CN210733174U - Injection molding machine mold locking oil cylinder with piston and pull rod in buckle type matching - Google Patents
Injection molding machine mold locking oil cylinder with piston and pull rod in buckle type matching Download PDFInfo
- Publication number
- CN210733174U CN210733174U CN201920861425.XU CN201920861425U CN210733174U CN 210733174 U CN210733174 U CN 210733174U CN 201920861425 U CN201920861425 U CN 201920861425U CN 210733174 U CN210733174 U CN 210733174U
- Authority
- CN
- China
- Prior art keywords
- mold locking
- oil cylinder
- pull rod
- piston
- locking oil
- 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.)
- Active
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A mold locking oil cylinder of an injection molding machine with a piston in snap-fit with a pull rod comprises the pull rod, a mold locking oil cylinder barrel, a mold locking piston, a half ring, a gland and a mold locking oil cylinder rear cover; the rear cover of the mold locking oil cylinder is fixed at the rear part of the mold locking oil cylinder barrel to form an oil cylinder body of the mold locking oil cylinder; the piston is arranged in the inner cavity of the mold locking oil cylinder barrel, and the pull rod penetrates through the piston after penetrating through the mold locking oil cylinder barrel; the tail part of the pull rod is provided with an annular groove along the circumference of the pull rod, the two half rings are respectively buckled in the annular groove, the two half rings are locked by screws, the tail part of the mold locking piston is provided with a corresponding installation space of the two half rings, the two half rings are arranged in the installation space and limit the pull rod to be separated, and the pressing plate is fixed on the mold locking piston by screws and compresses the pull rod. The utility model has the advantages that: reduces stress concentration and is easy to process and assemble.
Description
Technical Field
The utility model relates to a piston and pull rod buckle formula complex injection molding machine clamping cylinder.
Background
A pull rod in the existing two-plate injection molding machine mold locking oil cylinder structure is also used as a mold locking pull rod, and a piston is directly connected with the end part of the pull rod through threads.
In the normal working process of the injection molding machine, the action of the deformation force of the pull rod in each mode locking process is from the contact of the mold to the peak value after locking, and the action is from small to large; and opening the mold is vice versa. The cross section of the pull rod is subjected to alternating stress, and the thread structure is provided with stress concentration, so that fatigue failure is easy to occur, and the breakage failure of the pull rod is caused.
In order to eliminate the stress concentration, it is generally necessary to enlarge a root fillet or the like, but the improvement cannot be achieved due to the limitation of the thread size. Meanwhile, the manufacturing precision requirement of the threads is high, the processing difficulty is high, and the early cracks are usually caused by tiny manufacturing defects in the production process, so that the high requirement on quality control is provided.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art not enough and provide a piston and pull rod buckle formula complex injection molding machine clamping cylinder, make its stress dispersion, easily processing and satisfy operation requirement.
The utility model provides a technical scheme that above-mentioned problem adopted does: a mold locking oil cylinder of an injection molding machine with a piston in snap-fit with a pull rod comprises the pull rod, a mold locking oil cylinder barrel, a mold locking piston, a half ring, a gland and a mold locking oil cylinder rear cover; the rear cover of the mold locking oil cylinder is fixed at the rear part of the mold locking oil cylinder barrel to form an oil cylinder body of the mold locking oil cylinder; the piston is arranged in the inner cavity of the mold locking oil cylinder barrel, and the pull rod penetrates through the piston after penetrating through the mold locking oil cylinder barrel; the tail part of the pull rod is provided with an annular groove along the circumference of the pull rod, the two half rings are respectively buckled in the annular groove, the two half rings are locked by screws, the tail part of the mold locking piston is provided with a corresponding installation space of the two half rings, the two half rings are arranged in the installation space and limit the pull rod to be separated, and the pressing plate is fixed on the mold locking piston by screws and compresses the pull rod.
Preferably, there are a plurality of said half rings and corresponding annular grooves of the tie rod, so as to better fix the tie rod and the piston.
The utility model has the advantages that:
when the mode locking oil cylinder works, the pressure in the oil cylinder cavity enables the piston to be subjected to axial load, the axial load is transmitted to the pull rod through the half ring, the stress surface is an annular surface formed by the contact of the pull rod and the half ring, the stress concentration is obviously improved compared with the connection form of a threaded structure, the influence of template deformation on the structure is small, and the mode locking oil cylinder is safer and more reliable.
Because major diameter screw thread closes the assembly soon and needs special frock, otherwise the assembly precision is difficult to guarantee, and damages the flank of tooth easily, consequently, compares with threaded connection, the utility model discloses be connected through semi-ring, gland between pull rod and the piston, easily processing and assembly.
Drawings
Fig. 1 is the structural schematic diagram of the mold locking cylinder of the injection molding machine with the piston and the pull rod in snap-fit engagement.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1, a mold locking oil cylinder of an injection molding machine with a piston and a pull rod in snap fit comprises a pull rod 1, a mold locking oil cylinder barrel 2, a mold locking piston 3, a half ring 4, a gland 5 and a mold locking oil cylinder rear cover 6.
