CN110026521A

CN110026521A - Combined punch pin device with straight section heavy wall hemispherical head

Info

Publication number: CN110026521A
Application number: CN201910428929.7A
Authority: CN
Inventors: 刘金豪; 孙嫘; 毛闯
Original assignee: Erzhong Deyang Heavy Equipment Co Ltd
Current assignee: Erzhong Deyang Heavy Equipment Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2019-07-19
Anticipated expiration: 2039-05-22
Also published as: CN110026521B

Abstract

Combined punch pin device of the present invention with straight section heavy wall hemispherical head, belongs to stamping equipment field, it is therefore an objective to be conducive to demoulding.Including core model and spherical die；Spherical die includes N block die unit, and N block die unit is arranged around the central axes of spherical die, and inside die cavity bread encloses the die cavity to form taper；Core model includes core compatible with die cavity, core and die unit cooperate along the axial activity of die cavity, connection structure is provided between core and each die unit, core is flexibly connected with each die unit through connection structure, and by connection structure as core and the die unit position limiting structure being axially moved and the driving structure of each die unit radial motion.The present invention is arranged by spherical die by die unit piecemeal, and core and die cavity activity cooperate, when so that core lifting, each die unit is radially interior to be received, and generates gap before the outer surface of spherical die and the inner surface of hemispherical head, spherical die is detached from end socket forging inner surface, convenient for demoulding.

Description

Combined punch pin device with straight section heavy wall hemispherical head

Technical field

The invention belongs to stamping areas, the Combined punch pin device particularly with straight section heavy wall hemispherical head.

Background technique

Large thick-wall hemispherical head be the pressure vessel and equipments such as petroleum, chemical industry, boiler and nuclear power important part it One, with the raising of these equipment design requirements, the requirement to end socket is also correspondingly improved, to guarantee the steady of such key equipment Dingan County is complete, and end socket is manufactured using the integrally formed mode of hot-stretch.

The mold of hot-stretch monolithic molding heavy wall hemispherical head is as shown in Figure 1, mainly including solid punch 6, stretching at present Circle, washer 5 etc., this kind of structure formed punch use whole design, demoulding difficult problem in straight section position after end socket hot-stretch forming, i.e., Make to take the formed punch before certain taper, forming is arranged in formed punch forming head straight section position to spray the measures such as lubricant similarly not It can effectively solve, could smoothly end socket be demoulded by needing to place a period of time, and it is serious or even can not demould always, cause to produce Efficiency reduces and waste of material.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of Combined punch pin device with straight section heavy wall hemispherical head, Conducive to demoulding.

The technical solution adopted by the present invention is that: the Combined punch pin device with straight section heavy wall hemispherical head, including core model and Spherical die；The spherical die includes N block die unit, and each piece of die unit includes outside forming surface and inside die cavity Face；N block die unit is arranged around the central axes of spherical die, and outside forming surface surrounds the outer surface to form spherical die, Inside die cavity bread encloses the die cavity to form taper；

The core model includes core, and the core is adapted with die cavity, and the core and die unit are axially living along die cavity Dynamic cooperation is provided with connection structure between the core and each die unit, core and each die unit are through the connection structure The position limiting structure and each die unit for being flexibly connected, and being axially moved by the connection structure as core and die unit The driving structure of radial motion.

Further, the connection structure includes the platform sling for being set to die unit and the lifting lug for being set to core model；It is described Platform sling is set between outside forming surface and inside die cavity face, and the lifting lug is set to core periphery；Length is provided on platform sling Circular hole, the slotted hole is upwardly extended and is tilted to the outside of die unit center of gravity, and the level between two centers of circle of slotted hole Distance is δ

/ 2,；Lifting hole(eyelet) is provided on lifting lug；Pin shaft is provided between the lifting hole(eyelet) and slotted hole, the pin shaft is along oval Hole length direction and slotted hole activity cooperate, and each die unit is rotatably assorted with core centered on pin shaft and is connect.

Further, the outside forming surface of the die unit and inside die cavity bread enclose to form hollow region, described to hang Plate is located in hollow region, and links into an integrated entity with outside forming surface and inside die cavity face.

