AIRFLOW ORIFICE ADJUSTING DEVICE OF PACKAGE THERMAL-SHRINKING OVEN

Abstract

An airflow orifice adjusting device of a package thermal-shrinking oven includes at least one airflow orifice board mounted to an inside surface of a hot airflow box of the package thermal-shrinking oven and formed with series of airflow orifices, at least one track board mounted to an outside of the hot airflow box and formed with a plurality of track holes, a plurality of adjusting levers, and a plurality of airflow-blocking adjusting plates mounted to the airflow orifice board and each formed with a plurality of adjusting orifices. Each of the airflow orifices of the airflow orifice board discharges a hot airflow. The adjusting levers each have two ends that are respectively formed as a connecting portion and an operating portion. The connecting portion extends through the track holes of the track board to connect to one end of the airflow-blocking adjusting plate, so that a leftward or rightward horizontal moving operation of the operating portion of the adjusting levers causes the airflow-blocking adjusting plate to correspondingly perform a reversely directed horizontal movement in a rightward or leftward direction. The adjusting orifices of the airflow-blocking adjusting plates respectively correspond to the airflow orifices of the airflow orifice board, so that each of the adjusting orifices may completely or partially match with or completely un-match with a corresponding one of the airflow orifices of the airflow orifice board to adjust a discharging flowrate of the hot airflow and discharging of the hot airflow or not.

Claims

1. An airflow orifice adjusting device of a package thermal-shrinking oven, comprising: at least one airflow orifice board, the airflow orifice board being mounted to an inside surface of a hot airflow box of the package thermal-shrinking oven, the airflow orifice board being provided with series of airflow orifices, so that each of the airflow orifice discharges a hot airflow from the hot airflow box of the package thermal-shrinking oven; at least one track board, the track board being mounted to an outside of the hot airflow box, the track board being formed with a plurality of track holes; a plurality of adjusting levers, the adjusting levers each having two ends that are respectively formed as a connecting portion and an operating portion, the connecting portion extending through the track holes of the track board, so that a leftward or rightward horizontal pushing operation performed on the operating portion drives the connecting portion to implement a corresponding reversely-directed movement in a rightward or leftward direction; and a plurality of airflow-blocking adjusting plates, each of the airflow-blocking adjusting plate being mounted on the airflow orifice board, the airflow-blocking adjusting plates being each formed with a plurality of adjusting orifices, such that each of the adjusting orifices corresponds to one of the airflow orifices of the airflow orifice board, the airflow-blocking adjusting plates each having an end connected to the connecting portion of a corresponding one of the adjusting levers to allow the airflow-blocking adjusting plate to be controlled by the leftward or rightward horizontal pushing operation of the operating portion of the adjusting lever to make the airflow-blocking adjusting plate performing reversely directed displacing in a rightward or leftward direction to cause each of the adjusting orifices to completely or partially match with or completely un-match with a corresponding one of the airflow orifices of the airflow orifice board, so that a hot airflow flowrate discharging through each of the airflow orifices of the airflow orifice board, and discharging of the hot airflow or not, is adjustable and controllable.

2. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 1, wherein each of airflow orifices of the airflow orifice board comprises an elongated hole.

3. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 1, wherein the track holes of the track board comprise a horizontal elongated hole.

4. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 1, wherein the track board is provided with a through axle hole, and the through axle hole longitudinally extends across each of the track holes, and the operating portion of each of the adjusting levers is formed with a through aperture, the through aperture corresponding to and matching with the through axle hole of the track board, so that a rotation axle penetrates through the through axle hole of the track board and the through aperture of the operating portion of each of the adjusting levers to allow the rotation axle to function as a support point for the leftward or rightward horizontal pushing operation of the operating portion of each of the adjusting levers.

5. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 1, wherein at least one scale board is mounted to a bottom portion of the track board, and the scale board is provided thereon with a plurality of markings to provide an indication for a displacement of a horizontal leftward or rightward operation of the operating portion at one end of each of the adjusting levers and to serve as an indication of an operation position of each of the airflow orifices of the airflow orifice board for completely or partially matching with or completely un-matching with a corresponding one of the airflow orifices.

6. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 5, wherein the markings of the scale board mounted to the bottom portion of the track board respectively indicate states that the airflow orifices of the airflow orifice board completely discharge a full flowrate of the hot airflow, partially discharge a half flowrate of the hot airflow, and are completely blocked for discharging no hot airflow.

7. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 1, wherein one end of the operating portion of each of the adjusting levers is provided with at least one pivotal connection portion, and the pivotal connection portion is formed with a pivotal connection hole, and an end of the connecting portion of the adjusting levers that is not connected with the corresponding airflow-blocking adjusting plate is formed with at least one joining opening to receive the pivotal connection portion of the operating portion to correspondingly insert therein, and the joining opening having top and bottom that are each formed with a connecting threaded hole to correspond to the pivotal connection hole of the operating portion to receive at least one bolt extending through and fastened to the connecting threaded holes and the pivotal connection hole to function as a center of rotation axle of an interlinked operation between the operating portion and the connecting portion.

8. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 1, wherein the adjusting orifices of the airflow-blocking adjusting plates comprise an elongated hole.

9. The airflow orifice adjusting device of the package thermal-shrinking oven according to claim 1, wherein one end of the connecting portion of each of the adjusting levers is provided with a connecting threaded rod, and one end of the airflow-blocking adjusting plate is formed with a threaded hole, which is corresponding to and fastened to the threaded rod of the connecting portion.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a perspective view showing an airflow orifice adjusting device of a package thermal-shrinking oven according to a first embodiment of the present invention;

[0022] FIG. 2 is an exploded view showing the airflow orifice adjusting device of the package thermal-shrinking oven according to the present invention;

[0023] FIG. 3 is an enlarged view of portion A of FIG. 1, in which a structural arrangement among a track board, adjusting levers, and airflow-blocking adjusting plates is shown;

[0024] FIG. 4 shows a second embodiment of the present invention;

[0025] FIG. 5 is an enlarged view of portion B of FIG. 4, in which a structural arrangement among a track board, a scale board, adjusting levers, and airflow-blocking adjusting plates is shown;

[0026] FIG. 6 is an enlarged view of a portion of a structure for controlling hot airflow discharging, illustrating control for completely matching, partially matching, and completely blocking between airflow orifices of an airflow orifice board and adjusting orifices of the airflow-blocking adjusting board;

[0027] FIG. 7 is a top plan view, in an enlarged form, showing the scale board of FIG. 5;

[0028] FIG. 8 is a schematic view illustrating a first illustrative application of the airflow orifice adjusting device of the package thermal-shrinking oven according to the present invention; and

[0029] FIG. 9 is a schematic view illustrating a second illustrative application of the airflow orifice adjusting device of the package thermal-shrinking oven according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Referring firstly to FIGS. 1, 2, and 3, an airflow orifice adjusting device 100 of a package thermal-shrinking oven according to a first embodiment of the present invention comprises at least one airflow orifice board 10. The airflow orifice board 10 is mounted to an inside surface of a hot airflow box 210 of a package thermal-shrinking oven 200 (as shown in FIG. 7), and the airflow orifice board 10 is provided with series or arrays of airflow orifices 11, so that each of the airflow orifices 11 discharges a hot airflow from the hot airflow box 210 of the package thermal-shrinking oven 20. The airflow orifices 11 are not limited to any specific shape, and an elongated hole is taken as an example for illustration of the airflow orifices 11 in the present invention.

[0031] At least one track board 20 is provided, and the track board 20 is mounted to an outside of the hot airflow box 210. The track board 20 is formed with a plurality of track holes 21, and the track board 20 is provided with a through axle hole 22, such that the through axle hole 22 longitudinally penetrates across each of the track holes 21. The track holes 21 are not limited to any specific shape, and a horizontal elongated hole is taken as an example for illustration in the present invention.