The mold locking oil cylinder rear cover 6 is fixed at the rear part of the mold locking oil cylinder barrel 2 through screws (not shown in the figure) to form an oil cylinder body of the mold locking oil cylinder.
The pull rod 1 penetrates through the mold locking oil cylinder barrel 2 and the mold locking piston 3, the mold locking piston 3 is arranged in the mold locking oil cylinder barrel 2, an annular groove 11 is formed in the tail portion of the pull rod 1 along the circumference of the pull rod, the two half rings 4 are respectively buckled in the annular groove 11 and locked by screws, an installation space 31 corresponding to the two half rings 4 is formed in the tail portion of the mold locking piston 3, and the two half rings 4 are buckled in the installation space 31 and limit the pull rod from falling out.
The gland 5 is fixed on the mold locking piston 3 through a screw (not shown), a counter bore 51 on the gland 5 and a screw hole 32 on the piston, and the screw is tightly pressed by applying tightening torque to eliminate axial clearance between the mold locking piston 3 and a shaft shoulder of the pull rod 1.
Claims (2)
1. The utility model provides a piston and pull rod buckle formula complex injection molding machine clamping cylinder which characterized in that: the mold locking device comprises a pull rod, a mold locking oil cylinder barrel, a mold locking piston, a semi-ring, a gland and a mold locking oil cylinder rear cover; the rear cover of the mold locking oil cylinder is fixed at the rear part of the mold locking oil cylinder barrel to form an oil cylinder body of the mold locking oil cylinder; the piston is arranged in the inner cavity of the mold locking oil cylinder barrel, and the pull rod penetrates through the piston after penetrating through the mold locking oil cylinder barrel; the tail part of the pull rod is provided with an annular groove along the circumference of the pull rod, the two half rings are respectively buckled in the annular groove, the two half rings are locked by screws, the tail part of the mold locking piston is provided with a corresponding installation space of the two half rings, the two half rings are arranged in the installation space and limit the pull rod to be separated, and the pressing plate is fixed on the mold locking piston by screws and compresses the pull rod.
2. The piston and tie rod snap-fit injection molding machine mold lock cylinder of claim 1, wherein: the number of the semi-rings and the number of the corresponding pull rod annular grooves are multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861425.XU CN210733174U (en) | 2019-06-10 | 2019-06-10 | Injection molding machine mold locking oil cylinder with piston and pull rod in buckle type matching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861425.XU CN210733174U (en) | 2019-06-10 | 2019-06-10 | Injection molding machine mold locking oil cylinder with piston and pull rod in buckle type matching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210733174U true CN210733174U (en) | 2020-06-12 |
Family
ID=70984601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920861425.XU Active CN210733174U (en) | 2019-06-10 | 2019-06-10 | Injection molding machine mold locking oil cylinder with piston and pull rod in buckle type matching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210733174U (en) |
-
2019
- 2019-06-10 CN CN201920861425.XU patent/CN210733174U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104963927A (en) | Flanging and riveting self-locking nut and machining method thereof | |
| CN210733174U (en) | Injection molding machine mold locking oil cylinder with piston and pull rod in buckle type matching | |
| CN203348282U (en) | Locking device for large-specification bolt connecting piece | |
| CN210525759U (en) | Mode locking hydro-cylinder that semi-ring band-type brake formula was connected | |
| CN210733175U (en) | Injection molding machine mold locking oil cylinder with piston and pull rod shaft shoulder matched | |
| CN201487069U (en) | Quickly connected coupling with single taper sleeve | |
| CN211343638U (en) | Novel clutch master cylinder stud mounting structure | |
| US20100095839A1 (en) | Cylinder with replaceable attachment member | |
| CN210733176U (en) | Piston and pull rod connecting mechanism of injection molding machine mold locking oil cylinder and injection molding machine mold locking oil cylinder thereof | |
| CN103507238B (en) | Two-plate injection machine clamping mechanism and two-plate injection machine | |
| CN201502614U (en) | Round nut | |
| CN209838829U (en) | Set screw offset type nut anti-loose structure | |
| CN213478958U (en) | Large-scale shaft locking device | |
| CN109773104B (en) | Mechanical press screw sleeve fastening device and method | |
| CN215172165U (en) | Piston and piston rod matching structure | |
| CN101497233A (en) | Axle end rotation-proof mechanism | |
| CN215109889U (en) | Anti-loosening fastener | |
| CN218062914U (en) | Novel split type hydraulic cylinder piston | |
| CN210196243U (en) | Combined locknut | |
| CN219900295U (en) | Novel double-cone expansion clamp for processing cylinder sleeve excircle | |
| CN214788462U (en) | Mode locking bolt thin sleeve | |
| CN110239046A (en) | A kind of Mode-locking oil cylinder of semi-ring band brake type connection | |
| CN218522915U (en) | Improved hydraulic nut pressure adjusting device | |
| CN209875612U (en) | Piston and piston rod connecting structure of hydraulic oil cylinder | |
| CN219606010U (en) | Grease gun and piston assembly thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |