CN208600518U

CN208600518U - For the cold combined type mold core structure for pushing away forming belt straight tube elbow

Info

Publication number: CN208600518U
Application number: CN201821180943.7U
Authority: CN
Inventors: 丛华
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-25
Filing date: 2018-07-25
Publication date: 2019-03-15
Anticipated expiration: 2028-07-25

Abstract

This creation disclose it is a kind of for the cold combined type mold core structure for pushing away forming belt straight tube elbow, combined type mold core structure include guide part, the first elbow module, the second elbow module, third elbow module and setting part.Fixed Combination formula mold insert structure is located at the position in bending channel.The nozzle of tubing is arranged to the guide part of combined type mold core structure, tubing is pushed into bending channel in a manner of cold push away, the curvature and pipe thickness of tubing are limited by the outer wall of combined type mold core structure and the inner wall of bending channel, and tubing is shaped into band straight tube elbow.It pulls out and is located at the guide part in straight tube elbow, and guide part interlocks the first elbow module and pulls out together.It pulls out and is located at the setting part in straight tube elbow, and the part that shapes interlocks the second elbow module and pulls out together.It takes out with the third elbow module in straight tube elbow, to obtain completely band straight tube elbow.Above-mentioned technology solves the problems, such as the forming with straight tube elbow, demoulding and outer arc reduction.

Description

For the cold combined type mold core structure for pushing away forming belt straight tube elbow

Technical field

This creation is related to a kind of mold insert structure more particularly to a kind of for the cold combined type mold core for pushing away forming belt straight tube elbow Structure.

Background technique

In the prior art, there are no the mature manufacturing method with straight tube elbow, and universal common elbow and with straight Pipe bend is defined as two different products in affiliated industry, and the most common prior art to the common elbow of production has following Several ways:

First way is that formula technology is pulled out in rotation, and the bending machine of the prior art is only capable of that the radius of curvature of the elbow after shaping is allowed to reach Wall thickness reduction to the size close to 1.5 times of elbow diameters, and on the outside of elbow will be more than 50%, not meet international standard completely The requirement of specification.Such elbow can be only applied to low side or civilian industrial field, and can not apply industrial high request, War industry or the construction object for transporting corrosive liquids.

The second way is cold push technology, is to be intended to tubulation material to be directly pushed into the mold with bend by pressure, pipe Material is limited by the outside of the mold with bend, be will receive the limitation of the mold with bend in the tubing of pipe bent position and is generated change When shape, i.e. tubing carry out elbow manufacture, increase mold core inside the tubing as limitation, in the state of making pipe deformations, tubing to It is interior to be limited by mold core, excessive deformation in no normal tubes, and the then limitation by bend is deformed outward, tubing needs mating die Cored structure and outer mold carry out moulding limitation, reduce the outside wall thickness reduction of tubing to the greatest extent, to meet in codes and standards. The problem of although mode of above-mentioned increase mold core can solve the wall thickness reduction on the outside of elbow, but can not make and make band straight tube Elbow, because the mold core in elbow can be stuck in the part of straight tube, and can not carry straight tube after having made with straight tube elbow It is taken out in elbow.

The third is flower bud type inner core, and the flower bud type inner core is equally used for 90 degree of elbow depolings and uses, be will split into it is more The mold insert structure at a position first assembles, then by hydraulic way carrying mold cores structure, is intended to tubulation material and passes through mold insert structure and mould Tool carry out it is cold push into shape elbow after, then withdraw the hydraulic pressure support power of mold insert structure, and disassemble mold insert structure, and sequentially from elbow Take out mold insert structure.But band straight tube elbow still can not be manufactured by this method, and overall technology and structure are too many and diverse, And mold core also makes us querying its feasibility in disengaging elbow process, it is likely that is not achievable technology in actual production.

The processing method of above-mentioned several prior arts can only all manufacture common elbow, and can not manufacture with the curved of straight tube Head, reason are that the both ends with straight tube elbow are also respectively provided with the straight tube for being equivalent to pipe diameter length, lead to the mould of the prior art Core can not carry the disengaging of straight tube elbow inner core pulling after the completion of processing procedure.

Although installing and using the selectivity with apparent convenience and connection type, existing skill with straight tube elbow Art, which is not yet found not only, can guarantee that product outer arc reduction is up to standard, but also the good method of the smooth core_pulling demoulding of energy.

