Automatic angle steel feeding mechanism

Abstract

The utility model discloses an automatic angle steel feeding mechanism which comprises a material distributing device, a conveying and feeding device connected with the material distributing device and a length measuring device arranged on the conveying and feeding device. The material distributing device comprises a plurality of material distributing mechanisms connected with the conveying and feeding device. The conveying and feeding device comprises a conveying and feeding base and a plurality of conveying and feeding mechanisms; the conveying and feeding base is connected with the material distributing mechanism on the outermost side of the material distributing device, the conveying and feeding base drives the multiple conveying and feeding mechanisms through feeding lead screws to convey and automatically feed angle steel, and the conveying and feeding base and the conveying and feeding mechanisms are each provided with a material rolling table used for conveying the angle steel and a feeding mechanism arranged close to the tail end of the material rolling table. The tail end of a rolling table of the conveying and feeding mechanism is provided with a self-adaptive magnetic clamp for feeding angle steel into the feeding mechanism. The angle steel automatic feeding device can achieve automatic feeding of various kinds of angle steel, reduces manual participation, improves safety in the production process, reduces labor intensity, improves production efficiency and reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of angle steel feeding technology in mechanical manufacturing, and more specifically, to an automatic angle steel feeding mechanism. Background Technology

[0002] Angle steel is widely used in building construction, bridges, shipbuilding, port machinery, engineering machinery, and steel structures. The raw material length of angle steel is generally 6-12 meters, requiring secondary processing before use. Angle steel is divided into equal-sided and unequal-sided angle steel, and there are many specifications available. The national standard alone lists as many as 44 types of angle steel, with side lengths ranging from 20 to 250 mm and thicknesses from 3 to 35 mm. Currently, the main processing methods for angle steel include flame cutting, shearing, punching, and laser cutting.

[0003] In view of the above, there is an urgent need to design an automatic feeding mechanism for angle steel processing, which can reduce manual intervention in the feeding process, improve safety in the production process, reduce labor intensity, increase production efficiency, and reduce production costs. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic angle steel feeding mechanism that can realize the automatic feeding of various angle steels, reduce manual intervention, improve safety in the production process, reduce labor intensity, increase production efficiency, and reduce production costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides an automatic angle steel feeding mechanism, including a material distribution device, a conveying and feeding device connected to the material distribution device, and a length measuring device provided on the conveying and feeding device;

[0007] The material sorting device is used to sort the angle steel with positive and negative fasteners and to send the sorted angle steel into the conveying and feeding device. The material sorting device includes multiple material sorting mechanisms connected to the conveying and feeding device.

[0008] The conveying and feeding device is used to realize the automatic feeding of angle steel. The conveying and feeding device includes a conveying and feeding base and multiple conveying and feeding mechanisms. The conveying and feeding base is connected to the outermost feeding mechanism of the feeding device. The conveying and feeding base drives multiple conveying and feeding mechanisms through a lead screw to convey and automatically feed the angle steel. Both the conveying and feeding base and the conveying and feeding mechanisms are provided with a rolling platform for conveying angle steel and a feeding mechanism located near the end of the rolling platform. The end of the rolling platform of the conveying and feeding mechanism is equipped with an adaptive magnetic clamp for feeding the angle steel into the feeding mechanism.

[0009] The length measuring device is used to measure the length and detect the direction of the angle steel on the feeding mechanism.

[0010] Preferably, each material distribution mechanism includes a material distribution platform and a lifting device;

[0011] The material distribution platform is connected to the rolling platform of the conveying and feeding device; the material distribution platform is provided with a material distribution slope on the side near the rolling platform;

[0012] The lifting device includes a lifting seat mounted on the conveying and feeding device, a lifting cylinder mounted on the lifting seat, and a lifting frame connected to the output end of the lifting cylinder; the top of the lifting seat has a top surface parallel to the material distribution slope; the lifting frame is located near the material distribution slope of the material distribution platform, and the top surface of the lifting frame is parallel to the material distribution slope; the lifting device feeds the angle steel after material distribution into the rolling platform by lifting with a cylinder.

[0013] Preferably, the conveying and feeding base and the rolling platform of the conveying and feeding mechanism are provided with a feeding chain for conveying angle steel;

[0014] The feeding chain on the roller table of the conveying and feeding base is driven by a motor. The motor drives the feeding chains on multiple roller tables to convey and retract the angle steel through a lead screw.

[0015] Preferably, the feeding mechanism includes a feeding arm disposed near the end of the rolling table, a feeding motor for driving the feeding arm, and a centering clamping device disposed at the end of the feeding arm.

[0016] The feeding arm is mounted on the slider at the end of the rolling table via a guide rail;

[0017] The feeding motor drives the feeding arms on multiple feeding mechanisms to move back and forth along the rolling table via a feeding screw; the feeding arms mesh with the gears on the feeding screw via racks;

[0018] The centering clamping device is equipped with a cylinder for centering the angle steel.

[0019] Preferably, the adaptive magnetic clamp includes a clamp base, a clamp platform disposed on the clamp base, a cylinder disposed on the clamp platform, and a magnetic clamp connected to the cylinder;

[0020] The clamp base is mounted on the conveying and feeding mechanism via a track; the clamp base is connected to the translation motor via a chain; the clamp base is equipped with gears that are connected to the lifting motor;

[0021] The clamping platform is equipped with a rack that meshes with the gear of the clamping base, and the lifting motor drives the clamping platform to move up and down through the gear and rack;

[0022] The magnetic clamp is flipped by the extension and retraction of the cylinder, thereby adjusting the incoming state of the angle steel.

[0023] Preferably, the adaptive magnetic clamp further includes an inductive switch disposed on the clamp platform.

[0024] Preferably, the length measuring device includes a length measuring base disposed on the conveying and feeding device, a push rod mechanism movably connected to the length measuring base, and a direction detection device disposed on the push rod mechanism;

[0025] The length measuring base is provided with a guide rail for the top rod mechanism to move;

[0026] The push rod mechanism includes a push rod bracket movably connected to the guide rail, a motor driving the push rod bracket to move along the guide rail, and a push rod disposed on the push rod bracket;

[0027] The outermost conveying and feeding mechanism of the conveying and feeding device is provided with a side frame to prevent the angle steel from protruding. The side frame cooperates with the top rod to complete the length calculation of the angle steel.

[0028] The beneficial effects of this utility model are as follows:

[0029] 1. This utility model adopts different material sorting methods for different types of angle steel, and can automatically feed angle steel in different postures, thus improving the degree of automation.

[0030] 2. This utility model can achieve stable operation without shaking or impact during the angle steel feeding process, and reduces the deformation of angle steel during the material distribution and feeding process;

[0031] 3. This utility model avoids manual loading, handling, and turning during the angle steel feeding process, reducing labor costs and improving production efficiency;

[0032] 4. This utility model reduces manual intervention in the material feeding process and lowers the safety hazards of on-site construction. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the automatic angle steel feeding mechanism of this utility model;

[0034] Figure 2 This is a partial schematic diagram of the automatic angle steel feeding mechanism of this utility model;

[0035] Figure 3 This is a schematic diagram of the lifting device.

[0036] Figure 4 This is a schematic diagram of the feeding mechanism;

[0037] Figure 5 This is a schematic diagram of the adaptive magnetic clamp.

[0038] Figure 6 In the diagram, (a) shows the placement of angle steel in different incoming states; (b) is a schematic diagram of incoming state 1; and (c) is a schematic diagram of incoming state 2.

[0039] Figure 7 In the diagram, (a) is a schematic diagram of the angle steel in the incoming material state 1 being manually pushed into the lifting device after the angle steel is distributed on the material distribution platform; (b) is a schematic diagram of the lifting device's cylinder lifting the angle steel and sending it into the rolling platform.

[0040] Figure 8 This is a schematic diagram for judging the posture of the angle steel after it has been placed in place.

[0041] Figure 9 The diagrams show the gripping and material distribution of angle steel in different postures; (a) shows the gripping and material distribution of angle steel in posture 1; (b) shows the gripping and material distribution of angle steel in posture 2; and (c) shows the gripping and material distribution of angle steel in incoming material state 2.

[0042] Figure 10 (a) is a schematic diagram of the adaptive magnetic clamp adjusting the angle steel; (b) is a schematic diagram of the adaptive magnetic clamp rising after picking up the angle steel. Figure 2 A schematic diagram illustrating the adjustment of the angle steel into position using an adaptive magnetic clamp;

[0043] Figure 11 This is a schematic diagram showing how the platform behind the clamp feeds the adjusted angle steel into the centering and clamping position of the feeding device.

[0044] Figure 12 In the diagram, (a) is a schematic diagram of the length measuring device measuring the length of the angle steel; (b) is a schematic diagram of the direction detection device detecting the direction of the angle steel.

[0045] In the diagram, 10 is the material distribution mechanism; 11 is the material distribution platform; 111 is the material distribution inclined plane; 12 is the lifting device; 121 is the lifting seat; 122 is the lifting cylinder; 123 is the lifting frame; 20 is the conveying and feeding device; 21 is the conveying and feeding base; 22 is the conveying and feeding mechanism; 23 is the rolling platform; 231 is the feeding chain; 232 is the feeding motor; 233 is the feeding screw; 24 is the feeding mechanism; 241 is the feeding arm; 242 is the feeding motor; 243 is the feeding mechanism. 244. Feeding screw; 255. Centering clamping device; 26. Adaptive magnetic clamp; 27. Clamp base; 28. Clamp platform; 29. ​​Cylinder; 20. Magnetic clamp; 21. Lifting motor; 22. Gear; 23. Rack; 24. Inductive switch; 35. Length measuring device; 36. Length measuring base; 37. Top rod bracket; 38. Motor; 39. Top rod; 30. Direction detection device; 31. Side frame; 42. Angle steel. Detailed Implementation

[0046] To better understand the above-mentioned technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0047] The automatic angle steel feeding mechanism of this utility model can realize the automatic feeding of various angle steels, reducing manual intervention. This automatic angle steel feeding mechanism is suitable for the automatic feeding of angle steels with a length of 6 to 12m and a side length of 30 to 150mm.

[0048] Combination Figure 1 As shown, the automatic angle steel feeding mechanism of this utility model includes a material distribution device, a conveying and feeding device 20 connected to the material distribution device, and a length measuring device 30 disposed on the conveying and feeding device 20. The material distribution device is used to distribute the angle steel with interlocking fasteners and to feed the distributed angle steel into the conveying and feeding device 20. The material distribution device includes multiple material distribution mechanisms 10 connected to the conveying and feeding device 20. The conveying and feeding device 20 is used to automatically feed angle steel. The conveying and feeding device 20 includes a conveying and feeding base 21 and multiple conveying and feeding mechanisms 22. The conveying and feeding base 21 is connected to the outermost distributing mechanism 10 of the distributing device. The conveying and feeding base 21 drives the multiple conveying and feeding mechanisms 22 to convey and automatically feed the angle steel via a feeding screw 233. Both the conveying and feeding base 21 and the conveying and feeding mechanisms 22 are equipped with a rolling platform 23 for conveying the angle steel and a feeding mechanism 24 located near the end of the rolling platform 23. An adaptive magnetic clamp 25 is installed at the end of the rolling platform 23 of the conveying and feeding mechanism 22 to feed the angle steel into the feeding mechanism 24. The length measuring device 30 is used to measure the length and detect the direction of the angle steel on the feeding mechanism 24.

[0049] Combination Figure 1 , Figure 3As shown, each material distribution mechanism 10 includes a material distribution platform 11 and a lifting device 12. The material distribution platform 11 is connected to the rolling platform 23 of the conveying and feeding device 20; the material distribution platform 11 has a material distribution slope 111 on the side near the rolling platform 23; the material distribution platform 11 is mainly for incoming bundles of angle steel with front and back fasteners. This type of angle steel cannot be distributed by the rolling platform 23 and needs to be distributed manually on the material distribution platform 11. The lifting device 12 includes a lifting seat 121 mounted on the conveying and feeding device 20, a lifting cylinder 122 mounted on the lifting seat 121, and a lifting frame 123 connected to the output end of the lifting cylinder 122. The top of the lifting seat 121 is provided with a top surface parallel to the material distribution slope 111. The lifting frame 123 is located close to the material distribution slope 111 of the material distribution table 11, and the top surface of the lifting frame 123 is parallel to the material distribution slope 111. The lifting device 12 feeds the angle steel after material distribution into the rolling table 23 by lifting with a cylinder. Specifically, the angle steel is lifted by a cylinder to rise along the material distribution slope 111 until the top surface of the lifting frame 123 is slightly higher than the top surface of the lifting seat 121, and then the angle steel slides into the rolling table 23 along the top surface of the lifting seat 121.

