Round steel fixed shaft feeding device

Abstract

The utility model discloses a round steel fixed shaft feeding device which comprises a machine frame, the machine frame is provided with an upper support plate and a lower support plate, the upper support plate is rotationally connected with the machine frame through an upper support plate shaft, and the lower support plate is rotationally connected with the machine frame through a lower support plate shaft. The upper support plate shaft is provided with an upper support plate gear, the lower support plate shaft is provided with a lower support plate gear, and the upper support plate gear is meshed with the lower support plate gear. An air cylinder seat is arranged above the upper support plate, an air cylinder is rotationally connected with the air cylinder seat through a first air cylinder rotating shaft and rotationally connected with the upper support plate through a second air cylinder rotating shaft, the air cylinder drives the upper support plate to rotate with the upper support plate shaft as the axis, and the upper support plate drives the lower support plate to rotate with the lower support plate shaft as the axis. The upper conveying wheel set of the upper support plate and the lower conveying wheel set of the lower support plate clamp and convey round steel. By means of the rotating upper support plate and the rotating lower support plate, coaxiality of round steel and the feeding port is kept, and fixed-axis conveying of the round steel is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wear-resistant steel ball production equipment, in particular to a round steel fixed-axis feeding device for supplying round steel to a steel ball forging machine. Background Art

[0002] A steel ball forging machine is an automated production device for wear-resistant steel balls that heats, cuts, and punches round steel into steel balls. For example, a steel ball rapid forging machine disclosed in Authorization Publication No. CN218873625U features a feeding mechanism that delivers heated bar stock into a feed hole. A cutting mechanism cuts the bar stock that emerges from the feed hole and pushes the cut stock to a fixed die. A slider mechanism drives a movable die in conjunction with the fixed die to forge the cut stock into steel balls. The feeding mechanism includes a feeding frame, on which are positioned an upper roller assembly and a lower roller assembly arranged opposite each other. The upper roller assembly includes two upper bearing seats on the left and right sides, with an upper roller shaft extending between the upper bearing seats and an upper roller attached to the upper roller shaft. The lower roller assembly includes two lower bearing seats on the left and right sides, with a lower roller shaft extending between the lower bearing seats and a lower roller attached to the lower roller shaft. The feeding frame is provided with two bearing seat chutes on the left and right sides, within which the two upper bearing seats slide up and down, respectively. A crossbeam is connected between the two upper bearing seats, and a pressing cylinder pushes the crossbeam so that the upper roller assembly presses the bar on the lower roller assembly. The pressing cylinder pushes the upper roller assembly closer to the lower roller assembly, which can press the heated bar on the lower roller assembly and realize the conveying of the heated bar. However, the high temperature of the bar will cause wear of the upper and lower roller assemblies. Since the axis position of the lower roller assembly is fixed, when the roller assembly is worn, the upper roller assembly continues to press the bar, and the conveying axis of the bar will shift downward, thereby causing the conveying axis of the bar to shift away from the feed hole, affecting the conveying of the bar into the feed port. On the other hand, the fixed position of the lower roller assembly is not easy to be used for feeding round steel bars of different diameters. In order to ensure the coaxiality of round steel bars of different diameters with the feed port and improve the bar conveying effect, it is often necessary to adjust the height of the lower roller assembly or the height of the feed rack or replace the conveying roller of other diameters to make the round steel bar coaxial with the feed port. Utility Model Content

[0003] The purpose of the utility model is to provide a round steel fixed axis feeding device, which can not only always keep the coaxiality of the conveying axis of the round steel bar and the feed port, but also enable the fixed axis conveying of round steel bars of different diameters (maintaining the same conveying axis for conveying).

