CN201626093U - Injection cylinder assembly of injection molding machine - Google Patents
Injection cylinder assembly of injection molding machine Download PDFInfo
- Publication number
- CN201626093U CN201626093U CN2010201700183U CN201020170018U CN201626093U CN 201626093 U CN201626093 U CN 201626093U CN 2010201700183 U CN2010201700183 U CN 2010201700183U CN 201020170018 U CN201020170018 U CN 201020170018U CN 201626093 U CN201626093 U CN 201626093U
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- injection
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- driving sleeve
- cylinder
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Abstract
The utility model provides an injection cylinder assembly of an injection molding machine. The injection cylinder assembly is provided with an injection piston and a cylinder, wherein the injection piston is provided with a center hole on an axis and is installed out of a driving sleeve via the center hole, and the driving sleeve is connected with an injection screw and a driving shaft via axial sliding key groove structure or spline structure; a flange sleeve (12) is arranged between the injection piston (6) and the driving sleeve (11); the flange sleeve is provided with a barrel and a flange, wherein the barrel is separated between the injection piston and the driving sleeve, the flange is connected to one end of the barrel and is fixedly installed on one end of the cylinder, and a sealing element is arranged between the flange and the cylinder end cover; the length of the cylinder causes one section of whole course of the journey of the injection piston to be sheathed on the barrel, and the center hole of the section of the injection piston is provided with a seal ring (22) and forms seal with the outer wall of the barrel of the flange sleeve. Compared with the prior art, the inner wall and the outer wall of the annular injection piston of the utility model do not directly rotate relatively to other construction members, and the injection piston does not need to use the expensive rotary seal ring.
Description
Technical field the utility model relates to place's injection machine injection cylinder assembly, belongs to injection-moulding plastic equipment technical field in the operation.
Single injection cylinder modular construction that background technology is generally used at present is that piston is rotary-type, the rotary-type injection ram that is meant of so-called piston is fixedlyed connected with injection screw, this sub-assembly connects motor through transmission mechanism, and injection ram, injection screw and motor etc. are simultaneously by on the parts that bearing is installed in cylinder sleeve is fixedlyed connected.Injection ram had both been followed the relative cylinder sleeve of injection screw and had been rotated during work, again cylinder sleeve moving linearly relatively under the effect of hydraulic system.Therefore remove on the piston and must use rotating seal ring, and outside this sealing ring costs an arm and a leg, also cause rapid wear between sub-assembly and the bearing that supports it easily, further cause the reduction of leakage of oil and piston rotating accuracy.For solving this technical problem, there is Chinese utility model patent ZL200820035616.2 " injection machine and ejaculation rotating mechanism thereof " to propose the injection machine injection cylinder assembly that a kind of piston is not followed the screw rod rotation, it " is being provided with rotary sleeve in the described injection piston; an end of described rotary sleeve and described gear shaft same axis are rotationally connected, and fixedly connected with described rotary screw is coaxial in the other end of described rotary sleeve rotationally." this structure comes down in original technology the axis of the piston core to be stripped out one deck as axle sleeve; piston is installed on the axle sleeve through bearing; axle sleeve is connected with driving shaft through similar spline structure; piston is slided in cylinder sleeve and can rotate relative to axle sleeve, and axle sleeve not only can move but also can be with drive shaft turns with piston linear.Though this utility model has solved the problem of rotating between the relative cylinder sleeve of piston, but the problem of rotating between the relative axle sleeve of piston has appearred, must adopt rotating seal ring between piston and the rotary sleeve like this, promptly still exist the deficiency that to use expensive rotating seal ring.
The innovation and creation content is at above-mentioned deficiency, and the utility model will provide a kind of piston directly not make counterrotating injection machine injection cylinder assembly with any member exactly.
The injection machine injection cylinder assembly that the utility model provides, injection ram and oil cylinder are arranged, injection ram has the mesopore on the axis and is installed in outside the driving sleeve with this mesopore, driving sleeve is through having keyway arrangements or spline structure connection injection screw and driving shaft in axial sliding, wherein, between injection ram and driving sleeve, also has a flange cover, flange is with the cylindrical shell that is isolated between injection ram and the driving sleeve and is connected the flange of cylindrical shell one end, said flange is fixedly mounted on oil cylinder one end, and between flange and the cylinder cover seal is installed, said cylindrical shell length makes on the stroke whole process of injection ram all has one section to be enclosed within on this cylindrical shell, sealing ring is installed on said this section of injection ram mesopore and is put cylinder body outer wall with flange to constitute sealing.
The injection machine injection cylinder assembly that the utility model provides, extend the cylindrical shell that is isolated between injection ram and the driving sleeve at mounting flange on the oil cylinder end and with this flange, make the flange cover of cylindrical shell and flange formation and the sealed chamber that oil cylinder forms an annular, the injection ram of annular is slided by oil pressure in this chamber.During work, driving shaft drives injection screw through driving sleeve, and driving sleeve rotates in the flange cover, and piston slides outside the flange cover.Injection screw is kept and being connected of driving shaft by similar spline structure when moving axially with piston.Compared with prior art, the injection ram inside and outside wall of the utility model annular does not directly rotate relative to other members, so can realize sealing as long as common piston packing is installed on the injection ram, and does not need to use expensive rotating seal ring.
