CN113290164B

CN113290164B - Fire-proof valve frame forming machine

Info

Publication number: CN113290164B
Application number: CN202110648704.XA
Authority: CN
Inventors: 钟文军; 刘春胜; 钟文勇
Original assignee: Shenzhen Tie Dragon Mechanical & Electrical Industry Co ltd
Current assignee: Shenzhen Tie Dragon Mechanical & Electrical Industry Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2023-02-28
Anticipated expiration: 2041-06-10
Also published as: CN113290164A

Abstract

The invention relates to a fire-proof valve frame forming machine which comprises a base, wherein a conveying table is arranged on the base, an unreeling frame is arranged on the conveying table, and a bearing device for bearing a steel plate reel is arranged on the unreeling frame; the conveying table is provided with a side edge bending device, and the bending angle of the side edge bending device is sequentially increased from the feeding end of the conveying table to the discharging end of the conveying table; the side edge bending device comprises a plurality of upper rollers and lower rollers, bending parts are arranged at two ends of the upper rollers, and the bending angles of the bending parts of the upper rollers are sequentially increased from the feeding end of the conveying table to the discharging end of the conveying table; the discharge end of the conveying table is provided with a forming bending device; the forming and bending device comprises a bearing platform and a abutting block arranged above the bearing platform, and the conveying platform is provided with a turnover assembly used for driving the bearing platform to turn over. The conveying table is also provided with a lifting component for driving the abutting block to lift. The invention not only improves the automation degree of the production and molding of the fire-proof valve frame, but also reduces manpower and material resources and improves the production efficiency.

Description

Fire-proof valve frame forming machine

Technical Field

The invention relates to the field of production equipment of fire valves, in particular to a fire valve frame forming machine.

Background

Fire dampers have been widely used in ventilation and air conditioning systems and mechanical smoke exhaust systems in high-rise buildings, public buildings and underground buildings.

The fire valve frame in the related art mainly comprises four outer frame plates which are connected end to end, and two sides of each outer frame plate are bent towards the outer side of the fire valve frame to form frame side plates. In the production of the fire damper frame, a steel plate bending device is generally adopted to bend and form a steel plate, so that an outer frame plate of the fire damper frame is formed, and the working procedures of stamping, shearing, welding and the like are performed according to actual requirements.

The steel plate bending equipment in the related art generally needs to cooperate with manual bending operation. When bending is carried out, after one side of the steel plate is bent by the bending equipment to form a frame side plate, the worker rotates and adjusts the position of the steel plate, so that the other side of the steel plate is bent by the bending equipment, the steel plate is bent to form an independent outer frame plate, and then the four outer frame plates are welded to form a frame. The production process of the fire damper frame in the related art is not only low in automation degree, but also needs to consume more manpower and material resources, so that the production efficiency is low.

Disclosure of Invention

The invention provides a fire damper frame forming machine, which aims to improve the phenomena that the automation degree of the production process of the conventional fire damper frame is low and more manpower and material resources are consumed.

The application provides a fire prevention valve frame make-up machine adopts following technical scheme:

a fire damper frame forming machine comprises a base, wherein a conveying platform used for conveying steel plates is arranged on the base, an unreeling frame used for placing steel plate reels is arranged at the feed end of the conveying platform, and a bearing device used for bearing the steel plate reels is arranged on the unreeling frame; the conveying table is provided with a side edge bending device for bending two sides of the steel plate so as to bend the two sides of the steel plate to form a frame side plate, and the bending angles of the side edge bending device are sequentially increased from the feeding end of the conveying table to the discharging end of the conveying table; the discharge end of the conveying table is provided with a forming and bending device for bending the steel plate; the side edge bending device comprises a plurality of upper rollers and lower rollers which are rotatably arranged on the conveying table, the upper rollers and the lower rollers are oppositely arranged, a gap for a steel plate to pass through is formed between the upper rollers and the lower rollers, bending parts for bending the edge of the steel plate are arranged at two ends of each upper roller, and the bending angles of the bending parts of the upper rollers are sequentially increased from the feeding end of the conveying table to the discharging end of the conveying table; the shaping bending device including rotate set up in carry the plummer of the discharge end of platform and set up with liftable in the tight piece of support of the top of plummer, the plummer with support and be formed with the clearance that supplies the steel sheet to wear to establish between the tight piece, carry and be provided with on the bench and be used for the drive the plummer is to the upset subassembly of supporting one side upset of tight piece, carry and still be provided with on the bench and be used for the drive support the lifting unit that tight piece goes up and down.