[0004] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0005] The round steel fixed-axis feeding device includes a frame, the frame is provided with an upper support plate and a lower support plate, the upper support plate is rotatably connected to the frame through the upper support plate shaft, the upper support plate rotates on the frame with the upper support plate shaft as the axis, the lower support plate rotates on the frame with the lower support plate shaft as the axis; the upper support plate shaft is provided with an upper support plate gear, the lower support plate shaft is provided with a lower support plate gear, and the upper support plate gear and the lower support plate gear are meshed; the upper support plate is provided with an upper conveying wheel group, the lower support plate is provided with a lower conveying wheel group, and the upper conveying wheel group and the lower conveying wheel group are arranged relatively;

[0006] The cam frame is provided with a cylinder seat above the upper support plate, and the upper support plate is located between the cylinder seat and the lower support plate. The cylinder seat is connected to the cylinder through the first cylinder rotating shaft, and the cylinder rotates on the cylinder seat with the first cylinder rotating shaft as the axis. The cylinder is connected to the upper support plate through the second cylinder rotating shaft, and the cylinder and the upper support plate rotate with the second cylinder rotating shaft as the axis. The cylinder drives the upper support plate to rotate on the frame with the upper support plate shaft as the axis, and the upper support plate drives the lower support plate to rotate on the frame with the lower support plate shaft as the axis through the upper support plate gear and the lower support plate gear, so that the upper conveying wheel group and the lower conveying wheel group clamp and convey the round steel.

[0007] The cylinder base and the frame are fixed in position. The cylinder rotates on the cylinder base around the first cylinder shaft. The cylinder and the upper support plate rotate relative to each other around the second cylinder shaft, enabling the cylinder to drive the upper support plate to rotate on the frame around the upper support plate shaft. When the cylinder drives the upper support plate to rotate, the upper support plate drives the lower support plate to rotate synchronously via gears, allowing the upper and lower support plates to simultaneously approach the conveying axis of the round steel, thereby achieving fixed-axis conveying of the round steel by the upper and lower conveying wheel assemblies.

[0008] The height of the clamping axis of the upper and lower support plates is fixed, meaning that the height of the conveying axis of the upper and lower conveying wheel assemblies for conveying round steel is also fixed. Therefore, round steel of different diameters can be conveyed while maintaining the same conveying axis when clamped and conveyed by the upper and lower support plates. The height of the conveying axis of the round steel can be adjusted by adjusting the meshing angle of the gears on the upper and lower support plates.

[0009] The upper bracket plate gear is arranged on the upper bracket plate, and the upper bracket plate gear rotates synchronously with the upper bracket plate. The lower bracket plate gear is arranged on the lower bracket plate, and the lower bracket plate gear rotates synchronously with the lower bracket plate.

[0010] In order to limit the upper bracket plate shaft and / or the lower bracket plate shaft, the upper bracket plate shaft and / or the lower bracket plate shaft are provided with a plate shaft groove, and a baffle is provided in the plate shaft groove, and the baffle is fixed to the frame by a screw.

[0011] The upper conveying wheel group includes a first upper conveying wheel and a second upper conveying wheel, the first upper conveying wheel is provided with a first upper conveying wheel shaft, the first upper conveying wheel shaft is arranged on the upper conveying wheel frame, and the first upper conveying wheel rotates on the upper conveying wheel frame with the first upper conveying wheel shaft as the axis; the second upper conveying wheel is provided with a second upper conveying wheel shaft, the second upper conveying wheel shaft is arranged on the upper conveying wheel frame, and the second upper conveying wheel rotates on the upper conveying wheel frame with the second upper conveying wheel shaft as the axis; the upper conveying wheel frame is provided with an upper conveying wheel frame rotating shaft between the first upper conveying wheel shaft and the second upper conveying wheel shaft, and the upper conveying wheel frame is rotatably connected to the upper bracket plate through the upper conveying wheel frame rotating shaft.

[0012] The first upper conveying wheel is provided with a first upper conveying wheel gear, and the second upper conveying wheel is provided with a second upper conveying wheel gear. An upper power gear is provided between the first upper conveying wheel gear and the second upper conveying wheel gear. The upper power gear is engaged with the first upper conveying wheel gear and the second upper conveying wheel gear. The upper power gear is connected to an upper power device. The upper power device drives the first upper conveying wheel gear and the second upper conveying wheel gear to rotate through the upper power gear, so as to realize the rotation of the first upper conveying wheel and the second upper conveying wheel.

