Four-column hydraulic straightening machine

Abstract

The utility model discloses a four-column hydraulic straightening machine which comprises a base, a straightening table is arranged at the top of the base, a fixing frame is fixedly arranged at the position, between two sliding frames, of the straightening table, and a supporting block is fixedly arranged in the center of the top of the fixing frame. And the positions, located on the two sides of the bar, of the fixing frame are correspondingly provided with two stop blocks with the adjustable distance, a through groove is formed in the top of the straightening table in the length direction, a knob screw is arranged in the through groove in a sliding mode, and the threaded end of the knob screw is in threaded connection with the bottom of the sliding frame. The utility model relates to the technical field of machining, the hydraulic straightening machine realizes the control on the bending direction of a bar material by arranging the baffle blocks with adjustable spacing, so that the bending direction of the bar material is always in the vertical direction, the bar material is prevented from rolling during straightening, the position of the sliding frame can be locked through the through groove and the knob screw after the sliding frame slides, and the working efficiency is improved. And the movable sliding frame is prevented from driving the bar to deviate, so that the hydraulic straightening machine is higher in bar straightening accuracy and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a four-column hydraulic straightening machine. Background Art

[0002] The screw pump is a single screw transport pump. Its main working parts are the screw of the eccentric spiral body (called the rotor) and the screw bushing with a double-line spiral surface on the inner surface (called the stator). Its working principle is that when the motor drives the pump shaft to rotate, the screw rotates around its own axis on the one hand, and rolls along the inner surface of the bushing on the other hand, thus forming a sealed chamber of the pump. Before manufacturing the rotor of the screw pump, a hydraulic straightening machine is required to straighten the bar material. After straightening, the bar material is processed into a screw pump rotor so that the rotor can achieve the accuracy of matching with the stator. At present, the hydraulic straightening machine mainly includes a straightening table and a hydraulic device. The bar material is placed on the straightening table, and the hydraulic device is used to press down to restore the bar material to a straight state. There are usually two sliding frames and two fixed frames on the straightening table. The sliding frame can adjust its position according to the length and bending position of the rotor, and the fixed frame is used to judge whether the bar material is straight. Although this hydraulic straightening machine can meet the straightening of the screw pump rotor, it still has some shortcomings. First, because the fixed frame only limits the height of the bar to be straightened, but does not limit the side of the bar, the bar is prone to rolling during the straightening process, which in turn affects the straightening accuracy; secondly, the sliding frame is not effectively fixed after adjusting the position, which makes it likely that the bar will deviate with the sliding frame, which in turn affects the straightening effect of the bar. To this end, we provide a four-column hydraulic straightening machine to solve the above problems. Utility Model Content

[0003] In order to solve the above-mentioned problem, that is, to solve the problem raised by the above-mentioned background technology, the utility model proposes a four-column hydraulic straightening machine, including a base, a straightening platform is arranged on the top of the base, sliding frames are slidably arranged on both sides of the top of the straightening platform, the base is provided with a hydraulic cylinder above the straightening platform, and a straightening pressure block is installed on the movable end of the hydraulic cylinder, the straightening platform is located between the two sliding frames and a fixed frame is fixedly arranged, a support block is fixedly arranged at the top center position of the fixed frame, and the fixed frame is located on both sides of the rod material and has two stoppers with adjustable spacing correspondingly arranged, a through groove is opened on the top of the straightening platform along the length direction, a knob screw is slidably arranged inside the through groove, and the threaded end of the knob screw is threadedly connected to the bottom of the sliding frame.

[0004] Preferably, two connecting plates are arranged in parallel between the two sliding frames, a double-headed screw is rotatably arranged between the two connecting plates, threaded blocks are threadedly connected on both sides of the outer walls of the double-headed screw, slides are fixedly arranged on the tops of the two threaded blocks, and the multiple stop blocks are respectively fixedly arranged on both sides of the tops of the two slides.

[0005] Preferably, a slide groove is provided at the bottom of the slide plate corresponding to the fixing frame, and the slide groove is slidably arranged on the top of the fixing frame.

[0006] Preferably, two columns are provided on both sides of the straightening platform at the top of the base, and a top frame is fixedly provided on the top of the plurality of columns. The interior of the top frame is fixedly connected to a hydraulic cylinder, and the hydraulic cylinder is driven and controlled by a hydraulic system.

[0007] Preferably, two groups of rollers are provided at the bottom of the sliding frame, and the rollers roll on the top side edges of the straightening platform.

[0008] The beneficial technical effect of the utility model is as follows: the hydraulic straightening machine controls the bending direction of the bar by setting a stop block with adjustable spacing, so that the bending direction of the bar is always in the up and down direction, avoiding the bar from rolling during straightening; at the same time, the sliding frame can lock the position through the through groove and the knob screw after sliding, avoiding the movable sliding frame from causing the bar to deviate, making the hydraulic straightening machine more accurate and reliable in straightening the bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The main structural schematic diagram of the utility model is shown.

[0010] Figure 2 A three-dimensional structural schematic diagram of the fixing frame of the utility model is shown.

[0011] Figure 3 The cross-sectional structure diagram of the straightening platform of the utility model is shown.

[0012] Figure 1: base; 2: straightening table; 3: hydraulic cylinder; 4: straightening block; 5: sliding frame; 6: fixed frame; 7: support block; 8: stop block; 9: connecting plate; 10: double-headed screw; 11: threaded block; 12: slide plate; 13: roller; 14: through groove; 15: knob screw; 16: slide groove; 17: column; 18: top frame; 19: hydraulic system. DETAILED DESCRIPTION

[0013] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0014] The utility model proposes a four-column hydraulic straightening machine, comprising a base 1, a straightening platform 2 is arranged on the top of the base 1, sliding frames 5 are slidably arranged on both sides of the top of the straightening platform 2, so that the rod material can be placed in the groove of the sliding frame 5, the base 1 is arranged above the straightening platform 2 with a hydraulic cylinder 3, the movable end of the hydraulic cylinder 3 is installed with a straightening pressing block 4, the straightening pressing block 4 can be pressed down by the work of the hydraulic cylinder 3, so that the straightening pressing block 4 can straighten the rod material, the straightening platform 2 is located between the two sliding frames 5 and a fixed frame 6 is fixedly arranged, a support block 7 is fixedly arranged at the top center of the fixed frame 6, and the height of the support block 7 is consistent with the inner groove of the sliding frame 5. The height can be kept consistent so that the rod can contact the support block 7 after straightening, and the fixed frame 6 is located on both sides of the rod and has two stoppers 8 with adjustable spacing. The design purpose is that when the diameters of the rods are different, the stoppers 8 can make the bending directions of rods of different specifications always in the up and down directions after adjusting the position. A through groove 14 is opened on the top of the straightening table 2 along the length direction, and a knob screw 15 is slidingly arranged inside the through groove 14. The threaded end of the knob screw 15 is threadedly connected to the bottom of the sliding frame 5. The sliding frame 5 can be locked in position through the through groove 14 and the knob screw 15 after sliding to prevent the movable sliding frame 5 from causing the rod to deviate.

[0015] Specifically, two connecting plates 9 are arranged in parallel between the two sliding frames 5, and a double-headed screw 10 is rotatably arranged between the two connecting plates 9. The user can control the rotation of the double-headed screw 10 through the handle at one end of the double-headed screw 10. Threaded blocks 11 are threadedly connected on both sides of the outer wall of the double-headed screw 10, and slides 12 are fixedly arranged on the top of the two threaded blocks 11. The rotating threaded block 11 can drive the two slides 12 to move toward each other through the threaded connection with the double-headed screw 10. Multiple blocks 8 are respectively fixedly arranged on both sides of the top of the two slides 12, and the moving slide 12 can control the position of the block 8.

[0016] Specifically, a slide groove 16 is provided at the bottom of the slide plate 12 corresponding to the fixing frame 6 , and the slide groove 16 is slidably arranged on the top of the fixing frame 6 . Through the design of the slide groove 16 , the movement of the slide plate 12 can be limited, thereby making its movement more stable.

[0017] Specifically, two columns 17 are provided on both sides of the straightening platform 2 at the top of the base 1, and a top frame 18 is fixedly provided on the top of the multiple columns 17. The interior of the top frame 18 is fixedly connected to the hydraulic cylinder 3. The columns 17 and the top frame 18 can fix the position of the hydraulic cylinder 3. The hydraulic cylinder 3 is driven and controlled by the hydraulic system 19. The user can realize the drive control of the hydraulic cylinder 3 through the hydraulic system 19, thereby achieving the purpose of straightening the bar.

[0018] Specifically, two groups of rollers 13 are provided at the bottom of the sliding frame 5, and the rollers 13 roll on the top side edge of the straightening platform 2. The sliding frame 5 can move on the top of the straightening platform 2 with the rollers 13, and a clamping ring with a larger diameter is integrally formed on the outer side of the roller 13. The clamping ring is clamped on the side edge of the straightening platform 2, so that the sliding frame 5 can move horizontally stably.

[0019] According to the personnel in this field, all the electrical parts and components in this case are universal standard parts or components known to the technical personnel in this field, and their structures and principles can be known to the technical personnel through technical manuals or through conventional experimental methods. The models are compatible with this solution and can operate normally. All the electrical parts in this case are connected to the power supply adapted to them through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field and will not be explained in the electrical control.

[0020] Working principle: When using the four-column hydraulic straightening machine, the rod is placed in the top grooves of the two sliding frames 5, and then the position of the sliding frames 5 is adjusted according to the bending position of the rod and the knob screw 15 is tightened to lock the position of the sliding frames 5. At this time, the spacing of the corresponding blocks is adjusted according to the diameter of the rod itself. The user can rotate the double-headed screw 10 through the handle, and the rotating screw can drive the two threaded blocks 11 to move horizontally. At this time, the threaded block 11 can drive the two slides 12 to move toward each other, and then drive the block 8 to adjust the spacing. After the adjustment is completed, the bending direction of the rod can always be in the up and down direction. When ready, the hydraulic system 19 can be used to control the hydraulic cylinder 3 to work, and the hydraulic cylinder 3 can drive the straightening pressure block 4 to press against the rod and press down until the bottom of the rod contacts the support block 7. At this time, the rod can be accurately straightened.

[0021] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0022] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0025] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A four-column hydraulic straightening machine, comprising a base (1), Features: A straightening platform (2) is arranged on the top of the base (1), and sliding frames (5) are slidably arranged on both sides of the top of the straightening platform (2). A hydraulic cylinder (3) is arranged on the base (1) above the straightening platform (2), and a straightening pressure block (4) is installed on the movable end of the hydraulic cylinder (3). A fixed frame (6) is fixedly arranged between the two sliding frames (5) on the straightening platform (2), and a supporting block (7) is fixedly arranged at the central position of the top of the fixed frame (6), and two stoppers (8) with adjustable spacing are correspondingly arranged on both sides of the bar material on the fixed frame (6). A through groove (14) is opened on the top of the straightening platform (2) along the length direction, and a knob screw (15) is slidably arranged inside the through groove (14), and the threaded end of the knob screw (15) is threadedly connected to the bottom of the sliding frame (5).

2. A four-column hydraulic straightening machine according to claim 1, Features: Two connecting plates (9) are arranged in parallel between the two sliding frames (5), a double-headed screw (10) is rotatably arranged between the two connecting plates (9), both sides of the outer wall of the double-headed screw (10) are threadedly connected with threaded blocks (11), the tops of the two threaded blocks (11) are fixedly provided with slide plates (12), and the plurality of stop blocks (8) are respectively fixedly provided on both sides of the tops of the two slide plates (12).

3. A four-column hydraulic straightening machine according to claim 2, Features: A sliding groove (16) is provided at the bottom of the slide plate (12) corresponding to the fixing frame (6), and the sliding groove (16) is slidably arranged on the top of the fixing frame (6).

4. A four-column hydraulic straightening machine according to claim 1, Features: The top of the base (1) is located on both sides of the straightening platform (2) and is provided with two columns (17). A top frame (18) is fixedly provided on the top of the plurality of columns (17). The interior of the top frame (18) is fixedly connected to a hydraulic cylinder (3). The hydraulic cylinder (3) is driven and controlled by a hydraulic system (19).

5. A four-column hydraulic straightening machine according to claim 1, Features: Two groups of rollers (13) are arranged at the bottom of the sliding frame (5), and the rollers (13) roll on the top side edge of the straightening platform (2).

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