Through adopting above-mentioned technical scheme, when producing fire prevention valve frame, at first place the coil-like steel sheet on unreeling the device that bears of frame, draw the one end that the steel sheet was rolled up to the delivery table, carry the steel sheet through the delivery table. And in the process that the steel plate passes through the conveying table, the two sides of the steel plate are bent through the side bending device, so that the two sides of the steel plate are bent to form the side plates of the frame. In the concrete in-process of bending, the steel sheet passes from the clearance between last roller and the lower roll, utilize the difference in height between last roller and the portion of bending, thereby when making the steel sheet pass between last roller and the lower roll, the both sides of steel sheet are pushed down by the portion of bending at last roller both ends, thereby make the both sides of steel sheet turn over the book downwards, along with the continuous preceding transport of steel sheet, the angle of bending at the both ends of going up the roller crescent, thereby make the angle of turning over of the both sides of steel sheet crescent, the both sides that make the steel sheet from this buckle and form the frame curb plate. The steel plate bent by the bent side edge bending device is conveyed to the discharge end of the conveying table, the steel plate is tightly abutted to the bearing table through the abutting block at the discharge end of the conveying table, then the bearing table is driven to overturn towards one side of the abutting block through the overturning assembly, and the steel plate is pushed to overturn upwards, so that the steel plate is bent in the length direction. The steel plate is bent for many times through the output end of the conveying table, so that the steel plate is bent to form a frame, the steel plate is not required to be manually rotated for many times and the position of the steel plate is adjusted to be bent, the automation degree of producing a fireproof valve frame is improved, manpower and material resources are reduced, and the production efficiency is improved.

Preferably, the upset subassembly including rotate set up in pivot on the base, connect in the upset seat of pivot and be used for driving upset seat pivoted first cylinder, the plummer connect in one side that the upset seat is close to the pivot, the piston rod of first cylinder articulate in one side that the pivot was kept away from to the upset seat.

Through adopting above-mentioned technical scheme, when buckling the steel sheet, revolute the upset of axial abutting piece one side through first cylinder drive upset seat, during the upset of upset seat, drive and bear the upset of seat to the one end that promotes the steel sheet is to the upset of one side abutting piece, so that the steel sheet is bent, buckles in succession through the steel sheet that will carry to the discharge end of carrying the platform, makes the steel sheet from this and is buckled and form the frame.

Preferably, the lifting assembly comprises a second cylinder arranged on the base, and a piston rod of the second cylinder is connected to the abutting block.

Through adopting above-mentioned technical scheme, the second cylinder drive supports tight piece and goes up and down to the difficult off normal that takes place of steel sheet when making the steel sheet of buckling.

Preferably, the conveying table is further provided with a limiting block for limiting the descending position of the abutting block, and the limiting block is located at the discharging end of the conveying table.

By adopting the technical scheme, the limiting block and the abutting block are matched to abut against the steel plate, so that the bending process of the steel plate is more stable.

Preferably, the side bending device still including set up in carry the bench turn over an edging, turn over an edging along carry the direction of delivery of platform to extend, turn over an edging on the edging and be provided with the hem guide surface that is used for bending the border of frame curb plate, the hem angle of bending of guide surface is crescent from the feed end of carrying the platform to the discharge end of carrying the platform, carry the bench still to be provided with spacing, spacing sets up along the direction of delivery of carrying the platform, spacing with be formed with the clearance that supplies the frame curb plate to pass between the an edging.

By adopting the technical scheme, when the frame side plate formed by bending the bending part of the upper roller passes through the gap between the limiting strip and the inward-turning edge folding strip, the edge folding guide surface on the inward-turning edge folding strip gradually guides the edge of the frame side plate to turn over, and the turning angle of the edge of the frame side plate is gradually increased along with the conveying of the steel plate, so that the edge of the frame side plate is bent and formed.

Preferably, the bearing device comprises a bearing shaft with one end connected to the unreeling frame and a rotary disc arranged on the bearing shaft in a rotating mode, a rotating sleeve is arranged on the bearing shaft in a rotating mode and can slide relative to the bearing shaft, a plurality of groups of tensioning arms used for tightly abutting against the steel plate coil are arranged on the side wall of the rotating sleeve, one end of each tensioning arm is connected to the rotary disc in a sliding mode, and a driving assembly used for driving the rotating sleeve to slide relative to the bearing shaft is arranged on the bearing shaft so that the tensioning arms tightly abut against the inner side of the steel plate coil.