[0013] The upper conveying wheel frame rotating shaft includes an upper shaft sleeve, and the upper bracket plate and the upper conveying wheel frame are both provided with an upper shaft sleeve through hole for installing the upper shaft sleeve, the upper shaft sleeve is connected in the upper shaft sleeve through hole, and the upper conveying wheel frame rotates on the upper bracket plate with the upper shaft sleeve as the axis; the upper power gear is connected to the upper power device through the upper power gear shaft, the upper power device and the upper power gear are respectively located on both sides of the upper bracket plate, the upper power gear shaft is located in the upper shaft sleeve, the upper power device drives the upper power gear to rotate through the upper power gear shaft, and the upper power gear drives the first upper conveying wheel gear and the second upper conveying wheel gear to rotate, so as to realize the rotation of the first upper conveying wheel and the second upper conveying wheel.

[0014] The lower conveying wheel group includes a first lower conveying wheel and a second lower conveying wheel, the first lower conveying wheel is provided with a first lower conveying wheel shaft, the first lower conveying wheel shaft is arranged on the lower conveying wheel frame, and the first lower conveying wheel rotates on the lower conveying wheel frame with the first lower conveying wheel shaft as the axis; the second lower conveying wheel is provided with a second lower conveying wheel shaft, the second lower conveying wheel shaft is arranged on the lower conveying wheel frame, and the second lower conveying wheel rotates on the lower conveying wheel frame with the second lower conveying wheel shaft as the axis; the lower conveying wheel frame is provided with a lower conveying wheel frame rotating shaft between the first lower conveying wheel shaft and the second lower conveying wheel shaft, and the lower conveying wheel frame is rotatably connected to the lower bracket plate through the lower conveying wheel frame rotating shaft.

[0015] The first lower conveying wheel is provided with a first lower conveying wheel gear, and the second lower conveying wheel is provided with a second lower conveying wheel gear. A lower power gear is provided between the first lower conveying wheel gear and the second lower conveying wheel gear. The lower power gear is engaged with the first lower conveying wheel gear and the second lower conveying wheel gear. The lower power gear is connected to a lower power device. The lower power device drives the first lower conveying wheel gear and the second lower conveying wheel gear to rotate through the lower power gear, so as to realize the rotation of the first lower conveying wheel and the second lower conveying wheel.

[0016] The lower conveying wheel frame rotating shaft includes a lower shaft sleeve, and the lower bracket plate and the lower conveying wheel frame are both provided with a lower shaft sleeve through hole for installing the lower shaft sleeve, the lower shaft sleeve is connected in the lower shaft sleeve through hole, and the lower conveying wheel frame rotates on the lower bracket plate with the lower shaft sleeve as the axis; the lower power gear is connected to the lower power device through the lower power gear shaft, the lower power device and the lower power gear are respectively located on both sides of the lower bracket plate, and the lower power gear shaft is located in the lower shaft sleeve, and the lower power device drives the lower power gear to rotate through the lower power gear shaft, and the lower power gear drives the first lower conveying wheel gear and the second lower conveying wheel gear to rotate, so as to realize the rotation of the first lower conveying wheel and the second lower conveying wheel.

[0017] The cylinder pushes the upper and lower support plates toward the conveying axis of the round steel bar at the same time. The upper conveyor wheel frame rotates around the upper conveyor wheel frame's rotating shaft, pressing the first and second upper conveyor wheels onto the round steel bar. The lower conveyor wheel frame rotates around the lower conveyor wheel frame's rotating shaft, pressing the first and second lower conveyor wheels onto the round steel bar, enabling the upper and lower conveyor wheel groups to effectively clamp and convey the round steel bar. Because the cylinder needs to constantly push the upper support plate to enable the upper and lower conveyor wheel groups to clamp and convey the round steel bar, the conveyor frame can automatically rotate when the round steel bar surface is uneven, ensuring that the first and second conveyor wheels always press against the round steel bar, ensuring efficient conveying of the round steel bar.

