CN201900550U - Back pressure roller device - Google Patents
Back pressure roller device Download PDFInfo
- Publication number
- CN201900550U CN201900550U CN2010206099037U CN201020609903U CN201900550U CN 201900550 U CN201900550 U CN 201900550U CN 2010206099037 U CN2010206099037 U CN 2010206099037U CN 201020609903 U CN201020609903 U CN 201020609903U CN 201900550 U CN201900550 U CN 201900550U
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- CN
- China
- Prior art keywords
- axle sleeve
- pressure roller
- back pressure
- axle
- cylinder
- 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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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model relates to a back pressure roller device which comprises a rotating drum, two axle heads, two axle sleeves and two connecting pieces used for fixing the axle sleeves, wherein the two axle heads are respectively and fixedly connected with two ends of the rotating drum; the internal diameter of the axle sleeve is matched with the external diameter of the axle head, the external diameter of the axle sleeve is matched with the external diameter of the rotating drum, the axle sleeves are sleeved on the axle heads, one end of each axle sleeve is in contact with the rotating drum, and the other end of each axle sleeve is connected with the axle head through the connecting pieces. The back pressure roller device is designed into a removable split structure, two ends easy to wear are designed into two axle sleeves, and when the axle sleeves are worn, the connecting pieces can be removed to replace the axle sleeves, the whole back pressure roller device is not required to be replaced, so that the cost is saved, and the structure is simple.
Description
Technical field
The utility model relates to a kind of printed circuit board processing device, relates in particular to a kind of back pressure roller devices.
Background technology
As shown in Figure 1, in the manufacturing of printed circuit board, back pressure roller 01 is a kind of polish-brush machine that is used for, and realizes supporting polish-brush, guarantees the mechanism of printed circuit board Grinding Quality.In structure in the past, back pressure roller 01 generally includes the two ends that a cylinder 011 and 012, two spindle nose 012 of two spindle noses are fixedly connected on cylinder 011, adopts incorporate connected mode, two spindle noses 012 are used for being in transmission connection with transmission mechanism, and cylinder 011 is used for grinding.
As Fig. 1, Fig. 2 and shown in Figure 3, in the rabbet ink process of lapping of printed circuit board, because the inhomogeneities that polish-brush 02 consumes, the mid portion of polish-brush consumes more, bigger " dumbbell shaped " phenomenon in two of polish-brush generally all can occur.Big place, polish-brush 02 two is ground to back pressure roller 01 two ends easily, and is light then grind groove 03 at the two ends of back pressure roller 01, influences the nog plate quality, and the heavy back pressure roller 01 that then causes is rubbed.Grind in the operation of rabbet ink at printed circuit board, because grinding pressure is big especially, back pressure roller 01 is just more serious by the phenomenon that polish-brush damages.
The phenomenon of polish-brush this " dumbbell shaped " can be alleviated by evenly putting plate, polish-brush special " chamfered edge " processing etc., but can't thoroughly eradicate.Therefore, it is inevitable that back pressure roller 01 is worn, when occurring to have influence on the nog plate quality, because back pressure roller 01 adopts incorporate design than heavy wear, and it is higher to the accuracy requirement of circular motion, adopt the mode of repairing, at this moment poor effect just must change whole back pressure roller 01, cause serious waste, and increased manufacturing cost.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of back pressure roller devices, and this back pressure roller devices is simple in structure, need not whole replacing when being damaged by polish-brush, saves cost.The technical scheme that adopts is as follows:
A kind of back pressure roller devices comprises cylinder and two spindle noses, and two spindle noses are fixedlyed connected with the two ends of cylinder respectively, it is characterized in that: comprise that also two axle sleeves and two are used to make axle sleeve to be fixedly coupled part; The internal diameter of axle sleeve and the external diameter of spindle nose coupling, the external diameter of axle sleeve and the external diameter of cylinder coupling, axle sleeve is enclosed within on the spindle nose, and an end of axle sleeve contacts with cylinder, and the other end of axle sleeve is connected with spindle nose by connector.
Can both be fixedlyed connected by the mode of welding between spindle nose and the cylinder.
Polish-brush mainly is a two end portions at the back pressure roller to the wearing and tearing of back pressure roller, and mid portion is not easy to be worn, the two ends that the back pressure roller is worn easily are designed to axle sleeve, be connected by connector between axle sleeve and cylinder and the spindle nose, when axle sleeve is worn and torn by polish-brush, as long as remove connector, changing axle sleeve just can, need not to change whole back pressure roller, saved cost greatly, said structure is also quite simple.
In order to reach evenly stressed purpose of connector, as preferred version of the present utility model, described connector comprises back-up ring; The madial wall of the end that described axle sleeve is connected with connector is provided with first annular groove; The back-up ring and first annular groove are complementary, and are in first annular groove.In the grinding rabbet ink operation of printed circuit board, grinding pressure is big especially, and axle sleeve can produce huge torsion to connector, and connector is twisted off easily, and connector is designed to back-up ring, makes the stressed homogenising of connector, is not easy to be twisted off.Back-up ring can also can pass through alternate manner connecting bushing and spindle nose by screw along being locked axially on the spindle nose of back pressure roller.Connector also can be to comprise other fixed forms such as block.
Better locate purpose in order to reach axle sleeve, as another kind of preferred version of the present utility model, the end that described spindle nose is connected with cylinder is provided with annular protrusion, and the inwall of the end that described axle sleeve contacts with cylinder is provided with second annular groove; The annular protrusion and second annular groove are complementary, and are in second annular groove.The annular protrusion and second annular groove by setting is complementary are located axle sleeve better.
