CN104785628A - Method for pressing groove profile with bending angle smaller than or equal to 90 degrees - Google Patents
Method for pressing groove profile with bending angle smaller than or equal to 90 degrees Download PDFInfo
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- CN104785628A CN104785628A CN201510141211.1A CN201510141211A CN104785628A CN 104785628 A CN104785628 A CN 104785628A CN 201510141211 A CN201510141211 A CN 201510141211A CN 104785628 A CN104785628 A CN 104785628A
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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
- B21D37/10—Die sets; Pillar guides
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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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/08—Bending tubes using mandrels or the like in press brakes or between rams and anvils or abutments; Pliers with forming dies
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Abstract
The invention provides a method for pressing a groove profile with the bending angle smaller than or equal to 90 degrees. According to the method, an upper male die and a lower female die are adopted for machining; the male die comprises an expansion sleeve, or simply sleeve for short and an expansion core, or simply core for short, wherein the exterior of the expansion sleeve is provided with the narrow upper portion and the wide lower portion and the expansion sleeve and the expansion core are connected in cup joint mode. At least one of a sleeve hole and the core is in a big-end-up wedge shape, and an opposite locking mechanism is arranged between the sleeve and the core. The female die comprises a multi-section-shaped inner female die body and an outer female die body, wherein the multi-section-shaped inner female die body is provided with a groove with the wide upper portion and the narrow lower portion, and the inner female die body and the outer female die body are connected in an elastic mode. Pressure is applied on a pressing machine of the male die continuously to make the pressing machine move downwards, the male die moves downwards, the sleeve makes contact with a workpiece firstly, then the core moves downwards relative to the sleeve, the sleeve is expanded, and the male die presses the workpiece to make the workpiece be bent into the groove in the inner female die body; the inner female die body moves downwards when the resistance of an elastic body at the bottom of the inner female die body is exceeded, and a preset workpiece is formed when the inner female die body reaches the termination point of the bottom of the outer female body; the elastic body at the bottom of the inner female body recovers in an elastic mode, the inner female die body is upspringed, the expansion core and the expansion sleeve move relatively to return to the original states, a stamping mechanism drives the male die out of the female die after the elastic body completely recovers, and the workpiece is taken out. By means of the method of die machine, defects existing in the prior art are overcome.
Description
Technical field
The present invention relates to mold machining technology field, is specifically a kind of method of suppressing angle of bend and being less than or equal to 90 ° of channel sections.
Background technology
At present, household electrical appliance, instrument, automobile and other industries enters production in enormous quantities state, numerous parts only wastes time and energy by machining, and precision is difficult to ensure, even some shaped piece cannot be processed at all, the bending being less than or equal to 90 ° of shallow/deep groove type workpiece as current adopts bender just can not realize, current usual way adopts the method for welding and piecing together, the workpiece often produced is yielding, also need manually to correct, therefore this method wastes time and energy, the workpiece not specification of processing, and it is yielding, therefore current this processing method is very undesirable.
In view of this, special proposition the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provides a kind of method of suppressing angle of bend and being less than or equal to 90 ° of channel sections.
For solving the problems of the technologies described above, the present invention adopts the basic conception of technical scheme to be:
Suppress the method that angle of bend is less than or equal to 90 ° of channel sections, the device of compacting comprises the upper die combination of coaxial setting and lower die combination, described upper die combination comprises: expansion sleeve, and be many valvular structures that elasticity connects, outside is up-narrow and down-wide wedge mould, and expanded core, in the mesopore of described expansion sleeve, in the mesopore of expansion sleeve and expanded core, at least one is up big and down small wedge shape, described expanded core when the original state of not suppressing minimum point height higher than expansion sleeve minimum point height, expanded core and described expansion sleeve matched in clearance, and relative retaining mechanism is housed between the two, described relative retaining mechanism is: between the lobe body that expansion sleeve is opposed, be connected with transverse support bar, described expanded core is the structure in the middle part of in the of with longitudinal chute, in its longitudinal chute flexible, described transverse support bar is through longitudinal chute of described expanded core, withstand in the transverse support bar in the longitudinal chute of expanded core bottom described elastic component, described lower die combination comprises: interior die, and comprise many valve structures that elasticity connects, the groove of described interior die is the wedge-shaped slot with described expansion sleeve outer shape adaptation, and described expansion sleeve can be entered in the groove of inner groovy, with outer die, its groove is structure wide at the top and narrow at the bottom, and described interior die, in described outer die, has an elastomer in the groove of described outer die, the below of interior die,
Described drawing method comprises:
1) be contained on a punching mechanism by described upper die combination, punching mechanism connects the expanded core of described upper die combination, flat workpiece to be processed is laid in the upper port place of described lower die combination;
2) punching mechanism is descending, the expansion sleeve of die combination and expanded core DL synchronization in drive, expansion sleeve first contacts workpiece to be processed, and punching mechanism continues descending, now the stamping press of press does not reach the yield strength of workpiece to be processed, expanded core continues descending, and expansion sleeve is motionless, and the elastic component in expanded core chute shrinks, workpiece does not bend, when expanded core comes downwards to the bottom of expansion sleeve, extended by expansion sleeve, expanded core also touches workpiece to be processed;
3) punching mechanism continues descending, and press stamping press exceedes the yield strength of workpiece to be processed, and workpiece bends and makes in its groove entering interior die by expansion sleeve and expanded core in the lump;
4) punching mechanism continues descending, exceed the resistance of interior die bottom elastomeric, interior die is descending, descending along with interior die, interior die inwardly compresses by outer die, when interior die goes downwards to outer female bottom terminating point, workpiece is squeezed tightly between banding on interior die outer wall, forms predetermined grooved part;
5) interior die bottom elastomeric carries out elastic recovery; interior die is popped up; elastic component simultaneously in expanded core chute replys deformation; original state is replied in expanded core and expansion sleeve relative motion, and along with the continuous rise of interior die, indent die cavity is wide becomes large gradually; after described elastomer replys deformation completely; interior die is returned to initial position, then expansion sleeve and expanded core is taken out of from the groove of lower die combination indent mould under the lifting force of punching mechanism, then takes out workpiece.