Said driving sleeve is fixedlyed connected with driving shaft, is slidingly connected with strong groove structure or spline structure with the injection screw axle, and the injection screw axle rotates with the axial location step through bearing with piston and is connected.It also is feasible that driving sleeve is fixedlyed connected with injection screw, but the driving sleeve fixed installation is connected in injection screw not as being fixedly installed to convenience on the driving shaft.
Be connected with a power transmission shaft between said driving sleeve and the injection screw, said power transmission shaft is installed in the injection ram mesopore through bearing and axial location step, one end has and the fixing structure of injection screw, and the other end has the structure that is slidingly connected with driving sleeve, installs with convenient.
Having one in the bearing of installing between said power transmission shaft and the injection ram at least is plane bearing, to the injection thrust of injection screw, improves the functional reliability of bearing when bearing pistons work.
Appended drawings is the structural representation of the utility model one embodiment, among the figure: 1-injection seat, 2-barrel screw arbor assembly, 3-Half ring, the 4-gland, 5-power transmission shaft, 6-piston, 7-gland, oil cylinder cover before the 8-copper sheathing, 9-, 10-valve plate pipeline assembly, 11-driving sleeve, 12-flange cover, 13-cylinder body, oil cylinder cover behind the 14-, 15-rebound, the 16-oil motor, 17,18, the 19-bearing, 20,21, the 22-sealing ring, the 23-spacer, the 24-bearing, 25-spacer, 26-locknut, the long key of 27-.
The specific embodiment as shown in drawings, be the injection cylinder assembly of an injection machine, comprise parts such as injection seat 1, barrel screw arbor assembly 2, Half ring 3, power transmission shaft 5, piston 6, driving sleeve 11, flange cover 12, front and back oil cylinder cover 9,14, gland 4,7, copper sheathing 8, spacer 23,25, cylinder body 13, locknut 26, long key 27, oil motor 16, valve plate pipeline assembly 10, various bearing 17,18,19,24, various sealing ring 20,21,22.Their installation relation is:
Barrel screw arbor assembly 2 is installed on the injection seat 1, and injection cylinder is installed on screw axis, injection cylinder is made of front and back oil cylinder cover 9,14 and cylinder body 13 3 parts, with an end that points to screw rod be before.Piston 6 is the T shape of laying across, and horizontal on the T shape is piston body, and perpendicular in the T shape is mesopore for piston rod on the T shape axis, and mesopore is the reducing step.The piston body outer wall is connected do slipper seal with inboard wall of cylinder block through combined seal ring 21, and the piston rod outer wall constitutes mechanical seal by sealing ring 20, copper sheathing 8 and gland 7 and is installed in the preceding oil cylinder cover.After sealing ring is installed on the oil cylinder cover, the piston body inwall is connected do slipper seal through the external wall of sealing ring 22 and flange sleeve flange cover 12 with flange.There is oil circuit to connect piston body space, front and back and valve plate pipeline assembly 10 respectively on the oil cylinder cover of front and back, links up method oil cylinder and oil hydraulic system through valve.Also driving sleeve 11 is installed in the back oil cylinder cover through two bearings 24, determine distance with spacer 23 between the two bearings, the driving sleeve rear end also is fastened on the bearing face through spacer 25 and locknut 26, and bearing front end stop bit overlaps end face in flange, and stop bit step end face in the oil cylinder cover of back in rear end makes the driving sleeve axial location.Through rebound 15 oil motor 16 is installed on the outer axis of back oil cylinder cover, the oil motor rotating shaft is that driving shaft cooperates with driving sleeve through flat key.Power transmission shaft 5 is installed in piston rod, power transmission shaft is installed through three bearings 17,18,19, wherein one is that plane bearing is installed between power transmission shaft step rear end face and the interior step front end face of piston rod, the piston rod front end have gland 4 through bearing to the attached front end face stop bit of transmission pillow block, make power transmission shaft axial location in piston.The power transmission shaft rear end has long key 27 and the keyway in the driving sleeve to make matched in clearance, makes between power transmission shaft and the driving sleeve and can move axially.Spiro rod rear end is fixed on the power transmission shaft front end through Half ring 3.Wherein oil motor is replaceable is servomotor.
During work, rotation is to drive screw rod by the oil motor driving shaft again through driving sleeve, power transmission shaft, and injection is that piston is through the power transmission shaft lead-screw.The wherein not axially-movable with the screw axial motion of oil motor, piston does not rotate with screw rod.Because piston needn't rotate, so sealing ring can be common combined seal ring, and needs not to be rotating seal ring.Obtain isolating when the flange cover makes driving sleeve do rotation and axially-movable in piston and between the in-oil cylinder hydraulic oil,, and improved the reliability of sealing greatly simultaneously because the flange cover does not rotate.Oil cylinder adopts and divides body structure, makes manufacturing and easy for installation.
