for the tail stroke, so that the lower die carrier 303 is pushed during the pressing movement of the upper die carrier 203 for the tail stroke, and the floating plate 204 is obliquely moved from the distal position to the proximal position of the male die under the guidance of the upper driving wedge 206.
The upper driving mechanism disclosed by the technical scheme utilizes the downward pressing movement of the upper die carrier as a power source, does not need to additionally arrange the power source, and simultaneously can make the rear stretching male die gradually move close to the front stretching male die in translation along with the downward pressing movement of the upper die carrier, so that the design is reasonable.
The lower die carrier 303 is provided with a sliding plate 304 which translates between a die distal end position far away from the front stretching die and a die proximal end position close to the front stretching die, wherein the translation direction of the sliding plate 304 is parallel to the conveying direction A of the belt material, and the rear stretching die 302 is fixedly arranged on the sliding plate 304 relative to the sliding plate 304 so that the rear stretching die 302 translates along with the sliding plate 304;
The lower driving mechanism comprises a lower driving wedge 305, and the lower driving wedge 305 is installed in the lower die carrier 303 in a manner of sliding up and down between a wedge up-shift highest position and a wedge down-shift lowest position;
The lower driving wedge 305 and the sliding plate 304 form a wedge mechanism, so that the sliding plate 304 is driven to translate when the lower driving wedge 305 slides up and down, wherein the sliding plate 304 is positioned at the distal end of the female die when the lower driving wedge 305 is positioned at the highest position of the wedge, and the sliding plate 304 is positioned at the proximal end of the female die when the lower driving wedge 305 is positioned at the lowest position of the wedge;
the lower driving wedge 305 always abuts against the upper driving wedge 206 during the pressing movement of the upper die carrier 203 for the tail-section stroke, so that the upper driving wedge 206 pushes the lower driving wedge 305 from the highest position of the wedge up to the lowest position of the wedge down during the pressing movement of the upper die carrier 203 for the tail-section stroke.
The lower driving mechanism disclosed by the technical scheme uses the downward-pressing movement of the upper driving wedge (namely the upper die frame) as a power source, the power source is not required to be additionally arranged, and meanwhile, the rear stretching die can be gradually moved close to the front stretching die in the downward-pressing movement along with the upper die frame, so that the design is reasonable.
The sliding plate 304 is provided with a sliding plate inclined surface 306, and an inclined surface 307 of the lower driving inclined wedge always abuts against the sliding plate inclined surface 306;
The floating plate 204 is provided with a floating plate inclined plane 211, and the inclined plane 212 of the upper driving inclined wedge always abuts against the floating plate inclined plane 211;
A wedge elastic reset mechanism 308 which enables the lower driving wedge 305 to always return to the highest position of the upper movement is arranged between the lower driving wedge 305 and the lower die carrier 303;
A floating elastic reset mechanism 207 which enables the floating plate 204 to always have a trend of returning to the distal end position of the male die is arranged between the floating plate 204 and the upper die frame 203;
in this embodiment, the wedge elastic reset mechanism and the floating elastic reset mechanism may be existing elastic reset mechanisms, and the wedge elastic reset mechanism and the floating elastic reset mechanism may be, for example, mechanisms including compression springs, which are not described herein.
The floating plate 204 is always separated from the lower die frame 303 in the pressing movement of the upper die frame 203 for the front-stage stroke, so that the floating plate 204 is always positioned at the distal end of the male die;
The lower driving wedge 305 is always separated from the upper driving wedge 206 in the pressing movement of the upper die frame for the front stroke, so that the lower driving wedge 305 is always at the highest position of the wedge.
According to the technical scheme, reset of the post-stretching male die and the post-stretching female die after stretching operation is completed can be achieved by arranging the inclined wedge elastic reset mechanism and the floating elastic reset mechanism.
The front stretching male die 201 is gradually inserted into the front stretching female die 301 to stretch the strip material to form a front marble of a double-ball shrapnel in the pressing movement of the upper die frame 203 in the front stage stroke, and the front stretching male die 201 is always static relative to the front stretching female die 301 in the pressing movement of the upper die frame 203 in the tail stage stroke so as not to stretch the strip material any more;
The front stretching male die 201 is arranged in the upper die frame 203 in a vertically sliding manner, and a male die elastic mechanism 208 is arranged between the upper die frame 203 and the front stretching male die 201;
the front stretching male die 201 is forced by the male die elastic mechanism 208 to be still relative to the upper die frame all the time in the pressing movement of the upper die frame 203 for the front stage stroke, so that the front stretching male die 201 is gradually inserted into the front stretching female die 301 along with the pressing movement of the upper die frame 203 to stretch the belt material;
The front stretching male die 201 slides relative to the upper die frame 203 against the male die elastic mechanism 208 during the pressing movement of the upper die frame 203 for the tail stroke, so that the front stretching male die 201 is always stationary relative to the front stretching female die 301.