Utility model content

To solve the above-mentioned problems, this creation provides a kind of for the cold combined type mold core knot for pushing away forming belt straight tube elbow Structure, combined type mold core structure include: guiding straight pipe, elbow section and setting section.Being oriented to straight pipe has guide part, the first connection Bar and the first shaft, one end of guide part have the first groove, and up and down two in the first groove are fixed at the both ends of the first shaft Inner sidewall, first connecting rod have the first kidney slot and the first fixed perforation, the first kidney slot and the first fixed position respectively of perforating In the both ends of first connecting rod, first connecting rod is located at the first groove, and the first shaft wears the first kidney slot of first connecting rod, First shaft is along shift reciprocately in the first kidney slot；Elbow section has the first elbow module, the second elbow module and third curved Head module, one end of the first elbow module are bonded one end of the second elbow module, and the first elbow module and the second elbow module are pasted Together in the same side of third elbow module, the other end of the first elbow module has the first pivotal axis and the first recess, the first pivot Two inner sidewall up and down in the first recess is fixed at the both ends of shaft, and the first pivotal axis wears the fixed perforation of first connecting rod, First connecting rod is pivoted relative to the first elbow module, and the other end of the second elbow module is recessed with the second pivotal axis and second Mouthful, two inner sidewall up and down in the second recess is fixed at the both ends of the second pivotal axis；And there is setting section setting part, second to connect Extension bar and the second shaft, the one end for the part that shapes have the second groove, and the both ends of the second shaft are fixed on upper and lower in the second groove Two inner sidewalls, the second connecting rod have the second kidney slot and the second fixed perforation, the second kidney slot and the second fixed perforation difference Positioned at the both ends of the second connecting rod, the second connecting rod is located at the second groove, and the second shaft wears the second kidney-shaped of the second connecting rod Hole, for the second shaft along shift reciprocately in the second kidney slot, the second pivotal axis of the second elbow module wears the second fixed perforation, Second connecting rod is pivoted relative to the second elbow module.

Wherein, guiding straight pipe is directed away from the direction movement of elbow section, and guide part interlocks the first shaft along the first waist One end, the one end of the first shaft in the first kidney slot are moved in shape hole, the first shaft drives first connecting rod, and first connects The fixed perforation of the first of extension bar drives the first pivotal axis, and the first pivotal axis interlocks the first elbow module, and the first elbow module passes through First pivotal axis is switched to the moving direction of guide part, and the first elbow module and is detached from third along the movement routine of guide part Elbow module and the second elbow module.

Wherein, setting section is directed away from the direction movement of elbow section, and setting part interlocks the second shaft along the second kidney slot It is inside moved to one end, the one end of the second shaft in the second kidney slot, the second shaft drives the second connecting rod, the second connecting rod The second fixed perforation drive the second pivotal axis, the second pivotal axis interlocks the second elbow module, and the second elbow module passes through second Pivotal axis is switched to the moving direction of setting part, and the second elbow module and is detached from third elbow along the movement routine of setting part Module.

The combined type mold core structure of this creation, which has, to be easy to combine and disassemble, and combined type mold core structure is made for cold pushing The elbow with straight tube is made by combined type mold core structure and mold in elbow with straight tube, tubing.This part band straight tube is curved The shape of the bent part of head mold core is not exposed to the limitation in straight tube angle, i.e. the shape of bending part will not be because of bending angle Spend and the limitation that is subject to and be stuck in the pipe of straight tube, can smoothly deviate from the pipeline of straight tube.So by combined type mold core structure with Simple mechanical structure mode piecemeal is detached from the elbow for having straight tube, to complete the complete processing procedure with straight tube elbow.This creation can Simplify the cold production process for pushing away forming belt straight tube elbow.

Detailed description of the invention

Attached drawing described herein is used to provide to further understand this creation, constitutes a part of this creation, this wound The exemplary embodiment and its explanation of work do not constitute the improper restriction to this creation for explaining this creation.In the accompanying drawings:

Fig. 1 its be this creation the perspective view for the cold combined type mold core structure for pushing away forming belt straight tube elbow.

Fig. 2 its be this creation the decomposition diagram for the cold combined type mold core structure for pushing away forming belt straight tube elbow.

Fig. 3 its be this creation the combination diagram for the cold combined type mold core structure for pushing away forming belt straight tube elbow.

Fig. 4 its be this creation the schematic diagram with straight tube elbow cold forming equipment with combined type mold core structure.

Fig. 5 its be this creation the cold manufacturing step flow chart one for pushing away manufacturing process with straight tube elbow.

Fig. 6 its be this creation the cold manufacturing step flowchart 2 for pushing away manufacturing process with straight tube elbow.

Fig. 7 its be this creation the cold manufacturing process schematic diagram one for pushing away manufacturing process with straight tube elbow.

Fig. 8 its be this creation the cold manufacturing process schematic diagram two for pushing away manufacturing process with straight tube elbow.

Fig. 9 its be this creation the cold manufacturing process schematic diagram three for pushing away manufacturing process with straight tube elbow.

Figure 10 its be this creation the cold manufacturing process schematic diagram four for pushing away manufacturing process with straight tube elbow.

Figure 11 its be this creation the cold manufacturing process schematic diagram five for pushing away manufacturing process with straight tube elbow.

Figure 12 its be this creation the cold manufacturing process schematic diagram six for pushing away manufacturing process with straight tube elbow.

Figure 13 its be this creation the cold manufacturing process schematic diagram seven for pushing away manufacturing process with straight tube elbow.

Figure 14 its be this creation the cold manufacturing process schematic diagram eight for pushing away manufacturing process with straight tube elbow.

Figure 15 its be this creation the cold manufacturing process schematic diagram nine for pushing away manufacturing process with straight tube elbow.

Figure 16 its be this creation the cold manufacturing process schematic diagram ten for pushing away manufacturing process with straight tube elbow.