Preferably, realize elasticity by following structure between many lobes lobe body lobe body of described expansion sleeve to connect:
Connected by crossed strip bar between the lobe body that described expansion sleeve is opposed, described spring lever comprises described transverse support bar and spring; The concrete annexation of expansion sleeve and spring lever is: on the inwall of described expansion sleeve lobe body, be provided with inner small and outside big shoulder hole, described transverse support bar two ends put in the shoulder hole of two side lobe bodies respectively, and described spring is housed putting in the cross-brace boom end in shoulder hole macropore, often holding both ends of the spring that spacing back-up ring is housed, and the size of inner side limiting-position back-up ring is greater than the aperture of described shoulder hole aperture.
Preferably, connect by realizing elasticity by the mode of elastic component circumference serial connection between many lobes lobe body of described expansion sleeve.
Preferably, described relative retaining mechanism also comprises the up stop bit locking auxiliary body of expanded core relative to expansion sleeve, described up stop bit locking auxiliary body is specially: have the expansion platform cap that is greater than upper dimension bottom described expanded core, form the enlarging that is greater than upper part bottom described expansion sleeve mesopore, described expansion platform cap matches with described enlarging;
In step 5) in punching mechanism by the expansion platform cap of replying expanded core when the expansion sleeve of original state and expanded core are taken out of from the groove of lower die combination indent mould for expansion sleeve provides upper pulling force.
Preferably, be flat bottom described expansion platform cap.
Preferably, the mesopore of described expansion sleeve and expanded core are up big and down small wedge shape.
Preferably, the outside longitudinal section of described interior die is up big and down small trapezoidal, and the gradient of its outer wall gradient and described outer die groove cell wall is adaptive.
Preferably, have locating piece at the bottom portion of groove of described outer die, described locating piece is the descending terminating point of interior die.
Preferably, described outer die is many valvular structures, and many lobes are supported by horizontal adjustable support bar outward; There is external screw thread the cross-brace end of described connection many flaps expansion sleeve, and external screw thread, outside described spacing back-up ring, coordinates with the external screw thread of described transverse support bar and adjusting nut is housed.
Preferably, punching mechanism is press.
After adopting technique scheme, the present invention compared with prior art has following beneficial effect: the present invention utilizes Mould Machining workpiece, and process is simple, and efficiency is high, the specification of workpieces of production, not yielding, does not need the trouble of correcting, has saved cost.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is upper die combination of the present invention and counterdie combination sectional view before compaction;
Fig. 2 a is the sectional view of expansion sleeve first component;
Fig. 2 b is the A portion enlarged drawing of Fig. 2 a;
Fig. 2 c is the front view of expanded core;
Fig. 2 d is the A-A view of Fig. 2 c;
Upper die combination when upper die combination has just contacted workpiece to be processed when Fig. 3 is punching press and the sectional view of lower die combination;
The sectional view of the upper die combination when elastomer of interior female bottom is not also out of shape when Fig. 4 is punching press and lower die combination;
Fig. 5 be workpiece compressing time upper die combination and the sectional view of lower die combination;
The sectional view of upper die combination and lower die combination during the elastomer elasticity recovery deformation of interior female bottom when Fig. 6 is the material returned.
In figure:
--inner side limiting-position back-up ring--272 adjusting nuts--273 first connection elastomer-313, indent die component-311 second indent die component-312 abrasionproof backing plates--elastomer in the groove of the outer die in 314 wear-resisting slide rail-315 first outer die outer die component-322 of component-321 second--323 adjustable support bar-325, locating piece-324 in spacing back-up ring-271 outside platform cap-241 are expanded in 252 elastic component-26 to die combination-2 time transverse support bar-251, spring lever-25, expanded core-24, longitudinal chute-23, second component-22, shoulder hole-211, mount pad-6 first component-21, backing plate-5, workpiece to be processed-4, die combination-3 spring on stamping machine-1
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, to help understanding content of the present invention.
