CN218341144U - Steel bar welding net saw type punching equipment - Google Patents

Abstract

The utility model provides a reinforcing bar welds net saw formula trompil equipment, includes the frame, at the track of frame upper portion both sides fixedly connected with twice fore-and-aft direction, installs portable numerical control saw hole device on the track, portable numerical control saw hole device include the crossbeam, the crossbeam passes through numerical control drive arrangement around slidable mounting on the track, fixed mounting has the lift on the crossbeam, the elevating platform of lift is located the lower part, the elevating platform be the cuboid frame, install the guide rail of left right direction on the front and back end of cuboid frame, control and serve the guide rail of installing the fore-and-aft direction, each guide rail sliding fit installs the slider, fixed mounting has electronic saw on the slider, the slider is connected with numerical control linear drive device, installs material detection mechanism on electronic saw. The device can open holes on the welding net.

Description

Steel bar welding net saw type punching equipment

Technical Field

The utility model relates to a what be used on the building welds net reinforcing bar deep-processing equipment, in particular to net saw formula trompil equipment is welded to reinforcing bar belongs to reinforcing bar technical field.

Background

With the gradual advance of the industrialization process of the domestic building industry, standardization, modularization, related technologies and systems are adopted to continuously fall on the ground, and the accompanying fabricated building, various combined prefabricated and formed part parts and the like are also continuously emitted. In order to meet various field requirements, the corresponding formed steel bar products and processing equipment are produced. The prefabricated building comprises a prefabricated concrete structure, a prefabricated steel structure and a prefabricated wood structure, wherein the prefabricated concrete structure is mainly applied to houses, office buildings, teaching buildings, hospitals, high-speed rails and the like and is also a prefabricated building structure with the highest utilization rate at present. The welded mesh forming steel bar is an important component of the fabricated concrete structure. The welding net forming steel bar is that cold rolling ribbed steel bar is arranged longitudinally and transversely according to the requirements of different building components, and then is welded or bundled together to form a net, and then is welded by a welding net machine, deep processing such as hole opening, bending and the like is possibly required according to the use process requirements after the welding net is manufactured, wherein the hole opening of the welding net is the most common operation, for example, the specification of a hole to be formed on the welding net is 1100 x 800mm, the hole opening aims at adapting to the process requirements of a building cylinder part, the hole forming on the current welding net mainly adopts two modes, one mode is to adopt a welding net machine capable of directly forming the hole, the hole is directly formed after the steel bar is placed in the welding process, the equipment process is advanced, but the investment is very large, and the existing traditional welding net machine cannot be realized through upgrading transformation, and the economic performance is not good for a plurality of enterprises adopting the traditional welding net machine; secondly, a manual hole opening mode is adopted, which is a main mode for producing a welded mesh by adopting a traditional mesh welding machine, in the operation, after the welded mesh is welded and formed from the mesh welding machine, a worker cuts off the steel bars at a specified position by using a plasma cutting machine according to the requirements of components, in practice, in order to improve the efficiency, a plurality of welded meshes are generally overlapped together and then cut off, which can cause a series of problems that the cutting precision is not enough, the cut-off steel bars are not easy to clean, the strength of the steel bars is influenced to a certain extent by high temperature, the molten steel slag is stained on the welded mesh below to influence the product quality and the like; when the welding nets without holes are loaded, in order to ensure the utilization rate of the carriage, the net welding machine can additionally arrange a net turning machine at the end of the net outlet, the net turning machine is used for integrally rotating a first welding net by 180 degrees, and after a second welding net comes, the first welding net which is turned by 180 degrees is buckled on a second welding net, so that the transverse ribs of the two welding nets are oppositely and staggeredly arranged, the stacking height can be reduced, the utilization rate of the carriage is improved, but if the holes are formed by using plasma, reinforcing steel bars cannot be stacked according to the method and can only be stacked in order and in line, the utilization rate of the carriage can be reduced, the loading difficulty is increased, and time and labor are wasted.

Disclosure of Invention

The invention aims to overcome the problems in the prior art, and provides a saw-type hole drilling device for a steel bar welding net.

