CN203900841U - Upper mold for performing press-mounting on fan rotor and motor shaft - Google Patents
Upper mold for performing press-mounting on fan rotor and motor shaft Download PDFInfo
- Publication number
- CN203900841U CN203900841U CN201420360272.8U CN201420360272U CN203900841U CN 203900841 U CN203900841 U CN 203900841U CN 201420360272 U CN201420360272 U CN 201420360272U CN 203900841 U CN203900841 U CN 203900841U
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- CN
- China
- Prior art keywords
- motor shaft
- mould body
- rubber tube
- fan rotor
- upper mould
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an upper mold for performing press-mounting on a fan rotor and a motor shaft. The upper mold comprises a steel upper mold body (1), wherein an axial through hole (1.1) is formed in the upper mold body (1); a combined rubber tube is sleeved in the axial through hole (1.1) and consists of an inner-layer soft rubber tube (2.1) and an outer-layer hard rubber tube (2.2); the inner-layer soft rubber tube (2.1) and the outer-layer hard rubber tube (2.2) are formed by injection molding by using an injection mold; a plurality of axial convex ribs (2.21) distributed along the circumferential direction are arranged on the outer side wall of the outer-layer hard rubber tube (2.2); a plurality of clamping grooves matched with the axial convex ribs (2.21) one to one in a clamping mode are formed in the inner side wall of the axial through hole (1.1) of the upper mold body (1). The upper mold can be used for effectively preventing the wear and scratch of the motor shaft.
Description
Technical field
The utility model relates to fan rotor and motor shaft technology of pressure mounting field, is specifically a kind of for press-fiting the patrix of fan rotor and motor shaft.
Background technology
In press-fiting in process of fan rotor and motor shaft, for motor shaft close-fitting is installed in the central shaft hole of fan rotor, be not that whole motor shaft is made to the structure with central shaft hole close-fitting.And just on the outer circle wall of the close-fitting section of motor shaft punch forming go out many floating screeds that arrange circumferentially so that the close-fitting section diameter of motor shaft is greater than central shaft hole internal diameter, form tight fit with central shaft hole.The diameter of other shaft part parts of motor shaft is less than central shaft hole internal diameter to form matched in clearance, the loose fit being commonly called as in the industry at once with central shaft hole.Like this before press-fiting, just can be by the first partial insertion of motor shaft in the central shaft hole of fan rotor, now the close-fitting section of motor shaft can not directly be inserted into the outer fan rotor top that is exposed in central shaft hole because diameter is greater than central shaft hole internal diameter, then utilize hydraulic press and the mould just can be by the close-fitting section close-fitting of motor shaft in central shaft hole, thereby realize press-fiting of fan rotor and motor shaft.
When press-fiting fan rotor and motor shaft, the mould using comprises upper die and lower die.While press-fiting, first counterdie clamping is positioned on the workbench of hydraulic press, then there is the fan rotor of motor shaft to be positioned in the center positioning hole of counterdie by stretching out the motor shaft part part of fan rotor bottom loose fit, then patrix is enclosed within by its central through hole in the close-fitting section of stretching out fan rotor top, now motor shaft is also reserved with part shaft part and stretches out patrix top.Now open hydraulic press, the drift of hydraulic press moves compacting downwards, the motor shaft part part of stretching out patrix top is pressed in the central through hole of patrix completely, now the close-fitting section of motor shaft enters in the central shaft hole of fan rotor simultaneously, thereby motor shaft is crimped in fan rotor completely.
When the mould that adopts above structure press-fits fan rotor and motor shaft, for bearing stamping machine drift pressure, patrix integral body is made by steel material, although load intensity is large, but integral hardness is also very high, the patrix of the high rigidity low motor shaft of scratch hardness that must wear and tear when press-fiting, once and motor shaft wearing and tearing scratch, after motor shaft and bearing fit use, will produce large noise, and the generation of noise is one of shortcoming that blower fan is fatal, had a strong impact on the total quality of blower fan.