Specific embodiment

Multiple embodiments of this creation, as clearly stated, the details in many practices will be disclosed with schema below It will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit this creation.Also It is to say, in some embodiments of this creation, the details in these practices is non-essential.In addition, for the sake of simplifying schema, Some existing usual structures and component will be painted in the drawings in simply illustrative mode.

Referring to Fig. 1, it is the perspective view for the cold combined type mold core structure for pushing away forming belt straight tube elbow of this creation. As shown, present embodiment provide it is a kind of for the cold combined type mold core structure 1 for pushing away forming belt straight tube elbow.Combined type mold core Structure 1 carries out the cold mold for pushing into shape as tubing under assembled state.In tubing is cold push into shape after the completion of, combined type mold core knot Structure 1 can be disassembled by simple mechanical structure in the pipe with straight tube elbow again, and make the combined type mould after dismantling 1 energy piecemeal of cored structure is detached from band straight tube elbow, so completes the cold processing procedure for pushing away forming belt straight tube elbow.

Fig. 2 and Fig. 3 are please referred to, is point for the cold combined type mold core structure for pushing away forming belt straight tube elbow of this creation Solve schematic diagram and combination diagram.In this present embodiment, include for the cold combined type mold core structure 1 for pushing away forming belt straight tube elbow It is oriented to straight pipe 11, elbow section 13 and setting section 15.Being oriented to straight pipe 11 has guide part 111, first connecting rod 113 and first One end of shaft 115, guide part 111 has the first groove 110, and the both ends of the first shaft 115 are fixed in the first groove 110 Upper and lower two inner sidewall, first connecting rod 113 have the first kidney slot 1131 and the first fixed perforation 1133, the first kidney slot 1131 It is located at the both ends of first connecting rod 113 with the first fixed perforation 1133, the kidney-shaped length of the first kidney slot 1131 is greater than the The aperture of one fixed perforation 1133.First connecting rod 113 is located at the first groove 110, and the first shaft 115 wears first connecting rod 113 the first kidney slot 1131, the first shaft 115 is along shift reciprocately in the first kidney slot 1131.Wherein first connecting rod 113 Can be for cylindrical, flat or chain, the connecting structure as guide part 111 and the first elbow module 131.

Elbow section 13 has the first elbow module 131, the second elbow module 133 and third elbow module 135, and first is curved One end of head module 131 is bonded one end of the second elbow module 133, and the first elbow module 131 is bonded with the second elbow module 133 In the same side of third elbow module 135,135 groups of the first elbow module 131, the second elbow module 133 and third elbow module At the mold core with curvature.The other end of first elbow module 131 has the first pivotal axis 1311 and the first recess 1313, the Two inner sidewall up and down in the first recess 1313 is fixed at the both ends of one pivotal axis 1311, and the first pivotal axis 1311 wears first The fixed perforation 1133 of connecting rod 113, first connecting rod 113 is pivoted relative to the first elbow module 131, the second elbow module 133 other end has the second pivotal axis 1331 and the second recess 1333, and it is recessed that the both ends of the second pivotal axis 1331 are fixed on second Two inner sidewall up and down in mouth 1333.Wherein one end of the first elbow module 131 has the first locating notch 1312, the second elbow One end of module 133 has the second locating notch 1332, and the first locating notch 1312 and the second locating notch 1332 are combined into fixed Position slot 130, has positioning pin 132 in the middle part of third elbow module 135, and positioning pin 132 is embedded in locating slot 130, so facilitates The fixation that mutually fits between first elbow module 131, the second elbow module 133 and third elbow module 135.

The section 15 that shapes has setting part 151, the second connecting rod 153 and the second shaft 155, and one end of setting part 151 has Two inner sidewall up and down in the second groove 150, the second connecting rod 153 are fixed in second groove 150, the both ends of the second shaft 155 With the second kidney slot 1531 and the second fixed perforation 1533, the second kidney slot 1531 is located at the second fixed perforation 1533 The both ends of second connecting rod 153, the kidney-shaped length of the second kidney slot 1531 are greater than the aperture of the second fixed perforation 1533.Second connects Extension bar 153 is located at the second groove 150, and the second shaft 155 wears the second kidney slot 1531 of the second connecting rod 153, the second shaft 155 along shift reciprocately in the second kidney slot 1531, and the second pivotal axis 1331 of the second elbow module 133 wears the second fixation and wears Hole 1133, the second connecting rod 153 are pivoted relative to the second elbow module 133.

