Pneumatic material blocking mechanism of reinforcing steel bar straight thread rolling machine

Abstract

The utility model relates to a pneumatic material blocking mechanism of a reinforcing steel bar straight thread rolling machine, which comprises a base, a driving air cylinder arranged on the base, a pressing rod arranged on a piston rod of the driving air cylinder, and a blocking strip arranged on the base through a revolute pair, the length direction of the driving air cylinder is perpendicular to the axis of the rotating pair, and the end of the pressing rod abuts against the top face of the blocking strip in a rolling mode so that an adjustable included angle can be formed between a piston rod of the driving air cylinder and the blocking strip. The position-adjustable pressing rod selectively shields between the clamping assembly and the thread rolling assembly of the reinforcing steel bar thread rolling machine, so that the end of the reinforcing steel bar can abut against the clamping assembly and the thread rolling assembly, and the device has the advantages that the length of a machining section after the reinforcing steel bar is clamped can be conveniently positioned, and the machining precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar rolling thread processing, in particular to a pneumatic material blocking mechanism for a straight thread rolling machine of steel bars. Background Art

[0002] A steel bar rolling machine is a machine that uses the advanced process of rib stripping and rolling to process the straight threads at the connecting ends of steel bars. The straight threads of steel bars processed by it have continuous and dense metal fibers, good comprehensive mechanical properties, the tensile strength is increased by 20 - 30%, the fatigue resistance strength is increased by 40 - 60%, and the corrosion resistance performance is increased by 50 - 200%. Moreover, the connection strength of steel bars is higher than that of the steel bar base material. The steel bar rolling machine plays an important role in the construction industry. Through its efficient, energy-saving and low-consumption processing method, it significantly improves the quality of steel bars and the safety of building structures.

[0003] Chinese Patent with the authorization announcement number CN217666141U discloses a steel bar rolling machine, which includes a clamping assembly for limiting and fixing the position of the steel bar, a cutting assembly for removing burrs at the end of the steel bar, and a rolling thread assembly for rolling threads at the end of the processed steel bar. The clamping assembly, the cutting assembly and the rolling thread assembly are sequentially and continuously arranged. The cutting assembly includes a limiting baffle for limiting the horizontal position of the steel bar, and a driving assembly for driving a saw blade to cut the end of the steel bar.

[0004] The above existing technical solutions have the following defects: When the above steel bar rolling machine clamps and fixes the steel bar through the clamping assembly, it is impossible to position the length of the steel bar passing through the clamping assembly, resulting in uneven lengths of the straight threads processed on the steel bars during batch production, and thus the processing accuracy cannot be guaranteed, which needs to be improved. Content of the Utility Model

[0005] The problem to be solved by the utility model is to provide a pneumatic material blocking mechanism for a straight thread rolling machine of steel bars aiming at the above-mentioned deficiencies in the prior art. By selectively blocking between the clamping assembly and the rolling thread assembly of the steel bar rolling machine, so that the end of the steel bar can be abutted, it has the advantages of being convenient for positioning the length of the processing section after the steel bar is clamped and ensuring the processing accuracy.

[0006] The above utility model purpose of the utility model is achieved through the following technical solutions:

[0007] A pneumatic material blocking mechanism for a straight thread rolling machine of steel bars includes a base, a driving cylinder arranged on the base, a pressure rod arranged on the piston rod of the driving cylinder, and a blocking bar arranged on the base through a rotating pair. The length direction of the driving cylinder is perpendicular to the axis line of the rotating pair, and the end of the pressure rod rolls and abuts against the top surface of the blocking bar, so as to form an angle-adjustable included angle between the piston rod of the driving cylinder and the blocking bar.

[0008] By adopting the above technical scheme, during the processing of the steel bar thread rolling machine, the pneumatic material blocking mechanism is installed on one side of the thread rolling assembly of the steel bar thread rolling machine through the base. It flexibly adjusts the angle between the pressure rod and the baffle bar by driving the piston rod of the cylinder to extend and retract, so as to drive the end of the baffle bar to move close to the area between the clamping assembly and the thread rolling assembly of the steel bar thread rolling machine, so as to block the thread rolling mouth of the thread rolling assembly, and facilitate the end of the steel bar to abut against the surface of the baffle bar, and then clamp and position the length of the processing section after the steel bar is clamped by the clamping assembly, thereby ensuring the processing accuracy of the straight thread on the steel bar; in addition, the rolling contact design between the pressure rod and the baffle bar reduces the friction force and ensures the smoothness and stability of the movement between the pressure rod and the baffle bar; in this process, the position-adjustable pressure rod is selectively blocked between the clamping assembly and the thread rolling assembly of the steel bar thread rolling machine so that the end of the steel bar abuts, which has the advantages of facilitating the positioning of the length of the processing section after the steel bar is clamped and ensuring the processing accuracy.