Further, along the circumferential direction of die unit, the both ends of each die unit are provided with support plate, the support plate position It in hollow region, and links into an integrated entity with outside forming surface and inside die cavity face, and is located at the support plate at die unit both ends It is symmetrical about platform sling.

Further, the core from top to bottom successively include cylindrical section cylindrical, in cone conical section and Spherical ball section；

The support plate and platform sling include the medial surface adjacent with die cavity, and the medial surface is suitable with the cylindrical section of core The cambered surface matched.

Further, the core is integrally formed part, from top to bottom successively includes cylindrical section cylindrical, is in circular cone The conical section of shape and spherical ball section；The lifting lug is installed on the periphery of cylindrical section.

Further, the vertical distance at the cylindrical section and the transition face of conical section to lifting hole(eyelet) center is H1；It is described oval The vertical distance in two centers of circle in hole is H1.

Further, the top of core is provided with pedestal；The vertical range of the center of circle of the lifting hole(eyelet) to base end face is H0；The vertical range in the center of circle and platform sling upper surface that the slotted hole is located above is H0.

Further, the N is equal to 3.

Further, spherical die bottom be provided centrally with penetrated through by die cavity on the outside of forming surface location hole.

The beneficial effects of the present invention are: it is of the invention, it is arranged by spherical die by die unit piecemeal, core and mold list The die cavity activity cooperation that member surrounds, when so that core axially being pushed along die cavity, the radially outer expansion of each die unit, spherical die Diameter become larger, realize end socket forging forming；When core lifts, each die unit is radially interior to be received, the outer surface of spherical die Gap is generated before with the inner surface of hemispherical head, and spherical die is detached from end socket forging inner surface, convenient for demoulding.

The assembling of die unit and core model is realized by lifting lug and platform sling, and passes through lifting hole(eyelet), slotted hole and pin shaft thereon It using offset center of gravity setting, realizes and realizes that the diameter of spherical die becomes smaller by gravity, do not need power source input.

Spherical die is arranged by die unit piecemeal, and the setting of the hollow region of die unit, compared to previous solid punching Nose heave amount mitigates significantly.

Detailed description of the invention

Fig. 1 is prior art construction schematic diagram；

Fig. 2 is schematic structural view of the invention；

Fig. 3 is core mold structure schematic diagram；

Fig. 4 is the bottom view of Fig. 3；

Fig. 5 is the A-A cross-sectional view of Fig. 4；

Fig. 6 is die unit structural schematic diagram；

Fig. 7 is the top view of Fig. 6；

Fig. 8 is the A-A cross-sectional view of Fig. 7；

Fig. 9 is partial enlarged view at the B of Fig. 8；

Figure 10 is pressed status schematic diagram of the present invention；

Figure 11 is that the present invention lifts status diagram.

In figure, core model 1, core 11, cylindrical section 111, conical section 112, ball section 113, pedestal 12, lifting lug 13, lifting hole(eyelet) 131, spherical die 2, die unit 21, outside forming surface 211, inside die cavity face 212, die cavity 213, platform sling 22, slotted hole 221, support plate 23, medial surface 231, location hole 24, pin shaft 3, end socket forging 4, washer 5, formed punch 6.

Specific embodiment

It is as follows that the present invention is described further with reference to the accompanying drawings and examples:

Combined punch pin device with straight section heavy wall hemispherical head, such as Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 institute Show, including core model 1 and spherical die 2；The spherical die 2 includes N block die unit 21, and each piece of die unit 21 includes outer Side forming surface 211 and inside die cavity face 212；N block die unit 21 is arranged around the central axes of spherical die 2, and outside forms Face 211 surrounds the outer surface for forming spherical die 2, and inside die cavity face 212 surrounds the die cavity 213 for forming taper；

The core model 1 includes core 11, and the core 11 is adapted with die cavity 213, the core 11 and die unit 21 Along the axial activity cooperation of die cavity 213, connection structure, core 11 and each mould are provided between the core 11 and each die unit 21 Tool unit 21 is flexibly connected through the connection structure, and is axially moved by the connection structure as core 11 and die unit 21 21 radial motion of position limiting structure and each die unit driving structure.

The present invention, spherical die 2 arranged by N block die unit 21 around the central axes of spherical die 2, N block mould The outside forming surface 211 of tool unit 21 surrounds the outer surface for forming spherical die 2, the outer surface and end socket forging 4 to be formed Inner surface dimension and shape it is identical, including annulus section compatible with 4 straight section of end socket forging and with 4 ball shape of end socket forging The spherical segment of adaptation.

Inside die cavity face 212 surrounds the die cavity 213 for forming taper, and die cavity 213 is adapted with the core 11 of core model 1, i.e. core Body 11 is plugged in die cavity 213, forms complete formed punch.When axially downwardly driving core 11 along die cavity 213, since core 11 is bored The taper configurations of shape and die cavity 213, each die unit 21 expands outwardly, at this point, the ball of the spherical segment of the outer surface of spherical die 2 Face diameter is equal with 4 internal diameter of end socket forging, and the outer surface of spherical die 2 is used for the molding of hemispherical head；Along die cavity 213 it is axial to When upper driving core 11, under the drive of connection structure, each die unit 21 is along contract, at this point, the outer surface of spherical die 2 Gap is generated before with the inner surface of hemispherical head, and spherical die 2 is detached from 4 inner surface of end socket forging, convenient for demoulding.

Die unit 21 and core model 1 arbitrarily can be assembled in one for hinge, bolt and hook etc. by connection structure The structure risen, optimal, the connection structure includes the platform sling 22 for being set to die unit 21 and the lifting lug for being set to core model 1 13；The platform sling 22 is set between outside forming surface 211 and inside die cavity face 212, and the lifting lug 13 is set to outside core 11 Week；As shown in figure 9, be provided with slotted hole 221 on platform sling 22, the slotted hole 221 upwardly extends and to 21 weight of die unit The outside of the heart tilts, and the horizontal distance between two centers of circle of slotted hole 221 is δ/2,；Lifting hole(eyelet) 131 is provided on lifting lug 13； Pin shaft 3 is provided between the lifting hole(eyelet) 131 and slotted hole 221, the pin shaft 3 is along 221 length direction of slotted hole and slotted hole 221 Activity cooperation, and each die unit 21 is rotatably assorted with core 11 centered on pin shaft 3 and is connect.

Make die unit 21 and core by the setting of lifting lug 13 and platform sling 22 convenient for the assembling of die unit 21 and core model 1 Mould 1 is at each composite entity, and lifting lug 13 and 22 structure of platform sling are simple, are easy to make, occupy little space.Platform sling 22 is set to outer Between side forming surface 211 and inside die cavity face 212, it is not take up 21 exterior space of die unit, not will increase the outer of spherical die 2 Size is enclosed, the more compact structure of spherical die 2 is made.Most of all, upwards to inclined slotted hole on the outside of center of gravity on platform sling 22 221 and 13 upper pin 3 of lifting lug setting, when so that above mentioning core 11, pin shaft 3 is moved to oval by the lower end of slotted hole 221 The upper end in hole 221, die unit 21 are in the state for hanging on core 11, are mounted at this time due to die unit 21 and core 11 Position radially elapses the horizontal distance of δ/2, so that die unit 21 is rotated along pin shaft 3 under gravity, thus The distance for shrinking δ/2 radially inward, inputs without external power supply.

Preferably, the outside forming surface 211 of the die unit 21 and inside die cavity face 212, which surround, forms hollow region, The platform sling 22 is located in hollow region, and links into an integrated entity with outside forming surface 211 and inside die cavity face 212.

The outside forming surface 211 of die unit 21 and inside die cavity face 212, which surround, forms hollow region, rushes with traditional solid Head is compared, and weight mitigates significantly.Meanwhile hollow region is the installation creation space of platform sling 22, ensure that die unit 21 Structural compactness.

In order to increase the contact surface of adjacent molds unit 21 so that each die unit 21 to contract back wall at spherical mold The accuracy of tool is high, it is preferred that along the circumferential direction of die unit 21, the both ends of each die unit 21 are provided with support plate 23, institute It states support plate 23 to be located in hollow region, and links into an integrated entity with outside forming surface 211 and inside die cavity face 212, and be located at mould The support plate 23 for having 21 both ends of unit is symmetrical about platform sling 22.