Through adopting above-mentioned technical scheme, when fixed steel sheet book, rotate the cover by drive assembly drive and carry the axle removal relatively to make the tensioning arm open, closely contradict the steel sheet book until the tensioning arm, through the inboard that the cooperation of multiunit tensioning arm was contradicted the steel sheet book, thereby the realization is fixed in the rotation with the steel sheet book and sheathes in.

Preferably, the tensioning arm comprises a hinge rod with one end hinged to the rotating sleeve and a tensioning block hinged to the other end of the hinge rod, and one end of the tensioning block is connected to the rotating disc in a sliding mode.

Through adopting above-mentioned technical scheme, when fixed steel sheet book, rotate the cover through the drive assembly drive to make and rotate the cover and remove to one side of carousel, rotate the in-process that the cover removed, the pin joint of hinge bar and rotation cover shortens gradually to the distance between the pin joint of hinge bar and tensioning piece, thereby makes the hinge bar promote the tensioning piece and opens to the one side of keeping away from the rotation cover, supports the inboard that the steel sheet was rolled up from this, realizes the fixed of rolling up the steel sheet.

Preferably, the driving assembly comprises a threaded sleeve rotatably arranged at one end, far away from the turntable, of the bearing shaft, the side wall of the bearing shaft is provided with external threads in threaded fit with the threaded sleeve, and one end, far away from the turntable, of the rotating sleeve is provided with an abutting end face for abutting against the threaded sleeve.

Through adopting above-mentioned technical scheme, when fixed steel sheet book, through rotating the thread bush to make the thread bush move to one side of carousel, the in-process that the thread bush removed promotes to rotate cover synchronous motion, the in-process that rotates the cover and remove, the hinge bar shortens gradually with the pin joint of rotating the cover to the distance between the pin joint of hinge bar and tensioning piece, thereby makes the hinge bar promote the tensioning piece and open to the one side of keeping away from rotating the cover, supports the inboard that tight steel sheet rolled up from this, realizes the fixed of rolling up the steel sheet.

Preferably, the tensioning block is kept away from the one end of carousel is provided with the gag lever post, the gag lever post be connected with slide connect in the slider of tensioning block, be provided with between tensioning block and the slider and be used for fixing the fixed subassembly of gag lever post.

Through adopting above-mentioned technical scheme, the gag lever post plays spacing effect to the steel sheet book to make the process that the steel sheet book unreeled more stable.

Preferably, the fixed subassembly is including offering in the screw hole of the lateral wall of slider and screw-thread fit in the puller bolt of screw hole, the one end butt of puller bolt in the tensioning piece.

Through adopting above-mentioned technical scheme to in fix the slider, thereby realize fixing the gag lever post.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the steel sheet is through the portion of bending and the cooperation of lower roll at the in-process of carrying at the both ends of roller, thereby bend the both sides of steel sheet and form the frame curb plate, and through spacing and the cooperation of the enstrophe turn-over curved strip, thereby bend the border of frame curb plate and form the enstrophe, bend the shaping bending device of the discharge end through the transport platform at last and bend the steel sheet four times, thereby make the steel sheet bent and form the fire prevention valve frame, whole production process need not the artifical position of rotating and adjusting the steel sheet, the fashioned degree of automation of fire prevention valve frame production has been improved, manpower and materials have been reduced, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of a fire damper frame;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the structure of the carrying device of the present invention;

FIG. 4 is a schematic view of a part of the structure of the feed end of the table in the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic view of the side bending apparatus of the present invention;

FIG. 7 is a partial cross-sectional view of a delivery table of the present invention;

fig. 8 is an enlarged view of portion B of fig. 7;

fig. 9 is a schematic structural view for embodying the forming and bending apparatus of the present invention.

Description of the reference numerals: 1. a fire damper frame; 101. an outer frame plate; 102. a frame side plate; 103. inward flanging; 2. a base; 3. a conveying table; 4. rolling the steel plate; 5. unwinding the frame; 6. a carrier shaft; 7. a turntable; 71. a chute; 8. rotating the sleeve; 9. connecting blocks; 10. a hinged lever; 11. a tensioning block; 12. a limit bolt; 13. a slider; 14. tightening the bolt; 15. a limiting rod; 16. a threaded sleeve; 17. a drive rod; 18. an upper power roller; 19. a lower power roller; 20. a cutting table; 21. a tool holder; 22. cutting a knife; 23. an upper roll; 231. a bending part; 24. a lower roll; 25. folding the edge strips inwards; 251. folding the guide surface; 26. a limiting strip; 28. a turning seat; 29. a first cylinder; 30. a bearing platform; 31. a propping block; 32. a lifting groove; 33. a lifting lug; 34. a second cylinder; 35. and a limiting block.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

A fire prevention valve frame forming machine, refer to fig. 1, wherein, fire prevention valve frame 1 includes four outer deckle boards 101 end to end, and the both sides of every outer deckle board 101 are all bent to the outside of fire prevention valve frame 1 and are formed with frame curb plate 102, and the border of frame curb plate 102 is bent and is formed with inside flanging 103.