[0032] A plurality of adjusting levers 30 are provided, and each of the adjusting levers 30 has two ends that are respectively formed as a connecting portion 31 and an operating portion 32. The connecting portions 31 extend through the track holes 21 of the track board 20. The connecting portions 31 each have two ends that are respectively provided with a joining opening 311 and a connecting threaded rod 312. The joining opening 311 is defined between a top and a bottom that are each formed with a connecting threaded hole 311A. The operating portion 32 is formed in a middle thereof with a through aperture 321, and the through aperture 321 corresponds to and matches with the through axle hole 22 of the track board 20, so that a rotation axle 321A penetrates through the through axle hole 22 of the track board 20 and the through aperture 321 of the operating portion 32 of each of the adjusting levers 30 to allow the rotation axle 321A to function as a support point for a leftward or rightward horizontal pushing operation of the operating portion 32 of each of the adjusting levers 30 to allow the operating portion 32 to be operated for horizontally pushing leftward or rightward. One end of the operating portion 32 is provided with at least one pivotal connection portion 322, and the pivotal connection portion 322 is formed with a pivotal connection hole 322A. The pivotal connection portion 322 of the operating portion 32 is corresponding to and insertable into the joining opening 311 at one end of the connecting portion 31 to have the pivotal connection hole 322A corresponding to and matching with the connecting threaded holes 311A at the top and the bottom of the joining opening 311 of the connecting portion 31. At least one bolt 322B penetrates through the connecting threaded holes 311A and the pivotal connection hole 322A. The bolt 322B functions as a center of rotation axle of an interlinked operation between the operating portion 32 and the connecting portion 31, so that the connecting portion 31 is driven by the leftward or rightward horizontal pushing operation of the operating portion 32 to make the connecting portion 31 performing a reversely directed horizontal motion in a rightward or leftward direction.

[0033] A plurality of airflow-blocking adjusting plates 40 are provided, and each of the airflow-blocking adjusting plates 40 is mounted on the airflow orifice board 10, and the airflow-blocking adjusting plates 40 are each formed with a plurality of adjusting orifices 41, such that each of the adjusting orifices 41 corresponds to one of the airflow orifices 11 of the airflow orifice board 10. The adjusting orifices 41 are not limited to any specific shape, and an elongated hole is taken as an example for illustration in the present invention. The airflow-blocking adjusting plates 40 are each formed, in one end thereof, with a threaded hole 42, which is corresponding to and connected with the connecting threaded rod 312 at one end of the connecting portion 31 of a corresponding one of the adjusting levers 30 to allow the airflow-blocking adjusting plate 40 to be controlled by the leftward or rightward horizontal pushing operation of the operating portion 32 of the adjusting lever 30 to make the airflow-blocking adjusting plate 40 performing reversely directed displacing in a rightward or leftward direction to cause each of the adjusting orifices 41 to completely or partially match with or completely un-match with a corresponding one of the airflow orifices 11 of the airflow orifice board, so that a hot airflow flowrate discharging through each of the airflow orifices 11 of the airflow orifice board 10, and discharging of the hot airflow or not, can be adjusted and controlled.

