CN202812118U - Multi-layer gear - Google Patents
Multi-layer gear Download PDFInfo
- Publication number
- CN202812118U CN202812118U CN 201220467815 CN201220467815U CN202812118U CN 202812118 U CN202812118 U CN 202812118U CN 201220467815 CN201220467815 CN 201220467815 CN 201220467815 U CN201220467815 U CN 201220467815U CN 202812118 U CN202812118 U CN 202812118U
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- Prior art keywords
- gear
- multilayer
- axle sleeve
- fixed
- center hole
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Abstract
The utility model provides a multi-layer gear, which solves the problems of complex design and mounting structure of the conventional paper outlet gear. The multi-layer gear comprises at least two gears, i.e., a first gear and a second gear, which are parallel to each other and of which the central axes are overlapped with each other, wherein central holes are formed in the centers of the first gear and the second gear respectively; two positioning grooves are uniformly formed outside outer rings of the first gear and the second gear; a shaft penetrates through the central holes to fixedly connect at least the first gear and the second gear into a whole; a shaft sleeve is integrally formed through an injection molding process and is fixedly connected with at least the first gear and the second gear through the injection molding process; the middle part of the shaft sleeve is also provided with a fixing hole; and one end of the shaft sleeve is provided with a sinking groove. Since injection molding ports of the injection molding process can be positioned in the sinking groove, the problems in a mounting process of the multi-layer gear are avoided, and the problem of paper clamping caused by collision and overlapping between the injection molding ports during use is solved.
Description
Technical field
The utility model relates to the printer field, especially a kind of multilayer gear for the printer paper delivery.
Background technique
Gear is the element of often using in the mechanical field, on the paper delivery mechanism on the printer, also is by the frictional force between gear unit and the paper paper to be taken out of.But the gear on the existing printer as shown in Figure 1, is the individual layer gear, and individual layer gear 1 comprises axle sleeve 10 ' and spider gear 14 ', and wherein this spider gear 14 ' is fixed in the middle of the axle sleeve 10 ', and center hole 15 ' is arranged on the axle sleeve 10 '.This spider gear unit is fixed on the paper output of printer, to increase the frictional force of paper delivery.When making paper delivery, the stress equalization of paper does not produce fold, and more this spider gear unit need to be set, but this design can increase assembling and manufacture cost.And the gear of existing equipment paper output is during by molding and forming, and the clout of water inlet or out-of-flatness often can make the overlapping situation that bumps between the gear, cause paper delivery inhomogeneous.
The model utility content
The utility model proposes a kind of multilayer gear, solved the problem of existing paper output design of gears and mounting structure complexity, simplified assembling procedure, saved cost.
The technical solution of the utility model is achieved in that
A kind of multilayer gear, this multilayer gear comprises at least two parallel and central shaft overlaps the first gear and the second gears, the center of described the first gear and the second gear offers respectively center hole, and the outside, outer ring of described the first gear and the second gear evenly is provided with two and is used for described the first gear and the second gear are separately fixed at the first gear substrate and the on-chip locating slot of the second gear; One axle sleeve runs through described center hole, with the parallel one that is connected and fixed on the second gear of described at least the first gear; Described axle sleeve is one-body molded by Shooting Technique, and is fixed together by this Shooting Technique and described at least the first gear and the second gear, and described axle sleeve middle part also offers fixed hole; One end of described axle sleeve is provided with deep gouge, and the injection hole of described Shooting Technique is positioned at described deep gouge.The multilayer gear of this structure will be reduced in the injection hole in the deep gouge, the burr of injection hole and the installation that unnecessary waste material affects gear have been prevented, and this burr and clout also can cause the collision between the paper delivery gear and make paper delivery inhomogeneous, and other operational failure that causes printer.
On processing cost and practicability, general double-layer gear is comparatively practical, so, preferably, described multilayer gear is the double-layer gear that comprises the first gear and the second gear, described the first gear and the second gear are divided into three parts with described axle sleeve, and between described the first gear and the second gear is the middle part, the both sides, middle part be respectively the upper and lower; The center of described upper face is provided with described deep gouge, and the middle part of described deep gouge is provided with described fixed hole, and described fixed hole runs through described upper, middle and lower.
Preferably, is injected with numbering in the described axle sleeve, described numbering is arranged in the described deep gouge also one-body moldedly, with distinguish and locate the multilayer gear operative position and batch etc.
Preferably, the center hole of described the first gear and the second Gear center is the identical polygonal of shape or circle.More preferably, the center hole of described the first gear and described the second Gear center is circular, and evenly offers several fixed grooves on the profile of described circle, the stress equalization in the time of can increasing like this gear rotation; Further, described fixed groove is four, and the center hole of described circle is divided into the quartering.
Described fixed groove can be specially circle, and described fixed groove clips part with the profile of the center hole of described circle, and namely described fixed groove is communicated with described approximate tetragonal center hole.
The outer diameter of described axle sleeve is D, and the center hole maximum diameter of described the first gear and the second gear is D1, and the root diameter of described the first gear and the second gear is D2, described D1＜D＜D2; Being described axle sleeve is coated on axle sleeve inside with the center hole of described the first gear and the second gear, simultaneously the gear teeth of gear is exposed at the outside of axle sleeve.
Preferably, described axle sleeve is the acetal plastic axle sleeve, in use has good wear resistance to ensure the multilayer gear.
In order to make gear of the present utility model, the utility model also proposes a kind of manufacturing installation of making described multilayer gear, and this manufacturing installation comprises injection mould and middle tool, and described injection mould comprises upper die and lower die;
Tool is removably assembled by several strip tools side by side in the middle of described, is respectively arranged with semicircular groove on two long sides of described strip tool; When the long side of described a plurality of strip tools was arranged in order, described semi-circular recesses was bonded with each other, and was formed for holding the circular cavity volume at the middle part of described axle sleeve; Described upper die and lower die are used for being socketed respectively described the first gear substrate and the second gear substrate, when described upper die and lower die fasten, tool in the middle of described is clipped in the middle, and is communicated with described circular cavity volume, form the die cavity of described axle sleeve.
The long side two ends of described strip tool are respectively arranged with parting surface, and when described strip tool was arranged in order, the parting surface of adjacent two strip tools formed separating vessel, when a segregating unit inserts this separating vessel, with two adjacent strip tools separately.
For the strip tool that will arrange positions, preferably, the two ends of described strip tool are separately fixed in the chute, be fixed with several strip tools in the described chute, the circular cavity volume quantity that forms between the described strip tool is identical with arrangement position with the second gear quantity with on-chip the first gear of the gear in the described upper die and lower die with arrangement position.
According to above-mentioned manufacturing installation, the utility model also proposes a kind of manufacture method that adopts described manufacturing installation to make the multilayer gear, and described manufacture method comprises the steps:
Step 1) upper die and lower die with gear die install to respectively on the injection machine;
Step 2) described the first gear substrate and the second gear substrate are installed to respectively on the described upper die and lower die;
Circular cavity volume and on-chip the first gear of described gear and the second gear contraposition on the described middle tool that step 3) will assemble, and matched moulds clamps;
Step 4) inject fluid in described injection mould, and to make the fluid coagulation forming be plastic sleeve, it is inner simultaneously described the first gear and the second gear to be set in described axle sleeve;
Step 5) opens described upper die and lower die, and with the strip tool in the tool in the middle of described separately, unload the multilayer gear of solidification forming.
Multilayer gear of the present utility model has been simplified the gear structure of printer paper outlet on the one hand, also adopts simultaneously the design of deep gouge at integrally formed injection hole, the quality problems of having avoided gear to produce in installation process, and the problems such as paperboard in the using process; And the center hole of this gear is polygonal, makes gear rotate stressed more even when driving the paper turnover, prolonged the working life of gear.
Description of drawings
Fig. 1 is the structural representation of multilayer gear preferred embodiment of the present utility model;
Fig. 2 is the schematic representation of gear structure preferred embodiment of the present utility model;
Fig. 3 is the package assembly schematic representation of injection mould of the present utility model and middle tool;
Fig. 4 is embodiment's composite structure schematic representation of middle tool of the present utility model;
Fig. 5 is the counterdie embodiment's of injection mould of the present utility model structural representation;
Fig. 6 is the patrix embodiment's of injection mould of the present utility model structural representation.
Embodiment
The below will be clearly and completely described the technological scheme among the utility model embodiment, and obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the multilayer gear that the utility model proposes comprises at least two gears parallel and central shaft overlaps, in this preferred embodiment, take two gears as example illustrates Multilayer-tooth wheel construction of the present utility model; The multilayer gear is illustrated the first gear 2 and the second gear 3; As shown in Figure 2, offer center hole 23 at the center of the first gear 2 and the second gear 3; Because the external tooth of gear adopts existing profile of tooth, and the small and dense collection of tooth, so do not demonstrate in the drawings, root circle 22 and top circle 21 only are shown; Evenly be provided with two is used for the first gear 2 and the second gear 3 are fixed on locating slot 24 on the first gear substrate 2A and the second gear substrate 2B in the outside, outer ring of the first gear 2 and the second gear 3; The first gear substrate 2A is an iron plate that is arranged with respectively several the first gears 2, the second gear substrate 2B is an iron plate that is arranged with several the second gears 3, the first gear substrate 2A and the second gear substrate 2B are mainly used in improving work efficiency, but the iron plate of a plurality of multilayer gears of time processing.Axle sleeve 1 runs through the center hole 23 of the first gear 2 and the second gear 3, with the first gear 2 and the second gear 3 parallel one that are connected and fixed on.
If on the multilayer gear during more than two gears, when being the more multi-layered gear such as three layers or four layers, these a plurality of gears also are arranged on the axle sleeve 1 successively abreast, but on processing cost and practicability, general double-layer gear is comparatively practical, so the utility model is only described its structure and manufacturing as an example of double-layer gear example.
In the preferred embodiment of model utility, the multilayer gear comprises the first gear 2 and the second gear 3, and these two gears are divided into three parts with axle sleeve 1, and between described two gears is middle part 18, the both sides, middle part be respectively top 19 and bottom 17; The center on the surface on top 19 is provided with deep gouge 11, is provided with fixed hole 12 at the middle part of deep gouge 11, and fixed hole 12 runs through top 19, middle part 18 and bottom 17.
In reality processing, be injected with numbering in the axle sleeve 1, described numbering can be arranged in the deep gouge 11 also one-body moldedly, with distinguish and locate the multilayer gear operative position and batch etc. information, and this numbering can not affect the function of multilayer gear owing to inside contract in deep gouge 11.
The center hole 23 of the first gear 2 and the second gear 3 can be circle, polygonal or similar circle, polygonal structure.When center hole was polygonal, its limit number preferably was at least four, can make the stressed more balanced of gear when rotation.As shown in Figure 2, in preferred embodiment of the present utility model, center hole 23 is circular, and each angle of center hole 23 is provided with fixed groove 25, fixed groove 25 is circular, and fixed groove 25 is clipped respectively part with four positions of described round center hole 23 contour edges, to form the hole of an integral body with center hole 23.When axle sleeve 1 molding and forming, the curved portions branch on fixed groove 25 and the center hole 23 increases the area of contact of the center hole 23 of axle sleeve 1 and the first gear 2 and the second gear 3, increase the moment of torsion that rotates, thereby balance the first gear 2 and the second gear 3 is stressed.
The outer diameter of axle sleeve 1 is D, and the center hole 23 maximum diameter places of the first gear 2 and the second gear 3 are D1, and as shown in Figure 2, root circle 22 diameters of the first gear 2 and the second gear 3 are D2, described D1＜D＜D2; Being axle sleeve 1 is coated on the inside of axle sleeve 1 with the center hole 23 of the first gear 2 and the second gear 2, simultaneously the gear teeth of the first gear 2 and the second gear 3 is exposed at the outside of axle sleeve 1.
For the manufacture of the manufacturing installation of multilayer gear of the present utility model such as Fig. 3-shown in Figure 6, this manufacturing installation comprises patrix 4, counterdie 5 and middle tool 6; As shown in Figure 3, middle tool 6 is removably assembled by several strip tools 62,63 side by side, is respectively arranged with semicircular groove on two long sides of strip tool; When a plurality of strip tools 62,63 long side were arranged in order, described semi-circular recesses was bonded with each other, and was formed for holding the circular cavity volume at the middle part 18 of axle sleeve 1.
Patrix 4 and counterdie 5 are used for being socketed respectively the first gear substrate 2A and the second gear substrate 2B, when described patrix 4 and counterdie 5 fastening, as shown in Figure 3, tool 6 in the middle of described is clipped in the middle, and is communicated with described circular cavity volume, form the die cavity of axle sleeve 1.
Strip tool 62,63 long side two ends are respectively arranged with parting surface 64, when strip tool 62,63 is arranged in order, the parting surface 64 of adjacent two strip tools forms separating vessel 65, when one segregating unit inserts this separating vessel 65, can be with two adjacent strip tools 62, opened in 63 minutes, reach the effect of taking mould apart.
For the strip tool 62,63 that will arrange positions, strip tool 62 of the present utility model, 63 two ends are separately fixed in the chute 61, can fix several strip tools 62,63 in the chute 61, the circular cavity volume quantity that forms between the strip tool 62,63 is distinguished identical with arrangement position with the first gear substrate 2A and the first gear on the second gear substrate 2B, the second gear quantity and arrangement position in patrix 4 and the counterdie 5.
