CN111559172A - Powder removing device - Google Patents
Powder removing device Download PDFInfo
- Publication number
- CN111559172A CN111559172A CN202010529082.4A CN202010529082A CN111559172A CN 111559172 A CN111559172 A CN 111559172A CN 202010529082 A CN202010529082 A CN 202010529082A CN 111559172 A CN111559172 A CN 111559172A
- Authority
- CN
- China
- Prior art keywords
- piece
- impact
- removing device
- powder removing
- mounting seat
- 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.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 49
- 230000006835 compression Effects 0.000 claims description 26
- 238000007906 compression Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 9
- 238000005191 phase separation Methods 0.000 claims description 2
- 238000010023 transfer printing Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 4
- 238000005381 potential energy Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F16/00—Transfer printing apparatus
- B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2235/00—Cleaning
- B41P2235/10—Cleaning characterised by the methods or devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ink Jet (AREA)
Abstract
The invention relates to the technical field of thermal transfer printing, and particularly discloses a powder removing device, which comprises: a mounting seat; an impact member that can approach or depart from the back surface of the heat transfer film; the ejection assembly is connected with the impact piece and used for driving the impact piece to reciprocate to impact the back surface of the heat transfer film in a linear manner; the ejection assembly comprises an elastic piece, a moving piece and a driving mechanism, the elastic piece is connected between the mounting seat and the impact piece, the moving piece can be linked with the impact piece to drive the elastic piece to deform and store energy, or separated from the impact piece to drive the impact piece to eject towards the back of the heat transfer film, and the driving mechanism is used for driving the moving piece to move periodically to drive the moving piece to be linked with or separated from the impact piece. Above-mentioned powder clearing device utilizes to launch the subassembly and drives the reciprocal straight line impact heat-transfer die's of impact piece back, launches the mode and can produce great impact force to heat-transfer die to clear away unnecessary powder totally, and then ensured the quality stability of the product after the heat-transfer seal.
Description
Technical Field
The invention relates to the technical field of thermal transfer printing, in particular to a powder removing device.
Background
The thermal transfer printing process generally includes printing a pattern on a thermal transfer printing film, scattering hot melt powder on the thermal transfer printing film through a powder scattering mechanism, attaching the powder to the pattern, removing the redundant powder through a powder removing device, and then transferring and molding the pattern on a printing stock in a thermal transfer printing mode.
As shown in fig. 1, a conventional powder removing device for a thermal transfer printing apparatus includes two disks 1 'that rotate coaxially, a plurality of roller strips 2' are connected between the two disks 1 ', the plurality of roller strips 2' are uniformly distributed circumferentially around an axis of the disk 1 ', the powder removing device is located on a back surface of the thermal transfer printing film 100, when the disks 1' rotate, one of the roller strips 2 'can touch the back surface of the thermal transfer printing film 100, and different roller strips 2' sequentially collide with the back surface of the thermal transfer printing film 100 to remove excess powder.
However, the roller strip 2' of the powder removing device having such a configuration has a small impact on the thermal transfer film 100, and it is difficult to remove excess powder, and further, spots are generated on the substrate after thermal transfer in a subsequent step, or the thickness of the printed layer is not uniform.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the powder removing device, the powder removing device removes redundant powder on the heat transfer film in an ejection impact mode, the removing effect is very good, and the quality stability of a product after heat transfer printing is ensured.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the powder removing device of the present invention comprises: a mounting seat; the impact piece is movably arranged on the mounting seat and can approach or depart from the back surface of the heat transfer film; the ejection assembly is arranged on the mounting seat, is connected with the impact piece and is used for driving the impact piece to reciprocate to impact the back surface of the heat transfer film in a linear manner; the ejection assembly comprises an elastic piece, a moving piece and a driving mechanism, the elastic piece is connected between the mounting seat and the impact piece, the moving piece can be linked with the impact piece to drive the elastic piece to deform and store energy or separated from the impact piece to drive the elastic piece to drive the impact piece to pop up towards the back of the heat transfer film, and the driving mechanism is used for driving the moving piece to move periodically to drive the moving piece to be linked with or separated from the impact piece. The powder clearing device of above structure has utilized the subassembly of launching ingeniously to drive the back that strikes the reciprocal straight line impact heat-transfer die of piece, launch the subassembly and pass through actuating mechanism drive moving part and strike a looks linkage and make the elastic component energy storage, then the moving part with strike when the piece breaks away from impact the piece and pop out to the heat-transfer die under the restoring force effect of elastic component, this mode of launching can produce great impact force to the heat-transfer die to clear away unnecessary powder totally, and then ensured the stability of quality of the product after the heat-transfer die.
