CN203876177U - Pull rod mechanism of injection molding machine - Google Patents
Pull rod mechanism of injection molding machine Download PDFInfo
- Publication number
- CN203876177U CN203876177U CN201420317276.8U CN201420317276U CN203876177U CN 203876177 U CN203876177 U CN 203876177U CN 201420317276 U CN201420317276 U CN 201420317276U CN 203876177 U CN203876177 U CN 203876177U
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- China
- Prior art keywords
- hole
- threaded rod
- pull rod
- rod
- nut
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 238000001746 injection moulding Methods 0.000 title abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims description 13
- 241000826860 Trapezium Species 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010103 injection stretch blow moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a pull rod mechanism of an injection molding machine. The pull rod mechanism of the injection molding machine comprises a pull rod, a pull rod nut and a fixed mold plate, wherein a pull rod hole is formed in the fixed mold plate; a threaded rod is arranged at one end of the pull rod; the threaded rod penetrates through the pull rod hole and is locked on the fixed mold plate by virtue of the pull rod nut; one side of the pull rod nut, departing from the fixed mold plate, is fixedly connected with a baffle; the threaded rod pushes against the baffle; a first through hole penetrates through the pull rod nut in the peripheral radial direction; a counter bore is formed in the threaded rod; the position of the counter bore is opposite to the first through hole. By virtue of the pull rod mechanism of the injection mold machine, the problem that the pull rod is easily broken due to excessively intensive bearing load when the pull rod is pulled is solved.
Description
Technical field
The utility model relates to a kind of working of plastics process equipment, and more particularly, it relates to a kind of injection machine drag link mechanism.
Background technology
Injection machine has another name called injection (mo(u)lding) machine or injector, and it is to utilize mould for plastics to make the main former of the plastic products of various shapes thermoplastic or thermosetting plastics, is divided into vertical, horizontal, all electric.Injection moulding function heating of plastic, applies high pressure to molten plastic, makes its ejaculation and is full of mold cavity.Wherein horizontal injection press claims again Standard Machine, is widely used.Injection machine is the processing equipment of use amount maximum in Plastics Processing Industry, not only has a large amount of products directly to produce with injection machine, but also is the key equipment of composition injection stretch blow moulding.China has become the first big country that world's injection molding machine part is produced.
Mold closing mechanism in injection machine is topmost actuating unit in injection machine, it is responsible for opening and closing mould need bear larger mechanical pulling force, in the clamping of current injection machine, pull bar is that the mode connecting by screw-threaded engagement provides tensile load substantially, in described Tiebar structure, the screw rod of its rod head bears whole tensile loads, and be limited to the material of pull bar, the reasons such as processing technology, the load of bearing on each screw thread is inhomogeneous, count from the supporting surface of nut, first lap is subject to load maximum, each circle successively decreases later, theory analysis and experiment all prove that thread turns is more, load skewness degree is also more remarkable, so increase the effect that spiro rod length does not improve its intensity yet, substantially after the 8th to 10 circle screw threads, screw thread is subject to load hardly.
At present, (Chinese patent that application number is CN201220647771.6 discloses a kind of drag link mechanism of injection machine) on market, it comprises pull bar and cutting ferrule.Although the drag link mechanism of this injection machine adopts the frictional force between cutting ferrule and drag link sleeve to share tensile load, but it is fastened in drawing process and there will be distortion to cause laid-up difficulty, trouble, and the load that described pull bar bears is appointed and so concentrated on screw rod front portion, cannot solve the suffered stress of screw rod completely and concentrate the problem that causes short, the easy fracture of pull bar life-span.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide that a kind of pull bar intensity is high, the injection machine draw rod structure of easy installation and removal.
For achieving the above object, the utility model provides following technical scheme: a kind of drag link mechanism of injection machine, comprise pull bar, pull-rod nut and solid plate, on described solid plate, offer tie rod hole, one end of described pull bar is provided with threaded rod, described threaded rod passes tie rod hole and is locked at cover half by described pull-rod nut and pulls, the one side that described pull-rod nut deviates from solid plate is fixedly connected with baffle plate and described threaded rod and baffle plate conflict, wherein, described pull-rod nut along being radially equipped with the first through hole on week, on described threaded rod, offer counterbore, described counterbore position and the first through hole are just right.
By adopting technique scheme, the first through hole arranging on described pull-rod nut can insert clench nail, described clench nail is plugged in the counterbore of threaded rod through described the first through hole, when described pull bar is subject to the hydraulic gear transmission horizontal reciprocating tensile force of injection machine, the structure that described clench nail can be plugged in counterbore can be shared the tensile load of bearing on described threaded rod, make described threaded rod bearing load more even, extend the service life of described pull bar.