In order to realize the purpose of the utility model, the steel bar welding net saw type perforating equipment comprises a frame, wherein a row of conveying rollers are rotatably arranged on the left side and the right side of the frame, the row indicates the front and back direction, the conveying rollers are driven by a conveying roller motor, the distance between the two rows of conveying rollers is less than the width of a welding net, a raw material detection switch is arranged on the frame at the tail end of the conveying roller, a plurality of sets of stop mechanisms are also arranged on the frame at the tail end of the conveying roller, each stop mechanism comprises a stop cylinder, the stop cylinder is connected on a support, a V-shaped stop block is hinged on the support near a corner part, and one edge of the V-shaped stop block is hinged on a cylinder rod of the stop cylinder;

a row of material clamping cylinders are fixedly arranged on two sides of the frame, and material clamping plates are fixedly connected to cylinder rods of the material clamping cylinders;

the numerical control drilling machine comprises a rack, wherein two tracks in the front and back directions are fixedly connected to two sides of the upper part of the rack, a movable numerical control drilling device is mounted on the tracks and comprises a cross beam, the cross beam is mounted on the tracks in a front and back sliding mode through a numerical control driving device, a lifter is fixedly mounted on the cross beam, a lifting platform of the lifter is located at the lower part and is a cuboid frame, guide rails in the left and right directions are mounted at the front and back ends of the cuboid frame, guide rails in the front and back directions are mounted at the left and right ends of the cuboid frame, a sliding block is mounted on each guide rail in a sliding fit mode, an electric saw is fixedly mounted on each sliding block and connected with a numerical control linear driving device, a connecting plate is fixedly connected to the lifting rack, a plurality of material pressing cylinders are mounted at the lower part of the connecting plate and are fixedly connected to cylinder rods of the material pressing cylinders, a plurality of clamping jaw cylinders are arranged around the material pressing plates and are fixedly connected to the material pressing plates, and clamping jaws of the clamping jaw cylinders face downwards; the material pressing detection mechanism is arranged on the electric saw and comprises a switch support fixedly connected to the outer side of a saw blade of the electric saw, two induction switches distributed up and down are fixedly arranged on the upper vertical edge of the switch support, the horizontal edge of the switch support is fixedly connected or integrally arranged at the lower end of the upper vertical edge of the switch support, a sliding hole is formed in the horizontal edge of the switch support, the vertical edge of the induction sliding rod in the up-and-down direction is penetrated in the sliding hole in a vertically sliding mode, an induction body inducted with the induction switches is fixedly connected to the induction sliding rod on the upper portion of the horizontal edge of the switch support, the lower end of the induction rod is fixedly or integrally connected with a transverse edge, a spring is penetrated on the vertical edge of the induction sliding rod below the horizontal edge of the switch support, a spring limiting portion is arranged on the vertical edge of the induction sliding rod, and a spring top is arranged between the horizontal edge of the switch support and the spring limiting portion;

and the switches, the numerical control driving device, the numerical control linear driving device, the lifter, the air cylinder and the electric saw are all connected to the controller.

Further, the method comprises the following steps of; the numerical control driving device and the numerical control linear driving device are both gear and rack numerical control driving devices, racks on the gear and rack numerical control driving devices are fixedly arranged, gears are meshed with the racks, the gears are connected to an output shaft of a speed reducer, an input shaft of the speed reducer is connected to an output shaft of a servo motor, and limit switches are mounted at the end parts of guide rails.

Further, the method comprises the following steps of; a saw blade zero position detection switch is fixedly arranged on the sliding block.

Further, the method comprises the following steps of; the lower part of the horizontal edge of the switch support is also integrally connected with a lower vertical edge, the lower end of the lower vertical edge is in a shape of a mouth, long holes are formed in two upper horizontal planes and two lower vertical planes of the mouth shape, one vertical plane, the slide bar is in an L shape, the vertical edge of the L shape is positioned in the long hole in the horizontal plane of the mouth shape, and the vertical edge of the L shape is positioned in the long hole in the vertical plane of the mouth shape.

Further, the method comprises the following steps of; the upper end of the upper vertical edge of the switch bracket is also integrally connected with a horizontal limiting plate.

Further, the method comprises the following steps of; and a front waste conveying belt and a rear waste conveying belt are arranged below the two rows of conveying rollers, and a left waste conveying belt and a right waste conveying belt are arranged at the tail ends of the front waste conveying belt and the rear waste conveying belt.