Below by way of the processing spec method of the present invention of the grooved workpiece of two sides and the grooved workpiece of four sides.
First introduce lower processing unit (plant) below.
With reference to Fig. 2, be a kind of device suppressed angle of bend and be less than or equal to 90 ° of channel sections, comprise the upper die combination 2 of coaxial setting and lower die combination 3, described upper die combination 2 comprises: expansion sleeve, and be many valvular structures that elasticity connects, outside is up-narrow and down-wide wedge mould, with expanded core 24, in the mesopore of described expansion sleeve, in the mesopore of expansion sleeve and expanded core 24, at least one is up big and down small wedge shape, described expanded core 24 when the original state of not suppressing minimum point height higher than expansion sleeve minimum point height, expanded core 24 and described expansion sleeve matched in clearance, and relative retaining mechanism is housed between the two, described relative retaining mechanism is: between the lobe body that expansion sleeve is opposed, be connected with transverse support bar 251, described expanded core 24 is the structure in the middle part of in the of with longitudinal chute 23, in its longitudinal chute 23 flexible 26, described transverse support bar 251 is through longitudinal chute 23 of described expanded core, withstand in the transverse support bar 251 in the longitudinal chute 23 of expanded core bottom described elastic component 26, described lower die combination comprises: interior die, and comprise many valve structures that elasticity connects, the groove of described interior die is the wedge-shaped slot with described expansion sleeve outer shape adaptation, and described expansion sleeve can be entered in the groove of inner groovy, with outer die, its groove is structure wide at the top and narrow at the bottom, and described interior die, in described outer die, has an elastomer 323 in the groove of described outer die, the below of interior die.
With reference to Fig. 1, pressure setting of the present invention adopts existing stamping machine as driving mechanism, and press slide connects the top of expanded core.
The following describes the flow process of being processed the grooved workpiece of two sides and the grooved workpiece of four sides by method of the present invention.
The processing unit (plant) of two embodiments is all based on said structure below.
Embodiment 1: the processing with the grooved workpiece of two sides.
With reference to the structural representation that Fig. 2-Fig. 6 is each procedure of processing of processing unit (plant), it is the sheet material tilted to both sides gradually from top to bottom thin, thick below above that described expansion sleeve comprises a pair opposed the first component 21 and second component 22, first component 21 and second component 22; Connected by crossed strip bar 25 between first component 21 and second component 22, described spring lever 25 comprises transverse support bar 251 and spring 252;
The concrete annexation of expansion sleeve and spring lever 25 is: composition graphs 2a and Fig. 2 b, the inwall of described first component 21 and second component 22 is provided with inner small and outside big shoulder hole 211, transverse support bar two ends put in the shoulder hole 211 of side pieces respectively, and described spring 252 is housed putting in the cross-brace boom end in shoulder hole macropore, often holding spring 252 two ends, spacing back-up ring is housed, be respectively 271 and 272, and the size of inner side limiting-position back-up ring 272 is greater than the aperture of described shoulder hole aperture, external screw thread is had at cross-brace boom end, external screw thread is outside described spacing back-up ring, coordinate with the external screw thread of described transverse support bar and adjusting nut 273 is housed, adjusting nut 273 makes the width-adjustable of expansion sleeve save, to process the grooved part of different groove width.
Expansion sleeve outside after connection forms the two up-narrow and down-wide face structures that above-mentioned elasticity connects, and its mesopore is up big and down small wedged hole.
Described expanded core 24 is also a up big and down small wedge shape, its longitudinal section as shown in Figure 2 d, the mesopore of expanded core 24 and expansion sleeve is all wedge shape, can ensure the face contact between the two when the descending expansion expansion sleeve of expanded core thus prevent expanded core to the wearing and tearing of expansion sleeve.
Refer again to Fig. 2 c and Fig. 2 d, described expanded core 24 is the structure in the middle part of in the of with longitudinal chute 23, in its longitudinal chute 23 flexible 26 (can be the common spring in Fig. 2-Fig. 6), described spring lever 25, through longitudinal chute 23 of described expanded core, withstands on bottom elastic component 26 on the spring lever 25 in the longitudinal chute 23 of expanded core.According to the length of expanded core and the width design chute quantity of workpiece to be processed 4, such as design three transverse directions chute arranged in parallel, three spring levers 25.Multiple chute is set and multiple spring lever 25 can ensure that multiple point exerts a force to workpiece to be processed 4 simultaneously, for wider workpiece to be processed 4, workpiece each point can be made to produce downforce simultaneously, make the workpiece more specification of processing, also can not because of the physical attribute of point-to-point tearing destruction workpiece itself.
