CN202062616U - Injection-plunger sealing structure - Google Patents
Injection-plunger sealing structure Download PDFInfo
- Publication number
- CN202062616U CN202062616U CN2011201528990U CN201120152899U CN202062616U CN 202062616 U CN202062616 U CN 202062616U CN 2011201528990 U CN2011201528990 U CN 2011201528990U CN 201120152899 U CN201120152899 U CN 201120152899U CN 202062616 U CN202062616 U CN 202062616U
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- CN
- China
- Prior art keywords
- mandrel
- sealing ring
- shoots material
- pipe
- injecting
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- Expired - Fee Related
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to an injection-plunger sealing structure, which relates to rubber injection machines and comprises a rotary-injecting plate, a material-injecting pipe, a sealing ring, a material-injecting core shaft, a clamping ring, a piston rod and an oil-cylinder bracket, wherein the rotary-injecting plate, the material-injecting pipe, the sealing ring, the material-injecting core shaft, the clamping ring and the piston rod are sequentially arranged from bottom to top; and the sealing ring is arranged on the material-injecting core shaft above a conical surface B, the sealing ring comprises at least one combination formed by an open sealing ring and a pressure-equalizing slot, the open sealing ring is a ring-shaped body which is arranged vertical to the material-injecting core shaft and is provided with an open-ring structure, the pressure-equalizing slot is a ring-shaped slot which is arranged vertical to the material-injecting core shaft, and the open sealing ring is made of polyfluortetraethylene with high-temperature resistance and a high wear-resisting property. The problem of traditional metal-metal matching friction is solved through the arrangement of the sealing ring; a step is manufactured at a position on the material-injecting core shaft above the conical surface B and below the sealing ring, so that the phenomenon that a conical surface A of the rotary-injecting plate and the central axis of the material-injecting pipe are not positioned on the same straight line to cause the seizure of the material-injecting core shaft can be avoided; and the open sealing ring is in the open-ring structure, so that the open sealing ring can be conveniently replaced.
Description
Technical field
The utility model relates to rubber injection machine, refers to a kind of injection piston hermetically-sealed construction especially.
Background technology
Rubber injection moulding machine has a wide range of applications at aspects such as producing auto parts machinery, industrial accessory, electrical insulation part, connector body, seal, beam, shockproof cover, footwear, bottle stopper, toy.The powerful market demand provides opportunity for the development of rubber injection machine.
The injection portion of rubber injection machine mainly is made up of spiro rod plasticizing extrusion system and plunger injection system, during injection moulding, at first cold glue size is fed the spiro rod plasticizing system, sizing material is behind spiro rod plasticizing, be squeezed in the plunger injection system, by plunger sizing material be expelled in the die cavity at last.At present the mating surface of shoot material axle center and the pipe that shoots material of plunger injection system leaks glue and is one and is difficult to the hard nut to crack that solves, and injecting systems leaks glue, and primary problem is to cause that injection precision can not guarantee, causes goods to lack material easily and scraps; Next is that shoot material axle center and the pipe mating surface wearing and tearing backs repair and replacement cost that shoots material is too high, changes trouble.When the existing structure front end of penetrating plate when the pipe that shoots material, shoot material axle center and commentaries on classics cooperates conical surface center not overlap once more, shooting material can cause the axis deviation that shoots material on earth, causes each mating surface to quicken uneven wear, so more a large amount of leakage glue of morning, form vicious circle, cause the afunction that shoots material.
Summary of the invention
The utility model is intended to overcome the above-mentioned deficiency of prior art, and a kind of injection piston hermetically-sealed construction is provided.It leaks the reduction of glue probability, and extend service life, convenient maintenance and replacement.
