CN215966093U - Reinforcing steel bar thread rolling machine - Google Patents

Abstract

The utility model discloses a reinforcing steel bar thread rolling machine, which comprises a machine base, a feed shaft and a movable support arranged on the machine base, wherein the movable support is provided with a power source and a driving shaft, the driving shaft is provided with a thread rolling mechanism, the feed shaft is provided with a feed part in threaded fit, the feed part is fixed on the machine base, the driving shaft drives the feed shaft to rotate, and the feed shaft drives the movable support and the driving shaft to horizontally move. The steel bar thread rolling machine has the advantages of small thread rolling error, high precision, high thread rolling quality and high connection strength of the processed steel bar and the sleeve.

Description

Reinforcing steel bar thread rolling machine

Technical Field

The utility model relates to the technical field of reinforcing steel bar processing mechanical equipment, in particular to equipment suitable for reinforcing steel bar thread rolling processing.

Background

The deformed steel bar is commonly known as hot rolled ribbed steel bar and is a steel material which is necessary for more than medium-sized building components. In the use process of a building, the thread steel needs to be provided with threads at the end part in a pressing mode, and then the thread steel is connected through a steel bar connecting sleeve for use. At present, the machine tool for processing the external thread at the end part of the ribbed steel bar is divided into a straight rolling machine tool and a rib stripping machine tool. During the operation of the straight rolling machine tool, the thread rolling wheel is pushed forwards to roll threads at the end part of the ribbed steel bar, and after the thread rolling wheel is machined, the thread rolling wheel rotates reversely and retreats. In the operation of the rib stripping machine tool, the end part of the ribbed steel bar needs to be stripped, namely, the rib is stripped, then the ribbed steel bar is sent into a screw head to be processed into the end part thread, and the ribbed steel bar is drawn out after the processing is finished. No matter which kind of lathe, its feed usually adopts artifical semi-autoloading or cylinder to impel the thread rolling, and artifical intensity of labour is big, operational environment is dangerous, inefficiency, and the forward feed rate of thread rolling mechanism does not have linkage and accurate match relation with the screw pitch of reinforcing bar moreover, and the screw pitch of reinforcing bar must have accumulative tolerance, and machining precision hangs down the scheduling problem. In addition, because the ribbed steel bar is not round and the surface is not flat, the straightness of the steel bar is not high, radial play is easy to occur in the steel bar conveying process, the machining precision and the service life of the thread rolling wheel are further influenced, the machined threads are easy to be uneven in height, only high-point connection is adopted when the thread rolling wheel is connected with a threaded sleeve, and the threads are not completely meshed and connected, so that the connection strength is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a steel bar thread rolling machine which has the advantages of small thread rolling error, high precision and high thread rolling quality, and the processed steel bar and a sleeve have high connection strength.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a reinforcing bar thread rolling machine, includes the frame, still includes the feed shaft and sets up the portable support on the frame, is equipped with power supply and driving shaft on the portable support, is equipped with thread rolling mechanism on the driving shaft, and the feed shaft is equipped with the feed unit through the screw-thread fit, and the feed unit is fixed on the frame, the power supply drives driving shaft and feed shaft and rotates, and the feed shaft drives portable support and driving shaft horizontal motion.

Preferably, the driving shaft and the feeding shaft are coaxially arranged.

Preferably, the driving shaft drives the feeding shaft to rotate through a gear transmission mechanism, the feeding shaft is sleeved outside the driving shaft through the rotatable sleeve of the outer wall of the bearing, and the driving shaft is rotatably connected with the inner wall of the bearing.

Preferably, the gear transmission mechanism comprises a first gear arranged coaxially with the driving shaft, a second gear meshed with the first gear, a third gear arranged coaxially with the second gear, and a fourth gear meshed with the third gear, and the fourth gear is arranged coaxially with the feeding shaft.

Preferably, still include guiding mechanism, guiding mechanism is equipped with the uide bushing with the uide post complex including setting up the guide post on the frame on portable support, and the uide post is worn to establish on the uide bushing, and the uide bushing can slide on the guide post.

Preferably, the power source includes a motor and a speed reducer.

Preferably, the speed reducer is a worm gear speed reducer, and the driving shaft is arranged on a hollow shaft at the output end of the worm gear speed reducer in a penetrating mode.

Preferably, the feeding component comprises a feeding sleeve with threads inside or a feeding shaft rod with threads outside, the feeding shaft is matched with the feeding sleeve through external threads, and the feeding shaft is matched with the feeding shaft rod through internal threads.

Preferably, the clamping device further comprises a clamping mechanism, the clamping mechanism comprises a first clamp and a second clamp which are oppositely arranged and can be clamped and loosened, and elastic supports are arranged on the outer sides of the first clamp and the second clamp respectively.

Further preferably, the elastic support is a rubber pad.

In the technical scheme, the output end of the speed reducer provides rotary power for the driving shaft so as to drive the thread rolling mechanism to rotate; meanwhile, the feed shaft is driven by the driving shaft to realize synchronous rotation, the feed shaft which synchronously rotates is matched with the feed sleeve through external threads, the thread feed motion of the feed shaft driven by the driving shaft is realized, the feed of the feed shaft enables the movable support to be guided and slid on the guide post by virtue of the guide sleeve, so that the driving shaft realizes the thread feed motion, the synchronous differential rotation of the driving shaft and the feed shaft can be completed by only driving one motor, the aim of accurately matching the rotary motion and the feed motion of the thread rolling mechanism all the time is fulfilled, the accumulated tolerance of the thread pitch of the reinforcing steel bar is avoided, and the thread rolling error is small, the precision is high, and the thread rolling quality is improved; through with first clamp and second clamp elastic support for behind first clamp and the second clamp tight reinforcing bar of clamp, the reinforcing bar can elastically adapt to thread rolling mechanism thread rolling process, alleviates the uneven phenomenon of height of screw thread, further improves thread rolling precision, thread rolling quality, thereby improves reinforcing bar and telescopic joint strength.

Drawings

FIG. 1 is a schematic view of the overall structure of the steel bar thread rolling machine;

FIG. 2 is a front view of the steel bar thread rolling machine;

FIG. 3 is a schematic top view of the steel bar rolling machine;

fig. 4 is a schematic sectional view of the front view structure of the reinforcing bar thread rolling machine.

Detailed Description

The utility model is further illustrated by the following specific examples in conjunction with the accompanying drawings.

As shown in fig. 1 to 4, the reinforcing steel bar thread rolling machine comprises a machine base 10, a feed shaft 30 and a movable support 50 arranged on the machine base 10, wherein a power source is arranged on the movable support 50, the power source comprises a motor 11 and a speed reducer 12 rotationally connected with the motor 11, and the output end of the speed reducer 12 is connected with a driving shaft 13 to drive the driving shaft 13 to rotate; the driving shaft 13 is provided with a thread rolling mechanism 40, and the thread rolling mechanism 40 and the driving shaft 13 synchronously rotate; the feeding shaft 30 is provided with a feeding part 31 through thread matching, the feeding part 31 is fixed on the machine base 10, the driving shaft 13 drives the feeding shaft 30 to synchronously rotate, the feeding shaft 30 generates feeding motion through thread matching with the feeding part 31, so that the movable support 50 and the driving shaft 13 are driven to horizontally move to realize the thread feeding motion of the driving shaft 13, the synchronous rotation of the driving shaft 13 and the feeding shaft 30 can be completed only by driving one motor 11, the purpose of always accurately matching the rotating motion and the feeding motion of the thread rolling mechanism 40 is achieved, the accumulated tolerance of the thread pitch of the steel bar after thread rolling is avoided, and the thread rolling error is small, the precision is high, and the thread rolling quality is improved. In this embodiment, the feeding member 31 is a feeding sleeve 32 with threads inside, and the feeding shaft 30 is engaged with the feeding sleeve 32 through external threads to realize a thread feeding motion. In another embodiment, the feeding member may be an externally threaded feeding shaft (not shown), in which case the feeding shaft 30 is internally threaded to engage the feeding shaft for threaded feeding movement.