According to above-mentioned manufacturing installation, the utility model also proposes a kind of manufacture method that adopts this manufacturing installation to make the multilayer gear, and described manufacture method comprises the steps:
Step 1) patrix 4 and the counterdie 5 with gear die installs to respectively on the injection machine;
Step 2) described the first gear substrate 2A and the second gear substrate 2B are installed to respectively on described patrix 4 and the counterdie 5;
Circular cavity volume on the described middle tool 6 that step 3) will assemble and the first gear 2 of described the first gear substrate 2A and the second gear substrate 2B, the 3 respectively contrapositions of the second gear, and matched moulds clamps;
Step 4) in described injection mould, inject fluid, and to make the fluid coagulation forming is plastic sleeve, simultaneously described the first gear 2, the second gear 3 is set in axle sleeve 1 inside;
Step 5) open described patrix 4 and counterdie 5, and each separates with the strip tool in the middle tool 6, unloads the multilayer gear of solidification forming.
Multilayer gear of the present utility model has been simplified the gear structure of printer paper outlet, in injection hole 13 places design deep gouge 11, the problem of having avoided the multilayer gear to produce in installation process; And the center hole 23 of every layer gear is polygonal, makes gear rotate stressed more even when driving the paper turnover, prolonged the working life of gear.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. multilayer gear, it is characterized in that, this multilayer gear comprises at least two parallel and central shaft overlaps the first gear and the second gears, the center of described the first gear and the second gear offers respectively center hole, and the outside, outer ring of described the first gear and the second gear evenly is provided with two and is used for described the first gear and the second gear are separately fixed at the first gear substrate and the on-chip locating slot of the second gear; One axle sleeve runs through described center hole, with the parallel one that is connected and fixed on the second gear of described at least the first gear; Described axle sleeve is one-body molded by Shooting Technique, and is fixed together by this Shooting Technique and described at least the first gear and the second gear, and described axle sleeve middle part also offers fixed hole;
One end of described axle sleeve is provided with deep gouge, and the injection hole of described Shooting Technique is positioned at described deep gouge.
2. multilayer gear as claimed in claim 1, it is characterized in that, described multilayer gear is the double-layer gear that comprises the first gear and the second gear, described the first gear and the second gear are divided into three parts with described axle sleeve, the part that described axle sleeve is clipped between described the first gear and the second gear is the middle part, is positioned at the upper and lower that is respectively at two ends, described middle part; The center of described upper face is provided with described deep gouge, and the middle part of described deep gouge is provided with described fixed hole, and described fixed hole runs through described upper, middle and lower.
3. multilayer gear as claimed in claim 2 is characterized in that, is injected with numbering in the described axle sleeve also one-body moldedly, and described numbering is arranged in the described deep gouge.
4. multilayer gear as claimed in claim 2 is characterized in that, the center hole of described the first gear and the second Gear center is the identical polygonal of shape or circle.
5. multilayer gear as claimed in claim 4 is characterized in that, the center hole of described the first gear and described the second Gear center is circular, and evenly offers several fixed grooves on the profile of described circle.
6. multilayer gear as claimed in claim 5 is characterized in that, described fixed groove is four, and the center hole of described circle is divided into the quartering.
7. multilayer gear as claimed in claim 6 is characterized in that, described fixed groove is circular, and described fixed groove is clipped part with the profile of the center hole of described circle.
8. multilayer gear as claimed in claim 6 is characterized in that, the outer diameter of described axle sleeve is D, and the center hole maximum diameter of described the first gear and the second gear is D1, and the root diameter of described the first gear and the second gear is D2, described D1＜D＜D2.
9. multilayer gear as claimed in claim 1 is characterized in that, described axle sleeve is the acetal plastic axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220467815 CN202812118U (en) | 2012-09-12 | 2012-09-12 | Multi-layer gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220467815 CN202812118U (en) | 2012-09-12 | 2012-09-12 | Multi-layer gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812118U true CN202812118U (en) | 2013-03-20 |
Family
ID=47870991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220467815 Expired - Fee Related CN202812118U (en) | 2012-09-12 | 2012-09-12 | Multi-layer gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812118U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840304A (en) * | 2012-09-12 | 2012-12-26 | 东莞市奇利电子科技有限公司 | Multi-layer gear |
| CN106035925A (en) * | 2016-07-14 | 2016-10-26 | 如皋市包装食品机械有限公司 | Mauritius bean production device |
-
2012
- 2012-09-12 CN CN 201220467815 patent/CN202812118U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840304A (en) * | 2012-09-12 | 2012-12-26 | 东莞市奇利电子科技有限公司 | Multi-layer gear |
| CN102840304B (en) * | 2012-09-12 | 2016-10-19 | 东莞市精确电子科技有限公司 | A kind of multi-layer gear |
| CN106035925A (en) * | 2016-07-14 | 2016-10-26 | 如皋市包装食品机械有限公司 | Mauritius bean production device |
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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 |
Granted publication date: 20130320 Termination date: 20140912 |
|
| EXPY | Termination of patent right or utility model |