CN114643483B

CN114643483B - Clamping mechanism for numerical control machine for steel bar sawing

Info

Publication number: CN114643483B
Application number: CN202210537189.2A
Authority: CN
Inventors: 赖志勇; 张伟; 赖琼霞; 赖伊莉; 唐婷
Original assignee: Jiangsu Zhongdong Machinery Technology Co ltd
Current assignee: Jiangsu Zhongdong Machinery Technology Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-07-29
Anticipated expiration: 2042-05-18
Also published as: CN114643483A

Abstract

The invention provides a clamping mechanism for a numerical control machine for sawing reinforcing steel bars, which relates to the technical field of machining and comprises the following components: an outer support plate; the inner surface of the outer support plate is fixedly connected with an inner circulation guide frame through welding, the inner circulation guide frame comprises a circulation outer rail and a circulation inner rail, the outer support plate is provided with two positions, and the middle parts of the two outer support plates are fixedly connected through a connecting rod; it has and carries out supplementary fixed and propulsive function to the reinforcing bar by the cutting, use reinforcing bar feed mechanism and reinforcing bar cutting mechanism's intermediate position, it is fixed to press from both sides the reinforcing bar through multiunit reinforcing bar fixing base, then transport the reinforcing bar is assisted through dragging mechanism, supplementary reinforcing bar feed mechanism is supplementary fixed and synchronous propulsion to the reinforcing bar of cutting, current reinforcing bar numerical control cutting machine has been solved and has advanced the in-process to the reinforcing bar, carry out the fortune material through cylinder or conveyer belt, the fortune material in-process takes place to rock easily, lead to the a set of reinforcing bar unevenness by the cutting, thereby influence the problem of the precision of reinforcing bar cutting.

Description

Clamping mechanism for numerical control machine for steel bar sawing

Technical Field

The invention relates to the technical field of machining, in particular to a clamping mechanism for a steel bar sawing numerical control machine.

Background

At present, in machining and building field, need use a large amount of reinforcing bars, in order to satisfy the needs of reinforcing bar production and processing, often need carry out the operation of cutting of different length to the reinforcing bar, in current reinforcing bar cutting equipment, in order to adapt to the demand of high-efficient processing and the production needs of high precision, a large amount of reinforcing bar processing producers use numerical control machine to cut the reinforcing bar, it has automatic feed, dosing and the function of automatic transfer work piece, manpower and material resources have been saved greatly, consequently, wide application has been obtained.

For example, the patent with publication number CN201510622984.1 discloses an automatic cutting device for steel bars, which comprises a conveying assembly, a clamping assembly, a guiding assembly, a cutting assembly and a measuring assembly, wherein the conveying assembly mainly comprises a first bracket and a plurality of conveying rollers, and the plurality of conveying rollers are connected with a stepping motor arranged on the first bracket through a transmission mechanism; a second bracket is arranged on one side of the first bracket, two vertically arranged first air cylinders are fixedly arranged at the bottom of the second bracket, a tray is fixedly arranged at the free ends of piston rods of the two first air cylinders, a motor is fixedly arranged on the tray, and the output end of the motor is connected with a cutting saw through a speed reducer; a fixing frame of a gantry structure is arranged right above the cutting saw, and two ends of the fixing frame are respectively fixed with a stop curtain; and a third support is arranged on one side of the second support, and a measuring assembly is arranged on the third support.

However, as for the current numerical control cutting machine for steel bars, when cutting the steel bars, the steel bars need to be arranged and fixed at the cutting position, the existing numerical control cutting machine for steel bars pushes the steel bars in the process, the steel bars are conveyed through a roller or a conveyor belt, and the conveying process is easy to shake, so that a group of steel bars to be cut are uneven, and the cutting precision of the steel bars is affected.