For this reason, the technical scheme of a kind of injection piston hermetically-sealed construction of the utility model is as follows:
Structure the utility model a kind of injection piston hermetically-sealed construction comprises that plate is penetrated in the commentaries on classics that sets gradually from bottom to top, the pipe that shoots material, sealing ring, the mandrel that shoots material, collar and piston rod, also comprises cylinder bracket cylindraceous; Change and penetrate the lower end that plate is anchored on the pipe that shoots material, change the center of penetrating plate and be shaped on funnelform perforation, the top of this perforation is the formed opening of A taper seat, and the bottom of perforation is a neck shape section; The shoot material upper end of pipe and the lower end of cylinder bracket is fastened and connected, the mandrel that shoots material is arranged in the cylinder bracket, shoot material mandrel upper end is connected with the piston rod of oil cylinder by collar, under the promotion of piston rod, can be in cylinder bracket will shoot material in downslide moves on to the pipe that shoots material sizing material the pipe of the mandrel that shoots material pushes and enters die cavity; Shoot material mandrel lower end for the B taper seat of the A taper seat close fit on the top of described perforation; The central shaft of A taper seat, the pipe that shoots material, shoot material mandrel and cylinder bracket is located on the same line; On the B taper seat up shoots material mandrel, sealing ring is set, sealing ring comprises a sealing open loop and formed at least one combination of a balancing slit, described sealing open loop is the ring bodies with open loop structure perpendicular to the mandrel setting that shoots material, the endless groove of described balancing slit for being provided with perpendicular to the mandrel that shoots material, the external diameter of described sealing open loop and described balancing slit mates with the internal diameter of the pipe that shoots material.
Technique scheme is further set forth:
Position on the B taper seat up shoots material mandrel and under sealing ring is shaped on a step, and described step place shoots material the external diameter of mandrel less than the external diameter of the mandrel that shoots material that the sealing ring place is set.
The sealing open loop adopts the polytetrafluoroethylene (PTFE) of high temperature resistant and high-wearing feature to make.
The beneficial effects of the utility model are: one, and sealing ring adopts sealing open loop and balancing slit dual-seal, and effect improves; The sealing open loop adopts the polytetrafluoroethylene (PTFE) of high temperature resistant and high-wearing feature to make, and has solved the drawback of traditional metal-metal friction fit.They are two years old, position on the B taper seat up shoots material mandrel and under sealing ring is shaped on a step, described step place shoots material the external diameter of mandrel less than the external diameter of the mandrel that shoots material that the sealing ring place is set, and can prevent that spline penetrates the A taper seat of plate and do not cause the stuck phenomenon of the mandrel that shoots material with the tube hub axis that shoots material on same straight line; Simultaneously, it is short slightly to control the shoot material effective travel of mandrel of injection cylinder stroke ratio, the B taper seat and the phenomenon of changeing the mandrel deflection that shoots material when the A taper seat decentraction of penetrating plate causes sizing material (shooting material) on earth of the mandrel lower end that can prevent to shoot material.Its three, the sealing open loop is an open loop structure, can change the sealing open loop easily when the mandrel that shoots material falls back on the end.Its four, be applicable to various types of rubber injection machines.
Description of drawings
Fig. 1 is the utility model schematic diagram;
Fig. 2 is an I place enlarged diagram among Fig. 1.
Among the figure: 1, plate is penetrated in commentaries on classics; 11, A taper seat; 2, the pipe that shoots material; 3, sealing ring; 31, sealing open loop; 311, interface; 32, balancing slit; 4, the mandrel that shoots material; 41, B taper seat; 5, cylinder bracket; 6, collar; 7, piston rod; 8, step
I, enlarged diagram position.
The specific embodiment
Below, introduce the specific embodiment of the present utility model in conjunction with the accompanying drawings.
As shown in Figures 1 and 2, a kind of injection piston hermetically-sealed construction of the utility model comprises that plate 1 is penetrated in the commentaries on classics that sets gradually, shoot material pipe 2, sealing ring 3, the mandrel 4 that shoots material, collar 5 and piston rod 7 from bottom to top, also comprises cylinder bracket 5 cylindraceous; Change and penetrate the lower end that plate 1 is anchored on the pipe 2 that shoots material, change the center of penetrating plate 2 and be shaped on funnelform perforation, the top of this perforation is A taper seat 11 formed openings, and the bottom of perforation is a neck shape section; Shoot material pipe 2 the upper end and the lower end of cylinder bracket 5 is fastened and connected, the mandrel 4 that shoots material is arranged in the cylinder bracket 5, mandrel 4 upper ends that shoot material are connected with the piston rod 7 of oil cylinder by collar 6, under the promotion of piston rod 7, the mandrel 4 that shoots material can move on to the sizing material extruding of managing the pipe 2 that will shoot material in 2 that shoots material to downslide and enter die cavity in cylinder bracket 5; Shoot material mandrel 5 lower end for the B taper seat 41 of A taper seat 11 close fit on the top of described perforation; The central shaft of A taper seat 11, shoot material pipe 2, shoot material mandrel 4 and cylinder bracket 5 is located on the same line; On B taper seat 41 up shoots material mandrel 4, sealing ring 3 is set, sealing ring 3 comprises sealing open loop 31 and a balancing slit 32 formed at least one combination, the ring bodies with open loop structure of described sealing open loop 31 for being provided with perpendicular to the mandrel 4 that shoots material, be shaped on the interface 311 that is used for open loop in the described sealing open loop 31, the endless groove of described balancing slit 32 for being provided with perpendicular to the mandrel 4 that shoots material, the external diameter of described sealing open loop 31 and described balancing slit 32 mates with the internal diameter of the pipe 2 that shoots material.
