CN114368594A

CN114368594A - Section steel numerical control feeding automatic clamping device for section steel processing production line

Info

Publication number: CN114368594A
Application number: CN202110096299.5A
Authority: CN
Inventors: 陈广先
Original assignee: Shandong Shanxin Information Technology Co ltd
Current assignee: Shandong Shanxin Information Technology Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2022-04-19

Abstract

The invention discloses a section steel numerical control feeding automatic clamping device for a section steel processing production line, and belongs to the technical field of section steel processing production equipment. The numerical control feeding trolley comprises a feeding channel and a numerical control feeding trolley which is arranged on the feeding channel and can move along the feeding channel, wherein the numerical control feeding trolley is provided with a clamping rod and a clamping head, and the numerical control feeding trolley is characterized in that: the numerical control feeding trolley is provided with a clamp lifting mechanism, and the clamp rod is connected with the clamp lifting mechanism in a horizontally movable manner through a supporting slide block mechanism; a clamp rod blocking signal distinguishing mechanism is arranged between the clamp rod and the support sliding block mechanism; the front part of the tail end section steel trough of the feeding channel is provided with a section steel fixing mechanism, and the tail end section steel trough of the feeding channel is provided with a clamp rod guide mechanism. The invention can ensure automatic clamping in the medium-sized steel numerical control feeding of the profile steel processing production line, can realize full automation of profile steel processing, and can greatly improve the production efficiency.

Description

Section steel numerical control feeding automatic clamping device for section steel processing production line

Technical Field

The invention relates to a section steel numerical control feeding automatic clamping device for a section steel processing production line, and belongs to the technical field of section steel processing.

Background

At present in the shaped steel processing field, shaped steel processing equipment belongs to ripe equipment, including shaped steel material loading, numerical control feeding, carry out typing mark, dashing (boring) hole, cut (sawing) and cut the class to the shaped steel. Still need artifical clamping in the clamping process is sent in to shaped steel numerical control, and this link has reduced equipment efficiency, has increased the use cost of equipment.

The existing equipment carries out section steel feeding in the following modes: the numerical control feeding trolley is arranged on the feeding channel and moves along the length direction of the feeding channel, a clamp rod is arranged on the numerical control feeding trolley, and a clamp on the clamp rod clamps the section steel for numerical control feeding, as shown in figures 1 and 2; after the last workpiece is machined, the numerical control feeding trolley retreats, the clamp rod is turned over in the retreating process, as shown in fig. 3, the feeding device starts to convey the section steel to the feeding channel at the moment, and the clamp rod falls down when the numerical control feeding trolley moves to the rear end of the section steel, so that the section steel is clamped in the next step. When the profile steel is clamped, an operator manually pushes the profile steel to be combined with the clamp head, then presses down a profile steel clamping button to clamp a workpiece, and then starts numerical control feeding processing. The process needs manual intervention, the production efficiency is reduced, and equipment is a technical obstacle when an automatic production line is upgraded.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a section steel numerical control feeding automatic clamping device for a section steel processing production line, which is convenient for realizing the automation of section steel processing.

The invention is realized by the following technical scheme: the utility model provides a shaped steel processing lines shaped steel numerical control feeds self-holding's device, is provided with tong pole and clamping head, characterized by including feeding way, install on feeding way and can follow the numerical control pay-off dolly that feeding way removed, numerical control pay-off dolly on the dolly: the numerical control feeding trolley is provided with a clamp lifting mechanism, and the clamp rod is connected with the clamp lifting mechanism in a horizontally movable manner through a supporting slide block mechanism; a clamp rod blocking signal distinguishing mechanism is arranged between the clamp rod and the support sliding block mechanism; the front part of the tail end section steel trough of the feeding channel is provided with a section steel fixing mechanism, and the tail end section steel trough of the feeding channel is provided with a clamp rod guide mechanism.

