CN210652286U

CN210652286U - Transfer printing furnace

Info

Publication number: CN210652286U
Application number: CN201920978398.4U
Authority: CN
Inventors: 伊斯梅尔
Original assignee: Shandong Deco-Pro Equipment Manufacturing Corp Ltd
Current assignee: Shandong Deco-Pro Equipment Manufacturing Corp Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-06-02
Anticipated expiration: 2029-06-27

Abstract

The utility model provides a rendition stove, be in including furnace body, setting first distance piece and setting in the furnace body are in the furnace gate of the horizontal both sides of furnace body or vertical both sides is provided with air intake and return air inlet on the furnace body, and first distance piece separates the work piece rendition cavity and the heated air circulation cavity that forms relative interval setting with the furnace body cavity, is provided with the even gas port of a plurality of on the first distance piece, and the rendition stove still includes second distance piece, and second distance piece will heated air circulation cavity separates and forms heated air circulation channel, heated air circulation channel respectively with air intake and each even gas port intercommunication, and, heated air circulation channel is being close to the longitudinal section area of air intake department is greater than and keeps away from the longitudinal section area of air intake department. The transfer printing furnace of the utility model can heat the workpiece more uniformly while continuously heating the workpiece, thereby ensuring that the temperature uniformity in each part of the furnace reaches +/-1 ℃, having better hot air heating efficiency and reducing energy consumption; the working efficiency is improved, and the cost is reduced.

Description

Transfer printing furnace

Technical Field

The utility model relates to a rendition stove especially relates to a rendition stove that can provide even heating system.

Background

Aluminum profiles are applied more and more widely in daily life, and in order to seek beauty, wood grain textures are added to the surfaces of the aluminum profiles for buildings. The existing method for adding wood grain texture on the aluminum profile is commonly used by adopting a wood grain transfer printing technology, for example, Chinese patent application CN102501699A discloses a process method for transferring wood grain on the surface of the aluminum profile, which specifically comprises the steps of carrying out chemical degreasing and deoxidation and electric melting induction treatment on the surface of the aluminum profile; cleaning the surface of the section; coating the wood grain transfer paper on the surface of the section; sleeving a high-temperature bag on the surface of the section; vacuumizing, and adsorbing the wood grain transfer paper on the surface of the section through vacuum negative pressure; placing the section into a transfer printing furnace, controlling the temperature of the transfer printing furnace at 170-190 ℃, and performing transfer printing for 3-7 minutes; removing paper, film and cleaning on the surface of the section; checking, and performing secondary transfer printing on unqualified products; spraying a code on the surface of the finished profile and sticking a protective film; and (6) packaging and warehousing.

However, the wood grain transfer furnace used in the existing wood grain transfer method generally adopts a high-power fan and a single pipeline circulation system with left inlet and right outlet, and does not pay attention to the temperature distribution of circulating hot air after entering the furnace body. The utility model provides a people is through many times experimental discovery, after hot-blast entering furnace body, for example through the exhaust vent air-out on the heated air circulation passageway, can arouse that the inside temperature distribution of furnace body is very inhomogeneous, and this will all be influential to the quality and the efficiency of wood grain rendition.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, it is necessary to provide a design of a hot air circulation system that makes the temperature distribution inside the furnace body uniform by conducting research on the temperature distribution inside the furnace body.

The utility model provides a rendition stove, be in including furnace body, setting first distance piece and setting in the furnace body are in the furnace gate of the horizontal both sides of furnace body or vertical both sides, be provided with air intake and return air inlet on the furnace body, first distance piece will work piece rendition cavity and the heated air circulation cavity that the furnace body inner chamber separated the relative interval and set up, be provided with the even gas port of a plurality of on the first distance piece, the rendition stove still includes second distance piece, second distance piece will the heated air circulation cavity is separated and is formed heated air circulation channel, heated air circulation channel respectively with air intake and each even gas port intercommunication, and, heated air circulation channel is being close to the longitudinal section area of air intake department is greater than and keeps away from the longitudinal section area of air intake department.

Optionally, the area of the longitudinal section of the hot air circulation channel is gradually reduced along the air inlet direction of the transfer printing furnace.

Optionally, the longitudinal section of the hot air circulation channel is in a right-angle trapezoid structure.

Optionally, the hot air circulation passage includes a bottom wall, a top wall disposed opposite to the bottom wall, a first side wall connected to the top wall and the bottom wall, respectively, and a second side wall connected to the top wall and the bottom wall, respectively, wherein:

the first side wall is provided with the air inlet;

the bottom wall is inclined from the first side wall to the second side wall, and the height of the bottom wall at a position close to the first side wall is lower than that at a position close to the second side wall.

Optionally, the first spacer includes a plurality of first sub-spacers arranged at intervals, and a gap between two adjacent first sub-spacers forms the air homogenizing port.

Optionally, a gap between two adjacent first sub-spacers is adjustable.

Optionally, the adjustable range of the gap between two adjacent first sub-spacers is 0mm to 15 mm.

Optionally, the transfer printing furnace further comprises a plurality of fasteners, each fastener comprising an operating part and a screwing part;

a plurality of mounting holes are correspondingly formed in two adjacent first sub-spacers;

the screwing part of each fastener penetrates through the corresponding mounting hole, and the screwing amount of the screwing part is adjusted by operating the operating part so as to change the gap between the two adjacent first sub-spacers.

Alternatively, the fastening member is a fastening bolt, a head portion of the fastening bolt forms the operating portion, and a threaded portion of the fastening bolt forms the fastening portion.

Optionally, the transfer furnace further comprises a support arm fixedly disposed within the hot air circulation chamber, and the support arm carries the second spacer.

Has the advantages that:

the transfer furnace of the utility model improves the structure of the conveying channel of the furnace body, so that the workpiece is heated more uniformly while the workpiece is continuously heated, the uniformity of the temperature at each position in the furnace is ensured to reach +/-1 ℃, the hot air heating efficiency is better, and the energy consumption is reduced; the working efficiency is improved, and the cost is reduced.

Drawings

FIG. 1 is a schematic view of a transfer furnace according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first spacer according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The present invention can be realized in various forms, and is not limited to the embodiment described in the present embodiment. The following detailed description is provided for clarity and understanding of the present invention, wherein the left and right directions of the drawing are taken as the horizontal direction, the up and down directions of the drawing are taken as the vertical direction, and the words indicating the directions such as up, down, left and right are only used for the position of the illustrated structure in the corresponding drawings.

The utility model discloses an in the description, for the convenience of describing technical scheme clearly, the length direction definition that will transfer the printing stove is horizontal, the width direction definition of transfer printing stove is vertical, and the cross-section that is on a parallel with transfer printing stove width direction side is longitudinal section, the cross-section that is on a parallel with transfer printing stove length direction side is the cross section.

Generally, a transfer furnace includes a furnace body, a pair of furnace doors disposed at the front and rear, or left and right of the furnace body, and a hot air circulation system, wherein transfer materials (e.g., aluminum profiles and the like) enter the furnace body cavity from the furnace doors for heating and transferring, the hot air circulation system includes, for example, a combustion liner disposed at the top end of the furnace body, a burner for supplying heat to the combustion liner, and a pair of circulating air blowing assemblies respectively connected to both sides of the combustion liner for supplying hot air to the furnace body cavity. The hot air enters a hot air circulation channel below the inner cavity of the furnace body through a pipeline, the hot air circulation channel is formed by spacing the inner cavity of the furnace body, for example, a plurality of partition plates are paved in the transverse direction and the longitudinal direction of the inner cavity of the furnace body, and the inner cavity of the furnace body is divided into a transfer printing working area and a hot air circulation channel by the plurality of partition plates.

In order to make hot-blast entering furnace body intracavity can realize even temperature distribution, the utility model discloses do following improvement and design to the heated air circulation passageway: the constant-section hot air circulation channel is preferably changed into a gradually-changed-section hot air circulation channel; namely, a slope is arranged along the flowing direction of the hot air circulation, so that the section of the hot air circulation channel gradually changes, and the section which is farther away from the air inlet is smaller.

According to fluid dynamics, hot air fluid needs to reach temperature balance in a circulating channel with the same section, the length of the circulating channel is several meters or even more than 10 meters, the temperature in the whole circulating channel is uniform and consistent, and the hot air fluid is slow and not easy to realize; but by changing the longitudinal section area of the circulating channel, the flow rate and volume of the hot air are changed, and uniform temperature can be rapidly obtained, and the following description will explain the specific embodiment of the present invention.

As shown in fig. 1 and 2, a transfer furnace 100 includes a furnace body 110, a first spacer 120 disposed inside the furnace body 110, and furnace doors (not shown) disposed on both lateral sides or both longitudinal sides of the furnace body 110, wherein an air inlet 111 and an air return opening (not shown, the air return opening is generally disposed on the top of the furnace body 110) are disposed on the furnace body 110. The first partition piece 120 divides the inner cavity of the furnace body 110 into a workpiece transfer printing chamber 130 and a hot air circulation chamber 140, and a plurality of uniform air ports 122 are arranged on the first partition piece 120. The transfer furnace 100 further includes a second partition 150, the second partition 150 partitioning the hot air circulation chamber 140 to form a hot air circulation passage 141, and the hot air circulation passage 141 is communicated with the air inlet 111 and each air uniformizing opening 122, respectively. Also, as shown in fig. 1, the longitudinal cross-sectional area of the hot air circulation channel 141 near the air inlet 111 is larger than that far from the air inlet 111, that is, as shown in fig. 1, the longitudinal cross-sectional area of the hot air circulation channel 141 at the left end is larger than that at the right end, and preferably, as shown in fig. 1, the longitudinal cross-sectional area of the hot air circulation channel 141 is gradually smaller in the air intake direction along the transfer furnace, as shown in the air intake direction from left to right in fig. 1, and of course, the change of the longitudinal cross-sectional size of the hot air circulation channel 141 in particular needs to be determined according to actual needs (e.g., the actual furnace body size and the temperature distribution change).

Specifically, as shown in fig. 1, the hot air a enters the hot air circulation channel 141 through the air inlet 111, and since the longitudinal cross-sectional area of the hot air circulation channel 141 near the air inlet 111 is larger than the longitudinal cross-sectional area of the hot air circulation channel far from the air inlet 111, that is, as shown in fig. 1, the internal volume of the hot air circulation channel 141 near the air inlet 111 is larger than the internal volume of the hot air circulation channel far from the air inlet 111, as can be known from fluid dynamics, the flow rate and the volume of the hot air can be changed, so that the temperature of the hot air diffused from the uniform air port to the workpiece transfer printing chamber 130 can be more uniform, while the workpiece is continuously heated, the workpiece is heated more uniformly, the uniformity of the temperature at each position in the furnace can be guaranteed to be ± 1 ℃, the; the working efficiency is improved, and the cost is reduced.

In order to further make the temperature of the hot air diffused from the uniform air port to the workpiece transfer chamber 130 more uniform, as shown in fig. 1, the longitudinal section of the hot air circulation channel 141 may have a right-angled trapezoid structure, and of course, besides, the longitudinal section of the hot air circulation channel 141 may have other shapes, which may be determined according to actual needs.

Specifically, as shown in fig. 1, the hot air circulation passage 141 includes a bottom wall 141a, a top wall 141b disposed opposite to the bottom wall 141a, a first side wall 141c connected to the top wall 141b and the bottom wall 141a, respectively, and a second side wall 141d connected to the top wall 141b and the bottom wall 141a, respectively. The air inlet 111 is disposed on the first side wall 141c, the bottom wall 141a is inclined from the first side wall 141c to the second side wall 141d, and the height of the bottom wall 141a at a position close to the first side wall 141c is lower than the height of the bottom wall 141a at a position close to the second side wall 141 d. That is, as shown in fig. 1, the bottom wall 141a is inclined upward and rightward, and the bottom wall 141a is the second spacer 150.

As shown in fig. 1 and fig. 2, the first spacer 120 includes a plurality of first sub-spacers 121 arranged at intervals, and the gap between two adjacent first sub-spacers 121 forms the air uniforming opening 122. Also, in order to further improve the temperature uniformity of the hot air distributed in the workpiece transfer chamber 130, the gap between two adjacent first sub-spacers 121 is adjustable.

Specifically, for example, the transfer furnace 100 further includes a plurality of fastening members (e.g., bolts, etc.), each fastening member includes an operating portion (e.g., a nut, etc.) and a fastening portion (e.g., a screw, etc.), a plurality of mounting holes are correspondingly disposed on two adjacent first sub-spacers 121, so that the fastening portion of each fastening member is inserted into the corresponding mounting hole, and if a gap between two adjacent first sub-spacers 121 needs to be adjusted, the operating portion can be operated, so that the screwing amount of the fastening portion can be changed, and thus the gap between two adjacent first sub-spacers 121 can be changed.

It should be noted that, besides the adjustment of the gap between two adjacent first sub-spacers in the above manner, the adjustment may also be performed by some other adjustment manner, which may be determined according to actual needs.

The rendition stove of this embodiment, it forms even gas port through adopting the clearance between two adjacent first subspacers, compares the tradition and directly sets up out the wind hole mode on the spacer, can simplify the manufacturing process of spacer, improves economic benefits, in addition, through the clearance between two adjacent first subspacers of reasonable setting, can the hot-blast temperature distribution that gets into in the work piece rendition cavity of effective control, can further effectively realize temperature evenly distributed, improves the rendition yield.

It should be noted that the adjustable range of the gap between two adjacent first sub-spacers 121 is not particularly limited, and preferably the adjustable range of the gap is 0mm to 15 mm. Of course, besides, those skilled in the art may also design other gap adjustable range values according to actual needs.

The second spacer 150 may be supported on, for example, a side wall of the furnace body cavity, and when the furnace body is wide, a support wall may be additionally provided between the side walls to divide the hot air circulation passage 141 into the first heat circulation passage and the second heat circulation passage.

The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a transfer printing stove, includes the furnace body, sets up first distance piece in the furnace body and setting are in the furnace gate of the horizontal both sides of furnace body or vertical both sides, be provided with air intake and return air inlet on the furnace body, first distance piece will the furnace body inner chamber is separated and is formed work piece rendition cavity and the heated air circulation cavity that relative interval set up, be provided with the even gas port of a plurality of on the first distance piece, a serial communication port, the transfer printing stove still includes the second distance piece, the second distance piece will the heated air circulation cavity is separated and is formed heated air circulation channel, heated air circulation channel respectively with air intake and each even gas port intercommunication, and, heated air circulation channel is being close to the longitudinal section area of air intake department is greater than and is kept away from the longitudinal section area of air intake department.

2. The transfer furnace according to claim 1, wherein a longitudinal sectional area of the hot air circulation passage is gradually reduced in a direction along an air intake direction of the transfer furnace.

3. The transfer furnace according to claim 2, wherein the longitudinal section of the hot air circulation passage has a right-angled trapezoidal structure.

4. The transfer printing furnace according to claim 2, wherein the hot air circulation passage includes a bottom wall, a top wall disposed opposite to the bottom wall, first side walls connected to the top wall and the bottom wall, respectively, and second side walls connected to the top wall and the bottom wall, respectively, wherein:

the first side wall is provided with the air inlet;

5. The transfer furnace according to claim 1, wherein the first spacers include a plurality of first sub-spacers arranged at intervals, and a gap between two adjacent first sub-spacers forms the air uniforming port.

6. The transfer furnace of claim 5, wherein a gap between adjacent two of the first sub-spacers is adjustable.

7. The transfer furnace according to claim 6, wherein the gap between two adjacent first sub-spacers is adjustable in a range of 0mm to 15 mm.

8. The transfer furnace of claim 6, further comprising a plurality of fasteners, each fastener comprising an operating portion and a tightening portion;

9. The transfer furnace according to claim 8, wherein the fastening member is a fastening bolt, a nut of the fastening bolt forms the operating portion, and a screw of the fastening bolt forms the fastening portion.

10. The transfer oven according to any one of claims 1 to 9, further comprising a support arm fixedly disposed within the hot air circulation chamber, and wherein the support arm carries the second spacer.