阅读说明：本技术 一种预应力钢棒小型墩粗系统及其墩粗方法 (Small prestressed steel bar upsetting system and upsetting method thereof ) 是由 樊华 许顺良 于 2019-09-27 设计创作，主要内容包括：一种预应力钢棒小型墩粗系统,其包括一个外壳,一个沿所述外壳长度方向设置在外壳中的夹紧驱动机构,一个沿所述夹紧活塞长度方向设置的墩头驱动机构,以及一个设置在所述外壳中的驱动总成。所述外壳包括一个内腔,一个与该内腔连通的进料部,以及一个设置在所述进料部上的进料孔。所述夹紧驱动机构包括一个沿所述外壳长度方向设置的夹紧活塞,至少两块周向设置在所述进料部中的钢棒夹片,一个设置在所述夹紧活塞上的夹紧活塞回程结构,以及一个设置在所述钢棒夹片上的夹片回程结构。本预应力钢棒小型墩粗系统通过墩头驱动机构穿设于夹紧驱动机构的结构设计,大大减小了装置体积,利于搬运且适用于多种施工环境,而进料定位精准,墩粗可靠稳定。(The small prestressed steel bar upsetting system comprises a shell, a clamping driving mechanism, a upsetting head driving mechanism and a driving assembly, wherein the clamping driving mechanism is arranged in the shell along the length direction of the shell, the upsetting head driving mechanism is arranged along the length direction of a clamping piston, and the driving assembly is arranged in the shell. The shell comprises an inner cavity, a feeding part communicated with the inner cavity, and a feeding hole formed in the feeding part. The clamping driving mechanism comprises a clamping piston arranged along the length direction of the shell, at least two steel bar clamping pieces arranged in the feeding part in the circumferential direction, a clamping piston return structure arranged on the clamping piston, and a clamping piece return structure arranged on the steel bar clamping pieces. This small-size mound thick system of prestressing force steel bar wears to locate the structural design who presss from both sides tight actuating mechanism through pier nose actuating mechanism, has reduced the device volume greatly, does benefit to the transport and is applicable to multiple construction environment, and the feeding location is accurate, and the mound is thick reliably stably.)

1. The small-size mound system of prestressing force steel bar for the mound of steel bar is thick, its characterized in that: the small prestressed steel bar upsetting system comprises a shell, a clamping driving mechanism arranged in the shell along the length direction of the shell, a pier head driving mechanism arranged in the clamping driving mechanism along the length direction of the clamping piston, and a drive assembly disposed in the housing, the housing including an interior cavity, a feed portion in communication with the interior cavity, and a feed hole provided on the feed portion, the inner diameter of the feed portion gradually decreasing toward the feed hole along the housing, press from both sides tight actuating mechanism includes one and follows shell length direction sets up clamping piston in the inner chamber, two piece at least circumference settings are in the feeding portion and with the rod iron clamping piece of feeding portion inner wall laminating, one sets up press from both sides tight piston return stroke structure on the clamping piston, and one sets up clamping piece return stroke structure on the rod iron clamping piece.

2. The prestressed steel bar small upsetting system as recited in claim 1, wherein: pier nose actuating mechanism includes one and follows clamping piston length direction wears to establish pier nose piston among the clamping piston, one set up in the pier nose die of the one end of being close to the feeding portion of pier nose piston, and one sets up pier nose piston return stroke structure on the pier nose piston.

3. The prestressed steel bar small upsetting system as recited in claim 1, wherein: the inner side of the steel bar clamping piece is provided with an arc-shaped notch, and the arc-shaped notch surrounds a clamping hole.

4. The prestressed steel bar small upsetting system as recited in claim 1, wherein: the clamping piston return structure comprises an annular step arranged on the outer wall of the clamping piston and a clamping piston return spring sleeved on the clamping piston, one end of the clamping piston return spring is connected to the annular step, and the other end of the clamping piston return spring is connected to the steel bar clamping piece.

5. The prestressed steel bar small upsetting system as recited in claim 1, wherein: clamping piece return stroke structure includes that at least two sets up the installation blind hole that just communicates each other between two liang of rod iron clamping pieces, at least two set up one by one radial return spring in the installation blind hole to and two at least axial return springs, axial return spring one end is connected on the rod iron clamping piece, the other end is connected the one end that the feed portion is close to the feed port.

