CN102626977B - 5-noded clamping apparatus in a toggle type injection molding machine - Google Patents
5-noded clamping apparatus in a toggle type injection molding machine Download PDFInfo
- Publication number
- CN102626977B CN102626977B CN201210022372.5A CN201210022372A CN102626977B CN 102626977 B CN102626977 B CN 102626977B CN 201210022372 A CN201210022372 A CN 201210022372A CN 102626977 B CN102626977 B CN 102626977B
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- CN
- China
- Prior art keywords
- connecting rod
- node
- short connecting
- crosshead
- injection molding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/66—Mould opening, closing or clamping devices mechanical
- B29C45/661—Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1792—Machine parts driven by an electric motor, e.g. electric servomotor
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a 5-noded clamping apparatus in a toggle type injection molding machine, comprising a short connecting rod and a long connecting rod which connect a back pressing plate to a movable pressing plate through nodes; and a crosshead connecting rod arranged on a crosshead which moves to open and closed the moving pressing plate. One end of the crosshead connecting rod is connected to the short connecting rod through the nodes. The 5-noded clamping apparatus satisfies the equation of Y1 = an open distance * A, wherein Y is a horizontal distance between a centre of the nodes for connecting the back pressing plate with the short connecting rod and a centre of the nodes for connecting the movable pressing plate with the long connecting rod, and A is from 0.66 to 0.77.
Description
Technical field
The present invention relates to a kind of multiple clamping device for injection (mo(u)lding) machine, and relate more specifically to a kind of 5 node clamping devices for toggle type injection molding machine.
Background technology
Usually, the device for clamping mould for injection (mo(u)lding) machine can be divided into direct press type and toggle rod type based on mold cramping scheme.
Direct press type carrys out clamping mold by the mold clamping force only produced by cylinder barrel, thus needs a large amount of hydraulic power source.In order to maintain mold clamping force, direct press type not only lot of energy but also there is low die sinking/toold closing speed.
Toggle rod type carrys out clamping mold by such mold clamping force, and this mold clamping force produces by utilizing elbow-bar mechanism to recover from the elasticity of the elongation of tie-rod.Such as, name is called that the Korean Patent No No.2006-0099800 of " multiple clamping apparatus of electric injection molding machine (the multiple clamping device of electric injection moulding machine) " discloses a kind of 5 node clamping devices for toggle type injection molding machine.
Referring to Fig. 1, the 5 node clamping devices for toggle type injection molding machine have rear fender 11 in every one end of tie-rod 10 and fixation clip 12 and the movable pressure plate between this rear fender and fixation clip 13.Movable pressure plate 13 is connected to rear fender 11 via the long connecting rod 14 connected between node " a ", " b ", " c " and short connecting rod 15.Rear fender 11 has the servo motor 16 and ball-screw 17 that are positioned at one end, and ball-screw 17 is screwed in crosshead 18, and this crosshead 18 connects with crosshead link 19 via node " d ".Crosshead link 19 connects with short connecting rod 15 via node " e ".
The 5 node clamping devices for toggle type injection molding machine are with the difference of 4 node clamping devices: crosshead link 19 connects via node " e " instead of via node " a " with short connecting rod 15.Because crosshead link 19 connects with short connecting rod 15 via node " e ", this node " e " is less than the radius of turn of node " a " relative to the radius of turn of node " b ", so compared with 4 node clamping devices, 5 node clamping devices guarantee higher opening/closing travel speed and the less amount of exercise of crosshead 18, thus can reduce the length of device for clamping mould.
Be different from direct press type, toggle type injection molding machine operates device for clamping mould with repetitive mode.Therefore, after predetermined time, stretch than (extension ratio), that is, the amount of exercise of movable pressure plate may go wrong with the momental ratio of crosshead.In other words, as shown in Figure 2, stretch than dropping to less than zero abnormally relative to the stroke of movable pressure plate, thus cause the reliability of product to reduce.
