Oven that prevents wrinkles on thin substrates

Abstract

This application discloses an oven that prevents wrinkles in thin carriers. The oven includes a body, at least one fan, at least one set of heat generators, and a support plate. The body has a feed end and a discharge end. The body forms an installation cavity between the feed end and the discharge end, and also forms a set of air outlets communicating with the installation cavity between the feed end and the discharge end. The fan is disposed in the installation cavity near the feed end, and the heat generator is also disposed in the installation cavity and located in the flow path of the airflow generated by the fan. The support plate is disposed above the air outlets and forms an arc surface on one side facing the air outlets, and an anti-wrinkle structure is provided on the arc surface.

Description

Technical Field

[0001] This invention relates to the field of printing machinery and equipment, and more particularly to an oven that can prevent wrinkles on thin carriers. Background Technology

[0002] Currently, printing is done on thin substrates such as paper and fabric using printing equipment to create various aesthetically pleasing patterns or images. Printing methods are divided into inkjet printing and inkjet printing. Inkjet printing requires spraying ink onto the thin substrate according to a pre-set trajectory.

[0003] To prevent ink from contaminating the markings on the thin substrate by contact with other objects before drying, a drying process is usually added after printing. Currently, the most common drying device is an oven. Existing ovens can indeed dry ink on thin substrates to a certain extent. However, existing ovens also have many drawbacks.

[0004] Firstly, existing ovens typically use fans to direct hot air from heating elements onto the ink-printed side of the thin substrate during drying. However, as the substrate shrinks due to heat during the drying process, wrinkles of varying degrees easily appear. This causes the originally uniform image on the substrate to become misaligned due to the wrinkles, thus affecting the quality of the final printed image.

[0005] Furthermore, existing ovens experience extremely uneven air pressure along the extension direction of the thin carrier when drying it, resulting in severe shaking of the thin carrier.

[0006] More importantly, some ovens have multiple fans. When multiple fans are blowing air, the thin substrate between the two fans will inevitably vibrate violently. As a result, the undried ink on the substrate will shift significantly, affecting the quality and yield of the final product. Summary of the Invention

[0007] One advantage of the present invention is that it provides an oven that can prevent thin carrier wrinkles, wherein the oven can reduce the degree of wrinkling of thin carriers when they are heated and dried, especially the degree of paper wrinkling.

[0008] Another advantage of the present invention is that it provides an oven that can prevent thin carriers from wrinkling, wherein the oven can achieve hot air recycling without the need for two fans blowing air in opposite directions.

[0009] Another advantage of the present invention is that it provides an oven that prevents thin-carrier wrinkles, wherein the oven that prevents thin-carrier wrinkles can reduce the energy consumption of the oven.

[0010] Another advantage of the present invention is that it provides an oven that prevents thin carriers from wrinkling, wherein the oven that prevents thin carriers from wrinkling can prevent the thin carriers from shaking violently.

[0011] Another advantage of the present invention is that it provides an oven that prevents thin carrier wrinkles, wherein the oven requires minimal modification to the existing oven structure, thereby reducing the cost of modification.

[0012] Another advantage of the present invention is that it provides an oven that prevents thin carrier wrinkles, wherein the oven prevents air pressure disturbances caused by a single fan, thereby effectively reducing the amplitude of shaking of the thin carrier when it is dried in the oven.

[0013] Another advantage of the present invention is that it provides an oven that can prevent thin carrier wrinkles. Since the oven can be equipped with a fan to achieve hot air circulation, the oven can achieve heat circulation while relatively reducing the volume and weight of the oven.

[0014] To achieve at least one of the above advantages of the present invention, the present invention provides an oven that prevents wrinkles in thin carriers, the oven comprising:

[0015] A housing, wherein the housing has a feed end and a discharge end; the housing forms a mounting cavity between the feed end and the discharge end, and the housing also forms a set of air outlets communicating with the mounting cavity between the feed end and the discharge end; the distance from the feed end to the discharge end is defined as a transverse direction;

[0016] At least one fan, said fan being disposed in the mounting cavity of the housing near the feed end; and

[0017] At least one set of heat generators is also disposed in the mounting cavity and located in the flow path of the flowing air formed by the fan;

[0018] A support plate, wherein the support plate is disposed above the air outlet and forms an arc surface on one side facing the air outlet, and an anti-wrinkle structure is provided on the arc surface.

