CN108788021A - Core fastening device for assembling - Google Patents
Core fastening device for assembling Download PDFInfo
- Publication number
- CN108788021A CN108788021A CN201810632476.5A CN201810632476A CN108788021A CN 108788021 A CN108788021 A CN 108788021A CN 201810632476 A CN201810632476 A CN 201810632476A CN 108788021 A CN108788021 A CN 108788021A
- Authority
- CN
- China
- Prior art keywords
- core
- fastener
- eccentric wheel
- connecting rod
- sand
- Prior art date
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A kind of core fastening device for assembling,Belong to the fastening of core assembly in core assembly process in sand casting field,It is complicated for solving core assembly fastening process,The difficult problem of clamp device dismounting,How many core fastening device for assembling include upper Fastener and lower Fastener,Upper Fastener is by upper fastener,Guide part,Locating part,Upper connecting rod,Eccentric wheel assembly forms,Lower Fastener is made of lower fastener and lower connecting rod,Upper Fastener and lower Fastener are connected as a fully functional clamp device by upper connecting rod and lower connecting rod,The card pressure of upper Fastener and lower Fastener to core assembly is realized by upper fastener and lower fastener,It needs to wear screw rod so as to avoid screw rod fixation,The process for tightening nut,And the defeated and dispersed card pressure for also weakening or eliminating clamp device of core after knockout,Solve the problems, such as that dismounting is difficult,To improve process efficiency and reduce production cost.
Description
Technical field
The present invention relates to casting technology fields, more particularly to the fastening dress of sand core and sand mold or sand core and sand core assembly building
It sets.
Background technology
Sand casting is using the sand core and sand mold for carrying casting structure cavity made of sand by core assembly, conjunction
The technology of casting is formed after case, cast, in the process in order to keep core assembly more secured, can be effective against from molten metal
Expansive force or buoyancy.The fastening means that core assembly at present uses is that through-hole is arranged on sand core and sand mold, is filled in the two
After matching, fastened in such a way that screw rod passes through the through-hole.And such use screw rod is fastened across through-hole both ends with nut
Mode have the disadvantage that：1) fastener cycle is relative complex, and operator will complete screw rod, nut, pad in a smaller space
Combination, the fastening of the parts such as piece；2) high-temperature liquid metal overflowed from dead head in casting process is easily stained with screw rod in top box face
Cause thread damage；3) unpacking damage of the process to screw rod：Casting after cast enters station of unpacking, manipulator clamping with sandbox
Sandbox hangs handle and sandbox and casting is integrally transferred to shakeout, then overturns casting pouring into knockout platform, in the process core
Body and screw rod can generate larger collision with sandbox wall, and shakeout vibrations later sand mold is shattered so that screw rod is taken out it is whole
A process all can make screw rod be deformed or damage；To ensure that normal production needs, needs to scrap daily, repair or again
A large amount of screw rods are bought, this not only causes the increase of production cost, also results in the increase of input of labor so that the unit interval
Yield rate reduce.
Invention content
In view of the above fastening process brought using screw rod fastening core body, complicated, screw rod is easy to become in use
Shape and need the problem for causing production cost high such as to repair or scrap, it is necessary to propose a kind of core fastening device for assembling,
The retaining mechanism that the clamp device passes through setting eccentric wheel structure so that fastening process is changed into letter from original nut fastening
Easy is fixed.
Core fastening device for assembling of the present invention, including upper Fastener and lower Fastener, upper Fastener is by upper card
Part, guide part, locating part, upper connecting rod, eccentric wheel assembly composition, upper fastener are pressed in sand mold or sand core for blocking, are used for
The contact of Fastener and sand mold or sand core in realization；Guide part is placed on upper fastener, for being cooperatively formed with eccentric wheel assembly
The operating position of eccentric wheel；It is equipped with locating part on an end margin of the guide part far from sand core or sand mold, is used for control eccentric
The card of component presses stroke；Upper connecting rod is equipped with externally threaded cylinder.Lower Fastener is made of lower fastener and lower connecting rod, lower card
Part is pressed in lower sand mold or lower sand core for blocking, for realizing the contact of lower Fastener and sand core or sand mold；Lower connecting rod is to set
Female tubular bar.Upper Fastener and lower Fastener by upper connecting rod and lower connecting rod be connected as one it is fully functional
Clamp device.
As further limiting for the present invention, the eccentric wheel assembly is made of eccentric wheel, eccentric wheel handle and rotating shaft,
A diameter of D, the eccentricity e of eccentric wheel are pulled since the geometric center c and centre of gyration o of eccentric wheel are misaligned when clockwise
When eccentric wheel handle, the lift angle α of eccentric wheel changes with the movement of P points between 0~90 °, to by guide part to lower fastener side
It is pressed downward, to realize upper fastening between sand core and lower sand mold or upper sand core and lower sand core.