The structure connected with spring lever between many lobes of expansion sleeve and longitudinal chute of expanded core form above-mentioned relative retaining mechanism with the spring structure in chute and are connected with the elasticity of expansion sleeve.
Described relative retaining mechanism also comprises the up stop bit locking auxiliary body of expanded core relative to expansion sleeve, described up stop bit locking auxiliary body is specially: have the expansion platform cap 241 that is greater than upper dimension bottom described expanded core 24, form the enlarging that is greater than upper part bottom described expansion sleeve mesopore, described expansion platform cap 241 matches with described enlarging.The expansion platform cap 241 of expanded core 24 is highly less than the depth degree of depth of enlarging bottom expansion sleeve, ensures that the minimum point height of the expanded core when the original state of not suppressing is higher than expansion sleeve minimum point height.
Being flat bottom described expansion platform cap 241, making to be formed bottom expanded core and expansion sleeve when being pressed into lowermost end a larger plane flat to ensure the bottom land of the workpiece processed.
Described interior die comprises the first indent die component 311 and the second indent die component 312, the longitudinal section of described first indent die component 311 and the second indent die component 312 is the bending structure that an interior angle is less than 90 °, " L " type structure that similar bending angle is less than 90 °; First indent die component 311 and the second indent die component 312 are opposite in the groove of outer die, are provided with connection elastomer 313 (can be the common spring in Fig. 2-Fig. 6) between bottom the first indent die component 311 and the second indent die component 312; Slope inwardly below interior die outer wall, the outside longitudinal section of interior die is made to be up big and down small trapezoidal, the gradient of outer wall and the gradient adaptation of described outer die groove cell wall, make die under the effect of connection elastomer 313 can fit with outer die, thus better extrude workpiece.
Described first indent die component 311 and the second indent die component 312 form splicing seams in bottom, an elastomer 323 is respectively provided with below these two indent die components, in ensureing, the first indent die component 311 of die and the uniformity of the second indent die component 312 lifting, be convenient to the processing of workpiece.
Be provided with abrasionproof backing plate and wear-resisting slide rail from top to bottom successively at described interior die bottom portion of groove, between interior die and the elastomer 323 of interior female bottom, be provided with wear-resisting slide rail and abrasionproof backing plate from top to bottom successively.Arranging wear-resisting slide rail and abrasionproof backing plate is to reduce workpiece and interior die, frictional force between interior die and backing plate when workpiece bows is shaping, thus the wearing and tearing of anti-locking apparatus.
Described outer die comprises the first outer die component 321 and the second outer die component 322, the longitudinal section of described first outer die component 321 and the second outer die component 322 is the bending structure that an interior angle is a bit larger tham 90 °, " L " type structure that similar interior angle is greater than 90 °; First outer die component 321 and the second outer die component 322 are to being seated on the backing plate of press operation platform, respectively supported by the adjustable support bar 325 be arranged on the mount pad 6 at backing plate 5 two ends outside first outer die component 321 and the second outer die component 322, backing plate 5 is placed on the workbench of press, support bar 325 one end is threaded with mount pad 6, and by fastening nuts, make described two outer die Component compositions become described outer die grooved frame.By the groove width of the outer die of the adjustable in length of adjusting screw(rod).
Preferably, interior die and outer die flush upper end when the original state of not suppressing.
In the bottom of the groove of described outer die, there is locating piece 324.
The processing method of the grooved workpiece of these two sides is:
1, with reference to Fig. 1, upper die combination is contained on a press, press slide connects expanded core top, flat workpiece to be processed 4 is laid in the upper port place (being the upper port place being placed on outer die in the present embodiment) of lower die combination, now the external dimensions of expansion sleeve is a1, a1 is minimum, and indent die cavity is wide is that b1, b1 are maximum.
2, with reference to Fig. 3, during for compacting, press slide is descending, and drive expanded core and expansion sleeve DL synchronization, expansion sleeve first contacts workpiece to be processed 4; Press slide continues descending, now the stamping press of press does not reach the yield strength of workpiece to be processed 4, therefore expanded core is now only had to continue descending, expansion sleeve is motionless, elastic component in expanded core chute shrinks, and workpiece does not bend, when expanded core comes downwards to the bottom of expansion sleeve, extended by expansion sleeve, expanded core also touches workpiece to be processed; Now the external dimensions of expansion sleeve is that a2, a2 are maximum, a2 > a1, and indent die cavity is wide is b2, b2=b1;
3, with reference to Fig. 4, press slide continues descending, press stamping press exceedes the yield strength of workpiece to be processed, workpiece bends and makes (in order to make workpiece to be processed 4 can enter in the deep trouth of mould, its groove width of initial position of mould should be a bit larger tham the width of expanded core lower end in practical operation) in its groove entering interior die by expansion sleeve and expanded core in the lump; Now, the external dimensions of expansion sleeve is a3, a3=a2, and indent die cavity is wide is b3, b3=b1;
4, with reference to Fig. 5, press slide continues descending, exceed the resistance of interior die bottom elastomeric 323, interior die is descending, descending along with interior die, interior die inwardly compresses by outer die, connection elastomer 313 between interior die shrinks, and when interior die goes downwards to outer female bottom locating piece (i.e. terminating point), the groove width of interior die is minimum, workpiece is squeezed tightly between banding on interior die outer wall, forms predetermined grooved part.Now the external dimensions of expansion sleeve is a4, a4=a2=a3, and indent die cavity is wide is that b4, b4 are minimum, b4 < b3, then workpiece groove width is minimum;
5, the material returned: with reference to Fig. 6; interior die bottom elastomeric 323 carries out elastic recovery; interior die is popped up; elastic component simultaneously in expanded core chute replys deformation; expanded core and expansion sleeve relative motion is made to reply original state; along with the continuous rise of interior die; indent die cavity is wide becomes large gradually; after elastomer 323 replys deformation completely; interior die returns to initial position; groove width reaches again maximum, then expansion sleeve and expanded core is taken out of from the groove of lower die combination under the lifting force of press slide, then takes out workpiece.Because the groove width of now workpiece is minimum, the groove width of interior die is b5, b5=b1, minimum, and the external dimensions of the groove width of outer die (i.e. the external dimensions of expansion sleeve) is a5, a5=a1, maximum, therefore can easily upper die combination be taken out from lower die combination, workpiece also can easily be removed.When upper die combination is taken out of by press slide from lower die combination, on the one hand by the connection function of the elastic component in the longitudinal chute of spring lever, expanded core and expanded core, the upper pulling force upwards lifting expansion sleeve by expanding platform cap on the other hand, upper die combination is taken out of by completely from lower die combination in acting in conjunction, spring lever can be prevented like this to be biased distortion, and then to ensure effectively exiting of upper die combination.
Embodiment 2: the processing with the grooved workpiece of four sides.
Described expansion sleeve comprises the first opposed component and second component, and the 3rd opposed component and the 4th component, four components are all the sheet material tilted to both sides gradually from top to bottom thin, thick below above, and four components surround the rectangular pyramid shape being formed and clip top, connected by crossed strip bar between four components, described spring lever comprises transverse support bar and spring, the concrete annexation of expansion sleeve and spring lever is: at described first component, second component, the inwall of the 3rd component and the 4th component is provided with inner small and outside big shoulder hole, there is a cross transverse support bar, its four end puts in the shoulder hole of four components respectively, and described spring is housed putting in the cross-brace boom end in described shoulder hole macropore, often holding both ends of the spring, spacing back-up ring is housed, and the size of inner side limiting-position back-up ring is greater than the aperture of described shoulder hole aperture, external screw thread is had at cross-brace boom end, external screw thread is outside described spacing back-up ring, coordinate with the external screw thread of described transverse support bar and adjusting nut is housed, adjusting nut makes the width-adjustable of expansion sleeve save, to process the grooved part of different groove width.
Expansion sleeve outside after connection forms the up-narrow and down-wide tetrahedron structure that above-mentioned elasticity connects, and its mesopore is up big and down small wedged hole.
Described expanded core is a up big and down small quadrangle terrace with edge, and this shape can ensure the face contact between the two when the descending expansion expansion sleeve of expanded core thus prevent expanded core to the wearing and tearing of expansion sleeve.
Described expanded core is the structure in the middle part of in the of with longitudinal chute, in its longitudinal chute flexible (can be common spring), the right-angled intersection point of described four transverse support bar is positioned at longitudinal chute of expanded core, and described elastic component lower end withstands on the right-angled intersection point of described transverse support bar.
The elasticity that spring structure in the structure connected with spring lever between many lobes of expansion sleeve and longitudinal chute of expanded core and chute is formed between above-mentioned relative retaining mechanism and expansion sleeve connects.
Described relative retaining mechanism also comprises the up stop bit locking auxiliary body of expanded core relative to expansion sleeve, described up stop bit locking auxiliary body is specially: have the expansion platform cap that is greater than upper dimension bottom described expanded core, form the enlarging that is greater than upper part bottom described expansion sleeve mesopore, described expansion platform cap matches with described enlarging.The expansion platform cap height of expanded core is less than the depth degree of depth of enlarging bottom expansion sleeve, ensures that the minimum point height of the expanded core when the original state of not suppressing is higher than expansion sleeve minimum point height.
Being flat bottom described expansion platform cap, making to be formed bottom expanded core and expansion sleeve when being pressed into lowermost end a larger plane flat to ensure the bottom land of the workpiece processed.