As a preferred embodiment of the present invention, the driving mechanism is a rotation driver for driving the movable member to rotate, the movable member includes a rotating shaft portion driven by the rotation driver and an eccentric portion disposed on the rotating shaft portion, the impact member is provided with an abutting portion engaged with the eccentric portion, and the eccentric portion periodically contacts with or separates from the abutting portion during rotation. When the moving part rotates to eccentric portion and contact portion, the impact piece drives the elastic piece to generate elastic potential energy, when the moving part rotates to eccentric portion and contact portion phase separation, the elastic potential energy of the elastic piece pops the impact piece towards the back of the heat transfer film, thereby clearing away redundant powder on the heat transfer film with larger impact force, the clearing effect of the powder clearing device of the structure is better, and the rotary driver can drive the eccentric portion to rapidly contact and separate with the contact portion, so that the powder clearing device achieves extremely high powder clearing efficiency.
As a preferred embodiment of the above technical solution, the eccentric portion includes a cycloid curved surface, the moving member is linked with the impact member to deform the elastic member to store energy, the end of the cycloid curved surface with the smaller curvature radius and the end of the cycloid curved surface with the larger curvature radius are sequentially contacted with the abutting portion, and the deformation amount of the impact member to press the elastic member can be increased in the process that the abutting portion moves towards the end of the cycloid curved surface with the larger curvature radius along the end of the cycloid curved surface with the smaller curvature radius, so that the kinetic energy of the impact member in ejection is increased, and the surplus powder can be cleaned.
Further preferably, a first plane abutting against the abutting part is connected between the end, with the smaller curvature radius, of the cycloid cambered surface and the rotating shaft part, the abutting part is firstly in contact with the first plane and then in contact with the cycloid cambered surface after passing through the first plane, and the phenomenon of slipping between the cycloid cambered surface and the abutting part due to high-speed rotation of the eccentric part is avoided.
In some embodiments of the present invention, the impact member is provided with a movable slot, the abutting portion is provided at one end of the movable slot, and the eccentric portion can enter the movable slot and abut against the abutting portion or be separated from the movable slot and be separated from the abutting portion.
In a preferred embodiment of the present invention, the elastic member is a compression spring, and the impact member is slidably disposed on the mounting seat along a telescopic direction of the compression spring. The moving part drives the impact piece to move along the compression direction of the compression spring to enable the compression spring to store energy, and when the moving part is separated from the impact piece, the impact piece is ejected along the extension direction of the compression spring. In other embodiments, the elastic element may be replaced by a tension spring, the movable element drives the impact element to move along a stretching direction of the tension spring to store energy in the tension spring, and when the movable element is separated from the impact element, the impact element is ejected along a contracting direction of the tension spring. In other some embodiments, the elastic element can also be replaced by a torsion spring, at the moment, the middle part of the torsion spring penetrates through a rotating shaft of a gear, the abutting part is arranged on the gear, a rack meshed with the gear is arranged on the impact element, when the moving element is contacted with the abutting part, the gear rotates and enables the torsion spring to store energy, when the moving element is separated from the abutting part, the torsion spring drives the gear to rotate, the gear drives the rack to extend out, and the impact element is ejected out along with the rack.
In order to guarantee the precision of the sliding motion of the impact piece, the mounting seat is provided with a sliding rail extending towards the direction of the heat transfer film, and the impact piece is connected with a sliding block matched with the sliding rail.
