CN101315017A - Steel security door section and hemming process - Google Patents
Steel security door section and hemming process Download PDFInfo
- Publication number
- CN101315017A CN101315017A CNA2008100624599A CN200810062459A CN101315017A CN 101315017 A CN101315017 A CN 101315017A CN A2008100624599 A CNA2008100624599 A CN A2008100624599A CN 200810062459 A CN200810062459 A CN 200810062459A CN 101315017 A CN101315017 A CN 101315017A
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- door
- front door
- rear door
- door plate
- steel security
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Abstract
The invention relates to a steel security door leaf and a crimping process thereof. The steel security door leaf comprises a front door plate and a rear door plate, wherein a door core is filled in a cavity between the front door plate and the rear door plate. The steel security door leaf is characterized in that the side part of the front door plate is folded for 180 degrees inward, so as to cover the edge of the rear door plate, and form a three-layer sandwich-shaped fitted covered edge. The covered edge and the main body of the front door plate form a bending angle larger than and equal to 45 degrees. The crimping process comprises the following steps: (a), the side part of the front door plate is bent upwards, and the bending angle is larger than and equal to 90 degrees; (b), one open side of the cavity of the rear door plate is stuck to one side towards which the side part of the front door plate is bent, and the convex edge of the rear door plate is fitted with the front door plate; (c), the bent part of the front door plate is folded inwards, so as to cover the convex edge of the rear door plate, and the three-layer sandwich-shaped fitted covered edge is formed; and (d), the three-layer sandwich-shaped fitted covered edge is bent towards the inverse direction of the opening of the cavity of the rear door plate, and the overall bending angle is larger than and equal to 45 degrees. The steel security door leaf and crimping process have the advantages that the overall structural performance of the door leaf is good, and the strength is high; and the crimping process can avoid the spot welding process step.
Description
Technical field
The present invention relates to safe door leaf technical field, particularly a kind of steel security door fan and flanging process thereof.
Background technology
Existing safe door leaf all is a steel material generally, comprises front door and Rear Door, fills the door core material in the cavity of Rear Door, because present safety door all requires to have certain fire-proof function, so the door core material is all made by refractory material.Front door and Rear Door generally are performed such combination: the inside turnup in the edge of front door, form a draw-in groove parallel with front door, Rear Door cavity opening one side is provided with chimb, this chimb inserts in the draw-in groove of front door, and the chimb of Rear Door and front door draw-in groove just have been connected together like this.There is following shortcoming in the door leaf of this structure, combining between Rear Door and the front door, mainly be elasticity by Rear Door cavity sidewalls self, its bond strength is limited, need further strengthen the combination of Rear Door and front door with spot welding, could prevent effectively that like this Rear Door and front door break away from, but spot welding forms rosin joint and dry joint easily, so the door leaf quality is very unstable.The door core material of filling in the Rear Door cavity must be soft compressible material, because the door leaf of this structure needs extruding Rear Door cavity sidewalls earlier in manufacturing process, make its distortion, the chimb of Rear Door just can enter the front door draw-in groove then, the door core material is inevitable like this is out of shape because of being squeezed, so the soft fire proofing material of the general employing of door core material.Soft fire proofing material generally all contains organic matter, so its fireproof performance is lower than hard fire proofing material.Weather strip all sticks on door leaf limit portion by bonding adhesive, comes unstuck easily and comes off.
The crimping manufacture craft of existing door leaf, all need with spot-welding technology further increase Rear Door and front door between bond strength.Spot-welding technology can stay crator at face of weld, in order to reduce of the influence of spot welding crator to the door leaf overall aesthetics, existing manufacture craft all is earlier front door and Rear Door to be carried out spot welding, so painting again, promptly earlier the door core material is filled the Rear Door cavity, with front door and Rear Door clamping, by spot welding front door and Rear Door junction are reinforced last painting more then.So before the door leaf surface painting, the door core material has been installed in the door leaf, if the door leaf after the painting is carried out high-temperature baking,, the fireproof performance of a core material is descended to accelerate paint curing speed, influence the fire savety of door leaf; If do not carry out high-temperature baking after the painting, so You Qi hardening time just long, production efficiency just reduces greatly.