Make back pressure roller devices smooth surface in order to reach, and long-lived purpose, as the further preferred version of the utility model, also comprising hard chromium layers, hard chromium layers is coated on the outer surface of cylinder and axle sleeve.Outer surface at cylinder and axle sleeve plates one deck hard chrome, overrides the slit of axle sleeve and cylinder contact position, makes the smooth surface of back pressure roller devices, makes the wearability of back pressure roller better, more durable simultaneously, further reduces the number of times of changing axle sleeve.
Back pressure roller devices of the present utility model is designed to dismountable minute body structure, and the two ends that are worn easily are designed to two axle sleeves, when axle sleeve is worn, changes axle sleeve, need not to change whole back pressure roller devices, has saved cost, and simple in structure.
Description of drawings
Fig. 1 is the schematic diagram of back pressure roller and polish-brush in the existing polish-brush machine
Fig. 2 is the schematic diagram after the polish-brush loss in the existing polish-brush machine
Fig. 3 is the schematic diagram that existing polish-brush machine back pressure roller is worn
Fig. 4 is the structural representation of the utility model preferred implementation
The specific embodiment
Be described further below in conjunction with accompanying drawing and preferred implementation of the present utility model.
As shown in Figure 4, this back pressure roller devices comprises that cylinder 1, two spindle noses 2, two axle sleeves 3 and two are used to the back-up ring 4 that makes axle sleeve fixing; Two spindle noses 2 are fixedlyed connected with the two ends of cylinder 1 respectively, the external diameter coupling of the internal diameter of axle sleeve 3 and spindle nose 2, and the external diameter coupling of the external diameter of axle sleeve 3 and cylinder 1, axle sleeve 3 is enclosed within on the spindle nose; One end of axle sleeve 3 contacts with cylinder 1, and the other end of axle sleeve 3 is connected with spindle nose 2 by back-up ring 4.
The madial wall of the end that axle sleeve 3 is connected with back-up ring 4 is provided with first annular groove 5, and the back-up ring 4 and first annular groove 5 are complementary.Back-up ring 4 is by screw being locked axially on the spindle nose 2 along the back pressure roller.
The end that spindle nose 2 is connected with cylinder 1 is provided with annular protrusion 6, and the inwall of the end that axle sleeve 3 contacts with cylinder 1 is provided with second annular groove 7, and the annular protrusion 6 and second annular groove 7 are complementary.
Also comprise hard chromium layers 8, hard chromium layers 8 is coated on the outer surface of cylinder 1 and axle sleeve 3.Hard chromium layers 8 overrides the slit of axle sleeve 3 and cylinder 1 contact position, makes the smooth surface of back pressure roller devices, makes the wearability of back pressure roller better simultaneously.
In other embodiments, connector can comprise block, and block is fixed on the spindle nose.
Claims (4)
1. a back pressure roller devices comprises cylinder and two spindle noses, and two spindle noses are fixedlyed connected with the two ends of cylinder respectively, it is characterized in that: comprise that also two axle sleeves and two are used to make axle sleeve to be fixedly coupled part; The internal diameter of axle sleeve and the external diameter of spindle nose coupling, the external diameter of axle sleeve and the external diameter of cylinder coupling, axle sleeve is enclosed within on the spindle nose, and an end of axle sleeve contacts with cylinder, and the other end of axle sleeve is connected with spindle nose by connector.
2. back pressure roller devices as claimed in claim 1 is characterized in that: described connector comprises back-up ring; The madial wall of the end that described axle sleeve is connected with connector is provided with first annular groove; The back-up ring and first annular groove are complementary, and are in first annular groove.
3. back pressure roller devices as claimed in claim 1 is characterized in that: the end that described spindle nose is connected with cylinder is provided with annular protrusion, and the inwall of the end that described axle sleeve contacts with cylinder is provided with second annular groove; The annular protrusion and second annular groove are complementary, and are in second annular groove.
4. as claim 1 or 2 or 3 described back pressure roller devices, it is characterized in that: comprise that also hard chromium layers, hard chromium layers are coated on the outer surface of cylinder and axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206099037U CN201900550U (en) | 2010-11-12 | 2010-11-12 | Back pressure roller device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206099037U CN201900550U (en) | 2010-11-12 | 2010-11-12 | Back pressure roller device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201900550U true CN201900550U (en) | 2011-07-20 |
Family
ID=44271155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206099037U Expired - Fee Related CN201900550U (en) | 2010-11-12 | 2010-11-12 | Back pressure roller device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201900550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398580A (en) * | 2013-08-15 | 2013-11-20 | 江苏省元迅建材科技有限公司 | Detachable roller structure |
| CN105710764A (en) * | 2014-12-03 | 2016-06-29 | 北大方正集团有限公司 | Transmission device and board grinding machine |
-
2010
- 2010-11-12 CN CN2010206099037U patent/CN201900550U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398580A (en) * | 2013-08-15 | 2013-11-20 | 江苏省元迅建材科技有限公司 | Detachable roller structure |
| CN103398580B (en) * | 2013-08-15 | 2015-08-12 | 江苏省元迅建材科技有限公司 | Detachable roller structure |
| CN105710764A (en) * | 2014-12-03 | 2016-06-29 | 北大方正集团有限公司 | Transmission device and board grinding 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 |
Granted publication date: 20110720 Termination date: 20141112 |
|
| EXPY | Termination of patent right or utility model |