Preferably, the impact piece includes the connecting piece that links to each other with the slider and sets up the impact piece on the connecting piece, the connecting piece is kept away from the one end of impacting the piece and is offered and be used for the location the first counter bore of compression spring's one end, be equipped with the fixed block on the mount pad, be equipped with on the fixed block relative with first counter bore and be used for the location the second counter bore of compression spring's the other end, compression spring is located first counter bore between the second counter bore all the time at concertina movement's in-process, prevents that compression spring from breaking away from.
Preferably, the impact sheet has a transverse strip orthogonal to the direction of the slide rail, and the length of the transverse strip is adapted to the width of the thermal transfer film, so that each position in the width direction of the thermal transfer film can be impacted, and redundant powder can be cleaned more easily.
In order to control the popping stroke of the impact piece and avoid the falling of the compression spring, the mounting seat is provided with an anti-falling limit stop which is abutted against the sliding block to limit the popping distance of the impact piece.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a conventional powder removing apparatus;
FIG. 2 is a schematic structural view of one embodiment of the powder removing device of the present invention;
fig. 3 is a schematic view of the eccentric portion of fig. 1 just in contact with the abutting portion;
FIG. 4 is a schematic view of the eccentric portion of FIG. 3 about to disengage from the abutment;
fig. 5 is a schematic view of the structure of the movable member.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
Referring to fig. 2 to 5, a powder removing apparatus of the present invention includes: a mounting base 1; the impact piece 2 is movably arranged on the mounting seat 1 and can approach or depart from the back surface of the heat transfer film; the ejection assembly 30 is arranged on the mounting base 1, connected with the impact piece 2 and used for driving the impact piece 2 to reciprocate to impact the back of the heat transfer film linearly; the ejection assembly 30 includes an elastic member 31, a movable member 32 and a driving mechanism 33, the elastic member 31 is connected between the mounting base 1 and the impact member 2, the movable member 32 can be linked with the impact member 2 to drive the elastic member 31 to deform and store energy, or separated from the impact member 2 to make the elastic member 31 drive the impact member 2 to pop out towards the back of the thermal transfer film, and the driving mechanism 33 is used for driving the movable member 32 to move periodically to make the movable member 32 and the impact member 2 linked or separated. The powder clearing device with the structure skillfully utilizes the ejection component 30 to drive the impact piece 2 to reciprocate to impact the back of the heat transfer film linearly, the ejection component 30 drives the moving piece 32 to be linked with the impact piece 2 through the driving mechanism 33 and enables the elastic piece 31 to store energy, then the impact piece 2 ejects out of the heat transfer film under the restoring force action of the elastic piece 31 when the moving piece 32 is separated from the impact piece 2, the ejection mode can generate large impact force on the heat transfer film, redundant powder is cleared completely, and the quality stability of a product after heat transfer is ensured.
Referring to fig. 3, as a preferred embodiment of the present invention, the driving mechanism 33 is a rotation driver for driving the movable element 32 to rotate, the movable element 32 includes a rotating shaft portion 321 driven by the rotation driver and an eccentric portion 322 disposed on the rotating shaft portion 321, the impact member 2 is provided with an abutting portion 201 engaged with the eccentric portion 322, and the eccentric portion 322 periodically contacts with or separates from the abutting portion 201 during the rotation process. Referring to fig. 3, when the movable member 32 rotates until the eccentric portion 322 contacts the abutting portion 201, the impact member 2 drives the elastic member 31 to generate elastic potential energy in the process of continuing to rotate, referring to fig. 4, when the movable member 32 rotates until the eccentric portion 322 is separated from the abutting portion 201, the elastic potential energy of the elastic member 31 ejects the impact member 2 towards the back of the thermal transfer film, so that the excessive powder on the thermal transfer film is removed by a large impact force, the powder removing device of the structure has a good removing effect, and the rotational driver can drive the eccentric portion 322 to rapidly contact and separate from the abutting portion 201, so that the powder removing device achieves extremely high powder removing efficiency.