As seen, safe door leaf of the prior art needs between its front door and the Rear Door to fix reinforcement with spot welding, and such door leaf overall structure is poor, influences door leaf intensity.The crimping manufacture craft of existing safe door leaf stays crator easily on door leaf, influence the aesthetic property of door leaf, and production efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of overall structure good, the intensity height does not need spot welding to strengthen, and weather strip is installed firm steel security door fan; The present invention also provides a kind of can avoid the spot-welding technology step, does not influence the overall appearance of door leaf, and the steel security door that can enhance productivity fan flanging process.
For providing a kind of overall structure good, the intensity height, do not need spot welding to strengthen, weather strip is installed firm steel security door fan, and the technical solution used in the present invention is: a kind of steel security door fan comprises front door and Rear Door, be filled with a core in the cavity between front door and the Rear Door, it is characterized in that: Qianmen edges of boards portion is turnover 180 degree inwardly, coat the Rear Door edge, form the bound edge that the three-layer sandwich shape is fitted.
Described bound edge and front door main body form the bending more than or equal to 45 degree.Described bound edge is done as a whole, and itself and front door main body form the bending more than or equal to 45 degree, and itself also can repeatedly bend this bound edge, even is bent into wave-like.
Further, described bound edge and front door main body form the bending more than or equal to 90 degree.
Be provided with elastic sealing strip between described bound edge and the Rear Door sidewall.
Described door core is a hard labeled door core.
The surrounding portion of described front door all inwardly turns down 180 degree, coats the Rear Door edge respectively, and every limit forms the bound edge that a three-layer sandwich shape is fitted; Described bound edge all forms the bending of spending more than or equal to 45 with the front door main body, is preferably more than the bendings that equal 90 degree.
Can avoid the spot-welding technology step for providing a kind of, not influence the overall appearance of door leaf, and the steel security door that can enhance productivity fan flanging process, the technical solution used in the present invention is: steel security door fan flanging process may further comprise the steps:
A) with the upwards bending of Qianmen edges of boards portion, bending angle 〉=90 °;
B) side with Rear Door cavity opening is attached to the side that Qianmen edges of boards portion bends towards, and Rear Door chimb and front door are fitted;
C) the front door kink is inwardly turned down, coat Rear Door chimb edge, form the bound edge that a three-layer sandwich shape is fitted;
D) bound edge that the three-layer sandwich shape is fitted is to the opposite direction bending of Rear Door cavity opening, and whole bending angle 〉=45 degree forms a groove in back door edges of boards portion like this;
E) in above-mentioned groove, insert elastic sealing strip.
The limit portion of steel security door fan front door coats Rear Door chimb edge, and at the bound edge of a three-layer sandwich shape of back door edges of boards portion formation, front door and Rear Door closely fixedly fit together like this, and its intensity and safety all weld than point.The bound edge of the three-layer sandwich shape of back door edges of boards portion is to the bending of the opposite direction of Rear Door cavity opening, every bending once, its bending angle just adds up, the bending angle of final accumulative total is more than or equal to 90 degree.The bound edge of the three-layer sandwich shape after the bending and Rear Door cavity sidewalls form a groove, the installation for weather strip when strengthening door leaf limit portion intensity of this groove provides convenience, and elastic sealing strip is contained in this groove, and is not only easy for installation, and firm with combining of door leaf, be not easy to come off.
The flanging process that the present invention adopts: the chimb that coats Rear Door cavity one side by the limit portion of front door bending, form the bound edge of a three-layer sandwich shape in back door edges of boards portion, bound edge with this three-layer sandwich shape bends to the opposite direction of Rear Door cavity opening then, forms a groove in back door edges of boards portion.Four limits of door leaf all can adopt this technology to make.This flanging process does not need spot welding, and having overcome needs in the prior art with spot welding door leaf to be strengthened, and causes door leaf surface to have crator, the technological deficiency that the door leaf overall structure is poor, intensity is low.This flanging process and carries out after high-temperature baking makes paint curing after forward and backward door-plate has been coated with paint, can not cause adverse effect to the overall aesthetics of door leaf.Adopt this flanging process, just can painting before crimping, and do not influence the overall appearance of door leaf, and can carry out high-temperature baking after the painting, saved Production Time, improved production efficiency greatly.
In sum, steel security door overall structure provided by the invention is good, and intensity is big, need not spot welding and strengthens, and has overcome the available technology adopting spot-welding technology and has stayed crator easily, influences the technical problem of door leaf overall appearance.The limit portion of steel security door forms a groove, and elastic sealing strip is contained in this groove, and is easy for installation and firm, overcome the technological deficiency that weather strip comes unstuck easily and comes off in the prior art.Steel security door flanging process provided by the invention, the processing step of having avoided available technology adopting spot welding that the combination of door leaf plate is further strengthened has overcome spot welding and has been easy to generate rosin joint and dry joint, the technical problem of hiding some dangers for for the door leaf safe mass.Adopt this flanging process not influencing the door leaf overall appearance, guarantee to improve the production efficiency of door leaf under the prerequisite of door core material safety.
Description of drawings
Fig. 1 is existing steel security door fan vertical section structure schematic diagram
Fig. 2 is existing steel security door fan cross-sectional structure schematic diagram
Fig. 3 is steel security door fan Facad structure schematic diagram of the present invention
Fig. 4 is steel security door fan vertical section structure schematic diagram of the present invention
Fig. 5 is steel security door fan cross-sectional structure schematic diagram of the present invention
Fig. 6 is steel security door fan flanging process step a) structural representation of the present invention
Fig. 7 is steel security door fan flanging process step c) structural representation of the present invention
Fig. 8 is steel security door fan flanging process step d) structural representation of the present invention
Fig. 9 is embodiment 4 flanging part structural representations
Figure 10 is embodiment 5 flanging part structural representations
The specific embodiment
Embodiment 1:
Embodiment 1 is the steel security door fan of prior art, as shown in Figure 1 and Figure 2.Existing safe door leaf generally all is a steel material, comprise front door 1 and Rear Door 2, filled soft fireproof door core material material 3 in the cavity of Rear Door, the inside turnup in the edge of front door, form a draw-in groove parallel 4 with front door, Rear Door cavity opening one side is provided with chimb 5, and this chimb 5 inserts in the draw-in groove 4 of front door, and the chimb 5 of Rear Door carries out clamping with the draw-in groove 4 of front door like this.Be connected by solder joint 6 between the edge 4a of front door draw-in groove and the Rear Door cavity sidewalls 2a.
There is following shortcoming in the door leaf of this structure, and combining between Rear Door 2 and the front door 1 mainly is the elasticity by Rear Door cavity sidewalls 2a self, and its bond strength is limited, need further strengthen the combination of Rear Door and front door with spot welding; The door core material of filling in the Rear Door cavity must be soft compressible material, because the door leaf of this structure needs extruding Rear Door cavity sidewalls 2a earlier in manufacturing process, make its distortion, the chimb 5 of Rear Door just can enter front door draw-in groove 4 then, the door core material must be squeezed and be out of shape like this, so the door core material must be a soft elastic material.Weather strip all sticks on door leaf limit portion by bonding adhesive, comes unstuck easily, and then comes off.
Embodiment 2:
Embodiment 3:
Embodiment 3 is for the fan of the steel security door among the present invention flanging process, as Fig. 6, Fig. 7, shown in Figure 8.
The flanging process of steel security door fan:
The first step, with upwards bending of the Qianmen edges of boards 7a of portion, bending angle 〉=90 °;
Second step was attached to the side that Qianmen edges of boards portion bends towards with a side of Rear Door cavity opening, Rear Door chimb 8d and front door 7 applyings;
In the 3rd step, 7a inwardly turns down with the front door kink, coats Rear Door chimb 8d edge, forms the bound edge 11 that a three-layer sandwich shape is fitted;
In the 4th step, the bound edge 11 that the three-layer sandwich shape is fitted bends to the opposite direction of Rear Door cavity opening, and whole bending angle is 90 degree, forms a groove 10 in back door edges of boards portion like this;
In the 5th step, in above-mentioned groove 10, insert elastic sealing strip 12.
The width of the 7a of Qianmen edges of boards portion is 10cm, and the width of Rear Door chimb 8d is 32cm.
Embodiment 4:
As shown in Figure 9, the bound edge 12 of three-layer sandwich shape is to the opposite direction bending of Rear Door 8 cavity openings, be shaped as circular arc after its bending, the angle α that the summit 12a of bending back bound edge and the straight line that front door inflection point 7b is linked to be and front door extension line constitute 120 spends.All the other are with embodiment 2.
Embodiment 5:
As shown in figure 10, the bound edge 13 of three-layer sandwich shape forms 90 degree bendings to the opposite direction bending of Rear Door 8 cavity openings with front door main body 7, and the epimere 13a of bound edge 13 is to opposite direction bending 90 degree of bound edge overbending direction, the epimere 13a of bound edge 13 is parallel with front door main body 7, and all the other are with embodiment 2.
Claims (9)
1, a kind of steel security door fan, comprise front door (7) and Rear Door (8), be filled with a core (9) in the cavity between front door and the Rear Door, it is characterized in that: Qianmen edges of boards portion (7a) inwardly turns down 180 degree, coat the Rear Door edge, form the bound edge that the three-layer sandwich shape is fitted.
2, steel security door fan according to claim 1, it is characterized in that: described bound edge and front door main body form the bending greater than 45 degree.
3, steel security door fan according to claim 2, it is characterized in that: described bound edge and front door main body form the bending more than or equal to 90 degree.
4, according to claim 2 or 3 described steel security door fans, it is characterized in that: be provided with elastic sealing strip between described bound edge and the Rear Door sidewall.
5, steel security door fan according to claim 1 is characterized in that: described door core is a hard labeled door core.
6, steel security door fan according to claim 1, it is characterized in that: the surrounding portion (7a) of described front door all inwardly turns down 180 degree, coats the Rear Door edge respectively, and every limit forms the bound edge that a three-layer sandwich shape is fitted.
7, steel security door fan according to claim 6, it is characterized in that: described bound edge and front door main body form the bending greater than 45 degree.
8, steel security door fan according to claim 7, it is characterized in that: described bound edge and front door main body form the bending more than or equal to 90 degree.
9, steel security door fan flanging process is characterized in that: may further comprise the steps:
A) with upwards bending of Qianmen edges of boards portion (7a), bending angle 〉=90 °;
B) side with Rear Door cavity opening is attached to the side that Qianmen edges of boards portion bends towards, and Rear Door chimb (10d) is fitted with front door (7);
C) with inwardly turnover of front door kink (7a), coat Rear Door chimb (10d) edge, form the bound edge (11) that a three-layer sandwich shape is fitted;
D) bound edge (11) that the three-layer sandwich shape is fitted is to the opposite direction bending of Rear Door cavity opening, and accumulative total bending angle 〉=90 degree forms a groove (10) in back door edges of boards portion like this;
E) in above-mentioned groove (10), insert elastic sealing strip (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100624599A CN101315017A (en) | 2008-06-11 | 2008-06-11 | Steel security door section and hemming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100624599A CN101315017A (en) | 2008-06-11 | 2008-06-11 | Steel security door section and hemming process |
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| Publication Number | Publication Date |
|---|---|
| CN101315017A true CN101315017A (en) | 2008-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100624599A Pending CN101315017A (en) | 2008-06-11 | 2008-06-11 | Steel security door section and hemming process |
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| Country | Link |
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| CN (1) | CN101315017A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481365A (en) * | 2014-12-01 | 2015-04-01 | 江苏省金鑫安防设备有限公司 | Novel burglary resistant safety door and preparation method thereof |
| CN105584494A (en) * | 2015-12-15 | 2016-05-18 | Ife-威奥轨道车辆门系统（青岛）有限公司 | Vehicle door for rail vehicle and rail vehicle including the same |
| CN105888487A (en) * | 2016-05-31 | 2016-08-24 | 湖北永和安门业有限公司 | Door leaf structure for fireproof door |
-
2008
- 2008-06-11 CN CNA2008100624599A patent/CN101315017A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481365A (en) * | 2014-12-01 | 2015-04-01 | 江苏省金鑫安防设备有限公司 | Novel burglary resistant safety door and preparation method thereof |
| CN105584494A (en) * | 2015-12-15 | 2016-05-18 | Ife-威奥轨道车辆门系统（青岛）有限公司 | Vehicle door for rail vehicle and rail vehicle including the same |
| CN105584494B (en) * | 2015-12-15 | 2017-11-24 | Ife-威奥轨道车辆门系统（青岛）有限公司 | Vehicle doorn for rail vehicle and the rail vehicle including the vehicle doorn |
| US10927594B2 (en) | 2015-12-15 | 2021-02-23 | Ife-Victall Railway Vehicle Door Systems (Qingdao) Co., Ltd. | Vehicle door for railway vehicle and railway vehicle comprising the vehicle door |
| CN105888487A (en) * | 2016-05-31 | 2016-08-24 | 湖北永和安门业有限公司 | Door leaf structure for fireproof door |
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| PB01 | Publication | ||
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Open date: 20081203 |