In present embodiment, one end of guiding straight pipe 11 has the first recessed shoulder 121, the first elbow module 131 and the The common end of triple section arm module 135 has the first convex shoulder 141, and the first recessed shoulder 121 and the first convex shoulder 141 are chimeric mutually, so Guiding straight pipe 11 is combined with each other with elbow section 13.The length of the protrusion of first convex shoulder 141 is slightly less than the recess portion of the first recessed shoulder 121 Depth, the length of protrusion is less than the first shaft 115 along movable distance d1 in the first kidney slot 1131, such guide part After 111 115 elder generation of the first shaft is along 1131 intrinsic displacement distance d1 of the first kidney slot, the first convex shoulder 141 and the first recessed shoulder 121 are It completely disengages, so the first fixed 1133 the first pivotal axis of pulling 1311 or relative to pivoting first of portalling of the first shaft 115 Pivotal axis 1311, the above-mentioned influence for making flowing mode not by the first convex shoulder 141 of the first elbow module 131.Furthermore second is curved Head module 133 and the common end of third elbow module 135 have the second convex shoulder 143, and one end of setting part 151 has second Recessed shoulder 161, the second convex shoulder 143 and the second recessed shoulder 161 are chimeric mutually, are so shaped section 15 and are combined with each other with elbow section 13.Second The length of the protrusion of convex shoulder 143 is slightly less than the depth of the recess portion of the second recessed shoulder 161, and the length of protrusion is less than 155 edge of the second shaft Movable distance d2 in the second kidney slot 1531.The continuous action relation of this structure is identical to the first kidney slot described in leading portion 1131, the relationship of the first convex shoulder 141 and the first recessed shoulder 121 is so shaped part 151 by the second connecting rod 153 relative to second When elbow module 133 pivots, it is not exposed to the influence of the second convex shoulder 143 of the second elbow module 133.It is worth noting that The depth of section of first convex shoulder 141 and the second convex shoulder 143 is greater than the semicircle height of combined type mold core structure 1, and the first convex shoulder 141 and second the circle slightly end section height of convex shoulder 143 be less than or equal to the semicircle height of combined type mold core structure 1, so exist First elbow module 131 or the second elbow module 133 just will not be curved with band straight tube when pulling out in the band straight tube elbow from after shaping The wall surface of head generates interference.

Referring to Fig. 4, it is the signal with straight tube elbow cold forming equipment with combined type mold core structure of this creation Figure.As shown, in this present embodiment, being used to push away with the cold of straight tube elbow to tubing 3 with straight tube elbow cold forming equipment 2 Forming.Band straight tube elbow cold forming equipment 2 has combined type mold core structure 1.Band straight tube elbow cold forming equipment 2 further includes first Die holder 17, the second die holder 19, the first power mould group 21 and the second power mould group 23.First die holder 17 has the first mold conduit 170, the first mold conduit 170 has curvature.Second die holder 19 is located at the top of the first die holder 17, and the second die holder 19 has the Two molds conduit 190, the second mold conduit 190 correspond to the first mold conduit 170, and the second mold conduit 190 is identical to first The bending channel 18 that mold conduit 170, the second mold conduit 190 and the first mold conduit 170 are combined into, wherein bending channel 18 curvature is 90 degree to (this bending angle refers to channel angle) in the angular range for being less than 180 degree, in other words, is bent The bending angle in channel 18 is to be bent by beeline channel in the angle in 90 degree.The curvature matching of combined type mold core structure 1 is curved The curvature in triton road 18.The outer diameter of combined type mold core structure 1 needs to be less than the internal diameter of tubing 3, and such bending channel 18 leads to Road inner wall is then greater than the cold pipe for pushing away forming belt straight tube elbow of tubing 3 at a distance of the clearance distance of the outer wall in combined type mold core structure 1 Wall thickness.Wherein the first power mould group 21 and the second power mould group 23 are the device for providing 31 pressure of tubing and carrying out moulding, such as Oil hydraulic cylinder or other machine powers.

In this present embodiment, the first die holder 17 and the second die holder 19 are combined into the epimorph with straight tube elbow cold forming equipment Tool 20.First die holder 17 includes the first fixture 171 and the first mold 173, and the first mold 173 is set to the first fixture 171, In the first mold 173 include the first module 172, the bottom surface of the first module 172 positions and fixes with work top, the first module 172 there is the first mold conduit 170 and multiple first location structures 174, multiple first location structures 174 to be located at the first mold slots Around road 170.First fixture 171 includes the first pedestal 1711, multiple first grooves 1713 and multiple first fixing pieces 1715, multiple first grooves 1713 are located at the surface that the first pedestal 1711 carries the first module 172, multiple first fixing pieces 1715 Multiple first grooves 1713 are set to, the first mold 173 further includes the first side groove 1731, and the first side groove 1731 is located at first The side of module 172, multiple first fixing pieces 1715 fix the first side groove 1731.

From the above, the second die holder 19 includes the second fixture 191 and the second mold 193, and the second mold 193 is set to the Two fixtures 191, wherein the second mold 193 includes the second module 192, the second module 192 have the second mold conduit 190 with it is more A second location structure 194, multiple second location structures 194 are located at around the second mold conduit 190.Second fixture 191 packet The second pedestal 1911, multiple second grooves 1913 and multiple second fixing pieces 1915 are included, multiple second grooves 1913 are located at second Pedestal 1911 carries the surface of the second module 192, and multiple second fixing pieces 1915 are set to multiple second grooves 1913, the second mould Tool 193 further includes second side groove 1931, and second side groove 1931 is located at the side of the second module 192, multiple second fixing pieces 1915 fix second side groove 1931.Such second mold 193 is combined in the first mold 173, the first module 172 it is multiple First location structure 174 is chimeric mutually with multiple second location structures 194 of the second module 192.