Utility model content
The technical problems to be solved in the utility model is, provide a kind of can effectively prevent that motor shaft wearing and tearing from scratching for press-fiting the patrix of fan rotor and motor shaft
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: comprise mould body on steel, upper mould body is provided with axially extending bore, in axially extending bore, be arranged with combination rubber tube, combination rubber tube is by internal layer soft rubber pipe and outer vulcanie pipe, internal layer soft rubber pipe and outer vulcanie pipe are injection molded through injection mold, the lateral wall of outer vulcanie pipe is provided with the axial convex tendon that many edges circumferentially distribute, and the axially extending bore madial wall of upper mould body is provided with a plurality of and axial convex tendon and blocks one by one the draw-in groove of joining.
The wall thickness of upper mould body upper end is 2～3 times of lower end wall thickness in upper mould body, and between upper mould body upper end and lower end in upper mould body, the joint face transition by level is connected.
The end of vulcanie pipe is arranged with to be convenient to the screwed hole extracted of combination rubber tube, and the screw thread on screwed hole is saw-tooth thread.
Adopt after above structure, the utlity model has following advantage: of the present utility model for the patrix that press-fits fan rotor and motor shaft by sheathed combination rubber tube in the axially extending bore of mould body on steel after, what make that motor shaft touches in press-fiting process is the soft rubber pipe of internal layer, and soft rubber pipe quality is soft, hardness is much smaller than motor shaft, therefore in press-fiting process, motor shaft can not be worn scuffing, be fitted in after the motor shaft and bearing fit use in rotor, can not produce noise, effective guarantee the total quality of blower fan, and the stickiness of soft rubber pipe and motor shaft is better, when press-fiting, to motor shaft, can play good guide effect, the skin that combines in addition rubber tube consists of vulcanie pipe, vulcanie pipe is easier to be arranged in the axially extending bore of upper mould body than internal layer soft rubber pipe, and the lateral wall that adds vulcanie pipe is provided with axial convex tendon, and the axially extending bore madial wall of upper mould body is provided with the draw-in groove to convex tendon for clamping shaft, by draw-in groove clamping shaft, to the mode of convex tendon, realize installation, solid and reliable, be difficult for channeling bit movement, and when mounted, directly after making axial convex tendon aim at draw-in groove, the end of upper mould body just whole combination rubber tube can be pushed in the axially extending bore of mould body accurately, the mode that adopts end to push realizes installation, operate and save time and facilitate, internal layer soft rubber pipe and outer vulcanie pipe are injection molded through injection mold in addition, internal layer soft rubber pipe and outer vulcanie pipe combine together, firmly inseparable.
Further, the wall thickness of upper mould body upper end is 2～3 times of lower end wall thickness in upper mould body, the thick thin structure that arranges of the wall thickness one of upper mould body, can reach the object that province's material reduces costs on the one hand, go up on the other hand that mould body upper end wall is thicker can carry enough pressure, ensured the intensity of patrix integral body, and between upper mould body upper end and lower end in upper mould body, the joint face transition by level is connected, the joint face of level is easy to process, and when gripping, holding has the keeping out of joint face of level while going up mould body middle and lower part and is unlikely to landing.
Further, the end of vulcanie pipe is arranged with to be convenient to the screwed hole extracted of combination rubber tube, after screwed hole arranges, after combination rubber tube is scrapped, by one, screwing with screwed hole the screw rod matching just can extract combination rubber tube, now up filling a new combination rubber tube in the axially extending bore of mould body more just can reuse, make price want mould body on more expensive steel still can continue to use with respect to combination rubber tube, and screw thread on screwed hole is saw-tooth thread, when saw-tooth thread and screw rod screw, degree of laminating is high, when extracting, be not prone to de-tooth phenomenon, avoided the generation of empty sinking phenomenon.
Accompanying drawing explanation
Fig. 1 is that the utility model is for press-fiting the sectional structure schematic diagram of the patrix of fan rotor and motor shaft.
Fig. 2 is that the utility model is for press-fiting the plan structure schematic diagram of the patrix of fan rotor and motor shaft.