[0019] According to one embodiment of the present invention, the anti-wrinkle structure includes at least one pair of ribs, wherein the pair of ribs are symmetrically arranged on the arc surface along the transverse direction, and the distance between the ends of two of the ribs near the feed end is smaller than the distance between the ends near the discharge end.

[0020] According to one embodiment of the present invention, the anti-wrinkle structure includes a plurality of pairs of ribs, wherein one of the ribs in each pair is arranged at intervals along the longitudinal direction on one side of the arc surface along the longitudinal direction, and the other rib is arranged at intervals along the longitudinal direction on the other side of the arc surface along the longitudinal direction.

[0021] According to one embodiment of the present invention, the housing further forms a return air channel separated from the mounting cavity and at least one return air hole communicating with the return air channel; the distance from the feed end to the discharge end is defined as a transverse direction, and the housing of the oven that can prevent thin carrier wrinkles forms at least one return air hole at both ends in a longitudinal direction perpendicular to the transverse direction; the return air channel is connected to the air inlet of the fan near the feed end.

[0022] According to one embodiment of the present invention, the diameter of the return air hole gradually decreases from the discharge end to the feed end.

[0023] According to one embodiment of the present invention, the distance between two adjacent return air holes gradually decreases from the discharge end to the feed end.

[0024] According to one embodiment of the present invention, the housing has a main body and an air outlet plate, wherein the main body forms the mounting cavity, the air outlet plate forms the air outlet, and the air outlet plate covers the mounting cavity. The housing further includes at least one partition, wherein the partition is disposed in the mounting cavity to divide the mounting cavity into a first mounting cavity and a second mounting cavity, and a communicating channel is formed between the partition and the air outlet plate, so that the first mounting cavity and the second mounting cavity can communicate through the communicating channel.

[0025] According to one embodiment of the present invention, the housing further includes a return air plate, wherein the return air plate is disposed at the discharge end, and the return air plate is disposed inclined toward the feed end and extends along the longitudinal direction.

[0026] According to one embodiment of the present invention, the oven that prevents thin carrier wrinkles includes a plurality of said heat generators, wherein the plurality of said heat generators are arranged at intervals along said transverse direction.

[0027] According to one embodiment of the present invention, a plurality of said heat generators are arranged at equal intervals along said transverse direction. Attached Figure Description

[0028] Figure 1 A perspective view of the oven for preventing wrinkles in thin carriers according to the present invention is shown.

[0029] Figure 2 An exploded view of the oven for preventing wrinkles in thin carriers according to the present invention is shown.

[0030] Figure 3 A top view of the oven for preventing wrinkles in thin carriers according to the present invention is shown.

[0031] Figure 4 The oven described in this invention, which prevents thin carriers from wrinkling, is shown. Figure 3 A cross-sectional view along the AA direction.

[0032] Figure 5 A schematic diagram of the oven for preventing wrinkles of thin carriers according to the present invention is shown in one working state.

[0033] Figure 6 A top view of the oven section structure that prevents thin carrier wrinkles as described in this invention is shown.

[0034] Figure 7 The oven section structure for preventing wrinkles in thin carriers as described in this invention is shown. Figure 6 A cross-sectional view along the BB direction.

[0035] Figure 8 A cross-sectional view of the support plate of the oven that prevents thin carrier wrinkles according to a preferred embodiment of the present invention is shown.

[0036] Figure 9 The present invention is shown. Figure 6 A bottom view of the support plate of the oven that prevents thin carrier wrinkles according to a preferred embodiment. Detailed Implementation

[0037] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0038] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0039] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0040] refer to Figures 1 to 9 A preferred embodiment of the present invention, an oven capable of preventing wrinkles in thin carriers, will be described in detail below. This oven is capable of drying thin carriers and can circulate hot air. Those skilled in the art will understand that the thin carrier can be paper, canvas, etc., and the present invention is not limited thereto.

[0041] Specifically, the oven that prevents thin carriers from wrinkling includes a box body 10, wherein the box body 10 has a feed end 101 and a discharge end 102, wherein the thin carrier can move from the feed end 101 toward the discharge end 102.