Referring back to Fig. 2, in this present embodiment, combined type mold core structure 1 is located in bending channel 18.Wherein combined type mould The nose of the guide part 111 of cored structure 1 has perforation 1110, and resilient key 1113 is located in nose, and the resilient key of a part 1113 protrude out the aperture of perforation 1110.The other end of the setting shape part 151 of combined type mold core structure 1 has locating rod 1511. In order to facilitate the actuation of performance resilient key 1113, therefore resilient key 1113 is adjusted to horizontally disposed in the example shown, is actually Facilitate operation, resilient key 1113 is vertically set in guide part 111.

First power mould group 21 is located at one end of bending channel 18, the first power mould group 21 have the first actuator 211 with Push rod 213, one end of push rod 213 are connected to the first actuator 211, and the other end of push rod 213 has receiving opening 210, receiving opening It is pushed section 212 around 210 aperture, the inner wall of receiving opening 210 sequentially has pushing surface 214 and fixing groove 216 from outside to inside.Second Power mould group 23 is located at the other end of bending channel 18, and the second power mould group 23 has the second actuator 231 and fixing piece 233, One end of fixing piece 233 is connected to the second actuator 231, one end of the other end stationary positioned bar 1511 of fixing piece 233, and Locating rod 1511 is used to fix elbow section and is oriented to the position of straight pipe, and in other words, fixed Combination formula mold insert structure 1 is located at bending Position in channel 18.

Fig. 5 to Figure 16 is please referred to, is the cold manufacturing step process for pushing away manufacturing process with straight tube elbow of this creation Figure one and two and manufacturing process schematic diagram one to ten.As shown, first taking tubing 3 in embodiment, tubing 3 has pipe Road 31, the both ends of pipeline 31 are respectively the first nozzle 311 and the second nozzle 313, wherein the first nozzle 311 and second of tubing 3 Nozzle 313 is all inclined-plane.

Referring to Fig. 7, the nozzle face of the first nozzle 311 of tubing 3 is connected to the pushed section 212 of the other end of push rod 213, And using beveled end that the first nozzle 311 outwardly protrudes as being intended to make the outside with straight tube elbow, so tubing 3 is bent When, the material compensation effect that tubing 3 is extended by the Inside To Outside of bending place, wherein it is logical to be less than bending for the outer diameter of pushed section 212 The channel internal diameter in road 18, and the channel internal diameter of bending channel 18 is equal to or more than the diameter of tubing 3, and such push rod 213 can support Ejector sleeve material 3, and push rod 213 and tubing 3 enter in bending channel 18 together.

Fig. 7 and Fig. 8 are please referred to, in step S11: the mouthpiece cover of tubing 3 is set to the guide part of combined type mold core structure 1 111.In present embodiment, the second nozzle 313 is sheathed on guide part 111, and the spout diameter of tubing 3 is close to combined type mould The outer diameter of cored structure 1.

In step S13: pushing tubing 3 mobile to bending channel 18.In present embodiment, the driving of the first power mould group 21 Push rod 213, the pushed section 212 of push rod 213 push tubing 3 to be sheathed on combined type mold core structure 1 and carry out moulding, and tubing 3 is to bending It is moved in channel 18.

Referring to Fig. 9, in step S15: cold ejector sleeve material 3 is arranged entire combined type mold core structure 1, and tubing 3 is shaped as Band straight tube elbow, wherein tubing 3 carry out it is cold push into shape during, tubing 3 is inwardly limited by combined type mold core structure 1, The outer wall of tubing 3 is limited by bending channel 18 outward, and tubing 3 is caused to be combined formula mold insert structure 1 and bending channel 18 The uniform bending of guiding extends.The receiving opening 210 of push rod 213 is arranged the nose of guide part 111, the nose of guide part 111 it is outer Diameter is less than the aperture of the receiving opening 210 for pushing away end of push rod 213, and resilient key 1113 is located at the movement of pushing surface 214 and fixing groove 216 Path, mobile 214 elasticity of compression pin 1113 of pushing surface, pushing surface 214 are inclined-plane, the pressure gradual by pushing surface 214 of resilient key 1113 Contracting mode.Wherein resilient key 1113 can be spring, and those skilled in the art can select most suitable structure according to actual demand, It is not limited with structure cited by present embodiment.

Referring to Fig. 10, mobile 214 elasticity of compression pin 1113 of pushing surface, until fixing groove 216 corresponds to resilient key 1113, bullet Property pin 1113 stretching, extension be fixed in fixing groove 216, tubing 3 is pushed into and is arranged combined type mold core structure 1 completely, and tubing 3 is cold to be pushed away Forming belt straight tube elbow 4.

Please refer to Figure 11, carry out step S17: the direction that guiding straight pipe 11 is directed away from elbow section 13 is mobile, and first is dynamic Power mould group 21 pulls push rod 213, and push rod 213 is by the fixed relationship of fixing groove 216 and resilient key 1113 with lower moving guide 111 is mobile, and guide part 111 interlocks the first shaft 115 and is moved to one end in the first kidney slot 1131, and the first shaft 115 supports One end in the first kidney slot 1131.

Figure 12 is please referred to, the first shaft 115 drives first connecting rod 113, the fixed perforation of the first of first connecting rod 113 1133 drive the first pivotal axis 1311, and the first pivotal axis 1311 interlocks the first elbow module 131.First elbow module 131 is patch Together in the part combined type mold core structure 1 of bending 31 inner wall of segment pipe of tubing 3, the inside of the first elbow module 131 has patch Close the flexure plane of pipeline 31.When the first elbow module 131 is pulled by the first pivotal axis 1311, make the first elbow module 131 The flexure plane of inside is displaced into the inner wall of rectilinear duct 31 from the inner wall for fitting in crooked pipeline 31, simultaneously, the first elbow Module 131 is moved to rectilinear duct 31, then it represents that the other end the second elbow module 133 of disengaging of the first elbow module 131, first The outside of elbow module 131 has been detached from third elbow module 135.Since the flexure plane of 131 inside of the first elbow module can not The inner wall of rectilinear duct 31 is fitted in completely, then the first elbow module 131 is by the first pivotal axis 1311 along band straight tube elbow 4 The inner wall in 41 path of pipeline pivot, the inside flexure plane of the first elbow module 131 is resisted against rectilinear tubes in a manner of not being bonded The inner wall in road 31, the outside of the first elbow module 131 can also accommodate first because not limited by third elbow module 135 The inside flexure plane of elbow module 131 has the part for having more volume because that can not be bonded 31 inner wall of pipeline, such as in this case, the One elbow module 131 is moved along pipeline 41, and is detached from the second elbow module 133 and third elbow module 135.

Figure 13 is please referred to, carries and takes out the first elbow module 131 in the pipeline 41 of straight tube elbow 4.In addition, push rod 213 The slot bottom of fixing groove 216, which has more, moves back pin hole 2161.It moves back pin hole 2161 and penetrates through 213 outer wall of push rod.User can be by moving back pin stick (such as tube or club) one end, which is worn, moves back pin hole 2161, and compresses resilient key 1113, compresses resilient key 1113, and moves back It out after fixing groove 216, is then not limited between push rod 213 and guide part 111, then push rod 213 and guide part 111 is disengaged.

Please refer to Figure 14, carry out step S19: the direction that setting section 15 is directed away from elbow section 13 is mobile, the second power mould Group 23 pulls fixing pieces 233, and fixing piece 233 drives setting part 151 mobile by locating rod 1511, and setting part 151 interlocks the Two shaft lever 155 is moved to one end in the second kidney slot 1531, and setting part 151 interlocks the second shaft 155 along the second kidney-shaped One end, the one end of the second shaft 155 in the second kidney slot 1531 are moved in hole 1531.

Figure 15 is please referred to, the second shaft 155 drives the second connecting rod 153, the fixed perforation of the second of the second connecting rod 153 1133 drive the second pivotal axis 1331, and the second pivotal axis 1331 interlocks the second elbow module 133.Second elbow module 133 is patch Together in the part combined type mold core structure 1 of bending 31 inner wall of segment pipe of tubing 3, the inside of the second elbow module 133 has patch Close the flexure plane of pipeline 31.When the second elbow module 133 is pulled by the second pivotal axis 1331, make the second elbow module 133 The flexure plane of inside is displaced into the inner wall of rectilinear duct 31 from the inner wall for fitting in crooked pipeline 31, simultaneously, the second elbow Module 133 is moved to rectilinear duct 31, then it represents that the outside of the second elbow module 133 has been detached from third elbow module 135.By Flexure plane in 131 inside of the first elbow module can not fit in the inner wall of rectilinear duct 31 completely, then the second elbow module 133 By the second pivotal axis 1331 along 41 path of pipeline with straight tube elbow 4 inner wall pivot, the second elbow module 133 it is interior Lateral bending curved surface is resisted against the inner wall of rectilinear duct 31 in a manner of not being bonded, the outside of the second elbow module 133 because not by The limitation of third elbow module 135 can also accommodate the inside flexure plane of the second elbow module 133 because can not be bonded in pipeline 31 Wall and have the part for having more volume, such as in this case, the second elbow module 133 is moved along pipeline 41, and be detached from third elbow Module 135.Figure 14 is please referred to, carries and takes out the second elbow module 133 in the pipeline 41 of straight tube elbow 4.

Figure 16 is please referred to, step S21 is carried out: taking out the third elbow module 135 in the pipeline 41 with straight tube elbow 4.Such as This can obtain the structure completely with straight tube elbow 4.

Referring back to Fig. 4, in present embodiment, the band straight tube elbow cold forming equipment with combined type mold core structure 1 Third power mould group 25 is further included, third power mould group 25 is located at the side of bending channel 18.The structure of third power mould group 25 The second power mould group 23 is identical to effect.It, only need to be by first when needing to shape the band straight tube elbow at 45 degree of angles or 30 degree of angles First module 172 of mold 193 carries out being replaced with third module, and third module is fixed on the first fixture 171, third module tool There are third mold conduit and multiple third location structures, multiple third location structures are located at around third mold conduit, third The curvature of mold conduit is different from the curvature of the first mold conduit 170.Second module 192 of the second mold 193 is also the same Carry out correspondence and be replaced with the 4th module, the 4th module is fixed on the second fixture 191, the 4th module have the 4th mold conduit with Multiple 4th location structures, multiple 4th location structures are located at around the 4th mold conduit, the curvature of the 4th mold conduit It is identical to the curvature of third mold conduit.Multiple third location structures and multiple 4th location structures are chimeric mutually, third mould Tool conduit is incorporated into another bending channel that the 4th mold conduit is combined into, wherein the curvature of another bending channel is greater than 90 It spends in the angular range less than 180 degree (this bending angle refers to channel angle), in other words, the bending of another bending channel Angle is bent in the angle less than 90 degree by beeline channel.The curvature of combined type mold core structure 1 matches another bending channel Curvature.