Further, the method comprises the following steps of; the lifter is a spiral lifter.

Further, the method comprises the following steps of; the rectangular frame is fixedly connected with a plurality of guide rods, guide sleeves corresponding to the guide rods are fixedly arranged on the elevator, and the guide rods are positioned in the guide sleeves.

Further, the method comprises the following steps of; the number of the movable numerical control hole sawing devices is two.

Further, the method comprises the following steps of; keep off material cylinder fixed connection on the support, a long seam has been seted up to an edge of V-arrangement material stopping block, articulated shaft slidable mounting is in the long seam, articulated shaft fixed connection is on the jar pole of keeping off the material cylinder.

The utility model discloses an actively beneficial technological effect lies in: this equipment can be in the trompil that welds the net, and the opening demand of adaptable not equidimension has solved the problem that present welding net adopted artifical trompil to produce.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is a schematic view of the stock stop.

Fig. 3 is a schematic view on a cross beam.

Fig. 4 is a schematic view on a lift table.

Fig. 5 is a partially enlarged view of fig. 4.

Fig. 6 is a schematic view at the drive shaft.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a frame; 2: a conveying roller; 3: a material clamping cylinder; 301: a material clamping plate; 4: a support; 5: a track; 6: a cross beam; 7: a screw elevator; 8: a lifting platform; 9: an electric saw; 10: left and right scrap conveyor belts; 11: front and rear waste conveyor belts; 12, a raw material detection switch; 13: a material blocking cylinder; 14: a V-shaped material blocking arm; 15: long sewing; 16: the beam drives a servo motor; 17: a beam drive gear; 18: a material pressing plate; 19: a connecting plate; 20: a clamping jaw cylinder; 21: a clamping jaw; 22: the slide block drives a servo motor; 23: the sliding block drives the gear; 24: the slide block drives the rack; 25: a guide rail; 26: a slider; 27: a saw blade zero position switch; 28: a switch bracket; 281, horizontal edge of the switch bracket; 282: an upper vertical edge of the switch bracket; 283: a lower vertical edge of the switch bracket; 284: a limiting plate; 29: a guide bar; 30: a limit switch; 31: an upper detection switch; 32: a lower detection switch; 33: an inductor; 34: a slide bar; 35: transverse edges; 36: a spring; 37: a long hole; 38: the cross beam drives the rack; 39: a material pressing cylinder; 40: a spring position-limiting part; 41: a drive shaft; 42: a universal joint.

As shown in the attached drawing, a reinforcing bar welds net saw formula trompil equipment, in welding the net production, this equipment is installed between net welder and the net machine that turns over, this equipment includes frame 1, and the left and right sides all rotates in the frame and installs a row of conveying roller 2, indicates the fore-and-aft direction in this application, and the conveying roller is common chain drive, and the chain passes through conveying roller motor drive, installs front and back waste material conveyer belt 11 in the below of two rows of conveying rollers, and waste material conveyer belt about the end 10 of front and back waste material conveyer belt installs, two rows of distance between the conveying roller be less than the width of welding the net, so the welding net left and right sides respectively is located the conveying roller, and the distance between two rows of conveying rollers is greater than the width of the hole that will open, and the reinforcing bar that saw falls down smoothly, and fixed mounting has support 4 in the frame of conveying roller tail end, installs raw materials detection switch 12 on support 4, still installs two sets of stock stop mechanism in the frame of conveying roller tail end, and stop material cylinder 13, stock stop cylinder 13 fixed connection on support 4, and the edge of V-shaped stock block 14 has seted up a long seam, and articulated shaft fixed connection has 3 in stock rod, and the stock block is connected with the stock block cylinder on the articulated shaft is connected with the both sides.

Two rails 5 in the front-back direction are fixedly connected to two sides of the upper portion of the frame, and two sets of movable numerical control hole sawing devices are mounted on the rails.