[0050] Combination Figure 1 , Figure 2 As shown, the conveying and feeding base 21 and the conveying and feeding mechanism 22 have feeding chains 231 on their rolling platforms 23 for conveying angle steel. The feeding chains 231 on the rolling platforms 23 of the conveying and feeding base 21 are driven by a feeding motor 232. The feeding motor 232 drives the feeding chains 231 on multiple rolling platforms 23 through a feeding screw 233 to convey and retract the angle steel. This conveying and feeding device 20 uses the feeding motor 232 to drive the feeding screw 233 to drive the feeding chains 231 on the rolling platforms 23 to realize the function of conveying angle steel, ensuring that the angle steel reaches the designated position for posture judgment. In addition, the rolling platforms 23 can also retract through the feeding motor 232 to cooperate with the adaptive magnetic clamp 25 for angle steel distribution.

[0051] Combination Figure 1 , Figure 4As shown, the feeding mechanism 24 includes a feeding arm 241 located near the end of the rolling table 23, a feeding motor 242 driving the feeding arm 241, and a centering clamping device 244 located at the end of the feeding arm 241. The feeding arm 241 is mounted on a slider on the side of the end of the rolling table 23 via a guide rail; the feeding motor 242 is located near the end of the rolling table 23, and the feeding motor 242 drives the feeding arms 241 on multiple feeding mechanisms 24 to move back and forth along the rolling table 23 via a feeding screw 243; the feeding arm 241 meshes with a gear on the feeding screw 243 via a rack; the feeding arm 241 drives the feeding screw 243 and the gear to rotate via the feeding motor 242, and the gear drives the rack to realize the back and forth movement of the feeding arm 241. The centering clamping device 244 is equipped with a cylinder for centering the angle steel, which is installed inside the feeding arm 241; the centering clamping device 244 achieves the centering of the angle steel through the cylinder inside the feeding arm 241.

[0052] Combination Figure 1 , Figure 5 and Figure 9 As shown, the adaptive magnetic clamp 25 includes a clamp base 251, a clamp platform 252 mounted on the clamp base 251, a cylinder 253 mounted on the clamp platform 252, and a magnetic clamp 254 connected to the cylinder 253. The clamp base 251 is mounted on the conveying and feeding mechanism 22 via a track; the clamp base 251 is connected to a translation motor via a chain; the clamp base 251 has a gear 256 connected to a lifting motor 255. The clamp platform 252 has a rack 257 that meshes with the gear 256 of the clamp base 251. The lifting motor 255 drives the clamp platform 252 to move up and down via the gear 256 and the rack 257. The magnetic clamp 254 flips by extending and retracting the cylinder 253, thereby adjusting the incoming state of the angle steel. Figure 8 As shown, the adaptive magnetic clamp 25 also includes an induction switch 258 mounted on the clamp platform 252. When the angle steel is fed to the adaptive magnetic clamp 25 via the rolling table 23, the induction switch 258 identifies the incoming state of the angle steel. Then, the magnetic clamp 253 performs the angle steel picking action (see arrow M) and the rolling table 23 performs the backward action (see arrow N) to distribute the angle steel. The adaptive magnetic clamp 25 lifts the angle steel with a cylinder and adjusts the incoming state of the angle steel by flipping the magnetic clamp 253. The adaptive magnetic clamp 25 moves to the lower part of the angle steel by the lowering and backward actions of the clamp platform 252, and lifts the angle steel into the feeding mechanism 24 by the forward and upward actions of the clamp platform 252.

[0053] Combination Figure 1 , Figure 12As shown, the length measuring device 30 includes a length measuring base 31 mounted on the conveying and feeding device 20, a push rod mechanism movably connected to the length measuring base 31, and a direction detection device 35 mounted on the push rod mechanism. The length measuring base 31 is provided with a guide rail for the push rod mechanism to move. The push rod mechanism includes a push rod support 32 movably connected to the guide rail, a motor 33 driving the push rod support 32 to move along the guide rail, and a push rod 34 mounted on the push rod support 32; the motor 33 is mounted on the length measuring base 31. A side frame 36 is provided on the outermost conveying and feeding mechanism 22 of the conveying and feeding device 20 to prevent the angle steel from protruding. This side frame 36 cooperates with the push rod to complete the length measurement of the angle steel. The direction detection device 35 is fixed on the push rod support 32. The top rod of the length measuring device 30 is driven by a motor to push the angle steel forward until the angle steel hits the side frame 36 of the outermost conveying and feeding mechanism 22, thus completing the length measurement of the angle steel; the direction detection device 35 uses a cylinder to press down to determine the length of the unequal angle steel.

[0054] In a specific embodiment, the main parameters of the automatic angle steel feeding mechanism are shown in Table 1.

[0055] Table 1 Main parameters of the automatic angle steel feeding mechanism

[0056]

[0057]

[0058] In a specific embodiment, the range of angle steel parameters applicable to the automatic angle steel feeding mechanism can be found in Table 2.

[0059] Table 2 Applicable Angle Steel Parameter Range

[0060] name Size specifications and requirements Raw material length 6～12m Angle steel side length range 20~150mm Minimum wall thickness 3mm

[0061] Combination Figures 6-12 As shown, the usage process of the automatic angle steel feeding mechanism of this utility model is as follows:

[0062] (1) Depending on the different incoming material conditions, the angle steel bundles are manually hoisted onto the sorting platform 11 and the rolling platform 23 respectively. See Figure 6 As shown in (a); Figure 6 (b) is a schematic diagram of incoming material state 1. The entire bundle of angle steel is in a multi-layered, double-locked state. After the angle steel 40 in incoming material state 1 is hoisted to the sorting platform 11, it is manually sorted and pushed into the lifting device 12. Then, it is sent onto the rolling platform 23 by the lifting cylinder 122. See [reference needed]. Figure 7 As shown in (a) and (b); Figure 6 (c) is a schematic diagram of incoming material state 2. The whole bundle of angle steel is in a single layer in the same direction and can be placed directly on the rolling table 23.

[0063] (2) The angle steel is conveyed to the designated position on the rolling table 23 via the feeding chain. After the induction switch 258 senses the angle steel, it judges the angle steel's posture. See [reference needed] Figure 8 As shown.

[0064] (3) After the angle steel posture is determined, the adaptive magnetic clamp 25 adjusts its posture according to the angle steel posture and performs the angle steel picking action. After picking up the angle steel, the magnetic clamp moves in the direction of arrow M, while the rolling table 23 retracts in the direction of arrow N to separate the whole bundle of angle steel in the incoming state 2 and the angle steel with compression between them. This achieves the picking and separating of angle steel with different postures. See Figure 9 As shown in (a), (b), and (c).

[0065] (4) After the angle steel is gripped and moved to the designated position, the adaptive magnetic clamp 25 rises to the corresponding distance according to the size of the angle steel. After it is in place, the cylinder lifts in the direction of arrow K, causing the angle steel to rotate to the position where its long side is vertical. (See below) Figure 10 As shown in (a), the clamp is then released, allowing the angle steel to automatically flip into a reversed state due to gravity. See [reference needed]. Figure 10 As shown in (b).

[0066] (5) The adaptive magnetic clamp 25 moves its platform 252 to below the angle steel via a descent and translational motion. Then, through translation and descent, it places the angle steel into the centering clamping position of the feeding mechanism 24. (See [reference]) Figure 11 As shown.

[0067] (6) The centering clamping device 244 centers the angle steel using a cylinder. Then, the push rod of the length measuring device 30 pushes the angle steel to the outermost frame 36 of the outermost conveying and feeding mechanism 22 in the direction of arrow F, and then the length is measured. After the length measurement is completed, the direction detection device 35 detects the direction of the angle steel (this function is mainly for distinguishing the long and short sides of unequal angle steel). See [link to relevant documentation] Figure 12 As shown in (a) and (b).

[0068] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. An automatic angle steel feeding mechanism, characterized in that, It includes a material distribution device, a conveying and feeding device connected to the material distribution device, and a length measuring device disposed on the conveying and feeding device; The material sorting device is used to sort the angle steel with positive and negative fasteners and to send the sorted angle steel into the conveying and feeding device. The material sorting device includes multiple material sorting mechanisms connected to the conveying and feeding device. The conveying and feeding device is used to realize the automatic feeding of angle steel. The conveying and feeding device includes a conveying and feeding base and multiple conveying and feeding mechanisms. The conveying and feeding base is connected to the outermost feeding mechanism of the feeding device. The conveying and feeding base drives multiple conveying and feeding mechanisms to convey and automatically feed angle steel through a feeding screw. Both the conveying and feeding base and the conveying and feeding mechanisms are provided with a rolling platform for conveying angle steel and a feeding mechanism located near the end of the rolling platform. The end of the rolling platform of the conveying and feeding mechanism is equipped with an adaptive magnetic clamp to feed the angle steel into the feeding mechanism. The length measuring device is used to measure the length and detect the direction of the angle steel on the feeding mechanism.

2. The automatic angle steel feeding mechanism according to claim 1, characterized in that: Each material distribution mechanism includes a material distribution platform and a lifting device; The material distribution platform is connected to the rolling platform of the conveying and feeding device; the material distribution platform is provided with a material distribution slope on the side near the rolling platform; The lifting device includes a lifting seat mounted on the conveying and feeding device, a lifting cylinder mounted on the lifting seat, and a lifting frame connected to the output end of the lifting cylinder; the top of the lifting seat has a top surface parallel to the material distribution slope; the lifting frame is located near the material distribution slope of the material distribution platform, and the top surface of the lifting frame is parallel to the material distribution slope; the lifting device feeds the angle steel after material distribution into the rolling platform by lifting with a cylinder.

3. The automatic angle steel feeding mechanism according to claim 1, characterized in that: The conveying and feeding base and the conveying and feeding mechanism are equipped with a feeding chain for conveying angle steel; The feeding chain on the roller table of the conveying and feeding base is driven by a feeding motor. The feeding motor drives the feeding chains on multiple roller tables to convey and retract the angle steel through a feeding screw.

4. The automatic angle steel feeding mechanism according to claim 1, characterized in that: The feeding mechanism includes a feeding arm located near the end of the rolling table, a feeding motor that drives the feeding arm, and a centering clamping device located at the end of the feeding arm. The feeding arm is mounted on the slider at the end of the rolling table via a guide rail; The feeding motor drives the feeding arms on multiple feeding mechanisms to move back and forth along the rolling table via a feeding screw; the feeding arms mesh with the gears on the feeding screw via racks; The centering clamping device is equipped with a cylinder for centering the angle steel.

5. The automatic angle steel feeding mechanism according to claim 1, characterized in that: The adaptive magnetic clamp includes a clamp base, a clamp platform disposed on the clamp base, a cylinder disposed on the clamp platform, and a magnetic clamp connected to the cylinder; The clamp base is mounted on the conveying and feeding mechanism via a track; the clamp base is connected to the translation motor via a chain; the clamp base is equipped with gears that are connected to the lifting motor; The clamping platform is equipped with a rack that meshes with the gear of the clamping base, and the lifting motor drives the clamping platform to move up and down through the gear and rack; The magnetic clamp is flipped by the extension and retraction of the cylinder, thereby adjusting the incoming state of the angle steel.

6. The automatic angle steel feeding mechanism according to claim 5, characterized in that: The adaptive magnetic clamp also includes an inductive switch disposed on the clamp platform.

7. The automatic angle steel feeding mechanism according to claim 1, characterized in that: The length measuring device includes a length measuring base mounted on the conveying and feeding device, a push rod mechanism movably connected to the length measuring base, and a direction detection device mounted on the push rod mechanism. The length measuring base is provided with a guide rail for the top rod mechanism to move; The push rod mechanism includes a push rod bracket movably connected to the guide rail, a motor driving the push rod bracket to move along the guide rail, and a push rod disposed on the push rod bracket; The outermost conveying and feeding mechanism of the conveying and feeding device is equipped with a side frame to prevent the angle steel from protruding. The side frame cooperates with the top rod to complete the length calculation of the angle steel. The direction detection device is fixed on the top rod bracket.

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