In present embodiment, the bending angle of this another bending channel is less than 90 degree, i.e., when beeline channel is bent 30 In the case where degree or 45 degree, 13 part of elbow section of combined type mold core structure 1 can be by symmetrical two elbow modules replacement first Elbow module 131, the second elbow module 133 are used as mold core with third elbow module 135, because of symmetrical two elbow moulds The shape of the bent part of block is not exposed to the limitation in straight tube angle, i.e., the shape of bending part will not because of bending angle and It is stuck in the pipe of straight tube by being limited, can smoothly deviate from the pipeline of straight tube, wherein two outsides two of symmetrical module End is respectively combined in one end and one end of setting section 15 of guiding straight pipe 11, and the both ends of symmetrical module correspond to guiding directly The both ends of pipeline section 11 and setting section 15 are distinctly the composite structure of convex shoulder Yu recessed shoulder, are not being repeated in this.

From the above, third power mould group 25 is located at one end of another bending channel, and the second power mould group 23 is located at another The other end of bending channel, then after replacing the combined type mold core structure corresponding to another bending channel, it, can after above structure assembling Tubing 3 is bent into the elbow with straight tube of another angle.In present embodiment, chosen according to the curvature to be made of tubing 3 Select the bending channel and combined type mold core structure of matching module.Third power mould group 25 also according to bending channel one end position It is configured.

In conclusion present embodiment provide it is a kind of for the cold combined type mold core structure for pushing away forming belt straight tube elbow, group Box-like mold insert structure includes guide part, the first elbow module, the second elbow module, third elbow module and setting part.Combined type Mold insert structure is located in bending channel.The nozzle for being intended to tubulation material is arranged the guide part of combined type mold core structure, by tubing with cold The mode of pushing away is pushed into bending channel, outer wall and bending channel of the curvature and pipe thickness of tubing by combined type mold core structure Inner wall limitation, tubing is shaped into band straight tube elbow, this bending section Inside To Outside with straight tube elbow extends, and outer arc subtracts Thin rate is no more than 10% or so.

It will be disassembled with the combined type mold core structure in straight tube elbow, it is curved to pull out first by simple mechanical structure The side of head module, the first elbow module fits in the inner wall with straight tube elbow, when the medial surface of the first elbow module is by being bonded The straight tube inner wall not being bonded is moved to straight tube elbow interior wall, while being no longer influenced by third elbow on the outside of the first elbow module The limitation of module, the volume that the inside of the first elbow module has more because of tube wall is not bonded can also be because of the first elbow module Outside do not have the limitation of third elbow module, and the volume that the first elbow module has more can be accommodated more.Such first elbow The shape of the bent part of module is not exposed to the limitation in straight tube angle, i.e. the shape of bending part will not be because of bending angle And be stuck in the pipe of straight tube by being limited, it can smoothly deviate from the pipeline of straight tube, it is curved that the second elbow module is identical to first Head module event, repeats no more.So by combined type mold core structure, piecemeal disengaging has the curved of straight tube in a manner of simple mechanical structure Head, to complete the complete processing procedure with straight tube elbow.This creation can simplify the cold production process for pushing away forming belt straight tube elbow.

Several preferred embodiments of this creation have shown and described in above description, but as previously described, it should be understood that this wound It is not limited to forms disclosed herein, is not to be taken as the exclusion to other embodiments, and can be used for various other Combination, modification and environment, and can within the scope of the Creation Conception described herein, by the technology of above-mentioned introduction or related fields or Knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of this creation, then it all should be In the protection scope of this creation appended claims.

Claims

1. a kind of for the cold combined type mold core structure for pushing away forming belt straight tube elbow, which is characterized in that the combined type mold core knot Structure includes:

It is oriented to straight pipe (11), with guide part (111), first connecting rod (113) and the first shaft (115), the guiding One end of part (111) has the first groove (110), and first groove (110) is fixed at the both ends of first shaft (115) Interior two inner sidewall up and down, the first connecting rod (113) have the first kidney slot (1131) and the first fixed perforation (1133), First kidney slot (1131) and the first fixed perforation (1133) are located at the two of the first connecting rod (113) End, the first connecting rod (113) are located at first groove (110), and first shaft (115) wears first connection First kidney slot (1131) of bar (113), first shaft (115) is along reciprocal in first kidney slot (1131) Displacement；