As shown in the figure: mould body on 1,1.1 axially extending bores, 2.1 soft rubber pipes, 2.2 vulcanie pipes, 2.21 axial convex tendons, 2.22 screwed holes.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in the figure, of the present utility model for press-fiting the patrix of fan rotor and motor shaft, comprise mould body 1 on steel, upper mould body 1 is provided with axially extending bore 1.1.
In axially extending bore 1.1, be arranged with combination rubber tube, combination rubber tube is by internal layer soft rubber pipe 2.1 and outer vulcanie pipe 2.2.Internal layer soft rubber pipe 2.1 and outer vulcanie pipe 2.2 are injection molded through injection mold.The lateral wall of outer vulcanie pipe 2.2 is provided with the axial convex tendon 2.21 that many edges circumferentially distribute, and axially extending bore 1.1 madial walls of upper mould body 1 are provided with a plurality of and axial convex tendon 2.21 and block one by one the draw-in groove of joining.
The wall thickness of upper mould body 1 upper end is 2～3 times of lower end wall thickness in upper mould body 1, and between upper mould body 1 upper end and lower end in upper mould body 1, the joint face transition by level is connected.
The end of vulcanie pipe 2.2 is arranged with to be convenient to the screwed hole 2.22 extracted of combination rubber tube, and the screw thread on screwed hole 2.22 is saw-tooth thread.
In the injection moulding process of combination rubber tube, the material of soft rubber pipe can adopt the common strapping material of easily purchasing to be made, and the material of vulcanie pipe can select the common plastic knife handle material of easily purchasing to be made.
Claims (3)
1. one kind for press-fiting the patrix of fan rotor and motor shaft, comprise mould body on steel (1), upper mould body (1) is provided with axially extending bore (1.1), it is characterized in that: axially extending bore is arranged with combination rubber tube in (1.1), combination rubber tube is by internal layer soft rubber pipe (2.1) and outer vulcanie pipe (2.2), internal layer soft rubber pipe (2.1) and outer vulcanie pipe (2.2) are injection molded through injection mold, the lateral wall of outer vulcanie pipe (2.2) is provided with the axial convex tendon (2.21) that many edges circumferentially distribute, axially extending bore (1.1) madial wall of upper mould body (1) is provided with a plurality of and axial convex tendon (2.21) and blocks one by one the draw-in groove of joining.
2. according to claim 1 for press-fiting the patrix of fan rotor and motor shaft, it is characterized in that: the wall thickness of upper mould body (1) upper end is 2～3 times of lower end wall thickness in upper mould body (1), and between upper mould body (1) upper end and the middle lower end of upper mould body (1), the joint face transition by level is connected.
3. according to claim 1 for press-fiting the patrix of fan rotor and motor shaft, it is characterized in that: the end of vulcanie pipe (2.2) is arranged with to be convenient to the screwed hole (2.22) extracted of combination rubber tube, and the screw thread on screwed hole (2.22) is saw-tooth thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360272.8U CN203900841U (en) | 2014-07-01 | 2014-07-01 | Upper mold for performing press-mounting on fan rotor and motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360272.8U CN203900841U (en) | 2014-07-01 | 2014-07-01 | Upper mold for performing press-mounting on fan rotor and motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203900841U true CN203900841U (en) | 2014-10-29 |
Family
ID=51775132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420360272.8U Expired - Fee Related CN203900841U (en) | 2014-07-01 | 2014-07-01 | Upper mold for performing press-mounting on fan rotor and motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203900841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097047A (en) * | 2014-07-01 | 2014-10-15 | 宁波狮球通风机电有限公司 | Upper die for press-fitting of fan rotor and motor shaft |
-
2014
- 2014-07-01 CN CN201420360272.8U patent/CN203900841U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097047A (en) * | 2014-07-01 | 2014-10-15 | 宁波狮球通风机电有限公司 | Upper die for press-fitting of fan rotor and motor shaft |
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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: 20141029 Termination date: 20150701 |
|
| EXPY | Termination of patent right or utility model |