Described interior die comprises the first indent die component, the second indent die component, the 3rd indent die component, the 4th indent die component, the 5th indent die component and the 6th indent die component, the longitudinal section of six indent die components is the bending structure that an interior angle is less than 90 °, " L " type structure that similar bending angle is less than 90 °; First indent die component and the second indent die component is opposed, the 3rd indent die component and the opposed both sides at the first indent die component of the 4th indent die component, the 5th indent die component and the opposed both sides at the second indent die component of the 6th indent die component, described six indent die components are located in the groove of outer die;
Respectively establish a connection elastomer between between between bottom first indent die component and the second indent die component, bottom the first indent die component and the 3rd indent die component, bottom the first indent die component and the 4th indent die component, bottom the second indent die component and the 5th indent die component and bottom the second indent die component and the 6th indent die component, six make described interior die form the tetrahedron grooved frame that can expand and shrink by five connection elastomers; Slope inwardly below the outer wall of six indent die components, interior die outside is made to form one or four limit prismatic table shape, the gradient of the gradient of outer wall and described outer die groove cell wall is adaptive, makes to fit with outer die at connection die under elastomeric effect, thus better extrudes workpiece.
Six indent die components form splicing seams in bottom, below these six indent die components, be respectively provided with an elastomer, and the uniformity that in ensureing, six indent die components of die decline, is convenient to the processing of workpiece.
Abrasionproof backing plate and wear-resisting slide rail is provided with from top to bottom successively at described interior die bottom portion of groove, wear-resisting slide rail and abrasionproof backing plate is provided with from top to bottom successively between interior die and the elastomer of interior female bottom, arranging wear-resisting slide rail and abrasionproof backing plate is to reduce workpiece and interior die, frictional force between interior die and backing plate when workpiece bows is shaping, thus the wearing and tearing of anti-locking apparatus.
Described outer die comprises the first outer die component, the second outer die component, the 3rd outer die component, die component, the 5th outer die component and the 6th outer die component all round, the longitudinal section of six outer die components is the bending structure that an interior angle is a bit larger tham 90 °, and similar bending angle is greater than " L " type structure in 90 °, first outer die component and the second outer die component opposed, 3rd outer die component and the opposed both sides at the first outer die component of die component all round, 5th outer die component and the opposed both sides at the second outer die component of the 6th outer die component, described six outer die components are placed on the backing plate of press operation platform, the outer of six outer die components is respectively supported by the adjustable support bar be arranged on the mount pad of backing plate six end, backing plate is placed on the workbench of press, support bar one end is threaded with the mount pad on backing plate, and pass through fastening nuts, described six outer die Component compositions are made to become described outer die grooved frame.By the groove width of the outer die of the adjustable in length of adjusting screw(rod).In fact,
Preferably, interior die and outer die flush upper end when the original state of not suppressing.
Bottom in the groove of described outer die has locating piece.
The processing method of the grooved workpiece of these four sides can refer to Fig. 2-Fig. 6, for:
1, with reference to Fig. 2, upper die combination is contained on a press, press slide connects expanded core top, the average board-like workpiece to be processed cutting four angles is laid in the upper port place (being the upper port place being placed on outer die in the present embodiment) of lower die combination, now the external dimensions of expansion sleeve is a1, a1 is minimum, and indent die cavity is wide is that b1, b1 are maximum.
2, with reference to Fig. 3, during for compacting, press slide is descending, and drive expanded core and expansion sleeve DL synchronization, expansion sleeve first contacts workpiece to be processed; Press slide continues descending, now the stamping press of press does not reach the yield strength of workpiece to be processed, therefore expanded core is now only had to continue descending, expansion sleeve is motionless, elastic component in expanded core chute shrinks, and workpiece does not bend, when expanded core comes downwards to the bottom of expansion sleeve, extended by expansion sleeve opening, expanded core also touches workpiece to be processed; Now the external dimensions of expansion sleeve is that a2, a2 are maximum, a2 > a1, and indent die cavity is wide is b2, b2=b1;
3, with reference to Fig. 4, press slide continues descending, press stamping press exceedes the yield strength of workpiece to be processed, workpiece bends and makes (in order to make workpiece to be processed 4 can enter in the deep trouth of mould, its groove width of initial position of mould should be a bit larger tham the width of expanded core lower end in practical operation) in its groove entering interior die by expansion sleeve and expanded core in the lump; Now, the external dimensions of expansion sleeve is a3, a3=a2, and indent die cavity is wide is b3, b3=b1;
4, with reference to Fig. 5, press slide continues descending, exceed the resistance of interior die bottom elastomeric, interior die is descending, descending along with interior die, interior die inwardly compresses by outer die, connection elastomer contracts between interior die, when interior die goes downwards to outer female bottom locating piece (i.e. terminating point), the groove width of interior die is minimum, workpiece is squeezed tightly between banding on interior die outer wall, forms predetermined grooved part.Now the external dimensions of expansion sleeve is a4, a4=a2=a3, and indent die cavity is wide is that b4, b4 are minimum, b4 < b3, then workpiece groove width is minimum;
5, the material returned: with reference to Fig. 6; interior die bottom elastomeric carries out elastic recovery; interior die is popped up; elastic component simultaneously in expanded core chute replys deformation; expanded core and expansion sleeve relative motion is made to reply original state; along with the continuous rise of interior die; indent die cavity is wide becomes large gradually; after elastomer replys deformation completely; interior die returns to initial position; groove width reaches again maximum, then expansion sleeve and expanded core is taken out of from the groove of lower die combination under the lifting force of press slide, then takes out workpiece.Because the groove width of now workpiece is minimum, the groove width of interior die is b5, b5=b1, minimum, and the external dimensions of the groove width of outer die (i.e. the external dimensions of expansion sleeve) is a5, a5=a1, maximum, therefore can easily upper die combination be taken out from lower die combination, workpiece also can easily be removed.When upper die combination is taken out of by press slide from lower die combination, on the one hand by the connection function of the elastic component in the longitudinal chute of spring lever, expanded core and expanded core, the upper pulling force upwards lifting expansion sleeve by expanding platform cap on the other hand, upper die combination is taken out of by completely from lower die combination in acting in conjunction, spring lever can be prevented like this to be biased distortion, and then to ensure effectively exiting of upper die combination.