The course of work of the present utility model is that driving shaft drives the driving sleeve rotation, driving sleeve drives the power transmission shaft rotation, power transmission shaft drives the screw rod rotation, screw rod is in rotation, because the propulsive thrust of front end plastic melt, screw rod retreats while rotating, and forces the transmission moving axis to inject in the driving sleeve simultaneously, and both are rotation synchronously simultaneously.Acting in conjunction lower piston at oil pressure also and then shrinks back, and falls back on to a certain degree to stop, and after having a break according to technological requirement, hydraulic oil is advanced in the injection cylinder rear end, the piston forward injection, and an operation is finished in also lead-screw injection simultaneously.
Claims (4)
1. injection machine injection cylinder assembly, injection ram and oil cylinder are arranged, injection ram has the mesopore on the axis and is installed in outside the driving sleeve with this mesopore, driving sleeve is through having keyway arrangements or spline structure connection injection screw and driving shaft in axial sliding, it is characterized in that between injection ram and driving sleeve, also having a flange cover, flange is with the cylindrical shell that is isolated between injection ram and the driving sleeve and is connected the flange of cylindrical shell one end, said flange is fixedly mounted on oil cylinder one end, and between flange and the cylinder cover seal is installed, said cylindrical shell length makes on the stroke whole process of injection ram all has one section to be enclosed within on this cylindrical shell, sealing ring is installed on said this section of injection ram mesopore and is put cylinder body outer wall with flange to constitute sealing.
2. injection machine injection cylinder assembly as claimed in claim 1, it is characterized in that said driving sleeve fixedlys connected with driving shaft, be slidingly connected with strong groove structure or spline structure with the injection screw axle, the injection screw axle rotates with the axial location step through bearing with piston and is connected.
3. injection machine injection cylinder assembly as claimed in claim 1 or 2, it is characterized in that being connected with a power transmission shaft between said driving sleeve and the injection screw, said power transmission shaft is installed in the injection ram mesopore through bearing and axial location step, one end has and the fixing structure of injection screw, and the other end has the structure that is slidingly connected with driving sleeve.
4. injection machine injection cylinder assembly as claimed in claim 3 has at least one to be plane bearing in the bearing that it is characterized in that installing between said power transmission shaft and the injection ram, when bearing pistons work to the injection thrust of injection screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201700183U CN201626093U (en) | 2010-04-21 | 2010-04-21 | Injection cylinder assembly of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201700183U CN201626093U (en) | 2010-04-21 | 2010-04-21 | Injection cylinder assembly of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201626093U true CN201626093U (en) | 2010-11-10 |
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ID=43057479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201700183U Expired - Fee Related CN201626093U (en) | 2010-04-21 | 2010-04-21 | Injection cylinder assembly of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201626093U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821794A (en) * | 2014-03-06 | 2014-05-28 | 宁波欧意莱机械制造有限公司 | Return driving mechanism of injection molding machine oil cylinder |
| CN105881852A (en) * | 2016-05-05 | 2016-08-24 | 中山力劲机械有限公司 | Two-plate injection molding machine |
| CN107756746A (en) * | 2017-11-01 | 2018-03-06 | 宁波双马机械工业有限公司 | A kind of single cylinder ejecting mechanism of injection machine |
| CN113183395A (en) * | 2021-05-13 | 2021-07-30 | 重庆城市管理职业学院 | Electromechanical integrated injection molding device for workpiece production and processing |
-
2010
- 2010-04-21 CN CN2010201700183U patent/CN201626093U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821794A (en) * | 2014-03-06 | 2014-05-28 | 宁波欧意莱机械制造有限公司 | Return driving mechanism of injection molding machine oil cylinder |
| CN103821794B (en) * | 2014-03-06 | 2016-06-01 | 宁波欧意莱机械制造有限公司 | Driving mechanism return by a kind of injection moulding machine oil cylinder |
| CN105881852A (en) * | 2016-05-05 | 2016-08-24 | 中山力劲机械有限公司 | Two-plate injection molding machine |
| CN107756746A (en) * | 2017-11-01 | 2018-03-06 | 宁波双马机械工业有限公司 | A kind of single cylinder ejecting mechanism of injection machine |
| CN107756746B (en) * | 2017-11-01 | 2023-11-17 | 伯乐智能装备股份有限公司 | Single-cylinder injection mechanism of injection molding machine |
| CN113183395A (en) * | 2021-05-13 | 2021-07-30 | 重庆城市管理职业学院 | Electromechanical integrated injection molding device for workpiece production and processing |
| CN113183395B (en) * | 2021-05-13 | 2023-03-10 | 重庆城市管理职业学院 | Electromechanical integrated injection molding device for workpiece production and processing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20190421 |