In the invention, the clamp rod can move along the horizontal direction through the supporting slide block mechanism. The clamp rod is connected with the clamp lifting mechanism through the supporting slide block mechanism, and the clamp rod can lift through the clamp lifting mechanism so as to avoid the section steel in the feeding process. The clamp rod blocking signal distinguishing mechanism arranged between the clamp rod and the support sliding block mechanism is used for distinguishing a state that the clamp rod is required to be clamped when being touched in the advancing process of the clamp rod and a state that the clamp rod is really subjected to external resistance in the processing advancing process of a clamping workpiece in the process that the numerical control feeding trolley drives the clamp rod to advance so as to ensure the automatic clamping of the profile steel. The profile steel fixing mechanism arranged at the front part of the tail end profile steel trough of the feeding channel is used for fixing the profile steel on the feeding channel, and the profile steel is kept stable when the clamp head clamps the profile steel. The clamp rod guide mechanism arranged in the section steel trough at the tail end of the feeding channel is used for ensuring the position accuracy of the clamp head and the accuracy of the clamp head in automatic section steel clamping.

Furthermore, the mechanism for distinguishing the signal when the clamp rod encounters resistance is a buffer cylinder/a buffer oil cylinder, the support slider mechanism comprises a support slider and a support linear guide rail arranged on the clamp rod, the support slider is slidably arranged on the support linear guide rail, one end of the buffer cylinder buffer oil cylinder is connected with the clamp rod, the other end of the buffer cylinder buffer oil cylinder is connected with the support slider, and the clamp rod is connected with the clamp lifting mechanism through the support slider; the air circuit/oil circuit of the buffer cylinder/buffer oil cylinder is connected in parallel with a high-pressure air circuit/oil circuit and a low-pressure air circuit/oil circuit, the high-pressure air circuit/oil circuit and the low-pressure air circuit/oil circuit are respectively provided with a pressure regulating valve and a switch, and the buffer cylinder/buffer oil cylinder is provided with a magnetic switch connected with an electric control system. Before the clamp head clamps the section steel, the buffer cylinder/buffer oil cylinder adopts a low-pressure gas circuit/oil circuit, and the buffer cylinder/buffer oil cylinder is converted into a high-pressure gas circuit/oil circuit after clamping the section steel. After the clamp head touches the profile steel in the advancing process, the clamp rod can retreat due to the fact that the profile steel is fixed, a piston rod of the buffer cylinder/the buffer oil cylinder is driven to move backwards, a magnetic ring on the piston rod triggers the magnetic switch and then sends a clamp resistance meeting signal, and the electric control system controls the clamp head to clamp the profile steel according to the signal sent by the magnetic switch.

Furthermore, the mechanism for distinguishing the signal when the clamp rod encounters the resistance comprises a guide shaft and a compression spring sleeved on the guide shaft, the supporting slide block mechanism comprises a supporting slide block and a supporting linear guide rail arranged on the clamp rod, the supporting slide block is arranged on the supporting linear guide rail in a sliding mode, one end of the guide shaft is connected with the clamp rod, the other end of the guide shaft is connected with the supporting slide block, and the supporting slide block is provided with an induction switch. The electric control system distinguishes the blocking state of the clamp rod through the difference of the compression amount of the spring according to the signal sent by the inductive switch, thereby controlling the clamp head to clamp the section steel. After the clamp head touches the section steel in the advancing process, the clamp rod retreats to drive the guide shaft to move backwards and compress the compression spring, the guide shaft triggers the induction switch to send a clamp resistance meeting signal, and the electric control system controls the clamp head to clamp the section steel according to the signal sent by the induction switch.

Further, shaped steel fixed establishment include fixed establishment frame, shaped steel press from both sides tight piece, with power cylinder, initiative drive rack, driven drive rack, two synchronous gears that the fixed establishment frame is connected, initiative drive the rack with driven drive rack is 90 and sets up the both sides of fixed establishment frame, two synchronous gears are connected respectively and are set up both ends of synchronizing shaft in the fixed establishment frame and respectively with initiative drive rack with driven drive rack meshing, initiative drive the rack with be connected with one respectively on the driven drive rack shaped steel presss from both sides tight piece, power cylinder with initiative drive rack connection, fixed establishment frame and feeding way fixed connection. The section steel fixing mechanism is suitable for fixing an angle steel workpiece, can drive a driving rack to move through a power cylinder, and synchronously drives a driven driving rack to move through meshing transmission of a rack and a gear, so that two section steel clamping blocks are driven to move to fix the workpiece.

Furthermore, in order to ensure the accuracy of the position of the clamp head when clamping the section steel, a lower elastic supporting mechanism is also arranged in the section steel trough at the tail end of the feeding channel. The clamp rod can be supported by the lower elastic supporting mechanism, and the accuracy of the position of the clamp head is ensured.

Furthermore, the clamp rod guide mechanism comprises a left side guide plate and a right side guide plate, the lower ends of the left side guide plate and the right side guide plate are fixedly connected with the bottom of the tail end section steel trough of the feeding channel, and the lower elastic support mechanism is arranged in a guide groove between the left side guide plate and the right side guide plate and is connected with the bottom of the tail end section steel trough of the feeding channel. The guide slot that the accessible was formed by left side baffle and right side baffle in the advance process of tong pole is led, guarantees the accuracy of tong head position.

Furthermore, the lifting power mechanism of the clamp lifting mechanism is an oil cylinder, an air cylinder or a lead screw.

Furthermore, the clamp lifting mechanism comprises a lifting frame which is vertically arranged, a lifting guide rail is arranged on the lifting frame, a lifting slide block is arranged on the lifting guide rail, the supporting slide block mechanism is connected with the lifting slide block, and the lifting slide block is connected with a lifting power mechanism.

The invention has the beneficial effects that: according to the invention, the clamp rod is designed into a vertical lifting structure, so that the clamp rod can be lifted and avoided to feed materials to the feeding channel during feeding; by arranging the mechanism for distinguishing the resistance signal of the clamp rod, the state that the clamp rod is contacted with the section steel to be clamped in the advancing process and the state that the clamp rod is really contacted with external resistance can be distinguished, and the automatic clamping of the section steel is ensured; the clamp rod guide mechanism is arranged in the end section steel material groove, so that the accuracy of the position of a clamp head can be ensured, and the workpiece can be accurately clamped when automatically clamped; through setting up shaped steel fixed establishment in terminal shaped steel silo front portion, can fix shaped steel for guarantee the stability of shaped steel when the automatic centre gripping shaped steel of clamp, accuracy when guaranteeing the automatic centre gripping of clamp. The automatic clamping device can ensure the automatic clamping in the numerical control feeding of the medium-sized steel in the section steel processing production line by the technical means, can realize the full automation of section steel processing, overcomes the technical obstacles existing in the upgrading of the section steel processing production line to the automatic production line in the prior art, can realize the full automation of the section steel processing production line, and can greatly improve the production efficiency.

Drawings

FIG. 1 is a schematic structural view of a numerical control feeding trolley and a feeding channel in a section steel processing production line in the prior art;

FIG. 2 is a schematic side view of FIG. 1;

FIG. 3 is a schematic view of the clamping lever of FIG. 1 in an inverted position;

FIG. 4 is a schematic structural view of a numerical control feeding trolley and a feeding channel in the invention;

FIG. 5 is an enlarged side view of FIG. 4;

FIG. 6 is a schematic top view of FIG. 4;

FIG. 7 is a rear view schematic of FIG. 4;

FIG. 8 is a schematic structural view of a numerically controlled feeding cart in embodiment 1 of the present invention;

FIG. 9 is a schematic view A-A of FIG. 8;

FIG. 10 is a schematic top view of FIG. 9;

FIG. 11 is a rear schematic view of FIG. 8 (with the clamp rod portion not shown);

FIG. 12 is a schematic view showing the connection between the clamp lever and the cushion cylinder/cushion cylinder in embodiment 1 of the present invention;

FIG. 13 is a top schematic view of FIG. 12;

FIG. 14 is an air path diagram of the cushion cylinder of FIG. 12;

FIG. 15 is a schematic view showing the structure of a steel trough at the end of a feed chute according to the present invention;

FIG. 16 is a top view of FIG. 15;

FIG. 17 is a side view of FIG. 15;

FIG. 18 is a schematic structural view of a section steel fixing mechanism in example 1 of the invention;

FIG. 19 is a left side view of FIG. 18;

FIG. 20 is a rear view of FIG. 18;

FIG. 21 is a schematic view showing the connection of the section steel fixing mechanism to the feed passage in example 1 of the present invention;

FIG. 22 is a schematic structural view of a mechanism for discriminating a jamming signal of a clamp lever according to embodiment 2 of the present invention;

FIG. 23 is a top schematic view of FIG. 22;

in the figure, 1, a feeding channel, 2, a numerical control feeding trolley, 3, a clamp rod, 4, a clamp head, 5, a clamp rod rotating shaft, 6, a clamp cylinder, 7, a buffer cylinder/buffer oil cylinder, 701, a high-pressure air path, 702, a low-pressure air path, 703, a pressure regulating valve of the high-pressure air path, 704, a pressure regulating valve of the low-pressure air path, 705, a pneumatic switch of the high-pressure air path, 706, a pneumatic switch of the low-pressure air path, 707, a silencer, 8, a tail-end section steel trough, 801, a roller, 9, a section steel fixing mechanism, 901, a power cylinder, 902, a driving rack, 903, a driven rack, 904, a section steel pressing block, 905, a synchronous gear, 906, a synchronous shaft, 907, a fixing mechanism frame, 10, a clamp lifting mechanism, 101, a lifting slide block, 102, a lifting guide rail, 103, an oil cylinder/air cylinder, 104, a lifting frame, 11, a supporting slide block, 12 and a supporting linear guide rail, 13. motor, 14, rack, 15, gear, 16, clamp guide mechanism, 161, left guide plate, 162, right guide plate, 17, lower elastic support mechanism, 18, inductive switch, 19, guide shaft, 20 and compression spring.

Detailed Description

The invention will now be further illustrated by way of non-limiting examples in conjunction with the accompanying drawings:

example 1

As shown in the attached fig. 4-21, the device for automatically clamping the section steel in the section steel processing production line by numerical control feeding comprises a feeding channel 1 and a numerical control feeding trolley 2 which is arranged on the feeding channel 1 and can move along the feeding channel. The feeding channel 1 and the numerical control feeding trolley 2 are both in the prior art, a rack 14 is arranged on the feeding channel 1 along the length direction of the feeding channel, the numerical control feeding trolley 2 is arranged on the feeding channel 2, a gear 15 is arranged on the numerical control feeding trolley 2 and is meshed with the rack 14 arranged on the feeding channel 1, and the numerical control feeding trolley 2 is driven by a motor 13 of the numerical control feeding trolley and moves along the feeding channel 1 through the meshing transmission of the gear and the rack. The numerical control feeding trolley 2 is provided with a clamp rod 3 and a clamp head 4, the clamp rod 3 and the clamp head 4 are in the prior art, the clamp head 4 is arranged at the front end of the clamp rod 3, and the clamp cylinder 6 connected with the clamp head is used for clamping the clamp head. The method is characterized in that: the numerical control feeding trolley 2 is provided with a clamp lifting mechanism 10, and the clamp rod 3 is connected with the clamp lifting mechanism 10 in a horizontally movable manner through a supporting slide block mechanism. In this embodiment, the clamp lifting mechanism 10 includes a vertically arranged lifting frame 104, the lifting frame 104 is connected to the numerical control feeding trolley, a lifting guide rail 102 is arranged on the lifting frame 104, a lifting slide block 101 is arranged on the lifting guide rail 102, the support slide block mechanism includes a support slide block 11 and a support linear guide rail 12 arranged on the clamp rod 3, the support slide block 11 is slidably arranged on the support linear guide rail 12, and the support slide block 11 is fixedly connected with the lifting slide block 101 through a connecting plate. The lifting power mechanism of the clamp lifting mechanism 10 may be any lifting mechanism in the prior art, and in this embodiment, an oil cylinder or an air cylinder 13 is preferably adopted, the oil cylinder or the air cylinder 13 is connected with the lifting slide block 101, and the oil cylinder or the air cylinder 13 can drive the lifting slide block 101 to lift along the lifting guide rail 102, so as to drive the clamp rod 3 and the clamp head 4 to lift. And a clamp rod blocking signal distinguishing mechanism is arranged between the clamp rod 3 and the support sliding block mechanism and is used for distinguishing a state that the clamp rod is in contact with the profile steel to implement clamping in the advancing process of the clamp rod driven by the numerical control feeding trolley and a state that the clamp rod is in contact with external resistance in the machining advancing process of a clamping workpiece so as to ensure the automatic clamping of the profile steel. In this embodiment, the mechanism for distinguishing the signal when the clamping rod encounters the resistance may be a buffer cylinder 7 or a buffer oil cylinder 7. In this embodiment, a buffer cylinder is taken as an example, one end of the buffer cylinder 7 is connected to the clamping rod 3, and the other end thereof is connected to the supporting slider 11. The air path of the buffer cylinder 7 is connected in parallel with a high-pressure air path 701 and a low-pressure air path 702, the high-pressure air path is provided with a pressure regulating valve 703 and a pneumatic switch 705 which have an overflow function, and the low-pressure air path 702 is provided with a pressure regulating valve 704 and a pneumatic switch 706 which have an overflow function, wherein the pneumatic switch 705 on the high-pressure air path is normally open, and the pneumatic switch 706 on the low-pressure air path is normally closed. And the buffer cylinder 7 is provided with a magnetic switch connected with an electric control system. When the clamp rod 3 pushes the buffer cylinder 7 to compress through the support slider 11 if meeting resistance in the process of driving the section steel to move forwards, the piston rod of the buffer cylinder 7 moves backwards, the magnetic ring on the piston rod triggers the magnetic switch to send a clamp resistance meeting signal, and the program distinguishes the resistance meeting reason according to different air inlet pressures of the buffer cylinder 7, so that the automatic clamping of the section steel is ensured. When the clamp rod meets the resistance signal distinguishing mechanism and adopts the buffer oil cylinder, the connection mode and the oil circuit arrangement are basically the same as those of the buffer air cylinder, and the description is omitted. And a section steel fixing mechanism 9 is arranged at the front part of a section steel trough 8 at the tail end of the feeding channel 1 and used for fixing section steel. The specific structure of the section steel fixing mechanism 9 can adopt different fixing structures according to different shapes of workpieces. Shown in the embodiment is a section steel fixing mechanism for fixing angle steel, which comprises a fixing mechanism frame 907, a section steel clamping block 904, a power cylinder 901 connected with the fixing mechanism frame 907, a driving rack 902, a driven driving rack 903 and two synchronizing gears 905. The fixing mechanism frame 907 is fixed on the feeding channel 1, the driving rack 902 and the driven driving rack 903 are arranged on two sides of the fixing mechanism frame 907 in a 90-degree angle, two synchronizing gears 905 are respectively connected to two ends of a synchronizing shaft 906 and are respectively meshed with the driving rack 902 and the driven driving rack 903, the synchronizing shaft 906 is arranged on the fixing mechanism frame 907, the driving rack 902 and the driven driving rack 903 are respectively connected with a section steel clamping block 904, and the power cylinder 901 is connected with the driving rack 902. The power cylinder 901 can drive the driving rack 902 to move, and the synchronizing gear 905 can drive the driven driving rack 903 to synchronously move, so that the two section steel clamping blocks 904 are driven to synchronously clamp or loosen workpieces. And a clamp rod guide mechanism 16 is arranged in the tail-end steel trough 8 of the feeding channel, and the clamp rod guide mechanism 16 is used for guiding the clamp rod so as to ensure the position accuracy of a clamp head when clamping a workpiece. In this embodiment, the gripper bar guide mechanism 16 includes a left guide plate 161 and a right guide plate 162, the lower ends of the left guide plate 161 and the right guide plate 162 are fixedly connected to the bottom of the steel trough 8 at the end of the feeding channel, and a guide groove is formed between the left guide plate 161 and the right guide plate 162. In this embodiment, a plurality of lower elastic support mechanisms 17 are further disposed in the end section steel trough 8 of the feeding channel 1, the lower elastic support mechanisms 17 are disposed in the guide groove between the left guide plate 161 and the right guide plate 162 and connected to the bottom of the end section steel trough 8 of the feeding channel, and the lower elastic support mechanisms 17 are spaced along the bottom of the end section steel trough 8. The lower elastic supporting mechanism 17 adopts a spring structure, and the clamping rod 3 can be supported through the lower elastic supporting mechanism 17, so that the accuracy of the position of the clamping head is ensured.

When the numerical control feeding device works, the numerical control feeding trolley 2 is arranged on the feeding channel 1 and moves along the length direction of the feeding channel, so that numerical control movement and position accurate control can be realized; when feeding, the numerical control feeding trolley 2 moves to the tail end of the feeding channel 1, the clamp rod 3 is positioned at the upper position in the movement process, the section steel is moved to the feeding channel 1 by other devices in the movement process, and the tail end of the section steel is fixed on the feeding channel 1 through the section steel fixing mechanism 9 after entering the tail end section steel trough 8 of the feeding channel, so that the section steel cannot move along the length direction; the numerical control feeding trolley 2 starts to move to contact the section steel (the clamp rod 3 is in a lower position), the clamp rod 3 is blocked, the program can judge the reason of the blockage (the clamp head is completely contacted and attached with the section steel), the control system controls the clamp head 4 to clamp the section steel, then the section steel fixing mechanism 9 loosens the section steel, and the conventional numerical control feeding working mode is entered. The automatic clamping of the section steel is realized through the steps.

Other parts in this embodiment are the prior art, and are not described herein again.

The section steel of the invention refers to angle steel, channel steel or section steel similar to the shape of the angle steel, channel steel or section steel, such as C-shaped steel and the like.

Example 2

As shown in fig. 22 to 23, this embodiment is basically the same as embodiment 1 except that the mechanism for discriminating the signal of occurrence of a clamp lever in this embodiment is different from embodiment 1. In this embodiment, the mechanism for distinguishing the blocking signal when the clamp rod encounters includes a guide shaft 19 and a compression spring 20 sleeved on the guide shaft 19, one end of the guide shaft 19 is connected with the clamp rod 3, the other end of the guide shaft is connected with the support slider 11, and the support slider 11 is provided with two inductive switches 18. The electric control system can distinguish the state of the clamping rod in resistance through the difference of the compression amount of the spring according to the signal sent by the inductive switch, thereby controlling the clamping head to clamp the section steel. After the clamp head touches the section steel in the advancing process, the clamp rod retreats to drive the guide shaft to move backwards and compress the compression spring, the guide shaft triggers the induction switch to send a clamp resistance meeting signal, and the electric control system controls the clamp head to clamp the section steel according to the signal sent by the induction switch.

The other portions in this embodiment are the same as those in embodiment 1.

Claims

1. The utility model provides a shaped steel processing lines shaped steel numerical control feeds self-holding's device, is provided with tong pole (3) and tong head (4), characterized by including feeding way (1), install on feeding way (1) and can follow feeding way removal numerical control pay-off dolly (2) on numerical control pay-off dolly (2): a clamp lifting mechanism (10) is arranged on the numerical control feeding trolley (2), and the clamp rod (3) is horizontally movably connected with the clamp lifting mechanism (10) through a supporting slide block mechanism; a clamp rod blocking signal distinguishing mechanism is arranged between the clamp rod (3) and the support sliding block mechanism; the front part of the tail end section steel trough (8) of the feeding channel (1) is provided with a section steel fixing mechanism (9), and the tail end section steel trough (8) of the feeding channel is internally provided with a clamp rod guide mechanism (16).

2. The numerical control feeding and automatic clamping device for section steel of the section steel processing production line according to claim 1, which is characterized in that: the mechanism for distinguishing the signal when the clamping rod meets the resistance is a buffer cylinder/buffer oil cylinder (7), the support slider mechanism comprises a support slider (11) and a support linear guide rail (12) arranged on the clamping rod (3), the support slider (11) is arranged on the support linear guide rail (12) in a sliding manner, one end of the buffer cylinder/buffer oil cylinder (7) is connected with the clamping rod (3), the other end of the buffer cylinder/buffer oil cylinder is connected with the support slider (11), and the clamping rod (3) is connected with the clamp lifting mechanism (10) through the support slider (11); the air circuit/oil circuit of the buffer cylinder/buffer oil cylinder (7) is connected in parallel with a high-pressure air circuit/oil circuit and a low-pressure air circuit/oil circuit, the high-pressure air circuit/oil circuit and the low-pressure air circuit/oil circuit are respectively provided with a pressure regulating valve and a switch, and the buffer cylinder/buffer oil cylinder (7) is provided with a magnetic switch connected with an electric control system.

3. The numerical control feeding and automatic clamping device for section steel of the section steel processing production line according to claim 1, which is characterized in that: the mechanism for distinguishing the signal when the clamping rod is blocked comprises a guide shaft (19) and a compression spring (20) sleeved on the guide shaft (19), the supporting slide block mechanism comprises a supporting slide block (11) and a supporting linear guide rail (12) arranged on the clamping rod (3), the supporting slide block (11) is arranged on the supporting linear guide rail (12) in a sliding mode, one end of the guide shaft (19) is connected with the clamping rod (3), the other end of the guide shaft is connected with the supporting slide block (11), and an induction switch is arranged on the supporting slide block (11).

4. The numerical control feeding and automatic clamping device for section steel of the section steel processing production line according to claim 1, which is characterized in that: the section steel fixing mechanism (9) comprises a fixing mechanism rack (907), a section steel clamping block (904), a power cylinder (901) connected with the fixing mechanism rack (907), a driving rack (902), a driven driving rack (903) and two synchronizing gears (905), wherein the driving rack (902) and the driven rack (903) are arranged on two sides of the fixing mechanism rack (907) in an angle of 90 degrees, the two synchronizing gears (905) are respectively connected to two ends of a synchronizing shaft (906) arranged on the fixing mechanism rack (907) and are respectively meshed with the driving rack (902) and the driven rack (903), the driving rack (902) and the driven rack (903) are respectively connected with the section steel clamping block (904), and the power cylinder (901) is connected with the driving rack (902), the fixed mechanism frame (907) is fixedly connected with the feeding channel (1).

5. The numerical control feeding and automatic clamping device for section steel of the section steel processing production line according to claim 1, which is characterized in that: and a lower elastic supporting mechanism (17) is also arranged in the tail end section steel trough (8) of the feeding channel (1).

6. The numerical control feeding and automatic clamping device for section steel of the section steel processing production line according to claim 5, which is characterized in that: the clamp rod guide mechanism (16) comprises a left side guide plate (161) and a right side guide plate (162), the lower ends of the left side guide plate (161) and the right side guide plate (162) are fixedly connected with the bottom of the tail end type steel trough (8) of the feeding channel, and the lower elastic support mechanism (17) is arranged in a guide groove between the left side guide plate (161) and the right side guide plate (162) and is connected with the bottom of the tail end type steel trough (8) of the feeding channel.

7. The numerical control feeding and automatic clamping device for section steel of a section steel processing production line according to claim 1, 2, 3, 4, 5 or 6, characterized in that: and the lifting power mechanism of the clamp lifting mechanism is an oil cylinder, an air cylinder or a lead screw.

8. The numerical control feeding automatic clamping device for section steel of the section steel processing production line according to claim 7, which is characterized in that: the clamp lifting mechanism (10) comprises a lifting frame (104) which is vertically arranged, a lifting guide rail (102) is arranged on the lifting frame (104), a lifting slide block (101) is arranged on the lifting guide rail (102), the supporting slide block mechanism is connected with the lifting slide block (101), and the lifting slide block (101) is connected with a lifting power mechanism.