Disclosure of Invention

In view of the above, the invention provides a clamping mechanism for a steel bar sawing numerical control machine, which has the functions of auxiliary fixing and pushing of cut steel bars, is applied to the middle positions of a steel bar feeding mechanism and a steel bar cutting mechanism, clamps and fixes the steel bars through a plurality of groups of steel bar fixing seats, then assists in transferring the steel bars through a dragging mechanism, assists in fixing and synchronously pushing the cut steel bars through an auxiliary steel bar feeding mechanism, and reduces the phenomenon of uneven steel bars caused by shaking in the transportation process.

The invention provides a clamping mechanism for a steel bar sawing numerical control machine, which specifically comprises: an outer support plate; the inner surface of the outer support plate is fixedly connected with an inner circulation guide frame through welding, the inner circulation guide frame comprises a circulation outer rail and a circulation inner rail, the outer support plate is provided with two positions, and the middle parts of the two outer support plates are fixedly connected through a connecting rod; the driving motor main body is fixedly connected to the right side of the front outer support plate through a screw, and the output end of the driving motor is connected with and drives the dragging assembly; the dragging component consists of two groups of synchronous dragging shafts, and two ends of the synchronous dragging shafts are respectively and rotatably connected to the front and rear outer support plates; the trigger adsorption frame is fixedly connected inside the inner circulation guide frame and is positioned on the right side of the inner circulation guide frame; the external auxiliary clamping cylinder is arranged on the right side of the external support plate; the two ends of the movable propelling beam are respectively and movably connected to the front and rear inner circulation guide frames, and the front end and the rear end of the movable propelling beam are respectively and fixedly connected to the front and rear traction assemblies; the upper separation clamping block is fixedly connected to the outer surface of the movable propelling beam; and the inner clamping assembly is connected inside the upper separation clamping block in a sliding manner, and the inner clamping assembly main body is connected to the movable propelling beam in a sliding manner.

Optionally, the inner side of the inner circulation guide frame is fixedly connected with a circulation outer rail and a circulation inner rail, the circulation outer rail and the circulation inner rail are both rectangular frame bodies with double round heads, the circulation outer rail is arranged on the outer side of the circulation inner rail, and a gap is formed between the circulation outer rail and the circulation inner rail.

Optionally, two ends of the synchronous pulling shaft are respectively and fixedly connected with a pulling chain wheel, and the left synchronous pulling shaft and the right synchronous pulling shaft are in chain transmission connection through two groups of pulling chain wheels and pulling chains.

Optionally, trigger and adsorb frame fixed connection in the middle of the track in two places circulation, and trigger and adsorb the frame and be located the inboard right-hand member of circulation inner rail, trigger and adsorb the plate body that the frame is the arc structure, trigger the absorption magnetic stripe that fixedly connected with iron arc strip body structure on the absorption frame surface.

Optionally, two ends of the movable pushing beam are respectively provided with four guide end wheels, two ends of the movable pushing beam are respectively and fixedly connected with a chain connecting frame, the tail end of the chain connecting frame is fixedly connected with a dragging chain, and the movable pushing beam is provided with a lower guide groove in a rectangular through groove structure in a penetrating manner.

Optionally, the upper separation clamping block is a block body with a trapezoidal structure, two side faces of the upper separation clamping block are processed into arc concave faces, two rectangular bidirectional guide sliding grooves are transversely formed in the upper separation clamping block, and a built-in contraction groove with a rectangular groove body structure is formed in the middle of the upper separation clamping block.

Optionally, the lower extreme fixedly connected with magnetism of interior clamping component inhales the trigger block, and the centre of interior clamping component has seted up one and has reset the inside groove, and interior clamping component top is provided with two wedge fixture blocks.

Optionally, the inner reset groove is a rectangular groove body, and the upper surface of the inner reset groove is fixedly connected with a reset spring.

Optionally, the wedge-shaped fixture block is a rectangular block, the outer surface of the wedge-shaped fixture block is a wedge-shaped surface, the lower surface of the wedge-shaped fixture block is connected with a hinged connecting rod through a hinge, and the other end of the hinged connecting rod is connected with the upper end surface of the inner clamping assembly through a hinge.