Referring to fig. 2, 4 and 5, as a preferred embodiment of the above technical solution, the eccentric portion 322 includes a cycloid arc 323, and in the process that the movable element 32 is linked with the impact element 2 to deform the elastic element 31 for energy storage, the end with the smaller curvature radius of the cycloid arc 323 and the end with the larger curvature radius of the cycloid arc 323 are sequentially in contact with the abutting portion 201, and in the process that the abutting portion 201 moves along the end with the smaller curvature radius of the cycloid arc 323 toward the end with the larger curvature radius, the amount of deformation of the elastic element 31 by the impact element 2 can be increased, so that the kinetic energy of the impact element 2 in ejection is increased, and the excess powder can be cleaned.
Referring to fig. 5, it is further preferable that a first plane 324 abutting against the contact portion 201 is connected between the end of the cycloid arc 323 with a smaller curvature radius and the rotating shaft portion 321, and the contact portion 201 first contacts with the first plane 324, passes through the first plane 324, and then contacts with the cycloid arc 323, so as to avoid a slip phenomenon between the cycloid arc 323 and the contact portion 201 due to the high-speed rotation of the eccentric portion 322.
Referring to fig. 3, in some embodiments of the present invention, the impact member 2 is provided with a movable slot 202, the abutting portion 201 is provided at one end of the movable slot 202, and the eccentric portion 322 can enter the movable slot 202 and abut against the abutting portion 201 or be separated from the movable slot 202 and be separated from the abutting portion 201.
In a preferred embodiment of the present invention, the elastic member 31 is a compression spring, and the impact member 2 is slidably disposed on the mounting seat 1 along a telescopic direction of the compression spring. The movable member 32 drives the impact member 2 to move along the compression direction of the compression spring to store energy in the compression spring, and when the movable member 32 is separated from the impact member 2, the impact member 2 is ejected along the extension direction of the compression spring. In other embodiments, the elastic element 31 may be replaced by a tension spring, the movable element 32 drives the impact element 2 to move in a stretching direction of the tension spring to charge the tension spring, and when the movable element 32 is separated from the impact element 2, the impact element 2 is ejected in a retracting direction of the tension spring. In other embodiments, the elastic member 31 may also be replaced by a torsion spring, at this time, the middle portion of the torsion spring passes through a rotation axis of a gear, the abutting portion 201 is disposed on the gear, the impact member 2 is provided with a rack engaged with the gear, when the movable member 32 contacts with the abutting portion 201, the gear rotates and enables the torsion spring to store energy, when the movable member 32 is separated from the abutting portion 201, the torsion spring drives the gear to rotate, the gear drives the rack to extend, and the impact member 2 is ejected along with the rack.
In order to ensure the precision of the sliding motion of the impact piece 2, the mounting base 1 is provided with a sliding rail 4 extending towards the direction of the thermal transfer film, and the impact piece 2 is connected with a sliding block 5 matched with the sliding rail 4.
Preferably, the impact member 2 includes a connecting member 21 connected to the slider 5 and an impact piece 22 disposed on the connecting member 21, wherein the movable groove 202 is disposed on the connecting member 21, a first counter bore 211 for positioning one end of the compression spring is disposed at one end of the connecting member 21 away from the impact piece 22, a fixed block is disposed on the mounting base 1, a second counter bore (not shown) opposite to the first counter bore 211 and for positioning the other end of the compression spring is disposed on the fixed block, and the compression spring is always located between the first counter bore 211 and the second counter bore in the process of telescopic movement, so as to prevent the compression spring from being disengaged.
Preferably, the impact piece 22 has a transverse strip orthogonal to the direction of the slide rail 4, and the length of the transverse strip is adapted to the width of the thermal transfer film, so that the impact can be performed at various positions in the width direction of the thermal transfer film, and the excess powder can be removed easily.
In order to control the ejection stroke of the impact piece 2 and avoid the falling of the compression spring, the mounting seat 1 is provided with an anti-falling limit stop 6 which is abutted against the sliding block 5 to limit the ejection distance of the impact piece 2.
The above examples are merely preferred embodiments of the present invention, and other embodiments of the present invention are possible, such as a reasonable combination of the technical solutions described in the examples. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope set forth in the claims of the present application.