The utility model is further set to: described pull-rod nut is near the tapered structure setting of its outer surface of one end of solid plate.
By adopting technique scheme, the pyramidal structure of described pull-rod nut one end forms Tension Nut, the described pull-rod nut taper section of suspending and threaded rod are stretcher strain, contribute to reduce the pitch difference in change of nut and threaded rod, from but load distribution is more even.
The utility model is further set to: described the first through hole is set to the first screwed hole.
By adopting technique scheme, on described the first screwed hole, can use screw as clench nail, by screw fastening, can prevent clench nail because of injection machine vibrations or stretch and come off back and forth.
The utility model is further set to: described counterbore is set to be trapezium structure setting along the cannelure of threaded rod setting in a week and the cross section of described cannelure, and the upper base of described trapezium structure is towards threaded rod.
By adopting technique scheme, counterbore on described screw rod changes cannelure into, make its processing simpler, only need lathe just can process, and rotate in the process of the pull-rod nut of back-outing at threaded rod, easily depart from counterbore position, and adopt cannelure just not need the position of counterbore described in precise positioning, make described injection machine drag link mechanism processing, use more convenient.
The utility model is further set to: in the one side that described threaded rod and baffle plate are conflicted, offer the second screwed hole, described pull bar covers and offers position and just right the second through hole of the second screwed hole.
By adopting technique scheme, increase screw and be located on described jacking block and threaded rod, described screw also can be shared the tensile load that described threaded rod bears, and further protects described pull bar, prevents that described pull bar is because of too concentrated fracture of load.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model injection machine draw rod structure embodiment;
Fig. 2 is the threaded rod structural representation in the utility model injection machine pull bar.
Reference numeral: 1. pull bar; 2. threaded rod; 3. pull-rod nut; 4. solid plate; 5. baffle plate; 6. counterbore (cannelure); 7. the second screwed hole; 8. the second through hole; 9. the first through hole (the first screwed hole).
Detailed description of the invention
Referring to figs. 1 through Fig. 2, the utility model embodiment is described further.
A kind of drag link mechanism of injection machine, comprise pull bar 1, pull-rod nut 3 and solid plate, on described solid plate 4, offer tie rod hole, described pull bar 1 one end is provided with threaded rod 2, described threaded rod 2 passes solid plate 4 and is locked on solid plate 4 with described pull-rod nut 3, described threaded rod 2 tops are also provided with baffle plate 5, described baffle plate 5 is fixedly connected on pull-rod nut 3, described pull-rod nut 3 tops are radially provided with the first through hole 9, described threaded rod 2 is provided with counterbore 6, described counterbore 6 positions and the first through hole 9 are just right, in described injection machine, be provided with hydraulic transmission, described hydraulic transmission connects described pull bar 1 and makes pull bar 1 do horizontal reciprocating movement and reaches die sinking, matched moulds operation, threaded rod 2 on described pull bar 1 need bear sizable tensile load, count from the supporting surface of nut, first lap is subject to load maximum, each circle successively decreases later, theory analysis and experiment all prove that thread turns is more, load skewness degree is also more remarkable, so increase the effect that spiro rod length does not improve its intensity yet, substantially after the 8th to 10 circle screw threads, screw thread is subject to load hardly, after therefore in the present embodiment, preferably described the first through hole 9 is arranged on the 8th circle screw thread that described nut enters bar mouth, the first through hole 9 arranging on described pull-rod nut can insert clench nail, described clench nail is plugged in the counterbore 6 of threaded rod 2 through described through hole, when described pull bar 1 is subject to the hydraulic gear transmission horizontal reciprocating tensile force of injection machine, the structure that described clench nail can be plugged in counterbore 6 can be shared the tensile load of bearing on described threaded rod 2, make described threaded rod 2 bearing loads more even, extend the service life of described pull bar 1.
Its outer surface of one end that described pull-rod nut 3 screws in screwed pipe is set to pyramidal structure, preferably be set to taper shape, the pyramidal structure of described pull-rod nut 3 one end forms Tension Nut, after threaded rod 2 is fastening, threaded rod 2 tensions, and pull-rod nut 3 pressurizeds, threaded rod 2 requires to be elongated, pull-rod nut 3 requires to be pressed short, and threaded rod 2 cannot reach consistent with the stress deformation of pull-rod nut 3, causes the stressed very uneven of each thread segment.The first lap of screw thread is stressed is 33.1%, the second circle is stressed is 22.5%, last lap is stressed is 1～7%, and Tension Nut is a kind of measure that improves screw strength, use its screw thread pair intensity of Tension Nut to improve 40%, fatigue strength also improves, and the described pull-rod nut 3 taper sections of suspending are stretcher strain with threaded rod 2, contribute to reduce the pitch difference in change of nut and threaded rod 2, from but load distribute more even.