In a preferred embodiment, the reducer 12 is a worm gear reducer, and the driving shaft 13 is arranged on a hollow shaft at the output end of the worm gear reducer in a penetrating manner; particularly, the driving shaft 13 can be arranged coaxially with the feeding shaft 30, the overall structure of the reinforcing steel bar thread rolling machine is further simplified, the thread rolling mechanism 40 is driven to rotate by the side of the driving shaft 13, the feeding shaft 30 and the driving shaft 13 synchronously rotate at the same speed and drive the movable support 50 and the driving shaft 13 to horizontally move under the thread matching of the feeding sleeve 32, so that the feeding shaft 30 realizes thread feeding movement, the rotary movement and the feeding movement of the thread rolling mechanism 40 are always accurately matched, the accumulated tolerance of the thread pitch of reinforcing steel bars after thread rolling is avoided, and the thread rolling error is small, the precision is high, and the thread rolling quality is improved.

In a preferred embodiment, the reinforcing steel bar thread rolling machine further comprises a guide mechanism 60, the guide mechanism 60 comprises a guide post 61 arranged on the machine base 10, a guide sleeve 51 matched with the guide post 61 is arranged on the movable support 50, the guide post 61 is arranged on the guide sleeve 51 in a penetrating mode, and the guide sleeve 51 can realize guide sliding under the guide effect of the guide post 61, so that the stress of the feeding part 31 is balanced, the thread feeding motion precision of the driving shaft 13 and the thread rolling mechanism 40 is further improved, and the service life of the feeding part 31 is further prolonged.

In a preferred embodiment, the driving shaft 13 drives the feeding shaft 30 to rotate through the gear transmission mechanism 20, the feeding shaft 30 is rotatably sleeved outside the driving shaft 13 through the outer wall of the bearing 14, the driving shaft 13 is rotatably connected with the inner wall of the bearing 14, so that the driving shaft 13 and the feeding shaft 30 can rotate in a differential speed, and meanwhile, the feeding shaft 30 can synchronously transmit axial force generated when the feeding shaft 30 is in thread feeding through the bearing 14 to the driving shaft 13, so that the driving shaft 13 realizes thread feeding motion. In the present embodiment, the gear transmission mechanism 20 includes a first gear 21 provided coaxially with the motive shaft 13, a second gear 22 intermeshed with the first gear 21, a third gear 23 provided coaxially with the second gear 22, and a fourth gear 24 intermeshed with the third gear 23, and the fourth gear 24 is provided coaxially with the feed shaft 30. For example, specific data is combined, the output end of the speed reducer 12 drives the first gear 21 to rotate synchronously through the driving shaft 13, the transmission ratio of the first gear 21 to the second gear 22 is 1:1, and the transmission ratio of the third gear 23 to the fourth gear 24 is 2:1, so that the driving shaft 13 drives the first gear 21 to rotate for one circle, the second gear 22 and the third gear 23 also rotate for one circle synchronously, and the fourth gear 24 only rotates for one half circle along with the rotation; taking the example that the driving shaft 13 needs to process the steel bar with 3mm pitch, the feeding amount of the driving shaft 13 rotating one circle is 3mm, then the pitch of the feeding shaft 30 and the feeding sleeve 32 can be selected to be 6mm with greatly increased bearing capacity, meanwhile, the rotating speed of the feeding shaft 30 is reduced in an equal ratio, so that the abrasion amount of the feeding shaft 30 and the feeding sleeve 32 is greatly reduced, and the service life is greatly prolonged. The feeding shaft 30 synchronously transmits the axial force generated when the feeding shaft 30 is in threaded feeding through the bearing 14 under the threaded pushing of the feeding sleeve 32 to the driving shaft 13, and the movable support 50 is promoted to guide and slide on the guide post 61 by the guide sleeve 51, so that the rotary motion and the feeding motion of the thread rolling mechanism 40 are always accurately matched, and the thread rolling error is small, the precision is high, and the thread rolling quality is improved. Compared with the traditional manual feeding or air cylinder propelling feeding, the constant-speed feeding of the thread rolling mechanism 40 cannot be ensured, and the rotating speed of the thread rolling mechanism 40 cannot be matched with the feeding speed; when the thread rolling mechanism 40 rolls the steel bar, the steel bar can generate reverse force on the thread rolling mechanism 40, and then the reverse force is applied to manual feeding or air cylinder propelling feeding to ensure that the feeding speed is extremely difficult to be accurately controlled, and the propelling speed is slightly higher or slower and is reflected in the accumulated tolerance of the thread pitch of the steel bar after thread rolling, so that the thread pitch is not gradually increased to be smaller or is gradually increased to be larger. The simple control of the feeding of the thread rolling mechanism 40 by another motor will cause the increase of the cost and the calibration and matching work of the rotating speed of the motor and the rotating speed of the thread rolling mechanism 40, so that the thread rolling process is extremely complicated.