According to the technical scheme, the male elastic mechanism is arranged, so that the acting force required by the front stretching male to stretch the belt material can be provided when the front stretching male needs to stretch, and the front stretching male is avoided after the front stretching male finishes the stretching work, so that the front stretching male can slide relative to the upper die frame and does not move along with the lower die frame in a pressing manner, and the belt material is not stretched. The front stretching and forming die unit and the rear stretching and forming die unit are reasonable in design, so that the front stretching and forming die unit and the rear stretching and forming die unit can asynchronously stretch and form the strip, namely, the front marble and the rear marble of the double-marble elastic sheet can be stretched and formed successively.
The male die elastic mechanism 208 is a nitrogen spring; the cylinder body of the nitrogen spring is fixedly arranged on the upper die carrier 203, and the piston rod of the nitrogen spring is propped against the front stretching male die 201.
The progressive die is also provided with a cutting station for cutting off the strip material to separate out the double-bead spring piece body to be bent and a bending forming station for bending the double-bead spring piece body to be bent to form the double-bead spring piece;
the rear stretching station, the front stretching station, the cutting station and the bending forming station are sequentially distributed at intervals along the conveying direction A of the belt material;
The upper die part 20 further comprises a cutter 209 positioned at a cutting station and a bending punch 210 positioned at a bending forming station, wherein the cutter 209 and the bending punch 210 are both arranged in the upper die frame 203 so as to move along with the lower die frame 203;
the lower die part 30 further comprises a bending female die 309 located at a bending forming station, the bending female die 309 is mounted in the lower die frame 303, and the bending female die 309 is located at the bending forming station and forms a bending forming die unit with the bending male die 210 for bending the double-bead spring sheet body to be bent.
The technical scheme is reasonable in design, so that the forming processing of the double-bead spring plate can be conveniently finished in the same progressive die, different dies are not required to be configured, and clamping of different dies is not required.
The automatic double-bead spring one-step forming production line also comprises a feeding mechanism 40 for conveying the belt material.
The working process of the invention can be seen as follows:
As shown in fig. 4, the progressive die is in the open state, the floating plate 204 is in the distal position of the male die, the lower driving wedge 305 is in the highest position of upward movement, the sliding plate 304 is in the distal position of the female die, the floating plate 204 is separated from the lower die carrier 303, and the upper driving wedge 206 is separated from the lower driving wedge 305.
As shown in fig. 6, the upper die carrier completes the pressing movement of the front stroke, the front stretch forming die unit completes the stretching of the strip, the front marble 101 is formed, the floating plate 204 is at the distal position of the male die, the lower driving wedge 305 is at the highest position of the upward movement, the sliding plate 304 is at the distal position of the female die, the floating plate 204 starts to lean against the lower die carrier 303, the upper driving wedge 206 starts to lean against the lower driving wedge 305, and the cutter 209 cuts the strip to separate the double-marble shrapnel sheet body (not shown in the figure) to be bent in front of the cutter.
As shown in fig. 7, the upper die carrier completes the pressing movement of the tail stroke, the rear stretching and forming die unit completes the stretching of the strip, the rear marble 102 is formed, the floating plate 204 is positioned at the proximal end position of the male die, the lower driving wedge 305 is positioned at the lowest position of the lower driving wedge, the sliding plate 304 is positioned at the proximal end position of the female die, and the bending and forming die unit completes the bending of the double-marble shrapnel sheet to be bent, which is positioned in front of the cutter 209, to form the double-marble shrapnel.
As shown in fig. 8, during the stretching operation of the strip by the rear stretch-forming die unit, the strip section 401 between the rear stretch-forming die unit and the front stretch-forming die unit is pulled in the direction B, which is opposite to the conveying direction a of the strip, and this pulling causes the strip section 401 to break. In order to solve the technical problem of breakage of the strip section 401, the present embodiment makes the rear stretching male die 202 and the rear stretching female die 302 of the rear stretching molding die unit synchronously approach to the front stretching molding die unit which has completed the stretching operation along the direction C in the process of stretching the strip, wherein the direction C is in the same direction as the conveying direction a of the strip, thereby counteracting the amount of the strip section 401 to be pulled, and thereby avoiding pulling the strip section 401.