Analyze this problem and open and be closely related apart from (daylight) and Y1 parameter, wherein, described open apart from be defined as the stroke of the movable pressure plate in injection (mo(u)lding) machine and the maximum height of mould and, described Y1 parameter is defined as the horizontal range between the center connecting rear fender and the node of short connecting rod and the center of the node connecting movable pressure plate and long connecting rod.
In order to solve this problem, the scheme of the length increasing short connecting rod can be considered, but the program may cause the interference with ball-screw.Therefore, consider that the ratio of short connecting rod and long connecting rod should increase the length of short connecting rod.
Summary of the invention
Technical problem
The present invention is to solve the problem in design, therefore the object of this invention is to provide a kind of 5 node clamping devices for toggle type injection molding machine, and this clamping device has Y1 value and the optimum ratio opened apart from value.
Another object of the present invention is to provide a kind of 5 node clamping devices for toggle type injection molding machine, and this clamping device has good stretching, extension ratio, and does not interfere between short connecting rod and ball-screw.
Technical scheme
In order to realize object of the present invention, the invention provides a kind of 5 node clamping devices for toggle type injection molding machine, this clamping device comprises short connecting rod and long connecting rod, and rear fender is connected to movable pressure plate via node by described short connecting rod and described long connecting rod; And crosshead link, described crosshead link is arranged on crosshead place, described crosshead moves with movable pressure plate described in opening and closing, one end of described crosshead link is connected to described short connecting rod via node, wherein, described 5 node clamping devices meet equation Y1=and open distance × A, and A is 0.66 to 0.77.
Described 5 node clamping devices can L to satisfy the equation
l=B × L
s, wherein, L
sthe length of short connecting rod, L
lbe the length of long connecting rod, and B is preferably 1.20 to 1.41.
Described rear fender can at one end have servo motor and be connected to the ball-screw of rotating shaft of this servo motor, and described crosshead can be connected to described ball-screw to receive the power for moving.
Described short connecting rod all can have node in every one end, and described crosshead link can have a pair coupling bar, and this extends to every one end of described short connecting rod from the node of described crosshead link to coupling bar.
Beneficial effect
The 5 node clamping devices for toggle type injection molding machine according to the present invention can have good stretching, extension ratio, and can not drop to less than zero, and the suitable length that can maintain short connecting rod is to avoid interfering with ball-screw.
Accompanying drawing explanation
Accompanying drawing shows the preferred embodiment of present disclosure, and is used to provide the further understanding of the technical spirit to present disclosure together with above-mentioned disclosure.But present disclosure can not be regarded as being confined to accompanying drawing.
Fig. 1 is the side view of the 5 node clamping devices for toggle type injection molding machine illustrated according to conventional art;
Fig. 2 be illustrate according to conventional art for the stretching, extension in 5 node clamping devices of toggle type injection molding machine than relative to the curve map of the stroke of movable pressure plate;
Fig. 3 is the figure of the major constituents of the 5 node clamping devices for toggle type injection molding machine illustrated according to the preferred embodiment of the present invention;
Fig. 4 be illustrate according to the preferred embodiment of the present invention for the stretching, extension in 5 node clamping devices of toggle type injection molding machine than relative to the curve map of the stroke of movable pressure plate.
Detailed description of the invention
Hereinafter, the preferred embodiment of the present invention is described in detail with reference to the accompanying drawings.Before described, should be appreciated that, the term used in description and appended claim should not be construed and is limited to general significance and dictionary meanings, but explains based on the meaning corresponding with the state of the art of the present invention and concept according to the principle allowing inventor's definition to be suitable for the term of best interpretations.Therefore, description in this paper is only preferred embodiment, only for the purpose of illustrating, is not intended to limit the scope of the invention, therefore should be appreciated that, can carry out other equivalent and amendment when not departing from the spirit and scope of the present invention to the present invention.
Fig. 3 is the figure of the major constituents of the 5 node clamping devices for toggle type injection molding machine illustrated according to the preferred embodiment of the present invention.
Referring to Fig. 3, the short connecting rod 101 and long connecting rod 100 that connect via node " a " and the crosshead link 102 connected with short connecting rod 101 via node " e " can be comprised according to the 5 node clamping devices for toggle type injection molding machine of the preferred embodiment of the present invention.
Relative to node " a ", short connecting rod 101 can have node " b " at the other end and long connecting rod 100 can have node " c " at the other end.Short connecting rod 101 can connect with the rear fender of device for clamping mould via node " b ", and long connecting rod 100 can connect with the movable pressure plate of device for clamping mould via node " c ".
The servo motor that rear fender at one end can have device for clamping mould and the ball-screw be screwed in the rotating shaft of servo motor.The crosshead being connected to ball-screw can connect with one end of crosshead link 102 via node " d ".
The other end of crosshead link 102 can be connected to short connecting rod 101 via node " e ".Preferably, crosshead link 102 can have a pair coupling bar 103a and 103b, and this extends to the two ends of short connecting rod 101 from node " e " to coupling bar.
For 5 node clamping device demand fulfillment following Mathematical Formula 1 of toggle type injection molding machine, wherein, Y1 is from 0.66 to 0.77 with the scope of the ratio (A) opening distance.
[mathematical formulae 1]
Y1=opens distance × A
Wherein, open apart from be defined as the stroke of movable pressure plate of device for clamping mould and the maximum height of mould and, and Y1 be connect rear fender and the node " b " of short connecting rod 101 center and connect movable pressure plate and long connecting rod 100 node " c " center between horizontal range.
When A is in the scope of 0.66 to 0.77, the stretching, extension for 5 node clamping devices of toggle type injection molding machine can smooth variation than the stroke relative to movable pressure plate, and does not drop to less than zero, as shown in Figure 4.
When the scope of A more than 0.66 to 0.77 upper in limited time, stretch than being good, but the length of short connecting rod 101 excessively increases, thus causes the interference with ball-screw.When A lower than 0.66 to 0.77 scope lower in limited time, stretch than dropping to less than zero.
Preferably, the 5 node clamping devices for toggle type injection molding machine can meet following Mathematical Formula 2, and wherein, long connecting rod 100 can be 1.20 to 1.41 with the ratio (B) of short connecting rod 101.
[mathematical formulae 2]
L
L＝B×L
s
Wherein, L
sthe length of short connecting rod 101, L
lthe length of long connecting rod 100.
Cross the upper of the scope of 1.20 to 1.41 when B ultrasonic not interfere in limited time, but stretch than dropping to less than zero, thus movable pressure plate moves astatically under the initial operation of servo motor.This vibration is difficult to control and may affects the reliability of product subsequently.When B lower than 1.20 to 1.41 scope lower in limited time, the length of short connecting rod 101 excessively increases, thus causes the interference with ball-screw.
Following table 1 shows according to the stretching, extension ratio of the 5 node clamping devices for toggle type injection molding machine of examples and comparative examples of the present invention and the evaluation result of interfering feature.Here, the good stretching, extension ratio of 1.7 or larger is be evaluated as " G " and stretching, extension ratio under this level is be evaluated as " NG ".Further, be evaluated as when not interfering between short connecting rod and ball-screw " G ", and be evaluated as when interfering " NG ".
Table 1
As shown in table 1, embodiment 1 to 6 meets the A scope of 0.66 to 0.77 and the B scope of 1.20 to 1.41.Find that embodiment 1 to 6 has good stretching, extension ratio and can not cause the interference between short connecting rod and ball-screw.
On the contrary, comparative example 1 has the good stretching, extension ratio within the scope of the A of 0.66 to 0.77, but has the B value under the lower limit of the scope of 1.20 to 1.41, and thus the length of short connecting rod excessively increases, thus causes the interference with ball-screw.The A scope of comparative example 2 satisfied 0.66 to 0.77 still has the stretching, extension ratio of the upper limit of the B scope more than 1.20 to 1.41.Comparative example 3 has the A value under the lower limit of the scope of 0.66 to 0.77, thus stretches than dropping to less than zero.Comparative example 4 has the A value under the lower limit of the scope of 0.66 to 0.77, and thus the length of short connecting rod excessively increases, thus causes the interference with ball-screw.