More preferably, the condition of self-locking of eccentric wheel locking is：αmax≤σ1+σ2, in formula, αmaxIt is the maximum of eccentric wheel active section
Lift angle, σ1It is the angle of friction between eccentric wheel and sand core or sand mold, σ2It is the angle of friction of eccentric wheel corner.
As further limiting for the present invention, the upper Fastener and lower Fastener by the upper connecting rod of helicitic texture and
Lower connecting rod connects, and to realize, card presses the adjustable of spacing between upper fastener and lower fastener, to enable the clamp device
Suitable for the fastening of different height core assembly, the use scope of the core fastening device for assembling is improved.
More preferably, the eccentric wheel handle for fitting through eccentric wheel assembly of the upper connecting rod and lower connecting rod is in vertical side
Inside rotation is realized, namely is screwed in upper connecting rod in lower connecting rod by eccentric wheel handle, to realize upper Fastener
The adjustment of connection and upper fastener and card pressure distance before lower fastener with lower Fastener.
The application method of the core assembly clamp device includes following content：
1) on core mounting plate, upper and lower sand mold or sand core are combined as core assembly by technological requirement；
2) clamp device is set on the quadrangle of core assembly, and is rotated in vertical plane using eccentric wheel handle
Make upper fastener and lower fastener by core assembly clamping, then pulls eccentric wheel handle clockwise until locating part is reached, to make
Guide part can effectively compress core assembly；
3) the core assembly of locking is placed in sandbox and buries case, cast；
4) clamp device is removed in knockout station, because of the calcination of high-temperature liquid metal, sand core or sand mold have one after cast
Determine the defeated and dispersed of degree, then the card pressure of upper fastener and lower fastener can weaken or disappear automatically during knockout, to avoid
Damage of clamp device during knockout.
The advantageous effect of technical solution of the present invention：The present invention is avoided by using the clamp device of edge clamp-press type
The process of through-hole is set on sand core or sand mold, facilitates the coremaking and moulding of sand core or sand mold, while also avoiding wearing screw rod
Process improves process efficiency；Pass through the upper Fastener for being threaded connection and lower Fastener so that the clamp device can
Suitable for the core assembly of different clamping height, the use scope of clamp device is expanded；By using the upper of planar structure
Fastening screw can not be removed and be scrapped caused by screw flight caused by fastener and lower fastener avoid molten metal overflow is destroyed
The problem of, while the position for arbitrarily needing card to press on core assembly can be directly arranged in the upper fastener of planar structure and lower fastener
It sets, to improve the fastening ability of core assembly, avoids core assembly casting fin mistake caused by fastening loosely
The problems such as big or runout.
Description of the drawings
Fig. 1 is screw rod fastening uses status diagram；
Fig. 2 is clamp device structural schematic diagram；
Fig. 3 is clamp device junction sectional view and state diagram；
Fig. 4 is clamp device use state diagram；
Fig. 5 is eccentric wheel assembly operation principle schematic diagram；
In figure, the upper Fasteners of 100-；110- upper fasteners；120- guide parts；130- locating parts；140- upper connecting rods；150-
Eccentric wheel assembly；151- eccentric wheels；152- eccentric wheel handles；153- rotating shafts；Fastener under 200-；210- lower fasteners；220-
Lower connecting rod；The upper sand molds of 300-；Sand mold under 400-；500- sandboxes.
Specific implementation mode
In order to illustrate more clearly of technical scheme of the present invention, will be described in detail according to attached drawing embodiment, it is aobvious and easy
Insight, drawings in the following description are some embodiments of the invention, for those of ordinary skill in the art, is not paying
Under the premise of creative work, other drawings may also be obtained based on these drawings.
The present embodiment is the upper sand mold and lower sand mold composition for constituting product complete molding cavities based on the sand mold that two 3DP are printed
Core assembly.
As shown in Figure 1, in the printing of upper sand mold and lower sand mold, need on four angles of upper sand mold and lower sand mold, if
The through-hole passed through for fastening screw is set, after core assembles, fastening screw is penetrated in described pass through, is passing through nut
At both ends, the fastening of core installation diagram can be realized in fastening, this operation needs to wear four fastening screws, it is also necessary to screw eight spiral shells
Mother, operation amount are big.