The present invention utilizes Mould Machining workpiece, and process is simple, and efficiency is high, the specification of workpieces of production, not yielding, does not need the trouble of correcting, has saved cost.Adopt press to drive, achieve the automation of whole device.Adopt the processing method of this device especially remarkable in the effect of processing shallow/deep groove type workpiece.
Method of the present invention can process the workpiece of 90 °, if the interior angle of interior die is designed large a little a bit, such as 88 °, 89 ° etc., because workpiece also can outwards launch a little a bit after machining, after launching, workpiece interior angle can reach 90 °.
Because expansion sleeve and the equal width of outer die are all can adjustment structure, by regulating the groove width of expansion sleeve and outer die, the workpiece of different groove width can be processed.
According to embodiment 2, the present invention also easily carries out the cylindrical workpiece that suitable deformation processing is less than or equal to 90 °.
When processing multiaspect grooved workpiece or cylindrical workpiece, the workpiece of interior die lobe number more multi-processing is more perfect.
The shape of the component of expansion sleeve, indent die component and outer die component can be also other, is not limited to above-described embodiment.
The elastomer of described interior female bottom preferably adopts polyurethane rubber block.
This method can adopt hydraulic press, hydraulic press etc.
Connect by realizing elasticity by the mode of elastic component circumference serial connection between many lobes lobe body of described expansion sleeve, form the structure of for example elastic hand string, relative retaining mechanism coordinates with the dependency structure of an independent transverse support bar and expanded core compared with above-described embodiment.
The processing method of this device is adopted to process the workpiece such as steel plate.
Adopt the processing method of this device also can process Polyhedral grooved workpiece, as five shapes, six shapes.
For above-mentioned two embodiments, expanded core can also be square or cuboid, but relatively above-mentioned two embodiments of this structure have a shortcoming to be exactly point cantact between expanded core and expansion sleeve, and easily wear and tear expansion sleeve.Or the mesopore of expansion sleeve is isometrical hole, and expanded core is wedge shape, certainly, also there is the problem of above-mentioned wearing and tearing in this.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. suppress the method that angle of bend is less than or equal to 90 ° of channel sections, it is characterized in that, the device of compacting comprises the upper die combination of coaxial setting and lower die combination, described upper die combination comprises: expansion sleeve, and be many valvular structures that elasticity connects, outside is up-narrow and down-wide wedge mould, and expanded core, in the mesopore of described expansion sleeve, in the mesopore of expansion sleeve and expanded core, at least one is up big and down small wedge shape, described expanded core when the original state of not suppressing minimum point height higher than expansion sleeve minimum point height, expanded core and described expansion sleeve matched in clearance, and relative retaining mechanism is housed between the two, described relative retaining mechanism is: between the lobe body that expansion sleeve is opposed, be connected with transverse support bar, described expanded core is the structure in the middle part of in the of with longitudinal chute, in its longitudinal chute flexible, described transverse support bar is through longitudinal chute of described expanded core, withstand in the transverse support bar in the longitudinal chute of expanded core bottom described elastic component, described lower die combination comprises: interior die, and comprise many valve structures that elasticity connects, the groove of described interior die is the wedge-shaped slot with described expansion sleeve outer shape adaptation, and described expansion sleeve can be entered in the groove of inner groovy, with outer die, its groove is structure wide at the top and narrow at the bottom, and described interior die, in described outer die, has an elastomer in the groove of described outer die, the below of interior die,
Described drawing method comprises:
1) be contained on a punching mechanism by described upper die combination, punching mechanism connects the expanded core of described upper die combination, flat workpiece to be processed is laid in the upper port place of described lower die combination;
2) punching mechanism is descending, the expansion sleeve of die combination and expanded core DL synchronization in drive, expansion sleeve first contacts workpiece to be processed, and punching mechanism continues descending, now the stamping press of press does not reach the yield strength of workpiece to be processed, expanded core continues descending, and expansion sleeve is motionless, and the elastic component in expanded core chute shrinks, workpiece does not bend, when expanded core comes downwards to the bottom of expansion sleeve, extended by expansion sleeve, expanded core also touches workpiece to be processed;
3) punching mechanism continues descending, and press stamping press exceedes the yield strength of workpiece to be processed, and workpiece bends and makes in its groove entering interior die by expansion sleeve and expanded core in the lump;
4) punching mechanism continues descending, exceed the resistance of interior die bottom elastomeric, interior die is descending, descending along with interior die, interior die inwardly compresses by outer die, when interior die goes downwards to outer female bottom terminating point, workpiece is squeezed tightly between banding on interior die outer wall, forms predetermined grooved part;
5) interior die bottom elastomeric carries out elastic recovery; interior die is popped up; elastic component simultaneously in expanded core chute replys deformation; original state is replied in expanded core and expansion sleeve relative motion, and along with the continuous rise of interior die, indent die cavity is wide becomes large gradually; after described elastomer replys deformation completely; interior die is returned to initial position, then expansion sleeve and expanded core is taken out of from the groove of lower die combination indent mould under the lifting force of punching mechanism, then takes out workpiece.