[0018] The rack includes a first rack plate and a second rack plate, and an upper bracket plate and a lower bracket plate are connected between the first rack plate and the second rack plate.

[0019] The utility model maintains the coaxiality of the round steel and the feed port by rotating the upper and lower support plates, thereby achieving fixed-axis conveying of the round steel and effectively avoiding the deviation of the conveying axis of the round steel. At the same time, the utility model can convey round steel bars of different diameters with fixed axis.

[0020] The utility model can make the conveying wheels closely contact the round steel by rotating the upper conveying wheel frame and the lower conveying wheel frame, thereby ensuring the effective feeding of the round steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] Figure 1This is a schematic structural diagram of the utility model.

[0023] Figure 2 This is a schematic structural diagram of the upper conveying wheel assembly and the lower conveying wheel assembly of the present utility model.

[0024] Figure 3 This is a schematic diagram of the upper bracket plate structure of the present utility model.

[0025] Figure 4 This is a schematic diagram of the upper shaft sleeve connection structure of the utility model.

[0026] Figure 5 This is a schematic diagram of the connection relationship structure of the upper bracket plate of the utility model.

[0027] Figure 6 This is a schematic structural diagram of the upper conveying wheel assembly of the present utility model.

[0028] Figure 7 This is a schematic diagram of the lower bracket plate structure of the utility model.

[0029] Figure 8 This is a schematic diagram of the lower shaft sleeve connection structure of the utility model.

[0030] Figure 9 This is a schematic diagram of the connection relationship structure of the upper bracket plate of the utility model. DETAILED DESCRIPTION

[0031] like Figure 1-9 As shown, the round steel fixed axis feeding device includes a frame, which includes a first frame plate 111 and a second frame plate 112 connected as one body, and an installation gap is provided between the first frame plate 111 and the second frame plate 112 for installing the upper bracket plate 2 and the lower bracket plate 3.

[0032] The front end of the upper support plate 2 is provided with an upper conveying wheel assembly 4, and the rear end of the upper support plate 2 is provided with an upper support plate shaft through hole 121 for the upper support plate shaft 12 to pass through. The first frame plate 111 and the second frame plate 112 both have an upper support plate shaft through hole that communicates with the upper support plate shaft through hole 121. The rear end of the upper support plate 2 is located between the first frame plate 111 and the second frame plate 112. The upper support plate shaft 12 penetrates the upper support plate shaft through hole and the upper support plate shaft through hole 121. The upper support plate 2 rotates on the frame with the upper support plate shaft 12 as the axis, thereby realizing the rotation connection of the upper support plate 2 to the frame. The upper support plate shaft 12 is provided with an upper support plate gear 122, which is fixed to the upper support plate 2 by bolts. The upper support plate gear 122 and the upper support plate 2 rotate synchronously with the upper support plate shaft 12 as the axis.

[0033] A lower support plate 3 is provided below the upper support plate 2. A lower conveying wheel assembly 5 is provided at the front end of the lower support plate 3. The lower conveying wheel assembly 5 and the upper conveying wheel assembly 4 are arranged opposite each other. A lower support plate shaft through hole 131 is provided at the rear end of the lower support plate 3 for the lower support plate shaft 13 to pass through. The first frame plate 111 and the second frame plate 112 both have lower support plate shaft through holes that communicate with the lower support plate shaft through holes 131. The rear end of the lower support plate 3 is located between the first frame plate 111 and the second frame plate 112. The lower support plate shaft 13 penetrates the lower support plate shaft through holes and the lower support plate shaft through holes 131. The lower support plate 3 rotates on the frame with the lower support plate shaft 13 as the axis, thereby realizing the rotation connection of the lower support plate 3 on the frame. A lower support plate gear 132 is mounted on the lower support plate rotating shaft 12. The lower support plate gear 132 is fixed to the lower support plate 3 by bolts. The lower support plate gear 132 and the lower support plate 3 rotate synchronously with the lower support plate shaft 13 as the axis.

[0034] The upper bracket plate gear 122 is meshed with the lower bracket plate gear 132. When the upper bracket plate 2 rotates on the frame with the upper bracket plate shaft 12 as the axis, the lower bracket plate 3 rotates synchronously on the frame with the lower bracket plate shaft 13 as the axis.

[0035] A cylinder 6 is arranged above the upper bracket plate 2. The body of the cylinder 6 is rotatably mounted on a cylinder seat 61. The cylinder seat 61 is fixed to the top of the frame by bolts. A first cylinder rotating shaft 62 is arranged on both sides of the body of the cylinder 6. The cylinder seat 61 is provided with a first cylinder rotating shaft hole for the first cylinder rotating shaft 62 to pass through. The first cylinder rotating shaft 62 is arranged in the first cylinder rotating shaft hole. The cylinder 6 rotates on the cylinder seat 61 with the first cylinder rotating shaft 62 as the axis, so that the cylinder 6 is rotatably connected to the cylinder seat 61 with the first cylinder rotating shaft 62 as the axis.

[0036] The piston rod of the cylinder 6 is provided with a second cylinder rotating shaft 63, and a cylinder connecting part 64 is provided above the upper bracket plate 2. The cylinder connecting part 64 and the upper bracket plate 2 are an integrated structure. The cylinder connecting part 64 is provided for the second cylinder rotating shaft 63 to pass through the second cylinder rotating shaft hole 631. The second cylinder rotating shaft 63 is provided in the second cylinder rotating shaft hole 631. The cylinder 6 and the cylinder connecting part 64 rotate around the second cylinder rotating shaft 63 as the axis, so that the piston rod of the cylinder 5 rotates around the second cylinder rotating shaft 63 as the axis to connect to the upper bracket plate 2.

[0037] When the cylinder 6 drives the upper bracket plate 2 to rotate on the frame with the second cylinder rotating shaft 63 as the axis, the cylinder 5 will rotate on the cylinder seat 61 with the first cylinder rotating shaft 62 as the axis, and the piston rod of the cylinder 5 and the upper bracket plate 2 will rotate with the second cylinder rotating shaft 63 as the axis, so that the cylinder 6 can drive the upper bracket plate 2 to rotate with the second cylinder rotating shaft 63 as the axis, and further realize the upper conveying wheel group 4 and the lower conveying wheel group 5 to clamp and convey the round steel.

[0038] Plate shaft grooves are provided on the upper bracket plate shaft 12 and the lower bracket plate shaft 13, and an upper side baffle 14 and a lower side baffle 15 are provided on the frame 1. The upper side baffle 14 is clamped in the plate shaft groove of the upper bracket plate shaft 12 and is fastened to the first frame plate 111 by bolts to limit the upper bracket plate shaft 12; the lower side baffle 15 is clamped in the plate shaft groove of the lower bracket plate shaft 13 and is fastened to the first frame plate 111 by bolts to limit the lower bracket plate shaft 13.

[0039] like Figure 1-6 As shown, the upper conveying wheel group 4 includes an upper sleeve through hole 411 provided at the front end of the upper bracket plate 2, the upper sleeve 41 is connected to the upper sleeve through hole 411, on one side of the upper bracket plate 2, the upper sleeve 41 has an upper sleeve convex portion protruding from the upper sleeve through hole 411, the upper sleeve convex portion is connected to the upper conveying wheel frame 44, the upper conveying wheel frame 44 has an upper sleeve through hole for installing the upper sleeve 41, the upper sleeve convex portion is connected to the upper sleeve through hole of the upper conveying wheel frame 44, and the upper conveying wheel frame 44 rotates on the upper bracket plate 2 with the upper sleeve 41 as the axis. On the other side of the upper bracket plate 2, the upper bracket plate 2 is connected to an upper power device 42, which includes a reducer and a motor. The upper power device 42 is connected to an upper power gear shaft 43, which is connected to an upper power gear shaft 431. The upper power gear shaft 43 is provided in the upper sleeve 41, and the upper power device 42 drives the upper power gear 431 to rotate through the upper power gear shaft 43.