It is illustrated in figure 2 core fastening device for assembling of the present invention, including upper Fastener 100 and lower Fastener 200,
Upper Fastener 100 is pressed in by the card of upper fastener 110 on upper sand mold 300, and lower Fastener 200 is pressed in lower sand by the card of lower fastener 210
In type 400, and upper Fastener 100 is connected as an entirety with lower Fastener 200 by upper connecting rod 140 and lower connecting rod 220
Clamp device.Specifically, the upper Fastener 100 is by upper fastener 110, guide part 120, locating part 130, upper connecting rod 140
It is formed with eccentric wheel assembly 150, the upper fastener 110 is pincer structure, and the binding clip portion of the pincer upper fastener 110 is used for blocking pressure
The clamp handle portion of upper sand mold 300, the pincer upper fastener 110 is equipped with for the through-hole across upper connecting rod 140, the guide part
120 are fixedly connected in 110 clamp handle portion of pincerlike upper fastener, and 120 middle part of the guide part also is provided with for across upper connecting rod
140 through-hole, the through-hole in the pincer upper fastener 110 clamp handle portion are aligned on the same axis with the through-hole on guide part 120,
In other words, it is worn on the upper connecting rod 140 and is connected with guide part 120 and upper fastener 110, the eccentric wheel assembly 150 is connected to institute
It states on non-threaded section of end of upper connecting rod 140, nestles up eccentric wheel assembly 150 by the guide part 120 from the upper company
The end of the thread segment of extension bar 140 penetrates, then the upper fastener 110 is worn from the end of the thread segment of the upper connecting rod 140
Enter, wherein an end face of the guide part 120 is plane and cooperates in the upper fastener 110, the guide part 120
Another end face is cambered surface groove and the eccentric wheel 151 in the eccentric wheel assembly 150 cooperates, the guide part 120
On cambered surface groove be also eccentric wheel 151 working region, the eccentric wheel handle of the eccentric wheel assembly 150 and eccentric wheel one
Body formed is an entirety, and the centre of gyration of the eccentric wheel 151 is equipped with rotating shaft 153, and the eccentric wheel assembly 150 passes through
Rotating shaft 153 is connected on upper connecting rod 140, and more specifically, 110 sets of the guide part 120 and upper fastener are through described return
In shaft 153, the locating part 130 is the raised points on 152 inside of eccentric wheel handle, plays and confirms that eccentric wheel assembly 150 is pulled
The effect of dynamic self-locking in place, when eccentric wheel handle 152 is pulled in place, the locating part 130 is just contacted with guide part 120.
The lower Fastener 200 is made of lower fastener 210 and lower connecting rod 220, and lower fastener 210 is similar with upper fastener 110, is also pincer
Structure, the binding clip portion of the pincerlike lower fastener 210 is for blocking pressure sand mold 400, the clamp handle portion connection of the pincerlike lower fastener 210
There is lower connecting rod 220, and the inner wall of the lower connecting rod 220 is equipped with internal thread, the internal thread is used for and upper connecting rod 140
Thread segment to cooperation.
The fastener cycle of the upper sand mold 300 and lower sand mold 400 is：
1) on core mounting plate, first lower sand mold 400 is placed on platform, according still further to technological requirement by upper sand mold 300
It is fastened on lower sand mold 400, to form core assembly；
2) it takes four sets of core fastening device for assembling respectively to block to be pressed on four angles of the core assembly, specifically
It is first to rotate the eccentric wheel handle in vertical plane, is that upper fastener 110 is held in core assembly with lower fastener 210, with institute
It states subject to clamp device do not fall out；Secondly, the identical number of turns of the eccentric wheel handle is rotated in the vertical direction respectively so that
The upper fastener 110 and lower fastener 210 are horizontal；Again, successively by the eccentric wheel handle 152 of four clamp devices
Clockwise pull until locating part 130 contacted with guide part 120, so far completion core assembly fastening；
3) the core assembly of locking is transferred in the sandbox being sized for for being equipped with bed load, and to the type
Core assembly carries out burying case, is poured into a mould, is cooled down later；
4) knockout pickup is carried out to molding casting, specifically turns the core assembly with mould casting in sandbox
Enter knockout station, the core assembly had after cast it is certain defeated and dispersed, to reduce or eliminate clamp device
Card pressure, so as to which easily the clamp device is removed from core assembly, so as to avoid screw rod fasten need
The process that nut extracts several complexity of screw rod out again is first unscrewed, nut can not be torn open caused by also avoiding screw rod from being bonded by molten metal
The problem of unloading, to fundamentally solve the problems, such as screw rod need to change, have scrap caused by production cost it is high.