2. device according to claim 1, is characterized in that, realizes elasticity connect between many lobes lobe body lobe body of described expansion sleeve by following structure:
Connected by crossed strip bar between the lobe body that described expansion sleeve is opposed, described spring lever comprises described transverse support bar and spring; The concrete annexation of expansion sleeve and spring lever is: on the inwall of described expansion sleeve lobe body, be provided with inner small and outside big shoulder hole, described transverse support bar two ends put in the shoulder hole of two side lobe bodies respectively, and described spring is housed putting in the cross-brace boom end in shoulder hole macropore, often holding both ends of the spring that spacing back-up ring is housed, and the size of inner side limiting-position back-up ring is greater than the aperture of described shoulder hole aperture.
3. method according to claim 1, is characterized in that, connects between many lobes lobe body of described expansion sleeve by realizing elasticity by the mode of elastic component circumference serial connection.
4. method according to claim 3, it is characterized in that, described relative retaining mechanism also comprises the up stop bit locking auxiliary body of expanded core relative to expansion sleeve, described up stop bit locking auxiliary body is specially: have the expansion platform cap that is greater than upper dimension bottom described expanded core, form the enlarging that is greater than upper part bottom described expansion sleeve mesopore, described expansion platform cap matches with described enlarging;
In step 5) in punching mechanism by the expansion platform cap of replying expanded core when the expansion sleeve of original state and expanded core are taken out of from the groove of lower die combination indent mould for expansion sleeve provides upper pulling force.
5. method according to claim 4, is characterized in that, is flat bottom described expansion platform cap.
6. the method according to any one of claim 1-5, is characterized in that, the mesopore of described expansion sleeve and expanded core are up big and down small wedge shape.
7. the method according to any one of claim 1-5, is characterized in that, the outside longitudinal section of described interior die is up big and down small trapezoidal, and the gradient of its outer wall gradient and described outer die groove cell wall is adaptive.
8. the method according to any one of claim 1-5, is characterized in that, has locating piece at the bottom portion of groove of described outer die, and described locating piece is the descending terminating point of interior die.
9. the method according to any one of claim 2-5, is characterized in that, described outer die is many valvular structures, and many lobes are supported by horizontal adjustable support bar outward; There is external screw thread the cross-brace end of described connection many flaps expansion sleeve, and external screw thread, outside described spacing back-up ring, coordinates with the external screw thread of described transverse support bar and adjusting nut is housed.
10. the method according to any one of claim 1-5, is characterized in that, punching mechanism is press.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141211.1A CN104785628B (en) | 2015-01-30 | 2015-03-27 | Method for pressing groove profile with bending angle smaller than or equal to 90 degrees |
| PCT/CN2015/098074 WO2016155366A1 (en) | 2015-03-27 | 2015-12-21 | Method for pressing channel section with bending angle smaller than or equal to 90 degrees |
| US15/716,593 US20180078985A1 (en) | 2015-03-27 | 2017-09-27 | Method for pressing groove section with bending angle smaller than or equal to 90 degrees |
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| CN201510052393 | 2015-01-30 | ||
| CN2015100523935 | 2015-01-30 | ||
| CN201510141211.1A CN104785628B (en) | 2015-01-30 | 2015-03-27 | Method for pressing groove profile with bending angle smaller than or equal to 90 degrees |
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| CN104785628A true CN104785628A (en) | 2015-07-22 |
| CN104785628B CN104785628B (en) | 2017-05-03 |
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| CN104785628B (en) | 2017-05-03 |
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Denomination of invention: Method for pressing groove profile with bending angle less than or equal to 90 deg Effective date of registration: 20220524 Granted publication date: 20170503 Pledgee: Postal Savings Bank of China Limited Hai'an sub branch Pledgor: NANTONG CHANG RONG MECHANICAL AND ELECTRICAL Co.,Ltd. Registration number: Y2022980006228 |