CN203003954U - Lower blade of circular blade set - Google Patents
Lower blade of circular blade set Download PDFInfo
- Publication number
- CN203003954U CN203003954U CN 201220732248 CN201220732248U CN203003954U CN 203003954 U CN203003954 U CN 203003954U CN 201220732248 CN201220732248 CN 201220732248 CN 201220732248 U CN201220732248 U CN 201220732248U CN 203003954 U CN203003954 U CN 203003954U
- Authority
- CN
- China
- Prior art keywords
- circular
- blade
- circular knife
- rotating shaft
- check rings
- 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 - Lifetime
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Abstract
The utility model discloses a lower blade of a circular blade set. The lower blade of the circular blade set comprises a rotary shaft. The rotary shaft is provided with a plurality of check rings. Gaps exist among the plurality of check rings. According to the lower blade of the circular blade set, a roller in the prior art is changed to the rotary shaft which is provided with the plurality of check rings, and therefore circular blades on an upper blade are attached to the check rings on the lower blade, cutting edges of the circular blades exceed the check rings so that abrasion speed of the circular blades on the upper blade of the circular blade set and a thin film can be completely cut off when the circular blades are slightly abraded.
Description
Technical field
The utility model relates to polytetrafluoroethylene (PTFE) cutter sweep when rolling up, especially a kind of bottom knife of circular knife group.
Background technology
Raw material band is a kind of assistant product commonly used during hot-water heating is installed, for the pipe fitting junction, strengthening the seal of pipeline junction. the raw material band chemical name is polytetrafluoroethylene (PTFE), all use the ordinary white teflin tape in HVAC and plumbing at present, and natural gas line etc. also have special teflin tape, primary raw material is all polytetrafluoroethylene (PTFE) in fact, and only some techniques are different.A lot of raw material band enterprise all adopts flat blade to cut, and flat blade is cut existent defect: the raw material band of 1, cutting " burr " usually occur or minute sinuate phenomenon of tangent line is affected the product quality class.The tension force of 2, cutting belt because of flat blade has higher requirements, and one meets that the belt tension variation can occur that belt has local undivided phenomenon and the belt that occurs shutting down and will not cut cuts off and causes waste; Be unfavorable for cutting, batching the propelling of automation.3, the blade cost is high, and allowing blade replacement is wanted in per tour, the shortcomings such as inefficiency.Therefore raw material strip slitting is brought into use circular knife, it is the cutting mechanism of 2313719 quick banding machine as China Patent Publication No., it comprises roller, walk around the circumferential surface of roller and be stretched in this surperficial film, the sidepiece of described roller is provided with circular knife, and this circular knife is arranged in cutter holder, and the circle centre position of described circular knife is provided with the circular knife rotating shaft, make circular knife to rotate around the circular knife rotating shaft, described cutter holder is arranged on pneumatic actuating device.This cutting device has used circular knife, but when cutting film due to circular knife the edge of a knife of circular knife all the time with roller contact, can make like this circular knife rate of wear very fast, and circular knife slightly has wearing and tearing the phenomenon that film can not be cut fully will occur.
Summary of the invention
The utility model is not enough for prior art, and a kind of bottom knife of circular knife group is provided, and uses the cutter of the circular knife group of this kind bottom knife to be difficult for being worn.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of bottom knife of circular knife group, comprise rotating shaft, and be provided with some back-up rings in described rotating shaft, there is the space between described some back-up rings.
In technique scheme, preferred, be provided with positioning sleeve in described rotating shaft.
In technique scheme, preferred, be provided with retaining washer in described rotating shaft.
The utility model compared with prior art, have following beneficial effect: the utility model is provided with some back-up rings for roller is originally changed in a rotating shaft, make circular knife and the back-up ring on bottom knife on cutter fit, and the cutting edge of circular knife surpasses back-up ring, the rate of wear of the circular knife on the circular knife group that can slow down like this cutter, and slightly have wearing and tearing still film can be cut apart fully; Simultaneously, being used in conjunction with of circular knife and back-up ring cut as scissors and cut, and two of up and down blade is cut off middle raw material band, more can ensure the quality of products, and makes cut surface more smooth, smooth, filament do not occur, realizes putting forward high-quality purpose.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail: referring to Fig. 1, a kind of bottom knife of circular knife group, comprise rotating shaft 201, be provided with some back-up rings 202 in described rotating shaft 201, there is the space between described some back-up rings 202, be provided with positioning sleeve 300 in described rotating shaft 201, be provided with retaining washer 400 in described rotating shaft 201, retaining washer 400 is used for back-up ring 202 fixing.
The present embodiment has the space between the back-up ring 202 due to bottom knife in use, circular knife and the back-up ring on bottom knife 202 on cutter are adjacent to, the cutting edge of circular knife surpasses back-up ring 202, the rate of wear of the circular knife on the circular knife group that can slow down like this cutter, and slightly have wearing and tearing still film can be cut apart fully.
Claims (3)
1. the bottom knife of a circular knife group, is characterized in that: comprise rotating shaft (201), be provided with some back-up rings (202) in described rotating shaft (201), have the space between described some back-up rings (202).
2. the bottom knife of a kind of circular knife group as claimed in claim 1, is characterized in that: be provided with positioning sleeve (300) in described rotating shaft (201).
3. the bottom knife of a kind of circular knife group as claimed in claim 1 or 2, is characterized in that: be provided with retaining washer (400) in described rotating shaft (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220732248 CN203003954U (en) | 2012-12-27 | 2012-12-27 | Lower blade of circular blade set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220732248 CN203003954U (en) | 2012-12-27 | 2012-12-27 | Lower blade of circular blade set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203003954U true CN203003954U (en) | 2013-06-19 |
Family
ID=48595586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220732248 Expired - Lifetime CN203003954U (en) | 2012-12-27 | 2012-12-27 | Lower blade of circular blade set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203003954U (en) |
-
2012
- 2012-12-27 CN CN 201220732248 patent/CN203003954U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |