KR101933353B1 - Apparatus for manufacturing Fire door - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a fire door. The present invention comprises: a steel sheet cutting machine for trimming an edge part of a steel sheet and perforating a hole; a side forming machine forming a side bending part on the steel sheet completed with a cutting process; and an upper and lower end part cutter penetrating the steel sheet processed with the side bending part through the inside thereof, adjusting the location to forward and backward directions, and having a bending roller sequentially bending an upper end part and a lower end part. The apparatus for manufacturing a fire door of the present invention is able to perform remarkably precise and quick bending operation on the steel sheet such that an entire productivity can be improved and maintenance can be simply done.

Description

{Apparatus for manufacturing Fire door}

The present invention relates to a fire door manufacturing apparatus, and more particularly, to a fire door manufacturing apparatus having improved dimensional accuracy because productivity can be improved by accurately connecting apparatuses at each step to realize accurate square bending.

A fire door installed at an entrance of an apartment, a mall, or a public building is used to reduce the diffusion rate of flame or toxic gas when a fire occurs, for example, to secure time for the resident to evacuate and to minimize human loss due to fire Respectively. For this purpose, fire doors are designed to have insulation, airtightness and fire resistance.

There are various kinds of fire doors in accordance with the specification. Generally, an inner frame, an inner steel plate and an outer steel plate in the form of a square frame are manufactured separately. Then, the inner frame and the heat insulating material are arranged on the inner steel plate, Followed by hot pressing in a hot press. The inner steel plate and the outer steel plate are prepared through processes such as punching, trimming, forming, and bending.

The bending device for bending the rim of the inner steel plate and the outer steel plate in the manufacturing process of the fire door as described above may include a pedestal supporting horizontally the steel plate to be processed, an elevator installed vertically above the pedestal, A stator for pressing the iron plate downward after it is lowered, and a bending portion for folding up the rim of the fixed iron plate.

However, in the conventional bending apparatus, the width of the stopper for determining the position of the steel plate can not be adjusted, the apparatus is complicated, and maintenance is difficult during wear, resulting in poor dimensional precision. In addition, since the bent portion is provided only on one side of the pedestal, the one end of the steel plate must be bent and then bent 180 degrees to bend the opposite side, so that the work is very inconvenient and the productivity is low. When such a conventional bending device is installed in an automation line, it is needless to say that the overall productivity is lowered due to the bending device.

Korean Patent Registration No. 10-1849770 (fireproof door manufacturing apparatus) Korean Registered Utility Model No. 20-0295231 (Handle Hole Punching Device for Fireproof Door Manufacturing Process) Korean Registered Utility Model No. 20-0296071 (Foaming device for fire door manufacturing process)

It is an object of the present invention to provide a fire door manufacturing apparatus which is very accurate and quick to bend an iron plate to improve the overall productivity and can be easily maintained.

According to the present invention, there is provided an apparatus for manufacturing a fire door, comprising a rectangular steel plate having parallel upper and lower ends and both end portions, the steel plate being trimmed to have a designed shape, Wow; A side forming machine for horizontally transferring the steel plate after cutting by the steel plate cutting machine and forming a side bent portion at both side ends of the steel plate; The iron plate having the side bending portion processed therein is passed through the inside of the iron plate, and the position is adjusted in the forward direction and the backward direction, and the upper and lower ends are successively bent. The iron plate is shaped like a rectangle, A frame for horizontally supporting the presser bar, a lift block installed on the upper portion of the presser bar so as to be able to move up and down, A plurality of pressing feet arranged in the width direction of the iron plate and having an edge portion that is aligned with the corner portion of the pressing pad in a completely lowered state, a stopper for restricting the movement of the pressing foot, In a state of being spaced apart from the edge portion of the pressing band by a predetermined distance and rotating upward, And a pivoting plate driving means for driving the pivoting plate. The supporting structure for supporting the pivoting plate driving means is provided at a lower portion of the pivoting plate and supports the pivoting plate driving means. And a folding roller which is supported by the support structure and extends horizontally and which rises to the vertical portion in a state in which the iron plate is sandwiched between the pressing foot and the platen to thereby upwardly bend the pressing foot and the portion extending to the outside of the platen, .

Further, the rotary plate is rotatably supported on the support structure through a horizontal rotary shaft, and the rotary plate driving means is linked to the bottom surface of the rotary support plate through the support pin, And an actuator that rotates based on the reference position.

In addition, the elevating block includes: A pair of holding slits extending in the width direction of the steel plate and parallel to each other and opened to the bottom, and an opening / closing passage for opening the holding slits forward and rearward of the elevating block and providing an access path for the pressing foot to the holding slit And a stopper fitting hole extending in a direction crossing the holding slit, the stopper fitting hole being formed in the side of the entry / exit passage for receiving the stopper; An insertion head inserted into the holding slit and slidable along a longitudinal direction of the holding slit and a body having a pressing surface portion integrally formed at a lower portion of the insertion head and pressing down the iron plate, , And a magnet for exchanging a magnetic force with a neighboring pressing foot.

Further, the stopper includes: The insertion head supports the insertion head supported by the holding slit while being inserted into the stopper insertion hole to block the insertion head from being pushed out toward the entrance and exit passage.

According to the fire door manufacturing apparatus of the present invention, the bending operation for the iron plate is very accurate and quick, thereby improving the overall productivity and facilitating maintenance.

FIG. 1 is a diagram for explaining the overall configuration of a fire door manufacturing apparatus according to an embodiment of the present invention.
2A is a side view separately showing the steel plate cutting machine shown in FIG.
Figs. 2B and 2C are plan views of the outer and inner plates manufactured using the steel plate cutting machine shown in Fig. 2A. Fig.
FIG. 3A is a plan view showing the side forming machine shown in FIG. 1 separately.
FIG. 3B is a perspective view showing an outer plate or inner plate in which a side bent portion is formed by using the side forming machine of FIG. 3A.
4 is a perspective view of the upper and lower end bending machines shown in Fig.
5 is a front view of the upper and lower end bending machines shown in Fig.
6 is a cutaway exploded perspective view for explaining the detailed structure of the lift block shown in Fig.
Fig. 7 is a view showing a bottom surface of the elevating block shown in Fig. 6. Fig.
8 is a partial cross-sectional view showing the internal structure of the ascending / descending block shown in Fig.
9A to 9D are views for explaining the operation of the upper and lower end bending machines shown in Fig.
FIG. 10 is a view showing reference to a state of a fire door assembly in a state where an outer plate and an outer plate are joined together after bending the upper and lower ends.
Figs. 11A and 11B are views for explaining the configuration and operation of the engaging device shown in Fig.
12 is a side view showing the structure of the presser shown in Fig.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

The fire door designing apparatus 10 according to the present embodiment to be described later is a series of devices for bending and assembling a prepared pair of iron plates several times and then pressing them. The product manufactured through the manufacturing apparatus 10 is to be a semi-finished product and should be fitted with a handle or a lens of a sight window.

The basic construction of the fire door designing apparatus 10 includes a steel plate cutting machine for receiving a rectangular steel plate having parallel upper and lower end portions and both end portions and trimming the edge portion of the steel plate into a designed shape and puncturing a necessary hole; A side forming machine for horizontally transferring the steel plate after cutting by the steel plate cutting machine and forming a side bent portion at both side ends of the steel plate; The iron plate having the side bending portion processed therein is passed through the inside of the iron plate, and the position is adjusted in the forward direction and the backward direction, and the upper and lower ends are successively bent. The iron plate is shaped like a rectangle, A frame for horizontally supporting the presser bar, a lift block installed on the upper portion of the presser bar so as to be able to move up and down, A plurality of pressing feet arranged in the width direction of the iron plate and having an edge portion that is aligned with the corner portion of the pressing pad in a completely lowered state, a stopper for restricting the movement of the pressing foot, In a state of being spaced apart from the edge portion of the pressing band by a predetermined distance and rotating upward, And a pivoting plate driving means for driving the pivoting plate. The supporting structure for supporting the pivoting plate driving means is provided at a lower portion of the pivoting plate and supports the pivoting plate driving means. And a folding roller which is supported by the support structure and extends horizontally and which rises to the vertical portion in a state in which the iron plate is sandwiched between the pressing foot and the platen to thereby upwardly bend the pressing foot and the portion extending to the outside of the platen, .

FIG. 1 is a diagram for explaining the overall configuration of a fire door manufacturing apparatus according to an embodiment of the present invention.

As shown in the figure, the fire door manufacturing apparatus 10 according to the present embodiment includes a steel plate cutting machine 20, a side forming machine 30, upper and lower end folding machines 40, a folding machine 60, .

The steel plate cutting machine 20 receives and cuts and trims the sheet iron sheet 11 fed through the steel sheet feeder 13 and the side forming machine 30 bends both ends in the width direction of the steel sheet. The upper and lower end folding machines 40 bend the upper and lower end portions of the iron plate. The four edges of the steel plate, that is, the outer plate 11a and the inner plate 11b, which have passed through the upper and lower end folding machines 40, are bent into a predetermined shape and are overlapped and assembled to face each other by an operator. At this time, an interior material such as a heat insulating material and a supporting frame is interposed between the outer sheath 11a and the inner sheath 11b. As shown in Fig. 10, the edge of the outside sheathing 11a and the inside sheathing 11b are not folded together with respect to each other.

The interior material insertion and gluing can be performed manually by an operator.

The folding machine 60 folds and joins the outer and inner plates in the assembled state, and the presser 70 is a device for heating and pressing the semi-finished product type fire door in a state where the folding is completed to stabilize the heat.

The configuration and operation of each step-by-step device will be described below.

FIG. 2A is a side view of the steel plate cutting machine 20 shown in FIG. 1, and FIG. 2B and FIG. 2C are plan views of the outer plate 11a and the inner plate 11b manufactured using the steel plate cutting machine shown in FIG. to be.

As shown in the figure, the steel plate cutting machine 20 has a horizontal XY table 21 and a cutter 25 disposed on the upper side of the XY table. The XY table 21 horizontally feeds the X-direction and Y-direction with the steel plate 11 to be processed fixed and supported. By the movement of the XY table 21, the portion to be cut of the steel plate passes through the vertical lower portion of the cutter 25.

The cutter 25 may be a laser cutter or a punch. The cutter 25 irradiates a laser or physically descends to cut the steel plate 11 into a designed shape. The edge portions of the steel plate are trimmed into the designed shape and the necessary holes are drilled so that the upper end portion 11c and the lower end portion 11m of the outer sheath 11a and the inner sheath 11b Shaped grooves 11r are formed or the perforation holes 11d are formed in the inside.

The edge processing including the upper and lower end portions 11c and 11m and the both end portions 11p and 11q of the outer plate 11a and the inner plate 11b and the processing of the perforation hole 11d are completed through the steel plate cutting machine 20 To the side forming machine 30. The movement to the side forming machine 30 can be automated through a conveying conveyor.

Fig. 3A is a plan view separately showing the side forming machine 30 shown in Fig. 1, and Fig. 3B is a sectional view of the side forming machine shown in Fig. 3A, in which the side bending portion 11e is formed in the outside plate 11a or the inside plate 11b FIG.

As shown in the figure, the side forming machine 30 includes a horizontal die 33 having a predetermined width and extending elongated, a plurality of forming rollers 31 provided at the center in the width direction of the die 33, And an entry guide 34 for guiding the inner plate 11b in the direction of arrow A.

The forming roller 31 passes one end portion 11p and the other end portion 11q of the object to be processed and forms a side bent portion 11e. It is a matter of course that the shape of the side bending portion 11e varies depending on the shape of the forming roller 31. [

Reference numeral 11f denotes a line to be bent. The line to be bent 11f is a folding line folded at right angles by the upper and lower end folding machines 40 to be described later.

Fig. 4 is a perspective view of the upper and lower end folding machine 40 shown in Fig. 1, and Fig. 5 is a front view. Fig. 6 is a perspective view showing the detailed structure of the elevating block shown in Fig. 4, Fig. 7 is a bottom view of the elevating block, and Fig. 8 is a view showing the internal structure of the elevating block. 9A to 9D are views for explaining the operation of the upper and lower end bending machines.

Basically, the upper and lower end folding machines 40 pass the steel plates, that is, the outer plates 11a and the inner plates 11b, into which the side bends 11e have already been machined, and adjust the positions in the forward and backward directions And the upper end portion 11c and the lower end portion 11m are bent at right angles.

As shown in the figure, the upper and lower end folding machines 40 include a frame 41, a cross bar 41b, a presser foot 41d, a lift block 42, a plurality of pressing feet 43, a stopper 44, A rotary plate 47b, a rotary plate driving means, a supporting structure 46a, and a folding roller 46d.

First, the frame 41 serves to horizontally support the pressing pedestal 41d, the cross bar 41b, and the supporting structure 46a, and has a roller conveyor 49 at the front and rear thereof. The roller conveyor 49 plays the role of horizontally supporting the outer plate 11a and the inner plate 11b on which the object to be processed having passed through the side forming machine 30, that is, the side bent portion 11e, do. In the following description, the arrow z direction will be referred to as a forward direction, and the opposite direction will be referred to as a backward direction.

The presser foot 41d is a rectangular plate having a predetermined thickness and passes through the outer plate 11a and the inner plate 11b (hereinafter referred to as an object to be processed) with the pressing foot 43. When the presser foot 43 is lowered Horizontally support the object. The object to be processed is held between the presser foot 41d and the pressing foot 43 and waits for the bending roller 46d to come up. Particularly, the front and rear edge portions 41f of the pressing surface 41d are parallel to each other and perpendicular to the moving direction of the object to be processed.

The elevating block 42 is a block-shaped member that ascends and descends at the vertical upper portion of the press table 41d, and has two rows of pressing legs 43 on its bottom surface. The detailed structure of the lift block 42 will be described later.

A cross bar 41b is fixed to an upper portion of the lift block 42. [ The cross bar 41b is a member horizontally fixed to the frame 41 and has two actuators 45 therein. The cylinder 45a of the actuator 45 is fixed inside the cross bar 41b and the piston rod 45b is extended to the vertical lower part and joined to the upper part of the lift block 42. [ It goes without saying that the elevator block 42 is raised and lowered by the operation of the actuator 45.

On the other hand, the elevating block 42 has two rows of holding slits 42b on its bottom surface. The holding slit 42b accommodates the insertion head 43a of the pressing foot 43 inside thereof as a space portion which extends in the width direction of the object to be processed, that is, the steel plate, and is parallel to and open to the lower side. In the interior of the holding slit 42b, a latching protrusion 42c for supporting the insertion head 43a is provided.

At both ends in the longitudinal direction of each holding slit 42b, there is formed an entrance passage 42a for opening the holding slit 42b forward and rearward of the elevation block 42. [ The entry passage 42a provides an entry / exit path for the pressing foot 43 to the holding slit 42b. The insertion head 43a of each pressing foot 43 may be fitted into the holding slit 42b through the entry and exit passage 42a and may be separated from the elevation block 42 through the entry and exit passage 42a .

A stopper fitting hole 42d is formed in the side of each of the access passages 42a. The stopper fitting hole 42d is as close as possible to the entry / exit passage 42a as an opening extending in the direction crossing the holding slit 42b.

The stopper fitting hole 42d serves to receive the stopper 44 inside the stopper 44 and to support the pressing foot 43 already inserted in the holding slit 42b inward. That is, the insertion head 43a of the pressing foot 43 is prevented from falling into the access passage 42a.

The stopper 44 has a plate shape and has a handle 44a at its outer end. The handling handle 44a is used when the worker inserts or pulls the stopper 44 into the stopper fitting groove 42d.

The pressing foot 43 is a member that is positioned in the longitudinal direction of the holding slit 42b, that is, the width direction of the object to be processed, while being sandwiched inside the two side holding slits 42b. The pressing foot 43 presses the object to be processed in a state in which the lowering of the lift block 42 is completed. The reason for pressing and fixing is to press the portion of the line to be bent (11f in FIG. 3B) when the tip of the object to be processed is bent upward.

The pressing foot 43 has an insertion head 43a that takes a substantially T-shaped side surface shape and is fitted in the holding slit 42b and a body 43e that integrally is formed at the lower portion of the insertion head 43a and presses down the iron plate . The bottom surface of the body 43e is a pressing surface portion 43b which is a surface on which the upper surface of the movable object supported by the pressing table 41d is pressed downward.

In addition, an inclined surface portion 43c is formed at one side of the body 43e. The inclined surface portion 43c is provided with an edge portion 43f at a portion where it faces the pressing surface portion 43b as a downward inclined portion. The edge portion 43f is an edge having an acute angle and coincides with the line to be bent 11f in a state in which the lifting block 42 is lowered. In addition, the edge portions 43f and the edge portions 41f of the pressing pedestal 41d are parallel to each other and positioned in the vertical direction.

Magnets 43d are fixed to both sides of the body 43e. The magnet 43d is a permanent magnet, and outputs the same polarity as the magnet of the neighboring body 43e. The magnet 43d forms a repulsive force between the body 43e and the body. The magnetic forces of the magnets fixed to all the bodies 43e are the same. By the action of the magnet 43d, the pressing foot 43 exchanges the magnetic force in the space of the holding slit 42b allowed by the stopper 44, and maintains a constant interval as much as possible.

Reference numeral 41c denotes a sensor. The sensor 41c serves to detect whether the object to be processed is stationary or not in the upper portion of the pressing table 41d. That is to say, it detects that the line to be bent 11f is correctly positioned between the edge portion 41f and the edge portion 43f.

When the sensor 41c detects that the position of the object to be processed is incorrect, the light-guiding lamp 41e is turned on. The worker corrects the position of the object to be processed through the light control lamp 41e. If the sensor 41c or the light-guiding lamp 41e is not provided, even if the line to be bent 11f is bent from the edge portion 43f in a slightly distorted state, the worker can not recognize it,

On the other hand, a supporting structural body 46a is installed on the lower portion of the pressing pedestal 41d so as to be movable up and down. The support structure 46a is for lifting and lowering the support structure 46a while supporting the folding roller 46d, the actuator 47c, and the rotation plate 47b. The structure of the support structure 46a can be changed at any time.

As shown in Fig. 5, a lower actuator 46c is provided on the lower side of the supporting structure 46a, and a vertical guider 46b is fixed on both ends of the supporting structure 46a. It is needless to say that the lower actuator 46c moves the support structure 46a up and down. The vertical guider 46b guides smooth up and down movement of the base structure 46a.

As shown in FIG. 9A, folding rollers 46d are provided on both sides of the backing structure 46a. The folding roller 46d is mutually parallel as a member rotatably horizontally supported at both ends thereof by a suitable bearing means. In particular, a virtual vertical line extending in the vertical direction from the corner portion 41f is spaced apart from the outer circumferential surface of the folding roller 46d by an interval t. Accordingly, when raising the supporting structure 46a as shown in Fig. 9D, the folding roller 46d can bend the leading end of the object upward at right angles.

However, in most cases, there is a certain clearance in the bearing, so that the above-mentioned interval is not necessary. Even if there is no gap t, the folding roller 46d folds up the distal end of the object upward, and the object is backward by the thickness of the object due to the clearance of the bearing.

The rotary plate 47b is rotatably supported on the support structure 46a through a rotary shaft 47a. The pivot shaft 47a and the supporting structure 46a can be connected to each other through any suitable supporting member. The rotary shaft 47a is parallel to the corner portion 41f and rotatably supports the rotary plate 47b in the direction of arrow b or vice versa.

Particularly, the end portion of the rotary plate 47b facing the pressing pedal 41d passes between the pressing pedal 41d and the pressing foot 43 in the state of rotating in the direction of the arrow b, (11e) to stop the movement of the object to be processed. The stop position of the object to be processed is a position corresponding to the edge portion 41f of the line to be lined 11f.

The actuator 47c is linked to the bottom surface of the base structure 46a and the rotary plate 47b through the support pin 47e and serves to rotate the rotary plate 47b. The rotary plate 47b is rotated by the operation of the actuator 47c in the direction of the arrow b and is rotated in the opposite direction to provide the same plane as the pressing table 41d.

The operation of the upper and lower end bending machines 40 will be sequentially described with reference to FIGS. 9A to 9D as follows.

First, the prepared object to be processed is moved in the direction of arrow z through the roller conveyor 49. It has been mentioned above that the object to be processed is the outer sheath 11a or the inner sheath 11b, and the side shear portion 11e is formed at the side end in the width direction. At this time, the left pivot plate 47b is kept horizontal and the right pivot plate 47b is pivoting in the direction of arrow b.

When the object to be processed is moved in the direction of arrow z, the leading end of the side bend portion 11e is caught by the rotary plate 47b and stops as shown in Fig. 9B. As shown in Fig. 9C, the bending portion 11g projects horizontally from the corner portion 41f of the pressing bar 41d in a state where the entry of the object to be processed has been completed.

Subsequently, the elevating block 42 is lowered to press-fix the workpiece with the pressing foot 43, and the supporting structure 46a is raised so that the bending roller 46d bends the bending portion 11g at right angles .

If the bending of the front end of the object to be processed, that is, the upper end of the object (11c in Fig. 2B) is completed, the folding roller 46d and the rotary plate 47b are lowered, ).

The object to be processed which has passed through the pressing foot 43 is located on the opposite roller conveyor 49. In this state, in order to bend the rear end portion of the object to be processed, i.e., the lower end portion (11m in Fig. 2B), the left rotary plate 47b of Fig. 9A is rotated in the direction of arrow c, and the rear end of the side bent portion lie The object to be processed is moved back until it is caught by the projection 47b. When the object to be processed is caught and stopped on the rotary plate 47b, the object to be processed is pressed by the pressing foot 43 and the bending roller 46d is raised to perform bending.

If the bending of the upper and lower ends of the object to be processed is completed through the above process, the workpiece is taken out from the upper and lower end bending machines 40 and loaded in a suitable place.

If the molding of the side bending portion 11e and the upper and lower breaking bending portions 11k with respect to the outer and inner plates 11a and 11b is completed through all the above steps, the inner plate 11b of the outer plate 11a is glued together. After the inner plate 11b is mounted on a flat die for gluing, the inner plate is coated with an adhesive and an interior material (not shown) is provided. The interior material includes a bracket and a supporting frame (not shown) as well as a heat insulating material. When the installation of the interior material is completed, cover the outside sheathing 11a.

Fig. 10 shows a fire door of the assembled state, that is, the gluing agent body 50. Fig.

As shown in Fig. 10, vertically separated curved portions 11k and side bent portions lie are located at the edges of the viscous nonwoven fabric 50. As shown in Fig. The upper and lower cut-away curved portions 11k and the side bent portions 11e are folded in the direction of the arrow to be folded to complete the assembly.

11A and 11B show a folding machine 60 for folding the bent portion. Figs. 11A and 11B are views for explaining the configuration and operation of the engaging device shown in Fig.

As shown in the drawing, the sorter 60 applied to the present embodiment includes a pressure holder 61 for pressing and fixing the goggle-forming substrate 50 in a state interposed therebetween, and a pressure holder 61 disposed on the side of the pressure holder 61 And a hydraulic motor 62 for operating the pair of rotary presses 63 and the rotary presses 63. [

The hydraulic motor 62 applies hydraulic pressure to the rotary press 63 to cause the rotary press 63 to rotate in the direction of the arrow f and the opposite direction. The rotary press 63 has a support shaft 63a parallel to each other and a pressing member 63b fixed to each support shaft 63a. The pressing member 63b is fixed to the support shaft 63a and rotates in the direction of the arrow f by the rotation of the support shaft 63a to fold the upper and lower cut-off curved portions 11k.

The rotary press 63 is also installed in the direction in which the side bending portion 11e is located, and the side bending portion 11e is also folded in the same manner.

When the folding through the connecting device 60 is completed, the operated fire door 91 is mounted on the pressing device 70 and the pressing process is performed.

12 is a side view schematically showing the structure of the presser 70 shown in Fig.

The pressing unit 70 includes a frame 71, a plurality of pressing plates 72 supported by the frame 71 and lifted and lowered in a horizontal state and a pressing actuator 73 for pressing down the uppermost pressing plate 72 And heating means (not shown).

Referring to the drawings, it can be seen that the fire door 91 is sandwiched between the compression plates 72. The fire door 91 is pressed by the pressing actuator 72 in a state of being fitted in the pressing plate 72. At this time, the heating means is operated to heat the fire door (91).