[0040] On both sides of the upper power gear 431, the upper conveying wheel frame 44 is provided with a first upper conveying wheel shaft 45 and a second upper conveying wheel shaft 47. The first upper conveying wheel shaft 45 is provided with a first upper conveying wheel 46, and the first upper conveying wheel 46 has a first upper conveying wheel gear 461, which is engaged with the upper power gear 431; the second upper conveying wheel shaft 47 is provided with a second upper conveying wheel 48, and the second upper conveying wheel 48 has a second upper conveying wheel gear 481, which is engaged with the upper power gear 431; the upper power device 42 simultaneously drives the first upper conveying wheel gear 461 and the second upper conveying wheel gear 481 to rotate through the upper power gear shaft 43, so as to drive the first upper conveying wheel 46 and the second upper conveying wheel 48 to rotate.

[0041] like Figure 1 、 2As shown in Figures 7, 8, and 9, the lower conveying wheel group 4 includes a lower shaft sleeve through hole 511 arranged at the front end of the lower bracket plate 3, the lower shaft sleeve 51 is connected to the lower shaft sleeve through hole 511, and on one side of the lower bracket plate 2 (the same side of the upper conveying wheel frame 44), the lower shaft sleeve 51 has a lower shaft sleeve convex portion protruding from the lower shaft sleeve through hole 511, the lower shaft sleeve convex portion is connected to the lower conveying wheel frame 54, the lower conveying wheel frame 54 has a lower shaft sleeve through hole for installing the lower shaft sleeve 51, the lower shaft sleeve convex portion is connected to the lower shaft sleeve through hole of the lower conveying wheel frame 54, and the lower conveying wheel frame 54 rotates on the lower bracket plate 3 with the lower shaft sleeve 51 as the axis. On the other side of the lower bracket plate 3, the lower bracket plate 3 is connected to the lower power device 52, which includes a reducer and a motor. The lower power device 52 is connected to the lower power gear shaft 53, and the lower power gear shaft 53 is connected to the lower power gear 531. The lower power gear shaft 53 is arranged in the lower shaft sleeve 51, and the lower power device 52 drives the lower power gear 531 to rotate through the lower power gear shaft 53.

[0042] On both sides of the lower power gear 531, the lower conveying wheel frame 54 is provided with a first lower conveying wheel shaft 55 and a second lower conveying wheel shaft 57. The first lower conveying wheel shaft 55 is provided with a first lower conveying wheel 56, and the first lower conveying wheel 56 has a first lower conveying wheel gear 561, which is engaged with the lower power gear 531; the second lower conveying wheel shaft 57 is provided with a second lower conveying wheel 58, and the second lower conveying wheel 58 has a second lower conveying wheel gear 581, which is engaged with the lower power gear 531; the lower power device 52 simultaneously drives the first lower conveying wheel gear 561 and the second lower conveying wheel gear 581 to rotate through the lower power gear shaft 53, so as to drive the first lower conveying wheel 56 and the second lower conveying wheel 58 to rotate.

[0043] The cylinder 6 drives the upper support plate 2 to rotate on the frame with the second cylinder rotating shaft 63 as the axis, and the lower support plate 3 rotates synchronously on the frame with the lower support plate shaft 13 as the axis. The upper conveying wheel group 4 and the lower conveying wheel group 5 simultaneously approach the round steel 9 and tighten the round steel 9. The upper power device 42 drives the first upper conveying wheel 46 and the second upper conveying wheel 48 to rotate, and the lower power device 52 drives the first lower conveying wheel 56 and the second lower conveying wheel 58 to rotate, so that the upper conveying wheel group 4 and the lower conveying wheel group 5 can clamp and convey the round steel 9.

[0044] When the upper conveying wheel group 4 and the lower conveying wheel group 5 are close to the round steel 9, the upper conveying wheel frame 44 will rotate with the upper shaft sleeve 41 as the axis, so that the first upper conveying wheel 46 and the second upper conveying wheel 48 are pressed on the round steel 9, and the lower conveying wheel frame 54 will rotate with the lower shaft sleeve 51 as the axis, so that the first lower conveying wheel 56 and the second lower conveying wheel 58 are pressed on the round steel 9, so that the upper conveying wheel group 4 and the lower conveying wheel group 5 clamp and convey the round steel 9. Since the cylinder 6 needs to always push the upper support plate 2 so that the upper conveying wheel group 4 and the lower conveying wheel group 5 clamp and convey the round steel 9, when the surface of the round steel 9 is uneven, the conveying frame can rotate automatically so that the first upper conveying wheel and the second upper conveying wheel or the first lower conveying wheel and the second lower conveying wheel are always pressed on the round steel, ensuring the effective conveying of the round steel.

[0045] The utility model maintains the coaxiality of the round steel and the feed port by rotating the upper and lower support plates, realizes the fixed axis conveying of the round steel, effectively avoids the deviation of the conveying axis of the round steel, and can also convey round steel bars of different diameters in a fixed axis.

[0046] The above embodiments do not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. Round steel fixed axis feeding device, characterized by: The lower support plate is provided with a gear, and the lower support plate is meshed with the gear of the lower support plate; the upper support plate is provided with an upper conveying wheel group, and the lower support plate is provided with a lower conveying wheel group, and the upper conveying wheel group and the lower conveying wheel group are arranged relative to each other; A cylinder seat is provided above the upper bracket plate, and the cylinder seat is connected to the cylinder through the first cylinder rotating shaft. The cylinder rotates on the cylinder seat with the first cylinder rotating shaft as the axis. The cylinder is connected to the upper bracket plate through the second cylinder rotating shaft. The cylinder and the upper bracket plate rotate with the second cylinder rotating shaft as the axis. The cylinder drives the upper bracket plate to rotate on the frame with the upper bracket plate shaft as the axis. The upper bracket plate drives the lower bracket plate to rotate on the frame with the lower bracket plate shaft as the axis through the upper bracket plate gear and the lower bracket plate gear, so that the upper conveying wheel group and the lower conveying wheel group clamp and convey the round steel.

2. The round steel fixed-axis feeding device according to claim 1, characterized in that: The upper bracket plate gear is arranged on the upper bracket plate, and the upper bracket plate gear rotates synchronously with the upper bracket plate. The lower bracket plate gear is arranged on the lower bracket plate, and the lower bracket plate gear rotates synchronously with the lower bracket plate.

3. The round steel fixed-axis feeding device according to claim 1, characterized in that: The upper bracket plate shaft and / or the lower bracket plate shaft are provided with a plate shaft groove, a baffle is provided in the plate shaft groove, and the baffle is fixedly provided on the frame.

4. The round steel fixed-axis feeding device according to claim 1, characterized in that: The upper conveying wheel group includes a first upper conveying wheel and a second upper conveying wheel, the first upper conveying wheel is provided with a first upper conveying wheel shaft, the first upper conveying wheel shaft is arranged on the upper conveying wheel frame, and the first upper conveying wheel rotates on the upper conveying wheel frame with the first upper conveying wheel shaft as the axis; the second upper conveying wheel is provided with a second upper conveying wheel shaft, the second upper conveying wheel shaft is arranged on the upper conveying wheel frame, and the second upper conveying wheel rotates on the upper conveying wheel frame with the second upper conveying wheel shaft as the axis; the upper conveying wheel frame is provided with an upper conveying wheel frame rotating shaft between the first upper conveying wheel shaft and the second upper conveying wheel shaft, and the upper conveying wheel frame is rotatably connected to the upper bracket plate through the upper conveying wheel frame rotating shaft.