[0034] Referring to FIGS. 4, 5, 6, and 7, an airflow orifice adjusting device 100 of a package thermal-shrinking oven is provided according to a second embodiment of the present invention, in which at least one scale board 23 is shown mounted to a bottom portion of the track board 20. The scale board 23 is provided thereon with a plurality of markings 231, 232, and 233 (as shown in FIG. 7) to provide an indication for a displacement of horizontal leftward or rightward operation of the operating portion 32 at one end of each of the adjusting levers 30 and also to serve as an indication of an operation position of each of the adjusting orifices 41 of the airflow-blocking adjusting plates 40 for completely or partially matching with or completely un-matching with a corresponding one of the airflow orifices 11 of the airflow orifice board 10. For example, as an example for illustration of the present invention, the operating portion 32 corresponding to the marking 231 of the scale board 23 indicates an operation position where each of the adjusting orifices 41 of the airflow-blocking adjusting plates 40 is completely matching with a corresponding one of the airflow orifices 11 of the airflow orifice board 10 (as being shown by the location of the third row in FIG. 6), meaning the airflow orifice 11 of the airflow orifice board 10 in a state of completely discharging for a full flowrate of the hot airflow; similarly, for example, the markings 232 and 233 of the scale board 23 respectively indicate operation positions where each of the adjusting orifices 41 of the airflow-blocking adjusting plates 40 is partially matching with and is completely un-matching with a corresponding one of the airflow orifices 11 of the airflow orifice board 10 (as being shown by the second row and the first row in FIG. 6), meaning the airflow orifice 11 of the airflow orifice board 10 in a state of partially discharging for a half flowrate of the hot airflow and a state of being completely blocked for discharging no hot airflow. The above description of adjusting of the discharged amount of hot airflow as indicated by the markings 231, 232 and 233 of the scale board 23 is provided as an illustrative example for operation of the present invention, but is not limited thereto, for example the number of the markings 231, 232 and 233 of the scale board 23 being increased, and the spacing distance among them being shortened, enabling the airflow orifices 11 of the airflow orifice board 10 to provide a more accurate, and, in an extremely situation, stepless control of the discharging flowrate of the hot airflow.

[0035] Referring to FIG. 8, a first illustrative example of application of the airflow orifice adjusting device 100 of the package thermal-shrinking oven according to the present invention is shown, in which a packaged object 300 is shown sleeved, on the outside thereof, with a heat-shrinkable package film 400, and is conveyed by a packaging conveyor belt 500 arranged under the package thermal-shrinking oven 200 into an interior of the package thermal-shrinking oven 200, so that, according to the packaged object 300 and the heat-shrinking packaging property of the heat-shrinkable package film 400, by means of the leftward or rightward horizontal pushing operation performed on the operating portion 32 of each one of the adjusting levers 30, each of the adjusting orifices 41 of the airflow-blocking adjusting plate 40 that corresponds to said each one of the adjusting levers 30 is caused to completely or partially match with or completely un-match with the airflow orifice board 10, in order to do adjustment for controlling a heat-shrinking packaging site and a hot airflow flowrate and discharging of a hot airflow or not to an optimum state, to thereby set the heat-shrinking packaging quality of the packaged object 300 as being packaged by the heat-shrinkable package film 400 to the optimum state. If the shape or size of the packaged object 300 changes or a heat-shrinkable package film 400 having a different heat-shrinking packaging property is applied (not illustrated), there is no need to shut down the package thermal-shrinking oven 200 and it only needs to horizontally push the operating portion 32 of each of the adjusting levers 30 in a leftward or rightward direction to allow the heat-shrinking packaging operation to be continuously performed according to the different shape or size of the packaged object 300 or the different heat-shrinking packaging property of Z the heat-shrinkable package film 400.

[0036] Further referring to FIG. 9, a second illustrative example of application of the airflow orifice adjusting device 100 of the package thermal-shrinking oven according to the present invention is shown, in which a state of being applied to a small-sized package thermal-shrinking oven 200 is provided, wherein the airflow orifice board 10, the track board 20, the adjusting levers 30, and the airflow-blocking adjusting plates 40 are cut by half in respect of size or quantity, such that the adjusting levers 30 are arranged in a one-side operating mode that is applicable to a field or on-site heat-shrinking packaging operation for a temporary custom-made small-sized packaged object 300.

[0037] The airflow orifice adjusting device 100 of the package thermal-shrinking oven according to the present invention is shown in FIGS. 1-9, wherein the description and drawings are provided for easy explanation of the technical contents and technical measures of the present invention, and the preferred embodiments so described provide only a fraction of the present invention and are not intended for constraining the scope thereof, and further any equivalent substitute and modification of structure and component of the details of the present invention are considered failing within the scope of the present invention as defined solely by the appended claims.