Position on B taper seat 41 up shoots material mandrel 4 and under sealing ring 3 is shaped on a step 8, and described step 8 places shoot material the external diameter of mandrel 4 less than the external diameter of the mandrel 4 that shoots material that sealing ring 3 places are set.
Sealing open loop 31 adopts the polytetrafluoroethylene (PTFE) of high temperature resistant and high-wearing feature to make.
The above only is preferred embodiment of the present utility model, is not that technical scope of the present utility model is imposed any restrictions.The technical staff of the industry, under the inspiration of the technical program, can make some distortion and revise, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model above any modification, equivalent variations and modification that embodiment did.
Claims (3)
1. injection piston hermetically-sealed construction comprises that plate is penetrated in the commentaries on classics that sets gradually from bottom to top, the pipe that shoots material, sealing ring, the mandrel that shoots material, collar and piston rod, also comprises cylinder bracket cylindraceous; Change and penetrate the lower end that plate is anchored on the pipe that shoots material, change the center of penetrating plate and be shaped on funnelform perforation, the top of this perforation is the formed opening of A taper seat, and the bottom of perforation is a neck shape section; The shoot material upper end of pipe and the lower end of cylinder bracket is fastened and connected, the mandrel that shoots material is arranged in the cylinder bracket, shoot material mandrel upper end is connected with the piston rod of oil cylinder by collar, under the promotion of piston rod, can be in cylinder bracket will shoot material in downslide moves on to the pipe that shoots material sizing material the pipe of the mandrel that shoots material pushes and enters die cavity; Shoot material mandrel lower end for the B taper seat of the A taper seat close fit on the top of described perforation; The central shaft of A taper seat, the pipe that shoots material, shoot material mandrel and cylinder bracket is located on the same line; On the B taper seat up shoots material mandrel, sealing ring is set; It is characterized in that: sealing ring comprises a sealing open loop and formed at least one combination of a balancing slit, described sealing open loop is the ring bodies with open loop structure perpendicular to the mandrel setting that shoots material, the endless groove of described balancing slit for being provided with perpendicular to the mandrel that shoots material, the external diameter of described sealing open loop and described balancing slit mates with the internal diameter of the pipe that shoots material.
2. a kind of injection piston hermetically-sealed construction according to claim 1, it is characterized in that: the position on the B taper seat up shoots material mandrel and under sealing ring is shaped on a step, and described step place shoots material the external diameter of mandrel less than the external diameter of the mandrel that shoots material that the sealing ring place is set.
3. a kind of injection piston hermetically-sealed construction according to claim 1 is characterized in that: the sealing open loop adopts polytetrafluoroethylene (PTFE) to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201528990U CN202062616U (en) | 2011-05-14 | 2011-05-14 | Injection-plunger sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201528990U CN202062616U (en) | 2011-05-14 | 2011-05-14 | Injection-plunger sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202062616U true CN202062616U (en) | 2011-12-07 |
Family
ID=45056493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201528990U Expired - Fee Related CN202062616U (en) | 2011-05-14 | 2011-05-14 | Injection-plunger sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202062616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107791472A (en) * | 2017-12-11 | 2018-03-13 | 宁波千普机械制造有限公司 | A kind of Zhuan She mechanisms applied to rubber injection moulding machine |
-
2011
- 2011-05-14 CN CN2011201528990U patent/CN202062616U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107791472A (en) * | 2017-12-11 | 2018-03-13 | 宁波千普机械制造有限公司 | A kind of Zhuan She mechanisms applied to rubber injection moulding machine |
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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: 20111207 Termination date: 20160514 |