Support plate 23 increases the contact area of adjacent molds unit 21, so that the process received in each die unit 21 In, the degree that the fissure of displacement occurs for each die unit 21 reduces.And the support plate 23 at each 21 both ends of die unit is symmetrical about platform sling 22, So that the center of gravity of die unit 21 is located at medium position along its circumferential direction, avoids die unit 21 and tilted to its side.

Preferably, the core 11 is integrally formed part, includes successively from top to bottom cylindrical section 111 cylindrical, is in The conical section 112 of cone and spherical ball section 113.

Core 11 is integrally formed part, and the accuracy of 11 size of core can be effectively ensured.The conical section 112 of core 11 is set It sets, core 11 is enabled to provide the power moved horizontally when depressing for die unit 21.The conical section 112 and mold of core 11 The inside die cavity face 212 of unit 21 cooperates, and plays the role of being oriented to power transmission, when so that core 11 being depressed, the conical section of core 11 112 promotion die units 21 are radially expanded.And the installation that cylindrical section 111 is lifting lug 13 creates favorable conditions.

And the medial surface 231 of support plate 23 and platform sling 22 is the cambered surface being adapted to the cylindrical section 111 of core 11, such as Figure 10 and Shown in Figure 11, when the center of gravity of die unit 21 is close to core 11, the cylindrical section of medial surface 231 and core 11 under the effect of gravity 111 realize natures fitting, the conical section 112 of core 11 is separated with die cavity 213 at this time, when core depress H0 apart from when, core 11 Conical section 112 be bonded with die cavity 213, the realization of cylindrical section 111 of medial surface 231 and core 11 separates, and gap is δ/2, realizes Outside forming surface 211 is moved radially outward δ/2；When core lift H0 apart from when, medial surface 231 under the effect of gravity with core 11 Cylindrical section 111 realize nature fitting, outside forming surface 211 moves radially inwardly δ/2, and outside forming surface 211 and end socket are forged There are gap delta/2 in part 4, realizes demoulding.

The lifting hole(eyelet) 131 is located at the top of the cylindrical section 111 and the transition face of conical section 112, and the cylindrical section 111 Vertical distance with transition face to 131 center of lifting hole(eyelet) of conical section 112 is H1；Two centers of circle of the slotted hole 221 it is vertical away from From for H1.So that the distance that 11 vertical motion of core is as few as possible, just can reach the interior receipts under gravity of die unit 21 Purpose.

The top of core 11 is provided with pedestal 12；The vertical range of the center of circle of the lifting hole(eyelet) 131 to 12 bottom surface of pedestal is H0；The vertical range in the center of circle and 23 upper surface of platform sling 22 and support plate that the slotted hole 221 is located above is H0.

The structure, so that pedestal 12 is supported in support plate 23 and platform sling 22 support core jointly after core 11 pushes in place 11, it ensure that the reliability supported to core 11.Meanwhile the setting of pedestal 12, convenient for connecting with the press machine for providing pressure It connects.

Spherical die 2 can be by 4 pieces or more muti-piece die unit 21 forms, still, excellent for the ease of processing and using Choosing, the spherical die 2 is composed of 3 pieces of identical die units 21 around the central axes of spherical die 2.

In order to play positioning action to spherical die 2, the Combined punch pin device is avoided to deviate blank center, it is preferred that In being provided centrally with by the location hole 24 of forming surface 211 on the outside of the perforation of die cavity 213 for 2 bottom of spherical die.It, can when specifically used First to be installed with positioning pin to location hole 24 and blank center, the relative position of spherical die 2 and blank is locked, is then carried out Punch forming.