Referring to fig. 2, the frame forming machine includes a base 2, a conveying table 3 for conveying a steel plate is installed on the base 2, one end of the conveying table 3 is a feeding end, and the other end is a discharging end. The feeding end of the conveying platform 3 is provided with an unreeling frame 5 for placing a rolled steel plate coil 4, the unreeling frame 5 is borne on the ground, and the unreeling frame 5 is provided with a bearing device for bearing the steel plate coil 4.

In particular, with reference to fig. 2 and 3, the carrying means comprise a carrying shaft 6 horizontally mounted on the unwinding frame 5 and a turntable 7 rotatably mounted on the carrying shaft 6. In this embodiment, one end of the bearing shaft 6 is fixedly connected to the unwinding frame 5, and the other end of the bearing shaft 6 passes through the center of the turntable 7. The carrier shaft 6 is connected to the turntable 7 via a bearing, so that the turntable 7 can rotate relative to the carrier shaft 6.

Referring to fig. 3, a rotating sleeve 8 is sleeved outside the bearing shaft 6, the rotating sleeve 8 is rotatably connected with the bearing shaft 6 through a bearing, and the rotating sleeve 8 can slide along the axial length direction of the bearing shaft 6. Specifically, the rotating sleeve 8 is provided with a plurality of bearings (not shown in the figure) inside, and the outer rings of the bearings are welded to the rotating sleeve 8. Bear axle 6 and pass the inner circle of bearing, and the inner circle of bearing is equipped with the bump (not shown in the figure), bears the lateral wall of axle 6 and offers the strip-shaped groove (not shown in the figure) that supplies the bump to slide along the axial length direction that bears axle 6, makes consequently to rotate cover 8 and can bear axle 6 to slide relatively in the axial length direction that bears axle 6, and can also bear axle 6 to rotate relatively in circumference.

In addition, referring to fig. 3, the side wall of the rotating sleeve 8 is provided with four sets of tensioning arms, which are uniformly distributed along the circumferential direction of the rotating sleeve 8.

Specifically, referring to fig. 3, the tensioning arm includes a connecting block 9 welded to a side wall of the rotating sleeve 8, a hinge rod 10 having one end hinged to the connecting block 9, and a tensioning block 11 hinged to the other end of the hinge rod 10, wherein the tensioning block 11 is configured to abut against an inner side of the steel sheet roll 4. In this embodiment, there are two hinge rods 10, and the two hinge rods 10, the tensioning block 11 and the connecting block 9 form a parallelogram structure. Meanwhile, the hinge rod 10 and the connecting block 9 form an acute angle therebetween, and the acute angle is toward the turntable 7.

Referring to fig. 3, one end of the tension block 11 is slidably coupled to the turntable 7. Specifically, the turntable 7 is provided with a sliding groove 71, and the sliding groove 71 is formed along the radial direction of the turntable 7. One end of the tensioning block 11 close to the turntable 7 is provided with a sliding part, and the sliding part is connected with the sliding groove 71 in a sliding manner. In this embodiment, the sliding portion penetrates through the sliding groove 71, the sliding portion is provided with two limiting bolts 12 in threaded connection, a limiting gap is formed between nuts of the two limiting bolts 12, and the width of the limiting gap is slightly larger than the thickness of the turntable 7. After the sliding part of the tensioning block 11 passes through the sliding groove 71, the two limiting bolts 12 are respectively positioned at two sides of the turntable 7, so as to limit the tensioning block 11.

Referring to fig. 3, one end of the tensioning block 11, which is far away from the rotary table 7, is connected with a sliding block 13 in a sliding manner, a threaded hole is formed in the sliding block 13, and the threaded hole penetrates through two sides of the sliding block 13. The threaded hole is in threaded fit with a puller bolt 14 for pulling the tension block 11. The welding has gag lever post 15 on the slider 13, and gag lever post 15 and carousel 7 cooperation to two terminal surfaces of rolling up 4 to the steel sheet play spacing effect, thereby the steel sheet that makes roll up 4 at the in-process of unreeling, difficult emergence off normal.

With continued reference to fig. 3, an end of the bearing shaft 6 away from the turntable 7 is sleeved with a threaded sleeve 16, and a side wall of the bearing shaft 6 is provided with an external thread which is in threaded fit with the threaded sleeve 16. The end surface of the rotating sleeve 8, which is far away from one end of the rotating disc 7, is an abutting end surface, and the abutting end surface is used for abutting the threaded sleeve 16. By rotating the threaded sleeve 16, the threaded sleeve 16 pushes the rotating sleeve 8 to move to a side close to the rotating disc 7, so that the distance from the hinge point of the hinge rod 10 and the connecting block 9 to the hinge point of the hinge rod 10 and the tensioning block 11 is gradually reduced, and the hinge rod 10 pushes the tensioning block 11 to be gradually expanded in a direction away from the rotating sleeve 8, so as to tightly abut against the inner side of the steel plate roll 4. To facilitate the rotation of the threaded sleeve 16, a drive rod 17 is therefore welded to the side wall of the threaded sleeve 16.

After the rolled steel plate coil 4 is placed on the unwinding frame 5, the steel plate coil 4 is tensioned through four groups of tensioning arms on the rotating sleeve 8, so that the steel plate coil 4 and the rotating sleeve 8 are kept relatively fixed, the steel plate coil 4 can rotate along with the rotation of the rotating sleeve 8, and the unwinding and unwinding operations can be realized when the steel plate coil 4 rotates.

Referring to fig. 4, power rollers for providing conveying power for the steel plate are rotatably mounted at the feed end of the conveying table 3, and the power rollers include an upper power roller 18 and a lower power roller 19, and a gap for the steel plate to pass through is formed between the upper power roller 18 and the lower power roller 19. After one end of the coil 4 passes through the gap between the upper power roller 18 and the lower power roller 19, the upper power roller 18 and the lower power roller 19 cooperate with each other to supply power to the steel plate passing through the gap, thereby conveying the steel plate forward. In the process of forward conveying of the steel plate, the steel plate coil 4 is pulled to rotate, so that the steel plate coil 4 is continuously uncoiled, and the steel plate can be continuously conveyed forward.

Referring to fig. 4 and 5, a cutting table 20 is further installed at one end of the conveying table 3 close to the feeding end, and the cutting table 20 is used for bearing a steel plate. The conveying table 3 is provided with a tool rest 21, the tool rest 21 is provided with a cutting knife 22 for cutting the steel plate in a lifting way, the cutting knife 22 is positioned above the cutting table 20, and the cutting knife 22 is arranged on the conveying table 3 in a lifting way. In this embodiment, the cutting knife 22 is driven to lift by a cylinder, so as to transversely cut the steel plate, so as to form a punching notch on the steel plate, thereby facilitating the bending of the steel plate in the later period. In this embodiment, the two cutting blades 22 are provided, and the two cutting blades 22 are arranged on both sides of the conveying table 3 in an axisymmetric manner in the conveying direction of the conveying table 3 to cut both sides of the steel plate in the lateral direction to form the punched-out portion.

Referring to fig. 6 and 7, the conveying table 3 is provided with a side bending device for bending two long sides of the steel plate, and the side bending device bends two sides of the steel plate during the forward conveying process of the steel plate, so that the two sides of the steel plate are bent to form the frame side plate 102.

Specifically, referring to fig. 6 and 7, the side edge bending device includes five upper rollers 23 rotatably mounted on the conveying table 3, and the five upper rollers 23 are distributed at equal intervals along the conveying direction of the conveying table 3. A lower roller 24 is correspondingly arranged below each upper roller 23, and the lower rollers 24 and the upper rollers 23 have the same size and the same number. A gap through which the steel strip passes is formed between the lower roller 24 and the upper roller 23.

Both ends of the upper roller 23 are integrally formed with bent portions 231, and the bent portions 231 are used for abutting against the side edges of the steel plates, so that the side edges of the steel plates are turned downwards, and the side edges of the steel plates are bent to form the frame side plates 102.

Specifically, referring to fig. 6 and 7, the bending portion 231 is substantially tapered, the bending portion 231 has a large end and a small end, the small end of the bending portion 231 is connected to the end of each upper roller 23, and the radius of the small end of each upper roller 23 is gradually increased. In this embodiment, the upper rollers 23 are sequentially divided into the first upper roller 23 and the second upper roller 23 along the conveying direction of the conveying table 3. The fifth upper roller 23, wherein the radius of the small end of the bending portion 231 of the second upper roller 23 is greater than the radius of the small end of the first upper roller 23, the radius of the small end of the bending portion 231 of the fifth upper roller 23 is greater than the radius of the small end of the fourth upper roller 23, and so on, so that the bent angle of the side plate of the steel plate is gradually increased. In this embodiment, the radius of the small end of the fifth upper roller 23 is equal to the radius of the large end, and the bent portion 231 has a cylindrical shape.

When two long sides of the steel sheet of buckling, the steel sheet is from the feed end input of carrying platform 3, and pass from the clearance between last roller 23 and the lower roll 24, when the steel sheet passed the clearance between last roller 23 and the lower roll 24, the lower roll 24 played the effect of bearing to the steel sheet, and the portion 231 of bending of the tip of going up roller 23 then can support the side of pressing the steel sheet downwards, so that the side of steel sheet takes place to turn over downwards, because the tip radius of the portion 231 of bending on a plurality of last rollers 23 increases gradually, make the steel sheet at the in-process of carrying forward, the angle of being bent of the side of steel sheet constantly increases, form frame curb plate 102 until the side of steel sheet is bent.

Referring to fig. 7 and 8, the side bending device further includes an inward flanging strip 25, and the inward flanging strip 25 is used for bending the edge of the frame side plate 102, so that the edge of the frame side plate 102 is bent to form an inward flanging 103. Specifically, the inward-turned edge folding strip 25 is arranged along the conveying direction of the conveying table 3, and the inward-turned edge folding strip 25 extends from the position of the fourth upper roller 23 to the discharging end of the conveying table 3.

Referring to fig. 7 and 8, a folding guide surface 251 for abutting against the edge of the frame side plate 102 is provided on one side of the inward folding edge strip 25 facing the upper roller 23, the folding guide surface 251 is an inclined surface, and an inclination angle of the folding guide surface 251 is gradually reduced from one end close to the fourth upper roller 23 to one end far from the fourth upper roller 23. In this embodiment, the inclination angle of the edge folding guide surface 251 at the end of the inward folding edge strip 25 close to the fourth upper roller 23 is 45 °, and the inclination angle of the end of the inward folding edge strip 25 far from the fourth roller is 0 °, that is, the cross section of the end of the inward folding edge strip 25 close to the fourth roller is triangular, and the cross section of the end of the inward folding edge strip 25 far from the fourth roller is square.

Referring to fig. 7 and 8, a limiting strip 26 matched with the inward-turning edge strip 25 is further mounted on the conveying table 3, the limiting strip 26 is arranged along the length direction of the inward-turning edge strip 25, and a gap for the frame side plate 102 to pass through is formed between the limiting strip 26 and the inward-turning edge strip 25.

After the side edge of the steel plate is bent to form the frame side plate 102 through the bending part 231 of the upper roller 23, the frame side plate 102 passes through the gap between the limiting strip 26 and the inward-turned flanging strip 25, and in the process that the frame side plate 102 passes through the gap, the flanging guide surface 251 of the inward-turned flanging strip 25 guides the edge of the frame side plate 102, so that the edge of the frame side plate 102 is gradually turned over to one side of the central line of the conveying table 3, and the inward-turned edge 103 is formed.

Referring to fig. 9, the discharge end of the conveying table 3 is provided with a forming and bending device for bending and forming the steel plate so that the steel plate forms a frame.

Specifically, the forming and bending device comprises a rotating shaft rotatably mounted at the discharge end of the conveying table 3, a turning seat 28 connected with the rotating shaft, and a first air cylinder 29 for driving the turning seat 28 to rotate. Wherein, first cylinder 29 is located the below of carrying platform 3, and the piston rod of first cylinder 29 articulates in the one end that the pivot was kept away from to upset seat 28, and the cylinder body of first cylinder 29 articulates in base 2.

Referring to fig. 9, a bearing platform 30 for bearing a steel plate is connected to one side of the turnover seat 28 close to the rotating shaft, a pressing block 31 is installed at the discharge end of the conveying platform 3 in a lifting manner, the pressing block 31 is arranged opposite to the bearing platform 30, the pressing block 31 is located above the bearing platform 30, and a gap for the steel plate to pass through is formed between the pressing block 31 and the bearing platform 30.

Referring to fig. 9, lifting grooves 32 are vertically formed in both sides of the conveying table 3, and lifting lugs 33 slidably connected with the lifting grooves 32 are welded to both sides of the abutting block 31. Two second air cylinders 34 are also vertically arranged on the base 2, and the two second air cylinders 34 are respectively positioned at two sides of the conveying platform 3. In this embodiment, the two second cylinders 34 are synchronous cylinders, and piston rods of the two second cylinders 34 are respectively connected to the two lifting lugs 33.