In another preferred embodiment, the reinforcing bar thread rolling machine further comprises a clamping mechanism 70, wherein the clamping mechanism 70 comprises a first clamp 71 and a second clamp 72 which are oppositely arranged and can be clamped and released, and the clamping and the releasing of the reinforcing bars are realized by adjusting the relative positions of the first clamp 71 and the second clamp 72. In this embodiment, the elastic supports 73 are arranged on the outer sides of the first clamp 71 and the second clamp 72, and the elastic supports 73 can be paved on the outer sides of the first clamp 71 and the second clamp 72 by using wear-resistant rubber pads with good elasticity, so that the reinforcing steel bars clamped by the first clamp 71 and the second clamp 72 can elastically adapt to the thread rolling process of the thread rolling mechanism 40 on the reinforcing steel bars under the action of the elastic supports 73, the machined surfaces of the reinforcing steel bars and the thread heads of the thread rolling mechanism 40 or the axial direction of the thread rolling wheels can be kept consistent to a greater extent, the phenomenon of uneven thread height of the machined reinforcing steel bars is effectively relieved when the straightness of the reinforcing steel bars is not high, the thread rolling precision and the thread rolling quality are further improved, and the connection strength between the reinforcing steel bars and the sleeve is further improved.

The above embodiments are only a few illustrations of the inventive concept and implementation, not limitations thereof, and the technical solutions without substantial changes are still within the scope of protection under the inventive concept.

Claims (10)

1. The utility model provides a reinforcing bar thread rolling machine, includes the frame, its characterized in that still includes the feed shaft and sets up the portable support on the frame, is equipped with power supply and driving shaft on the portable support, is equipped with thread rolling mechanism on the driving shaft, and the feed shaft is equipped with the feeding part through screw-thread fit, and the feeding part is fixed on the frame, the power supply drives the driving shaft and rotates with the feed shaft, and the feed shaft drives portable support and driving shaft horizontal motion.

2. The reinforcing bar thread roller as claimed in claim 1, wherein the driving shaft and the feeding shaft are coaxially disposed.

3. The reinforcing bar thread roller as claimed in claim 1, wherein the driving shaft drives the feeding shaft to rotate through a gear transmission mechanism, the feeding shaft is rotatably sleeved outside the driving shaft through an outer bearing wall, and the driving shaft is rotatably connected with an inner bearing wall.

4. The reinforcing bar thread roller as claimed in claim 3, wherein the gear transmission mechanism includes a first gear coaxially disposed with the driving shaft, a second gear intermeshed with the first gear, a third gear coaxially disposed with the second gear, and a fourth gear intermeshed with the third gear, and the fourth gear is coaxially disposed with the feeding shaft.

5. The reinforcing bar thread rolling machine according to claim 1 or 2, further comprising a guiding mechanism, wherein the guiding mechanism comprises a guiding post arranged on the machine base, a guiding sleeve matched with the guiding post is arranged on the movable support, the guiding post is arranged on the guiding sleeve in a penetrating way, and the guiding sleeve can slide on the guiding post.

6. The rebar thread roller of claim 1, wherein the power source comprises a motor and a reducer.

7. The reinforcing bar thread rolling machine according to claim 6, wherein the reducer is a worm gear reducer, and the driving shaft is arranged on a hollow shaft at the output end of the worm gear reducer in a penetrating mode.

8. The reinforcing bar thread roller as claimed in claim 1 or 2, wherein the feed member comprises a feed sleeve internally threaded or a feed shaft externally threaded, the feed shaft being externally threaded to engage with the feed sleeve or internally threaded to engage with the feed shaft.

9. The reinforcing bar thread rolling machine according to claim 1 or 2, further comprising a clamping mechanism, wherein the clamping mechanism comprises a first clamp and a second clamp which are oppositely arranged and can be clamped and loosened, and an elastic support is arranged on the outer side of each of the first clamp and the second clamp.

10. The rebar thread roller of claim 9, wherein the resilient support is a rubber pad.

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