6. The prestressed steel bar small upsetting system as recited in claim 2, wherein: be equipped with translation limit structure between clamp piston and the pier nose piston, translation limit structure includes one and sets up the spacing step on clamp piston middle part inner wall to and one sets up the spacing convex shoulder on pier nose piston outer wall, the pier nose piston is to feed port one end translation, spacing convex shoulder butt is on spacing step.

7. The prestressed steel bar small upsetting system as recited in claim 6, wherein: pier nose piston return stroke structure includes that one sets up the inner wall that clamping piston is close to pier nose die one end and the annular convex shoulder of inside extension to and a cover are established pier nose piston spring on the pier nose piston, pier nose piston spring one end is connected on annular convex shoulder, and the other end is connected on spacing convex shoulder.

8. The prestressed steel bar small upsetting system as recited in claim 1, wherein: the clamping piece return structure comprises at least two radial return springs arranged between the steel bar clamping pieces and at least one axial return spring arranged between the steel bar clamping pieces and the inner wall of the feeding part.

9. The prestressed steel bar small upsetting system as recited in claim 1, wherein: the driving assembly comprises an oil valve controller and a driving oil cylinder, wherein the oil valve controller is arranged at one end, far away from the feeding part, of the shell, and the driving oil cylinder is connected with the oil valve controller.

10. The upsetting method of the prestressed steel bar small-sized upsetting system as recited in any one of claims 1 to 9, wherein: the upsetting method comprises the following steps:

A. feeding. And sequentially passing a steel bar through the feeding hole and the clamping hole and inserting the steel bar into the upsetting forming groove.

B. And (4) clamping. The drive assembly drive press from both sides tight piston and remove to rod iron clamping piece one end, and the extrusion is pressed from both sides tight piston return spring, forces the one end butt and the application of force that press from both sides tight piston to be in on the rod iron clamping piece, drive rod iron clamping piece extrusion axial return spring and radial return spring follow simultaneously the rod iron clamping piece the feed portion inner wall to feed port one end removes to it is in to make interval between the rod iron clamping piece reduce and the application of force on the rod iron.

C. And (5) upsetting. The driving assembly drives the pier head piston to move towards one side of the steel plate clamping piece, the pier head piston return spring is extruded, and meanwhile, the pier head groove applies force on the steel bar and upsetting is completed.

D. And resetting. Drive assembly withdraws drive power, and the axial return spring after being extruded is in with the radial return spring force application simultaneously after being extruded on the steel bar clip, force the steel bar clip to move to clamping piston one end along the feeding portion inner wall, the clamping piston return spring application of force after being extruded is in on the clamping piston, force clamping piston to remove to the one end of keeping away from the feed port, the pier nose piston return spring application of force after being extruded is in on the clamping piston, force the pier nose piston to remove to the one end of keeping away from the feed port, promptly the steel bar clip, clamping piston and pier nose piston return to the normal position, take out the steel bar.

Technical Field

The invention belongs to the technical field of mechanical equipment, and particularly relates to a small prestressed steel bar upsetting system and a upsetting method thereof.

Background

Upsetting is a forging process that reduces the height of the billet and increases the cross-section. When the local cross section of the billet is increased, the local upset is called local upsetting. The upsetting function comprises the steps of obtaining a forging with a larger cross section and a smaller height from a blank with a smaller cross section; the cross section and the flat end surface of the blank are enlarged before punching; the forging ratio during the next step of drawing is improved; the transverse mechanical property of the forge piece is improved, and the anisotropy is reduced; repeated upsetting and stretching are carried out to break up carbide in the alloy tool steel so as to ensure that the carbide is uniformly distributed. Upsetting is a forging process in which the height of a blank is reduced and the cross-sectional area is increased, and is called upsetting. Local upsetting can be divided into two types of upsetting at two ends and upsetting at the middle according to different upsetting parts. The local upsetting method has great economic value, it is labor-saving, the flow direction of raw material and fiber tissue is in accordance with the shape of the part, and the method is adopted for producing many mechanism parts.