Claims (10)
1. A powder removing device, comprising:
a mounting seat (1);
the impact piece (2) is movably arranged on the mounting seat (1) and can approach or depart from the back surface of the heat transfer film;
the ejection assembly (30) is arranged on the mounting seat (1), connected with the impact piece (2) and used for driving the impact piece (2) to impact the back surface of the heat transfer film in a reciprocating linear manner;
the ejection assembly (30) comprises an elastic piece (31), a movable piece (32) and a driving mechanism (33), the elastic piece (31) is connected between the mounting seat (1) and the impact piece (2), the movable piece (32) can be linked with the impact piece (2) to drive the elastic piece (31) to deform and store energy or separate from the impact piece (2) to enable the elastic piece (31) to drive the impact piece (2) to pop up towards the back of the heat transfer film, and the driving mechanism (33) is used for driving the movable piece (32) to move periodically to drive the movable piece (32) to be linked with or separate from the impact piece (2).
2. A powder removing device as defined in claim 1, wherein:
actuating mechanism (33) are for the order the moving part (32) pivoted rotates the driver, moving part (32) include by rotation driver driven pivot portion (321) and set up eccentric portion (322) on pivot portion (321), be equipped with on impact member (2) with eccentric portion (322) matched with butt portion (201), eccentric portion (322) rotate the in-process periodically with butt portion (201) contact or phase separation.
3. A powder removing device as defined in claim 2, wherein:
the eccentric part (322) comprises a cycloid cambered surface (323), the movable part (32) is linked with the impact part (2) to enable the elastic part (31) to deform to store energy, and one end of the cycloid cambered surface (323) with a smaller curvature radius and one end of the cycloid cambered surface (323) with a larger curvature radius are sequentially contacted with the abutting part (201).
4. A powder removing device as defined in claim 3, wherein:
and a first plane (324) which is abutted against the abutting part (201) is connected between one end of the cycloid cambered surface (323) with a smaller curvature radius and the rotating shaft part (321).
5. A powder removing device as defined in claim 2, wherein:
the impact piece (2) is provided with a movable groove (202), the abutting part (201) is arranged at one end of the movable groove (202), and the eccentric part (322) can enter the movable groove (202) and abut against the abutting part (201) or separate from the movable groove (202) to be separated from the abutting part (201).
6. A powder removing device as defined in claim 1, wherein:
the elastic piece (31) is a compression spring, and the impact piece (2) is arranged on the mounting seat (1) in a sliding mode along the expansion direction of the compression spring.
7. A powder removing device as defined in claim 6, wherein:
the mounting seat (1) is provided with a sliding rail (4) extending towards the direction of the heat transfer film, and the impact piece (2) is connected with a sliding block (5) matched with the sliding rail (4).
8. A powder removing device as defined in claim 7, wherein:
impact piece (2) include connecting piece (21) that link to each other with slider (5) and impact piece (22) of setting on connecting piece (21), the one end that strikes piece (22) is kept away from in connecting piece (21) is offered and is used for the location first counter bore (211) of compression spring's one end, be equipped with the fixed block on mount pad (1), be equipped with on the fixed block with first counter bore (211) relative and be used for the location the second counter bore of compression spring's the other end.
9. A powder removing device as defined in claim 8, wherein:
the impact sheet (22) has a transverse strip orthogonal to the direction of the slide rail (4), the length of which is adapted to the width of the thermal transfer film.
10. A powder removing device as defined in claim 6, wherein:
and the mounting seat (1) is provided with an anti-falling limit stop (6) which is abutted against the sliding block (5) to limit the pop-up distance of the impact piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010529082.4A CN111559172B (en) | 2020-06-11 | 2020-06-11 | Powder clearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010529082.4A CN111559172B (en) | 2020-06-11 | 2020-06-11 | Powder clearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111559172A true CN111559172A (en) | 2020-08-21 |
| CN111559172B CN111559172B (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010529082.4A Active CN111559172B (en) | 2020-06-11 | 2020-06-11 | Powder clearing device |
Country Status (1)
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| CN (1) | CN111559172B (en) |
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| Publication number | Publication date |
|---|---|
| CN111559172B (en) | 2024-06-11 |
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