[0009] The utility model is further configured as follows: the base includes a welding fixed seat, an adjustment seat overlapped on the top surface of the welding fixed seat, at least two strip grooves opened on the surface of the adjustment seat, and a first fastener slidingly penetrated through the strip grooves and locked on the welding fixed seat and the adjustment seat, the length direction of the strip grooves and the axis center line of the rotating pair are parallel to each other, and the driving cylinder is arranged on the adjustment seat.

[0010] By adopting the above technical solution, the welding fixing seat is installed on one side of the thread rolling assembly of the steel bar thread rolling machine by welding, and the adjustment seat can adjust its position on the welding fixing seat along the length direction of the steel bar through the strip groove according to the required length of the steel bar to be positioned, that is, the position of the baffle is adjusted, and then locked by the first fastener, which has good versatility.

[0011] The utility model is further configured as follows: the first fastener is configured as an adjusting bolt that is slidably inserted into the strip groove, one end of the adjusting bolt is threadedly connected to the welding fixing seat, and the other end tightly contacts the surface of the adjusting seat.

[0012] By adopting the above technical solution, better installation stability is achieved.

[0013] The utility model is further configured as follows: the rotating pair includes a pair of rotating seats arranged on the adjusting seat, and a second fastener penetrating and fixed on the pair of rotating seats, and the baffle is arranged between the pair of rotating seats and rotatably connected to the second fastener.

[0014] By adopting the above technical solution, the second fastener is arranged both as a rotating shaft for rotatably connecting between the pair of rotating seats and as a connecting structure for detachably connecting between the pair of rotating seats, which is convenient for maintenance and replacement of the retaining strip.

[0015] The present utility model is further configured as: the second fastener includes a positioning bolt and a positioning nut threadedly connected to the positioning bolt. The positioning bolt sequentially passes through one of the rotating seats, the retaining strip, and the other rotating seat, and the positioning bolt and the positioning nut are respectively in close contact with the outer surfaces of the pair of rotating seats.

[0016] By adopting the above technical solution, it has good installation stability.

[0017] The present utility model is further configured as: the retaining strip includes a pair of flappers rotatably connected to the positioning bolt and arranged at intervals from each other, an L-shaped plate protruding from the inner surface of one of the flappers, a baffle plate inserted between the L-shaped plate and one of the flappers, and a third fastener. The piston rod of the driving cylinder passes through the gap between the pair of flappers, and the end of the pressing rod rolls against the top surfaces of the pair of flappers. The third fastener sequentially passes through and is fixed to one of the flappers, the baffle plate, the L-shaped plate, and the other flapper.

[0018] By adopting the above technical solution, the baffle plate is used to block the end of the positioning steel bar. After long-term use, the end of the baffle plate may crack due to frequent pressure. It is convenient to repair and replace the baffle plate through the third fastener.

[0019] The present utility model is further configured as: the bottom surface of the end of the flapper close to the pressing rod is provided as an inclined surface.

[0020] By adopting the above technical solution, the center of gravity of the end of the flapper is adjusted, which is convenient for the driving cylinder to drive the flapper to flip through the pressing rod.

[0021] The present utility model is further configured as: the third fastener includes a fastening bolt and a fastening nut threadedly connected to the positioning bolt. The fastening bolt sequentially passes through one of the flappers, the baffle plate, the L-shaped plate, and the other flapper, and the fastening bolt and the fastening nut are respectively in close contact with the outer surfaces of the pair of flappers.

[0022] By adopting the above technical solution, it has good installation stability.

[0023] In summary, the beneficial technical effects of the present utility model are as follows: by selectively blocking between the clamping assembly and the rolling thread assembly of the steel bar rolling machine through the position-adjustable pressing rod, so that the end of the steel bar can be abutted, it has the advantages of facilitating the positioning of the length of the processing section after the steel bar is clamped and ensuring the processing accuracy. Description of the Drawings

[0024] Figure 1 is the front view structural schematic diagram of the pneumatic material blocking mechanism of the straight thread rolling machine for steel bars of the present utility model.

[0025] Figure 2 is the three-dimensional structural schematic diagram of the pneumatic material blocking mechanism of the straight thread rolling machine for steel bars of the present utility model.

[0026] In the figure, 1 is the base; 11 is the welding fixing seat; 12 is the adjusting seat; 13 is the strip-shaped groove; 14 is the first fastener; 141 is the adjusting bolt; 2 is the driving cylinder; 3 is the pressure rod; 4 is the rotating pair; 41 is the rotating seat; 42 is the second fastener; 421 is the positioning bolt; 422 is the positioning nut; 5 is the material blocking bar; 51 is the dial; 52 is the L-shaped plate; 53 is the baffle; 54 is the third fastener; 541 is the fastening bolt; 542 is the fastening nut. Specific implementation manners

[0027] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the drawings and specific implementation manners.

[0028] Refer to Figure 1 , a pneumatic material blocking mechanism of a straight thread rolling machine for steel bars disclosed by the present utility model, includes a base 1, a driving cylinder 2 arranged on the base 1, a pressure rod 3 arranged on the piston rod of the driving cylinder 2, and a material blocking bar 5 arranged on the base 1 through a rotating pair 4. Among them, the length direction of the driving cylinder 2 and the axis line of the rotating pair 4 are perpendicular to each other, and the end of the pressure rod 3 rolls and abuts against the top surface of the material blocking bar 5, so as to form an angle-adjustable included angle between the piston rod of the driving cylinder 2 and the material blocking bar 5.

[0029] To meet the positioning requirements for steel bars of different lengths, the base 1 includes a welding fixing seat 11, an adjusting seat 12 lapped on the top surface of the welding fixing seat 11, two pairs of strip-shaped grooves 13 opened on the surface of the adjusting seat 12, and a first fastener 14. Among them, the length direction of the strip-shaped groove 13 and the axis line of the rotating pair 4 are parallel to each other, and the driving cylinder 2 is arranged on the adjusting seat 12. In addition, the first fastener 14 is set as an adjusting bolt 141 slidably penetrating through the strip-shaped groove 13. One end of the adjusting bolt 141 is threadedly connected to the welding fixing seat 11, and the other end tightly abuts against the surface of the adjusting seat 12. The welding fixing seat 11 is installed on one side of the rolling component of the steel bar rolling machine by welding, and the adjusting seat 12 can adjust its position on the welding fixing seat 11 along the length direction of the steel bar through the strip-shaped groove 13 according to the length of the steel bar to be positioned, that is, adjust the position of the material blocking bar 5, and then lock it through the first fastener 14, which has good versatility.

[0030] Refer to Figure 2, the rotating pair 4 includes a pair of rotating seats 41 arranged on the adjusting seat 12, and a second fastener 42 passing through and fixed on this pair of rotating seats 41. The retaining strip 5 is arranged between this pair of rotating seats 41. Among them, the second fastener 42 includes a positioning bolt 421 and a positioning nut 422 threadedly connected to the positioning bolt 421. The positioning bolt 421 sequentially passes through one of the rotating seats 41, the retaining strip 5, and the other rotating seat 41, and the positioning bolt 421 and the positioning nut 422 respectively abut tightly against the outer surfaces of this pair of rotating seats 41. The second fastener 42 is arranged both as a rotating shaft for the retaining strip 5 to be rotatably connected between this pair of first rotating seats 41 and as a connecting structure for the retaining strip 5 to be detachably connected between this pair of first rotating seats 41, facilitating the inspection and replacement of the retaining strip 5.

[0031] The retaining strip 5 includes a pair of tabs 51 rotatably connected to the positioning bolt 421 and arranged at intervals from each other, an L-shaped plate 52 protruding from the inner surface of one of the tabs 51, a baffle 53 inserted between the L-shaped plate 52 and one of the tabs 51, and a third fastener 54. Among them, the piston rod of the driving cylinder 2 passes through the gap between this pair of tabs 51, and the end of the pressing rod 3 rolls and abuts against the top surfaces of this pair of tabs 51. The bottom surface of the end of the tab 51 close to the pressing rod 3 is set as an inclined surface. In addition, the third fastener 54 includes a fastening bolt 541 and a positioning nut 422 threadedly connected to the positioning bolt 421. The fastening bolt 541 sequentially passes through one of the tabs 51, the baffle 53, the L-shaped plate 52, and the other tab 51, and the fastening bolt 541 and the fastening nut 542 respectively abut tightly against the outer surfaces of this pair of tabs 51. The baffle 53 is used to block the end of the positioning steel bar. After long-term use, the end of the baffle 53 may crack due to frequent compression. The third fastener 54 facilitates the inspection and replacement of the baffle 53.

[0032] The implementation principle of this embodiment is as follows: During the processing of the steel bar thread rolling machine, this pneumatic material blocking mechanism is installed on one side of the thread rolling assembly of the steel bar thread rolling machine through the base 1. Through the telescopic movement of the piston rod of the driving cylinder 2, it flexibly adjusts the included angle between the pressing rod 3 and the retaining strip 5 to drive the end of the retaining strip 5 to move closer to the area between the clamping assembly and the thread rolling assembly of the steel bar thread rolling machine, so as to block the thread rolling opening of the thread rolling assembly, and it is convenient for the end of the steel bar to abut against the surface of the retaining strip 5. Then, the clamping assembly clamps and positions the length of the processed section of the steel bar, thereby ensuring the processing accuracy of the straight thread on the steel bar; in addition, the rolling contact design between the pressing rod 3 and the retaining strip 5 reduces the friction force and ensures the smoothness and stability of the movement between the pressing rod 3 and the retaining strip 5; during this process, the pressing rod 3 with adjustable position selectively blocks between the clamping assembly and the thread rolling assembly of the steel bar thread rolling machine, so that the end of the steel bar can abut, which has the advantages of facilitating the positioning of the length of the processed section of the clamped steel bar and ensuring the processing accuracy.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A pneumatic material stop mechanism for a straight thread rolling machine for steel bars, characterized in that: It includes a base (1), a driving cylinder (2) disposed on the base (1), a pressing rod (3) disposed on the piston rod of the driving cylinder (2), and a stop bar (5) disposed on the base (1) through a rotating pair (4). The length direction of the driving cylinder (2) is perpendicular to the axis line of the rotating pair (4), and the end of the pressing rod (3) rolls against the top surface of the stop bar (5) so as to form an angle-adjustable included angle between the piston rod of the driving cylinder (2) and the stop bar (5). The base (1) includes a welded fixing seat (11), an adjusting seat (12) lapped on the top surface of the welded fixing seat (11), at least two strip-shaped grooves (13) opened on the surface of the adjusting seat (12), and a first fastener (14) slidably penetrating through the strip-shaped grooves (13) and locked on the welded fixing seat (11) and the adjusting seat (12). The length direction of the strip-shaped grooves (13) is parallel to the axis line of the rotating pair (4), and the driving cylinder (2) is disposed on the adjusting seat (12). The stop bar (5) includes a pair of flap pieces (51) disposed on the base (1) through the rotating pair (4) and arranged at intervals from each other, an L-shaped plate (52) protruding from the inner surface of one of the flap pieces (51), a baffle plate (53) inserted between the L-shaped plate (52) and one of the flap pieces (51), and a third fastener (54). The piston rod of the driving cylinder (2) passes through the gap between the pair of flap pieces (51), and the end of the pressing rod (3) rolls against the top surfaces of the pair of flap pieces (51). The third fastener (54) is sequentially passed through and fixed on one of the flap pieces (51), the baffle plate (53), the L-shaped plate (52) and the other flap piece (51).

2. The pneumatic material stop mechanism of a straight thread rolling machine for steel bars according to claim 1, wherein: The first fastener (14) is set as an adjusting bolt (141) slidably penetrating through the strip-shaped grooves (13). One end of the adjusting bolt (141) is threadedly connected to the welded fixing seat (11), and the other end tightly abuts against the surface of the adjusting seat (12).

3. The pneumatic material stop mechanism of a straight thread rolling machine for steel bars according to claim 1, characterized in that: The rotating pair (4) includes a pair of rotating seats (41) disposed on the adjusting seat (12), and a second fastener (42) penetrating through and fixed on the pair of rotating seats (41). The stop bar (5) is arranged between the pair of rotating seats (41) and is rotatably connected to the second fastener (42).

4. The pneumatic material blocking mechanism of a straight thread rolling machine for steel bars according to claim 3, characterized in that: The second fastener (42) includes a positioning bolt (421) and a positioning nut (422) threadedly connected to the positioning bolt (421). The positioning bolt (421) sequentially passes through one of the rotating seats (41), the stop bar (5) and the other rotating seat (41), and the positioning bolt (421) and the positioning nut (422) respectively tightly abut against the outer surfaces of the pair of rotating seats (41).

5. The pneumatic material stop mechanism of a straight thread rolling machine for steel bars according to claim 4, characterized in that: The bottom surface of the end of the flap piece (51) close to the pressing rod (3) is set as an inclined surface.

6. The pneumatic material blocking mechanism of a straight thread rolling machine for steel bars according to claim 4, characterized in that: The third fastener (54) includes a fastening bolt (541) and a positioning nut (422) threadedly connected to the positioning bolt (421). The fastening bolt (541) sequentially passes through one of the paddles (51), the baffle (53), the L-shaped plate (52), and the other paddle (51), and the fastening bolt (541) and the fastening nut (542) respectively abut tightly against the outer surfaces of this pair of paddles (51).

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