The steel bar upsetting machine is a common upsetting device in production and manufacturing. Current reinforcing bar pier nose machine clamping device separately sets up with the pier nose device alone, and overall structure is not compact, and the volume is great, is not suitable for multiple construction environment, and the transport is inconvenient, and reinforcing bar pier nose machine clamping device and pier nose device independent work need carry out the precision adjustment to the device moreover, and pier nose work efficiency is low and the precision is poor.

Disclosure of Invention

In view of the above, the present invention provides a small prestressed steel bar upsetting system with small size and easy transportation, so as to solve the above problems.

The small prestressed steel bar upsetting system comprises a shell, a clamping driving mechanism, a pier head driving mechanism and a driving assembly, wherein the clamping driving mechanism is arranged in the shell along the length direction of the shell, the pier head driving mechanism is arranged in the clamping driving mechanism along the length direction of a clamping piston, and the driving assembly is arranged in the shell. The shell comprises an inner cavity, a feeding part and a feeding hole, wherein the feeding part is communicated with the inner cavity, the feeding hole is formed in the feeding part, and the inner diameter of the feeding part is gradually reduced towards the feeding hole along the shell. Press from both sides tight actuating mechanism includes one and follows shell length direction sets up clamping piston in the inner chamber, two piece at least circumference settings are in the feeding portion and with the rod iron clamping piece of feeding portion inner wall laminating, one sets up press from both sides tight piston return stroke structure on the clamping piston, and one sets up clamping piece return stroke structure on the rod iron clamping piece.

Further, pier nose actuating mechanism includes one and follows clamping piston length direction wears to establish pier nose piston among the clamping piston, one set up in the pier nose die of the one end of pier nose piston near the feeding portion, and one set up pier nose piston return stroke structure on the pier nose piston.

Furthermore, an arc-shaped notch is formed in the inner side of the steel bar clamping piece, and the arc-shaped notch surrounds a clamping hole.

Furthermore, the clamping piston return structure comprises an annular step arranged on the outer wall of the clamping piston and a clamping piston return spring sleeved on the clamping piston, one end of the clamping piston return spring is connected to the annular step, and the other end of the clamping piston return spring is connected to the steel bar clamping piece.

Further, pier nose piston return stroke structure includes that one sets up the inner wall that clamping piston is close to pier nose die one end and the annular convex shoulder of inside extension to and a cover are established pier nose piston spring on the pier nose piston, pier nose piston spring one end is connected on the annular convex shoulder, and the other end is connected on spacing convex shoulder.

Further, be equipped with translation limit structure between clamping piston and the pier nose piston, translation limit structure is including setting up the spacing step on clamping piston middle part inner wall to and set up the spacing convex shoulder on pier nose piston outer wall, work as when pier nose piston is along the translation of direction passageway, spacing convex shoulder butt is on spacing step.

Furthermore, an annular convex shoulder extending inwards is arranged on the inner wall of one end, close to the pier nose concave die, of the clamping piston.

Further, the clamping piece return structure comprises at least two radial return springs arranged between the steel bar clamping pieces and at least one axial return spring arranged between the steel bar clamping pieces and the inner wall of the feeding portion.

Furthermore, one end of the upsetting female die, which is far away from the pier head piston, is provided with an upsetting forming groove.

Furthermore, the driving assembly comprises an oil valve controller arranged at one end of the shell far away from the feeding part, and a driving oil cylinder connected with the oil valve controller.

The steel bar upsetting method comprises the following steps:

A. feeding. And sequentially passing a steel bar through the feeding hole and the clamping hole and inserting the steel bar into the upsetting forming groove.

B. And (4) clamping. The drive assembly drive press from both sides tight piston and remove to rod iron clamping piece one end, and the extrusion is pressed from both sides tight piston return spring, forces the one end butt and the application of force that press from both sides tight piston to be in on the rod iron clamping piece, drive rod iron clamping piece extrusion axial return spring and radial return spring follow simultaneously the rod iron clamping piece the feed portion inner wall to feed port one end removes to it is in to make interval between the rod iron clamping piece reduce and the application of force on the rod iron.

C. And (5) upsetting. The driving assembly drives the pier head piston to move towards one side of the steel plate clamping piece, the pier head piston return spring is extruded, and meanwhile, the pier head groove applies force on the steel bar and upsetting is completed.

D. And resetting. Drive assembly withdraws drive power, and the axial return spring after being extruded is in with the radial return spring force application simultaneously after being extruded on the steel bar clip, force the steel bar clip to move to clamping piston one end along the feeding portion inner wall, the clamping piston return spring application of force after being extruded is in on the clamping piston, force clamping piston to remove to the one end of keeping away from the feed port, the pier nose piston return spring application of force after being extruded is in on the clamping piston, force the pier nose piston to remove to the one end of keeping away from the feed port, promptly the steel bar clip, clamping piston and pier nose piston return to the normal position, take out the steel bar.

Compared with the prior art, the small prestressed steel bar upsetting system has the advantages that the structural design that the upsetting driving mechanism penetrates through the clamping driving mechanism is adopted, so that the clamping driving mechanism and the upsetting driving mechanism are more compact, the device size is greatly reduced, the carrying is facilitated, the small prestressed steel bar upsetting system is suitable for various construction environments, the feeding and positioning accuracy of the integrated clamping upsetting device is high, and the upsetting is reliable and stable.

Drawings

Fig. 1 is a schematic structural diagram of a small prestressed steel bar upsetting system provided by the invention.

Fig. 2 is a schematic structural diagram of a steel bar clamping piece of the small prestressed steel bar upsetting system provided by the invention.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1-2, it is a schematic structural diagram of a small prestressed steel bar upsetting system provided by the present invention. A prestressed steel bar small upsetting system comprises a housing 10, a clamping driving mechanism 20 arranged in the housing 10 along the length direction of the housing 10, a upsetting driving mechanism 30 arranged in the clamping driving mechanism 20 along the length direction of a clamping piston, and a driving assembly 40 arranged in the housing 10. It is contemplated that the prestressed steel bar small upsetting system may further include other functional modules, such as an assembling structure, a mounting assembly, an electrical connection assembly, etc., which are well known to those skilled in the art and will not be described in detail herein.

The housing 10 includes an inner cavity 11, a feeding portion 12 communicating with the inner cavity 11, and a feeding hole 13 provided in the feeding portion 12, and the inner diameter of the feeding portion 12 is gradually reduced toward the feeding hole 13 along the housing 10. It is contemplated that the axial length of the feed hole 13 is relatively large so that the steel bar can still maintain a straight line state when passing through the feed hole 13, thereby facilitating the accurate entry of the upset end of the steel bar into the upset forming groove 321.

The clamping driving mechanism 20 comprises a clamping piston 21 arranged in the inner cavity 11 along the length direction of the shell 10, at least two steel bar clamping pieces 22 arranged in the feeding portion 12 and attached to the inner wall of the feeding portion 12, a clamping piston return structure 23 arranged on the clamping piston 21, and a clamping piece return structure 24 arranged on the steel bar clamping pieces 22. In this embodiment, the clamping piston 21 is arranged in the housing 10 to drive the steel bar clamping pieces 22, and the clamping process of the steel bar is realized through the matching with the inner wall of the feeding part 12, so that the traditional external steel bar clamping piece 22 driving structure is replaced, and the structure of the whole prestressed steel bar small upsetting system is more compact and the volume is reduced. In this embodiment, the feeding portion 12 has three steel bar clamping pieces 22, an arc-shaped notch 221 is formed in the inner side of each steel bar clamping piece 22, and the arc-shaped notch 221 surrounds one clamping hole 222. It is conceivable that the inner diameter of the clamping hole 222 is always smaller than the outer diameter of the steel rod, so that the contact area between the steel rod clamping piece 22 and the steel rod is ensured to be large while the passing performance of the steel rod is ensured in the clamping process, the clamping effect is enhanced, and the abrasion between the steel rod and the steel rod clamping piece 22 is reduced. Clamping piston return structure 23 includes a setting annular step 231 on the clamping piston 21 outer wall, and a cover is established clamping piston return spring 232 on the clamping piston 21, clamping piston return spring 232 one end is connected on annular step 231, and the other end is connected on the rod iron clamping piece 22. In addition, the clip return structure 24 includes at least two radial return springs 241 disposed between the steel bar clips 22, and at least one axial return spring 242 disposed between the steel bar clips 22 and the inner wall of the feed portion 12. The radial return spring 241 is connected with the adjacent steel bar clamping piece 22, and the steel bar clamping piece 22 is provided with an abdicating blind hole 223 for the radial return spring 241 to be clamped in. One end of the axial return spring 242 is connected to the steel bar clip 22, and the other end is connected to the inner wall of the feeding portion 12 near one end of the feeding hole 13.

Pier nose actuating mechanism 30 includes one and follows clamping piston 21 length direction wears to establish pier nose piston 31 in the clamping piston 21, one set up in pier nose die 32 of the one end that is close to feed portion 12 of pier nose piston 31, and one sets up pier nose piston return stroke structure 34 on the pier nose piston 31. It is conceivable that the abutment piston 31 is provided in the clamping piston 21, increasing the accuracy of the movement guidance of the abutment piston 31, while also enhancing the compactness of the overall structure.

Be equipped with translation limit structure 33 between clamping piston 21 and the pier nose piston 31, translation limit structure 33 is including setting up the spacing step 331 on clamping piston 21 middle part inner wall to and set up the spacing convex shoulder 332 on pier nose piston 31 outer wall, work as pier nose piston 31 is along the direction passageway translation time, spacing convex shoulder 332 butt is on spacing step 331. The inner wall of the clamping piston 21 near one end of the pier nose female die 32 is provided with an inwardly extending annular shoulder 341. Pier nose piston return structure 34 includes that one sets up the inner wall that clamping piston 21 is close to pier nose die 32 one end and the annular shoulder 341 of inside extension to and a cover establish pier nose piston return spring 342 on pier nose piston 31, pier nose piston return spring 342 one end is connected on annular shoulder 341, and the other end is connected on spacing shoulder 332. And one end of the upsetting female die, which is far away from the upsetting piston 31, is provided with an upsetting forming groove 321.

The driving assembly 40 includes an oil valve controller 41 disposed at an end of the housing 10 away from the feeding portion 12, and a driving cylinder 42 connected to the oil valve controller 41. It is conceivable that the oil valve controller 41 and the driving cylinder 42 are common structures in mechanical driving technology, and therefore, detailed description thereof is omitted in this embodiment. The clamping piston 21 and the heading piston 31 are controlled and driven by the oil valve controller 41, respectively.

The upsetting method comprises the following steps:

A. feeding. A steel rod is inserted through the feed hole 13, the clamping hole 222 and into the upsetting forming groove 321 in sequence.

B. And (4) clamping. Drive assembly 40 drive press from both sides tight piston 21 and remove to rod iron clamping piece 22 one end, and extrusion clamp piston return spring 232 forces the one end butt and the application of force that press from both sides tight piston 21 to be in on the rod iron clamping piece 22, drive rod iron clamping piece 22 extrudes axial return spring 242 and radial return spring 241, follows simultaneously rod iron clamping piece 22 the feed portion 12 inner wall to feed port 13 one end removes to make interval between the rod iron clamping piece 22 reduce and the application of force be in on the rod iron.

C. And (5) upsetting. The drive assembly 40 drives the pier head piston 31 to move towards one side of the steel plate clamping piece, the return spring of the pier head piston is extruded, and meanwhile, the pier head groove applies force on the steel bar and upsetting is completed.

D. And resetting. Drive assembly 40 withdraws drive power, and axial return spring 242 after being extruded is in with radial return spring 241 after being extruded simultaneously the application of force is in on the rod iron clamping piece 22, force rod iron clamping piece 22 to move to clamping piston 21 one end along the feeding portion 12 inner wall, the clamping piston return spring 232 application of force after being extruded is in on the clamping piston 21, force clamping piston 21 to the one end of keeping away from feed port 13 and move, the pier nose piston 31 application of force after being extruded is in on the clamping piston 21, force pier nose piston 31 to the one end of keeping away from feed port 13 and move, promptly rod iron clamping piece 22, clamping piston 21 and pier nose piston 31 return to the normal position, take out the rod iron.

According to the small prestressed steel bar upsetting system, due to the structural design that the upsetting driving mechanism 30 penetrates through the clamping driving mechanism 20, the space between the clamping driving mechanism 20 and the upsetting driving mechanism 30 is more compact, the device size is greatly reduced, the small prestressed steel bar upsetting system is beneficial to carrying and suitable for various construction environments, and the integrated clamping upsetting device is high in feeding and positioning accuracy and reliable and stable in upsetting.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.