[0042] The housing 10 forms an installation cavity 103 between the feed end 101 and the discharge end 102, and the housing 10 also forms a set of air outlets 104 communicating with the installation cavity 103 at the top of the installation cavity 103 between the feed end 101 and the discharge end 102.

[0043] Preferably, the air outlet 104 is oriented obliquely toward the discharge end 102 to prevent the air from the air outlet 104 from blowing vertically toward the thin carrier and causing the thin carrier to be subjected to excessive pressure.

[0044] Preferably, the distance from the feed end 101 to the discharge end 102 is defined as a transverse direction, wherein each of the air outlets 104 is provided to extend along a longitudinal direction perpendicular to the transverse direction, so that the hot air generated by the anti-wrinkle oven can cover the entire longitudinal width of the thin carrier. That is, the air outlet 104 is a long and narrow opening extending along the longitudinal direction.

[0045] Preferably, the housing 10 forms a plurality of air outlets 104, wherein the plurality of air outlets 104 are arranged at intervals along the transverse direction to increase the area of ​​the thin carrier that the anti-wrinkle oven can dry. More preferably, the plurality of air outlets 104 are arranged at equal intervals along the transverse direction.

[0046] Specifically, the housing 10 has a housing body 11 and an air outlet 12, wherein the mounting cavity 103 is formed at the top of the housing body 11, and the air outlet 12 covers the top of the mounting cavity 103 and forms the air outlet 104.

[0047] The oven for preventing wrinkles in thin carriers includes at least one set of heat generators 20 and at least one fan 30. The fan 30 is disposed in the mounting cavity 103 of the housing 10 near the feed end 101. The heat generators 20 are also disposed in the mounting cavity 103 and are located in the flow path of the airflow generated by the fan 30.

[0048] The fan 30 is configured to guide air from the feed end 101 to the discharge end 102. During the process of the air being guided from the feed end 101 to the discharge end 102 by the fan 30, the air is heated by the heat generator 20, and the hot air can be discharged through the air outlet 104. Therefore, the hot air formed after being heated by the heat generator 20 can flow out from the air outlet 104. The outflowing hot air can dry the ink on the thin carrier opposite to the air outlet 104. Preferably, the fan 30 is positioned close to the feed section 101.

[0049] Preferably, the anti-wrinkle oven includes a plurality of heat generators 20, wherein the plurality of heat generators 20 are arranged at intervals along the transverse direction, preferably at equal intervals. In this way, the thin carrier opposite the air outlet 104 can be dried uniformly.

[0050] It is worth mentioning that, preferably, on at least one side of the oven body 10 of the oven capable of preventing wrinkles of thin carriers, at least one return air channel 105 separated from the mounting cavity 103 and a set of return air holes 106 communicating with the return air channel 105 are formed, wherein the return air holes 106 are disposed at the top of the return air channel 105, and the set of return air holes 106 are spaced apart along the transverse direction. At the same time, the return air channel 105 is connected to the air inlet of the fan 30 near the feed end 101.

[0051] Preferably, on each of the two sides of the oven body 10 of the anti-wrinkle oven located longitudinally in the mounting cavity 103, at least one return air channel 105 separated from the mounting cavity 103 and a set of return air holes 106 communicating with the return air channel 105 are formed. In this way, when hot air is discharged from the air outlet 104, due to the continuous discharge of air from the mounting cavity 103 by the fan 30 located near the feed end 101, the hot air that has been utilized can flow back from the return air holes 106 on both sides of the thin carrier to the return air channel 105 under the negative pressure created by the fan 30 at the feed end 101, and continuously flow towards the air inlet of the fan 30.

[0052] This cycle allows for the effective recycling and utilization of hot air.

[0053] Preferably, the housing 10 further includes at least one partition 13, wherein the partition 13 is disposed in the mounting cavity 103 to divide the mounting cavity 103 into a first mounting cavity 1031 and a second mounting cavity 1032, and a communication channel 108 is formed between the partition 13 and the air outlet plate 12 so that the first mounting cavity 1031 and the second mounting cavity 1032 can be connected through the communication channel 108.

[0054] The fan 30 is installed in the first mounting cavity 1031. In a preferred embodiment, a plurality of the heat generators 20 are spaced apart in the second mounting cavity 1032. Preferably, the connecting channel 108 is provided on both sides of the longitudinal direction, so that more of the hot air returning from the return air hole 106 can be guided by the fan 30 to the second mounting cavity 1032 via the connecting channel 108.

[0055] Those skilled in the art will understand that, through this arrangement, the oven that prevents thin carrier wrinkles can achieve hot air recycling without the need for two opposing blowers.

[0056] More preferably, the housing 10 further includes a return air plate 14, wherein the return air plate 14 is disposed at the discharge end 102, and the return air plate 14 is arranged to extend upward and be inclined toward the feed end 101. At the same time, the housing 10, i.e., the air outlet plate 12, forms a return air inlet 109 between the return air plate 14 and the feed end 101, and near the return air plate 14.

[0057] Preferably, both the return air inlet 109 and the return air plate 14 are arranged to extend along the longitudinal direction. In this way, when hot air is directed from the outlet 104 by the fan 30 to the discharge end 102, a portion of the hot air is blocked by the return air plate 14 and flows back from the return air inlet 109 to the mounting cavity 103. In a preferred embodiment, the return air channel 105 communicates with the mounting cavity 103 near the discharge end 102, wherein the return air inlet 109 communicates with the return air channel 105. In this way, the hot air returning from the return air inlet 109 can also flow to the air inlet of the fan 30 through the return air channel 105.

[0058] Preferably, in one embodiment, the diameter of the return air hole 106 gradually decreases from the discharge end 102 to the feed end 101. This reduces the amount of hot air drawn from the air outlet 104 and returned through the return air hole 106 when the fan 30 is operating. This not only ensures that the thin carrier near the fan 30 is dried with sufficient hot air, but also allows for the recirculation of the hot air.

[0059] In another embodiment, the distance between two adjacent return air holes 106 gradually decreases from the discharge end 102 to the feed end 101. This reduces interference from the return air holes 106 near the fan 30 when the fan 30 is operating.

[0060] More preferably, the housing 10 further includes a support plate 15, wherein the two sides of the support plate 15 are installed on the longitudinal sides of the housing 10, and form a material channel 109 between the support plate 15 and the air outlet plate 12 for the thin carrier to pass through.

[0061] The support plate 15 is positioned above the air outlet 104 formed by the housing 10, thereby preventing heat loss. Those skilled in the art will understand that, since the support plate 15 and the return air plate 14 are respectively positioned around the air outlet 104, and simultaneously, the fan 30 continuously guides hot air to flow along the direction from the feed end 101 to the discharge end 102, and then returns through the return air hole 106, this cycle allows for efficient use of hot air to dry the thin carrier.

[0062] More preferably, the support plate 15 has an arc surface 1501 on the side facing the air outlet 104, which abuts against the side of the ink being printed on the thin carrier. Furthermore, an anti-wrinkle structure 40 is provided on the arc surface 1501.

[0063] In one embodiment, the anti-wrinkle structure 40 includes at least one pair of ribs 41, wherein the pair of ribs 41 are symmetrically arranged on the arc surface 1501 along the transverse direction, and the distance between the ends of two of the ribs 41 near the feed end 101 is less than the distance between the ends near the discharge end 102.

[0064] With this configuration, while the thin carrier is being dried in the anti-wrinkle oven, the anti-wrinkle structure 40 applies a force that causes the thin carrier to expand longitudinally as it is pressed against the anti-wrinkle structure 40. It is well known that thin carriers, especially paper or film, tend to shrink inwards when heated during drying. By providing the anti-wrinkle structure 40, the outward force applied by the anti-wrinkle structure 40 during drying effectively reduces the degree of inward shrinkage of the thin carrier.

[0065] Preferably, the anti-wrinkle structure 40 includes multiple pairs of ribs 41. In each pair of ribs 41, one rib 41 is spaced apart along the longitudinal direction on one side of the arcuate surface 1501 along the longitudinal direction, while the other rib 41 is spaced apart along the longitudinal direction on the other side of the arcuate surface 1501 along the longitudinal direction. In this way, the spacing between the pairs of ribs 41 closer to the longitudinal side of the arcuate surface 1501 is larger.

[0066] More preferably, multiple pairs of the anti-wrinkle structures 40 are also provided along the said lateral direction.

[0067] Those skilled in the art will understand that this method can effectively reduce the degree of deformation of the thin carrier due to drying.

[0068] It is worth mentioning that the cross-sectional dimension of the mounting cavity 103 in the vertical direction gradually decreases from the position where the fan 30 is installed to the outlet 103 along the direction from the feed end 101 to the outlet 103. Those skilled in the art will understand that since the amount of gas in the mounting cavity 103 of the fan increases closer to the fan 30 and decreases further away from the fan 30, by gradually decreasing the cross-sectional dimension of the mounting cavity 103 in the vertical direction along the direction from the feed end 101 to the outlet 103, the consistency of the gas pressure within the mounting cavity 103 along the direction from the feed end 101 to the outlet 103 can be maintained as much as possible. In this way, the force of the hot air blown out from the air outlet 104 can be kept as consistent as possible, thereby effectively reducing the vibration of the thin carrier.

[0069] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. An oven that prevents wrinkles on thin substrates, characterized in that, The oven that prevents thin carriers from wrinkling includes: A housing, wherein the housing has a feed end and a discharge end; the housing forms a mounting cavity between the feed end and the discharge end, and the housing also forms a set of air outlets communicating with the mounting cavity between the feed end and the discharge end; the distance from the feed end to the discharge end is defined as a transverse direction; The enclosure has a main body and an air outlet plate, wherein the main body forms the mounting cavity, the air outlet plate forms the air outlet, and the air outlet plate covers the mounting cavity; the enclosure further includes at least one partition, wherein the partition is disposed on the main body to divide the mounting cavity into a first mounting cavity and a second mounting cavity, and a communication channel is formed between the partition and the air outlet plate, the first mounting cavity and the second mounting cavity being connected through the communication channel; At least one fan, said fan being disposed in the mounting cavity of the housing near the feed end; and At least one set of heat generators is also disposed in the mounting cavity and located in the flow path of the flowing air formed by the fan; A support plate, wherein the support plate is disposed above the air outlet and forms an arc surface on one side facing the air outlet, and an anti-wrinkle structure is provided on the arc surface; On at least one of the two sides located in the longitudinal direction of the mounting cavity, at least one return air channel separated from the mounting cavity and a set of return air holes communicating with the return air channel are formed on the housing, wherein the return air holes are disposed at the top of the return air channel, and the set of return air holes are spaced apart along the transverse direction, and the return air channel is connected to the air inlet of the blower near the feed end. The return air duct is connected to the mounting cavity near the discharge end; The anti-wrinkle structure includes at least one pair of ribs, wherein the pair of ribs are symmetrically arranged on the arc surface along the transverse direction, and the distance between the ends of two of the ribs near the feed end is smaller than the distance between the ends near the discharge end.

2. The drying oven for preventing wrinkles on thin carriers according to claim 1, characterized in that, The anti-wrinkle structure includes multiple pairs of ribs, wherein one of the ribs in each pair is arranged at intervals along the longitudinal direction on one side of the arc surface along the longitudinal direction, and the other rib is arranged at intervals along the longitudinal direction on the other side of the arc surface along the longitudinal direction.

3. The drying oven for preventing wrinkles on thin carriers according to claim 1, characterized in that, The diameter of the return air hole gradually decreases from the discharge end to the feed end.

4. The drying oven for preventing wrinkles on thin carriers according to claim 1, characterized in that, The distance between two adjacent return air holes gradually decreases from the discharge end to the feed end.

5. The drying oven for preventing wrinkles on thin carriers according to claim 3 or 4, characterized in that, The housing also includes a return air plate, wherein the return air plate is disposed at the discharge end and is inclined toward the feed end, extending along the longitudinal direction.

6. The drying oven for preventing wrinkles on thin carriers according to claim 5, characterized in that, The oven that prevents thin carrier wrinkles includes a plurality of heat generators, wherein the plurality of heat generators are arranged at intervals along the transverse direction.

7. The drying oven for preventing wrinkles on thin carriers according to claim 6, characterized in that, Multiple heat generators are arranged at equal intervals along the lateral direction.

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