Claims (7)
1. a kind of core fastening device for assembling, which is characterized in that the core fastening device for assembling includes upper Fastener
(100) and lower Fastener (200),
The upper Fastener (100) is by upper fastener (110), guide part (120), locating part (130), upper connecting rod (140), bias
Wheel assembly (150) forms, and upper fastener (110) is pressed in sand mold or sand core for blocking, for realizing upper Fastener (100) and sand
The contact of type or sand core；Guide part (120) is placed on upper fastener (110), is used for cooperatively forming bias with eccentric wheel assembly (150)
Take turns the operating position of (151)；It is equipped with locating part (130) on an end margin of the guide part (120) far from sand core or sand mold, is used for
It is equipped with externally threaded cylinder that the card of control eccentric component (150), which presses stroke, upper connecting rod (140),；
The lower Fastener (200) is made of lower fastener (210) and lower connecting rod (220), and lower fastener (210) is pressed in down for blocking
On sand mold or lower sand core, for realizing the contact of lower Fastener (200) and sand core or sand mold；Lower connecting rod (220) is equipped with interior
The tubular bar of screw thread；
Upper Fastener (100) and lower Fastener (200) are connected as a work(by upper connecting rod (140) and lower connecting rod (220)
Can completely clamp device.
2. core fastening device for assembling as described in claim 1, which is characterized in that the eccentric wheel assembly (150) is by inclined
Heart wheel (151), eccentric wheel handle (152) and rotating shaft (153) composition, to realize compacting and locking to clamp device.
3. core fastening device for assembling as claimed in claim 2, which is characterized in that eccentric wheel assembly (150) locking
Condition of self-locking be αmax≤σ1+σ2, in formula, αmaxIt is the maximum lift angle of eccentric wheel (151) active section, σ1Eccentric wheel (151) with
Angle of friction between sand core or sand mold, σ2It is the angle of friction of eccentric wheel (151) corner.
4. core fastening device for assembling as claimed in claim 2, which is characterized in that the upper Fastener (100) and lower card
Tight part (200) is connected by the upper connecting rod (140) and lower connecting rod (220) of helicitic texture.
5. core fastening device for assembling as claimed in claim 4, which is characterized in that the upper connecting rod (140) and lower company
Rotation of the eccentric wheel handle (152) for fitting through eccentric wheel assembly (150) of extension bar (220) in vertical direction is realized.
6. the application method of core fastening device for assembling as claimed in claim 2 includes：
On core mounting plate, upper and lower sand mold or sand core are combined as core assembly by technological requirement；
The core fastening device for assembling is disposed on core assembly.
7. the application method of core fastening device for assembling as claimed in claim 6, which is characterized in that the core assembly is used
The allocation method of clamp device is：
The clamp device is set on the quadrangle of core assembly, and is rotated in vertical plane using eccentric wheel handle (152)
Make upper fastener (110) and lower fastener (210) by core assembly clamping, then pulls eccentric wheel handle (152) clockwise until arriving
Up to locating part (130), to make guide part (120) that can effectively compress core assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632476.5A CN108788021A (en) | 2018-06-20 | 2018-06-20 | Core fastening device for assembling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632476.5A CN108788021A (en) | 2018-06-20 | 2018-06-20 | Core fastening device for assembling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108788021A true CN108788021A (en) | 2018-11-13 |
Family
ID=64083730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810632476.5A Pending CN108788021A (en) | 2018-06-20 | 2018-06-20 | Core fastening device for assembling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788021A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052581A (en) * | 2019-04-30 | 2019-07-26 | 安徽全柴天和机械有限公司 | A kind of sand mould mold splice joint fixing mechanism |
| CN110976779A (en) * | 2019-11-29 | 2020-04-10 | 马鞍山市兴隆铸造有限公司 | Fixing device for core assembly |
| CN112139460A (en) * | 2020-09-23 | 2020-12-29 | 共享智能铸造产业创新中心有限公司 | Core clamping and pressing method and clamping and pressing device thereof |
| CN114603123A (en) * | 2022-02-08 | 2022-06-10 | 共享装备股份有限公司 | Fastening tool for box-free casting and using method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052581A (en) * | 2019-04-30 | 2019-07-26 | 安徽全柴天和机械有限公司 | A kind of sand mould mold splice joint fixing mechanism |
| CN110976779A (en) * | 2019-11-29 | 2020-04-10 | 马鞍山市兴隆铸造有限公司 | Fixing device for core assembly |
| CN112139460A (en) * | 2020-09-23 | 2020-12-29 | 共享智能铸造产业创新中心有限公司 | Core clamping and pressing method and clamping and pressing device thereof |
| CN114603123A (en) * | 2022-02-08 | 2022-06-10 | 共享装备股份有限公司 | Fastening tool for box-free casting and using method thereof |
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Application publication date: 20181113 |