Described the first through hole 9 is set to the first screwed hole 9, can use screw as clench nail on described screwed hole, by screw fastening, can prevent clench nail because of injection machine vibrations or stretch and come off back and forth.
Described counterbore 6 is set to be inverted trapezoidal along the cannelure 6 of threaded rod setting in 2 one weeks and the cross section of cannelure 6, counterbore 6 on described screw rod changes cannelure 6 into, make its processing simpler, only need lathe just can process, and rotate in the process of the pull-rod nut 3 of back-outing at threaded rod 2, easily depart from counterbore 6 positions, and the cross section that adopts cannelure 6 and cannelure 6 is the inverted trapezoidal position that does not just need counterbore 6 described in precise positioning, described screw is screwed into its screw bottom in described the first screwed hole 9 and can conflicts with 6 faces of cannelure, and cannelure 6 positions are offset a little also and can affect to some extent, make the drag link mechanism processing of described injection machine, use more convenient.
Described threaded rod 2 top end faces are provided with the second screwed hole 7; described pull bar covers and is provided with position and just right the second through hole 8 of the second screwed hole 7; increasing screw is located on described jacking block and threaded rod 2; described screw also can be shared the tensile load that described threaded rod 2 bears; the further described pull bar 1 of protection, prevents that described pull bar 1 is because of too concentrated fracture of load.
Pass through technique scheme, utilize 7 three technological means of the second screwed hole on Tension Nut and the baffle plate of the first screwed hole 9, taper to strengthen the intensity of described injection machine drag link mechanism, also its dismounting, maintenance process have been simplified simultaneously, realize structural improvement optimization, make described drag link mechanism can better be applied to production operation, ensure operation safety, enhance productivity.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. the drag link mechanism of an injection machine, comprise pull bar, pull-rod nut and solid plate, on described solid plate, offer tie rod hole, one end of described pull bar is provided with threaded rod, described threaded rod passes tie rod hole and is locked at cover half by described pull-rod nut and pulls, the one side that described pull-rod nut deviates from solid plate is fixedly connected with baffle plate and described threaded rod and baffle plate conflict, it is characterized in that: described pull-rod nut along being radially equipped with the first through hole on week, on described threaded rod, offer counterbore, described counterbore position and the first through hole are just right.
2. the drag link mechanism of injection machine according to claim 1, is characterized in that: described pull-rod nut is near the tapered structure setting of its outer surface of one end of solid plate.
3. the drag link mechanism of injection machine according to claim 1 and 2, is characterized in that: described the first through hole is set to the first screwed hole.
4. the drag link mechanism of injection machine according to claim 3, is characterized in that: described counterbore is set to be trapezium structure setting along the cannelure of threaded rod setting in a week and the cross section of described cannelure, and the upper base of described trapezium structure is towards threaded rod.
5. the drag link mechanism of injection machine according to claim 4, is characterized in that: in the one side that described threaded rod and baffle plate are conflicted, offer the second screwed hole, described pull bar covers and offers position and just right the second through hole of the second screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317276.8U CN203876177U (en) | 2014-06-14 | 2014-06-14 | Pull rod mechanism of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317276.8U CN203876177U (en) | 2014-06-14 | 2014-06-14 | Pull rod mechanism of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203876177U true CN203876177U (en) | 2014-10-15 |
Family
ID=51676718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420317276.8U Expired - Lifetime CN203876177U (en) | 2014-06-14 | 2014-06-14 | Pull rod mechanism of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203876177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426757A (en) * | 2016-10-25 | 2017-02-22 | 博创智能装备股份有限公司 | Fixed die plate and pull rod connecting structure |
-
2014
- 2014-06-14 CN CN201420317276.8U patent/CN203876177U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426757A (en) * | 2016-10-25 | 2017-02-22 | 博创智能装备股份有限公司 | Fixed die plate and pull rod connecting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161021 Address after: 201616, No. 888, Kun Gang Road, Xiao Kunshan Town, Shanghai, Songjiang District Patentee after: Shanghai Guangsu Machinery Manufacture Co., Ltd. Address before: 325000 Zhejiang Province, Wenzhou City Heng Du first industrial zone Patentee before: WENZHOU GUANGMING PLASTIC MACHINERY MANUFACTURING CO., LTD. |