The movable numerical control hole sawing device comprises a cross beam 6, the cross beam is arranged on a rail 5 in a front-back sliding mode through a numerical control driving device, a cross beam zero position detection switch is installed at the end of the rail and can eliminate accumulated errors in movement, the numerical control driving device adopts a gear-rack mechanism, a cross beam driving rack 38 is fixedly installed on a rack along the direction of the rail 5, a transmission shaft 41 is driven at the output end of a cross beam driving servo motor 16 (with a speed reducer), two ends of the transmission shaft are respectively connected with a cross beam driving gear 17, in order to avoid interference with a spiral lifter, two ends of the transmission shaft are respectively connected with a universal joint 42, the cross beam driving gear is meshed with the cross beam driving rack, and the cross beam driving servo motor (with the speed reducer) is fixedly connected onto the cross beam.

The cross beam is fixedly provided with a lifter 7 which is a spiral lifter, a lifting platform of the lifter is positioned at the lower part 8, the cuboid frame is fixedly connected with a plurality of guide rods 29, guide sleeves corresponding to the guide rods are fixedly arranged on the lifter, and the guide rods are positioned in the guide sleeves.

The elevating platform be the cuboid frame, install the guide rail of left right direction on the front and back end of cuboid frame, install the guide rail of fore-and-aft direction on the left and right sides end, 25 shows the guide rail of left right direction, each guide rail sliding fit installs slider 26, fixed mounting has electronic saw 9 on the slider, the slider is connected with numerical control linear drive device, numerical control linear drive device adopts rack and pinion mechanism, as shown in figure 4, it has slider drive rack 24 to parallel fixed mounting with guide rail 25, have the speed reducer on slider drive servo motor's the output shaft, the output fixedly connected with slider drive gear 23 of speed reducer, slider drive rack 24 meshes with slider drive gear mutually, fixedly connected with saw bit zero-bit detection switch 27 on the slider drive servo motor, saw bit zero-bit detection switch can adopt proximity switch, near the body in the zero-bit installation of settlement. Limit switches 30 are mounted at the end parts of the guide rails.

The lifting frame is fixedly connected with a connecting plate 19, the lower portion of the connecting plate is provided with a plurality of material pressing cylinders 39, the material pressing plate 18 is fixedly connected to a cylinder rod of each material pressing cylinder, a plurality of clamping jaw cylinders 20 are arranged around the material pressing plate, the clamping jaw cylinders 20 are fixedly connected to the material pressing plate 18, and clamping jaws 21 of the clamping jaw cylinders face downwards.

A material pressing detection mechanism is arranged on the electric saw and comprises a switch bracket 28 fixedly connected to the outer side of a saw blade of the electric saw, two induction switches which are distributed up and down are fixedly arranged on an upper vertical edge 282 of the switch bracket, and the two induction switches which are distributed up and down are an upper detection switch 31 and a lower detection switch 32 in the drawing; horizontal limit 281 fixed connection or integrative setting of switch support are at the last vertical limit lower extreme of switch support, the slide opening has been seted up to the horizontal edge of switch support, the perpendicular limit of the response slide bar 34 of upper and lower direction slides from top to bottom and wears to establish in the slide opening, fixedly connected with and the inductor 33 that inductive switch responded to mutually on the response slide bar on the horizontal limit upper portion of switch support, the lower extreme of induction rod is fixed or an organic whole is connected with horizontal limit 35, the horizontal limit has two effects, firstly touch and weld net back elevator down can drive the inductor and rise, give the start-up of electric saw, the completion signal, secondly because the horizontal limit is very close from the saw bit, certain packing force can be exerted to reinforcing bar around at the in-process horizontal limit of saw bit reinforcing bar, make the reinforcing bar be difficult to take place to beat, avoid damaging the saw bit. In this embodiment, the horizontal limit lower part of switch bracket still an organic whole is connected with vertical limit down, and the lower extreme on vertical limit is "mouthful" shape down, has all seted up the slot hole on two upper and lower horizontal planes of mouth shape, a vertical face, the slide bar be L shape, the perpendicular limit of L shape is located the slot hole on the mouth shape horizontal plane, the perpendicular limit of L shape is located the slot hole on the vertical face of mouth shape, switch bracket's last vertical limit upper end still an organic whole is connected with horizontal limiting plate 284. The vertical edge of the induction slide rod below the horizontal edge of the switch support is provided with a spring 36 in a penetrating manner, the vertical edge of the induction slide rod is provided with a spring limiting part 40, the spring is propped between the horizontal edge of the switch support and the spring limiting part, and the switches, the numerical control driving device, the numerical control linear driving device, the lifter, the air cylinder and the electric saw are all connected to the controller.

The utility model provides a numerical control drive arrangement, numerical control linear drive arrangement all can adopt present wide application's on the numerical control machine tool numerical control ball to replace.

The working process of the equipment is as follows: when the equipment is started, the two sets of movable numerical control hole sawing devices are respectively positioned at the discharge end and the feed end of the equipment, the position is detected and corrected through the beam zero position detection switch, after the welding of the net is completed, the material pushing device of the net welding machine sends raw materials to the conveying rollers, the driving motor of the conveying rollers can be started according to signals of the net welding machine, the net welding detection switch can also be installed at the feed end, the driving motor of the conveying rollers can be started according to the signals of the net welding detection switch, the driving motor of the conveying rollers can also be manually started, the net welding conveying rollers run until the raw material detection switch 12 obtains the signals, the driving motor of the conveying rollers stops running, the material blocking cylinders stretch out, the V-shaped material blocking arms turn over upwards to block the welding net to advance, and the raw materials are positioned, at the moment, the cylinders on the material blocking cylinders 10 on the two sides synchronously stretch out, and the raw materials are blocked through the material blocking plates.

After the raw material is clamped, the movable numerical control hole sawing device is driven by the numerical control driving device to move to a hole drilling position. Meanwhile, the servo motor is driven by the sliding block from the position of the zero switch, the sliding block is moved to the position above a steel bar to be cut when the hole is formed, the spiral elevator descends, the transverse edge at the lower end of the sliding rod descends along with descending in the descending process, when the transverse edge is pressed on a welding net, the elevator drives the sliding rod compression spring to slide upwards in the descending process, the inductor moves upwards along with ascending, after the current detection switch is induced by the inductor, the electric saw is started to drive the saw blade to rotate, meanwhile, the material pressing cylinder downwards drives the material pressing plate to press the steel bar, and the clamping jaw tightly clamps the welding net. The spiral elevator descends to start cutting the net.

The spiral elevator continues to descend, after the upper detection switch obtains a signal, the steel bar is proved to be cut off, the spiral elevator is lifted for a certain distance, the four sliding blocks drive the servo motor to drive the electric saw to move to the position of the next steel bar, and the actions are repeated until the cutting is completed.

Through the actions, two holes can be formed in one welding net at a time, and if more than two holes are needed, the welding can be completed by referring to the steps. After the holes are completely opened, the material blocking cylinder drives the V-shaped material blocking arm to turn downwards, the material blocking cylinder retracts, the driving motor of the conveying roller is started, the welded net is sent out, and one welded net opening is completed. The reinforcing bar that electronic saw sawed falls on the waste material back and forth conveyer belt through being listed as between the conveying roller, falls on the conveyer belt about the waste material through the waste material back and forth conveyer belt, output device.

Each switch in this application all can adopt proximity switch, with proximity switch cooperation proximity body can.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims (10)

1. The utility model provides a reinforcing bar welds net saw formula trompil equipment, includes the frame, and the left and right sides all rotates in the frame and installs a conveying roller, and the front and back direction is pointed to in the row, and the conveying roller passes through conveying roller motor drive, its characterized in that: the distance between the two rows of conveying rollers is smaller than the width of a welded net, a raw material detection switch is installed on a rack at the tail end of each conveying roller, a plurality of sets of material blocking mechanisms are further installed on the rack at the tail end of each conveying roller, each material blocking mechanism comprises a material blocking cylinder, the material blocking cylinders are connected to the support, the V-shaped material blocking blocks are hinged to the support near corner positions, and one edge of each V-shaped material blocking block is hinged to a cylinder rod of each material blocking cylinder;

a row of material clamping cylinders are fixedly arranged on two sides of the frame, and material clamping plates are fixedly connected to cylinder rods of the material clamping cylinders;