The operation of the presser 70 allows the fixing of the outer plate 11a and the inner plate 11b to the interior material in the fire door 91 to be more stably maintained and the dimensions of the fire door 91 in the thickness direction are made uniform.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10: Fire door manufacturing apparatus 11: Steel plate 11a: Shell plate
11b: inner plate 11c: upper end portion 11d: perforated hole
11e: Side bent portion 11f: Line to be bent 11g:
11k: Upper and lower cutout curved portion 11m: Lower end portion 11n: One end portion
11p: other end 11r: groove 13: steel plate feeder
20: steel plate cutting machine 21: XY table 25: cutting machine
30: Side forming machine 31: Forming roller 33: Die
34: entry guider 40: upper and lower end bending machine 41: frame
41b: a cross bar 41c: a sensor 41d:
41e: a light-guiding lamp 41f: a corner portion 42: a lift block
42a: entry / exit passage 42b: holding slit 42c:
42d: stopper fitting hole 43: pressing foot 43a: insertion head
43b: pressing surface portion 43c: inclined surface portion 43d: magnet
43e: body 43f: edge portion 44: stopper
44a: Handling handle 45: Pressurizing actuator 45a: Cylinder
45b: piston rod 46: bending forming portion 46a:
46b: vertical guider 46c: lower actuator 46d: folding roller
47: Feed guider 47a: Pivot shaft 47b: Pivot plate
47c: actuator 47e: support pin 49: roller conveyor
50: abrading plate 60: engaging device 61: pressure holder
62: Hydraulic motor 63: Rotary press 63a:
63b: pressing member 70: pressing device 71: frame
72: compression plate 73: compression actuator 73a: cylinder
73b: piston rod 91: fire door

Claims (4)

delete delete A steel plate cutting machine for receiving a rectangular steel plate having parallel upper and lower end portions and both end portions and trimming the edge portion of the steel plate into a designed shape and puncturing a necessary hole;
A side forming machine for horizontally transferring the steel plate after cutting by the steel plate cutting machine and forming a side bent portion at both side ends of the steel plate;
The iron plate having the side bending portion processed therein is passed through the inside of the iron plate, and the position is adjusted in the forward direction and the backward direction, and the upper and lower ends are successively bent. The iron plate is shaped like a rectangle, A frame for horizontally supporting the presser bar, a lift block installed on the upper portion of the presser bar so as to be able to move up and down, A plurality of pressing feet arranged in the width direction of the iron plate and having an edge portion that is aligned with the corner portion of the pressing pad in a completely lowered state, a stopper for restricting the movement of the pressing foot, In a state of being spaced apart from the edge portion of the pressing band by a predetermined distance and rotating upward, And a pivoting plate driving means for driving the pivoting plate. The supporting structure for supporting the pivoting plate driving means is provided at a lower portion of the pivoting plate and supports the pivoting plate driving means. And a folding roller which is supported by the support structure and extends horizontally and which rises to the vertical portion in a state in which the iron plate is sandwiched between the pressing foot and the platen to thereby upwardly bend the pressing foot and the portion extending to the outside of the platen, ≪ / RTI >
The elevating block includes: A pair of holding slits extending in the width direction of the steel plate and parallel to each other and opened to the bottom, and an opening / closing passage for opening the holding slits forward and rearward of the elevating block and providing an access path for the pressing foot to the holding slit And a stopper insertion hole extending in a direction crossing the holding slit, the stopper insertion hole being configured to receive the stopper, the stopper insertion hole being located at a side of the entry / exit passage,
The pressing foot comprising: An insertion head inserted into the holding slit and slidable along a longitudinal direction of the holding slit and a body having a pressing surface integrally formed at a lower portion of the insertion head and pressing down the iron plate,
And a magnet for exchanging magnetic forces between neighboring pressing foots on both sides of each pressing foot. The method of claim 3,
Stopper;
Wherein the inserting head is supported by the holding slit while being inserted into the stopper fitting hole so as to block the insertion head from being pushed out toward the entrance and exit passage and a handle on the outside of which the worker grips the hand.

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