Claims

1. the Combined punch pin device with straight section heavy wall hemispherical head, it is characterised in that: including core model (1) and spherical die (2)； The spherical die (2) includes N block die unit (21), and each piece of die unit (21) includes outside forming surface (211) and interior Side form Cavity surface (212)；N block die unit (21) is arranged around the central axes of spherical die (2), and outside forming surface (211) is wrapped The outer surface to form spherical die (2) is enclosed, inside die cavity face (212) surrounds the die cavity (213) for forming taper；

The core model (1) includes core (11), and the core (11) is adapted with die cavity (213), the core (11) and mold Unit (21) is provided between the core (11) and each die unit (21) along die cavity (213) axial activity cooperation and connect knot Structure, core (11) are flexibly connected with each die unit (21) through the connection structure, and by the connection structure as core (11) driving structure of the position limiting structure and each die unit (21) radial motion that are axially moved with die unit (21).

2. the Combined punch pin device as described in claim 1 with straight section heavy wall hemispherical head, it is characterised in that: the connection Structure includes the platform sling (22) for being set to die unit (21) and the lifting lug (13) for being set to core model (1)；The platform sling (22) sets It is placed between outside forming surface (211) and inside die cavity face (212), the lifting lug (13) is set to core (11) periphery；It is hanging It is provided on plate (22) slotted hole (221), the slotted hole (221) upwardly extends and the outer inclination to die unit (21) center of gravity Tiltedly, the horizontal distance and between two centers of circle of slotted hole (221) is δ/2,；Lifting hole(eyelet) (131) are provided on lifting lug (13)；It is described It is provided between lifting hole(eyelet) (131) and slotted hole (221) pin shaft (3), the pin shaft (3) is along slotted hole (221) length direction and length Circular hole (221) activity cooperation, and each die unit (21) is rotatably assorted with core (11) centered on pin shaft (3) and is connect.

3. the Combined punch pin device as claimed in claim 2 with straight section heavy wall hemispherical head, it is characterised in that: the mold The outside forming surface (211) of unit (21) and inside die cavity face (212), which surround, forms hollow region, during the platform sling (22) is located at In empty region, and link into an integrated entity with outside forming surface (211) and inside die cavity face (212).

4. the Combined punch pin device as claimed in claim 3 with straight section heavy wall hemispherical head, it is characterised in that: along mold list The circumferential direction of first (21), the both ends of each die unit (21) are provided with support plate (23), and the support plate (23) is located at hollow area It in domain, and links into an integrated entity with outside forming surface (211) and inside die cavity face (212), and is located at die unit (21) both ends Support plate (23) is symmetrical about platform sling (22).

5. the Combined punch pin device as claimed in claim 4 with straight section heavy wall hemispherical head, it is characterised in that: the core It (11) from top to bottom successively include cylindrical section (111) cylindrical, in the conical section (112) of cone and the ball section of spherical shape (113)；

The support plate (23) and platform sling (22) include the medial surface (231) adjacent with die cavity (213), the medial surface (231) cambered surface to be adapted to the cylindrical section (111) of core (11).

6. the Combined punch pin device with straight section heavy wall hemispherical head as described in claim 2-4 any one claim, The part it is characterized by: core (11) is integrally formed includes successively from top to bottom cylindrical section (111) cylindrical, is in The conical section (112) of cone and the ball section (113) of spherical shape；The lifting lug (13) is installed on the periphery of cylindrical section (111).

7. such as the Combined punch pin device described in claim 5 or 6 with straight section heavy wall hemispherical head, it is characterised in that: described The vertical distance at cylindrical section (111) and the transition face of conical section (112) to lifting hole(eyelet) (131) center is H1；The slotted hole (221) Two centers of circle vertical distance be H1.

8. the Combined punch pin device as claimed in claim 7 with straight section heavy wall hemispherical head, it is characterised in that: in core (11) top is provided with pedestal (12)；The vertical range of the center of circle of the lifting hole(eyelet) (131) to pedestal (12) bottom surface is H0；It is described The vertical range in the center of circle and platform sling (22) upper surface that slotted hole (221) is located above is H0.

9. the Combined punch pin device with straight section heavy wall hemispherical head as described in claim 1-8 any one claim, It is characterized by: the N is equal to 3.

10. the Combined punch pin device as claimed in claim 9 with straight section heavy wall hemispherical head, it is characterised in that: in spherical shape Mold (2) bottom is provided centrally with the location hole (24) that outside forming surface (211) is penetrated through by die cavity (213).