Advantageous effects

According to the auxiliary clamping mechanism of the numerical control steel bar cutting machine, compared with the feeding mechanism of the traditional numerical control steel bar cutting machine, the auxiliary clamping mechanism has the functions of auxiliary fixing and pushing of cut steel bars, is applied to the middle positions of the steel bar feeding mechanism and the steel bar cutting mechanism, clamps and fixes the steel bars through a plurality of groups of steel bar fixing seats, then carries out auxiliary transfer of the steel bars through the pulling mechanism, and helps the auxiliary steel bar feeding mechanism to assist fixing and synchronously pushing of the cut steel bars, so that the phenomenon that the steel bars are not neat due to shaking in the transportation process is reduced.

In addition, under the action of connecting and driving the dragging components by a driving motor, the synchronous dragging shafts at the left end rotate clockwise, the synchronous dragging shafts at the left side and the right side are in chain transmission connection with the dragging chains through two groups of dragging chain wheels, so that the two groups of dragging chains move in the same direction and synchronously, a plurality of groups of movable propelling beams are fixedly connected between the two groups of dragging chains, the movable propelling beams are dragged through the synchronous movement of the two groups of dragging chains in the same direction, so that the movable propelling beams above move rightwards, and in addition, through the action of the circulating outer rail and the circulating inner rail, guide end wheels at the two ends of the movable propelling beams are in rolling connection with the circulating outer rail and the circulating inner rail, so that the guide effect is achieved, and the transmission friction force and resistance are reduced.

In addition, through the cooperation of last partition clamp splice and interior clamping component, under the normality, two sets of wedge fixture blocks of interior clamping component top are the expansion state under the tight effect in top of reset spring and articulated connecting rod, get into the in-process in the middle of the adjacent two sets of last partition clamp splices as columniform reinforcing bar, extrude the wedge fixture block of both sides, when the reinforcing bar is put in the bottom of separating between the clamp splice on two sets of, the wedge fixture block of reinforcing bar both sides is abducted under the supporting role of reset spring top tight and articulated connecting rod simultaneously, press from both sides the reinforcing bar tightly from both sides, realize the fixed of reinforcing bar.

In addition, through triggering the cooperation that adsorbs frame and magnetism inhale the trigger block, when the reinforcing bar moves on operation equipment, the activity propulsion roof beam moves right, when the activity propulsion roof beam moves the right side of operation platform, magnetism inhales the top that triggers the block and is located the absorption magnetic stripe, inhale the trigger block downstream of magnetism through magnetism effect messenger, when magnetic attraction is greater than reset spring's elasticity, interior clamping component moves down, drive the shrink of two sets of wedge fixture blocks, break away from the fixed to the reinforcing bar, then the activity propulsion roof beam turns to at the right-hand member of transporting the frame, carry out the circulation action on the inner loop leading truck, realized the self-holding and not hard up effect to the reinforcing bar, more be favorable to the circulation promotion to the reinforcing bar, the continuation promotes the reinforcing bar, reduce the regulation to reinforcing bar fixed conveying device, the effectual production efficiency that has improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

The drawings in the following description relate to some embodiments of the invention only and are not intended to limit the invention.

In the drawings:

fig. 1 is a schematic view showing the overall structure of an auxiliary clamping mechanism of a numerically controlled steel bar cutting machine according to an embodiment of the present invention;

FIG. 2 shows a schematic view from above of a clamping mechanism according to an embodiment of the invention;

FIG. 3 shows a schematic view of the underside of a clamping mechanism according to an embodiment of the invention;

FIG. 4 shows a schematic view of a trigger suction frame according to an embodiment of the present invention;

FIG. 5 shows a schematic view of an internal circulation guide frame according to an embodiment of the present invention;

FIG. 6 shows a schematic view of an upper dividing clamp block according to an embodiment of the invention;

FIG. 7 shows a schematic view of the interior of an upper dividing clamp block according to an embodiment of the invention;

FIG. 8 shows a schematic view of a mobile feed beam according to an embodiment of the invention;

FIG. 9 shows a schematic view of a clamping assembly in accordance with an embodiment of the invention;

FIG. 10 illustrates a schematic diagram, partially enlarged at A, of FIG. 2, according to an embodiment of the invention;

fig. 11 is a partially enlarged schematic view at B of fig. 3 according to an embodiment of the present invention.