Claims (7)
1. The automatic production line for one-step forming of the double-bead elastic sheet comprises a progressive die, wherein the progressive die is provided with a front stretching station for forming a front marble of the double-bead elastic sheet on a belt material and a rear stretching station for forming a rear marble of the double-bead elastic sheet on the belt material, and the rear stretching station and the front stretching station are distributed at intervals along the conveying direction of the belt material;
The progressive die comprises an upper die part and a lower die part;
The upper die part comprises a front stretching male die, a rear stretching male die and an upper die frame which is driven by a press machine to move in a downward pressing mode, wherein the front stretching male die and the rear stretching male die are both arranged in the upper die frame to move along with the lower die frame in the downward pressing mode, the front stretching male die is positioned on a front stretching station, and the rear stretching male die is positioned on a rear stretching station;
The lower die part comprises a front stretching female die, a rear stretching female die and a lower die frame, wherein the front stretching female die and the rear stretching female die are both arranged in the lower die frame, the front stretching female die is positioned on a front stretching station and forms a front stretching forming die unit of front marble for forming a double-ball shrapnel on a belt material with a front stretching male die, and the rear stretching female die is positioned on a rear stretching station and forms a rear stretching forming die unit of rear marble for forming the double-ball shrapnel on the belt material with a rear stretching male die;
The method is characterized in that:
the rear stretching male die can be translationally arranged in the upper die frame along the conveying direction of the belt material;
the rear stretching female die can be horizontally arranged in the lower die frame along the conveying direction of the strip material;
An upper driving mechanism for driving the rear stretching male die to move close to the front stretching male die along the conveying direction of the belt material is arranged in the upper die frame;
the lower die frame is internally provided with a lower driving mechanism for driving the rear stretching die to synchronously move close to the front stretching die along the conveying direction of the belt material and the rear stretching punch;
the progressive die is also provided with a cutting station for cutting off the strip material to separate out the double-bead spring piece body to be bent and a bending forming station for bending the double-bead spring piece body to be bent to form the double-bead spring piece;
the rear stretching station, the front stretching station, the cutting station and the bending forming station are sequentially distributed at intervals along the conveying direction of the belt material.
2. The automatic production line for one-step molding of double-bead spring plates according to claim 1, wherein:
The front stretching forming die unit and the rear stretching forming die unit stretch the belt material successively in one pressing and moving stroke of the upper die frame;
the primary pressing movement stroke of the upper die frame comprises a previous front section stroke and a later tail section stroke;
The front stretching forming die unit stretches the belt material in the pressing movement of the upper die frame for the front-stage stroke;
the back stretching forming die unit stretches the belt material in the downward pressing movement of the tail section stroke of the upper die frame;
the upper driving mechanism is arranged to drive the rear stretching male die to move close to the front stretching male die along the conveying direction of the strip material in the process of pushing down the upper die frame to carry out the tail section stroke;
the lower driving mechanism is arranged to drive the rear stretching female die to move close to the front stretching female die along the conveying direction of the strip material synchronously with the rear stretching male die in the pressing movement of the tail section stroke of the upper die frame.
3. The automatic production line for one-step molding of double bead spring plates according to claim 2, wherein:
A floating plate which moves obliquely between a distal end position of the male die far away from the front stretching male die and a proximal end position of the male die close to the front stretching male die is arranged in the upper die frame, and the oblique movement direction of the floating plate is oblique to the conveying direction of the belt material;
The floating plate is provided with a through hole for a rear stretching male die to pass through, the rear stretching male die passes through the through hole, the tilting motion of the floating plate is decomposed into an up-and-down motion perpendicular to the conveying direction of the belt material and a translational motion parallel to the conveying direction of the belt material, the rear stretching male die slides relative to the floating plate in the up-and-down motion direction of the floating plate, the rear stretching male die is fixed relative to the floating plate in the translational motion direction of the floating plate, so that the rear stretching male die moves along the floating plate in the translational motion direction of the floating plate, the translational motion direction of the tilting motion of the floating plate from the distal end position of the male die to the proximal end position of the male die and the direction of the rear stretching male die moving close to the front stretching male die along the conveying direction of the belt material are the same, and the rear stretching male die is driven to move close to the front stretching male die along the conveying direction of the belt material when the floating plate tilts from the distal end position of the male die to the proximal end position;
The upper driving mechanism comprises an upper driving wedge which is fixedly arranged in the upper die frame, and the upper driving wedge and the floating plate form a wedge mechanism so that the upper driving wedge guides the floating plate to move in an inclined way;
the floating plate is always propped against the lower die frame in the pressing movement of the upper die frame for the tail section stroke, so that the lower die frame is pushed in the pressing movement of the upper die frame for the tail section stroke, and the floating plate moves obliquely from the distal end position of the male die to the proximal end position of the male die under the guidance of the upper driving wedge.