Elbow section (13) has the first elbow module (131), the second elbow module (133) and third elbow module (135), One end of the first elbow module (131) is bonded one end of the second elbow module (133), the first elbow module (131) the same side of the third elbow module (135), first elbow are fitted in the second elbow module (133) The other end of module (131) has the first pivotal axis (1311) and the first recess (1313), first pivotal axis (1311) Two inner sidewall up and down in first recess (1313) is fixed at both ends, and first pivotal axis (1311) wears described first The fixed perforation (1133) of connecting rod (113), the first connecting rod (113) is relative to the first elbow module (131) it pivoting, the other end of the second elbow module (133) has the second pivotal axis (1331) and the second recess (1333), Two inner sidewall up and down in second recess (1333) is fixed at the both ends of second pivotal axis (1331)；And

It shapes section (15), there is setting part (151), the second connecting rod (153) and the second shaft (155), the setting part (151) one end has the second groove (150), and the both ends of second shaft (155) are fixed in second groove (150) Two inner sidewall up and down, second connecting rod (153) have the second kidney slot (1531) with second it is fixed perforate (1533), institute It states the second kidney slot (1531) and the second fixed perforation (1533) is located at the both ends of second connecting rod (153), Second connecting rod (153) is located at second groove (150), and second shaft (155) wears second connecting rod (153) second kidney slot (1531), second shaft (155) reset along past in second kidney slot (1531) It moves, second pivotal axis (1331) of the second elbow module (133) wears the described second fixed perforation (1533), described Second connecting rod (153) is pivoted relative to the second elbow module (133)；

Wherein, guiding straight pipe (11) is directed away from the direction movement of the elbow section (13), and the guide part (111) is even First shaft (115) is moved along being moved to one end in first kidney slot (1131), first shaft (115) against One end in first kidney slot (1131), first shaft (115) drive the first connecting rod (113), and described the The fixed perforation (1133) of described the first of one connecting rod (113) drives first pivotal axis (1311), first pivotal axis (1311) the first elbow module (131) is interlocked, the first elbow module (131) passes through first pivotal axis (1311) Be switched to the moving direction of the guide part (111), the first elbow module (131) along the guide part (111) shifting Dynamic path, and it is detached from the third elbow module (135) and the second elbow module (133)；

Wherein, setting section (15) is directed away from the direction movement of the elbow section (13), and the setting part (151) interlocks institute The second shaft (155) is stated along one end is moved in second kidney slot (1531), second shaft (155) is against described One end in second kidney slot (1531), second shaft (155) drive second connecting rod (153), and described second connects The fixed perforation (1533) of described the second of extension bar (153) drives second pivotal axis (1331), second pivotal axis (1331) the second elbow module (133) is interlocked, the second elbow module (133) passes through second pivotal axis (1331) Be switched to it is described setting part (151) moving direction, the second elbow module (133) along it is described setting part (151) shifting Dynamic path, and it is detached from the third elbow module (135).

2. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as described in claim 1, which is characterized in that described For guide part (111) also comprising perforation (1110) and resilient key (1113), the perforation (1110) is located at the guide part (111) Nose, the resilient key (1113) are located in the nose, and the resilient key (1113) of a part protrudes out described wear The aperture in hole (1110).

3. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as described in claim 1, which is characterized in that described Shape part (151) the other end have locating rod (1511), the locating rod (1511) for fix the elbow section (13) with The position of guiding straight pipe (11).

4. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as described in claim 1, which is characterized in that described One end of first elbow module (131) has the first locating notch (1312), and one end of the second elbow module (133) has Second locating notch (1332), first locating notch (1312) and second locating notch (1332) are combined into locating slot (130), there are positioning pin (132) in the middle part of the third elbow module (135), the positioning pin (132) is embedded in the positioning Slot (130).

5. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as described in claim 1, which is characterized in that described The one end for being oriented to straight pipe (11) has the first recessed shoulder (121), the first elbow module (131) and the third elbow module (135) common end has the first convex shoulder (141), and the first recessed shoulder (121) is embedding mutually with first convex shoulder (141) It closes.

6. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as claimed in claim 5, which is characterized in that described The length of the protrusion of first convex shoulder (141) is less than the depth of the recess portion of the described first recessed shoulder (121), and the length of the protrusion is less than First shaft (115) is along distance movable in first kidney slot (1131).

7. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as claimed in claim 5, which is characterized in that described The common end of second elbow module (133) and the third elbow module (135) has the second convex shoulder (143), the setting One end of part (151) has the second recessed shoulder (161), and second convex shoulder (143) is chimeric mutually with the described second recessed shoulder (161).

8. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as claimed in claim 7, which is characterized in that described The length of the protrusion of second convex shoulder (143) is less than the depth of the recess portion of the described second recessed shoulder (161), and the length of the protrusion is less than Second shaft (155) is along distance movable in second kidney slot (1531).

9. being used for the cold combined type mold core structure for pushing away forming belt straight tube elbow as claimed in claim 7, which is characterized in that described First convex shoulder (141) and the depth of section of second convex shoulder (143) are greater than the semicircle height of the combined type mold core structure, And the circle of first convex shoulder (141) and second convex shoulder (143) slightly end section height is less than or equal to the combined type The semicircle height of mold insert structure.