List of reference numerals

1. An outer support plate; 2. an internal circulation guide frame; 201. circulating the outer rail; 202. circulating the inner rail; 3. a drive motor; 4. synchronously pulling the shaft; 401. a drag sprocket; 402. pulling the chain; 5. triggering the adsorption frame; 501. adsorbing the magnetic strip; 6. an external auxiliary clamping cylinder; 7. a movable feed beam; 701. a leading end wheel; 702. a chain connecting frame; 703. a lower guide groove; 8. an upper partition clamp block; 801. a bidirectional guide chute; 802. a contraction groove is arranged inside; 9. an inner clamping assembly; 901. the trigger block is magnetically attracted; 902. resetting the inner groove; 9021. a return spring; 903. a wedge-shaped fixture block; 9031. a hinged link.

Detailed Description

In order to make the objects, aspects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.

Example (b): please refer to fig. 1 to fig. 11:

the invention provides a clamping mechanism for a steel bar sawing numerical control machine, which comprises an outer support plate 1; the inner surface of the outer support plate 1 is fixedly connected with an inner circulation guide frame 2 through welding, the inner circulation guide frame 2 comprises an outer circulation rail 201 and an inner circulation rail 202, the outer support plate 1 is provided with two positions, and the middle parts of the two outer support plates 1 are fixedly connected through a connecting rod; the main body of the driving motor 3 is fixedly connected to the right side of the front outer support plate 1 through a screw, and the output end of the driving motor 3 is connected with and drives the dragging component; the dragging component consists of two groups of synchronous dragging shafts 4, and two ends of the synchronous dragging shafts 4 are respectively and rotatably connected to the front and rear outer support plates 1; the trigger adsorption frame 5 is fixedly connected inside the inner circulation guide frame 2, and the trigger adsorption frame 5 is positioned on the right side of the inner circulation guide frame 2; the external auxiliary clamping cylinder 6 is arranged on the right side of the external support plate 1; the two ends of the movable propelling beam 7 are movably connected to the front and rear inner circulation guide frames 2 respectively, the front end and the rear end of the movable propelling beam 7 are fixedly connected to the front and rear traction assemblies respectively, the inner side of each inner circulation guide frame 2 is fixedly connected with a circulation outer rail 201 and a circulation inner rail 202, the circulation outer rail 201 and the circulation inner rail 202 are rectangular frame bodies with double round heads, the circulation outer rail 201 is arranged on the outer side of the circulation inner rail 202, and a gap is formed between the circulation outer rail 201 and the circulation inner rail 202; the two ends of the movable propelling beam 7 are respectively provided with four guide end wheels 701, the guide end wheels 701 at the two ends of the movable propelling beam 7 are connected inside the circulating outer rail 201 and the circulating inner rail 202 in a rolling mode to play a role in guiding and reduce the friction force and the resistance of transmission, the inner circulating guide frame 2 is of a closed-loop structure and plays a role in guiding the movable propelling beam 7, the movable propelling beam 7 is guided to circularly move on the inner circulating guide frame 2, and the reinforcing steel bars are circularly clamped, fixed and assisted to be propelled; the upper separation clamping block 8 is fixedly connected to the outer surface of the movable propelling beam 7; and the inner clamping assembly 9 is connected inside the upper separation clamping block 8 in a sliding manner, and the main body of the inner clamping assembly 9 is connected on the movable push beam 7 in a sliding manner.