4. A double bead spring one-shot forming automatic production line according to claim 3, wherein:
The lower die frame is internally provided with a sliding plate which translates between a die distal end position far away from the front stretching die and a die proximal end position close to the front stretching die, wherein the translation direction of the sliding plate is parallel to the conveying direction of the belt materials, and the rear stretching die is fixedly arranged on the sliding plate relative to the sliding plate so as to translate the rear stretching die along with the sliding plate;
The lower driving mechanism comprises a lower driving wedge which is arranged in the lower die frame in a sliding manner up and down between an upper highest position of the wedge and a lower lowest position of the wedge;
The lower driving wedge and the sliding plate form a wedge mechanism, so that the sliding plate is driven to translate when the lower driving wedge slides up and down, wherein the sliding plate is positioned at the far end of the female die when the lower driving wedge is positioned at the highest position of the wedge, and is positioned at the near end of the female die when the lower driving wedge is positioned at the lowest position of the wedge;
The lower driving wedge always abuts against the upper driving wedge in the process of pushing down the upper die frame to carry out the tail section stroke, so that the upper driving wedge pushes the lower driving wedge in the process of pushing down the upper die frame to carry out the tail section stroke, and the lower driving wedge slides downwards from the highest position of the wedge to the lowest position of the wedge.
5. The automatic production line for one-step molding of double-bead spring plates according to claim 4, wherein:
The sliding plate is provided with a sliding plate inclined plane, and the inclined plane of the lower driving inclined wedge is always propped against the inclined plane of the sliding plate;
The floating plate is provided with a floating plate inclined plane, and the inclined plane of the upper driving inclined wedge always abuts against the inclined plane of the floating plate;
A wedge elastic reset mechanism which enables the lower driving wedge to always return to the highest upward-moving position is arranged between the lower driving wedge and the lower die frame;
a floating elastic reset mechanism which enables the floating plate to always have a trend of returning to the distal end position of the male die is arranged between the floating plate and the upper die frame;
The floating plate is always separated from the lower die frame in the pressing movement of the front-section stroke of the upper die frame, so that the floating plate is always positioned at the far end of the male die;
the lower driving wedge is always separated from the upper driving wedge in the pressing movement of the front section stroke of the upper die frame, so that the lower driving wedge is always positioned at the highest position of the wedge in the upward movement.
6. The automatic production line for one-step molding of double-bead spring plates according to claim 5, wherein:
The front stretching male die is gradually inserted into the front stretching female die to stretch the belt materials in the pressing movement of the front section stroke of the upper die frame, and is static relative to the front stretching female die in the pressing movement of the tail section stroke of the upper die frame;
The front stretching male die can be arranged in the upper die frame in a vertically sliding manner, and a male die elastic mechanism is arranged between the upper die frame and the front stretching male die;
The front stretching male die is forced by the male die elastic mechanism to be static relative to the upper die frame in the process of pushing down and moving the upper die frame for front-stage travel;
The front stretching male die slides relative to the upper die frame against the male die elastic mechanism in the process of pushing down the upper die frame for tail section travel.
7. The automatic production line for one-step molding of double bead spring plates according to claim 6, wherein:
the male die elastic mechanism is a nitrogen spring;
The cylinder body of the nitrogen spring is fixedly arranged on the upper die carrier, and the piston rod of the nitrogen spring is propped against the front stretching male die.
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| CN202111129623.5A CN113751586B (en) | 2021-09-26 | 2021-09-26 | Automatic production line for one-step forming of double-bead spring plate |
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| CN113751586B true CN113751586B (en) | 2024-04-23 |
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| CN216065147U (en) * | 2021-09-26 | 2022-03-18 | 广东恒力精密工业有限公司 | One-step forming automatic production line for double-bead elastic sheet |
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2021
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| JPH0494828A (en) * | 1990-08-11 | 1992-03-26 | Press Gijutsu Kenkyusho:Kk | Method and device for feeding front end of material to progressive die |
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| CN113751586A (en) | 2021-12-07 |
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