When the steel plate is bent, the abutting block 31 is driven to descend through the second air cylinder 34 until the abutting block 31 abuts against the steel plate, then the overturning seat 28 is driven to overturn upwards around the rotating shaft through the first air cylinder 29, so that the bearing table 30 is driven to overturn, the steel plate is driven to be bent upwards, the steel plate conveyed is bent for four times, and the steel plate is bent to form the fire valve frame 1.

In addition, refer to fig. 9, carry the discharge end of platform 3 still to be fixed with stopper 35, and stopper 35 is two, and two stoppers 35 are located plummer 30's both sides respectively, and two stoppers 35 highly be a little higher than plummer 30's height, thereby restrict the decline position of supporting piece 31 from this, thereby prevent to support that the piece 31 excessively descends and destroy the steel sheet.

The implementation principle of the application is as follows: when the fire damper frame 1 is produced, firstly, a rolled steel plate is carried on the rotating sleeve 8 of the unreeling frame 5, and the threaded sleeve 16 is rotated, so that the threaded sleeve 16 pushes the rotating sleeve 8 to move towards one side of the rotating disc 7, and therefore, four groups of tensioning arms on the rotating sleeve 8 tension the inner side of the steel plate roll 4, so that the steel plate roll 4 and the rotating sleeve 8 are fixed relatively, and the steel plate roll 4 can rotate along with the rotation of the rotating sleeve 8.

One end of the coil of sheet steel 4 is then pulled towards the conveyor table 3 and the upper and lower

powered rollers

18, 19 at the discharge end of the conveyor table 3 cooperate to provide power to the sheet steel and thereby convey it forward. In the process of pulling one end of the steel plate coil 4 to convey forwards, the steel plate coil 4 rotates due to the pulling action, so that the steel plate is continuously uncoiled, and the steel plate can be continuously conveyed forwards.

In the process that the steel plate passes through the conveying table 3, the two sides of the steel plate are bent by the side bending device, so that the two sides of the steel plate are bent to form the frame side plate 102. The concrete process of bending does, the steel sheet passes from the clearance between last roller 23 and the lower roll 24, utilize the difference in height between last roller 23 and the portion 231 of bending, thereby when making the steel sheet pass between last roller 23 and the lower roll 24, the both sides of steel sheet are pushed down by the portion 231 of bending at last roller 23 both ends, thereby the both sides that make the steel sheet turn over the book downwards, along with constantly carrying forward of steel sheet, the angle of bending at the both ends of going up roller 23 crescent, thereby make the angle of turning over of the both sides of steel sheet crescent, form frame curb plate 102 by making the both sides of steel sheet buckle from this.

The steel plate bent by the bent side bending device is continuously conveyed forwards, and the edge between the frame side plates 102 passing through the inward-turning edge strips 25 and the limiting strips 26 is bent through the matching of the inward-turning edge strips 25 and the limiting strips 26 on the conveying table 3, so that the edge of the frame side plates 102 is bent to form inward-turning edges 103.

The steel plate which is bent to form the inward flange 103 is continuously conveyed to the discharge end of the conveying table 3, and the steel plate is bent by the forming and bending device so that the steel plate is bent to form the fire damper frame 1. Specifically, when bending the steel sheet, at first through the decline of second cylinder 34 drive abutting block 31, until abutting block 31 with the steel sheet support tightly, then overturn in the gyration axis upwards through first cylinder 29 drive upset seat 28 to drive plummer 30 upset, drive the steel sheet and upwards buckle from this, carry out quartic bending through the steel sheet that will carry and come, thereby make the steel sheet by the shaping fire prevention valve frame 1 that becomes of bending.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a fire prevention valve frame make-up machine, includes base (2), be provided with on base (2) and be used for carrying the transport platform (3) of steel sheet, its characterized in that: an unwinding frame (5) for placing the steel plate coil (4) is arranged at the feeding end of the conveying table (3), and a bearing device for bearing the steel plate coil (4) is arranged on the unwinding frame (5); the conveying table (3) is provided with a side edge bending device for bending two sides of the steel plate so as to bend the two sides of the steel plate to form a frame side plate (102), and the bending angles of the side edge bending device are sequentially increased from the feed end of the conveying table (3) to the discharge end of the conveying table (3); the discharge end of the conveying table (3) is provided with a forming and bending device for bending the steel plate;