Further, according to the embodiment of the present invention, as shown in fig. 5, both ends of the synchronous pulling shaft 4 are fixedly connected with one pulling sprocket 401, respectively, and the left and right synchronous pulling shafts 4 are chain-driven connected by two sets of pulling sprockets 401 and pulling chains 402; the dragging chain 402 is fixedly connected with the outer end of the chain connecting frame 702, the synchronous dragging shaft 4 at the left end rotates clockwise under the action of the connection and driving of the dragging component by the driving motor 3, the synchronous dragging shafts 4 at the left side and the right side are connected with the dragging chain 402 by the chain transmission formed by the two groups of dragging chain wheels 401, so that the two groups of dragging chains 402 move in the same direction and synchronously, a plurality of groups of movable push beams 7 are fixedly connected between the two groups of dragging chains 402, and the movable push beams 7 are pulled by the two groups of dragging chains 402 moving in the same direction and synchronously, so that the movable push beams 7 above move rightwards.

In addition, according to the embodiment of the present invention, as shown in fig. 4, the trigger absorbing frame 5 is fixedly connected between the two inner circulating rails 202, the trigger absorbing frame 5 is located at the right end inside the inner circulating rail 202, the trigger absorbing frame 5 is a plate body with an arc-shaped structure, and the outer surface of the trigger absorbing frame 5 is fixedly connected with the absorbing magnetic stripe 501 with an iron arc-shaped strip body structure; the trigger absorption frame 5 is arranged on the right side in the middle of the two circulating inner rails 202, the matching of the trigger absorption frame 5 and the magnetic absorption trigger block 901 is realized through triggering, when the steel bars move on the running equipment, the movable push beam 7 moves rightwards, when the movable push beam 7 moves to the right side of the running platform, the magnetic absorption trigger block 901 is positioned above the absorption magnetic bar 501, the magnetic absorption trigger block 901 moves downwards through the magnetic absorption effect, the magnetic absorption force is greater than the elastic force of the reset spring 9021, the inner clamping component 9 moves downwards, the magnetic absorption trigger block 901 does not contact the absorption magnetic bar 501, two groups of wedge-shaped clamping blocks 903 are driven to shrink, the steel bars are separated from being fixed, namely, the set position of the absorption frame 5 is triggered, and the position of the clamping component is not loosened.

In addition, according to the embodiment of the present invention, as shown in fig. 8, two ends of the movable propulsion beam 7 are respectively and fixedly connected with a chain connecting frame 702, the tail end of the chain connecting frame 702 is fixedly connected with the drag chain 402, and the movable propulsion beam 7 is provided with a lower guide groove 703 having a rectangular through groove structure; the lower guide groove 703 plays a role in guiding the main body of the inner clamping assembly 9, and in the process of pulling the movable push beam 7 by the two groups of pull chains 402, the guide end wheels 701 at the two ends of the movable push beam 7 are connected inside the circulating outer rail 201 and the circulating inner rail 202 in a rolling manner, so that the guide function is played, the transmission friction force and resistance are reduced, and the movable push beam 7 performs reciprocating circular motion inside the annular circulating outer rail 201 and the annular circulating inner rail 202.

In addition, according to the embodiment of the present invention, as shown in fig. 7, the upper separating and clamping block 8 is a block body with a trapezoidal structure, two side surfaces of the upper separating and clamping block 8 are processed into arc concave surfaces, two rectangular bidirectional guide sliding grooves 801 are transversely formed in the upper separating and clamping block 8, and a built-in shrinkage groove 802 with a rectangular groove structure is formed in the middle of the upper separating and clamping block 8; through the adjacent two sets of effect that separate clamp splice 8 can play the location to the reinforcing bar on, through the both sides face improvement reinforcing bar of arcwall face structure location stability can, clamping component 9 sliding connection is in the inside of two-way direction spout 801 respectively in two places, plays the effect of direction, through clamping component 9 in the inside sliding connection of built-in shrink groove 802, plays the guide effect to clamping component 9.