the numerical control drilling machine comprises a rack, wherein two tracks in the front and back directions are fixedly connected to two sides of the upper part of the rack, a movable numerical control drilling device is mounted on the tracks and comprises a cross beam, the cross beam is mounted on the tracks in a front and back sliding mode through a numerical control driving device, a lifter is fixedly mounted on the cross beam, a lifting platform of the lifter is located at the lower part and is a cuboid frame, guide rails in the left and right directions are mounted at the front and back ends of the cuboid frame, guide rails in the front and back directions are mounted at the left and right ends of the cuboid frame, a sliding block is mounted on each guide rail in a sliding fit mode, an electric saw is fixedly mounted on each sliding block and connected with a numerical control linear driving device, a connecting plate is fixedly connected to the lifting rack, a plurality of material pressing cylinders are mounted at the lower part of the connecting plate and are fixedly connected to cylinder rods of the material pressing cylinders, a plurality of clamping jaw cylinders are arranged around the material pressing plates and are fixedly connected to the material pressing plates, and clamping jaws of the clamping jaw cylinders face downwards; the automatic material pressing device comprises an electric saw and a material pressing detection mechanism, wherein the material pressing detection mechanism comprises a switch support fixedly connected to the outer side of a saw blade of the electric saw, two induction switches distributed up and down are fixedly installed on the upper vertical edge of the switch support, the horizontal edge of the switch support is fixedly connected or integrally arranged at the lower end of the upper vertical edge of the switch support, a sliding hole is formed in the horizontal edge of the switch support, the vertical edges of the induction sliding rods in the up-and-down direction are penetrated in the sliding hole in a vertically sliding manner, induction bodies which are induced with the induction switches are fixedly connected to the induction sliding rods on the upper portion of the horizontal edge of the switch support, the lower end of each induction rod is fixedly or integrally connected with a transverse edge, a spring is penetrated on the vertical edge of the induction sliding rod below the horizontal edge of the switch support, a spring limiting portion is arranged on the vertical edge of the induction sliding rod, and a spring top is arranged between the horizontal edge of the switch support and the spring limiting portion;

and the switches, the numerical control driving device, the numerical control linear driving device, the lifter, the air cylinder and the electric saw are all connected to the controller.

2. The welded mesh saw-type perforating device for steel bars as claimed in claim 1, wherein: the numerical control driving device and the numerical control linear driving device are both gear and rack numerical control driving devices, racks on the gear and rack numerical control driving devices are fixedly arranged, gears are meshed with the racks, the gears are connected to an output shaft of a speed reducer, an input shaft of the speed reducer is connected to an output shaft of a servo motor, and limit switches are mounted at the end parts of guide rails.

3. The welded mesh saw-type perforating device for steel bars as claimed in claim 1, wherein: a saw blade zero position detection switch is fixedly arranged on the sliding block.

4. The reinforcement welding mesh saw type tapping device according to claim 1, wherein: the switch support's horizontal limit lower part still an organic whole be connected with down vertical limit, and the lower extreme on vertical limit is "mouthful" shape down, has all seted up the slot hole on two upper and lower horizontal planes of mouth type, a vertical face, the slide bar be L shape, the perpendicular limit of L shape is located the slot hole on the shape horizontal plane of mouth, the perpendicular limit of L shape is located the slot hole on the vertical face of mouth shape.

5. The welded mesh saw-type perforating device for steel bars as claimed in claim 1, wherein: the upper end of the upper vertical edge of the switch bracket is also integrally connected with a horizontal limiting plate.

6. The welded mesh saw-type perforating device for steel bars as claimed in claim 1, wherein: and a front waste conveying belt and a rear waste conveying belt are arranged below the two rows of conveying rollers, and a left waste conveying belt and a right waste conveying belt are arranged at the tail ends of the front waste conveying belt and the rear waste conveying belt.

7. The reinforcement welding mesh saw type tapping device according to claim 1, wherein: the lifter is a spiral lifter.

8. The welded mesh saw-type perforating device for steel bars as claimed in claim 1, wherein: the rectangular frame is fixedly connected with a plurality of guide rods, guide sleeves corresponding to the guide rods are fixedly arranged on the elevator, and the guide rods are positioned in the guide sleeves.

9. The welded mesh saw-type perforating device for steel bars as claimed in claim 1, wherein: the number of the movable numerical control hole sawing devices is two.

10. The welded mesh saw-type perforating device for steel bars as claimed in claim 1, wherein: keep off material cylinder fixed connection on the support, a long seam has been seted up to an edge of V-arrangement material stopping block, articulated shaft slidable mounting is in the long seam, articulated shaft fixed connection is on the jar pole of keeping off the material cylinder.

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