Although described above is the present invention, but should be appreciated that, although detailed description and specific embodiment show the preferred embodiment of the present invention, but they only provide to illustrate, because the various change in the spirit and scope of the present invention and amendment will become obvious from this detailed description to those skilled in the art.
Industrial applicability
Device for clamping mould according to the present invention can realize stability and reliability due to its equalization operation in the application of process of injection molding.
The cross reference of related application
This application claims the priority of the korean patent application No.10-2011-0010141 that on February 1st, 2011 submits to, the full content of this korean patent application is incorporated herein by reference.
Claims (3)
1. for 5 node clamping devices of toggle type injection molding machine, described clamping device comprises short connecting rod and long connecting rod, and rear fender is connected to movable pressure plate via node by described short connecting rod and described long connecting rod; And crosshead link, described crosshead link is arranged on crosshead place, and described crosshead moves with movable pressure plate described in opening and closing, and one end of described crosshead link is connected to described short connecting rod via node,
Wherein, described 5 node clamping devices meet equation Y1=and open distance × A, wherein Y1 be connect described rear fender and the node of described short connecting rod center and connect described movable pressure plate and described long connecting rod node center between horizontal range, and A is 0.66 to 0.77, described open apart from be defined as the stroke of the movable pressure plate in injection (mo(u)lding) machine and the maximum height of mould and, and
Wherein, described short connecting rod and described long connecting rod meet equation L
l=B × L
s, wherein L
sthe length of short connecting rod, L
lbe the length of long connecting rod, and B is 1.20 to 1.41.
2. the 5 node clamping devices for toggle type injection molding machine according to claim 1,
Wherein, described rear fender at one end has servo motor and is connected to the ball-screw of rotating shaft of this servo motor, and
Described crosshead is connected to described ball-screw to receive the power for moving.
3. the 5 node clamping devices for toggle type injection molding machine according to claim 1,
Wherein, described short connecting rod all has node in every one end, and
Described crosshead link has a pair coupling bar, and described a pair coupling bar extends to every one end of described short connecting rod from the described node of described crosshead link.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110010141A KR101347237B1 (en) | 2011-02-01 | 2011-02-01 | 5-noded clamping apparatus in a toggle type injection molding machine |
| KR10-2011-0010141 | 2011-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102626977A CN102626977A (en) | 2012-08-08 |
| CN102626977B true CN102626977B (en) | 2015-02-11 |
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ID=46585457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210022372.5A Active CN102626977B (en) | 2011-02-01 | 2012-02-01 | 5-noded clamping apparatus in a toggle type injection molding machine |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101347237B1 (en) |
| CN (1) | CN102626977B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6091978B2 (en) * | 2013-04-23 | 2017-03-08 | 住友重機械工業株式会社 | Injection molding machine |
| CN109352939B (en) * | 2018-10-08 | 2023-12-26 | 海天塑机集团有限公司 | Mold closing mechanism |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4642044A (en) * | 1985-07-23 | 1987-02-10 | Fanuc Ltd | Lock |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61185942A (en) * | 1985-02-13 | 1986-08-19 | Mitsubishi Electric Corp | Resin-sealing device for semiconductor element |
| KR100838044B1 (en) * | 2005-03-15 | 2008-06-12 | 엘에스전선 주식회사 | Multiple Clamping apparatus of Electric Injection Molding Machine |
-
2011
- 2011-02-01 KR KR1020110010141A patent/KR101347237B1/en active IP Right Grant
-
2012
- 2012-02-01 CN CN201210022372.5A patent/CN102626977B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4642044A (en) * | 1985-07-23 | 1987-02-10 | Fanuc Ltd | Lock |
Non-Patent Citations (1)
| Title |
|---|
| 肘杆合模机构速度传动比性能的设计研究;张友根;《塑料制造》;20070228;第1卷(第2期);图1和2，第71页第1栏和第2栏第2段，第72页第2栏第5段 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102626977A (en) | 2012-08-08 |
| KR20120089042A (en) | 2012-08-09 |
| KR101347237B1 (en) | 2014-01-03 |
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