the side edge bending device comprises a plurality of upper rollers (23) and lower rollers (24) which are rotatably arranged on the conveying table (3), the upper rollers (23) and the lower rollers (24) are oppositely arranged, a gap for a steel plate to pass through is arranged between the upper rollers (23) and the lower rollers (24), bending parts (231) used for bending the edge of the steel plate are arranged at two ends of each upper roller (23), and the bending angles of the bending parts (231) of the upper rollers (23) are sequentially increased from the feeding end of the conveying table (3) to the discharging end of the conveying table (3);

the side edge bending device further comprises an inward-turning edge strip (25) arranged on the conveying table (3), the inward-turning edge strip (25) extends along the conveying direction of the conveying table (3), a folding edge guide surface (251) used for bending the edge of the frame side plate (102) is arranged on the inward-turning edge strip (25), the bending angle of the folding edge guide surface (251) is gradually increased from the feeding end of the conveying table (3) to the discharging end of the conveying table (3), a limiting strip (26) is further arranged on the conveying table (3), the limiting strip (26) is arranged along the conveying direction of the conveying table (3), and a gap for the frame side plate (102) to pass through is formed between the limiting strip (26) and the inward-turning edge strip (25);

shaping bending device including rotate set up in carry plummer (30) of the discharge end of platform (3) and set up with liftable in support tight piece (31) of the top of plummer (30), plummer (30) with support and be formed with the clearance that supplies the steel sheet to wear to establish between tight piece (31), be provided with on carrying platform (3) and be used for the drive plummer (30) is to the upset subassembly of the one side upset of supporting tight piece (31), still be provided with on carrying platform (3) and be used for the drive the lifting unit that supports tight piece (31) and go up and down.

2. A fire damper frame molding machine as claimed in claim 1, wherein: the upset subassembly including rotate set up in pivot (27) on base (2), connect in upset seat (28) of pivot (27) and be used for driving upset seat (28) pivoted first cylinder (29), plummer (30) connect in upset seat (28) is close to one side of pivot (27), the piston rod of first cylinder (29) articulate in one side of pivot (27) is kept away from in upset seat (28).

3. A fire damper frame molding machine as claimed in claim 1, wherein: the lifting assembly comprises a second air cylinder (34) arranged on the base (2), and a piston rod of the second air cylinder (34) is connected to the abutting block (31).

4. A fire damper frame forming machine according to claim 3, wherein: the conveying table (3) is further provided with a limiting block (35) used for limiting the descending position of the abutting block (31), and the limiting block (35) is located at the discharging end of the conveying table (3).

5. The fire damper frame molding machine of claim 1, wherein: the bearing device comprises a bearing shaft (6) with one end connected with the unreeling frame (5) and a rotary disc arranged on the bearing shaft (6) in a rotating mode, a rotating sleeve (8) is arranged on the bearing shaft (6) in a rotating mode, the rotating sleeve (8) can slide relative to the bearing shaft (6), a plurality of groups of tensioning arms used for abutting against the steel plate roll (4) are arranged on the side wall of the rotating sleeve (8), one end of each tensioning arm is connected with the rotary disc (7) in a sliding mode, and a driving component used for driving the rotating sleeve (8) to slide relative to the bearing shaft (6) is arranged on the bearing shaft (6) so that the tensioning arms abut against the inner side of the steel plate roll (4).

6. A fire damper frame forming machine as claimed in claim 5, wherein: the tensioning arm comprises a hinge rod (10) with one end hinged to the rotating sleeve (8) and a tensioning block (11) hinged to the other end of the hinge rod (10), and one end of the tensioning block (11) is connected to the rotary disc (7) in a sliding mode.

7. A fire damper frame forming machine according to claim 6, wherein: the drive assembly comprises a threaded sleeve (16) which is rotatably arranged at one end, far away from the turntable (7), of the bearing shaft (6), the side wall of the bearing shaft (6) is provided with external threads which are in threaded fit with the threaded sleeve (16), and one end, far away from the turntable (7), of the rotating sleeve (8) is provided with a butt joint end face used for being abutted against the threaded sleeve (16).

8. A fire damper frame forming machine according to claim 7, wherein: keep away from tensioning block (11) the one end of carousel (7) is provided with gag lever post (15), gag lever post (15) be connected with slide connect in slider (13) of tensioning block (11), be provided with between tensioning block (11) and slider (13) and be used for fixing the fixed subassembly of gag lever post (15).

9. A fire damper frame forming machine according to claim 8, wherein: the fixing component comprises a threaded hole formed in the side wall of the sliding block (13) and a puller bolt (14) in threaded fit with the threaded hole, and one end of the puller bolt (14) abuts against the tensioning block (11).