5. The round steel fixed-axis feeding device according to claim 4, characterized in that: The first upper conveying wheel is provided with a first upper conveying wheel gear, and the second upper conveying wheel is provided with a second upper conveying wheel gear. An upper power gear is provided between the first upper conveying wheel gear and the second upper conveying wheel gear. The upper power gear is engaged with the first upper conveying wheel gear and the second upper conveying wheel gear. The upper power gear is connected to an upper power device, and the upper power device drives the first upper conveying wheel and the second upper conveying wheel to rotate through the upper power gear.

6. The round steel fixed-axis feeding device according to claim 5, characterized in that: The upper conveying wheel frame rotating shaft includes an upper shaft sleeve, and the upper bracket plate and the upper conveying wheel frame are both provided with an upper shaft sleeve through hole for installing the upper shaft sleeve. The upper shaft sleeve is connected in the upper shaft sleeve through hole, and the upper conveying wheel frame rotates on the upper bracket plate with the upper shaft sleeve as the axis; the upper power gear is connected to the upper power device through the upper power gear shaft, the upper power device and the upper power gear are respectively located on both sides of the upper bracket plate, and the upper power gear shaft is located in the upper shaft sleeve, and the upper power device drives the upper power gear to rotate through the upper power gear shaft, and the upper power gear drives the first upper conveying wheel and the second upper conveying wheel to rotate.

7. The round steel fixed-axis feeding device according to claim 1, characterized in that: The lower conveying wheel group includes a first lower conveying wheel and a second lower conveying wheel, the first lower conveying wheel is provided with a first lower conveying wheel shaft, the first lower conveying wheel shaft is arranged on the lower conveying wheel frame, and the first lower conveying wheel rotates on the lower conveying wheel frame with the first lower conveying wheel shaft as the axis; the second lower conveying wheel is provided with a second lower conveying wheel shaft, the second lower conveying wheel shaft is arranged on the lower conveying wheel frame, and the second lower conveying wheel rotates on the lower conveying wheel frame with the second lower conveying wheel shaft as the axis; the lower conveying wheel frame is provided with a lower conveying wheel frame rotating shaft between the first lower conveying wheel shaft and the second lower conveying wheel shaft, and the lower conveying wheel frame is rotatably connected to the lower bracket plate through the lower conveying wheel frame rotating shaft.

8. The round steel fixed-axis feeding device according to claim 7, characterized in that: The first lower conveying wheel is provided with a first lower conveying wheel gear, and the second lower conveying wheel is provided with a second lower conveying wheel gear. A lower power gear is provided between the first lower conveying wheel gear and the second lower conveying wheel gear. The lower power gear is engaged with the first lower conveying wheel gear and the second lower conveying wheel gear. The lower power gear is connected to a lower power device, and the lower power device drives the first lower conveying wheel and the second lower conveying wheel to rotate through the lower power gear.

9. The round steel fixed-axis feeding device according to claim 8, characterized in that: The lower conveying wheel frame rotating shaft includes a lower shaft sleeve, and the lower bracket plate and the lower conveying wheel frame are both provided with a lower shaft sleeve through hole for installing the lower shaft sleeve, the lower shaft sleeve is connected in the lower shaft sleeve through hole, and the lower conveying wheel frame rotates on the lower bracket plate with the lower shaft sleeve as the axis; the lower power gear is connected to the lower power device through the lower power gear shaft, the lower power device and the lower power gear are respectively located on both sides of the lower bracket plate, the lower power gear shaft is located in the lower shaft sleeve, the lower power device drives the lower power gear to rotate through the lower power gear shaft, and the lower power gear drives the first lower conveying wheel and the second lower conveying wheel to rotate.

10. The round steel fixed-axis feeding device according to claim 1, characterized in that: The rack includes a first rack plate and a second rack plate, and an upper bracket plate and a lower bracket plate are connected between the first rack plate and the second rack plate.

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