CN104648742A - Friction-type constant tension mechanism - Google Patents
Friction-type constant tension mechanism Download PDFInfo
- Publication number
- CN104648742A CN104648742A CN201310588751.5A CN201310588751A CN104648742A CN 104648742 A CN104648742 A CN 104648742A CN 201310588751 A CN201310588751 A CN 201310588751A CN 104648742 A CN104648742 A CN 104648742A
- Authority
- CN
- China
- Prior art keywords
- friction
- material feeding
- cam
- conveyor belt
- driven shaft
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C9/00—Details of labelling machines or apparatus
- B65C9/08—Label feeding
- B65C9/18—Label feeding from strips, e.g. from rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C9/00—Details of labelling machines or apparatus
- B65C9/40—Controls; Safety devices
- B65C9/42—Label feed control
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- Labeling Devices (AREA)
Abstract
A friction-type constant tension mechanism is provided in the invention. The mechanism is used in auto-labeling devices applied in cell phones and various digital products and can achieve a constant tension, wherein a label, of which a disk-type material feeding method is employed, is controlled by a cam during a high-speed and intermittent motion process in a controllable friction manner. The friction-type constant tension mechanism is composed of a rocker arm, a semicircular damping shoe block, a friction piece, a driven shaft, a cam and a spring. When the mechanism works, a material feeding conveyor belt wrapping a material rolling-up disk is tightened when wrap-passing the rocker arm and then the cam fixedly connected to the rocker arm is rotated by the rocker arm, so that the semicircular damping shoe block is expanded and a friction force between the semicircular damping shoe block and the driven shaft is reduced, thereby loosening the material feeding conveyor belt. When the material feeding conveyor belt is loosened, by means of the rocker arm, the torque to the axial line of the cam is reduced, so that the friction force between the semicircular damping shoe block and the driven shaft is increased and the material feeding conveyor belt is tightened again. By means of dynamic balance between the tension of the material feeding conveyor belt and the friction force between the semicircular damping shoe block and the driven shaft, the material feeding conveyor belt is maintained to be a situation of a constant tension.
Description
Technical field
The present invention is a kind ofly applied on the automatic labeling label apparatus of mobile phone and all kinds of digital product, adopts the mode of controllable friction, at a high speed, in intermittent moment process, to adopting the label of plate-like feed by cam production, automatically realize the mechanism of identical tension.
Background technology
For realizing all kinds of technological requirement in the electronic machine of mobile phone and all kinds of digital product and automobile, need paste as multiple film cut piece such as conductive rubber, protective film, adhesive tape, Acrylic Foam Tape, protection foams.Attaching process is many by completing by hand, not only inefficiency, and because simple repetition, therefore quality also not easily ensures.For solving this kind of problem, automated tag has been gradually adopted to paste equipment at present.But all kinds of label pastes, and equipment all adopts at a high speed, interval supplies label form, then cutting part label just produces violent speed fluctuations by with plate-like feed carrier band, thus causes the tension force of feed carrier band also to have greatly changed.Friction-type constant tensile control mechanism provided by the invention, automatically can be controlled the mode of friction, realize feed carrier band constant-tension, reach and improve the object that label pastes quality by cam.
Summary of the invention
Automatic labeling label apparatus at a high speed in order to realize, make the label of plate-like feed in interval feeder process, automatically can realize identical tension, can meet more and more higher paste requirement with it.The invention provides a kind of friction-type constant tensile control mechanism be made up of rocking arm, semicircle damping hoof block, friction shoe, driven shaft, cam, spring etc.The core component of this disengagement gear---two semicircle damping hoof blocks are under the combined action of spring and cam, utilize the damping moment of friction force controlling diaphragm cut piece supply disk, the tension force that cam rotates by feed carrier band drives, utilize the dynamical equilibrium of friction force between the tension force of feed carrier band and damping hoof block and driven shaft, make feed carrier band keep constant-tension state.
technical scheme:
Film cut piece supply disk tensioner is on the driven shaft of constant tensile control mechanism, and driven shaft pins by two semicircle damping hoof blocks under the action of the spring frictionally.During work, driven by servomotor receives rotation of disc, and the feed carrier band be wound around on rewinding dish is tauted when walking around rocking arm, and a moment of rotation is produced to the camshaft connected firmly with it, power cam rotate, thus semicircle damping hoof block is opened, and between driven shaft, friction force diminishes.Driven shaft and film cut piece supply disk are together with tensioner, and co-rotational, therefore feed carrier band will be made to become slack, then rocking arm drives camshaft line to counter-rotation, and make friction force between damping hoof block and driven shaft become large, feed carrier band is tensioned again.Utilize the dynamical equilibrium of friction force between the tension force of feed carrier band and damping hoof block and driven shaft, make feed carrier band keep constant-tension state.
the invention has the beneficial effects as follows:
The present invention is a kind ofly applied on the automatic labeling label apparatus of mobile phone and all kinds of digital product, adopts the mode of controllable friction, at a high speed, in intermittent moment process, make the label of employing plate-like feed automatically can realize the mechanism of identical tension.Automatically the mode controlling to rub by cam realizes feed carrier band constant-tension, reaches and improves the object that label pastes quality.
accompanying drawing illustrates:
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structure principle chart of the present invention.
1. rocking arm, 2. semicircle damping hoof block, 3. friction shoe, 4 driven shafts, 5. cam, 6. spring, 7. feed carrier band
detailed description of the invention:
As shown in Figure 1, film cut piece supply disk tensioner is on the driven shaft (4) of constant tensile control mechanism, and driven shaft (4) pins by two semicircle damping hoof block (2) frictionally under the effect of spring (6).During work, driven by servomotor receives rotation of disc, the feed carrier band (7) be wound around on rewinding dish is tauted when walking around rocking arm (1), then by rocking arm (1), a moment of rotation is produced to the cam connected firmly with it (5) axis, power cam (5) rotate, thus semicircle damping hoof block (2) is opened, and friction force diminishes between driven shaft (4), driven shaft (4) is together with film cut piece supply disk tensioner, and common rotation, therefore feed carrier band (7) will be made to become slack, then rocking arm (1) band moving cam (5) axis is to counter-rotation, friction force between damping hoof block (2) and driven shaft (4) is made to become large, feed carrier band (7) is tensioned again.Utilize the dynamical equilibrium of friction force between the tension force of feed carrier band (7) and damping hoof block (2) and driven shaft (4), make feed carrier band (7) keep constant-tension state.
Claims (1)
1. a friction-type identical tension structure, adopts damping hoof block under the combined action of spring and cam, controls the version of supply disk damping moment, be made up of rocking arm, semicircle damping hoof block, friction shoe, driven shaft, cam, spring; It is characterized in that: in device, have two semicircle damping hoof blocks be clamped in by spring force on feed axle, and be positioned at two semicircular damping hoof block opening part, open power-actuated cam by feed carrier band, utilize the friction force of damping hoof block and feed between centers to keep identical tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588751.5A CN104648742A (en) | 2013-11-21 | 2013-11-21 | Friction-type constant tension mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588751.5A CN104648742A (en) | 2013-11-21 | 2013-11-21 | Friction-type constant tension mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104648742A true CN104648742A (en) | 2015-05-27 |
Family
ID=53240472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310588751.5A Pending CN104648742A (en) | 2013-11-21 | 2013-11-21 | Friction-type constant tension mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104648742A (en) |
-
2013
- 2013-11-21 CN CN201310588751.5A patent/CN104648742A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |