Hot air oven with adjustable air knife

Abstract

A hot air oven with an adjustable air knife comprises an oven body, an air inlet pipe, an air outlet pipe and a plurality of screws, the air inlet pipe and the air outlet pipe are both arranged at the front end of the oven body, and the hot air oven is characterized in that the oven body is provided with a middle partition plate, the middle partition plate is provided with a plurality of air outlet grooves, and screw holes are formed in the left side wall and the right side wall of each air outlet groove; air outlet grooves are formed in the air inlet and the air outlet, an air knife is arranged right above each air outlet groove, each air knife comprises two air guide sheets which are oppositely arranged left and right, each air guide sheet is provided with a long-strip-shaped mounting groove, and the screws penetrate through the mounting grooves and are in threaded connection with the screw holes, so that air nozzles with different sizes can be obtained according to different fixing positions of the air knife mounting grooves and the screws; therefore, the strength of air blown out by the air nozzle is adjusted, product operation is easy, the damage rate of products is reduced, and the drying and curing efficiency of printed materials is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment field especially a hot -air oven with adjustable air knife. BACKGROUND

[0002] With the development of society and the progress of social life, the printing industry is developing and growing, the market competition is more and more fierce, the printing cost is rising day by day, and the customer's requirement to quality and speed is also higher and higher, therefore, the manufacturer needs to improve the production efficiency of product and guarantee product quality to ensure the continuous growth of future business volume, in the link of ink drying of the printed matter, the drying efficiency of ink needs to be ensured to be fast and the effect is good.

[0003] The device for ink drying in the printing industry usually adopts hot air drying mode, the existing hot air oven drying system such as the hot air oven drying system special for plastic water-based ink printing disclosed by Chinese utility model CN207736952U has top end air nozzle and bottom end air nozzle fixed in the drying box, the top end air nozzle blows hot air to the printed matter at 90 degrees, the bottom end air nozzle blows hot air to the printed matter obliquely upward at 80 degrees, in this way, the printed matter above the curing air nozzle is dried, however, due to the different water-oil ratio of ink on different printed matters, the flowability of ink is different, the ink with large flowability is prone to being blown away by the strong wind blown by the air nozzle during the drying and curing process, resulting in that the ink of the printed matter is blurred, and the existing hot air oven can only adjust the strength of the wind blown by the air nozzle by controlling the air inlet amount, in this way, it is easy to cause mistakes during operation, and the drying and curing efficiency of the printed matter is greatly reduced. SUMMARY

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to design a hot air oven with adjustable air knife, according to the different positions of the mounting groove and screw fixation of the air knife, different sizes of air nozzles are obtained, so that the strength of the wind blown by the air nozzle is adjusted, the operation of the product is simple, not only the damage rate of the product is reduced, but also the drying and curing efficiency of the printed matter is improved.

[0005] In order to achieve the above purpose, the utility model provides a hot air oven with adjustable air knife, which comprises a box body, an air inlet pipe, an air outlet pipe and a plurality of screws, the air inlet pipe and the air outlet pipe are arranged at the front end of the box body, the box body is provided with a partition plate, the partition plate is provided with a plurality of air outlet grooves, and the left and right side walls of each air outlet groove are provided with screw holes, an air knife is arranged above each air outlet groove, the air knife comprises two left and right arranged air guide plates, the air guide plate is provided with an elongated mounting groove, and the screw passes through the mounting groove and is screwed with the screw hole.

[0006] Further, it further comprises a box cover covering the box body, and the left and right sides of the box cover are provided with grooves.

[0007] Further, the air guide pieces are provided with air guide portions and mounting portions, the air guide portions are located directly above the mounting portions, the distance between the air guide portions of the two air guide pieces gradually increases from bottom to top, and the distance between the mounting portions of the two air guide pieces gradually decreases from bottom to top.

[0008] Further, the middle partition plate is provided with air guide grooves on the left and right sides.

[0009] Further, the middle partition plate and the box cover enclose a drying chamber, the middle partition plate and the bottom of the box body enclose an air chamber, the air inlet pipe and the air outlet pipe are in communication with the air chamber, and the drying chamber and the air chamber are in communication through the air guide grooves.

[0010] Further, the air guide grooves are narrow in front and wide in back, and the opening width gradually increases from front to back.

[0011] Further, the air chamber is provided with two partitions, the two partitions divide the air chamber into an air inlet chamber and two left and right air outlet chambers, the air inlet pipe is in communication with the front end of the air inlet chamber, and the two air outlet pipes are in communication with the front ends of the two air outlet chambers, respectively.

[0012] Further, the air inlet chamber is provided with an inclined plate which is inclined upward from front to back, and the front end of the inclined plate is located below the air inlet pipe.

[0013] Further, the included angle between the air guide portions of the two air guide pieces is 60-120°.

[0014] Further, the hot air oven further comprises a handle, the handle is fixed to the rear end of the box cover, the front end of the box cover is hinged to the box body, and the rear end of the box cover is connected to the rear end of the box body through a buckle.

[0015] After the above technical scheme is adopted, the beneficial effects are:

[0016] The air knife on the middle partition plate is designed as two independent air guide pieces, the mounting portion of the air guide piece is provided with a mounting groove, different sizes of air nozzles are obtained according to the positions of the mounting groove and the screw fixing, the strength of the air blown out by the air nozzle is adjusted, the operation of the product is simple, the damage rate of the product is reduced, and the drying and curing efficiency of the printing substrate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a product schematic view of the hot air oven;

[0018] Figure 2 It is a structure schematic view of the air guide piece of the hot air oven;

[0019] Figure 3The utility model relates to the front view of hot -blast oven's section view of the utility model,

[0020] Figure 4 The utility model relates to the right view of hot -blast oven's section view of the utility model,

[0021] Figure 5 The utility model relates to the hot -blast oven's middle bulkhead structure schematic view of the utility model,

[0022] The figure mark is: 1, the box body, 2, the box cover, 3, the air inlet pipe, 4, the air outlet pipe, 5, the middle bulkhead, 6, the drying chamber, 7, the air chamber, 8, the inclined plate, 9, the handle, 10, the installation slot, 51, the air knife, 52, the air guide slot, 53, the air outlet slot, 71, the air inlet chamber, 72, the air outlet chamber, 511, the air guide part, 512, the installation part, DETAILED DESCRIPTION

[0023] The utility model discloses further describe the technical scheme through the following examples: obviously, the described example is only a part of the utility model embodiment, not all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0024] As Figures 1-4 The utility model provides a kind of hot -blast oven with adjustable air knife, including box body 1, the box cover 2 that is covered on box body 1, air inlet pipe 3, air outlet pipe 4 and multiple screws, air inlet pipe 3 and air outlet pipe 4 are all located in the front end of box body 1, box cover 2 left and right sides are all provided with the slot for horizontally placing the dry printing material to be dried, box body 1 is equipped with middle bulkhead 5, middle bulkhead 5 is equipped with several air outlet slots 53, and the left and right side walls of air outlet slot 53 are provided with screw hole, each air outlet slot 53 is provided with air knife 51 above, air knife 51 includes two pieces of left and right arrangement air deflector, air deflector is provided with long strip-shaped installation slot 10, screw passes through installation slot 10 and is screwed with screw hole.The size of installation slot 10 in left and right direction is greater than the screw rod diameter of screw, the size of installation slot 10 in front and back direction is less than the screw head diameter of screw.In the embodiment, when screw is fixed in the lower end of installation slot 10, the distance between two air deflectors is minimum, the air nozzle also reaches minimum size at this time, so that the strength of the wind blown by air outlet slot 53 reaches maximum, suitable for the drying of small fluidity ink, shorten drying time;Screw is fixed in the upper end of installation slot 10, the distance between two air deflectors is farthest, the air nozzle also reaches maximum size at this time, so that the air outlet intensity of air outlet slot 53 is lowest, suitable for the drying of large fluidity ink, ensure that good drying solidification effect can be achieved.

[0025] The air guide sheet is provided with an air guide part 511 and a mounting part 512, the air guide part 511 is located directly above the mounting part 512, the distance between the air guide parts 511 of the two air guide sheets gradually increases from bottom to top, and the distance between the mounting parts 512 of the two air guide sheets gradually decreases from bottom to top. Since the distance between the mounting parts 512 of the two air guide sheets gradually decreases from bottom to top, the hot air can be guided to the air outlet groove 53; since the distance between the air guide parts 511 of the two air guide sheets gradually increases from bottom to top, the hot air can be diffused to the product surface.

[0026] As a preferred scheme, the included angle between the two air guide parts 511 of the two air guide sheets is 60°-120°. When the angle is 120°, the air distribution range of the air knife 51 is wider and the intensity is moderate, which can be suitable for drying ink with high water content; when the angle is 60°, the air blown by the air knife 51 is more concentrated and the intensity is greater, which can be suitable for rapid drying of ink with low water content.

[0027] The middle partition plate 5 divides the hot air oven into two parts, the upper part is a drying chamber 6 enclosed by the middle partition plate 5 and the cover 2, and the lower part is an air chamber 7 enclosed by the middle partition plate 5 and the bottom of the box body 1. Two partitions are arranged in the air chamber 7, which divides the air chamber 7 into an air inlet chamber 71 and two left and right air outlet chambers 72. The air inlet pipe 3 is in communication with the front end of the air inlet chamber 71, and the two air outlet pipes 4 are in communication with the front ends of the two air outlet chambers 72. The left and right sides of the middle partition plate 5 are each provided with an air guide groove 52, and the drying chamber 6 and the air chamber 7 are communicated through the air guide groove 52. The two air outlet pipes 4 and the air inlet pipe 3 are arranged on the same side, which facilitates the user to connect the air supply device with the external pipe, reduces the occupied area of the product, and is beneficial to the rational use of the factory area.

[0028] Preferably, as shown in Figure 5 The air guide groove 52 has a structure of being narrow in front and wide at back, and the opening width of the air guide groove 52 gradually increases from front to back. When the hot air oven is working, a large amount of hot air is transported into the air inlet chamber 71 through the air inlet pipe 3, and then gathered in the drying chamber 6 through the air knife 51. At this time, the air pressure in the front end of the drying chamber 6 is greater than that in the rear end, forcing the hot air to flow more quickly from the rear end of the opening to the air outlet chamber 72 below to be sucked out, effectively stabilizing the temperature in the box body 1, preventing the problem of easy scalding of the printing material due to too high temperature of the box body 1, and also enhancing the drying effect of the printing material.

[0029] In the embodiment, the hot air oven further comprises a handle 9, the handle 9 is fixed at the rear end of the cover 2, the front end of the cover 2 is hinged to the box body 1, and the rear end of the cover 2 is connected to the rear end of the box body 1 through a buckle.

[0030] Preferably, an inclined plate 8 is arranged in the air inlet chamber 71 and is inclined from front to back and upward, and the front end of the inclined plate 8 is located below the air inlet pipe 3. The hot air enters the air inlet chamber 71 through the air inlet pipe 3, is collected above the inclined plate 8, and flows into the drying chamber 6 through the air knife 51 above. The inclined plate 8 divides the air inlet chamber 71 into two spaces, which is beneficial to increase the pressure of the hot air, so that the hot air blown by the air knife 51 has a greater intensity.

[0031] The air inlet pipe 3 of the hot air oven is connected to an external electric heating air supply system, and the air outlet pipe 4 is connected to an external air blower to suck the hot air into the box 1.

[0032] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the scope of the present application.

Claims

1. A hot-air oven with an adjustable air knife, comprising a cabinet, an air inlet pipe and an air outlet pipe, both of which are arranged at the front end of the cabinet, and a plurality of screws, characterized in that, The box is provided with a partition plate, the partition plate is provided with a plurality of air outlet grooves, and the left and right side walls of each air outlet groove are provided with screw holes, and a air knife is arranged above each air outlet groove, the air knife comprises two air guide plates arranged opposite to each other, the air guide plates are provided with long strip-shaped mounting grooves, and the screws pass through the mounting grooves and are screwed with the screw holes.

2. A hot-air oven with an adjustable air-knife according to claim 1, characterized in that Further comprising a box cover covering the box, the box cover is provided with a slot on the left and right sides.

3. The hot-air oven with an adjustable air-knife according to claim 1, characterized in that, The air guide plates are provided with air guide parts and mounting parts, the air guide parts are located above the mounting parts, the distance between the air guide parts of the two air guide plates gradually increases from bottom to top, and the distance between the mounting parts of the two air guide plates gradually decreases from bottom to top.

4. The heat oven with an adjustable air knife according to claim 2, wherein, The left and right sides of the partition plate are provided with air guide grooves.

5. A hot-air oven with an adjustable air-knife according to claim 4, characterized in that The partition plate and the box cover form a drying chamber, the partition plate and the bottom of the box form an air chamber, the air inlet pipe and the air outlet pipe are in communication with the air chamber, and the drying chamber and the air chamber are in communication through the air guide grooves.

6. A heat oven with an adjustable air knife as claimed in claim 4, characterized in that The air guide groove is narrow in front and wide in back, and the opening width gradually increases from front to back.

7. A heat oven with an adjustable air knife as claimed in claim 5, characterized in that Two partitions are arranged in the air chamber, and the two partitions divide the air chamber into an air inlet chamber and two air outlet chambers, the air inlet pipe is in communication with the front end of the air inlet chamber, and the two air outlet pipes are in communication with the front ends of the two air outlet chambers.

8. A hot-air oven with an adjustable air-knife according to claim 7, characterized in that An inclined plate is arranged in the air inlet chamber and inclined from front to back and upward, and the front end of the inclined plate is located below the air inlet pipe.

9. The heat oven with an adjustable air knife according to claim 1, wherein, The included angle between the air guide parts of the two air guide plates is 60°-120°.

10. The heat oven with an adjustable air knife according to claim 2, wherein, The hot air oven further comprises a handle, the handle is fixed to the rear end of the box cover, the front end of the box cover is hinged to the box, and the rear end of the box cover is connected to the rear end of the box through a buckle.

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