In addition, according to an embodiment of the present invention, as shown in fig. 9, a magnetic attraction trigger block 901 is fixedly connected to a lower end of the inner clamping assembly 9, a reset inner groove 902 is formed in the middle of the inner clamping assembly 9, the reset inner groove 902 is a rectangular groove body, a reset spring 9021 is fixedly connected to an inner upper surface of the reset inner groove 902, two wedge-shaped fixture blocks 903 are arranged above the inner clamping assembly 9, the wedge-shaped fixture blocks 903 are rectangular block bodies, an outer surface of each wedge-shaped fixture block 903 is a wedge-shaped surface, a hinge connection rod 9031 is connected to a lower surface of each wedge-shaped fixture block 903 in a hinged manner, and another end of the hinge connection rod 9031 is connected to an upper end surface of the inner clamping assembly 9 in a hinged manner; through the cooperation of last partition clamp splice 8 and interior clamp splice 9, under the normality, two sets of wedge fixture block 903 of interior clamp splice 9 top are the expansion state under reset spring 9021 and articulated connecting rod 9031's the tight effect in top, get into the in-process in the middle of the adjacent two sets of partition clamp splice 8 on the columniform reinforcing bar, extrude the wedge fixture block 903 of both sides, when the reinforcing bar separates the bottom between clamp splice 8 on two sets of and puts, the wedge fixture block 903 of reinforcing bar both sides is abducted under reset spring 9021 top tight and articulated connecting rod 9031's supporting role simultaneously, press from both sides to it from the reinforcing bar, fix the reinforcing bar.

The specific use mode and function of the embodiment are as follows: in the invention, firstly, the auxiliary clamping and positioning device is arranged in the middle of the reinforcing steel bar feeding mechanism and the reinforcing steel bar cutting mechanism, the reinforcing steel bar feeding mechanism conveys a plurality of reinforcing steel bars from the left side to the right side simultaneously, so that the reinforcing steel bars enter the area above the movable push beam 7 and enter the middle of two adjacent groups of upper separating clamping blocks 8, the reinforcing steel bars are clamped by wedge-shaped clamping blocks 903 at two sides, under the connecting and driving action of the driving motor 3 on the pulling component, the synchronous pulling shaft 4 at the left end rotates clockwise, the synchronous pulling shafts 4 at the left side and the right side are connected by chain transmission formed by two groups of pulling chain wheels 401 and pulling chains 402, thereby realizing the function of the homodromous and synchronous movement of the two groups of pulling chains 402, a plurality of groups of movable push beams 7 are fixedly connected in the middle of the two groups of pulling chains 402, the movable push beams 7 are pulled by the homodromous and synchronous movement of the two groups of pulling chains 402, the movable push beam 7 above the steel bar cutting machine moves rightwards, the steel bars are assisted to be transferred, in the process of transferring a plurality of steel bars, the plurality of groups of steel bars are clamped and fixed and synchronously pushed through the circulating push action of the plurality of groups of clamping mechanisms, the synchronism of steel bar feeding can be greatly improved, and the accuracy of steel bar cutting is further improved.

Finally, it should be noted that, when describing the positions of the components and the matching relationship therebetween, the present invention is usually illustrated by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other/other pairs of components.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims

1. The utility model provides a clamping mechanism for steel bar saw cuts numerical control machine which characterized in that includes: an outer support plate (1); the inner surface of the outer support plate (1) is fixedly connected with an inner circulation guide frame (2) through welding, the inner circulation guide frame (2) comprises an outer circulation rail (201) and an inner circulation rail (202), the outer support plate (1) is provided with two parts, and the middle parts of the two outer support plates (1) are fixedly connected through a connecting rod; the main body of the driving motor (3) is fixedly connected to the right side of the front outer support plate (1) through a screw, and the output end of the driving motor (3) is connected with and drives the dragging assembly; the traction component consists of two groups of synchronous traction shafts (4), and two ends of each synchronous traction shaft (4) are respectively and rotatably connected to the front and rear outer supporting plates (1); the trigger adsorption frame (5) is fixedly connected inside the inner circulation guide frame (2), the trigger adsorption frame (5) is located on the right side of the inner circulation guide frame (2), the trigger adsorption frame (5) is fixedly connected between the two inner circulation rails (202), the trigger adsorption frame (5) is located at the right end of the inner side of each inner circulation rail (202), the trigger adsorption frame (5) is a plate body with an arc-shaped structure, and an adsorption magnetic strip (501) with an iron arc-shaped strip body structure is fixedly connected to the outer surface of the trigger adsorption frame (5); the external auxiliary clamping cylinder (6), the external auxiliary clamping cylinder (6) is arranged on the right side of the external support plate (1); the two ends of the movable propelling beam (7) are respectively movably connected to the front and rear inner circulation guide frames (2), and the front end and the rear end of the movable propelling beam (7) are respectively and fixedly connected to the front and rear traction assemblies; the upper separation clamping block (8) is fixedly connected to the outer surface of the movable propelling beam (7), the upper separation clamping block (8) is a block body with a trapezoidal structure, two side faces of the upper separation clamping block (8) are processed into arc concave faces, two rectangular bidirectional guide sliding grooves (801) are transversely formed in the upper separation clamping block (8), and a built-in contraction groove (802) with a rectangular groove body structure is formed in the middle of the upper separation clamping block (8); an inner clamping assembly (9), the inner clamping assembly (9) is connected inside the upper separating and clamping block (8) in a sliding way, and the main body of the inner clamping component (9) is connected on the movable push beam (7) in a sliding way, the lower end of the inner clamping component (9) is fixedly connected with a magnetic attraction trigger block (901), the middle of the inner clamping component (9) is provided with a reset inner groove (902), the reset inner groove (902) is a rectangular groove body, the upper surface of the inner part of the inner reset groove (902) is fixedly connected with a reset spring (9021), two wedge-shaped clamping blocks (903) are arranged above the inner clamping component (9), the wedge-shaped clamping blocks (903) are rectangular blocks, the outer surface of the wedge-shaped clamping block (903) is a wedge-shaped surface, the lower surface of the wedge-shaped clamping block (903) is connected with a hinged connecting rod (9031) in a hinged mode, and the other end of the hinged connecting rod (9031) is connected to the upper end face of the inner clamping component (9) in a hinged mode.

2. The clamping mechanism for the numerical control steel bar sawing machine according to claim 1, characterized in that: the inner side of the inner circulation guide frame (2) is fixedly connected with a circulation outer rail (201) and a circulation inner rail (202), the circulation outer rail (201) and the circulation inner rail (202) are rectangular frame bodies with double round heads, the circulation outer rail (201) is arranged on the outer side of the circulation inner rail (202), and a gap is formed between the circulation outer rail (201) and the circulation inner rail (202).

3. The clamping mechanism for the numerical control steel bar sawing machine according to claim 1, characterized in that: two ends of the synchronous drawing shaft (4) are respectively and fixedly connected with a drawing chain wheel (401), and the synchronous drawing shaft (4) on the left side and the right side are in chain transmission connection through two groups of drawing chain wheels (401) and drawing chains (402).

4. The clamping mechanism for the numerical control steel bar sawing machine according to claim 1 or 3, characterized in that: the two ends of the movable propelling beam (7) are respectively provided with four guide end wheels (701), the two ends of the movable propelling beam (7) are respectively and fixedly connected with a chain connecting frame (702), the tail end of the chain connecting frame (702) is fixedly connected with a dragging chain (402), and the movable propelling beam (7) is provided with a lower guide groove (703) which is provided with a rectangular through groove structure in a penetrating mode.